commit 8af3fbc9e053cba4384d7cea853e57e1ec39e6c5
Author: fedorvin <vino-f@pm.me>
Date: Fri, 25 Apr 2025 12:33:43 +0200
init
Diffstat:
76 files changed, 33385 insertions(+), 0 deletions(-)
diff --git a/dwm/LICENSE b/dwm/LICENSE
@@ -0,0 +1,38 @@
+MIT/X Consortium License
+
+© 2006-2019 Anselm R Garbe <anselm@garbe.ca>
+© 2006-2009 Jukka Salmi <jukka at salmi dot ch>
+© 2006-2007 Sander van Dijk <a dot h dot vandijk at gmail dot com>
+© 2007-2011 Peter Hartlich <sgkkr at hartlich dot com>
+© 2007-2009 Szabolcs Nagy <nszabolcs at gmail dot com>
+© 2007-2009 Christof Musik <christof at sendfax dot de>
+© 2007-2009 Premysl Hruby <dfenze at gmail dot com>
+© 2007-2008 Enno Gottox Boland <gottox at s01 dot de>
+© 2008 Martin Hurton <martin dot hurton at gmail dot com>
+© 2008 Neale Pickett <neale dot woozle dot org>
+© 2009 Mate Nagy <mnagy at port70 dot net>
+© 2010-2016 Hiltjo Posthuma <hiltjo@codemadness.org>
+© 2010-2012 Connor Lane Smith <cls@lubutu.com>
+© 2011 Christoph Lohmann <20h@r-36.net>
+© 2015-2016 Quentin Rameau <quinq@fifth.space>
+© 2015-2016 Eric Pruitt <eric.pruitt@gmail.com>
+© 2016-2017 Markus Teich <markus.teich@stusta.mhn.de>
+© 2020-2022 Chris Down <chris@chrisdown.name>
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the "Software"),
+to deal in the Software without restriction, including without limitation
+the rights to use, copy, modify, merge, publish, distribute, sublicense,
+and/or sell copies of the Software, and to permit persons to whom the
+Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+DEALINGS IN THE SOFTWARE.
diff --git a/dwm/Makefile b/dwm/Makefile
@@ -0,0 +1,51 @@
+# dwm - dynamic window manager
+# See LICENSE file for copyright and license details.
+
+include config.mk
+
+SRC = drw.c dwm.c util.c
+OBJ = ${SRC:.c=.o}
+
+all: options dwm
+
+options:
+ @echo dwm build options:
+ @echo "CFLAGS = ${CFLAGS}"
+ @echo "LDFLAGS = ${LDFLAGS}"
+ @echo "CC = ${CC}"
+
+.c.o:
+ ${CC} -c ${CFLAGS} $<
+
+${OBJ}: config.h config.mk
+
+config.h:
+ cp config.def.h $@
+
+dwm: ${OBJ}
+ ${CC} -o $@ ${OBJ} ${LDFLAGS}
+
+clean:
+ rm -f dwm ${OBJ} dwm-${VERSION}.tar.gz
+
+dist: clean
+ mkdir -p dwm-${VERSION}
+ cp -R LICENSE Makefile README config.def.h config.mk\
+ dwm.1 drw.h util.h ${SRC} dwm.png transient.c dwm-${VERSION}
+ tar -cf dwm-${VERSION}.tar dwm-${VERSION}
+ gzip dwm-${VERSION}.tar
+ rm -rf dwm-${VERSION}
+
+install: all
+ mkdir -p ${DESTDIR}${PREFIX}/bin
+ cp -f dwm ${DESTDIR}${PREFIX}/bin
+ chmod 755 ${DESTDIR}${PREFIX}/bin/dwm
+ mkdir -p ${DESTDIR}${MANPREFIX}/man1
+ sed "s/VERSION/${VERSION}/g" < dwm.1 > ${DESTDIR}${MANPREFIX}/man1/dwm.1
+ chmod 644 ${DESTDIR}${MANPREFIX}/man1/dwm.1
+
+uninstall:
+ rm -f ${DESTDIR}${PREFIX}/bin/dwm\
+ ${DESTDIR}${MANPREFIX}/man1/dwm.1
+
+.PHONY: all options clean dist install uninstall
diff --git a/dwm/README.md b/dwm/README.md
@@ -0,0 +1,56 @@
+# notes about the scripts
+
+- all the script **are made to work with my directory strucutre** please edit before use
+- all script are in the "scripts" folder.
+
+
+# deafult dwm readme
+
+dwm - dynamic window manager
+============================
+dwm is an extremely fast, small, and dynamic window manager for X.
+
+
+Requirements
+------------
+In order to build dwm you need the Xlib header files.
+
+
+Installation
+------------
+Edit config.mk to match your local setup (dwm is installed into
+the /usr/local namespace by default).
+
+Afterwards enter the following command to build and install dwm (if
+necessary as root):
+
+ make clean install
+
+
+Running dwm
+-----------
+Add the following line to your .xinitrc to start dwm using startx:
+
+ exec dwm
+
+In order to connect dwm to a specific display, make sure that
+the DISPLAY environment variable is set correctly, e.g.:
+
+ DISPLAY=foo.bar:1 exec dwm
+
+(This will start dwm on display :1 of the host foo.bar.)
+
+In order to display status info in the bar, you can do something
+like this in your .xinitrc:
+
+ while xsetroot -name "`date` `uptime | sed 's/.*,//'`"
+ do
+ sleep 1
+ done &
+ exec dwm
+
+
+Configuration
+-------------
+The configuration of dwm is done by creating a custom config.h
+and (re)compiling the source code.
diff --git a/dwm/config.def.h b/dwm/config.def.h
@@ -0,0 +1,152 @@
+/* See LICENSE file for copyright and license details. */
+
+/* appearance */
+static const unsigned int borderpx = 1; /* border pixel of windows */
+static const unsigned int gappx = 4; /* gaps between windows */
+static const unsigned int snap = 32; /* snap pixel */
+static const int swallowfloating = 0; /* 1 means swallow floating windows by default */
+static const unsigned int systraypinning = 0; /* 0: sloppy systray follows selected monitor, >0: pin systray to monitor X */
+static const unsigned int systrayonleft = 0; /* 0: systray in the right corner, >0: systray on left of status text */
+static const unsigned int systrayspacing = 2; /* systray spacing */
+static const int systraypinningfailfirst = 1; /* 1: if pinning fails, display systray on the first monitor, False: display systray on the last monitor*/
+static const int showsystray = 1; /* 0 means no systray */
+static const int showbar = 1; /* 0 means no bar */
+static const int topbar = 1; /* 0 means bottom bar */
+static const char *fonts[] = { "Atkinson Hyperlegible:size=10" };
+static const char dmenufont[] = "Atkinson Hyperlegible:size=10";
+static const char col_gray1[] = "#000000"; /*#222222*/
+static const char col_gray2[] = "#ffffff"; /*#444444*/
+static const char col_gray3[] = "#bbbbbb"; /*#bbbbbb*/
+static const char col_gray4[] = "#eeeeee"; /*#eeeeee*/
+static const char col_cyan[] = "#98a4ff"; /*#005577*/
+static const char col_cyan2[] = "#0087ff";
+static const char col_red[] = "#cc0000";
+static const char *colors[][3] = {
+ /* fg bg border */
+ [SchemeNorm] = { col_gray3, col_gray1, col_gray1 },
+ [SchemeSel] = { col_gray4, col_gray1, col_red},
+ [SchemeStatus] = { col_gray3, col_gray1, "#000000" },
+ [SchemeTagsSel] = { col_gray4, col_red, "#000000" },
+ [SchemeTagsNorm] = { col_gray3, col_gray1, "#000000" },
+ [SchemeInfoSel] = { col_gray4, col_gray1, "#000000" },
+ [SchemeInfoNorm] = { col_gray3, col_gray1, "#000000" },
+
+};
+
+/* tagging */
+static const char *tags[] = { "1", "2", "3", "4", "5", "6", "7", "8", "9" };
+
+static const Rule rules[] = {
+ /* xprop(1):
+ * WM_CLASS(STRING) = instance, class
+ * WM_NAME(STRING) = title
+ */
+ /* class instance title tags mask isfloating isterminal noswallow monitor */
+ { "Gimp", NULL, NULL, 0, 1, 0, 0, -1 },
+ { "Firefox", NULL, NULL, 1 << 8, 0, 0, -1, -1 },
+ { "st", NULL, NULL, 0, 0, 1, 0, -1 },
+ { "Alacritty", NULL, NULL, 0, 0, 1, 0, -1 },
+ { NULL, NULL, "Event Tester", 0, 0, 0, 1, -1 }, /* xev */
+};
+
+/* layout(s) */
+static const float mfact = 0.55; /* factor of master area size [0.05..0.95] */
+static const int nmaster = 1; /* number of clients in master area */
+static const int resizehints = 1; /* 1 means respect size hints in tiled resizals */
+static const int lockfullscreen = 1; /* 1 will force focus on the fullscreen window */
+
+static const Layout layouts[] = {
+ /* symbol arrange function */
+ { "[]=", tile }, /* first entry is default */
+ { "><>", NULL }, /* no layout function means floating behavior */
+ { "[M]", monocle },
+};
+
+/* key definitions */
+#define MODKEY Mod4Mask
+#define TAGKEYS(KEY,TAG) \
+ { MODKEY, KEY, view, {.ui = 1 << TAG} }, \
+ { MODKEY|ControlMask, KEY, toggleview, {.ui = 1 << TAG} }, \
+ { MODKEY|ShiftMask, KEY, tag, {.ui = 1 << TAG} }, \
+ { MODKEY|ControlMask|ShiftMask, KEY, toggletag, {.ui = 1 << TAG} },
+
+/* helper for spawning shell commands in the pre dwm-5.0 fashion */
+#define SHCMD(cmd) { .v = (const char*[]){ "/bin/sh", "-c", cmd, NULL } }
+
+/* commands */
+static char dmenumon[2] = "0"; /* component of dmenucmd, manipulated in spawn() */
+static const char *dmenucmd[] = { "dmenu_run", "-m", dmenumon, "-fn", dmenufont, "-nb", col_gray1, "-nf", col_gray3, "-sb", col_red, "-sf", col_gray4, NULL };
+static const char *termcmd[] = { "st", NULL };
+static const char *tbdsurf[] = { "tabbed", "surf", "-e", NULL };
+/*Volume controll keys*/
+#include <X11/XF86keysym.h>
+
+/*Opening apps*/
+static const char *screenshot[] = { "flameshot", "gui", NULL };
+
+
+static const Key keys[] = {
+ /* modifier key function argument */
+ { MODKEY|ShiftMask, XK_d, spawn, {.v = dmenucmd } },
+ { MODKEY|ShiftMask, XK_Return, spawn, {.v = termcmd } },
+ { MODKEY|ShiftMask, XK_b, spawn, {.v = tbdsurf} },
+ { MODKEY, XK_b, togglebar, {0} },
+ { MODKEY, XK_j, focusstack, {.i = +1 } },
+ { MODKEY, XK_k, focusstack, {.i = -1 } },
+ { MODKEY, XK_i, incnmaster, {.i = +1 } },
+ { MODKEY, XK_d, incnmaster, {.i = -1 } },
+ { MODKEY, XK_h, setmfact, {.f = -0.05} },
+ { MODKEY, XK_l, setmfact, {.f = +0.05} },
+ { MODKEY, XK_Return, zoom, {0} },
+ { MODKEY, XK_Tab, view, {0} },
+ { MODKEY|ShiftMask, XK_c, killclient, {0} },
+ { MODKEY, XK_t, setlayout, {.v = &layouts[0]} },
+ { MODKEY, XK_f, setlayout, {.v = &layouts[1]} },
+ { MODKEY, XK_m, setlayout, {.v = &layouts[2]} },
+ /*{ MODKEY, XK_space, setlayout, {0} },*/
+ { MODKEY|ShiftMask, XK_space, togglefloating, {0} },
+ { MODKEY, XK_0, view, {.ui = ~0 } },
+ { MODKEY|ShiftMask, XK_0, tag, {.ui = ~0 } },
+ { MODKEY, XK_comma, focusmon, {.i = -1 } },
+ { MODKEY, XK_period, focusmon, {.i = +1 } },
+ { MODKEY|ShiftMask, XK_comma, tagmon, {.i = -1 } },
+ { MODKEY|ShiftMask, XK_period, tagmon, {.i = +1 } },
+ /*{ MODKEY, XK_minus, setgaps, {.i = -1 } },
+ { MODKEY, XK_equal, setgaps, {.i = +1 } },
+ { MODKEY|ShiftMask, XK_equal, setgaps, {.i = 0 } },*/
+ { 0, XF86XK_AudioRaiseVolume, spawn, SHCMD("pamixer -i 5") },
+ { 0, XF86XK_AudioLowerVolume, spawn, SHCMD("pamixer -d 5") },
+ { 0, XF86XK_AudioMute, spawn, SHCMD("pamixer --toggle-mute") },
+ { 0, XF86XK_MonBrightnessUp, spawn, SHCMD("light -A 5 ") },
+ { 0, XF86XK_MonBrightnessDown, spawn, SHCMD("light -U 5 ") },
+ { MODKEY|ShiftMask, XK_s, spawn, {.v = screenshot} },
+ { MODKEY|ShiftMask, XK_l, spawn, SHCMD("slock & systemctl suspend") },
+ { MODKEY|ShiftMask, XK_f, spawn, SHCMD("st sfeed_update ; st sfeed_curses /home/tdr/.sfeed/feeds/*") },
+ TAGKEYS( XK_1, 0)
+ TAGKEYS( XK_2, 1)
+ TAGKEYS( XK_3, 2)
+ TAGKEYS( XK_4, 3)
+ TAGKEYS( XK_5, 4)
+ TAGKEYS( XK_6, 5)
+ TAGKEYS( XK_7, 6)
+ TAGKEYS( XK_8, 7)
+ TAGKEYS( XK_9, 8)
+ { MODKEY|ShiftMask, XK_q, quit, {0} },
+};
+
+/* button definitions */
+/* click can be ClkTagBar, ClkLtSymbol, ClkStatusText, ClkWinTitle, ClkClientWin, or ClkRootWin */
+static const Button buttons[] = {
+ /* click event mask button function argument */
+ { ClkTagBar, MODKEY, Button1, tag, {0} },
+ { ClkTagBar, MODKEY, Button3, toggletag, {0} },
+ { ClkWinTitle, 0, Button2, zoom, {0} },
+ { ClkStatusText, 0, Button2, spawn, {.v = termcmd } },
+ { ClkClientWin, MODKEY, Button1, movemouse, {0} },
+ { ClkClientWin, MODKEY, Button2, togglefloating, {0} },
+ { ClkClientWin, MODKEY, Button3, resizemouse, {0} },
+ { ClkTagBar, 0, Button1, view, {0} },
+ { ClkTagBar, 0, Button3, toggleview, {0} },
+ { ClkTagBar, MODKEY, Button1, tag, {0} },
+ { ClkTagBar, MODKEY, Button3, toggletag, {0} },
+};
diff --git a/dwm/config.mk b/dwm/config.mk
@@ -0,0 +1,40 @@
+# dwm version
+VERSION = 6.4
+
+# Customize below to fit your system
+
+# paths
+PREFIX = /usr/local
+MANPREFIX = ${PREFIX}/share/man
+
+X11INC = /usr/X11R6/include
+X11LIB = /usr/X11R6/lib
+
+# Xinerama, comment if you don't want it
+XINERAMALIBS = -lXinerama
+XINERAMAFLAGS = -DXINERAMA
+
+# freetype
+FREETYPELIBS = -lfontconfig -lXft
+FREETYPEINC = /usr/include/freetype2
+# OpenBSD (uncomment)
+#FREETYPEINC = ${X11INC}/freetype2
+#MANPREFIX = ${PREFIX}/man
+#KVMLIB = -lkvm
+
+# includes and libs
+INCS = -I${X11INC} -I${FREETYPEINC}
+LIBS = -L${X11LIB} -lX11 ${XINERAMALIBS} ${FREETYPELIBS} -lX11-xcb -lxcb -lxcb-res ${KVMLIB}
+
+# flags
+CPPFLAGS = -D_DEFAULT_SOURCE -D_BSD_SOURCE -D_XOPEN_SOURCE=700L -DVERSION=\"${VERSION}\" ${XINERAMAFLAGS}
+#CFLAGS = -g -std=c99 -pedantic -Wall -O0 ${INCS} ${CPPFLAGS}
+CFLAGS = -std=c99 -pedantic -Wall -Wno-deprecated-declarations -Os ${INCS} ${CPPFLAGS}
+LDFLAGS = ${LIBS}
+
+# Solaris
+#CFLAGS = -fast ${INCS} -DVERSION=\"${VERSION}\"
+#LDFLAGS = ${LIBS}
+
+# compiler and linker
+CC = cc
diff --git a/dwm/drw.c b/dwm/drw.c
@@ -0,0 +1,450 @@
+/* See LICENSE file for copyright and license details. */
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <X11/Xlib.h>
+#include <X11/Xft/Xft.h>
+
+#include "drw.h"
+#include "util.h"
+
+#define UTF_INVALID 0xFFFD
+#define UTF_SIZ 4
+
+static const unsigned char utfbyte[UTF_SIZ + 1] = {0x80, 0, 0xC0, 0xE0, 0xF0};
+static const unsigned char utfmask[UTF_SIZ + 1] = {0xC0, 0x80, 0xE0, 0xF0, 0xF8};
+static const long utfmin[UTF_SIZ + 1] = { 0, 0, 0x80, 0x800, 0x10000};
+static const long utfmax[UTF_SIZ + 1] = {0x10FFFF, 0x7F, 0x7FF, 0xFFFF, 0x10FFFF};
+
+static long
+utf8decodebyte(const char c, size_t *i)
+{
+ for (*i = 0; *i < (UTF_SIZ + 1); ++(*i))
+ if (((unsigned char)c & utfmask[*i]) == utfbyte[*i])
+ return (unsigned char)c & ~utfmask[*i];
+ return 0;
+}
+
+static size_t
+utf8validate(long *u, size_t i)
+{
+ if (!BETWEEN(*u, utfmin[i], utfmax[i]) || BETWEEN(*u, 0xD800, 0xDFFF))
+ *u = UTF_INVALID;
+ for (i = 1; *u > utfmax[i]; ++i)
+ ;
+ return i;
+}
+
+static size_t
+utf8decode(const char *c, long *u, size_t clen)
+{
+ size_t i, j, len, type;
+ long udecoded;
+
+ *u = UTF_INVALID;
+ if (!clen)
+ return 0;
+ udecoded = utf8decodebyte(c[0], &len);
+ if (!BETWEEN(len, 1, UTF_SIZ))
+ return 1;
+ for (i = 1, j = 1; i < clen && j < len; ++i, ++j) {
+ udecoded = (udecoded << 6) | utf8decodebyte(c[i], &type);
+ if (type)
+ return j;
+ }
+ if (j < len)
+ return 0;
+ *u = udecoded;
+ utf8validate(u, len);
+
+ return len;
+}
+
+Drw *
+drw_create(Display *dpy, int screen, Window root, unsigned int w, unsigned int h)
+{
+ Drw *drw = ecalloc(1, sizeof(Drw));
+
+ drw->dpy = dpy;
+ drw->screen = screen;
+ drw->root = root;
+ drw->w = w;
+ drw->h = h;
+ drw->drawable = XCreatePixmap(dpy, root, w, h, DefaultDepth(dpy, screen));
+ drw->gc = XCreateGC(dpy, root, 0, NULL);
+ XSetLineAttributes(dpy, drw->gc, 1, LineSolid, CapButt, JoinMiter);
+
+ return drw;
+}
+
+void
+drw_resize(Drw *drw, unsigned int w, unsigned int h)
+{
+ if (!drw)
+ return;
+
+ drw->w = w;
+ drw->h = h;
+ if (drw->drawable)
+ XFreePixmap(drw->dpy, drw->drawable);
+ drw->drawable = XCreatePixmap(drw->dpy, drw->root, w, h, DefaultDepth(drw->dpy, drw->screen));
+}
+
+void
+drw_free(Drw *drw)
+{
+ XFreePixmap(drw->dpy, drw->drawable);
+ XFreeGC(drw->dpy, drw->gc);
+ drw_fontset_free(drw->fonts);
+ free(drw);
+}
+
+/* This function is an implementation detail. Library users should use
+ * drw_fontset_create instead.
+ */
+static Fnt *
+xfont_create(Drw *drw, const char *fontname, FcPattern *fontpattern)
+{
+ Fnt *font;
+ XftFont *xfont = NULL;
+ FcPattern *pattern = NULL;
+
+ if (fontname) {
+ /* Using the pattern found at font->xfont->pattern does not yield the
+ * same substitution results as using the pattern returned by
+ * FcNameParse; using the latter results in the desired fallback
+ * behaviour whereas the former just results in missing-character
+ * rectangles being drawn, at least with some fonts. */
+ if (!(xfont = XftFontOpenName(drw->dpy, drw->screen, fontname))) {
+ fprintf(stderr, "error, cannot load font from name: '%s'\n", fontname);
+ return NULL;
+ }
+ if (!(pattern = FcNameParse((FcChar8 *) fontname))) {
+ fprintf(stderr, "error, cannot parse font name to pattern: '%s'\n", fontname);
+ XftFontClose(drw->dpy, xfont);
+ return NULL;
+ }
+ } else if (fontpattern) {
+ if (!(xfont = XftFontOpenPattern(drw->dpy, fontpattern))) {
+ fprintf(stderr, "error, cannot load font from pattern.\n");
+ return NULL;
+ }
+ } else {
+ die("no font specified.");
+ }
+
+ font = ecalloc(1, sizeof(Fnt));
+ font->xfont = xfont;
+ font->pattern = pattern;
+ font->h = xfont->ascent + xfont->descent;
+ font->dpy = drw->dpy;
+
+ return font;
+}
+
+static void
+xfont_free(Fnt *font)
+{
+ if (!font)
+ return;
+ if (font->pattern)
+ FcPatternDestroy(font->pattern);
+ XftFontClose(font->dpy, font->xfont);
+ free(font);
+}
+
+Fnt*
+drw_fontset_create(Drw* drw, const char *fonts[], size_t fontcount)
+{
+ Fnt *cur, *ret = NULL;
+ size_t i;
+
+ if (!drw || !fonts)
+ return NULL;
+
+ for (i = 1; i <= fontcount; i++) {
+ if ((cur = xfont_create(drw, fonts[fontcount - i], NULL))) {
+ cur->next = ret;
+ ret = cur;
+ }
+ }
+ return (drw->fonts = ret);
+}
+
+void
+drw_fontset_free(Fnt *font)
+{
+ if (font) {
+ drw_fontset_free(font->next);
+ xfont_free(font);
+ }
+}
+
+void
+drw_clr_create(Drw *drw, Clr *dest, const char *clrname)
+{
+ if (!drw || !dest || !clrname)
+ return;
+
+ if (!XftColorAllocName(drw->dpy, DefaultVisual(drw->dpy, drw->screen),
+ DefaultColormap(drw->dpy, drw->screen),
+ clrname, dest))
+ die("error, cannot allocate color '%s'", clrname);
+}
+
+/* Wrapper to create color schemes. The caller has to call free(3) on the
+ * returned color scheme when done using it. */
+Clr *
+drw_scm_create(Drw *drw, const char *clrnames[], size_t clrcount)
+{
+ size_t i;
+ Clr *ret;
+
+ /* need at least two colors for a scheme */
+ if (!drw || !clrnames || clrcount < 2 || !(ret = ecalloc(clrcount, sizeof(XftColor))))
+ return NULL;
+
+ for (i = 0; i < clrcount; i++)
+ drw_clr_create(drw, &ret[i], clrnames[i]);
+ return ret;
+}
+
+void
+drw_setfontset(Drw *drw, Fnt *set)
+{
+ if (drw)
+ drw->fonts = set;
+}
+
+void
+drw_setscheme(Drw *drw, Clr *scm)
+{
+ if (drw)
+ drw->scheme = scm;
+}
+
+void
+drw_rect(Drw *drw, int x, int y, unsigned int w, unsigned int h, int filled, int invert)
+{
+ if (!drw || !drw->scheme)
+ return;
+ XSetForeground(drw->dpy, drw->gc, invert ? drw->scheme[ColBg].pixel : drw->scheme[ColFg].pixel);
+ if (filled)
+ XFillRectangle(drw->dpy, drw->drawable, drw->gc, x, y, w, h);
+ else
+ XDrawRectangle(drw->dpy, drw->drawable, drw->gc, x, y, w - 1, h - 1);
+}
+
+int
+drw_text(Drw *drw, int x, int y, unsigned int w, unsigned int h, unsigned int lpad, const char *text, int invert)
+{
+ int i, ty, ellipsis_x = 0;
+ unsigned int tmpw, ew, ellipsis_w = 0, ellipsis_len;
+ XftDraw *d = NULL;
+ Fnt *usedfont, *curfont, *nextfont;
+ int utf8strlen, utf8charlen, render = x || y || w || h;
+ long utf8codepoint = 0;
+ const char *utf8str;
+ FcCharSet *fccharset;
+ FcPattern *fcpattern;
+ FcPattern *match;
+ XftResult result;
+ int charexists = 0, overflow = 0;
+ /* keep track of a couple codepoints for which we have no match. */
+ enum { nomatches_len = 64 };
+ static struct { long codepoint[nomatches_len]; unsigned int idx; } nomatches;
+ static unsigned int ellipsis_width = 0;
+
+ if (!drw || (render && (!drw->scheme || !w)) || !text || !drw->fonts)
+ return 0;
+
+ if (!render) {
+ w = invert ? invert : ~invert;
+ } else {
+ XSetForeground(drw->dpy, drw->gc, drw->scheme[invert ? ColFg : ColBg].pixel);
+ XFillRectangle(drw->dpy, drw->drawable, drw->gc, x, y, w, h);
+ d = XftDrawCreate(drw->dpy, drw->drawable,
+ DefaultVisual(drw->dpy, drw->screen),
+ DefaultColormap(drw->dpy, drw->screen));
+ x += lpad;
+ w -= lpad;
+ }
+
+ usedfont = drw->fonts;
+ if (!ellipsis_width && render)
+ ellipsis_width = drw_fontset_getwidth(drw, "...");
+ while (1) {
+ ew = ellipsis_len = utf8strlen = 0;
+ utf8str = text;
+ nextfont = NULL;
+ while (*text) {
+ utf8charlen = utf8decode(text, &utf8codepoint, UTF_SIZ);
+ for (curfont = drw->fonts; curfont; curfont = curfont->next) {
+ charexists = charexists || XftCharExists(drw->dpy, curfont->xfont, utf8codepoint);
+ if (charexists) {
+ drw_font_getexts(curfont, text, utf8charlen, &tmpw, NULL);
+ if (ew + ellipsis_width <= w) {
+ /* keep track where the ellipsis still fits */
+ ellipsis_x = x + ew;
+ ellipsis_w = w - ew;
+ ellipsis_len = utf8strlen;
+ }
+
+ if (ew + tmpw > w) {
+ overflow = 1;
+ /* called from drw_fontset_getwidth_clamp():
+ * it wants the width AFTER the overflow
+ */
+ if (!render)
+ x += tmpw;
+ else
+ utf8strlen = ellipsis_len;
+ } else if (curfont == usedfont) {
+ utf8strlen += utf8charlen;
+ text += utf8charlen;
+ ew += tmpw;
+ } else {
+ nextfont = curfont;
+ }
+ break;
+ }
+ }
+
+ if (overflow || !charexists || nextfont)
+ break;
+ else
+ charexists = 0;
+ }
+
+ if (utf8strlen) {
+ if (render) {
+ ty = y + (h - usedfont->h) / 2 + usedfont->xfont->ascent;
+ XftDrawStringUtf8(d, &drw->scheme[invert ? ColBg : ColFg],
+ usedfont->xfont, x, ty, (XftChar8 *)utf8str, utf8strlen);
+ }
+ x += ew;
+ w -= ew;
+ }
+ if (render && overflow)
+ drw_text(drw, ellipsis_x, y, ellipsis_w, h, 0, "...", invert);
+
+ if (!*text || overflow) {
+ break;
+ } else if (nextfont) {
+ charexists = 0;
+ usedfont = nextfont;
+ } else {
+ /* Regardless of whether or not a fallback font is found, the
+ * character must be drawn. */
+ charexists = 1;
+
+ for (i = 0; i < nomatches_len; ++i) {
+ /* avoid calling XftFontMatch if we know we won't find a match */
+ if (utf8codepoint == nomatches.codepoint[i])
+ goto no_match;
+ }
+
+ fccharset = FcCharSetCreate();
+ FcCharSetAddChar(fccharset, utf8codepoint);
+
+ if (!drw->fonts->pattern) {
+ /* Refer to the comment in xfont_create for more information. */
+ die("the first font in the cache must be loaded from a font string.");
+ }
+
+ fcpattern = FcPatternDuplicate(drw->fonts->pattern);
+ FcPatternAddCharSet(fcpattern, FC_CHARSET, fccharset);
+ FcPatternAddBool(fcpattern, FC_SCALABLE, FcTrue);
+
+ FcConfigSubstitute(NULL, fcpattern, FcMatchPattern);
+ FcDefaultSubstitute(fcpattern);
+ match = XftFontMatch(drw->dpy, drw->screen, fcpattern, &result);
+
+ FcCharSetDestroy(fccharset);
+ FcPatternDestroy(fcpattern);
+
+ if (match) {
+ usedfont = xfont_create(drw, NULL, match);
+ if (usedfont && XftCharExists(drw->dpy, usedfont->xfont, utf8codepoint)) {
+ for (curfont = drw->fonts; curfont->next; curfont = curfont->next)
+ ; /* NOP */
+ curfont->next = usedfont;
+ } else {
+ xfont_free(usedfont);
+ nomatches.codepoint[++nomatches.idx % nomatches_len] = utf8codepoint;
+no_match:
+ usedfont = drw->fonts;
+ }
+ }
+ }
+ }
+ if (d)
+ XftDrawDestroy(d);
+
+ return x + (render ? w : 0);
+}
+
+void
+drw_map(Drw *drw, Window win, int x, int y, unsigned int w, unsigned int h)
+{
+ if (!drw)
+ return;
+
+ XCopyArea(drw->dpy, drw->drawable, win, drw->gc, x, y, w, h, x, y);
+ XSync(drw->dpy, False);
+}
+
+unsigned int
+drw_fontset_getwidth(Drw *drw, const char *text)
+{
+ if (!drw || !drw->fonts || !text)
+ return 0;
+ return drw_text(drw, 0, 0, 0, 0, 0, text, 0);
+}
+
+unsigned int
+drw_fontset_getwidth_clamp(Drw *drw, const char *text, unsigned int n)
+{
+ unsigned int tmp = 0;
+ if (drw && drw->fonts && text && n)
+ tmp = drw_text(drw, 0, 0, 0, 0, 0, text, n);
+ return MIN(n, tmp);
+}
+
+void
+drw_font_getexts(Fnt *font, const char *text, unsigned int len, unsigned int *w, unsigned int *h)
+{
+ XGlyphInfo ext;
+
+ if (!font || !text)
+ return;
+
+ XftTextExtentsUtf8(font->dpy, font->xfont, (XftChar8 *)text, len, &ext);
+ if (w)
+ *w = ext.xOff;
+ if (h)
+ *h = font->h;
+}
+
+Cur *
+drw_cur_create(Drw *drw, int shape)
+{
+ Cur *cur;
+
+ if (!drw || !(cur = ecalloc(1, sizeof(Cur))))
+ return NULL;
+
+ cur->cursor = XCreateFontCursor(drw->dpy, shape);
+
+ return cur;
+}
+
+void
+drw_cur_free(Drw *drw, Cur *cursor)
+{
+ if (!cursor)
+ return;
+
+ XFreeCursor(drw->dpy, cursor->cursor);
+ free(cursor);
+}
diff --git a/dwm/drw.h b/dwm/drw.h
@@ -0,0 +1,58 @@
+/* See LICENSE file for copyright and license details. */
+
+typedef struct {
+ Cursor cursor;
+} Cur;
+
+typedef struct Fnt {
+ Display *dpy;
+ unsigned int h;
+ XftFont *xfont;
+ FcPattern *pattern;
+ struct Fnt *next;
+} Fnt;
+
+enum { ColFg, ColBg, ColBorder }; /* Clr scheme index */
+typedef XftColor Clr;
+
+typedef struct {
+ unsigned int w, h;
+ Display *dpy;
+ int screen;
+ Window root;
+ Drawable drawable;
+ GC gc;
+ Clr *scheme;
+ Fnt *fonts;
+} Drw;
+
+/* Drawable abstraction */
+Drw *drw_create(Display *dpy, int screen, Window win, unsigned int w, unsigned int h);
+void drw_resize(Drw *drw, unsigned int w, unsigned int h);
+void drw_free(Drw *drw);
+
+/* Fnt abstraction */
+Fnt *drw_fontset_create(Drw* drw, const char *fonts[], size_t fontcount);
+void drw_fontset_free(Fnt* set);
+unsigned int drw_fontset_getwidth(Drw *drw, const char *text);
+unsigned int drw_fontset_getwidth_clamp(Drw *drw, const char *text, unsigned int n);
+void drw_font_getexts(Fnt *font, const char *text, unsigned int len, unsigned int *w, unsigned int *h);
+
+/* Colorscheme abstraction */
+void drw_clr_create(Drw *drw, Clr *dest, const char *clrname);
+Clr *drw_scm_create(Drw *drw, const char *clrnames[], size_t clrcount);
+
+/* Cursor abstraction */
+Cur *drw_cur_create(Drw *drw, int shape);
+void drw_cur_free(Drw *drw, Cur *cursor);
+
+/* Drawing context manipulation */
+void drw_setfontset(Drw *drw, Fnt *set);
+void drw_setscheme(Drw *drw, Clr *scm);
+
+/* Drawing functions */
+void drw_rect(Drw *drw, int x, int y, unsigned int w, unsigned int h, int filled, int invert);
+int drw_text(Drw *drw, int x, int y, unsigned int w, unsigned int h, unsigned int lpad, const char *text, int invert);
+
+/* Map functions */
+void drw_map(Drw *drw, Window win, int x, int y, unsigned int w, unsigned int h);
diff --git a/dwm/dwm-autostart-20161205-bb3bd6f.diff b/dwm/dwm-autostart-20161205-bb3bd6f.diff
@@ -0,0 +1,39 @@
+commit 5918623c5bd7fda155bf9dc3d33890c4ae1722d0
+Author: Simon Bremer <simon.bremer@tum.de>
+Date: Thu Dec 22 17:31:07 2016 +0100
+
+ Applied and fixed autostart patch for previous version;
+
+diff --git a/dwm.c b/dwm.c
+index d27cb67..066ed71 100644
+--- a/dwm.c
++++ b/dwm.c
+@@ -194,6 +194,7 @@ static void resizeclient(Client *c, int x, int y, int w, int h);
+ static void resizemouse(const Arg *arg);
+ static void restack(Monitor *m);
+ static void run(void);
++static void runAutostart(void);
+ static void scan(void);
+ static int sendevent(Client *c, Atom proto);
+ static void sendmon(Client *c, Monitor *m);
+@@ -1386,6 +1387,12 @@ run(void)
+ }
+
+ void
++runAutostart(void) {
++ system("cd ~/.dwm; ./autostart_blocking.sh");
++ system("cd ~/.dwm; ./autostart.sh &");
++}
++
++void
+ scan(void)
+ {
+ unsigned int i, num;
+@@ -2145,6 +2152,7 @@ main(int argc, char *argv[])
+ checkotherwm();
+ setup();
+ scan();
++ runAutostart();
+ run();
+ cleanup();
+ XCloseDisplay(dpy);
diff --git a/dwm/dwm-colorbar-6.3.diff b/dwm/dwm-colorbar-6.3.diff
@@ -0,0 +1,86 @@
+From 647a2a56cf7cab6dea868f9800671770940ce3c3 Mon Sep 17 00:00:00 2001
+From: Alessandro Sisto <alessandro.sisto@studioform.net>
+Date: Sun, 5 Jun 2022 12:03:43 +0200
+Subject: [PATCH] colorbar
+
+---
+ config.def.h | 6 +++++-
+ dwm.c | 12 ++++++------
+ 2 files changed, 11 insertions(+), 7 deletions(-)
+
+diff --git a/config.def.h b/config.def.h
+index a2ac963..56bc324 100644
+--- a/config.def.h
++++ b/config.def.h
+@@ -16,6 +16,11 @@ static const char *colors[][3] = {
+ /* fg bg border */
+ [SchemeNorm] = { col_gray3, col_gray1, col_gray2 },
+ [SchemeSel] = { col_gray4, col_cyan, col_cyan },
++ [SchemeStatus] = { col_gray3, col_gray1, "#000000" }, // Statusbar right {text,background,not used but cannot be empty}
++ [SchemeTagsSel] = { col_gray4, col_cyan, "#000000" }, // Tagbar left selected {text,background,not used but cannot be empty}
++ [SchemeTagsNorm] = { col_gray3, col_gray1, "#000000" }, // Tagbar left unselected {text,background,not used but cannot be empty}
++ [SchemeInfoSel] = { col_gray4, col_cyan, "#000000" }, // infobar middle selected {text,background,not used but cannot be empty}
++ [SchemeInfoNorm] = { col_gray3, col_gray1, "#000000" }, // infobar middle unselected {text,background,not used but cannot be empty}
+ };
+
+ /* tagging */
+@@ -113,4 +118,3 @@ static Button buttons[] = {
+ { ClkTagBar, MODKEY, Button1, tag, {0} },
+ { ClkTagBar, MODKEY, Button3, toggletag, {0} },
+ };
+-
+diff --git a/dwm.c b/dwm.c
+index a96f33c..0eaa4cd 100644
+--- a/dwm.c
++++ b/dwm.c
+@@ -59,7 +59,7 @@
+
+ /* enums */
+ enum { CurNormal, CurResize, CurMove, CurLast }; /* cursor */
+-enum { SchemeNorm, SchemeSel }; /* color schemes */
++enum { SchemeNorm, SchemeSel, SchemeStatus, SchemeTagsSel, SchemeTagsNorm, SchemeInfoSel, SchemeInfoNorm }; /* color schemes */
+ enum { NetSupported, NetWMName, NetWMState, NetWMCheck,
+ NetWMFullscreen, NetActiveWindow, NetWMWindowType,
+ NetWMWindowTypeDialog, NetClientList, NetLast }; /* EWMH atoms */
+@@ -707,7 +707,7 @@ drawbar(Monitor *m)
+
+ /* draw status first so it can be overdrawn by tags later */
+ if (m == selmon) { /* status is only drawn on selected monitor */
+- drw_setscheme(drw, scheme[SchemeNorm]);
++ drw_setscheme(drw, scheme[SchemeStatus]);
+ tw = TEXTW(stext) - lrpad + 2; /* 2px right padding */
+ drw_text(drw, m->ww - tw, 0, tw, bh, 0, stext, 0);
+ }
+@@ -720,7 +720,7 @@ drawbar(Monitor *m)
+ x = 0;
+ for (i = 0; i < LENGTH(tags); i++) {
+ w = TEXTW(tags[i]);
+- drw_setscheme(drw, scheme[m->tagset[m->seltags] & 1 << i ? SchemeSel : SchemeNorm]);
++ drw_setscheme(drw, scheme[m->tagset[m->seltags] & 1 << i ? SchemeTagsSel : SchemeTagsNorm]);
+ drw_text(drw, x, 0, w, bh, lrpad / 2, tags[i], urg & 1 << i);
+ if (occ & 1 << i)
+ drw_rect(drw, x + boxs, boxs, boxw, boxw,
+@@ -729,17 +729,17 @@ drawbar(Monitor *m)
+ x += w;
+ }
+ w = blw = TEXTW(m->ltsymbol);
+- drw_setscheme(drw, scheme[SchemeNorm]);
++ drw_setscheme(drw, scheme[SchemeTagsNorm]);
+ x = drw_text(drw, x, 0, w, bh, lrpad / 2, m->ltsymbol, 0);
+
+ if ((w = m->ww - tw - x) > bh) {
+ if (m->sel) {
+- drw_setscheme(drw, scheme[m == selmon ? SchemeSel : SchemeNorm]);
++ drw_setscheme(drw, scheme[m == selmon ? SchemeInfoSel : SchemeInfoNorm]);
+ drw_text(drw, x, 0, w, bh, lrpad / 2, m->sel->name, 0);
+ if (m->sel->isfloating)
+ drw_rect(drw, x + boxs, boxs, boxw, boxw, m->sel->isfixed, 0);
+ } else {
+- drw_setscheme(drw, scheme[SchemeNorm]);
++ drw_setscheme(drw, scheme[SchemeInfoNorm]);
+ drw_rect(drw, x, 0, w, bh, 1, 1);
+ }
+ }
+--
+2.36.1
+
diff --git a/dwm/dwm-cursorwarp-mononly-20210222-61bb8b2.diff b/dwm/dwm-cursorwarp-mononly-20210222-61bb8b2.diff
@@ -0,0 +1,25 @@
+From 1e4936416fa5517fe447e3388e1d44c913e29f56 Mon Sep 17 00:00:00 2001
+From: Markus Dam <markus.dam123@gmail.com>
+Date: Mon, 22 Feb 2021 13:40:13 +0100
+Subject: [PATCH] Add cursor warping
+
+---
+ dwm.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+diff --git a/dwm.c b/dwm.c
+index 331a309..c80ef8a 100644
+--- a/dwm.c
++++ b/dwm.c
+@@ -882,6 +882,8 @@ focusmon(const Arg *arg)
+ unfocus(selmon->sel, 0);
+ selmon = m;
+ focus(NULL);
++ if (selmon->sel)
++ XWarpPointer(dpy, None, selmon->sel->win, 0, 0, 0, 0, selmon->sel->w/2, selmon->sel->h/2);
+ }
+
+ void
+--
+2.30.1
+
diff --git a/dwm/dwm-fullgaps-6.4.diff b/dwm/dwm-fullgaps-6.4.diff
@@ -0,0 +1,94 @@
+diff -up a/config.def.h b/config.def.h
+--- a/config.def.h
++++ b/config.def.h
+@@ -2,6 +2,7 @@
+
+ /* appearance */
+ static const unsigned int borderpx = 1; /* border pixel of windows */
++static const unsigned int gappx = 5; /* gaps between windows */
+ static const unsigned int snap = 32; /* snap pixel */
+ static const int showbar = 1; /* 0 means no bar */
+ static const int topbar = 1; /* 0 means bottom bar */
+@@ -85,6 +86,9 @@ static const Key keys[] = {
+ { MODKEY, XK_period, focusmon, {.i = +1 } },
+ { MODKEY|ShiftMask, XK_comma, tagmon, {.i = -1 } },
+ { MODKEY|ShiftMask, XK_period, tagmon, {.i = +1 } },
++ { MODKEY, XK_minus, setgaps, {.i = -1 } },
++ { MODKEY, XK_equal, setgaps, {.i = +1 } },
++ { MODKEY|ShiftMask, XK_equal, setgaps, {.i = 0 } },
+ TAGKEYS( XK_1, 0)
+ TAGKEYS( XK_2, 1)
+ TAGKEYS( XK_3, 2)
+diff -up a/dwm.c b/dwm.c
+--- a/dwm.c 2023-04-30
++++ b/dwm.c 2023-04-30
+@@ -119,6 +119,7 @@ struct Monitor {
+ int by; /* bar geometry */
+ int mx, my, mw, mh; /* screen size */
+ int wx, wy, ww, wh; /* window area */
++ int gappx; /* gaps between windows */
+ unsigned int seltags;
+ unsigned int sellt;
+ unsigned int tagset[2];
+@@ -200,6 +201,7 @@ static void sendmon(Client *c, Monitor *
+ static void setclientstate(Client *c, long state);
+ static void setfocus(Client *c);
+ static void setfullscreen(Client *c, int fullscreen);
++static void setgaps(const Arg *arg);
+ static void setlayout(const Arg *arg);
+ static void setmfact(const Arg *arg);
+ static void setup(void);
+@@ -641,6 +643,7 @@ createmon(void)
+ m->nmaster = nmaster;
+ m->showbar = showbar;
+ m->topbar = topbar;
++ m->gappx = gappx;
+ m->lt[0] = &layouts[0];
+ m->lt[1] = &layouts[1 % LENGTH(layouts)];
+ strncpy(m->ltsymbol, layouts[0].symbol, sizeof m->ltsymbol);
+@@ -1508,6 +1511,16 @@ setfullscreen(Client *c, int fullscreen)
+ }
+
+ void
++setgaps(const Arg *arg)
++{
++ if ((arg->i == 0) || (selmon->gappx + arg->i < 0))
++ selmon->gappx = 0;
++ else
++ selmon->gappx += arg->i;
++ arrange(selmon);
++}
++
++void
+ setlayout(const Arg *arg)
+ {
+ if (!arg || !arg->v || arg->v != selmon->lt[selmon->sellt])
+@@ -1697,18 +1710,18 @@ tile(Monitor *m)
+ if (n > m->nmaster)
+ mw = m->nmaster ? m->ww * m->mfact : 0;
+ else
+- mw = m->ww;
+- for (i = my = ty = 0, c = nexttiled(m->clients); c; c = nexttiled(c->next), i++)
+- if (i < m->nmaster) {
+- h = (m->wh - my) / (MIN(n, m->nmaster) - i);
+- resize(c, m->wx, m->wy + my, mw - (2*c->bw), h - (2*c->bw), 0);
+- if (my + HEIGHT(c) < m->wh)
+- my += HEIGHT(c);
++ mw = m->ww - m->gappx;
++ for (i = 0, my = ty = m->gappx, c = nexttiled(m->clients); c; c = nexttiled(c->next), i++)
++ if (i < m->nmaster) {
++ h = (m->wh - my) / (MIN(n, m->nmaster) - i) - m->gappx;
++ resize(c, m->wx + m->gappx, m->wy + my, mw - (2*c->bw) - m->gappx, h - (2*c->bw), 0);
++ if (my + HEIGHT(c) + m->gappx < m->wh)
++ my += HEIGHT(c) + m->gappx;
+ } else {
+- h = (m->wh - ty) / (n - i);
+- resize(c, m->wx + mw, m->wy + ty, m->ww - mw - (2*c->bw), h - (2*c->bw), 0);
+- if (ty + HEIGHT(c) < m->wh)
+- ty += HEIGHT(c);
++ h = (m->wh - ty) / (n - i) - m->gappx;
++ resize(c, m->wx + mw + m->gappx, m->wy + ty, m->ww - mw - (2*c->bw) - 2*m->gappx, h - (2*c->bw), 0);
++ if (ty + HEIGHT(c) + m->gappx < m->wh)
++ ty += HEIGHT(c) + m->gappx;
+ }
+ }
diff --git a/dwm/dwm-swallow-6.3.diff b/dwm/dwm-swallow-6.3.diff
@@ -0,0 +1,412 @@
+From 0cf9a007511f7dfd7dd94171b172562ebac9b6d5 Mon Sep 17 00:00:00 2001
+From: Tom Schwindl <schwindl@posteo.de>
+Date: Sat, 10 Sep 2022 12:51:09 +0200
+Subject: [PATCH] 6.3 swallow patch
+
+---
+ config.def.h | 9 +-
+ config.mk | 3 +-
+ dwm.c | 235 +++++++++++++++++++++++++++++++++++++++++++++++++--
+ 3 files changed, 237 insertions(+), 10 deletions(-)
+
+diff --git a/config.def.h b/config.def.h
+index 061ad662f82a..0b2b8ffd30d5 100644
+--- a/config.def.h
++++ b/config.def.h
+@@ -3,6 +3,7 @@
+ /* appearance */
+ static const unsigned int borderpx = 1; /* border pixel of windows */
+ static const unsigned int snap = 32; /* snap pixel */
++static const int swallowfloating = 0; /* 1 means swallow floating windows by default */
+ static const int showbar = 1; /* 0 means no bar */
+ static const int topbar = 1; /* 0 means bottom bar */
+ static const char *fonts[] = { "monospace:size=10" };
+@@ -26,9 +27,11 @@ static const Rule rules[] = {
+ * WM_CLASS(STRING) = instance, class
+ * WM_NAME(STRING) = title
+ */
+- /* class instance title tags mask isfloating monitor */
+- { "Gimp", NULL, NULL, 0, 1, -1 },
+- { "Firefox", NULL, NULL, 1 << 8, 0, -1 },
++ /* class instance title tags mask isfloating isterminal noswallow monitor */
++ { "Gimp", NULL, NULL, 0, 1, 0, 0, -1 },
++ { "Firefox", NULL, NULL, 1 << 8, 0, 0, -1, -1 },
++ { "St", NULL, NULL, 0, 0, 1, 0, -1 },
++ { NULL, NULL, "Event Tester", 0, 0, 0, 1, -1 }, /* xev */
+ };
+
+ /* layout(s) */
+diff --git a/config.mk b/config.mk
+index 81c493ef4aff..52d1ebf30bec 100644
+--- a/config.mk
++++ b/config.mk
+@@ -20,10 +20,11 @@ FREETYPEINC = /usr/include/freetype2
+ # OpenBSD (uncomment)
+ #FREETYPEINC = ${X11INC}/freetype2
+ #MANPREFIX = ${PREFIX}/man
++#KVMLIB = -lkvm
+
+ # includes and libs
+ INCS = -I${X11INC} -I${FREETYPEINC}
+-LIBS = -L${X11LIB} -lX11 ${XINERAMALIBS} ${FREETYPELIBS}
++LIBS = -L${X11LIB} -lX11 ${XINERAMALIBS} ${FREETYPELIBS} -lX11-xcb -lxcb -lxcb-res ${KVMLIB}
+
+ # flags
+ CPPFLAGS = -D_DEFAULT_SOURCE -D_BSD_SOURCE -D_POSIX_C_SOURCE=200809L -DVERSION=\"${VERSION}\" ${XINERAMAFLAGS}
+diff --git a/dwm.c b/dwm.c
+index e5efb6a22806..e68294b6b679 100644
+--- a/dwm.c
++++ b/dwm.c
+@@ -40,6 +40,12 @@
+ #include <X11/extensions/Xinerama.h>
+ #endif /* XINERAMA */
+ #include <X11/Xft/Xft.h>
++#include <X11/Xlib-xcb.h>
++#include <xcb/res.h>
++#ifdef __OpenBSD__
++#include <sys/sysctl.h>
++#include <kvm.h>
++#endif /* __OpenBSD */
+
+ #include "drw.h"
+ #include "util.h"
+@@ -92,9 +98,11 @@ struct Client {
+ int basew, baseh, incw, inch, maxw, maxh, minw, minh, hintsvalid;
+ int bw, oldbw;
+ unsigned int tags;
+- int isfixed, isfloating, isurgent, neverfocus, oldstate, isfullscreen;
++ int isfixed, isfloating, isurgent, neverfocus, oldstate, isfullscreen, isterminal, noswallow;
++ pid_t pid;
+ Client *next;
+ Client *snext;
++ Client *swallowing;
+ Monitor *mon;
+ Window win;
+ };
+@@ -138,6 +146,8 @@ typedef struct {
+ const char *title;
+ unsigned int tags;
+ int isfloating;
++ int isterminal;
++ int noswallow;
+ int monitor;
+ } Rule;
+
+@@ -235,6 +245,12 @@ static int xerrordummy(Display *dpy, XErrorEvent *ee);
+ static int xerrorstart(Display *dpy, XErrorEvent *ee);
+ static void zoom(const Arg *arg);
+
++static pid_t getparentprocess(pid_t p);
++static int isdescprocess(pid_t p, pid_t c);
++static Client *swallowingclient(Window w);
++static Client *termforwin(const Client *c);
++static pid_t winpid(Window w);
++
+ /* variables */
+ static const char broken[] = "broken";
+ static char stext[256];
+@@ -269,6 +285,8 @@ static Drw *drw;
+ static Monitor *mons, *selmon;
+ static Window root, wmcheckwin;
+
++static xcb_connection_t *xcon;
++
+ /* configuration, allows nested code to access above variables */
+ #include "config.h"
+
+@@ -298,6 +316,8 @@ applyrules(Client *c)
+ && (!r->class || strstr(class, r->class))
+ && (!r->instance || strstr(instance, r->instance)))
+ {
++ c->isterminal = r->isterminal;
++ c->noswallow = r->noswallow;
+ c->isfloating = r->isfloating;
+ c->tags |= r->tags;
+ for (m = mons; m && m->num != r->monitor; m = m->next);
+@@ -416,6 +436,53 @@ attachstack(Client *c)
+ c->mon->stack = c;
+ }
+
++void
++swallow(Client *p, Client *c)
++{
++
++ if (c->noswallow || c->isterminal)
++ return;
++ if (c->noswallow && !swallowfloating && c->isfloating)
++ return;
++
++ detach(c);
++ detachstack(c);
++
++ setclientstate(c, WithdrawnState);
++ XUnmapWindow(dpy, p->win);
++
++ p->swallowing = c;
++ c->mon = p->mon;
++
++ Window w = p->win;
++ p->win = c->win;
++ c->win = w;
++ updatetitle(p);
++ XMoveResizeWindow(dpy, p->win, p->x, p->y, p->w, p->h);
++ arrange(p->mon);
++ configure(p);
++ updateclientlist();
++}
++
++void
++unswallow(Client *c)
++{
++ c->win = c->swallowing->win;
++
++ free(c->swallowing);
++ c->swallowing = NULL;
++
++ /* unfullscreen the client */
++ setfullscreen(c, 0);
++ updatetitle(c);
++ arrange(c->mon);
++ XMapWindow(dpy, c->win);
++ XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
++ setclientstate(c, NormalState);
++ focus(NULL);
++ arrange(c->mon);
++}
++
+ void
+ buttonpress(XEvent *e)
+ {
+@@ -656,6 +723,9 @@ destroynotify(XEvent *e)
+
+ if ((c = wintoclient(ev->window)))
+ unmanage(c, 1);
++
++ else if ((c = swallowingclient(ev->window)))
++ unmanage(c->swallowing, 1);
+ }
+
+ void
+@@ -1022,12 +1092,13 @@ killclient(const Arg *arg)
+ void
+ manage(Window w, XWindowAttributes *wa)
+ {
+- Client *c, *t = NULL;
++ Client *c, *t = NULL, *term = NULL;
+ Window trans = None;
+ XWindowChanges wc;
+
+ c = ecalloc(1, sizeof(Client));
+ c->win = w;
++ c->pid = winpid(w);
+ /* geometry */
+ c->x = c->oldx = wa->x;
+ c->y = c->oldy = wa->y;
+@@ -1042,6 +1113,7 @@ manage(Window w, XWindowAttributes *wa)
+ } else {
+ c->mon = selmon;
+ applyrules(c);
++ term = termforwin(c);
+ }
+
+ if (c->x + WIDTH(c) > c->mon->wx + c->mon->ww)
+@@ -1076,6 +1148,8 @@ manage(Window w, XWindowAttributes *wa)
+ c->mon->sel = c;
+ arrange(c->mon);
+ XMapWindow(dpy, c->win);
++ if (term)
++ swallow(term, c);
+ focus(NULL);
+ }
+
+@@ -1763,6 +1837,20 @@ unmanage(Client *c, int destroyed)
+ Monitor *m = c->mon;
+ XWindowChanges wc;
+
++ if (c->swallowing) {
++ unswallow(c);
++ return;
++ }
++
++ Client *s = swallowingclient(c->win);
++ if (s) {
++ free(s->swallowing);
++ s->swallowing = NULL;
++ arrange(m);
++ focus(NULL);
++ return;
++ }
++
+ detach(c);
+ detachstack(c);
+ if (!destroyed) {
+@@ -1778,9 +1866,12 @@ unmanage(Client *c, int destroyed)
+ XUngrabServer(dpy);
+ }
+ free(c);
+- focus(NULL);
+- updateclientlist();
+- arrange(m);
++
++ if (!s) {
++ arrange(m);
++ focus(NULL);
++ updateclientlist();
++ }
+ }
+
+ void
+@@ -2044,6 +2135,136 @@ view(const Arg *arg)
+ arrange(selmon);
+ }
+
++pid_t
++winpid(Window w)
++{
++
++ pid_t result = 0;
++
++#ifdef __linux__
++ xcb_res_client_id_spec_t spec = {0};
++ spec.client = w;
++ spec.mask = XCB_RES_CLIENT_ID_MASK_LOCAL_CLIENT_PID;
++
++ xcb_generic_error_t *e = NULL;
++ xcb_res_query_client_ids_cookie_t c = xcb_res_query_client_ids(xcon, 1, &spec);
++ xcb_res_query_client_ids_reply_t *r = xcb_res_query_client_ids_reply(xcon, c, &e);
++
++ if (!r)
++ return (pid_t)0;
++
++ xcb_res_client_id_value_iterator_t i = xcb_res_query_client_ids_ids_iterator(r);
++ for (; i.rem; xcb_res_client_id_value_next(&i)) {
++ spec = i.data->spec;
++ if (spec.mask & XCB_RES_CLIENT_ID_MASK_LOCAL_CLIENT_PID) {
++ uint32_t *t = xcb_res_client_id_value_value(i.data);
++ result = *t;
++ break;
++ }
++ }
++
++ free(r);
++
++ if (result == (pid_t)-1)
++ result = 0;
++
++#endif /* __linux__ */
++
++#ifdef __OpenBSD__
++ Atom type;
++ int format;
++ unsigned long len, bytes;
++ unsigned char *prop;
++ pid_t ret;
++
++ if (XGetWindowProperty(dpy, w, XInternAtom(dpy, "_NET_WM_PID", 0), 0, 1, False, AnyPropertyType, &type, &format, &len, &bytes, &prop) != Success || !prop)
++ return 0;
++
++ ret = *(pid_t*)prop;
++ XFree(prop);
++ result = ret;
++
++#endif /* __OpenBSD__ */
++ return result;
++}
++
++pid_t
++getparentprocess(pid_t p)
++{
++ unsigned int v = 0;
++
++#ifdef __linux__
++ FILE *f;
++ char buf[256];
++ snprintf(buf, sizeof(buf) - 1, "/proc/%u/stat", (unsigned)p);
++
++ if (!(f = fopen(buf, "r")))
++ return 0;
++
++ fscanf(f, "%*u %*s %*c %u", &v);
++ fclose(f);
++#endif /* __linux__*/
++
++#ifdef __OpenBSD__
++ int n;
++ kvm_t *kd;
++ struct kinfo_proc *kp;
++
++ kd = kvm_openfiles(NULL, NULL, NULL, KVM_NO_FILES, NULL);
++ if (!kd)
++ return 0;
++
++ kp = kvm_getprocs(kd, KERN_PROC_PID, p, sizeof(*kp), &n);
++ v = kp->p_ppid;
++#endif /* __OpenBSD__ */
++
++ return (pid_t)v;
++}
++
++int
++isdescprocess(pid_t p, pid_t c)
++{
++ while (p != c && c != 0)
++ c = getparentprocess(c);
++
++ return (int)c;
++}
++
++Client *
++termforwin(const Client *w)
++{
++ Client *c;
++ Monitor *m;
++
++ if (!w->pid || w->isterminal)
++ return NULL;
++
++ for (m = mons; m; m = m->next) {
++ for (c = m->clients; c; c = c->next) {
++ if (c->isterminal && !c->swallowing && c->pid && isdescprocess(c->pid, w->pid))
++ return c;
++ }
++ }
++
++ return NULL;
++}
++
++Client *
++swallowingclient(Window w)
++{
++ Client *c;
++ Monitor *m;
++
++ for (m = mons; m; m = m->next) {
++ for (c = m->clients; c; c = c->next) {
++ if (c->swallowing && c->swallowing->win == w)
++ return c;
++ }
++ }
++
++ return NULL;
++}
++
+ Client *
+ wintoclient(Window w)
+ {
+@@ -2133,10 +2354,12 @@ main(int argc, char *argv[])
+ fputs("warning: no locale support\n", stderr);
+ if (!(dpy = XOpenDisplay(NULL)))
+ die("dwm: cannot open display");
++ if (!(xcon = XGetXCBConnection(dpy)))
++ die("dwm: cannot get xcb connection\n");
+ checkotherwm();
+ setup();
+ #ifdef __OpenBSD__
+- if (pledge("stdio rpath proc exec", NULL) == -1)
++ if (pledge("stdio rpath proc exec ps", NULL) == -1)
+ die("pledge");
+ #endif /* __OpenBSD__ */
+ scan();
+--
+2.37.2
+
diff --git a/dwm/dwm-systray-6.4.diff b/dwm/dwm-systray-6.4.diff
@@ -0,0 +1,746 @@
+diff --git a/config.def.h b/config.def.h
+index 9efa774..750529d 100644
+--- a/config.def.h
++++ b/config.def.h
+@@ -3,6 +3,11 @@
+ /* appearance */
+ static const unsigned int borderpx = 1; /* border pixel of windows */
+ static const unsigned int snap = 32; /* snap pixel */
++static const unsigned int systraypinning = 0; /* 0: sloppy systray follows selected monitor, >0: pin systray to monitor X */
++static const unsigned int systrayonleft = 0; /* 0: systray in the right corner, >0: systray on left of status text */
++static const unsigned int systrayspacing = 2; /* systray spacing */
++static const int systraypinningfailfirst = 1; /* 1: if pinning fails, display systray on the first monitor, False: display systray on the last monitor*/
++static const int showsystray = 1; /* 0 means no systray */
+ static const int showbar = 1; /* 0 means no bar */
+ static const int topbar = 1; /* 0 means bottom bar */
+ static const char *fonts[] = { "monospace:size=10" };
+@@ -101,8 +106,8 @@ static const Key keys[] = {
+ /* click can be ClkTagBar, ClkLtSymbol, ClkStatusText, ClkWinTitle, ClkClientWin, or ClkRootWin */
+ static const Button buttons[] = {
+ /* click event mask button function argument */
+- { ClkLtSymbol, 0, Button1, setlayout, {0} },
+- { ClkLtSymbol, 0, Button3, setlayout, {.v = &layouts[2]} },
++ { ClkTagBar, MODKEY, Button1, tag, {0} },
++ { ClkTagBar, MODKEY, Button3, toggletag, {0} },
+ { ClkWinTitle, 0, Button2, zoom, {0} },
+ { ClkStatusText, 0, Button2, spawn, {.v = termcmd } },
+ { ClkClientWin, MODKEY, Button1, movemouse, {0} },
+diff --git a/dwm.c b/dwm.c
+index 03baf42..4611a03 100644
+--- a/dwm.c
++++ b/dwm.c
+@@ -57,12 +57,27 @@
+ #define TAGMASK ((1 << LENGTH(tags)) - 1)
+ #define TEXTW(X) (drw_fontset_getwidth(drw, (X)) + lrpad)
+
++#define SYSTEM_TRAY_REQUEST_DOCK 0
++/* XEMBED messages */
++#define XEMBED_EMBEDDED_NOTIFY 0
++#define XEMBED_WINDOW_ACTIVATE 1
++#define XEMBED_FOCUS_IN 4
++#define XEMBED_MODALITY_ON 10
++#define XEMBED_MAPPED (1 << 0)
++#define XEMBED_WINDOW_ACTIVATE 1
++#define XEMBED_WINDOW_DEACTIVATE 2
++#define VERSION_MAJOR 0
++#define VERSION_MINOR 0
++#define XEMBED_EMBEDDED_VERSION (VERSION_MAJOR << 16) | VERSION_MINOR
++
+ /* enums */
+ enum { CurNormal, CurResize, CurMove, CurLast }; /* cursor */
+ enum { SchemeNorm, SchemeSel }; /* color schemes */
+ enum { NetSupported, NetWMName, NetWMState, NetWMCheck,
++ NetSystemTray, NetSystemTrayOP, NetSystemTrayOrientation, NetSystemTrayOrientationHorz,
+ NetWMFullscreen, NetActiveWindow, NetWMWindowType,
+ NetWMWindowTypeDialog, NetClientList, NetLast }; /* EWMH atoms */
++enum { Manager, Xembed, XembedInfo, XLast }; /* Xembed atoms */
+ enum { WMProtocols, WMDelete, WMState, WMTakeFocus, WMLast }; /* default atoms */
+ enum { ClkTagBar, ClkLtSymbol, ClkStatusText, ClkWinTitle,
+ ClkClientWin, ClkRootWin, ClkLast }; /* clicks */
+@@ -141,6 +156,12 @@ typedef struct {
+ int monitor;
+ } Rule;
+
++typedef struct Systray Systray;
++struct Systray {
++ Window win;
++ Client *icons;
++};
++
+ /* function declarations */
+ static void applyrules(Client *c);
+ static int applysizehints(Client *c, int *x, int *y, int *w, int *h, int interact);
+@@ -172,6 +193,7 @@ static void focusstack(const Arg *arg);
+ static Atom getatomprop(Client *c, Atom prop);
+ static int getrootptr(int *x, int *y);
+ static long getstate(Window w);
++static unsigned int getsystraywidth();
+ static int gettextprop(Window w, Atom atom, char *text, unsigned int size);
+ static void grabbuttons(Client *c, int focused);
+ static void grabkeys(void);
+@@ -189,13 +211,16 @@ static void pop(Client *c);
+ static void propertynotify(XEvent *e);
+ static void quit(const Arg *arg);
+ static Monitor *recttomon(int x, int y, int w, int h);
++static void removesystrayicon(Client *i);
+ static void resize(Client *c, int x, int y, int w, int h, int interact);
++static void resizebarwin(Monitor *m);
+ static void resizeclient(Client *c, int x, int y, int w, int h);
+ static void resizemouse(const Arg *arg);
++static void resizerequest(XEvent *e);
+ static void restack(Monitor *m);
+ static void run(void);
+ static void scan(void);
+-static int sendevent(Client *c, Atom proto);
++static int sendevent(Window w, Atom proto, int m, long d0, long d1, long d2, long d3, long d4);
+ static void sendmon(Client *c, Monitor *m);
+ static void setclientstate(Client *c, long state);
+ static void setfocus(Client *c);
+@@ -207,6 +232,7 @@ static void seturgent(Client *c, int urg);
+ static void showhide(Client *c);
+ static void sigchld(int unused);
+ static void spawn(const Arg *arg);
++static Monitor *systraytomon(Monitor *m);
+ static void tag(const Arg *arg);
+ static void tagmon(const Arg *arg);
+ static void tile(Monitor *m);
+@@ -224,18 +250,23 @@ static int updategeom(void);
+ static void updatenumlockmask(void);
+ static void updatesizehints(Client *c);
+ static void updatestatus(void);
++static void updatesystray(void);
++static void updatesystrayicongeom(Client *i, int w, int h);
++static void updatesystrayiconstate(Client *i, XPropertyEvent *ev);
+ static void updatetitle(Client *c);
+ static void updatewindowtype(Client *c);
+ static void updatewmhints(Client *c);
+ static void view(const Arg *arg);
+ static Client *wintoclient(Window w);
+ static Monitor *wintomon(Window w);
++static Client *wintosystrayicon(Window w);
+ static int xerror(Display *dpy, XErrorEvent *ee);
+ static int xerrordummy(Display *dpy, XErrorEvent *ee);
+ static int xerrorstart(Display *dpy, XErrorEvent *ee);
+ static void zoom(const Arg *arg);
+
+ /* variables */
++static Systray *systray = NULL;
+ static const char broken[] = "broken";
+ static char stext[256];
+ static int screen;
+@@ -258,9 +289,10 @@ static void (*handler[LASTEvent]) (XEvent *) = {
+ [MapRequest] = maprequest,
+ [MotionNotify] = motionnotify,
+ [PropertyNotify] = propertynotify,
++ [ResizeRequest] = resizerequest,
+ [UnmapNotify] = unmapnotify
+ };
+-static Atom wmatom[WMLast], netatom[NetLast];
++static Atom wmatom[WMLast], netatom[NetLast], xatom[XLast];
+ static int running = 1;
+ static Cur *cursor[CurLast];
+ static Clr **scheme;
+@@ -442,7 +474,7 @@ buttonpress(XEvent *e)
+ arg.ui = 1 << i;
+ } else if (ev->x < x + TEXTW(selmon->ltsymbol))
+ click = ClkLtSymbol;
+- else if (ev->x > selmon->ww - (int)TEXTW(stext))
++ else if (ev->x > selmon->ww - (int)TEXTW(stext) - getsystraywidth())
+ click = ClkStatusText;
+ else
+ click = ClkWinTitle;
+@@ -485,6 +517,13 @@ cleanup(void)
+ XUngrabKey(dpy, AnyKey, AnyModifier, root);
+ while (mons)
+ cleanupmon(mons);
++
++ if (showsystray) {
++ XUnmapWindow(dpy, systray->win);
++ XDestroyWindow(dpy, systray->win);
++ free(systray);
++ }
++
+ for (i = 0; i < CurLast; i++)
+ drw_cur_free(drw, cursor[i]);
+ for (i = 0; i < LENGTH(colors); i++)
+@@ -516,9 +555,58 @@ cleanupmon(Monitor *mon)
+ void
+ clientmessage(XEvent *e)
+ {
++ XWindowAttributes wa;
++ XSetWindowAttributes swa;
+ XClientMessageEvent *cme = &e->xclient;
+ Client *c = wintoclient(cme->window);
+
++ if (showsystray && cme->window == systray->win && cme->message_type == netatom[NetSystemTrayOP]) {
++ /* add systray icons */
++ if (cme->data.l[1] == SYSTEM_TRAY_REQUEST_DOCK) {
++ if (!(c = (Client *)calloc(1, sizeof(Client))))
++ die("fatal: could not malloc() %u bytes\n", sizeof(Client));
++ if (!(c->win = cme->data.l[2])) {
++ free(c);
++ return;
++ }
++ c->mon = selmon;
++ c->next = systray->icons;
++ systray->icons = c;
++ if (!XGetWindowAttributes(dpy, c->win, &wa)) {
++ /* use sane defaults */
++ wa.width = bh;
++ wa.height = bh;
++ wa.border_width = 0;
++ }
++ c->x = c->oldx = c->y = c->oldy = 0;
++ c->w = c->oldw = wa.width;
++ c->h = c->oldh = wa.height;
++ c->oldbw = wa.border_width;
++ c->bw = 0;
++ c->isfloating = True;
++ /* reuse tags field as mapped status */
++ c->tags = 1;
++ updatesizehints(c);
++ updatesystrayicongeom(c, wa.width, wa.height);
++ XAddToSaveSet(dpy, c->win);
++ XSelectInput(dpy, c->win, StructureNotifyMask | PropertyChangeMask | ResizeRedirectMask);
++ XReparentWindow(dpy, c->win, systray->win, 0, 0);
++ /* use parents background color */
++ swa.background_pixel = scheme[SchemeNorm][ColBg].pixel;
++ XChangeWindowAttributes(dpy, c->win, CWBackPixel, &swa);
++ sendevent(c->win, netatom[Xembed], StructureNotifyMask, CurrentTime, XEMBED_EMBEDDED_NOTIFY, 0 , systray->win, XEMBED_EMBEDDED_VERSION);
++ /* FIXME not sure if I have to send these events, too */
++ sendevent(c->win, netatom[Xembed], StructureNotifyMask, CurrentTime, XEMBED_FOCUS_IN, 0 , systray->win, XEMBED_EMBEDDED_VERSION);
++ sendevent(c->win, netatom[Xembed], StructureNotifyMask, CurrentTime, XEMBED_WINDOW_ACTIVATE, 0 , systray->win, XEMBED_EMBEDDED_VERSION);
++ sendevent(c->win, netatom[Xembed], StructureNotifyMask, CurrentTime, XEMBED_MODALITY_ON, 0 , systray->win, XEMBED_EMBEDDED_VERSION);
++ XSync(dpy, False);
++ resizebarwin(selmon);
++ updatesystray();
++ setclientstate(c, NormalState);
++ }
++ return;
++ }
++
+ if (!c)
+ return;
+ if (cme->message_type == netatom[NetWMState]) {
+@@ -571,7 +659,7 @@ configurenotify(XEvent *e)
+ for (c = m->clients; c; c = c->next)
+ if (c->isfullscreen)
+ resizeclient(c, m->mx, m->my, m->mw, m->mh);
+- XMoveResizeWindow(dpy, m->barwin, m->wx, m->by, m->ww, bh);
++ resizebarwin(m);
+ }
+ focus(NULL);
+ arrange(NULL);
+@@ -656,6 +744,11 @@ destroynotify(XEvent *e)
+
+ if ((c = wintoclient(ev->window)))
+ unmanage(c, 1);
++ else if ((c = wintosystrayicon(ev->window))) {
++ removesystrayicon(c);
++ resizebarwin(selmon);
++ updatesystray();
++ }
+ }
+
+ void
+@@ -699,7 +792,7 @@ dirtomon(int dir)
+ void
+ drawbar(Monitor *m)
+ {
+- int x, w, tw = 0;
++ int x, w, tw = 0, stw = 0;
+ int boxs = drw->fonts->h / 9;
+ int boxw = drw->fonts->h / 6 + 2;
+ unsigned int i, occ = 0, urg = 0;
+@@ -708,13 +801,17 @@ drawbar(Monitor *m)
+ if (!m->showbar)
+ return;
+
++ if(showsystray && m == systraytomon(m) && !systrayonleft)
++ stw = getsystraywidth();
++
+ /* draw status first so it can be overdrawn by tags later */
+ if (m == selmon) { /* status is only drawn on selected monitor */
+ drw_setscheme(drw, scheme[SchemeNorm]);
+- tw = TEXTW(stext) - lrpad + 2; /* 2px right padding */
+- drw_text(drw, m->ww - tw, 0, tw, bh, 0, stext, 0);
++ tw = TEXTW(stext) - lrpad / 2 + 2; /* 2px extra right padding */
++ drw_text(drw, m->ww - tw - stw, 0, tw, bh, lrpad / 2 - 2, stext, 0);
+ }
+
++ resizebarwin(m);
+ for (c = m->clients; c; c = c->next) {
+ occ |= c->tags;
+ if (c->isurgent)
+@@ -735,7 +832,7 @@ drawbar(Monitor *m)
+ drw_setscheme(drw, scheme[SchemeNorm]);
+ x = drw_text(drw, x, 0, w, bh, lrpad / 2, m->ltsymbol, 0);
+
+- if ((w = m->ww - tw - x) > bh) {
++ if ((w = m->ww - tw - stw - x) > bh) {
+ if (m->sel) {
+ drw_setscheme(drw, scheme[m == selmon ? SchemeSel : SchemeNorm]);
+ drw_text(drw, x, 0, w, bh, lrpad / 2, m->sel->name, 0);
+@@ -746,7 +843,7 @@ drawbar(Monitor *m)
+ drw_rect(drw, x, 0, w, bh, 1, 1);
+ }
+ }
+- drw_map(drw, m->barwin, 0, 0, m->ww, bh);
++ drw_map(drw, m->barwin, 0, 0, m->ww - stw, bh);
+ }
+
+ void
+@@ -783,8 +880,11 @@ expose(XEvent *e)
+ Monitor *m;
+ XExposeEvent *ev = &e->xexpose;
+
+- if (ev->count == 0 && (m = wintomon(ev->window)))
++ if (ev->count == 0 && (m = wintomon(ev->window))) {
+ drawbar(m);
++ if (m == selmon)
++ updatesystray();
++ }
+ }
+
+ void
+@@ -870,14 +970,32 @@ getatomprop(Client *c, Atom prop)
+ unsigned char *p = NULL;
+ Atom da, atom = None;
+
+- if (XGetWindowProperty(dpy, c->win, prop, 0L, sizeof atom, False, XA_ATOM,
++ /* FIXME getatomprop should return the number of items and a pointer to
++ * the stored data instead of this workaround */
++ Atom req = XA_ATOM;
++ if (prop == xatom[XembedInfo])
++ req = xatom[XembedInfo];
++
++ if (XGetWindowProperty(dpy, c->win, prop, 0L, sizeof atom, False, req,
+ &da, &di, &dl, &dl, &p) == Success && p) {
+ atom = *(Atom *)p;
++ if (da == xatom[XembedInfo] && dl == 2)
++ atom = ((Atom *)p)[1];
+ XFree(p);
+ }
+ return atom;
+ }
+
++unsigned int
++getsystraywidth()
++{
++ unsigned int w = 0;
++ Client *i;
++ if(showsystray)
++ for(i = systray->icons; i; w += i->w + systrayspacing, i = i->next) ;
++ return w ? w + systrayspacing : 1;
++}
++
+ int
+ getrootptr(int *x, int *y)
+ {
+@@ -1018,7 +1136,8 @@ killclient(const Arg *arg)
+ {
+ if (!selmon->sel)
+ return;
+- if (!sendevent(selmon->sel, wmatom[WMDelete])) {
++
++ if (!sendevent(selmon->sel->win, wmatom[WMDelete], NoEventMask, wmatom[WMDelete], CurrentTime, 0 , 0, 0)) {
+ XGrabServer(dpy);
+ XSetErrorHandler(xerrordummy);
+ XSetCloseDownMode(dpy, DestroyAll);
+@@ -1105,6 +1224,13 @@ maprequest(XEvent *e)
+ static XWindowAttributes wa;
+ XMapRequestEvent *ev = &e->xmaprequest;
+
++ Client *i;
++ if ((i = wintosystrayicon(ev->window))) {
++ sendevent(i->win, netatom[Xembed], StructureNotifyMask, CurrentTime, XEMBED_WINDOW_ACTIVATE, 0, systray->win, XEMBED_EMBEDDED_VERSION);
++ resizebarwin(selmon);
++ updatesystray();
++ }
++
+ if (!XGetWindowAttributes(dpy, ev->window, &wa) || wa.override_redirect)
+ return;
+ if (!wintoclient(ev->window))
+@@ -1226,6 +1352,17 @@ propertynotify(XEvent *e)
+ Window trans;
+ XPropertyEvent *ev = &e->xproperty;
+
++ if ((c = wintosystrayicon(ev->window))) {
++ if (ev->atom == XA_WM_NORMAL_HINTS) {
++ updatesizehints(c);
++ updatesystrayicongeom(c, c->w, c->h);
++ }
++ else
++ updatesystrayiconstate(c, ev);
++ resizebarwin(selmon);
++ updatesystray();
++ }
++
+ if ((ev->window == root) && (ev->atom == XA_WM_NAME))
+ updatestatus();
+ else if (ev->state == PropertyDelete)
+@@ -1276,6 +1413,19 @@ recttomon(int x, int y, int w, int h)
+ return r;
+ }
+
++void
++removesystrayicon(Client *i)
++{
++ Client **ii;
++
++ if (!showsystray || !i)
++ return;
++ for (ii = &systray->icons; *ii && *ii != i; ii = &(*ii)->next);
++ if (ii)
++ *ii = i->next;
++ free(i);
++}
++
+ void
+ resize(Client *c, int x, int y, int w, int h, int interact)
+ {
+@@ -1283,6 +1433,14 @@ resize(Client *c, int x, int y, int w, int h, int interact)
+ resizeclient(c, x, y, w, h);
+ }
+
++void
++resizebarwin(Monitor *m) {
++ unsigned int w = m->ww;
++ if (showsystray && m == systraytomon(m) && !systrayonleft)
++ w -= getsystraywidth();
++ XMoveResizeWindow(dpy, m->barwin, m->wx, m->by, w, bh);
++}
++
+ void
+ resizeclient(Client *c, int x, int y, int w, int h)
+ {
+@@ -1298,6 +1456,19 @@ resizeclient(Client *c, int x, int y, int w, int h)
+ XSync(dpy, False);
+ }
+
++void
++resizerequest(XEvent *e)
++{
++ XResizeRequestEvent *ev = &e->xresizerequest;
++ Client *i;
++
++ if ((i = wintosystrayicon(ev->window))) {
++ updatesystrayicongeom(i, ev->width, ev->height);
++ resizebarwin(selmon);
++ updatesystray();
++ }
++}
++
+ void
+ resizemouse(const Arg *arg)
+ {
+@@ -1444,26 +1615,37 @@ setclientstate(Client *c, long state)
+ }
+
+ int
+-sendevent(Client *c, Atom proto)
++sendevent(Window w, Atom proto, int mask, long d0, long d1, long d2, long d3, long d4)
+ {
+ int n;
+- Atom *protocols;
++ Atom *protocols, mt;
+ int exists = 0;
+ XEvent ev;
+
+- if (XGetWMProtocols(dpy, c->win, &protocols, &n)) {
+- while (!exists && n--)
+- exists = protocols[n] == proto;
+- XFree(protocols);
++ if (proto == wmatom[WMTakeFocus] || proto == wmatom[WMDelete]) {
++ mt = wmatom[WMProtocols];
++ if (XGetWMProtocols(dpy, w, &protocols, &n)) {
++ while (!exists && n--)
++ exists = protocols[n] == proto;
++ XFree(protocols);
++ }
++ }
++ else {
++ exists = True;
++ mt = proto;
+ }
++
+ if (exists) {
+ ev.type = ClientMessage;
+- ev.xclient.window = c->win;
+- ev.xclient.message_type = wmatom[WMProtocols];
++ ev.xclient.window = w;
++ ev.xclient.message_type = mt;
+ ev.xclient.format = 32;
+- ev.xclient.data.l[0] = proto;
+- ev.xclient.data.l[1] = CurrentTime;
+- XSendEvent(dpy, c->win, False, NoEventMask, &ev);
++ ev.xclient.data.l[0] = d0;
++ ev.xclient.data.l[1] = d1;
++ ev.xclient.data.l[2] = d2;
++ ev.xclient.data.l[3] = d3;
++ ev.xclient.data.l[4] = d4;
++ XSendEvent(dpy, w, False, mask, &ev);
+ }
+ return exists;
+ }
+@@ -1477,7 +1659,7 @@ setfocus(Client *c)
+ XA_WINDOW, 32, PropModeReplace,
+ (unsigned char *) &(c->win), 1);
+ }
+- sendevent(c, wmatom[WMTakeFocus]);
++ sendevent(c->win, wmatom[WMTakeFocus], NoEventMask, wmatom[WMTakeFocus], CurrentTime, 0, 0, 0);
+ }
+
+ void
+@@ -1566,6 +1748,10 @@ setup(void)
+ wmatom[WMTakeFocus] = XInternAtom(dpy, "WM_TAKE_FOCUS", False);
+ netatom[NetActiveWindow] = XInternAtom(dpy, "_NET_ACTIVE_WINDOW", False);
+ netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
++ netatom[NetSystemTray] = XInternAtom(dpy, "_NET_SYSTEM_TRAY_S0", False);
++ netatom[NetSystemTrayOP] = XInternAtom(dpy, "_NET_SYSTEM_TRAY_OPCODE", False);
++ netatom[NetSystemTrayOrientation] = XInternAtom(dpy, "_NET_SYSTEM_TRAY_ORIENTATION", False);
++ netatom[NetSystemTrayOrientationHorz] = XInternAtom(dpy, "_NET_SYSTEM_TRAY_ORIENTATION_HORZ", False);
+ netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
+ netatom[NetWMState] = XInternAtom(dpy, "_NET_WM_STATE", False);
+ netatom[NetWMCheck] = XInternAtom(dpy, "_NET_SUPPORTING_WM_CHECK", False);
+@@ -1573,6 +1759,9 @@ setup(void)
+ netatom[NetWMWindowType] = XInternAtom(dpy, "_NET_WM_WINDOW_TYPE", False);
+ netatom[NetWMWindowTypeDialog] = XInternAtom(dpy, "_NET_WM_WINDOW_TYPE_DIALOG", False);
+ netatom[NetClientList] = XInternAtom(dpy, "_NET_CLIENT_LIST", False);
++ xatom[Manager] = XInternAtom(dpy, "MANAGER", False);
++ xatom[Xembed] = XInternAtom(dpy, "_XEMBED", False);
++ xatom[XembedInfo] = XInternAtom(dpy, "_XEMBED_INFO", False);
+ /* init cursors */
+ cursor[CurNormal] = drw_cur_create(drw, XC_left_ptr);
+ cursor[CurResize] = drw_cur_create(drw, XC_sizing);
+@@ -1581,6 +1770,8 @@ setup(void)
+ scheme = ecalloc(LENGTH(colors), sizeof(Clr *));
+ for (i = 0; i < LENGTH(colors); i++)
+ scheme[i] = drw_scm_create(drw, colors[i], 3);
++ /* init system tray */
++ updatesystray();
+ /* init bars */
+ updatebars();
+ updatestatus();
+@@ -1711,7 +1902,18 @@ togglebar(const Arg *arg)
+ {
+ selmon->showbar = !selmon->showbar;
+ updatebarpos(selmon);
+- XMoveResizeWindow(dpy, selmon->barwin, selmon->wx, selmon->by, selmon->ww, bh);
++ resizebarwin(selmon);
++ if (showsystray) {
++ XWindowChanges wc;
++ if (!selmon->showbar)
++ wc.y = -bh;
++ else if (selmon->showbar) {
++ wc.y = 0;
++ if (!selmon->topbar)
++ wc.y = selmon->mh - bh;
++ }
++ XConfigureWindow(dpy, systray->win, CWY, &wc);
++ }
+ arrange(selmon);
+ }
+
+@@ -1807,11 +2009,18 @@ unmapnotify(XEvent *e)
+ else
+ unmanage(c, 0);
+ }
++ else if ((c = wintosystrayicon(ev->window))) {
++ /* KLUDGE! sometimes icons occasionally unmap their windows, but do
++ * _not_ destroy them. We map those windows back */
++ XMapRaised(dpy, c->win);
++ updatesystray();
++ }
+ }
+
+ void
+ updatebars(void)
+ {
++ unsigned int w;
+ Monitor *m;
+ XSetWindowAttributes wa = {
+ .override_redirect = True,
+@@ -1822,10 +2031,15 @@ updatebars(void)
+ for (m = mons; m; m = m->next) {
+ if (m->barwin)
+ continue;
+- m->barwin = XCreateWindow(dpy, root, m->wx, m->by, m->ww, bh, 0, DefaultDepth(dpy, screen),
++ w = m->ww;
++ if (showsystray && m == systraytomon(m))
++ w -= getsystraywidth();
++ m->barwin = XCreateWindow(dpy, root, m->wx, m->by, w, bh, 0, DefaultDepth(dpy, screen),
+ CopyFromParent, DefaultVisual(dpy, screen),
+ CWOverrideRedirect|CWBackPixmap|CWEventMask, &wa);
+ XDefineCursor(dpy, m->barwin, cursor[CurNormal]->cursor);
++ if (showsystray && m == systraytomon(m))
++ XMapRaised(dpy, systray->win);
+ XMapRaised(dpy, m->barwin);
+ XSetClassHint(dpy, m->barwin, &ch);
+ }
+@@ -2002,6 +2216,125 @@ updatestatus(void)
+ if (!gettextprop(root, XA_WM_NAME, stext, sizeof(stext)))
+ strcpy(stext, "dwm-"VERSION);
+ drawbar(selmon);
++ updatesystray();
++}
++
++
++void
++updatesystrayicongeom(Client *i, int w, int h)
++{
++ if (i) {
++ i->h = bh;
++ if (w == h)
++ i->w = bh;
++ else if (h == bh)
++ i->w = w;
++ else
++ i->w = (int) ((float)bh * ((float)w / (float)h));
++ applysizehints(i, &(i->x), &(i->y), &(i->w), &(i->h), False);
++ /* force icons into the systray dimensions if they don't want to */
++ if (i->h > bh) {
++ if (i->w == i->h)
++ i->w = bh;
++ else
++ i->w = (int) ((float)bh * ((float)i->w / (float)i->h));
++ i->h = bh;
++ }
++ }
++}
++
++void
++updatesystrayiconstate(Client *i, XPropertyEvent *ev)
++{
++ long flags;
++ int code = 0;
++
++ if (!showsystray || !i || ev->atom != xatom[XembedInfo] ||
++ !(flags = getatomprop(i, xatom[XembedInfo])))
++ return;
++
++ if (flags & XEMBED_MAPPED && !i->tags) {
++ i->tags = 1;
++ code = XEMBED_WINDOW_ACTIVATE;
++ XMapRaised(dpy, i->win);
++ setclientstate(i, NormalState);
++ }
++ else if (!(flags & XEMBED_MAPPED) && i->tags) {
++ i->tags = 0;
++ code = XEMBED_WINDOW_DEACTIVATE;
++ XUnmapWindow(dpy, i->win);
++ setclientstate(i, WithdrawnState);
++ }
++ else
++ return;
++ sendevent(i->win, xatom[Xembed], StructureNotifyMask, CurrentTime, code, 0,
++ systray->win, XEMBED_EMBEDDED_VERSION);
++}
++
++void
++updatesystray(void)
++{
++ XSetWindowAttributes wa;
++ XWindowChanges wc;
++ Client *i;
++ Monitor *m = systraytomon(NULL);
++ unsigned int x = m->mx + m->mw;
++ unsigned int sw = TEXTW(stext) - lrpad + systrayspacing;
++ unsigned int w = 1;
++
++ if (!showsystray)
++ return;
++ if (systrayonleft)
++ x -= sw + lrpad / 2;
++ if (!systray) {
++ /* init systray */
++ if (!(systray = (Systray *)calloc(1, sizeof(Systray))))
++ die("fatal: could not malloc() %u bytes\n", sizeof(Systray));
++ systray->win = XCreateSimpleWindow(dpy, root, x, m->by, w, bh, 0, 0, scheme[SchemeSel][ColBg].pixel);
++ wa.event_mask = ButtonPressMask | ExposureMask;
++ wa.override_redirect = True;
++ wa.background_pixel = scheme[SchemeNorm][ColBg].pixel;
++ XSelectInput(dpy, systray->win, SubstructureNotifyMask);
++ XChangeProperty(dpy, systray->win, netatom[NetSystemTrayOrientation], XA_CARDINAL, 32,
++ PropModeReplace, (unsigned char *)&netatom[NetSystemTrayOrientationHorz], 1);
++ XChangeWindowAttributes(dpy, systray->win, CWEventMask|CWOverrideRedirect|CWBackPixel, &wa);
++ XMapRaised(dpy, systray->win);
++ XSetSelectionOwner(dpy, netatom[NetSystemTray], systray->win, CurrentTime);
++ if (XGetSelectionOwner(dpy, netatom[NetSystemTray]) == systray->win) {
++ sendevent(root, xatom[Manager], StructureNotifyMask, CurrentTime, netatom[NetSystemTray], systray->win, 0, 0);
++ XSync(dpy, False);
++ }
++ else {
++ fprintf(stderr, "dwm: unable to obtain system tray.\n");
++ free(systray);
++ systray = NULL;
++ return;
++ }
++ }
++ for (w = 0, i = systray->icons; i; i = i->next) {
++ /* make sure the background color stays the same */
++ wa.background_pixel = scheme[SchemeNorm][ColBg].pixel;
++ XChangeWindowAttributes(dpy, i->win, CWBackPixel, &wa);
++ XMapRaised(dpy, i->win);
++ w += systrayspacing;
++ i->x = w;
++ XMoveResizeWindow(dpy, i->win, i->x, 0, i->w, i->h);
++ w += i->w;
++ if (i->mon != m)
++ i->mon = m;
++ }
++ w = w ? w + systrayspacing : 1;
++ x -= w;
++ XMoveResizeWindow(dpy, systray->win, x, m->by, w, bh);
++ wc.x = x; wc.y = m->by; wc.width = w; wc.height = bh;
++ wc.stack_mode = Above; wc.sibling = m->barwin;
++ XConfigureWindow(dpy, systray->win, CWX|CWY|CWWidth|CWHeight|CWSibling|CWStackMode, &wc);
++ XMapWindow(dpy, systray->win);
++ XMapSubwindows(dpy, systray->win);
++ /* redraw background */
++ XSetForeground(dpy, drw->gc, scheme[SchemeNorm][ColBg].pixel);
++ XFillRectangle(dpy, systray->win, drw->gc, 0, 0, w, bh);
++ XSync(dpy, False);
+ }
+
+ void
+@@ -2069,6 +2402,16 @@ wintoclient(Window w)
+ return NULL;
+ }
+
++Client *
++wintosystrayicon(Window w) {
++ Client *i = NULL;
++
++ if (!showsystray || !w)
++ return i;
++ for (i = systray->icons; i && i->win != w; i = i->next) ;
++ return i;
++}
++
+ Monitor *
+ wintomon(Window w)
+ {
+@@ -2122,6 +2465,22 @@ xerrorstart(Display *dpy, XErrorEvent *ee)
+ return -1;
+ }
+
++Monitor *
++systraytomon(Monitor *m) {
++ Monitor *t;
++ int i, n;
++ if(!systraypinning) {
++ if(!m)
++ return selmon;
++ return m == selmon ? m : NULL;
++ }
++ for(n = 1, t = mons; t && t->next; n++, t = t->next) ;
++ for(i = 1, t = mons; t && t->next && i < systraypinning; i++, t = t->next) ;
++ if(systraypinningfailfirst && n < systraypinning)
++ return mons;
++ return t;
++}
++
+ void
+ zoom(const Arg *arg)
+ {
diff --git a/dwm/dwm.1 b/dwm/dwm.1
@@ -0,0 +1,176 @@
+.TH DWM 1 dwm\-VERSION
+.SH NAME
+dwm \- dynamic window manager
+.SH SYNOPSIS
+.B dwm
+.RB [ \-v ]
+.SH DESCRIPTION
+dwm is a dynamic window manager for X. It manages windows in tiled, monocle
+and floating layouts. Either layout can be applied dynamically, optimising the
+environment for the application in use and the task performed.
+.P
+In tiled layouts windows are managed in a master and stacking area. The master
+area on the left contains one window by default, and the stacking area on the
+right contains all other windows. The number of master area windows can be
+adjusted from zero to an arbitrary number. In monocle layout all windows are
+maximised to the screen size. In floating layout windows can be resized and
+moved freely. Dialog windows are always managed floating, regardless of the
+layout applied.
+.P
+Windows are grouped by tags. Each window can be tagged with one or multiple
+tags. Selecting certain tags displays all windows with these tags.
+.P
+Each screen contains a small status bar which displays all available tags, the
+layout, the title of the focused window, and the text read from the root window
+name property, if the screen is focused. A floating window is indicated with an
+empty square and a maximised floating window is indicated with a filled square
+before the windows title. The selected tags are indicated with a different
+color. The tags of the focused window are indicated with a filled square in the
+top left corner. The tags which are applied to one or more windows are
+indicated with an empty square in the top left corner.
+.P
+dwm draws a small border around windows to indicate the focus state.
+.SH OPTIONS
+.TP
+.B \-v
+prints version information to stderr, then exits.
+.SH USAGE
+.SS Status bar
+.TP
+.B X root window name
+is read and displayed in the status text area. It can be set with the
+.BR xsetroot (1)
+command.
+.TP
+.B Button1
+click on a tag label to display all windows with that tag, click on the layout
+label toggles between tiled and floating layout.
+.TP
+.B Button3
+click on a tag label adds/removes all windows with that tag to/from the view.
+.TP
+.B Mod1\-Button1
+click on a tag label applies that tag to the focused window.
+.TP
+.B Mod1\-Button3
+click on a tag label adds/removes that tag to/from the focused window.
+.SS Keyboard commands
+.TP
+.B Mod1\-Shift\-Return
+Start
+.BR st(1).
+.TP
+.B Mod1\-p
+Spawn
+.BR dmenu(1)
+for launching other programs.
+.TP
+.B Mod1\-,
+Focus previous screen, if any.
+.TP
+.B Mod1\-.
+Focus next screen, if any.
+.TP
+.B Mod1\-Shift\-,
+Send focused window to previous screen, if any.
+.TP
+.B Mod1\-Shift\-.
+Send focused window to next screen, if any.
+.TP
+.B Mod1\-b
+Toggles bar on and off.
+.TP
+.B Mod1\-t
+Sets tiled layout.
+.TP
+.B Mod1\-f
+Sets floating layout.
+.TP
+.B Mod1\-m
+Sets monocle layout.
+.TP
+.B Mod1\-space
+Toggles between current and previous layout.
+.TP
+.B Mod1\-j
+Focus next window.
+.TP
+.B Mod1\-k
+Focus previous window.
+.TP
+.B Mod1\-i
+Increase number of windows in master area.
+.TP
+.B Mod1\-d
+Decrease number of windows in master area.
+.TP
+.B Mod1\-l
+Increase master area size.
+.TP
+.B Mod1\-h
+Decrease master area size.
+.TP
+.B Mod1\-Return
+Zooms/cycles focused window to/from master area (tiled layouts only).
+.TP
+.B Mod1\-Shift\-c
+Close focused window.
+.TP
+.B Mod1\-Shift\-space
+Toggle focused window between tiled and floating state.
+.TP
+.B Mod1\-Tab
+Toggles to the previously selected tags.
+.TP
+.B Mod1\-Shift\-[1..n]
+Apply nth tag to focused window.
+.TP
+.B Mod1\-Shift\-0
+Apply all tags to focused window.
+.TP
+.B Mod1\-Control\-Shift\-[1..n]
+Add/remove nth tag to/from focused window.
+.TP
+.B Mod1\-[1..n]
+View all windows with nth tag.
+.TP
+.B Mod1\-0
+View all windows with any tag.
+.TP
+.B Mod1\-Control\-[1..n]
+Add/remove all windows with nth tag to/from the view.
+.TP
+.B Mod1\-Shift\-q
+Quit dwm.
+.SS Mouse commands
+.TP
+.B Mod1\-Button1
+Move focused window while dragging. Tiled windows will be toggled to the floating state.
+.TP
+.B Mod1\-Button2
+Toggles focused window between floating and tiled state.
+.TP
+.B Mod1\-Button3
+Resize focused window while dragging. Tiled windows will be toggled to the floating state.
+.SH CUSTOMIZATION
+dwm is customized by creating a custom config.h and (re)compiling the source
+code. This keeps it fast, secure and simple.
+.SH SEE ALSO
+.BR dmenu (1),
+.BR st (1)
+.SH ISSUES
+Java applications which use the XToolkit/XAWT backend may draw grey windows
+only. The XToolkit/XAWT backend breaks ICCCM-compliance in recent JDK 1.5 and early
+JDK 1.6 versions, because it assumes a reparenting window manager. Possible workarounds
+are using JDK 1.4 (which doesn't contain the XToolkit/XAWT backend) or setting the
+environment variable
+.BR AWT_TOOLKIT=MToolkit
+(to use the older Motif backend instead) or running
+.B xprop -root -f _NET_WM_NAME 32a -set _NET_WM_NAME LG3D
+or
+.B wmname LG3D
+(to pretend that a non-reparenting window manager is running that the
+XToolkit/XAWT backend can recognize) or when using OpenJDK setting the environment variable
+.BR _JAVA_AWT_WM_NONREPARENTING=1 .
+.SH BUGS
+Send all bug reports with a patch to hackers@suckless.org.
diff --git a/dwm/dwm.c b/dwm/dwm.c
@@ -0,0 +1,2770 @@
+/* See LICENSE file for copyright and license details.
+ *
+ * dynamic window manager is designed like any other X client as well. It is
+ * driven through handling X events. In contrast to other X clients, a window
+ * manager selects for SubstructureRedirectMask on the root window, to receive
+ * events about window (dis-)appearance. Only one X connection at a time is
+ * allowed to select for this event mask.
+ *
+ * The event handlers of dwm are organized in an array which is accessed
+ * whenever a new event has been fetched. This allows event dispatching
+ * in O(1) time.
+ *
+ * Each child of the root window is called a client, except windows which have
+ * set the override_redirect flag. Clients are organized in a linked client
+ * list on each monitor, the focus history is remembered through a stack list
+ * on each monitor. Each client contains a bit array to indicate the tags of a
+ * client.
+ *
+ * Keys and tagging rules are organized as arrays and defined in config.h.
+ *
+ * To understand everything else, start reading main().
+ */
+#include <errno.h>
+#include <locale.h>
+#include <signal.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <X11/cursorfont.h>
+#include <X11/keysym.h>
+#include <X11/Xatom.h>
+#include <X11/Xlib.h>
+#include <X11/Xproto.h>
+#include <X11/Xutil.h>
+#ifdef XINERAMA
+#include <X11/extensions/Xinerama.h>
+#endif /* XINERAMA */
+#include <X11/Xft/Xft.h>
+#include <X11/Xlib-xcb.h>
+#include <xcb/res.h>
+#ifdef __OpenBSD__
+#include <sys/sysctl.h>
+#include <kvm.h>
+#endif /* __OpenBSD */
+
+#include "drw.h"
+#include "util.h"
+
+/* macros */
+#define BUTTONMASK (ButtonPressMask|ButtonReleaseMask)
+#define CLEANMASK(mask) (mask & ~(numlockmask|LockMask) & (ShiftMask|ControlMask|Mod1Mask|Mod2Mask|Mod3Mask|Mod4Mask|Mod5Mask))
+#define INTERSECT(x,y,w,h,m) (MAX(0, MIN((x)+(w),(m)->wx+(m)->ww) - MAX((x),(m)->wx)) \
+ * MAX(0, MIN((y)+(h),(m)->wy+(m)->wh) - MAX((y),(m)->wy)))
+#define ISVISIBLE(C) ((C->tags & C->mon->tagset[C->mon->seltags]))
+#define LENGTH(X) (sizeof X / sizeof X[0])
+#define MOUSEMASK (BUTTONMASK|PointerMotionMask)
+#define WIDTH(X) ((X)->w + 2 * (X)->bw)
+#define HEIGHT(X) ((X)->h + 2 * (X)->bw)
+#define TAGMASK ((1 << LENGTH(tags)) - 1)
+#define TEXTW(X) (drw_fontset_getwidth(drw, (X)) + lrpad)
+
+#define SYSTEM_TRAY_REQUEST_DOCK 0
+/* XEMBED messages */
+#define XEMBED_EMBEDDED_NOTIFY 0
+#define XEMBED_WINDOW_ACTIVATE 1
+#define XEMBED_FOCUS_IN 4
+#define XEMBED_MODALITY_ON 10
+#define XEMBED_MAPPED (1 << 0)
+#define XEMBED_WINDOW_ACTIVATE 1
+#define XEMBED_WINDOW_DEACTIVATE 2
+#define VERSION_MAJOR 0
+#define VERSION_MINOR 0
+#define XEMBED_EMBEDDED_VERSION (VERSION_MAJOR << 16) | VERSION_MINOR
+
+/* enums */
+enum { CurNormal, CurResize, CurMove, CurLast }; /* cursor */
+enum { SchemeNorm, SchemeSel, SchemeStatus, SchemeTagsSel, SchemeTagsNorm, SchemeInfoSel, SchemeInfoNorm }; /* color schemes */
+enum { NetSupported, NetWMName, NetWMState, NetWMCheck,
+ NetSystemTray, NetSystemTrayOP, NetSystemTrayOrientation, NetSystemTrayOrientationHorz,
+ NetWMFullscreen, NetActiveWindow, NetWMWindowType,
+ NetWMWindowTypeDialog, NetClientList, NetLast }; /* EWMH atoms */
+enum { Manager, Xembed, XembedInfo, XLast }; /* Xembed atoms */
+enum { WMProtocols, WMDelete, WMState, WMTakeFocus, WMLast }; /* default atoms */
+enum { ClkTagBar, ClkLtSymbol, ClkStatusText, ClkWinTitle,
+ ClkClientWin, ClkRootWin, ClkLast }; /* clicks */
+
+typedef union {
+ int i;
+ unsigned int ui;
+ float f;
+ const void *v;
+} Arg;
+
+typedef struct {
+ unsigned int click;
+ unsigned int mask;
+ unsigned int button;
+ void (*func)(const Arg *arg);
+ const Arg arg;
+} Button;
+
+typedef struct Monitor Monitor;
+typedef struct Client Client;
+struct Client {
+ char name[256];
+ float mina, maxa;
+ int x, y, w, h;
+ int oldx, oldy, oldw, oldh;
+ int basew, baseh, incw, inch, maxw, maxh, minw, minh, hintsvalid;
+ int bw, oldbw;
+ unsigned int tags;
+ int isfixed, isfloating, isurgent, neverfocus, oldstate, isfullscreen, isterminal, noswallow;
+ pid_t pid;
+ Client *next;
+ Client *snext;
+ Client *swallowing;
+ Monitor *mon;
+ Window win;
+};
+
+typedef struct {
+ unsigned int mod;
+ KeySym keysym;
+ void (*func)(const Arg *);
+ const Arg arg;
+} Key;
+
+typedef struct {
+ const char *symbol;
+ void (*arrange)(Monitor *);
+} Layout;
+
+struct Monitor {
+ char ltsymbol[16];
+ float mfact;
+ int nmaster;
+ int num;
+ int by; /* bar geometry */
+ int mx, my, mw, mh; /* screen size */
+ int wx, wy, ww, wh; /* window area */
+ int gappx; /* gaps between windows */
+ unsigned int seltags;
+ unsigned int sellt;
+ unsigned int tagset[2];
+ int showbar;
+ int topbar;
+ Client *clients;
+ Client *sel;
+ Client *stack;
+ Monitor *next;
+ Window barwin;
+ const Layout *lt[2];
+};
+
+typedef struct {
+ const char *class;
+ const char *instance;
+ const char *title;
+ unsigned int tags;
+ int isfloating;
+ int isterminal;
+ int noswallow;
+ int monitor;
+} Rule;
+
+typedef struct Systray Systray;
+struct Systray {
+ Window win;
+ Client *icons;
+};
+
+/* function declarations */
+static void applyrules(Client *c);
+static int applysizehints(Client *c, int *x, int *y, int *w, int *h, int interact);
+static void arrange(Monitor *m);
+static void arrangemon(Monitor *m);
+static void attach(Client *c);
+static void attachstack(Client *c);
+static void buttonpress(XEvent *e);
+static void checkotherwm(void);
+static void cleanup(void);
+static void cleanupmon(Monitor *mon);
+static void clientmessage(XEvent *e);
+static void configure(Client *c);
+static void configurenotify(XEvent *e);
+static void configurerequest(XEvent *e);
+static Monitor *createmon(void);
+static void destroynotify(XEvent *e);
+static void detach(Client *c);
+static void detachstack(Client *c);
+static Monitor *dirtomon(int dir);
+static void drawbar(Monitor *m);
+static void drawbars(void);
+static void enternotify(XEvent *e);
+static void expose(XEvent *e);
+static void focus(Client *c);
+static void focusin(XEvent *e);
+static void focusmon(const Arg *arg);
+static void focusstack(const Arg *arg);
+static Atom getatomprop(Client *c, Atom prop);
+static int getrootptr(int *x, int *y);
+static long getstate(Window w);
+static unsigned int getsystraywidth();
+static int gettextprop(Window w, Atom atom, char *text, unsigned int size);
+static void grabbuttons(Client *c, int focused);
+static void grabkeys(void);
+static void incnmaster(const Arg *arg);
+static void keypress(XEvent *e);
+static void killclient(const Arg *arg);
+static void manage(Window w, XWindowAttributes *wa);
+static void mappingnotify(XEvent *e);
+static void maprequest(XEvent *e);
+static void monocle(Monitor *m);
+static void motionnotify(XEvent *e);
+static void movemouse(const Arg *arg);
+static Client *nexttiled(Client *c);
+static void pop(Client *c);
+static void propertynotify(XEvent *e);
+static void quit(const Arg *arg);
+static Monitor *recttomon(int x, int y, int w, int h);
+static void removesystrayicon(Client *i);
+static void resize(Client *c, int x, int y, int w, int h, int interact);
+static void resizebarwin(Monitor *m);
+static void resizeclient(Client *c, int x, int y, int w, int h);
+static void resizemouse(const Arg *arg);
+static void resizerequest(XEvent *e);
+static void restack(Monitor *m);
+static void run(void);
+static void runAutostart(void);
+static void scan(void);
+static int sendevent(Window w, Atom proto, int m, long d0, long d1, long d2, long d3, long d4);
+static void sendmon(Client *c, Monitor *m);
+static void setclientstate(Client *c, long state);
+static void setfocus(Client *c);
+static void setfullscreen(Client *c, int fullscreen);
+static void setgaps(const Arg *arg);
+static void setlayout(const Arg *arg);
+static void setmfact(const Arg *arg);
+static void setup(void);
+static void seturgent(Client *c, int urg);
+static void showhide(Client *c);
+static void spawn(const Arg *arg);
+static Monitor *systraytomon(Monitor *m);
+static void tag(const Arg *arg);
+static void tagmon(const Arg *arg);
+static void tile(Monitor *m);
+static void togglebar(const Arg *arg);
+static void togglefloating(const Arg *arg);
+static void toggletag(const Arg *arg);
+static void toggleview(const Arg *arg);
+static void unfocus(Client *c, int setfocus);
+static void unmanage(Client *c, int destroyed);
+static void unmapnotify(XEvent *e);
+static void updatebarpos(Monitor *m);
+static void updatebars(void);
+static void updateclientlist(void);
+static int updategeom(void);
+static void updatenumlockmask(void);
+static void updatesizehints(Client *c);
+static void updatestatus(void);
+static void updatesystray(void);
+static void updatesystrayicongeom(Client *i, int w, int h);
+static void updatesystrayiconstate(Client *i, XPropertyEvent *ev);
+static void updatetitle(Client *c);
+static void updatewindowtype(Client *c);
+static void updatewmhints(Client *c);
+static void view(const Arg *arg);
+static Client *wintoclient(Window w);
+static Monitor *wintomon(Window w);
+static Client *wintosystrayicon(Window w);
+static int xerror(Display *dpy, XErrorEvent *ee);
+static int xerrordummy(Display *dpy, XErrorEvent *ee);
+static int xerrorstart(Display *dpy, XErrorEvent *ee);
+static void zoom(const Arg *arg);
+
+static pid_t getparentprocess(pid_t p);
+static int isdescprocess(pid_t p, pid_t c);
+static Client *swallowingclient(Window w);
+static Client *termforwin(const Client *c);
+static pid_t winpid(Window w);
+
+/* variables */
+static Systray *systray = NULL;
+static const char broken[] = "broken";
+static char stext[256];
+static int screen;
+static int sw, sh; /* X display screen geometry width, height */
+static int bh; /* bar height */
+static int lrpad; /* sum of left and right padding for text */
+static int (*xerrorxlib)(Display *, XErrorEvent *);
+static unsigned int numlockmask = 0;
+static void (*handler[LASTEvent]) (XEvent *) = {
+ [ButtonPress] = buttonpress,
+ [ClientMessage] = clientmessage,
+ [ConfigureRequest] = configurerequest,
+ [ConfigureNotify] = configurenotify,
+ [DestroyNotify] = destroynotify,
+ [EnterNotify] = enternotify,
+ [Expose] = expose,
+ [FocusIn] = focusin,
+ [KeyPress] = keypress,
+ [MappingNotify] = mappingnotify,
+ [MapRequest] = maprequest,
+ [MotionNotify] = motionnotify,
+ [PropertyNotify] = propertynotify,
+ [ResizeRequest] = resizerequest,
+ [UnmapNotify] = unmapnotify
+};
+static Atom wmatom[WMLast], netatom[NetLast], xatom[XLast];
+static int running = 1;
+static Cur *cursor[CurLast];
+static Clr **scheme;
+static Display *dpy;
+static Drw *drw;
+static Monitor *mons, *selmon;
+static Window root, wmcheckwin;
+
+static xcb_connection_t *xcon;
+
+/* configuration, allows nested code to access above variables */
+#include "config.h"
+
+/* compile-time check if all tags fit into an unsigned int bit array. */
+struct NumTags { char limitexceeded[LENGTH(tags) > 31 ? -1 : 1]; };
+
+/* function implementations */
+void
+applyrules(Client *c)
+{
+ const char *class, *instance;
+ unsigned int i;
+ const Rule *r;
+ Monitor *m;
+ XClassHint ch = { NULL, NULL };
+
+ /* rule matching */
+ c->isfloating = 0;
+ c->tags = 0;
+ XGetClassHint(dpy, c->win, &ch);
+ class = ch.res_class ? ch.res_class : broken;
+ instance = ch.res_name ? ch.res_name : broken;
+
+ for (i = 0; i < LENGTH(rules); i++) {
+ r = &rules[i];
+ if ((!r->title || strstr(c->name, r->title))
+ && (!r->class || strstr(class, r->class))
+ && (!r->instance || strstr(instance, r->instance)))
+ {
+ c->isterminal = r->isterminal;
+ c->noswallow = r->noswallow;
+ c->isfloating = r->isfloating;
+ c->tags |= r->tags;
+ for (m = mons; m && m->num != r->monitor; m = m->next);
+ if (m)
+ c->mon = m;
+ }
+ }
+ if (ch.res_class)
+ XFree(ch.res_class);
+ if (ch.res_name)
+ XFree(ch.res_name);
+ c->tags = c->tags & TAGMASK ? c->tags & TAGMASK : c->mon->tagset[c->mon->seltags];
+}
+
+int
+applysizehints(Client *c, int *x, int *y, int *w, int *h, int interact)
+{
+ int baseismin;
+ Monitor *m = c->mon;
+
+ /* set minimum possible */
+ *w = MAX(1, *w);
+ *h = MAX(1, *h);
+ if (interact) {
+ if (*x > sw)
+ *x = sw - WIDTH(c);
+ if (*y > sh)
+ *y = sh - HEIGHT(c);
+ if (*x + *w + 2 * c->bw < 0)
+ *x = 0;
+ if (*y + *h + 2 * c->bw < 0)
+ *y = 0;
+ } else {
+ if (*x >= m->wx + m->ww)
+ *x = m->wx + m->ww - WIDTH(c);
+ if (*y >= m->wy + m->wh)
+ *y = m->wy + m->wh - HEIGHT(c);
+ if (*x + *w + 2 * c->bw <= m->wx)
+ *x = m->wx;
+ if (*y + *h + 2 * c->bw <= m->wy)
+ *y = m->wy;
+ }
+ if (*h < bh)
+ *h = bh;
+ if (*w < bh)
+ *w = bh;
+ if (resizehints || c->isfloating || !c->mon->lt[c->mon->sellt]->arrange) {
+ if (!c->hintsvalid)
+ updatesizehints(c);
+ /* see last two sentences in ICCCM 4.1.2.3 */
+ baseismin = c->basew == c->minw && c->baseh == c->minh;
+ if (!baseismin) { /* temporarily remove base dimensions */
+ *w -= c->basew;
+ *h -= c->baseh;
+ }
+ /* adjust for aspect limits */
+ if (c->mina > 0 && c->maxa > 0) {
+ if (c->maxa < (float)*w / *h)
+ *w = *h * c->maxa + 0.5;
+ else if (c->mina < (float)*h / *w)
+ *h = *w * c->mina + 0.5;
+ }
+ if (baseismin) { /* increment calculation requires this */
+ *w -= c->basew;
+ *h -= c->baseh;
+ }
+ /* adjust for increment value */
+ if (c->incw)
+ *w -= *w % c->incw;
+ if (c->inch)
+ *h -= *h % c->inch;
+ /* restore base dimensions */
+ *w = MAX(*w + c->basew, c->minw);
+ *h = MAX(*h + c->baseh, c->minh);
+ if (c->maxw)
+ *w = MIN(*w, c->maxw);
+ if (c->maxh)
+ *h = MIN(*h, c->maxh);
+ }
+ return *x != c->x || *y != c->y || *w != c->w || *h != c->h;
+}
+
+void
+arrange(Monitor *m)
+{
+ if (m)
+ showhide(m->stack);
+ else for (m = mons; m; m = m->next)
+ showhide(m->stack);
+ if (m) {
+ arrangemon(m);
+ restack(m);
+ } else for (m = mons; m; m = m->next)
+ arrangemon(m);
+}
+
+void
+arrangemon(Monitor *m)
+{
+ strncpy(m->ltsymbol, m->lt[m->sellt]->symbol, sizeof m->ltsymbol);
+ if (m->lt[m->sellt]->arrange)
+ m->lt[m->sellt]->arrange(m);
+}
+
+void
+attach(Client *c)
+{
+ c->next = c->mon->clients;
+ c->mon->clients = c;
+}
+
+void
+attachstack(Client *c)
+{
+ c->snext = c->mon->stack;
+ c->mon->stack = c;
+}
+
+void
+swallow(Client *p, Client *c)
+{
+
+ if (c->noswallow || c->isterminal)
+ return;
+ if (c->noswallow && !swallowfloating && c->isfloating)
+ return;
+
+ detach(c);
+ detachstack(c);
+
+ setclientstate(c, WithdrawnState);
+ XUnmapWindow(dpy, p->win);
+
+ p->swallowing = c;
+ c->mon = p->mon;
+
+ Window w = p->win;
+ p->win = c->win;
+ c->win = w;
+ updatetitle(p);
+ XMoveResizeWindow(dpy, p->win, p->x, p->y, p->w, p->h);
+ arrange(p->mon);
+ configure(p);
+ updateclientlist();
+}
+
+void
+unswallow(Client *c)
+{
+ c->win = c->swallowing->win;
+
+ free(c->swallowing);
+ c->swallowing = NULL;
+
+ /* unfullscreen the client */
+ setfullscreen(c, 0);
+ updatetitle(c);
+ arrange(c->mon);
+ XMapWindow(dpy, c->win);
+ XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
+ setclientstate(c, NormalState);
+ focus(NULL);
+ arrange(c->mon);
+}
+
+void
+buttonpress(XEvent *e)
+{
+ unsigned int i, x, click;
+ Arg arg = {0};
+ Client *c;
+ Monitor *m;
+ XButtonPressedEvent *ev = &e->xbutton;
+
+ click = ClkRootWin;
+ /* focus monitor if necessary */
+ if ((m = wintomon(ev->window)) && m != selmon) {
+ unfocus(selmon->sel, 1);
+ selmon = m;
+ focus(NULL);
+ }
+ if (ev->window == selmon->barwin) {
+ i = x = 0;
+ do
+ x += TEXTW(tags[i]);
+ while (ev->x >= x && ++i < LENGTH(tags));
+ if (i < LENGTH(tags)) {
+ click = ClkTagBar;
+ arg.ui = 1 << i;
+ } else if (ev->x < x + TEXTW(selmon->ltsymbol))
+ click = ClkLtSymbol;
+ else if (ev->x > selmon->ww - (int)TEXTW(stext) - getsystraywidth())
+ click = ClkStatusText;
+ else
+ click = ClkWinTitle;
+ } else if ((c = wintoclient(ev->window))) {
+ focus(c);
+ restack(selmon);
+ XAllowEvents(dpy, ReplayPointer, CurrentTime);
+ click = ClkClientWin;
+ }
+ for (i = 0; i < LENGTH(buttons); i++)
+ if (click == buttons[i].click && buttons[i].func && buttons[i].button == ev->button
+ && CLEANMASK(buttons[i].mask) == CLEANMASK(ev->state))
+ buttons[i].func(click == ClkTagBar && buttons[i].arg.i == 0 ? &arg : &buttons[i].arg);
+}
+
+void
+checkotherwm(void)
+{
+ xerrorxlib = XSetErrorHandler(xerrorstart);
+ /* this causes an error if some other window manager is running */
+ XSelectInput(dpy, DefaultRootWindow(dpy), SubstructureRedirectMask);
+ XSync(dpy, False);
+ XSetErrorHandler(xerror);
+ XSync(dpy, False);
+}
+
+void
+cleanup(void)
+{
+ Arg a = {.ui = ~0};
+ Layout foo = { "", NULL };
+ Monitor *m;
+ size_t i;
+
+ view(&a);
+ selmon->lt[selmon->sellt] = &foo;
+ for (m = mons; m; m = m->next)
+ while (m->stack)
+ unmanage(m->stack, 0);
+ XUngrabKey(dpy, AnyKey, AnyModifier, root);
+ while (mons)
+ cleanupmon(mons);
+
+ if (showsystray) {
+ XUnmapWindow(dpy, systray->win);
+ XDestroyWindow(dpy, systray->win);
+ free(systray);
+ }
+
+ for (i = 0; i < CurLast; i++)
+ drw_cur_free(drw, cursor[i]);
+ for (i = 0; i < LENGTH(colors); i++)
+ free(scheme[i]);
+ free(scheme);
+ XDestroyWindow(dpy, wmcheckwin);
+ drw_free(drw);
+ XSync(dpy, False);
+ XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
+ XDeleteProperty(dpy, root, netatom[NetActiveWindow]);
+}
+
+void
+cleanupmon(Monitor *mon)
+{
+ Monitor *m;
+
+ if (mon == mons)
+ mons = mons->next;
+ else {
+ for (m = mons; m && m->next != mon; m = m->next);
+ m->next = mon->next;
+ }
+ XUnmapWindow(dpy, mon->barwin);
+ XDestroyWindow(dpy, mon->barwin);
+ free(mon);
+}
+
+void
+clientmessage(XEvent *e)
+{
+ XWindowAttributes wa;
+ XSetWindowAttributes swa;
+ XClientMessageEvent *cme = &e->xclient;
+ Client *c = wintoclient(cme->window);
+
+ if (showsystray && cme->window == systray->win && cme->message_type == netatom[NetSystemTrayOP]) {
+ /* add systray icons */
+ if (cme->data.l[1] == SYSTEM_TRAY_REQUEST_DOCK) {
+ if (!(c = (Client *)calloc(1, sizeof(Client))))
+ die("fatal: could not malloc() %u bytes\n", sizeof(Client));
+ if (!(c->win = cme->data.l[2])) {
+ free(c);
+ return;
+ }
+ c->mon = selmon;
+ c->next = systray->icons;
+ systray->icons = c;
+ if (!XGetWindowAttributes(dpy, c->win, &wa)) {
+ /* use sane defaults */
+ wa.width = bh;
+ wa.height = bh;
+ wa.border_width = 0;
+ }
+ c->x = c->oldx = c->y = c->oldy = 0;
+ c->w = c->oldw = wa.width;
+ c->h = c->oldh = wa.height;
+ c->oldbw = wa.border_width;
+ c->bw = 0;
+ c->isfloating = True;
+ /* reuse tags field as mapped status */
+ c->tags = 1;
+ updatesizehints(c);
+ updatesystrayicongeom(c, wa.width, wa.height);
+ XAddToSaveSet(dpy, c->win);
+ XSelectInput(dpy, c->win, StructureNotifyMask | PropertyChangeMask | ResizeRedirectMask);
+ XReparentWindow(dpy, c->win, systray->win, 0, 0);
+ /* use parents background color */
+ swa.background_pixel = scheme[SchemeNorm][ColBg].pixel;
+ XChangeWindowAttributes(dpy, c->win, CWBackPixel, &swa);
+ sendevent(c->win, netatom[Xembed], StructureNotifyMask, CurrentTime, XEMBED_EMBEDDED_NOTIFY, 0 , systray->win, XEMBED_EMBEDDED_VERSION);
+ /* FIXME not sure if I have to send these events, too */
+ sendevent(c->win, netatom[Xembed], StructureNotifyMask, CurrentTime, XEMBED_FOCUS_IN, 0 , systray->win, XEMBED_EMBEDDED_VERSION);
+ sendevent(c->win, netatom[Xembed], StructureNotifyMask, CurrentTime, XEMBED_WINDOW_ACTIVATE, 0 , systray->win, XEMBED_EMBEDDED_VERSION);
+ sendevent(c->win, netatom[Xembed], StructureNotifyMask, CurrentTime, XEMBED_MODALITY_ON, 0 , systray->win, XEMBED_EMBEDDED_VERSION);
+ XSync(dpy, False);
+ resizebarwin(selmon);
+ updatesystray();
+ setclientstate(c, NormalState);
+ }
+ return;
+ }
+
+ if (!c)
+ return;
+ if (cme->message_type == netatom[NetWMState]) {
+ if (cme->data.l[1] == netatom[NetWMFullscreen]
+ || cme->data.l[2] == netatom[NetWMFullscreen])
+ setfullscreen(c, (cme->data.l[0] == 1 /* _NET_WM_STATE_ADD */
+ || (cme->data.l[0] == 2 /* _NET_WM_STATE_TOGGLE */ && !c->isfullscreen)));
+ } else if (cme->message_type == netatom[NetActiveWindow]) {
+ if (c != selmon->sel && !c->isurgent)
+ seturgent(c, 1);
+ }
+}
+
+void
+configure(Client *c)
+{
+ XConfigureEvent ce;
+
+ ce.type = ConfigureNotify;
+ ce.display = dpy;
+ ce.event = c->win;
+ ce.window = c->win;
+ ce.x = c->x;
+ ce.y = c->y;
+ ce.width = c->w;
+ ce.height = c->h;
+ ce.border_width = c->bw;
+ ce.above = None;
+ ce.override_redirect = False;
+ XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&ce);
+}
+
+void
+configurenotify(XEvent *e)
+{
+ Monitor *m;
+ Client *c;
+ XConfigureEvent *ev = &e->xconfigure;
+ int dirty;
+
+ /* TODO: updategeom handling sucks, needs to be simplified */
+ if (ev->window == root) {
+ dirty = (sw != ev->width || sh != ev->height);
+ sw = ev->width;
+ sh = ev->height;
+ if (updategeom() || dirty) {
+ drw_resize(drw, sw, bh);
+ updatebars();
+ for (m = mons; m; m = m->next) {
+ for (c = m->clients; c; c = c->next)
+ if (c->isfullscreen)
+ resizeclient(c, m->mx, m->my, m->mw, m->mh);
+ resizebarwin(m);
+ }
+ focus(NULL);
+ arrange(NULL);
+ }
+ }
+}
+
+void
+configurerequest(XEvent *e)
+{
+ Client *c;
+ Monitor *m;
+ XConfigureRequestEvent *ev = &e->xconfigurerequest;
+ XWindowChanges wc;
+
+ if ((c = wintoclient(ev->window))) {
+ if (ev->value_mask & CWBorderWidth)
+ c->bw = ev->border_width;
+ else if (c->isfloating || !selmon->lt[selmon->sellt]->arrange) {
+ m = c->mon;
+ if (ev->value_mask & CWX) {
+ c->oldx = c->x;
+ c->x = m->mx + ev->x;
+ }
+ if (ev->value_mask & CWY) {
+ c->oldy = c->y;
+ c->y = m->my + ev->y;
+ }
+ if (ev->value_mask & CWWidth) {
+ c->oldw = c->w;
+ c->w = ev->width;
+ }
+ if (ev->value_mask & CWHeight) {
+ c->oldh = c->h;
+ c->h = ev->height;
+ }
+ if ((c->x + c->w) > m->mx + m->mw && c->isfloating)
+ c->x = m->mx + (m->mw / 2 - WIDTH(c) / 2); /* center in x direction */
+ if ((c->y + c->h) > m->my + m->mh && c->isfloating)
+ c->y = m->my + (m->mh / 2 - HEIGHT(c) / 2); /* center in y direction */
+ if ((ev->value_mask & (CWX|CWY)) && !(ev->value_mask & (CWWidth|CWHeight)))
+ configure(c);
+ if (ISVISIBLE(c))
+ XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
+ } else
+ configure(c);
+ } else {
+ wc.x = ev->x;
+ wc.y = ev->y;
+ wc.width = ev->width;
+ wc.height = ev->height;
+ wc.border_width = ev->border_width;
+ wc.sibling = ev->above;
+ wc.stack_mode = ev->detail;
+ XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
+ }
+ XSync(dpy, False);
+}
+
+Monitor *
+createmon(void)
+{
+ Monitor *m;
+
+ m = ecalloc(1, sizeof(Monitor));
+ m->tagset[0] = m->tagset[1] = 1;
+ m->mfact = mfact;
+ m->nmaster = nmaster;
+ m->showbar = showbar;
+ m->topbar = topbar;
+ m->gappx = gappx;
+ m->lt[0] = &layouts[0];
+ m->lt[1] = &layouts[1 % LENGTH(layouts)];
+ strncpy(m->ltsymbol, layouts[0].symbol, sizeof m->ltsymbol);
+ return m;
+}
+
+void
+destroynotify(XEvent *e)
+{
+ Client *c;
+ XDestroyWindowEvent *ev = &e->xdestroywindow;
+
+ if ((c = wintoclient(ev->window)))
+ unmanage(c, 1);
+ else if ((c = wintosystrayicon(ev->window))) {
+ removesystrayicon(c);
+ resizebarwin(selmon);
+ updatesystray();
+ }
+
+ else if ((c = swallowingclient(ev->window)))
+ unmanage(c->swallowing, 1);
+}
+
+void
+detach(Client *c)
+{
+ Client **tc;
+
+ for (tc = &c->mon->clients; *tc && *tc != c; tc = &(*tc)->next);
+ *tc = c->next;
+}
+
+void
+detachstack(Client *c)
+{
+ Client **tc, *t;
+
+ for (tc = &c->mon->stack; *tc && *tc != c; tc = &(*tc)->snext);
+ *tc = c->snext;
+
+ if (c == c->mon->sel) {
+ for (t = c->mon->stack; t && !ISVISIBLE(t); t = t->snext);
+ c->mon->sel = t;
+ }
+}
+
+Monitor *
+dirtomon(int dir)
+{
+ Monitor *m = NULL;
+
+ if (dir > 0) {
+ if (!(m = selmon->next))
+ m = mons;
+ } else if (selmon == mons)
+ for (m = mons; m->next; m = m->next);
+ else
+ for (m = mons; m->next != selmon; m = m->next);
+ return m;
+}
+
+void
+drawbar(Monitor *m)
+{
+ int x, w, tw = 0, stw = 0;
+ int boxs = drw->fonts->h / 9;
+ int boxw = drw->fonts->h / 6 + 2;
+ unsigned int i, occ = 0, urg = 0;
+ Client *c;
+
+ if (!m->showbar)
+ return;
+
+ if(showsystray && m == systraytomon(m) && !systrayonleft)
+ stw = getsystraywidth();
+
+ /* draw status first so it can be overdrawn by tags later */
+ if (m == selmon) { /* status is only drawn on selected monitor */
+ drw_setscheme(drw, scheme[SchemeStatus]);
+ tw = TEXTW(stext) - lrpad / 2 + 2; /* 2px extra right padding */
+ drw_text(drw, m->ww - tw - stw, 0, tw, bh, lrpad / 2 - 2, stext, 0);
+ }
+
+ resizebarwin(m);
+ for (c = m->clients; c; c = c->next) {
+ occ |= c->tags;
+ if (c->isurgent)
+ urg |= c->tags;
+ }
+ x = 0;
+ for (i = 0; i < LENGTH(tags); i++) {
+ w = TEXTW(tags[i]);
+ drw_setscheme(drw, scheme[m->tagset[m->seltags] & 1 << i ? SchemeTagsSel : SchemeTagsNorm]);
+ drw_text(drw, x, 0, w, bh, lrpad / 2, tags[i], urg & 1 << i);
+ if (occ & 1 << i)
+ drw_rect(drw, x + boxs, boxs, boxw, boxw,
+ m == selmon && selmon->sel && selmon->sel->tags & 1 << i,
+ urg & 1 << i);
+ x += w;
+ }
+ w = TEXTW(m->ltsymbol);
+ drw_setscheme(drw, scheme[SchemeTagsNorm]);
+ x = drw_text(drw, x, 0, w, bh, lrpad / 2, m->ltsymbol, 0);
+
+ if ((w = m->ww - tw - stw - x) > bh) {
+ if (m->sel) {
+ drw_setscheme(drw, scheme[m == selmon ? SchemeInfoSel : SchemeInfoNorm]);
+ drw_text(drw, x, 0, w, bh, lrpad / 2, m->sel->name, 0);
+ if (m->sel->isfloating)
+ drw_rect(drw, x + boxs, boxs, boxw, boxw, m->sel->isfixed, 0);
+ } else {
+ drw_setscheme(drw, scheme[SchemeInfoNorm]);
+ drw_rect(drw, x, 0, w, bh, 1, 1);
+ }
+ }
+ drw_map(drw, m->barwin, 0, 0, m->ww - stw, bh);
+}
+
+void
+drawbars(void)
+{
+ Monitor *m;
+
+ for (m = mons; m; m = m->next)
+ drawbar(m);
+}
+
+void
+enternotify(XEvent *e)
+{
+ Client *c;
+ Monitor *m;
+ XCrossingEvent *ev = &e->xcrossing;
+
+ if ((ev->mode != NotifyNormal || ev->detail == NotifyInferior) && ev->window != root)
+ return;
+ c = wintoclient(ev->window);
+ m = c ? c->mon : wintomon(ev->window);
+ if (m != selmon) {
+ unfocus(selmon->sel, 1);
+ selmon = m;
+ } else if (!c || c == selmon->sel)
+ return;
+ focus(c);
+}
+
+void
+expose(XEvent *e)
+{
+ Monitor *m;
+ XExposeEvent *ev = &e->xexpose;
+
+ if (ev->count == 0 && (m = wintomon(ev->window))) {
+ drawbar(m);
+ if (m == selmon)
+ updatesystray();
+ }
+}
+
+void
+focus(Client *c)
+{
+ if (!c || !ISVISIBLE(c))
+ for (c = selmon->stack; c && !ISVISIBLE(c); c = c->snext);
+ if (selmon->sel && selmon->sel != c)
+ unfocus(selmon->sel, 0);
+ if (c) {
+ if (c->mon != selmon)
+ selmon = c->mon;
+ if (c->isurgent)
+ seturgent(c, 0);
+ detachstack(c);
+ attachstack(c);
+ grabbuttons(c, 1);
+ XSetWindowBorder(dpy, c->win, scheme[SchemeSel][ColBorder].pixel);
+ setfocus(c);
+ } else {
+ XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
+ XDeleteProperty(dpy, root, netatom[NetActiveWindow]);
+ }
+ selmon->sel = c;
+ drawbars();
+}
+
+/* there are some broken focus acquiring clients needing extra handling */
+void
+focusin(XEvent *e)
+{
+ XFocusChangeEvent *ev = &e->xfocus;
+
+ if (selmon->sel && ev->window != selmon->sel->win)
+ setfocus(selmon->sel);
+}
+
+void
+focusmon(const Arg *arg)
+{
+ Monitor *m;
+
+ if (!mons->next)
+ return;
+ if ((m = dirtomon(arg->i)) == selmon)
+ return;
+ unfocus(selmon->sel, 0);
+ selmon = m;
+ focus(NULL);
+ if (selmon->sel)
+ XWarpPointer(dpy, None, selmon->sel->win, 0, 0, 0, 0, selmon->sel->w/2, selmon->sel->h/2);
+}
+
+void
+focusstack(const Arg *arg)
+{
+ Client *c = NULL, *i;
+
+ if (!selmon->sel || (selmon->sel->isfullscreen && lockfullscreen))
+ return;
+ if (arg->i > 0) {
+ for (c = selmon->sel->next; c && !ISVISIBLE(c); c = c->next);
+ if (!c)
+ for (c = selmon->clients; c && !ISVISIBLE(c); c = c->next);
+ } else {
+ for (i = selmon->clients; i != selmon->sel; i = i->next)
+ if (ISVISIBLE(i))
+ c = i;
+ if (!c)
+ for (; i; i = i->next)
+ if (ISVISIBLE(i))
+ c = i;
+ }
+ if (c) {
+ focus(c);
+ restack(selmon);
+ }
+}
+
+Atom
+getatomprop(Client *c, Atom prop)
+{
+ int di;
+ unsigned long dl;
+ unsigned char *p = NULL;
+ Atom da, atom = None;
+
+ /* FIXME getatomprop should return the number of items and a pointer to
+ * the stored data instead of this workaround */
+ Atom req = XA_ATOM;
+ if (prop == xatom[XembedInfo])
+ req = xatom[XembedInfo];
+
+ if (XGetWindowProperty(dpy, c->win, prop, 0L, sizeof atom, False, req,
+ &da, &di, &dl, &dl, &p) == Success && p) {
+ atom = *(Atom *)p;
+ if (da == xatom[XembedInfo] && dl == 2)
+ atom = ((Atom *)p)[1];
+ XFree(p);
+ }
+ return atom;
+}
+
+unsigned int
+getsystraywidth()
+{
+ unsigned int w = 0;
+ Client *i;
+ if(showsystray)
+ for(i = systray->icons; i; w += i->w + systrayspacing, i = i->next) ;
+ return w ? w + systrayspacing : 1;
+}
+
+int
+getrootptr(int *x, int *y)
+{
+ int di;
+ unsigned int dui;
+ Window dummy;
+
+ return XQueryPointer(dpy, root, &dummy, &dummy, x, y, &di, &di, &dui);
+}
+
+long
+getstate(Window w)
+{
+ int format;
+ long result = -1;
+ unsigned char *p = NULL;
+ unsigned long n, extra;
+ Atom real;
+
+ if (XGetWindowProperty(dpy, w, wmatom[WMState], 0L, 2L, False, wmatom[WMState],
+ &real, &format, &n, &extra, (unsigned char **)&p) != Success)
+ return -1;
+ if (n != 0)
+ result = *p;
+ XFree(p);
+ return result;
+}
+
+int
+gettextprop(Window w, Atom atom, char *text, unsigned int size)
+{
+ char **list = NULL;
+ int n;
+ XTextProperty name;
+
+ if (!text || size == 0)
+ return 0;
+ text[0] = '\0';
+ if (!XGetTextProperty(dpy, w, &name, atom) || !name.nitems)
+ return 0;
+ if (name.encoding == XA_STRING) {
+ strncpy(text, (char *)name.value, size - 1);
+ } else if (XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success && n > 0 && *list) {
+ strncpy(text, *list, size - 1);
+ XFreeStringList(list);
+ }
+ text[size - 1] = '\0';
+ XFree(name.value);
+ return 1;
+}
+
+void
+grabbuttons(Client *c, int focused)
+{
+ updatenumlockmask();
+ {
+ unsigned int i, j;
+ unsigned int modifiers[] = { 0, LockMask, numlockmask, numlockmask|LockMask };
+ XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
+ if (!focused)
+ XGrabButton(dpy, AnyButton, AnyModifier, c->win, False,
+ BUTTONMASK, GrabModeSync, GrabModeSync, None, None);
+ for (i = 0; i < LENGTH(buttons); i++)
+ if (buttons[i].click == ClkClientWin)
+ for (j = 0; j < LENGTH(modifiers); j++)
+ XGrabButton(dpy, buttons[i].button,
+ buttons[i].mask | modifiers[j],
+ c->win, False, BUTTONMASK,
+ GrabModeAsync, GrabModeSync, None, None);
+ }
+}
+
+void
+grabkeys(void)
+{
+ updatenumlockmask();
+ {
+ unsigned int i, j, k;
+ unsigned int modifiers[] = { 0, LockMask, numlockmask, numlockmask|LockMask };
+ int start, end, skip;
+ KeySym *syms;
+
+ XUngrabKey(dpy, AnyKey, AnyModifier, root);
+ XDisplayKeycodes(dpy, &start, &end);
+ syms = XGetKeyboardMapping(dpy, start, end - start + 1, &skip);
+ if (!syms)
+ return;
+ for (k = start; k <= end; k++)
+ for (i = 0; i < LENGTH(keys); i++)
+ /* skip modifier codes, we do that ourselves */
+ if (keys[i].keysym == syms[(k - start) * skip])
+ for (j = 0; j < LENGTH(modifiers); j++)
+ XGrabKey(dpy, k,
+ keys[i].mod | modifiers[j],
+ root, True,
+ GrabModeAsync, GrabModeAsync);
+ XFree(syms);
+ }
+}
+
+void
+incnmaster(const Arg *arg)
+{
+ selmon->nmaster = MAX(selmon->nmaster + arg->i, 0);
+ arrange(selmon);
+}
+
+#ifdef XINERAMA
+static int
+isuniquegeom(XineramaScreenInfo *unique, size_t n, XineramaScreenInfo *info)
+{
+ while (n--)
+ if (unique[n].x_org == info->x_org && unique[n].y_org == info->y_org
+ && unique[n].width == info->width && unique[n].height == info->height)
+ return 0;
+ return 1;
+}
+#endif /* XINERAMA */
+
+void
+keypress(XEvent *e)
+{
+ unsigned int i;
+ KeySym keysym;
+ XKeyEvent *ev;
+
+ ev = &e->xkey;
+ keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
+ for (i = 0; i < LENGTH(keys); i++)
+ if (keysym == keys[i].keysym
+ && CLEANMASK(keys[i].mod) == CLEANMASK(ev->state)
+ && keys[i].func)
+ keys[i].func(&(keys[i].arg));
+}
+
+void
+killclient(const Arg *arg)
+{
+ if (!selmon->sel)
+ return;
+
+ if (!sendevent(selmon->sel->win, wmatom[WMDelete], NoEventMask, wmatom[WMDelete], CurrentTime, 0 , 0, 0)) {
+ XGrabServer(dpy);
+ XSetErrorHandler(xerrordummy);
+ XSetCloseDownMode(dpy, DestroyAll);
+ XKillClient(dpy, selmon->sel->win);
+ XSync(dpy, False);
+ XSetErrorHandler(xerror);
+ XUngrabServer(dpy);
+ }
+}
+
+void
+manage(Window w, XWindowAttributes *wa)
+{
+ Client *c, *t = NULL, *term = NULL;
+ Window trans = None;
+ XWindowChanges wc;
+
+ c = ecalloc(1, sizeof(Client));
+ c->win = w;
+ c->pid = winpid(w);
+ /* geometry */
+ c->x = c->oldx = wa->x;
+ c->y = c->oldy = wa->y;
+ c->w = c->oldw = wa->width;
+ c->h = c->oldh = wa->height;
+ c->oldbw = wa->border_width;
+
+ updatetitle(c);
+ if (XGetTransientForHint(dpy, w, &trans) && (t = wintoclient(trans))) {
+ c->mon = t->mon;
+ c->tags = t->tags;
+ } else {
+ c->mon = selmon;
+ applyrules(c);
+ term = termforwin(c);
+ }
+
+ if (c->x + WIDTH(c) > c->mon->wx + c->mon->ww)
+ c->x = c->mon->wx + c->mon->ww - WIDTH(c);
+ if (c->y + HEIGHT(c) > c->mon->wy + c->mon->wh)
+ c->y = c->mon->wy + c->mon->wh - HEIGHT(c);
+ c->x = MAX(c->x, c->mon->wx);
+ c->y = MAX(c->y, c->mon->wy);
+ c->bw = borderpx;
+
+ wc.border_width = c->bw;
+ XConfigureWindow(dpy, w, CWBorderWidth, &wc);
+ XSetWindowBorder(dpy, w, scheme[SchemeNorm][ColBorder].pixel);
+ configure(c); /* propagates border_width, if size doesn't change */
+ updatewindowtype(c);
+ updatesizehints(c);
+ updatewmhints(c);
+ XSelectInput(dpy, w, EnterWindowMask|FocusChangeMask|PropertyChangeMask|StructureNotifyMask);
+ grabbuttons(c, 0);
+ if (!c->isfloating)
+ c->isfloating = c->oldstate = trans != None || c->isfixed;
+ if (c->isfloating)
+ XRaiseWindow(dpy, c->win);
+ attach(c);
+ attachstack(c);
+ XChangeProperty(dpy, root, netatom[NetClientList], XA_WINDOW, 32, PropModeAppend,
+ (unsigned char *) &(c->win), 1);
+ XMoveResizeWindow(dpy, c->win, c->x + 2 * sw, c->y, c->w, c->h); /* some windows require this */
+ setclientstate(c, NormalState);
+ if (c->mon == selmon)
+ unfocus(selmon->sel, 0);
+ c->mon->sel = c;
+ arrange(c->mon);
+ XMapWindow(dpy, c->win);
+ if (term)
+ swallow(term, c);
+ focus(NULL);
+}
+
+void
+mappingnotify(XEvent *e)
+{
+ XMappingEvent *ev = &e->xmapping;
+
+ XRefreshKeyboardMapping(ev);
+ if (ev->request == MappingKeyboard)
+ grabkeys();
+}
+
+void
+maprequest(XEvent *e)
+{
+ static XWindowAttributes wa;
+ XMapRequestEvent *ev = &e->xmaprequest;
+
+ Client *i;
+ if ((i = wintosystrayicon(ev->window))) {
+ sendevent(i->win, netatom[Xembed], StructureNotifyMask, CurrentTime, XEMBED_WINDOW_ACTIVATE, 0, systray->win, XEMBED_EMBEDDED_VERSION);
+ resizebarwin(selmon);
+ updatesystray();
+ }
+
+ if (!XGetWindowAttributes(dpy, ev->window, &wa) || wa.override_redirect)
+ return;
+ if (!wintoclient(ev->window))
+ manage(ev->window, &wa);
+}
+
+void
+monocle(Monitor *m)
+{
+ unsigned int n = 0;
+ Client *c;
+
+ for (c = m->clients; c; c = c->next)
+ if (ISVISIBLE(c))
+ n++;
+ if (n > 0) /* override layout symbol */
+ snprintf(m->ltsymbol, sizeof m->ltsymbol, "[%d]", n);
+ for (c = nexttiled(m->clients); c; c = nexttiled(c->next))
+ resize(c, m->wx, m->wy, m->ww - 2 * c->bw, m->wh - 2 * c->bw, 0);
+}
+
+void
+motionnotify(XEvent *e)
+{
+ static Monitor *mon = NULL;
+ Monitor *m;
+ XMotionEvent *ev = &e->xmotion;
+
+ if (ev->window != root)
+ return;
+ if ((m = recttomon(ev->x_root, ev->y_root, 1, 1)) != mon && mon) {
+ unfocus(selmon->sel, 1);
+ selmon = m;
+ focus(NULL);
+ }
+ mon = m;
+}
+
+void
+movemouse(const Arg *arg)
+{
+ int x, y, ocx, ocy, nx, ny;
+ Client *c;
+ Monitor *m;
+ XEvent ev;
+ Time lasttime = 0;
+
+ if (!(c = selmon->sel))
+ return;
+ if (c->isfullscreen) /* no support moving fullscreen windows by mouse */
+ return;
+ restack(selmon);
+ ocx = c->x;
+ ocy = c->y;
+ if (XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
+ None, cursor[CurMove]->cursor, CurrentTime) != GrabSuccess)
+ return;
+ if (!getrootptr(&x, &y))
+ return;
+ do {
+ XMaskEvent(dpy, MOUSEMASK|ExposureMask|SubstructureRedirectMask, &ev);
+ switch(ev.type) {
+ case ConfigureRequest:
+ case Expose:
+ case MapRequest:
+ handler[ev.type](&ev);
+ break;
+ case MotionNotify:
+ if ((ev.xmotion.time - lasttime) <= (1000 / 60))
+ continue;
+ lasttime = ev.xmotion.time;
+
+ nx = ocx + (ev.xmotion.x - x);
+ ny = ocy + (ev.xmotion.y - y);
+ if (abs(selmon->wx - nx) < snap)
+ nx = selmon->wx;
+ else if (abs((selmon->wx + selmon->ww) - (nx + WIDTH(c))) < snap)
+ nx = selmon->wx + selmon->ww - WIDTH(c);
+ if (abs(selmon->wy - ny) < snap)
+ ny = selmon->wy;
+ else if (abs((selmon->wy + selmon->wh) - (ny + HEIGHT(c))) < snap)
+ ny = selmon->wy + selmon->wh - HEIGHT(c);
+ if (!c->isfloating && selmon->lt[selmon->sellt]->arrange
+ && (abs(nx - c->x) > snap || abs(ny - c->y) > snap))
+ togglefloating(NULL);
+ if (!selmon->lt[selmon->sellt]->arrange || c->isfloating)
+ resize(c, nx, ny, c->w, c->h, 1);
+ break;
+ }
+ } while (ev.type != ButtonRelease);
+ XUngrabPointer(dpy, CurrentTime);
+ if ((m = recttomon(c->x, c->y, c->w, c->h)) != selmon) {
+ sendmon(c, m);
+ selmon = m;
+ focus(NULL);
+ }
+}
+
+Client *
+nexttiled(Client *c)
+{
+ for (; c && (c->isfloating || !ISVISIBLE(c)); c = c->next);
+ return c;
+}
+
+void
+pop(Client *c)
+{
+ detach(c);
+ attach(c);
+ focus(c);
+ arrange(c->mon);
+}
+
+void
+propertynotify(XEvent *e)
+{
+ Client *c;
+ Window trans;
+ XPropertyEvent *ev = &e->xproperty;
+
+ if ((c = wintosystrayicon(ev->window))) {
+ if (ev->atom == XA_WM_NORMAL_HINTS) {
+ updatesizehints(c);
+ updatesystrayicongeom(c, c->w, c->h);
+ }
+ else
+ updatesystrayiconstate(c, ev);
+ resizebarwin(selmon);
+ updatesystray();
+ }
+
+ if ((ev->window == root) && (ev->atom == XA_WM_NAME))
+ updatestatus();
+ else if (ev->state == PropertyDelete)
+ return; /* ignore */
+ else if ((c = wintoclient(ev->window))) {
+ switch(ev->atom) {
+ default: break;
+ case XA_WM_TRANSIENT_FOR:
+ if (!c->isfloating && (XGetTransientForHint(dpy, c->win, &trans)) &&
+ (c->isfloating = (wintoclient(trans)) != NULL))
+ arrange(c->mon);
+ break;
+ case XA_WM_NORMAL_HINTS:
+ c->hintsvalid = 0;
+ break;
+ case XA_WM_HINTS:
+ updatewmhints(c);
+ drawbars();
+ break;
+ }
+ if (ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
+ updatetitle(c);
+ if (c == c->mon->sel)
+ drawbar(c->mon);
+ }
+ if (ev->atom == netatom[NetWMWindowType])
+ updatewindowtype(c);
+ }
+}
+
+void
+quit(const Arg *arg)
+{
+ running = 0;
+}
+
+Monitor *
+recttomon(int x, int y, int w, int h)
+{
+ Monitor *m, *r = selmon;
+ int a, area = 0;
+
+ for (m = mons; m; m = m->next)
+ if ((a = INTERSECT(x, y, w, h, m)) > area) {
+ area = a;
+ r = m;
+ }
+ return r;
+}
+
+void
+removesystrayicon(Client *i)
+{
+ Client **ii;
+
+ if (!showsystray || !i)
+ return;
+ for (ii = &systray->icons; *ii && *ii != i; ii = &(*ii)->next);
+ if (ii)
+ *ii = i->next;
+ free(i);
+}
+
+void
+resize(Client *c, int x, int y, int w, int h, int interact)
+{
+ if (applysizehints(c, &x, &y, &w, &h, interact))
+ resizeclient(c, x, y, w, h);
+}
+
+void
+resizebarwin(Monitor *m) {
+ unsigned int w = m->ww;
+ if (showsystray && m == systraytomon(m) && !systrayonleft)
+ w -= getsystraywidth();
+ XMoveResizeWindow(dpy, m->barwin, m->wx, m->by, w, bh);
+}
+
+void
+resizeclient(Client *c, int x, int y, int w, int h)
+{
+ XWindowChanges wc;
+
+ c->oldx = c->x; c->x = wc.x = x;
+ c->oldy = c->y; c->y = wc.y = y;
+ c->oldw = c->w; c->w = wc.width = w;
+ c->oldh = c->h; c->h = wc.height = h;
+ wc.border_width = c->bw;
+ XConfigureWindow(dpy, c->win, CWX|CWY|CWWidth|CWHeight|CWBorderWidth, &wc);
+ configure(c);
+ XSync(dpy, False);
+}
+
+void
+resizerequest(XEvent *e)
+{
+ XResizeRequestEvent *ev = &e->xresizerequest;
+ Client *i;
+
+ if ((i = wintosystrayicon(ev->window))) {
+ updatesystrayicongeom(i, ev->width, ev->height);
+ resizebarwin(selmon);
+ updatesystray();
+ }
+}
+
+void
+resizemouse(const Arg *arg)
+{
+ int ocx, ocy, nw, nh;
+ Client *c;
+ Monitor *m;
+ XEvent ev;
+ Time lasttime = 0;
+
+ if (!(c = selmon->sel))
+ return;
+ if (c->isfullscreen) /* no support resizing fullscreen windows by mouse */
+ return;
+ restack(selmon);
+ ocx = c->x;
+ ocy = c->y;
+ if (XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
+ None, cursor[CurResize]->cursor, CurrentTime) != GrabSuccess)
+ return;
+ XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->bw - 1, c->h + c->bw - 1);
+ do {
+ XMaskEvent(dpy, MOUSEMASK|ExposureMask|SubstructureRedirectMask, &ev);
+ switch(ev.type) {
+ case ConfigureRequest:
+ case Expose:
+ case MapRequest:
+ handler[ev.type](&ev);
+ break;
+ case MotionNotify:
+ if ((ev.xmotion.time - lasttime) <= (1000 / 60))
+ continue;
+ lasttime = ev.xmotion.time;
+
+ nw = MAX(ev.xmotion.x - ocx - 2 * c->bw + 1, 1);
+ nh = MAX(ev.xmotion.y - ocy - 2 * c->bw + 1, 1);
+ if (c->mon->wx + nw >= selmon->wx && c->mon->wx + nw <= selmon->wx + selmon->ww
+ && c->mon->wy + nh >= selmon->wy && c->mon->wy + nh <= selmon->wy + selmon->wh)
+ {
+ if (!c->isfloating && selmon->lt[selmon->sellt]->arrange
+ && (abs(nw - c->w) > snap || abs(nh - c->h) > snap))
+ togglefloating(NULL);
+ }
+ if (!selmon->lt[selmon->sellt]->arrange || c->isfloating)
+ resize(c, c->x, c->y, nw, nh, 1);
+ break;
+ }
+ } while (ev.type != ButtonRelease);
+ XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->bw - 1, c->h + c->bw - 1);
+ XUngrabPointer(dpy, CurrentTime);
+ while (XCheckMaskEvent(dpy, EnterWindowMask, &ev));
+ if ((m = recttomon(c->x, c->y, c->w, c->h)) != selmon) {
+ sendmon(c, m);
+ selmon = m;
+ focus(NULL);
+ }
+}
+
+void
+restack(Monitor *m)
+{
+ Client *c;
+ XEvent ev;
+ XWindowChanges wc;
+
+ drawbar(m);
+ if (!m->sel)
+ return;
+ if (m->sel->isfloating || !m->lt[m->sellt]->arrange)
+ XRaiseWindow(dpy, m->sel->win);
+ if (m->lt[m->sellt]->arrange) {
+ wc.stack_mode = Below;
+ wc.sibling = m->barwin;
+ for (c = m->stack; c; c = c->snext)
+ if (!c->isfloating && ISVISIBLE(c)) {
+ XConfigureWindow(dpy, c->win, CWSibling|CWStackMode, &wc);
+ wc.sibling = c->win;
+ }
+ }
+ XSync(dpy, False);
+ while (XCheckMaskEvent(dpy, EnterWindowMask, &ev));
+}
+
+void
+run(void)
+{
+ XEvent ev;
+ /* main event loop */
+ XSync(dpy, False);
+ while (running && !XNextEvent(dpy, &ev))
+ if (handler[ev.type])
+ handler[ev.type](&ev); /* call handler */
+}
+
+void
+runAutostart(void) {
+ system("cd /home/tdr/.dwm; ./autostart_blocking.sh");
+ system("cd /home/tdr/.config/suckless/dwm/scripts; ./autostart.sh &");
+}
+
+void
+scan(void)
+{
+ unsigned int i, num;
+ Window d1, d2, *wins = NULL;
+ XWindowAttributes wa;
+
+ if (XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
+ for (i = 0; i < num; i++) {
+ if (!XGetWindowAttributes(dpy, wins[i], &wa)
+ || wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
+ continue;
+ if (wa.map_state == IsViewable || getstate(wins[i]) == IconicState)
+ manage(wins[i], &wa);
+ }
+ for (i = 0; i < num; i++) { /* now the transients */
+ if (!XGetWindowAttributes(dpy, wins[i], &wa))
+ continue;
+ if (XGetTransientForHint(dpy, wins[i], &d1)
+ && (wa.map_state == IsViewable || getstate(wins[i]) == IconicState))
+ manage(wins[i], &wa);
+ }
+ if (wins)
+ XFree(wins);
+ }
+}
+
+void
+sendmon(Client *c, Monitor *m)
+{
+ if (c->mon == m)
+ return;
+ unfocus(c, 1);
+ detach(c);
+ detachstack(c);
+ c->mon = m;
+ c->tags = m->tagset[m->seltags]; /* assign tags of target monitor */
+ attach(c);
+ attachstack(c);
+ focus(NULL);
+ arrange(NULL);
+}
+
+void
+setclientstate(Client *c, long state)
+{
+ long data[] = { state, None };
+
+ XChangeProperty(dpy, c->win, wmatom[WMState], wmatom[WMState], 32,
+ PropModeReplace, (unsigned char *)data, 2);
+}
+
+int
+sendevent(Window w, Atom proto, int mask, long d0, long d1, long d2, long d3, long d4)
+{
+ int n;
+ Atom *protocols, mt;
+ int exists = 0;
+ XEvent ev;
+
+ if (proto == wmatom[WMTakeFocus] || proto == wmatom[WMDelete]) {
+ mt = wmatom[WMProtocols];
+ if (XGetWMProtocols(dpy, w, &protocols, &n)) {
+ while (!exists && n--)
+ exists = protocols[n] == proto;
+ XFree(protocols);
+ }
+ }
+ else {
+ exists = True;
+ mt = proto;
+ }
+
+ if (exists) {
+ ev.type = ClientMessage;
+ ev.xclient.window = w;
+ ev.xclient.message_type = mt;
+ ev.xclient.format = 32;
+ ev.xclient.data.l[0] = d0;
+ ev.xclient.data.l[1] = d1;
+ ev.xclient.data.l[2] = d2;
+ ev.xclient.data.l[3] = d3;
+ ev.xclient.data.l[4] = d4;
+ XSendEvent(dpy, w, False, mask, &ev);
+ }
+ return exists;
+}
+
+void
+setfocus(Client *c)
+{
+ if (!c->neverfocus) {
+ XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
+ XChangeProperty(dpy, root, netatom[NetActiveWindow],
+ XA_WINDOW, 32, PropModeReplace,
+ (unsigned char *) &(c->win), 1);
+ }
+ sendevent(c->win, wmatom[WMTakeFocus], NoEventMask, wmatom[WMTakeFocus], CurrentTime, 0, 0, 0);
+}
+
+void
+setfullscreen(Client *c, int fullscreen)
+{
+ if (fullscreen && !c->isfullscreen) {
+ XChangeProperty(dpy, c->win, netatom[NetWMState], XA_ATOM, 32,
+ PropModeReplace, (unsigned char*)&netatom[NetWMFullscreen], 1);
+ c->isfullscreen = 1;
+ c->oldstate = c->isfloating;
+ c->oldbw = c->bw;
+ c->bw = 0;
+ c->isfloating = 1;
+ resizeclient(c, c->mon->mx, c->mon->my, c->mon->mw, c->mon->mh);
+ XRaiseWindow(dpy, c->win);
+ } else if (!fullscreen && c->isfullscreen){
+ XChangeProperty(dpy, c->win, netatom[NetWMState], XA_ATOM, 32,
+ PropModeReplace, (unsigned char*)0, 0);
+ c->isfullscreen = 0;
+ c->isfloating = c->oldstate;
+ c->bw = c->oldbw;
+ c->x = c->oldx;
+ c->y = c->oldy;
+ c->w = c->oldw;
+ c->h = c->oldh;
+ resizeclient(c, c->x, c->y, c->w, c->h);
+ arrange(c->mon);
+ }
+}
+
+void
+setgaps(const Arg *arg)
+{
+ if ((arg->i == 0) || (selmon->gappx + arg->i < 0))
+ selmon->gappx = 0;
+ else
+ selmon->gappx += arg->i;
+ arrange(selmon);
+}
+
+void
+setlayout(const Arg *arg)
+{
+ if (!arg || !arg->v || arg->v != selmon->lt[selmon->sellt])
+ selmon->sellt ^= 1;
+ if (arg && arg->v)
+ selmon->lt[selmon->sellt] = (Layout *)arg->v;
+ strncpy(selmon->ltsymbol, selmon->lt[selmon->sellt]->symbol, sizeof selmon->ltsymbol);
+ if (selmon->sel)
+ arrange(selmon);
+ else
+ drawbar(selmon);
+}
+
+/* arg > 1.0 will set mfact absolutely */
+void
+setmfact(const Arg *arg)
+{
+ float f;
+
+ if (!arg || !selmon->lt[selmon->sellt]->arrange)
+ return;
+ f = arg->f < 1.0 ? arg->f + selmon->mfact : arg->f - 1.0;
+ if (f < 0.05 || f > 0.95)
+ return;
+ selmon->mfact = f;
+ arrange(selmon);
+}
+
+void
+setup(void)
+{
+ int i;
+ XSetWindowAttributes wa;
+ Atom utf8string;
+ struct sigaction sa;
+
+ /* do not transform children into zombies when they terminate */
+ sigemptyset(&sa.sa_mask);
+ sa.sa_flags = SA_NOCLDSTOP | SA_NOCLDWAIT | SA_RESTART;
+ sa.sa_handler = SIG_IGN;
+ sigaction(SIGCHLD, &sa, NULL);
+
+ /* clean up any zombies (inherited from .xinitrc etc) immediately */
+ while (waitpid(-1, NULL, WNOHANG) > 0);
+
+ /* init screen */
+ screen = DefaultScreen(dpy);
+ sw = DisplayWidth(dpy, screen);
+ sh = DisplayHeight(dpy, screen);
+ root = RootWindow(dpy, screen);
+ drw = drw_create(dpy, screen, root, sw, sh);
+ if (!drw_fontset_create(drw, fonts, LENGTH(fonts)))
+ die("no fonts could be loaded.");
+ lrpad = drw->fonts->h;
+ bh = drw->fonts->h + 2;
+ updategeom();
+ /* init atoms */
+ utf8string = XInternAtom(dpy, "UTF8_STRING", False);
+ wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
+ wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
+ wmatom[WMState] = XInternAtom(dpy, "WM_STATE", False);
+ wmatom[WMTakeFocus] = XInternAtom(dpy, "WM_TAKE_FOCUS", False);
+ netatom[NetActiveWindow] = XInternAtom(dpy, "_NET_ACTIVE_WINDOW", False);
+ netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
+ netatom[NetSystemTray] = XInternAtom(dpy, "_NET_SYSTEM_TRAY_S0", False);
+ netatom[NetSystemTrayOP] = XInternAtom(dpy, "_NET_SYSTEM_TRAY_OPCODE", False);
+ netatom[NetSystemTrayOrientation] = XInternAtom(dpy, "_NET_SYSTEM_TRAY_ORIENTATION", False);
+ netatom[NetSystemTrayOrientationHorz] = XInternAtom(dpy, "_NET_SYSTEM_TRAY_ORIENTATION_HORZ", False);
+ netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
+ netatom[NetWMState] = XInternAtom(dpy, "_NET_WM_STATE", False);
+ netatom[NetWMCheck] = XInternAtom(dpy, "_NET_SUPPORTING_WM_CHECK", False);
+ netatom[NetWMFullscreen] = XInternAtom(dpy, "_NET_WM_STATE_FULLSCREEN", False);
+ netatom[NetWMWindowType] = XInternAtom(dpy, "_NET_WM_WINDOW_TYPE", False);
+ netatom[NetWMWindowTypeDialog] = XInternAtom(dpy, "_NET_WM_WINDOW_TYPE_DIALOG", False);
+ netatom[NetClientList] = XInternAtom(dpy, "_NET_CLIENT_LIST", False);
+ xatom[Manager] = XInternAtom(dpy, "MANAGER", False);
+ xatom[Xembed] = XInternAtom(dpy, "_XEMBED", False);
+ xatom[XembedInfo] = XInternAtom(dpy, "_XEMBED_INFO", False);
+ /* init cursors */
+ cursor[CurNormal] = drw_cur_create(drw, XC_left_ptr);
+ cursor[CurResize] = drw_cur_create(drw, XC_sizing);
+ cursor[CurMove] = drw_cur_create(drw, XC_fleur);
+ /* init appearance */
+ scheme = ecalloc(LENGTH(colors), sizeof(Clr *));
+ for (i = 0; i < LENGTH(colors); i++)
+ scheme[i] = drw_scm_create(drw, colors[i], 3);
+ /* init system tray */
+ updatesystray();
+ /* init bars */
+ updatebars();
+ updatestatus();
+ /* supporting window for NetWMCheck */
+ wmcheckwin = XCreateSimpleWindow(dpy, root, 0, 0, 1, 1, 0, 0, 0);
+ XChangeProperty(dpy, wmcheckwin, netatom[NetWMCheck], XA_WINDOW, 32,
+ PropModeReplace, (unsigned char *) &wmcheckwin, 1);
+ XChangeProperty(dpy, wmcheckwin, netatom[NetWMName], utf8string, 8,
+ PropModeReplace, (unsigned char *) "dwm", 3);
+ XChangeProperty(dpy, root, netatom[NetWMCheck], XA_WINDOW, 32,
+ PropModeReplace, (unsigned char *) &wmcheckwin, 1);
+ /* EWMH support per view */
+ XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
+ PropModeReplace, (unsigned char *) netatom, NetLast);
+ XDeleteProperty(dpy, root, netatom[NetClientList]);
+ /* select events */
+ wa.cursor = cursor[CurNormal]->cursor;
+ wa.event_mask = SubstructureRedirectMask|SubstructureNotifyMask
+ |ButtonPressMask|PointerMotionMask|EnterWindowMask
+ |LeaveWindowMask|StructureNotifyMask|PropertyChangeMask;
+ XChangeWindowAttributes(dpy, root, CWEventMask|CWCursor, &wa);
+ XSelectInput(dpy, root, wa.event_mask);
+ grabkeys();
+ focus(NULL);
+}
+
+void
+seturgent(Client *c, int urg)
+{
+ XWMHints *wmh;
+
+ c->isurgent = urg;
+ if (!(wmh = XGetWMHints(dpy, c->win)))
+ return;
+ wmh->flags = urg ? (wmh->flags | XUrgencyHint) : (wmh->flags & ~XUrgencyHint);
+ XSetWMHints(dpy, c->win, wmh);
+ XFree(wmh);
+}
+
+void
+showhide(Client *c)
+{
+ if (!c)
+ return;
+ if (ISVISIBLE(c)) {
+ /* show clients top down */
+ XMoveWindow(dpy, c->win, c->x, c->y);
+ if ((!c->mon->lt[c->mon->sellt]->arrange || c->isfloating) && !c->isfullscreen)
+ resize(c, c->x, c->y, c->w, c->h, 0);
+ showhide(c->snext);
+ } else {
+ /* hide clients bottom up */
+ showhide(c->snext);
+ XMoveWindow(dpy, c->win, WIDTH(c) * -2, c->y);
+ }
+}
+
+void
+spawn(const Arg *arg)
+{
+ struct sigaction sa;
+
+ if (arg->v == dmenucmd)
+ dmenumon[0] = '0' + selmon->num;
+ if (fork() == 0) {
+ if (dpy)
+ close(ConnectionNumber(dpy));
+ setsid();
+
+ sigemptyset(&sa.sa_mask);
+ sa.sa_flags = 0;
+ sa.sa_handler = SIG_DFL;
+ sigaction(SIGCHLD, &sa, NULL);
+
+ execvp(((char **)arg->v)[0], (char **)arg->v);
+ die("dwm: execvp '%s' failed:", ((char **)arg->v)[0]);
+ }
+}
+
+void
+tag(const Arg *arg)
+{
+ if (selmon->sel && arg->ui & TAGMASK) {
+ selmon->sel->tags = arg->ui & TAGMASK;
+ focus(NULL);
+ arrange(selmon);
+ }
+}
+
+void
+tagmon(const Arg *arg)
+{
+ if (!selmon->sel || !mons->next)
+ return;
+ sendmon(selmon->sel, dirtomon(arg->i));
+}
+
+void
+tile(Monitor *m)
+{
+ unsigned int i, n, h, mw, my, ty;
+ Client *c;
+
+ for (n = 0, c = nexttiled(m->clients); c; c = nexttiled(c->next), n++);
+ if (n == 0)
+ return;
+
+ if (n > m->nmaster)
+ mw = m->nmaster ? m->ww * m->mfact : 0;
+ else
+ mw = m->ww - m->gappx;
+ for (i = 0, my = ty = m->gappx, c = nexttiled(m->clients); c; c = nexttiled(c->next), i++)
+ if (i < m->nmaster) {
+ h = (m->wh - my) / (MIN(n, m->nmaster) - i) - m->gappx;
+ resize(c, m->wx + m->gappx, m->wy + my, mw - (2*c->bw) - m->gappx, h - (2*c->bw), 0);
+ if (my + HEIGHT(c) + m->gappx < m->wh)
+ my += HEIGHT(c) + m->gappx;
+ } else {
+ h = (m->wh - ty) / (n - i) - m->gappx;
+ resize(c, m->wx + mw + m->gappx, m->wy + ty, m->ww - mw - (2*c->bw) - 2*m->gappx, h - (2*c->bw), 0);
+ if (ty + HEIGHT(c) + m->gappx < m->wh)
+ ty += HEIGHT(c) + m->gappx;
+ }
+}
+
+void
+togglebar(const Arg *arg)
+{
+ selmon->showbar = !selmon->showbar;
+ updatebarpos(selmon);
+ resizebarwin(selmon);
+ if (showsystray) {
+ XWindowChanges wc;
+ if (!selmon->showbar)
+ wc.y = -bh;
+ else if (selmon->showbar) {
+ wc.y = 0;
+ if (!selmon->topbar)
+ wc.y = selmon->mh - bh;
+ }
+ XConfigureWindow(dpy, systray->win, CWY, &wc);
+ }
+ arrange(selmon);
+}
+
+void
+togglefloating(const Arg *arg)
+{
+ if (!selmon->sel)
+ return;
+ if (selmon->sel->isfullscreen) /* no support for fullscreen windows */
+ return;
+ selmon->sel->isfloating = !selmon->sel->isfloating || selmon->sel->isfixed;
+ if (selmon->sel->isfloating)
+ resize(selmon->sel, selmon->sel->x, selmon->sel->y,
+ selmon->sel->w, selmon->sel->h, 0);
+ arrange(selmon);
+}
+
+void
+toggletag(const Arg *arg)
+{
+ unsigned int newtags;
+
+ if (!selmon->sel)
+ return;
+ newtags = selmon->sel->tags ^ (arg->ui & TAGMASK);
+ if (newtags) {
+ selmon->sel->tags = newtags;
+ focus(NULL);
+ arrange(selmon);
+ }
+}
+
+void
+toggleview(const Arg *arg)
+{
+ unsigned int newtagset = selmon->tagset[selmon->seltags] ^ (arg->ui & TAGMASK);
+
+ if (newtagset) {
+ selmon->tagset[selmon->seltags] = newtagset;
+ focus(NULL);
+ arrange(selmon);
+ }
+}
+
+void
+unfocus(Client *c, int setfocus)
+{
+ if (!c)
+ return;
+ grabbuttons(c, 0);
+ XSetWindowBorder(dpy, c->win, scheme[SchemeNorm][ColBorder].pixel);
+ if (setfocus) {
+ XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
+ XDeleteProperty(dpy, root, netatom[NetActiveWindow]);
+ }
+}
+
+void
+unmanage(Client *c, int destroyed)
+{
+ Monitor *m = c->mon;
+ XWindowChanges wc;
+
+ if (c->swallowing) {
+ unswallow(c);
+ return;
+ }
+
+ Client *s = swallowingclient(c->win);
+ if (s) {
+ free(s->swallowing);
+ s->swallowing = NULL;
+ arrange(m);
+ focus(NULL);
+ return;
+ }
+
+ detach(c);
+ detachstack(c);
+ if (!destroyed) {
+ wc.border_width = c->oldbw;
+ XGrabServer(dpy); /* avoid race conditions */
+ XSetErrorHandler(xerrordummy);
+ XSelectInput(dpy, c->win, NoEventMask);
+ XConfigureWindow(dpy, c->win, CWBorderWidth, &wc); /* restore border */
+ XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
+ setclientstate(c, WithdrawnState);
+ XSync(dpy, False);
+ XSetErrorHandler(xerror);
+ XUngrabServer(dpy);
+ }
+ free(c);
+
+ if (!s) {
+ arrange(m);
+ focus(NULL);
+ updateclientlist();
+ }
+}
+
+void
+unmapnotify(XEvent *e)
+{
+ Client *c;
+ XUnmapEvent *ev = &e->xunmap;
+
+ if ((c = wintoclient(ev->window))) {
+ if (ev->send_event)
+ setclientstate(c, WithdrawnState);
+ else
+ unmanage(c, 0);
+ }
+ else if ((c = wintosystrayicon(ev->window))) {
+ /* KLUDGE! sometimes icons occasionally unmap their windows, but do
+ * _not_ destroy them. We map those windows back */
+ XMapRaised(dpy, c->win);
+ updatesystray();
+ }
+}
+
+void
+updatebars(void)
+{
+ unsigned int w;
+ Monitor *m;
+ XSetWindowAttributes wa = {
+ .override_redirect = True,
+ .background_pixmap = ParentRelative,
+ .event_mask = ButtonPressMask|ExposureMask
+ };
+ XClassHint ch = {"dwm", "dwm"};
+ for (m = mons; m; m = m->next) {
+ if (m->barwin)
+ continue;
+ w = m->ww;
+ if (showsystray && m == systraytomon(m))
+ w -= getsystraywidth();
+ m->barwin = XCreateWindow(dpy, root, m->wx, m->by, w, bh, 0, DefaultDepth(dpy, screen),
+ CopyFromParent, DefaultVisual(dpy, screen),
+ CWOverrideRedirect|CWBackPixmap|CWEventMask, &wa);
+ XDefineCursor(dpy, m->barwin, cursor[CurNormal]->cursor);
+ if (showsystray && m == systraytomon(m))
+ XMapRaised(dpy, systray->win);
+ XMapRaised(dpy, m->barwin);
+ XSetClassHint(dpy, m->barwin, &ch);
+ }
+}
+
+void
+updatebarpos(Monitor *m)
+{
+ m->wy = m->my;
+ m->wh = m->mh;
+ if (m->showbar) {
+ m->wh -= bh;
+ m->by = m->topbar ? m->wy : m->wy + m->wh;
+ m->wy = m->topbar ? m->wy + bh : m->wy;
+ } else
+ m->by = -bh;
+}
+
+void
+updateclientlist()
+{
+ Client *c;
+ Monitor *m;
+
+ XDeleteProperty(dpy, root, netatom[NetClientList]);
+ for (m = mons; m; m = m->next)
+ for (c = m->clients; c; c = c->next)
+ XChangeProperty(dpy, root, netatom[NetClientList],
+ XA_WINDOW, 32, PropModeAppend,
+ (unsigned char *) &(c->win), 1);
+}
+
+int
+updategeom(void)
+{
+ int dirty = 0;
+
+#ifdef XINERAMA
+ if (XineramaIsActive(dpy)) {
+ int i, j, n, nn;
+ Client *c;
+ Monitor *m;
+ XineramaScreenInfo *info = XineramaQueryScreens(dpy, &nn);
+ XineramaScreenInfo *unique = NULL;
+
+ for (n = 0, m = mons; m; m = m->next, n++);
+ /* only consider unique geometries as separate screens */
+ unique = ecalloc(nn, sizeof(XineramaScreenInfo));
+ for (i = 0, j = 0; i < nn; i++)
+ if (isuniquegeom(unique, j, &info[i]))
+ memcpy(&unique[j++], &info[i], sizeof(XineramaScreenInfo));
+ XFree(info);
+ nn = j;
+
+ /* new monitors if nn > n */
+ for (i = n; i < nn; i++) {
+ for (m = mons; m && m->next; m = m->next);
+ if (m)
+ m->next = createmon();
+ else
+ mons = createmon();
+ }
+ for (i = 0, m = mons; i < nn && m; m = m->next, i++)
+ if (i >= n
+ || unique[i].x_org != m->mx || unique[i].y_org != m->my
+ || unique[i].width != m->mw || unique[i].height != m->mh)
+ {
+ dirty = 1;
+ m->num = i;
+ m->mx = m->wx = unique[i].x_org;
+ m->my = m->wy = unique[i].y_org;
+ m->mw = m->ww = unique[i].width;
+ m->mh = m->wh = unique[i].height;
+ updatebarpos(m);
+ }
+ /* removed monitors if n > nn */
+ for (i = nn; i < n; i++) {
+ for (m = mons; m && m->next; m = m->next);
+ while ((c = m->clients)) {
+ dirty = 1;
+ m->clients = c->next;
+ detachstack(c);
+ c->mon = mons;
+ attach(c);
+ attachstack(c);
+ }
+ if (m == selmon)
+ selmon = mons;
+ cleanupmon(m);
+ }
+ free(unique);
+ } else
+#endif /* XINERAMA */
+ { /* default monitor setup */
+ if (!mons)
+ mons = createmon();
+ if (mons->mw != sw || mons->mh != sh) {
+ dirty = 1;
+ mons->mw = mons->ww = sw;
+ mons->mh = mons->wh = sh;
+ updatebarpos(mons);
+ }
+ }
+ if (dirty) {
+ selmon = mons;
+ selmon = wintomon(root);
+ }
+ return dirty;
+}
+
+void
+updatenumlockmask(void)
+{
+ unsigned int i, j;
+ XModifierKeymap *modmap;
+
+ numlockmask = 0;
+ modmap = XGetModifierMapping(dpy);
+ for (i = 0; i < 8; i++)
+ for (j = 0; j < modmap->max_keypermod; j++)
+ if (modmap->modifiermap[i * modmap->max_keypermod + j]
+ == XKeysymToKeycode(dpy, XK_Num_Lock))
+ numlockmask = (1 << i);
+ XFreeModifiermap(modmap);
+}
+
+void
+updatesizehints(Client *c)
+{
+ long msize;
+ XSizeHints size;
+
+ if (!XGetWMNormalHints(dpy, c->win, &size, &msize))
+ /* size is uninitialized, ensure that size.flags aren't used */
+ size.flags = PSize;
+ if (size.flags & PBaseSize) {
+ c->basew = size.base_width;
+ c->baseh = size.base_height;
+ } else if (size.flags & PMinSize) {
+ c->basew = size.min_width;
+ c->baseh = size.min_height;
+ } else
+ c->basew = c->baseh = 0;
+ if (size.flags & PResizeInc) {
+ c->incw = size.width_inc;
+ c->inch = size.height_inc;
+ } else
+ c->incw = c->inch = 0;
+ if (size.flags & PMaxSize) {
+ c->maxw = size.max_width;
+ c->maxh = size.max_height;
+ } else
+ c->maxw = c->maxh = 0;
+ if (size.flags & PMinSize) {
+ c->minw = size.min_width;
+ c->minh = size.min_height;
+ } else if (size.flags & PBaseSize) {
+ c->minw = size.base_width;
+ c->minh = size.base_height;
+ } else
+ c->minw = c->minh = 0;
+ if (size.flags & PAspect) {
+ c->mina = (float)size.min_aspect.y / size.min_aspect.x;
+ c->maxa = (float)size.max_aspect.x / size.max_aspect.y;
+ } else
+ c->maxa = c->mina = 0.0;
+ c->isfixed = (c->maxw && c->maxh && c->maxw == c->minw && c->maxh == c->minh);
+ c->hintsvalid = 1;
+}
+
+void
+updatestatus(void)
+{
+ if (!gettextprop(root, XA_WM_NAME, stext, sizeof(stext)))
+ strcpy(stext, "dwm-"VERSION);
+ drawbar(selmon);
+ updatesystray();
+}
+
+
+void
+updatesystrayicongeom(Client *i, int w, int h)
+{
+ if (i) {
+ i->h = bh;
+ if (w == h)
+ i->w = bh;
+ else if (h == bh)
+ i->w = w;
+ else
+ i->w = (int) ((float)bh * ((float)w / (float)h));
+ applysizehints(i, &(i->x), &(i->y), &(i->w), &(i->h), False);
+ /* force icons into the systray dimensions if they don't want to */
+ if (i->h > bh) {
+ if (i->w == i->h)
+ i->w = bh;
+ else
+ i->w = (int) ((float)bh * ((float)i->w / (float)i->h));
+ i->h = bh;
+ }
+ }
+}
+
+void
+updatesystrayiconstate(Client *i, XPropertyEvent *ev)
+{
+ long flags;
+ int code = 0;
+
+ if (!showsystray || !i || ev->atom != xatom[XembedInfo] ||
+ !(flags = getatomprop(i, xatom[XembedInfo])))
+ return;
+
+ if (flags & XEMBED_MAPPED && !i->tags) {
+ i->tags = 1;
+ code = XEMBED_WINDOW_ACTIVATE;
+ XMapRaised(dpy, i->win);
+ setclientstate(i, NormalState);
+ }
+ else if (!(flags & XEMBED_MAPPED) && i->tags) {
+ i->tags = 0;
+ code = XEMBED_WINDOW_DEACTIVATE;
+ XUnmapWindow(dpy, i->win);
+ setclientstate(i, WithdrawnState);
+ }
+ else
+ return;
+ sendevent(i->win, xatom[Xembed], StructureNotifyMask, CurrentTime, code, 0,
+ systray->win, XEMBED_EMBEDDED_VERSION);
+}
+
+void
+updatesystray(void)
+{
+ XSetWindowAttributes wa;
+ XWindowChanges wc;
+ Client *i;
+ Monitor *m = systraytomon(NULL);
+ unsigned int x = m->mx + m->mw;
+ unsigned int sw = TEXTW(stext) - lrpad + systrayspacing;
+ unsigned int w = 1;
+
+ if (!showsystray)
+ return;
+ if (systrayonleft)
+ x -= sw + lrpad / 2;
+ if (!systray) {
+ /* init systray */
+ if (!(systray = (Systray *)calloc(1, sizeof(Systray))))
+ die("fatal: could not malloc() %u bytes\n", sizeof(Systray));
+ systray->win = XCreateSimpleWindow(dpy, root, x, m->by, w, bh, 0, 0, scheme[SchemeSel][ColBg].pixel);
+ wa.event_mask = ButtonPressMask | ExposureMask;
+ wa.override_redirect = True;
+ wa.background_pixel = scheme[SchemeNorm][ColBg].pixel;
+ XSelectInput(dpy, systray->win, SubstructureNotifyMask);
+ XChangeProperty(dpy, systray->win, netatom[NetSystemTrayOrientation], XA_CARDINAL, 32,
+ PropModeReplace, (unsigned char *)&netatom[NetSystemTrayOrientationHorz], 1);
+ XChangeWindowAttributes(dpy, systray->win, CWEventMask|CWOverrideRedirect|CWBackPixel, &wa);
+ XMapRaised(dpy, systray->win);
+ XSetSelectionOwner(dpy, netatom[NetSystemTray], systray->win, CurrentTime);
+ if (XGetSelectionOwner(dpy, netatom[NetSystemTray]) == systray->win) {
+ sendevent(root, xatom[Manager], StructureNotifyMask, CurrentTime, netatom[NetSystemTray], systray->win, 0, 0);
+ XSync(dpy, False);
+ }
+ else {
+ fprintf(stderr, "dwm: unable to obtain system tray.\n");
+ free(systray);
+ systray = NULL;
+ return;
+ }
+ }
+ for (w = 0, i = systray->icons; i; i = i->next) {
+ /* make sure the background color stays the same */
+ wa.background_pixel = scheme[SchemeNorm][ColBg].pixel;
+ XChangeWindowAttributes(dpy, i->win, CWBackPixel, &wa);
+ XMapRaised(dpy, i->win);
+ w += systrayspacing;
+ i->x = w;
+ XMoveResizeWindow(dpy, i->win, i->x, 0, i->w, i->h);
+ w += i->w;
+ if (i->mon != m)
+ i->mon = m;
+ }
+ w = w ? w + systrayspacing : 1;
+ x -= w;
+ XMoveResizeWindow(dpy, systray->win, x, m->by, w, bh);
+ wc.x = x; wc.y = m->by; wc.width = w; wc.height = bh;
+ wc.stack_mode = Above; wc.sibling = m->barwin;
+ XConfigureWindow(dpy, systray->win, CWX|CWY|CWWidth|CWHeight|CWSibling|CWStackMode, &wc);
+ XMapWindow(dpy, systray->win);
+ XMapSubwindows(dpy, systray->win);
+ /* redraw background */
+ XSetForeground(dpy, drw->gc, scheme[SchemeNorm][ColBg].pixel);
+ XFillRectangle(dpy, systray->win, drw->gc, 0, 0, w, bh);
+ XSync(dpy, False);
+}
+
+void
+updatetitle(Client *c)
+{
+ if (!gettextprop(c->win, netatom[NetWMName], c->name, sizeof c->name))
+ gettextprop(c->win, XA_WM_NAME, c->name, sizeof c->name);
+ if (c->name[0] == '\0') /* hack to mark broken clients */
+ strcpy(c->name, broken);
+}
+
+void
+updatewindowtype(Client *c)
+{
+ Atom state = getatomprop(c, netatom[NetWMState]);
+ Atom wtype = getatomprop(c, netatom[NetWMWindowType]);
+
+ if (state == netatom[NetWMFullscreen])
+ setfullscreen(c, 1);
+ if (wtype == netatom[NetWMWindowTypeDialog])
+ c->isfloating = 1;
+}
+
+void
+updatewmhints(Client *c)
+{
+ XWMHints *wmh;
+
+ if ((wmh = XGetWMHints(dpy, c->win))) {
+ if (c == selmon->sel && wmh->flags & XUrgencyHint) {
+ wmh->flags &= ~XUrgencyHint;
+ XSetWMHints(dpy, c->win, wmh);
+ } else
+ c->isurgent = (wmh->flags & XUrgencyHint) ? 1 : 0;
+ if (wmh->flags & InputHint)
+ c->neverfocus = !wmh->input;
+ else
+ c->neverfocus = 0;
+ XFree(wmh);
+ }
+}
+
+void
+view(const Arg *arg)
+{
+ if ((arg->ui & TAGMASK) == selmon->tagset[selmon->seltags])
+ return;
+ selmon->seltags ^= 1; /* toggle sel tagset */
+ if (arg->ui & TAGMASK)
+ selmon->tagset[selmon->seltags] = arg->ui & TAGMASK;
+ focus(NULL);
+ arrange(selmon);
+}
+
+pid_t
+winpid(Window w)
+{
+
+ pid_t result = 0;
+
+#ifdef __linux__
+ xcb_res_client_id_spec_t spec = {0};
+ spec.client = w;
+ spec.mask = XCB_RES_CLIENT_ID_MASK_LOCAL_CLIENT_PID;
+
+ xcb_generic_error_t *e = NULL;
+ xcb_res_query_client_ids_cookie_t c = xcb_res_query_client_ids(xcon, 1, &spec);
+ xcb_res_query_client_ids_reply_t *r = xcb_res_query_client_ids_reply(xcon, c, &e);
+
+ if (!r)
+ return (pid_t)0;
+
+ xcb_res_client_id_value_iterator_t i = xcb_res_query_client_ids_ids_iterator(r);
+ for (; i.rem; xcb_res_client_id_value_next(&i)) {
+ spec = i.data->spec;
+ if (spec.mask & XCB_RES_CLIENT_ID_MASK_LOCAL_CLIENT_PID) {
+ uint32_t *t = xcb_res_client_id_value_value(i.data);
+ result = *t;
+ break;
+ }
+ }
+
+ free(r);
+
+ if (result == (pid_t)-1)
+ result = 0;
+
+#endif /* __linux__ */
+
+#ifdef __OpenBSD__
+ Atom type;
+ int format;
+ unsigned long len, bytes;
+ unsigned char *prop;
+ pid_t ret;
+
+ if (XGetWindowProperty(dpy, w, XInternAtom(dpy, "_NET_WM_PID", 0), 0, 1, False, AnyPropertyType, &type, &format, &len, &bytes, &prop) != Success || !prop)
+ return 0;
+
+ ret = *(pid_t*)prop;
+ XFree(prop);
+ result = ret;
+
+#endif /* __OpenBSD__ */
+ return result;
+}
+
+pid_t
+getparentprocess(pid_t p)
+{
+ unsigned int v = 0;
+
+#ifdef __linux__
+ FILE *f;
+ char buf[256];
+ snprintf(buf, sizeof(buf) - 1, "/proc/%u/stat", (unsigned)p);
+
+ if (!(f = fopen(buf, "r")))
+ return 0;
+
+ fscanf(f, "%*u %*s %*c %u", &v);
+ fclose(f);
+#endif /* __linux__*/
+
+#ifdef __OpenBSD__
+ int n;
+ kvm_t *kd;
+ struct kinfo_proc *kp;
+
+ kd = kvm_openfiles(NULL, NULL, NULL, KVM_NO_FILES, NULL);
+ if (!kd)
+ return 0;
+
+ kp = kvm_getprocs(kd, KERN_PROC_PID, p, sizeof(*kp), &n);
+ v = kp->p_ppid;
+#endif /* __OpenBSD__ */
+
+ return (pid_t)v;
+}
+
+int
+isdescprocess(pid_t p, pid_t c)
+{
+ while (p != c && c != 0)
+ c = getparentprocess(c);
+
+ return (int)c;
+}
+
+Client *
+termforwin(const Client *w)
+{
+ Client *c;
+ Monitor *m;
+
+ if (!w->pid || w->isterminal)
+ return NULL;
+
+ for (m = mons; m; m = m->next) {
+ for (c = m->clients; c; c = c->next) {
+ if (c->isterminal && !c->swallowing && c->pid && isdescprocess(c->pid, w->pid))
+ return c;
+ }
+ }
+
+ return NULL;
+}
+
+Client *
+swallowingclient(Window w)
+{
+ Client *c;
+ Monitor *m;
+
+ for (m = mons; m; m = m->next) {
+ for (c = m->clients; c; c = c->next) {
+ if (c->swallowing && c->swallowing->win == w)
+ return c;
+ }
+ }
+
+ return NULL;
+}
+
+Client *
+wintoclient(Window w)
+{
+ Client *c;
+ Monitor *m;
+
+ for (m = mons; m; m = m->next)
+ for (c = m->clients; c; c = c->next)
+ if (c->win == w)
+ return c;
+ return NULL;
+}
+
+Client *
+wintosystrayicon(Window w) {
+ Client *i = NULL;
+
+ if (!showsystray || !w)
+ return i;
+ for (i = systray->icons; i && i->win != w; i = i->next) ;
+ return i;
+}
+
+Monitor *
+wintomon(Window w)
+{
+ int x, y;
+ Client *c;
+ Monitor *m;
+
+ if (w == root && getrootptr(&x, &y))
+ return recttomon(x, y, 1, 1);
+ for (m = mons; m; m = m->next)
+ if (w == m->barwin)
+ return m;
+ if ((c = wintoclient(w)))
+ return c->mon;
+ return selmon;
+}
+
+/* There's no way to check accesses to destroyed windows, thus those cases are
+ * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
+ * default error handler, which may call exit. */
+int
+xerror(Display *dpy, XErrorEvent *ee)
+{
+ if (ee->error_code == BadWindow
+ || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
+ || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
+ || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
+ || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
+ || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
+ || (ee->request_code == X_GrabButton && ee->error_code == BadAccess)
+ || (ee->request_code == X_GrabKey && ee->error_code == BadAccess)
+ || (ee->request_code == X_CopyArea && ee->error_code == BadDrawable))
+ return 0;
+ fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
+ ee->request_code, ee->error_code);
+ return xerrorxlib(dpy, ee); /* may call exit */
+}
+
+int
+xerrordummy(Display *dpy, XErrorEvent *ee)
+{
+ return 0;
+}
+
+/* Startup Error handler to check if another window manager
+ * is already running. */
+int
+xerrorstart(Display *dpy, XErrorEvent *ee)
+{
+ die("dwm: another window manager is already running");
+ return -1;
+}
+
+Monitor *
+systraytomon(Monitor *m) {
+ Monitor *t;
+ int i, n;
+ if(!systraypinning) {
+ if(!m)
+ return selmon;
+ return m == selmon ? m : NULL;
+ }
+ for(n = 1, t = mons; t && t->next; n++, t = t->next) ;
+ for(i = 1, t = mons; t && t->next && i < systraypinning; i++, t = t->next) ;
+ if(systraypinningfailfirst && n < systraypinning)
+ return mons;
+ return t;
+}
+
+void
+zoom(const Arg *arg)
+{
+ Client *c = selmon->sel;
+
+ if (!selmon->lt[selmon->sellt]->arrange || !c || c->isfloating)
+ return;
+ if (c == nexttiled(selmon->clients) && !(c = nexttiled(c->next)))
+ return;
+ pop(c);
+}
+
+int
+main(int argc, char *argv[])
+{
+ if (argc == 2 && !strcmp("-v", argv[1]))
+ die("dwm-"VERSION);
+ else if (argc != 1)
+ die("usage: dwm [-v]");
+ if (!setlocale(LC_CTYPE, "") || !XSupportsLocale())
+ fputs("warning: no locale support\n", stderr);
+ if (!(dpy = XOpenDisplay(NULL)))
+ die("dwm: cannot open display");
+ if (!(xcon = XGetXCBConnection(dpy)))
+ die("dwm: cannot get xcb connection\n");
+ checkotherwm();
+ setup();
+#ifdef __OpenBSD__
+ if (pledge("stdio rpath proc exec ps", NULL) == -1)
+ die("pledge");
+#endif /* __OpenBSD__ */
+ scan();
+ runAutostart();
+ run();
+ cleanup();
+ XCloseDisplay(dpy);
+ return EXIT_SUCCESS;
+}
diff --git a/dwm/dwm.png b/dwm/dwm.png
Binary files differ.
diff --git a/dwm/scripts/autostart.sh b/dwm/scripts/autostart.sh
@@ -0,0 +1,16 @@
+#! /bin/sh
+
+xset r rate 300 50
+# setxkbmap -option ctrl:nocaps
+setxkbmap -option caps:super
+setxkbmap -layout us,ru -option 'grp:win_space_toggle' &
+#picom &
+dunst &
+feh --bg-scale ~/.config/nix/home-manager/modules/VngWallpaper.png
+nm-applet &
+sh ~/.config/kensington-trackball-setup.sh &
+sh ./batteryNotification.sh &
+while true; do
+ sh /home/tdr/.config/suckless/dwm/scripts/bar.sh
+ sleep 1s
+done
diff --git a/dwm/scripts/bar.sh b/dwm/scripts/bar.sh
@@ -0,0 +1,3 @@
+#! /bin/sh
+
+xsetroot -name "| $(sh ./brightness.sh) | $(sh ./volumeStatusChecker.sh) | $(sh ./batteryStatusChecker.sh) | $(date '+ %d-%m-%Y | %H:%M') |"
diff --git a/dwm/scripts/batteryNotification.sh b/dwm/scripts/batteryNotification.sh
@@ -0,0 +1,16 @@
+#! /bin/sh
+
+export DISPLAY=:0
+export DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/1000/bus
+
+
+while true; do
+ battery=$(acpi -b | awk '{print $4}' | sed s/%,//)
+ charging=$(acpi -b | grep -c "Charging")
+ if [ "$battery" -lt 20 ] && [ "$charging" -eq 0 ]; then
+ notify-send --urgency=critical "Low Battery!" "Your battery is at $battery %"
+ elif [ "$battery" -gt 90 ] && [ "$charging" -eq 1 ]; then
+ notify-send --urgency=normal "Battery fully charged" "Your battery is at $battery %"
+ fi
+ sleep 5m
+done
diff --git a/dwm/scripts/batteryStatusChecker.sh b/dwm/scripts/batteryStatusChecker.sh
@@ -0,0 +1,22 @@
+#! /bin/sh
+
+battery=$(acpi -b | awk '{print $4}' | sed s/%,//)
+charging=$(acpi -b | grep -c "Charging")
+if [ "$charging" -eq 1 ]; then
+ echo " $battery %"
+elif [ "$battery" -eq 100 ]; then
+ echo "FULL"
+elif [ "$battery" -gt 80 ]; then
+ echo " $battery %"
+elif [ "$battery" -gt 60 ]; then
+ echo " $battery %"
+elif [ "$battery" -gt 40 ]; then
+ echo " $battery %"
+elif [ "$battery" -gt 20 ]; then
+ echo " $battery %"
+elif [ "$battery" -gt 10 ]; then
+ echo " $battery %"
+elif [ "$battery" -gt 0 ]; then
+ echo -e " $battery %"
+fi
+
diff --git a/dwm/scripts/brightness.sh b/dwm/scripts/brightness.sh
@@ -0,0 +1,4 @@
+#! /bin/sh
+
+brightness=$(light)
+echo " $brightness"
diff --git a/dwm/scripts/dmenuLogout.sh b/dwm/scripts/dmenuLogout.sh
@@ -0,0 +1,2 @@
+#! /bin/sh
+echo -e "shutdown now \n reboot" | dmenu | /bin/sh
diff --git a/dwm/scripts/volumeNotificaton.sh b/dwm/scripts/volumeNotificaton.sh
@@ -0,0 +1,9 @@
+#! /bin/sh
+
+output=$(amixer get Master | grep -c '\[on\]')
+volume=$(amixer get Master | grep 'Front Left:' | awk -F'[][]' '{print $2}')
+if [ "$output" -eq 0 ]; then
+ notify-send "Volume" " Muted"
+else
+ notify-send "Volume" " $volume"
+fi
diff --git a/dwm/scripts/volumeStatusChecker.sh b/dwm/scripts/volumeStatusChecker.sh
@@ -0,0 +1,10 @@
+#! /bin/sh
+
+output=$(amixer get Master | grep -c '\[on\]')
+volume=$(amixer get Master | grep 'Front Left:' | awk -F'[][]' '{print $2}')
+if [ "$output" -eq 0 ]; then
+ echo " $volume"
+else
+ echo " $volume"
+fi
+
diff --git a/dwm/transient.c b/dwm/transient.c
@@ -0,0 +1,42 @@
+/* cc transient.c -o transient -lX11 */
+
+#include <stdlib.h>
+#include <unistd.h>
+#include <X11/Xlib.h>
+#include <X11/Xutil.h>
+
+int main(void) {
+ Display *d;
+ Window r, f, t = None;
+ XSizeHints h;
+ XEvent e;
+
+ d = XOpenDisplay(NULL);
+ if (!d)
+ exit(1);
+ r = DefaultRootWindow(d);
+
+ f = XCreateSimpleWindow(d, r, 100, 100, 400, 400, 0, 0, 0);
+ h.min_width = h.max_width = h.min_height = h.max_height = 400;
+ h.flags = PMinSize | PMaxSize;
+ XSetWMNormalHints(d, f, &h);
+ XStoreName(d, f, "floating");
+ XMapWindow(d, f);
+
+ XSelectInput(d, f, ExposureMask);
+ while (1) {
+ XNextEvent(d, &e);
+
+ if (t == None) {
+ sleep(5);
+ t = XCreateSimpleWindow(d, r, 50, 50, 100, 100, 0, 0, 0);
+ XSetTransientForHint(d, t, f);
+ XStoreName(d, t, "transient");
+ XMapWindow(d, t);
+ XSelectInput(d, t, ExposureMask);
+ }
+ }
+
+ XCloseDisplay(d);
+ exit(0);
+}
diff --git a/dwm/util.c b/dwm/util.c
@@ -0,0 +1,36 @@
+/* See LICENSE file for copyright and license details. */
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "util.h"
+
+void
+die(const char *fmt, ...)
+{
+ va_list ap;
+
+ va_start(ap, fmt);
+ vfprintf(stderr, fmt, ap);
+ va_end(ap);
+
+ if (fmt[0] && fmt[strlen(fmt)-1] == ':') {
+ fputc(' ', stderr);
+ perror(NULL);
+ } else {
+ fputc('\n', stderr);
+ }
+
+ exit(1);
+}
+
+void *
+ecalloc(size_t nmemb, size_t size)
+{
+ void *p;
+
+ if (!(p = calloc(nmemb, size)))
+ die("calloc:");
+ return p;
+}
diff --git a/dwm/util.h b/dwm/util.h
@@ -0,0 +1,8 @@
+/* See LICENSE file for copyright and license details. */
+
+#define MAX(A, B) ((A) > (B) ? (A) : (B))
+#define MIN(A, B) ((A) < (B) ? (A) : (B))
+#define BETWEEN(X, A, B) ((A) <= (X) && (X) <= (B))
+
+void die(const char *fmt, ...);
+void *ecalloc(size_t nmemb, size_t size);
diff --git a/slock/LICENSE b/slock/LICENSE
@@ -0,0 +1,24 @@
+MIT/X Consortium License
+
+© 2015-2016 Markus Teich <markus.teich@stusta.mhn.de>
+© 2014 Dimitris Papastamos <sin@2f30.org>
+© 2006-2014 Anselm R Garbe <anselm@garbe.us>
+© 2014-2016 Laslo Hunhold <dev@frign.de>
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the "Software"),
+to deal in the Software without restriction, including without limitation
+the rights to use, copy, modify, merge, publish, distribute, sublicense,
+and/or sell copies of the Software, and to permit persons to whom the
+Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+DEALINGS IN THE SOFTWARE.
diff --git a/slock/Makefile b/slock/Makefile
@@ -0,0 +1,61 @@
+# slock - simple screen locker
+# See LICENSE file for copyright and license details.
+
+include config.mk
+
+SRC = slock.c ${COMPATSRC}
+OBJ = ${SRC:.c=.o}
+
+all: options slock
+
+options:
+ @echo slock build options:
+ @echo "CFLAGS = ${CFLAGS}"
+ @echo "LDFLAGS = ${LDFLAGS}"
+ @echo "CC = ${CC}"
+
+.c.o:
+ @echo CC $<
+ @${CC} -c ${CFLAGS} $<
+
+${OBJ}: config.h config.mk arg.h util.h
+
+config.h:
+ @echo creating $@ from config.def.h
+ @cp config.def.h $@
+
+slock: ${OBJ}
+ @echo CC -o $@
+ @${CC} -o $@ ${OBJ} ${LDFLAGS}
+
+clean:
+ @echo cleaning
+ @rm -f slock ${OBJ} slock-${VERSION}.tar.gz
+
+dist: clean
+ @echo creating dist tarball
+ @mkdir -p slock-${VERSION}
+ @cp -R LICENSE Makefile README slock.1 config.mk \
+ ${SRC} config.def.h arg.h util.h slock-${VERSION}
+ @tar -cf slock-${VERSION}.tar slock-${VERSION}
+ @gzip slock-${VERSION}.tar
+ @rm -rf slock-${VERSION}
+
+install: all
+ @echo installing executable file to ${DESTDIR}${PREFIX}/bin
+ @mkdir -p ${DESTDIR}${PREFIX}/bin
+ @cp -f slock ${DESTDIR}${PREFIX}/bin
+ @chmod 755 ${DESTDIR}${PREFIX}/bin/slock
+ @chmod u+s ${DESTDIR}${PREFIX}/bin/slock
+ @echo installing manual page to ${DESTDIR}${MANPREFIX}/man1
+ @mkdir -p ${DESTDIR}${MANPREFIX}/man1
+ @sed "s/VERSION/${VERSION}/g" <slock.1 >${DESTDIR}${MANPREFIX}/man1/slock.1
+ @chmod 644 ${DESTDIR}${MANPREFIX}/man1/slock.1
+
+uninstall:
+ @echo removing executable file from ${DESTDIR}${PREFIX}/bin
+ @rm -f ${DESTDIR}${PREFIX}/bin/slock
+ @echo removing manual page from ${DESTDIR}${MANPREFIX}/man1
+ @rm -f ${DESTDIR}${MANPREFIX}/man1/slock.1
+
+.PHONY: all options clean dist install uninstall
diff --git a/slock/README b/slock/README
@@ -0,0 +1,24 @@
+slock - simple screen locker
+============================
+simple screen locker utility for X.
+
+
+Requirements
+------------
+In order to build slock you need the Xlib header files.
+
+
+Installation
+------------
+Edit config.mk to match your local setup (slock is installed into
+the /usr/local namespace by default).
+
+Afterwards enter the following command to build and install slock
+(if necessary as root):
+
+ make clean install
+
+
+Running slock
+-------------
+Simply invoke the 'slock' command. To get out of it, enter your password.
diff --git a/slock/arg.h b/slock/arg.h
@@ -0,0 +1,65 @@
+/*
+ * Copy me if you can.
+ * by 20h
+ */
+
+#ifndef ARG_H__
+#define ARG_H__
+
+extern char *argv0;
+
+/* use main(int argc, char *argv[]) */
+#define ARGBEGIN for (argv0 = *argv, argv++, argc--;\
+ argv[0] && argv[0][0] == '-'\
+ && argv[0][1];\
+ argc--, argv++) {\
+ char argc_;\
+ char **argv_;\
+ int brk_;\
+ if (argv[0][1] == '-' && argv[0][2] == '\0') {\
+ argv++;\
+ argc--;\
+ break;\
+ }\
+ for (brk_ = 0, argv[0]++, argv_ = argv;\
+ argv[0][0] && !brk_;\
+ argv[0]++) {\
+ if (argv_ != argv)\
+ break;\
+ argc_ = argv[0][0];\
+ switch (argc_)
+
+/* Handles obsolete -NUM syntax */
+#define ARGNUM case '0':\
+ case '1':\
+ case '2':\
+ case '3':\
+ case '4':\
+ case '5':\
+ case '6':\
+ case '7':\
+ case '8':\
+ case '9'
+
+#define ARGEND }\
+ }
+
+#define ARGC() argc_
+
+#define ARGNUMF() (brk_ = 1, estrtonum(argv[0], 0, INT_MAX))
+
+#define EARGF(x) ((argv[0][1] == '\0' && argv[1] == NULL)?\
+ ((x), abort(), (char *)0) :\
+ (brk_ = 1, (argv[0][1] != '\0')?\
+ (&argv[0][1]) :\
+ (argc--, argv++, argv[0])))
+
+#define ARGF() ((argv[0][1] == '\0' && argv[1] == NULL)?\
+ (char *)0 :\
+ (brk_ = 1, (argv[0][1] != '\0')?\
+ (&argv[0][1]) :\
+ (argc--, argv++, argv[0])))
+
+#define LNGARG() &argv[0][0]
+
+#endif
diff --git a/slock/config.def.h b/slock/config.def.h
@@ -0,0 +1,21 @@
+/* user and group to drop privileges to */
+static const char *user = "nobody";
+static const char *group = "nogroup";
+
+static const char *colorname[NUMCOLS] = {
+ [INIT] = "black", /* after initialization */
+ [INPUT] = "#005577", /* during input */
+ [FAILED] = "#CC3333", /* wrong password */
+};
+
+/* treat a cleared input like a wrong password (color) */
+static const int failonclear = 1;
+
+/*Enable blur*/
+#define BLUR
+/*Set blur radius*/
+static const int blurRadius=5;
+/*Enable Pixelation*/
+//#define PIXELATION
+/*Set pixelation radius*/
+static const int pixelSize=0;
diff --git a/slock/config.h b/slock/config.h
@@ -0,0 +1,21 @@
+/* user and group to drop privileges to */
+static const char *user = "nobody";
+static const char *group = "nogroup";
+
+static const char *colorname[NUMCOLS] = {
+ [INIT] = "black", /* after initialization */
+ [INPUT] = "#005577", /* during input */
+ [FAILED] = "#CC3333", /* wrong password */
+};
+
+/* treat a cleared input like a wrong password (color) */
+static const int failonclear = 1;
+
+/*Enable blur*/
+#define BLUR
+/*Set blur radius*/
+static const int blurRadius=5;
+/*Enable Pixelation*/
+//#define PIXELATION
+/*Set pixelation radius*/
+static const int pixelSize=0;
diff --git a/slock/config.mk b/slock/config.mk
@@ -0,0 +1,32 @@
+# slock version
+VERSION = 1.5
+
+# Customize below to fit your system
+
+# paths
+PREFIX = /usr/local
+MANPREFIX = ${PREFIX}/share/man
+
+X11INC = /usr/X11R6/include
+X11LIB = /usr/X11R6/lib
+
+# includes and libs
+INCS = -I. -I/usr/include -I${X11INC}
+LIBS = -L/usr/lib -lc -lcrypt -L${X11LIB} -lX11 -lXext -lXrandr -lImlib2
+
+# flags
+CPPFLAGS = -DVERSION=\"${VERSION}\" -D_DEFAULT_SOURCE -DHAVE_SHADOW_H
+CFLAGS = -std=c99 -pedantic -Wall -Ofast ${INCS} ${CPPFLAGS}
+LDFLAGS = -s ${LIBS}
+COMPATSRC = explicit_bzero.c
+
+# On OpenBSD and Darwin remove -lcrypt from LIBS
+#LIBS = -L/usr/lib -lc -L${X11LIB} -lX11 -lXext -lXrandr
+# On *BSD remove -DHAVE_SHADOW_H from CPPFLAGS
+# On NetBSD add -D_NETBSD_SOURCE to CPPFLAGS
+#CPPFLAGS = -DVERSION=\"${VERSION}\" -D_BSD_SOURCE -D_NETBSD_SOURCE
+# On OpenBSD set COMPATSRC to empty
+#COMPATSRC =
+
+# compiler and linker
+CC = cc
diff --git a/slock/explicit_bzero.c b/slock/explicit_bzero.c
@@ -0,0 +1,19 @@
+/* $OpenBSD: explicit_bzero.c,v 1.3 2014/06/21 02:34:26 matthew Exp $ */
+/*
+ * Public domain.
+ * Written by Matthew Dempsky.
+ */
+
+#include <string.h>
+
+__attribute__((weak)) void
+__explicit_bzero_hook(void *buf, size_t len)
+{
+}
+
+void
+explicit_bzero(void *buf, size_t len)
+{
+ memset(buf, 0, len);
+ __explicit_bzero_hook(buf, len);
+}
diff --git a/slock/explicit_bzero.o b/slock/explicit_bzero.o
Binary files differ.
diff --git a/slock/slock b/slock/slock
Binary files differ.
diff --git a/slock/slock-blur_pixelated_screen-1.4.diff b/slock/slock-blur_pixelated_screen-1.4.diff
@@ -0,0 +1,356 @@
+From 36a4863f9a399740aaf8b1e01926485c0a055e1c Mon Sep 17 00:00:00 2001
+From: Lars Niesen <iah71niesen@gso-koeln.de>
+Date: Wed, 29 Apr 2020 13:52:42 +0200
+Subject: [PATCH 1/8] Added Bg patch and screenshot capabilities
+
+---
+ config.mk | 2 +-
+ slock.c | 35 +++++++++++++++++++++++++++++++----
+ 2 files changed, 32 insertions(+), 5 deletions(-)
+
+diff --git a/config.mk b/config.mk
+index 74429ae..987819e 100644
+--- a/config.mk
++++ b/config.mk
+@@ -12,7 +12,7 @@ X11LIB = /usr/X11R6/lib
+
+ # includes and libs
+ INCS = -I. -I/usr/include -I${X11INC}
+-LIBS = -L/usr/lib -lc -lcrypt -L${X11LIB} -lX11 -lXext -lXrandr
++LIBS = -L/usr/lib -lc -lcrypt -L${X11LIB} -lX11 -lXext -lXrandr -lImlib2
+
+ # flags
+ CPPFLAGS = -DVERSION=\"${VERSION}\" -D_DEFAULT_SOURCE -DHAVE_SHADOW_H
+diff --git a/slock.c b/slock.c
+index 5ae738c..7c63f34 100644
+--- a/slock.c
++++ b/slock.c
+@@ -18,6 +18,7 @@
+ #include <X11/keysym.h>
+ #include <X11/Xlib.h>
+ #include <X11/Xutil.h>
++#include <Imlib2.h>
+
+ #include "arg.h"
+ #include "util.h"
+@@ -35,6 +36,7 @@ struct lock {
+ int screen;
+ Window root, win;
+ Pixmap pmap;
++ Pixmap bgmap;
+ unsigned long colors[NUMCOLS];
+ };
+
+@@ -46,6 +48,8 @@ struct xrandr {
+
+ #include "config.h"
+
++Imlib_Image image;
++
+ static void
+ die(const char *errstr, ...)
+ {
+@@ -190,9 +194,10 @@ readpw(Display *dpy, struct xrandr *rr, struct lock **locks, int nscreens,
+ color = len ? INPUT : ((failure || failonclear) ? FAILED : INIT);
+ if (running && oldc != color) {
+ for (screen = 0; screen < nscreens; screen++) {
+- XSetWindowBackground(dpy,
+- locks[screen]->win,
+- locks[screen]->colors[color]);
++ if(locks[screen]->bgmap)
++ XSetWindowBackgroundPixmap(dpy, locks[screen]->win, locks[screen]->bgmap);
++ else
++ XSetWindowBackground(dpy, locks[screen]->win, locks[screen]->colors[0]);
+ XClearWindow(dpy, locks[screen]->win);
+ }
+ oldc = color;
+@@ -235,6 +240,17 @@ lockscreen(Display *dpy, struct xrandr *rr, int screen)
+ lock->screen = screen;
+ lock->root = RootWindow(dpy, lock->screen);
+
++ if(image)
++ {
++ lock->bgmap = XCreatePixmap(dpy, lock->root, DisplayWidth(dpy, lock->screen), DisplayHeight(dpy, lock->screen), DefaultDepth(dpy, lock->screen));
++ imlib_context_set_image(image);
++ imlib_context_set_display(dpy);
++ imlib_context_set_visual(DefaultVisual(dpy, lock->screen));
++ imlib_context_set_colormap(DefaultColormap(dpy, lock->screen));
++ imlib_context_set_drawable(lock->bgmap);
++ imlib_render_image_on_drawable(0, 0);
++ imlib_free_image();
++ }
+ for (i = 0; i < NUMCOLS; i++) {
+ XAllocNamedColor(dpy, DefaultColormap(dpy, lock->screen),
+ colorname[i], &color, &dummy);
+@@ -251,6 +267,8 @@ lockscreen(Display *dpy, struct xrandr *rr, int screen)
+ CopyFromParent,
+ DefaultVisual(dpy, lock->screen),
+ CWOverrideRedirect | CWBackPixel, &wa);
++ if(lock->bgmap)
++ XSetWindowBackgroundPixmap(dpy, lock->win, lock->bgmap);
+ lock->pmap = XCreateBitmapFromData(dpy, lock->win, curs, 8, 8);
+ invisible = XCreatePixmapCursor(dpy, lock->pmap, lock->pmap,
+ &color, &color, 0, 0);
+@@ -354,7 +372,16 @@ main(int argc, char **argv) {
+ die("slock: setgid: %s\n", strerror(errno));
+ if (setuid(duid) < 0)
+ die("slock: setuid: %s\n", strerror(errno));
+-
++
++ /*Create screenshot Image*/
++ Screen *scr = ScreenOfDisplay(dpy, DefaultScreen(dpy));
++ image = imlib_create_image(scr->width,scr->height);
++ imlib_context_set_image(image);
++ imlib_context_set_display(dpy);
++ imlib_context_set_visual(DefaultVisual(dpy,0));
++ imlib_context_set_drawable(RootWindow(dpy,XScreenNumberOfScreen(scr)));
++ imlib_copy_drawable_to_image(0,0,0,scr->width,scr->height,0,0,1);
++
+ /* check for Xrandr support */
+ rr.active = XRRQueryExtension(dpy, &rr.evbase, &rr.errbase);
+
+--
+2.27.0
+
+
+From 9d89604ac52b0949d047dae2f9b78cb5085ee1a2 Mon Sep 17 00:00:00 2001
+From: Lars Niesen <iah71niesen@gso-koeln.de>
+Date: Wed, 29 Apr 2020 14:15:59 +0200
+Subject: [PATCH 2/8] Added blur function
+
+---
+ config.def.h | 3 +++
+ slock.c | 3 ++-
+ 2 files changed, 5 insertions(+), 1 deletion(-)
+
+diff --git a/config.def.h b/config.def.h
+index c8e52d6..fcc1b39 100644
+--- a/config.def.h
++++ b/config.def.h
+@@ -10,3 +10,6 @@ static const char *colorname[NUMCOLS] = {
+
+ /* treat a cleared input like a wrong password (color) */
+ static const int failonclear = 1;
++
++/*Set Blur radius*/
++static const int blurRadius=5;
+\ No newline at end of file
+diff --git a/slock.c b/slock.c
+index 7c63f34..0f24cd7 100644
+--- a/slock.c
++++ b/slock.c
+@@ -372,7 +372,7 @@ main(int argc, char **argv) {
+ die("slock: setgid: %s\n", strerror(errno));
+ if (setuid(duid) < 0)
+ die("slock: setuid: %s\n", strerror(errno));
+-
++
+ /*Create screenshot Image*/
+ Screen *scr = ScreenOfDisplay(dpy, DefaultScreen(dpy));
+ image = imlib_create_image(scr->width,scr->height);
+@@ -381,6 +381,7 @@ main(int argc, char **argv) {
+ imlib_context_set_visual(DefaultVisual(dpy,0));
+ imlib_context_set_drawable(RootWindow(dpy,XScreenNumberOfScreen(scr)));
+ imlib_copy_drawable_to_image(0,0,0,scr->width,scr->height,0,0,1);
++ imlib_image_blur(blurRadius);
+
+ /* check for Xrandr support */
+ rr.active = XRRQueryExtension(dpy, &rr.evbase, &rr.errbase);
+--
+2.27.0
+
+
+From 069aabd7e30244befd4efe74c85d3468ed076c21 Mon Sep 17 00:00:00 2001
+From: Lars Niesen <iah71niesen@gso-koeln.de>
+Date: Wed, 29 Apr 2020 17:33:09 +0200
+Subject: [PATCH 4/8] added Pixelation
+
+---
+ config.def.h | 3 ++-
+ slock.c | 42 ++++++++++++++++++++++++++++++++++++++++++
+ 2 files changed, 44 insertions(+), 1 deletion(-)
+
+diff --git a/config.def.h b/config.def.h
+index fcc1b39..1c1aef3 100644
+--- a/config.def.h
++++ b/config.def.h
+@@ -12,4 +12,5 @@ static const char *colorname[NUMCOLS] = {
+ static const int failonclear = 1;
+
+ /*Set Blur radius*/
+-static const int blurRadius=5;
+\ No newline at end of file
++static const int blurRadius=0;
++static const int pixelSize=5;
+diff --git a/slock.c b/slock.c
+index 0f24cd7..33ca569 100644
+--- a/slock.c
++++ b/slock.c
+@@ -381,7 +381,49 @@ main(int argc, char **argv) {
+ imlib_context_set_visual(DefaultVisual(dpy,0));
+ imlib_context_set_drawable(RootWindow(dpy,XScreenNumberOfScreen(scr)));
+ imlib_copy_drawable_to_image(0,0,0,scr->width,scr->height,0,0,1);
++
++ /*Blur function*/
+ imlib_image_blur(blurRadius);
++
++
++ /*Pixelation*/
++ int width = scr->width;
++ int height = scr->height;
++
++ for(int y = 0; y < height; y += pixelSize)
++ {
++ for(int x = 0; x < width; x += pixelSize)
++ {
++ int red = 0;
++ int green = 0;
++ int blue = 0;
++
++ Imlib_Color pixel;
++ Imlib_Color* pp;
++ pp = &pixel;
++ for(int j = 0; j < pixelSize && j < height; j++)
++ {
++ for(int i = 0; i < pixelSize && i < width; i++)
++ {
++ imlib_image_query_pixel(x+i,y+j,pp);
++ red += pixel.red;
++ green += pixel.green;
++ blue += pixel.blue;
++ }
++ }
++ red /= (pixelSize*pixelSize);
++ green /= (pixelSize*pixelSize);
++ blue /= (pixelSize*pixelSize);
++ printf("R/G/B: %i/%i/%i\n",red,green,blue);
++ imlib_context_set_color(red,green,blue,pixel.alpha);
++ imlib_image_fill_rectangle(x,y,pixelSize,pixelSize);
++ red = 0;
++ green = 0;
++ blue = 0;
++ }
++ }
++
++
+
+ /* check for Xrandr support */
+ rr.active = XRRQueryExtension(dpy, &rr.evbase, &rr.errbase);
+--
+2.27.0
+
+
+From 109bac015c1c7fbf8440fb42588fe7e0e9cb5e62 Mon Sep 17 00:00:00 2001
+From: Lars Niesen <iah71niesen@gso-koeln.de>
+Date: Wed, 29 Apr 2020 17:42:39 +0200
+Subject: [PATCH 6/8] removed debug printf
+
+---
+ slock.c | 1 -
+ 1 file changed, 1 deletion(-)
+
+diff --git a/slock.c b/slock.c
+index 33ca569..f54c459 100644
+--- a/slock.c
++++ b/slock.c
+@@ -414,7 +414,6 @@ main(int argc, char **argv) {
+ red /= (pixelSize*pixelSize);
+ green /= (pixelSize*pixelSize);
+ blue /= (pixelSize*pixelSize);
+- printf("R/G/B: %i/%i/%i\n",red,green,blue);
+ imlib_context_set_color(red,green,blue,pixel.alpha);
+ imlib_image_fill_rectangle(x,y,pixelSize,pixelSize);
+ red = 0;
+--
+2.27.0
+
+
+From a13a0f4ac86f82e4dff145b7ebd93e52d07492c9 Mon Sep 17 00:00:00 2001
+From: Lars Niesen <iah71niesen@gso-koeln.de>
+Date: Sun, 3 May 2020 18:03:38 +0200
+Subject: [PATCH 7/8] Changed compilerflag to fast
+
+---
+ config.mk | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/config.mk b/config.mk
+index 987819e..d0c2f01 100644
+--- a/config.mk
++++ b/config.mk
+@@ -16,7 +16,7 @@ LIBS = -L/usr/lib -lc -lcrypt -L${X11LIB} -lX11 -lXext -lXrandr -lImlib2
+
+ # flags
+ CPPFLAGS = -DVERSION=\"${VERSION}\" -D_DEFAULT_SOURCE -DHAVE_SHADOW_H
+-CFLAGS = -std=c99 -pedantic -Wall -Os ${INCS} ${CPPFLAGS}
++CFLAGS = -std=c99 -pedantic -Wall -Ofast ${INCS} ${CPPFLAGS}
+ LDFLAGS = -s ${LIBS}
+ COMPATSRC = explicit_bzero.c
+
+--
+2.27.0
+
+
+From 31a7001c4954606c066cc3df4318fafd6d216bcd Mon Sep 17 00:00:00 2001
+From: Lars Niesen <iah71niesen@gso-koeln.de>
+Date: Mon, 4 May 2020 10:00:40 +0200
+Subject: [PATCH 8/8] Added defines for BLUR/PIXELATION to remove from code by
+ compilation
+
+---
+ config.def.h | 11 ++++++++---
+ slock.c | 9 ++++++---
+ 2 files changed, 14 insertions(+), 6 deletions(-)
+
+diff --git a/config.def.h b/config.def.h
+index 1c1aef3..5407953 100644
+--- a/config.def.h
++++ b/config.def.h
+@@ -11,6 +11,11 @@ static const char *colorname[NUMCOLS] = {
+ /* treat a cleared input like a wrong password (color) */
+ static const int failonclear = 1;
+
+-/*Set Blur radius*/
+-static const int blurRadius=0;
+-static const int pixelSize=5;
++/*Enable blur*/
++#define BLUR
++/*Set blur radius*/
++static const int blurRadius=5;
++/*Enable Pixelation*/
++//#define PIXELATION
++/*Set pixelation radius*/
++static const int pixelSize=0;
+diff --git a/slock.c b/slock.c
+index f54c459..1a4d6e3 100644
+--- a/slock.c
++++ b/slock.c
+@@ -381,11 +381,14 @@ main(int argc, char **argv) {
+ imlib_context_set_visual(DefaultVisual(dpy,0));
+ imlib_context_set_drawable(RootWindow(dpy,XScreenNumberOfScreen(scr)));
+ imlib_copy_drawable_to_image(0,0,0,scr->width,scr->height,0,0,1);
+-
++
++#ifdef BLUR
++
+ /*Blur function*/
+ imlib_image_blur(blurRadius);
++#endif // BLUR
+
+-
++#ifdef PIXELATION
+ /*Pixelation*/
+ int width = scr->width;
+ int height = scr->height;
+@@ -423,7 +426,7 @@ main(int argc, char **argv) {
+ }
+
+
+-
++#endif
+ /* check for Xrandr support */
+ rr.active = XRRQueryExtension(dpy, &rr.evbase, &rr.errbase);
+
+--
+2.27.0
+
diff --git a/slock/slock-foreground-and-background-20210611-35633d4.diff b/slock/slock-foreground-and-background-20210611-35633d4.diff
@@ -0,0 +1,340 @@
+From 61f4d247d4060f42cbdbf2771061f0e165ada3a9 Mon Sep 17 00:00:00 2001
+From: KNIX 3 <nki3@protonmail.com>
+Date: Fri, 11 Jun 2021 13:20:54 -0400
+Subject: [PATCH] Foreground and Background
+
+---
+ config.def.h | 28 +++++++++
+ config.mk | 16 ++++--
+ slock.c | 156 ++++++++++++++++++++++++++++++++++++++++++++++++---
+ 3 files changed, 187 insertions(+), 13 deletions(-)
+
+diff --git a/config.def.h b/config.def.h
+index 9855e21..ceceeb0 100644
+--- a/config.def.h
++++ b/config.def.h
+@@ -10,3 +10,31 @@ static const char *colorname[NUMCOLS] = {
+
+ /* treat a cleared input like a wrong password (color) */
+ static const int failonclear = 1;
++
++/* insert grid pattern with scale 1:1, the size can be changed with logosize */
++static const int logosize = 75;
++/* grid width and height for right center alignment */
++static const int logow = 12;
++static const int logoh = 6;
++
++static XRectangle rectangles[9] = {
++ /* x y w h */
++ { 0, 3, 1, 3 },
++ { 1, 3, 2, 1 },
++ { 0, 5, 8, 1 },
++ { 3, 0, 1, 5 },
++ { 5, 3, 1, 2 },
++ { 7, 3, 1, 2 },
++ { 8, 3, 4, 1 },
++ { 9, 4, 1, 2 },
++ { 11, 4, 1, 2 },
++};
++
++/*Enable blur*/
++#define BLUR
++/*Set blur radius*/
++static const int blurRadius=5;
++/*Enable Pixelation*/
++//#define PIXELATION
++/*Set pixelation radius*/
++static const int pixelSize=0;
+diff --git a/config.mk b/config.mk
+index 74429ae..e851ede 100644
+--- a/config.mk
++++ b/config.mk
+@@ -10,13 +10,21 @@ MANPREFIX = ${PREFIX}/share/man
+ X11INC = /usr/X11R6/include
+ X11LIB = /usr/X11R6/lib
+
++# Xinerama
++XINERAMALIBS = -lXinerama
++XINERAMAFLAGS = -DXINERAMA
++
++# freetype
++FREETYPELIBS = -lXft
++FREETYPEINC = /usr/include/freetype2
++
+ # includes and libs
+-INCS = -I. -I/usr/include -I${X11INC}
+-LIBS = -L/usr/lib -lc -lcrypt -L${X11LIB} -lX11 -lXext -lXrandr
++INCS = -I. -I/usr/include -I${X11INC} -I${FREETYPEINC}
++LIBS = -L/usr/lib -lc -lcrypt -L${X11LIB} -lX11 ${XINERAMALIBS} ${FREETYPELIBS} -lXext -lXrandr -lImlib2
+
+ # flags
+-CPPFLAGS = -DVERSION=\"${VERSION}\" -D_DEFAULT_SOURCE -DHAVE_SHADOW_H
+-CFLAGS = -std=c99 -pedantic -Wall -Os ${INCS} ${CPPFLAGS}
++CPPFLAGS = -DVERSION=\"${VERSION}\" -D_DEFAULT_SOURCE -DHAVE_SHADOW_H ${XINERAMAFLAGS}
++CFLAGS = -std=c99 -pedantic -Wall -Ofast ${INCS} ${CPPFLAGS}
+ LDFLAGS = -s ${LIBS}
+ COMPATSRC = explicit_bzero.c
+
+diff --git a/slock.c b/slock.c
+index 5ae738c..efbe833 100644
+--- a/slock.c
++++ b/slock.c
+@@ -1,5 +1,6 @@
+ /* See LICENSE file for license details. */
+-#define _XOPEN_SOURCE 500
++#define _XOPEN_SOURCE 500
++#define LENGTH(X) (sizeof X / sizeof X[0])
+ #if HAVE_SHADOW_H
+ #include <shadow.h>
+ #endif
+@@ -15,9 +16,14 @@
+ #include <unistd.h>
+ #include <sys/types.h>
+ #include <X11/extensions/Xrandr.h>
++#ifdef XINERAMA
++#include <X11/extensions/Xinerama.h>
++#endif
+ #include <X11/keysym.h>
+ #include <X11/Xlib.h>
+ #include <X11/Xutil.h>
++#include <X11/Xft/Xft.h>
++#include <Imlib2.h>
+
+ #include "arg.h"
+ #include "util.h"
+@@ -31,11 +37,19 @@ enum {
+ NUMCOLS
+ };
+
++#include "config.h"
++
+ struct lock {
+ int screen;
+ Window root, win;
+ Pixmap pmap;
++ Pixmap bgmap;
+ unsigned long colors[NUMCOLS];
++ unsigned int x, y;
++ unsigned int xoff, yoff, mw, mh;
++ Drawable drawable;
++ GC gc;
++ XRectangle rectangles[LENGTH(rectangles)];
+ };
+
+ struct xrandr {
+@@ -44,7 +58,7 @@ struct xrandr {
+ int errbase;
+ };
+
+-#include "config.h"
++Imlib_Image image;
+
+ static void
+ die(const char *errstr, ...)
+@@ -124,6 +138,34 @@ gethash(void)
+ return hash;
+ }
+
++static void
++resizerectangles(struct lock *lock)
++{
++ int i;
++
++ for (i = 0; i < LENGTH(rectangles); i++){
++ lock->rectangles[i].x = (rectangles[i].x * logosize)
++ + lock->xoff + ((lock->mw) / 2) - (logow / 2 * logosize);
++ lock->rectangles[i].y = (rectangles[i].y * logosize)
++ + lock->yoff + ((lock->mh) / 2) - (logoh / 2 * logosize);
++ lock->rectangles[i].width = rectangles[i].width * logosize;
++ lock->rectangles[i].height = rectangles[i].height * logosize;
++ }
++}
++
++static void
++drawlogo(Display *dpy, struct lock *lock, int color)
++{
++ /*
++ XSetForeground(dpy, lock->gc, lock->colors[BACKGROUND]);
++ XFillRectangle(dpy, lock->drawable, lock->gc, 0, 0, lock->x, lock->y); */
++ lock->drawable = lock->bgmap;
++ XSetForeground(dpy, lock->gc, lock->colors[color]);
++ XFillRectangles(dpy, lock->drawable, lock->gc, lock->rectangles, LENGTH(rectangles));
++ XCopyArea(dpy, lock->drawable, lock->win, lock->gc, 0, 0, lock->x, lock->y, 0, 0);
++ XSync(dpy, False);
++}
++
+ static void
+ readpw(Display *dpy, struct xrandr *rr, struct lock **locks, int nscreens,
+ const char *hash)
+@@ -190,10 +232,7 @@ readpw(Display *dpy, struct xrandr *rr, struct lock **locks, int nscreens,
+ color = len ? INPUT : ((failure || failonclear) ? FAILED : INIT);
+ if (running && oldc != color) {
+ for (screen = 0; screen < nscreens; screen++) {
+- XSetWindowBackground(dpy,
+- locks[screen]->win,
+- locks[screen]->colors[color]);
+- XClearWindow(dpy, locks[screen]->win);
++ drawlogo(dpy, locks[screen], color);
+ }
+ oldc = color;
+ }
+@@ -228,6 +267,10 @@ lockscreen(Display *dpy, struct xrandr *rr, int screen)
+ XColor color, dummy;
+ XSetWindowAttributes wa;
+ Cursor invisible;
++#ifdef XINERAMA
++ XineramaScreenInfo *info;
++ int n;
++#endif
+
+ if (dpy == NULL || screen < 0 || !(lock = malloc(sizeof(struct lock))))
+ return NULL;
+@@ -235,27 +278,60 @@ lockscreen(Display *dpy, struct xrandr *rr, int screen)
+ lock->screen = screen;
+ lock->root = RootWindow(dpy, lock->screen);
+
++ if(image)
++ {
++ lock->bgmap = XCreatePixmap(dpy, lock->root, DisplayWidth(dpy, lock->screen), DisplayHeight(dpy, lock->screen), DefaultDepth(dpy, lock->screen));
++ imlib_context_set_image(image);
++ imlib_context_set_display(dpy);
++ imlib_context_set_visual(DefaultVisual(dpy, lock->screen));
++ imlib_context_set_colormap(DefaultColormap(dpy, lock->screen));
++ imlib_context_set_drawable(lock->bgmap);
++ imlib_render_image_on_drawable(0, 0);
++ imlib_free_image();
++ }
+ for (i = 0; i < NUMCOLS; i++) {
+ XAllocNamedColor(dpy, DefaultColormap(dpy, lock->screen),
+ colorname[i], &color, &dummy);
+ lock->colors[i] = color.pixel;
+ }
+
++ lock->x = DisplayWidth(dpy, lock->screen);
++ lock->y = DisplayHeight(dpy, lock->screen);
++#ifdef XINERAMA
++ if ((info = XineramaQueryScreens(dpy, &n))) {
++ lock->xoff = info[0].x_org;
++ lock->yoff = info[0].y_org;
++ lock->mw = info[0].width;
++ lock->mh = info[0].height;
++ } else
++#endif
++ {
++ lock->xoff = lock->yoff = 0;
++ lock->mw = lock->x;
++ lock->mh = lock->y;
++ }
++ lock->drawable = XCreatePixmap(dpy, lock->root,
++ lock->x, lock->y, DefaultDepth(dpy, screen));
++ lock->gc = XCreateGC(dpy, lock->root, 0, NULL);
++ XSetLineAttributes(dpy, lock->gc, 1, LineSolid, CapButt, JoinMiter);
++
+ /* init */
+ wa.override_redirect = 1;
+- wa.background_pixel = lock->colors[INIT];
+ lock->win = XCreateWindow(dpy, lock->root, 0, 0,
+- DisplayWidth(dpy, lock->screen),
+- DisplayHeight(dpy, lock->screen),
++ lock->x, lock->y,
+ 0, DefaultDepth(dpy, lock->screen),
+ CopyFromParent,
+ DefaultVisual(dpy, lock->screen),
+ CWOverrideRedirect | CWBackPixel, &wa);
++ if(lock->bgmap)
++ XSetWindowBackgroundPixmap(dpy, lock->win, lock->bgmap);
+ lock->pmap = XCreateBitmapFromData(dpy, lock->win, curs, 8, 8);
+ invisible = XCreatePixmapCursor(dpy, lock->pmap, lock->pmap,
+ &color, &color, 0, 0);
+ XDefineCursor(dpy, lock->win, invisible);
+
++ resizerectangles(lock);
++
+ /* Try to grab mouse pointer *and* keyboard for 600ms, else fail the lock */
+ for (i = 0, ptgrab = kbgrab = -1; i < 6; i++) {
+ if (ptgrab != GrabSuccess) {
+@@ -276,6 +352,7 @@ lockscreen(Display *dpy, struct xrandr *rr, int screen)
+ XRRSelectInput(dpy, lock->win, RRScreenChangeNotifyMask);
+
+ XSelectInput(dpy, lock->root, SubstructureNotifyMask);
++ drawlogo(dpy, lock, INIT);
+ return lock;
+ }
+
+@@ -355,6 +432,60 @@ main(int argc, char **argv) {
+ if (setuid(duid) < 0)
+ die("slock: setuid: %s\n", strerror(errno));
+
++ /*Create screenshot Image*/
++ Screen *scr = ScreenOfDisplay(dpy, DefaultScreen(dpy));
++ image = imlib_create_image(scr->width,scr->height);
++ imlib_context_set_image(image);
++ imlib_context_set_display(dpy);
++ imlib_context_set_visual(DefaultVisual(dpy,0));
++ imlib_context_set_drawable(RootWindow(dpy,XScreenNumberOfScreen(scr)));
++ imlib_copy_drawable_to_image(0,0,0,scr->width,scr->height,0,0,1);
++
++#ifdef BLUR
++
++ /*Blur function*/
++ imlib_image_blur(blurRadius);
++#endif // BLUR
++
++#ifdef PIXELATION
++ /*Pixelation*/
++ int width = scr->width;
++ int height = scr->height;
++
++ for(int y = 0; y < height; y += pixelSize)
++ {
++ for(int x = 0; x < width; x += pixelSize)
++ {
++ int red = 0;
++ int green = 0;
++ int blue = 0;
++
++ Imlib_Color pixel;
++ Imlib_Color* pp;
++ pp = &pixel;
++ for(int j = 0; j < pixelSize && j < height; j++)
++ {
++ for(int i = 0; i < pixelSize && i < width; i++)
++ {
++ imlib_image_query_pixel(x+i,y+j,pp);
++ red += pixel.red;
++ green += pixel.green;
++ blue += pixel.blue;
++ }
++ }
++ red /= (pixelSize*pixelSize);
++ green /= (pixelSize*pixelSize);
++ blue /= (pixelSize*pixelSize);
++ imlib_context_set_color(red,green,blue,pixel.alpha);
++ imlib_image_fill_rectangle(x,y,pixelSize,pixelSize);
++ red = 0;
++ green = 0;
++ blue = 0;
++ }
++ }
++
++
++#endif
+ /* check for Xrandr support */
+ rr.active = XRRQueryExtension(dpy, &rr.evbase, &rr.errbase);
+
+@@ -391,5 +522,12 @@ main(int argc, char **argv) {
+ /* everything is now blank. Wait for the correct password */
+ readpw(dpy, &rr, locks, nscreens, hash);
+
++ for (nlocks = 0, s = 0; s < nscreens; s++) {
++ XFreePixmap(dpy, locks[s]->drawable);
++ XFreeGC(dpy, locks[s]->gc);
++ }
++
++ XSync(dpy, 0);
++ XCloseDisplay(dpy);
+ return 0;
+ }
+--
+2.31.1
+
diff --git a/slock/slock.1 b/slock/slock.1
@@ -0,0 +1,39 @@
+.Dd 2016-08-23
+.Dt SLOCK 1
+.Sh NAME
+.Nm slock
+.Nd simple X screen locker
+.Sh SYNOPSIS
+.Nm
+.Op Fl v
+.Op Ar cmd Op Ar arg ...
+.Sh DESCRIPTION
+.Nm
+is a simple X screen locker. If provided,
+.Ar cmd Op Ar arg ...
+is executed after the screen has been locked.
+.Sh OPTIONS
+.Bl -tag -width Ds
+.It Fl v
+Print version information to stdout and exit.
+.El
+.Sh SECURITY CONSIDERATIONS
+To make sure a locked screen can not be bypassed by switching VTs
+or killing the X server with Ctrl+Alt+Backspace, it is recommended
+to disable both in
+.Xr xorg.conf 5
+for maximum security:
+.Bd -literal -offset left
+Section "ServerFlags"
+ Option "DontVTSwitch" "True"
+ Option "DontZap" "True"
+EndSection
+.Ed
+.Sh EXAMPLES
+$
+.Nm
+/usr/sbin/s2ram
+.Sh CUSTOMIZATION
+.Nm
+can be customized by creating a custom config.h from config.def.h and
+(re)compiling the source code. This keeps it fast, secure and simple.
diff --git a/slock/slock.c b/slock/slock.c
@@ -0,0 +1,467 @@
+/* See LICENSE file for license details. */
+#define _XOPEN_SOURCE 500
+#if HAVE_SHADOW_H
+#include <shadow.h>
+#endif
+
+#include <ctype.h>
+#include <errno.h>
+#include <grp.h>
+#include <pwd.h>
+#include <stdarg.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <X11/extensions/Xrandr.h>
+#include <X11/keysym.h>
+#include <X11/Xlib.h>
+#include <X11/Xutil.h>
+#include <Imlib2.h>
+
+#include "arg.h"
+#include "util.h"
+
+char *argv0;
+
+enum {
+ INIT,
+ INPUT,
+ FAILED,
+ NUMCOLS
+};
+
+struct lock {
+ int screen;
+ Window root, win;
+ Pixmap pmap;
+ Pixmap bgmap;
+ unsigned long colors[NUMCOLS];
+};
+
+struct xrandr {
+ int active;
+ int evbase;
+ int errbase;
+};
+
+#include "config.h"
+
+Imlib_Image image;
+
+static void
+die(const char *errstr, ...)
+{
+ va_list ap;
+
+ va_start(ap, errstr);
+ vfprintf(stderr, errstr, ap);
+ va_end(ap);
+ exit(1);
+}
+
+#ifdef __linux__
+#include <fcntl.h>
+#include <linux/oom.h>
+
+static void
+dontkillme(void)
+{
+ FILE *f;
+ const char oomfile[] = "/proc/self/oom_score_adj";
+
+ if (!(f = fopen(oomfile, "w"))) {
+ if (errno == ENOENT)
+ return;
+ die("slock: fopen %s: %s\n", oomfile, strerror(errno));
+ }
+ fprintf(f, "%d", OOM_SCORE_ADJ_MIN);
+ if (fclose(f)) {
+ if (errno == EACCES)
+ die("slock: unable to disable OOM killer. "
+ "Make sure to suid or sgid slock.\n");
+ else
+ die("slock: fclose %s: %s\n", oomfile, strerror(errno));
+ }
+}
+#endif
+
+static const char *
+gethash(void)
+{
+ const char *hash;
+ struct passwd *pw;
+
+ /* Check if the current user has a password entry */
+ errno = 0;
+ if (!(pw = getpwuid(getuid()))) {
+ if (errno)
+ die("slock: getpwuid: %s\n", strerror(errno));
+ else
+ die("slock: cannot retrieve password entry\n");
+ }
+ hash = pw->pw_passwd;
+
+#if HAVE_SHADOW_H
+ if (!strcmp(hash, "x")) {
+ struct spwd *sp;
+ if (!(sp = getspnam(pw->pw_name)))
+ die("slock: getspnam: cannot retrieve shadow entry. "
+ "Make sure to suid or sgid slock.\n");
+ hash = sp->sp_pwdp;
+ }
+#else
+ if (!strcmp(hash, "*")) {
+#ifdef __OpenBSD__
+ if (!(pw = getpwuid_shadow(getuid())))
+ die("slock: getpwnam_shadow: cannot retrieve shadow entry. "
+ "Make sure to suid or sgid slock.\n");
+ hash = pw->pw_passwd;
+#else
+ die("slock: getpwuid: cannot retrieve shadow entry. "
+ "Make sure to suid or sgid slock.\n");
+#endif /* __OpenBSD__ */
+ }
+#endif /* HAVE_SHADOW_H */
+
+ return hash;
+}
+
+static void
+readpw(Display *dpy, struct xrandr *rr, struct lock **locks, int nscreens,
+ const char *hash)
+{
+ XRRScreenChangeNotifyEvent *rre;
+ char buf[32], passwd[256], *inputhash;
+ int num, screen, running, failure, oldc;
+ unsigned int len, color;
+ KeySym ksym;
+ XEvent ev;
+
+ len = 0;
+ running = 1;
+ failure = 0;
+ oldc = INIT;
+
+ while (running && !XNextEvent(dpy, &ev)) {
+ if (ev.type == KeyPress) {
+ explicit_bzero(&buf, sizeof(buf));
+ num = XLookupString(&ev.xkey, buf, sizeof(buf), &ksym, 0);
+ if (IsKeypadKey(ksym)) {
+ if (ksym == XK_KP_Enter)
+ ksym = XK_Return;
+ else if (ksym >= XK_KP_0 && ksym <= XK_KP_9)
+ ksym = (ksym - XK_KP_0) + XK_0;
+ }
+ if (IsFunctionKey(ksym) ||
+ IsKeypadKey(ksym) ||
+ IsMiscFunctionKey(ksym) ||
+ IsPFKey(ksym) ||
+ IsPrivateKeypadKey(ksym))
+ continue;
+ switch (ksym) {
+ case XK_Return:
+ passwd[len] = '\0';
+ errno = 0;
+ if (!(inputhash = crypt(passwd, hash)))
+ fprintf(stderr, "slock: crypt: %s\n", strerror(errno));
+ else
+ running = !!strcmp(inputhash, hash);
+ if (running) {
+ XBell(dpy, 100);
+ failure = 1;
+ }
+ explicit_bzero(&passwd, sizeof(passwd));
+ len = 0;
+ break;
+ case XK_Escape:
+ explicit_bzero(&passwd, sizeof(passwd));
+ len = 0;
+ break;
+ case XK_BackSpace:
+ if (len)
+ passwd[--len] = '\0';
+ break;
+ default:
+ if (num && !iscntrl((int)buf[0]) &&
+ (len + num < sizeof(passwd))) {
+ memcpy(passwd + len, buf, num);
+ len += num;
+ }
+ break;
+ }
+ color = len ? INPUT : ((failure || failonclear) ? FAILED : INIT);
+ if (running && oldc != color) {
+ for (screen = 0; screen < nscreens; screen++) {
+ if(locks[screen]->bgmap)
+ XSetWindowBackgroundPixmap(dpy, locks[screen]->win, locks[screen]->bgmap);
+ else
+ XSetWindowBackground(dpy, locks[screen]->win, locks[screen]->colors[0]);
+ XClearWindow(dpy, locks[screen]->win);
+ }
+ oldc = color;
+ }
+ } else if (rr->active && ev.type == rr->evbase + RRScreenChangeNotify) {
+ rre = (XRRScreenChangeNotifyEvent*)&ev;
+ for (screen = 0; screen < nscreens; screen++) {
+ if (locks[screen]->win == rre->window) {
+ if (rre->rotation == RR_Rotate_90 ||
+ rre->rotation == RR_Rotate_270)
+ XResizeWindow(dpy, locks[screen]->win,
+ rre->height, rre->width);
+ else
+ XResizeWindow(dpy, locks[screen]->win,
+ rre->width, rre->height);
+ XClearWindow(dpy, locks[screen]->win);
+ break;
+ }
+ }
+ } else {
+ for (screen = 0; screen < nscreens; screen++)
+ XRaiseWindow(dpy, locks[screen]->win);
+ }
+ }
+}
+
+static struct lock *
+lockscreen(Display *dpy, struct xrandr *rr, int screen)
+{
+ char curs[] = {0, 0, 0, 0, 0, 0, 0, 0};
+ int i, ptgrab, kbgrab;
+ struct lock *lock;
+ XColor color, dummy;
+ XSetWindowAttributes wa;
+ Cursor invisible;
+
+ if (dpy == NULL || screen < 0 || !(lock = malloc(sizeof(struct lock))))
+ return NULL;
+
+ lock->screen = screen;
+ lock->root = RootWindow(dpy, lock->screen);
+
+ if(image)
+ {
+ lock->bgmap = XCreatePixmap(dpy, lock->root, DisplayWidth(dpy, lock->screen), DisplayHeight(dpy, lock->screen), DefaultDepth(dpy, lock->screen));
+ imlib_context_set_image(image);
+ imlib_context_set_display(dpy);
+ imlib_context_set_visual(DefaultVisual(dpy, lock->screen));
+ imlib_context_set_colormap(DefaultColormap(dpy, lock->screen));
+ imlib_context_set_drawable(lock->bgmap);
+ imlib_render_image_on_drawable(0, 0);
+ imlib_free_image();
+ }
+ for (i = 0; i < NUMCOLS; i++) {
+ XAllocNamedColor(dpy, DefaultColormap(dpy, lock->screen),
+ colorname[i], &color, &dummy);
+ lock->colors[i] = color.pixel;
+ }
+
+ /* init */
+ wa.override_redirect = 1;
+ wa.background_pixel = lock->colors[INIT];
+ lock->win = XCreateWindow(dpy, lock->root, 0, 0,
+ DisplayWidth(dpy, lock->screen),
+ DisplayHeight(dpy, lock->screen),
+ 0, DefaultDepth(dpy, lock->screen),
+ CopyFromParent,
+ DefaultVisual(dpy, lock->screen),
+ CWOverrideRedirect | CWBackPixel, &wa);
+ if(lock->bgmap)
+ XSetWindowBackgroundPixmap(dpy, lock->win, lock->bgmap);
+ lock->pmap = XCreateBitmapFromData(dpy, lock->win, curs, 8, 8);
+ invisible = XCreatePixmapCursor(dpy, lock->pmap, lock->pmap,
+ &color, &color, 0, 0);
+ XDefineCursor(dpy, lock->win, invisible);
+
+ /* Try to grab mouse pointer *and* keyboard for 600ms, else fail the lock */
+ for (i = 0, ptgrab = kbgrab = -1; i < 6; i++) {
+ if (ptgrab != GrabSuccess) {
+ ptgrab = XGrabPointer(dpy, lock->root, False,
+ ButtonPressMask | ButtonReleaseMask |
+ PointerMotionMask, GrabModeAsync,
+ GrabModeAsync, None, invisible, CurrentTime);
+ }
+ if (kbgrab != GrabSuccess) {
+ kbgrab = XGrabKeyboard(dpy, lock->root, True,
+ GrabModeAsync, GrabModeAsync, CurrentTime);
+ }
+
+ /* input is grabbed: we can lock the screen */
+ if (ptgrab == GrabSuccess && kbgrab == GrabSuccess) {
+ XMapRaised(dpy, lock->win);
+ if (rr->active)
+ XRRSelectInput(dpy, lock->win, RRScreenChangeNotifyMask);
+
+ XSelectInput(dpy, lock->root, SubstructureNotifyMask);
+ return lock;
+ }
+
+ /* retry on AlreadyGrabbed but fail on other errors */
+ if ((ptgrab != AlreadyGrabbed && ptgrab != GrabSuccess) ||
+ (kbgrab != AlreadyGrabbed && kbgrab != GrabSuccess))
+ break;
+
+ usleep(100000);
+ }
+
+ /* we couldn't grab all input: fail out */
+ if (ptgrab != GrabSuccess)
+ fprintf(stderr, "slock: unable to grab mouse pointer for screen %d\n",
+ screen);
+ if (kbgrab != GrabSuccess)
+ fprintf(stderr, "slock: unable to grab keyboard for screen %d\n",
+ screen);
+ return NULL;
+}
+
+static void
+usage(void)
+{
+ die("usage: slock [-v] [cmd [arg ...]]\n");
+}
+
+int
+main(int argc, char **argv) {
+ struct xrandr rr;
+ struct lock **locks;
+ struct passwd *pwd;
+ struct group *grp;
+ uid_t duid;
+ gid_t dgid;
+ const char *hash;
+ Display *dpy;
+ int s, nlocks, nscreens;
+
+ ARGBEGIN {
+ case 'v':
+ fprintf(stderr, "slock-"VERSION"\n");
+ return 0;
+ default:
+ usage();
+ } ARGEND
+
+ /* validate drop-user and -group */
+ errno = 0;
+ if (!(pwd = getpwnam(user)))
+ die("slock: getpwnam %s: %s\n", user,
+ errno ? strerror(errno) : "user entry not found");
+ duid = pwd->pw_uid;
+ errno = 0;
+ if (!(grp = getgrnam(group)))
+ die("slock: getgrnam %s: %s\n", group,
+ errno ? strerror(errno) : "group entry not found");
+ dgid = grp->gr_gid;
+
+#ifdef __linux__
+ dontkillme();
+#endif
+
+ hash = gethash();
+ errno = 0;
+ if (!crypt("", hash))
+ die("slock: crypt: %s\n", strerror(errno));
+
+ if (!(dpy = XOpenDisplay(NULL)))
+ die("slock: cannot open display\n");
+
+ /* drop privileges */
+ if (setgroups(0, NULL) < 0)
+ die("slock: setgroups: %s\n", strerror(errno));
+ if (setgid(dgid) < 0)
+ die("slock: setgid: %s\n", strerror(errno));
+ if (setuid(duid) < 0)
+ die("slock: setuid: %s\n", strerror(errno));
+
+ /*Create screenshot Image*/
+ Screen *scr = ScreenOfDisplay(dpy, DefaultScreen(dpy));
+ image = imlib_create_image(scr->width,scr->height);
+ imlib_context_set_image(image);
+ imlib_context_set_display(dpy);
+ imlib_context_set_visual(DefaultVisual(dpy,0));
+ imlib_context_set_drawable(RootWindow(dpy,XScreenNumberOfScreen(scr)));
+ imlib_copy_drawable_to_image(0,0,0,scr->width,scr->height,0,0,1);
+
+#ifdef BLUR
+
+ /*Blur function*/
+ imlib_image_blur(blurRadius);
+#endif // BLUR
+
+#ifdef PIXELATION
+ /*Pixelation*/
+ int width = scr->width;
+ int height = scr->height;
+
+ for(int y = 0; y < height; y += pixelSize)
+ {
+ for(int x = 0; x < width; x += pixelSize)
+ {
+ int red = 0;
+ int green = 0;
+ int blue = 0;
+
+ Imlib_Color pixel;
+ Imlib_Color* pp;
+ pp = &pixel;
+ for(int j = 0; j < pixelSize && j < height; j++)
+ {
+ for(int i = 0; i < pixelSize && i < width; i++)
+ {
+ imlib_image_query_pixel(x+i,y+j,pp);
+ red += pixel.red;
+ green += pixel.green;
+ blue += pixel.blue;
+ }
+ }
+ red /= (pixelSize*pixelSize);
+ green /= (pixelSize*pixelSize);
+ blue /= (pixelSize*pixelSize);
+ imlib_context_set_color(red,green,blue,pixel.alpha);
+ imlib_image_fill_rectangle(x,y,pixelSize,pixelSize);
+ red = 0;
+ green = 0;
+ blue = 0;
+ }
+ }
+
+
+#endif
+ /* check for Xrandr support */
+ rr.active = XRRQueryExtension(dpy, &rr.evbase, &rr.errbase);
+
+ /* get number of screens in display "dpy" and blank them */
+ nscreens = ScreenCount(dpy);
+ if (!(locks = calloc(nscreens, sizeof(struct lock *))))
+ die("slock: out of memory\n");
+ for (nlocks = 0, s = 0; s < nscreens; s++) {
+ if ((locks[s] = lockscreen(dpy, &rr, s)) != NULL)
+ nlocks++;
+ else
+ break;
+ }
+ XSync(dpy, 0);
+
+ /* did we manage to lock everything? */
+ if (nlocks != nscreens)
+ return 1;
+
+ /* run post-lock command */
+ if (argc > 0) {
+ switch (fork()) {
+ case -1:
+ die("slock: fork failed: %s\n", strerror(errno));
+ case 0:
+ if (close(ConnectionNumber(dpy)) < 0)
+ die("slock: close: %s\n", strerror(errno));
+ execvp(argv[0], argv);
+ fprintf(stderr, "slock: execvp %s: %s\n", argv[0], strerror(errno));
+ _exit(1);
+ }
+ }
+
+ /* everything is now blank. Wait for the correct password */
+ readpw(dpy, &rr, locks, nscreens, hash);
+
+ return 0;
+}
diff --git a/slock/slock.o b/slock/slock.o
Binary files differ.
diff --git a/slock/util.h b/slock/util.h
@@ -0,0 +1,2 @@
+#undef explicit_bzero
+void explicit_bzero(void *, size_t);
diff --git a/st/FAQ b/st/FAQ
@@ -0,0 +1,253 @@
+## Why does st not handle utmp entries?
+
+Use the excellent tool of [utmp](https://git.suckless.org/utmp/) for this task.
+
+
+## Some _random program_ complains that st is unknown/not recognised/unsupported/whatever!
+
+It means that st doesn’t have any terminfo entry on your system. Chances are
+you did not `make install`. If you just want to test it without installing it,
+you can manually run `tic -sx st.info`.
+
+
+## Nothing works, and nothing is said about an unknown terminal!
+
+* Some programs just assume they’re running in xterm i.e. they don’t rely on
+ terminfo. What you see is the current state of the “xterm compliance”.
+* Some programs don’t complain about the lacking st description and default to
+ another terminal. In that case see the question about terminfo.
+
+
+## How do I scroll back up?
+
+* Using a terminal multiplexer.
+ * `st -e tmux` using C-b [
+ * `st -e screen` using C-a ESC
+* Using the excellent tool of [scroll](https://git.suckless.org/scroll/).
+* Using the scrollback [patch](https://st.suckless.org/patches/scrollback/).
+
+
+## I would like to have utmp and/or scroll functionality by default
+
+You can add the absolute path of both programs in your config.h file. You only
+have to modify the value of utmp and scroll variables.
+
+
+## Why doesn't the Del key work in some programs?
+
+Taken from the terminfo manpage:
+
+ If the terminal has a keypad that transmits codes when the keys
+ are pressed, this information can be given. Note that it is not
+ possible to handle terminals where the keypad only works in
+ local (this applies, for example, to the unshifted HP 2621 keys).
+ If the keypad can be set to transmit or not transmit, give these
+ codes as smkx and rmkx. Otherwise the keypad is assumed to
+ always transmit.
+
+In the st case smkx=E[?1hE= and rmkx=E[?1lE>, so it is mandatory that
+applications which want to test against keypad keys send these
+sequences.
+
+But buggy applications (like bash and irssi, for example) don't do this. A fast
+solution for them is to use the following command:
+
+ $ printf '\033[?1h\033=' >/dev/tty
+
+or
+ $ tput smkx
+
+In the case of bash, readline is used. Readline has a different note in its
+manpage about this issue:
+
+ enable-keypad (Off)
+ When set to On, readline will try to enable the
+ application keypad when it is called. Some systems
+ need this to enable arrow keys.
+
+Adding this option to your .inputrc will fix the keypad problem for all
+applications using readline.
+
+If you are using zsh, then read the zsh FAQ
+<http://zsh.sourceforge.net/FAQ/zshfaq03.html#l25>:
+
+ It should be noted that the O / [ confusion can occur with other keys
+ such as Home and End. Some systems let you query the key sequences
+ sent by these keys from the system's terminal database, terminfo.
+ Unfortunately, the key sequences given there typically apply to the
+ mode that is not the one zsh uses by default (it's the "application"
+ mode rather than the "raw" mode). Explaining the use of terminfo is
+ outside of the scope of this FAQ, but if you wish to use the key
+ sequences given there you can tell the line editor to turn on
+ "application" mode when it starts and turn it off when it stops:
+
+ function zle-line-init () { echoti smkx }
+ function zle-line-finish () { echoti rmkx }
+ zle -N zle-line-init
+ zle -N zle-line-finish
+
+Putting these lines into your .zshrc will fix the problems.
+
+
+## How can I use meta in 8bit mode?
+
+St supports meta in 8bit mode, but the default terminfo entry doesn't
+use this capability. If you want it, you have to use the 'st-meta' value
+in TERM.
+
+
+## I cannot compile st in OpenBSD
+
+OpenBSD lacks librt, despite it being mandatory in POSIX
+<http://pubs.opengroup.org/onlinepubs/9699919799/utilities/c99.html#tag_20_11_13>.
+If you want to compile st for OpenBSD you have to remove -lrt from config.mk, and
+st will compile without any loss of functionality, because all the functions are
+included in libc on this platform.
+
+
+## The Backspace Case
+
+St is emulating the Linux way of handling backspace being delete and delete being
+backspace.
+
+This is an issue that was discussed in suckless mailing list
+<https://lists.suckless.org/dev/1404/20697.html>. Here is why some old grumpy
+terminal users wants its backspace to be how he feels it:
+
+ Well, I am going to comment why I want to change the behaviour
+ of this key. When ASCII was defined in 1968, communication
+ with computers was done using punched cards, or hardcopy
+ terminals (basically a typewriter machine connected with the
+ computer using a serial port). ASCII defines DELETE as 7F,
+ because, in punched-card terms, it means all the holes of the
+ card punched; it is thus a kind of 'physical delete'. In the
+ same way, the BACKSPACE key was a non-destructive backspace,
+ as on a typewriter. So, if you wanted to delete a character,
+ you had to BACKSPACE and then DELETE. Another use of BACKSPACE
+ was to type accented characters, for example 'a BACKSPACE `'.
+ The VT100 had no BACKSPACE key; it was generated using the
+ CONTROL key as another control character (CONTROL key sets to
+ 0 b7 b6 b5, so it converts H (code 0x48) into BACKSPACE (code
+ 0x08)), but it had a DELETE key in a similar position where
+ the BACKSPACE key is located today on common PC keyboards.
+ All the terminal emulators emulated the difference between
+ these keys correctly: the backspace key generated a BACKSPACE
+ (^H) and delete key generated a DELETE (^?).
+
+ But a problem arose when Linus Torvalds wrote Linux. Unlike
+ earlier terminals, the Linux virtual terminal (the terminal
+ emulator integrated in the kernel) returned a DELETE when
+ backspace was pressed, due to the VT100 having a DELETE key in
+ the same position. This created a lot of problems (see [1]
+ and [2]). Since Linux has become the king, a lot of terminal
+ emulators today generate a DELETE when the backspace key is
+ pressed in order to avoid problems with Linux. The result is
+ that the only way of generating a BACKSPACE on these systems
+ is by using CONTROL + H. (I also think that emacs had an
+ important point here because the CONTROL + H prefix is used
+ in emacs in some commands (help commands).)
+
+ From point of view of the kernel, you can change the key
+ for deleting a previous character with stty erase. When you
+ connect a real terminal into a machine you describe the type
+ of terminal, so getty configures the correct value of stty
+ erase for this terminal. In the case of terminal emulators,
+ however, you don't have any getty that can set the correct
+ value of stty erase, so you always get the default value.
+ For this reason, it is necessary to add 'stty erase ^H' to your
+ profile if you have changed the value of the backspace key.
+ Of course, another solution is for st itself to modify the
+ value of stty erase. I usually have the inverse problem:
+ when I connect to non-Unix machines, I have to press CONTROL +
+ h to get a BACKSPACE. The inverse problem occurs when a user
+ connects to my Unix machines from a different system with a
+ correct backspace key.
+
+ [1] http://www.ibb.net/~anne/keyboard.html
+ [2] http://www.tldp.org/HOWTO/Keyboard-and-Console-HOWTO-5.html
+
+
+## But I really want the old grumpy behaviour of my terminal
+
+Apply [1].
+
+[1] https://st.suckless.org/patches/delkey
+
+
+## Why do images not work in st using the w3m image hack?
+
+w3mimg uses a hack that draws an image on top of the terminal emulator Drawable
+window. The hack relies on the terminal to use a single buffer to draw its
+contents directly.
+
+st uses double-buffered drawing so the image is quickly replaced and may show a
+short flicker effect.
+
+Below is a patch example to change st double-buffering to a single Drawable
+buffer.
+
+diff --git a/x.c b/x.c
+--- a/x.c
++++ b/x.c
+@@ -732,10 +732,6 @@ xresize(int col, int row)
+ win.tw = col * win.cw;
+ win.th = row * win.ch;
+
+- XFreePixmap(xw.dpy, xw.buf);
+- xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h,
+- DefaultDepth(xw.dpy, xw.scr));
+- XftDrawChange(xw.draw, xw.buf);
+ xclear(0, 0, win.w, win.h);
+
+ /* resize to new width */
+@@ -1148,8 +1144,7 @@ xinit(int cols, int rows)
+ gcvalues.graphics_exposures = False;
+ dc.gc = XCreateGC(xw.dpy, parent, GCGraphicsExposures,
+ &gcvalues);
+- xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h,
+- DefaultDepth(xw.dpy, xw.scr));
++ xw.buf = xw.win;
+ XSetForeground(xw.dpy, dc.gc, dc.col[defaultbg].pixel);
+ XFillRectangle(xw.dpy, xw.buf, dc.gc, 0, 0, win.w, win.h);
+
+@@ -1632,8 +1627,6 @@ xdrawline(Line line, int x1, int y1, int x2)
+ void
+ xfinishdraw(void)
+ {
+- XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, 0, 0, win.w,
+- win.h, 0, 0);
+ XSetForeground(xw.dpy, dc.gc,
+ dc.col[IS_SET(MODE_REVERSE)?
+ defaultfg : defaultbg].pixel);
+
+
+## BadLength X error in Xft when trying to render emoji
+
+Xft makes st crash when rendering color emojis with the following error:
+
+"X Error of failed request: BadLength (poly request too large or internal Xlib length error)"
+ Major opcode of failed request: 139 (RENDER)
+ Minor opcode of failed request: 20 (RenderAddGlyphs)
+ Serial number of failed request: 1595
+ Current serial number in output stream: 1818"
+
+This is a known bug in Xft (not st) which happens on some platforms and
+combination of particular fonts and fontconfig settings.
+
+See also:
+https://gitlab.freedesktop.org/xorg/lib/libxft/issues/6
+https://bugs.freedesktop.org/show_bug.cgi?id=107534
+https://bugzilla.redhat.com/show_bug.cgi?id=1498269
+
+The solution is to remove color emoji fonts or disable this in the fontconfig
+XML configuration. As an ugly workaround (which may work only on newer
+fontconfig versions (FC_COLOR)), the following code can be used to mask color
+fonts:
+
+ FcPatternAddBool(fcpattern, FC_COLOR, FcFalse);
+
+Please don't bother reporting this bug to st, but notify the upstream Xft
+developers about fixing this bug.
+
+As of 2022-09-05 this now seems to be finally fixed in libXft 2.3.5:
+https://gitlab.freedesktop.org/xorg/lib/libxft/-/blob/libXft-2.3.5/NEWS
diff --git a/st/LEGACY b/st/LEGACY
@@ -0,0 +1,17 @@
+A STATEMENT ON LEGACY SUPPORT
+
+In the terminal world there is much cruft that comes from old and unsup‐
+ported terminals that inherit incompatible modes and escape sequences
+which noone is able to know, except when he/she comes from that time and
+developed a graphical vt100 emulator at that time.
+
+One goal of st is to only support what is really needed. When you en‐
+counter a sequence which you really need, implement it. But while you
+are at it, do not add the other cruft you might encounter while sneek‐
+ing at other terminal emulators. History has bloated them and there is
+no real evidence that most of the sequences are used today.
+
+
+Christoph Lohmann <20h@r-36.net>
+2012-09-13T07:00:36.081271045+02:00
+
diff --git a/st/LICENSE b/st/LICENSE
@@ -0,0 +1,34 @@
+MIT/X Consortium License
+
+© 2014-2022 Hiltjo Posthuma <hiltjo at codemadness dot org>
+© 2018 Devin J. Pohly <djpohly at gmail dot com>
+© 2014-2017 Quentin Rameau <quinq at fifth dot space>
+© 2009-2012 Aurélien APTEL <aurelien dot aptel at gmail dot com>
+© 2008-2017 Anselm R Garbe <garbeam at gmail dot com>
+© 2012-2017 Roberto E. Vargas Caballero <k0ga at shike2 dot com>
+© 2012-2016 Christoph Lohmann <20h at r-36 dot net>
+© 2013 Eon S. Jeon <esjeon at hyunmu dot am>
+© 2013 Alexander Sedov <alex0player at gmail dot com>
+© 2013 Mark Edgar <medgar123 at gmail dot com>
+© 2013-2014 Eric Pruitt <eric.pruitt at gmail dot com>
+© 2013 Michael Forney <mforney at mforney dot org>
+© 2013-2014 Markus Teich <markus dot teich at stusta dot mhn dot de>
+© 2014-2015 Laslo Hunhold <dev at frign dot de>
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the "Software"),
+to deal in the Software without restriction, including without limitation
+the rights to use, copy, modify, merge, publish, distribute, sublicense,
+and/or sell copies of the Software, and to permit persons to whom the
+Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+DEALINGS IN THE SOFTWARE.
diff --git a/st/Makefile b/st/Makefile
@@ -0,0 +1,57 @@
+# st - simple terminal
+# See LICENSE file for copyright and license details.
+.POSIX:
+
+include config.mk
+
+SRC = st.c x.c rowcolumn_diacritics_helpers.c graphics.c
+OBJ = $(SRC:.c=.o)
+
+all: options st
+
+options:
+ @echo st build options:
+ @echo "CFLAGS = $(STCFLAGS)"
+ @echo "LDFLAGS = $(STLDFLAGS)"
+ @echo "CC = $(CC)"
+
+config.h:
+ cp config.def.h config.h
+
+.c.o:
+ $(CC) $(STCFLAGS) -c $<
+
+st.o: config.h st.h win.h
+x.o: arg.h config.h st.h win.h graphics.h
+
+$(OBJ): config.h config.mk
+
+st: $(OBJ)
+ $(CC) -o $@ $(OBJ) $(STLDFLAGS)
+
+clean:
+ rm -f st $(OBJ) st-$(VERSION).tar.gz
+
+dist: clean
+ mkdir -p st-$(VERSION)
+ cp -R FAQ LEGACY TODO LICENSE Makefile README config.mk\
+ config.def.h st.info st.1 arg.h st.h win.h $(SRC)\
+ st-$(VERSION)
+ tar -cf - st-$(VERSION) | gzip > st-$(VERSION).tar.gz
+ rm -rf st-$(VERSION)
+
+install: st
+ mkdir -p $(DESTDIR)$(PREFIX)/bin
+ cp -f st $(DESTDIR)$(PREFIX)/bin
+ chmod 755 $(DESTDIR)$(PREFIX)/bin/st
+ mkdir -p $(DESTDIR)$(MANPREFIX)/man1
+ sed "s/VERSION/$(VERSION)/g" < st.1 > $(DESTDIR)$(MANPREFIX)/man1/st.1
+ chmod 644 $(DESTDIR)$(MANPREFIX)/man1/st.1
+ tic -sx st.info
+ @echo Please see the README file regarding the terminfo entry of st.
+
+uninstall:
+ rm -f $(DESTDIR)$(PREFIX)/bin/st
+ rm -f $(DESTDIR)$(MANPREFIX)/man1/st.1
+
+.PHONY: all options clean dist install uninstall
diff --git a/st/Makefile.orig b/st/Makefile.orig
@@ -0,0 +1,57 @@
+# st - simple terminal
+# See LICENSE file for copyright and license details.
+.POSIX:
+
+include config.mk
+
+SRC = st.c x.c
+OBJ = $(SRC:.c=.o)
+
+all: options st
+
+options:
+ @echo st build options:
+ @echo "CFLAGS = $(STCFLAGS)"
+ @echo "LDFLAGS = $(STLDFLAGS)"
+ @echo "CC = $(CC)"
+
+config.h:
+ cp config.def.h config.h
+
+.c.o:
+ $(CC) $(STCFLAGS) -c $<
+
+st.o: config.h st.h win.h
+x.o: arg.h config.h st.h win.h
+
+$(OBJ): config.h config.mk
+
+st: $(OBJ)
+ $(CC) -o $@ $(OBJ) $(STLDFLAGS)
+
+clean:
+ rm -f st $(OBJ) st-$(VERSION).tar.gz
+
+dist: clean
+ mkdir -p st-$(VERSION)
+ cp -R FAQ LEGACY TODO LICENSE Makefile README config.mk\
+ config.def.h st.info st.1 arg.h st.h win.h $(SRC)\
+ st-$(VERSION)
+ tar -cf - st-$(VERSION) | gzip > st-$(VERSION).tar.gz
+ rm -rf st-$(VERSION)
+
+install: st
+ mkdir -p $(DESTDIR)$(PREFIX)/bin
+ cp -f st $(DESTDIR)$(PREFIX)/bin
+ chmod 755 $(DESTDIR)$(PREFIX)/bin/st
+ mkdir -p $(DESTDIR)$(MANPREFIX)/man1
+ sed "s/VERSION/$(VERSION)/g" < st.1 > $(DESTDIR)$(MANPREFIX)/man1/st.1
+ chmod 644 $(DESTDIR)$(MANPREFIX)/man1/st.1
+ tic -sx st.info
+ @echo Please see the README file regarding the terminfo entry of st.
+
+uninstall:
+ rm -f $(DESTDIR)$(PREFIX)/bin/st
+ rm -f $(DESTDIR)$(MANPREFIX)/man1/st.1
+
+.PHONY: all options clean dist install uninstall
diff --git a/st/README b/st/README
@@ -0,0 +1,34 @@
+st - simple terminal
+--------------------
+st is a simple terminal emulator for X which sucks less.
+
+
+Requirements
+------------
+In order to build st you need the Xlib header files.
+
+
+Installation
+------------
+Edit config.mk to match your local setup (st is installed into
+the /usr/local namespace by default).
+
+Afterwards enter the following command to build and install st (if
+necessary as root):
+
+ make clean install
+
+
+Running st
+----------
+If you did not install st with make clean install, you must compile
+the st terminfo entry with the following command:
+
+ tic -sx st.info
+
+See the man page for additional details.
+
+Credits
+-------
+Based on Aurélien APTEL <aurelien dot aptel at gmail dot com> bt source code.
+
diff --git a/st/TODO b/st/TODO
@@ -0,0 +1,28 @@
+vt emulation
+------------
+
+* double-height support
+
+code & interface
+----------------
+
+* add a simple way to do multiplexing
+
+drawing
+-------
+* add diacritics support to xdraws()
+ * switch to a suckless font drawing library
+* make the font cache simpler
+* add better support for brightening of the upper colors
+
+bugs
+----
+
+* fix shift up/down (shift selection in emacs)
+* remove DEC test sequence when appropriate
+
+misc
+----
+
+ $ grep -nE 'XXX|TODO' st.c
+
diff --git a/st/arg.h b/st/arg.h
@@ -0,0 +1,50 @@
+/*
+ * Copy me if you can.
+ * by 20h
+ */
+
+#ifndef ARG_H__
+#define ARG_H__
+
+extern char *argv0;
+
+/* use main(int argc, char *argv[]) */
+#define ARGBEGIN for (argv0 = *argv, argv++, argc--;\
+ argv[0] && argv[0][0] == '-'\
+ && argv[0][1];\
+ argc--, argv++) {\
+ char argc_;\
+ char **argv_;\
+ int brk_;\
+ if (argv[0][1] == '-' && argv[0][2] == '\0') {\
+ argv++;\
+ argc--;\
+ break;\
+ }\
+ int i_;\
+ for (i_ = 1, brk_ = 0, argv_ = argv;\
+ argv[0][i_] && !brk_;\
+ i_++) {\
+ if (argv_ != argv)\
+ break;\
+ argc_ = argv[0][i_];\
+ switch (argc_)
+
+#define ARGEND }\
+ }
+
+#define ARGC() argc_
+
+#define EARGF(x) ((argv[0][i_+1] == '\0' && argv[1] == NULL)?\
+ ((x), abort(), (char *)0) :\
+ (brk_ = 1, (argv[0][i_+1] != '\0')?\
+ (&argv[0][i_+1]) :\
+ (argc--, argv++, argv[0])))
+
+#define ARGF() ((argv[0][i_+1] == '\0' && argv[1] == NULL)?\
+ (char *)0 :\
+ (brk_ = 1, (argv[0][i_+1] != '\0')?\
+ (&argv[0][i_+1]) :\
+ (argc--, argv++, argv[0])))
+
+#endif
diff --git a/st/config.def.h b/st/config.def.h
@@ -0,0 +1,512 @@
+/* See LICENSE file for copyright and license details. */
+
+/*
+ * appearance
+ *
+ * font: see http://freedesktop.org/software/fontconfig/fontconfig-user.html
+ */
+static char *font = "Atkinson Hyperlegible Mono:pixelsize=18:antialias=true:autohint=true";
+static int borderpx = 2;
+
+/* How to align the content in the window when the size of the terminal
+ * doesn't perfectly match the size of the window. The values are percentages.
+ * 50 means center, 0 means flush left/top, 100 means flush right/bottom.
+ */
+static int anysize_halign = 50;
+static int anysize_valign = 50;
+
+/*
+ * What program is execed by st depends of these precedence rules:
+ * 1: program passed with -e
+ * 2: scroll and/or utmp
+ * 3: SHELL environment variable
+ * 4: value of shell in /etc/passwd
+ * 5: value of shell in config.h
+ */
+static char *shell = "/bin/sh";
+char *utmp = NULL;
+/* scroll program: to enable use a string like "scroll" */
+char *scroll = NULL;
+char *stty_args = "stty raw pass8 nl -echo -iexten -cstopb 38400";
+
+/* identification sequence returned in DA and DECID */
+/* By default, use the same one as kitty. */
+char *vtiden = "\033[?62c";
+
+/* Kerning / character bounding-box multipliers */
+static float cwscale = 1.0;
+static float chscale = 1.0;
+
+/*
+ * word delimiter string
+ *
+ * More advanced example: L" `'\"()[]{}"
+ */
+wchar_t *worddelimiters = L" ";
+
+/* selection timeouts (in milliseconds) */
+static unsigned int doubleclicktimeout = 300;
+static unsigned int tripleclicktimeout = 600;
+
+/* alt screens */
+int allowaltscreen = 1;
+
+/* allow certain non-interactive (insecure) window operations such as:
+ setting the clipboard text */
+int allowwindowops = 0;
+
+/*
+ * draw latency range in ms - from new content/keypress/etc until drawing.
+ * within this range, st draws when content stops arriving (idle). mostly it's
+ * near minlatency, but it waits longer for slow updates to avoid partial draw.
+ * low minlatency will tear/flicker more, as it can "detect" idle too early.
+ */
+static double minlatency = 8;
+static double maxlatency = 33;
+
+/*
+ * blinking timeout (set to 0 to disable blinking) for the terminal blinking
+ * attribute.
+ */
+static unsigned int blinktimeout = 800;
+
+/*
+ * thickness of underline and bar cursors
+ */
+static unsigned int cursorthickness = 2;
+
+/*
+ * bell volume. It must be a value between -100 and 100. Use 0 for disabling
+ * it
+ */
+static int bellvolume = 0;
+
+/* default TERM value */
+char *termname = "st";
+
+/*
+ * spaces per tab
+ *
+ * When you are changing this value, don't forget to adapt the »it« value in
+ * the st.info and appropriately install the st.info in the environment where
+ * you use this st version.
+ *
+ * it#$tabspaces,
+ *
+ * Secondly make sure your kernel is not expanding tabs. When running `stty
+ * -a` »tab0« should appear. You can tell the terminal to not expand tabs by
+ * running following command:
+ *
+ * stty tabs
+ */
+unsigned int tabspaces = 8;
+
+/* Terminal colors (16 first used in escape sequence) */
+static const char *colorname[] = {
+ /* 8 normal colors */
+ "black",
+ "#BF616A",
+ "#A3BE8C",
+ "#B48EAD",
+ "#88C0D0",
+ "#B48EAD",
+ "#81A1C1",
+ "#D8DEE9", /*#787878*/
+
+ /* 8 bright colors */
+ "#4C566A",
+ "#BF616A",
+ "#A3BE8C",
+ "#ECEFF4",
+ "#5c5cff",
+ "plum",
+ "#88C0D0",
+ "#ECEFF4",
+
+ [255] = 0,
+
+ /* more colors can be added after 255 to use with DefaultXX */
+ "#ECEFF4",
+ "#434C5E",
+ "#E5E9F0", /* default foreground colour */
+ "#020000", /* default background colour old: #121b21, #020000, #2E3440 <- nord, */
+};
+
+
+/*
+ * Default colors (colorname index)
+ * foreground, background, cursor, reverse cursor
+ */
+unsigned int defaultfg = 258;
+unsigned int defaultbg = 259;
+unsigned int defaultcs = 256;
+static unsigned int defaultrcs = 257;
+
+/*
+ * Default shape of cursor
+ * 2: Block ("█")
+ * 4: Underline ("_")
+ * 6: Bar ("|")
+ * 7: Snowman ("☃")
+ */
+static unsigned int cursorshape = 2;
+
+/*
+ * Default columns and rows numbers
+ */
+
+static unsigned int cols = 80;
+static unsigned int rows = 24;
+
+/*
+ * Default colour and shape of the mouse cursor
+ */
+static unsigned int mouseshape = XC_xterm;
+static unsigned int mousefg = 7;
+static unsigned int mousebg = 0;
+
+/*
+ * Color used to display font attributes when fontconfig selected a font which
+ * doesn't match the ones requested.
+ */
+static unsigned int defaultattr = 11;
+
+/*
+ * Graphics configuration
+ */
+
+/// The template for the cache directory.
+const char graphics_cache_dir_template[] = "/tmp/st-images-XXXXXX";
+/// The max size of a single image file, in bytes.
+unsigned graphics_max_single_image_file_size = 20 * 1024 * 1024;
+/// The max size of the cache, in bytes.
+unsigned graphics_total_file_cache_size = 300 * 1024 * 1024;
+/// The max ram size of an image or placement, in bytes.
+unsigned graphics_max_single_image_ram_size = 100 * 1024 * 1024;
+/// The max total size of all images loaded into RAM.
+unsigned graphics_max_total_ram_size = 300 * 1024 * 1024;
+/// The max total number of image placements and images.
+unsigned graphics_max_total_placements = 4096;
+/// The ratio by which limits can be exceeded. This is to reduce the frequency
+/// of image removal.
+double graphics_excess_tolerance_ratio = 0.05;
+/// The minimum delay between redraws caused by animations, in milliseconds.
+unsigned graphics_animation_min_delay = 20;
+
+/*
+ * Force mouse select/shortcuts while mask is active (when MODE_MOUSE is set).
+ * Note that if you want to use ShiftMask with selmasks, set this to an other
+ * modifier, set to 0 to not use it.
+ */
+static uint forcemousemod = ShiftMask;
+
+/* Internal keyboard shortcuts. */
+#define MODKEY Mod1Mask
+#define TERMMOD (ControlMask|ShiftMask)
+
+/*
+ * Internal mouse shortcuts.
+ * Beware that overloading Button1 will disable the selection.
+ */
+static MouseShortcut mshortcuts[] = {
+ /* mask button function argument release */
+ { TERMMOD, Button3, previewimage, {.s = "feh"} },
+ { TERMMOD, Button2, showimageinfo, {}, 1 },
+ { XK_ANY_MOD, Button2, selpaste, {.i = 0}, 1 },
+ { ShiftMask, Button4, ttysend, {.s = "\033[5;2~"} },
+ { XK_ANY_MOD, Button4, ttysend, {.s = "\031"} },
+ { ShiftMask, Button5, ttysend, {.s = "\033[6;2~"} },
+ { XK_ANY_MOD, Button5, ttysend, {.s = "\005"} },
+};
+
+static Shortcut shortcuts[] = {
+ /* mask keysym function argument */
+ { XK_ANY_MOD, XK_Break, sendbreak, {.i = 0} },
+ { ControlMask, XK_Print, toggleprinter, {.i = 0} },
+ { ShiftMask, XK_Print, printscreen, {.i = 0} },
+ { XK_ANY_MOD, XK_Print, printsel, {.i = 0} },
+ { TERMMOD, XK_plus, zoom, {.f = +1} },
+ { TERMMOD, XK_underscore, zoom, {.f = -1} },
+ { TERMMOD, XK_Home, zoomreset, {.f = 0} },
+ { TERMMOD, XK_C, clipcopy, {.i = 0} },
+ { TERMMOD, XK_V, clippaste, {.i = 0} },
+ { TERMMOD, XK_Y, selpaste, {.i = 0} },
+ { ShiftMask, XK_Insert, selpaste, {.i = 0} },
+ { TERMMOD, XK_Num_Lock, numlock, {.i = 0} },
+ { TERMMOD, XK_F1, togglegrdebug, {.i = 0} },
+ { TERMMOD, XK_F6, dumpgrstate, {.i = 0} },
+ { TERMMOD, XK_F7, unloadimages, {.i = 0} },
+ { TERMMOD, XK_F8, toggleimages, {.i = 0} },
+ { TERMMOD, XK_K, kscrollup, {.i = -1} },
+ { TERMMOD, XK_J, kscrolldown, {.i = -1} },
+};
+
+/*
+ * Special keys (change & recompile st.info accordingly)
+ *
+ * Mask value:
+ * * Use XK_ANY_MOD to match the key no matter modifiers state
+ * * Use XK_NO_MOD to match the key alone (no modifiers)
+ * appkey value:
+ * * 0: no value
+ * * > 0: keypad application mode enabled
+ * * = 2: term.numlock = 1
+ * * < 0: keypad application mode disabled
+ * appcursor value:
+ * * 0: no value
+ * * > 0: cursor application mode enabled
+ * * < 0: cursor application mode disabled
+ *
+ * Be careful with the order of the definitions because st searches in
+ * this table sequentially, so any XK_ANY_MOD must be in the last
+ * position for a key.
+ */
+
+/*
+ * If you want keys other than the X11 function keys (0xFD00 - 0xFFFF)
+ * to be mapped below, add them to this array.
+ */
+static KeySym mappedkeys[] = { -1 };
+
+/*
+ * State bits to ignore when matching key or button events. By default,
+ * numlock (Mod2Mask) and keyboard layout (XK_SWITCH_MOD) are ignored.
+ */
+static uint ignoremod = Mod2Mask|XK_SWITCH_MOD;
+
+/*
+ * This is the huge key array which defines all compatibility to the Linux
+ * world. Please decide about changes wisely.
+ */
+static Key key[] = {
+ /* keysym mask string appkey appcursor */
+ { XK_KP_Home, ShiftMask, "\033[2J", 0, -1},
+ { XK_KP_Home, ShiftMask, "\033[1;2H", 0, +1},
+ { XK_KP_Home, XK_ANY_MOD, "\033[H", 0, -1},
+ { XK_KP_Home, XK_ANY_MOD, "\033[1~", 0, +1},
+ { XK_KP_Up, XK_ANY_MOD, "\033Ox", +1, 0},
+ { XK_KP_Up, XK_ANY_MOD, "\033[A", 0, -1},
+ { XK_KP_Up, XK_ANY_MOD, "\033OA", 0, +1},
+ { XK_KP_Down, XK_ANY_MOD, "\033Or", +1, 0},
+ { XK_KP_Down, XK_ANY_MOD, "\033[B", 0, -1},
+ { XK_KP_Down, XK_ANY_MOD, "\033OB", 0, +1},
+ { XK_KP_Left, XK_ANY_MOD, "\033Ot", +1, 0},
+ { XK_KP_Left, XK_ANY_MOD, "\033[D", 0, -1},
+ { XK_KP_Left, XK_ANY_MOD, "\033OD", 0, +1},
+ { XK_KP_Right, XK_ANY_MOD, "\033Ov", +1, 0},
+ { XK_KP_Right, XK_ANY_MOD, "\033[C", 0, -1},
+ { XK_KP_Right, XK_ANY_MOD, "\033OC", 0, +1},
+ { XK_KP_Prior, ShiftMask, "\033[5;2~", 0, 0},
+ { XK_KP_Prior, XK_ANY_MOD, "\033[5~", 0, 0},
+ { XK_KP_Begin, XK_ANY_MOD, "\033[E", 0, 0},
+ { XK_KP_End, ControlMask, "\033[J", -1, 0},
+ { XK_KP_End, ControlMask, "\033[1;5F", +1, 0},
+ { XK_KP_End, ShiftMask, "\033[K", -1, 0},
+ { XK_KP_End, ShiftMask, "\033[1;2F", +1, 0},
+ { XK_KP_End, XK_ANY_MOD, "\033[4~", 0, 0},
+ { XK_KP_Next, ShiftMask, "\033[6;2~", 0, 0},
+ { XK_KP_Next, XK_ANY_MOD, "\033[6~", 0, 0},
+ { XK_KP_Insert, ShiftMask, "\033[2;2~", +1, 0},
+ { XK_KP_Insert, ShiftMask, "\033[4l", -1, 0},
+ { XK_KP_Insert, ControlMask, "\033[L", -1, 0},
+ { XK_KP_Insert, ControlMask, "\033[2;5~", +1, 0},
+ { XK_KP_Insert, XK_ANY_MOD, "\033[4h", -1, 0},
+ { XK_KP_Insert, XK_ANY_MOD, "\033[2~", +1, 0},
+ { XK_KP_Delete, ControlMask, "\033[M", -1, 0},
+ { XK_KP_Delete, ControlMask, "\033[3;5~", +1, 0},
+ { XK_KP_Delete, ShiftMask, "\033[2K", -1, 0},
+ { XK_KP_Delete, ShiftMask, "\033[3;2~", +1, 0},
+ { XK_KP_Delete, XK_ANY_MOD, "\033[P", -1, 0},
+ { XK_KP_Delete, XK_ANY_MOD, "\033[3~", +1, 0},
+ { XK_KP_Multiply, XK_ANY_MOD, "\033Oj", +2, 0},
+ { XK_KP_Add, XK_ANY_MOD, "\033Ok", +2, 0},
+ { XK_KP_Enter, XK_ANY_MOD, "\033OM", +2, 0},
+ { XK_KP_Enter, XK_ANY_MOD, "\r", -1, 0},
+ { XK_KP_Subtract, XK_ANY_MOD, "\033Om", +2, 0},
+ { XK_KP_Decimal, XK_ANY_MOD, "\033On", +2, 0},
+ { XK_KP_Divide, XK_ANY_MOD, "\033Oo", +2, 0},
+ { XK_KP_0, XK_ANY_MOD, "\033Op", +2, 0},
+ { XK_KP_1, XK_ANY_MOD, "\033Oq", +2, 0},
+ { XK_KP_2, XK_ANY_MOD, "\033Or", +2, 0},
+ { XK_KP_3, XK_ANY_MOD, "\033Os", +2, 0},
+ { XK_KP_4, XK_ANY_MOD, "\033Ot", +2, 0},
+ { XK_KP_5, XK_ANY_MOD, "\033Ou", +2, 0},
+ { XK_KP_6, XK_ANY_MOD, "\033Ov", +2, 0},
+ { XK_KP_7, XK_ANY_MOD, "\033Ow", +2, 0},
+ { XK_KP_8, XK_ANY_MOD, "\033Ox", +2, 0},
+ { XK_KP_9, XK_ANY_MOD, "\033Oy", +2, 0},
+ { XK_Up, ShiftMask, "\033[1;2A", 0, 0},
+ { XK_Up, Mod1Mask, "\033[1;3A", 0, 0},
+ { XK_Up, ShiftMask|Mod1Mask,"\033[1;4A", 0, 0},
+ { XK_Up, ControlMask, "\033[1;5A", 0, 0},
+ { XK_Up, ShiftMask|ControlMask,"\033[1;6A", 0, 0},
+ { XK_Up, ControlMask|Mod1Mask,"\033[1;7A", 0, 0},
+ { XK_Up,ShiftMask|ControlMask|Mod1Mask,"\033[1;8A", 0, 0},
+ { XK_Up, XK_ANY_MOD, "\033[A", 0, -1},
+ { XK_Up, XK_ANY_MOD, "\033OA", 0, +1},
+ { XK_Down, ShiftMask, "\033[1;2B", 0, 0},
+ { XK_Down, Mod1Mask, "\033[1;3B", 0, 0},
+ { XK_Down, ShiftMask|Mod1Mask,"\033[1;4B", 0, 0},
+ { XK_Down, ControlMask, "\033[1;5B", 0, 0},
+ { XK_Down, ShiftMask|ControlMask,"\033[1;6B", 0, 0},
+ { XK_Down, ControlMask|Mod1Mask,"\033[1;7B", 0, 0},
+ { XK_Down,ShiftMask|ControlMask|Mod1Mask,"\033[1;8B",0, 0},
+ { XK_Down, XK_ANY_MOD, "\033[B", 0, -1},
+ { XK_Down, XK_ANY_MOD, "\033OB", 0, +1},
+ { XK_Left, ShiftMask, "\033[1;2D", 0, 0},
+ { XK_Left, Mod1Mask, "\033[1;3D", 0, 0},
+ { XK_Left, ShiftMask|Mod1Mask,"\033[1;4D", 0, 0},
+ { XK_Left, ControlMask, "\033[1;5D", 0, 0},
+ { XK_Left, ShiftMask|ControlMask,"\033[1;6D", 0, 0},
+ { XK_Left, ControlMask|Mod1Mask,"\033[1;7D", 0, 0},
+ { XK_Left,ShiftMask|ControlMask|Mod1Mask,"\033[1;8D",0, 0},
+ { XK_Left, XK_ANY_MOD, "\033[D", 0, -1},
+ { XK_Left, XK_ANY_MOD, "\033OD", 0, +1},
+ { XK_Right, ShiftMask, "\033[1;2C", 0, 0},
+ { XK_Right, Mod1Mask, "\033[1;3C", 0, 0},
+ { XK_Right, ShiftMask|Mod1Mask,"\033[1;4C", 0, 0},
+ { XK_Right, ControlMask, "\033[1;5C", 0, 0},
+ { XK_Right, ShiftMask|ControlMask,"\033[1;6C", 0, 0},
+ { XK_Right, ControlMask|Mod1Mask,"\033[1;7C", 0, 0},
+ { XK_Right,ShiftMask|ControlMask|Mod1Mask,"\033[1;8C",0, 0},
+ { XK_Right, XK_ANY_MOD, "\033[C", 0, -1},
+ { XK_Right, XK_ANY_MOD, "\033OC", 0, +1},
+ { XK_ISO_Left_Tab, ShiftMask, "\033[Z", 0, 0},
+ { XK_Return, Mod1Mask, "\033\r", 0, 0},
+ { XK_Return, XK_ANY_MOD, "\r", 0, 0},
+ { XK_Insert, ShiftMask, "\033[4l", -1, 0},
+ { XK_Insert, ShiftMask, "\033[2;2~", +1, 0},
+ { XK_Insert, ControlMask, "\033[L", -1, 0},
+ { XK_Insert, ControlMask, "\033[2;5~", +1, 0},
+ { XK_Insert, XK_ANY_MOD, "\033[4h", -1, 0},
+ { XK_Insert, XK_ANY_MOD, "\033[2~", +1, 0},
+ { XK_Delete, ControlMask, "\033[M", -1, 0},
+ { XK_Delete, ControlMask, "\033[3;5~", +1, 0},
+ { XK_Delete, ShiftMask, "\033[2K", -1, 0},
+ { XK_Delete, ShiftMask, "\033[3;2~", +1, 0},
+ { XK_Delete, XK_ANY_MOD, "\033[P", -1, 0},
+ { XK_Delete, XK_ANY_MOD, "\033[3~", +1, 0},
+ { XK_BackSpace, XK_NO_MOD, "\177", 0, 0},
+ { XK_BackSpace, Mod1Mask, "\033\177", 0, 0},
+ { XK_Home, ShiftMask, "\033[2J", 0, -1},
+ { XK_Home, ShiftMask, "\033[1;2H", 0, +1},
+ { XK_Home, XK_ANY_MOD, "\033[H", 0, -1},
+ { XK_Home, XK_ANY_MOD, "\033[1~", 0, +1},
+ { XK_End, ControlMask, "\033[J", -1, 0},
+ { XK_End, ControlMask, "\033[1;5F", +1, 0},
+ { XK_End, ShiftMask, "\033[K", -1, 0},
+ { XK_End, ShiftMask, "\033[1;2F", +1, 0},
+ { XK_End, XK_ANY_MOD, "\033[4~", 0, 0},
+ { XK_Prior, ControlMask, "\033[5;5~", 0, 0},
+ { XK_Prior, ShiftMask, "\033[5;2~", 0, 0},
+ { XK_Prior, XK_ANY_MOD, "\033[5~", 0, 0},
+ { XK_Next, ControlMask, "\033[6;5~", 0, 0},
+ { XK_Next, ShiftMask, "\033[6;2~", 0, 0},
+ { XK_Next, XK_ANY_MOD, "\033[6~", 0, 0},
+ { XK_F1, XK_NO_MOD, "\033OP" , 0, 0},
+ { XK_F1, /* F13 */ ShiftMask, "\033[1;2P", 0, 0},
+ { XK_F1, /* F25 */ ControlMask, "\033[1;5P", 0, 0},
+ { XK_F1, /* F37 */ Mod4Mask, "\033[1;6P", 0, 0},
+ { XK_F1, /* F49 */ Mod1Mask, "\033[1;3P", 0, 0},
+ { XK_F1, /* F61 */ Mod3Mask, "\033[1;4P", 0, 0},
+ { XK_F2, XK_NO_MOD, "\033OQ" , 0, 0},
+ { XK_F2, /* F14 */ ShiftMask, "\033[1;2Q", 0, 0},
+ { XK_F2, /* F26 */ ControlMask, "\033[1;5Q", 0, 0},
+ { XK_F2, /* F38 */ Mod4Mask, "\033[1;6Q", 0, 0},
+ { XK_F2, /* F50 */ Mod1Mask, "\033[1;3Q", 0, 0},
+ { XK_F2, /* F62 */ Mod3Mask, "\033[1;4Q", 0, 0},
+ { XK_F3, XK_NO_MOD, "\033OR" , 0, 0},
+ { XK_F3, /* F15 */ ShiftMask, "\033[1;2R", 0, 0},
+ { XK_F3, /* F27 */ ControlMask, "\033[1;5R", 0, 0},
+ { XK_F3, /* F39 */ Mod4Mask, "\033[1;6R", 0, 0},
+ { XK_F3, /* F51 */ Mod1Mask, "\033[1;3R", 0, 0},
+ { XK_F3, /* F63 */ Mod3Mask, "\033[1;4R", 0, 0},
+ { XK_F4, XK_NO_MOD, "\033OS" , 0, 0},
+ { XK_F4, /* F16 */ ShiftMask, "\033[1;2S", 0, 0},
+ { XK_F4, /* F28 */ ControlMask, "\033[1;5S", 0, 0},
+ { XK_F4, /* F40 */ Mod4Mask, "\033[1;6S", 0, 0},
+ { XK_F4, /* F52 */ Mod1Mask, "\033[1;3S", 0, 0},
+ { XK_F5, XK_NO_MOD, "\033[15~", 0, 0},
+ { XK_F5, /* F17 */ ShiftMask, "\033[15;2~", 0, 0},
+ { XK_F5, /* F29 */ ControlMask, "\033[15;5~", 0, 0},
+ { XK_F5, /* F41 */ Mod4Mask, "\033[15;6~", 0, 0},
+ { XK_F5, /* F53 */ Mod1Mask, "\033[15;3~", 0, 0},
+ { XK_F6, XK_NO_MOD, "\033[17~", 0, 0},
+ { XK_F6, /* F18 */ ShiftMask, "\033[17;2~", 0, 0},
+ { XK_F6, /* F30 */ ControlMask, "\033[17;5~", 0, 0},
+ { XK_F6, /* F42 */ Mod4Mask, "\033[17;6~", 0, 0},
+ { XK_F6, /* F54 */ Mod1Mask, "\033[17;3~", 0, 0},
+ { XK_F7, XK_NO_MOD, "\033[18~", 0, 0},
+ { XK_F7, /* F19 */ ShiftMask, "\033[18;2~", 0, 0},
+ { XK_F7, /* F31 */ ControlMask, "\033[18;5~", 0, 0},
+ { XK_F7, /* F43 */ Mod4Mask, "\033[18;6~", 0, 0},
+ { XK_F7, /* F55 */ Mod1Mask, "\033[18;3~", 0, 0},
+ { XK_F8, XK_NO_MOD, "\033[19~", 0, 0},
+ { XK_F8, /* F20 */ ShiftMask, "\033[19;2~", 0, 0},
+ { XK_F8, /* F32 */ ControlMask, "\033[19;5~", 0, 0},
+ { XK_F8, /* F44 */ Mod4Mask, "\033[19;6~", 0, 0},
+ { XK_F8, /* F56 */ Mod1Mask, "\033[19;3~", 0, 0},
+ { XK_F9, XK_NO_MOD, "\033[20~", 0, 0},
+ { XK_F9, /* F21 */ ShiftMask, "\033[20;2~", 0, 0},
+ { XK_F9, /* F33 */ ControlMask, "\033[20;5~", 0, 0},
+ { XK_F9, /* F45 */ Mod4Mask, "\033[20;6~", 0, 0},
+ { XK_F9, /* F57 */ Mod1Mask, "\033[20;3~", 0, 0},
+ { XK_F10, XK_NO_MOD, "\033[21~", 0, 0},
+ { XK_F10, /* F22 */ ShiftMask, "\033[21;2~", 0, 0},
+ { XK_F10, /* F34 */ ControlMask, "\033[21;5~", 0, 0},
+ { XK_F10, /* F46 */ Mod4Mask, "\033[21;6~", 0, 0},
+ { XK_F10, /* F58 */ Mod1Mask, "\033[21;3~", 0, 0},
+ { XK_F11, XK_NO_MOD, "\033[23~", 0, 0},
+ { XK_F11, /* F23 */ ShiftMask, "\033[23;2~", 0, 0},
+ { XK_F11, /* F35 */ ControlMask, "\033[23;5~", 0, 0},
+ { XK_F11, /* F47 */ Mod4Mask, "\033[23;6~", 0, 0},
+ { XK_F11, /* F59 */ Mod1Mask, "\033[23;3~", 0, 0},
+ { XK_F12, XK_NO_MOD, "\033[24~", 0, 0},
+ { XK_F12, /* F24 */ ShiftMask, "\033[24;2~", 0, 0},
+ { XK_F12, /* F36 */ ControlMask, "\033[24;5~", 0, 0},
+ { XK_F12, /* F48 */ Mod4Mask, "\033[24;6~", 0, 0},
+ { XK_F12, /* F60 */ Mod1Mask, "\033[24;3~", 0, 0},
+ { XK_F13, XK_NO_MOD, "\033[1;2P", 0, 0},
+ { XK_F14, XK_NO_MOD, "\033[1;2Q", 0, 0},
+ { XK_F15, XK_NO_MOD, "\033[1;2R", 0, 0},
+ { XK_F16, XK_NO_MOD, "\033[1;2S", 0, 0},
+ { XK_F17, XK_NO_MOD, "\033[15;2~", 0, 0},
+ { XK_F18, XK_NO_MOD, "\033[17;2~", 0, 0},
+ { XK_F19, XK_NO_MOD, "\033[18;2~", 0, 0},
+ { XK_F20, XK_NO_MOD, "\033[19;2~", 0, 0},
+ { XK_F21, XK_NO_MOD, "\033[20;2~", 0, 0},
+ { XK_F22, XK_NO_MOD, "\033[21;2~", 0, 0},
+ { XK_F23, XK_NO_MOD, "\033[23;2~", 0, 0},
+ { XK_F24, XK_NO_MOD, "\033[24;2~", 0, 0},
+ { XK_F25, XK_NO_MOD, "\033[1;5P", 0, 0},
+ { XK_F26, XK_NO_MOD, "\033[1;5Q", 0, 0},
+ { XK_F27, XK_NO_MOD, "\033[1;5R", 0, 0},
+ { XK_F28, XK_NO_MOD, "\033[1;5S", 0, 0},
+ { XK_F29, XK_NO_MOD, "\033[15;5~", 0, 0},
+ { XK_F30, XK_NO_MOD, "\033[17;5~", 0, 0},
+ { XK_F31, XK_NO_MOD, "\033[18;5~", 0, 0},
+ { XK_F32, XK_NO_MOD, "\033[19;5~", 0, 0},
+ { XK_F33, XK_NO_MOD, "\033[20;5~", 0, 0},
+ { XK_F34, XK_NO_MOD, "\033[21;5~", 0, 0},
+ { XK_F35, XK_NO_MOD, "\033[23;5~", 0, 0},
+};
+
+/*
+ * Selection types' masks.
+ * Use the same masks as usual.
+ * Button1Mask is always unset, to make masks match between ButtonPress.
+ * ButtonRelease and MotionNotify.
+ * If no match is found, regular selection is used.
+ */
+static uint selmasks[] = {
+ [SEL_RECTANGULAR] = Mod1Mask,
+};
+
+/*
+ * Printable characters in ASCII, used to estimate the advance width
+ * of single wide characters.
+ */
+static char ascii_printable[] =
+ " !\"#$%&'()*+,-./0123456789:;<=>?"
+ "@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_"
+ "`abcdefghijklmnopqrstuvwxyz{|}~";
diff --git a/st/config.def.h.orig b/st/config.def.h.orig
@@ -0,0 +1,476 @@
+/* See LICENSE file for copyright and license details. */
+
+/*
+ * appearance
+ *
+ * font: see http://freedesktop.org/software/fontconfig/fontconfig-user.html
+ */
+static char *font = "Iosevka:pixelsize=18:antialias=true:autohint=true";
+static int borderpx = 2;
+
+/*
+ * What program is execed by st depends of these precedence rules:
+ * 1: program passed with -e
+ * 2: scroll and/or utmp
+ * 3: SHELL environment variable
+ * 4: value of shell in /etc/passwd
+ * 5: value of shell in config.h
+ */
+static char *shell = "/bin/sh";
+char *utmp = NULL;
+/* scroll program: to enable use a string like "scroll" */
+char *scroll = NULL;
+char *stty_args = "stty raw pass8 nl -echo -iexten -cstopb 38400";
+
+/* identification sequence returned in DA and DECID */
+char *vtiden = "\033[?6c";
+
+/* Kerning / character bounding-box multipliers */
+static float cwscale = 1.0;
+static float chscale = 1.0;
+
+/*
+ * word delimiter string
+ *
+ * More advanced example: L" `'\"()[]{}"
+ */
+wchar_t *worddelimiters = L" ";
+
+/* selection timeouts (in milliseconds) */
+static unsigned int doubleclicktimeout = 300;
+static unsigned int tripleclicktimeout = 600;
+
+/* alt screens */
+int allowaltscreen = 1;
+
+/* allow certain non-interactive (insecure) window operations such as:
+ setting the clipboard text */
+int allowwindowops = 0;
+
+/*
+ * draw latency range in ms - from new content/keypress/etc until drawing.
+ * within this range, st draws when content stops arriving (idle). mostly it's
+ * near minlatency, but it waits longer for slow updates to avoid partial draw.
+ * low minlatency will tear/flicker more, as it can "detect" idle too early.
+ */
+static double minlatency = 8;
+static double maxlatency = 33;
+
+/*
+ * blinking timeout (set to 0 to disable blinking) for the terminal blinking
+ * attribute.
+ */
+static unsigned int blinktimeout = 800;
+
+/*
+ * thickness of underline and bar cursors
+ */
+static unsigned int cursorthickness = 2;
+
+/*
+ * bell volume. It must be a value between -100 and 100. Use 0 for disabling
+ * it
+ */
+static int bellvolume = 0;
+
+/* default TERM value */
+char *termname = "st";
+
+/*
+ * spaces per tab
+ *
+ * When you are changing this value, don't forget to adapt the »it« value in
+ * the st.info and appropriately install the st.info in the environment where
+ * you use this st version.
+ *
+ * it#$tabspaces,
+ *
+ * Secondly make sure your kernel is not expanding tabs. When running `stty
+ * -a` »tab0« should appear. You can tell the terminal to not expand tabs by
+ * running following command:
+ *
+ * stty tabs
+ */
+unsigned int tabspaces = 8;
+
+/* Terminal colors (16 first used in escape sequence) */
+static const char *colorname[] = {
+ /* 8 normal colors */
+ "black",
+ "#BF616A",
+ "#A3BE8C",
+ "#B48EAD",
+ "#88C0D0",
+ "#B48EAD",
+ "#81A1C1",
+ "#D8DEE9",
+
+ /* 8 bright colors */
+ "#4C566A",
+ "#BF616A",
+ "#A3BE8C",
+ "#ECEFF4",
+ "#5c5cff",
+ "plum",
+ "#88C0D0",
+ "#ECEFF4",
+
+ [255] = 0,
+
+ /* more colors can be added after 255 to use with DefaultXX */
+ "#ECEFF4",
+ "#434C5E",
+ "#E5E9F0", /* default foreground colour */
+ "#020000", /* default background colour old: #121b21, #020000, #2E3440 <- nord, */
+};
+
+
+/*
+ * Default colors (colorname index)
+ * foreground, background, cursor, reverse cursor
+ */
+unsigned int defaultfg = 258;
+unsigned int defaultbg = 259;
+unsigned int defaultcs = 256;
+static unsigned int defaultrcs = 257;
+
+/*
+ * Default shape of cursor
+ * 2: Block ("█")
+ * 4: Underline ("_")
+ * 6: Bar ("|")
+ * 7: Snowman ("☃")
+ */
+static unsigned int cursorshape = 2;
+
+/*
+ * Default columns and rows numbers
+ */
+
+static unsigned int cols = 80;
+static unsigned int rows = 24;
+
+/*
+ * Default colour and shape of the mouse cursor
+ */
+static unsigned int mouseshape = XC_xterm;
+static unsigned int mousefg = 7;
+static unsigned int mousebg = 0;
+
+/*
+ * Color used to display font attributes when fontconfig selected a font which
+ * doesn't match the ones requested.
+ */
+static unsigned int defaultattr = 11;
+
+/*
+ * Force mouse select/shortcuts while mask is active (when MODE_MOUSE is set).
+ * Note that if you want to use ShiftMask with selmasks, set this to an other
+ * modifier, set to 0 to not use it.
+ */
+static uint forcemousemod = ShiftMask;
+
+/*
+ * Internal mouse shortcuts.
+ * Beware that overloading Button1 will disable the selection.
+ */
+static MouseShortcut mshortcuts[] = {
+ /* mask button function argument release */
+ { XK_ANY_MOD, Button2, selpaste, {.i = 0}, 1 },
+ { ShiftMask, Button4, ttysend, {.s = "\033[5;2~"} },
+ { XK_ANY_MOD, Button4, ttysend, {.s = "\031"} },
+ { ShiftMask, Button5, ttysend, {.s = "\033[6;2~"} },
+ { XK_ANY_MOD, Button5, ttysend, {.s = "\005"} },
+};
+
+/* Internal keyboard shortcuts. */
+#define MODKEY Mod1Mask
+#define TERMMOD (ControlMask|ShiftMask)
+
+static Shortcut shortcuts[] = {
+ /* mask keysym function argument */
+ { XK_ANY_MOD, XK_Break, sendbreak, {.i = 0} },
+ { ControlMask, XK_Print, toggleprinter, {.i = 0} },
+ { ShiftMask, XK_Print, printscreen, {.i = 0} },
+ { XK_ANY_MOD, XK_Print, printsel, {.i = 0} },
+ { TERMMOD, XK_plus, zoom, {.f = +1} },
+ { TERMMOD, XK_underscore, zoom, {.f = -1} },
+ { TERMMOD, XK_Home, zoomreset, {.f = 0} },
+ { TERMMOD, XK_C, clipcopy, {.i = 0} },
+ { TERMMOD, XK_V, clippaste, {.i = 0} },
+ { TERMMOD, XK_Y, selpaste, {.i = 0} },
+ { ShiftMask, XK_Insert, selpaste, {.i = 0} },
+ { TERMMOD, XK_Num_Lock, numlock, {.i = 0} },
+ { TERMMOD, XK_K, kscrollup, {.i = -1} },
+ { TERMMOD, XK_J, kscrolldown, {.i = -1} },
+};
+
+/*
+ * Special keys (change & recompile st.info accordingly)
+ *
+ * Mask value:
+ * * Use XK_ANY_MOD to match the key no matter modifiers state
+ * * Use XK_NO_MOD to match the key alone (no modifiers)
+ * appkey value:
+ * * 0: no value
+ * * > 0: keypad application mode enabled
+ * * = 2: term.numlock = 1
+ * * < 0: keypad application mode disabled
+ * appcursor value:
+ * * 0: no value
+ * * > 0: cursor application mode enabled
+ * * < 0: cursor application mode disabled
+ *
+ * Be careful with the order of the definitions because st searches in
+ * this table sequentially, so any XK_ANY_MOD must be in the last
+ * position for a key.
+ */
+
+/*
+ * If you want keys other than the X11 function keys (0xFD00 - 0xFFFF)
+ * to be mapped below, add them to this array.
+ */
+static KeySym mappedkeys[] = { -1 };
+
+/*
+ * State bits to ignore when matching key or button events. By default,
+ * numlock (Mod2Mask) and keyboard layout (XK_SWITCH_MOD) are ignored.
+ */
+static uint ignoremod = Mod2Mask|XK_SWITCH_MOD;
+
+/*
+ * This is the huge key array which defines all compatibility to the Linux
+ * world. Please decide about changes wisely.
+ */
+static Key key[] = {
+ /* keysym mask string appkey appcursor */
+ { XK_KP_Home, ShiftMask, "\033[2J", 0, -1},
+ { XK_KP_Home, ShiftMask, "\033[1;2H", 0, +1},
+ { XK_KP_Home, XK_ANY_MOD, "\033[H", 0, -1},
+ { XK_KP_Home, XK_ANY_MOD, "\033[1~", 0, +1},
+ { XK_KP_Up, XK_ANY_MOD, "\033Ox", +1, 0},
+ { XK_KP_Up, XK_ANY_MOD, "\033[A", 0, -1},
+ { XK_KP_Up, XK_ANY_MOD, "\033OA", 0, +1},
+ { XK_KP_Down, XK_ANY_MOD, "\033Or", +1, 0},
+ { XK_KP_Down, XK_ANY_MOD, "\033[B", 0, -1},
+ { XK_KP_Down, XK_ANY_MOD, "\033OB", 0, +1},
+ { XK_KP_Left, XK_ANY_MOD, "\033Ot", +1, 0},
+ { XK_KP_Left, XK_ANY_MOD, "\033[D", 0, -1},
+ { XK_KP_Left, XK_ANY_MOD, "\033OD", 0, +1},
+ { XK_KP_Right, XK_ANY_MOD, "\033Ov", +1, 0},
+ { XK_KP_Right, XK_ANY_MOD, "\033[C", 0, -1},
+ { XK_KP_Right, XK_ANY_MOD, "\033OC", 0, +1},
+ { XK_KP_Prior, ShiftMask, "\033[5;2~", 0, 0},
+ { XK_KP_Prior, XK_ANY_MOD, "\033[5~", 0, 0},
+ { XK_KP_Begin, XK_ANY_MOD, "\033[E", 0, 0},
+ { XK_KP_End, ControlMask, "\033[J", -1, 0},
+ { XK_KP_End, ControlMask, "\033[1;5F", +1, 0},
+ { XK_KP_End, ShiftMask, "\033[K", -1, 0},
+ { XK_KP_End, ShiftMask, "\033[1;2F", +1, 0},
+ { XK_KP_End, XK_ANY_MOD, "\033[4~", 0, 0},
+ { XK_KP_Next, ShiftMask, "\033[6;2~", 0, 0},
+ { XK_KP_Next, XK_ANY_MOD, "\033[6~", 0, 0},
+ { XK_KP_Insert, ShiftMask, "\033[2;2~", +1, 0},
+ { XK_KP_Insert, ShiftMask, "\033[4l", -1, 0},
+ { XK_KP_Insert, ControlMask, "\033[L", -1, 0},
+ { XK_KP_Insert, ControlMask, "\033[2;5~", +1, 0},
+ { XK_KP_Insert, XK_ANY_MOD, "\033[4h", -1, 0},
+ { XK_KP_Insert, XK_ANY_MOD, "\033[2~", +1, 0},
+ { XK_KP_Delete, ControlMask, "\033[M", -1, 0},
+ { XK_KP_Delete, ControlMask, "\033[3;5~", +1, 0},
+ { XK_KP_Delete, ShiftMask, "\033[2K", -1, 0},
+ { XK_KP_Delete, ShiftMask, "\033[3;2~", +1, 0},
+ { XK_KP_Delete, XK_ANY_MOD, "\033[P", -1, 0},
+ { XK_KP_Delete, XK_ANY_MOD, "\033[3~", +1, 0},
+ { XK_KP_Multiply, XK_ANY_MOD, "\033Oj", +2, 0},
+ { XK_KP_Add, XK_ANY_MOD, "\033Ok", +2, 0},
+ { XK_KP_Enter, XK_ANY_MOD, "\033OM", +2, 0},
+ { XK_KP_Enter, XK_ANY_MOD, "\r", -1, 0},
+ { XK_KP_Subtract, XK_ANY_MOD, "\033Om", +2, 0},
+ { XK_KP_Decimal, XK_ANY_MOD, "\033On", +2, 0},
+ { XK_KP_Divide, XK_ANY_MOD, "\033Oo", +2, 0},
+ { XK_KP_0, XK_ANY_MOD, "\033Op", +2, 0},
+ { XK_KP_1, XK_ANY_MOD, "\033Oq", +2, 0},
+ { XK_KP_2, XK_ANY_MOD, "\033Or", +2, 0},
+ { XK_KP_3, XK_ANY_MOD, "\033Os", +2, 0},
+ { XK_KP_4, XK_ANY_MOD, "\033Ot", +2, 0},
+ { XK_KP_5, XK_ANY_MOD, "\033Ou", +2, 0},
+ { XK_KP_6, XK_ANY_MOD, "\033Ov", +2, 0},
+ { XK_KP_7, XK_ANY_MOD, "\033Ow", +2, 0},
+ { XK_KP_8, XK_ANY_MOD, "\033Ox", +2, 0},
+ { XK_KP_9, XK_ANY_MOD, "\033Oy", +2, 0},
+ { XK_Up, ShiftMask, "\033[1;2A", 0, 0},
+ { XK_Up, Mod1Mask, "\033[1;3A", 0, 0},
+ { XK_Up, ShiftMask|Mod1Mask,"\033[1;4A", 0, 0},
+ { XK_Up, ControlMask, "\033[1;5A", 0, 0},
+ { XK_Up, ShiftMask|ControlMask,"\033[1;6A", 0, 0},
+ { XK_Up, ControlMask|Mod1Mask,"\033[1;7A", 0, 0},
+ { XK_Up,ShiftMask|ControlMask|Mod1Mask,"\033[1;8A", 0, 0},
+ { XK_Up, XK_ANY_MOD, "\033[A", 0, -1},
+ { XK_Up, XK_ANY_MOD, "\033OA", 0, +1},
+ { XK_Down, ShiftMask, "\033[1;2B", 0, 0},
+ { XK_Down, Mod1Mask, "\033[1;3B", 0, 0},
+ { XK_Down, ShiftMask|Mod1Mask,"\033[1;4B", 0, 0},
+ { XK_Down, ControlMask, "\033[1;5B", 0, 0},
+ { XK_Down, ShiftMask|ControlMask,"\033[1;6B", 0, 0},
+ { XK_Down, ControlMask|Mod1Mask,"\033[1;7B", 0, 0},
+ { XK_Down,ShiftMask|ControlMask|Mod1Mask,"\033[1;8B",0, 0},
+ { XK_Down, XK_ANY_MOD, "\033[B", 0, -1},
+ { XK_Down, XK_ANY_MOD, "\033OB", 0, +1},
+ { XK_Left, ShiftMask, "\033[1;2D", 0, 0},
+ { XK_Left, Mod1Mask, "\033[1;3D", 0, 0},
+ { XK_Left, ShiftMask|Mod1Mask,"\033[1;4D", 0, 0},
+ { XK_Left, ControlMask, "\033[1;5D", 0, 0},
+ { XK_Left, ShiftMask|ControlMask,"\033[1;6D", 0, 0},
+ { XK_Left, ControlMask|Mod1Mask,"\033[1;7D", 0, 0},
+ { XK_Left,ShiftMask|ControlMask|Mod1Mask,"\033[1;8D",0, 0},
+ { XK_Left, XK_ANY_MOD, "\033[D", 0, -1},
+ { XK_Left, XK_ANY_MOD, "\033OD", 0, +1},
+ { XK_Right, ShiftMask, "\033[1;2C", 0, 0},
+ { XK_Right, Mod1Mask, "\033[1;3C", 0, 0},
+ { XK_Right, ShiftMask|Mod1Mask,"\033[1;4C", 0, 0},
+ { XK_Right, ControlMask, "\033[1;5C", 0, 0},
+ { XK_Right, ShiftMask|ControlMask,"\033[1;6C", 0, 0},
+ { XK_Right, ControlMask|Mod1Mask,"\033[1;7C", 0, 0},
+ { XK_Right,ShiftMask|ControlMask|Mod1Mask,"\033[1;8C",0, 0},
+ { XK_Right, XK_ANY_MOD, "\033[C", 0, -1},
+ { XK_Right, XK_ANY_MOD, "\033OC", 0, +1},
+ { XK_ISO_Left_Tab, ShiftMask, "\033[Z", 0, 0},
+ { XK_Return, Mod1Mask, "\033\r", 0, 0},
+ { XK_Return, XK_ANY_MOD, "\r", 0, 0},
+ { XK_Insert, ShiftMask, "\033[4l", -1, 0},
+ { XK_Insert, ShiftMask, "\033[2;2~", +1, 0},
+ { XK_Insert, ControlMask, "\033[L", -1, 0},
+ { XK_Insert, ControlMask, "\033[2;5~", +1, 0},
+ { XK_Insert, XK_ANY_MOD, "\033[4h", -1, 0},
+ { XK_Insert, XK_ANY_MOD, "\033[2~", +1, 0},
+ { XK_Delete, ControlMask, "\033[M", -1, 0},
+ { XK_Delete, ControlMask, "\033[3;5~", +1, 0},
+ { XK_Delete, ShiftMask, "\033[2K", -1, 0},
+ { XK_Delete, ShiftMask, "\033[3;2~", +1, 0},
+ { XK_Delete, XK_ANY_MOD, "\033[P", -1, 0},
+ { XK_Delete, XK_ANY_MOD, "\033[3~", +1, 0},
+ { XK_BackSpace, XK_NO_MOD, "\177", 0, 0},
+ { XK_BackSpace, Mod1Mask, "\033\177", 0, 0},
+ { XK_Home, ShiftMask, "\033[2J", 0, -1},
+ { XK_Home, ShiftMask, "\033[1;2H", 0, +1},
+ { XK_Home, XK_ANY_MOD, "\033[H", 0, -1},
+ { XK_Home, XK_ANY_MOD, "\033[1~", 0, +1},
+ { XK_End, ControlMask, "\033[J", -1, 0},
+ { XK_End, ControlMask, "\033[1;5F", +1, 0},
+ { XK_End, ShiftMask, "\033[K", -1, 0},
+ { XK_End, ShiftMask, "\033[1;2F", +1, 0},
+ { XK_End, XK_ANY_MOD, "\033[4~", 0, 0},
+ { XK_Prior, ControlMask, "\033[5;5~", 0, 0},
+ { XK_Prior, ShiftMask, "\033[5;2~", 0, 0},
+ { XK_Prior, XK_ANY_MOD, "\033[5~", 0, 0},
+ { XK_Next, ControlMask, "\033[6;5~", 0, 0},
+ { XK_Next, ShiftMask, "\033[6;2~", 0, 0},
+ { XK_Next, XK_ANY_MOD, "\033[6~", 0, 0},
+ { XK_F1, XK_NO_MOD, "\033OP" , 0, 0},
+ { XK_F1, /* F13 */ ShiftMask, "\033[1;2P", 0, 0},
+ { XK_F1, /* F25 */ ControlMask, "\033[1;5P", 0, 0},
+ { XK_F1, /* F37 */ Mod4Mask, "\033[1;6P", 0, 0},
+ { XK_F1, /* F49 */ Mod1Mask, "\033[1;3P", 0, 0},
+ { XK_F1, /* F61 */ Mod3Mask, "\033[1;4P", 0, 0},
+ { XK_F2, XK_NO_MOD, "\033OQ" , 0, 0},
+ { XK_F2, /* F14 */ ShiftMask, "\033[1;2Q", 0, 0},
+ { XK_F2, /* F26 */ ControlMask, "\033[1;5Q", 0, 0},
+ { XK_F2, /* F38 */ Mod4Mask, "\033[1;6Q", 0, 0},
+ { XK_F2, /* F50 */ Mod1Mask, "\033[1;3Q", 0, 0},
+ { XK_F2, /* F62 */ Mod3Mask, "\033[1;4Q", 0, 0},
+ { XK_F3, XK_NO_MOD, "\033OR" , 0, 0},
+ { XK_F3, /* F15 */ ShiftMask, "\033[1;2R", 0, 0},
+ { XK_F3, /* F27 */ ControlMask, "\033[1;5R", 0, 0},
+ { XK_F3, /* F39 */ Mod4Mask, "\033[1;6R", 0, 0},
+ { XK_F3, /* F51 */ Mod1Mask, "\033[1;3R", 0, 0},
+ { XK_F3, /* F63 */ Mod3Mask, "\033[1;4R", 0, 0},
+ { XK_F4, XK_NO_MOD, "\033OS" , 0, 0},
+ { XK_F4, /* F16 */ ShiftMask, "\033[1;2S", 0, 0},
+ { XK_F4, /* F28 */ ControlMask, "\033[1;5S", 0, 0},
+ { XK_F4, /* F40 */ Mod4Mask, "\033[1;6S", 0, 0},
+ { XK_F4, /* F52 */ Mod1Mask, "\033[1;3S", 0, 0},
+ { XK_F5, XK_NO_MOD, "\033[15~", 0, 0},
+ { XK_F5, /* F17 */ ShiftMask, "\033[15;2~", 0, 0},
+ { XK_F5, /* F29 */ ControlMask, "\033[15;5~", 0, 0},
+ { XK_F5, /* F41 */ Mod4Mask, "\033[15;6~", 0, 0},
+ { XK_F5, /* F53 */ Mod1Mask, "\033[15;3~", 0, 0},
+ { XK_F6, XK_NO_MOD, "\033[17~", 0, 0},
+ { XK_F6, /* F18 */ ShiftMask, "\033[17;2~", 0, 0},
+ { XK_F6, /* F30 */ ControlMask, "\033[17;5~", 0, 0},
+ { XK_F6, /* F42 */ Mod4Mask, "\033[17;6~", 0, 0},
+ { XK_F6, /* F54 */ Mod1Mask, "\033[17;3~", 0, 0},
+ { XK_F7, XK_NO_MOD, "\033[18~", 0, 0},
+ { XK_F7, /* F19 */ ShiftMask, "\033[18;2~", 0, 0},
+ { XK_F7, /* F31 */ ControlMask, "\033[18;5~", 0, 0},
+ { XK_F7, /* F43 */ Mod4Mask, "\033[18;6~", 0, 0},
+ { XK_F7, /* F55 */ Mod1Mask, "\033[18;3~", 0, 0},
+ { XK_F8, XK_NO_MOD, "\033[19~", 0, 0},
+ { XK_F8, /* F20 */ ShiftMask, "\033[19;2~", 0, 0},
+ { XK_F8, /* F32 */ ControlMask, "\033[19;5~", 0, 0},
+ { XK_F8, /* F44 */ Mod4Mask, "\033[19;6~", 0, 0},
+ { XK_F8, /* F56 */ Mod1Mask, "\033[19;3~", 0, 0},
+ { XK_F9, XK_NO_MOD, "\033[20~", 0, 0},
+ { XK_F9, /* F21 */ ShiftMask, "\033[20;2~", 0, 0},
+ { XK_F9, /* F33 */ ControlMask, "\033[20;5~", 0, 0},
+ { XK_F9, /* F45 */ Mod4Mask, "\033[20;6~", 0, 0},
+ { XK_F9, /* F57 */ Mod1Mask, "\033[20;3~", 0, 0},
+ { XK_F10, XK_NO_MOD, "\033[21~", 0, 0},
+ { XK_F10, /* F22 */ ShiftMask, "\033[21;2~", 0, 0},
+ { XK_F10, /* F34 */ ControlMask, "\033[21;5~", 0, 0},
+ { XK_F10, /* F46 */ Mod4Mask, "\033[21;6~", 0, 0},
+ { XK_F10, /* F58 */ Mod1Mask, "\033[21;3~", 0, 0},
+ { XK_F11, XK_NO_MOD, "\033[23~", 0, 0},
+ { XK_F11, /* F23 */ ShiftMask, "\033[23;2~", 0, 0},
+ { XK_F11, /* F35 */ ControlMask, "\033[23;5~", 0, 0},
+ { XK_F11, /* F47 */ Mod4Mask, "\033[23;6~", 0, 0},
+ { XK_F11, /* F59 */ Mod1Mask, "\033[23;3~", 0, 0},
+ { XK_F12, XK_NO_MOD, "\033[24~", 0, 0},
+ { XK_F12, /* F24 */ ShiftMask, "\033[24;2~", 0, 0},
+ { XK_F12, /* F36 */ ControlMask, "\033[24;5~", 0, 0},
+ { XK_F12, /* F48 */ Mod4Mask, "\033[24;6~", 0, 0},
+ { XK_F12, /* F60 */ Mod1Mask, "\033[24;3~", 0, 0},
+ { XK_F13, XK_NO_MOD, "\033[1;2P", 0, 0},
+ { XK_F14, XK_NO_MOD, "\033[1;2Q", 0, 0},
+ { XK_F15, XK_NO_MOD, "\033[1;2R", 0, 0},
+ { XK_F16, XK_NO_MOD, "\033[1;2S", 0, 0},
+ { XK_F17, XK_NO_MOD, "\033[15;2~", 0, 0},
+ { XK_F18, XK_NO_MOD, "\033[17;2~", 0, 0},
+ { XK_F19, XK_NO_MOD, "\033[18;2~", 0, 0},
+ { XK_F20, XK_NO_MOD, "\033[19;2~", 0, 0},
+ { XK_F21, XK_NO_MOD, "\033[20;2~", 0, 0},
+ { XK_F22, XK_NO_MOD, "\033[21;2~", 0, 0},
+ { XK_F23, XK_NO_MOD, "\033[23;2~", 0, 0},
+ { XK_F24, XK_NO_MOD, "\033[24;2~", 0, 0},
+ { XK_F25, XK_NO_MOD, "\033[1;5P", 0, 0},
+ { XK_F26, XK_NO_MOD, "\033[1;5Q", 0, 0},
+ { XK_F27, XK_NO_MOD, "\033[1;5R", 0, 0},
+ { XK_F28, XK_NO_MOD, "\033[1;5S", 0, 0},
+ { XK_F29, XK_NO_MOD, "\033[15;5~", 0, 0},
+ { XK_F30, XK_NO_MOD, "\033[17;5~", 0, 0},
+ { XK_F31, XK_NO_MOD, "\033[18;5~", 0, 0},
+ { XK_F32, XK_NO_MOD, "\033[19;5~", 0, 0},
+ { XK_F33, XK_NO_MOD, "\033[20;5~", 0, 0},
+ { XK_F34, XK_NO_MOD, "\033[21;5~", 0, 0},
+ { XK_F35, XK_NO_MOD, "\033[23;5~", 0, 0},
+};
+
+/*
+ * Selection types' masks.
+ * Use the same masks as usual.
+ * Button1Mask is always unset, to make masks match between ButtonPress.
+ * ButtonRelease and MotionNotify.
+ * If no match is found, regular selection is used.
+ */
+static uint selmasks[] = {
+ [SEL_RECTANGULAR] = Mod1Mask,
+};
+
+/*
+ * Printable characters in ASCII, used to estimate the advance width
+ * of single wide characters.
+ */
+static char ascii_printable[] =
+ " !\"#$%&'()*+,-./0123456789:;<=>?"
+ "@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_"
+ "`abcdefghijklmnopqrstuvwxyz{|}~";
diff --git a/st/config.mk b/st/config.mk
@@ -0,0 +1,39 @@
+# st version
+VERSION = 0.9
+
+# Customize below to fit your system
+
+# paths
+PREFIX = /usr/local
+MANPREFIX = $(PREFIX)/share/man
+
+X11INC = /usr/X11R6/include
+X11LIB = /usr/X11R6/lib
+
+PKG_CONFIG = pkg-config
+
+# includes and libs
+INCS = -I$(X11INC) \
+ `$(PKG_CONFIG) --cflags imlib2` \
+ `$(PKG_CONFIG) --cflags fontconfig` \
+ `$(PKG_CONFIG) --cflags freetype2`
+LIBS = -L$(X11LIB) -lm -lrt -lX11 -lutil -lXft -lXrender \
+ `$(PKG_CONFIG) --libs imlib2` \
+ `$(PKG_CONFIG) --libs zlib` \
+ `$(PKG_CONFIG) --libs fontconfig` \
+ `$(PKG_CONFIG) --libs freetype2`
+
+# flags
+STCPPFLAGS = -DVERSION=\"$(VERSION)\" -D_XOPEN_SOURCE=600
+STCFLAGS = $(INCS) $(STCPPFLAGS) $(CPPFLAGS) $(CFLAGS)
+STLDFLAGS = $(LIBS) $(LDFLAGS)
+
+# OpenBSD:
+#CPPFLAGS = -DVERSION=\"$(VERSION)\" -D_XOPEN_SOURCE=600 -D_BSD_SOURCE
+#LIBS = -L$(X11LIB) -lm -lX11 -lutil -lXft \
+# `$(PKG_CONFIG) --libs fontconfig` \
+# `$(PKG_CONFIG) --libs freetype2`
+#MANPREFIX = ${PREFIX}/man
+
+# compiler and linker
+# CC = c99
diff --git a/st/graphics.c b/st/graphics.c
@@ -0,0 +1,3812 @@
+/* The MIT License
+
+ Copyright (c) 2021-2024 Sergei Grechanik <sergei.grechanik@gmail.com>
+
+ Permission is hereby granted, free of charge, to any person obtaining
+ a copy of this software and associated documentation files (the
+ "Software"), to deal in the Software without restriction, including
+ without limitation the rights to use, copy, modify, merge, publish,
+ distribute, sublicense, and/or sell copies of the Software, and to
+ permit persons to whom the Software is furnished to do so, subject to
+ the following conditions:
+
+ The above copyright notice and this permission notice shall be
+ included in all copies or substantial portions of the Software.
+
+ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ SOFTWARE.
+*/
+
+////////////////////////////////////////////////////////////////////////////////
+//
+// This file implements a subset of the kitty graphics protocol.
+//
+////////////////////////////////////////////////////////////////////////////////
+
+#define _POSIX_C_SOURCE 200809L
+
+#include <zlib.h>
+#include <Imlib2.h>
+#include <X11/Xlib.h>
+#include <X11/extensions/Xrender.h>
+#include <assert.h>
+#include <ctype.h>
+#include <spawn.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <time.h>
+#include <unistd.h>
+#include <errno.h>
+
+#include "graphics.h"
+#include "khash.h"
+#include "kvec.h"
+
+extern char **environ;
+
+#define MAX_FILENAME_SIZE 256
+#define MAX_INFO_LEN 256
+#define MAX_IMAGE_RECTS 20
+
+/// The type used in this file to represent time. Used both for time differences
+/// and absolute times (as milliseconds since an arbitrary point in time, see
+/// `initialization_time`).
+typedef int64_t Milliseconds;
+
+enum ScaleMode {
+ SCALE_MODE_UNSET = 0,
+ /// Stretch or shrink the image to fill the box, ignoring aspect ratio.
+ SCALE_MODE_FILL = 1,
+ /// Preserve aspect ratio and fit to width or to height so that the
+ /// whole image is visible.
+ SCALE_MODE_CONTAIN = 2,
+ /// Do not scale. The image may be cropped if the box is too small.
+ SCALE_MODE_NONE = 3,
+ /// Do not scale, unless the box is too small, in which case the image
+ /// will be shrunk like with `SCALE_MODE_CONTAIN`.
+ SCALE_MODE_NONE_OR_CONTAIN = 4,
+};
+
+enum AnimationState {
+ ANIMATION_STATE_UNSET = 0,
+ /// The animation is stopped. Display the current frame, but don't
+ /// advance to the next one.
+ ANIMATION_STATE_STOPPED = 1,
+ /// Run the animation to then end, then wait for the next frame.
+ ANIMATION_STATE_LOADING = 2,
+ /// Run the animation in a loop.
+ ANIMATION_STATE_LOOPING = 3,
+};
+
+/// The status of an image. Each image uploaded to the terminal is cached on
+/// disk, then it is loaded to ram when needed.
+enum ImageStatus {
+ STATUS_UNINITIALIZED = 0,
+ STATUS_UPLOADING = 1,
+ STATUS_UPLOADING_ERROR = 2,
+ STATUS_UPLOADING_SUCCESS = 3,
+ STATUS_RAM_LOADING_ERROR = 4,
+ STATUS_RAM_LOADING_IN_PROGRESS = 5,
+ STATUS_RAM_LOADING_SUCCESS = 6,
+};
+
+const char *image_status_strings[6] = {
+ "STATUS_UNINITIALIZED",
+ "STATUS_UPLOADING",
+ "STATUS_UPLOADING_ERROR",
+ "STATUS_UPLOADING_SUCCESS",
+ "STATUS_RAM_LOADING_ERROR",
+ "STATUS_RAM_LOADING_SUCCESS",
+};
+
+enum ImageUploadingFailure {
+ ERROR_OVER_SIZE_LIMIT = 1,
+ ERROR_CANNOT_OPEN_CACHED_FILE = 2,
+ ERROR_UNEXPECTED_SIZE = 3,
+ ERROR_CANNOT_COPY_FILE = 4,
+};
+
+const char *image_uploading_failure_strings[5] = {
+ "NO_ERROR",
+ "ERROR_OVER_SIZE_LIMIT",
+ "ERROR_CANNOT_OPEN_CACHED_FILE",
+ "ERROR_UNEXPECTED_SIZE",
+ "ERROR_CANNOT_COPY_FILE",
+};
+
+////////////////////////////////////////////////////////////////////////////////
+//
+// We use the following structures to represent images and placements:
+//
+// - Image: this is the main structure representing an image, usually created
+// by actions 'a=t', 'a=T`. Each image has an id (image id aka client id,
+// specified by 'i='). An image may have multiple frames (ImageFrame) and
+// placements (ImagePlacement).
+//
+// - ImageFrame: represents a single frame of an image, usually created by
+// the action 'a=f' (and the first frame is created with the image itself).
+// Each frame has an index and also:
+// - a file containing the frame data (considered to be "on disk", although
+// it's probably in tmpfs),
+// - an imlib object containing the fully composed frame (i.e. the frame
+// data from the file composed onto the background frame or color). It is
+// not ready for display yet, because it needs to be scaled and uploaded
+// to the X server.
+//
+// - ImagePlacement: represents a placement of an image, created by 'a=p' and
+// 'a=T'. Each placement has an id (placement id, specified by 'p='). Also
+// each placement has an array of pixmaps: one for each frame of the image.
+// Each pixmap is a scaled and uploaded image ready to be displayed.
+//
+// Images are store in the `images` hash table, mapping image ids to Image
+// objects (allocated on the heap).
+//
+// Placements are stored in the `placements` hash table of each Image object,
+// mapping placement ids to ImagePlacement objects (also allocated on the heap).
+//
+// ImageFrames are stored in the `first_frame` field and in the
+// `frames_beyond_the_first` array of each Image object. They are stored by
+// value, so ImageFrame pointer may be invalidated when frames are
+// added/deleted, be careful.
+//
+////////////////////////////////////////////////////////////////////////////////
+
+struct Image;
+struct ImageFrame;
+struct ImagePlacement;
+
+KHASH_MAP_INIT_INT(id2image, struct Image *)
+KHASH_MAP_INIT_INT(id2placement, struct ImagePlacement *)
+
+typedef struct ImageFrame {
+ /// The image this frame belongs to.
+ struct Image *image;
+ /// The 1-based index of the frame. Zero if the frame isn't initialized.
+ int index;
+ /// The last time when the frame was displayed or otherwise touched.
+ Milliseconds atime;
+ /// The background color of the frame in the 0xRRGGBBAA format.
+ uint32_t background_color;
+ /// The index of the background frame. Zero to use the color instead.
+ int background_frame_index;
+ /// The duration of the frame in milliseconds.
+ int gap;
+ /// The expected size of the frame image file (specified with 'S='),
+ /// used to check if uploading succeeded.
+ unsigned expected_size;
+ /// Format specification (see the `f=` key).
+ int format;
+ /// Pixel width and height of the non-composed (on-disk) frame data. May
+ /// differ from the image (i.e. first frame) dimensions.
+ int data_pix_width, data_pix_height;
+ /// The offset of the frame relative to the first frame.
+ int x, y;
+ /// Compression mode (see the `o=` key).
+ char compression;
+ /// The status (see `ImageStatus`).
+ char status;
+ /// The reason of uploading failure (see `ImageUploadingFailure`).
+ char uploading_failure;
+ /// Whether failures and successes should be reported ('q=').
+ char quiet;
+ /// Whether to blend the frame with the background or replace it.
+ char blend;
+ /// The file corresponding to the on-disk cache, used when uploading.
+ FILE *open_file;
+ /// The size of the corresponding file cached on disk.
+ unsigned disk_size;
+ /// The imlib object containing the fully composed frame. It's not
+ /// scaled for screen display yet.
+ Imlib_Image imlib_object;
+} ImageFrame;
+
+typedef struct Image {
+ /// The client id (the one specified with 'i='). Must be nonzero.
+ uint32_t image_id;
+ /// The client id specified in the query command (`a=q`). This one must
+ /// be used to create the response if it's non-zero.
+ uint32_t query_id;
+ /// The number specified in the transmission command (`I=`). If
+ /// non-zero, it may be used to identify the image instead of the
+ /// image_id, and it also should be mentioned in responses.
+ uint32_t image_number;
+ /// The last time when the image was displayed or otherwise touched.
+ Milliseconds atime;
+ /// The total duration of the animation in milliseconds.
+ int total_duration;
+ /// The total size of cached image files for all frames.
+ int total_disk_size;
+ /// The global index of the creation command. Used to decide which image
+ /// is newer if they have the same image number.
+ uint64_t global_command_index;
+ /// The 1-based index of the currently displayed frame.
+ int current_frame;
+ /// The state of the animation, see `AnimationState`.
+ char animation_state;
+ /// The absolute time that is assumed to be the start of the current
+ /// frame (in ms since initialization).
+ Milliseconds current_frame_time;
+ /// The absolute time of the last redraw (in ms since initialization).
+ /// Used to check whether it's the first time we draw the image in the
+ /// current redraw cycle.
+ Milliseconds last_redraw;
+ /// The absolute time of the next redraw (in ms since initialization).
+ /// 0 means no redraw is scheduled.
+ Milliseconds next_redraw;
+ /// The unscaled pixel width and height of the image. Usually inherited
+ /// from the first frame.
+ int pix_width, pix_height;
+ /// The first frame.
+ ImageFrame first_frame;
+ /// The array of frames beyond the first one.
+ kvec_t(ImageFrame) frames_beyond_the_first;
+ /// Image placements.
+ khash_t(id2placement) *placements;
+ /// The default placement.
+ uint32_t default_placement;
+ /// The initial placement id, specified with the transmission command,
+ /// used to report success or failure.
+ uint32_t initial_placement_id;
+} Image;
+
+typedef struct ImagePlacement {
+ /// The image this placement belongs to.
+ Image *image;
+ /// The id of the placement. Must be nonzero.
+ uint32_t placement_id;
+ /// The last time when the placement was displayed or otherwise touched.
+ Milliseconds atime;
+ /// The 1-based index of the protected pixmap. We protect a pixmap in
+ /// gr_load_pixmap to avoid unloading it right after it was loaded.
+ int protected_frame;
+ /// Whether the placement is used only for Unicode placeholders.
+ char virtual;
+ /// The scaling mode (see `ScaleMode`).
+ char scale_mode;
+ /// Height and width in cells.
+ uint16_t rows, cols;
+ /// Top-left corner of the source rectangle ('x=' and 'y=').
+ int src_pix_x, src_pix_y;
+ /// Height and width of the source rectangle (zero if full image).
+ int src_pix_width, src_pix_height;
+ /// The image appropriately scaled and uploaded to the X server. This
+ /// pixmap is premultiplied by alpha.
+ Pixmap first_pixmap;
+ /// The array of pixmaps beyond the first one.
+ kvec_t(Pixmap) pixmaps_beyond_the_first;
+ /// The dimensions of the cell used to scale the image. If cell
+ /// dimensions are changed (font change), the image will be rescaled.
+ uint16_t scaled_cw, scaled_ch;
+ /// If true, do not move the cursor when displaying this placement
+ /// (non-virtual placements only).
+ char do_not_move_cursor;
+} ImagePlacement;
+
+/// A rectangular piece of an image to be drawn.
+typedef struct {
+ uint32_t image_id;
+ uint32_t placement_id;
+ /// The position of the rectangle in pixels.
+ int screen_x_pix, screen_y_pix;
+ /// The starting row on the screen.
+ int screen_y_row;
+ /// The part of the whole image to be drawn, in cells. Starts are
+ /// zero-based, ends are exclusive.
+ int img_start_col, img_end_col, img_start_row, img_end_row;
+ /// The current cell width and height in pixels.
+ int cw, ch;
+ /// Whether colors should be inverted.
+ int reverse;
+} ImageRect;
+
+/// Executes `code` for each frame of an image. Example:
+///
+/// foreach_frame(image, frame, {
+/// printf("Frame %d\n", frame->index);
+/// });
+///
+#define foreach_frame(image, framevar, code) { size_t __i; \
+ for (__i = 0; __i <= kv_size((image).frames_beyond_the_first); ++__i) { \
+ ImageFrame *framevar = \
+ __i == 0 ? &(image).first_frame \
+ : &kv_A((image).frames_beyond_the_first, __i - 1); \
+ code; \
+ } }
+
+/// Executes `code` for each pixmap of a placement. Example:
+///
+/// foreach_pixmap(placement, pixmap, {
+/// ...
+/// });
+///
+#define foreach_pixmap(placement, pixmapvar, code) { size_t __i; \
+ for (__i = 0; __i <= kv_size((placement).pixmaps_beyond_the_first); ++__i) { \
+ Pixmap pixmapvar = \
+ __i == 0 ? (placement).first_pixmap \
+ : kv_A((placement).pixmaps_beyond_the_first, __i - 1); \
+ code; \
+ } }
+
+
+static Image *gr_find_image(uint32_t image_id);
+static void gr_get_frame_filename(ImageFrame *frame, char *out, size_t max_len);
+static void gr_delete_image(Image *img);
+static void gr_check_limits();
+static char *gr_base64dec(const char *src, size_t *size);
+static void sanitize_str(char *str, size_t max_len);
+static const char *sanitized_filename(const char *str);
+
+/// The array of image rectangles to draw. It is reset each frame.
+static ImageRect image_rects[MAX_IMAGE_RECTS] = {{0}};
+/// The known images (including the ones being uploaded).
+static khash_t(id2image) *images = NULL;
+/// The total number of placements in all images.
+static unsigned total_placement_count = 0;
+/// The total size of all image files stored in the on-disk cache.
+static int64_t images_disk_size = 0;
+/// The total size of all images and placements loaded into ram.
+static int64_t images_ram_size = 0;
+/// The id of the last loaded image.
+static uint32_t last_image_id = 0;
+/// Current cell width and heigh in pixels.
+static int current_cw = 0, current_ch = 0;
+/// The id of the currently uploaded image (when using direct uploading).
+static uint32_t current_upload_image_id = 0;
+/// The index of the frame currently being uploaded.
+static int current_upload_frame_index = 0;
+/// The time when the graphics module was initialized.
+static struct timespec initialization_time = {0};
+/// The time when the current frame drawing started, used for debugging fps and
+/// to calculate the current frame for animations.
+static Milliseconds drawing_start_time;
+/// The global index of the current command.
+static uint64_t global_command_counter = 0;
+/// The next redraw times for each row of the terminal. Used for animations.
+/// 0 means no redraw is scheduled.
+static kvec_t(Milliseconds) next_redraw_times = {0, 0, NULL};
+/// The number of files loaded in the current redraw cycle.
+static int this_redraw_cycle_loaded_files = 0;
+/// The number of pixmaps loaded in the current redraw cycle.
+static int this_redraw_cycle_loaded_pixmaps = 0;
+
+/// The directory where the cache files are stored.
+static char cache_dir[MAX_FILENAME_SIZE - 16];
+
+/// The table used for color inversion.
+static unsigned char reverse_table[256];
+
+// Declared in the header.
+GraphicsDebugMode graphics_debug_mode = GRAPHICS_DEBUG_NONE;
+char graphics_display_images = 1;
+GraphicsCommandResult graphics_command_result = {0};
+int graphics_next_redraw_delay = INT_MAX;
+
+// Defined in config.h
+extern const char graphics_cache_dir_template[];
+extern unsigned graphics_max_single_image_file_size;
+extern unsigned graphics_total_file_cache_size;
+extern unsigned graphics_max_single_image_ram_size;
+extern unsigned graphics_max_total_ram_size;
+extern unsigned graphics_max_total_placements;
+extern double graphics_excess_tolerance_ratio;
+extern unsigned graphics_animation_min_delay;
+
+
+////////////////////////////////////////////////////////////////////////////////
+// Basic helpers.
+////////////////////////////////////////////////////////////////////////////////
+
+#define MIN(a, b) ((a) < (b) ? (a) : (b))
+#define MAX(a, b) ((a) < (b) ? (b) : (a))
+
+/// Returns the difference between `end` and `start` in milliseconds.
+static int64_t gr_timediff_ms(const struct timespec *end,
+ const struct timespec *start) {
+ return (end->tv_sec - start->tv_sec) * 1000 +
+ (end->tv_nsec - start->tv_nsec) / 1000000;
+}
+
+/// Returns the current time in milliseconds since the initialization.
+static Milliseconds gr_now_ms() {
+ struct timespec now;
+ clock_gettime(CLOCK_MONOTONIC, &now);
+ return gr_timediff_ms(&now, &initialization_time);
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// Logging.
+////////////////////////////////////////////////////////////////////////////////
+
+#define GR_LOG(...) \
+ do { if(graphics_debug_mode) fprintf(stderr, __VA_ARGS__); } while(0)
+
+////////////////////////////////////////////////////////////////////////////////
+// Basic image management functions (create, delete, find, etc).
+////////////////////////////////////////////////////////////////////////////////
+
+/// Returns the 1-based index of the last frame. Note that you may want to use
+/// `gr_last_uploaded_frame_index` instead since the last frame may be not
+/// fully uploaded yet.
+static inline int gr_last_frame_index(Image *img) {
+ return kv_size(img->frames_beyond_the_first) + 1;
+}
+
+/// Returns the frame with the given index. Returns NULL if the index is out of
+/// bounds. The index is 1-based.
+static ImageFrame *gr_get_frame(Image *img, int index) {
+ if (!img)
+ return NULL;
+ if (index == 1)
+ return &img->first_frame;
+ if (2 <= index && index <= gr_last_frame_index(img))
+ return &kv_A(img->frames_beyond_the_first, index - 2);
+ return NULL;
+}
+
+/// Returns the last frame of the image. Returns NULL if `img` is NULL.
+static ImageFrame *gr_get_last_frame(Image *img) {
+ if (!img)
+ return NULL;
+ return gr_get_frame(img, gr_last_frame_index(img));
+}
+
+/// Returns the 1-based index of the last frame or the second-to-last frame if
+/// the last frame is not fully uploaded yet.
+static inline int gr_last_uploaded_frame_index(Image *img) {
+ int last_index = gr_last_frame_index(img);
+ if (last_index > 1 &&
+ gr_get_frame(img, last_index)->status < STATUS_UPLOADING_SUCCESS)
+ return last_index - 1;
+ return last_index;
+}
+
+/// Returns the pixmap for the frame with the given index. Returns 0 if the
+/// index is out of bounds. The index is 1-based.
+static Pixmap gr_get_frame_pixmap(ImagePlacement *placement, int index) {
+ if (index == 1)
+ return placement->first_pixmap;
+ if (2 <= index &&
+ index <= kv_size(placement->pixmaps_beyond_the_first) + 1)
+ return kv_A(placement->pixmaps_beyond_the_first, index - 2);
+ return 0;
+}
+
+/// Sets the pixmap for the frame with the given index. The index is 1-based.
+/// The array of pixmaps is resized if needed.
+static void gr_set_frame_pixmap(ImagePlacement *placement, int index,
+ Pixmap pixmap) {
+ if (index == 1) {
+ placement->first_pixmap = pixmap;
+ return;
+ }
+ // Resize the array if needed.
+ size_t old_size = kv_size(placement->pixmaps_beyond_the_first);
+ if (old_size < index - 1) {
+ kv_a(Pixmap, placement->pixmaps_beyond_the_first, index - 2);
+ for (size_t i = old_size; i < index - 1; i++)
+ kv_A(placement->pixmaps_beyond_the_first, i) = 0;
+ }
+ kv_A(placement->pixmaps_beyond_the_first, index - 2) = pixmap;
+}
+
+/// Finds the image corresponding to the client id. Returns NULL if cannot find.
+static Image *gr_find_image(uint32_t image_id) {
+ khiter_t k = kh_get(id2image, images, image_id);
+ if (k == kh_end(images))
+ return NULL;
+ Image *res = kh_value(images, k);
+ return res;
+}
+
+/// Finds the newest image corresponding to the image number. Returns NULL if
+/// cannot find.
+static Image *gr_find_image_by_number(uint32_t image_number) {
+ if (image_number == 0)
+ return NULL;
+ Image *newest_img = NULL;
+ Image *img = NULL;
+ kh_foreach_value(images, img, {
+ if (img->image_number == image_number &&
+ (!newest_img || newest_img->global_command_index <
+ img->global_command_index))
+ newest_img = img;
+ });
+ if (!newest_img)
+ GR_LOG("Image number %u not found\n", image_number);
+ else
+ GR_LOG("Found image number %u, its id is %u\n", image_number,
+ img->image_id);
+ return newest_img;
+}
+
+/// Finds the placement corresponding to the id. If the placement id is 0,
+/// returns some default placement.
+static ImagePlacement *gr_find_placement(Image *img, uint32_t placement_id) {
+ if (!img)
+ return NULL;
+ if (placement_id == 0) {
+ // Try to get the default placement.
+ ImagePlacement *dflt = NULL;
+ if (img->default_placement != 0)
+ dflt = gr_find_placement(img, img->default_placement);
+ if (dflt)
+ return dflt;
+ // If there is no default placement, return the first one and
+ // set it as the default.
+ kh_foreach_value(img->placements, dflt, {
+ img->default_placement = dflt->placement_id;
+ return dflt;
+ });
+ // If there are no placements, return NULL.
+ return NULL;
+ }
+ khiter_t k = kh_get(id2placement, img->placements, placement_id);
+ if (k == kh_end(img->placements))
+ return NULL;
+ ImagePlacement *res = kh_value(img->placements, k);
+ return res;
+}
+
+/// Finds the placement by image id and placement id.
+static ImagePlacement *gr_find_image_and_placement(uint32_t image_id,
+ uint32_t placement_id) {
+ return gr_find_placement(gr_find_image(image_id), placement_id);
+}
+
+/// Writes the name of the on-disk cache file to `out`. `max_len` should be the
+/// size of `out`. The name will be something like
+/// "/tmp/st-images-xxx/img-ID-FRAME".
+static void gr_get_frame_filename(ImageFrame *frame, char *out,
+ size_t max_len) {
+ snprintf(out, max_len, "%s/img-%.3u-%.3u", cache_dir,
+ frame->image->image_id, frame->index);
+}
+
+/// Returns the (estimation) of the RAM size used by the frame right now.
+static unsigned gr_frame_current_ram_size(ImageFrame *frame) {
+ if (!frame->imlib_object)
+ return 0;
+ return (unsigned)frame->image->pix_width * frame->image->pix_height * 4;
+}
+
+/// Returns the (estimation) of the RAM size used by a single frame pixmap.
+static unsigned gr_placement_single_frame_ram_size(ImagePlacement *placement) {
+ return (unsigned)placement->rows * placement->cols *
+ placement->scaled_ch * placement->scaled_cw * 4;
+}
+
+/// Returns the (estimation) of the RAM size used by the placemenet right now.
+static unsigned gr_placement_current_ram_size(ImagePlacement *placement) {
+ unsigned single_frame_size =
+ gr_placement_single_frame_ram_size(placement);
+ unsigned result = 0;
+ foreach_pixmap(*placement, pixmap, {
+ if (pixmap)
+ result += single_frame_size;
+ });
+ return result;
+}
+
+/// Unload the frame from RAM (i.e. delete the corresponding imlib object).
+/// If the on-disk file of the frame is preserved, it can be reloaded later.
+static void gr_unload_frame(ImageFrame *frame) {
+ if (!frame->imlib_object)
+ return;
+
+ unsigned frame_ram_size = gr_frame_current_ram_size(frame);
+ images_ram_size -= frame_ram_size;
+
+ imlib_context_set_image(frame->imlib_object);
+ imlib_free_image_and_decache();
+ frame->imlib_object = NULL;
+
+ GR_LOG("After unloading image %u frame %u (atime %ld ms ago) "
+ "ram: %ld KiB (- %u KiB)\n",
+ frame->image->image_id, frame->index,
+ drawing_start_time - frame->atime, images_ram_size / 1024,
+ frame_ram_size / 1024);
+}
+
+/// Unload all frames of the image.
+static void gr_unload_all_frames(Image *img) {
+ foreach_frame(*img, frame, {
+ gr_unload_frame(frame);
+ });
+}
+
+/// Unload the placement from RAM (i.e. free all of the corresponding pixmaps).
+/// If the on-disk files or imlib objects of the corresponding image are
+/// preserved, the placement can be reloaded later.
+static void gr_unload_placement(ImagePlacement *placement) {
+ unsigned placement_ram_size = gr_placement_current_ram_size(placement);
+ images_ram_size -= placement_ram_size;
+
+ Display *disp = imlib_context_get_display();
+ foreach_pixmap(*placement, pixmap, {
+ if (pixmap)
+ XFreePixmap(disp, pixmap);
+ });
+
+ placement->first_pixmap = 0;
+ placement->pixmaps_beyond_the_first.n = 0;
+ placement->scaled_ch = placement->scaled_cw = 0;
+
+ GR_LOG("After unloading placement %u/%u (atime %ld ms ago) "
+ "ram: %ld KiB (- %u KiB)\n",
+ placement->image->image_id, placement->placement_id,
+ drawing_start_time - placement->atime, images_ram_size / 1024,
+ placement_ram_size / 1024);
+}
+
+/// Unload a single pixmap of the placement from RAM.
+static void gr_unload_pixmap(ImagePlacement *placement, int frameidx) {
+ Pixmap pixmap = gr_get_frame_pixmap(placement, frameidx);
+ if (!pixmap)
+ return;
+
+ Display *disp = imlib_context_get_display();
+ XFreePixmap(disp, pixmap);
+ gr_set_frame_pixmap(placement, frameidx, 0);
+ images_ram_size -= gr_placement_single_frame_ram_size(placement);
+
+ GR_LOG("After unloading pixmap %ld of "
+ "placement %u/%u (atime %ld ms ago) "
+ "frame %u (atime %ld ms ago) "
+ "ram: %ld KiB (- %u KiB)\n",
+ pixmap, placement->image->image_id, placement->placement_id,
+ drawing_start_time - placement->atime, frameidx,
+ drawing_start_time -
+ gr_get_frame(placement->image, frameidx)->atime,
+ images_ram_size / 1024,
+ gr_placement_single_frame_ram_size(placement) / 1024);
+}
+
+/// Deletes the on-disk cache file corresponding to the frame. The in-ram image
+/// object (if it exists) is not deleted, placements are not unloaded either.
+static void gr_delete_imagefile(ImageFrame *frame) {
+ // It may still be being loaded. Close the file in this case.
+ if (frame->open_file) {
+ fclose(frame->open_file);
+ frame->open_file = NULL;
+ }
+
+ if (frame->disk_size == 0)
+ return;
+
+ char filename[MAX_FILENAME_SIZE];
+ gr_get_frame_filename(frame, filename, MAX_FILENAME_SIZE);
+ remove(filename);
+
+ unsigned disk_size = frame->disk_size;
+ images_disk_size -= disk_size;
+ frame->image->total_disk_size -= disk_size;
+ frame->disk_size = 0;
+
+ GR_LOG("After deleting image file %u frame %u (atime %ld ms ago) "
+ "disk: %ld KiB (- %u KiB)\n",
+ frame->image->image_id, frame->index,
+ drawing_start_time - frame->atime, images_disk_size / 1024,
+ disk_size / 1024);
+}
+
+/// Deletes all on-disk cache files of the image (for each frame).
+static void gr_delete_imagefiles(Image *img) {
+ foreach_frame(*img, frame, {
+ gr_delete_imagefile(frame);
+ });
+}
+
+/// Deletes the given placement: unloads, frees the object, but doesn't change
+/// the `placements` hash table.
+static void gr_delete_placement_keep_id(ImagePlacement *placement) {
+ if (!placement)
+ return;
+ GR_LOG("Deleting placement %u/%u\n", placement->image->image_id,
+ placement->placement_id);
+ gr_unload_placement(placement);
+ kv_destroy(placement->pixmaps_beyond_the_first);
+ free(placement);
+ total_placement_count--;
+}
+
+/// Deletes all placements of `img`.
+static void gr_delete_all_placements(Image *img) {
+ ImagePlacement *placement = NULL;
+ kh_foreach_value(img->placements, placement, {
+ gr_delete_placement_keep_id(placement);
+ });
+ kh_clear(id2placement, img->placements);
+}
+
+/// Deletes the given image: unloads, deletes the file, frees the Image object,
+/// but doesn't change the `images` hash table.
+static void gr_delete_image_keep_id(Image *img) {
+ if (!img)
+ return;
+ GR_LOG("Deleting image %u\n", img->image_id);
+ foreach_frame(*img, frame, {
+ gr_delete_imagefile(frame);
+ gr_unload_frame(frame);
+ });
+ kv_destroy(img->frames_beyond_the_first);
+ gr_delete_all_placements(img);
+ kh_destroy(id2placement, img->placements);
+ free(img);
+}
+
+/// Deletes the given image: unloads, deletes the file, frees the Image object,
+/// and also removes it from `images`.
+static void gr_delete_image(Image *img) {
+ if (!img)
+ return;
+ uint32_t id = img->image_id;
+ gr_delete_image_keep_id(img);
+ khiter_t k = kh_get(id2image, images, id);
+ kh_del(id2image, images, k);
+}
+
+/// Deletes the given placement: unloads, frees the object, and also removes it
+/// from `placements`.
+static void gr_delete_placement(ImagePlacement *placement) {
+ if (!placement)
+ return;
+ uint32_t id = placement->placement_id;
+ Image *img = placement->image;
+ gr_delete_placement_keep_id(placement);
+ khiter_t k = kh_get(id2placement, img->placements, id);
+ kh_del(id2placement, img->placements, k);
+}
+
+/// Deletes all images and clears `images`.
+static void gr_delete_all_images() {
+ Image *img = NULL;
+ kh_foreach_value(images, img, {
+ gr_delete_image_keep_id(img);
+ });
+ kh_clear(id2image, images);
+}
+
+/// Update the atime of the image.
+static void gr_touch_image(Image *img) {
+ img->atime = gr_now_ms();
+}
+
+/// Update the atime of the frame.
+static void gr_touch_frame(ImageFrame *frame) {
+ frame->image->atime = frame->atime = gr_now_ms();
+}
+
+/// Update the atime of the placement. Touches the images too.
+static void gr_touch_placement(ImagePlacement *placement) {
+ placement->image->atime = placement->atime = gr_now_ms();
+}
+
+/// Creates a new image with the given id. If an image with that id already
+/// exists, it is deleted first. If the provided id is 0, generates a
+/// random id.
+static Image *gr_new_image(uint32_t id) {
+ if (id == 0) {
+ do {
+ id = rand();
+ // Avoid IDs that don't need full 32 bits.
+ } while ((id & 0xFF000000) == 0 || (id & 0x00FFFF00) == 0 ||
+ gr_find_image(id));
+ GR_LOG("Generated random image id %u\n", id);
+ }
+ Image *img = gr_find_image(id);
+ gr_delete_image_keep_id(img);
+ GR_LOG("Creating image %u\n", id);
+ img = malloc(sizeof(Image));
+ memset(img, 0, sizeof(Image));
+ img->placements = kh_init(id2placement);
+ int ret;
+ khiter_t k = kh_put(id2image, images, id, &ret);
+ kh_value(images, k) = img;
+ img->image_id = id;
+ gr_touch_image(img);
+ img->global_command_index = global_command_counter;
+ return img;
+}
+
+/// Creates a new frame at the end of the frame array. It may be the first frame
+/// if there are no frames yet.
+static ImageFrame *gr_append_new_frame(Image *img) {
+ ImageFrame *frame = NULL;
+ if (img->first_frame.index == 0 &&
+ kv_size(img->frames_beyond_the_first) == 0) {
+ frame = &img->first_frame;
+ frame->index = 1;
+ } else {
+ frame = kv_pushp(ImageFrame, img->frames_beyond_the_first);
+ memset(frame, 0, sizeof(ImageFrame));
+ frame->index = kv_size(img->frames_beyond_the_first) + 1;
+ }
+ frame->image = img;
+ gr_touch_frame(frame);
+ GR_LOG("Appending frame %d to image %u\n", frame->index, img->image_id);
+ return frame;
+}
+
+/// Creates a new placement with the given id. If a placement with that id
+/// already exists, it is deleted first. If the provided id is 0, generates a
+/// random id.
+static ImagePlacement *gr_new_placement(Image *img, uint32_t id) {
+ if (id == 0) {
+ do {
+ // Currently we support only 24-bit IDs.
+ id = rand() & 0xFFFFFF;
+ // Avoid IDs that need only one byte.
+ } while ((id & 0x00FFFF00) == 0 || gr_find_placement(img, id));
+ }
+ ImagePlacement *placement = gr_find_placement(img, id);
+ gr_delete_placement_keep_id(placement);
+ GR_LOG("Creating placement %u/%u\n", img->image_id, id);
+ placement = malloc(sizeof(ImagePlacement));
+ memset(placement, 0, sizeof(ImagePlacement));
+ total_placement_count++;
+ int ret;
+ khiter_t k = kh_put(id2placement, img->placements, id, &ret);
+ kh_value(img->placements, k) = placement;
+ placement->image = img;
+ placement->placement_id = id;
+ gr_touch_placement(placement);
+ if (img->default_placement == 0)
+ img->default_placement = id;
+ return placement;
+}
+
+static int64_t ceil_div(int64_t a, int64_t b) {
+ return (a + b - 1) / b;
+}
+
+/// Computes the best number of rows and columns for a placement if it's not
+/// specified, and also adjusts the source rectangle size.
+static void gr_infer_placement_size_maybe(ImagePlacement *placement) {
+ // The size of the image.
+ int image_pix_width = placement->image->pix_width;
+ int image_pix_height = placement->image->pix_height;
+ // Negative values are not allowed. Quietly set them to 0.
+ if (placement->src_pix_x < 0)
+ placement->src_pix_x = 0;
+ if (placement->src_pix_y < 0)
+ placement->src_pix_y = 0;
+ if (placement->src_pix_width < 0)
+ placement->src_pix_width = 0;
+ if (placement->src_pix_height < 0)
+ placement->src_pix_height = 0;
+ // If the source rectangle is outside the image, truncate it.
+ if (placement->src_pix_x > image_pix_width)
+ placement->src_pix_x = image_pix_width;
+ if (placement->src_pix_y > image_pix_height)
+ placement->src_pix_y = image_pix_height;
+ // If the source rectangle is not specified, use the whole image. If
+ // it's partially outside the image, truncate it.
+ if (placement->src_pix_width == 0 ||
+ placement->src_pix_x + placement->src_pix_width > image_pix_width)
+ placement->src_pix_width =
+ image_pix_width - placement->src_pix_x;
+ if (placement->src_pix_height == 0 ||
+ placement->src_pix_y + placement->src_pix_height > image_pix_height)
+ placement->src_pix_height =
+ image_pix_height - placement->src_pix_y;
+
+ if (placement->cols != 0 && placement->rows != 0)
+ return;
+ if (placement->src_pix_width == 0 || placement->src_pix_height == 0)
+ return;
+ if (current_cw == 0 || current_ch == 0)
+ return;
+
+ // If no size is specified, use the image size.
+ if (placement->cols == 0 && placement->rows == 0) {
+ placement->cols =
+ ceil_div(placement->src_pix_width, current_cw);
+ placement->rows =
+ ceil_div(placement->src_pix_height, current_ch);
+ return;
+ }
+
+ // Some applications specify only one of the dimensions.
+ if (placement->scale_mode == SCALE_MODE_CONTAIN) {
+ // If we preserve aspect ratio and fit to width/height, the most
+ // logical thing is to find the minimum size of the
+ // non-specified dimension that allows the image to fit the
+ // specified dimension.
+ if (placement->cols == 0) {
+ placement->cols = ceil_div(
+ placement->src_pix_width * placement->rows *
+ current_ch,
+ placement->src_pix_height * current_cw);
+ return;
+ }
+ if (placement->rows == 0) {
+ placement->rows =
+ ceil_div(placement->src_pix_height *
+ placement->cols * current_cw,
+ placement->src_pix_width * current_ch);
+ return;
+ }
+ } else {
+ // Otherwise we stretch the image or preserve the original size.
+ // In both cases we compute the best number of columns from the
+ // pixel size and cell size.
+ // TODO: In the case of stretching it's not the most logical
+ // thing to do, may need to revisit in the future.
+ // Currently we switch to SCALE_MODE_CONTAIN when only one
+ // of the dimensions is specified, so this case shouldn't
+ // happen in practice.
+ if (!placement->cols)
+ placement->cols =
+ ceil_div(placement->src_pix_width, current_cw);
+ if (!placement->rows)
+ placement->rows =
+ ceil_div(placement->src_pix_height, current_ch);
+ }
+}
+
+/// Adjusts the current frame index if enough time has passed since the display
+/// of the current frame. Also computes the time of the next redraw of this
+/// image (`img->next_redraw`). The current time is passed as an argument so
+/// that all animations are in sync.
+static void gr_update_frame_index(Image *img, Milliseconds now) {
+ if (img->current_frame == 0) {
+ img->current_frame_time = now;
+ img->current_frame = 1;
+ img->next_redraw = now + MAX(1, img->first_frame.gap);
+ return;
+ }
+ // If the animation is stopped, show the current frame.
+ if (!img->animation_state ||
+ img->animation_state == ANIMATION_STATE_STOPPED ||
+ img->animation_state == ANIMATION_STATE_UNSET) {
+ // The next redraw is never (unless the state is changed).
+ img->next_redraw = 0;
+ return;
+ }
+ int last_uploaded_frame_index = gr_last_uploaded_frame_index(img);
+ // If we are loading and we reached the last frame, show the last frame.
+ if (img->animation_state == ANIMATION_STATE_LOADING &&
+ img->current_frame == last_uploaded_frame_index) {
+ // The next redraw is never (unless the state is changed or
+ // frames are added).
+ img->next_redraw = 0;
+ return;
+ }
+
+ // Check how many milliseconds passed since the current frame was shown.
+ int passed_ms = now - img->current_frame_time;
+ // If the animation is looping and too much time has passes, we can
+ // make a shortcut.
+ if (img->animation_state == ANIMATION_STATE_LOOPING &&
+ img->total_duration > 0 && passed_ms >= img->total_duration) {
+ passed_ms %= img->total_duration;
+ img->current_frame_time = now - passed_ms;
+ }
+ // Find the next frame.
+ int original_frame_index = img->current_frame;
+ while (1) {
+ ImageFrame *frame = gr_get_frame(img, img->current_frame);
+ if (!frame) {
+ // The frame doesn't exist, go to the first frame.
+ img->current_frame = 1;
+ img->current_frame_time = now;
+ img->next_redraw = now + MAX(1, img->first_frame.gap);
+ return;
+ }
+ if (frame->gap >= 0 && passed_ms < frame->gap) {
+ // Not enough time has passed, we are still in the same
+ // frame, and it's not a gapless frame.
+ img->next_redraw =
+ img->current_frame_time + MAX(1, frame->gap);
+ return;
+ }
+ // Otherwise go to the next frame.
+ passed_ms -= MAX(0, frame->gap);
+ if (img->current_frame >= last_uploaded_frame_index) {
+ // It's the last frame, if the animation is loading,
+ // remain on it.
+ if (img->animation_state == ANIMATION_STATE_LOADING) {
+ img->next_redraw = 0;
+ return;
+ }
+ // Otherwise the animation is looping.
+ img->current_frame = 1;
+ // TODO: Support finite number of loops.
+ } else {
+ img->current_frame++;
+ }
+ // Make sure we don't get stuck in an infinite loop.
+ if (img->current_frame == original_frame_index) {
+ // We looped through all frames, but haven't reached the
+ // next frame yet. This may happen if too much time has
+ // passed since the last redraw or all the frames are
+ // gapless. Just move on to the next frame.
+ img->current_frame++;
+ if (img->current_frame >
+ last_uploaded_frame_index)
+ img->current_frame = 1;
+ img->current_frame_time = now;
+ img->next_redraw = now + MAX(
+ 1, gr_get_frame(img, img->current_frame)->gap);
+ return;
+ }
+ // Adjust the start time of the frame. The next redraw time will
+ // be set in the next iteration.
+ img->current_frame_time += MAX(0, frame->gap);
+ }
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// Unloading and deleting images to save resources.
+////////////////////////////////////////////////////////////////////////////////
+
+/// A helper to compare frames by atime for qsort.
+static int gr_cmp_frames_by_atime(const void *a, const void *b) {
+ ImageFrame *frame_a = *(ImageFrame *const *)a;
+ ImageFrame *frame_b = *(ImageFrame *const *)b;
+ if (frame_a->atime == frame_b->atime)
+ return frame_a->image->global_command_index -
+ frame_b->image->global_command_index;
+ return frame_a->atime - frame_b->atime;
+}
+
+/// A helper to compare images by atime for qsort.
+static int gr_cmp_images_by_atime(const void *a, const void *b) {
+ Image *img_a = *(Image *const *)a;
+ Image *img_b = *(Image *const *)b;
+ if (img_a->atime == img_b->atime)
+ return img_a->global_command_index -
+ img_b->global_command_index;
+ return img_a->atime - img_b->atime;
+}
+
+/// A helper to compare placements by atime for qsort.
+static int gr_cmp_placements_by_atime(const void *a, const void *b) {
+ ImagePlacement *p_a = *(ImagePlacement **)a;
+ ImagePlacement *p_b = *(ImagePlacement **)b;
+ if (p_a->atime == p_b->atime)
+ return p_a->image->global_command_index -
+ p_b->image->global_command_index;
+ return p_a->atime - p_b->atime;
+}
+
+typedef kvec_t(Image *) ImageVec;
+typedef kvec_t(ImagePlacement *) ImagePlacementVec;
+typedef kvec_t(ImageFrame *) ImageFrameVec;
+
+/// Returns an array of pointers to all images sorted by atime.
+static ImageVec gr_get_images_sorted_by_atime() {
+ ImageVec vec;
+ kv_init(vec);
+ if (kh_size(images) == 0)
+ return vec;
+ kv_resize(Image *, vec, kh_size(images));
+ Image *img = NULL;
+ kh_foreach_value(images, img, { kv_push(Image *, vec, img); });
+ qsort(vec.a, kv_size(vec), sizeof(Image *), gr_cmp_images_by_atime);
+ return vec;
+}
+
+/// Returns an array of pointers to all placements sorted by atime.
+static ImagePlacementVec gr_get_placements_sorted_by_atime() {
+ ImagePlacementVec vec;
+ kv_init(vec);
+ if (total_placement_count == 0)
+ return vec;
+ kv_resize(ImagePlacement *, vec, total_placement_count);
+ Image *img = NULL;
+ ImagePlacement *placement = NULL;
+ kh_foreach_value(images, img, {
+ kh_foreach_value(img->placements, placement, {
+ kv_push(ImagePlacement *, vec, placement);
+ });
+ });
+ qsort(vec.a, kv_size(vec), sizeof(ImagePlacement *),
+ gr_cmp_placements_by_atime);
+ return vec;
+}
+
+/// Returns an array of pointers to all frames sorted by atime.
+static ImageFrameVec gr_get_frames_sorted_by_atime() {
+ ImageFrameVec frames;
+ kv_init(frames);
+ Image *img = NULL;
+ kh_foreach_value(images, img, {
+ foreach_frame(*img, frame, {
+ kv_push(ImageFrame *, frames, frame);
+ });
+ });
+ qsort(frames.a, kv_size(frames), sizeof(ImageFrame *),
+ gr_cmp_frames_by_atime);
+ return frames;
+}
+
+/// An object that can be unloaded from RAM.
+typedef struct {
+ /// Some score, probably based on access time. The lower the score, the
+ /// more likely that the object should be unloaded.
+ int64_t score;
+ union {
+ ImagePlacement *placement;
+ ImageFrame *frame;
+ };
+ /// If zero, the object is the imlib object of `frame`, if non-zero,
+ /// the object is a pixmap of `frameidx`-th frame of `placement`.
+ int frameidx;
+} UnloadableObject;
+
+typedef kvec_t(UnloadableObject) UnloadableObjectVec;
+
+/// A helper to compare unloadable objects by score for qsort.
+static int gr_cmp_unloadable_objects(const void *a, const void *b) {
+ UnloadableObject *obj_a = (UnloadableObject *)a;
+ UnloadableObject *obj_b = (UnloadableObject *)b;
+ return obj_a->score - obj_b->score;
+}
+
+/// Unloads an unloadable object from RAM.
+static void gr_unload_object(UnloadableObject *obj) {
+ if (obj->frameidx) {
+ if (obj->placement->protected_frame == obj->frameidx)
+ return;
+ gr_unload_pixmap(obj->placement, obj->frameidx);
+ } else {
+ gr_unload_frame(obj->frame);
+ }
+}
+
+/// Returns the recency threshold for an image. Frames that were accessed within
+/// this threshold from now are considered recent and may be handled
+/// differently because we may need them again very soon.
+static Milliseconds gr_recency_threshold(Image *img) {
+ return img->total_duration * 2 + 1000;
+}
+
+/// Creates an unloadable object for the imlib object of a frame.
+static UnloadableObject gr_unloadable_object_for_frame(Milliseconds now,
+ ImageFrame *frame) {
+ UnloadableObject obj = {0};
+ obj.frameidx = 0;
+ obj.frame = frame;
+ Milliseconds atime = frame->atime;
+ obj.score = atime;
+ if (atime >= now - gr_recency_threshold(frame->image)) {
+ // This is a recent frame, probably from an active animation.
+ // Score it above `now` to prefer unloading non-active frames.
+ // Randomize the score because it's not very clear in which
+ // order we want to unload them: reloading a frame may require
+ // reloading other frames.
+ obj.score = now + 1000 + rand() % 1000;
+ }
+ return obj;
+}
+
+/// Creates an unloadable object for a pixmap.
+static UnloadableObject
+gr_unloadable_object_for_pixmap(Milliseconds now, ImageFrame *frame,
+ ImagePlacement *placement) {
+ UnloadableObject obj = {0};
+ obj.frameidx = frame->index;
+ obj.placement = placement;
+ obj.score = placement->atime;
+ // Since we don't store pixmap atimes, use the
+ // oldest atime of the frame and the placement.
+ Milliseconds atime = MIN(placement->atime, frame->atime);
+ obj.score = atime;
+ if (atime >= now - gr_recency_threshold(frame->image)) {
+ // This is a recent pixmap, probably from an active animation.
+ // Score it above `now` to prefer unloading non-active frames.
+ // Also assign higher scores to frames that are closer to the
+ // current frame (more likely to be used soon).
+ int num_frames = gr_last_frame_index(frame->image);
+ int dist = frame->index - frame->image->current_frame;
+ if (dist < 0)
+ dist += num_frames;
+ obj.score =
+ now + 1000 + (num_frames - dist) * 1000 / num_frames;
+ // If the pixmap is much larger than the imlib image, prefer to
+ // unload the pixmap by adding up to -1000 to the score. If the
+ // imlib image is larger, add up to +1000.
+ float imlib_size = gr_frame_current_ram_size(frame);
+ float pixmap_size =
+ gr_placement_single_frame_ram_size(placement);
+ obj.score +=
+ 2000 * (imlib_size / (imlib_size + pixmap_size) - 0.5);
+ }
+ return obj;
+}
+
+/// Returns an array of unloadable objects sorted by score.
+static UnloadableObjectVec
+gr_get_unloadable_objects_sorted_by_score(Milliseconds now) {
+ UnloadableObjectVec objects;
+ kv_init(objects);
+ Image *img = NULL;
+ ImagePlacement *placement = NULL;
+ kh_foreach_value(images, img, {
+ foreach_frame(*img, frame, {
+ if (!frame->imlib_object)
+ continue;
+ kv_push(UnloadableObject, objects,
+ gr_unloadable_object_for_frame(now, frame));
+ int frameidx = frame->index;
+ kh_foreach_value(img->placements, placement, {
+ if (!gr_get_frame_pixmap(placement, frameidx))
+ continue;
+ kv_push(UnloadableObject, objects,
+ gr_unloadable_object_for_pixmap(
+ now, frame, placement));
+ });
+ });
+ });
+ qsort(objects.a, kv_size(objects), sizeof(UnloadableObject),
+ gr_cmp_unloadable_objects);
+ return objects;
+}
+
+/// Returns the limit adjusted by the excess tolerance ratio.
+static inline unsigned apply_tolerance(unsigned limit) {
+ return limit + (unsigned)(limit * graphics_excess_tolerance_ratio);
+}
+
+/// Checks RAM and disk cache limits and deletes/unloads some images.
+static void gr_check_limits() {
+ Milliseconds now = gr_now_ms();
+ ImageVec images_sorted = {0};
+ ImagePlacementVec placements_sorted = {0};
+ ImageFrameVec frames_sorted = {0};
+ UnloadableObjectVec objects_sorted = {0};
+ int images_begin = 0;
+ int placements_begin = 0;
+ char changed = 0;
+ // First reduce the number of images if there are too many.
+ if (kh_size(images) > apply_tolerance(graphics_max_total_placements)) {
+ GR_LOG("Too many images: %d\n", kh_size(images));
+ changed = 1;
+ images_sorted = gr_get_images_sorted_by_atime();
+ int to_delete = kv_size(images_sorted) -
+ graphics_max_total_placements;
+ for (; images_begin < to_delete; images_begin++)
+ gr_delete_image(images_sorted.a[images_begin]);
+ }
+ // Then reduce the number of placements if there are too many.
+ if (total_placement_count >
+ apply_tolerance(graphics_max_total_placements)) {
+ GR_LOG("Too many placements: %d\n", total_placement_count);
+ changed = 1;
+ placements_sorted = gr_get_placements_sorted_by_atime();
+ int to_delete = kv_size(placements_sorted) -
+ graphics_max_total_placements;
+ for (; placements_begin < to_delete; placements_begin++) {
+ ImagePlacement *placement =
+ placements_sorted.a[placements_begin];
+ if (placement->protected_frame)
+ break;
+ gr_delete_placement(placement);
+ }
+ }
+ // Then reduce the size of the image file cache. The files correspond to
+ // image frames.
+ if (images_disk_size >
+ apply_tolerance(graphics_total_file_cache_size)) {
+ GR_LOG("Too big disk cache: %ld KiB\n",
+ images_disk_size / 1024);
+ changed = 1;
+ frames_sorted = gr_get_frames_sorted_by_atime();
+ for (int i = 0; i < kv_size(frames_sorted); i++) {
+ if (images_disk_size <= graphics_total_file_cache_size)
+ break;
+ gr_delete_imagefile(kv_A(frames_sorted, i));
+ }
+ }
+ // Then unload images from RAM.
+ if (images_ram_size > apply_tolerance(graphics_max_total_ram_size)) {
+ changed = 1;
+ int frames_begin = 0;
+ GR_LOG("Too much ram: %ld KiB\n", images_ram_size / 1024);
+ objects_sorted = gr_get_unloadable_objects_sorted_by_score(now);
+ for (int i = 0; i < kv_size(objects_sorted); i++) {
+ if (images_ram_size <= graphics_max_total_ram_size)
+ break;
+ gr_unload_object(&kv_A(objects_sorted, i));
+ }
+ }
+ if (changed) {
+ GR_LOG("After cleaning: ram: %ld KiB disk: %ld KiB "
+ "img count: %d placement count: %d\n",
+ images_ram_size / 1024, images_disk_size / 1024,
+ kh_size(images), total_placement_count);
+ }
+ kv_destroy(images_sorted);
+ kv_destroy(placements_sorted);
+ kv_destroy(frames_sorted);
+ kv_destroy(objects_sorted);
+}
+
+/// Unloads all images by user request.
+void gr_unload_images_to_reduce_ram() {
+ Image *img = NULL;
+ ImagePlacement *placement = NULL;
+ kh_foreach_value(images, img, {
+ kh_foreach_value(img->placements, placement, {
+ if (placement->protected_frame)
+ continue;
+ gr_unload_placement(placement);
+ });
+ gr_unload_all_frames(img);
+ });
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// Image loading.
+////////////////////////////////////////////////////////////////////////////////
+
+/// Copies `num_pixels` pixels (not bytes!) from a buffer `from` to an imlib2
+/// image data `to`. The format may be 24 (RGB) or 32 (RGBA), and it's converted
+/// to imlib2's representation, which is 0xAARRGGBB (having BGRA memory layout
+/// on little-endian architectures).
+static inline void gr_copy_pixels(DATA32 *to, unsigned char *from, int format,
+ size_t num_pixels) {
+ size_t pixel_size = format == 24 ? 3 : 4;
+ if (format == 32) {
+ for (unsigned i = 0; i < num_pixels; ++i) {
+ unsigned byte_i = i * pixel_size;
+ to[i] = ((DATA32)from[byte_i + 2]) |
+ ((DATA32)from[byte_i + 1]) << 8 |
+ ((DATA32)from[byte_i]) << 16 |
+ ((DATA32)from[byte_i + 3]) << 24;
+ }
+ } else {
+ for (unsigned i = 0; i < num_pixels; ++i) {
+ unsigned byte_i = i * pixel_size;
+ to[i] = ((DATA32)from[byte_i + 2]) |
+ ((DATA32)from[byte_i + 1]) << 8 |
+ ((DATA32)from[byte_i]) << 16 | 0xFF000000;
+ }
+ }
+}
+
+/// Loads uncompressed RGB or RGBA image data from a file.
+static void gr_load_raw_pixel_data_uncompressed(DATA32 *data, FILE *file,
+ int format,
+ size_t total_pixels) {
+ unsigned char chunk[BUFSIZ];
+ size_t pixel_size = format == 24 ? 3 : 4;
+ size_t chunk_size_pix = BUFSIZ / 4;
+ size_t chunk_size_bytes = chunk_size_pix * pixel_size;
+ size_t bytes = total_pixels * pixel_size;
+ for (size_t chunk_start_pix = 0; chunk_start_pix < total_pixels;
+ chunk_start_pix += chunk_size_pix) {
+ size_t read_size = fread(chunk, 1, chunk_size_bytes, file);
+ size_t read_pixels = read_size / pixel_size;
+ if (chunk_start_pix + read_pixels > total_pixels)
+ read_pixels = total_pixels - chunk_start_pix;
+ gr_copy_pixels(data + chunk_start_pix, chunk, format,
+ read_pixels);
+ }
+}
+
+#define COMPRESSED_CHUNK_SIZE BUFSIZ
+#define DECOMPRESSED_CHUNK_SIZE (BUFSIZ * 4)
+
+/// Loads compressed RGB or RGBA image data from a file.
+static int gr_load_raw_pixel_data_compressed(DATA32 *data, FILE *file,
+ int format, size_t total_pixels) {
+ size_t pixel_size = format == 24 ? 3 : 4;
+ unsigned char compressed_chunk[COMPRESSED_CHUNK_SIZE];
+ unsigned char decompressed_chunk[DECOMPRESSED_CHUNK_SIZE];
+
+ z_stream strm;
+ strm.zalloc = Z_NULL;
+ strm.zfree = Z_NULL;
+ strm.opaque = Z_NULL;
+ strm.next_out = decompressed_chunk;
+ strm.avail_out = DECOMPRESSED_CHUNK_SIZE;
+ strm.avail_in = 0;
+ strm.next_in = Z_NULL;
+ int ret = inflateInit(&strm);
+ if (ret != Z_OK)
+ return 1;
+
+ int error = 0;
+ int progress = 0;
+ size_t total_copied_pixels = 0;
+ while (1) {
+ // If we don't have enough data in the input buffer, try to read
+ // from the file.
+ if (strm.avail_in <= COMPRESSED_CHUNK_SIZE / 4) {
+ // Move the existing data to the beginning.
+ memmove(compressed_chunk, strm.next_in, strm.avail_in);
+ strm.next_in = compressed_chunk;
+ // Read more data.
+ size_t bytes_read = fread(
+ compressed_chunk + strm.avail_in, 1,
+ COMPRESSED_CHUNK_SIZE - strm.avail_in, file);
+ strm.avail_in += bytes_read;
+ if (bytes_read != 0)
+ progress = 1;
+ }
+
+ // Try to inflate the data.
+ int ret = inflate(&strm, Z_SYNC_FLUSH);
+ if (ret == Z_MEM_ERROR || ret == Z_DATA_ERROR) {
+ error = 1;
+ fprintf(stderr,
+ "error: could not decompress the image, error "
+ "%s\n",
+ ret == Z_MEM_ERROR ? "Z_MEM_ERROR"
+ : "Z_DATA_ERROR");
+ break;
+ }
+
+ // Copy the data from the output buffer to the image.
+ size_t full_pixels =
+ (DECOMPRESSED_CHUNK_SIZE - strm.avail_out) / pixel_size;
+ // Make sure we don't overflow the image.
+ if (full_pixels > total_pixels - total_copied_pixels)
+ full_pixels = total_pixels - total_copied_pixels;
+ if (full_pixels > 0) {
+ // Copy pixels.
+ gr_copy_pixels(data, decompressed_chunk, format,
+ full_pixels);
+ data += full_pixels;
+ total_copied_pixels += full_pixels;
+ if (total_copied_pixels >= total_pixels) {
+ // We filled the whole image, there may be some
+ // data left, but we just truncate it.
+ break;
+ }
+ // Move the remaining data to the beginning.
+ size_t copied_bytes = full_pixels * pixel_size;
+ size_t leftover =
+ (DECOMPRESSED_CHUNK_SIZE - strm.avail_out) -
+ copied_bytes;
+ memmove(decompressed_chunk,
+ decompressed_chunk + copied_bytes, leftover);
+ strm.next_out -= copied_bytes;
+ strm.avail_out += copied_bytes;
+ progress = 1;
+ }
+
+ // If we haven't made any progress, then we have reached the end
+ // of both the file and the inflated data.
+ if (!progress)
+ break;
+ progress = 0;
+ }
+
+ inflateEnd(&strm);
+ return error;
+}
+
+#undef COMPRESSED_CHUNK_SIZE
+#undef DECOMPRESSED_CHUNK_SIZE
+
+/// Load the image from a file containing raw pixel data (RGB or RGBA), the data
+/// may be compressed.
+static Imlib_Image gr_load_raw_pixel_data(ImageFrame *frame,
+ const char *filename) {
+ size_t total_pixels = frame->data_pix_width * frame->data_pix_height;
+ if (total_pixels * 4 > graphics_max_single_image_ram_size) {
+ fprintf(stderr,
+ "error: image %u frame %u is too big too load: %zu > %u\n",
+ frame->image->image_id, frame->index, total_pixels * 4,
+ graphics_max_single_image_ram_size);
+ return NULL;
+ }
+
+ FILE* file = fopen(filename, "rb");
+ if (!file) {
+ fprintf(stderr,
+ "error: could not open image file: %s\n",
+ sanitized_filename(filename));
+ return NULL;
+ }
+
+ Imlib_Image image = imlib_create_image(frame->data_pix_width,
+ frame->data_pix_height);
+ if (!image) {
+ fprintf(stderr,
+ "error: could not create an image of size %d x %d\n",
+ frame->data_pix_width, frame->data_pix_height);
+ fclose(file);
+ return NULL;
+ }
+
+ imlib_context_set_image(image);
+ imlib_image_set_has_alpha(1);
+ DATA32* data = imlib_image_get_data();
+
+ // The default format is 32.
+ int format = frame->format ? frame->format : 32;
+
+ if (frame->compression == 0) {
+ gr_load_raw_pixel_data_uncompressed(data, file, format,
+ total_pixels);
+ } else {
+ int ret = gr_load_raw_pixel_data_compressed(data, file, format,
+ total_pixels);
+ if (ret != 0) {
+ imlib_image_put_back_data(data);
+ imlib_free_image();
+ fclose(file);
+ return NULL;
+ }
+ }
+
+ fclose(file);
+ imlib_image_put_back_data(data);
+ return image;
+}
+
+/// Loads the unscaled frame into RAM as an imlib object. The frame imlib object
+/// is fully composed on top of the background frame. If the frame is already
+/// loaded, does nothing. Loading may fail, in which case the status of the
+/// frame will be set to STATUS_RAM_LOADING_ERROR.
+static void gr_load_imlib_object(ImageFrame *frame) {
+ if (frame->imlib_object)
+ return;
+
+ // If the image is uninitialized or uploading has failed, or the file
+ // has been deleted, we cannot load the image.
+ if (frame->status < STATUS_UPLOADING_SUCCESS)
+ return;
+ if (frame->disk_size == 0) {
+ if (frame->status != STATUS_RAM_LOADING_ERROR) {
+ fprintf(stderr,
+ "error: cached image was deleted: %u frame %u\n",
+ frame->image->image_id, frame->index);
+ }
+ frame->status = STATUS_RAM_LOADING_ERROR;
+ return;
+ }
+
+ // Prevent recursive dependences between frames.
+ if (frame->status == STATUS_RAM_LOADING_IN_PROGRESS) {
+ fprintf(stderr,
+ "error: recursive loading of image %u frame %u\n",
+ frame->image->image_id, frame->index);
+ frame->status = STATUS_RAM_LOADING_ERROR;
+ return;
+ }
+ frame->status = STATUS_RAM_LOADING_IN_PROGRESS;
+
+ // Load the background frame if needed. Hopefully it's not recursive.
+ ImageFrame *bg_frame = NULL;
+ if (frame->background_frame_index) {
+ bg_frame = gr_get_frame(frame->image,
+ frame->background_frame_index);
+ if (!bg_frame) {
+ fprintf(stderr,
+ "error: could not find background "
+ "frame %d for image %u frame %d\n",
+ frame->background_frame_index,
+ frame->image->image_id, frame->index);
+ frame->status = STATUS_RAM_LOADING_ERROR;
+ return;
+ }
+ gr_load_imlib_object(bg_frame);
+ if (!bg_frame->imlib_object) {
+ fprintf(stderr,
+ "error: could not load background frame %d for "
+ "image %u frame %d\n",
+ frame->background_frame_index,
+ frame->image->image_id, frame->index);
+ frame->status = STATUS_RAM_LOADING_ERROR;
+ return;
+ }
+ }
+
+ // Load the frame data image.
+ Imlib_Image frame_data_image = NULL;
+ char filename[MAX_FILENAME_SIZE];
+ gr_get_frame_filename(frame, filename, MAX_FILENAME_SIZE);
+ GR_LOG("Loading image: %s\n", sanitized_filename(filename));
+ if (frame->format == 100 || frame->format == 0)
+ frame_data_image = imlib_load_image(filename);
+ if (frame->format == 32 || frame->format == 24 ||
+ (!frame_data_image && frame->format == 0))
+ frame_data_image = gr_load_raw_pixel_data(frame, filename);
+ this_redraw_cycle_loaded_files++;
+
+ if (!frame_data_image) {
+ if (frame->status != STATUS_RAM_LOADING_ERROR) {
+ fprintf(stderr, "error: could not load image: %s\n",
+ sanitized_filename(filename));
+ }
+ frame->status = STATUS_RAM_LOADING_ERROR;
+ return;
+ }
+
+ imlib_context_set_image(frame_data_image);
+ int frame_data_width = imlib_image_get_width();
+ int frame_data_height = imlib_image_get_height();
+ GR_LOG("Successfully loaded, size %d x %d\n", frame_data_width,
+ frame_data_height);
+ // If imlib loading succeeded, and it is the first frame, set the
+ // information about the original image size, unless it's already set.
+ if (frame->index == 1 && frame->image->pix_width == 0 &&
+ frame->image->pix_height == 0) {
+ frame->image->pix_width = frame_data_width;
+ frame->image->pix_height = frame_data_height;
+ }
+
+ int image_width = frame->image->pix_width;
+ int image_height = frame->image->pix_height;
+
+ // Compose the image with the background color or frame.
+ if (frame->background_color != 0 || bg_frame ||
+ image_width != frame_data_width ||
+ image_height != frame_data_height) {
+ GR_LOG("Composing the frame bg = 0x%08X, bgframe = %d\n",
+ frame->background_color, frame->background_frame_index);
+ Imlib_Image composed_image = imlib_create_image(
+ image_width, image_height);
+ imlib_context_set_image(composed_image);
+ imlib_image_set_has_alpha(1);
+ imlib_context_set_anti_alias(0);
+
+ // Start with the background frame or color.
+ imlib_context_set_blend(0);
+ if (bg_frame && bg_frame->imlib_object) {
+ imlib_blend_image_onto_image(
+ bg_frame->imlib_object, 1, 0, 0,
+ image_width, image_height, 0, 0,
+ image_width, image_height);
+ } else {
+ int r = (frame->background_color >> 24) & 0xFF;
+ int g = (frame->background_color >> 16) & 0xFF;
+ int b = (frame->background_color >> 8) & 0xFF;
+ int a = frame->background_color & 0xFF;
+ imlib_context_set_color(r, g, b, a);
+ imlib_image_fill_rectangle(0, 0, image_width,
+ image_height);
+ }
+
+ // Blend the frame data image onto the background.
+ imlib_context_set_blend(1);
+ imlib_blend_image_onto_image(
+ frame_data_image, 1, 0, 0, frame->data_pix_width,
+ frame->data_pix_height, frame->x, frame->y,
+ frame->data_pix_width, frame->data_pix_height);
+
+ // Free the frame data image.
+ imlib_context_set_image(frame_data_image);
+ imlib_free_image();
+
+ frame_data_image = composed_image;
+ }
+
+ frame->imlib_object = frame_data_image;
+
+ images_ram_size += gr_frame_current_ram_size(frame);
+ frame->status = STATUS_RAM_LOADING_SUCCESS;
+
+ GR_LOG("After loading image %u frame %d ram: %ld KiB (+ %u KiB)\n",
+ frame->image->image_id, frame->index,
+ images_ram_size / 1024, gr_frame_current_ram_size(frame) / 1024);
+}
+
+/// Premultiplies the alpha channel of the image data. The data is an array of
+/// pixels such that each pixel is a 32-bit integer in the format 0xAARRGGBB.
+static void gr_premultiply_alpha(DATA32 *data, size_t num_pixels) {
+ for (size_t i = 0; i < num_pixels; ++i) {
+ DATA32 pixel = data[i];
+ unsigned char a = pixel >> 24;
+ if (a == 0) {
+ data[i] = 0;
+ } else if (a != 255) {
+ unsigned char b = (pixel & 0xFF) * a / 255;
+ unsigned char g = ((pixel >> 8) & 0xFF) * a / 255;
+ unsigned char r = ((pixel >> 16) & 0xFF) * a / 255;
+ data[i] = (a << 24) | (r << 16) | (g << 8) | b;
+ }
+ }
+}
+
+/// Creates a pixmap for the frame of an image placement. The pixmap contain the
+/// image data correctly scaled and fit to the box defined by the number of
+/// rows/columns of the image placement and the provided cell dimensions in
+/// pixels. If the placement is already loaded, it will be reloaded only if the
+/// cell dimensions have changed.
+Pixmap gr_load_pixmap(ImagePlacement *placement, int frameidx, int cw, int ch) {
+ Image *img = placement->image;
+ ImageFrame *frame = gr_get_frame(img, frameidx);
+
+ // Update the atime uncoditionally.
+ gr_touch_placement(placement);
+ if (frame)
+ gr_touch_frame(frame);
+
+ // If cw or ch are different, unload all the pixmaps.
+ if (placement->scaled_cw != cw || placement->scaled_ch != ch) {
+ gr_unload_placement(placement);
+ placement->scaled_cw = cw;
+ placement->scaled_ch = ch;
+ }
+
+ // If it's already loaded, do nothing.
+ Pixmap pixmap = gr_get_frame_pixmap(placement, frameidx);
+ if (pixmap)
+ return pixmap;
+
+ GR_LOG("Loading placement: %u/%u frame %u\n", img->image_id,
+ placement->placement_id, frameidx);
+
+ // Load the imlib object for the frame.
+ if (!frame) {
+ fprintf(stderr,
+ "error: could not find frame %u for image %u\n",
+ frameidx, img->image_id);
+ return 0;
+ }
+ gr_load_imlib_object(frame);
+ if (!frame->imlib_object)
+ return 0;
+
+ // Infer the placement size if needed.
+ gr_infer_placement_size_maybe(placement);
+
+ // Create the scaled image. This is temporary, we will scale it
+ // appropriately, upload to the X server, and then delete immediately.
+ int scaled_w = (int)placement->cols * cw;
+ int scaled_h = (int)placement->rows * ch;
+ if (scaled_w * scaled_h * 4 > graphics_max_single_image_ram_size) {
+ fprintf(stderr,
+ "error: placement %u/%u would be too big to load: %d x "
+ "%d x 4 > %u\n",
+ img->image_id, placement->placement_id, scaled_w,
+ scaled_h, graphics_max_single_image_ram_size);
+ return 0;
+ }
+ Imlib_Image scaled_image = imlib_create_image(scaled_w, scaled_h);
+ if (!scaled_image) {
+ fprintf(stderr,
+ "error: imlib_create_image(%d, %d) returned "
+ "null\n",
+ scaled_w, scaled_h);
+ return 0;
+ }
+ imlib_context_set_image(scaled_image);
+ imlib_image_set_has_alpha(1);
+
+ // First fill the scaled image with the transparent color.
+ imlib_context_set_blend(0);
+ imlib_context_set_color(0, 0, 0, 0);
+ imlib_image_fill_rectangle(0, 0, scaled_w, scaled_h);
+ imlib_context_set_anti_alias(1);
+ imlib_context_set_blend(1);
+
+ // The source rectangle.
+ int src_x = placement->src_pix_x;
+ int src_y = placement->src_pix_y;
+ int src_w = placement->src_pix_width;
+ int src_h = placement->src_pix_height;
+ // Whether the box is too small to use the true size of the image.
+ char box_too_small = scaled_w < src_w || scaled_h < src_h;
+ char mode = placement->scale_mode;
+
+ // Then blend the original image onto the transparent background.
+ if (src_w <= 0 || src_h <= 0) {
+ fprintf(stderr, "warning: image of zero size\n");
+ } else if (mode == SCALE_MODE_FILL) {
+ imlib_blend_image_onto_image(frame->imlib_object, 1, src_x,
+ src_y, src_w, src_h, 0, 0,
+ scaled_w, scaled_h);
+ } else if (mode == SCALE_MODE_NONE ||
+ (mode == SCALE_MODE_NONE_OR_CONTAIN && !box_too_small)) {
+ imlib_blend_image_onto_image(frame->imlib_object, 1, src_x,
+ src_y, src_w, src_h, 0, 0, src_w,
+ src_h);
+ } else {
+ if (mode != SCALE_MODE_CONTAIN &&
+ mode != SCALE_MODE_NONE_OR_CONTAIN) {
+ fprintf(stderr,
+ "warning: unknown scale mode %u, using "
+ "'contain' instead\n",
+ mode);
+ }
+ int dest_x, dest_y;
+ int dest_w, dest_h;
+ if (scaled_w * src_h > src_w * scaled_h) {
+ // If the box is wider than the original image, fit to
+ // height.
+ dest_h = scaled_h;
+ dest_y = 0;
+ dest_w = src_w * scaled_h / src_h;
+ dest_x = (scaled_w - dest_w) / 2;
+ } else {
+ // Otherwise, fit to width.
+ dest_w = scaled_w;
+ dest_x = 0;
+ dest_h = src_h * scaled_w / src_w;
+ dest_y = (scaled_h - dest_h) / 2;
+ }
+ imlib_blend_image_onto_image(frame->imlib_object, 1, src_x,
+ src_y, src_w, src_h, dest_x,
+ dest_y, dest_w, dest_h);
+ }
+
+ // XRender needs the alpha channel premultiplied.
+ DATA32 *data = imlib_image_get_data();
+ gr_premultiply_alpha(data, scaled_w * scaled_h);
+
+ // Upload the image to the X server.
+ Display *disp = imlib_context_get_display();
+ Visual *vis = imlib_context_get_visual();
+ Colormap cmap = imlib_context_get_colormap();
+ Drawable drawable = imlib_context_get_drawable();
+ if (!drawable)
+ drawable = DefaultRootWindow(disp);
+ pixmap = XCreatePixmap(disp, drawable, scaled_w, scaled_h, 32);
+ XVisualInfo visinfo;
+ XMatchVisualInfo(disp, DefaultScreen(disp), 32, TrueColor, &visinfo);
+ XImage *ximage = XCreateImage(disp, visinfo.visual, 32, ZPixmap, 0,
+ (char *)data, scaled_w, scaled_h, 32, 0);
+ GC gc = XCreateGC(disp, pixmap, 0, NULL);
+ XPutImage(disp, pixmap, gc, ximage, 0, 0, 0, 0, scaled_w,
+ scaled_h);
+ XFreeGC(disp, gc);
+ // XDestroyImage will free the data as well, but it is managed by imlib,
+ // so set it to NULL.
+ ximage->data = NULL;
+ XDestroyImage(ximage);
+ imlib_image_put_back_data(data);
+ imlib_free_image();
+
+ // Assign the pixmap to the frame and increase the ram size.
+ gr_set_frame_pixmap(placement, frameidx, pixmap);
+ images_ram_size += gr_placement_single_frame_ram_size(placement);
+ this_redraw_cycle_loaded_pixmaps++;
+
+ GR_LOG("After loading placement %u/%u frame %d ram: %ld KiB (+ %u "
+ "KiB)\n",
+ frame->image->image_id, placement->placement_id, frame->index,
+ images_ram_size / 1024,
+ gr_placement_single_frame_ram_size(placement) / 1024);
+
+ // Free up ram if needed, but keep the pixmap we've loaded no matter
+ // what.
+ placement->protected_frame = frameidx;
+ gr_check_limits();
+ placement->protected_frame = 0;
+
+ return pixmap;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// Initialization and deinitialization.
+////////////////////////////////////////////////////////////////////////////////
+
+/// Creates a temporary directory.
+static int gr_create_cache_dir() {
+ strncpy(cache_dir, graphics_cache_dir_template, sizeof(cache_dir));
+ if (!mkdtemp(cache_dir)) {
+ fprintf(stderr,
+ "error: could not create temporary dir from template "
+ "%s\n",
+ sanitized_filename(cache_dir));
+ return 0;
+ }
+ fprintf(stderr, "Graphics cache directory: %s\n", cache_dir);
+ return 1;
+}
+
+/// Checks whether `tmp_dir` exists and recreates it if it doesn't.
+static void gr_make_sure_tmpdir_exists() {
+ struct stat st;
+ if (stat(cache_dir, &st) == 0 && S_ISDIR(st.st_mode))
+ return;
+ fprintf(stderr,
+ "error: %s is not a directory, will need to create a new "
+ "graphics cache directory\n",
+ sanitized_filename(cache_dir));
+ gr_create_cache_dir();
+}
+
+/// Initialize the graphics module.
+void gr_init(Display *disp, Visual *vis, Colormap cm) {
+ // Set the initialization time.
+ clock_gettime(CLOCK_MONOTONIC, &initialization_time);
+
+ // Create the temporary dir.
+ if (!gr_create_cache_dir())
+ abort();
+
+ // Initialize imlib.
+ imlib_context_set_display(disp);
+ imlib_context_set_visual(vis);
+ imlib_context_set_colormap(cm);
+ imlib_context_set_anti_alias(1);
+ imlib_context_set_blend(1);
+ // Imlib2 checks only the file name when caching, which is not enough
+ // for us since we reuse file names. Disable caching.
+ imlib_set_cache_size(0);
+
+ // Prepare for color inversion.
+ for (size_t i = 0; i < 256; ++i)
+ reverse_table[i] = 255 - i;
+
+ // Create data structures.
+ images = kh_init(id2image);
+ kv_init(next_redraw_times);
+
+ atexit(gr_deinit);
+}
+
+/// Deinitialize the graphics module.
+void gr_deinit() {
+ // Remove the cache dir.
+ remove(cache_dir);
+ kv_destroy(next_redraw_times);
+ if (images) {
+ // Delete all images.
+ gr_delete_all_images();
+ // Destroy the data structures.
+ kh_destroy(id2image, images);
+ images = NULL;
+ }
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// Dumping, debugging, and image preview.
+////////////////////////////////////////////////////////////////////////////////
+
+/// Returns a string containing a time difference in a human-readable format.
+/// Uses a static buffer, so be careful.
+static const char *gr_ago(Milliseconds diff) {
+ static char result[32];
+ double seconds = (double)diff / 1000.0;
+ if (seconds < 1)
+ snprintf(result, sizeof(result), "%.2f sec ago", seconds);
+ else if (seconds < 60)
+ snprintf(result, sizeof(result), "%d sec ago", (int)seconds);
+ else if (seconds < 3600)
+ snprintf(result, sizeof(result), "%d min %d sec ago",
+ (int)(seconds / 60), (int)(seconds) % 60);
+ else {
+ snprintf(result, sizeof(result), "%d hr %d min %d sec ago",
+ (int)(seconds / 3600), (int)(seconds) % 3600 / 60,
+ (int)(seconds) % 60);
+ }
+ return result;
+}
+
+/// Prints to `file` with an indentation of `ind` spaces.
+static void fprintf_ind(FILE *file, int ind, const char *format, ...) {
+ fprintf(file, "%*s", ind, "");
+ va_list args;
+ va_start(args, format);
+ vfprintf(file, format, args);
+ va_end(args);
+}
+
+/// Dumps the image info to `file` with an indentation of `ind` spaces.
+static void gr_dump_image_info(FILE *file, Image *img, int ind) {
+ if (!img) {
+ fprintf_ind(file, ind, "Image is NULL\n");
+ return;
+ }
+ Milliseconds now = gr_now_ms();
+ fprintf_ind(file, ind, "Image %u\n", img->image_id);
+ ind += 4;
+ fprintf_ind(file, ind, "number: %u\n", img->image_number);
+ fprintf_ind(file, ind, "global command index: %lu\n",
+ img->global_command_index);
+ fprintf_ind(file, ind, "accessed: %ld %s\n", img->atime,
+ gr_ago(now - img->atime));
+ fprintf_ind(file, ind, "pix size: %ux%u\n", img->pix_width,
+ img->pix_height);
+ fprintf_ind(file, ind, "cur frame start time: %ld %s\n",
+ img->current_frame_time,
+ gr_ago(now - img->current_frame_time));
+ if (img->next_redraw)
+ fprintf_ind(file, ind, "next redraw: %ld in %ld ms\n",
+ img->next_redraw, img->next_redraw - now);
+ fprintf_ind(file, ind, "total disk size: %u KiB\n",
+ img->total_disk_size / 1024);
+ fprintf_ind(file, ind, "total duration: %d\n", img->total_duration);
+ fprintf_ind(file, ind, "frames: %d\n", gr_last_frame_index(img));
+ fprintf_ind(file, ind, "cur frame: %d\n", img->current_frame);
+ fprintf_ind(file, ind, "animation state: %d\n", img->animation_state);
+ fprintf_ind(file, ind, "default_placement: %u\n",
+ img->default_placement);
+}
+
+/// Dumps the frame info to `file` with an indentation of `ind` spaces.
+static void gr_dump_frame_info(FILE *file, ImageFrame *frame, int ind) {
+ if (!frame) {
+ fprintf_ind(file, ind, "Frame is NULL\n");
+ return;
+ }
+ Milliseconds now = gr_now_ms();
+ fprintf_ind(file, ind, "Frame %d\n", frame->index);
+ ind += 4;
+ if (frame->index == 0) {
+ fprintf_ind(file, ind, "NOT INITIALIZED\n");
+ return;
+ }
+ if (frame->uploading_failure)
+ fprintf_ind(file, ind, "uploading failure: %s\n",
+ image_uploading_failure_strings
+ [frame->uploading_failure]);
+ fprintf_ind(file, ind, "gap: %d\n", frame->gap);
+ fprintf_ind(file, ind, "accessed: %ld %s\n", frame->atime,
+ gr_ago(now - frame->atime));
+ fprintf_ind(file, ind, "data pix size: %ux%u\n", frame->data_pix_width,
+ frame->data_pix_height);
+ char filename[MAX_FILENAME_SIZE];
+ gr_get_frame_filename(frame, filename, MAX_FILENAME_SIZE);
+ if (access(filename, F_OK) != -1)
+ fprintf_ind(file, ind, "file: %s\n",
+ sanitized_filename(filename));
+ else
+ fprintf_ind(file, ind, "not on disk\n");
+ fprintf_ind(file, ind, "disk size: %u KiB\n", frame->disk_size / 1024);
+ if (frame->imlib_object) {
+ unsigned ram_size = gr_frame_current_ram_size(frame);
+ fprintf_ind(file, ind,
+ "loaded into ram, size: %d "
+ "KiB\n",
+ ram_size / 1024);
+ } else {
+ fprintf_ind(file, ind, "not loaded into ram\n");
+ }
+}
+
+/// Dumps the placement info to `file` with an indentation of `ind` spaces.
+static void gr_dump_placement_info(FILE *file, ImagePlacement *placement,
+ int ind) {
+ if (!placement) {
+ fprintf_ind(file, ind, "Placement is NULL\n");
+ return;
+ }
+ Milliseconds now = gr_now_ms();
+ fprintf_ind(file, ind, "Placement %u\n", placement->placement_id);
+ ind += 4;
+ fprintf_ind(file, ind, "accessed: %ld %s\n", placement->atime,
+ gr_ago(now - placement->atime));
+ fprintf_ind(file, ind, "scale_mode: %u\n", placement->scale_mode);
+ fprintf_ind(file, ind, "size: %u cols x %u rows\n", placement->cols,
+ placement->rows);
+ fprintf_ind(file, ind, "cell size: %ux%u\n", placement->scaled_cw,
+ placement->scaled_ch);
+ fprintf_ind(file, ind, "ram per frame: %u KiB\n",
+ gr_placement_single_frame_ram_size(placement) / 1024);
+ unsigned ram_size = gr_placement_current_ram_size(placement);
+ fprintf_ind(file, ind, "ram size: %d KiB\n", ram_size / 1024);
+}
+
+/// Dumps placement pixmaps to `file` with an indentation of `ind` spaces.
+static void gr_dump_placement_pixmaps(FILE *file, ImagePlacement *placement,
+ int ind) {
+ if (!placement)
+ return;
+ int frameidx = 1;
+ foreach_pixmap(*placement, pixmap, {
+ fprintf_ind(file, ind, "Frame %d pixmap %lu\n", frameidx,
+ pixmap);
+ ++frameidx;
+ });
+}
+
+/// Dumps the internal state (images and placements) to stderr.
+void gr_dump_state() {
+ FILE *file = stderr;
+ int ind = 0;
+ fprintf_ind(file, ind, "======= Graphics module state dump =======\n");
+ fprintf_ind(file, ind,
+ "sizeof(Image) = %lu sizeof(ImageFrame) = %lu "
+ "sizeof(ImagePlacement) = %lu\n",
+ sizeof(Image), sizeof(ImageFrame), sizeof(ImagePlacement));
+ fprintf_ind(file, ind, "Image count: %u\n", kh_size(images));
+ fprintf_ind(file, ind, "Placement count: %u\n", total_placement_count);
+ fprintf_ind(file, ind, "Estimated RAM usage: %ld KiB\n",
+ images_ram_size / 1024);
+ fprintf_ind(file, ind, "Estimated Disk usage: %ld KiB\n",
+ images_disk_size / 1024);
+
+ Milliseconds now = gr_now_ms();
+
+ int64_t images_ram_size_computed = 0;
+ int64_t images_disk_size_computed = 0;
+
+ Image *img = NULL;
+ ImagePlacement *placement = NULL;
+ kh_foreach_value(images, img, {
+ fprintf_ind(file, ind, "----------------\n");
+ gr_dump_image_info(file, img, 0);
+ int64_t total_disk_size_computed = 0;
+ int total_duration_computed = 0;
+ foreach_frame(*img, frame, {
+ gr_dump_frame_info(file, frame, 4);
+ if (frame->image != img)
+ fprintf_ind(file, 8,
+ "ERROR: WRONG IMAGE POINTER\n");
+ total_duration_computed += frame->gap;
+ images_disk_size_computed += frame->disk_size;
+ total_disk_size_computed += frame->disk_size;
+ if (frame->imlib_object)
+ images_ram_size_computed +=
+ gr_frame_current_ram_size(frame);
+ });
+ if (img->total_disk_size != total_disk_size_computed) {
+ fprintf_ind(file, ind,
+ " ERROR: total_disk_size is %u, but "
+ "computed value is %ld\n",
+ img->total_disk_size, total_disk_size_computed);
+ }
+ if (img->total_duration != total_duration_computed) {
+ fprintf_ind(file, ind,
+ " ERROR: total_duration is %d, but computed "
+ "value is %d\n",
+ img->total_duration, total_duration_computed);
+ }
+ kh_foreach_value(img->placements, placement, {
+ gr_dump_placement_info(file, placement, 4);
+ if (placement->image != img)
+ fprintf_ind(file, 8,
+ "ERROR: WRONG IMAGE POINTER\n");
+ fprintf_ind(file, 8,
+ "Pixmaps:\n");
+ gr_dump_placement_pixmaps(file, placement, 12);
+ unsigned ram_size =
+ gr_placement_current_ram_size(placement);
+ images_ram_size_computed += ram_size;
+ });
+ });
+ if (images_ram_size != images_ram_size_computed) {
+ fprintf_ind(file, ind,
+ "ERROR: images_ram_size is %ld, but computed value "
+ "is %ld\n",
+ images_ram_size, images_ram_size_computed);
+ }
+ if (images_disk_size != images_disk_size_computed) {
+ fprintf_ind(file, ind,
+ "ERROR: images_disk_size is %ld, but computed value "
+ "is %ld\n",
+ images_disk_size, images_disk_size_computed);
+ }
+ fprintf_ind(file, ind, "===========================================\n");
+}
+
+/// Executes `command` with the name of the file corresponding to `image_id` as
+/// the argument. Executes xmessage with an error message on failure.
+// TODO: Currently we do this for the first frame only. Not sure what to do with
+// animations.
+void gr_preview_image(uint32_t image_id, const char *exec) {
+ char command[256];
+ size_t len;
+ Image *img = gr_find_image(image_id);
+ if (img) {
+ ImageFrame *frame = &img->first_frame;
+ char filename[MAX_FILENAME_SIZE];
+ gr_get_frame_filename(frame, filename, MAX_FILENAME_SIZE);
+ if (frame->disk_size == 0) {
+ len = snprintf(command, 255,
+ "xmessage 'Image with id=%u is not "
+ "fully copied to %s'",
+ image_id, sanitized_filename(filename));
+ } else {
+ len = snprintf(command, 255, "%s %s &", exec,
+ sanitized_filename(filename));
+ }
+ } else {
+ len = snprintf(command, 255,
+ "xmessage 'Cannot find image with id=%u'",
+ image_id);
+ }
+ if (len > 255) {
+ fprintf(stderr, "error: command too long: %s\n", command);
+ snprintf(command, 255, "xmessage 'error: command too long'");
+ }
+ if (system(command) != 0) {
+ fprintf(stderr, "error: could not execute command %s\n",
+ command);
+ }
+}
+
+/// Executes `<st> -e less <file>` where <file> is the name of a temporary file
+/// containing the information about an image and placement, and <st> is
+/// specified with `st_executable`.
+void gr_show_image_info(uint32_t image_id, uint32_t placement_id,
+ uint32_t imgcol, uint32_t imgrow,
+ char is_classic_placeholder, int32_t diacritic_count,
+ char *st_executable) {
+ char filename[MAX_FILENAME_SIZE];
+ snprintf(filename, sizeof(filename), "%s/info-%u", cache_dir, image_id);
+ FILE *file = fopen(filename, "w");
+ if (!file) {
+ perror("fopen");
+ return;
+ }
+ // Basic information about the cell.
+ fprintf(file, "image_id = %u = 0x%08X\n", image_id, image_id);
+ fprintf(file, "placement_id = %u = 0x%08X\n", placement_id, placement_id);
+ fprintf(file, "column = %d, row = %d\n", imgcol, imgrow);
+ fprintf(file, "classic/unicode placeholder = %s\n",
+ is_classic_placeholder ? "classic" : "unicode");
+ fprintf(file, "original diacritic count = %d\n", diacritic_count);
+ // Information about the image and the placement.
+ Image *img = gr_find_image(image_id);
+ ImagePlacement *placement = gr_find_placement(img, placement_id);
+ gr_dump_image_info(file, img, 0);
+ gr_dump_placement_info(file, placement, 0);
+ if (img) {
+ fprintf(file, "Frames:\n");
+ foreach_frame(*img, frame, {
+ gr_dump_frame_info(file, frame, 4);
+ });
+ }
+ if (placement) {
+ fprintf(file, "Placement pixmaps:\n");
+ gr_dump_placement_pixmaps(file, placement, 4);
+ }
+ fclose(file);
+ char *argv[] = {st_executable, "-e", "less", filename, NULL};
+ if (posix_spawnp(NULL, st_executable, NULL, NULL, argv, environ) != 0) {
+ perror("posix_spawnp");
+ return;
+ }
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// Appending and displaying image rectangles.
+////////////////////////////////////////////////////////////////////////////////
+
+/// Displays debug information in the rectangle using colors col1 and col2.
+static void gr_displayinfo(Drawable buf, ImageRect *rect, int col1, int col2,
+ const char *message) {
+ int w_pix = (rect->img_end_col - rect->img_start_col) * rect->cw;
+ int h_pix = (rect->img_end_row - rect->img_start_row) * rect->ch;
+ Display *disp = imlib_context_get_display();
+ GC gc = XCreateGC(disp, buf, 0, NULL);
+ char info[MAX_INFO_LEN];
+ if (rect->placement_id)
+ snprintf(info, MAX_INFO_LEN, "%s%u/%u [%d:%d)x[%d:%d)", message,
+ rect->image_id, rect->placement_id,
+ rect->img_start_col, rect->img_end_col,
+ rect->img_start_row, rect->img_end_row);
+ else
+ snprintf(info, MAX_INFO_LEN, "%s%u [%d:%d)x[%d:%d)", message,
+ rect->image_id, rect->img_start_col, rect->img_end_col,
+ rect->img_start_row, rect->img_end_row);
+ XSetForeground(disp, gc, col1);
+ XDrawString(disp, buf, gc, rect->screen_x_pix + 4,
+ rect->screen_y_pix + h_pix - 3, info, strlen(info));
+ XSetForeground(disp, gc, col2);
+ XDrawString(disp, buf, gc, rect->screen_x_pix + 2,
+ rect->screen_y_pix + h_pix - 5, info, strlen(info));
+ XFreeGC(disp, gc);
+}
+
+/// Draws a rectangle (bounding box) for debugging.
+static void gr_showrect(Drawable buf, ImageRect *rect) {
+ int w_pix = (rect->img_end_col - rect->img_start_col) * rect->cw;
+ int h_pix = (rect->img_end_row - rect->img_start_row) * rect->ch;
+ Display *disp = imlib_context_get_display();
+ GC gc = XCreateGC(disp, buf, 0, NULL);
+ XSetForeground(disp, gc, 0xFF00FF00);
+ XDrawRectangle(disp, buf, gc, rect->screen_x_pix, rect->screen_y_pix,
+ w_pix - 1, h_pix - 1);
+ XSetForeground(disp, gc, 0xFFFF0000);
+ XDrawRectangle(disp, buf, gc, rect->screen_x_pix + 1,
+ rect->screen_y_pix + 1, w_pix - 3, h_pix - 3);
+ XFreeGC(disp, gc);
+}
+
+/// Updates the next redraw time for the given row. Resizes the
+/// next_redraw_times array if needed.
+static void gr_update_next_redraw_time(int row, Milliseconds next_redraw) {
+ if (next_redraw == 0)
+ return;
+ if (row >= kv_size(next_redraw_times)) {
+ size_t old_size = kv_size(next_redraw_times);
+ kv_a(Milliseconds, next_redraw_times, row);
+ for (size_t i = old_size; i <= row; ++i)
+ kv_A(next_redraw_times, i) = 0;
+ }
+ Milliseconds old_value = kv_A(next_redraw_times, row);
+ if (old_value == 0 || old_value > next_redraw)
+ kv_A(next_redraw_times, row) = next_redraw;
+}
+
+/// Draws the given part of an image.
+static void gr_drawimagerect(Drawable buf, ImageRect *rect) {
+ ImagePlacement *placement =
+ gr_find_image_and_placement(rect->image_id, rect->placement_id);
+ // If the image does not exist or image display is switched off, draw
+ // the bounding box.
+ if (!placement || !graphics_display_images) {
+ gr_showrect(buf, rect);
+ if (graphics_debug_mode == GRAPHICS_DEBUG_LOG_AND_BOXES)
+ gr_displayinfo(buf, rect, 0xFF000000, 0xFFFFFFFF, "");
+ return;
+ }
+
+ Image *img = placement->image;
+
+ if (img->last_redraw < drawing_start_time) {
+ // This is the first time we draw this image in this redraw
+ // cycle. Update the frame index we are going to display. Note
+ // that currently all image placements are synchronized.
+ int old_frame = img->current_frame;
+ gr_update_frame_index(img, drawing_start_time);
+ img->last_redraw = drawing_start_time;
+ }
+
+ // Adjust next redraw times for the rows of this image rect.
+ if (img->next_redraw) {
+ for (int row = rect->screen_y_row;
+ row <= rect->screen_y_row + rect->img_end_row -
+ rect->img_start_row - 1; ++row) {
+ gr_update_next_redraw_time(
+ row, img->next_redraw);
+ }
+ }
+
+ // Load the frame.
+ Pixmap pixmap = gr_load_pixmap(placement, img->current_frame, rect->cw,
+ rect->ch);
+
+ // If the image couldn't be loaded, display the bounding box.
+ if (!pixmap) {
+ gr_showrect(buf, rect);
+ if (graphics_debug_mode == GRAPHICS_DEBUG_LOG_AND_BOXES)
+ gr_displayinfo(buf, rect, 0xFF000000, 0xFFFFFFFF, "");
+ return;
+ }
+
+ int src_x = rect->img_start_col * rect->cw;
+ int src_y = rect->img_start_row * rect->ch;
+ int width = (rect->img_end_col - rect->img_start_col) * rect->cw;
+ int height = (rect->img_end_row - rect->img_start_row) * rect->ch;
+ int dst_x = rect->screen_x_pix;
+ int dst_y = rect->screen_y_pix;
+
+ // Display the image.
+ Display *disp = imlib_context_get_display();
+ Visual *vis = imlib_context_get_visual();
+
+ // Create an xrender picture for the window.
+ XRenderPictFormat *win_format =
+ XRenderFindVisualFormat(disp, vis);
+ Picture window_pic =
+ XRenderCreatePicture(disp, buf, win_format, 0, NULL);
+
+ // If needed, invert the image pixmap. Note that this naive approach of
+ // inverting the pixmap is not entirely correct, because the pixmap is
+ // premultiplied. But the result is good enough to visually indicate
+ // selection.
+ if (rect->reverse) {
+ unsigned pixmap_w =
+ (unsigned)placement->cols * placement->scaled_cw;
+ unsigned pixmap_h =
+ (unsigned)placement->rows * placement->scaled_ch;
+ Pixmap invpixmap =
+ XCreatePixmap(disp, buf, pixmap_w, pixmap_h, 32);
+ XGCValues gcv = {.function = GXcopyInverted};
+ GC gc = XCreateGC(disp, invpixmap, GCFunction, &gcv);
+ XCopyArea(disp, pixmap, invpixmap, gc, 0, 0, pixmap_w,
+ pixmap_h, 0, 0);
+ XFreeGC(disp, gc);
+ pixmap = invpixmap;
+ }
+
+ // Create a picture for the image pixmap.
+ XRenderPictFormat *pic_format =
+ XRenderFindStandardFormat(disp, PictStandardARGB32);
+ Picture pixmap_pic =
+ XRenderCreatePicture(disp, pixmap, pic_format, 0, NULL);
+
+ // Composite the image onto the window. In the reverse mode we ignore
+ // the alpha channel of the image because the naive inversion above
+ // seems to invert the alpha channel as well.
+ int pictop = rect->reverse ? PictOpSrc : PictOpOver;
+ XRenderComposite(disp, pictop, pixmap_pic, 0, window_pic,
+ src_x, src_y, src_x, src_y, dst_x, dst_y, width,
+ height);
+
+ // Free resources
+ XRenderFreePicture(disp, pixmap_pic);
+ XRenderFreePicture(disp, window_pic);
+ if (rect->reverse)
+ XFreePixmap(disp, pixmap);
+
+ // In debug mode always draw bounding boxes and print info.
+ if (graphics_debug_mode == GRAPHICS_DEBUG_LOG_AND_BOXES) {
+ gr_showrect(buf, rect);
+ gr_displayinfo(buf, rect, 0xFF000000, 0xFFFFFFFF, "");
+ }
+}
+
+/// Removes the given image rectangle.
+static void gr_freerect(ImageRect *rect) { memset(rect, 0, sizeof(ImageRect)); }
+
+/// Returns the bottom coordinate of the rect.
+static int gr_getrectbottom(ImageRect *rect) {
+ return rect->screen_y_pix +
+ (rect->img_end_row - rect->img_start_row) * rect->ch;
+}
+
+/// Prepare for image drawing. `cw` and `ch` are dimensions of the cell.
+void gr_start_drawing(Drawable buf, int cw, int ch) {
+ current_cw = cw;
+ current_ch = ch;
+ this_redraw_cycle_loaded_files = 0;
+ this_redraw_cycle_loaded_pixmaps = 0;
+ drawing_start_time = gr_now_ms();
+ imlib_context_set_drawable(buf);
+}
+
+/// Finish image drawing. This functions will draw all the rectangles left to
+/// draw.
+void gr_finish_drawing(Drawable buf) {
+ // Draw and then delete all known image rectangles.
+ for (size_t i = 0; i < MAX_IMAGE_RECTS; ++i) {
+ ImageRect *rect = &image_rects[i];
+ if (!rect->image_id)
+ continue;
+ gr_drawimagerect(buf, rect);
+ gr_freerect(rect);
+ }
+
+ // Compute the delay until the next redraw as the minimum of the next
+ // redraw delays for all rows.
+ Milliseconds drawing_end_time = gr_now_ms();
+ graphics_next_redraw_delay = INT_MAX;
+ for (int row = 0; row < kv_size(next_redraw_times); ++row) {
+ Milliseconds row_next_redraw = kv_A(next_redraw_times, row);
+ if (row_next_redraw > 0) {
+ int delay = MAX(graphics_animation_min_delay,
+ row_next_redraw - drawing_end_time);
+ graphics_next_redraw_delay =
+ MIN(graphics_next_redraw_delay, delay);
+ }
+ }
+
+ // In debug mode display additional info.
+ if (graphics_debug_mode) {
+ int milliseconds = drawing_end_time - drawing_start_time;
+
+ Display *disp = imlib_context_get_display();
+ GC gc = XCreateGC(disp, buf, 0, NULL);
+ const char *debug_mode_str =
+ graphics_debug_mode == GRAPHICS_DEBUG_LOG_AND_BOXES
+ ? "(boxes shown) "
+ : "";
+ int redraw_delay = graphics_next_redraw_delay == INT_MAX
+ ? -1
+ : graphics_next_redraw_delay;
+ char info[MAX_INFO_LEN];
+ snprintf(info, MAX_INFO_LEN,
+ "%sRender time: %d ms ram %ld K disk %ld K count "
+ "%d cell %dx%d delay %d",
+ debug_mode_str, milliseconds, images_ram_size / 1024,
+ images_disk_size / 1024, kh_size(images), current_cw,
+ current_ch, redraw_delay);
+ XSetForeground(disp, gc, 0xFF000000);
+ XFillRectangle(disp, buf, gc, 0, 0, 600, 16);
+ XSetForeground(disp, gc, 0xFFFFFFFF);
+ XDrawString(disp, buf, gc, 0, 14, info, strlen(info));
+ XFreeGC(disp, gc);
+
+ if (milliseconds > 0) {
+ fprintf(stderr, "%s (loaded %d files, %d pixmaps)\n",
+ info, this_redraw_cycle_loaded_files,
+ this_redraw_cycle_loaded_pixmaps);
+ }
+ }
+
+ // Check the limits in case we have used too much ram for placements.
+ gr_check_limits();
+}
+
+// Add an image rectangle to the list of rectangles to draw.
+void gr_append_imagerect(Drawable buf, uint32_t image_id, uint32_t placement_id,
+ int img_start_col, int img_end_col, int img_start_row,
+ int img_end_row, int x_col, int y_row, int x_pix,
+ int y_pix, int cw, int ch, int reverse) {
+ current_cw = cw;
+ current_ch = ch;
+
+ ImageRect new_rect;
+ new_rect.image_id = image_id;
+ new_rect.placement_id = placement_id;
+ new_rect.img_start_col = img_start_col;
+ new_rect.img_end_col = img_end_col;
+ new_rect.img_start_row = img_start_row;
+ new_rect.img_end_row = img_end_row;
+ new_rect.screen_y_row = y_row;
+ new_rect.screen_x_pix = x_pix;
+ new_rect.screen_y_pix = y_pix;
+ new_rect.ch = ch;
+ new_rect.cw = cw;
+ new_rect.reverse = reverse;
+
+ // Display some red text in debug mode.
+ if (graphics_debug_mode == GRAPHICS_DEBUG_LOG_AND_BOXES)
+ gr_displayinfo(buf, &new_rect, 0xFF000000, 0xFFFF0000, "? ");
+
+ // If it's the empty image (image_id=0) or an empty rectangle, do
+ // nothing.
+ if (image_id == 0 || img_end_col - img_start_col <= 0 ||
+ img_end_row - img_start_row <= 0)
+ return;
+ // Try to find a rect to merge with.
+ ImageRect *free_rect = NULL;
+ for (size_t i = 0; i < MAX_IMAGE_RECTS; ++i) {
+ ImageRect *rect = &image_rects[i];
+ if (rect->image_id == 0) {
+ if (!free_rect)
+ free_rect = rect;
+ continue;
+ }
+ if (rect->image_id != image_id ||
+ rect->placement_id != placement_id || rect->cw != cw ||
+ rect->ch != ch || rect->reverse != reverse)
+ continue;
+ // We only support the case when the new stripe is added to the
+ // bottom of an existing rectangle and they are perfectly
+ // aligned.
+ if (rect->img_end_row == img_start_row &&
+ gr_getrectbottom(rect) == y_pix) {
+ if (rect->img_start_col == img_start_col &&
+ rect->img_end_col == img_end_col &&
+ rect->screen_x_pix == x_pix) {
+ rect->img_end_row = img_end_row;
+ return;
+ }
+ }
+ }
+ // If we haven't merged the new rect with any existing rect, and there
+ // is no free rect, we have to render one of the existing rects.
+ if (!free_rect) {
+ for (size_t i = 0; i < MAX_IMAGE_RECTS; ++i) {
+ ImageRect *rect = &image_rects[i];
+ if (!free_rect || gr_getrectbottom(free_rect) >
+ gr_getrectbottom(rect))
+ free_rect = rect;
+ }
+ gr_drawimagerect(buf, free_rect);
+ gr_freerect(free_rect);
+ }
+ // Start a new rectangle in `free_rect`.
+ *free_rect = new_rect;
+}
+
+/// Mark rows containing animations as dirty if it's time to redraw them. Must
+/// be called right after `gr_start_drawing`.
+void gr_mark_dirty_animations(int *dirty, int rows) {
+ if (rows < kv_size(next_redraw_times))
+ kv_size(next_redraw_times) = rows;
+ if (rows * 2 < kv_max(next_redraw_times))
+ kv_resize(Milliseconds, next_redraw_times, rows);
+ for (int i = 0; i < MIN(rows, kv_size(next_redraw_times)); ++i) {
+ if (dirty[i]) {
+ kv_A(next_redraw_times, i) = 0;
+ continue;
+ }
+ Milliseconds next_update = kv_A(next_redraw_times, i);
+ if (next_update > 0 && next_update <= drawing_start_time) {
+ dirty[i] = 1;
+ kv_A(next_redraw_times, i) = 0;
+ }
+ }
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// Command parsing and handling.
+////////////////////////////////////////////////////////////////////////////////
+
+/// A parsed kitty graphics protocol command.
+typedef struct {
+ /// The command itself, without the 'G'.
+ char *command;
+ /// The payload (after ';').
+ char *payload;
+ /// 'a=', may be 't', 'q', 'f', 'T', 'p', 'd', 'a'.
+ char action;
+ /// 'q=', 1 to suppress OK response, 2 to suppress errors too.
+ int quiet;
+ /// 'f=', use 24 or 32 for raw pixel data, 100 to autodetect with
+ /// imlib2. If 'f=0', will try to load with imlib2, then fallback to
+ /// 32-bit pixel data.
+ int format;
+ /// 'o=', may be 'z' for RFC 1950 ZLIB.
+ int compression;
+ /// 't=', may be 'f', 't' or 'd'.
+ char transmission_medium;
+ /// 'd='
+ char delete_specifier;
+ /// 's=', 'v=', if 'a=t' or 'a=T', used only when 'f=24' or 'f=32'.
+ /// When 'a=f', this is the size of the frame rectangle when composed on
+ /// top of another frame.
+ int frame_pix_width, frame_pix_height;
+ /// 'x=', 'y=' - top-left corner of the source rectangle.
+ int src_pix_x, src_pix_y;
+ /// 'w=', 'h=' - width and height of the source rectangle.
+ int src_pix_width, src_pix_height;
+ /// 'r=', 'c='
+ int rows, columns;
+ /// 'i='
+ uint32_t image_id;
+ /// 'I='
+ uint32_t image_number;
+ /// 'p='
+ uint32_t placement_id;
+ /// 'm=', may be 0 or 1.
+ int more;
+ /// True if either 'm=0' or 'm=1' is specified.
+ char is_data_transmission;
+ /// True if turns out that this command is a continuation of a data
+ /// transmission and not the first one for this image. Populated by
+ /// `gr_handle_transmit_command`.
+ char is_direct_transmission_continuation;
+ /// 'S=', used to check the size of uploaded data.
+ int size;
+ /// 'U=', whether it's a virtual placement for Unicode placeholders.
+ int virtual;
+ /// 'C=', if true, do not move the cursor when displaying this placement
+ /// (non-virtual placements only).
+ char do_not_move_cursor;
+ // ---------------------------------------------------------------------
+ // Animation-related fields. Their keys often overlap with keys of other
+ // commands, so these make sense only if the action is 'a=f' (frame
+ // transmission) or 'a=a' (animation control).
+ //
+ // 'x=' and 'y=', the relative position of the frame image when it's
+ // composed on top of another frame.
+ int frame_dst_pix_x, frame_dst_pix_y;
+ /// 'X=', 'X=1' to replace colors instead of alpha blending on top of
+ /// the background color or frame.
+ char replace_instead_of_blending;
+ /// 'Y=', the background color in the 0xRRGGBBAA format (still
+ /// transmitted as a decimal number).
+ uint32_t background_color;
+ /// (Only for 'a=f'). 'c=', the 1-based index of the background frame.
+ int background_frame;
+ /// (Only for 'a=a'). 'c=', sets the index of the current frame.
+ int current_frame;
+ /// 'r=', the 1-based index of the frame to edit.
+ int edit_frame;
+ /// 'z=', the duration of the frame. Zero if not specified, negative if
+ /// the frame is gapless (i.e. skipped).
+ int gap;
+ /// (Only for 'a=a'). 's=', if non-zero, sets the state of the
+ /// animation, 1 to stop, 2 to run in loading mode, 3 to loop.
+ int animation_state;
+ /// (Only for 'a=a'). 'v=', if non-zero, sets the number of times the
+ /// animation will loop. 1 to loop infinitely, N to loop N-1 times.
+ int loops;
+} GraphicsCommand;
+
+/// Replaces all non-printed characters in `str` with '?' and truncates the
+/// string to `max_size`, maybe inserting ellipsis at the end.
+static void sanitize_str(char *str, size_t max_size) {
+ assert(max_size >= 4);
+ for (size_t i = 0; i < max_size; ++i) {
+ unsigned c = str[i];
+ if (c == '\0')
+ return;
+ if (c >= 128 || !isprint(c))
+ str[i] = '?';
+ }
+ str[max_size - 1] = '\0';
+ str[max_size - 2] = '.';
+ str[max_size - 3] = '.';
+ str[max_size - 4] = '.';
+}
+
+/// A non-destructive version of `sanitize_str`. Uses a static buffer, so be
+/// careful.
+static const char *sanitized_filename(const char *str) {
+ static char buf[MAX_FILENAME_SIZE];
+ strncpy(buf, str, sizeof(buf));
+ sanitize_str(buf, sizeof(buf));
+ return buf;
+}
+
+/// Creates a response to the current command in `graphics_command_result`.
+static void gr_createresponse(uint32_t image_id, uint32_t image_number,
+ uint32_t placement_id, const char *msg) {
+ if (!image_id && !image_number && !placement_id) {
+ // Nobody expects the response in this case, so just print it to
+ // stderr.
+ fprintf(stderr,
+ "error: No image id or image number or placement_id, "
+ "but still there is a response: %s\n",
+ msg);
+ return;
+ }
+ char *buf = graphics_command_result.response;
+ size_t maxlen = MAX_GRAPHICS_RESPONSE_LEN;
+ size_t written;
+ written = snprintf(buf, maxlen, "\033_G");
+ buf += written;
+ maxlen -= written;
+ if (image_id) {
+ written = snprintf(buf, maxlen, "i=%u,", image_id);
+ buf += written;
+ maxlen -= written;
+ }
+ if (image_number) {
+ written = snprintf(buf, maxlen, "I=%u,", image_number);
+ buf += written;
+ maxlen -= written;
+ }
+ if (placement_id) {
+ written = snprintf(buf, maxlen, "p=%u,", placement_id);
+ buf += written;
+ maxlen -= written;
+ }
+ buf[-1] = ';';
+ written = snprintf(buf, maxlen, "%s\033\\", msg);
+ buf += written;
+ maxlen -= written;
+ buf[-2] = '\033';
+ buf[-1] = '\\';
+}
+
+/// Creates the 'OK' response to the current command, unless suppressed or a
+/// non-final data transmission.
+static void gr_reportsuccess_cmd(GraphicsCommand *cmd) {
+ if (cmd->quiet < 1 && !cmd->more)
+ gr_createresponse(cmd->image_id, cmd->image_number,
+ cmd->placement_id, "OK");
+}
+
+/// Creates the 'OK' response to the current command (unless suppressed).
+static void gr_reportsuccess_frame(ImageFrame *frame) {
+ uint32_t id = frame->image->query_id ? frame->image->query_id
+ : frame->image->image_id;
+ if (frame->quiet < 1)
+ gr_createresponse(id, frame->image->image_number,
+ frame->image->initial_placement_id, "OK");
+}
+
+/// Creates an error response to the current command (unless suppressed).
+static void gr_reporterror_cmd(GraphicsCommand *cmd, const char *format, ...) {
+ char errmsg[MAX_GRAPHICS_RESPONSE_LEN];
+ graphics_command_result.error = 1;
+ va_list args;
+ va_start(args, format);
+ vsnprintf(errmsg, MAX_GRAPHICS_RESPONSE_LEN, format, args);
+ va_end(args);
+
+ fprintf(stderr, "%s in command: %s\n", errmsg, cmd->command);
+ if (cmd->quiet < 2)
+ gr_createresponse(cmd->image_id, cmd->image_number,
+ cmd->placement_id, errmsg);
+}
+
+/// Creates an error response to the current command (unless suppressed).
+static void gr_reporterror_frame(ImageFrame *frame, const char *format, ...) {
+ char errmsg[MAX_GRAPHICS_RESPONSE_LEN];
+ graphics_command_result.error = 1;
+ va_list args;
+ va_start(args, format);
+ vsnprintf(errmsg, MAX_GRAPHICS_RESPONSE_LEN, format, args);
+ va_end(args);
+
+ if (!frame) {
+ fprintf(stderr, "%s\n", errmsg);
+ gr_createresponse(0, 0, 0, errmsg);
+ } else {
+ uint32_t id = frame->image->query_id ? frame->image->query_id
+ : frame->image->image_id;
+ fprintf(stderr, "%s id=%u\n", errmsg, id);
+ if (frame->quiet < 2)
+ gr_createresponse(id, frame->image->image_number,
+ frame->image->initial_placement_id,
+ errmsg);
+ }
+}
+
+/// Loads an image and creates a success/failure response. Returns `frame`, or
+/// NULL if it's a query action and the image was deleted.
+static ImageFrame *gr_loadimage_and_report(ImageFrame *frame) {
+ gr_load_imlib_object(frame);
+ if (!frame->imlib_object) {
+ gr_reporterror_frame(frame, "EBADF: could not load image");
+ } else {
+ gr_reportsuccess_frame(frame);
+ }
+ // If it was a query action, discard the image.
+ if (frame->image->query_id) {
+ gr_delete_image(frame->image);
+ return NULL;
+ }
+ return frame;
+}
+
+/// Creates an appropriate uploading failure response to the current command.
+static void gr_reportuploaderror(ImageFrame *frame) {
+ switch (frame->uploading_failure) {
+ case 0:
+ return;
+ case ERROR_CANNOT_OPEN_CACHED_FILE:
+ gr_reporterror_frame(frame,
+ "EIO: could not create a file for image");
+ break;
+ case ERROR_OVER_SIZE_LIMIT:
+ gr_reporterror_frame(
+ frame,
+ "EFBIG: the size of the uploaded image exceeded "
+ "the image size limit %u",
+ graphics_max_single_image_file_size);
+ break;
+ case ERROR_UNEXPECTED_SIZE:
+ gr_reporterror_frame(frame,
+ "EINVAL: the size of the uploaded image %u "
+ "doesn't match the expected size %u",
+ frame->disk_size, frame->expected_size);
+ break;
+ };
+}
+
+/// Displays a non-virtual placement. This functions records the information in
+/// `graphics_command_result`, the placeholder itself is created by the terminal
+/// after handling the current command in the graphics module.
+static void gr_display_nonvirtual_placement(ImagePlacement *placement) {
+ if (placement->virtual)
+ return;
+ if (placement->image->first_frame.status < STATUS_RAM_LOADING_SUCCESS)
+ return;
+ // Infer the placement size if needed.
+ gr_infer_placement_size_maybe(placement);
+ // Populate the information about the placeholder which will be created
+ // by the terminal.
+ graphics_command_result.create_placeholder = 1;
+ graphics_command_result.placeholder.image_id = placement->image->image_id;
+ graphics_command_result.placeholder.placement_id = placement->placement_id;
+ graphics_command_result.placeholder.columns = placement->cols;
+ graphics_command_result.placeholder.rows = placement->rows;
+ graphics_command_result.placeholder.do_not_move_cursor =
+ placement->do_not_move_cursor;
+ GR_LOG("Creating a placeholder for %u/%u %d x %d\n",
+ placement->image->image_id, placement->placement_id,
+ placement->cols, placement->rows);
+}
+
+/// Marks the rows that are occupied by the image as dirty.
+static void gr_schedule_image_redraw(Image *img) {
+ if (!img)
+ return;
+ gr_schedule_image_redraw_by_id(img->image_id);
+}
+
+/// Appends data from `payload` to the frame `frame` when using direct
+/// transmission. Note that we report errors only for the final command
+/// (`!more`) to avoid spamming the client. If the frame is not specified, use
+/// the image id and frame index we are currently uploading.
+static void gr_append_data(ImageFrame *frame, const char *payload, int more) {
+ if (!frame) {
+ Image *img = gr_find_image(current_upload_image_id);
+ frame = gr_get_frame(img, current_upload_frame_index);
+ GR_LOG("Appending data to image %u frame %d\n",
+ current_upload_image_id, current_upload_frame_index);
+ if (!img)
+ GR_LOG("ERROR: this image doesn't exist\n");
+ if (!frame)
+ GR_LOG("ERROR: this frame doesn't exist\n");
+ }
+ if (!more) {
+ current_upload_image_id = 0;
+ current_upload_frame_index = 0;
+ }
+ if (!frame) {
+ if (!more)
+ gr_reporterror_frame(NULL, "ENOENT: could not find the "
+ "image to append data to");
+ return;
+ }
+ if (frame->status != STATUS_UPLOADING) {
+ if (!more)
+ gr_reportuploaderror(frame);
+ return;
+ }
+
+ // Decode the data.
+ size_t data_size = 0;
+ char *data = gr_base64dec(payload, &data_size);
+
+ GR_LOG("appending %u + %zu = %zu bytes\n", frame->disk_size, data_size,
+ frame->disk_size + data_size);
+
+ // Do not append this data if the image exceeds the size limit.
+ if (frame->disk_size + data_size >
+ graphics_max_single_image_file_size ||
+ frame->expected_size > graphics_max_single_image_file_size) {
+ free(data);
+ gr_delete_imagefile(frame);
+ frame->uploading_failure = ERROR_OVER_SIZE_LIMIT;
+ if (!more)
+ gr_reportuploaderror(frame);
+ return;
+ }
+
+ // If there is no open file corresponding to the image, create it.
+ if (!frame->open_file) {
+ gr_make_sure_tmpdir_exists();
+ char filename[MAX_FILENAME_SIZE];
+ gr_get_frame_filename(frame, filename, MAX_FILENAME_SIZE);
+ FILE *file = fopen(filename, frame->disk_size ? "a" : "w");
+ if (!file) {
+ frame->status = STATUS_UPLOADING_ERROR;
+ frame->uploading_failure = ERROR_CANNOT_OPEN_CACHED_FILE;
+ if (!more)
+ gr_reportuploaderror(frame);
+ return;
+ }
+ frame->open_file = file;
+ }
+
+ // Write data to the file and update disk size variables.
+ fwrite(data, 1, data_size, frame->open_file);
+ free(data);
+ frame->disk_size += data_size;
+ frame->image->total_disk_size += data_size;
+ images_disk_size += data_size;
+ gr_touch_frame(frame);
+
+ if (more) {
+ current_upload_image_id = frame->image->image_id;
+ current_upload_frame_index = frame->index;
+ } else {
+ current_upload_image_id = 0;
+ current_upload_frame_index = 0;
+ // Close the file.
+ if (frame->open_file) {
+ fclose(frame->open_file);
+ frame->open_file = NULL;
+ }
+ frame->status = STATUS_UPLOADING_SUCCESS;
+ uint32_t placement_id = frame->image->default_placement;
+ if (frame->expected_size &&
+ frame->expected_size != frame->disk_size) {
+ // Report failure if the uploaded image size doesn't
+ // match the expected size.
+ frame->status = STATUS_UPLOADING_ERROR;
+ frame->uploading_failure = ERROR_UNEXPECTED_SIZE;
+ gr_reportuploaderror(frame);
+ } else {
+ // Make sure to redraw all existing image instances.
+ gr_schedule_image_redraw(frame->image);
+ // Try to load the image into ram and report the result.
+ frame = gr_loadimage_and_report(frame);
+ // If there is a non-virtual image placement, we may
+ // need to display it.
+ if (frame && frame->index == 1) {
+ Image *img = frame->image;
+ ImagePlacement *placement = NULL;
+ kh_foreach_value(img->placements, placement, {
+ gr_display_nonvirtual_placement(placement);
+ });
+ }
+ }
+ }
+
+ // Check whether we need to delete old images.
+ gr_check_limits();
+}
+
+/// Finds the image either by id or by number specified in the command and sets
+/// the image_id of `cmd` if the image was found.
+static Image *gr_find_image_for_command(GraphicsCommand *cmd) {
+ if (cmd->image_id)
+ return gr_find_image(cmd->image_id);
+ Image *img = NULL;
+ // If the image number is not specified, we can't find the image, unless
+ // it's a put command, in which case we will try the last image.
+ if (cmd->image_number == 0 && cmd->action == 'p')
+ img = gr_find_image(last_image_id);
+ else
+ img = gr_find_image_by_number(cmd->image_number);
+ if (img)
+ cmd->image_id = img->image_id;
+ return img;
+}
+
+/// Creates a new image or a new frame in an existing image (depending on the
+/// command's action) and initializes its parameters from the command.
+static ImageFrame *gr_new_image_or_frame_from_command(GraphicsCommand *cmd) {
+ if (cmd->format != 0 && cmd->format != 32 && cmd->format != 24 &&
+ cmd->compression != 0) {
+ gr_reporterror_cmd(cmd, "EINVAL: compression is supported only "
+ "for raw pixel data (f=32 or f=24)");
+ // Even though we report an error, we still create an image.
+ }
+
+ Image *img = NULL;
+ if (cmd->action == 'f') {
+ // If it's a frame transmission action, there must be an
+ // existing image.
+ img = gr_find_image_for_command(cmd);
+ if (!img) {
+ gr_reporterror_cmd(cmd, "ENOENT: image not found");
+ return NULL;
+ }
+ } else {
+ // Otherwise create a new image object. If the action is `q`,
+ // we'll use random id instead of the one specified in the
+ // command.
+ uint32_t image_id = cmd->action == 'q' ? 0 : cmd->image_id;
+ img = gr_new_image(image_id);
+ if (!img)
+ return NULL;
+ if (cmd->action == 'q')
+ img->query_id = cmd->image_id;
+ else if (!cmd->image_id)
+ cmd->image_id = img->image_id;
+ // Set the image number.
+ img->image_number = cmd->image_number;
+ }
+
+ ImageFrame *frame = gr_append_new_frame(img);
+ // Initialize the frame.
+ frame->expected_size = cmd->size;
+ frame->format = cmd->format;
+ frame->compression = cmd->compression;
+ frame->background_color = cmd->background_color;
+ frame->background_frame_index = cmd->background_frame;
+ frame->gap = cmd->gap;
+ img->total_duration += frame->gap;
+ frame->blend = !cmd->replace_instead_of_blending;
+ frame->data_pix_width = cmd->frame_pix_width;
+ frame->data_pix_height = cmd->frame_pix_height;
+ if (cmd->action == 'f') {
+ frame->x = cmd->frame_dst_pix_x;
+ frame->y = cmd->frame_dst_pix_y;
+ }
+ // We save the quietness information in the frame because for direct
+ // transmission subsequent transmission command won't contain this info.
+ frame->quiet = cmd->quiet;
+ return frame;
+}
+
+/// Removes a file if it actually looks like a temporary file.
+static void gr_delete_tmp_file(const char *filename) {
+ if (strstr(filename, "tty-graphics-protocol") == NULL)
+ return;
+ if (strstr(filename, "/tmp/") != filename) {
+ const char *tmpdir = getenv("TMPDIR");
+ if (!tmpdir || !tmpdir[0] ||
+ strstr(filename, tmpdir) != filename)
+ return;
+ }
+ unlink(filename);
+}
+
+/// Handles a data transmission command.
+static ImageFrame *gr_handle_transmit_command(GraphicsCommand *cmd) {
+ // The default is direct transmission.
+ if (!cmd->transmission_medium)
+ cmd->transmission_medium = 'd';
+
+ // If neither id, nor image number is specified, and the transmission
+ // medium is 'd' (or unspecified), and there is an active direct upload,
+ // this is a continuation of the upload.
+ if (current_upload_image_id != 0 && cmd->image_id == 0 &&
+ cmd->image_number == 0 && cmd->transmission_medium == 'd') {
+ cmd->image_id = current_upload_image_id;
+ GR_LOG("No images id is specified, continuing uploading %u\n",
+ cmd->image_id);
+ }
+
+ ImageFrame *frame = NULL;
+ if (cmd->transmission_medium == 'f' ||
+ cmd->transmission_medium == 't') {
+ // File transmission.
+ // Create a new image or a new frame of an existing image.
+ frame = gr_new_image_or_frame_from_command(cmd);
+ if (!frame)
+ return NULL;
+ last_image_id = frame->image->image_id;
+ // Decode the filename.
+ char *original_filename = gr_base64dec(cmd->payload, NULL);
+ GR_LOG("Copying image %s\n",
+ sanitized_filename(original_filename));
+ // Stat the file and check that it's a regular file and not too
+ // big.
+ struct stat st;
+ int stat_res = stat(original_filename, &st);
+ const char *stat_error = NULL;
+ if (stat_res)
+ stat_error = strerror(errno);
+ else if (!S_ISREG(st.st_mode))
+ stat_error = "Not a regular file";
+ else if (st.st_size == 0)
+ stat_error = "The size of the file is zero";
+ else if (st.st_size > graphics_max_single_image_file_size)
+ stat_error = "The file is too large";
+ if (stat_error) {
+ gr_reporterror_cmd(cmd,
+ "EBADF: %s", stat_error);
+ fprintf(stderr, "Could not load the file %s\n",
+ sanitized_filename(original_filename));
+ frame->status = STATUS_UPLOADING_ERROR;
+ frame->uploading_failure = ERROR_CANNOT_COPY_FILE;
+ } else {
+ gr_make_sure_tmpdir_exists();
+ // Build the filename for the cached copy of the file.
+ char cache_filename[MAX_FILENAME_SIZE];
+ gr_get_frame_filename(frame, cache_filename,
+ MAX_FILENAME_SIZE);
+ // We will create a symlink to the original file, and
+ // then copy the file to the temporary cache dir. We do
+ // this symlink trick mostly to be able to use cp for
+ // copying, and avoid escaping file name characters when
+ // calling system at the same time.
+ char tmp_filename_symlink[MAX_FILENAME_SIZE + 4] = {0};
+ strcat(tmp_filename_symlink, cache_filename);
+ strcat(tmp_filename_symlink, ".sym");
+ char command[MAX_FILENAME_SIZE + 256];
+ size_t len =
+ snprintf(command, MAX_FILENAME_SIZE + 255,
+ "cp '%s' '%s'", tmp_filename_symlink,
+ cache_filename);
+ if (len > MAX_FILENAME_SIZE + 255 ||
+ symlink(original_filename, tmp_filename_symlink) ||
+ system(command) != 0) {
+ gr_reporterror_cmd(cmd,
+ "EBADF: could not copy the "
+ "image to the cache dir");
+ fprintf(stderr,
+ "Could not copy the image "
+ "%s (symlink %s) to %s",
+ sanitized_filename(original_filename),
+ tmp_filename_symlink, cache_filename);
+ frame->status = STATUS_UPLOADING_ERROR;
+ frame->uploading_failure = ERROR_CANNOT_COPY_FILE;
+ } else {
+ // Get the file size of the copied file.
+ frame->status = STATUS_UPLOADING_SUCCESS;
+ frame->disk_size = st.st_size;
+ frame->image->total_disk_size += st.st_size;
+ images_disk_size += frame->disk_size;
+ if (frame->expected_size &&
+ frame->expected_size != frame->disk_size) {
+ // The file has unexpected size.
+ frame->status = STATUS_UPLOADING_ERROR;
+ frame->uploading_failure =
+ ERROR_UNEXPECTED_SIZE;
+ gr_reportuploaderror(frame);
+ } else {
+ // Everything seems fine, try to load
+ // and redraw existing instances.
+ gr_schedule_image_redraw(frame->image);
+ frame = gr_loadimage_and_report(frame);
+ }
+ }
+ // Delete the symlink.
+ unlink(tmp_filename_symlink);
+ // Delete the original file if it's temporary.
+ if (cmd->transmission_medium == 't')
+ gr_delete_tmp_file(original_filename);
+ }
+ free(original_filename);
+ gr_check_limits();
+ } else if (cmd->transmission_medium == 'd') {
+ // Direct transmission (default if 't' is not specified).
+ frame = gr_get_last_frame(gr_find_image_for_command(cmd));
+ if (frame && frame->status == STATUS_UPLOADING) {
+ // This is a continuation of the previous transmission.
+ cmd->is_direct_transmission_continuation = 1;
+ gr_append_data(frame, cmd->payload, cmd->more);
+ return frame;
+ }
+ // If no action is specified, it's not the first transmission
+ // command. If we couldn't find the image, something went wrong
+ // and we should just drop this command.
+ if (cmd->action == 0)
+ return NULL;
+ // Otherwise create a new image or frame structure.
+ frame = gr_new_image_or_frame_from_command(cmd);
+ if (!frame)
+ return NULL;
+ last_image_id = frame->image->image_id;
+ frame->status = STATUS_UPLOADING;
+ // Start appending data.
+ gr_append_data(frame, cmd->payload, cmd->more);
+ } else {
+ gr_reporterror_cmd(
+ cmd,
+ "EINVAL: transmission medium '%c' is not supported",
+ cmd->transmission_medium);
+ return NULL;
+ }
+
+ return frame;
+}
+
+/// Handles the 'put' command by creating a placement.
+static void gr_handle_put_command(GraphicsCommand *cmd) {
+ if (cmd->image_id == 0 && cmd->image_number == 0) {
+ gr_reporterror_cmd(cmd,
+ "EINVAL: neither image id nor image number "
+ "are specified or both are zero");
+ return;
+ }
+
+ // Find the image with the id or number.
+ Image *img = gr_find_image_for_command(cmd);
+ if (!img) {
+ gr_reporterror_cmd(cmd, "ENOENT: image not found");
+ return;
+ }
+
+ // Create a placement. If a placement with the same id already exists,
+ // it will be deleted. If the id is zero, a random id will be generated.
+ ImagePlacement *placement = gr_new_placement(img, cmd->placement_id);
+ placement->virtual = cmd->virtual;
+ placement->src_pix_x = cmd->src_pix_x;
+ placement->src_pix_y = cmd->src_pix_y;
+ placement->src_pix_width = cmd->src_pix_width;
+ placement->src_pix_height = cmd->src_pix_height;
+ placement->cols = cmd->columns;
+ placement->rows = cmd->rows;
+ placement->do_not_move_cursor = cmd->do_not_move_cursor;
+
+ if (placement->virtual) {
+ placement->scale_mode = SCALE_MODE_CONTAIN;
+ } else if (placement->cols && placement->rows) {
+ // For classic placements the default is to stretch the image if
+ // both cols and rows are specified.
+ placement->scale_mode = SCALE_MODE_FILL;
+ } else if (placement->cols || placement->rows) {
+ // But if only one of them is specified, the default is to
+ // contain.
+ placement->scale_mode = SCALE_MODE_CONTAIN;
+ } else {
+ // If none of them are specified, the default is to use the
+ // original size.
+ placement->scale_mode = SCALE_MODE_NONE;
+ }
+
+ // Display the placement unless it's virtual.
+ gr_display_nonvirtual_placement(placement);
+
+ // Report success.
+ gr_reportsuccess_cmd(cmd);
+}
+
+/// Information about what to delete.
+typedef struct DeletionData {
+ uint32_t image_id;
+ uint32_t placement_id;
+ /// If true, delete the image object if there are no more placements.
+ char delete_image_if_no_ref;
+} DeletionData;
+
+/// The callback called for each cell to perform deletion.
+static int gr_deletion_callback(void *data, uint32_t image_id,
+ uint32_t placement_id, int col,
+ int row, char is_classic) {
+ DeletionData *del_data = data;
+ // Leave unicode placeholders alone.
+ if (!is_classic)
+ return 0;
+ if (del_data->image_id && del_data->image_id != image_id)
+ return 0;
+ if (del_data->placement_id && del_data->placement_id != placement_id)
+ return 0;
+ Image *img = gr_find_image(image_id);
+ // If the image is already deleted, just erase the placeholder.
+ if (!img)
+ return 1;
+ // Delete the placement.
+ if (placement_id)
+ gr_delete_placement(gr_find_placement(img, placement_id));
+ // Delete the image if image deletion is requested (uppercase delete
+ // specifier) and there are no more placements.
+ if (del_data->delete_image_if_no_ref && kh_size(img->placements) == 0)
+ gr_delete_image(img);
+ return 1;
+}
+
+/// Handles the delete command.
+static void gr_handle_delete_command(GraphicsCommand *cmd) {
+ DeletionData del_data = {0};
+ del_data.delete_image_if_no_ref = isupper(cmd->delete_specifier) != 0;
+ char d = tolower(cmd->delete_specifier);
+
+ if (d == 'n') {
+ d = 'i';
+ Image *img = gr_find_image_by_number(cmd->image_number);
+ if (!img)
+ return;
+ del_data.image_id = img->image_id;
+ }
+
+ if (!d || d == 'a') {
+ // Delete all visible placements.
+ gr_for_each_image_cell(gr_deletion_callback, &del_data);
+ } else if (d == 'i') {
+ // Delete the specified image by image id and maybe placement
+ // id.
+ if (!del_data.image_id)
+ del_data.image_id = cmd->image_id;
+ if (!del_data.image_id) {
+ fprintf(stderr,
+ "ERROR: image id is not specified in the "
+ "delete command\n");
+ return;
+ }
+ del_data.placement_id = cmd->placement_id;
+ // NOTE: It's not very clear whether we should delete the image
+ // even if there are no _visible_ placements to delete. We do
+ // this because otherwise there is no way to delete an image
+ // with virtual placements in one command.
+ if (!del_data.placement_id && del_data.delete_image_if_no_ref)
+ gr_delete_image(gr_find_image(cmd->image_id));
+ gr_for_each_image_cell(gr_deletion_callback, &del_data);
+ } else {
+ fprintf(stderr,
+ "WARNING: unsupported value of the d key: '%c'. The "
+ "command is ignored.\n",
+ cmd->delete_specifier);
+ }
+}
+
+static void gr_handle_animation_control_command(GraphicsCommand *cmd) {
+ if (cmd->image_id == 0 && cmd->image_number == 0) {
+ gr_reporterror_cmd(cmd,
+ "EINVAL: neither image id nor image number "
+ "are specified or both are zero");
+ return;
+ }
+
+ // Find the image with the id or number.
+ Image *img = gr_find_image_for_command(cmd);
+ if (!img) {
+ gr_reporterror_cmd(cmd, "ENOENT: image not found");
+ return;
+ }
+
+ // Find the frame to edit, if requested.
+ ImageFrame *frame = NULL;
+ if (cmd->edit_frame)
+ frame = gr_get_frame(img, cmd->edit_frame);
+ if (cmd->edit_frame || cmd->gap) {
+ if (!frame) {
+ gr_reporterror_cmd(cmd, "ENOENT: frame %d not found",
+ cmd->edit_frame);
+ return;
+ }
+ if (cmd->gap) {
+ img->total_duration -= frame->gap;
+ frame->gap = cmd->gap;
+ img->total_duration += frame->gap;
+ }
+ }
+
+ // Set animation-related parameters of the image.
+ if (cmd->current_frame)
+ img->current_frame = cmd->current_frame;
+ if (cmd->animation_state) {
+ if (cmd->animation_state == 1) {
+ img->animation_state = ANIMATION_STATE_STOPPED;
+ } else if (cmd->animation_state == 2) {
+ img->animation_state = ANIMATION_STATE_LOADING;
+ } else if (cmd->animation_state == 3) {
+ img->animation_state = ANIMATION_STATE_LOOPING;
+ } else {
+ gr_reporterror_cmd(
+ cmd, "EINVAL: invalid animation state: %d",
+ cmd->animation_state);
+ }
+ }
+ // TODO: Set the number of loops to cmd->loops
+
+ // Make sure we redraw all instances of the image.
+ gr_schedule_image_redraw(img);
+}
+
+/// Handles a command.
+static void gr_handle_command(GraphicsCommand *cmd) {
+ if (!cmd->image_id && !cmd->image_number) {
+ // If there is no image id or image number, nobody expects a
+ // response, so set quiet to 2.
+ cmd->quiet = 2;
+ }
+ ImageFrame *frame = NULL;
+ switch (cmd->action) {
+ case 0:
+ // If no action is specified, it may be a data transmission
+ // command if 'm=' is specified.
+ if (cmd->is_data_transmission) {
+ gr_handle_transmit_command(cmd);
+ break;
+ }
+ gr_reporterror_cmd(cmd, "EINVAL: no action specified");
+ break;
+ case 't':
+ case 'q':
+ case 'f':
+ // Transmit data. 'q' means query, which is basically the same
+ // as transmit, but the image is discarded, and the id is fake.
+ // 'f' appends a frame to an existing image.
+ gr_handle_transmit_command(cmd);
+ break;
+ case 'p':
+ // Display (put) the image.
+ gr_handle_put_command(cmd);
+ break;
+ case 'T':
+ // Transmit and display.
+ frame = gr_handle_transmit_command(cmd);
+ if (frame && !cmd->is_direct_transmission_continuation) {
+ gr_handle_put_command(cmd);
+ if (cmd->placement_id)
+ frame->image->initial_placement_id =
+ cmd->placement_id;
+ }
+ break;
+ case 'd':
+ gr_handle_delete_command(cmd);
+ break;
+ case 'a':
+ gr_handle_animation_control_command(cmd);
+ break;
+ default:
+ gr_reporterror_cmd(cmd, "EINVAL: unsupported action: %c",
+ cmd->action);
+ return;
+ }
+}
+
+/// A partially parsed key-value pair.
+typedef struct KeyAndValue {
+ char *key_start;
+ char *val_start;
+ unsigned key_len, val_len;
+} KeyAndValue;
+
+/// Parses the value of a key and assigns it to the appropriate field of `cmd`.
+static void gr_set_keyvalue(GraphicsCommand *cmd, KeyAndValue *kv) {
+ char *key_start = kv->key_start;
+ char *key_end = key_start + kv->key_len;
+ char *value_start = kv->val_start;
+ char *value_end = value_start + kv->val_len;
+ // Currently all keys are one-character.
+ if (key_end - key_start != 1) {
+ gr_reporterror_cmd(cmd, "EINVAL: unknown key of length %ld: %s",
+ key_end - key_start, key_start);
+ return;
+ }
+ long num = 0;
+ if (*key_start == 'a' || *key_start == 't' || *key_start == 'd' ||
+ *key_start == 'o') {
+ // Some keys have one-character values.
+ if (value_end - value_start != 1) {
+ gr_reporterror_cmd(
+ cmd,
+ "EINVAL: value of 'a', 't' or 'd' must be a "
+ "single char: %s",
+ key_start);
+ return;
+ }
+ } else {
+ // All the other keys have integer values.
+ char *num_end = NULL;
+ num = strtol(value_start, &num_end, 10);
+ if (num_end != value_end) {
+ gr_reporterror_cmd(
+ cmd, "EINVAL: could not parse number value: %s",
+ key_start);
+ return;
+ }
+ }
+ switch (*key_start) {
+ case 'a':
+ cmd->action = *value_start;
+ break;
+ case 't':
+ cmd->transmission_medium = *value_start;
+ break;
+ case 'd':
+ cmd->delete_specifier = *value_start;
+ break;
+ case 'q':
+ cmd->quiet = num;
+ break;
+ case 'f':
+ cmd->format = num;
+ if (num != 0 && num != 24 && num != 32 && num != 100) {
+ gr_reporterror_cmd(
+ cmd,
+ "EINVAL: unsupported format specification: %s",
+ key_start);
+ }
+ break;
+ case 'o':
+ cmd->compression = *value_start;
+ if (cmd->compression != 'z') {
+ gr_reporterror_cmd(cmd,
+ "EINVAL: unsupported compression "
+ "specification: %s",
+ key_start);
+ }
+ break;
+ case 's':
+ if (cmd->action == 'a')
+ cmd->animation_state = num;
+ else
+ cmd->frame_pix_width = num;
+ break;
+ case 'v':
+ if (cmd->action == 'a')
+ cmd->loops = num;
+ else
+ cmd->frame_pix_height = num;
+ break;
+ case 'i':
+ cmd->image_id = num;
+ break;
+ case 'I':
+ cmd->image_number = num;
+ break;
+ case 'p':
+ cmd->placement_id = num;
+ break;
+ case 'x':
+ cmd->src_pix_x = num;
+ cmd->frame_dst_pix_x = num;
+ break;
+ case 'y':
+ if (cmd->action == 'f')
+ cmd->frame_dst_pix_y = num;
+ else
+ cmd->src_pix_y = num;
+ break;
+ case 'w':
+ cmd->src_pix_width = num;
+ break;
+ case 'h':
+ cmd->src_pix_height = num;
+ break;
+ case 'c':
+ if (cmd->action == 'f')
+ cmd->background_frame = num;
+ else if (cmd->action == 'a')
+ cmd->current_frame = num;
+ else
+ cmd->columns = num;
+ break;
+ case 'r':
+ if (cmd->action == 'f' || cmd->action == 'a')
+ cmd->edit_frame = num;
+ else
+ cmd->rows = num;
+ break;
+ case 'm':
+ cmd->is_data_transmission = 1;
+ cmd->more = num;
+ break;
+ case 'S':
+ cmd->size = num;
+ break;
+ case 'U':
+ cmd->virtual = num;
+ break;
+ case 'X':
+ if (cmd->action == 'f')
+ cmd->replace_instead_of_blending = num;
+ else
+ break; /*ignore*/
+ break;
+ case 'Y':
+ if (cmd->action == 'f')
+ cmd->background_color = num;
+ else
+ break; /*ignore*/
+ break;
+ case 'z':
+ if (cmd->action == 'f' || cmd->action == 'a')
+ cmd->gap = num;
+ else
+ break; /*ignore*/
+ break;
+ case 'C':
+ cmd->do_not_move_cursor = num;
+ break;
+ default:
+ gr_reporterror_cmd(cmd, "EINVAL: unsupported key: %s",
+ key_start);
+ return;
+ }
+}
+
+/// Parse and execute a graphics command. `buf` must start with 'G' and contain
+/// at least `len + 1` characters. Returns 1 on success.
+int gr_parse_command(char *buf, size_t len) {
+ if (buf[0] != 'G')
+ return 0;
+
+ memset(&graphics_command_result, 0, sizeof(GraphicsCommandResult));
+
+ global_command_counter++;
+ GR_LOG("### Command %lu: %.80s\n", global_command_counter, buf);
+
+ // Eat the 'G'.
+ ++buf;
+ --len;
+
+ GraphicsCommand cmd = {.command = buf};
+ // The state of parsing. 'k' to parse key, 'v' to parse value, 'p' to
+ // parse the payload.
+ char state = 'k';
+ // An array of partially parsed key-value pairs.
+ KeyAndValue key_vals[32];
+ unsigned key_vals_count = 0;
+ char *key_start = buf;
+ char *key_end = NULL;
+ char *val_start = NULL;
+ char *val_end = NULL;
+ char *c = buf;
+ while (c - buf < len + 1) {
+ if (state == 'k') {
+ switch (*c) {
+ case ',':
+ case ';':
+ case '\0':
+ state = *c == ',' ? 'k' : 'p';
+ key_end = c;
+ gr_reporterror_cmd(
+ &cmd, "EINVAL: key without value: %s ",
+ key_start);
+ break;
+ case '=':
+ key_end = c;
+ state = 'v';
+ val_start = c + 1;
+ break;
+ default:
+ break;
+ }
+ } else if (state == 'v') {
+ switch (*c) {
+ case ',':
+ case ';':
+ case '\0':
+ state = *c == ',' ? 'k' : 'p';
+ val_end = c;
+ if (key_vals_count >=
+ sizeof(key_vals) / sizeof(*key_vals)) {
+ gr_reporterror_cmd(&cmd,
+ "EINVAL: too many "
+ "key-value pairs");
+ break;
+ }
+ key_vals[key_vals_count].key_start = key_start;
+ key_vals[key_vals_count].val_start = val_start;
+ key_vals[key_vals_count].key_len =
+ key_end - key_start;
+ key_vals[key_vals_count].val_len =
+ val_end - val_start;
+ ++key_vals_count;
+ key_start = c + 1;
+ break;
+ default:
+ break;
+ }
+ } else if (state == 'p') {
+ cmd.payload = c;
+ // break out of the loop, we don't check the payload
+ break;
+ }
+ ++c;
+ }
+
+ // Set the action key ('a=') first because we need it to disambiguate
+ // some keys. Also set 'i=' and 'I=' for better error reporting.
+ for (unsigned i = 0; i < key_vals_count; ++i) {
+ if (key_vals[i].key_len == 1) {
+ char *start = key_vals[i].key_start;
+ if (*start == 'a' || *start == 'i' || *start == 'I') {
+ gr_set_keyvalue(&cmd, &key_vals[i]);
+ break;
+ }
+ }
+ }
+ // Set the rest of the keys.
+ for (unsigned i = 0; i < key_vals_count; ++i)
+ gr_set_keyvalue(&cmd, &key_vals[i]);
+
+ if (!cmd.payload)
+ cmd.payload = buf + len;
+
+ if (cmd.payload && cmd.payload[0])
+ GR_LOG(" payload size: %ld\n", strlen(cmd.payload));
+
+ if (!graphics_command_result.error)
+ gr_handle_command(&cmd);
+
+ if (graphics_debug_mode) {
+ fprintf(stderr, "Response: ");
+ for (const char *resp = graphics_command_result.response;
+ *resp != '\0'; ++resp) {
+ if (isprint(*resp))
+ fprintf(stderr, "%c", *resp);
+ else
+ fprintf(stderr, "(0x%x)", *resp);
+ }
+ fprintf(stderr, "\n");
+ }
+
+ // Make sure that we suppress response if needed. Usually cmd.quiet is
+ // taken into account when creating the response, but it's not very
+ // reliable in the current implementation.
+ if (cmd.quiet) {
+ if (!graphics_command_result.error || cmd.quiet >= 2)
+ graphics_command_result.response[0] = '\0';
+ }
+
+ return 1;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// base64 decoding part is basically copied from st.c
+////////////////////////////////////////////////////////////////////////////////
+
+static const char gr_base64_digits[] = {
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 62, 0, 0, 0, 63, 52, 53, 54,
+ 55, 56, 57, 58, 59, 60, 61, 0, 0, 0, -1, 0, 0, 0, 0, 1, 2,
+ 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19,
+ 20, 21, 22, 23, 24, 25, 0, 0, 0, 0, 0, 0, 26, 27, 28, 29, 30,
+ 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
+ 48, 49, 50, 51, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
+
+static char gr_base64_getc(const char **src) {
+ while (**src && !isprint(**src))
+ (*src)++;
+ return **src ? *((*src)++) : '='; /* emulate padding if string ends */
+}
+
+char *gr_base64dec(const char *src, size_t *size) {
+ size_t in_len = strlen(src);
+ char *result, *dst;
+
+ result = dst = malloc((in_len + 3) / 4 * 3 + 1);
+ while (*src) {
+ int a = gr_base64_digits[(unsigned char)gr_base64_getc(&src)];
+ int b = gr_base64_digits[(unsigned char)gr_base64_getc(&src)];
+ int c = gr_base64_digits[(unsigned char)gr_base64_getc(&src)];
+ int d = gr_base64_digits[(unsigned char)gr_base64_getc(&src)];
+
+ if (a == -1 || b == -1)
+ break;
+
+ *dst++ = (a << 2) | ((b & 0x30) >> 4);
+ if (c == -1)
+ break;
+ *dst++ = ((b & 0x0f) << 4) | ((c & 0x3c) >> 2);
+ if (d == -1)
+ break;
+ *dst++ = ((c & 0x03) << 6) | d;
+ }
+ *dst = '\0';
+ if (size) {
+ *size = dst - result;
+ }
+ return result;
+}
diff --git a/st/graphics.h b/st/graphics.h
@@ -0,0 +1,107 @@
+
+#include <stdint.h>
+#include <sys/types.h>
+#include <X11/Xlib.h>
+
+/// Initialize the graphics module.
+void gr_init(Display *disp, Visual *vis, Colormap cm);
+/// Deinitialize the graphics module.
+void gr_deinit();
+
+/// Add an image rectangle to a list if rectangles to draw. This function may
+/// actually draw some rectangles, or it may wait till more rectangles are
+/// appended. Must be called between `gr_start_drawing` and `gr_finish_drawing`.
+/// - `img_start_col..img_end_col` and `img_start_row..img_end_row` define the
+/// part of the image to draw (row/col indices are zero-based, ends are
+/// excluded).
+/// - `x_col` and `y_row` are the coordinates of the top-left corner of the
+/// image in the terminal grid.
+/// - `x_pix` and `y_pix` are the same but in pixels.
+/// - `reverse` indicates whether colors should be inverted.
+void gr_append_imagerect(Drawable buf, uint32_t image_id, uint32_t placement_id,
+ int img_start_col, int img_end_col, int img_start_row,
+ int img_end_row, int x_col, int y_row, int x_pix,
+ int y_pix, int cw, int ch, int reverse);
+/// Prepare for image drawing. `cw` and `ch` are dimensions of the cell.
+void gr_start_drawing(Drawable buf, int cw, int ch);
+/// Finish image drawing. This functions will draw all the rectangles left to
+/// draw.
+void gr_finish_drawing(Drawable buf);
+/// Mark rows containing animations as dirty if it's time to redraw them. Must
+/// be called right after `gr_start_drawing`.
+void gr_mark_dirty_animations(int *dirty, int rows);
+
+/// Parse and execute a graphics command. `buf` must start with 'G' and contain
+/// at least `len + 1` characters (including '\0'). Returns 1 on success.
+/// Additional informations is returned through `graphics_command_result`.
+int gr_parse_command(char *buf, size_t len);
+
+/// Executes `command` with the name of the file corresponding to `image_id` as
+/// the argument. Executes xmessage with an error message on failure.
+void gr_preview_image(uint32_t image_id, const char *command);
+
+/// Executes `<st> -e less <file>` where <file> is the name of a temporary file
+/// containing the information about an image and placement, and <st> is
+/// specified with `st_executable`.
+void gr_show_image_info(uint32_t image_id, uint32_t placement_id,
+ uint32_t imgcol, uint32_t imgrow,
+ char is_classic_placeholder, int32_t diacritic_count,
+ char *st_executable);
+
+/// Dumps the internal state (images and placements) to stderr.
+void gr_dump_state();
+
+/// Unloads images to reduce RAM usage.
+void gr_unload_images_to_reduce_ram();
+
+/// Executes `callback` for each image cell. `callback` may return 1 to erase
+/// the cell or 0 to keep it. This function is implemented in `st.c`.
+void gr_for_each_image_cell(int (*callback)(void *data, uint32_t image_id,
+ uint32_t placement_id, int col,
+ int row, char is_classic),
+ void *data);
+
+/// Marks all the rows containing the image with `image_id` as dirty.
+void gr_schedule_image_redraw_by_id(uint32_t image_id);
+
+typedef enum {
+ GRAPHICS_DEBUG_NONE = 0,
+ GRAPHICS_DEBUG_LOG = 1,
+ GRAPHICS_DEBUG_LOG_AND_BOXES = 2,
+} GraphicsDebugMode;
+
+/// Print additional information, draw bounding bounding boxes, etc.
+extern GraphicsDebugMode graphics_debug_mode;
+
+/// Whether to display images or just draw bounding boxes.
+extern char graphics_display_images;
+
+/// The time in milliseconds until the next redraw to update animations.
+/// INT_MAX means no redraw is needed. Populated by `gr_finish_drawing`.
+extern int graphics_next_redraw_delay;
+
+#define MAX_GRAPHICS_RESPONSE_LEN 256
+
+/// A structure representing the result of a graphics command.
+typedef struct {
+ /// Indicates if the terminal needs to be redrawn.
+ char redraw;
+ /// The response of the command that should be sent back to the client
+ /// (may be empty if the quiet flag is set).
+ char response[MAX_GRAPHICS_RESPONSE_LEN];
+ /// Whether there was an error executing this command (not very useful,
+ /// the response must be sent back anyway).
+ char error;
+ /// Whether the terminal has to create a placeholder for a non-virtual
+ /// placement.
+ char create_placeholder;
+ /// The placeholder that needs to be created.
+ struct {
+ uint32_t rows, columns;
+ uint32_t image_id, placement_id;
+ char do_not_move_cursor;
+ } placeholder;
+} GraphicsCommandResult;
+
+/// The result of a graphics command.
+extern GraphicsCommandResult graphics_command_result;
diff --git a/st/icat-mini.sh b/st/icat-mini.sh
@@ -0,0 +1,801 @@
+#!/bin/sh
+
+# vim: shiftwidth=4
+
+script_name="$(basename "$0")"
+
+short_help="Usage: $script_name [OPTIONS] <image_file>
+
+This is a script to display images in the terminal using the kitty graphics
+protocol with Unicode placeholders. It is very basic, please use something else
+if you have alternatives.
+
+Options:
+ -h Show this help.
+ -s SCALE The scale of the image, may be floating point.
+ -c N, --cols N The number of columns.
+ -r N, --rows N The number of rows.
+ --max-cols N The maximum number of columns.
+ --max-rows N The maximum number of rows.
+ --cell-size WxH The cell size in pixels.
+ -m METHOD The uploading method, may be 'file', 'direct' or 'auto'.
+ --speed SPEED The multiplier for the animation speed (float).
+"
+
+# Exit the script on keyboard interrupt
+trap "echo 'icat-mini was interrupted' >&2; exit 1" INT
+
+cols=""
+rows=""
+file=""
+tty="/dev/tty"
+uploading_method="auto"
+cell_size=""
+scale=1
+max_cols=""
+max_rows=""
+speed=""
+
+# Parse the command line.
+while [ $# -gt 0 ]; do
+ case "$1" in
+ -c|--columns|--cols)
+ cols="$2"
+ shift 2
+ ;;
+ -r|--rows|-l|--lines)
+ rows="$2"
+ shift 2
+ ;;
+ -s|--scale)
+ scale="$2"
+ shift 2
+ ;;
+ -h|--help)
+ echo "$short_help"
+ exit 0
+ ;;
+ -m|--upload-method|--uploading-method)
+ uploading_method="$2"
+ shift 2
+ ;;
+ --cell-size)
+ cell_size="$2"
+ shift 2
+ ;;
+ --max-cols)
+ max_cols="$2"
+ shift 2
+ ;;
+ --max-rows)
+ max_rows="$2"
+ shift 2
+ ;;
+ --speed)
+ speed="$2"
+ shift 2
+ ;;
+ --)
+ file="$2"
+ shift 2
+ ;;
+ -*)
+ echo "Unknown option: $1" >&2
+ exit 1
+ ;;
+ *)
+ if [ -n "$file" ]; then
+ echo "Multiple image files are not supported: $file and $1" >&2
+ exit 1
+ fi
+ file="$1"
+ shift
+ ;;
+ esac
+done
+
+file="$(realpath "$file")"
+
+#####################################################################
+# Adjust the terminal state
+#####################################################################
+
+stty_orig="$(stty -g < "$tty")"
+stty -echo < "$tty"
+# Disable ctrl-z. Pressing ctrl-z during image uploading may cause some
+# horrible issues otherwise.
+stty susp undef < "$tty"
+stty -icanon < "$tty"
+
+restore_echo() {
+ [ -n "$stty_orig" ] || return
+ stty $stty_orig < "$tty"
+}
+
+trap restore_echo EXIT TERM
+
+#####################################################################
+# Detect imagemagick
+#####################################################################
+
+# If there is the 'magick' command, use it instead of separate 'convert' and
+# 'identify' commands.
+if command -v magick > /dev/null; then
+ identify="magick identify"
+ convert="magick"
+else
+ identify="identify"
+ convert="convert"
+fi
+
+#####################################################################
+# Detect tmux
+#####################################################################
+
+# Check if we are inside tmux.
+inside_tmux=""
+if [ -n "$TMUX" ]; then
+ case "$TERM" in
+ *tmux*|*screen*)
+ inside_tmux=1
+ ;;
+ esac
+fi
+
+#####################################################################
+# Compute the number of rows and columns
+#####################################################################
+
+is_pos_int() {
+ if [ -z "$1" ]; then
+ return 1 # false
+ fi
+ if [ -z "$(printf '%s' "$1" | tr -d '[:digit:]')" ]; then
+ if [ "$1" -gt 0 ]; then
+ return 0 # true
+ fi
+ fi
+ return 1 # false
+}
+
+if [ -n "$cols" ] || [ -n "$rows" ]; then
+ if [ -n "$max_cols" ] || [ -n "$max_rows" ]; then
+ echo "You can't specify both max-cols/rows and cols/rows" >&2
+ exit 1
+ fi
+fi
+
+# Get the max number of cols and rows.
+[ -n "$max_cols" ] || max_cols="$(tput cols)"
+[ -n "$max_rows" ] || max_rows="$(tput lines)"
+if [ "$max_rows" -gt 255 ]; then
+ max_rows=255
+fi
+
+python_ioctl_command="import array, fcntl, termios
+buf = array.array('H', [0, 0, 0, 0])
+fcntl.ioctl(0, termios.TIOCGWINSZ, buf)
+print(int(buf[2]/buf[1]), int(buf[3]/buf[0]))"
+
+# Get the cell size in pixels if either cols or rows are not specified.
+if [ -z "$cols" ] || [ -z "$rows" ]; then
+ cell_width=""
+ cell_height=""
+ # If the cell size is specified, use it.
+ if [ -n "$cell_size" ]; then
+ cell_width="${cell_size%x*}"
+ cell_height="${cell_size#*x}"
+ if ! is_pos_int "$cell_height" || ! is_pos_int "$cell_width"; then
+ echo "Invalid cell size: $cell_size" >&2
+ exit 1
+ fi
+ fi
+ # Otherwise try to use TIOCGWINSZ ioctl via python.
+ if [ -z "$cell_width" ] || [ -z "$cell_height" ]; then
+ cell_size_ioctl="$(python3 -c "$python_ioctl_command" < "$tty" 2> /dev/null)"
+ cell_width="${cell_size_ioctl% *}"
+ cell_height="${cell_size_ioctl#* }"
+ if ! is_pos_int "$cell_height" || ! is_pos_int "$cell_width"; then
+ cell_width=""
+ cell_height=""
+ fi
+ fi
+ # If it didn't work, try to use csi XTWINOPS.
+ if [ -z "$cell_width" ] || [ -z "$cell_height" ]; then
+ if [ -n "$inside_tmux" ]; then
+ printf '\ePtmux;\e\e[16t\e\\' >> "$tty"
+ else
+ printf '\e[16t' >> "$tty"
+ fi
+ # The expected response will look like ^[[6;<height>;<width>t
+ term_response=""
+ while true; do
+ char=$(dd bs=1 count=1 <"$tty" 2>/dev/null)
+ if [ "$char" = "t" ]; then
+ break
+ fi
+ term_response="$term_response$char"
+ done
+ cell_height="$(printf '%s' "$term_response" | cut -d ';' -f 2)"
+ cell_width="$(printf '%s' "$term_response" | cut -d ';' -f 3)"
+ if ! is_pos_int "$cell_height" || ! is_pos_int "$cell_width"; then
+ cell_width=8
+ cell_height=16
+ fi
+ fi
+fi
+
+# Compute a formula with bc and round to the nearest integer.
+bc_round() {
+ LC_NUMERIC=C printf '%.0f' "$(printf '%s\n' "scale=2;($1) + 0.5" | bc)"
+}
+
+# Compute the number of rows and columns of the image.
+if [ -z "$cols" ] || [ -z "$rows" ]; then
+ # Get the size of the image and its resolution. If it's an animation, use
+ # the first frame.
+ format_output="$($identify -format '%w %h\n' "$file" | head -1)"
+ img_width="$(printf '%s' "$format_output" | cut -d ' ' -f 1)"
+ img_height="$(printf '%s' "$format_output" | cut -d ' ' -f 2)"
+ if ! is_pos_int "$img_width" || ! is_pos_int "$img_height"; then
+ echo "Couldn't get image size from identify: $format_output" >&2
+ echo >&2
+ exit 1
+ fi
+ opt_cols_expr="(${scale}*${img_width}/${cell_width})"
+ opt_rows_expr="(${scale}*${img_height}/${cell_height})"
+ if [ -z "$cols" ] && [ -z "$rows" ]; then
+ # If columns and rows are not specified, compute the optimal values
+ # using the information about rows and columns per inch.
+ cols="$(bc_round "$opt_cols_expr")"
+ rows="$(bc_round "$opt_rows_expr")"
+ # Make sure that automatically computed rows and columns are within some
+ # sane limits
+ if [ "$cols" -gt "$max_cols" ]; then
+ rows="$(bc_round "$rows * $max_cols / $cols")"
+ cols="$max_cols"
+ fi
+ if [ "$rows" -gt "$max_rows" ]; then
+ cols="$(bc_round "$cols * $max_rows / $rows")"
+ rows="$max_rows"
+ fi
+ elif [ -z "$cols" ]; then
+ # If only one dimension is specified, compute the other one to match the
+ # aspect ratio as close as possible.
+ cols="$(bc_round "${opt_cols_expr}*${rows}/${opt_rows_expr}")"
+ elif [ -z "$rows" ]; then
+ rows="$(bc_round "${opt_rows_expr}*${cols}/${opt_cols_expr}")"
+ fi
+
+ if [ "$cols" -lt 1 ]; then
+ cols=1
+ fi
+ if [ "$rows" -lt 1 ]; then
+ rows=1
+ fi
+fi
+
+#####################################################################
+# Generate an image id
+#####################################################################
+
+image_id=""
+while [ -z "$image_id" ]; do
+ image_id="$(shuf -i 16777217-4294967295 -n 1)"
+ # Check that the id requires 24-bit fg colors.
+ if [ "$(expr \( "$image_id" / 256 \) % 65536)" -eq 0 ]; then
+ image_id=""
+ fi
+done
+
+#####################################################################
+# Uploading the image
+#####################################################################
+
+# Choose the uploading method
+if [ "$uploading_method" = "auto" ]; then
+ if [ -n "$SSH_CLIENT" ] || [ -n "$SSH_TTY" ] || [ -n "$SSH_CONNECTION" ]; then
+ uploading_method="direct"
+ else
+ uploading_method="file"
+ fi
+fi
+
+# Functions to emit the start and the end of a graphics command.
+if [ -n "$inside_tmux" ]; then
+ # If we are in tmux we have to wrap the command in Ptmux.
+ graphics_command_start='\ePtmux;\e\e_G'
+ graphics_command_end='\e\e\\\e\\'
+else
+ graphics_command_start='\e_G'
+ graphics_command_end='\e\\'
+fi
+
+start_gr_command() {
+ printf "$graphics_command_start" >> "$tty"
+}
+end_gr_command() {
+ printf "$graphics_command_end" >> "$tty"
+}
+
+# Send a graphics command with the correct start and end
+gr_command() {
+ start_gr_command
+ printf '%s' "$1" >> "$tty"
+ end_gr_command
+}
+
+# Send an uploading command. Usage: gr_upload <action> <command> <file>
+# Where <action> is a part of command that specifies the action, it will be
+# repeated for every chunk (if the method is direct), and <command> is the rest
+# of the command that specifies the image parameters. <action> and <command>
+# must not include the transmission method or ';'.
+# Example:
+# gr_upload "a=T,q=2" "U=1,i=${image_id},f=100,c=${cols},r=${rows}" "$file"
+gr_upload() {
+ arg_action="$1"
+ arg_command="$2"
+ arg_file="$3"
+ if [ "$uploading_method" = "file" ]; then
+ # base64-encode the filename
+ encoded_filename=$(printf '%s' "$arg_file" | base64 -w0)
+ gr_command "${arg_action},${arg_command},t=f;${encoded_filename}"
+ fi
+ if [ "$uploading_method" = "direct" ]; then
+ # Create a temporary directory to store the chunked image.
+ chunkdir="$(mktemp -d)"
+ if [ ! "$chunkdir" ] || [ ! -d "$chunkdir" ]; then
+ echo "Can't create a temp dir" >&2
+ exit 1
+ fi
+ # base64-encode the file and split it into chunks. The size of each
+ # graphics command shouldn't be more than 4096, so we set the size of an
+ # encoded chunk to be 3968, slightly less than that.
+ chunk_size=3968
+ cat "$arg_file" | base64 -w0 | split -b "$chunk_size" - "$chunkdir/chunk_"
+
+ # Issue a command indicating that we want to start data transmission for
+ # a new image.
+ gr_command "${arg_action},${arg_command},t=d,m=1"
+
+ # Transmit chunks.
+ for chunk in "$chunkdir/chunk_"*; do
+ start_gr_command
+ printf '%s' "${arg_action},i=${image_id},m=1;" >> "$tty"
+ cat "$chunk" >> "$tty"
+ end_gr_command
+ rm "$chunk"
+ done
+
+ # Tell the terminal that we are done.
+ gr_command "${arg_action},i=$image_id,m=0"
+
+ # Remove the temporary directory.
+ rmdir "$chunkdir"
+ fi
+}
+
+delayed_frame_dir_cleanup() {
+ arg_frame_dir="$1"
+ sleep 2
+ if [ -n "$arg_frame_dir" ]; then
+ for frame in "$arg_frame_dir"/frame_*.png; do
+ rm "$frame"
+ done
+ rmdir "$arg_frame_dir"
+ fi
+}
+
+upload_image_and_print_placeholder() {
+ # Check if the file is an animation.
+ frame_count=$($identify -format '%n\n' "$file" | head -n 1)
+ if [ "$frame_count" -gt 1 ]; then
+ # The file is an animation, decompose into frames and upload each frame.
+ frame_dir="$(mktemp -d)"
+ frame_dir="$HOME/temp/frames${frame_dir}"
+ mkdir -p "$frame_dir"
+ if [ ! "$frame_dir" ] || [ ! -d "$frame_dir" ]; then
+ echo "Can't create a temp dir for frames" >&2
+ exit 1
+ fi
+
+ # Decompose the animation into separate frames.
+ $convert "$file" -coalesce "$frame_dir/frame_%06d.png"
+
+ # Get all frame delays at once, in centiseconds, as a space-separated
+ # string.
+ delays=$($identify -format "%T " "$file")
+
+ frame_number=1
+ for frame in "$frame_dir"/frame_*.png; do
+ # Read the delay for the current frame and convert it from
+ # centiseconds to milliseconds.
+ delay=$(printf '%s' "$delays" | cut -d ' ' -f "$frame_number")
+ delay=$((delay * 10))
+ # If the delay is 0, set it to 100ms.
+ if [ "$delay" -eq 0 ]; then
+ delay=100
+ fi
+
+ if [ -n "$speed" ]; then
+ delay=$(bc_round "$delay / $speed")
+ fi
+
+ if [ "$frame_number" -eq 1 ]; then
+ # Upload the first frame with a=T
+ gr_upload "q=2,a=T" "f=100,U=1,i=${image_id},c=${cols},r=${rows}" "$frame"
+ # Set the delay for the first frame and also play the animation
+ # in loading mode (s=2).
+ gr_command "a=a,v=1,s=2,r=${frame_number},z=${delay},i=${image_id}"
+ # Print the placeholder after the first frame to reduce the wait
+ # time.
+ print_placeholder
+ else
+ # Upload subsequent frames with a=f
+ gr_upload "q=2,a=f" "f=100,i=${image_id},z=${delay}" "$frame"
+ fi
+
+ frame_number=$((frame_number + 1))
+ done
+
+ # Play the animation in loop mode (s=3).
+ gr_command "a=a,v=1,s=3,i=${image_id}"
+
+ # Remove the temporary directory, but do it in the background with a
+ # delay to avoid removing files before they are loaded by the terminal.
+ delayed_frame_dir_cleanup "$frame_dir" 2> /dev/null &
+ else
+ # The file is not an animation, upload it directly
+ gr_upload "q=2,a=T" "U=1,i=${image_id},f=100,c=${cols},r=${rows}" "$file"
+ # Print the placeholder
+ print_placeholder
+ fi
+}
+
+#####################################################################
+# Printing the image placeholder
+#####################################################################
+
+print_placeholder() {
+ # Each line starts with the escape sequence to set the foreground color to
+ # the image id.
+ blue="$(expr "$image_id" % 256 )"
+ green="$(expr \( "$image_id" / 256 \) % 256 )"
+ red="$(expr \( "$image_id" / 65536 \) % 256 )"
+ line_start="$(printf "\e[38;2;%d;%d;%dm" "$red" "$green" "$blue")"
+ line_end="$(printf "\e[39;m")"
+
+ id4th="$(expr \( "$image_id" / 16777216 \) % 256 )"
+ eval "id_diacritic=\$d${id4th}"
+
+ # Reset the brush state, mostly to reset the underline color.
+ printf "\e[0m"
+
+ # Fill the output with characters representing the image
+ for y in $(seq 0 "$(expr "$rows" - 1)"); do
+ eval "row_diacritic=\$d${y}"
+ printf '%s' "$line_start"
+ for x in $(seq 0 "$(expr "$cols" - 1)"); do
+ eval "col_diacritic=\$d${x}"
+ # Note that when $x is out of bounds, the column diacritic will
+ # be empty, meaning that the column should be guessed by the
+ # terminal.
+ if [ "$x" -ge "$num_diacritics" ]; then
+ printf '%s' "${placeholder}${row_diacritic}"
+ else
+ printf '%s' "${placeholder}${row_diacritic}${col_diacritic}${id_diacritic}"
+ fi
+ done
+ printf '%s\n' "$line_end"
+ done
+
+ printf "\e[0m"
+}
+
+d0="̅"
+d1="̍"
+d2="̎"
+d3="̐"
+d4="̒"
+d5="̽"
+d6="̾"
+d7="̿"
+d8="͆"
+d9="͊"
+d10="͋"
+d11="͌"
+d12="͐"
+d13="͑"
+d14="͒"
+d15="͗"
+d16="͛"
+d17="ͣ"
+d18="ͤ"
+d19="ͥ"
+d20="ͦ"
+d21="ͧ"
+d22="ͨ"
+d23="ͩ"
+d24="ͪ"
+d25="ͫ"
+d26="ͬ"
+d27="ͭ"
+d28="ͮ"
+d29="ͯ"
+d30="҃"
+d31="҄"
+d32="҅"
+d33="҆"
+d34="҇"
+d35="֒"
+d36="֓"
+d37="֔"
+d38="֕"
+d39="֗"
+d40="֘"
+d41="֙"
+d42="֜"
+d43="֝"
+d44="֞"
+d45="֟"
+d46="֠"
+d47="֡"
+d48="֨"
+d49="֩"
+d50="֫"
+d51="֬"
+d52="֯"
+d53="ׄ"
+d54="ؐ"
+d55="ؑ"
+d56="ؒ"
+d57="ؓ"
+d58="ؔ"
+d59="ؕ"
+d60="ؖ"
+d61="ؗ"
+d62="ٗ"
+d63="٘"
+d64="ٙ"
+d65="ٚ"
+d66="ٛ"
+d67="ٝ"
+d68="ٞ"
+d69="ۖ"
+d70="ۗ"
+d71="ۘ"
+d72="ۙ"
+d73="ۚ"
+d74="ۛ"
+d75="ۜ"
+d76="۟"
+d77="۠"
+d78="ۡ"
+d79="ۢ"
+d80="ۤ"
+d81="ۧ"
+d82="ۨ"
+d83="۫"
+d84="۬"
+d85="ܰ"
+d86="ܲ"
+d87="ܳ"
+d88="ܵ"
+d89="ܶ"
+d90="ܺ"
+d91="ܽ"
+d92="ܿ"
+d93="݀"
+d94="݁"
+d95="݃"
+d96="݅"
+d97="݇"
+d98="݉"
+d99="݊"
+d100="߫"
+d101="߬"
+d102="߭"
+d103="߮"
+d104="߯"
+d105="߰"
+d106="߱"
+d107="߳"
+d108="ࠖ"
+d109="ࠗ"
+d110="࠘"
+d111="࠙"
+d112="ࠛ"
+d113="ࠜ"
+d114="ࠝ"
+d115="ࠞ"
+d116="ࠟ"
+d117="ࠠ"
+d118="ࠡ"
+d119="ࠢ"
+d120="ࠣ"
+d121="ࠥ"
+d122="ࠦ"
+d123="ࠧ"
+d124="ࠩ"
+d125="ࠪ"
+d126="ࠫ"
+d127="ࠬ"
+d128="࠭"
+d129="॑"
+d130="॓"
+d131="॔"
+d132="ྂ"
+d133="ྃ"
+d134="྆"
+d135="྇"
+d136="፝"
+d137="፞"
+d138="፟"
+d139="៝"
+d140="᤺"
+d141="ᨗ"
+d142="᩵"
+d143="᩶"
+d144="᩷"
+d145="᩸"
+d146="᩹"
+d147="᩺"
+d148="᩻"
+d149="᩼"
+d150="᭫"
+d151="᭭"
+d152="᭮"
+d153="᭯"
+d154="᭰"
+d155="᭱"
+d156="᭲"
+d157="᭳"
+d158="᳐"
+d159="᳑"
+d160="᳒"
+d161="᳚"
+d162="᳛"
+d163="᳠"
+d164="᷀"
+d165="᷁"
+d166="᷃"
+d167="᷄"
+d168="᷅"
+d169="᷆"
+d170="᷇"
+d171="᷈"
+d172="᷉"
+d173="᷋"
+d174="᷌"
+d175="᷑"
+d176="᷒"
+d177="ᷓ"
+d178="ᷔ"
+d179="ᷕ"
+d180="ᷖ"
+d181="ᷗ"
+d182="ᷘ"
+d183="ᷙ"
+d184="ᷚ"
+d185="ᷛ"
+d186="ᷜ"
+d187="ᷝ"
+d188="ᷞ"
+d189="ᷟ"
+d190="ᷠ"
+d191="ᷡ"
+d192="ᷢ"
+d193="ᷣ"
+d194="ᷤ"
+d195="ᷥ"
+d196="ᷦ"
+d197="᷾"
+d198="⃐"
+d199="⃑"
+d200="⃔"
+d201="⃕"
+d202="⃖"
+d203="⃗"
+d204="⃛"
+d205="⃜"
+d206="⃡"
+d207="⃧"
+d208="⃩"
+d209="⃰"
+d210="⳯"
+d211="⳰"
+d212="⳱"
+d213="ⷠ"
+d214="ⷡ"
+d215="ⷢ"
+d216="ⷣ"
+d217="ⷤ"
+d218="ⷥ"
+d219="ⷦ"
+d220="ⷧ"
+d221="ⷨ"
+d222="ⷩ"
+d223="ⷪ"
+d224="ⷫ"
+d225="ⷬ"
+d226="ⷭ"
+d227="ⷮ"
+d228="ⷯ"
+d229="ⷰ"
+d230="ⷱ"
+d231="ⷲ"
+d232="ⷳ"
+d233="ⷴ"
+d234="ⷵ"
+d235="ⷶ"
+d236="ⷷ"
+d237="ⷸ"
+d238="ⷹ"
+d239="ⷺ"
+d240="ⷻ"
+d241="ⷼ"
+d242="ⷽ"
+d243="ⷾ"
+d244="ⷿ"
+d245="꙯"
+d246="꙼"
+d247="꙽"
+d248="꛰"
+d249="꛱"
+d250="꣠"
+d251="꣡"
+d252="꣢"
+d253="꣣"
+d254="꣤"
+d255="꣥"
+d256="꣦"
+d257="꣧"
+d258="꣨"
+d259="꣩"
+d260="꣪"
+d261="꣫"
+d262="꣬"
+d263="꣭"
+d264="꣮"
+d265="꣯"
+d266="꣰"
+d267="꣱"
+d268="ꪰ"
+d269="ꪲ"
+d270="ꪳ"
+d271="ꪷ"
+d272="ꪸ"
+d273="ꪾ"
+d274="꪿"
+d275="꫁"
+d276="︠"
+d277="︡"
+d278="︢"
+d279="︣"
+d280="︤"
+d281="︥"
+d282="︦"
+d283="𐨏"
+d284="𐨸"
+d285="𝆅"
+d286="𝆆"
+d287="𝆇"
+d288="𝆈"
+d289="𝆉"
+d290="𝆪"
+d291="𝆫"
+d292="𝆬"
+d293="𝆭"
+d294="𝉂"
+d295="𝉃"
+d296="𝉄"
+
+num_diacritics="297"
+
+placeholder=""
+
+#####################################################################
+# Upload the image and print the placeholder
+#####################################################################
+
+upload_image_and_print_placeholder
diff --git a/st/khash.h b/st/khash.h
@@ -0,0 +1,627 @@
+/* The MIT License
+
+ Copyright (c) 2008, 2009, 2011 by Attractive Chaos <attractor@live.co.uk>
+
+ Permission is hereby granted, free of charge, to any person obtaining
+ a copy of this software and associated documentation files (the
+ "Software"), to deal in the Software without restriction, including
+ without limitation the rights to use, copy, modify, merge, publish,
+ distribute, sublicense, and/or sell copies of the Software, and to
+ permit persons to whom the Software is furnished to do so, subject to
+ the following conditions:
+
+ The above copyright notice and this permission notice shall be
+ included in all copies or substantial portions of the Software.
+
+ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ SOFTWARE.
+*/
+
+/*
+ An example:
+
+#include "khash.h"
+KHASH_MAP_INIT_INT(32, char)
+int main() {
+ int ret, is_missing;
+ khiter_t k;
+ khash_t(32) *h = kh_init(32);
+ k = kh_put(32, h, 5, &ret);
+ kh_value(h, k) = 10;
+ k = kh_get(32, h, 10);
+ is_missing = (k == kh_end(h));
+ k = kh_get(32, h, 5);
+ kh_del(32, h, k);
+ for (k = kh_begin(h); k != kh_end(h); ++k)
+ if (kh_exist(h, k)) kh_value(h, k) = 1;
+ kh_destroy(32, h);
+ return 0;
+}
+*/
+
+/*
+ 2013-05-02 (0.2.8):
+
+ * Use quadratic probing. When the capacity is power of 2, stepping function
+ i*(i+1)/2 guarantees to traverse each bucket. It is better than double
+ hashing on cache performance and is more robust than linear probing.
+
+ In theory, double hashing should be more robust than quadratic probing.
+ However, my implementation is probably not for large hash tables, because
+ the second hash function is closely tied to the first hash function,
+ which reduce the effectiveness of double hashing.
+
+ Reference: http://research.cs.vt.edu/AVresearch/hashing/quadratic.php
+
+ 2011-12-29 (0.2.7):
+
+ * Minor code clean up; no actual effect.
+
+ 2011-09-16 (0.2.6):
+
+ * The capacity is a power of 2. This seems to dramatically improve the
+ speed for simple keys. Thank Zilong Tan for the suggestion. Reference:
+
+ - http://code.google.com/p/ulib/
+ - http://nothings.org/computer/judy/
+
+ * Allow to optionally use linear probing which usually has better
+ performance for random input. Double hashing is still the default as it
+ is more robust to certain non-random input.
+
+ * Added Wang's integer hash function (not used by default). This hash
+ function is more robust to certain non-random input.
+
+ 2011-02-14 (0.2.5):
+
+ * Allow to declare global functions.
+
+ 2009-09-26 (0.2.4):
+
+ * Improve portability
+
+ 2008-09-19 (0.2.3):
+
+ * Corrected the example
+ * Improved interfaces
+
+ 2008-09-11 (0.2.2):
+
+ * Improved speed a little in kh_put()
+
+ 2008-09-10 (0.2.1):
+
+ * Added kh_clear()
+ * Fixed a compiling error
+
+ 2008-09-02 (0.2.0):
+
+ * Changed to token concatenation which increases flexibility.
+
+ 2008-08-31 (0.1.2):
+
+ * Fixed a bug in kh_get(), which has not been tested previously.
+
+ 2008-08-31 (0.1.1):
+
+ * Added destructor
+*/
+
+
+#ifndef __AC_KHASH_H
+#define __AC_KHASH_H
+
+/*!
+ @header
+
+ Generic hash table library.
+ */
+
+#define AC_VERSION_KHASH_H "0.2.8"
+
+#include <stdlib.h>
+#include <string.h>
+#include <limits.h>
+
+/* compiler specific configuration */
+
+#if UINT_MAX == 0xffffffffu
+typedef unsigned int khint32_t;
+#elif ULONG_MAX == 0xffffffffu
+typedef unsigned long khint32_t;
+#endif
+
+#if ULONG_MAX == ULLONG_MAX
+typedef unsigned long khint64_t;
+#else
+typedef unsigned long long khint64_t;
+#endif
+
+#ifndef kh_inline
+#ifdef _MSC_VER
+#define kh_inline __inline
+#else
+#define kh_inline inline
+#endif
+#endif /* kh_inline */
+
+#ifndef klib_unused
+#if (defined __clang__ && __clang_major__ >= 3) || (defined __GNUC__ && __GNUC__ >= 3)
+#define klib_unused __attribute__ ((__unused__))
+#else
+#define klib_unused
+#endif
+#endif /* klib_unused */
+
+typedef khint32_t khint_t;
+typedef khint_t khiter_t;
+
+#define __ac_isempty(flag, i) ((flag[i>>4]>>((i&0xfU)<<1))&2)
+#define __ac_isdel(flag, i) ((flag[i>>4]>>((i&0xfU)<<1))&1)
+#define __ac_iseither(flag, i) ((flag[i>>4]>>((i&0xfU)<<1))&3)
+#define __ac_set_isdel_false(flag, i) (flag[i>>4]&=~(1ul<<((i&0xfU)<<1)))
+#define __ac_set_isempty_false(flag, i) (flag[i>>4]&=~(2ul<<((i&0xfU)<<1)))
+#define __ac_set_isboth_false(flag, i) (flag[i>>4]&=~(3ul<<((i&0xfU)<<1)))
+#define __ac_set_isdel_true(flag, i) (flag[i>>4]|=1ul<<((i&0xfU)<<1))
+
+#define __ac_fsize(m) ((m) < 16? 1 : (m)>>4)
+
+#ifndef kroundup32
+#define kroundup32(x) (--(x), (x)|=(x)>>1, (x)|=(x)>>2, (x)|=(x)>>4, (x)|=(x)>>8, (x)|=(x)>>16, ++(x))
+#endif
+
+#ifndef kcalloc
+#define kcalloc(N,Z) calloc(N,Z)
+#endif
+#ifndef kmalloc
+#define kmalloc(Z) malloc(Z)
+#endif
+#ifndef krealloc
+#define krealloc(P,Z) realloc(P,Z)
+#endif
+#ifndef kfree
+#define kfree(P) free(P)
+#endif
+
+static const double __ac_HASH_UPPER = 0.77;
+
+#define __KHASH_TYPE(name, khkey_t, khval_t) \
+ typedef struct kh_##name##_s { \
+ khint_t n_buckets, size, n_occupied, upper_bound; \
+ khint32_t *flags; \
+ khkey_t *keys; \
+ khval_t *vals; \
+ } kh_##name##_t;
+
+#define __KHASH_PROTOTYPES(name, khkey_t, khval_t) \
+ extern kh_##name##_t *kh_init_##name(void); \
+ extern void kh_destroy_##name(kh_##name##_t *h); \
+ extern void kh_clear_##name(kh_##name##_t *h); \
+ extern khint_t kh_get_##name(const kh_##name##_t *h, khkey_t key); \
+ extern int kh_resize_##name(kh_##name##_t *h, khint_t new_n_buckets); \
+ extern khint_t kh_put_##name(kh_##name##_t *h, khkey_t key, int *ret); \
+ extern void kh_del_##name(kh_##name##_t *h, khint_t x);
+
+#define __KHASH_IMPL(name, SCOPE, khkey_t, khval_t, kh_is_map, __hash_func, __hash_equal) \
+ SCOPE kh_##name##_t *kh_init_##name(void) { \
+ return (kh_##name##_t*)kcalloc(1, sizeof(kh_##name##_t)); \
+ } \
+ SCOPE void kh_destroy_##name(kh_##name##_t *h) \
+ { \
+ if (h) { \
+ kfree((void *)h->keys); kfree(h->flags); \
+ kfree((void *)h->vals); \
+ kfree(h); \
+ } \
+ } \
+ SCOPE void kh_clear_##name(kh_##name##_t *h) \
+ { \
+ if (h && h->flags) { \
+ memset(h->flags, 0xaa, __ac_fsize(h->n_buckets) * sizeof(khint32_t)); \
+ h->size = h->n_occupied = 0; \
+ } \
+ } \
+ SCOPE khint_t kh_get_##name(const kh_##name##_t *h, khkey_t key) \
+ { \
+ if (h->n_buckets) { \
+ khint_t k, i, last, mask, step = 0; \
+ mask = h->n_buckets - 1; \
+ k = __hash_func(key); i = k & mask; \
+ last = i; \
+ while (!__ac_isempty(h->flags, i) && (__ac_isdel(h->flags, i) || !__hash_equal(h->keys[i], key))) { \
+ i = (i + (++step)) & mask; \
+ if (i == last) return h->n_buckets; \
+ } \
+ return __ac_iseither(h->flags, i)? h->n_buckets : i; \
+ } else return 0; \
+ } \
+ SCOPE int kh_resize_##name(kh_##name##_t *h, khint_t new_n_buckets) \
+ { /* This function uses 0.25*n_buckets bytes of working space instead of [sizeof(key_t+val_t)+.25]*n_buckets. */ \
+ khint32_t *new_flags = 0; \
+ khint_t j = 1; \
+ { \
+ kroundup32(new_n_buckets); \
+ if (new_n_buckets < 4) new_n_buckets = 4; \
+ if (h->size >= (khint_t)(new_n_buckets * __ac_HASH_UPPER + 0.5)) j = 0; /* requested size is too small */ \
+ else { /* hash table size to be changed (shrink or expand); rehash */ \
+ new_flags = (khint32_t*)kmalloc(__ac_fsize(new_n_buckets) * sizeof(khint32_t)); \
+ if (!new_flags) return -1; \
+ memset(new_flags, 0xaa, __ac_fsize(new_n_buckets) * sizeof(khint32_t)); \
+ if (h->n_buckets < new_n_buckets) { /* expand */ \
+ khkey_t *new_keys = (khkey_t*)krealloc((void *)h->keys, new_n_buckets * sizeof(khkey_t)); \
+ if (!new_keys) { kfree(new_flags); return -1; } \
+ h->keys = new_keys; \
+ if (kh_is_map) { \
+ khval_t *new_vals = (khval_t*)krealloc((void *)h->vals, new_n_buckets * sizeof(khval_t)); \
+ if (!new_vals) { kfree(new_flags); return -1; } \
+ h->vals = new_vals; \
+ } \
+ } /* otherwise shrink */ \
+ } \
+ } \
+ if (j) { /* rehashing is needed */ \
+ for (j = 0; j != h->n_buckets; ++j) { \
+ if (__ac_iseither(h->flags, j) == 0) { \
+ khkey_t key = h->keys[j]; \
+ khval_t val; \
+ khint_t new_mask; \
+ new_mask = new_n_buckets - 1; \
+ if (kh_is_map) val = h->vals[j]; \
+ __ac_set_isdel_true(h->flags, j); \
+ while (1) { /* kick-out process; sort of like in Cuckoo hashing */ \
+ khint_t k, i, step = 0; \
+ k = __hash_func(key); \
+ i = k & new_mask; \
+ while (!__ac_isempty(new_flags, i)) i = (i + (++step)) & new_mask; \
+ __ac_set_isempty_false(new_flags, i); \
+ if (i < h->n_buckets && __ac_iseither(h->flags, i) == 0) { /* kick out the existing element */ \
+ { khkey_t tmp = h->keys[i]; h->keys[i] = key; key = tmp; } \
+ if (kh_is_map) { khval_t tmp = h->vals[i]; h->vals[i] = val; val = tmp; } \
+ __ac_set_isdel_true(h->flags, i); /* mark it as deleted in the old hash table */ \
+ } else { /* write the element and jump out of the loop */ \
+ h->keys[i] = key; \
+ if (kh_is_map) h->vals[i] = val; \
+ break; \
+ } \
+ } \
+ } \
+ } \
+ if (h->n_buckets > new_n_buckets) { /* shrink the hash table */ \
+ h->keys = (khkey_t*)krealloc((void *)h->keys, new_n_buckets * sizeof(khkey_t)); \
+ if (kh_is_map) h->vals = (khval_t*)krealloc((void *)h->vals, new_n_buckets * sizeof(khval_t)); \
+ } \
+ kfree(h->flags); /* free the working space */ \
+ h->flags = new_flags; \
+ h->n_buckets = new_n_buckets; \
+ h->n_occupied = h->size; \
+ h->upper_bound = (khint_t)(h->n_buckets * __ac_HASH_UPPER + 0.5); \
+ } \
+ return 0; \
+ } \
+ SCOPE khint_t kh_put_##name(kh_##name##_t *h, khkey_t key, int *ret) \
+ { \
+ khint_t x; \
+ if (h->n_occupied >= h->upper_bound) { /* update the hash table */ \
+ if (h->n_buckets > (h->size<<1)) { \
+ if (kh_resize_##name(h, h->n_buckets - 1) < 0) { /* clear "deleted" elements */ \
+ *ret = -1; return h->n_buckets; \
+ } \
+ } else if (kh_resize_##name(h, h->n_buckets + 1) < 0) { /* expand the hash table */ \
+ *ret = -1; return h->n_buckets; \
+ } \
+ } /* TODO: to implement automatically shrinking; resize() already support shrinking */ \
+ { \
+ khint_t k, i, site, last, mask = h->n_buckets - 1, step = 0; \
+ x = site = h->n_buckets; k = __hash_func(key); i = k & mask; \
+ if (__ac_isempty(h->flags, i)) x = i; /* for speed up */ \
+ else { \
+ last = i; \
+ while (!__ac_isempty(h->flags, i) && (__ac_isdel(h->flags, i) || !__hash_equal(h->keys[i], key))) { \
+ if (__ac_isdel(h->flags, i)) site = i; \
+ i = (i + (++step)) & mask; \
+ if (i == last) { x = site; break; } \
+ } \
+ if (x == h->n_buckets) { \
+ if (__ac_isempty(h->flags, i) && site != h->n_buckets) x = site; \
+ else x = i; \
+ } \
+ } \
+ } \
+ if (__ac_isempty(h->flags, x)) { /* not present at all */ \
+ h->keys[x] = key; \
+ __ac_set_isboth_false(h->flags, x); \
+ ++h->size; ++h->n_occupied; \
+ *ret = 1; \
+ } else if (__ac_isdel(h->flags, x)) { /* deleted */ \
+ h->keys[x] = key; \
+ __ac_set_isboth_false(h->flags, x); \
+ ++h->size; \
+ *ret = 2; \
+ } else *ret = 0; /* Don't touch h->keys[x] if present and not deleted */ \
+ return x; \
+ } \
+ SCOPE void kh_del_##name(kh_##name##_t *h, khint_t x) \
+ { \
+ if (x != h->n_buckets && !__ac_iseither(h->flags, x)) { \
+ __ac_set_isdel_true(h->flags, x); \
+ --h->size; \
+ } \
+ }
+
+#define KHASH_DECLARE(name, khkey_t, khval_t) \
+ __KHASH_TYPE(name, khkey_t, khval_t) \
+ __KHASH_PROTOTYPES(name, khkey_t, khval_t)
+
+#define KHASH_INIT2(name, SCOPE, khkey_t, khval_t, kh_is_map, __hash_func, __hash_equal) \
+ __KHASH_TYPE(name, khkey_t, khval_t) \
+ __KHASH_IMPL(name, SCOPE, khkey_t, khval_t, kh_is_map, __hash_func, __hash_equal)
+
+#define KHASH_INIT(name, khkey_t, khval_t, kh_is_map, __hash_func, __hash_equal) \
+ KHASH_INIT2(name, static kh_inline klib_unused, khkey_t, khval_t, kh_is_map, __hash_func, __hash_equal)
+
+/* --- BEGIN OF HASH FUNCTIONS --- */
+
+/*! @function
+ @abstract Integer hash function
+ @param key The integer [khint32_t]
+ @return The hash value [khint_t]
+ */
+#define kh_int_hash_func(key) (khint32_t)(key)
+/*! @function
+ @abstract Integer comparison function
+ */
+#define kh_int_hash_equal(a, b) ((a) == (b))
+/*! @function
+ @abstract 64-bit integer hash function
+ @param key The integer [khint64_t]
+ @return The hash value [khint_t]
+ */
+#define kh_int64_hash_func(key) (khint32_t)((key)>>33^(key)^(key)<<11)
+/*! @function
+ @abstract 64-bit integer comparison function
+ */
+#define kh_int64_hash_equal(a, b) ((a) == (b))
+/*! @function
+ @abstract const char* hash function
+ @param s Pointer to a null terminated string
+ @return The hash value
+ */
+static kh_inline khint_t __ac_X31_hash_string(const char *s)
+{
+ khint_t h = (khint_t)*s;
+ if (h) for (++s ; *s; ++s) h = (h << 5) - h + (khint_t)*s;
+ return h;
+}
+/*! @function
+ @abstract Another interface to const char* hash function
+ @param key Pointer to a null terminated string [const char*]
+ @return The hash value [khint_t]
+ */
+#define kh_str_hash_func(key) __ac_X31_hash_string(key)
+/*! @function
+ @abstract Const char* comparison function
+ */
+#define kh_str_hash_equal(a, b) (strcmp(a, b) == 0)
+
+static kh_inline khint_t __ac_Wang_hash(khint_t key)
+{
+ key += ~(key << 15);
+ key ^= (key >> 10);
+ key += (key << 3);
+ key ^= (key >> 6);
+ key += ~(key << 11);
+ key ^= (key >> 16);
+ return key;
+}
+#define kh_int_hash_func2(key) __ac_Wang_hash((khint_t)key)
+
+/* --- END OF HASH FUNCTIONS --- */
+
+/* Other convenient macros... */
+
+/*!
+ @abstract Type of the hash table.
+ @param name Name of the hash table [symbol]
+ */
+#define khash_t(name) kh_##name##_t
+
+/*! @function
+ @abstract Initiate a hash table.
+ @param name Name of the hash table [symbol]
+ @return Pointer to the hash table [khash_t(name)*]
+ */
+#define kh_init(name) kh_init_##name()
+
+/*! @function
+ @abstract Destroy a hash table.
+ @param name Name of the hash table [symbol]
+ @param h Pointer to the hash table [khash_t(name)*]
+ */
+#define kh_destroy(name, h) kh_destroy_##name(h)
+
+/*! @function
+ @abstract Reset a hash table without deallocating memory.
+ @param name Name of the hash table [symbol]
+ @param h Pointer to the hash table [khash_t(name)*]
+ */
+#define kh_clear(name, h) kh_clear_##name(h)
+
+/*! @function
+ @abstract Resize a hash table.
+ @param name Name of the hash table [symbol]
+ @param h Pointer to the hash table [khash_t(name)*]
+ @param s New size [khint_t]
+ */
+#define kh_resize(name, h, s) kh_resize_##name(h, s)
+
+/*! @function
+ @abstract Insert a key to the hash table.
+ @param name Name of the hash table [symbol]
+ @param h Pointer to the hash table [khash_t(name)*]
+ @param k Key [type of keys]
+ @param r Extra return code: -1 if the operation failed;
+ 0 if the key is present in the hash table;
+ 1 if the bucket is empty (never used); 2 if the element in
+ the bucket has been deleted [int*]
+ @return Iterator to the inserted element [khint_t]
+ */
+#define kh_put(name, h, k, r) kh_put_##name(h, k, r)
+
+/*! @function
+ @abstract Retrieve a key from the hash table.
+ @param name Name of the hash table [symbol]
+ @param h Pointer to the hash table [khash_t(name)*]
+ @param k Key [type of keys]
+ @return Iterator to the found element, or kh_end(h) if the element is absent [khint_t]
+ */
+#define kh_get(name, h, k) kh_get_##name(h, k)
+
+/*! @function
+ @abstract Remove a key from the hash table.
+ @param name Name of the hash table [symbol]
+ @param h Pointer to the hash table [khash_t(name)*]
+ @param k Iterator to the element to be deleted [khint_t]
+ */
+#define kh_del(name, h, k) kh_del_##name(h, k)
+
+/*! @function
+ @abstract Test whether a bucket contains data.
+ @param h Pointer to the hash table [khash_t(name)*]
+ @param x Iterator to the bucket [khint_t]
+ @return 1 if containing data; 0 otherwise [int]
+ */
+#define kh_exist(h, x) (!__ac_iseither((h)->flags, (x)))
+
+/*! @function
+ @abstract Get key given an iterator
+ @param h Pointer to the hash table [khash_t(name)*]
+ @param x Iterator to the bucket [khint_t]
+ @return Key [type of keys]
+ */
+#define kh_key(h, x) ((h)->keys[x])
+
+/*! @function
+ @abstract Get value given an iterator
+ @param h Pointer to the hash table [khash_t(name)*]
+ @param x Iterator to the bucket [khint_t]
+ @return Value [type of values]
+ @discussion For hash sets, calling this results in segfault.
+ */
+#define kh_val(h, x) ((h)->vals[x])
+
+/*! @function
+ @abstract Alias of kh_val()
+ */
+#define kh_value(h, x) ((h)->vals[x])
+
+/*! @function
+ @abstract Get the start iterator
+ @param h Pointer to the hash table [khash_t(name)*]
+ @return The start iterator [khint_t]
+ */
+#define kh_begin(h) (khint_t)(0)
+
+/*! @function
+ @abstract Get the end iterator
+ @param h Pointer to the hash table [khash_t(name)*]
+ @return The end iterator [khint_t]
+ */
+#define kh_end(h) ((h)->n_buckets)
+
+/*! @function
+ @abstract Get the number of elements in the hash table
+ @param h Pointer to the hash table [khash_t(name)*]
+ @return Number of elements in the hash table [khint_t]
+ */
+#define kh_size(h) ((h)->size)
+
+/*! @function
+ @abstract Get the number of buckets in the hash table
+ @param h Pointer to the hash table [khash_t(name)*]
+ @return Number of buckets in the hash table [khint_t]
+ */
+#define kh_n_buckets(h) ((h)->n_buckets)
+
+/*! @function
+ @abstract Iterate over the entries in the hash table
+ @param h Pointer to the hash table [khash_t(name)*]
+ @param kvar Variable to which key will be assigned
+ @param vvar Variable to which value will be assigned
+ @param code Block of code to execute
+ */
+#define kh_foreach(h, kvar, vvar, code) { khint_t __i; \
+ for (__i = kh_begin(h); __i != kh_end(h); ++__i) { \
+ if (!kh_exist(h,__i)) continue; \
+ (kvar) = kh_key(h,__i); \
+ (vvar) = kh_val(h,__i); \
+ code; \
+ } }
+
+/*! @function
+ @abstract Iterate over the values in the hash table
+ @param h Pointer to the hash table [khash_t(name)*]
+ @param vvar Variable to which value will be assigned
+ @param code Block of code to execute
+ */
+#define kh_foreach_value(h, vvar, code) { khint_t __i; \
+ for (__i = kh_begin(h); __i != kh_end(h); ++__i) { \
+ if (!kh_exist(h,__i)) continue; \
+ (vvar) = kh_val(h,__i); \
+ code; \
+ } }
+
+/* More convenient interfaces */
+
+/*! @function
+ @abstract Instantiate a hash set containing integer keys
+ @param name Name of the hash table [symbol]
+ */
+#define KHASH_SET_INIT_INT(name) \
+ KHASH_INIT(name, khint32_t, char, 0, kh_int_hash_func, kh_int_hash_equal)
+
+/*! @function
+ @abstract Instantiate a hash map containing integer keys
+ @param name Name of the hash table [symbol]
+ @param khval_t Type of values [type]
+ */
+#define KHASH_MAP_INIT_INT(name, khval_t) \
+ KHASH_INIT(name, khint32_t, khval_t, 1, kh_int_hash_func, kh_int_hash_equal)
+
+/*! @function
+ @abstract Instantiate a hash set containing 64-bit integer keys
+ @param name Name of the hash table [symbol]
+ */
+#define KHASH_SET_INIT_INT64(name) \
+ KHASH_INIT(name, khint64_t, char, 0, kh_int64_hash_func, kh_int64_hash_equal)
+
+/*! @function
+ @abstract Instantiate a hash map containing 64-bit integer keys
+ @param name Name of the hash table [symbol]
+ @param khval_t Type of values [type]
+ */
+#define KHASH_MAP_INIT_INT64(name, khval_t) \
+ KHASH_INIT(name, khint64_t, khval_t, 1, kh_int64_hash_func, kh_int64_hash_equal)
+
+typedef const char *kh_cstr_t;
+/*! @function
+ @abstract Instantiate a hash map containing const char* keys
+ @param name Name of the hash table [symbol]
+ */
+#define KHASH_SET_INIT_STR(name) \
+ KHASH_INIT(name, kh_cstr_t, char, 0, kh_str_hash_func, kh_str_hash_equal)
+
+/*! @function
+ @abstract Instantiate a hash map containing const char* keys
+ @param name Name of the hash table [symbol]
+ @param khval_t Type of values [type]
+ */
+#define KHASH_MAP_INIT_STR(name, khval_t) \
+ KHASH_INIT(name, kh_cstr_t, khval_t, 1, kh_str_hash_func, kh_str_hash_equal)
+
+#endif /* __AC_KHASH_H */
diff --git a/st/kvec.h b/st/kvec.h
@@ -0,0 +1,90 @@
+/* The MIT License
+
+ Copyright (c) 2008, by Attractive Chaos <attractor@live.co.uk>
+
+ Permission is hereby granted, free of charge, to any person obtaining
+ a copy of this software and associated documentation files (the
+ "Software"), to deal in the Software without restriction, including
+ without limitation the rights to use, copy, modify, merge, publish,
+ distribute, sublicense, and/or sell copies of the Software, and to
+ permit persons to whom the Software is furnished to do so, subject to
+ the following conditions:
+
+ The above copyright notice and this permission notice shall be
+ included in all copies or substantial portions of the Software.
+
+ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ SOFTWARE.
+*/
+
+/*
+ An example:
+
+#include "kvec.h"
+int main() {
+ kvec_t(int) array;
+ kv_init(array);
+ kv_push(int, array, 10); // append
+ kv_a(int, array, 20) = 5; // dynamic
+ kv_A(array, 20) = 4; // static
+ kv_destroy(array);
+ return 0;
+}
+*/
+
+/*
+ 2008-09-22 (0.1.0):
+
+ * The initial version.
+
+*/
+
+#ifndef AC_KVEC_H
+#define AC_KVEC_H
+
+#include <stdlib.h>
+
+#define kv_roundup32(x) (--(x), (x)|=(x)>>1, (x)|=(x)>>2, (x)|=(x)>>4, (x)|=(x)>>8, (x)|=(x)>>16, ++(x))
+
+#define kvec_t(type) struct { size_t n, m; type *a; }
+#define kv_init(v) ((v).n = (v).m = 0, (v).a = 0)
+#define kv_destroy(v) free((v).a)
+#define kv_A(v, i) ((v).a[(i)])
+#define kv_pop(v) ((v).a[--(v).n])
+#define kv_size(v) ((v).n)
+#define kv_max(v) ((v).m)
+
+#define kv_resize(type, v, s) ((v).m = (s), (v).a = (type*)realloc((v).a, sizeof(type) * (v).m))
+
+#define kv_copy(type, v1, v0) do { \
+ if ((v1).m < (v0).n) kv_resize(type, v1, (v0).n); \
+ (v1).n = (v0).n; \
+ memcpy((v1).a, (v0).a, sizeof(type) * (v0).n); \
+ } while (0) \
+
+#define kv_push(type, v, x) do { \
+ if ((v).n == (v).m) { \
+ (v).m = (v).m? (v).m<<1 : 2; \
+ (v).a = (type*)realloc((v).a, sizeof(type) * (v).m); \
+ } \
+ (v).a[(v).n++] = (x); \
+ } while (0)
+
+#define kv_pushp(type, v) ((((v).n == (v).m)? \
+ ((v).m = ((v).m? (v).m<<1 : 2), \
+ (v).a = (type*)realloc((v).a, sizeof(type) * (v).m), 0) \
+ : 0), ((v).a + ((v).n++)))
+
+#define kv_a(type, v, i) (((v).m <= (size_t)(i)? \
+ ((v).m = (v).n = (i) + 1, kv_roundup32((v).m), \
+ (v).a = (type*)realloc((v).a, sizeof(type) * (v).m), 0) \
+ : (v).n <= (size_t)(i)? (v).n = (i) + 1 \
+ : 0), (v).a[(i)])
+
+#endif
diff --git a/st/rowcolumn_diacritics_helpers.c b/st/rowcolumn_diacritics_helpers.c
@@ -0,0 +1,391 @@
+#include <stdint.h>
+
+uint16_t diacritic_to_num(uint32_t code)
+{
+ switch (code) {
+ case 0x305:
+ return code - 0x305 + 1;
+ case 0x30d:
+ case 0x30e:
+ return code - 0x30d + 2;
+ case 0x310:
+ return code - 0x310 + 4;
+ case 0x312:
+ return code - 0x312 + 5;
+ case 0x33d:
+ case 0x33e:
+ case 0x33f:
+ return code - 0x33d + 6;
+ case 0x346:
+ return code - 0x346 + 9;
+ case 0x34a:
+ case 0x34b:
+ case 0x34c:
+ return code - 0x34a + 10;
+ case 0x350:
+ case 0x351:
+ case 0x352:
+ return code - 0x350 + 13;
+ case 0x357:
+ return code - 0x357 + 16;
+ case 0x35b:
+ return code - 0x35b + 17;
+ case 0x363:
+ case 0x364:
+ case 0x365:
+ case 0x366:
+ case 0x367:
+ case 0x368:
+ case 0x369:
+ case 0x36a:
+ case 0x36b:
+ case 0x36c:
+ case 0x36d:
+ case 0x36e:
+ case 0x36f:
+ return code - 0x363 + 18;
+ case 0x483:
+ case 0x484:
+ case 0x485:
+ case 0x486:
+ case 0x487:
+ return code - 0x483 + 31;
+ case 0x592:
+ case 0x593:
+ case 0x594:
+ case 0x595:
+ return code - 0x592 + 36;
+ case 0x597:
+ case 0x598:
+ case 0x599:
+ return code - 0x597 + 40;
+ case 0x59c:
+ case 0x59d:
+ case 0x59e:
+ case 0x59f:
+ case 0x5a0:
+ case 0x5a1:
+ return code - 0x59c + 43;
+ case 0x5a8:
+ case 0x5a9:
+ return code - 0x5a8 + 49;
+ case 0x5ab:
+ case 0x5ac:
+ return code - 0x5ab + 51;
+ case 0x5af:
+ return code - 0x5af + 53;
+ case 0x5c4:
+ return code - 0x5c4 + 54;
+ case 0x610:
+ case 0x611:
+ case 0x612:
+ case 0x613:
+ case 0x614:
+ case 0x615:
+ case 0x616:
+ case 0x617:
+ return code - 0x610 + 55;
+ case 0x657:
+ case 0x658:
+ case 0x659:
+ case 0x65a:
+ case 0x65b:
+ return code - 0x657 + 63;
+ case 0x65d:
+ case 0x65e:
+ return code - 0x65d + 68;
+ case 0x6d6:
+ case 0x6d7:
+ case 0x6d8:
+ case 0x6d9:
+ case 0x6da:
+ case 0x6db:
+ case 0x6dc:
+ return code - 0x6d6 + 70;
+ case 0x6df:
+ case 0x6e0:
+ case 0x6e1:
+ case 0x6e2:
+ return code - 0x6df + 77;
+ case 0x6e4:
+ return code - 0x6e4 + 81;
+ case 0x6e7:
+ case 0x6e8:
+ return code - 0x6e7 + 82;
+ case 0x6eb:
+ case 0x6ec:
+ return code - 0x6eb + 84;
+ case 0x730:
+ return code - 0x730 + 86;
+ case 0x732:
+ case 0x733:
+ return code - 0x732 + 87;
+ case 0x735:
+ case 0x736:
+ return code - 0x735 + 89;
+ case 0x73a:
+ return code - 0x73a + 91;
+ case 0x73d:
+ return code - 0x73d + 92;
+ case 0x73f:
+ case 0x740:
+ case 0x741:
+ return code - 0x73f + 93;
+ case 0x743:
+ return code - 0x743 + 96;
+ case 0x745:
+ return code - 0x745 + 97;
+ case 0x747:
+ return code - 0x747 + 98;
+ case 0x749:
+ case 0x74a:
+ return code - 0x749 + 99;
+ case 0x7eb:
+ case 0x7ec:
+ case 0x7ed:
+ case 0x7ee:
+ case 0x7ef:
+ case 0x7f0:
+ case 0x7f1:
+ return code - 0x7eb + 101;
+ case 0x7f3:
+ return code - 0x7f3 + 108;
+ case 0x816:
+ case 0x817:
+ case 0x818:
+ case 0x819:
+ return code - 0x816 + 109;
+ case 0x81b:
+ case 0x81c:
+ case 0x81d:
+ case 0x81e:
+ case 0x81f:
+ case 0x820:
+ case 0x821:
+ case 0x822:
+ case 0x823:
+ return code - 0x81b + 113;
+ case 0x825:
+ case 0x826:
+ case 0x827:
+ return code - 0x825 + 122;
+ case 0x829:
+ case 0x82a:
+ case 0x82b:
+ case 0x82c:
+ case 0x82d:
+ return code - 0x829 + 125;
+ case 0x951:
+ return code - 0x951 + 130;
+ case 0x953:
+ case 0x954:
+ return code - 0x953 + 131;
+ case 0xf82:
+ case 0xf83:
+ return code - 0xf82 + 133;
+ case 0xf86:
+ case 0xf87:
+ return code - 0xf86 + 135;
+ case 0x135d:
+ case 0x135e:
+ case 0x135f:
+ return code - 0x135d + 137;
+ case 0x17dd:
+ return code - 0x17dd + 140;
+ case 0x193a:
+ return code - 0x193a + 141;
+ case 0x1a17:
+ return code - 0x1a17 + 142;
+ case 0x1a75:
+ case 0x1a76:
+ case 0x1a77:
+ case 0x1a78:
+ case 0x1a79:
+ case 0x1a7a:
+ case 0x1a7b:
+ case 0x1a7c:
+ return code - 0x1a75 + 143;
+ case 0x1b6b:
+ return code - 0x1b6b + 151;
+ case 0x1b6d:
+ case 0x1b6e:
+ case 0x1b6f:
+ case 0x1b70:
+ case 0x1b71:
+ case 0x1b72:
+ case 0x1b73:
+ return code - 0x1b6d + 152;
+ case 0x1cd0:
+ case 0x1cd1:
+ case 0x1cd2:
+ return code - 0x1cd0 + 159;
+ case 0x1cda:
+ case 0x1cdb:
+ return code - 0x1cda + 162;
+ case 0x1ce0:
+ return code - 0x1ce0 + 164;
+ case 0x1dc0:
+ case 0x1dc1:
+ return code - 0x1dc0 + 165;
+ case 0x1dc3:
+ case 0x1dc4:
+ case 0x1dc5:
+ case 0x1dc6:
+ case 0x1dc7:
+ case 0x1dc8:
+ case 0x1dc9:
+ return code - 0x1dc3 + 167;
+ case 0x1dcb:
+ case 0x1dcc:
+ return code - 0x1dcb + 174;
+ case 0x1dd1:
+ case 0x1dd2:
+ case 0x1dd3:
+ case 0x1dd4:
+ case 0x1dd5:
+ case 0x1dd6:
+ case 0x1dd7:
+ case 0x1dd8:
+ case 0x1dd9:
+ case 0x1dda:
+ case 0x1ddb:
+ case 0x1ddc:
+ case 0x1ddd:
+ case 0x1dde:
+ case 0x1ddf:
+ case 0x1de0:
+ case 0x1de1:
+ case 0x1de2:
+ case 0x1de3:
+ case 0x1de4:
+ case 0x1de5:
+ case 0x1de6:
+ return code - 0x1dd1 + 176;
+ case 0x1dfe:
+ return code - 0x1dfe + 198;
+ case 0x20d0:
+ case 0x20d1:
+ return code - 0x20d0 + 199;
+ case 0x20d4:
+ case 0x20d5:
+ case 0x20d6:
+ case 0x20d7:
+ return code - 0x20d4 + 201;
+ case 0x20db:
+ case 0x20dc:
+ return code - 0x20db + 205;
+ case 0x20e1:
+ return code - 0x20e1 + 207;
+ case 0x20e7:
+ return code - 0x20e7 + 208;
+ case 0x20e9:
+ return code - 0x20e9 + 209;
+ case 0x20f0:
+ return code - 0x20f0 + 210;
+ case 0x2cef:
+ case 0x2cf0:
+ case 0x2cf1:
+ return code - 0x2cef + 211;
+ case 0x2de0:
+ case 0x2de1:
+ case 0x2de2:
+ case 0x2de3:
+ case 0x2de4:
+ case 0x2de5:
+ case 0x2de6:
+ case 0x2de7:
+ case 0x2de8:
+ case 0x2de9:
+ case 0x2dea:
+ case 0x2deb:
+ case 0x2dec:
+ case 0x2ded:
+ case 0x2dee:
+ case 0x2def:
+ case 0x2df0:
+ case 0x2df1:
+ case 0x2df2:
+ case 0x2df3:
+ case 0x2df4:
+ case 0x2df5:
+ case 0x2df6:
+ case 0x2df7:
+ case 0x2df8:
+ case 0x2df9:
+ case 0x2dfa:
+ case 0x2dfb:
+ case 0x2dfc:
+ case 0x2dfd:
+ case 0x2dfe:
+ case 0x2dff:
+ return code - 0x2de0 + 214;
+ case 0xa66f:
+ return code - 0xa66f + 246;
+ case 0xa67c:
+ case 0xa67d:
+ return code - 0xa67c + 247;
+ case 0xa6f0:
+ case 0xa6f1:
+ return code - 0xa6f0 + 249;
+ case 0xa8e0:
+ case 0xa8e1:
+ case 0xa8e2:
+ case 0xa8e3:
+ case 0xa8e4:
+ case 0xa8e5:
+ case 0xa8e6:
+ case 0xa8e7:
+ case 0xa8e8:
+ case 0xa8e9:
+ case 0xa8ea:
+ case 0xa8eb:
+ case 0xa8ec:
+ case 0xa8ed:
+ case 0xa8ee:
+ case 0xa8ef:
+ case 0xa8f0:
+ case 0xa8f1:
+ return code - 0xa8e0 + 251;
+ case 0xaab0:
+ return code - 0xaab0 + 269;
+ case 0xaab2:
+ case 0xaab3:
+ return code - 0xaab2 + 270;
+ case 0xaab7:
+ case 0xaab8:
+ return code - 0xaab7 + 272;
+ case 0xaabe:
+ case 0xaabf:
+ return code - 0xaabe + 274;
+ case 0xaac1:
+ return code - 0xaac1 + 276;
+ case 0xfe20:
+ case 0xfe21:
+ case 0xfe22:
+ case 0xfe23:
+ case 0xfe24:
+ case 0xfe25:
+ case 0xfe26:
+ return code - 0xfe20 + 277;
+ case 0x10a0f:
+ return code - 0x10a0f + 284;
+ case 0x10a38:
+ return code - 0x10a38 + 285;
+ case 0x1d185:
+ case 0x1d186:
+ case 0x1d187:
+ case 0x1d188:
+ case 0x1d189:
+ return code - 0x1d185 + 286;
+ case 0x1d1aa:
+ case 0x1d1ab:
+ case 0x1d1ac:
+ case 0x1d1ad:
+ return code - 0x1d1aa + 291;
+ case 0x1d242:
+ case 0x1d243:
+ case 0x1d244:
+ return code - 0x1d242 + 295;
+ }
+ return 0;
+}
diff --git a/st/st b/st/st
Binary files differ.
diff --git a/st/st-anysize-20220718-baa9357.diff b/st/st-anysize-20220718-baa9357.diff
@@ -0,0 +1,164 @@
+From 8dcdc4b21a73268e167d98aa30f24315c7f3b7ff Mon Sep 17 00:00:00 2001
+From: Bakkeby <bakkeby@gmail.com>
+Date: Mon, 18 Jul 2022 16:52:03 +0200
+Subject: [PATCH] Adding anysize patch
+
+---
+ x.c | 56 ++++++++++++++++++++++++++++++--------------------------
+ 1 file changed, 30 insertions(+), 26 deletions(-)
+
+diff --git a/x.c b/x.c
+index 2a3bd38..f534347 100644
+--- a/x.c
++++ b/x.c
+@@ -81,6 +81,7 @@ typedef XftGlyphFontSpec GlyphFontSpec;
+ typedef struct {
+ int tw, th; /* tty width and height */
+ int w, h; /* window width and height */
++ int hborderpx, vborderpx;
+ int ch; /* char height */
+ int cw; /* char width */
+ int mode; /* window state/mode flags */
+@@ -331,7 +332,7 @@ ttysend(const Arg *arg)
+ int
+ evcol(XEvent *e)
+ {
+- int x = e->xbutton.x - borderpx;
++ int x = e->xbutton.x - win.hborderpx;
+ LIMIT(x, 0, win.tw - 1);
+ return x / win.cw;
+ }
+@@ -339,7 +340,7 @@ evcol(XEvent *e)
+ int
+ evrow(XEvent *e)
+ {
+- int y = e->xbutton.y - borderpx;
++ int y = e->xbutton.y - win.vborderpx;
+ LIMIT(y, 0, win.th - 1);
+ return y / win.ch;
+ }
+@@ -739,6 +740,9 @@ cresize(int width, int height)
+ col = MAX(1, col);
+ row = MAX(1, row);
+
++ win.hborderpx = (win.w - col * win.cw) / 2;
++ win.vborderpx = (win.h - row * win.ch) / 2;
++
+ tresize(col, row);
+ xresize(col, row);
+ ttyresize(win.tw, win.th);
+@@ -869,8 +873,8 @@ xhints(void)
+ sizeh->flags = PSize | PResizeInc | PBaseSize | PMinSize;
+ sizeh->height = win.h;
+ sizeh->width = win.w;
+- sizeh->height_inc = win.ch;
+- sizeh->width_inc = win.cw;
++ sizeh->height_inc = 1;
++ sizeh->width_inc = 1;
+ sizeh->base_height = 2 * borderpx;
+ sizeh->base_width = 2 * borderpx;
+ sizeh->min_height = win.ch + 2 * borderpx;
+@@ -1152,8 +1156,8 @@ xinit(int cols, int rows)
+ xloadcols();
+
+ /* adjust fixed window geometry */
+- win.w = 2 * borderpx + cols * win.cw;
+- win.h = 2 * borderpx + rows * win.ch;
++ win.w = 2 * win.hborderpx + 2 * borderpx + cols * win.cw;
++ win.h = 2 * win.vborderpx + 2 * borderpx + rows * win.ch;
+ if (xw.gm & XNegative)
+ xw.l += DisplayWidth(xw.dpy, xw.scr) - win.w - 2;
+ if (xw.gm & YNegative)
+@@ -1242,7 +1246,7 @@ xinit(int cols, int rows)
+ int
+ xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int len, int x, int y)
+ {
+- float winx = borderpx + x * win.cw, winy = borderpx + y * win.ch, xp, yp;
++ float winx = win.hborderpx + x * win.cw, winy = win.vborderpx + y * win.ch, xp, yp;
+ ushort mode, prevmode = USHRT_MAX;
+ Font *font = &dc.font;
+ int frcflags = FRC_NORMAL;
+@@ -1375,7 +1379,7 @@ void
+ xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len, int x, int y)
+ {
+ int charlen = len * ((base.mode & ATTR_WIDE) ? 2 : 1);
+- int winx = borderpx + x * win.cw, winy = borderpx + y * win.ch,
++ int winx = win.hborderpx + x * win.cw, winy = win.vborderpx + y * win.ch,
+ width = charlen * win.cw;
+ Color *fg, *bg, *temp, revfg, revbg, truefg, truebg;
+ XRenderColor colfg, colbg;
+@@ -1465,17 +1469,17 @@ xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len, int x, i
+
+ /* Intelligent cleaning up of the borders. */
+ if (x == 0) {
+- xclear(0, (y == 0)? 0 : winy, borderpx,
++ xclear(0, (y == 0)? 0 : winy, win.hborderpx,
+ winy + win.ch +
+- ((winy + win.ch >= borderpx + win.th)? win.h : 0));
++ ((winy + win.ch >= win.vborderpx + win.th)? win.h : 0));
+ }
+- if (winx + width >= borderpx + win.tw) {
++ if (winx + width >= win.hborderpx + win.tw) {
+ xclear(winx + width, (y == 0)? 0 : winy, win.w,
+- ((winy + win.ch >= borderpx + win.th)? win.h : (winy + win.ch)));
++ ((winy + win.ch >= win.vborderpx + win.th)? win.h : (winy + win.ch)));
+ }
+ if (y == 0)
+- xclear(winx, 0, winx + width, borderpx);
+- if (winy + win.ch >= borderpx + win.th)
++ xclear(winx, 0, winx + width, win.vborderpx);
++ if (winy + win.ch >= win.vborderpx + win.th)
+ xclear(winx, winy + win.ch, winx + width, win.h);
+
+ /* Clean up the region we want to draw to. */
+@@ -1569,35 +1573,35 @@ xdrawcursor(int cx, int cy, Glyph g, int ox, int oy, Glyph og)
+ case 3: /* Blinking Underline */
+ case 4: /* Steady Underline */
+ XftDrawRect(xw.draw, &drawcol,
+- borderpx + cx * win.cw,
+- borderpx + (cy + 1) * win.ch - \
++ win.hborderpx + cx * win.cw,
++ win.vborderpx + (cy + 1) * win.ch - \
+ cursorthickness,
+ win.cw, cursorthickness);
+ break;
+ case 5: /* Blinking bar */
+ case 6: /* Steady bar */
+ XftDrawRect(xw.draw, &drawcol,
+- borderpx + cx * win.cw,
+- borderpx + cy * win.ch,
++ win.hborderpx + cx * win.cw,
++ win.vborderpx + cy * win.ch,
+ cursorthickness, win.ch);
+ break;
+ }
+ } else {
+ XftDrawRect(xw.draw, &drawcol,
+- borderpx + cx * win.cw,
+- borderpx + cy * win.ch,
++ win.hborderpx + cx * win.cw,
++ win.vborderpx + cy * win.ch,
+ win.cw - 1, 1);
+ XftDrawRect(xw.draw, &drawcol,
+- borderpx + cx * win.cw,
+- borderpx + cy * win.ch,
++ win.hborderpx + cx * win.cw,
++ win.vborderpx + cy * win.ch,
+ 1, win.ch - 1);
+ XftDrawRect(xw.draw, &drawcol,
+- borderpx + (cx + 1) * win.cw - 1,
+- borderpx + cy * win.ch,
++ win.hborderpx + (cx + 1) * win.cw - 1,
++ win.vborderpx + cy * win.ch,
+ 1, win.ch - 1);
+ XftDrawRect(xw.draw, &drawcol,
+- borderpx + cx * win.cw,
+- borderpx + (cy + 1) * win.ch - 1,
++ win.hborderpx + cx * win.cw,
++ win.vborderpx + (cy + 1) * win.ch - 1,
+ win.cw, 1);
+ }
+ }
+--
+2.37.1
+
diff --git a/st/st-kitty-graphics.diff b/st/st-kitty-graphics.diff
@@ -0,0 +1,7324 @@
+From 25d9cca81ce48141de7f6a823b006dddaafd9de8 Mon Sep 17 00:00:00 2001
+From: Sergei Grechanik <sergei.grechanik@gmail.com>
+Date: Sun, 22 Sep 2024 08:36:05 -0700
+Subject: [PATCH] Kitty graphics protocol support 7b717e3 2024-09-22
+
+This patch implements the kitty graphics protocol in st.
+See https://github.com/sergei-grechanik/st-graphics
+Created by squashing the graphics branch, the most recent
+commit is 7b717e38b1739e11356b34df9fdfdfa339960864 (2024-09-22).
+
+Squashed on top of a0274bc20e11d8672bb2953fdd1d3010c0e708c5
+
+Note that the following files were excluded from the squash:
+ .clang-format
+ README.md
+ generate-rowcolumn-helpers.py
+ rowcolumn-diacritics.txt
+ rowcolumn_diacritics.sh
+---
+ Makefile | 4 +-
+ config.def.h | 46 +-
+ config.mk | 5 +-
+ graphics.c | 3812 ++++++++++++++++++++++++++++++++
+ graphics.h | 107 +
+ icat-mini.sh | 801 +++++++
+ khash.h | 627 ++++++
+ kvec.h | 90 +
+ rowcolumn_diacritics_helpers.c | 391 ++++
+ st.c | 279 ++-
+ st.h | 84 +-
+ st.info | 6 +
+ win.h | 3 +
+ x.c | 411 +++-
+ 14 files changed, 6615 insertions(+), 51 deletions(-)
+ create mode 100644 graphics.c
+ create mode 100644 graphics.h
+ create mode 100755 icat-mini.sh
+ create mode 100644 khash.h
+ create mode 100644 kvec.h
+ create mode 100644 rowcolumn_diacritics_helpers.c
+
+diff --git a/Makefile b/Makefile
+index 15db421..e79b89e 100644
+--- a/Makefile
++++ b/Makefile
+@@ -4,7 +4,7 @@
+
+ include config.mk
+
+-SRC = st.c x.c
++SRC = st.c x.c rowcolumn_diacritics_helpers.c graphics.c
+ OBJ = $(SRC:.c=.o)
+
+ all: st
+@@ -16,7 +16,7 @@ config.h:
+ $(CC) $(STCFLAGS) -c $<
+
+ st.o: config.h st.h win.h
+-x.o: arg.h config.h st.h win.h
++x.o: arg.h config.h st.h win.h graphics.h
+
+ $(OBJ): config.h config.mk
+
+diff --git a/config.def.h b/config.def.h
+index 2cd740a..4aadbbc 100644
+--- a/config.def.h
++++ b/config.def.h
+@@ -8,6 +8,13 @@
+ static char *font = "Liberation Mono:pixelsize=12:antialias=true:autohint=true";
+ static int borderpx = 2;
+
++/* How to align the content in the window when the size of the terminal
++ * doesn't perfectly match the size of the window. The values are percentages.
++ * 50 means center, 0 means flush left/top, 100 means flush right/bottom.
++ */
++static int anysize_halign = 50;
++static int anysize_valign = 50;
++
+ /*
+ * What program is execed by st depends of these precedence rules:
+ * 1: program passed with -e
+@@ -23,7 +30,8 @@ char *scroll = NULL;
+ char *stty_args = "stty raw pass8 nl -echo -iexten -cstopb 38400";
+
+ /* identification sequence returned in DA and DECID */
+-char *vtiden = "\033[?6c";
++/* By default, use the same one as kitty. */
++char *vtiden = "\033[?62c";
+
+ /* Kerning / character bounding-box multipliers */
+ static float cwscale = 1.0;
+@@ -163,6 +171,28 @@ static unsigned int mousebg = 0;
+ */
+ static unsigned int defaultattr = 11;
+
++/*
++ * Graphics configuration
++ */
++
++/// The template for the cache directory.
++const char graphics_cache_dir_template[] = "/tmp/st-images-XXXXXX";
++/// The max size of a single image file, in bytes.
++unsigned graphics_max_single_image_file_size = 20 * 1024 * 1024;
++/// The max size of the cache, in bytes.
++unsigned graphics_total_file_cache_size = 300 * 1024 * 1024;
++/// The max ram size of an image or placement, in bytes.
++unsigned graphics_max_single_image_ram_size = 100 * 1024 * 1024;
++/// The max total size of all images loaded into RAM.
++unsigned graphics_max_total_ram_size = 300 * 1024 * 1024;
++/// The max total number of image placements and images.
++unsigned graphics_max_total_placements = 4096;
++/// The ratio by which limits can be exceeded. This is to reduce the frequency
++/// of image removal.
++double graphics_excess_tolerance_ratio = 0.05;
++/// The minimum delay between redraws caused by animations, in milliseconds.
++unsigned graphics_animation_min_delay = 20;
++
+ /*
+ * Force mouse select/shortcuts while mask is active (when MODE_MOUSE is set).
+ * Note that if you want to use ShiftMask with selmasks, set this to an other
+@@ -170,12 +200,18 @@ static unsigned int defaultattr = 11;
+ */
+ static uint forcemousemod = ShiftMask;
+
++/* Internal keyboard shortcuts. */
++#define MODKEY Mod1Mask
++#define TERMMOD (ControlMask|ShiftMask)
++
+ /*
+ * Internal mouse shortcuts.
+ * Beware that overloading Button1 will disable the selection.
+ */
+ static MouseShortcut mshortcuts[] = {
+ /* mask button function argument release */
++ { TERMMOD, Button3, previewimage, {.s = "feh"} },
++ { TERMMOD, Button2, showimageinfo, {}, 1 },
+ { XK_ANY_MOD, Button2, selpaste, {.i = 0}, 1 },
+ { ShiftMask, Button4, ttysend, {.s = "\033[5;2~"} },
+ { XK_ANY_MOD, Button4, ttysend, {.s = "\031"} },
+@@ -183,10 +219,6 @@ static MouseShortcut mshortcuts[] = {
+ { XK_ANY_MOD, Button5, ttysend, {.s = "\005"} },
+ };
+
+-/* Internal keyboard shortcuts. */
+-#define MODKEY Mod1Mask
+-#define TERMMOD (ControlMask|ShiftMask)
+-
+ static Shortcut shortcuts[] = {
+ /* mask keysym function argument */
+ { XK_ANY_MOD, XK_Break, sendbreak, {.i = 0} },
+@@ -201,6 +233,10 @@ static Shortcut shortcuts[] = {
+ { TERMMOD, XK_Y, selpaste, {.i = 0} },
+ { ShiftMask, XK_Insert, selpaste, {.i = 0} },
+ { TERMMOD, XK_Num_Lock, numlock, {.i = 0} },
++ { TERMMOD, XK_F1, togglegrdebug, {.i = 0} },
++ { TERMMOD, XK_F6, dumpgrstate, {.i = 0} },
++ { TERMMOD, XK_F7, unloadimages, {.i = 0} },
++ { TERMMOD, XK_F8, toggleimages, {.i = 0} },
+ };
+
+ /*
+diff --git a/config.mk b/config.mk
+index fdc29a7..cb2875c 100644
+--- a/config.mk
++++ b/config.mk
+@@ -14,9 +14,12 @@ PKG_CONFIG = pkg-config
+
+ # includes and libs
+ INCS = -I$(X11INC) \
++ `$(PKG_CONFIG) --cflags imlib2` \
+ `$(PKG_CONFIG) --cflags fontconfig` \
+ `$(PKG_CONFIG) --cflags freetype2`
+-LIBS = -L$(X11LIB) -lm -lrt -lX11 -lutil -lXft \
++LIBS = -L$(X11LIB) -lm -lrt -lX11 -lutil -lXft -lXrender \
++ `$(PKG_CONFIG) --libs imlib2` \
++ `$(PKG_CONFIG) --libs zlib` \
+ `$(PKG_CONFIG) --libs fontconfig` \
+ `$(PKG_CONFIG) --libs freetype2`
+
+diff --git a/graphics.c b/graphics.c
+new file mode 100644
+index 0000000..64e6fe0
+--- /dev/null
++++ b/graphics.c
+@@ -0,0 +1,3812 @@
++/* The MIT License
++
++ Copyright (c) 2021-2024 Sergei Grechanik <sergei.grechanik@gmail.com>
++
++ Permission is hereby granted, free of charge, to any person obtaining
++ a copy of this software and associated documentation files (the
++ "Software"), to deal in the Software without restriction, including
++ without limitation the rights to use, copy, modify, merge, publish,
++ distribute, sublicense, and/or sell copies of the Software, and to
++ permit persons to whom the Software is furnished to do so, subject to
++ the following conditions:
++
++ The above copyright notice and this permission notice shall be
++ included in all copies or substantial portions of the Software.
++
++ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
++ EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
++ MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
++ NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
++ BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
++ ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
++ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
++ SOFTWARE.
++*/
++
++////////////////////////////////////////////////////////////////////////////////
++//
++// This file implements a subset of the kitty graphics protocol.
++//
++////////////////////////////////////////////////////////////////////////////////
++
++#define _POSIX_C_SOURCE 200809L
++
++#include <zlib.h>
++#include <Imlib2.h>
++#include <X11/Xlib.h>
++#include <X11/extensions/Xrender.h>
++#include <assert.h>
++#include <ctype.h>
++#include <spawn.h>
++#include <stdarg.h>
++#include <stdio.h>
++#include <stdlib.h>
++#include <string.h>
++#include <sys/stat.h>
++#include <time.h>
++#include <unistd.h>
++#include <errno.h>
++
++#include "graphics.h"
++#include "khash.h"
++#include "kvec.h"
++
++extern char **environ;
++
++#define MAX_FILENAME_SIZE 256
++#define MAX_INFO_LEN 256
++#define MAX_IMAGE_RECTS 20
++
++/// The type used in this file to represent time. Used both for time differences
++/// and absolute times (as milliseconds since an arbitrary point in time, see
++/// `initialization_time`).
++typedef int64_t Milliseconds;
++
++enum ScaleMode {
++ SCALE_MODE_UNSET = 0,
++ /// Stretch or shrink the image to fill the box, ignoring aspect ratio.
++ SCALE_MODE_FILL = 1,
++ /// Preserve aspect ratio and fit to width or to height so that the
++ /// whole image is visible.
++ SCALE_MODE_CONTAIN = 2,
++ /// Do not scale. The image may be cropped if the box is too small.
++ SCALE_MODE_NONE = 3,
++ /// Do not scale, unless the box is too small, in which case the image
++ /// will be shrunk like with `SCALE_MODE_CONTAIN`.
++ SCALE_MODE_NONE_OR_CONTAIN = 4,
++};
++
++enum AnimationState {
++ ANIMATION_STATE_UNSET = 0,
++ /// The animation is stopped. Display the current frame, but don't
++ /// advance to the next one.
++ ANIMATION_STATE_STOPPED = 1,
++ /// Run the animation to then end, then wait for the next frame.
++ ANIMATION_STATE_LOADING = 2,
++ /// Run the animation in a loop.
++ ANIMATION_STATE_LOOPING = 3,
++};
++
++/// The status of an image. Each image uploaded to the terminal is cached on
++/// disk, then it is loaded to ram when needed.
++enum ImageStatus {
++ STATUS_UNINITIALIZED = 0,
++ STATUS_UPLOADING = 1,
++ STATUS_UPLOADING_ERROR = 2,
++ STATUS_UPLOADING_SUCCESS = 3,
++ STATUS_RAM_LOADING_ERROR = 4,
++ STATUS_RAM_LOADING_IN_PROGRESS = 5,
++ STATUS_RAM_LOADING_SUCCESS = 6,
++};
++
++const char *image_status_strings[6] = {
++ "STATUS_UNINITIALIZED",
++ "STATUS_UPLOADING",
++ "STATUS_UPLOADING_ERROR",
++ "STATUS_UPLOADING_SUCCESS",
++ "STATUS_RAM_LOADING_ERROR",
++ "STATUS_RAM_LOADING_SUCCESS",
++};
++
++enum ImageUploadingFailure {
++ ERROR_OVER_SIZE_LIMIT = 1,
++ ERROR_CANNOT_OPEN_CACHED_FILE = 2,
++ ERROR_UNEXPECTED_SIZE = 3,
++ ERROR_CANNOT_COPY_FILE = 4,
++};
++
++const char *image_uploading_failure_strings[5] = {
++ "NO_ERROR",
++ "ERROR_OVER_SIZE_LIMIT",
++ "ERROR_CANNOT_OPEN_CACHED_FILE",
++ "ERROR_UNEXPECTED_SIZE",
++ "ERROR_CANNOT_COPY_FILE",
++};
++
++////////////////////////////////////////////////////////////////////////////////
++//
++// We use the following structures to represent images and placements:
++//
++// - Image: this is the main structure representing an image, usually created
++// by actions 'a=t', 'a=T`. Each image has an id (image id aka client id,
++// specified by 'i='). An image may have multiple frames (ImageFrame) and
++// placements (ImagePlacement).
++//
++// - ImageFrame: represents a single frame of an image, usually created by
++// the action 'a=f' (and the first frame is created with the image itself).
++// Each frame has an index and also:
++// - a file containing the frame data (considered to be "on disk", although
++// it's probably in tmpfs),
++// - an imlib object containing the fully composed frame (i.e. the frame
++// data from the file composed onto the background frame or color). It is
++// not ready for display yet, because it needs to be scaled and uploaded
++// to the X server.
++//
++// - ImagePlacement: represents a placement of an image, created by 'a=p' and
++// 'a=T'. Each placement has an id (placement id, specified by 'p='). Also
++// each placement has an array of pixmaps: one for each frame of the image.
++// Each pixmap is a scaled and uploaded image ready to be displayed.
++//
++// Images are store in the `images` hash table, mapping image ids to Image
++// objects (allocated on the heap).
++//
++// Placements are stored in the `placements` hash table of each Image object,
++// mapping placement ids to ImagePlacement objects (also allocated on the heap).
++//
++// ImageFrames are stored in the `first_frame` field and in the
++// `frames_beyond_the_first` array of each Image object. They are stored by
++// value, so ImageFrame pointer may be invalidated when frames are
++// added/deleted, be careful.
++//
++////////////////////////////////////////////////////////////////////////////////
++
++struct Image;
++struct ImageFrame;
++struct ImagePlacement;
++
++KHASH_MAP_INIT_INT(id2image, struct Image *)
++KHASH_MAP_INIT_INT(id2placement, struct ImagePlacement *)
++
++typedef struct ImageFrame {
++ /// The image this frame belongs to.
++ struct Image *image;
++ /// The 1-based index of the frame. Zero if the frame isn't initialized.
++ int index;
++ /// The last time when the frame was displayed or otherwise touched.
++ Milliseconds atime;
++ /// The background color of the frame in the 0xRRGGBBAA format.
++ uint32_t background_color;
++ /// The index of the background frame. Zero to use the color instead.
++ int background_frame_index;
++ /// The duration of the frame in milliseconds.
++ int gap;
++ /// The expected size of the frame image file (specified with 'S='),
++ /// used to check if uploading succeeded.
++ unsigned expected_size;
++ /// Format specification (see the `f=` key).
++ int format;
++ /// Pixel width and height of the non-composed (on-disk) frame data. May
++ /// differ from the image (i.e. first frame) dimensions.
++ int data_pix_width, data_pix_height;
++ /// The offset of the frame relative to the first frame.
++ int x, y;
++ /// Compression mode (see the `o=` key).
++ char compression;
++ /// The status (see `ImageStatus`).
++ char status;
++ /// The reason of uploading failure (see `ImageUploadingFailure`).
++ char uploading_failure;
++ /// Whether failures and successes should be reported ('q=').
++ char quiet;
++ /// Whether to blend the frame with the background or replace it.
++ char blend;
++ /// The file corresponding to the on-disk cache, used when uploading.
++ FILE *open_file;
++ /// The size of the corresponding file cached on disk.
++ unsigned disk_size;
++ /// The imlib object containing the fully composed frame. It's not
++ /// scaled for screen display yet.
++ Imlib_Image imlib_object;
++} ImageFrame;
++
++typedef struct Image {
++ /// The client id (the one specified with 'i='). Must be nonzero.
++ uint32_t image_id;
++ /// The client id specified in the query command (`a=q`). This one must
++ /// be used to create the response if it's non-zero.
++ uint32_t query_id;
++ /// The number specified in the transmission command (`I=`). If
++ /// non-zero, it may be used to identify the image instead of the
++ /// image_id, and it also should be mentioned in responses.
++ uint32_t image_number;
++ /// The last time when the image was displayed or otherwise touched.
++ Milliseconds atime;
++ /// The total duration of the animation in milliseconds.
++ int total_duration;
++ /// The total size of cached image files for all frames.
++ int total_disk_size;
++ /// The global index of the creation command. Used to decide which image
++ /// is newer if they have the same image number.
++ uint64_t global_command_index;
++ /// The 1-based index of the currently displayed frame.
++ int current_frame;
++ /// The state of the animation, see `AnimationState`.
++ char animation_state;
++ /// The absolute time that is assumed to be the start of the current
++ /// frame (in ms since initialization).
++ Milliseconds current_frame_time;
++ /// The absolute time of the last redraw (in ms since initialization).
++ /// Used to check whether it's the first time we draw the image in the
++ /// current redraw cycle.
++ Milliseconds last_redraw;
++ /// The absolute time of the next redraw (in ms since initialization).
++ /// 0 means no redraw is scheduled.
++ Milliseconds next_redraw;
++ /// The unscaled pixel width and height of the image. Usually inherited
++ /// from the first frame.
++ int pix_width, pix_height;
++ /// The first frame.
++ ImageFrame first_frame;
++ /// The array of frames beyond the first one.
++ kvec_t(ImageFrame) frames_beyond_the_first;
++ /// Image placements.
++ khash_t(id2placement) *placements;
++ /// The default placement.
++ uint32_t default_placement;
++ /// The initial placement id, specified with the transmission command,
++ /// used to report success or failure.
++ uint32_t initial_placement_id;
++} Image;
++
++typedef struct ImagePlacement {
++ /// The image this placement belongs to.
++ Image *image;
++ /// The id of the placement. Must be nonzero.
++ uint32_t placement_id;
++ /// The last time when the placement was displayed or otherwise touched.
++ Milliseconds atime;
++ /// The 1-based index of the protected pixmap. We protect a pixmap in
++ /// gr_load_pixmap to avoid unloading it right after it was loaded.
++ int protected_frame;
++ /// Whether the placement is used only for Unicode placeholders.
++ char virtual;
++ /// The scaling mode (see `ScaleMode`).
++ char scale_mode;
++ /// Height and width in cells.
++ uint16_t rows, cols;
++ /// Top-left corner of the source rectangle ('x=' and 'y=').
++ int src_pix_x, src_pix_y;
++ /// Height and width of the source rectangle (zero if full image).
++ int src_pix_width, src_pix_height;
++ /// The image appropriately scaled and uploaded to the X server. This
++ /// pixmap is premultiplied by alpha.
++ Pixmap first_pixmap;
++ /// The array of pixmaps beyond the first one.
++ kvec_t(Pixmap) pixmaps_beyond_the_first;
++ /// The dimensions of the cell used to scale the image. If cell
++ /// dimensions are changed (font change), the image will be rescaled.
++ uint16_t scaled_cw, scaled_ch;
++ /// If true, do not move the cursor when displaying this placement
++ /// (non-virtual placements only).
++ char do_not_move_cursor;
++} ImagePlacement;
++
++/// A rectangular piece of an image to be drawn.
++typedef struct {
++ uint32_t image_id;
++ uint32_t placement_id;
++ /// The position of the rectangle in pixels.
++ int screen_x_pix, screen_y_pix;
++ /// The starting row on the screen.
++ int screen_y_row;
++ /// The part of the whole image to be drawn, in cells. Starts are
++ /// zero-based, ends are exclusive.
++ int img_start_col, img_end_col, img_start_row, img_end_row;
++ /// The current cell width and height in pixels.
++ int cw, ch;
++ /// Whether colors should be inverted.
++ int reverse;
++} ImageRect;
++
++/// Executes `code` for each frame of an image. Example:
++///
++/// foreach_frame(image, frame, {
++/// printf("Frame %d\n", frame->index);
++/// });
++///
++#define foreach_frame(image, framevar, code) { size_t __i; \
++ for (__i = 0; __i <= kv_size((image).frames_beyond_the_first); ++__i) { \
++ ImageFrame *framevar = \
++ __i == 0 ? &(image).first_frame \
++ : &kv_A((image).frames_beyond_the_first, __i - 1); \
++ code; \
++ } }
++
++/// Executes `code` for each pixmap of a placement. Example:
++///
++/// foreach_pixmap(placement, pixmap, {
++/// ...
++/// });
++///
++#define foreach_pixmap(placement, pixmapvar, code) { size_t __i; \
++ for (__i = 0; __i <= kv_size((placement).pixmaps_beyond_the_first); ++__i) { \
++ Pixmap pixmapvar = \
++ __i == 0 ? (placement).first_pixmap \
++ : kv_A((placement).pixmaps_beyond_the_first, __i - 1); \
++ code; \
++ } }
++
++
++static Image *gr_find_image(uint32_t image_id);
++static void gr_get_frame_filename(ImageFrame *frame, char *out, size_t max_len);
++static void gr_delete_image(Image *img);
++static void gr_check_limits();
++static char *gr_base64dec(const char *src, size_t *size);
++static void sanitize_str(char *str, size_t max_len);
++static const char *sanitized_filename(const char *str);
++
++/// The array of image rectangles to draw. It is reset each frame.
++static ImageRect image_rects[MAX_IMAGE_RECTS] = {{0}};
++/// The known images (including the ones being uploaded).
++static khash_t(id2image) *images = NULL;
++/// The total number of placements in all images.
++static unsigned total_placement_count = 0;
++/// The total size of all image files stored in the on-disk cache.
++static int64_t images_disk_size = 0;
++/// The total size of all images and placements loaded into ram.
++static int64_t images_ram_size = 0;
++/// The id of the last loaded image.
++static uint32_t last_image_id = 0;
++/// Current cell width and heigh in pixels.
++static int current_cw = 0, current_ch = 0;
++/// The id of the currently uploaded image (when using direct uploading).
++static uint32_t current_upload_image_id = 0;
++/// The index of the frame currently being uploaded.
++static int current_upload_frame_index = 0;
++/// The time when the graphics module was initialized.
++static struct timespec initialization_time = {0};
++/// The time when the current frame drawing started, used for debugging fps and
++/// to calculate the current frame for animations.
++static Milliseconds drawing_start_time;
++/// The global index of the current command.
++static uint64_t global_command_counter = 0;
++/// The next redraw times for each row of the terminal. Used for animations.
++/// 0 means no redraw is scheduled.
++static kvec_t(Milliseconds) next_redraw_times = {0, 0, NULL};
++/// The number of files loaded in the current redraw cycle.
++static int this_redraw_cycle_loaded_files = 0;
++/// The number of pixmaps loaded in the current redraw cycle.
++static int this_redraw_cycle_loaded_pixmaps = 0;
++
++/// The directory where the cache files are stored.
++static char cache_dir[MAX_FILENAME_SIZE - 16];
++
++/// The table used for color inversion.
++static unsigned char reverse_table[256];
++
++// Declared in the header.
++GraphicsDebugMode graphics_debug_mode = GRAPHICS_DEBUG_NONE;
++char graphics_display_images = 1;
++GraphicsCommandResult graphics_command_result = {0};
++int graphics_next_redraw_delay = INT_MAX;
++
++// Defined in config.h
++extern const char graphics_cache_dir_template[];
++extern unsigned graphics_max_single_image_file_size;
++extern unsigned graphics_total_file_cache_size;
++extern unsigned graphics_max_single_image_ram_size;
++extern unsigned graphics_max_total_ram_size;
++extern unsigned graphics_max_total_placements;
++extern double graphics_excess_tolerance_ratio;
++extern unsigned graphics_animation_min_delay;
++
++
++////////////////////////////////////////////////////////////////////////////////
++// Basic helpers.
++////////////////////////////////////////////////////////////////////////////////
++
++#define MIN(a, b) ((a) < (b) ? (a) : (b))
++#define MAX(a, b) ((a) < (b) ? (b) : (a))
++
++/// Returns the difference between `end` and `start` in milliseconds.
++static int64_t gr_timediff_ms(const struct timespec *end,
++ const struct timespec *start) {
++ return (end->tv_sec - start->tv_sec) * 1000 +
++ (end->tv_nsec - start->tv_nsec) / 1000000;
++}
++
++/// Returns the current time in milliseconds since the initialization.
++static Milliseconds gr_now_ms() {
++ struct timespec now;
++ clock_gettime(CLOCK_MONOTONIC, &now);
++ return gr_timediff_ms(&now, &initialization_time);
++}
++
++////////////////////////////////////////////////////////////////////////////////
++// Logging.
++////////////////////////////////////////////////////////////////////////////////
++
++#define GR_LOG(...) \
++ do { if(graphics_debug_mode) fprintf(stderr, __VA_ARGS__); } while(0)
++
++////////////////////////////////////////////////////////////////////////////////
++// Basic image management functions (create, delete, find, etc).
++////////////////////////////////////////////////////////////////////////////////
++
++/// Returns the 1-based index of the last frame. Note that you may want to use
++/// `gr_last_uploaded_frame_index` instead since the last frame may be not
++/// fully uploaded yet.
++static inline int gr_last_frame_index(Image *img) {
++ return kv_size(img->frames_beyond_the_first) + 1;
++}
++
++/// Returns the frame with the given index. Returns NULL if the index is out of
++/// bounds. The index is 1-based.
++static ImageFrame *gr_get_frame(Image *img, int index) {
++ if (!img)
++ return NULL;
++ if (index == 1)
++ return &img->first_frame;
++ if (2 <= index && index <= gr_last_frame_index(img))
++ return &kv_A(img->frames_beyond_the_first, index - 2);
++ return NULL;
++}
++
++/// Returns the last frame of the image. Returns NULL if `img` is NULL.
++static ImageFrame *gr_get_last_frame(Image *img) {
++ if (!img)
++ return NULL;
++ return gr_get_frame(img, gr_last_frame_index(img));
++}
++
++/// Returns the 1-based index of the last frame or the second-to-last frame if
++/// the last frame is not fully uploaded yet.
++static inline int gr_last_uploaded_frame_index(Image *img) {
++ int last_index = gr_last_frame_index(img);
++ if (last_index > 1 &&
++ gr_get_frame(img, last_index)->status < STATUS_UPLOADING_SUCCESS)
++ return last_index - 1;
++ return last_index;
++}
++
++/// Returns the pixmap for the frame with the given index. Returns 0 if the
++/// index is out of bounds. The index is 1-based.
++static Pixmap gr_get_frame_pixmap(ImagePlacement *placement, int index) {
++ if (index == 1)
++ return placement->first_pixmap;
++ if (2 <= index &&
++ index <= kv_size(placement->pixmaps_beyond_the_first) + 1)
++ return kv_A(placement->pixmaps_beyond_the_first, index - 2);
++ return 0;
++}
++
++/// Sets the pixmap for the frame with the given index. The index is 1-based.
++/// The array of pixmaps is resized if needed.
++static void gr_set_frame_pixmap(ImagePlacement *placement, int index,
++ Pixmap pixmap) {
++ if (index == 1) {
++ placement->first_pixmap = pixmap;
++ return;
++ }
++ // Resize the array if needed.
++ size_t old_size = kv_size(placement->pixmaps_beyond_the_first);
++ if (old_size < index - 1) {
++ kv_a(Pixmap, placement->pixmaps_beyond_the_first, index - 2);
++ for (size_t i = old_size; i < index - 1; i++)
++ kv_A(placement->pixmaps_beyond_the_first, i) = 0;
++ }
++ kv_A(placement->pixmaps_beyond_the_first, index - 2) = pixmap;
++}
++
++/// Finds the image corresponding to the client id. Returns NULL if cannot find.
++static Image *gr_find_image(uint32_t image_id) {
++ khiter_t k = kh_get(id2image, images, image_id);
++ if (k == kh_end(images))
++ return NULL;
++ Image *res = kh_value(images, k);
++ return res;
++}
++
++/// Finds the newest image corresponding to the image number. Returns NULL if
++/// cannot find.
++static Image *gr_find_image_by_number(uint32_t image_number) {
++ if (image_number == 0)
++ return NULL;
++ Image *newest_img = NULL;
++ Image *img = NULL;
++ kh_foreach_value(images, img, {
++ if (img->image_number == image_number &&
++ (!newest_img || newest_img->global_command_index <
++ img->global_command_index))
++ newest_img = img;
++ });
++ if (!newest_img)
++ GR_LOG("Image number %u not found\n", image_number);
++ else
++ GR_LOG("Found image number %u, its id is %u\n", image_number,
++ img->image_id);
++ return newest_img;
++}
++
++/// Finds the placement corresponding to the id. If the placement id is 0,
++/// returns some default placement.
++static ImagePlacement *gr_find_placement(Image *img, uint32_t placement_id) {
++ if (!img)
++ return NULL;
++ if (placement_id == 0) {
++ // Try to get the default placement.
++ ImagePlacement *dflt = NULL;
++ if (img->default_placement != 0)
++ dflt = gr_find_placement(img, img->default_placement);
++ if (dflt)
++ return dflt;
++ // If there is no default placement, return the first one and
++ // set it as the default.
++ kh_foreach_value(img->placements, dflt, {
++ img->default_placement = dflt->placement_id;
++ return dflt;
++ });
++ // If there are no placements, return NULL.
++ return NULL;
++ }
++ khiter_t k = kh_get(id2placement, img->placements, placement_id);
++ if (k == kh_end(img->placements))
++ return NULL;
++ ImagePlacement *res = kh_value(img->placements, k);
++ return res;
++}
++
++/// Finds the placement by image id and placement id.
++static ImagePlacement *gr_find_image_and_placement(uint32_t image_id,
++ uint32_t placement_id) {
++ return gr_find_placement(gr_find_image(image_id), placement_id);
++}
++
++/// Writes the name of the on-disk cache file to `out`. `max_len` should be the
++/// size of `out`. The name will be something like
++/// "/tmp/st-images-xxx/img-ID-FRAME".
++static void gr_get_frame_filename(ImageFrame *frame, char *out,
++ size_t max_len) {
++ snprintf(out, max_len, "%s/img-%.3u-%.3u", cache_dir,
++ frame->image->image_id, frame->index);
++}
++
++/// Returns the (estimation) of the RAM size used by the frame right now.
++static unsigned gr_frame_current_ram_size(ImageFrame *frame) {
++ if (!frame->imlib_object)
++ return 0;
++ return (unsigned)frame->image->pix_width * frame->image->pix_height * 4;
++}
++
++/// Returns the (estimation) of the RAM size used by a single frame pixmap.
++static unsigned gr_placement_single_frame_ram_size(ImagePlacement *placement) {
++ return (unsigned)placement->rows * placement->cols *
++ placement->scaled_ch * placement->scaled_cw * 4;
++}
++
++/// Returns the (estimation) of the RAM size used by the placemenet right now.
++static unsigned gr_placement_current_ram_size(ImagePlacement *placement) {
++ unsigned single_frame_size =
++ gr_placement_single_frame_ram_size(placement);
++ unsigned result = 0;
++ foreach_pixmap(*placement, pixmap, {
++ if (pixmap)
++ result += single_frame_size;
++ });
++ return result;
++}
++
++/// Unload the frame from RAM (i.e. delete the corresponding imlib object).
++/// If the on-disk file of the frame is preserved, it can be reloaded later.
++static void gr_unload_frame(ImageFrame *frame) {
++ if (!frame->imlib_object)
++ return;
++
++ unsigned frame_ram_size = gr_frame_current_ram_size(frame);
++ images_ram_size -= frame_ram_size;
++
++ imlib_context_set_image(frame->imlib_object);
++ imlib_free_image_and_decache();
++ frame->imlib_object = NULL;
++
++ GR_LOG("After unloading image %u frame %u (atime %ld ms ago) "
++ "ram: %ld KiB (- %u KiB)\n",
++ frame->image->image_id, frame->index,
++ drawing_start_time - frame->atime, images_ram_size / 1024,
++ frame_ram_size / 1024);
++}
++
++/// Unload all frames of the image.
++static void gr_unload_all_frames(Image *img) {
++ foreach_frame(*img, frame, {
++ gr_unload_frame(frame);
++ });
++}
++
++/// Unload the placement from RAM (i.e. free all of the corresponding pixmaps).
++/// If the on-disk files or imlib objects of the corresponding image are
++/// preserved, the placement can be reloaded later.
++static void gr_unload_placement(ImagePlacement *placement) {
++ unsigned placement_ram_size = gr_placement_current_ram_size(placement);
++ images_ram_size -= placement_ram_size;
++
++ Display *disp = imlib_context_get_display();
++ foreach_pixmap(*placement, pixmap, {
++ if (pixmap)
++ XFreePixmap(disp, pixmap);
++ });
++
++ placement->first_pixmap = 0;
++ placement->pixmaps_beyond_the_first.n = 0;
++ placement->scaled_ch = placement->scaled_cw = 0;
++
++ GR_LOG("After unloading placement %u/%u (atime %ld ms ago) "
++ "ram: %ld KiB (- %u KiB)\n",
++ placement->image->image_id, placement->placement_id,
++ drawing_start_time - placement->atime, images_ram_size / 1024,
++ placement_ram_size / 1024);
++}
++
++/// Unload a single pixmap of the placement from RAM.
++static void gr_unload_pixmap(ImagePlacement *placement, int frameidx) {
++ Pixmap pixmap = gr_get_frame_pixmap(placement, frameidx);
++ if (!pixmap)
++ return;
++
++ Display *disp = imlib_context_get_display();
++ XFreePixmap(disp, pixmap);
++ gr_set_frame_pixmap(placement, frameidx, 0);
++ images_ram_size -= gr_placement_single_frame_ram_size(placement);
++
++ GR_LOG("After unloading pixmap %ld of "
++ "placement %u/%u (atime %ld ms ago) "
++ "frame %u (atime %ld ms ago) "
++ "ram: %ld KiB (- %u KiB)\n",
++ pixmap, placement->image->image_id, placement->placement_id,
++ drawing_start_time - placement->atime, frameidx,
++ drawing_start_time -
++ gr_get_frame(placement->image, frameidx)->atime,
++ images_ram_size / 1024,
++ gr_placement_single_frame_ram_size(placement) / 1024);
++}
++
++/// Deletes the on-disk cache file corresponding to the frame. The in-ram image
++/// object (if it exists) is not deleted, placements are not unloaded either.
++static void gr_delete_imagefile(ImageFrame *frame) {
++ // It may still be being loaded. Close the file in this case.
++ if (frame->open_file) {
++ fclose(frame->open_file);
++ frame->open_file = NULL;
++ }
++
++ if (frame->disk_size == 0)
++ return;
++
++ char filename[MAX_FILENAME_SIZE];
++ gr_get_frame_filename(frame, filename, MAX_FILENAME_SIZE);
++ remove(filename);
++
++ unsigned disk_size = frame->disk_size;
++ images_disk_size -= disk_size;
++ frame->image->total_disk_size -= disk_size;
++ frame->disk_size = 0;
++
++ GR_LOG("After deleting image file %u frame %u (atime %ld ms ago) "
++ "disk: %ld KiB (- %u KiB)\n",
++ frame->image->image_id, frame->index,
++ drawing_start_time - frame->atime, images_disk_size / 1024,
++ disk_size / 1024);
++}
++
++/// Deletes all on-disk cache files of the image (for each frame).
++static void gr_delete_imagefiles(Image *img) {
++ foreach_frame(*img, frame, {
++ gr_delete_imagefile(frame);
++ });
++}
++
++/// Deletes the given placement: unloads, frees the object, but doesn't change
++/// the `placements` hash table.
++static void gr_delete_placement_keep_id(ImagePlacement *placement) {
++ if (!placement)
++ return;
++ GR_LOG("Deleting placement %u/%u\n", placement->image->image_id,
++ placement->placement_id);
++ gr_unload_placement(placement);
++ kv_destroy(placement->pixmaps_beyond_the_first);
++ free(placement);
++ total_placement_count--;
++}
++
++/// Deletes all placements of `img`.
++static void gr_delete_all_placements(Image *img) {
++ ImagePlacement *placement = NULL;
++ kh_foreach_value(img->placements, placement, {
++ gr_delete_placement_keep_id(placement);
++ });
++ kh_clear(id2placement, img->placements);
++}
++
++/// Deletes the given image: unloads, deletes the file, frees the Image object,
++/// but doesn't change the `images` hash table.
++static void gr_delete_image_keep_id(Image *img) {
++ if (!img)
++ return;
++ GR_LOG("Deleting image %u\n", img->image_id);
++ foreach_frame(*img, frame, {
++ gr_delete_imagefile(frame);
++ gr_unload_frame(frame);
++ });
++ kv_destroy(img->frames_beyond_the_first);
++ gr_delete_all_placements(img);
++ kh_destroy(id2placement, img->placements);
++ free(img);
++}
++
++/// Deletes the given image: unloads, deletes the file, frees the Image object,
++/// and also removes it from `images`.
++static void gr_delete_image(Image *img) {
++ if (!img)
++ return;
++ uint32_t id = img->image_id;
++ gr_delete_image_keep_id(img);
++ khiter_t k = kh_get(id2image, images, id);
++ kh_del(id2image, images, k);
++}
++
++/// Deletes the given placement: unloads, frees the object, and also removes it
++/// from `placements`.
++static void gr_delete_placement(ImagePlacement *placement) {
++ if (!placement)
++ return;
++ uint32_t id = placement->placement_id;
++ Image *img = placement->image;
++ gr_delete_placement_keep_id(placement);
++ khiter_t k = kh_get(id2placement, img->placements, id);
++ kh_del(id2placement, img->placements, k);
++}
++
++/// Deletes all images and clears `images`.
++static void gr_delete_all_images() {
++ Image *img = NULL;
++ kh_foreach_value(images, img, {
++ gr_delete_image_keep_id(img);
++ });
++ kh_clear(id2image, images);
++}
++
++/// Update the atime of the image.
++static void gr_touch_image(Image *img) {
++ img->atime = gr_now_ms();
++}
++
++/// Update the atime of the frame.
++static void gr_touch_frame(ImageFrame *frame) {
++ frame->image->atime = frame->atime = gr_now_ms();
++}
++
++/// Update the atime of the placement. Touches the images too.
++static void gr_touch_placement(ImagePlacement *placement) {
++ placement->image->atime = placement->atime = gr_now_ms();
++}
++
++/// Creates a new image with the given id. If an image with that id already
++/// exists, it is deleted first. If the provided id is 0, generates a
++/// random id.
++static Image *gr_new_image(uint32_t id) {
++ if (id == 0) {
++ do {
++ id = rand();
++ // Avoid IDs that don't need full 32 bits.
++ } while ((id & 0xFF000000) == 0 || (id & 0x00FFFF00) == 0 ||
++ gr_find_image(id));
++ GR_LOG("Generated random image id %u\n", id);
++ }
++ Image *img = gr_find_image(id);
++ gr_delete_image_keep_id(img);
++ GR_LOG("Creating image %u\n", id);
++ img = malloc(sizeof(Image));
++ memset(img, 0, sizeof(Image));
++ img->placements = kh_init(id2placement);
++ int ret;
++ khiter_t k = kh_put(id2image, images, id, &ret);
++ kh_value(images, k) = img;
++ img->image_id = id;
++ gr_touch_image(img);
++ img->global_command_index = global_command_counter;
++ return img;
++}
++
++/// Creates a new frame at the end of the frame array. It may be the first frame
++/// if there are no frames yet.
++static ImageFrame *gr_append_new_frame(Image *img) {
++ ImageFrame *frame = NULL;
++ if (img->first_frame.index == 0 &&
++ kv_size(img->frames_beyond_the_first) == 0) {
++ frame = &img->first_frame;
++ frame->index = 1;
++ } else {
++ frame = kv_pushp(ImageFrame, img->frames_beyond_the_first);
++ memset(frame, 0, sizeof(ImageFrame));
++ frame->index = kv_size(img->frames_beyond_the_first) + 1;
++ }
++ frame->image = img;
++ gr_touch_frame(frame);
++ GR_LOG("Appending frame %d to image %u\n", frame->index, img->image_id);
++ return frame;
++}
++
++/// Creates a new placement with the given id. If a placement with that id
++/// already exists, it is deleted first. If the provided id is 0, generates a
++/// random id.
++static ImagePlacement *gr_new_placement(Image *img, uint32_t id) {
++ if (id == 0) {
++ do {
++ // Currently we support only 24-bit IDs.
++ id = rand() & 0xFFFFFF;
++ // Avoid IDs that need only one byte.
++ } while ((id & 0x00FFFF00) == 0 || gr_find_placement(img, id));
++ }
++ ImagePlacement *placement = gr_find_placement(img, id);
++ gr_delete_placement_keep_id(placement);
++ GR_LOG("Creating placement %u/%u\n", img->image_id, id);
++ placement = malloc(sizeof(ImagePlacement));
++ memset(placement, 0, sizeof(ImagePlacement));
++ total_placement_count++;
++ int ret;
++ khiter_t k = kh_put(id2placement, img->placements, id, &ret);
++ kh_value(img->placements, k) = placement;
++ placement->image = img;
++ placement->placement_id = id;
++ gr_touch_placement(placement);
++ if (img->default_placement == 0)
++ img->default_placement = id;
++ return placement;
++}
++
++static int64_t ceil_div(int64_t a, int64_t b) {
++ return (a + b - 1) / b;
++}
++
++/// Computes the best number of rows and columns for a placement if it's not
++/// specified, and also adjusts the source rectangle size.
++static void gr_infer_placement_size_maybe(ImagePlacement *placement) {
++ // The size of the image.
++ int image_pix_width = placement->image->pix_width;
++ int image_pix_height = placement->image->pix_height;
++ // Negative values are not allowed. Quietly set them to 0.
++ if (placement->src_pix_x < 0)
++ placement->src_pix_x = 0;
++ if (placement->src_pix_y < 0)
++ placement->src_pix_y = 0;
++ if (placement->src_pix_width < 0)
++ placement->src_pix_width = 0;
++ if (placement->src_pix_height < 0)
++ placement->src_pix_height = 0;
++ // If the source rectangle is outside the image, truncate it.
++ if (placement->src_pix_x > image_pix_width)
++ placement->src_pix_x = image_pix_width;
++ if (placement->src_pix_y > image_pix_height)
++ placement->src_pix_y = image_pix_height;
++ // If the source rectangle is not specified, use the whole image. If
++ // it's partially outside the image, truncate it.
++ if (placement->src_pix_width == 0 ||
++ placement->src_pix_x + placement->src_pix_width > image_pix_width)
++ placement->src_pix_width =
++ image_pix_width - placement->src_pix_x;
++ if (placement->src_pix_height == 0 ||
++ placement->src_pix_y + placement->src_pix_height > image_pix_height)
++ placement->src_pix_height =
++ image_pix_height - placement->src_pix_y;
++
++ if (placement->cols != 0 && placement->rows != 0)
++ return;
++ if (placement->src_pix_width == 0 || placement->src_pix_height == 0)
++ return;
++ if (current_cw == 0 || current_ch == 0)
++ return;
++
++ // If no size is specified, use the image size.
++ if (placement->cols == 0 && placement->rows == 0) {
++ placement->cols =
++ ceil_div(placement->src_pix_width, current_cw);
++ placement->rows =
++ ceil_div(placement->src_pix_height, current_ch);
++ return;
++ }
++
++ // Some applications specify only one of the dimensions.
++ if (placement->scale_mode == SCALE_MODE_CONTAIN) {
++ // If we preserve aspect ratio and fit to width/height, the most
++ // logical thing is to find the minimum size of the
++ // non-specified dimension that allows the image to fit the
++ // specified dimension.
++ if (placement->cols == 0) {
++ placement->cols = ceil_div(
++ placement->src_pix_width * placement->rows *
++ current_ch,
++ placement->src_pix_height * current_cw);
++ return;
++ }
++ if (placement->rows == 0) {
++ placement->rows =
++ ceil_div(placement->src_pix_height *
++ placement->cols * current_cw,
++ placement->src_pix_width * current_ch);
++ return;
++ }
++ } else {
++ // Otherwise we stretch the image or preserve the original size.
++ // In both cases we compute the best number of columns from the
++ // pixel size and cell size.
++ // TODO: In the case of stretching it's not the most logical
++ // thing to do, may need to revisit in the future.
++ // Currently we switch to SCALE_MODE_CONTAIN when only one
++ // of the dimensions is specified, so this case shouldn't
++ // happen in practice.
++ if (!placement->cols)
++ placement->cols =
++ ceil_div(placement->src_pix_width, current_cw);
++ if (!placement->rows)
++ placement->rows =
++ ceil_div(placement->src_pix_height, current_ch);
++ }
++}
++
++/// Adjusts the current frame index if enough time has passed since the display
++/// of the current frame. Also computes the time of the next redraw of this
++/// image (`img->next_redraw`). The current time is passed as an argument so
++/// that all animations are in sync.
++static void gr_update_frame_index(Image *img, Milliseconds now) {
++ if (img->current_frame == 0) {
++ img->current_frame_time = now;
++ img->current_frame = 1;
++ img->next_redraw = now + MAX(1, img->first_frame.gap);
++ return;
++ }
++ // If the animation is stopped, show the current frame.
++ if (!img->animation_state ||
++ img->animation_state == ANIMATION_STATE_STOPPED ||
++ img->animation_state == ANIMATION_STATE_UNSET) {
++ // The next redraw is never (unless the state is changed).
++ img->next_redraw = 0;
++ return;
++ }
++ int last_uploaded_frame_index = gr_last_uploaded_frame_index(img);
++ // If we are loading and we reached the last frame, show the last frame.
++ if (img->animation_state == ANIMATION_STATE_LOADING &&
++ img->current_frame == last_uploaded_frame_index) {
++ // The next redraw is never (unless the state is changed or
++ // frames are added).
++ img->next_redraw = 0;
++ return;
++ }
++
++ // Check how many milliseconds passed since the current frame was shown.
++ int passed_ms = now - img->current_frame_time;
++ // If the animation is looping and too much time has passes, we can
++ // make a shortcut.
++ if (img->animation_state == ANIMATION_STATE_LOOPING &&
++ img->total_duration > 0 && passed_ms >= img->total_duration) {
++ passed_ms %= img->total_duration;
++ img->current_frame_time = now - passed_ms;
++ }
++ // Find the next frame.
++ int original_frame_index = img->current_frame;
++ while (1) {
++ ImageFrame *frame = gr_get_frame(img, img->current_frame);
++ if (!frame) {
++ // The frame doesn't exist, go to the first frame.
++ img->current_frame = 1;
++ img->current_frame_time = now;
++ img->next_redraw = now + MAX(1, img->first_frame.gap);
++ return;
++ }
++ if (frame->gap >= 0 && passed_ms < frame->gap) {
++ // Not enough time has passed, we are still in the same
++ // frame, and it's not a gapless frame.
++ img->next_redraw =
++ img->current_frame_time + MAX(1, frame->gap);
++ return;
++ }
++ // Otherwise go to the next frame.
++ passed_ms -= MAX(0, frame->gap);
++ if (img->current_frame >= last_uploaded_frame_index) {
++ // It's the last frame, if the animation is loading,
++ // remain on it.
++ if (img->animation_state == ANIMATION_STATE_LOADING) {
++ img->next_redraw = 0;
++ return;
++ }
++ // Otherwise the animation is looping.
++ img->current_frame = 1;
++ // TODO: Support finite number of loops.
++ } else {
++ img->current_frame++;
++ }
++ // Make sure we don't get stuck in an infinite loop.
++ if (img->current_frame == original_frame_index) {
++ // We looped through all frames, but haven't reached the
++ // next frame yet. This may happen if too much time has
++ // passed since the last redraw or all the frames are
++ // gapless. Just move on to the next frame.
++ img->current_frame++;
++ if (img->current_frame >
++ last_uploaded_frame_index)
++ img->current_frame = 1;
++ img->current_frame_time = now;
++ img->next_redraw = now + MAX(
++ 1, gr_get_frame(img, img->current_frame)->gap);
++ return;
++ }
++ // Adjust the start time of the frame. The next redraw time will
++ // be set in the next iteration.
++ img->current_frame_time += MAX(0, frame->gap);
++ }
++}
++
++////////////////////////////////////////////////////////////////////////////////
++// Unloading and deleting images to save resources.
++////////////////////////////////////////////////////////////////////////////////
++
++/// A helper to compare frames by atime for qsort.
++static int gr_cmp_frames_by_atime(const void *a, const void *b) {
++ ImageFrame *frame_a = *(ImageFrame *const *)a;
++ ImageFrame *frame_b = *(ImageFrame *const *)b;
++ if (frame_a->atime == frame_b->atime)
++ return frame_a->image->global_command_index -
++ frame_b->image->global_command_index;
++ return frame_a->atime - frame_b->atime;
++}
++
++/// A helper to compare images by atime for qsort.
++static int gr_cmp_images_by_atime(const void *a, const void *b) {
++ Image *img_a = *(Image *const *)a;
++ Image *img_b = *(Image *const *)b;
++ if (img_a->atime == img_b->atime)
++ return img_a->global_command_index -
++ img_b->global_command_index;
++ return img_a->atime - img_b->atime;
++}
++
++/// A helper to compare placements by atime for qsort.
++static int gr_cmp_placements_by_atime(const void *a, const void *b) {
++ ImagePlacement *p_a = *(ImagePlacement **)a;
++ ImagePlacement *p_b = *(ImagePlacement **)b;
++ if (p_a->atime == p_b->atime)
++ return p_a->image->global_command_index -
++ p_b->image->global_command_index;
++ return p_a->atime - p_b->atime;
++}
++
++typedef kvec_t(Image *) ImageVec;
++typedef kvec_t(ImagePlacement *) ImagePlacementVec;
++typedef kvec_t(ImageFrame *) ImageFrameVec;
++
++/// Returns an array of pointers to all images sorted by atime.
++static ImageVec gr_get_images_sorted_by_atime() {
++ ImageVec vec;
++ kv_init(vec);
++ if (kh_size(images) == 0)
++ return vec;
++ kv_resize(Image *, vec, kh_size(images));
++ Image *img = NULL;
++ kh_foreach_value(images, img, { kv_push(Image *, vec, img); });
++ qsort(vec.a, kv_size(vec), sizeof(Image *), gr_cmp_images_by_atime);
++ return vec;
++}
++
++/// Returns an array of pointers to all placements sorted by atime.
++static ImagePlacementVec gr_get_placements_sorted_by_atime() {
++ ImagePlacementVec vec;
++ kv_init(vec);
++ if (total_placement_count == 0)
++ return vec;
++ kv_resize(ImagePlacement *, vec, total_placement_count);
++ Image *img = NULL;
++ ImagePlacement *placement = NULL;
++ kh_foreach_value(images, img, {
++ kh_foreach_value(img->placements, placement, {
++ kv_push(ImagePlacement *, vec, placement);
++ });
++ });
++ qsort(vec.a, kv_size(vec), sizeof(ImagePlacement *),
++ gr_cmp_placements_by_atime);
++ return vec;
++}
++
++/// Returns an array of pointers to all frames sorted by atime.
++static ImageFrameVec gr_get_frames_sorted_by_atime() {
++ ImageFrameVec frames;
++ kv_init(frames);
++ Image *img = NULL;
++ kh_foreach_value(images, img, {
++ foreach_frame(*img, frame, {
++ kv_push(ImageFrame *, frames, frame);
++ });
++ });
++ qsort(frames.a, kv_size(frames), sizeof(ImageFrame *),
++ gr_cmp_frames_by_atime);
++ return frames;
++}
++
++/// An object that can be unloaded from RAM.
++typedef struct {
++ /// Some score, probably based on access time. The lower the score, the
++ /// more likely that the object should be unloaded.
++ int64_t score;
++ union {
++ ImagePlacement *placement;
++ ImageFrame *frame;
++ };
++ /// If zero, the object is the imlib object of `frame`, if non-zero,
++ /// the object is a pixmap of `frameidx`-th frame of `placement`.
++ int frameidx;
++} UnloadableObject;
++
++typedef kvec_t(UnloadableObject) UnloadableObjectVec;
++
++/// A helper to compare unloadable objects by score for qsort.
++static int gr_cmp_unloadable_objects(const void *a, const void *b) {
++ UnloadableObject *obj_a = (UnloadableObject *)a;
++ UnloadableObject *obj_b = (UnloadableObject *)b;
++ return obj_a->score - obj_b->score;
++}
++
++/// Unloads an unloadable object from RAM.
++static void gr_unload_object(UnloadableObject *obj) {
++ if (obj->frameidx) {
++ if (obj->placement->protected_frame == obj->frameidx)
++ return;
++ gr_unload_pixmap(obj->placement, obj->frameidx);
++ } else {
++ gr_unload_frame(obj->frame);
++ }
++}
++
++/// Returns the recency threshold for an image. Frames that were accessed within
++/// this threshold from now are considered recent and may be handled
++/// differently because we may need them again very soon.
++static Milliseconds gr_recency_threshold(Image *img) {
++ return img->total_duration * 2 + 1000;
++}
++
++/// Creates an unloadable object for the imlib object of a frame.
++static UnloadableObject gr_unloadable_object_for_frame(Milliseconds now,
++ ImageFrame *frame) {
++ UnloadableObject obj = {0};
++ obj.frameidx = 0;
++ obj.frame = frame;
++ Milliseconds atime = frame->atime;
++ obj.score = atime;
++ if (atime >= now - gr_recency_threshold(frame->image)) {
++ // This is a recent frame, probably from an active animation.
++ // Score it above `now` to prefer unloading non-active frames.
++ // Randomize the score because it's not very clear in which
++ // order we want to unload them: reloading a frame may require
++ // reloading other frames.
++ obj.score = now + 1000 + rand() % 1000;
++ }
++ return obj;
++}
++
++/// Creates an unloadable object for a pixmap.
++static UnloadableObject
++gr_unloadable_object_for_pixmap(Milliseconds now, ImageFrame *frame,
++ ImagePlacement *placement) {
++ UnloadableObject obj = {0};
++ obj.frameidx = frame->index;
++ obj.placement = placement;
++ obj.score = placement->atime;
++ // Since we don't store pixmap atimes, use the
++ // oldest atime of the frame and the placement.
++ Milliseconds atime = MIN(placement->atime, frame->atime);
++ obj.score = atime;
++ if (atime >= now - gr_recency_threshold(frame->image)) {
++ // This is a recent pixmap, probably from an active animation.
++ // Score it above `now` to prefer unloading non-active frames.
++ // Also assign higher scores to frames that are closer to the
++ // current frame (more likely to be used soon).
++ int num_frames = gr_last_frame_index(frame->image);
++ int dist = frame->index - frame->image->current_frame;
++ if (dist < 0)
++ dist += num_frames;
++ obj.score =
++ now + 1000 + (num_frames - dist) * 1000 / num_frames;
++ // If the pixmap is much larger than the imlib image, prefer to
++ // unload the pixmap by adding up to -1000 to the score. If the
++ // imlib image is larger, add up to +1000.
++ float imlib_size = gr_frame_current_ram_size(frame);
++ float pixmap_size =
++ gr_placement_single_frame_ram_size(placement);
++ obj.score +=
++ 2000 * (imlib_size / (imlib_size + pixmap_size) - 0.5);
++ }
++ return obj;
++}
++
++/// Returns an array of unloadable objects sorted by score.
++static UnloadableObjectVec
++gr_get_unloadable_objects_sorted_by_score(Milliseconds now) {
++ UnloadableObjectVec objects;
++ kv_init(objects);
++ Image *img = NULL;
++ ImagePlacement *placement = NULL;
++ kh_foreach_value(images, img, {
++ foreach_frame(*img, frame, {
++ if (!frame->imlib_object)
++ continue;
++ kv_push(UnloadableObject, objects,
++ gr_unloadable_object_for_frame(now, frame));
++ int frameidx = frame->index;
++ kh_foreach_value(img->placements, placement, {
++ if (!gr_get_frame_pixmap(placement, frameidx))
++ continue;
++ kv_push(UnloadableObject, objects,
++ gr_unloadable_object_for_pixmap(
++ now, frame, placement));
++ });
++ });
++ });
++ qsort(objects.a, kv_size(objects), sizeof(UnloadableObject),
++ gr_cmp_unloadable_objects);
++ return objects;
++}
++
++/// Returns the limit adjusted by the excess tolerance ratio.
++static inline unsigned apply_tolerance(unsigned limit) {
++ return limit + (unsigned)(limit * graphics_excess_tolerance_ratio);
++}
++
++/// Checks RAM and disk cache limits and deletes/unloads some images.
++static void gr_check_limits() {
++ Milliseconds now = gr_now_ms();
++ ImageVec images_sorted = {0};
++ ImagePlacementVec placements_sorted = {0};
++ ImageFrameVec frames_sorted = {0};
++ UnloadableObjectVec objects_sorted = {0};
++ int images_begin = 0;
++ int placements_begin = 0;
++ char changed = 0;
++ // First reduce the number of images if there are too many.
++ if (kh_size(images) > apply_tolerance(graphics_max_total_placements)) {
++ GR_LOG("Too many images: %d\n", kh_size(images));
++ changed = 1;
++ images_sorted = gr_get_images_sorted_by_atime();
++ int to_delete = kv_size(images_sorted) -
++ graphics_max_total_placements;
++ for (; images_begin < to_delete; images_begin++)
++ gr_delete_image(images_sorted.a[images_begin]);
++ }
++ // Then reduce the number of placements if there are too many.
++ if (total_placement_count >
++ apply_tolerance(graphics_max_total_placements)) {
++ GR_LOG("Too many placements: %d\n", total_placement_count);
++ changed = 1;
++ placements_sorted = gr_get_placements_sorted_by_atime();
++ int to_delete = kv_size(placements_sorted) -
++ graphics_max_total_placements;
++ for (; placements_begin < to_delete; placements_begin++) {
++ ImagePlacement *placement =
++ placements_sorted.a[placements_begin];
++ if (placement->protected_frame)
++ break;
++ gr_delete_placement(placement);
++ }
++ }
++ // Then reduce the size of the image file cache. The files correspond to
++ // image frames.
++ if (images_disk_size >
++ apply_tolerance(graphics_total_file_cache_size)) {
++ GR_LOG("Too big disk cache: %ld KiB\n",
++ images_disk_size / 1024);
++ changed = 1;
++ frames_sorted = gr_get_frames_sorted_by_atime();
++ for (int i = 0; i < kv_size(frames_sorted); i++) {
++ if (images_disk_size <= graphics_total_file_cache_size)
++ break;
++ gr_delete_imagefile(kv_A(frames_sorted, i));
++ }
++ }
++ // Then unload images from RAM.
++ if (images_ram_size > apply_tolerance(graphics_max_total_ram_size)) {
++ changed = 1;
++ int frames_begin = 0;
++ GR_LOG("Too much ram: %ld KiB\n", images_ram_size / 1024);
++ objects_sorted = gr_get_unloadable_objects_sorted_by_score(now);
++ for (int i = 0; i < kv_size(objects_sorted); i++) {
++ if (images_ram_size <= graphics_max_total_ram_size)
++ break;
++ gr_unload_object(&kv_A(objects_sorted, i));
++ }
++ }
++ if (changed) {
++ GR_LOG("After cleaning: ram: %ld KiB disk: %ld KiB "
++ "img count: %d placement count: %d\n",
++ images_ram_size / 1024, images_disk_size / 1024,
++ kh_size(images), total_placement_count);
++ }
++ kv_destroy(images_sorted);
++ kv_destroy(placements_sorted);
++ kv_destroy(frames_sorted);
++ kv_destroy(objects_sorted);
++}
++
++/// Unloads all images by user request.
++void gr_unload_images_to_reduce_ram() {
++ Image *img = NULL;
++ ImagePlacement *placement = NULL;
++ kh_foreach_value(images, img, {
++ kh_foreach_value(img->placements, placement, {
++ if (placement->protected_frame)
++ continue;
++ gr_unload_placement(placement);
++ });
++ gr_unload_all_frames(img);
++ });
++}
++
++////////////////////////////////////////////////////////////////////////////////
++// Image loading.
++////////////////////////////////////////////////////////////////////////////////
++
++/// Copies `num_pixels` pixels (not bytes!) from a buffer `from` to an imlib2
++/// image data `to`. The format may be 24 (RGB) or 32 (RGBA), and it's converted
++/// to imlib2's representation, which is 0xAARRGGBB (having BGRA memory layout
++/// on little-endian architectures).
++static inline void gr_copy_pixels(DATA32 *to, unsigned char *from, int format,
++ size_t num_pixels) {
++ size_t pixel_size = format == 24 ? 3 : 4;
++ if (format == 32) {
++ for (unsigned i = 0; i < num_pixels; ++i) {
++ unsigned byte_i = i * pixel_size;
++ to[i] = ((DATA32)from[byte_i + 2]) |
++ ((DATA32)from[byte_i + 1]) << 8 |
++ ((DATA32)from[byte_i]) << 16 |
++ ((DATA32)from[byte_i + 3]) << 24;
++ }
++ } else {
++ for (unsigned i = 0; i < num_pixels; ++i) {
++ unsigned byte_i = i * pixel_size;
++ to[i] = ((DATA32)from[byte_i + 2]) |
++ ((DATA32)from[byte_i + 1]) << 8 |
++ ((DATA32)from[byte_i]) << 16 | 0xFF000000;
++ }
++ }
++}
++
++/// Loads uncompressed RGB or RGBA image data from a file.
++static void gr_load_raw_pixel_data_uncompressed(DATA32 *data, FILE *file,
++ int format,
++ size_t total_pixels) {
++ unsigned char chunk[BUFSIZ];
++ size_t pixel_size = format == 24 ? 3 : 4;
++ size_t chunk_size_pix = BUFSIZ / 4;
++ size_t chunk_size_bytes = chunk_size_pix * pixel_size;
++ size_t bytes = total_pixels * pixel_size;
++ for (size_t chunk_start_pix = 0; chunk_start_pix < total_pixels;
++ chunk_start_pix += chunk_size_pix) {
++ size_t read_size = fread(chunk, 1, chunk_size_bytes, file);
++ size_t read_pixels = read_size / pixel_size;
++ if (chunk_start_pix + read_pixels > total_pixels)
++ read_pixels = total_pixels - chunk_start_pix;
++ gr_copy_pixels(data + chunk_start_pix, chunk, format,
++ read_pixels);
++ }
++}
++
++#define COMPRESSED_CHUNK_SIZE BUFSIZ
++#define DECOMPRESSED_CHUNK_SIZE (BUFSIZ * 4)
++
++/// Loads compressed RGB or RGBA image data from a file.
++static int gr_load_raw_pixel_data_compressed(DATA32 *data, FILE *file,
++ int format, size_t total_pixels) {
++ size_t pixel_size = format == 24 ? 3 : 4;
++ unsigned char compressed_chunk[COMPRESSED_CHUNK_SIZE];
++ unsigned char decompressed_chunk[DECOMPRESSED_CHUNK_SIZE];
++
++ z_stream strm;
++ strm.zalloc = Z_NULL;
++ strm.zfree = Z_NULL;
++ strm.opaque = Z_NULL;
++ strm.next_out = decompressed_chunk;
++ strm.avail_out = DECOMPRESSED_CHUNK_SIZE;
++ strm.avail_in = 0;
++ strm.next_in = Z_NULL;
++ int ret = inflateInit(&strm);
++ if (ret != Z_OK)
++ return 1;
++
++ int error = 0;
++ int progress = 0;
++ size_t total_copied_pixels = 0;
++ while (1) {
++ // If we don't have enough data in the input buffer, try to read
++ // from the file.
++ if (strm.avail_in <= COMPRESSED_CHUNK_SIZE / 4) {
++ // Move the existing data to the beginning.
++ memmove(compressed_chunk, strm.next_in, strm.avail_in);
++ strm.next_in = compressed_chunk;
++ // Read more data.
++ size_t bytes_read = fread(
++ compressed_chunk + strm.avail_in, 1,
++ COMPRESSED_CHUNK_SIZE - strm.avail_in, file);
++ strm.avail_in += bytes_read;
++ if (bytes_read != 0)
++ progress = 1;
++ }
++
++ // Try to inflate the data.
++ int ret = inflate(&strm, Z_SYNC_FLUSH);
++ if (ret == Z_MEM_ERROR || ret == Z_DATA_ERROR) {
++ error = 1;
++ fprintf(stderr,
++ "error: could not decompress the image, error "
++ "%s\n",
++ ret == Z_MEM_ERROR ? "Z_MEM_ERROR"
++ : "Z_DATA_ERROR");
++ break;
++ }
++
++ // Copy the data from the output buffer to the image.
++ size_t full_pixels =
++ (DECOMPRESSED_CHUNK_SIZE - strm.avail_out) / pixel_size;
++ // Make sure we don't overflow the image.
++ if (full_pixels > total_pixels - total_copied_pixels)
++ full_pixels = total_pixels - total_copied_pixels;
++ if (full_pixels > 0) {
++ // Copy pixels.
++ gr_copy_pixels(data, decompressed_chunk, format,
++ full_pixels);
++ data += full_pixels;
++ total_copied_pixels += full_pixels;
++ if (total_copied_pixels >= total_pixels) {
++ // We filled the whole image, there may be some
++ // data left, but we just truncate it.
++ break;
++ }
++ // Move the remaining data to the beginning.
++ size_t copied_bytes = full_pixels * pixel_size;
++ size_t leftover =
++ (DECOMPRESSED_CHUNK_SIZE - strm.avail_out) -
++ copied_bytes;
++ memmove(decompressed_chunk,
++ decompressed_chunk + copied_bytes, leftover);
++ strm.next_out -= copied_bytes;
++ strm.avail_out += copied_bytes;
++ progress = 1;
++ }
++
++ // If we haven't made any progress, then we have reached the end
++ // of both the file and the inflated data.
++ if (!progress)
++ break;
++ progress = 0;
++ }
++
++ inflateEnd(&strm);
++ return error;
++}
++
++#undef COMPRESSED_CHUNK_SIZE
++#undef DECOMPRESSED_CHUNK_SIZE
++
++/// Load the image from a file containing raw pixel data (RGB or RGBA), the data
++/// may be compressed.
++static Imlib_Image gr_load_raw_pixel_data(ImageFrame *frame,
++ const char *filename) {
++ size_t total_pixels = frame->data_pix_width * frame->data_pix_height;
++ if (total_pixels * 4 > graphics_max_single_image_ram_size) {
++ fprintf(stderr,
++ "error: image %u frame %u is too big too load: %zu > %u\n",
++ frame->image->image_id, frame->index, total_pixels * 4,
++ graphics_max_single_image_ram_size);
++ return NULL;
++ }
++
++ FILE* file = fopen(filename, "rb");
++ if (!file) {
++ fprintf(stderr,
++ "error: could not open image file: %s\n",
++ sanitized_filename(filename));
++ return NULL;
++ }
++
++ Imlib_Image image = imlib_create_image(frame->data_pix_width,
++ frame->data_pix_height);
++ if (!image) {
++ fprintf(stderr,
++ "error: could not create an image of size %d x %d\n",
++ frame->data_pix_width, frame->data_pix_height);
++ fclose(file);
++ return NULL;
++ }
++
++ imlib_context_set_image(image);
++ imlib_image_set_has_alpha(1);
++ DATA32* data = imlib_image_get_data();
++
++ // The default format is 32.
++ int format = frame->format ? frame->format : 32;
++
++ if (frame->compression == 0) {
++ gr_load_raw_pixel_data_uncompressed(data, file, format,
++ total_pixels);
++ } else {
++ int ret = gr_load_raw_pixel_data_compressed(data, file, format,
++ total_pixels);
++ if (ret != 0) {
++ imlib_image_put_back_data(data);
++ imlib_free_image();
++ fclose(file);
++ return NULL;
++ }
++ }
++
++ fclose(file);
++ imlib_image_put_back_data(data);
++ return image;
++}
++
++/// Loads the unscaled frame into RAM as an imlib object. The frame imlib object
++/// is fully composed on top of the background frame. If the frame is already
++/// loaded, does nothing. Loading may fail, in which case the status of the
++/// frame will be set to STATUS_RAM_LOADING_ERROR.
++static void gr_load_imlib_object(ImageFrame *frame) {
++ if (frame->imlib_object)
++ return;
++
++ // If the image is uninitialized or uploading has failed, or the file
++ // has been deleted, we cannot load the image.
++ if (frame->status < STATUS_UPLOADING_SUCCESS)
++ return;
++ if (frame->disk_size == 0) {
++ if (frame->status != STATUS_RAM_LOADING_ERROR) {
++ fprintf(stderr,
++ "error: cached image was deleted: %u frame %u\n",
++ frame->image->image_id, frame->index);
++ }
++ frame->status = STATUS_RAM_LOADING_ERROR;
++ return;
++ }
++
++ // Prevent recursive dependences between frames.
++ if (frame->status == STATUS_RAM_LOADING_IN_PROGRESS) {
++ fprintf(stderr,
++ "error: recursive loading of image %u frame %u\n",
++ frame->image->image_id, frame->index);
++ frame->status = STATUS_RAM_LOADING_ERROR;
++ return;
++ }
++ frame->status = STATUS_RAM_LOADING_IN_PROGRESS;
++
++ // Load the background frame if needed. Hopefully it's not recursive.
++ ImageFrame *bg_frame = NULL;
++ if (frame->background_frame_index) {
++ bg_frame = gr_get_frame(frame->image,
++ frame->background_frame_index);
++ if (!bg_frame) {
++ fprintf(stderr,
++ "error: could not find background "
++ "frame %d for image %u frame %d\n",
++ frame->background_frame_index,
++ frame->image->image_id, frame->index);
++ frame->status = STATUS_RAM_LOADING_ERROR;
++ return;
++ }
++ gr_load_imlib_object(bg_frame);
++ if (!bg_frame->imlib_object) {
++ fprintf(stderr,
++ "error: could not load background frame %d for "
++ "image %u frame %d\n",
++ frame->background_frame_index,
++ frame->image->image_id, frame->index);
++ frame->status = STATUS_RAM_LOADING_ERROR;
++ return;
++ }
++ }
++
++ // Load the frame data image.
++ Imlib_Image frame_data_image = NULL;
++ char filename[MAX_FILENAME_SIZE];
++ gr_get_frame_filename(frame, filename, MAX_FILENAME_SIZE);
++ GR_LOG("Loading image: %s\n", sanitized_filename(filename));
++ if (frame->format == 100 || frame->format == 0)
++ frame_data_image = imlib_load_image(filename);
++ if (frame->format == 32 || frame->format == 24 ||
++ (!frame_data_image && frame->format == 0))
++ frame_data_image = gr_load_raw_pixel_data(frame, filename);
++ this_redraw_cycle_loaded_files++;
++
++ if (!frame_data_image) {
++ if (frame->status != STATUS_RAM_LOADING_ERROR) {
++ fprintf(stderr, "error: could not load image: %s\n",
++ sanitized_filename(filename));
++ }
++ frame->status = STATUS_RAM_LOADING_ERROR;
++ return;
++ }
++
++ imlib_context_set_image(frame_data_image);
++ int frame_data_width = imlib_image_get_width();
++ int frame_data_height = imlib_image_get_height();
++ GR_LOG("Successfully loaded, size %d x %d\n", frame_data_width,
++ frame_data_height);
++ // If imlib loading succeeded, and it is the first frame, set the
++ // information about the original image size, unless it's already set.
++ if (frame->index == 1 && frame->image->pix_width == 0 &&
++ frame->image->pix_height == 0) {
++ frame->image->pix_width = frame_data_width;
++ frame->image->pix_height = frame_data_height;
++ }
++
++ int image_width = frame->image->pix_width;
++ int image_height = frame->image->pix_height;
++
++ // Compose the image with the background color or frame.
++ if (frame->background_color != 0 || bg_frame ||
++ image_width != frame_data_width ||
++ image_height != frame_data_height) {
++ GR_LOG("Composing the frame bg = 0x%08X, bgframe = %d\n",
++ frame->background_color, frame->background_frame_index);
++ Imlib_Image composed_image = imlib_create_image(
++ image_width, image_height);
++ imlib_context_set_image(composed_image);
++ imlib_image_set_has_alpha(1);
++ imlib_context_set_anti_alias(0);
++
++ // Start with the background frame or color.
++ imlib_context_set_blend(0);
++ if (bg_frame && bg_frame->imlib_object) {
++ imlib_blend_image_onto_image(
++ bg_frame->imlib_object, 1, 0, 0,
++ image_width, image_height, 0, 0,
++ image_width, image_height);
++ } else {
++ int r = (frame->background_color >> 24) & 0xFF;
++ int g = (frame->background_color >> 16) & 0xFF;
++ int b = (frame->background_color >> 8) & 0xFF;
++ int a = frame->background_color & 0xFF;
++ imlib_context_set_color(r, g, b, a);
++ imlib_image_fill_rectangle(0, 0, image_width,
++ image_height);
++ }
++
++ // Blend the frame data image onto the background.
++ imlib_context_set_blend(1);
++ imlib_blend_image_onto_image(
++ frame_data_image, 1, 0, 0, frame->data_pix_width,
++ frame->data_pix_height, frame->x, frame->y,
++ frame->data_pix_width, frame->data_pix_height);
++
++ // Free the frame data image.
++ imlib_context_set_image(frame_data_image);
++ imlib_free_image();
++
++ frame_data_image = composed_image;
++ }
++
++ frame->imlib_object = frame_data_image;
++
++ images_ram_size += gr_frame_current_ram_size(frame);
++ frame->status = STATUS_RAM_LOADING_SUCCESS;
++
++ GR_LOG("After loading image %u frame %d ram: %ld KiB (+ %u KiB)\n",
++ frame->image->image_id, frame->index,
++ images_ram_size / 1024, gr_frame_current_ram_size(frame) / 1024);
++}
++
++/// Premultiplies the alpha channel of the image data. The data is an array of
++/// pixels such that each pixel is a 32-bit integer in the format 0xAARRGGBB.
++static void gr_premultiply_alpha(DATA32 *data, size_t num_pixels) {
++ for (size_t i = 0; i < num_pixels; ++i) {
++ DATA32 pixel = data[i];
++ unsigned char a = pixel >> 24;
++ if (a == 0) {
++ data[i] = 0;
++ } else if (a != 255) {
++ unsigned char b = (pixel & 0xFF) * a / 255;
++ unsigned char g = ((pixel >> 8) & 0xFF) * a / 255;
++ unsigned char r = ((pixel >> 16) & 0xFF) * a / 255;
++ data[i] = (a << 24) | (r << 16) | (g << 8) | b;
++ }
++ }
++}
++
++/// Creates a pixmap for the frame of an image placement. The pixmap contain the
++/// image data correctly scaled and fit to the box defined by the number of
++/// rows/columns of the image placement and the provided cell dimensions in
++/// pixels. If the placement is already loaded, it will be reloaded only if the
++/// cell dimensions have changed.
++Pixmap gr_load_pixmap(ImagePlacement *placement, int frameidx, int cw, int ch) {
++ Image *img = placement->image;
++ ImageFrame *frame = gr_get_frame(img, frameidx);
++
++ // Update the atime uncoditionally.
++ gr_touch_placement(placement);
++ if (frame)
++ gr_touch_frame(frame);
++
++ // If cw or ch are different, unload all the pixmaps.
++ if (placement->scaled_cw != cw || placement->scaled_ch != ch) {
++ gr_unload_placement(placement);
++ placement->scaled_cw = cw;
++ placement->scaled_ch = ch;
++ }
++
++ // If it's already loaded, do nothing.
++ Pixmap pixmap = gr_get_frame_pixmap(placement, frameidx);
++ if (pixmap)
++ return pixmap;
++
++ GR_LOG("Loading placement: %u/%u frame %u\n", img->image_id,
++ placement->placement_id, frameidx);
++
++ // Load the imlib object for the frame.
++ if (!frame) {
++ fprintf(stderr,
++ "error: could not find frame %u for image %u\n",
++ frameidx, img->image_id);
++ return 0;
++ }
++ gr_load_imlib_object(frame);
++ if (!frame->imlib_object)
++ return 0;
++
++ // Infer the placement size if needed.
++ gr_infer_placement_size_maybe(placement);
++
++ // Create the scaled image. This is temporary, we will scale it
++ // appropriately, upload to the X server, and then delete immediately.
++ int scaled_w = (int)placement->cols * cw;
++ int scaled_h = (int)placement->rows * ch;
++ if (scaled_w * scaled_h * 4 > graphics_max_single_image_ram_size) {
++ fprintf(stderr,
++ "error: placement %u/%u would be too big to load: %d x "
++ "%d x 4 > %u\n",
++ img->image_id, placement->placement_id, scaled_w,
++ scaled_h, graphics_max_single_image_ram_size);
++ return 0;
++ }
++ Imlib_Image scaled_image = imlib_create_image(scaled_w, scaled_h);
++ if (!scaled_image) {
++ fprintf(stderr,
++ "error: imlib_create_image(%d, %d) returned "
++ "null\n",
++ scaled_w, scaled_h);
++ return 0;
++ }
++ imlib_context_set_image(scaled_image);
++ imlib_image_set_has_alpha(1);
++
++ // First fill the scaled image with the transparent color.
++ imlib_context_set_blend(0);
++ imlib_context_set_color(0, 0, 0, 0);
++ imlib_image_fill_rectangle(0, 0, scaled_w, scaled_h);
++ imlib_context_set_anti_alias(1);
++ imlib_context_set_blend(1);
++
++ // The source rectangle.
++ int src_x = placement->src_pix_x;
++ int src_y = placement->src_pix_y;
++ int src_w = placement->src_pix_width;
++ int src_h = placement->src_pix_height;
++ // Whether the box is too small to use the true size of the image.
++ char box_too_small = scaled_w < src_w || scaled_h < src_h;
++ char mode = placement->scale_mode;
++
++ // Then blend the original image onto the transparent background.
++ if (src_w <= 0 || src_h <= 0) {
++ fprintf(stderr, "warning: image of zero size\n");
++ } else if (mode == SCALE_MODE_FILL) {
++ imlib_blend_image_onto_image(frame->imlib_object, 1, src_x,
++ src_y, src_w, src_h, 0, 0,
++ scaled_w, scaled_h);
++ } else if (mode == SCALE_MODE_NONE ||
++ (mode == SCALE_MODE_NONE_OR_CONTAIN && !box_too_small)) {
++ imlib_blend_image_onto_image(frame->imlib_object, 1, src_x,
++ src_y, src_w, src_h, 0, 0, src_w,
++ src_h);
++ } else {
++ if (mode != SCALE_MODE_CONTAIN &&
++ mode != SCALE_MODE_NONE_OR_CONTAIN) {
++ fprintf(stderr,
++ "warning: unknown scale mode %u, using "
++ "'contain' instead\n",
++ mode);
++ }
++ int dest_x, dest_y;
++ int dest_w, dest_h;
++ if (scaled_w * src_h > src_w * scaled_h) {
++ // If the box is wider than the original image, fit to
++ // height.
++ dest_h = scaled_h;
++ dest_y = 0;
++ dest_w = src_w * scaled_h / src_h;
++ dest_x = (scaled_w - dest_w) / 2;
++ } else {
++ // Otherwise, fit to width.
++ dest_w = scaled_w;
++ dest_x = 0;
++ dest_h = src_h * scaled_w / src_w;
++ dest_y = (scaled_h - dest_h) / 2;
++ }
++ imlib_blend_image_onto_image(frame->imlib_object, 1, src_x,
++ src_y, src_w, src_h, dest_x,
++ dest_y, dest_w, dest_h);
++ }
++
++ // XRender needs the alpha channel premultiplied.
++ DATA32 *data = imlib_image_get_data();
++ gr_premultiply_alpha(data, scaled_w * scaled_h);
++
++ // Upload the image to the X server.
++ Display *disp = imlib_context_get_display();
++ Visual *vis = imlib_context_get_visual();
++ Colormap cmap = imlib_context_get_colormap();
++ Drawable drawable = imlib_context_get_drawable();
++ if (!drawable)
++ drawable = DefaultRootWindow(disp);
++ pixmap = XCreatePixmap(disp, drawable, scaled_w, scaled_h, 32);
++ XVisualInfo visinfo;
++ XMatchVisualInfo(disp, DefaultScreen(disp), 32, TrueColor, &visinfo);
++ XImage *ximage = XCreateImage(disp, visinfo.visual, 32, ZPixmap, 0,
++ (char *)data, scaled_w, scaled_h, 32, 0);
++ GC gc = XCreateGC(disp, pixmap, 0, NULL);
++ XPutImage(disp, pixmap, gc, ximage, 0, 0, 0, 0, scaled_w,
++ scaled_h);
++ XFreeGC(disp, gc);
++ // XDestroyImage will free the data as well, but it is managed by imlib,
++ // so set it to NULL.
++ ximage->data = NULL;
++ XDestroyImage(ximage);
++ imlib_image_put_back_data(data);
++ imlib_free_image();
++
++ // Assign the pixmap to the frame and increase the ram size.
++ gr_set_frame_pixmap(placement, frameidx, pixmap);
++ images_ram_size += gr_placement_single_frame_ram_size(placement);
++ this_redraw_cycle_loaded_pixmaps++;
++
++ GR_LOG("After loading placement %u/%u frame %d ram: %ld KiB (+ %u "
++ "KiB)\n",
++ frame->image->image_id, placement->placement_id, frame->index,
++ images_ram_size / 1024,
++ gr_placement_single_frame_ram_size(placement) / 1024);
++
++ // Free up ram if needed, but keep the pixmap we've loaded no matter
++ // what.
++ placement->protected_frame = frameidx;
++ gr_check_limits();
++ placement->protected_frame = 0;
++
++ return pixmap;
++}
++
++////////////////////////////////////////////////////////////////////////////////
++// Initialization and deinitialization.
++////////////////////////////////////////////////////////////////////////////////
++
++/// Creates a temporary directory.
++static int gr_create_cache_dir() {
++ strncpy(cache_dir, graphics_cache_dir_template, sizeof(cache_dir));
++ if (!mkdtemp(cache_dir)) {
++ fprintf(stderr,
++ "error: could not create temporary dir from template "
++ "%s\n",
++ sanitized_filename(cache_dir));
++ return 0;
++ }
++ fprintf(stderr, "Graphics cache directory: %s\n", cache_dir);
++ return 1;
++}
++
++/// Checks whether `tmp_dir` exists and recreates it if it doesn't.
++static void gr_make_sure_tmpdir_exists() {
++ struct stat st;
++ if (stat(cache_dir, &st) == 0 && S_ISDIR(st.st_mode))
++ return;
++ fprintf(stderr,
++ "error: %s is not a directory, will need to create a new "
++ "graphics cache directory\n",
++ sanitized_filename(cache_dir));
++ gr_create_cache_dir();
++}
++
++/// Initialize the graphics module.
++void gr_init(Display *disp, Visual *vis, Colormap cm) {
++ // Set the initialization time.
++ clock_gettime(CLOCK_MONOTONIC, &initialization_time);
++
++ // Create the temporary dir.
++ if (!gr_create_cache_dir())
++ abort();
++
++ // Initialize imlib.
++ imlib_context_set_display(disp);
++ imlib_context_set_visual(vis);
++ imlib_context_set_colormap(cm);
++ imlib_context_set_anti_alias(1);
++ imlib_context_set_blend(1);
++ // Imlib2 checks only the file name when caching, which is not enough
++ // for us since we reuse file names. Disable caching.
++ imlib_set_cache_size(0);
++
++ // Prepare for color inversion.
++ for (size_t i = 0; i < 256; ++i)
++ reverse_table[i] = 255 - i;
++
++ // Create data structures.
++ images = kh_init(id2image);
++ kv_init(next_redraw_times);
++
++ atexit(gr_deinit);
++}
++
++/// Deinitialize the graphics module.
++void gr_deinit() {
++ // Remove the cache dir.
++ remove(cache_dir);
++ kv_destroy(next_redraw_times);
++ if (images) {
++ // Delete all images.
++ gr_delete_all_images();
++ // Destroy the data structures.
++ kh_destroy(id2image, images);
++ images = NULL;
++ }
++}
++
++////////////////////////////////////////////////////////////////////////////////
++// Dumping, debugging, and image preview.
++////////////////////////////////////////////////////////////////////////////////
++
++/// Returns a string containing a time difference in a human-readable format.
++/// Uses a static buffer, so be careful.
++static const char *gr_ago(Milliseconds diff) {
++ static char result[32];
++ double seconds = (double)diff / 1000.0;
++ if (seconds < 1)
++ snprintf(result, sizeof(result), "%.2f sec ago", seconds);
++ else if (seconds < 60)
++ snprintf(result, sizeof(result), "%d sec ago", (int)seconds);
++ else if (seconds < 3600)
++ snprintf(result, sizeof(result), "%d min %d sec ago",
++ (int)(seconds / 60), (int)(seconds) % 60);
++ else {
++ snprintf(result, sizeof(result), "%d hr %d min %d sec ago",
++ (int)(seconds / 3600), (int)(seconds) % 3600 / 60,
++ (int)(seconds) % 60);
++ }
++ return result;
++}
++
++/// Prints to `file` with an indentation of `ind` spaces.
++static void fprintf_ind(FILE *file, int ind, const char *format, ...) {
++ fprintf(file, "%*s", ind, "");
++ va_list args;
++ va_start(args, format);
++ vfprintf(file, format, args);
++ va_end(args);
++}
++
++/// Dumps the image info to `file` with an indentation of `ind` spaces.
++static void gr_dump_image_info(FILE *file, Image *img, int ind) {
++ if (!img) {
++ fprintf_ind(file, ind, "Image is NULL\n");
++ return;
++ }
++ Milliseconds now = gr_now_ms();
++ fprintf_ind(file, ind, "Image %u\n", img->image_id);
++ ind += 4;
++ fprintf_ind(file, ind, "number: %u\n", img->image_number);
++ fprintf_ind(file, ind, "global command index: %lu\n",
++ img->global_command_index);
++ fprintf_ind(file, ind, "accessed: %ld %s\n", img->atime,
++ gr_ago(now - img->atime));
++ fprintf_ind(file, ind, "pix size: %ux%u\n", img->pix_width,
++ img->pix_height);
++ fprintf_ind(file, ind, "cur frame start time: %ld %s\n",
++ img->current_frame_time,
++ gr_ago(now - img->current_frame_time));
++ if (img->next_redraw)
++ fprintf_ind(file, ind, "next redraw: %ld in %ld ms\n",
++ img->next_redraw, img->next_redraw - now);
++ fprintf_ind(file, ind, "total disk size: %u KiB\n",
++ img->total_disk_size / 1024);
++ fprintf_ind(file, ind, "total duration: %d\n", img->total_duration);
++ fprintf_ind(file, ind, "frames: %d\n", gr_last_frame_index(img));
++ fprintf_ind(file, ind, "cur frame: %d\n", img->current_frame);
++ fprintf_ind(file, ind, "animation state: %d\n", img->animation_state);
++ fprintf_ind(file, ind, "default_placement: %u\n",
++ img->default_placement);
++}
++
++/// Dumps the frame info to `file` with an indentation of `ind` spaces.
++static void gr_dump_frame_info(FILE *file, ImageFrame *frame, int ind) {
++ if (!frame) {
++ fprintf_ind(file, ind, "Frame is NULL\n");
++ return;
++ }
++ Milliseconds now = gr_now_ms();
++ fprintf_ind(file, ind, "Frame %d\n", frame->index);
++ ind += 4;
++ if (frame->index == 0) {
++ fprintf_ind(file, ind, "NOT INITIALIZED\n");
++ return;
++ }
++ if (frame->uploading_failure)
++ fprintf_ind(file, ind, "uploading failure: %s\n",
++ image_uploading_failure_strings
++ [frame->uploading_failure]);
++ fprintf_ind(file, ind, "gap: %d\n", frame->gap);
++ fprintf_ind(file, ind, "accessed: %ld %s\n", frame->atime,
++ gr_ago(now - frame->atime));
++ fprintf_ind(file, ind, "data pix size: %ux%u\n", frame->data_pix_width,
++ frame->data_pix_height);
++ char filename[MAX_FILENAME_SIZE];
++ gr_get_frame_filename(frame, filename, MAX_FILENAME_SIZE);
++ if (access(filename, F_OK) != -1)
++ fprintf_ind(file, ind, "file: %s\n",
++ sanitized_filename(filename));
++ else
++ fprintf_ind(file, ind, "not on disk\n");
++ fprintf_ind(file, ind, "disk size: %u KiB\n", frame->disk_size / 1024);
++ if (frame->imlib_object) {
++ unsigned ram_size = gr_frame_current_ram_size(frame);
++ fprintf_ind(file, ind,
++ "loaded into ram, size: %d "
++ "KiB\n",
++ ram_size / 1024);
++ } else {
++ fprintf_ind(file, ind, "not loaded into ram\n");
++ }
++}
++
++/// Dumps the placement info to `file` with an indentation of `ind` spaces.
++static void gr_dump_placement_info(FILE *file, ImagePlacement *placement,
++ int ind) {
++ if (!placement) {
++ fprintf_ind(file, ind, "Placement is NULL\n");
++ return;
++ }
++ Milliseconds now = gr_now_ms();
++ fprintf_ind(file, ind, "Placement %u\n", placement->placement_id);
++ ind += 4;
++ fprintf_ind(file, ind, "accessed: %ld %s\n", placement->atime,
++ gr_ago(now - placement->atime));
++ fprintf_ind(file, ind, "scale_mode: %u\n", placement->scale_mode);
++ fprintf_ind(file, ind, "size: %u cols x %u rows\n", placement->cols,
++ placement->rows);
++ fprintf_ind(file, ind, "cell size: %ux%u\n", placement->scaled_cw,
++ placement->scaled_ch);
++ fprintf_ind(file, ind, "ram per frame: %u KiB\n",
++ gr_placement_single_frame_ram_size(placement) / 1024);
++ unsigned ram_size = gr_placement_current_ram_size(placement);
++ fprintf_ind(file, ind, "ram size: %d KiB\n", ram_size / 1024);
++}
++
++/// Dumps placement pixmaps to `file` with an indentation of `ind` spaces.
++static void gr_dump_placement_pixmaps(FILE *file, ImagePlacement *placement,
++ int ind) {
++ if (!placement)
++ return;
++ int frameidx = 1;
++ foreach_pixmap(*placement, pixmap, {
++ fprintf_ind(file, ind, "Frame %d pixmap %lu\n", frameidx,
++ pixmap);
++ ++frameidx;
++ });
++}
++
++/// Dumps the internal state (images and placements) to stderr.
++void gr_dump_state() {
++ FILE *file = stderr;
++ int ind = 0;
++ fprintf_ind(file, ind, "======= Graphics module state dump =======\n");
++ fprintf_ind(file, ind,
++ "sizeof(Image) = %lu sizeof(ImageFrame) = %lu "
++ "sizeof(ImagePlacement) = %lu\n",
++ sizeof(Image), sizeof(ImageFrame), sizeof(ImagePlacement));
++ fprintf_ind(file, ind, "Image count: %u\n", kh_size(images));
++ fprintf_ind(file, ind, "Placement count: %u\n", total_placement_count);
++ fprintf_ind(file, ind, "Estimated RAM usage: %ld KiB\n",
++ images_ram_size / 1024);
++ fprintf_ind(file, ind, "Estimated Disk usage: %ld KiB\n",
++ images_disk_size / 1024);
++
++ Milliseconds now = gr_now_ms();
++
++ int64_t images_ram_size_computed = 0;
++ int64_t images_disk_size_computed = 0;
++
++ Image *img = NULL;
++ ImagePlacement *placement = NULL;
++ kh_foreach_value(images, img, {
++ fprintf_ind(file, ind, "----------------\n");
++ gr_dump_image_info(file, img, 0);
++ int64_t total_disk_size_computed = 0;
++ int total_duration_computed = 0;
++ foreach_frame(*img, frame, {
++ gr_dump_frame_info(file, frame, 4);
++ if (frame->image != img)
++ fprintf_ind(file, 8,
++ "ERROR: WRONG IMAGE POINTER\n");
++ total_duration_computed += frame->gap;
++ images_disk_size_computed += frame->disk_size;
++ total_disk_size_computed += frame->disk_size;
++ if (frame->imlib_object)
++ images_ram_size_computed +=
++ gr_frame_current_ram_size(frame);
++ });
++ if (img->total_disk_size != total_disk_size_computed) {
++ fprintf_ind(file, ind,
++ " ERROR: total_disk_size is %u, but "
++ "computed value is %ld\n",
++ img->total_disk_size, total_disk_size_computed);
++ }
++ if (img->total_duration != total_duration_computed) {
++ fprintf_ind(file, ind,
++ " ERROR: total_duration is %d, but computed "
++ "value is %d\n",
++ img->total_duration, total_duration_computed);
++ }
++ kh_foreach_value(img->placements, placement, {
++ gr_dump_placement_info(file, placement, 4);
++ if (placement->image != img)
++ fprintf_ind(file, 8,
++ "ERROR: WRONG IMAGE POINTER\n");
++ fprintf_ind(file, 8,
++ "Pixmaps:\n");
++ gr_dump_placement_pixmaps(file, placement, 12);
++ unsigned ram_size =
++ gr_placement_current_ram_size(placement);
++ images_ram_size_computed += ram_size;
++ });
++ });
++ if (images_ram_size != images_ram_size_computed) {
++ fprintf_ind(file, ind,
++ "ERROR: images_ram_size is %ld, but computed value "
++ "is %ld\n",
++ images_ram_size, images_ram_size_computed);
++ }
++ if (images_disk_size != images_disk_size_computed) {
++ fprintf_ind(file, ind,
++ "ERROR: images_disk_size is %ld, but computed value "
++ "is %ld\n",
++ images_disk_size, images_disk_size_computed);
++ }
++ fprintf_ind(file, ind, "===========================================\n");
++}
++
++/// Executes `command` with the name of the file corresponding to `image_id` as
++/// the argument. Executes xmessage with an error message on failure.
++// TODO: Currently we do this for the first frame only. Not sure what to do with
++// animations.
++void gr_preview_image(uint32_t image_id, const char *exec) {
++ char command[256];
++ size_t len;
++ Image *img = gr_find_image(image_id);
++ if (img) {
++ ImageFrame *frame = &img->first_frame;
++ char filename[MAX_FILENAME_SIZE];
++ gr_get_frame_filename(frame, filename, MAX_FILENAME_SIZE);
++ if (frame->disk_size == 0) {
++ len = snprintf(command, 255,
++ "xmessage 'Image with id=%u is not "
++ "fully copied to %s'",
++ image_id, sanitized_filename(filename));
++ } else {
++ len = snprintf(command, 255, "%s %s &", exec,
++ sanitized_filename(filename));
++ }
++ } else {
++ len = snprintf(command, 255,
++ "xmessage 'Cannot find image with id=%u'",
++ image_id);
++ }
++ if (len > 255) {
++ fprintf(stderr, "error: command too long: %s\n", command);
++ snprintf(command, 255, "xmessage 'error: command too long'");
++ }
++ if (system(command) != 0) {
++ fprintf(stderr, "error: could not execute command %s\n",
++ command);
++ }
++}
++
++/// Executes `<st> -e less <file>` where <file> is the name of a temporary file
++/// containing the information about an image and placement, and <st> is
++/// specified with `st_executable`.
++void gr_show_image_info(uint32_t image_id, uint32_t placement_id,
++ uint32_t imgcol, uint32_t imgrow,
++ char is_classic_placeholder, int32_t diacritic_count,
++ char *st_executable) {
++ char filename[MAX_FILENAME_SIZE];
++ snprintf(filename, sizeof(filename), "%s/info-%u", cache_dir, image_id);
++ FILE *file = fopen(filename, "w");
++ if (!file) {
++ perror("fopen");
++ return;
++ }
++ // Basic information about the cell.
++ fprintf(file, "image_id = %u = 0x%08X\n", image_id, image_id);
++ fprintf(file, "placement_id = %u = 0x%08X\n", placement_id, placement_id);
++ fprintf(file, "column = %d, row = %d\n", imgcol, imgrow);
++ fprintf(file, "classic/unicode placeholder = %s\n",
++ is_classic_placeholder ? "classic" : "unicode");
++ fprintf(file, "original diacritic count = %d\n", diacritic_count);
++ // Information about the image and the placement.
++ Image *img = gr_find_image(image_id);
++ ImagePlacement *placement = gr_find_placement(img, placement_id);
++ gr_dump_image_info(file, img, 0);
++ gr_dump_placement_info(file, placement, 0);
++ if (img) {
++ fprintf(file, "Frames:\n");
++ foreach_frame(*img, frame, {
++ gr_dump_frame_info(file, frame, 4);
++ });
++ }
++ if (placement) {
++ fprintf(file, "Placement pixmaps:\n");
++ gr_dump_placement_pixmaps(file, placement, 4);
++ }
++ fclose(file);
++ char *argv[] = {st_executable, "-e", "less", filename, NULL};
++ if (posix_spawnp(NULL, st_executable, NULL, NULL, argv, environ) != 0) {
++ perror("posix_spawnp");
++ return;
++ }
++}
++
++////////////////////////////////////////////////////////////////////////////////
++// Appending and displaying image rectangles.
++////////////////////////////////////////////////////////////////////////////////
++
++/// Displays debug information in the rectangle using colors col1 and col2.
++static void gr_displayinfo(Drawable buf, ImageRect *rect, int col1, int col2,
++ const char *message) {
++ int w_pix = (rect->img_end_col - rect->img_start_col) * rect->cw;
++ int h_pix = (rect->img_end_row - rect->img_start_row) * rect->ch;
++ Display *disp = imlib_context_get_display();
++ GC gc = XCreateGC(disp, buf, 0, NULL);
++ char info[MAX_INFO_LEN];
++ if (rect->placement_id)
++ snprintf(info, MAX_INFO_LEN, "%s%u/%u [%d:%d)x[%d:%d)", message,
++ rect->image_id, rect->placement_id,
++ rect->img_start_col, rect->img_end_col,
++ rect->img_start_row, rect->img_end_row);
++ else
++ snprintf(info, MAX_INFO_LEN, "%s%u [%d:%d)x[%d:%d)", message,
++ rect->image_id, rect->img_start_col, rect->img_end_col,
++ rect->img_start_row, rect->img_end_row);
++ XSetForeground(disp, gc, col1);
++ XDrawString(disp, buf, gc, rect->screen_x_pix + 4,
++ rect->screen_y_pix + h_pix - 3, info, strlen(info));
++ XSetForeground(disp, gc, col2);
++ XDrawString(disp, buf, gc, rect->screen_x_pix + 2,
++ rect->screen_y_pix + h_pix - 5, info, strlen(info));
++ XFreeGC(disp, gc);
++}
++
++/// Draws a rectangle (bounding box) for debugging.
++static void gr_showrect(Drawable buf, ImageRect *rect) {
++ int w_pix = (rect->img_end_col - rect->img_start_col) * rect->cw;
++ int h_pix = (rect->img_end_row - rect->img_start_row) * rect->ch;
++ Display *disp = imlib_context_get_display();
++ GC gc = XCreateGC(disp, buf, 0, NULL);
++ XSetForeground(disp, gc, 0xFF00FF00);
++ XDrawRectangle(disp, buf, gc, rect->screen_x_pix, rect->screen_y_pix,
++ w_pix - 1, h_pix - 1);
++ XSetForeground(disp, gc, 0xFFFF0000);
++ XDrawRectangle(disp, buf, gc, rect->screen_x_pix + 1,
++ rect->screen_y_pix + 1, w_pix - 3, h_pix - 3);
++ XFreeGC(disp, gc);
++}
++
++/// Updates the next redraw time for the given row. Resizes the
++/// next_redraw_times array if needed.
++static void gr_update_next_redraw_time(int row, Milliseconds next_redraw) {
++ if (next_redraw == 0)
++ return;
++ if (row >= kv_size(next_redraw_times)) {
++ size_t old_size = kv_size(next_redraw_times);
++ kv_a(Milliseconds, next_redraw_times, row);
++ for (size_t i = old_size; i <= row; ++i)
++ kv_A(next_redraw_times, i) = 0;
++ }
++ Milliseconds old_value = kv_A(next_redraw_times, row);
++ if (old_value == 0 || old_value > next_redraw)
++ kv_A(next_redraw_times, row) = next_redraw;
++}
++
++/// Draws the given part of an image.
++static void gr_drawimagerect(Drawable buf, ImageRect *rect) {
++ ImagePlacement *placement =
++ gr_find_image_and_placement(rect->image_id, rect->placement_id);
++ // If the image does not exist or image display is switched off, draw
++ // the bounding box.
++ if (!placement || !graphics_display_images) {
++ gr_showrect(buf, rect);
++ if (graphics_debug_mode == GRAPHICS_DEBUG_LOG_AND_BOXES)
++ gr_displayinfo(buf, rect, 0xFF000000, 0xFFFFFFFF, "");
++ return;
++ }
++
++ Image *img = placement->image;
++
++ if (img->last_redraw < drawing_start_time) {
++ // This is the first time we draw this image in this redraw
++ // cycle. Update the frame index we are going to display. Note
++ // that currently all image placements are synchronized.
++ int old_frame = img->current_frame;
++ gr_update_frame_index(img, drawing_start_time);
++ img->last_redraw = drawing_start_time;
++ }
++
++ // Adjust next redraw times for the rows of this image rect.
++ if (img->next_redraw) {
++ for (int row = rect->screen_y_row;
++ row <= rect->screen_y_row + rect->img_end_row -
++ rect->img_start_row - 1; ++row) {
++ gr_update_next_redraw_time(
++ row, img->next_redraw);
++ }
++ }
++
++ // Load the frame.
++ Pixmap pixmap = gr_load_pixmap(placement, img->current_frame, rect->cw,
++ rect->ch);
++
++ // If the image couldn't be loaded, display the bounding box.
++ if (!pixmap) {
++ gr_showrect(buf, rect);
++ if (graphics_debug_mode == GRAPHICS_DEBUG_LOG_AND_BOXES)
++ gr_displayinfo(buf, rect, 0xFF000000, 0xFFFFFFFF, "");
++ return;
++ }
++
++ int src_x = rect->img_start_col * rect->cw;
++ int src_y = rect->img_start_row * rect->ch;
++ int width = (rect->img_end_col - rect->img_start_col) * rect->cw;
++ int height = (rect->img_end_row - rect->img_start_row) * rect->ch;
++ int dst_x = rect->screen_x_pix;
++ int dst_y = rect->screen_y_pix;
++
++ // Display the image.
++ Display *disp = imlib_context_get_display();
++ Visual *vis = imlib_context_get_visual();
++
++ // Create an xrender picture for the window.
++ XRenderPictFormat *win_format =
++ XRenderFindVisualFormat(disp, vis);
++ Picture window_pic =
++ XRenderCreatePicture(disp, buf, win_format, 0, NULL);
++
++ // If needed, invert the image pixmap. Note that this naive approach of
++ // inverting the pixmap is not entirely correct, because the pixmap is
++ // premultiplied. But the result is good enough to visually indicate
++ // selection.
++ if (rect->reverse) {
++ unsigned pixmap_w =
++ (unsigned)placement->cols * placement->scaled_cw;
++ unsigned pixmap_h =
++ (unsigned)placement->rows * placement->scaled_ch;
++ Pixmap invpixmap =
++ XCreatePixmap(disp, buf, pixmap_w, pixmap_h, 32);
++ XGCValues gcv = {.function = GXcopyInverted};
++ GC gc = XCreateGC(disp, invpixmap, GCFunction, &gcv);
++ XCopyArea(disp, pixmap, invpixmap, gc, 0, 0, pixmap_w,
++ pixmap_h, 0, 0);
++ XFreeGC(disp, gc);
++ pixmap = invpixmap;
++ }
++
++ // Create a picture for the image pixmap.
++ XRenderPictFormat *pic_format =
++ XRenderFindStandardFormat(disp, PictStandardARGB32);
++ Picture pixmap_pic =
++ XRenderCreatePicture(disp, pixmap, pic_format, 0, NULL);
++
++ // Composite the image onto the window. In the reverse mode we ignore
++ // the alpha channel of the image because the naive inversion above
++ // seems to invert the alpha channel as well.
++ int pictop = rect->reverse ? PictOpSrc : PictOpOver;
++ XRenderComposite(disp, pictop, pixmap_pic, 0, window_pic,
++ src_x, src_y, src_x, src_y, dst_x, dst_y, width,
++ height);
++
++ // Free resources
++ XRenderFreePicture(disp, pixmap_pic);
++ XRenderFreePicture(disp, window_pic);
++ if (rect->reverse)
++ XFreePixmap(disp, pixmap);
++
++ // In debug mode always draw bounding boxes and print info.
++ if (graphics_debug_mode == GRAPHICS_DEBUG_LOG_AND_BOXES) {
++ gr_showrect(buf, rect);
++ gr_displayinfo(buf, rect, 0xFF000000, 0xFFFFFFFF, "");
++ }
++}
++
++/// Removes the given image rectangle.
++static void gr_freerect(ImageRect *rect) { memset(rect, 0, sizeof(ImageRect)); }
++
++/// Returns the bottom coordinate of the rect.
++static int gr_getrectbottom(ImageRect *rect) {
++ return rect->screen_y_pix +
++ (rect->img_end_row - rect->img_start_row) * rect->ch;
++}
++
++/// Prepare for image drawing. `cw` and `ch` are dimensions of the cell.
++void gr_start_drawing(Drawable buf, int cw, int ch) {
++ current_cw = cw;
++ current_ch = ch;
++ this_redraw_cycle_loaded_files = 0;
++ this_redraw_cycle_loaded_pixmaps = 0;
++ drawing_start_time = gr_now_ms();
++ imlib_context_set_drawable(buf);
++}
++
++/// Finish image drawing. This functions will draw all the rectangles left to
++/// draw.
++void gr_finish_drawing(Drawable buf) {
++ // Draw and then delete all known image rectangles.
++ for (size_t i = 0; i < MAX_IMAGE_RECTS; ++i) {
++ ImageRect *rect = &image_rects[i];
++ if (!rect->image_id)
++ continue;
++ gr_drawimagerect(buf, rect);
++ gr_freerect(rect);
++ }
++
++ // Compute the delay until the next redraw as the minimum of the next
++ // redraw delays for all rows.
++ Milliseconds drawing_end_time = gr_now_ms();
++ graphics_next_redraw_delay = INT_MAX;
++ for (int row = 0; row < kv_size(next_redraw_times); ++row) {
++ Milliseconds row_next_redraw = kv_A(next_redraw_times, row);
++ if (row_next_redraw > 0) {
++ int delay = MAX(graphics_animation_min_delay,
++ row_next_redraw - drawing_end_time);
++ graphics_next_redraw_delay =
++ MIN(graphics_next_redraw_delay, delay);
++ }
++ }
++
++ // In debug mode display additional info.
++ if (graphics_debug_mode) {
++ int milliseconds = drawing_end_time - drawing_start_time;
++
++ Display *disp = imlib_context_get_display();
++ GC gc = XCreateGC(disp, buf, 0, NULL);
++ const char *debug_mode_str =
++ graphics_debug_mode == GRAPHICS_DEBUG_LOG_AND_BOXES
++ ? "(boxes shown) "
++ : "";
++ int redraw_delay = graphics_next_redraw_delay == INT_MAX
++ ? -1
++ : graphics_next_redraw_delay;
++ char info[MAX_INFO_LEN];
++ snprintf(info, MAX_INFO_LEN,
++ "%sRender time: %d ms ram %ld K disk %ld K count "
++ "%d cell %dx%d delay %d",
++ debug_mode_str, milliseconds, images_ram_size / 1024,
++ images_disk_size / 1024, kh_size(images), current_cw,
++ current_ch, redraw_delay);
++ XSetForeground(disp, gc, 0xFF000000);
++ XFillRectangle(disp, buf, gc, 0, 0, 600, 16);
++ XSetForeground(disp, gc, 0xFFFFFFFF);
++ XDrawString(disp, buf, gc, 0, 14, info, strlen(info));
++ XFreeGC(disp, gc);
++
++ if (milliseconds > 0) {
++ fprintf(stderr, "%s (loaded %d files, %d pixmaps)\n",
++ info, this_redraw_cycle_loaded_files,
++ this_redraw_cycle_loaded_pixmaps);
++ }
++ }
++
++ // Check the limits in case we have used too much ram for placements.
++ gr_check_limits();
++}
++
++// Add an image rectangle to the list of rectangles to draw.
++void gr_append_imagerect(Drawable buf, uint32_t image_id, uint32_t placement_id,
++ int img_start_col, int img_end_col, int img_start_row,
++ int img_end_row, int x_col, int y_row, int x_pix,
++ int y_pix, int cw, int ch, int reverse) {
++ current_cw = cw;
++ current_ch = ch;
++
++ ImageRect new_rect;
++ new_rect.image_id = image_id;
++ new_rect.placement_id = placement_id;
++ new_rect.img_start_col = img_start_col;
++ new_rect.img_end_col = img_end_col;
++ new_rect.img_start_row = img_start_row;
++ new_rect.img_end_row = img_end_row;
++ new_rect.screen_y_row = y_row;
++ new_rect.screen_x_pix = x_pix;
++ new_rect.screen_y_pix = y_pix;
++ new_rect.ch = ch;
++ new_rect.cw = cw;
++ new_rect.reverse = reverse;
++
++ // Display some red text in debug mode.
++ if (graphics_debug_mode == GRAPHICS_DEBUG_LOG_AND_BOXES)
++ gr_displayinfo(buf, &new_rect, 0xFF000000, 0xFFFF0000, "? ");
++
++ // If it's the empty image (image_id=0) or an empty rectangle, do
++ // nothing.
++ if (image_id == 0 || img_end_col - img_start_col <= 0 ||
++ img_end_row - img_start_row <= 0)
++ return;
++ // Try to find a rect to merge with.
++ ImageRect *free_rect = NULL;
++ for (size_t i = 0; i < MAX_IMAGE_RECTS; ++i) {
++ ImageRect *rect = &image_rects[i];
++ if (rect->image_id == 0) {
++ if (!free_rect)
++ free_rect = rect;
++ continue;
++ }
++ if (rect->image_id != image_id ||
++ rect->placement_id != placement_id || rect->cw != cw ||
++ rect->ch != ch || rect->reverse != reverse)
++ continue;
++ // We only support the case when the new stripe is added to the
++ // bottom of an existing rectangle and they are perfectly
++ // aligned.
++ if (rect->img_end_row == img_start_row &&
++ gr_getrectbottom(rect) == y_pix) {
++ if (rect->img_start_col == img_start_col &&
++ rect->img_end_col == img_end_col &&
++ rect->screen_x_pix == x_pix) {
++ rect->img_end_row = img_end_row;
++ return;
++ }
++ }
++ }
++ // If we haven't merged the new rect with any existing rect, and there
++ // is no free rect, we have to render one of the existing rects.
++ if (!free_rect) {
++ for (size_t i = 0; i < MAX_IMAGE_RECTS; ++i) {
++ ImageRect *rect = &image_rects[i];
++ if (!free_rect || gr_getrectbottom(free_rect) >
++ gr_getrectbottom(rect))
++ free_rect = rect;
++ }
++ gr_drawimagerect(buf, free_rect);
++ gr_freerect(free_rect);
++ }
++ // Start a new rectangle in `free_rect`.
++ *free_rect = new_rect;
++}
++
++/// Mark rows containing animations as dirty if it's time to redraw them. Must
++/// be called right after `gr_start_drawing`.
++void gr_mark_dirty_animations(int *dirty, int rows) {
++ if (rows < kv_size(next_redraw_times))
++ kv_size(next_redraw_times) = rows;
++ if (rows * 2 < kv_max(next_redraw_times))
++ kv_resize(Milliseconds, next_redraw_times, rows);
++ for (int i = 0; i < MIN(rows, kv_size(next_redraw_times)); ++i) {
++ if (dirty[i]) {
++ kv_A(next_redraw_times, i) = 0;
++ continue;
++ }
++ Milliseconds next_update = kv_A(next_redraw_times, i);
++ if (next_update > 0 && next_update <= drawing_start_time) {
++ dirty[i] = 1;
++ kv_A(next_redraw_times, i) = 0;
++ }
++ }
++}
++
++////////////////////////////////////////////////////////////////////////////////
++// Command parsing and handling.
++////////////////////////////////////////////////////////////////////////////////
++
++/// A parsed kitty graphics protocol command.
++typedef struct {
++ /// The command itself, without the 'G'.
++ char *command;
++ /// The payload (after ';').
++ char *payload;
++ /// 'a=', may be 't', 'q', 'f', 'T', 'p', 'd', 'a'.
++ char action;
++ /// 'q=', 1 to suppress OK response, 2 to suppress errors too.
++ int quiet;
++ /// 'f=', use 24 or 32 for raw pixel data, 100 to autodetect with
++ /// imlib2. If 'f=0', will try to load with imlib2, then fallback to
++ /// 32-bit pixel data.
++ int format;
++ /// 'o=', may be 'z' for RFC 1950 ZLIB.
++ int compression;
++ /// 't=', may be 'f', 't' or 'd'.
++ char transmission_medium;
++ /// 'd='
++ char delete_specifier;
++ /// 's=', 'v=', if 'a=t' or 'a=T', used only when 'f=24' or 'f=32'.
++ /// When 'a=f', this is the size of the frame rectangle when composed on
++ /// top of another frame.
++ int frame_pix_width, frame_pix_height;
++ /// 'x=', 'y=' - top-left corner of the source rectangle.
++ int src_pix_x, src_pix_y;
++ /// 'w=', 'h=' - width and height of the source rectangle.
++ int src_pix_width, src_pix_height;
++ /// 'r=', 'c='
++ int rows, columns;
++ /// 'i='
++ uint32_t image_id;
++ /// 'I='
++ uint32_t image_number;
++ /// 'p='
++ uint32_t placement_id;
++ /// 'm=', may be 0 or 1.
++ int more;
++ /// True if either 'm=0' or 'm=1' is specified.
++ char is_data_transmission;
++ /// True if turns out that this command is a continuation of a data
++ /// transmission and not the first one for this image. Populated by
++ /// `gr_handle_transmit_command`.
++ char is_direct_transmission_continuation;
++ /// 'S=', used to check the size of uploaded data.
++ int size;
++ /// 'U=', whether it's a virtual placement for Unicode placeholders.
++ int virtual;
++ /// 'C=', if true, do not move the cursor when displaying this placement
++ /// (non-virtual placements only).
++ char do_not_move_cursor;
++ // ---------------------------------------------------------------------
++ // Animation-related fields. Their keys often overlap with keys of other
++ // commands, so these make sense only if the action is 'a=f' (frame
++ // transmission) or 'a=a' (animation control).
++ //
++ // 'x=' and 'y=', the relative position of the frame image when it's
++ // composed on top of another frame.
++ int frame_dst_pix_x, frame_dst_pix_y;
++ /// 'X=', 'X=1' to replace colors instead of alpha blending on top of
++ /// the background color or frame.
++ char replace_instead_of_blending;
++ /// 'Y=', the background color in the 0xRRGGBBAA format (still
++ /// transmitted as a decimal number).
++ uint32_t background_color;
++ /// (Only for 'a=f'). 'c=', the 1-based index of the background frame.
++ int background_frame;
++ /// (Only for 'a=a'). 'c=', sets the index of the current frame.
++ int current_frame;
++ /// 'r=', the 1-based index of the frame to edit.
++ int edit_frame;
++ /// 'z=', the duration of the frame. Zero if not specified, negative if
++ /// the frame is gapless (i.e. skipped).
++ int gap;
++ /// (Only for 'a=a'). 's=', if non-zero, sets the state of the
++ /// animation, 1 to stop, 2 to run in loading mode, 3 to loop.
++ int animation_state;
++ /// (Only for 'a=a'). 'v=', if non-zero, sets the number of times the
++ /// animation will loop. 1 to loop infinitely, N to loop N-1 times.
++ int loops;
++} GraphicsCommand;
++
++/// Replaces all non-printed characters in `str` with '?' and truncates the
++/// string to `max_size`, maybe inserting ellipsis at the end.
++static void sanitize_str(char *str, size_t max_size) {
++ assert(max_size >= 4);
++ for (size_t i = 0; i < max_size; ++i) {
++ unsigned c = str[i];
++ if (c == '\0')
++ return;
++ if (c >= 128 || !isprint(c))
++ str[i] = '?';
++ }
++ str[max_size - 1] = '\0';
++ str[max_size - 2] = '.';
++ str[max_size - 3] = '.';
++ str[max_size - 4] = '.';
++}
++
++/// A non-destructive version of `sanitize_str`. Uses a static buffer, so be
++/// careful.
++static const char *sanitized_filename(const char *str) {
++ static char buf[MAX_FILENAME_SIZE];
++ strncpy(buf, str, sizeof(buf));
++ sanitize_str(buf, sizeof(buf));
++ return buf;
++}
++
++/// Creates a response to the current command in `graphics_command_result`.
++static void gr_createresponse(uint32_t image_id, uint32_t image_number,
++ uint32_t placement_id, const char *msg) {
++ if (!image_id && !image_number && !placement_id) {
++ // Nobody expects the response in this case, so just print it to
++ // stderr.
++ fprintf(stderr,
++ "error: No image id or image number or placement_id, "
++ "but still there is a response: %s\n",
++ msg);
++ return;
++ }
++ char *buf = graphics_command_result.response;
++ size_t maxlen = MAX_GRAPHICS_RESPONSE_LEN;
++ size_t written;
++ written = snprintf(buf, maxlen, "\033_G");
++ buf += written;
++ maxlen -= written;
++ if (image_id) {
++ written = snprintf(buf, maxlen, "i=%u,", image_id);
++ buf += written;
++ maxlen -= written;
++ }
++ if (image_number) {
++ written = snprintf(buf, maxlen, "I=%u,", image_number);
++ buf += written;
++ maxlen -= written;
++ }
++ if (placement_id) {
++ written = snprintf(buf, maxlen, "p=%u,", placement_id);
++ buf += written;
++ maxlen -= written;
++ }
++ buf[-1] = ';';
++ written = snprintf(buf, maxlen, "%s\033\\", msg);
++ buf += written;
++ maxlen -= written;
++ buf[-2] = '\033';
++ buf[-1] = '\\';
++}
++
++/// Creates the 'OK' response to the current command, unless suppressed or a
++/// non-final data transmission.
++static void gr_reportsuccess_cmd(GraphicsCommand *cmd) {
++ if (cmd->quiet < 1 && !cmd->more)
++ gr_createresponse(cmd->image_id, cmd->image_number,
++ cmd->placement_id, "OK");
++}
++
++/// Creates the 'OK' response to the current command (unless suppressed).
++static void gr_reportsuccess_frame(ImageFrame *frame) {
++ uint32_t id = frame->image->query_id ? frame->image->query_id
++ : frame->image->image_id;
++ if (frame->quiet < 1)
++ gr_createresponse(id, frame->image->image_number,
++ frame->image->initial_placement_id, "OK");
++}
++
++/// Creates an error response to the current command (unless suppressed).
++static void gr_reporterror_cmd(GraphicsCommand *cmd, const char *format, ...) {
++ char errmsg[MAX_GRAPHICS_RESPONSE_LEN];
++ graphics_command_result.error = 1;
++ va_list args;
++ va_start(args, format);
++ vsnprintf(errmsg, MAX_GRAPHICS_RESPONSE_LEN, format, args);
++ va_end(args);
++
++ fprintf(stderr, "%s in command: %s\n", errmsg, cmd->command);
++ if (cmd->quiet < 2)
++ gr_createresponse(cmd->image_id, cmd->image_number,
++ cmd->placement_id, errmsg);
++}
++
++/// Creates an error response to the current command (unless suppressed).
++static void gr_reporterror_frame(ImageFrame *frame, const char *format, ...) {
++ char errmsg[MAX_GRAPHICS_RESPONSE_LEN];
++ graphics_command_result.error = 1;
++ va_list args;
++ va_start(args, format);
++ vsnprintf(errmsg, MAX_GRAPHICS_RESPONSE_LEN, format, args);
++ va_end(args);
++
++ if (!frame) {
++ fprintf(stderr, "%s\n", errmsg);
++ gr_createresponse(0, 0, 0, errmsg);
++ } else {
++ uint32_t id = frame->image->query_id ? frame->image->query_id
++ : frame->image->image_id;
++ fprintf(stderr, "%s id=%u\n", errmsg, id);
++ if (frame->quiet < 2)
++ gr_createresponse(id, frame->image->image_number,
++ frame->image->initial_placement_id,
++ errmsg);
++ }
++}
++
++/// Loads an image and creates a success/failure response. Returns `frame`, or
++/// NULL if it's a query action and the image was deleted.
++static ImageFrame *gr_loadimage_and_report(ImageFrame *frame) {
++ gr_load_imlib_object(frame);
++ if (!frame->imlib_object) {
++ gr_reporterror_frame(frame, "EBADF: could not load image");
++ } else {
++ gr_reportsuccess_frame(frame);
++ }
++ // If it was a query action, discard the image.
++ if (frame->image->query_id) {
++ gr_delete_image(frame->image);
++ return NULL;
++ }
++ return frame;
++}
++
++/// Creates an appropriate uploading failure response to the current command.
++static void gr_reportuploaderror(ImageFrame *frame) {
++ switch (frame->uploading_failure) {
++ case 0:
++ return;
++ case ERROR_CANNOT_OPEN_CACHED_FILE:
++ gr_reporterror_frame(frame,
++ "EIO: could not create a file for image");
++ break;
++ case ERROR_OVER_SIZE_LIMIT:
++ gr_reporterror_frame(
++ frame,
++ "EFBIG: the size of the uploaded image exceeded "
++ "the image size limit %u",
++ graphics_max_single_image_file_size);
++ break;
++ case ERROR_UNEXPECTED_SIZE:
++ gr_reporterror_frame(frame,
++ "EINVAL: the size of the uploaded image %u "
++ "doesn't match the expected size %u",
++ frame->disk_size, frame->expected_size);
++ break;
++ };
++}
++
++/// Displays a non-virtual placement. This functions records the information in
++/// `graphics_command_result`, the placeholder itself is created by the terminal
++/// after handling the current command in the graphics module.
++static void gr_display_nonvirtual_placement(ImagePlacement *placement) {
++ if (placement->virtual)
++ return;
++ if (placement->image->first_frame.status < STATUS_RAM_LOADING_SUCCESS)
++ return;
++ // Infer the placement size if needed.
++ gr_infer_placement_size_maybe(placement);
++ // Populate the information about the placeholder which will be created
++ // by the terminal.
++ graphics_command_result.create_placeholder = 1;
++ graphics_command_result.placeholder.image_id = placement->image->image_id;
++ graphics_command_result.placeholder.placement_id = placement->placement_id;
++ graphics_command_result.placeholder.columns = placement->cols;
++ graphics_command_result.placeholder.rows = placement->rows;
++ graphics_command_result.placeholder.do_not_move_cursor =
++ placement->do_not_move_cursor;
++ GR_LOG("Creating a placeholder for %u/%u %d x %d\n",
++ placement->image->image_id, placement->placement_id,
++ placement->cols, placement->rows);
++}
++
++/// Marks the rows that are occupied by the image as dirty.
++static void gr_schedule_image_redraw(Image *img) {
++ if (!img)
++ return;
++ gr_schedule_image_redraw_by_id(img->image_id);
++}
++
++/// Appends data from `payload` to the frame `frame` when using direct
++/// transmission. Note that we report errors only for the final command
++/// (`!more`) to avoid spamming the client. If the frame is not specified, use
++/// the image id and frame index we are currently uploading.
++static void gr_append_data(ImageFrame *frame, const char *payload, int more) {
++ if (!frame) {
++ Image *img = gr_find_image(current_upload_image_id);
++ frame = gr_get_frame(img, current_upload_frame_index);
++ GR_LOG("Appending data to image %u frame %d\n",
++ current_upload_image_id, current_upload_frame_index);
++ if (!img)
++ GR_LOG("ERROR: this image doesn't exist\n");
++ if (!frame)
++ GR_LOG("ERROR: this frame doesn't exist\n");
++ }
++ if (!more) {
++ current_upload_image_id = 0;
++ current_upload_frame_index = 0;
++ }
++ if (!frame) {
++ if (!more)
++ gr_reporterror_frame(NULL, "ENOENT: could not find the "
++ "image to append data to");
++ return;
++ }
++ if (frame->status != STATUS_UPLOADING) {
++ if (!more)
++ gr_reportuploaderror(frame);
++ return;
++ }
++
++ // Decode the data.
++ size_t data_size = 0;
++ char *data = gr_base64dec(payload, &data_size);
++
++ GR_LOG("appending %u + %zu = %zu bytes\n", frame->disk_size, data_size,
++ frame->disk_size + data_size);
++
++ // Do not append this data if the image exceeds the size limit.
++ if (frame->disk_size + data_size >
++ graphics_max_single_image_file_size ||
++ frame->expected_size > graphics_max_single_image_file_size) {
++ free(data);
++ gr_delete_imagefile(frame);
++ frame->uploading_failure = ERROR_OVER_SIZE_LIMIT;
++ if (!more)
++ gr_reportuploaderror(frame);
++ return;
++ }
++
++ // If there is no open file corresponding to the image, create it.
++ if (!frame->open_file) {
++ gr_make_sure_tmpdir_exists();
++ char filename[MAX_FILENAME_SIZE];
++ gr_get_frame_filename(frame, filename, MAX_FILENAME_SIZE);
++ FILE *file = fopen(filename, frame->disk_size ? "a" : "w");
++ if (!file) {
++ frame->status = STATUS_UPLOADING_ERROR;
++ frame->uploading_failure = ERROR_CANNOT_OPEN_CACHED_FILE;
++ if (!more)
++ gr_reportuploaderror(frame);
++ return;
++ }
++ frame->open_file = file;
++ }
++
++ // Write data to the file and update disk size variables.
++ fwrite(data, 1, data_size, frame->open_file);
++ free(data);
++ frame->disk_size += data_size;
++ frame->image->total_disk_size += data_size;
++ images_disk_size += data_size;
++ gr_touch_frame(frame);
++
++ if (more) {
++ current_upload_image_id = frame->image->image_id;
++ current_upload_frame_index = frame->index;
++ } else {
++ current_upload_image_id = 0;
++ current_upload_frame_index = 0;
++ // Close the file.
++ if (frame->open_file) {
++ fclose(frame->open_file);
++ frame->open_file = NULL;
++ }
++ frame->status = STATUS_UPLOADING_SUCCESS;
++ uint32_t placement_id = frame->image->default_placement;
++ if (frame->expected_size &&
++ frame->expected_size != frame->disk_size) {
++ // Report failure if the uploaded image size doesn't
++ // match the expected size.
++ frame->status = STATUS_UPLOADING_ERROR;
++ frame->uploading_failure = ERROR_UNEXPECTED_SIZE;
++ gr_reportuploaderror(frame);
++ } else {
++ // Make sure to redraw all existing image instances.
++ gr_schedule_image_redraw(frame->image);
++ // Try to load the image into ram and report the result.
++ frame = gr_loadimage_and_report(frame);
++ // If there is a non-virtual image placement, we may
++ // need to display it.
++ if (frame && frame->index == 1) {
++ Image *img = frame->image;
++ ImagePlacement *placement = NULL;
++ kh_foreach_value(img->placements, placement, {
++ gr_display_nonvirtual_placement(placement);
++ });
++ }
++ }
++ }
++
++ // Check whether we need to delete old images.
++ gr_check_limits();
++}
++
++/// Finds the image either by id or by number specified in the command and sets
++/// the image_id of `cmd` if the image was found.
++static Image *gr_find_image_for_command(GraphicsCommand *cmd) {
++ if (cmd->image_id)
++ return gr_find_image(cmd->image_id);
++ Image *img = NULL;
++ // If the image number is not specified, we can't find the image, unless
++ // it's a put command, in which case we will try the last image.
++ if (cmd->image_number == 0 && cmd->action == 'p')
++ img = gr_find_image(last_image_id);
++ else
++ img = gr_find_image_by_number(cmd->image_number);
++ if (img)
++ cmd->image_id = img->image_id;
++ return img;
++}
++
++/// Creates a new image or a new frame in an existing image (depending on the
++/// command's action) and initializes its parameters from the command.
++static ImageFrame *gr_new_image_or_frame_from_command(GraphicsCommand *cmd) {
++ if (cmd->format != 0 && cmd->format != 32 && cmd->format != 24 &&
++ cmd->compression != 0) {
++ gr_reporterror_cmd(cmd, "EINVAL: compression is supported only "
++ "for raw pixel data (f=32 or f=24)");
++ // Even though we report an error, we still create an image.
++ }
++
++ Image *img = NULL;
++ if (cmd->action == 'f') {
++ // If it's a frame transmission action, there must be an
++ // existing image.
++ img = gr_find_image_for_command(cmd);
++ if (!img) {
++ gr_reporterror_cmd(cmd, "ENOENT: image not found");
++ return NULL;
++ }
++ } else {
++ // Otherwise create a new image object. If the action is `q`,
++ // we'll use random id instead of the one specified in the
++ // command.
++ uint32_t image_id = cmd->action == 'q' ? 0 : cmd->image_id;
++ img = gr_new_image(image_id);
++ if (!img)
++ return NULL;
++ if (cmd->action == 'q')
++ img->query_id = cmd->image_id;
++ else if (!cmd->image_id)
++ cmd->image_id = img->image_id;
++ // Set the image number.
++ img->image_number = cmd->image_number;
++ }
++
++ ImageFrame *frame = gr_append_new_frame(img);
++ // Initialize the frame.
++ frame->expected_size = cmd->size;
++ frame->format = cmd->format;
++ frame->compression = cmd->compression;
++ frame->background_color = cmd->background_color;
++ frame->background_frame_index = cmd->background_frame;
++ frame->gap = cmd->gap;
++ img->total_duration += frame->gap;
++ frame->blend = !cmd->replace_instead_of_blending;
++ frame->data_pix_width = cmd->frame_pix_width;
++ frame->data_pix_height = cmd->frame_pix_height;
++ if (cmd->action == 'f') {
++ frame->x = cmd->frame_dst_pix_x;
++ frame->y = cmd->frame_dst_pix_y;
++ }
++ // We save the quietness information in the frame because for direct
++ // transmission subsequent transmission command won't contain this info.
++ frame->quiet = cmd->quiet;
++ return frame;
++}
++
++/// Removes a file if it actually looks like a temporary file.
++static void gr_delete_tmp_file(const char *filename) {
++ if (strstr(filename, "tty-graphics-protocol") == NULL)
++ return;
++ if (strstr(filename, "/tmp/") != filename) {
++ const char *tmpdir = getenv("TMPDIR");
++ if (!tmpdir || !tmpdir[0] ||
++ strstr(filename, tmpdir) != filename)
++ return;
++ }
++ unlink(filename);
++}
++
++/// Handles a data transmission command.
++static ImageFrame *gr_handle_transmit_command(GraphicsCommand *cmd) {
++ // The default is direct transmission.
++ if (!cmd->transmission_medium)
++ cmd->transmission_medium = 'd';
++
++ // If neither id, nor image number is specified, and the transmission
++ // medium is 'd' (or unspecified), and there is an active direct upload,
++ // this is a continuation of the upload.
++ if (current_upload_image_id != 0 && cmd->image_id == 0 &&
++ cmd->image_number == 0 && cmd->transmission_medium == 'd') {
++ cmd->image_id = current_upload_image_id;
++ GR_LOG("No images id is specified, continuing uploading %u\n",
++ cmd->image_id);
++ }
++
++ ImageFrame *frame = NULL;
++ if (cmd->transmission_medium == 'f' ||
++ cmd->transmission_medium == 't') {
++ // File transmission.
++ // Create a new image or a new frame of an existing image.
++ frame = gr_new_image_or_frame_from_command(cmd);
++ if (!frame)
++ return NULL;
++ last_image_id = frame->image->image_id;
++ // Decode the filename.
++ char *original_filename = gr_base64dec(cmd->payload, NULL);
++ GR_LOG("Copying image %s\n",
++ sanitized_filename(original_filename));
++ // Stat the file and check that it's a regular file and not too
++ // big.
++ struct stat st;
++ int stat_res = stat(original_filename, &st);
++ const char *stat_error = NULL;
++ if (stat_res)
++ stat_error = strerror(errno);
++ else if (!S_ISREG(st.st_mode))
++ stat_error = "Not a regular file";
++ else if (st.st_size == 0)
++ stat_error = "The size of the file is zero";
++ else if (st.st_size > graphics_max_single_image_file_size)
++ stat_error = "The file is too large";
++ if (stat_error) {
++ gr_reporterror_cmd(cmd,
++ "EBADF: %s", stat_error);
++ fprintf(stderr, "Could not load the file %s\n",
++ sanitized_filename(original_filename));
++ frame->status = STATUS_UPLOADING_ERROR;
++ frame->uploading_failure = ERROR_CANNOT_COPY_FILE;
++ } else {
++ gr_make_sure_tmpdir_exists();
++ // Build the filename for the cached copy of the file.
++ char cache_filename[MAX_FILENAME_SIZE];
++ gr_get_frame_filename(frame, cache_filename,
++ MAX_FILENAME_SIZE);
++ // We will create a symlink to the original file, and
++ // then copy the file to the temporary cache dir. We do
++ // this symlink trick mostly to be able to use cp for
++ // copying, and avoid escaping file name characters when
++ // calling system at the same time.
++ char tmp_filename_symlink[MAX_FILENAME_SIZE + 4] = {0};
++ strcat(tmp_filename_symlink, cache_filename);
++ strcat(tmp_filename_symlink, ".sym");
++ char command[MAX_FILENAME_SIZE + 256];
++ size_t len =
++ snprintf(command, MAX_FILENAME_SIZE + 255,
++ "cp '%s' '%s'", tmp_filename_symlink,
++ cache_filename);
++ if (len > MAX_FILENAME_SIZE + 255 ||
++ symlink(original_filename, tmp_filename_symlink) ||
++ system(command) != 0) {
++ gr_reporterror_cmd(cmd,
++ "EBADF: could not copy the "
++ "image to the cache dir");
++ fprintf(stderr,
++ "Could not copy the image "
++ "%s (symlink %s) to %s",
++ sanitized_filename(original_filename),
++ tmp_filename_symlink, cache_filename);
++ frame->status = STATUS_UPLOADING_ERROR;
++ frame->uploading_failure = ERROR_CANNOT_COPY_FILE;
++ } else {
++ // Get the file size of the copied file.
++ frame->status = STATUS_UPLOADING_SUCCESS;
++ frame->disk_size = st.st_size;
++ frame->image->total_disk_size += st.st_size;
++ images_disk_size += frame->disk_size;
++ if (frame->expected_size &&
++ frame->expected_size != frame->disk_size) {
++ // The file has unexpected size.
++ frame->status = STATUS_UPLOADING_ERROR;
++ frame->uploading_failure =
++ ERROR_UNEXPECTED_SIZE;
++ gr_reportuploaderror(frame);
++ } else {
++ // Everything seems fine, try to load
++ // and redraw existing instances.
++ gr_schedule_image_redraw(frame->image);
++ frame = gr_loadimage_and_report(frame);
++ }
++ }
++ // Delete the symlink.
++ unlink(tmp_filename_symlink);
++ // Delete the original file if it's temporary.
++ if (cmd->transmission_medium == 't')
++ gr_delete_tmp_file(original_filename);
++ }
++ free(original_filename);
++ gr_check_limits();
++ } else if (cmd->transmission_medium == 'd') {
++ // Direct transmission (default if 't' is not specified).
++ frame = gr_get_last_frame(gr_find_image_for_command(cmd));
++ if (frame && frame->status == STATUS_UPLOADING) {
++ // This is a continuation of the previous transmission.
++ cmd->is_direct_transmission_continuation = 1;
++ gr_append_data(frame, cmd->payload, cmd->more);
++ return frame;
++ }
++ // If no action is specified, it's not the first transmission
++ // command. If we couldn't find the image, something went wrong
++ // and we should just drop this command.
++ if (cmd->action == 0)
++ return NULL;
++ // Otherwise create a new image or frame structure.
++ frame = gr_new_image_or_frame_from_command(cmd);
++ if (!frame)
++ return NULL;
++ last_image_id = frame->image->image_id;
++ frame->status = STATUS_UPLOADING;
++ // Start appending data.
++ gr_append_data(frame, cmd->payload, cmd->more);
++ } else {
++ gr_reporterror_cmd(
++ cmd,
++ "EINVAL: transmission medium '%c' is not supported",
++ cmd->transmission_medium);
++ return NULL;
++ }
++
++ return frame;
++}
++
++/// Handles the 'put' command by creating a placement.
++static void gr_handle_put_command(GraphicsCommand *cmd) {
++ if (cmd->image_id == 0 && cmd->image_number == 0) {
++ gr_reporterror_cmd(cmd,
++ "EINVAL: neither image id nor image number "
++ "are specified or both are zero");
++ return;
++ }
++
++ // Find the image with the id or number.
++ Image *img = gr_find_image_for_command(cmd);
++ if (!img) {
++ gr_reporterror_cmd(cmd, "ENOENT: image not found");
++ return;
++ }
++
++ // Create a placement. If a placement with the same id already exists,
++ // it will be deleted. If the id is zero, a random id will be generated.
++ ImagePlacement *placement = gr_new_placement(img, cmd->placement_id);
++ placement->virtual = cmd->virtual;
++ placement->src_pix_x = cmd->src_pix_x;
++ placement->src_pix_y = cmd->src_pix_y;
++ placement->src_pix_width = cmd->src_pix_width;
++ placement->src_pix_height = cmd->src_pix_height;
++ placement->cols = cmd->columns;
++ placement->rows = cmd->rows;
++ placement->do_not_move_cursor = cmd->do_not_move_cursor;
++
++ if (placement->virtual) {
++ placement->scale_mode = SCALE_MODE_CONTAIN;
++ } else if (placement->cols && placement->rows) {
++ // For classic placements the default is to stretch the image if
++ // both cols and rows are specified.
++ placement->scale_mode = SCALE_MODE_FILL;
++ } else if (placement->cols || placement->rows) {
++ // But if only one of them is specified, the default is to
++ // contain.
++ placement->scale_mode = SCALE_MODE_CONTAIN;
++ } else {
++ // If none of them are specified, the default is to use the
++ // original size.
++ placement->scale_mode = SCALE_MODE_NONE;
++ }
++
++ // Display the placement unless it's virtual.
++ gr_display_nonvirtual_placement(placement);
++
++ // Report success.
++ gr_reportsuccess_cmd(cmd);
++}
++
++/// Information about what to delete.
++typedef struct DeletionData {
++ uint32_t image_id;
++ uint32_t placement_id;
++ /// If true, delete the image object if there are no more placements.
++ char delete_image_if_no_ref;
++} DeletionData;
++
++/// The callback called for each cell to perform deletion.
++static int gr_deletion_callback(void *data, uint32_t image_id,
++ uint32_t placement_id, int col,
++ int row, char is_classic) {
++ DeletionData *del_data = data;
++ // Leave unicode placeholders alone.
++ if (!is_classic)
++ return 0;
++ if (del_data->image_id && del_data->image_id != image_id)
++ return 0;
++ if (del_data->placement_id && del_data->placement_id != placement_id)
++ return 0;
++ Image *img = gr_find_image(image_id);
++ // If the image is already deleted, just erase the placeholder.
++ if (!img)
++ return 1;
++ // Delete the placement.
++ if (placement_id)
++ gr_delete_placement(gr_find_placement(img, placement_id));
++ // Delete the image if image deletion is requested (uppercase delete
++ // specifier) and there are no more placements.
++ if (del_data->delete_image_if_no_ref && kh_size(img->placements) == 0)
++ gr_delete_image(img);
++ return 1;
++}
++
++/// Handles the delete command.
++static void gr_handle_delete_command(GraphicsCommand *cmd) {
++ DeletionData del_data = {0};
++ del_data.delete_image_if_no_ref = isupper(cmd->delete_specifier) != 0;
++ char d = tolower(cmd->delete_specifier);
++
++ if (d == 'n') {
++ d = 'i';
++ Image *img = gr_find_image_by_number(cmd->image_number);
++ if (!img)
++ return;
++ del_data.image_id = img->image_id;
++ }
++
++ if (!d || d == 'a') {
++ // Delete all visible placements.
++ gr_for_each_image_cell(gr_deletion_callback, &del_data);
++ } else if (d == 'i') {
++ // Delete the specified image by image id and maybe placement
++ // id.
++ if (!del_data.image_id)
++ del_data.image_id = cmd->image_id;
++ if (!del_data.image_id) {
++ fprintf(stderr,
++ "ERROR: image id is not specified in the "
++ "delete command\n");
++ return;
++ }
++ del_data.placement_id = cmd->placement_id;
++ // NOTE: It's not very clear whether we should delete the image
++ // even if there are no _visible_ placements to delete. We do
++ // this because otherwise there is no way to delete an image
++ // with virtual placements in one command.
++ if (!del_data.placement_id && del_data.delete_image_if_no_ref)
++ gr_delete_image(gr_find_image(cmd->image_id));
++ gr_for_each_image_cell(gr_deletion_callback, &del_data);
++ } else {
++ fprintf(stderr,
++ "WARNING: unsupported value of the d key: '%c'. The "
++ "command is ignored.\n",
++ cmd->delete_specifier);
++ }
++}
++
++static void gr_handle_animation_control_command(GraphicsCommand *cmd) {
++ if (cmd->image_id == 0 && cmd->image_number == 0) {
++ gr_reporterror_cmd(cmd,
++ "EINVAL: neither image id nor image number "
++ "are specified or both are zero");
++ return;
++ }
++
++ // Find the image with the id or number.
++ Image *img = gr_find_image_for_command(cmd);
++ if (!img) {
++ gr_reporterror_cmd(cmd, "ENOENT: image not found");
++ return;
++ }
++
++ // Find the frame to edit, if requested.
++ ImageFrame *frame = NULL;
++ if (cmd->edit_frame)
++ frame = gr_get_frame(img, cmd->edit_frame);
++ if (cmd->edit_frame || cmd->gap) {
++ if (!frame) {
++ gr_reporterror_cmd(cmd, "ENOENT: frame %d not found",
++ cmd->edit_frame);
++ return;
++ }
++ if (cmd->gap) {
++ img->total_duration -= frame->gap;
++ frame->gap = cmd->gap;
++ img->total_duration += frame->gap;
++ }
++ }
++
++ // Set animation-related parameters of the image.
++ if (cmd->current_frame)
++ img->current_frame = cmd->current_frame;
++ if (cmd->animation_state) {
++ if (cmd->animation_state == 1) {
++ img->animation_state = ANIMATION_STATE_STOPPED;
++ } else if (cmd->animation_state == 2) {
++ img->animation_state = ANIMATION_STATE_LOADING;
++ } else if (cmd->animation_state == 3) {
++ img->animation_state = ANIMATION_STATE_LOOPING;
++ } else {
++ gr_reporterror_cmd(
++ cmd, "EINVAL: invalid animation state: %d",
++ cmd->animation_state);
++ }
++ }
++ // TODO: Set the number of loops to cmd->loops
++
++ // Make sure we redraw all instances of the image.
++ gr_schedule_image_redraw(img);
++}
++
++/// Handles a command.
++static void gr_handle_command(GraphicsCommand *cmd) {
++ if (!cmd->image_id && !cmd->image_number) {
++ // If there is no image id or image number, nobody expects a
++ // response, so set quiet to 2.
++ cmd->quiet = 2;
++ }
++ ImageFrame *frame = NULL;
++ switch (cmd->action) {
++ case 0:
++ // If no action is specified, it may be a data transmission
++ // command if 'm=' is specified.
++ if (cmd->is_data_transmission) {
++ gr_handle_transmit_command(cmd);
++ break;
++ }
++ gr_reporterror_cmd(cmd, "EINVAL: no action specified");
++ break;
++ case 't':
++ case 'q':
++ case 'f':
++ // Transmit data. 'q' means query, which is basically the same
++ // as transmit, but the image is discarded, and the id is fake.
++ // 'f' appends a frame to an existing image.
++ gr_handle_transmit_command(cmd);
++ break;
++ case 'p':
++ // Display (put) the image.
++ gr_handle_put_command(cmd);
++ break;
++ case 'T':
++ // Transmit and display.
++ frame = gr_handle_transmit_command(cmd);
++ if (frame && !cmd->is_direct_transmission_continuation) {
++ gr_handle_put_command(cmd);
++ if (cmd->placement_id)
++ frame->image->initial_placement_id =
++ cmd->placement_id;
++ }
++ break;
++ case 'd':
++ gr_handle_delete_command(cmd);
++ break;
++ case 'a':
++ gr_handle_animation_control_command(cmd);
++ break;
++ default:
++ gr_reporterror_cmd(cmd, "EINVAL: unsupported action: %c",
++ cmd->action);
++ return;
++ }
++}
++
++/// A partially parsed key-value pair.
++typedef struct KeyAndValue {
++ char *key_start;
++ char *val_start;
++ unsigned key_len, val_len;
++} KeyAndValue;
++
++/// Parses the value of a key and assigns it to the appropriate field of `cmd`.
++static void gr_set_keyvalue(GraphicsCommand *cmd, KeyAndValue *kv) {
++ char *key_start = kv->key_start;
++ char *key_end = key_start + kv->key_len;
++ char *value_start = kv->val_start;
++ char *value_end = value_start + kv->val_len;
++ // Currently all keys are one-character.
++ if (key_end - key_start != 1) {
++ gr_reporterror_cmd(cmd, "EINVAL: unknown key of length %ld: %s",
++ key_end - key_start, key_start);
++ return;
++ }
++ long num = 0;
++ if (*key_start == 'a' || *key_start == 't' || *key_start == 'd' ||
++ *key_start == 'o') {
++ // Some keys have one-character values.
++ if (value_end - value_start != 1) {
++ gr_reporterror_cmd(
++ cmd,
++ "EINVAL: value of 'a', 't' or 'd' must be a "
++ "single char: %s",
++ key_start);
++ return;
++ }
++ } else {
++ // All the other keys have integer values.
++ char *num_end = NULL;
++ num = strtol(value_start, &num_end, 10);
++ if (num_end != value_end) {
++ gr_reporterror_cmd(
++ cmd, "EINVAL: could not parse number value: %s",
++ key_start);
++ return;
++ }
++ }
++ switch (*key_start) {
++ case 'a':
++ cmd->action = *value_start;
++ break;
++ case 't':
++ cmd->transmission_medium = *value_start;
++ break;
++ case 'd':
++ cmd->delete_specifier = *value_start;
++ break;
++ case 'q':
++ cmd->quiet = num;
++ break;
++ case 'f':
++ cmd->format = num;
++ if (num != 0 && num != 24 && num != 32 && num != 100) {
++ gr_reporterror_cmd(
++ cmd,
++ "EINVAL: unsupported format specification: %s",
++ key_start);
++ }
++ break;
++ case 'o':
++ cmd->compression = *value_start;
++ if (cmd->compression != 'z') {
++ gr_reporterror_cmd(cmd,
++ "EINVAL: unsupported compression "
++ "specification: %s",
++ key_start);
++ }
++ break;
++ case 's':
++ if (cmd->action == 'a')
++ cmd->animation_state = num;
++ else
++ cmd->frame_pix_width = num;
++ break;
++ case 'v':
++ if (cmd->action == 'a')
++ cmd->loops = num;
++ else
++ cmd->frame_pix_height = num;
++ break;
++ case 'i':
++ cmd->image_id = num;
++ break;
++ case 'I':
++ cmd->image_number = num;
++ break;
++ case 'p':
++ cmd->placement_id = num;
++ break;
++ case 'x':
++ cmd->src_pix_x = num;
++ cmd->frame_dst_pix_x = num;
++ break;
++ case 'y':
++ if (cmd->action == 'f')
++ cmd->frame_dst_pix_y = num;
++ else
++ cmd->src_pix_y = num;
++ break;
++ case 'w':
++ cmd->src_pix_width = num;
++ break;
++ case 'h':
++ cmd->src_pix_height = num;
++ break;
++ case 'c':
++ if (cmd->action == 'f')
++ cmd->background_frame = num;
++ else if (cmd->action == 'a')
++ cmd->current_frame = num;
++ else
++ cmd->columns = num;
++ break;
++ case 'r':
++ if (cmd->action == 'f' || cmd->action == 'a')
++ cmd->edit_frame = num;
++ else
++ cmd->rows = num;
++ break;
++ case 'm':
++ cmd->is_data_transmission = 1;
++ cmd->more = num;
++ break;
++ case 'S':
++ cmd->size = num;
++ break;
++ case 'U':
++ cmd->virtual = num;
++ break;
++ case 'X':
++ if (cmd->action == 'f')
++ cmd->replace_instead_of_blending = num;
++ else
++ break; /*ignore*/
++ break;
++ case 'Y':
++ if (cmd->action == 'f')
++ cmd->background_color = num;
++ else
++ break; /*ignore*/
++ break;
++ case 'z':
++ if (cmd->action == 'f' || cmd->action == 'a')
++ cmd->gap = num;
++ else
++ break; /*ignore*/
++ break;
++ case 'C':
++ cmd->do_not_move_cursor = num;
++ break;
++ default:
++ gr_reporterror_cmd(cmd, "EINVAL: unsupported key: %s",
++ key_start);
++ return;
++ }
++}
++
++/// Parse and execute a graphics command. `buf` must start with 'G' and contain
++/// at least `len + 1` characters. Returns 1 on success.
++int gr_parse_command(char *buf, size_t len) {
++ if (buf[0] != 'G')
++ return 0;
++
++ memset(&graphics_command_result, 0, sizeof(GraphicsCommandResult));
++
++ global_command_counter++;
++ GR_LOG("### Command %lu: %.80s\n", global_command_counter, buf);
++
++ // Eat the 'G'.
++ ++buf;
++ --len;
++
++ GraphicsCommand cmd = {.command = buf};
++ // The state of parsing. 'k' to parse key, 'v' to parse value, 'p' to
++ // parse the payload.
++ char state = 'k';
++ // An array of partially parsed key-value pairs.
++ KeyAndValue key_vals[32];
++ unsigned key_vals_count = 0;
++ char *key_start = buf;
++ char *key_end = NULL;
++ char *val_start = NULL;
++ char *val_end = NULL;
++ char *c = buf;
++ while (c - buf < len + 1) {
++ if (state == 'k') {
++ switch (*c) {
++ case ',':
++ case ';':
++ case '\0':
++ state = *c == ',' ? 'k' : 'p';
++ key_end = c;
++ gr_reporterror_cmd(
++ &cmd, "EINVAL: key without value: %s ",
++ key_start);
++ break;
++ case '=':
++ key_end = c;
++ state = 'v';
++ val_start = c + 1;
++ break;
++ default:
++ break;
++ }
++ } else if (state == 'v') {
++ switch (*c) {
++ case ',':
++ case ';':
++ case '\0':
++ state = *c == ',' ? 'k' : 'p';
++ val_end = c;
++ if (key_vals_count >=
++ sizeof(key_vals) / sizeof(*key_vals)) {
++ gr_reporterror_cmd(&cmd,
++ "EINVAL: too many "
++ "key-value pairs");
++ break;
++ }
++ key_vals[key_vals_count].key_start = key_start;
++ key_vals[key_vals_count].val_start = val_start;
++ key_vals[key_vals_count].key_len =
++ key_end - key_start;
++ key_vals[key_vals_count].val_len =
++ val_end - val_start;
++ ++key_vals_count;
++ key_start = c + 1;
++ break;
++ default:
++ break;
++ }
++ } else if (state == 'p') {
++ cmd.payload = c;
++ // break out of the loop, we don't check the payload
++ break;
++ }
++ ++c;
++ }
++
++ // Set the action key ('a=') first because we need it to disambiguate
++ // some keys. Also set 'i=' and 'I=' for better error reporting.
++ for (unsigned i = 0; i < key_vals_count; ++i) {
++ if (key_vals[i].key_len == 1) {
++ char *start = key_vals[i].key_start;
++ if (*start == 'a' || *start == 'i' || *start == 'I') {
++ gr_set_keyvalue(&cmd, &key_vals[i]);
++ break;
++ }
++ }
++ }
++ // Set the rest of the keys.
++ for (unsigned i = 0; i < key_vals_count; ++i)
++ gr_set_keyvalue(&cmd, &key_vals[i]);
++
++ if (!cmd.payload)
++ cmd.payload = buf + len;
++
++ if (cmd.payload && cmd.payload[0])
++ GR_LOG(" payload size: %ld\n", strlen(cmd.payload));
++
++ if (!graphics_command_result.error)
++ gr_handle_command(&cmd);
++
++ if (graphics_debug_mode) {
++ fprintf(stderr, "Response: ");
++ for (const char *resp = graphics_command_result.response;
++ *resp != '\0'; ++resp) {
++ if (isprint(*resp))
++ fprintf(stderr, "%c", *resp);
++ else
++ fprintf(stderr, "(0x%x)", *resp);
++ }
++ fprintf(stderr, "\n");
++ }
++
++ // Make sure that we suppress response if needed. Usually cmd.quiet is
++ // taken into account when creating the response, but it's not very
++ // reliable in the current implementation.
++ if (cmd.quiet) {
++ if (!graphics_command_result.error || cmd.quiet >= 2)
++ graphics_command_result.response[0] = '\0';
++ }
++
++ return 1;
++}
++
++////////////////////////////////////////////////////////////////////////////////
++// base64 decoding part is basically copied from st.c
++////////////////////////////////////////////////////////////////////////////////
++
++static const char gr_base64_digits[] = {
++ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
++ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
++ 0, 0, 0, 0, 0, 0, 0, 0, 0, 62, 0, 0, 0, 63, 52, 53, 54,
++ 55, 56, 57, 58, 59, 60, 61, 0, 0, 0, -1, 0, 0, 0, 0, 1, 2,
++ 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19,
++ 20, 21, 22, 23, 24, 25, 0, 0, 0, 0, 0, 0, 26, 27, 28, 29, 30,
++ 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
++ 48, 49, 50, 51, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
++ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
++ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
++ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
++ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
++ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
++ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
++ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
++
++static char gr_base64_getc(const char **src) {
++ while (**src && !isprint(**src))
++ (*src)++;
++ return **src ? *((*src)++) : '='; /* emulate padding if string ends */
++}
++
++char *gr_base64dec(const char *src, size_t *size) {
++ size_t in_len = strlen(src);
++ char *result, *dst;
++
++ result = dst = malloc((in_len + 3) / 4 * 3 + 1);
++ while (*src) {
++ int a = gr_base64_digits[(unsigned char)gr_base64_getc(&src)];
++ int b = gr_base64_digits[(unsigned char)gr_base64_getc(&src)];
++ int c = gr_base64_digits[(unsigned char)gr_base64_getc(&src)];
++ int d = gr_base64_digits[(unsigned char)gr_base64_getc(&src)];
++
++ if (a == -1 || b == -1)
++ break;
++
++ *dst++ = (a << 2) | ((b & 0x30) >> 4);
++ if (c == -1)
++ break;
++ *dst++ = ((b & 0x0f) << 4) | ((c & 0x3c) >> 2);
++ if (d == -1)
++ break;
++ *dst++ = ((c & 0x03) << 6) | d;
++ }
++ *dst = '\0';
++ if (size) {
++ *size = dst - result;
++ }
++ return result;
++}
+diff --git a/graphics.h b/graphics.h
+new file mode 100644
+index 0000000..2e75dea
+--- /dev/null
++++ b/graphics.h
+@@ -0,0 +1,107 @@
++
++#include <stdint.h>
++#include <sys/types.h>
++#include <X11/Xlib.h>
++
++/// Initialize the graphics module.
++void gr_init(Display *disp, Visual *vis, Colormap cm);
++/// Deinitialize the graphics module.
++void gr_deinit();
++
++/// Add an image rectangle to a list if rectangles to draw. This function may
++/// actually draw some rectangles, or it may wait till more rectangles are
++/// appended. Must be called between `gr_start_drawing` and `gr_finish_drawing`.
++/// - `img_start_col..img_end_col` and `img_start_row..img_end_row` define the
++/// part of the image to draw (row/col indices are zero-based, ends are
++/// excluded).
++/// - `x_col` and `y_row` are the coordinates of the top-left corner of the
++/// image in the terminal grid.
++/// - `x_pix` and `y_pix` are the same but in pixels.
++/// - `reverse` indicates whether colors should be inverted.
++void gr_append_imagerect(Drawable buf, uint32_t image_id, uint32_t placement_id,
++ int img_start_col, int img_end_col, int img_start_row,
++ int img_end_row, int x_col, int y_row, int x_pix,
++ int y_pix, int cw, int ch, int reverse);
++/// Prepare for image drawing. `cw` and `ch` are dimensions of the cell.
++void gr_start_drawing(Drawable buf, int cw, int ch);
++/// Finish image drawing. This functions will draw all the rectangles left to
++/// draw.
++void gr_finish_drawing(Drawable buf);
++/// Mark rows containing animations as dirty if it's time to redraw them. Must
++/// be called right after `gr_start_drawing`.
++void gr_mark_dirty_animations(int *dirty, int rows);
++
++/// Parse and execute a graphics command. `buf` must start with 'G' and contain
++/// at least `len + 1` characters (including '\0'). Returns 1 on success.
++/// Additional informations is returned through `graphics_command_result`.
++int gr_parse_command(char *buf, size_t len);
++
++/// Executes `command` with the name of the file corresponding to `image_id` as
++/// the argument. Executes xmessage with an error message on failure.
++void gr_preview_image(uint32_t image_id, const char *command);
++
++/// Executes `<st> -e less <file>` where <file> is the name of a temporary file
++/// containing the information about an image and placement, and <st> is
++/// specified with `st_executable`.
++void gr_show_image_info(uint32_t image_id, uint32_t placement_id,
++ uint32_t imgcol, uint32_t imgrow,
++ char is_classic_placeholder, int32_t diacritic_count,
++ char *st_executable);
++
++/// Dumps the internal state (images and placements) to stderr.
++void gr_dump_state();
++
++/// Unloads images to reduce RAM usage.
++void gr_unload_images_to_reduce_ram();
++
++/// Executes `callback` for each image cell. `callback` may return 1 to erase
++/// the cell or 0 to keep it. This function is implemented in `st.c`.
++void gr_for_each_image_cell(int (*callback)(void *data, uint32_t image_id,
++ uint32_t placement_id, int col,
++ int row, char is_classic),
++ void *data);
++
++/// Marks all the rows containing the image with `image_id` as dirty.
++void gr_schedule_image_redraw_by_id(uint32_t image_id);
++
++typedef enum {
++ GRAPHICS_DEBUG_NONE = 0,
++ GRAPHICS_DEBUG_LOG = 1,
++ GRAPHICS_DEBUG_LOG_AND_BOXES = 2,
++} GraphicsDebugMode;
++
++/// Print additional information, draw bounding bounding boxes, etc.
++extern GraphicsDebugMode graphics_debug_mode;
++
++/// Whether to display images or just draw bounding boxes.
++extern char graphics_display_images;
++
++/// The time in milliseconds until the next redraw to update animations.
++/// INT_MAX means no redraw is needed. Populated by `gr_finish_drawing`.
++extern int graphics_next_redraw_delay;
++
++#define MAX_GRAPHICS_RESPONSE_LEN 256
++
++/// A structure representing the result of a graphics command.
++typedef struct {
++ /// Indicates if the terminal needs to be redrawn.
++ char redraw;
++ /// The response of the command that should be sent back to the client
++ /// (may be empty if the quiet flag is set).
++ char response[MAX_GRAPHICS_RESPONSE_LEN];
++ /// Whether there was an error executing this command (not very useful,
++ /// the response must be sent back anyway).
++ char error;
++ /// Whether the terminal has to create a placeholder for a non-virtual
++ /// placement.
++ char create_placeholder;
++ /// The placeholder that needs to be created.
++ struct {
++ uint32_t rows, columns;
++ uint32_t image_id, placement_id;
++ char do_not_move_cursor;
++ } placeholder;
++} GraphicsCommandResult;
++
++/// The result of a graphics command.
++extern GraphicsCommandResult graphics_command_result;
+diff --git a/icat-mini.sh b/icat-mini.sh
+new file mode 100755
+index 0000000..0a8ebab
+--- /dev/null
++++ b/icat-mini.sh
+@@ -0,0 +1,801 @@
++#!/bin/sh
++
++# vim: shiftwidth=4
++
++script_name="$(basename "$0")"
++
++short_help="Usage: $script_name [OPTIONS] <image_file>
++
++This is a script to display images in the terminal using the kitty graphics
++protocol with Unicode placeholders. It is very basic, please use something else
++if you have alternatives.
++
++Options:
++ -h Show this help.
++ -s SCALE The scale of the image, may be floating point.
++ -c N, --cols N The number of columns.
++ -r N, --rows N The number of rows.
++ --max-cols N The maximum number of columns.
++ --max-rows N The maximum number of rows.
++ --cell-size WxH The cell size in pixels.
++ -m METHOD The uploading method, may be 'file', 'direct' or 'auto'.
++ --speed SPEED The multiplier for the animation speed (float).
++"
++
++# Exit the script on keyboard interrupt
++trap "echo 'icat-mini was interrupted' >&2; exit 1" INT
++
++cols=""
++rows=""
++file=""
++tty="/dev/tty"
++uploading_method="auto"
++cell_size=""
++scale=1
++max_cols=""
++max_rows=""
++speed=""
++
++# Parse the command line.
++while [ $# -gt 0 ]; do
++ case "$1" in
++ -c|--columns|--cols)
++ cols="$2"
++ shift 2
++ ;;
++ -r|--rows|-l|--lines)
++ rows="$2"
++ shift 2
++ ;;
++ -s|--scale)
++ scale="$2"
++ shift 2
++ ;;
++ -h|--help)
++ echo "$short_help"
++ exit 0
++ ;;
++ -m|--upload-method|--uploading-method)
++ uploading_method="$2"
++ shift 2
++ ;;
++ --cell-size)
++ cell_size="$2"
++ shift 2
++ ;;
++ --max-cols)
++ max_cols="$2"
++ shift 2
++ ;;
++ --max-rows)
++ max_rows="$2"
++ shift 2
++ ;;
++ --speed)
++ speed="$2"
++ shift 2
++ ;;
++ --)
++ file="$2"
++ shift 2
++ ;;
++ -*)
++ echo "Unknown option: $1" >&2
++ exit 1
++ ;;
++ *)
++ if [ -n "$file" ]; then
++ echo "Multiple image files are not supported: $file and $1" >&2
++ exit 1
++ fi
++ file="$1"
++ shift
++ ;;
++ esac
++done
++
++file="$(realpath "$file")"
++
++#####################################################################
++# Adjust the terminal state
++#####################################################################
++
++stty_orig="$(stty -g < "$tty")"
++stty -echo < "$tty"
++# Disable ctrl-z. Pressing ctrl-z during image uploading may cause some
++# horrible issues otherwise.
++stty susp undef < "$tty"
++stty -icanon < "$tty"
++
++restore_echo() {
++ [ -n "$stty_orig" ] || return
++ stty $stty_orig < "$tty"
++}
++
++trap restore_echo EXIT TERM
++
++#####################################################################
++# Detect imagemagick
++#####################################################################
++
++# If there is the 'magick' command, use it instead of separate 'convert' and
++# 'identify' commands.
++if command -v magick > /dev/null; then
++ identify="magick identify"
++ convert="magick"
++else
++ identify="identify"
++ convert="convert"
++fi
++
++#####################################################################
++# Detect tmux
++#####################################################################
++
++# Check if we are inside tmux.
++inside_tmux=""
++if [ -n "$TMUX" ]; then
++ case "$TERM" in
++ *tmux*|*screen*)
++ inside_tmux=1
++ ;;
++ esac
++fi
++
++#####################################################################
++# Compute the number of rows and columns
++#####################################################################
++
++is_pos_int() {
++ if [ -z "$1" ]; then
++ return 1 # false
++ fi
++ if [ -z "$(printf '%s' "$1" | tr -d '[:digit:]')" ]; then
++ if [ "$1" -gt 0 ]; then
++ return 0 # true
++ fi
++ fi
++ return 1 # false
++}
++
++if [ -n "$cols" ] || [ -n "$rows" ]; then
++ if [ -n "$max_cols" ] || [ -n "$max_rows" ]; then
++ echo "You can't specify both max-cols/rows and cols/rows" >&2
++ exit 1
++ fi
++fi
++
++# Get the max number of cols and rows.
++[ -n "$max_cols" ] || max_cols="$(tput cols)"
++[ -n "$max_rows" ] || max_rows="$(tput lines)"
++if [ "$max_rows" -gt 255 ]; then
++ max_rows=255
++fi
++
++python_ioctl_command="import array, fcntl, termios
++buf = array.array('H', [0, 0, 0, 0])
++fcntl.ioctl(0, termios.TIOCGWINSZ, buf)
++print(int(buf[2]/buf[1]), int(buf[3]/buf[0]))"
++
++# Get the cell size in pixels if either cols or rows are not specified.
++if [ -z "$cols" ] || [ -z "$rows" ]; then
++ cell_width=""
++ cell_height=""
++ # If the cell size is specified, use it.
++ if [ -n "$cell_size" ]; then
++ cell_width="${cell_size%x*}"
++ cell_height="${cell_size#*x}"
++ if ! is_pos_int "$cell_height" || ! is_pos_int "$cell_width"; then
++ echo "Invalid cell size: $cell_size" >&2
++ exit 1
++ fi
++ fi
++ # Otherwise try to use TIOCGWINSZ ioctl via python.
++ if [ -z "$cell_width" ] || [ -z "$cell_height" ]; then
++ cell_size_ioctl="$(python3 -c "$python_ioctl_command" < "$tty" 2> /dev/null)"
++ cell_width="${cell_size_ioctl% *}"
++ cell_height="${cell_size_ioctl#* }"
++ if ! is_pos_int "$cell_height" || ! is_pos_int "$cell_width"; then
++ cell_width=""
++ cell_height=""
++ fi
++ fi
++ # If it didn't work, try to use csi XTWINOPS.
++ if [ -z "$cell_width" ] || [ -z "$cell_height" ]; then
++ if [ -n "$inside_tmux" ]; then
++ printf '\ePtmux;\e\e[16t\e\\' >> "$tty"
++ else
++ printf '\e[16t' >> "$tty"
++ fi
++ # The expected response will look like ^[[6;<height>;<width>t
++ term_response=""
++ while true; do
++ char=$(dd bs=1 count=1 <"$tty" 2>/dev/null)
++ if [ "$char" = "t" ]; then
++ break
++ fi
++ term_response="$term_response$char"
++ done
++ cell_height="$(printf '%s' "$term_response" | cut -d ';' -f 2)"
++ cell_width="$(printf '%s' "$term_response" | cut -d ';' -f 3)"
++ if ! is_pos_int "$cell_height" || ! is_pos_int "$cell_width"; then
++ cell_width=8
++ cell_height=16
++ fi
++ fi
++fi
++
++# Compute a formula with bc and round to the nearest integer.
++bc_round() {
++ LC_NUMERIC=C printf '%.0f' "$(printf '%s\n' "scale=2;($1) + 0.5" | bc)"
++}
++
++# Compute the number of rows and columns of the image.
++if [ -z "$cols" ] || [ -z "$rows" ]; then
++ # Get the size of the image and its resolution. If it's an animation, use
++ # the first frame.
++ format_output="$($identify -format '%w %h\n' "$file" | head -1)"
++ img_width="$(printf '%s' "$format_output" | cut -d ' ' -f 1)"
++ img_height="$(printf '%s' "$format_output" | cut -d ' ' -f 2)"
++ if ! is_pos_int "$img_width" || ! is_pos_int "$img_height"; then
++ echo "Couldn't get image size from identify: $format_output" >&2
++ echo >&2
++ exit 1
++ fi
++ opt_cols_expr="(${scale}*${img_width}/${cell_width})"
++ opt_rows_expr="(${scale}*${img_height}/${cell_height})"
++ if [ -z "$cols" ] && [ -z "$rows" ]; then
++ # If columns and rows are not specified, compute the optimal values
++ # using the information about rows and columns per inch.
++ cols="$(bc_round "$opt_cols_expr")"
++ rows="$(bc_round "$opt_rows_expr")"
++ # Make sure that automatically computed rows and columns are within some
++ # sane limits
++ if [ "$cols" -gt "$max_cols" ]; then
++ rows="$(bc_round "$rows * $max_cols / $cols")"
++ cols="$max_cols"
++ fi
++ if [ "$rows" -gt "$max_rows" ]; then
++ cols="$(bc_round "$cols * $max_rows / $rows")"
++ rows="$max_rows"
++ fi
++ elif [ -z "$cols" ]; then
++ # If only one dimension is specified, compute the other one to match the
++ # aspect ratio as close as possible.
++ cols="$(bc_round "${opt_cols_expr}*${rows}/${opt_rows_expr}")"
++ elif [ -z "$rows" ]; then
++ rows="$(bc_round "${opt_rows_expr}*${cols}/${opt_cols_expr}")"
++ fi
++
++ if [ "$cols" -lt 1 ]; then
++ cols=1
++ fi
++ if [ "$rows" -lt 1 ]; then
++ rows=1
++ fi
++fi
++
++#####################################################################
++# Generate an image id
++#####################################################################
++
++image_id=""
++while [ -z "$image_id" ]; do
++ image_id="$(shuf -i 16777217-4294967295 -n 1)"
++ # Check that the id requires 24-bit fg colors.
++ if [ "$(expr \( "$image_id" / 256 \) % 65536)" -eq 0 ]; then
++ image_id=""
++ fi
++done
++
++#####################################################################
++# Uploading the image
++#####################################################################
++
++# Choose the uploading method
++if [ "$uploading_method" = "auto" ]; then
++ if [ -n "$SSH_CLIENT" ] || [ -n "$SSH_TTY" ] || [ -n "$SSH_CONNECTION" ]; then
++ uploading_method="direct"
++ else
++ uploading_method="file"
++ fi
++fi
++
++# Functions to emit the start and the end of a graphics command.
++if [ -n "$inside_tmux" ]; then
++ # If we are in tmux we have to wrap the command in Ptmux.
++ graphics_command_start='\ePtmux;\e\e_G'
++ graphics_command_end='\e\e\\\e\\'
++else
++ graphics_command_start='\e_G'
++ graphics_command_end='\e\\'
++fi
++
++start_gr_command() {
++ printf "$graphics_command_start" >> "$tty"
++}
++end_gr_command() {
++ printf "$graphics_command_end" >> "$tty"
++}
++
++# Send a graphics command with the correct start and end
++gr_command() {
++ start_gr_command
++ printf '%s' "$1" >> "$tty"
++ end_gr_command
++}
++
++# Send an uploading command. Usage: gr_upload <action> <command> <file>
++# Where <action> is a part of command that specifies the action, it will be
++# repeated for every chunk (if the method is direct), and <command> is the rest
++# of the command that specifies the image parameters. <action> and <command>
++# must not include the transmission method or ';'.
++# Example:
++# gr_upload "a=T,q=2" "U=1,i=${image_id},f=100,c=${cols},r=${rows}" "$file"
++gr_upload() {
++ arg_action="$1"
++ arg_command="$2"
++ arg_file="$3"
++ if [ "$uploading_method" = "file" ]; then
++ # base64-encode the filename
++ encoded_filename=$(printf '%s' "$arg_file" | base64 -w0)
++ gr_command "${arg_action},${arg_command},t=f;${encoded_filename}"
++ fi
++ if [ "$uploading_method" = "direct" ]; then
++ # Create a temporary directory to store the chunked image.
++ chunkdir="$(mktemp -d)"
++ if [ ! "$chunkdir" ] || [ ! -d "$chunkdir" ]; then
++ echo "Can't create a temp dir" >&2
++ exit 1
++ fi
++ # base64-encode the file and split it into chunks. The size of each
++ # graphics command shouldn't be more than 4096, so we set the size of an
++ # encoded chunk to be 3968, slightly less than that.
++ chunk_size=3968
++ cat "$arg_file" | base64 -w0 | split -b "$chunk_size" - "$chunkdir/chunk_"
++
++ # Issue a command indicating that we want to start data transmission for
++ # a new image.
++ gr_command "${arg_action},${arg_command},t=d,m=1"
++
++ # Transmit chunks.
++ for chunk in "$chunkdir/chunk_"*; do
++ start_gr_command
++ printf '%s' "${arg_action},i=${image_id},m=1;" >> "$tty"
++ cat "$chunk" >> "$tty"
++ end_gr_command
++ rm "$chunk"
++ done
++
++ # Tell the terminal that we are done.
++ gr_command "${arg_action},i=$image_id,m=0"
++
++ # Remove the temporary directory.
++ rmdir "$chunkdir"
++ fi
++}
++
++delayed_frame_dir_cleanup() {
++ arg_frame_dir="$1"
++ sleep 2
++ if [ -n "$arg_frame_dir" ]; then
++ for frame in "$arg_frame_dir"/frame_*.png; do
++ rm "$frame"
++ done
++ rmdir "$arg_frame_dir"
++ fi
++}
++
++upload_image_and_print_placeholder() {
++ # Check if the file is an animation.
++ frame_count=$($identify -format '%n\n' "$file" | head -n 1)
++ if [ "$frame_count" -gt 1 ]; then
++ # The file is an animation, decompose into frames and upload each frame.
++ frame_dir="$(mktemp -d)"
++ frame_dir="$HOME/temp/frames${frame_dir}"
++ mkdir -p "$frame_dir"
++ if [ ! "$frame_dir" ] || [ ! -d "$frame_dir" ]; then
++ echo "Can't create a temp dir for frames" >&2
++ exit 1
++ fi
++
++ # Decompose the animation into separate frames.
++ $convert "$file" -coalesce "$frame_dir/frame_%06d.png"
++
++ # Get all frame delays at once, in centiseconds, as a space-separated
++ # string.
++ delays=$($identify -format "%T " "$file")
++
++ frame_number=1
++ for frame in "$frame_dir"/frame_*.png; do
++ # Read the delay for the current frame and convert it from
++ # centiseconds to milliseconds.
++ delay=$(printf '%s' "$delays" | cut -d ' ' -f "$frame_number")
++ delay=$((delay * 10))
++ # If the delay is 0, set it to 100ms.
++ if [ "$delay" -eq 0 ]; then
++ delay=100
++ fi
++
++ if [ -n "$speed" ]; then
++ delay=$(bc_round "$delay / $speed")
++ fi
++
++ if [ "$frame_number" -eq 1 ]; then
++ # Upload the first frame with a=T
++ gr_upload "q=2,a=T" "f=100,U=1,i=${image_id},c=${cols},r=${rows}" "$frame"
++ # Set the delay for the first frame and also play the animation
++ # in loading mode (s=2).
++ gr_command "a=a,v=1,s=2,r=${frame_number},z=${delay},i=${image_id}"
++ # Print the placeholder after the first frame to reduce the wait
++ # time.
++ print_placeholder
++ else
++ # Upload subsequent frames with a=f
++ gr_upload "q=2,a=f" "f=100,i=${image_id},z=${delay}" "$frame"
++ fi
++
++ frame_number=$((frame_number + 1))
++ done
++
++ # Play the animation in loop mode (s=3).
++ gr_command "a=a,v=1,s=3,i=${image_id}"
++
++ # Remove the temporary directory, but do it in the background with a
++ # delay to avoid removing files before they are loaded by the terminal.
++ delayed_frame_dir_cleanup "$frame_dir" 2> /dev/null &
++ else
++ # The file is not an animation, upload it directly
++ gr_upload "q=2,a=T" "U=1,i=${image_id},f=100,c=${cols},r=${rows}" "$file"
++ # Print the placeholder
++ print_placeholder
++ fi
++}
++
++#####################################################################
++# Printing the image placeholder
++#####################################################################
++
++print_placeholder() {
++ # Each line starts with the escape sequence to set the foreground color to
++ # the image id.
++ blue="$(expr "$image_id" % 256 )"
++ green="$(expr \( "$image_id" / 256 \) % 256 )"
++ red="$(expr \( "$image_id" / 65536 \) % 256 )"
++ line_start="$(printf "\e[38;2;%d;%d;%dm" "$red" "$green" "$blue")"
++ line_end="$(printf "\e[39;m")"
++
++ id4th="$(expr \( "$image_id" / 16777216 \) % 256 )"
++ eval "id_diacritic=\$d${id4th}"
++
++ # Reset the brush state, mostly to reset the underline color.
++ printf "\e[0m"
++
++ # Fill the output with characters representing the image
++ for y in $(seq 0 "$(expr "$rows" - 1)"); do
++ eval "row_diacritic=\$d${y}"
++ printf '%s' "$line_start"
++ for x in $(seq 0 "$(expr "$cols" - 1)"); do
++ eval "col_diacritic=\$d${x}"
++ # Note that when $x is out of bounds, the column diacritic will
++ # be empty, meaning that the column should be guessed by the
++ # terminal.
++ if [ "$x" -ge "$num_diacritics" ]; then
++ printf '%s' "${placeholder}${row_diacritic}"
++ else
++ printf '%s' "${placeholder}${row_diacritic}${col_diacritic}${id_diacritic}"
++ fi
++ done
++ printf '%s\n' "$line_end"
++ done
++
++ printf "\e[0m"
++}
++
++d0="̅"
++d1="̍"
++d2="̎"
++d3="̐"
++d4="̒"
++d5="̽"
++d6="̾"
++d7="̿"
++d8="͆"
++d9="͊"
++d10="͋"
++d11="͌"
++d12="͐"
++d13="͑"
++d14="͒"
++d15="͗"
++d16="͛"
++d17="ͣ"
++d18="ͤ"
++d19="ͥ"
++d20="ͦ"
++d21="ͧ"
++d22="ͨ"
++d23="ͩ"
++d24="ͪ"
++d25="ͫ"
++d26="ͬ"
++d27="ͭ"
++d28="ͮ"
++d29="ͯ"
++d30="҃"
++d31="҄"
++d32="҅"
++d33="҆"
++d34="҇"
++d35="֒"
++d36="֓"
++d37="֔"
++d38="֕"
++d39="֗"
++d40="֘"
++d41="֙"
++d42="֜"
++d43="֝"
++d44="֞"
++d45="֟"
++d46="֠"
++d47="֡"
++d48="֨"
++d49="֩"
++d50="֫"
++d51="֬"
++d52="֯"
++d53="ׄ"
++d54="ؐ"
++d55="ؑ"
++d56="ؒ"
++d57="ؓ"
++d58="ؔ"
++d59="ؕ"
++d60="ؖ"
++d61="ؗ"
++d62="ٗ"
++d63="٘"
++d64="ٙ"
++d65="ٚ"
++d66="ٛ"
++d67="ٝ"
++d68="ٞ"
++d69="ۖ"
++d70="ۗ"
++d71="ۘ"
++d72="ۙ"
++d73="ۚ"
++d74="ۛ"
++d75="ۜ"
++d76="۟"
++d77="۠"
++d78="ۡ"
++d79="ۢ"
++d80="ۤ"
++d81="ۧ"
++d82="ۨ"
++d83="۫"
++d84="۬"
++d85="ܰ"
++d86="ܲ"
++d87="ܳ"
++d88="ܵ"
++d89="ܶ"
++d90="ܺ"
++d91="ܽ"
++d92="ܿ"
++d93="݀"
++d94="݁"
++d95="݃"
++d96="݅"
++d97="݇"
++d98="݉"
++d99="݊"
++d100="߫"
++d101="߬"
++d102="߭"
++d103="߮"
++d104="߯"
++d105="߰"
++d106="߱"
++d107="߳"
++d108="ࠖ"
++d109="ࠗ"
++d110="࠘"
++d111="࠙"
++d112="ࠛ"
++d113="ࠜ"
++d114="ࠝ"
++d115="ࠞ"
++d116="ࠟ"
++d117="ࠠ"
++d118="ࠡ"
++d119="ࠢ"
++d120="ࠣ"
++d121="ࠥ"
++d122="ࠦ"
++d123="ࠧ"
++d124="ࠩ"
++d125="ࠪ"
++d126="ࠫ"
++d127="ࠬ"
++d128="࠭"
++d129="॑"
++d130="॓"
++d131="॔"
++d132="ྂ"
++d133="ྃ"
++d134="྆"
++d135="྇"
++d136="፝"
++d137="፞"
++d138="፟"
++d139="៝"
++d140="᤺"
++d141="ᨗ"
++d142="᩵"
++d143="᩶"
++d144="᩷"
++d145="᩸"
++d146="᩹"
++d147="᩺"
++d148="᩻"
++d149="᩼"
++d150="᭫"
++d151="᭭"
++d152="᭮"
++d153="᭯"
++d154="᭰"
++d155="᭱"
++d156="᭲"
++d157="᭳"
++d158="᳐"
++d159="᳑"
++d160="᳒"
++d161="᳚"
++d162="᳛"
++d163="᳠"
++d164="᷀"
++d165="᷁"
++d166="᷃"
++d167="᷄"
++d168="᷅"
++d169="᷆"
++d170="᷇"
++d171="᷈"
++d172="᷉"
++d173="᷋"
++d174="᷌"
++d175="᷑"
++d176="᷒"
++d177="ᷓ"
++d178="ᷔ"
++d179="ᷕ"
++d180="ᷖ"
++d181="ᷗ"
++d182="ᷘ"
++d183="ᷙ"
++d184="ᷚ"
++d185="ᷛ"
++d186="ᷜ"
++d187="ᷝ"
++d188="ᷞ"
++d189="ᷟ"
++d190="ᷠ"
++d191="ᷡ"
++d192="ᷢ"
++d193="ᷣ"
++d194="ᷤ"
++d195="ᷥ"
++d196="ᷦ"
++d197="᷾"
++d198="⃐"
++d199="⃑"
++d200="⃔"
++d201="⃕"
++d202="⃖"
++d203="⃗"
++d204="⃛"
++d205="⃜"
++d206="⃡"
++d207="⃧"
++d208="⃩"
++d209="⃰"
++d210="⳯"
++d211="⳰"
++d212="⳱"
++d213="ⷠ"
++d214="ⷡ"
++d215="ⷢ"
++d216="ⷣ"
++d217="ⷤ"
++d218="ⷥ"
++d219="ⷦ"
++d220="ⷧ"
++d221="ⷨ"
++d222="ⷩ"
++d223="ⷪ"
++d224="ⷫ"
++d225="ⷬ"
++d226="ⷭ"
++d227="ⷮ"
++d228="ⷯ"
++d229="ⷰ"
++d230="ⷱ"
++d231="ⷲ"
++d232="ⷳ"
++d233="ⷴ"
++d234="ⷵ"
++d235="ⷶ"
++d236="ⷷ"
++d237="ⷸ"
++d238="ⷹ"
++d239="ⷺ"
++d240="ⷻ"
++d241="ⷼ"
++d242="ⷽ"
++d243="ⷾ"
++d244="ⷿ"
++d245="꙯"
++d246="꙼"
++d247="꙽"
++d248="꛰"
++d249="꛱"
++d250="꣠"
++d251="꣡"
++d252="꣢"
++d253="꣣"
++d254="꣤"
++d255="꣥"
++d256="꣦"
++d257="꣧"
++d258="꣨"
++d259="꣩"
++d260="꣪"
++d261="꣫"
++d262="꣬"
++d263="꣭"
++d264="꣮"
++d265="꣯"
++d266="꣰"
++d267="꣱"
++d268="ꪰ"
++d269="ꪲ"
++d270="ꪳ"
++d271="ꪷ"
++d272="ꪸ"
++d273="ꪾ"
++d274="꪿"
++d275="꫁"
++d276="︠"
++d277="︡"
++d278="︢"
++d279="︣"
++d280="︤"
++d281="︥"
++d282="︦"
++d283="𐨏"
++d284="𐨸"
++d285="𝆅"
++d286="𝆆"
++d287="𝆇"
++d288="𝆈"
++d289="𝆉"
++d290="𝆪"
++d291="𝆫"
++d292="𝆬"
++d293="𝆭"
++d294="𝉂"
++d295="𝉃"
++d296="𝉄"
++
++num_diacritics="297"
++
++placeholder=""
++
++#####################################################################
++# Upload the image and print the placeholder
++#####################################################################
++
++upload_image_and_print_placeholder
+diff --git a/khash.h b/khash.h
+new file mode 100644
+index 0000000..f75f347
+--- /dev/null
++++ b/khash.h
+@@ -0,0 +1,627 @@
++/* The MIT License
++
++ Copyright (c) 2008, 2009, 2011 by Attractive Chaos <attractor@live.co.uk>
++
++ Permission is hereby granted, free of charge, to any person obtaining
++ a copy of this software and associated documentation files (the
++ "Software"), to deal in the Software without restriction, including
++ without limitation the rights to use, copy, modify, merge, publish,
++ distribute, sublicense, and/or sell copies of the Software, and to
++ permit persons to whom the Software is furnished to do so, subject to
++ the following conditions:
++
++ The above copyright notice and this permission notice shall be
++ included in all copies or substantial portions of the Software.
++
++ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
++ EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
++ MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
++ NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
++ BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
++ ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
++ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
++ SOFTWARE.
++*/
++
++/*
++ An example:
++
++#include "khash.h"
++KHASH_MAP_INIT_INT(32, char)
++int main() {
++ int ret, is_missing;
++ khiter_t k;
++ khash_t(32) *h = kh_init(32);
++ k = kh_put(32, h, 5, &ret);
++ kh_value(h, k) = 10;
++ k = kh_get(32, h, 10);
++ is_missing = (k == kh_end(h));
++ k = kh_get(32, h, 5);
++ kh_del(32, h, k);
++ for (k = kh_begin(h); k != kh_end(h); ++k)
++ if (kh_exist(h, k)) kh_value(h, k) = 1;
++ kh_destroy(32, h);
++ return 0;
++}
++*/
++
++/*
++ 2013-05-02 (0.2.8):
++
++ * Use quadratic probing. When the capacity is power of 2, stepping function
++ i*(i+1)/2 guarantees to traverse each bucket. It is better than double
++ hashing on cache performance and is more robust than linear probing.
++
++ In theory, double hashing should be more robust than quadratic probing.
++ However, my implementation is probably not for large hash tables, because
++ the second hash function is closely tied to the first hash function,
++ which reduce the effectiveness of double hashing.
++
++ Reference: http://research.cs.vt.edu/AVresearch/hashing/quadratic.php
++
++ 2011-12-29 (0.2.7):
++
++ * Minor code clean up; no actual effect.
++
++ 2011-09-16 (0.2.6):
++
++ * The capacity is a power of 2. This seems to dramatically improve the
++ speed for simple keys. Thank Zilong Tan for the suggestion. Reference:
++
++ - http://code.google.com/p/ulib/
++ - http://nothings.org/computer/judy/
++
++ * Allow to optionally use linear probing which usually has better
++ performance for random input. Double hashing is still the default as it
++ is more robust to certain non-random input.
++
++ * Added Wang's integer hash function (not used by default). This hash
++ function is more robust to certain non-random input.
++
++ 2011-02-14 (0.2.5):
++
++ * Allow to declare global functions.
++
++ 2009-09-26 (0.2.4):
++
++ * Improve portability
++
++ 2008-09-19 (0.2.3):
++
++ * Corrected the example
++ * Improved interfaces
++
++ 2008-09-11 (0.2.2):
++
++ * Improved speed a little in kh_put()
++
++ 2008-09-10 (0.2.1):
++
++ * Added kh_clear()
++ * Fixed a compiling error
++
++ 2008-09-02 (0.2.0):
++
++ * Changed to token concatenation which increases flexibility.
++
++ 2008-08-31 (0.1.2):
++
++ * Fixed a bug in kh_get(), which has not been tested previously.
++
++ 2008-08-31 (0.1.1):
++
++ * Added destructor
++*/
++
++
++#ifndef __AC_KHASH_H
++#define __AC_KHASH_H
++
++/*!
++ @header
++
++ Generic hash table library.
++ */
++
++#define AC_VERSION_KHASH_H "0.2.8"
++
++#include <stdlib.h>
++#include <string.h>
++#include <limits.h>
++
++/* compiler specific configuration */
++
++#if UINT_MAX == 0xffffffffu
++typedef unsigned int khint32_t;
++#elif ULONG_MAX == 0xffffffffu
++typedef unsigned long khint32_t;
++#endif
++
++#if ULONG_MAX == ULLONG_MAX
++typedef unsigned long khint64_t;
++#else
++typedef unsigned long long khint64_t;
++#endif
++
++#ifndef kh_inline
++#ifdef _MSC_VER
++#define kh_inline __inline
++#else
++#define kh_inline inline
++#endif
++#endif /* kh_inline */
++
++#ifndef klib_unused
++#if (defined __clang__ && __clang_major__ >= 3) || (defined __GNUC__ && __GNUC__ >= 3)
++#define klib_unused __attribute__ ((__unused__))
++#else
++#define klib_unused
++#endif
++#endif /* klib_unused */
++
++typedef khint32_t khint_t;
++typedef khint_t khiter_t;
++
++#define __ac_isempty(flag, i) ((flag[i>>4]>>((i&0xfU)<<1))&2)
++#define __ac_isdel(flag, i) ((flag[i>>4]>>((i&0xfU)<<1))&1)
++#define __ac_iseither(flag, i) ((flag[i>>4]>>((i&0xfU)<<1))&3)
++#define __ac_set_isdel_false(flag, i) (flag[i>>4]&=~(1ul<<((i&0xfU)<<1)))
++#define __ac_set_isempty_false(flag, i) (flag[i>>4]&=~(2ul<<((i&0xfU)<<1)))
++#define __ac_set_isboth_false(flag, i) (flag[i>>4]&=~(3ul<<((i&0xfU)<<1)))
++#define __ac_set_isdel_true(flag, i) (flag[i>>4]|=1ul<<((i&0xfU)<<1))
++
++#define __ac_fsize(m) ((m) < 16? 1 : (m)>>4)
++
++#ifndef kroundup32
++#define kroundup32(x) (--(x), (x)|=(x)>>1, (x)|=(x)>>2, (x)|=(x)>>4, (x)|=(x)>>8, (x)|=(x)>>16, ++(x))
++#endif
++
++#ifndef kcalloc
++#define kcalloc(N,Z) calloc(N,Z)
++#endif
++#ifndef kmalloc
++#define kmalloc(Z) malloc(Z)
++#endif
++#ifndef krealloc
++#define krealloc(P,Z) realloc(P,Z)
++#endif
++#ifndef kfree
++#define kfree(P) free(P)
++#endif
++
++static const double __ac_HASH_UPPER = 0.77;
++
++#define __KHASH_TYPE(name, khkey_t, khval_t) \
++ typedef struct kh_##name##_s { \
++ khint_t n_buckets, size, n_occupied, upper_bound; \
++ khint32_t *flags; \
++ khkey_t *keys; \
++ khval_t *vals; \
++ } kh_##name##_t;
++
++#define __KHASH_PROTOTYPES(name, khkey_t, khval_t) \
++ extern kh_##name##_t *kh_init_##name(void); \
++ extern void kh_destroy_##name(kh_##name##_t *h); \
++ extern void kh_clear_##name(kh_##name##_t *h); \
++ extern khint_t kh_get_##name(const kh_##name##_t *h, khkey_t key); \
++ extern int kh_resize_##name(kh_##name##_t *h, khint_t new_n_buckets); \
++ extern khint_t kh_put_##name(kh_##name##_t *h, khkey_t key, int *ret); \
++ extern void kh_del_##name(kh_##name##_t *h, khint_t x);
++
++#define __KHASH_IMPL(name, SCOPE, khkey_t, khval_t, kh_is_map, __hash_func, __hash_equal) \
++ SCOPE kh_##name##_t *kh_init_##name(void) { \
++ return (kh_##name##_t*)kcalloc(1, sizeof(kh_##name##_t)); \
++ } \
++ SCOPE void kh_destroy_##name(kh_##name##_t *h) \
++ { \
++ if (h) { \
++ kfree((void *)h->keys); kfree(h->flags); \
++ kfree((void *)h->vals); \
++ kfree(h); \
++ } \
++ } \
++ SCOPE void kh_clear_##name(kh_##name##_t *h) \
++ { \
++ if (h && h->flags) { \
++ memset(h->flags, 0xaa, __ac_fsize(h->n_buckets) * sizeof(khint32_t)); \
++ h->size = h->n_occupied = 0; \
++ } \
++ } \
++ SCOPE khint_t kh_get_##name(const kh_##name##_t *h, khkey_t key) \
++ { \
++ if (h->n_buckets) { \
++ khint_t k, i, last, mask, step = 0; \
++ mask = h->n_buckets - 1; \
++ k = __hash_func(key); i = k & mask; \
++ last = i; \
++ while (!__ac_isempty(h->flags, i) && (__ac_isdel(h->flags, i) || !__hash_equal(h->keys[i], key))) { \
++ i = (i + (++step)) & mask; \
++ if (i == last) return h->n_buckets; \
++ } \
++ return __ac_iseither(h->flags, i)? h->n_buckets : i; \
++ } else return 0; \
++ } \
++ SCOPE int kh_resize_##name(kh_##name##_t *h, khint_t new_n_buckets) \
++ { /* This function uses 0.25*n_buckets bytes of working space instead of [sizeof(key_t+val_t)+.25]*n_buckets. */ \
++ khint32_t *new_flags = 0; \
++ khint_t j = 1; \
++ { \
++ kroundup32(new_n_buckets); \
++ if (new_n_buckets < 4) new_n_buckets = 4; \
++ if (h->size >= (khint_t)(new_n_buckets * __ac_HASH_UPPER + 0.5)) j = 0; /* requested size is too small */ \
++ else { /* hash table size to be changed (shrink or expand); rehash */ \
++ new_flags = (khint32_t*)kmalloc(__ac_fsize(new_n_buckets) * sizeof(khint32_t)); \
++ if (!new_flags) return -1; \
++ memset(new_flags, 0xaa, __ac_fsize(new_n_buckets) * sizeof(khint32_t)); \
++ if (h->n_buckets < new_n_buckets) { /* expand */ \
++ khkey_t *new_keys = (khkey_t*)krealloc((void *)h->keys, new_n_buckets * sizeof(khkey_t)); \
++ if (!new_keys) { kfree(new_flags); return -1; } \
++ h->keys = new_keys; \
++ if (kh_is_map) { \
++ khval_t *new_vals = (khval_t*)krealloc((void *)h->vals, new_n_buckets * sizeof(khval_t)); \
++ if (!new_vals) { kfree(new_flags); return -1; } \
++ h->vals = new_vals; \
++ } \
++ } /* otherwise shrink */ \
++ } \
++ } \
++ if (j) { /* rehashing is needed */ \
++ for (j = 0; j != h->n_buckets; ++j) { \
++ if (__ac_iseither(h->flags, j) == 0) { \
++ khkey_t key = h->keys[j]; \
++ khval_t val; \
++ khint_t new_mask; \
++ new_mask = new_n_buckets - 1; \
++ if (kh_is_map) val = h->vals[j]; \
++ __ac_set_isdel_true(h->flags, j); \
++ while (1) { /* kick-out process; sort of like in Cuckoo hashing */ \
++ khint_t k, i, step = 0; \
++ k = __hash_func(key); \
++ i = k & new_mask; \
++ while (!__ac_isempty(new_flags, i)) i = (i + (++step)) & new_mask; \
++ __ac_set_isempty_false(new_flags, i); \
++ if (i < h->n_buckets && __ac_iseither(h->flags, i) == 0) { /* kick out the existing element */ \
++ { khkey_t tmp = h->keys[i]; h->keys[i] = key; key = tmp; } \
++ if (kh_is_map) { khval_t tmp = h->vals[i]; h->vals[i] = val; val = tmp; } \
++ __ac_set_isdel_true(h->flags, i); /* mark it as deleted in the old hash table */ \
++ } else { /* write the element and jump out of the loop */ \
++ h->keys[i] = key; \
++ if (kh_is_map) h->vals[i] = val; \
++ break; \
++ } \
++ } \
++ } \
++ } \
++ if (h->n_buckets > new_n_buckets) { /* shrink the hash table */ \
++ h->keys = (khkey_t*)krealloc((void *)h->keys, new_n_buckets * sizeof(khkey_t)); \
++ if (kh_is_map) h->vals = (khval_t*)krealloc((void *)h->vals, new_n_buckets * sizeof(khval_t)); \
++ } \
++ kfree(h->flags); /* free the working space */ \
++ h->flags = new_flags; \
++ h->n_buckets = new_n_buckets; \
++ h->n_occupied = h->size; \
++ h->upper_bound = (khint_t)(h->n_buckets * __ac_HASH_UPPER + 0.5); \
++ } \
++ return 0; \
++ } \
++ SCOPE khint_t kh_put_##name(kh_##name##_t *h, khkey_t key, int *ret) \
++ { \
++ khint_t x; \
++ if (h->n_occupied >= h->upper_bound) { /* update the hash table */ \
++ if (h->n_buckets > (h->size<<1)) { \
++ if (kh_resize_##name(h, h->n_buckets - 1) < 0) { /* clear "deleted" elements */ \
++ *ret = -1; return h->n_buckets; \
++ } \
++ } else if (kh_resize_##name(h, h->n_buckets + 1) < 0) { /* expand the hash table */ \
++ *ret = -1; return h->n_buckets; \
++ } \
++ } /* TODO: to implement automatically shrinking; resize() already support shrinking */ \
++ { \
++ khint_t k, i, site, last, mask = h->n_buckets - 1, step = 0; \
++ x = site = h->n_buckets; k = __hash_func(key); i = k & mask; \
++ if (__ac_isempty(h->flags, i)) x = i; /* for speed up */ \
++ else { \
++ last = i; \
++ while (!__ac_isempty(h->flags, i) && (__ac_isdel(h->flags, i) || !__hash_equal(h->keys[i], key))) { \
++ if (__ac_isdel(h->flags, i)) site = i; \
++ i = (i + (++step)) & mask; \
++ if (i == last) { x = site; break; } \
++ } \
++ if (x == h->n_buckets) { \
++ if (__ac_isempty(h->flags, i) && site != h->n_buckets) x = site; \
++ else x = i; \
++ } \
++ } \
++ } \
++ if (__ac_isempty(h->flags, x)) { /* not present at all */ \
++ h->keys[x] = key; \
++ __ac_set_isboth_false(h->flags, x); \
++ ++h->size; ++h->n_occupied; \
++ *ret = 1; \
++ } else if (__ac_isdel(h->flags, x)) { /* deleted */ \
++ h->keys[x] = key; \
++ __ac_set_isboth_false(h->flags, x); \
++ ++h->size; \
++ *ret = 2; \
++ } else *ret = 0; /* Don't touch h->keys[x] if present and not deleted */ \
++ return x; \
++ } \
++ SCOPE void kh_del_##name(kh_##name##_t *h, khint_t x) \
++ { \
++ if (x != h->n_buckets && !__ac_iseither(h->flags, x)) { \
++ __ac_set_isdel_true(h->flags, x); \
++ --h->size; \
++ } \
++ }
++
++#define KHASH_DECLARE(name, khkey_t, khval_t) \
++ __KHASH_TYPE(name, khkey_t, khval_t) \
++ __KHASH_PROTOTYPES(name, khkey_t, khval_t)
++
++#define KHASH_INIT2(name, SCOPE, khkey_t, khval_t, kh_is_map, __hash_func, __hash_equal) \
++ __KHASH_TYPE(name, khkey_t, khval_t) \
++ __KHASH_IMPL(name, SCOPE, khkey_t, khval_t, kh_is_map, __hash_func, __hash_equal)
++
++#define KHASH_INIT(name, khkey_t, khval_t, kh_is_map, __hash_func, __hash_equal) \
++ KHASH_INIT2(name, static kh_inline klib_unused, khkey_t, khval_t, kh_is_map, __hash_func, __hash_equal)
++
++/* --- BEGIN OF HASH FUNCTIONS --- */
++
++/*! @function
++ @abstract Integer hash function
++ @param key The integer [khint32_t]
++ @return The hash value [khint_t]
++ */
++#define kh_int_hash_func(key) (khint32_t)(key)
++/*! @function
++ @abstract Integer comparison function
++ */
++#define kh_int_hash_equal(a, b) ((a) == (b))
++/*! @function
++ @abstract 64-bit integer hash function
++ @param key The integer [khint64_t]
++ @return The hash value [khint_t]
++ */
++#define kh_int64_hash_func(key) (khint32_t)((key)>>33^(key)^(key)<<11)
++/*! @function
++ @abstract 64-bit integer comparison function
++ */
++#define kh_int64_hash_equal(a, b) ((a) == (b))
++/*! @function
++ @abstract const char* hash function
++ @param s Pointer to a null terminated string
++ @return The hash value
++ */
++static kh_inline khint_t __ac_X31_hash_string(const char *s)
++{
++ khint_t h = (khint_t)*s;
++ if (h) for (++s ; *s; ++s) h = (h << 5) - h + (khint_t)*s;
++ return h;
++}
++/*! @function
++ @abstract Another interface to const char* hash function
++ @param key Pointer to a null terminated string [const char*]
++ @return The hash value [khint_t]
++ */
++#define kh_str_hash_func(key) __ac_X31_hash_string(key)
++/*! @function
++ @abstract Const char* comparison function
++ */
++#define kh_str_hash_equal(a, b) (strcmp(a, b) == 0)
++
++static kh_inline khint_t __ac_Wang_hash(khint_t key)
++{
++ key += ~(key << 15);
++ key ^= (key >> 10);
++ key += (key << 3);
++ key ^= (key >> 6);
++ key += ~(key << 11);
++ key ^= (key >> 16);
++ return key;
++}
++#define kh_int_hash_func2(key) __ac_Wang_hash((khint_t)key)
++
++/* --- END OF HASH FUNCTIONS --- */
++
++/* Other convenient macros... */
++
++/*!
++ @abstract Type of the hash table.
++ @param name Name of the hash table [symbol]
++ */
++#define khash_t(name) kh_##name##_t
++
++/*! @function
++ @abstract Initiate a hash table.
++ @param name Name of the hash table [symbol]
++ @return Pointer to the hash table [khash_t(name)*]
++ */
++#define kh_init(name) kh_init_##name()
++
++/*! @function
++ @abstract Destroy a hash table.
++ @param name Name of the hash table [symbol]
++ @param h Pointer to the hash table [khash_t(name)*]
++ */
++#define kh_destroy(name, h) kh_destroy_##name(h)
++
++/*! @function
++ @abstract Reset a hash table without deallocating memory.
++ @param name Name of the hash table [symbol]
++ @param h Pointer to the hash table [khash_t(name)*]
++ */
++#define kh_clear(name, h) kh_clear_##name(h)
++
++/*! @function
++ @abstract Resize a hash table.
++ @param name Name of the hash table [symbol]
++ @param h Pointer to the hash table [khash_t(name)*]
++ @param s New size [khint_t]
++ */
++#define kh_resize(name, h, s) kh_resize_##name(h, s)
++
++/*! @function
++ @abstract Insert a key to the hash table.
++ @param name Name of the hash table [symbol]
++ @param h Pointer to the hash table [khash_t(name)*]
++ @param k Key [type of keys]
++ @param r Extra return code: -1 if the operation failed;
++ 0 if the key is present in the hash table;
++ 1 if the bucket is empty (never used); 2 if the element in
++ the bucket has been deleted [int*]
++ @return Iterator to the inserted element [khint_t]
++ */
++#define kh_put(name, h, k, r) kh_put_##name(h, k, r)
++
++/*! @function
++ @abstract Retrieve a key from the hash table.
++ @param name Name of the hash table [symbol]
++ @param h Pointer to the hash table [khash_t(name)*]
++ @param k Key [type of keys]
++ @return Iterator to the found element, or kh_end(h) if the element is absent [khint_t]
++ */
++#define kh_get(name, h, k) kh_get_##name(h, k)
++
++/*! @function
++ @abstract Remove a key from the hash table.
++ @param name Name of the hash table [symbol]
++ @param h Pointer to the hash table [khash_t(name)*]
++ @param k Iterator to the element to be deleted [khint_t]
++ */
++#define kh_del(name, h, k) kh_del_##name(h, k)
++
++/*! @function
++ @abstract Test whether a bucket contains data.
++ @param h Pointer to the hash table [khash_t(name)*]
++ @param x Iterator to the bucket [khint_t]
++ @return 1 if containing data; 0 otherwise [int]
++ */
++#define kh_exist(h, x) (!__ac_iseither((h)->flags, (x)))
++
++/*! @function
++ @abstract Get key given an iterator
++ @param h Pointer to the hash table [khash_t(name)*]
++ @param x Iterator to the bucket [khint_t]
++ @return Key [type of keys]
++ */
++#define kh_key(h, x) ((h)->keys[x])
++
++/*! @function
++ @abstract Get value given an iterator
++ @param h Pointer to the hash table [khash_t(name)*]
++ @param x Iterator to the bucket [khint_t]
++ @return Value [type of values]
++ @discussion For hash sets, calling this results in segfault.
++ */
++#define kh_val(h, x) ((h)->vals[x])
++
++/*! @function
++ @abstract Alias of kh_val()
++ */
++#define kh_value(h, x) ((h)->vals[x])
++
++/*! @function
++ @abstract Get the start iterator
++ @param h Pointer to the hash table [khash_t(name)*]
++ @return The start iterator [khint_t]
++ */
++#define kh_begin(h) (khint_t)(0)
++
++/*! @function
++ @abstract Get the end iterator
++ @param h Pointer to the hash table [khash_t(name)*]
++ @return The end iterator [khint_t]
++ */
++#define kh_end(h) ((h)->n_buckets)
++
++/*! @function
++ @abstract Get the number of elements in the hash table
++ @param h Pointer to the hash table [khash_t(name)*]
++ @return Number of elements in the hash table [khint_t]
++ */
++#define kh_size(h) ((h)->size)
++
++/*! @function
++ @abstract Get the number of buckets in the hash table
++ @param h Pointer to the hash table [khash_t(name)*]
++ @return Number of buckets in the hash table [khint_t]
++ */
++#define kh_n_buckets(h) ((h)->n_buckets)
++
++/*! @function
++ @abstract Iterate over the entries in the hash table
++ @param h Pointer to the hash table [khash_t(name)*]
++ @param kvar Variable to which key will be assigned
++ @param vvar Variable to which value will be assigned
++ @param code Block of code to execute
++ */
++#define kh_foreach(h, kvar, vvar, code) { khint_t __i; \
++ for (__i = kh_begin(h); __i != kh_end(h); ++__i) { \
++ if (!kh_exist(h,__i)) continue; \
++ (kvar) = kh_key(h,__i); \
++ (vvar) = kh_val(h,__i); \
++ code; \
++ } }
++
++/*! @function
++ @abstract Iterate over the values in the hash table
++ @param h Pointer to the hash table [khash_t(name)*]
++ @param vvar Variable to which value will be assigned
++ @param code Block of code to execute
++ */
++#define kh_foreach_value(h, vvar, code) { khint_t __i; \
++ for (__i = kh_begin(h); __i != kh_end(h); ++__i) { \
++ if (!kh_exist(h,__i)) continue; \
++ (vvar) = kh_val(h,__i); \
++ code; \
++ } }
++
++/* More convenient interfaces */
++
++/*! @function
++ @abstract Instantiate a hash set containing integer keys
++ @param name Name of the hash table [symbol]
++ */
++#define KHASH_SET_INIT_INT(name) \
++ KHASH_INIT(name, khint32_t, char, 0, kh_int_hash_func, kh_int_hash_equal)
++
++/*! @function
++ @abstract Instantiate a hash map containing integer keys
++ @param name Name of the hash table [symbol]
++ @param khval_t Type of values [type]
++ */
++#define KHASH_MAP_INIT_INT(name, khval_t) \
++ KHASH_INIT(name, khint32_t, khval_t, 1, kh_int_hash_func, kh_int_hash_equal)
++
++/*! @function
++ @abstract Instantiate a hash set containing 64-bit integer keys
++ @param name Name of the hash table [symbol]
++ */
++#define KHASH_SET_INIT_INT64(name) \
++ KHASH_INIT(name, khint64_t, char, 0, kh_int64_hash_func, kh_int64_hash_equal)
++
++/*! @function
++ @abstract Instantiate a hash map containing 64-bit integer keys
++ @param name Name of the hash table [symbol]
++ @param khval_t Type of values [type]
++ */
++#define KHASH_MAP_INIT_INT64(name, khval_t) \
++ KHASH_INIT(name, khint64_t, khval_t, 1, kh_int64_hash_func, kh_int64_hash_equal)
++
++typedef const char *kh_cstr_t;
++/*! @function
++ @abstract Instantiate a hash map containing const char* keys
++ @param name Name of the hash table [symbol]
++ */
++#define KHASH_SET_INIT_STR(name) \
++ KHASH_INIT(name, kh_cstr_t, char, 0, kh_str_hash_func, kh_str_hash_equal)
++
++/*! @function
++ @abstract Instantiate a hash map containing const char* keys
++ @param name Name of the hash table [symbol]
++ @param khval_t Type of values [type]
++ */
++#define KHASH_MAP_INIT_STR(name, khval_t) \
++ KHASH_INIT(name, kh_cstr_t, khval_t, 1, kh_str_hash_func, kh_str_hash_equal)
++
++#endif /* __AC_KHASH_H */
+diff --git a/kvec.h b/kvec.h
+new file mode 100644
+index 0000000..10f1c5b
+--- /dev/null
++++ b/kvec.h
+@@ -0,0 +1,90 @@
++/* The MIT License
++
++ Copyright (c) 2008, by Attractive Chaos <attractor@live.co.uk>
++
++ Permission is hereby granted, free of charge, to any person obtaining
++ a copy of this software and associated documentation files (the
++ "Software"), to deal in the Software without restriction, including
++ without limitation the rights to use, copy, modify, merge, publish,
++ distribute, sublicense, and/or sell copies of the Software, and to
++ permit persons to whom the Software is furnished to do so, subject to
++ the following conditions:
++
++ The above copyright notice and this permission notice shall be
++ included in all copies or substantial portions of the Software.
++
++ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
++ EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
++ MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
++ NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
++ BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
++ ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
++ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
++ SOFTWARE.
++*/
++
++/*
++ An example:
++
++#include "kvec.h"
++int main() {
++ kvec_t(int) array;
++ kv_init(array);
++ kv_push(int, array, 10); // append
++ kv_a(int, array, 20) = 5; // dynamic
++ kv_A(array, 20) = 4; // static
++ kv_destroy(array);
++ return 0;
++}
++*/
++
++/*
++ 2008-09-22 (0.1.0):
++
++ * The initial version.
++
++*/
++
++#ifndef AC_KVEC_H
++#define AC_KVEC_H
++
++#include <stdlib.h>
++
++#define kv_roundup32(x) (--(x), (x)|=(x)>>1, (x)|=(x)>>2, (x)|=(x)>>4, (x)|=(x)>>8, (x)|=(x)>>16, ++(x))
++
++#define kvec_t(type) struct { size_t n, m; type *a; }
++#define kv_init(v) ((v).n = (v).m = 0, (v).a = 0)
++#define kv_destroy(v) free((v).a)
++#define kv_A(v, i) ((v).a[(i)])
++#define kv_pop(v) ((v).a[--(v).n])
++#define kv_size(v) ((v).n)
++#define kv_max(v) ((v).m)
++
++#define kv_resize(type, v, s) ((v).m = (s), (v).a = (type*)realloc((v).a, sizeof(type) * (v).m))
++
++#define kv_copy(type, v1, v0) do { \
++ if ((v1).m < (v0).n) kv_resize(type, v1, (v0).n); \
++ (v1).n = (v0).n; \
++ memcpy((v1).a, (v0).a, sizeof(type) * (v0).n); \
++ } while (0) \
++
++#define kv_push(type, v, x) do { \
++ if ((v).n == (v).m) { \
++ (v).m = (v).m? (v).m<<1 : 2; \
++ (v).a = (type*)realloc((v).a, sizeof(type) * (v).m); \
++ } \
++ (v).a[(v).n++] = (x); \
++ } while (0)
++
++#define kv_pushp(type, v) ((((v).n == (v).m)? \
++ ((v).m = ((v).m? (v).m<<1 : 2), \
++ (v).a = (type*)realloc((v).a, sizeof(type) * (v).m), 0) \
++ : 0), ((v).a + ((v).n++)))
++
++#define kv_a(type, v, i) (((v).m <= (size_t)(i)? \
++ ((v).m = (v).n = (i) + 1, kv_roundup32((v).m), \
++ (v).a = (type*)realloc((v).a, sizeof(type) * (v).m), 0) \
++ : (v).n <= (size_t)(i)? (v).n = (i) + 1 \
++ : 0), (v).a[(i)])
++
++#endif
+diff --git a/rowcolumn_diacritics_helpers.c b/rowcolumn_diacritics_helpers.c
+new file mode 100644
+index 0000000..829c0fc
+--- /dev/null
++++ b/rowcolumn_diacritics_helpers.c
+@@ -0,0 +1,391 @@
++#include <stdint.h>
++
++uint16_t diacritic_to_num(uint32_t code)
++{
++ switch (code) {
++ case 0x305:
++ return code - 0x305 + 1;
++ case 0x30d:
++ case 0x30e:
++ return code - 0x30d + 2;
++ case 0x310:
++ return code - 0x310 + 4;
++ case 0x312:
++ return code - 0x312 + 5;
++ case 0x33d:
++ case 0x33e:
++ case 0x33f:
++ return code - 0x33d + 6;
++ case 0x346:
++ return code - 0x346 + 9;
++ case 0x34a:
++ case 0x34b:
++ case 0x34c:
++ return code - 0x34a + 10;
++ case 0x350:
++ case 0x351:
++ case 0x352:
++ return code - 0x350 + 13;
++ case 0x357:
++ return code - 0x357 + 16;
++ case 0x35b:
++ return code - 0x35b + 17;
++ case 0x363:
++ case 0x364:
++ case 0x365:
++ case 0x366:
++ case 0x367:
++ case 0x368:
++ case 0x369:
++ case 0x36a:
++ case 0x36b:
++ case 0x36c:
++ case 0x36d:
++ case 0x36e:
++ case 0x36f:
++ return code - 0x363 + 18;
++ case 0x483:
++ case 0x484:
++ case 0x485:
++ case 0x486:
++ case 0x487:
++ return code - 0x483 + 31;
++ case 0x592:
++ case 0x593:
++ case 0x594:
++ case 0x595:
++ return code - 0x592 + 36;
++ case 0x597:
++ case 0x598:
++ case 0x599:
++ return code - 0x597 + 40;
++ case 0x59c:
++ case 0x59d:
++ case 0x59e:
++ case 0x59f:
++ case 0x5a0:
++ case 0x5a1:
++ return code - 0x59c + 43;
++ case 0x5a8:
++ case 0x5a9:
++ return code - 0x5a8 + 49;
++ case 0x5ab:
++ case 0x5ac:
++ return code - 0x5ab + 51;
++ case 0x5af:
++ return code - 0x5af + 53;
++ case 0x5c4:
++ return code - 0x5c4 + 54;
++ case 0x610:
++ case 0x611:
++ case 0x612:
++ case 0x613:
++ case 0x614:
++ case 0x615:
++ case 0x616:
++ case 0x617:
++ return code - 0x610 + 55;
++ case 0x657:
++ case 0x658:
++ case 0x659:
++ case 0x65a:
++ case 0x65b:
++ return code - 0x657 + 63;
++ case 0x65d:
++ case 0x65e:
++ return code - 0x65d + 68;
++ case 0x6d6:
++ case 0x6d7:
++ case 0x6d8:
++ case 0x6d9:
++ case 0x6da:
++ case 0x6db:
++ case 0x6dc:
++ return code - 0x6d6 + 70;
++ case 0x6df:
++ case 0x6e0:
++ case 0x6e1:
++ case 0x6e2:
++ return code - 0x6df + 77;
++ case 0x6e4:
++ return code - 0x6e4 + 81;
++ case 0x6e7:
++ case 0x6e8:
++ return code - 0x6e7 + 82;
++ case 0x6eb:
++ case 0x6ec:
++ return code - 0x6eb + 84;
++ case 0x730:
++ return code - 0x730 + 86;
++ case 0x732:
++ case 0x733:
++ return code - 0x732 + 87;
++ case 0x735:
++ case 0x736:
++ return code - 0x735 + 89;
++ case 0x73a:
++ return code - 0x73a + 91;
++ case 0x73d:
++ return code - 0x73d + 92;
++ case 0x73f:
++ case 0x740:
++ case 0x741:
++ return code - 0x73f + 93;
++ case 0x743:
++ return code - 0x743 + 96;
++ case 0x745:
++ return code - 0x745 + 97;
++ case 0x747:
++ return code - 0x747 + 98;
++ case 0x749:
++ case 0x74a:
++ return code - 0x749 + 99;
++ case 0x7eb:
++ case 0x7ec:
++ case 0x7ed:
++ case 0x7ee:
++ case 0x7ef:
++ case 0x7f0:
++ case 0x7f1:
++ return code - 0x7eb + 101;
++ case 0x7f3:
++ return code - 0x7f3 + 108;
++ case 0x816:
++ case 0x817:
++ case 0x818:
++ case 0x819:
++ return code - 0x816 + 109;
++ case 0x81b:
++ case 0x81c:
++ case 0x81d:
++ case 0x81e:
++ case 0x81f:
++ case 0x820:
++ case 0x821:
++ case 0x822:
++ case 0x823:
++ return code - 0x81b + 113;
++ case 0x825:
++ case 0x826:
++ case 0x827:
++ return code - 0x825 + 122;
++ case 0x829:
++ case 0x82a:
++ case 0x82b:
++ case 0x82c:
++ case 0x82d:
++ return code - 0x829 + 125;
++ case 0x951:
++ return code - 0x951 + 130;
++ case 0x953:
++ case 0x954:
++ return code - 0x953 + 131;
++ case 0xf82:
++ case 0xf83:
++ return code - 0xf82 + 133;
++ case 0xf86:
++ case 0xf87:
++ return code - 0xf86 + 135;
++ case 0x135d:
++ case 0x135e:
++ case 0x135f:
++ return code - 0x135d + 137;
++ case 0x17dd:
++ return code - 0x17dd + 140;
++ case 0x193a:
++ return code - 0x193a + 141;
++ case 0x1a17:
++ return code - 0x1a17 + 142;
++ case 0x1a75:
++ case 0x1a76:
++ case 0x1a77:
++ case 0x1a78:
++ case 0x1a79:
++ case 0x1a7a:
++ case 0x1a7b:
++ case 0x1a7c:
++ return code - 0x1a75 + 143;
++ case 0x1b6b:
++ return code - 0x1b6b + 151;
++ case 0x1b6d:
++ case 0x1b6e:
++ case 0x1b6f:
++ case 0x1b70:
++ case 0x1b71:
++ case 0x1b72:
++ case 0x1b73:
++ return code - 0x1b6d + 152;
++ case 0x1cd0:
++ case 0x1cd1:
++ case 0x1cd2:
++ return code - 0x1cd0 + 159;
++ case 0x1cda:
++ case 0x1cdb:
++ return code - 0x1cda + 162;
++ case 0x1ce0:
++ return code - 0x1ce0 + 164;
++ case 0x1dc0:
++ case 0x1dc1:
++ return code - 0x1dc0 + 165;
++ case 0x1dc3:
++ case 0x1dc4:
++ case 0x1dc5:
++ case 0x1dc6:
++ case 0x1dc7:
++ case 0x1dc8:
++ case 0x1dc9:
++ return code - 0x1dc3 + 167;
++ case 0x1dcb:
++ case 0x1dcc:
++ return code - 0x1dcb + 174;
++ case 0x1dd1:
++ case 0x1dd2:
++ case 0x1dd3:
++ case 0x1dd4:
++ case 0x1dd5:
++ case 0x1dd6:
++ case 0x1dd7:
++ case 0x1dd8:
++ case 0x1dd9:
++ case 0x1dda:
++ case 0x1ddb:
++ case 0x1ddc:
++ case 0x1ddd:
++ case 0x1dde:
++ case 0x1ddf:
++ case 0x1de0:
++ case 0x1de1:
++ case 0x1de2:
++ case 0x1de3:
++ case 0x1de4:
++ case 0x1de5:
++ case 0x1de6:
++ return code - 0x1dd1 + 176;
++ case 0x1dfe:
++ return code - 0x1dfe + 198;
++ case 0x20d0:
++ case 0x20d1:
++ return code - 0x20d0 + 199;
++ case 0x20d4:
++ case 0x20d5:
++ case 0x20d6:
++ case 0x20d7:
++ return code - 0x20d4 + 201;
++ case 0x20db:
++ case 0x20dc:
++ return code - 0x20db + 205;
++ case 0x20e1:
++ return code - 0x20e1 + 207;
++ case 0x20e7:
++ return code - 0x20e7 + 208;
++ case 0x20e9:
++ return code - 0x20e9 + 209;
++ case 0x20f0:
++ return code - 0x20f0 + 210;
++ case 0x2cef:
++ case 0x2cf0:
++ case 0x2cf1:
++ return code - 0x2cef + 211;
++ case 0x2de0:
++ case 0x2de1:
++ case 0x2de2:
++ case 0x2de3:
++ case 0x2de4:
++ case 0x2de5:
++ case 0x2de6:
++ case 0x2de7:
++ case 0x2de8:
++ case 0x2de9:
++ case 0x2dea:
++ case 0x2deb:
++ case 0x2dec:
++ case 0x2ded:
++ case 0x2dee:
++ case 0x2def:
++ case 0x2df0:
++ case 0x2df1:
++ case 0x2df2:
++ case 0x2df3:
++ case 0x2df4:
++ case 0x2df5:
++ case 0x2df6:
++ case 0x2df7:
++ case 0x2df8:
++ case 0x2df9:
++ case 0x2dfa:
++ case 0x2dfb:
++ case 0x2dfc:
++ case 0x2dfd:
++ case 0x2dfe:
++ case 0x2dff:
++ return code - 0x2de0 + 214;
++ case 0xa66f:
++ return code - 0xa66f + 246;
++ case 0xa67c:
++ case 0xa67d:
++ return code - 0xa67c + 247;
++ case 0xa6f0:
++ case 0xa6f1:
++ return code - 0xa6f0 + 249;
++ case 0xa8e0:
++ case 0xa8e1:
++ case 0xa8e2:
++ case 0xa8e3:
++ case 0xa8e4:
++ case 0xa8e5:
++ case 0xa8e6:
++ case 0xa8e7:
++ case 0xa8e8:
++ case 0xa8e9:
++ case 0xa8ea:
++ case 0xa8eb:
++ case 0xa8ec:
++ case 0xa8ed:
++ case 0xa8ee:
++ case 0xa8ef:
++ case 0xa8f0:
++ case 0xa8f1:
++ return code - 0xa8e0 + 251;
++ case 0xaab0:
++ return code - 0xaab0 + 269;
++ case 0xaab2:
++ case 0xaab3:
++ return code - 0xaab2 + 270;
++ case 0xaab7:
++ case 0xaab8:
++ return code - 0xaab7 + 272;
++ case 0xaabe:
++ case 0xaabf:
++ return code - 0xaabe + 274;
++ case 0xaac1:
++ return code - 0xaac1 + 276;
++ case 0xfe20:
++ case 0xfe21:
++ case 0xfe22:
++ case 0xfe23:
++ case 0xfe24:
++ case 0xfe25:
++ case 0xfe26:
++ return code - 0xfe20 + 277;
++ case 0x10a0f:
++ return code - 0x10a0f + 284;
++ case 0x10a38:
++ return code - 0x10a38 + 285;
++ case 0x1d185:
++ case 0x1d186:
++ case 0x1d187:
++ case 0x1d188:
++ case 0x1d189:
++ return code - 0x1d185 + 286;
++ case 0x1d1aa:
++ case 0x1d1ab:
++ case 0x1d1ac:
++ case 0x1d1ad:
++ return code - 0x1d1aa + 291;
++ case 0x1d242:
++ case 0x1d243:
++ case 0x1d244:
++ return code - 0x1d242 + 295;
++ }
++ return 0;
++}
+diff --git a/st.c b/st.c
+index 57c6e96..f1c5299 100644
+--- a/st.c
++++ b/st.c
+@@ -19,6 +19,7 @@
+
+ #include "st.h"
+ #include "win.h"
++#include "graphics.h"
+
+ #if defined(__linux)
+ #include <pty.h>
+@@ -36,6 +37,10 @@
+ #define STR_BUF_SIZ ESC_BUF_SIZ
+ #define STR_ARG_SIZ ESC_ARG_SIZ
+
++/* PUA character used as an image placeholder */
++#define IMAGE_PLACEHOLDER_CHAR 0x10EEEE
++#define IMAGE_PLACEHOLDER_CHAR_OLD 0xEEEE
++
+ /* macros */
+ #define IS_SET(flag) ((term.mode & (flag)) != 0)
+ #define ISCONTROLC0(c) (BETWEEN(c, 0, 0x1f) || (c) == 0x7f)
+@@ -113,6 +118,8 @@ typedef struct {
+ typedef struct {
+ int row; /* nb row */
+ int col; /* nb col */
++ int pixw; /* width of the text area in pixels */
++ int pixh; /* height of the text area in pixels */
+ Line *line; /* screen */
+ Line *alt; /* alternate screen */
+ int *dirty; /* dirtyness of lines */
+@@ -213,7 +220,6 @@ static Rune utf8decodebyte(char, size_t *);
+ static char utf8encodebyte(Rune, size_t);
+ static size_t utf8validate(Rune *, size_t);
+
+-static char *base64dec(const char *);
+ static char base64dec_getc(const char **);
+
+ static ssize_t xwrite(int, const char *, size_t);
+@@ -232,6 +238,10 @@ static const uchar utfmask[UTF_SIZ + 1] = {0xC0, 0x80, 0xE0, 0xF0, 0xF8};
+ static const Rune utfmin[UTF_SIZ + 1] = { 0, 0, 0x80, 0x800, 0x10000};
+ static const Rune utfmax[UTF_SIZ + 1] = {0x10FFFF, 0x7F, 0x7FF, 0xFFFF, 0x10FFFF};
+
++/* Converts a diacritic to a row/column/etc number. The result is 1-base, 0
++ * means "couldn't convert". Defined in rowcolumn_diacritics_helpers.c */
++uint16_t diacritic_to_num(uint32_t code);
++
+ ssize_t
+ xwrite(int fd, const char *s, size_t len)
+ {
+@@ -616,6 +626,12 @@ getsel(void)
+ if (gp->mode & ATTR_WDUMMY)
+ continue;
+
++ if (gp->mode & ATTR_IMAGE) {
++ // TODO: Copy diacritics as well
++ ptr += utf8encode(IMAGE_PLACEHOLDER_CHAR, ptr);
++ continue;
++ }
++
+ ptr += utf8encode(gp->u, ptr);
+ }
+
+@@ -819,7 +835,11 @@ ttyread(void)
+ {
+ static char buf[BUFSIZ];
+ static int buflen = 0;
+- int ret, written;
++ static int already_processing = 0;
++ int ret, written = 0;
++
++ if (buflen >= LEN(buf))
++ return 0;
+
+ /* append read bytes to unprocessed bytes */
+ ret = read(cmdfd, buf+buflen, LEN(buf)-buflen);
+@@ -831,7 +851,24 @@ ttyread(void)
+ die("couldn't read from shell: %s\n", strerror(errno));
+ default:
+ buflen += ret;
+- written = twrite(buf, buflen, 0);
++ if (already_processing) {
++ /* Avoid recursive call to twrite() */
++ return ret;
++ }
++ already_processing = 1;
++ while (1) {
++ int buflen_before_processing = buflen;
++ written += twrite(buf + written, buflen - written, 0);
++ // If buflen changed during the call to twrite, there is
++ // new data, and we need to keep processing, otherwise
++ // we can exit. This will not loop forever because the
++ // buffer is limited, and we don't clean it in this
++ // loop, so at some point ttywrite will have to drop
++ // some data.
++ if (buflen_before_processing == buflen)
++ break;
++ }
++ already_processing = 0;
+ buflen -= written;
+ /* keep any incomplete UTF-8 byte sequence for the next call */
+ if (buflen > 0)
+@@ -874,6 +911,7 @@ ttywriteraw(const char *s, size_t n)
+ fd_set wfd, rfd;
+ ssize_t r;
+ size_t lim = 256;
++ int retries_left = 100;
+
+ /*
+ * Remember that we are using a pty, which might be a modem line.
+@@ -882,6 +920,9 @@ ttywriteraw(const char *s, size_t n)
+ * FIXME: Migrate the world to Plan 9.
+ */
+ while (n > 0) {
++ if (retries_left-- <= 0)
++ goto too_many_retries;
++
+ FD_ZERO(&wfd);
+ FD_ZERO(&rfd);
+ FD_SET(cmdfd, &wfd);
+@@ -923,11 +964,16 @@ ttywriteraw(const char *s, size_t n)
+
+ write_error:
+ die("write error on tty: %s\n", strerror(errno));
++too_many_retries:
++ fprintf(stderr, "Could not write %zu bytes to tty\n", n);
+ }
+
+ void
+ ttyresize(int tw, int th)
+ {
++ term.pixw = tw;
++ term.pixh = th;
++
+ struct winsize w;
+
+ w.ws_row = term.row;
+@@ -1015,7 +1061,8 @@ treset(void)
+ term.c = (TCursor){{
+ .mode = ATTR_NULL,
+ .fg = defaultfg,
+- .bg = defaultbg
++ .bg = defaultbg,
++ .decor = DECOR_DEFAULT_COLOR
+ }, .x = 0, .y = 0, .state = CURSOR_DEFAULT};
+
+ memset(term.tabs, 0, term.col * sizeof(*term.tabs));
+@@ -1038,7 +1085,9 @@ treset(void)
+ void
+ tnew(int col, int row)
+ {
+- term = (Term){ .c = { .attr = { .fg = defaultfg, .bg = defaultbg } } };
++ term = (Term){.c = {.attr = {.fg = defaultfg,
++ .bg = defaultbg,
++ .decor = DECOR_DEFAULT_COLOR}}};
+ tresize(col, row);
+ treset();
+ }
+@@ -1215,9 +1264,24 @@ tsetchar(Rune u, const Glyph *attr, int x, int y)
+ term.line[y][x-1].mode &= ~ATTR_WIDE;
+ }
+
++ if (u == ' ' && term.line[y][x].mode & ATTR_IMAGE &&
++ tgetisclassicplaceholder(&term.line[y][x])) {
++ // This is a workaround: don't overwrite classic placement
++ // placeholders with space symbols (unlike Unicode placeholders
++ // which must be overwritten by anything).
++ term.line[y][x].bg = attr->bg;
++ term.dirty[y] = 1;
++ return;
++ }
++
+ term.dirty[y] = 1;
+ term.line[y][x] = *attr;
+ term.line[y][x].u = u;
++
++ if (u == IMAGE_PLACEHOLDER_CHAR || u == IMAGE_PLACEHOLDER_CHAR_OLD) {
++ term.line[y][x].u = 0;
++ term.line[y][x].mode |= ATTR_IMAGE;
++ }
+ }
+
+ void
+@@ -1244,12 +1308,104 @@ tclearregion(int x1, int y1, int x2, int y2)
+ selclear();
+ gp->fg = term.c.attr.fg;
+ gp->bg = term.c.attr.bg;
++ gp->decor = term.c.attr.decor;
+ gp->mode = 0;
+ gp->u = ' ';
+ }
+ }
+ }
+
++/// Fills a rectangle area with an image placeholder. The starting point is the
++/// cursor. Adds empty lines if needed. The placeholder will be marked as
++/// classic.
++void
++tcreateimgplaceholder(uint32_t image_id, uint32_t placement_id,
++ int cols, int rows, char do_not_move_cursor)
++{
++ for (int row = 0; row < rows; ++row) {
++ int y = term.c.y;
++ term.dirty[y] = 1;
++ for (int col = 0; col < cols; ++col) {
++ int x = term.c.x + col;
++ if (x >= term.col)
++ break;
++ Glyph *gp = &term.line[y][x];
++ if (selected(x, y))
++ selclear();
++ gp->mode = ATTR_IMAGE;
++ gp->u = 0;
++ tsetimgrow(gp, row + 1);
++ tsetimgcol(gp, col + 1);
++ tsetimgid(gp, image_id);
++ tsetimgplacementid(gp, placement_id);
++ tsetimgdiacriticcount(gp, 3);
++ tsetisclassicplaceholder(gp, 1);
++ }
++ // If moving the cursor is not allowed and this is the last line
++ // of the terminal, we are done.
++ if (do_not_move_cursor && y == term.row - 1)
++ break;
++ // Move the cursor down, maybe creating a new line. The x is
++ // preserved (we never change term.c.x in the loop above).
++ if (row != rows - 1)
++ tnewline(/*first_col=*/0);
++ }
++ if (do_not_move_cursor) {
++ // Return the cursor to the original position.
++ tmoveto(term.c.x, term.c.y - rows + 1);
++ } else {
++ // Move the cursor beyond the last column, as required by the
++ // protocol. If the cursor goes beyond the screen edge, insert a
++ // newline to match the behavior of kitty.
++ if (term.c.x + cols >= term.col)
++ tnewline(/*first_col=*/1);
++ else
++ tmoveto(term.c.x + cols, term.c.y);
++ }
++}
++
++void gr_for_each_image_cell(int (*callback)(void *data, uint32_t image_id,
++ uint32_t placement_id, int col,
++ int row, char is_classic),
++ void *data) {
++ for (int row = 0; row < term.row; ++row) {
++ for (int col = 0; col < term.col; ++col) {
++ Glyph *gp = &term.line[row][col];
++ if (gp->mode & ATTR_IMAGE) {
++ uint32_t image_id = tgetimgid(gp);
++ uint32_t placement_id = tgetimgplacementid(gp);
++ int ret =
++ callback(data, tgetimgid(gp),
++ tgetimgplacementid(gp),
++ tgetimgcol(gp), tgetimgrow(gp),
++ tgetisclassicplaceholder(gp));
++ if (ret == 1) {
++ term.dirty[row] = 1;
++ gp->mode = 0;
++ gp->u = ' ';
++ }
++ }
++ }
++ }
++}
++
++void gr_schedule_image_redraw_by_id(uint32_t image_id) {
++ for (int row = 0; row < term.row; ++row) {
++ if (term.dirty[row])
++ continue;
++ for (int col = 0; col < term.col; ++col) {
++ Glyph *gp = &term.line[row][col];
++ if (gp->mode & ATTR_IMAGE) {
++ uint32_t cell_image_id = tgetimgid(gp);
++ if (cell_image_id == image_id) {
++ term.dirty[row] = 1;
++ break;
++ }
++ }
++ }
++ }
++}
++
+ void
+ tdeletechar(int n)
+ {
+@@ -1368,6 +1524,7 @@ tsetattr(const int *attr, int l)
+ ATTR_STRUCK );
+ term.c.attr.fg = defaultfg;
+ term.c.attr.bg = defaultbg;
++ term.c.attr.decor = DECOR_DEFAULT_COLOR;
+ break;
+ case 1:
+ term.c.attr.mode |= ATTR_BOLD;
+@@ -1380,6 +1537,20 @@ tsetattr(const int *attr, int l)
+ break;
+ case 4:
+ term.c.attr.mode |= ATTR_UNDERLINE;
++ if (i + 1 < l) {
++ idx = attr[++i];
++ if (BETWEEN(idx, 1, 5)) {
++ tsetdecorstyle(&term.c.attr, idx);
++ } else if (idx == 0) {
++ term.c.attr.mode &= ~ATTR_UNDERLINE;
++ tsetdecorstyle(&term.c.attr, 0);
++ } else {
++ fprintf(stderr,
++ "erresc: unknown underline "
++ "style %d\n",
++ idx);
++ }
++ }
+ break;
+ case 5: /* slow blink */
+ /* FALLTHROUGH */
+@@ -1403,6 +1574,7 @@ tsetattr(const int *attr, int l)
+ break;
+ case 24:
+ term.c.attr.mode &= ~ATTR_UNDERLINE;
++ tsetdecorstyle(&term.c.attr, 0);
+ break;
+ case 25:
+ term.c.attr.mode &= ~ATTR_BLINK;
+@@ -1430,6 +1602,13 @@ tsetattr(const int *attr, int l)
+ case 49:
+ term.c.attr.bg = defaultbg;
+ break;
++ case 58:
++ if ((idx = tdefcolor(attr, &i, l)) >= 0)
++ tsetdecorcolor(&term.c.attr, idx);
++ break;
++ case 59:
++ tsetdecorcolor(&term.c.attr, DECOR_DEFAULT_COLOR);
++ break;
+ default:
+ if (BETWEEN(attr[i], 30, 37)) {
+ term.c.attr.fg = attr[i] - 30;
+@@ -1813,6 +1992,39 @@ csihandle(void)
+ goto unknown;
+ }
+ break;
++ case '>':
++ switch (csiescseq.mode[1]) {
++ case 'q': /* XTVERSION -- Print terminal name and version */
++ len = snprintf(buf, sizeof(buf),
++ "\033P>|st-graphics(%s)\033\\", VERSION);
++ ttywrite(buf, len, 0);
++ break;
++ default:
++ goto unknown;
++ }
++ break;
++ case 't': /* XTWINOPS -- Window manipulation */
++ switch (csiescseq.arg[0]) {
++ case 14: /* Report text area size in pixels. */
++ len = snprintf(buf, sizeof(buf), "\033[4;%i;%it",
++ term.pixh, term.pixw);
++ ttywrite(buf, len, 0);
++ break;
++ case 16: /* Report character cell size in pixels. */
++ len = snprintf(buf, sizeof(buf), "\033[6;%i;%it",
++ term.pixh / term.row,
++ term.pixw / term.col);
++ ttywrite(buf, len, 0);
++ break;
++ case 18: /* Report the size of the text area in characters. */
++ len = snprintf(buf, sizeof(buf), "\033[8;%i;%it",
++ term.row, term.col);
++ ttywrite(buf, len, 0);
++ break;
++ default:
++ goto unknown;
++ }
++ break;
+ }
+ }
+
+@@ -1962,8 +2174,26 @@ strhandle(void)
+ case 'k': /* old title set compatibility */
+ xsettitle(strescseq.args[0]);
+ return;
+- case 'P': /* DCS -- Device Control String */
+ case '_': /* APC -- Application Program Command */
++ if (gr_parse_command(strescseq.buf, strescseq.len)) {
++ GraphicsCommandResult *res = &graphics_command_result;
++ if (res->create_placeholder) {
++ tcreateimgplaceholder(
++ res->placeholder.image_id,
++ res->placeholder.placement_id,
++ res->placeholder.columns,
++ res->placeholder.rows,
++ res->placeholder.do_not_move_cursor);
++ }
++ if (res->response[0])
++ ttywrite(res->response, strlen(res->response),
++ 0);
++ if (res->redraw)
++ tfulldirt();
++ return;
++ }
++ return;
++ case 'P': /* DCS -- Device Control String */
+ case '^': /* PM -- Privacy Message */
+ return;
+ }
+@@ -2469,6 +2699,33 @@ check_control_code:
+ if (selected(term.c.x, term.c.y))
+ selclear();
+
++ if (width == 0) {
++ // It's probably a combining char. Combining characters are not
++ // supported, so we just ignore them, unless it denotes the row and
++ // column of an image character.
++ if (term.c.y <= 0 && term.c.x <= 0)
++ return;
++ else if (term.c.x == 0)
++ gp = &term.line[term.c.y-1][term.col-1];
++ else if (term.c.state & CURSOR_WRAPNEXT)
++ gp = &term.line[term.c.y][term.c.x];
++ else
++ gp = &term.line[term.c.y][term.c.x-1];
++ uint16_t num = diacritic_to_num(u);
++ if (num && (gp->mode & ATTR_IMAGE)) {
++ unsigned diaccount = tgetimgdiacriticcount(gp);
++ if (diaccount == 0)
++ tsetimgrow(gp, num);
++ else if (diaccount == 1)
++ tsetimgcol(gp, num);
++ else if (diaccount == 2)
++ tsetimg4thbyteplus1(gp, num);
++ tsetimgdiacriticcount(gp, diaccount + 1);
++ }
++ term.lastc = u;
++ return;
++ }
++
+ gp = &term.line[term.c.y][term.c.x];
+ if (IS_SET(MODE_WRAP) && (term.c.state & CURSOR_WRAPNEXT)) {
+ gp->mode |= ATTR_WRAP;
+@@ -2635,6 +2892,8 @@ drawregion(int x1, int y1, int x2, int y2)
+ {
+ int y;
+
++ xstartimagedraw(term.dirty, term.row);
++
+ for (y = y1; y < y2; y++) {
+ if (!term.dirty[y])
+ continue;
+@@ -2642,6 +2901,8 @@ drawregion(int x1, int y1, int x2, int y2)
+ term.dirty[y] = 0;
+ xdrawline(term.line[y], x1, y, x2);
+ }
++
++ xfinishimagedraw();
+ }
+
+ void
+@@ -2676,3 +2937,9 @@ redraw(void)
+ tfulldirt();
+ draw();
+ }
++
++Glyph
++getglyphat(int col, int row)
++{
++ return term.line[row][col];
++}
+diff --git a/st.h b/st.h
+index fd3b0d8..c5dd731 100644
+--- a/st.h
++++ b/st.h
+@@ -12,7 +12,7 @@
+ #define DEFAULT(a, b) (a) = (a) ? (a) : (b)
+ #define LIMIT(x, a, b) (x) = (x) < (a) ? (a) : (x) > (b) ? (b) : (x)
+ #define ATTRCMP(a, b) ((a).mode != (b).mode || (a).fg != (b).fg || \
+- (a).bg != (b).bg)
++ (a).bg != (b).bg || (a).decor != (b).decor)
+ #define TIMEDIFF(t1, t2) ((t1.tv_sec-t2.tv_sec)*1000 + \
+ (t1.tv_nsec-t2.tv_nsec)/1E6)
+ #define MODBIT(x, set, bit) ((set) ? ((x) |= (bit)) : ((x) &= ~(bit)))
+@@ -20,6 +20,10 @@
+ #define TRUECOLOR(r,g,b) (1 << 24 | (r) << 16 | (g) << 8 | (b))
+ #define IS_TRUECOL(x) (1 << 24 & (x))
+
++// This decor color indicates that the fg color should be used. Note that it's
++// not a 24-bit color because the 25-th bit is not set.
++#define DECOR_DEFAULT_COLOR 0x0ffffff
++
+ enum glyph_attribute {
+ ATTR_NULL = 0,
+ ATTR_BOLD = 1 << 0,
+@@ -34,6 +38,7 @@ enum glyph_attribute {
+ ATTR_WIDE = 1 << 9,
+ ATTR_WDUMMY = 1 << 10,
+ ATTR_BOLD_FAINT = ATTR_BOLD | ATTR_FAINT,
++ ATTR_IMAGE = 1 << 14,
+ };
+
+ enum selection_mode {
+@@ -52,6 +57,14 @@ enum selection_snap {
+ SNAP_LINE = 2
+ };
+
++enum underline_style {
++ UNDERLINE_STRAIGHT = 1,
++ UNDERLINE_DOUBLE = 2,
++ UNDERLINE_CURLY = 3,
++ UNDERLINE_DOTTED = 4,
++ UNDERLINE_DASHED = 5,
++};
++
+ typedef unsigned char uchar;
+ typedef unsigned int uint;
+ typedef unsigned long ulong;
+@@ -65,6 +78,7 @@ typedef struct {
+ ushort mode; /* attribute flags */
+ uint32_t fg; /* foreground */
+ uint32_t bg; /* background */
++ uint32_t decor; /* decoration (like underline) */
+ } Glyph;
+
+ typedef Glyph *Line;
+@@ -105,6 +119,8 @@ void selextend(int, int, int, int);
+ int selected(int, int);
+ char *getsel(void);
+
++Glyph getglyphat(int, int);
++
+ size_t utf8encode(Rune, char *);
+
+ void *xmalloc(size_t);
+@@ -124,3 +140,69 @@ extern unsigned int tabspaces;
+ extern unsigned int defaultfg;
+ extern unsigned int defaultbg;
+ extern unsigned int defaultcs;
++
++// Accessors to decoration properties stored in `decor`.
++// The 25-th bit is used to indicate if it's a 24-bit color.
++static inline uint32_t tgetdecorcolor(Glyph *g) { return g->decor & 0x1ffffff; }
++static inline uint32_t tgetdecorstyle(Glyph *g) { return (g->decor >> 25) & 0x7; }
++static inline void tsetdecorcolor(Glyph *g, uint32_t color) {
++ g->decor = (g->decor & ~0x1ffffff) | (color & 0x1ffffff);
++}
++static inline void tsetdecorstyle(Glyph *g, uint32_t style) {
++ g->decor = (g->decor & ~(0x7 << 25)) | ((style & 0x7) << 25);
++}
++
++
++// Some accessors to image placeholder properties stored in `u`:
++// - row (1-base) - 9 bits
++// - column (1-base) - 9 bits
++// - most significant byte of the image id plus 1 - 9 bits (0 means unspecified,
++// don't forget to subtract 1).
++// - the original number of diacritics (0, 1, 2, or 3) - 2 bits
++// - whether this is a classic (1) or Unicode (0) placeholder - 1 bit
++static inline uint32_t tgetimgrow(Glyph *g) { return g->u & 0x1ff; }
++static inline uint32_t tgetimgcol(Glyph *g) { return (g->u >> 9) & 0x1ff; }
++static inline uint32_t tgetimgid4thbyteplus1(Glyph *g) { return (g->u >> 18) & 0x1ff; }
++static inline uint32_t tgetimgdiacriticcount(Glyph *g) { return (g->u >> 27) & 0x3; }
++static inline uint32_t tgetisclassicplaceholder(Glyph *g) { return (g->u >> 29) & 0x1; }
++static inline void tsetimgrow(Glyph *g, uint32_t row) {
++ g->u = (g->u & ~0x1ff) | (row & 0x1ff);
++}
++static inline void tsetimgcol(Glyph *g, uint32_t col) {
++ g->u = (g->u & ~(0x1ff << 9)) | ((col & 0x1ff) << 9);
++}
++static inline void tsetimg4thbyteplus1(Glyph *g, uint32_t byteplus1) {
++ g->u = (g->u & ~(0x1ff << 18)) | ((byteplus1 & 0x1ff) << 18);
++}
++static inline void tsetimgdiacriticcount(Glyph *g, uint32_t count) {
++ g->u = (g->u & ~(0x3 << 27)) | ((count & 0x3) << 27);
++}
++static inline void tsetisclassicplaceholder(Glyph *g, uint32_t isclassic) {
++ g->u = (g->u & ~(0x1 << 29)) | ((isclassic & 0x1) << 29);
++}
++
++/// Returns the full image id. This is a naive implementation, if the most
++/// significant byte is not specified, it's assumed to be 0 instead of inferring
++/// it from the cells to the left.
++static inline uint32_t tgetimgid(Glyph *g) {
++ uint32_t msb = tgetimgid4thbyteplus1(g);
++ if (msb != 0)
++ --msb;
++ return (msb << 24) | (g->fg & 0xFFFFFF);
++}
++
++/// Sets the full image id.
++static inline void tsetimgid(Glyph *g, uint32_t id) {
++ g->fg = (id & 0xFFFFFF) | (1 << 24);
++ tsetimg4thbyteplus1(g, ((id >> 24) & 0xFF) + 1);
++}
++
++static inline uint32_t tgetimgplacementid(Glyph *g) {
++ if (tgetdecorcolor(g) == DECOR_DEFAULT_COLOR)
++ return 0;
++ return g->decor & 0xFFFFFF;
++}
++
++static inline void tsetimgplacementid(Glyph *g, uint32_t id) {
++ g->decor = (id & 0xFFFFFF) | (1 << 24);
++}
+diff --git a/st.info b/st.info
+index efab2cf..ded76c1 100644
+--- a/st.info
++++ b/st.info
+@@ -195,6 +195,7 @@ st-mono| simpleterm monocolor,
+ Ms=\E]52;%p1%s;%p2%s\007,
+ Se=\E[2 q,
+ Ss=\E[%p1%d q,
++ Smulx=\E[4:%p1%dm,
+
+ st| simpleterm,
+ use=st-mono,
+@@ -215,6 +216,11 @@ st-256color| simpleterm with 256 colors,
+ initc=\E]4;%p1%d;rgb\:%p2%{255}%*%{1000}%/%2.2X/%p3%{255}%*%{1000}%/%2.2X/%p4%{255}%*%{1000}%/%2.2X\E\\,
+ setab=\E[%?%p1%{8}%<%t4%p1%d%e%p1%{16}%<%t10%p1%{8}%-%d%e48;5;%p1%d%;m,
+ setaf=\E[%?%p1%{8}%<%t3%p1%d%e%p1%{16}%<%t9%p1%{8}%-%d%e38;5;%p1%d%;m,
++# Underline colors
++ Su,
++ Setulc=\E[58:2:%p1%{65536}%/%d:%p1%{256}%/%{255}%&%d:%p1%{255}%&%d%;m,
++ Setulc1=\E[58:5:%p1%dm,
++ ol=\E[59m,
+
+ st-meta| simpleterm with meta key,
+ use=st,
+diff --git a/win.h b/win.h
+index 6de960d..31b3fff 100644
+--- a/win.h
++++ b/win.h
+@@ -39,3 +39,6 @@ void xsetpointermotion(int);
+ void xsetsel(char *);
+ int xstartdraw(void);
+ void xximspot(int, int);
++
++void xstartimagedraw(int *dirty, int rows);
++void xfinishimagedraw();
+diff --git a/x.c b/x.c
+index d73152b..6f1bf8c 100644
+--- a/x.c
++++ b/x.c
+@@ -4,6 +4,8 @@
+ #include <limits.h>
+ #include <locale.h>
+ #include <signal.h>
++#include <stdio.h>
++#include <stdlib.h>
+ #include <sys/select.h>
+ #include <time.h>
+ #include <unistd.h>
+@@ -19,6 +21,7 @@ char *argv0;
+ #include "arg.h"
+ #include "st.h"
+ #include "win.h"
++#include "graphics.h"
+
+ /* types used in config.h */
+ typedef struct {
+@@ -59,6 +62,12 @@ static void zoom(const Arg *);
+ static void zoomabs(const Arg *);
+ static void zoomreset(const Arg *);
+ static void ttysend(const Arg *);
++static void previewimage(const Arg *);
++static void showimageinfo(const Arg *);
++static void togglegrdebug(const Arg *);
++static void dumpgrstate(const Arg *);
++static void unloadimages(const Arg *);
++static void toggleimages(const Arg *);
+
+ /* config.h for applying patches and the configuration. */
+ #include "config.h"
+@@ -81,6 +90,7 @@ typedef XftGlyphFontSpec GlyphFontSpec;
+ typedef struct {
+ int tw, th; /* tty width and height */
+ int w, h; /* window width and height */
++ int hborderpx, vborderpx;
+ int ch; /* char height */
+ int cw; /* char width */
+ int mode; /* window state/mode flags */
+@@ -144,6 +154,8 @@ static inline ushort sixd_to_16bit(int);
+ static int xmakeglyphfontspecs(XftGlyphFontSpec *, const Glyph *, int, int, int);
+ static void xdrawglyphfontspecs(const XftGlyphFontSpec *, Glyph, int, int, int);
+ static void xdrawglyph(Glyph, int, int);
++static void xdrawimages(Glyph, Line, int x1, int y1, int x2);
++static void xdrawoneimagecell(Glyph, int x, int y);
+ static void xclear(int, int, int, int);
+ static int xgeommasktogravity(int);
+ static int ximopen(Display *);
+@@ -220,6 +232,7 @@ static DC dc;
+ static XWindow xw;
+ static XSelection xsel;
+ static TermWindow win;
++static unsigned int mouse_col = 0, mouse_row = 0;
+
+ /* Font Ring Cache */
+ enum {
+@@ -328,10 +341,72 @@ ttysend(const Arg *arg)
+ ttywrite(arg->s, strlen(arg->s), 1);
+ }
+
++void
++previewimage(const Arg *arg)
++{
++ Glyph g = getglyphat(mouse_col, mouse_row);
++ if (g.mode & ATTR_IMAGE) {
++ uint32_t image_id = tgetimgid(&g);
++ fprintf(stderr, "Clicked on placeholder %u/%u, x=%d, y=%d\n",
++ image_id, tgetimgplacementid(&g), tgetimgcol(&g),
++ tgetimgrow(&g));
++ gr_preview_image(image_id, arg->s);
++ }
++}
++
++void
++showimageinfo(const Arg *arg)
++{
++ Glyph g = getglyphat(mouse_col, mouse_row);
++ if (g.mode & ATTR_IMAGE) {
++ uint32_t image_id = tgetimgid(&g);
++ fprintf(stderr, "Clicked on placeholder %u/%u, x=%d, y=%d\n",
++ image_id, tgetimgplacementid(&g), tgetimgcol(&g),
++ tgetimgrow(&g));
++ char stcommand[256] = {0};
++ size_t len = snprintf(stcommand, sizeof(stcommand), "%s -e less", argv0);
++ if (len > sizeof(stcommand) - 1) {
++ fprintf(stderr, "Executable name too long: %s\n",
++ argv0);
++ return;
++ }
++ gr_show_image_info(image_id, tgetimgplacementid(&g),
++ tgetimgcol(&g), tgetimgrow(&g),
++ tgetisclassicplaceholder(&g),
++ tgetimgdiacriticcount(&g), argv0);
++ }
++}
++
++void
++togglegrdebug(const Arg *arg)
++{
++ graphics_debug_mode = (graphics_debug_mode + 1) % 3;
++ redraw();
++}
++
++void
++dumpgrstate(const Arg *arg)
++{
++ gr_dump_state();
++}
++
++void
++unloadimages(const Arg *arg)
++{
++ gr_unload_images_to_reduce_ram();
++}
++
++void
++toggleimages(const Arg *arg)
++{
++ graphics_display_images = !graphics_display_images;
++ redraw();
++}
++
+ int
+ evcol(XEvent *e)
+ {
+- int x = e->xbutton.x - borderpx;
++ int x = e->xbutton.x - win.hborderpx;
+ LIMIT(x, 0, win.tw - 1);
+ return x / win.cw;
+ }
+@@ -339,7 +414,7 @@ evcol(XEvent *e)
+ int
+ evrow(XEvent *e)
+ {
+- int y = e->xbutton.y - borderpx;
++ int y = e->xbutton.y - win.vborderpx;
+ LIMIT(y, 0, win.th - 1);
+ return y / win.ch;
+ }
+@@ -452,6 +527,9 @@ mouseaction(XEvent *e, uint release)
+ /* ignore Button<N>mask for Button<N> - it's set on release */
+ uint state = e->xbutton.state & ~buttonmask(e->xbutton.button);
+
++ mouse_col = evcol(e);
++ mouse_row = evrow(e);
++
+ for (ms = mshortcuts; ms < mshortcuts + LEN(mshortcuts); ms++) {
+ if (ms->release == release &&
+ ms->button == e->xbutton.button &&
+@@ -739,6 +817,9 @@ cresize(int width, int height)
+ col = MAX(1, col);
+ row = MAX(1, row);
+
++ win.hborderpx = (win.w - col * win.cw) * anysize_halign / 100;
++ win.vborderpx = (win.h - row * win.ch) * anysize_valign / 100;
++
+ tresize(col, row);
+ xresize(col, row);
+ ttyresize(win.tw, win.th);
+@@ -869,8 +950,8 @@ xhints(void)
+ sizeh->flags = PSize | PResizeInc | PBaseSize | PMinSize;
+ sizeh->height = win.h;
+ sizeh->width = win.w;
+- sizeh->height_inc = win.ch;
+- sizeh->width_inc = win.cw;
++ sizeh->height_inc = 1;
++ sizeh->width_inc = 1;
+ sizeh->base_height = 2 * borderpx;
+ sizeh->base_width = 2 * borderpx;
+ sizeh->min_height = win.ch + 2 * borderpx;
+@@ -1014,7 +1095,8 @@ xloadfonts(const char *fontstr, double fontsize)
+ FcPatternAddDouble(pattern, FC_PIXEL_SIZE, 12);
+ usedfontsize = 12;
+ }
+- defaultfontsize = usedfontsize;
++ if (defaultfontsize <= 0)
++ defaultfontsize = usedfontsize;
+ }
+
+ if (xloadfont(&dc.font, pattern))
+@@ -1024,7 +1106,7 @@ xloadfonts(const char *fontstr, double fontsize)
+ FcPatternGetDouble(dc.font.match->pattern,
+ FC_PIXEL_SIZE, 0, &fontval);
+ usedfontsize = fontval;
+- if (fontsize == 0)
++ if (defaultfontsize <= 0 && fontsize == 0)
+ defaultfontsize = fontval;
+ }
+
+@@ -1152,8 +1234,8 @@ xinit(int cols, int rows)
+ xloadcols();
+
+ /* adjust fixed window geometry */
+- win.w = 2 * borderpx + cols * win.cw;
+- win.h = 2 * borderpx + rows * win.ch;
++ win.w = 2 * win.hborderpx + 2 * borderpx + cols * win.cw;
++ win.h = 2 * win.vborderpx + 2 * borderpx + rows * win.ch;
+ if (xw.gm & XNegative)
+ xw.l += DisplayWidth(xw.dpy, xw.scr) - win.w - 2;
+ if (xw.gm & YNegative)
+@@ -1240,12 +1322,15 @@ xinit(int cols, int rows)
+ xsel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
+ if (xsel.xtarget == None)
+ xsel.xtarget = XA_STRING;
++
++ // Initialize the graphics (image display) module.
++ gr_init(xw.dpy, xw.vis, xw.cmap);
+ }
+
+ int
+ xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int len, int x, int y)
+ {
+- float winx = borderpx + x * win.cw, winy = borderpx + y * win.ch, xp, yp;
++ float winx = win.hborderpx + x * win.cw, winy = win.vborderpx + y * win.ch, xp, yp;
+ ushort mode, prevmode = USHRT_MAX;
+ Font *font = &dc.font;
+ int frcflags = FRC_NORMAL;
+@@ -1267,6 +1352,11 @@ xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int len, int x
+ if (mode == ATTR_WDUMMY)
+ continue;
+
++ /* Draw spaces for image placeholders (images will be drawn
++ * separately). */
++ if (mode & ATTR_IMAGE)
++ rune = ' ';
++
+ /* Determine font for glyph if different from previous glyph. */
+ if (prevmode != mode) {
+ prevmode = mode;
+@@ -1374,11 +1464,61 @@ xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int len, int x
+ return numspecs;
+ }
+
++/* Draws a horizontal dashed line of length `w` starting at `(x, y)`. `wavelen`
++ * is the length of the dash plus the length of the gap. `fraction` is the
++ * fraction of the dash length compared to `wavelen`. */
++static void
++xdrawunderdashed(Draw draw, Color *color, int x, int y, int w,
++ int wavelen, float fraction, int thick)
++{
++ int dashw = MAX(1, fraction * wavelen);
++ for (int i = x - x % wavelen; i < x + w; i += wavelen) {
++ int startx = MAX(i, x);
++ int endx = MIN(i + dashw, x + w);
++ if (startx < endx)
++ XftDrawRect(xw.draw, color, startx, y, endx - startx,
++ thick);
++ }
++}
++
++/* Draws an undercurl. `h` is the total height, including line thickness. */
++static void
++xdrawundercurl(Draw draw, Color *color, int x, int y, int w, int h, int thick)
++{
++ XGCValues gcvals = {.foreground = color->pixel,
++ .line_width = thick,
++ .line_style = LineSolid,
++ .cap_style = CapRound};
++ GC gc = XCreateGC(xw.dpy, XftDrawDrawable(xw.draw),
++ GCForeground | GCLineWidth | GCLineStyle | GCCapStyle,
++ &gcvals);
++
++ XRectangle clip = {.x = x, .y = y, .width = w, .height = h};
++ XSetClipRectangles(xw.dpy, gc, 0, 0, &clip, 1, Unsorted);
++
++ int yoffset = thick / 2;
++ int segh = MAX(1, h - thick);
++ /* Make sure every segment is at a 45 degree angle, otherwise it doesn't
++ * look good without antialiasing. */
++ int segw = segh;
++ int wavelen = MAX(1, segw * 2);
++
++ for (int i = x - (x % wavelen); i < x + w; i += wavelen) {
++ XPoint points[3] = {{.x = i, .y = y + yoffset},
++ {.x = i + segw, .y = y + yoffset + segh},
++ {.x = i + wavelen, .y = y + yoffset}};
++ XDrawLines(xw.dpy, XftDrawDrawable(xw.draw), gc, points, 3,
++ CoordModeOrigin);
++ }
++
++ XFreeGC(xw.dpy, gc);
++}
++
+ void
+ xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len, int x, int y)
+ {
+ int charlen = len * ((base.mode & ATTR_WIDE) ? 2 : 1);
+- int winx = borderpx + x * win.cw, winy = borderpx + y * win.ch,
++ int winx = win.hborderpx + x * win.cw, winy = win.vborderpx + y * win.ch,
+ width = charlen * win.cw;
+ Color *fg, *bg, *temp, revfg, revbg, truefg, truebg;
+ XRenderColor colfg, colbg;
+@@ -1468,17 +1608,17 @@ xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len, int x, i
+
+ /* Intelligent cleaning up of the borders. */
+ if (x == 0) {
+- xclear(0, (y == 0)? 0 : winy, borderpx,
++ xclear(0, (y == 0)? 0 : winy, win.hborderpx,
+ winy + win.ch +
+- ((winy + win.ch >= borderpx + win.th)? win.h : 0));
++ ((winy + win.ch >= win.vborderpx + win.th)? win.h : 0));
+ }
+- if (winx + width >= borderpx + win.tw) {
++ if (winx + width >= win.hborderpx + win.tw) {
+ xclear(winx + width, (y == 0)? 0 : winy, win.w,
+- ((winy + win.ch >= borderpx + win.th)? win.h : (winy + win.ch)));
++ ((winy + win.ch >= win.vborderpx + win.th)? win.h : (winy + win.ch)));
+ }
+ if (y == 0)
+- xclear(winx, 0, winx + width, borderpx);
+- if (winy + win.ch >= borderpx + win.th)
++ xclear(winx, 0, winx + width, win.vborderpx);
++ if (winy + win.ch >= win.vborderpx + win.th)
+ xclear(winx, winy + win.ch, winx + width, win.h);
+
+ /* Clean up the region we want to draw to. */
+@@ -1491,18 +1631,68 @@ xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len, int x, i
+ r.width = width;
+ XftDrawSetClipRectangles(xw.draw, winx, winy, &r, 1);
+
+- /* Render the glyphs. */
+- XftDrawGlyphFontSpec(xw.draw, fg, specs, len);
+-
+- /* Render underline and strikethrough. */
++ /* Decoration color. */
++ Color decor;
++ uint32_t decorcolor = tgetdecorcolor(&base);
++ if (decorcolor == DECOR_DEFAULT_COLOR) {
++ decor = *fg;
++ } else if (IS_TRUECOL(decorcolor)) {
++ colfg.alpha = 0xffff;
++ colfg.red = TRUERED(decorcolor);
++ colfg.green = TRUEGREEN(decorcolor);
++ colfg.blue = TRUEBLUE(decorcolor);
++ XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &decor);
++ } else {
++ decor = dc.col[decorcolor];
++ }
++ decor.color.alpha = 0xffff;
++ decor.pixel |= 0xff << 24;
++
++ /* Float thickness, used as a base to compute other values. */
++ float fthick = dc.font.height / 18.0;
++ /* Integer thickness in pixels. Must not be 0. */
++ int thick = MAX(1, roundf(fthick));
++ /* The default gap between the baseline and a single underline. */
++ int gap = roundf(fthick * 2);
++ /* The total thickness of a double underline. */
++ int doubleh = thick * 2 + ceilf(fthick * 0.5);
++ /* The total thickness of an undercurl. */
++ int curlh = thick * 2 + roundf(fthick * 0.75);
++
++ /* Render the underline before the glyphs. */
+ if (base.mode & ATTR_UNDERLINE) {
+- XftDrawRect(xw.draw, fg, winx, winy + dc.font.ascent * chscale + 1,
+- width, 1);
++ uint32_t style = tgetdecorstyle(&base);
++ int liney = winy + dc.font.ascent + gap;
++ /* Adjust liney to guarantee that a single underline fits. */
++ liney -= MAX(0, liney + thick - (winy + win.ch));
++ if (style == UNDERLINE_DOUBLE) {
++ liney -= MAX(0, liney + doubleh - (winy + win.ch));
++ XftDrawRect(xw.draw, &decor, winx, liney, width, thick);
++ XftDrawRect(xw.draw, &decor, winx,
++ liney + doubleh - thick, width, thick);
++ } else if (style == UNDERLINE_DOTTED) {
++ xdrawunderdashed(xw.draw, &decor, winx, liney, width,
++ thick * 2, 0.5, thick);
++ } else if (style == UNDERLINE_DASHED) {
++ int wavelen = MAX(2, win.cw * 0.9);
++ xdrawunderdashed(xw.draw, &decor, winx, liney, width,
++ wavelen, 0.65, thick);
++ } else if (style == UNDERLINE_CURLY) {
++ liney -= MAX(0, liney + curlh - (winy + win.ch));
++ xdrawundercurl(xw.draw, &decor, winx, liney, width,
++ curlh, thick);
++ } else {
++ XftDrawRect(xw.draw, &decor, winx, liney, width, thick);
++ }
+ }
+
++ /* Render the glyphs. */
++ XftDrawGlyphFontSpec(xw.draw, fg, specs, len);
++
++ /* Render strikethrough. Alway use the fg color. */
+ if (base.mode & ATTR_STRUCK) {
+- XftDrawRect(xw.draw, fg, winx, winy + 2 * dc.font.ascent * chscale / 3,
+- width, 1);
++ XftDrawRect(xw.draw, fg, winx, winy + 2 * dc.font.ascent / 3,
++ width, thick);
+ }
+
+ /* Reset clip to none. */
+@@ -1517,6 +1707,11 @@ xdrawglyph(Glyph g, int x, int y)
+
+ numspecs = xmakeglyphfontspecs(&spec, &g, 1, x, y);
+ xdrawglyphfontspecs(&spec, g, numspecs, x, y);
++ if (g.mode & ATTR_IMAGE) {
++ gr_start_drawing(xw.buf, win.cw, win.ch);
++ xdrawoneimagecell(g, x, y);
++ gr_finish_drawing(xw.buf);
++ }
+ }
+
+ void
+@@ -1532,6 +1727,10 @@ xdrawcursor(int cx, int cy, Glyph g, int ox, int oy, Glyph og)
+ if (IS_SET(MODE_HIDE))
+ return;
+
++ // If it's an image, just draw a ballot box for simplicity.
++ if (g.mode & ATTR_IMAGE)
++ g.u = 0x2610;
++
+ /*
+ * Select the right color for the right mode.
+ */
+@@ -1572,39 +1771,167 @@ xdrawcursor(int cx, int cy, Glyph g, int ox, int oy, Glyph og)
+ case 3: /* Blinking Underline */
+ case 4: /* Steady Underline */
+ XftDrawRect(xw.draw, &drawcol,
+- borderpx + cx * win.cw,
+- borderpx + (cy + 1) * win.ch - \
++ win.hborderpx + cx * win.cw,
++ win.vborderpx + (cy + 1) * win.ch - \
+ cursorthickness,
+ win.cw, cursorthickness);
+ break;
+ case 5: /* Blinking bar */
+ case 6: /* Steady bar */
+ XftDrawRect(xw.draw, &drawcol,
+- borderpx + cx * win.cw,
+- borderpx + cy * win.ch,
++ win.hborderpx + cx * win.cw,
++ win.vborderpx + cy * win.ch,
+ cursorthickness, win.ch);
+ break;
+ }
+ } else {
+ XftDrawRect(xw.draw, &drawcol,
+- borderpx + cx * win.cw,
+- borderpx + cy * win.ch,
++ win.hborderpx + cx * win.cw,
++ win.vborderpx + cy * win.ch,
+ win.cw - 1, 1);
+ XftDrawRect(xw.draw, &drawcol,
+- borderpx + cx * win.cw,
+- borderpx + cy * win.ch,
++ win.hborderpx + cx * win.cw,
++ win.vborderpx + cy * win.ch,
+ 1, win.ch - 1);
+ XftDrawRect(xw.draw, &drawcol,
+- borderpx + (cx + 1) * win.cw - 1,
+- borderpx + cy * win.ch,
++ win.hborderpx + (cx + 1) * win.cw - 1,
++ win.vborderpx + cy * win.ch,
+ 1, win.ch - 1);
+ XftDrawRect(xw.draw, &drawcol,
+- borderpx + cx * win.cw,
+- borderpx + (cy + 1) * win.ch - 1,
++ win.hborderpx + cx * win.cw,
++ win.vborderpx + (cy + 1) * win.ch - 1,
+ win.cw, 1);
+ }
+ }
+
++/* Draw (or queue for drawing) image cells between columns x1 and x2 assuming
++ * that they have the same attributes (and thus the same lower 24 bits of the
++ * image ID and the same placement ID). */
++void
++xdrawimages(Glyph base, Line line, int x1, int y1, int x2) {
++ int y_pix = win.vborderpx + y1 * win.ch;
++ uint32_t image_id_24bits = base.fg & 0xFFFFFF;
++ uint32_t placement_id = tgetimgplacementid(&base);
++ // Columns and rows are 1-based, 0 means unspecified.
++ int last_col = 0;
++ int last_row = 0;
++ int last_start_col = 0;
++ int last_start_x = x1;
++ // The most significant byte is also 1-base, subtract 1 before use.
++ uint32_t last_id_4thbyteplus1 = 0;
++ // We may need to inherit row/column/4th byte from the previous cell.
++ Glyph *prev = &line[x1 - 1];
++ if (x1 > 0 && (prev->mode & ATTR_IMAGE) &&
++ (prev->fg & 0xFFFFFF) == image_id_24bits &&
++ prev->decor == base.decor) {
++ last_row = tgetimgrow(prev);
++ last_col = tgetimgcol(prev);
++ last_id_4thbyteplus1 = tgetimgid4thbyteplus1(prev);
++ last_start_col = last_col + 1;
++ }
++ for (int x = x1; x < x2; ++x) {
++ Glyph *g = &line[x];
++ uint32_t cur_row = tgetimgrow(g);
++ uint32_t cur_col = tgetimgcol(g);
++ uint32_t cur_id_4thbyteplus1 = tgetimgid4thbyteplus1(g);
++ uint32_t num_diacritics = tgetimgdiacriticcount(g);
++ // If the row is not specified, assume it's the same as the row
++ // of the previous cell. Note that `cur_row` may contain a
++ // value imputed earlier, which will be preserved if `last_row`
++ // is zero (i.e. we don't know the row of the previous cell).
++ if (last_row && (num_diacritics == 0 || !cur_row))
++ cur_row = last_row;
++ // If the column is not specified and the row is the same as the
++ // row of the previous cell, then assume that the column is the
++ // next one.
++ if (last_col && (num_diacritics <= 1 || !cur_col) &&
++ cur_row == last_row)
++ cur_col = last_col + 1;
++ // If the additional id byte is not specified and the
++ // coordinates are consecutive, assume the byte is also the
++ // same.
++ if (last_id_4thbyteplus1 &&
++ (num_diacritics <= 2 || !cur_id_4thbyteplus1) &&
++ cur_row == last_row && cur_col == last_col + 1)
++ cur_id_4thbyteplus1 = last_id_4thbyteplus1;
++ // If we couldn't infer row and column, start from the top left
++ // corner.
++ if (cur_row == 0)
++ cur_row = 1;
++ if (cur_col == 0)
++ cur_col = 1;
++ // If this cell breaks a contiguous stripe of image cells, draw
++ // that line and start a new one.
++ if (cur_col != last_col + 1 || cur_row != last_row ||
++ cur_id_4thbyteplus1 != last_id_4thbyteplus1) {
++ uint32_t image_id = image_id_24bits;
++ if (last_id_4thbyteplus1)
++ image_id |= (last_id_4thbyteplus1 - 1) << 24;
++ if (last_row != 0) {
++ int x_pix =
++ win.hborderpx + last_start_x * win.cw;
++ gr_append_imagerect(
++ xw.buf, image_id, placement_id,
++ last_start_col - 1, last_col,
++ last_row - 1, last_row, last_start_x,
++ y1, x_pix, y_pix, win.cw, win.ch,
++ base.mode & ATTR_REVERSE);
++ }
++ last_start_col = cur_col;
++ last_start_x = x;
++ }
++ last_row = cur_row;
++ last_col = cur_col;
++ last_id_4thbyteplus1 = cur_id_4thbyteplus1;
++ // Populate the missing glyph data to enable inheritance between
++ // runs and support the naive implementation of tgetimgid.
++ if (!tgetimgrow(g))
++ tsetimgrow(g, cur_row);
++ // We cannot save this information if there are > 511 cols.
++ if (!tgetimgcol(g) && (cur_col & ~0x1ff) == 0)
++ tsetimgcol(g, cur_col);
++ if (!tgetimgid4thbyteplus1(g))
++ tsetimg4thbyteplus1(g, cur_id_4thbyteplus1);
++ }
++ uint32_t image_id = image_id_24bits;
++ if (last_id_4thbyteplus1)
++ image_id |= (last_id_4thbyteplus1 - 1) << 24;
++ // Draw the last contiguous stripe.
++ if (last_row != 0) {
++ int x_pix = win.hborderpx + last_start_x * win.cw;
++ gr_append_imagerect(xw.buf, image_id, placement_id,
++ last_start_col - 1, last_col, last_row - 1,
++ last_row, last_start_x, y1, x_pix, y_pix,
++ win.cw, win.ch, base.mode & ATTR_REVERSE);
++ }
++}
++
++/* Draw just one image cell without inheriting attributes from the left. */
++void xdrawoneimagecell(Glyph g, int x, int y) {
++ if (!(g.mode & ATTR_IMAGE))
++ return;
++ int x_pix = win.hborderpx + x * win.cw;
++ int y_pix = win.vborderpx + y * win.ch;
++ uint32_t row = tgetimgrow(&g) - 1;
++ uint32_t col = tgetimgcol(&g) - 1;
++ uint32_t placement_id = tgetimgplacementid(&g);
++ uint32_t image_id = tgetimgid(&g);
++ gr_append_imagerect(xw.buf, image_id, placement_id, col, col + 1, row,
++ row + 1, x, y, x_pix, y_pix, win.cw, win.ch,
++ g.mode & ATTR_REVERSE);
++}
++
++/* Prepare for image drawing. */
++void xstartimagedraw(int *dirty, int rows) {
++ gr_start_drawing(xw.buf, win.cw, win.ch);
++ gr_mark_dirty_animations(dirty, rows);
++}
++
++/* Draw all queued image cells. */
++void xfinishimagedraw() {
++ gr_finish_drawing(xw.buf);
++}
++
+ void
+ xsetenv(void)
+ {
+@@ -1671,6 +1998,8 @@ xdrawline(Line line, int x1, int y1, int x2)
+ new.mode ^= ATTR_REVERSE;
+ if (i > 0 && ATTRCMP(base, new)) {
+ xdrawglyphfontspecs(specs, base, i, ox, y1);
++ if (base.mode & ATTR_IMAGE)
++ xdrawimages(base, line, ox, y1, x);
+ specs += i;
+ numspecs -= i;
+ i = 0;
+@@ -1683,6 +2012,8 @@ xdrawline(Line line, int x1, int y1, int x2)
+ }
+ if (i > 0)
+ xdrawglyphfontspecs(specs, base, i, ox, y1);
++ if (i > 0 && base.mode & ATTR_IMAGE)
++ xdrawimages(base, line, ox, y1, x);
+ }
+
+ void
+@@ -1907,6 +2238,7 @@ cmessage(XEvent *e)
+ }
+ } else if (e->xclient.data.l[0] == xw.wmdeletewin) {
+ ttyhangup();
++ gr_deinit();
+ exit(0);
+ }
+ }
+@@ -1957,6 +2289,13 @@ run(void)
+ if (XPending(xw.dpy))
+ timeout = 0; /* existing events might not set xfd */
+
++ /* Decrease the timeout if there are active animations. */
++ if (graphics_next_redraw_delay != INT_MAX &&
++ IS_SET(MODE_VISIBLE))
++ timeout = timeout < 0 ? graphics_next_redraw_delay
++ : MIN(timeout,
++ graphics_next_redraw_delay);
++
+ seltv.tv_sec = timeout / 1E3;
+ seltv.tv_nsec = 1E6 * (timeout - 1E3 * seltv.tv_sec);
+ tv = timeout >= 0 ? &seltv : NULL;
+--
+2.43.0
+
diff --git a/st/st-scrollback-20210507-4536f46.diff b/st/st-scrollback-20210507-4536f46.diff
@@ -0,0 +1,351 @@
+diff --git a/config.def.h b/config.def.h
+index 6f05dce..93cbcc0 100644
+--- a/config.def.h
++++ b/config.def.h
+@@ -199,6 +199,8 @@ static Shortcut shortcuts[] = {
+ { TERMMOD, XK_Y, selpaste, {.i = 0} },
+ { ShiftMask, XK_Insert, selpaste, {.i = 0} },
+ { TERMMOD, XK_Num_Lock, numlock, {.i = 0} },
++ { ShiftMask, XK_Page_Up, kscrollup, {.i = -1} },
++ { ShiftMask, XK_Page_Down, kscrolldown, {.i = -1} },
+ };
+
+ /*
+diff --git a/st.c b/st.c
+index ebdf360..817cc47 100644
+--- a/st.c
++++ b/st.c
+@@ -35,6 +35,7 @@
+ #define ESC_ARG_SIZ 16
+ #define STR_BUF_SIZ ESC_BUF_SIZ
+ #define STR_ARG_SIZ ESC_ARG_SIZ
++#define HISTSIZE 2000
+
+ /* macros */
+ #define IS_SET(flag) ((term.mode & (flag)) != 0)
+@@ -42,6 +43,9 @@
+ #define ISCONTROLC1(c) (BETWEEN(c, 0x80, 0x9f))
+ #define ISCONTROL(c) (ISCONTROLC0(c) || ISCONTROLC1(c))
+ #define ISDELIM(u) (u && wcschr(worddelimiters, u))
++#define TLINE(y) ((y) < term.scr ? term.hist[((y) + term.histi - \
++ term.scr + HISTSIZE + 1) % HISTSIZE] : \
++ term.line[(y) - term.scr])
+
+ enum term_mode {
+ MODE_WRAP = 1 << 0,
+@@ -115,6 +119,9 @@ typedef struct {
+ int col; /* nb col */
+ Line *line; /* screen */
+ Line *alt; /* alternate screen */
++ Line hist[HISTSIZE]; /* history buffer */
++ int histi; /* history index */
++ int scr; /* scroll back */
+ int *dirty; /* dirtyness of lines */
+ TCursor c; /* cursor */
+ int ocx; /* old cursor col */
+@@ -184,8 +191,8 @@ static void tnewline(int);
+ static void tputtab(int);
+ static void tputc(Rune);
+ static void treset(void);
+-static void tscrollup(int, int);
+-static void tscrolldown(int, int);
++static void tscrollup(int, int, int);
++static void tscrolldown(int, int, int);
+ static void tsetattr(const int *, int);
+ static void tsetchar(Rune, const Glyph *, int, int);
+ static void tsetdirt(int, int);
+@@ -416,10 +423,10 @@ tlinelen(int y)
+ {
+ int i = term.col;
+
+- if (term.line[y][i - 1].mode & ATTR_WRAP)
++ if (TLINE(y)[i - 1].mode & ATTR_WRAP)
+ return i;
+
+- while (i > 0 && term.line[y][i - 1].u == ' ')
++ while (i > 0 && TLINE(y)[i - 1].u == ' ')
+ --i;
+
+ return i;
+@@ -528,7 +535,7 @@ selsnap(int *x, int *y, int direction)
+ * Snap around if the word wraps around at the end or
+ * beginning of a line.
+ */
+- prevgp = &term.line[*y][*x];
++ prevgp = &TLINE(*y)[*x];
+ prevdelim = ISDELIM(prevgp->u);
+ for (;;) {
+ newx = *x + direction;
+@@ -543,14 +550,14 @@ selsnap(int *x, int *y, int direction)
+ yt = *y, xt = *x;
+ else
+ yt = newy, xt = newx;
+- if (!(term.line[yt][xt].mode & ATTR_WRAP))
++ if (!(TLINE(yt)[xt].mode & ATTR_WRAP))
+ break;
+ }
+
+ if (newx >= tlinelen(newy))
+ break;
+
+- gp = &term.line[newy][newx];
++ gp = &TLINE(newy)[newx];
+ delim = ISDELIM(gp->u);
+ if (!(gp->mode & ATTR_WDUMMY) && (delim != prevdelim
+ || (delim && gp->u != prevgp->u)))
+@@ -571,14 +578,14 @@ selsnap(int *x, int *y, int direction)
+ *x = (direction < 0) ? 0 : term.col - 1;
+ if (direction < 0) {
+ for (; *y > 0; *y += direction) {
+- if (!(term.line[*y-1][term.col-1].mode
++ if (!(TLINE(*y-1)[term.col-1].mode
+ & ATTR_WRAP)) {
+ break;
+ }
+ }
+ } else if (direction > 0) {
+ for (; *y < term.row-1; *y += direction) {
+- if (!(term.line[*y][term.col-1].mode
++ if (!(TLINE(*y)[term.col-1].mode
+ & ATTR_WRAP)) {
+ break;
+ }
+@@ -609,13 +616,13 @@ getsel(void)
+ }
+
+ if (sel.type == SEL_RECTANGULAR) {
+- gp = &term.line[y][sel.nb.x];
++ gp = &TLINE(y)[sel.nb.x];
+ lastx = sel.ne.x;
+ } else {
+- gp = &term.line[y][sel.nb.y == y ? sel.nb.x : 0];
++ gp = &TLINE(y)[sel.nb.y == y ? sel.nb.x : 0];
+ lastx = (sel.ne.y == y) ? sel.ne.x : term.col-1;
+ }
+- last = &term.line[y][MIN(lastx, linelen-1)];
++ last = &TLINE(y)[MIN(lastx, linelen-1)];
+ while (last >= gp && last->u == ' ')
+ --last;
+
+@@ -850,6 +857,9 @@ void
+ ttywrite(const char *s, size_t n, int may_echo)
+ {
+ const char *next;
++ Arg arg = (Arg) { .i = term.scr };
++
++ kscrolldown(&arg);
+
+ if (may_echo && IS_SET(MODE_ECHO))
+ twrite(s, n, 1);
+@@ -1061,13 +1071,53 @@ tswapscreen(void)
+ }
+
+ void
+-tscrolldown(int orig, int n)
++kscrolldown(const Arg* a)
++{
++ int n = a->i;
++
++ if (n < 0)
++ n = term.row + n;
++
++ if (n > term.scr)
++ n = term.scr;
++
++ if (term.scr > 0) {
++ term.scr -= n;
++ selscroll(0, -n);
++ tfulldirt();
++ }
++}
++
++void
++kscrollup(const Arg* a)
++{
++ int n = a->i;
++
++ if (n < 0)
++ n = term.row + n;
++
++ if (term.scr <= HISTSIZE-n) {
++ term.scr += n;
++ selscroll(0, n);
++ tfulldirt();
++ }
++}
++
++void
++tscrolldown(int orig, int n, int copyhist)
+ {
+ int i;
+ Line temp;
+
+ LIMIT(n, 0, term.bot-orig+1);
+
++ if (copyhist) {
++ term.histi = (term.histi - 1 + HISTSIZE) % HISTSIZE;
++ temp = term.hist[term.histi];
++ term.hist[term.histi] = term.line[term.bot];
++ term.line[term.bot] = temp;
++ }
++
+ tsetdirt(orig, term.bot-n);
+ tclearregion(0, term.bot-n+1, term.col-1, term.bot);
+
+@@ -1077,17 +1127,28 @@ tscrolldown(int orig, int n)
+ term.line[i-n] = temp;
+ }
+
+- selscroll(orig, n);
++ if (term.scr == 0)
++ selscroll(orig, n);
+ }
+
+ void
+-tscrollup(int orig, int n)
++tscrollup(int orig, int n, int copyhist)
+ {
+ int i;
+ Line temp;
+
+ LIMIT(n, 0, term.bot-orig+1);
+
++ if (copyhist) {
++ term.histi = (term.histi + 1) % HISTSIZE;
++ temp = term.hist[term.histi];
++ term.hist[term.histi] = term.line[orig];
++ term.line[orig] = temp;
++ }
++
++ if (term.scr > 0 && term.scr < HISTSIZE)
++ term.scr = MIN(term.scr + n, HISTSIZE-1);
++
+ tclearregion(0, orig, term.col-1, orig+n-1);
+ tsetdirt(orig+n, term.bot);
+
+@@ -1097,7 +1158,8 @@ tscrollup(int orig, int n)
+ term.line[i+n] = temp;
+ }
+
+- selscroll(orig, -n);
++ if (term.scr == 0)
++ selscroll(orig, -n);
+ }
+
+ void
+@@ -1126,7 +1188,7 @@ tnewline(int first_col)
+ int y = term.c.y;
+
+ if (y == term.bot) {
+- tscrollup(term.top, 1);
++ tscrollup(term.top, 1, 1);
+ } else {
+ y++;
+ }
+@@ -1291,14 +1353,14 @@ void
+ tinsertblankline(int n)
+ {
+ if (BETWEEN(term.c.y, term.top, term.bot))
+- tscrolldown(term.c.y, n);
++ tscrolldown(term.c.y, n, 0);
+ }
+
+ void
+ tdeleteline(int n)
+ {
+ if (BETWEEN(term.c.y, term.top, term.bot))
+- tscrollup(term.c.y, n);
++ tscrollup(term.c.y, n, 0);
+ }
+
+ int32_t
+@@ -1735,11 +1797,11 @@ csihandle(void)
+ break;
+ case 'S': /* SU -- Scroll <n> line up */
+ DEFAULT(csiescseq.arg[0], 1);
+- tscrollup(term.top, csiescseq.arg[0]);
++ tscrollup(term.top, csiescseq.arg[0], 0);
+ break;
+ case 'T': /* SD -- Scroll <n> line down */
+ DEFAULT(csiescseq.arg[0], 1);
+- tscrolldown(term.top, csiescseq.arg[0]);
++ tscrolldown(term.top, csiescseq.arg[0], 0);
+ break;
+ case 'L': /* IL -- Insert <n> blank lines */
+ DEFAULT(csiescseq.arg[0], 1);
+@@ -2251,7 +2313,7 @@ eschandle(uchar ascii)
+ return 0;
+ case 'D': /* IND -- Linefeed */
+ if (term.c.y == term.bot) {
+- tscrollup(term.top, 1);
++ tscrollup(term.top, 1, 1);
+ } else {
+ tmoveto(term.c.x, term.c.y+1);
+ }
+@@ -2264,7 +2326,7 @@ eschandle(uchar ascii)
+ break;
+ case 'M': /* RI -- Reverse index */
+ if (term.c.y == term.top) {
+- tscrolldown(term.top, 1);
++ tscrolldown(term.top, 1, 1);
+ } else {
+ tmoveto(term.c.x, term.c.y-1);
+ }
+@@ -2474,7 +2536,7 @@ twrite(const char *buf, int buflen, int show_ctrl)
+ void
+ tresize(int col, int row)
+ {
+- int i;
++ int i, j;
+ int minrow = MIN(row, term.row);
+ int mincol = MIN(col, term.col);
+ int *bp;
+@@ -2511,6 +2573,14 @@ tresize(int col, int row)
+ term.dirty = xrealloc(term.dirty, row * sizeof(*term.dirty));
+ term.tabs = xrealloc(term.tabs, col * sizeof(*term.tabs));
+
++ for (i = 0; i < HISTSIZE; i++) {
++ term.hist[i] = xrealloc(term.hist[i], col * sizeof(Glyph));
++ for (j = mincol; j < col; j++) {
++ term.hist[i][j] = term.c.attr;
++ term.hist[i][j].u = ' ';
++ }
++ }
++
+ /* resize each row to new width, zero-pad if needed */
+ for (i = 0; i < minrow; i++) {
+ term.line[i] = xrealloc(term.line[i], col * sizeof(Glyph));
+@@ -2569,7 +2639,7 @@ drawregion(int x1, int y1, int x2, int y2)
+ continue;
+
+ term.dirty[y] = 0;
+- xdrawline(term.line[y], x1, y, x2);
++ xdrawline(TLINE(y), x1, y, x2);
+ }
+ }
+
+@@ -2590,8 +2660,9 @@ draw(void)
+ cx--;
+
+ drawregion(0, 0, term.col, term.row);
+- xdrawcursor(cx, term.c.y, term.line[term.c.y][cx],
+- term.ocx, term.ocy, term.line[term.ocy][term.ocx]);
++ if (term.scr == 0)
++ xdrawcursor(cx, term.c.y, term.line[term.c.y][cx],
++ term.ocx, term.ocy, term.line[term.ocy][term.ocx]);
+ term.ocx = cx;
+ term.ocy = term.c.y;
+ xfinishdraw();
+diff --git a/st.h b/st.h
+index fa2eddf..adda2db 100644
+--- a/st.h
++++ b/st.h
+@@ -81,6 +81,8 @@ void die(const char *, ...);
+ void redraw(void);
+ void draw(void);
+
++void kscrolldown(const Arg *);
++void kscrollup(const Arg *);
+ void printscreen(const Arg *);
+ void printsel(const Arg *);
+ void sendbreak(const Arg *);
diff --git a/st/st.1 b/st/st.1
@@ -0,0 +1,177 @@
+.TH ST 1 st\-VERSION
+.SH NAME
+st \- simple terminal
+.SH SYNOPSIS
+.B st
+.RB [ \-aiv ]
+.RB [ \-c
+.IR class ]
+.RB [ \-f
+.IR font ]
+.RB [ \-g
+.IR geometry ]
+.RB [ \-n
+.IR name ]
+.RB [ \-o
+.IR iofile ]
+.RB [ \-T
+.IR title ]
+.RB [ \-t
+.IR title ]
+.RB [ \-l
+.IR line ]
+.RB [ \-w
+.IR windowid ]
+.RB [[ \-e ]
+.IR command
+.RI [ arguments ...]]
+.PP
+.B st
+.RB [ \-aiv ]
+.RB [ \-c
+.IR class ]
+.RB [ \-f
+.IR font ]
+.RB [ \-g
+.IR geometry ]
+.RB [ \-n
+.IR name ]
+.RB [ \-o
+.IR iofile ]
+.RB [ \-T
+.IR title ]
+.RB [ \-t
+.IR title ]
+.RB [ \-w
+.IR windowid ]
+.RB \-l
+.IR line
+.RI [ stty_args ...]
+.SH DESCRIPTION
+.B st
+is a simple terminal emulator.
+.SH OPTIONS
+.TP
+.B \-a
+disable alternate screens in terminal
+.TP
+.BI \-c " class"
+defines the window class (default $TERM).
+.TP
+.BI \-f " font"
+defines the
+.I font
+to use when st is run.
+.TP
+.BI \-g " geometry"
+defines the X11 geometry string.
+The form is [=][<cols>{xX}<rows>][{+-}<xoffset>{+-}<yoffset>]. See
+.BR XParseGeometry (3)
+for further details.
+.TP
+.B \-i
+will fixate the position given with the -g option.
+.TP
+.BI \-n " name"
+defines the window instance name (default $TERM).
+.TP
+.BI \-o " iofile"
+writes all the I/O to
+.I iofile.
+This feature is useful when recording st sessions. A value of "-" means
+standard output.
+.TP
+.BI \-T " title"
+defines the window title (default 'st').
+.TP
+.BI \-t " title"
+defines the window title (default 'st').
+.TP
+.BI \-w " windowid"
+embeds st within the window identified by
+.I windowid
+.TP
+.BI \-l " line"
+use a tty
+.I line
+instead of a pseudo terminal.
+.I line
+should be a (pseudo-)serial device (e.g. /dev/ttyS0 on Linux for serial port
+0).
+When this flag is given
+remaining arguments are used as flags for
+.BR stty(1).
+By default st initializes the serial line to 8 bits, no parity, 1 stop bit
+and a 38400 baud rate. The speed is set by appending it as last argument
+(e.g. 'st -l /dev/ttyS0 115200'). Arguments before the last one are
+.BR stty(1)
+flags. If you want to set odd parity on 115200 baud use for example 'st -l
+/dev/ttyS0 parenb parodd 115200'. Set the number of bits by using for
+example 'st -l /dev/ttyS0 cs7 115200'. See
+.BR stty(1)
+for more arguments and cases.
+.TP
+.B \-v
+prints version information to stderr, then exits.
+.TP
+.BI \-e " command " [ " arguments " "... ]"
+st executes
+.I command
+instead of the shell. If this is used it
+.B must be the last option
+on the command line, as in xterm / rxvt.
+This option is only intended for compatibility,
+and all the remaining arguments are used as a command
+even without it.
+.SH SHORTCUTS
+.TP
+.B Break
+Send a break in the serial line.
+Break key is obtained in PC keyboards
+pressing at the same time control and pause.
+.TP
+.B Ctrl-Print Screen
+Toggle if st should print to the
+.I iofile.
+.TP
+.B Shift-Print Screen
+Print the full screen to the
+.I iofile.
+.TP
+.B Print Screen
+Print the selection to the
+.I iofile.
+.TP
+.B Ctrl-Shift-Page Up
+Increase font size.
+.TP
+.B Ctrl-Shift-Page Down
+Decrease font size.
+.TP
+.B Ctrl-Shift-Home
+Reset to default font size.
+.TP
+.B Ctrl-Shift-y
+Paste from primary selection (middle mouse button).
+.TP
+.B Ctrl-Shift-c
+Copy the selected text to the clipboard selection.
+.TP
+.B Ctrl-Shift-v
+Paste from the clipboard selection.
+.SH CUSTOMIZATION
+.B st
+can be customized by creating a custom config.h and (re)compiling the source
+code. This keeps it fast, secure and simple.
+.SH AUTHORS
+See the LICENSE file for the authors.
+.SH LICENSE
+See the LICENSE file for the terms of redistribution.
+.SH SEE ALSO
+.BR tabbed (1),
+.BR utmp (1),
+.BR stty (1),
+.BR scroll (1)
+.SH BUGS
+See the TODO file in the distribution.
+
diff --git a/st/st.c b/st/st.c
@@ -0,0 +1,3008 @@
+/* See LICENSE for license details. */
+#include <ctype.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <pwd.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <signal.h>
+#include <sys/ioctl.h>
+#include <sys/select.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <termios.h>
+#include <unistd.h>
+#include <wchar.h>
+
+#include "st.h"
+#include "win.h"
+#include "graphics.h"
+
+#if defined(__linux)
+ #include <pty.h>
+#elif defined(__OpenBSD__) || defined(__NetBSD__) || defined(__APPLE__)
+ #include <util.h>
+#elif defined(__FreeBSD__) || defined(__DragonFly__)
+ #include <libutil.h>
+#endif
+
+/* Arbitrary sizes */
+#define UTF_INVALID 0xFFFD
+#define UTF_SIZ 4
+#define ESC_BUF_SIZ (128*UTF_SIZ)
+#define ESC_ARG_SIZ 16
+#define STR_BUF_SIZ ESC_BUF_SIZ
+#define STR_ARG_SIZ ESC_ARG_SIZ
+#define HISTSIZE 2000
+
+/* PUA character used as an image placeholder */
+#define IMAGE_PLACEHOLDER_CHAR 0x10EEEE
+#define IMAGE_PLACEHOLDER_CHAR_OLD 0xEEEE
+
+/* macros */
+#define IS_SET(flag) ((term.mode & (flag)) != 0)
+#define ISCONTROLC0(c) (BETWEEN(c, 0, 0x1f) || (c) == 0x7f)
+#define ISCONTROLC1(c) (BETWEEN(c, 0x80, 0x9f))
+#define ISCONTROL(c) (ISCONTROLC0(c) || ISCONTROLC1(c))
+#define ISDELIM(u) (u && wcschr(worddelimiters, u))
+#define TLINE(y) ((y) < term.scr ? term.hist[((y) + term.histi - \
+ term.scr + HISTSIZE + 1) % HISTSIZE] : \
+ term.line[(y) - term.scr])
+
+enum term_mode {
+ MODE_WRAP = 1 << 0,
+ MODE_INSERT = 1 << 1,
+ MODE_ALTSCREEN = 1 << 2,
+ MODE_CRLF = 1 << 3,
+ MODE_ECHO = 1 << 4,
+ MODE_PRINT = 1 << 5,
+ MODE_UTF8 = 1 << 6,
+};
+
+enum cursor_movement {
+ CURSOR_SAVE,
+ CURSOR_LOAD
+};
+
+enum cursor_state {
+ CURSOR_DEFAULT = 0,
+ CURSOR_WRAPNEXT = 1,
+ CURSOR_ORIGIN = 2
+};
+
+enum charset {
+ CS_GRAPHIC0,
+ CS_GRAPHIC1,
+ CS_UK,
+ CS_USA,
+ CS_MULTI,
+ CS_GER,
+ CS_FIN
+};
+
+enum escape_state {
+ ESC_START = 1,
+ ESC_CSI = 2,
+ ESC_STR = 4, /* DCS, OSC, PM, APC */
+ ESC_ALTCHARSET = 8,
+ ESC_STR_END = 16, /* a final string was encountered */
+ ESC_TEST = 32, /* Enter in test mode */
+ ESC_UTF8 = 64,
+};
+
+typedef struct {
+ Glyph attr; /* current char attributes */
+ int x;
+ int y;
+ char state;
+} TCursor;
+
+typedef struct {
+ int mode;
+ int type;
+ int snap;
+ /*
+ * Selection variables:
+ * nb – normalized coordinates of the beginning of the selection
+ * ne – normalized coordinates of the end of the selection
+ * ob – original coordinates of the beginning of the selection
+ * oe – original coordinates of the end of the selection
+ */
+ struct {
+ int x, y;
+ } nb, ne, ob, oe;
+
+ int alt;
+} Selection;
+
+/* Internal representation of the screen */
+typedef struct {
+ int row; /* nb row */
+ int col; /* nb col */
+ int pixw; /* width of the text area in pixels */
+ int pixh; /* height of the text area in pixels */
+ Line *line; /* screen */
+ Line *alt; /* alternate screen */
+ Line hist[HISTSIZE]; /* history buffer */
+ int histi; /* history index */
+ int scr; /* scroll back */
+ int *dirty; /* dirtyness of lines */
+ TCursor c; /* cursor */
+ int ocx; /* old cursor col */
+ int ocy; /* old cursor row */
+ int top; /* top scroll limit */
+ int bot; /* bottom scroll limit */
+ int mode; /* terminal mode flags */
+ int esc; /* escape state flags */
+ char trantbl[4]; /* charset table translation */
+ int charset; /* current charset */
+ int icharset; /* selected charset for sequence */
+ int *tabs;
+ Rune lastc; /* last printed char outside of sequence, 0 if control */
+} Term;
+
+/* CSI Escape sequence structs */
+/* ESC '[' [[ [<priv>] <arg> [;]] <mode> [<mode>]] */
+typedef struct {
+ char buf[ESC_BUF_SIZ]; /* raw string */
+ size_t len; /* raw string length */
+ char priv;
+ int arg[ESC_ARG_SIZ];
+ int narg; /* nb of args */
+ char mode[2];
+} CSIEscape;
+
+/* STR Escape sequence structs */
+/* ESC type [[ [<priv>] <arg> [;]] <mode>] ESC '\' */
+typedef struct {
+ char type; /* ESC type ... */
+ char *buf; /* allocated raw string */
+ size_t siz; /* allocation size */
+ size_t len; /* raw string length */
+ char *args[STR_ARG_SIZ];
+ int narg; /* nb of args */
+} STREscape;
+
+static void execsh(char *, char **);
+static void stty(char **);
+static void sigchld(int);
+static void ttywriteraw(const char *, size_t);
+
+static void csidump(void);
+static void csihandle(void);
+static void csiparse(void);
+static void csireset(void);
+static void osc_color_response(int, int, int);
+static int eschandle(uchar);
+static void strdump(void);
+static void strhandle(void);
+static void strparse(void);
+static void strreset(void);
+
+static void tprinter(char *, size_t);
+static void tdumpsel(void);
+static void tdumpline(int);
+static void tdump(void);
+static void tclearregion(int, int, int, int);
+static void tcursor(int);
+static void tdeletechar(int);
+static void tdeleteline(int);
+static void tinsertblank(int);
+static void tinsertblankline(int);
+static int tlinelen(int);
+static void tmoveto(int, int);
+static void tmoveato(int, int);
+static void tnewline(int);
+static void tputtab(int);
+static void tputc(Rune);
+static void treset(void);
+static void tscrollup(int, int, int);
+static void tscrolldown(int, int, int);
+static void tsetattr(const int *, int);
+static void tsetchar(Rune, const Glyph *, int, int);
+static void tsetdirt(int, int);
+static void tsetscroll(int, int);
+static void tswapscreen(void);
+static void tsetmode(int, int, const int *, int);
+static int twrite(const char *, int, int);
+static void tfulldirt(void);
+static void tcontrolcode(uchar );
+static void tdectest(char );
+static void tdefutf8(char);
+static int32_t tdefcolor(const int *, int *, int);
+static void tdeftran(char);
+static void tstrsequence(uchar);
+
+static void drawregion(int, int, int, int);
+
+static void selnormalize(void);
+static void selscroll(int, int);
+static void selsnap(int *, int *, int);
+
+static size_t utf8decode(const char *, Rune *, size_t);
+static Rune utf8decodebyte(char, size_t *);
+static char utf8encodebyte(Rune, size_t);
+static size_t utf8validate(Rune *, size_t);
+
+static char base64dec_getc(const char **);
+
+static ssize_t xwrite(int, const char *, size_t);
+
+/* Globals */
+static Term term;
+static Selection sel;
+static CSIEscape csiescseq;
+static STREscape strescseq;
+static int iofd = 1;
+static int cmdfd;
+static pid_t pid;
+
+static const uchar utfbyte[UTF_SIZ + 1] = {0x80, 0, 0xC0, 0xE0, 0xF0};
+static const uchar utfmask[UTF_SIZ + 1] = {0xC0, 0x80, 0xE0, 0xF0, 0xF8};
+static const Rune utfmin[UTF_SIZ + 1] = { 0, 0, 0x80, 0x800, 0x10000};
+static const Rune utfmax[UTF_SIZ + 1] = {0x10FFFF, 0x7F, 0x7FF, 0xFFFF, 0x10FFFF};
+
+/* Converts a diacritic to a row/column/etc number. The result is 1-base, 0
+ * means "couldn't convert". Defined in rowcolumn_diacritics_helpers.c */
+uint16_t diacritic_to_num(uint32_t code);
+
+ssize_t
+xwrite(int fd, const char *s, size_t len)
+{
+ size_t aux = len;
+ ssize_t r;
+
+ while (len > 0) {
+ r = write(fd, s, len);
+ if (r < 0)
+ return r;
+ len -= r;
+ s += r;
+ }
+
+ return aux;
+}
+
+void *
+xmalloc(size_t len)
+{
+ void *p;
+
+ if (!(p = malloc(len)))
+ die("malloc: %s\n", strerror(errno));
+
+ return p;
+}
+
+void *
+xrealloc(void *p, size_t len)
+{
+ if ((p = realloc(p, len)) == NULL)
+ die("realloc: %s\n", strerror(errno));
+
+ return p;
+}
+
+char *
+xstrdup(const char *s)
+{
+ char *p;
+
+ if ((p = strdup(s)) == NULL)
+ die("strdup: %s\n", strerror(errno));
+
+ return p;
+}
+
+size_t
+utf8decode(const char *c, Rune *u, size_t clen)
+{
+ size_t i, j, len, type;
+ Rune udecoded;
+
+ *u = UTF_INVALID;
+ if (!clen)
+ return 0;
+ udecoded = utf8decodebyte(c[0], &len);
+ if (!BETWEEN(len, 1, UTF_SIZ))
+ return 1;
+ for (i = 1, j = 1; i < clen && j < len; ++i, ++j) {
+ udecoded = (udecoded << 6) | utf8decodebyte(c[i], &type);
+ if (type != 0)
+ return j;
+ }
+ if (j < len)
+ return 0;
+ *u = udecoded;
+ utf8validate(u, len);
+
+ return len;
+}
+
+Rune
+utf8decodebyte(char c, size_t *i)
+{
+ for (*i = 0; *i < LEN(utfmask); ++(*i))
+ if (((uchar)c & utfmask[*i]) == utfbyte[*i])
+ return (uchar)c & ~utfmask[*i];
+
+ return 0;
+}
+
+size_t
+utf8encode(Rune u, char *c)
+{
+ size_t len, i;
+
+ len = utf8validate(&u, 0);
+ if (len > UTF_SIZ)
+ return 0;
+
+ for (i = len - 1; i != 0; --i) {
+ c[i] = utf8encodebyte(u, 0);
+ u >>= 6;
+ }
+ c[0] = utf8encodebyte(u, len);
+
+ return len;
+}
+
+char
+utf8encodebyte(Rune u, size_t i)
+{
+ return utfbyte[i] | (u & ~utfmask[i]);
+}
+
+size_t
+utf8validate(Rune *u, size_t i)
+{
+ if (!BETWEEN(*u, utfmin[i], utfmax[i]) || BETWEEN(*u, 0xD800, 0xDFFF))
+ *u = UTF_INVALID;
+ for (i = 1; *u > utfmax[i]; ++i)
+ ;
+
+ return i;
+}
+
+char
+base64dec_getc(const char **src)
+{
+ while (**src && !isprint((unsigned char)**src))
+ (*src)++;
+ return **src ? *((*src)++) : '='; /* emulate padding if string ends */
+}
+
+char *
+base64dec(const char *src)
+{
+ size_t in_len = strlen(src);
+ char *result, *dst;
+ static const char base64_digits[256] = {
+ [43] = 62, 0, 0, 0, 63, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61,
+ 0, 0, 0, -1, 0, 0, 0, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12,
+ 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 0, 0, 0, 0,
+ 0, 0, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39,
+ 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51
+ };
+
+ if (in_len % 4)
+ in_len += 4 - (in_len % 4);
+ result = dst = xmalloc(in_len / 4 * 3 + 1);
+ while (*src) {
+ int a = base64_digits[(unsigned char) base64dec_getc(&src)];
+ int b = base64_digits[(unsigned char) base64dec_getc(&src)];
+ int c = base64_digits[(unsigned char) base64dec_getc(&src)];
+ int d = base64_digits[(unsigned char) base64dec_getc(&src)];
+
+ /* invalid input. 'a' can be -1, e.g. if src is "\n" (c-str) */
+ if (a == -1 || b == -1)
+ break;
+
+ *dst++ = (a << 2) | ((b & 0x30) >> 4);
+ if (c == -1)
+ break;
+ *dst++ = ((b & 0x0f) << 4) | ((c & 0x3c) >> 2);
+ if (d == -1)
+ break;
+ *dst++ = ((c & 0x03) << 6) | d;
+ }
+ *dst = '\0';
+ return result;
+}
+
+void
+selinit(void)
+{
+ sel.mode = SEL_IDLE;
+ sel.snap = 0;
+ sel.ob.x = -1;
+}
+
+int
+tlinelen(int y)
+{
+ int i = term.col;
+
+ if (TLINE(y)[i - 1].mode & ATTR_WRAP)
+ return i;
+
+ while (i > 0 && TLINE(y)[i - 1].u == ' ')
+ --i;
+
+ return i;
+}
+
+void
+selstart(int col, int row, int snap)
+{
+ selclear();
+ sel.mode = SEL_EMPTY;
+ sel.type = SEL_REGULAR;
+ sel.alt = IS_SET(MODE_ALTSCREEN);
+ sel.snap = snap;
+ sel.oe.x = sel.ob.x = col;
+ sel.oe.y = sel.ob.y = row;
+ selnormalize();
+
+ if (sel.snap != 0)
+ sel.mode = SEL_READY;
+ tsetdirt(sel.nb.y, sel.ne.y);
+}
+
+void
+selextend(int col, int row, int type, int done)
+{
+ int oldey, oldex, oldsby, oldsey, oldtype;
+
+ if (sel.mode == SEL_IDLE)
+ return;
+ if (done && sel.mode == SEL_EMPTY) {
+ selclear();
+ return;
+ }
+
+ oldey = sel.oe.y;
+ oldex = sel.oe.x;
+ oldsby = sel.nb.y;
+ oldsey = sel.ne.y;
+ oldtype = sel.type;
+
+ sel.oe.x = col;
+ sel.oe.y = row;
+ selnormalize();
+ sel.type = type;
+
+ if (oldey != sel.oe.y || oldex != sel.oe.x || oldtype != sel.type || sel.mode == SEL_EMPTY)
+ tsetdirt(MIN(sel.nb.y, oldsby), MAX(sel.ne.y, oldsey));
+
+ sel.mode = done ? SEL_IDLE : SEL_READY;
+}
+
+void
+selnormalize(void)
+{
+ int i;
+
+ if (sel.type == SEL_REGULAR && sel.ob.y != sel.oe.y) {
+ sel.nb.x = sel.ob.y < sel.oe.y ? sel.ob.x : sel.oe.x;
+ sel.ne.x = sel.ob.y < sel.oe.y ? sel.oe.x : sel.ob.x;
+ } else {
+ sel.nb.x = MIN(sel.ob.x, sel.oe.x);
+ sel.ne.x = MAX(sel.ob.x, sel.oe.x);
+ }
+ sel.nb.y = MIN(sel.ob.y, sel.oe.y);
+ sel.ne.y = MAX(sel.ob.y, sel.oe.y);
+
+ selsnap(&sel.nb.x, &sel.nb.y, -1);
+ selsnap(&sel.ne.x, &sel.ne.y, +1);
+
+ /* expand selection over line breaks */
+ if (sel.type == SEL_RECTANGULAR)
+ return;
+ i = tlinelen(sel.nb.y);
+ if (i < sel.nb.x)
+ sel.nb.x = i;
+ if (tlinelen(sel.ne.y) <= sel.ne.x)
+ sel.ne.x = term.col - 1;
+}
+
+int
+selected(int x, int y)
+{
+ if (sel.mode == SEL_EMPTY || sel.ob.x == -1 ||
+ sel.alt != IS_SET(MODE_ALTSCREEN))
+ return 0;
+
+ if (sel.type == SEL_RECTANGULAR)
+ return BETWEEN(y, sel.nb.y, sel.ne.y)
+ && BETWEEN(x, sel.nb.x, sel.ne.x);
+
+ return BETWEEN(y, sel.nb.y, sel.ne.y)
+ && (y != sel.nb.y || x >= sel.nb.x)
+ && (y != sel.ne.y || x <= sel.ne.x);
+}
+
+void
+selsnap(int *x, int *y, int direction)
+{
+ int newx, newy, xt, yt;
+ int delim, prevdelim;
+ const Glyph *gp, *prevgp;
+
+ switch (sel.snap) {
+ case SNAP_WORD:
+ /*
+ * Snap around if the word wraps around at the end or
+ * beginning of a line.
+ */
+ prevgp = &TLINE(*y)[*x];
+ prevdelim = ISDELIM(prevgp->u);
+ for (;;) {
+ newx = *x + direction;
+ newy = *y;
+ if (!BETWEEN(newx, 0, term.col - 1)) {
+ newy += direction;
+ newx = (newx + term.col) % term.col;
+ if (!BETWEEN(newy, 0, term.row - 1))
+ break;
+
+ if (direction > 0)
+ yt = *y, xt = *x;
+ else
+ yt = newy, xt = newx;
+ if (!(TLINE(yt)[xt].mode & ATTR_WRAP))
+ break;
+ }
+
+ if (newx >= tlinelen(newy))
+ break;
+
+ gp = &TLINE(newy)[newx];
+ delim = ISDELIM(gp->u);
+ if (!(gp->mode & ATTR_WDUMMY) && (delim != prevdelim
+ || (delim && gp->u != prevgp->u)))
+ break;
+
+ *x = newx;
+ *y = newy;
+ prevgp = gp;
+ prevdelim = delim;
+ }
+ break;
+ case SNAP_LINE:
+ /*
+ * Snap around if the the previous line or the current one
+ * has set ATTR_WRAP at its end. Then the whole next or
+ * previous line will be selected.
+ */
+ *x = (direction < 0) ? 0 : term.col - 1;
+ if (direction < 0) {
+ for (; *y > 0; *y += direction) {
+ if (!(TLINE(*y-1)[term.col-1].mode
+ & ATTR_WRAP)) {
+ break;
+ }
+ }
+ } else if (direction > 0) {
+ for (; *y < term.row-1; *y += direction) {
+ if (!(TLINE(*y)[term.col-1].mode
+ & ATTR_WRAP)) {
+ break;
+ }
+ }
+ }
+ break;
+ }
+}
+
+char *
+getsel(void)
+{
+ char *str, *ptr;
+ int y, bufsize, lastx, linelen;
+ const Glyph *gp, *last;
+
+ if (sel.ob.x == -1)
+ return NULL;
+
+ bufsize = (term.col+1) * (sel.ne.y-sel.nb.y+1) * UTF_SIZ;
+ ptr = str = xmalloc(bufsize);
+
+ /* append every set & selected glyph to the selection */
+ for (y = sel.nb.y; y <= sel.ne.y; y++) {
+ if ((linelen = tlinelen(y)) == 0) {
+ *ptr++ = '\n';
+ continue;
+ }
+
+ if (sel.type == SEL_RECTANGULAR) {
+ gp = &TLINE(y)[sel.nb.x];
+ lastx = sel.ne.x;
+ } else {
+ gp = &TLINE(y)[sel.nb.y == y ? sel.nb.x : 0];
+ lastx = (sel.ne.y == y) ? sel.ne.x : term.col-1;
+ }
+ last = &TLINE(y)[MIN(lastx, linelen-1)];
+ while (last >= gp && last->u == ' ')
+ --last;
+
+ for ( ; gp <= last; ++gp) {
+ if (gp->mode & ATTR_WDUMMY)
+ continue;
+
+ if (gp->mode & ATTR_IMAGE) {
+ // TODO: Copy diacritics as well
+ ptr += utf8encode(IMAGE_PLACEHOLDER_CHAR, ptr);
+ continue;
+ }
+
+ ptr += utf8encode(gp->u, ptr);
+ }
+
+ /*
+ * Copy and pasting of line endings is inconsistent
+ * in the inconsistent terminal and GUI world.
+ * The best solution seems like to produce '\n' when
+ * something is copied from st and convert '\n' to
+ * '\r', when something to be pasted is received by
+ * st.
+ * FIXME: Fix the computer world.
+ */
+ if ((y < sel.ne.y || lastx >= linelen) &&
+ (!(last->mode & ATTR_WRAP) || sel.type == SEL_RECTANGULAR))
+ *ptr++ = '\n';
+ }
+ *ptr = 0;
+ return str;
+}
+
+void
+selclear(void)
+{
+ if (sel.ob.x == -1)
+ return;
+ sel.mode = SEL_IDLE;
+ sel.ob.x = -1;
+ tsetdirt(sel.nb.y, sel.ne.y);
+}
+
+void
+die(const char *errstr, ...)
+{
+ va_list ap;
+
+ va_start(ap, errstr);
+ vfprintf(stderr, errstr, ap);
+ va_end(ap);
+ exit(1);
+}
+
+void
+execsh(char *cmd, char **args)
+{
+ char *sh, *prog, *arg;
+ const struct passwd *pw;
+
+ errno = 0;
+ if ((pw = getpwuid(getuid())) == NULL) {
+ if (errno)
+ die("getpwuid: %s\n", strerror(errno));
+ else
+ die("who are you?\n");
+ }
+
+ if ((sh = getenv("SHELL")) == NULL)
+ sh = (pw->pw_shell[0]) ? pw->pw_shell : cmd;
+
+ if (args) {
+ prog = args[0];
+ arg = NULL;
+ } else if (scroll) {
+ prog = scroll;
+ arg = utmp ? utmp : sh;
+ } else if (utmp) {
+ prog = utmp;
+ arg = NULL;
+ } else {
+ prog = sh;
+ arg = NULL;
+ }
+ DEFAULT(args, ((char *[]) {prog, arg, NULL}));
+
+ unsetenv("COLUMNS");
+ unsetenv("LINES");
+ unsetenv("TERMCAP");
+ setenv("LOGNAME", pw->pw_name, 1);
+ setenv("USER", pw->pw_name, 1);
+ setenv("SHELL", sh, 1);
+ setenv("HOME", pw->pw_dir, 1);
+ setenv("TERM", termname, 1);
+
+ signal(SIGCHLD, SIG_DFL);
+ signal(SIGHUP, SIG_DFL);
+ signal(SIGINT, SIG_DFL);
+ signal(SIGQUIT, SIG_DFL);
+ signal(SIGTERM, SIG_DFL);
+ signal(SIGALRM, SIG_DFL);
+
+ execvp(prog, args);
+ _exit(1);
+}
+
+void
+sigchld(int a)
+{
+ int stat;
+ pid_t p;
+
+ if ((p = waitpid(pid, &stat, WNOHANG)) < 0)
+ die("waiting for pid %hd failed: %s\n", pid, strerror(errno));
+
+ if (pid != p)
+ return;
+
+ if (WIFEXITED(stat) && WEXITSTATUS(stat))
+ die("child exited with status %d\n", WEXITSTATUS(stat));
+ else if (WIFSIGNALED(stat))
+ die("child terminated due to signal %d\n", WTERMSIG(stat));
+ _exit(0);
+}
+
+void
+stty(char **args)
+{
+ char cmd[_POSIX_ARG_MAX], **p, *q, *s;
+ size_t n, siz;
+
+ if ((n = strlen(stty_args)) > sizeof(cmd)-1)
+ die("incorrect stty parameters\n");
+ memcpy(cmd, stty_args, n);
+ q = cmd + n;
+ siz = sizeof(cmd) - n;
+ for (p = args; p && (s = *p); ++p) {
+ if ((n = strlen(s)) > siz-1)
+ die("stty parameter length too long\n");
+ *q++ = ' ';
+ memcpy(q, s, n);
+ q += n;
+ siz -= n + 1;
+ }
+ *q = '\0';
+ if (system(cmd) != 0)
+ perror("Couldn't call stty");
+}
+
+int
+ttynew(const char *line, char *cmd, const char *out, char **args)
+{
+ int m, s;
+
+ if (out) {
+ term.mode |= MODE_PRINT;
+ iofd = (!strcmp(out, "-")) ?
+ 1 : open(out, O_WRONLY | O_CREAT, 0666);
+ if (iofd < 0) {
+ fprintf(stderr, "Error opening %s:%s\n",
+ out, strerror(errno));
+ }
+ }
+
+ if (line) {
+ if ((cmdfd = open(line, O_RDWR)) < 0)
+ die("open line '%s' failed: %s\n",
+ line, strerror(errno));
+ dup2(cmdfd, 0);
+ stty(args);
+ return cmdfd;
+ }
+
+ /* seems to work fine on linux, openbsd and freebsd */
+ if (openpty(&m, &s, NULL, NULL, NULL) < 0)
+ die("openpty failed: %s\n", strerror(errno));
+
+ switch (pid = fork()) {
+ case -1:
+ die("fork failed: %s\n", strerror(errno));
+ break;
+ case 0:
+ close(iofd);
+ close(m);
+ setsid(); /* create a new process group */
+ dup2(s, 0);
+ dup2(s, 1);
+ dup2(s, 2);
+ if (ioctl(s, TIOCSCTTY, NULL) < 0)
+ die("ioctl TIOCSCTTY failed: %s\n", strerror(errno));
+ if (s > 2)
+ close(s);
+#ifdef __OpenBSD__
+ if (pledge("stdio getpw proc exec", NULL) == -1)
+ die("pledge\n");
+#endif
+ execsh(cmd, args);
+ break;
+ default:
+#ifdef __OpenBSD__
+ if (pledge("stdio rpath tty proc", NULL) == -1)
+ die("pledge\n");
+#endif
+ close(s);
+ cmdfd = m;
+ signal(SIGCHLD, sigchld);
+ break;
+ }
+ return cmdfd;
+}
+
+size_t
+ttyread(void)
+{
+ static char buf[BUFSIZ];
+ static int buflen = 0;
+ static int already_processing = 0;
+ int ret, written = 0;
+
+ if (buflen >= LEN(buf))
+ return 0;
+
+ /* append read bytes to unprocessed bytes */
+ ret = read(cmdfd, buf+buflen, LEN(buf)-buflen);
+
+ switch (ret) {
+ case 0:
+ exit(0);
+ case -1:
+ die("couldn't read from shell: %s\n", strerror(errno));
+ default:
+ buflen += ret;
+ if (already_processing) {
+ /* Avoid recursive call to twrite() */
+ return ret;
+ }
+ already_processing = 1;
+ while (1) {
+ int buflen_before_processing = buflen;
+ written += twrite(buf + written, buflen - written, 0);
+ // If buflen changed during the call to twrite, there is
+ // new data, and we need to keep processing, otherwise
+ // we can exit. This will not loop forever because the
+ // buffer is limited, and we don't clean it in this
+ // loop, so at some point ttywrite will have to drop
+ // some data.
+ if (buflen_before_processing == buflen)
+ break;
+ }
+ already_processing = 0;
+ buflen -= written;
+ /* keep any incomplete UTF-8 byte sequence for the next call */
+ if (buflen > 0)
+ memmove(buf, buf + written, buflen);
+ return ret;
+ }
+}
+
+void
+ttywrite(const char *s, size_t n, int may_echo)
+{
+ const char *next;
+ Arg arg = (Arg) { .i = term.scr };
+
+ kscrolldown(&arg);
+
+ if (may_echo && IS_SET(MODE_ECHO))
+ twrite(s, n, 1);
+
+ if (!IS_SET(MODE_CRLF)) {
+ ttywriteraw(s, n);
+ return;
+ }
+
+ /* This is similar to how the kernel handles ONLCR for ttys */
+ while (n > 0) {
+ if (*s == '\r') {
+ next = s + 1;
+ ttywriteraw("\r\n", 2);
+ } else {
+ next = memchr(s, '\r', n);
+ DEFAULT(next, s + n);
+ ttywriteraw(s, next - s);
+ }
+ n -= next - s;
+ s = next;
+ }
+}
+
+void
+ttywriteraw(const char *s, size_t n)
+{
+ fd_set wfd, rfd;
+ ssize_t r;
+ size_t lim = 256;
+ int retries_left = 100;
+
+ /*
+ * Remember that we are using a pty, which might be a modem line.
+ * Writing too much will clog the line. That's why we are doing this
+ * dance.
+ * FIXME: Migrate the world to Plan 9.
+ */
+ while (n > 0) {
+ if (retries_left-- <= 0)
+ goto too_many_retries;
+
+ FD_ZERO(&wfd);
+ FD_ZERO(&rfd);
+ FD_SET(cmdfd, &wfd);
+ FD_SET(cmdfd, &rfd);
+
+ /* Check if we can write. */
+ if (pselect(cmdfd+1, &rfd, &wfd, NULL, NULL, NULL) < 0) {
+ if (errno == EINTR)
+ continue;
+ die("select failed: %s\n", strerror(errno));
+ }
+ if (FD_ISSET(cmdfd, &wfd)) {
+ /*
+ * Only write the bytes written by ttywrite() or the
+ * default of 256. This seems to be a reasonable value
+ * for a serial line. Bigger values might clog the I/O.
+ */
+ if ((r = write(cmdfd, s, (n < lim)? n : lim)) < 0)
+ goto write_error;
+ if (r < n) {
+ /*
+ * We weren't able to write out everything.
+ * This means the buffer is getting full
+ * again. Empty it.
+ */
+ if (n < lim)
+ lim = ttyread();
+ n -= r;
+ s += r;
+ } else {
+ /* All bytes have been written. */
+ break;
+ }
+ }
+ if (FD_ISSET(cmdfd, &rfd))
+ lim = ttyread();
+ }
+ return;
+
+write_error:
+ die("write error on tty: %s\n", strerror(errno));
+too_many_retries:
+ fprintf(stderr, "Could not write %zu bytes to tty\n", n);
+}
+
+void
+ttyresize(int tw, int th)
+{
+ term.pixw = tw;
+ term.pixh = th;
+
+ struct winsize w;
+
+ w.ws_row = term.row;
+ w.ws_col = term.col;
+ w.ws_xpixel = tw;
+ w.ws_ypixel = th;
+ if (ioctl(cmdfd, TIOCSWINSZ, &w) < 0)
+ fprintf(stderr, "Couldn't set window size: %s\n", strerror(errno));
+}
+
+void
+ttyhangup(void)
+{
+ /* Send SIGHUP to shell */
+ kill(pid, SIGHUP);
+}
+
+int
+tattrset(int attr)
+{
+ int i, j;
+
+ for (i = 0; i < term.row-1; i++) {
+ for (j = 0; j < term.col-1; j++) {
+ if (term.line[i][j].mode & attr)
+ return 1;
+ }
+ }
+
+ return 0;
+}
+
+void
+tsetdirt(int top, int bot)
+{
+ int i;
+
+ LIMIT(top, 0, term.row-1);
+ LIMIT(bot, 0, term.row-1);
+
+ for (i = top; i <= bot; i++)
+ term.dirty[i] = 1;
+}
+
+void
+tsetdirtattr(int attr)
+{
+ int i, j;
+
+ for (i = 0; i < term.row-1; i++) {
+ for (j = 0; j < term.col-1; j++) {
+ if (term.line[i][j].mode & attr) {
+ tsetdirt(i, i);
+ break;
+ }
+ }
+ }
+}
+
+void
+tfulldirt(void)
+{
+ tsetdirt(0, term.row-1);
+}
+
+void
+tcursor(int mode)
+{
+ static TCursor c[2];
+ int alt = IS_SET(MODE_ALTSCREEN);
+
+ if (mode == CURSOR_SAVE) {
+ c[alt] = term.c;
+ } else if (mode == CURSOR_LOAD) {
+ term.c = c[alt];
+ tmoveto(c[alt].x, c[alt].y);
+ }
+}
+
+void
+treset(void)
+{
+ uint i;
+
+ term.c = (TCursor){{
+ .mode = ATTR_NULL,
+ .fg = defaultfg,
+ .bg = defaultbg,
+ .decor = DECOR_DEFAULT_COLOR
+ }, .x = 0, .y = 0, .state = CURSOR_DEFAULT};
+
+ memset(term.tabs, 0, term.col * sizeof(*term.tabs));
+ for (i = tabspaces; i < term.col; i += tabspaces)
+ term.tabs[i] = 1;
+ term.top = 0;
+ term.bot = term.row - 1;
+ term.mode = MODE_WRAP|MODE_UTF8;
+ memset(term.trantbl, CS_USA, sizeof(term.trantbl));
+ term.charset = 0;
+
+ for (i = 0; i < 2; i++) {
+ tmoveto(0, 0);
+ tcursor(CURSOR_SAVE);
+ tclearregion(0, 0, term.col-1, term.row-1);
+ tswapscreen();
+ }
+}
+
+void
+tnew(int col, int row)
+{
+ term = (Term){.c = {.attr = {.fg = defaultfg,
+ .bg = defaultbg,
+ .decor = DECOR_DEFAULT_COLOR}}};
+ tresize(col, row);
+ treset();
+}
+
+void
+tswapscreen(void)
+{
+ Line *tmp = term.line;
+
+ term.line = term.alt;
+ term.alt = tmp;
+ term.mode ^= MODE_ALTSCREEN;
+ tfulldirt();
+}
+
+void
+kscrolldown(const Arg* a)
+{
+ int n = a->i;
+
+ if (n < 0)
+ n = term.row + n;
+
+ if (n > term.scr)
+ n = term.scr;
+
+ if (term.scr > 0) {
+ term.scr -= n;
+ selscroll(0, -n);
+ tfulldirt();
+ }
+}
+
+void
+kscrollup(const Arg* a)
+{
+ int n = a->i;
+
+ if (n < 0)
+ n = term.row + n;
+
+ if (term.scr <= HISTSIZE-n) {
+ term.scr += n;
+ selscroll(0, n);
+ tfulldirt();
+ }
+}
+
+void
+tscrolldown(int orig, int n, int copyhist)
+{
+ int i;
+ Line temp;
+
+ LIMIT(n, 0, term.bot-orig+1);
+
+ if (copyhist) {
+ term.histi = (term.histi - 1 + HISTSIZE) % HISTSIZE;
+ temp = term.hist[term.histi];
+ term.hist[term.histi] = term.line[term.bot];
+ term.line[term.bot] = temp;
+ }
+
+ tsetdirt(orig, term.bot-n);
+ tclearregion(0, term.bot-n+1, term.col-1, term.bot);
+
+ for (i = term.bot; i >= orig+n; i--) {
+ temp = term.line[i];
+ term.line[i] = term.line[i-n];
+ term.line[i-n] = temp;
+ }
+
+ if (term.scr == 0)
+ selscroll(orig, n);
+}
+
+void
+tscrollup(int orig, int n, int copyhist)
+{
+ int i;
+ Line temp;
+
+ LIMIT(n, 0, term.bot-orig+1);
+
+ if (copyhist) {
+ term.histi = (term.histi + 1) % HISTSIZE;
+ temp = term.hist[term.histi];
+ term.hist[term.histi] = term.line[orig];
+ term.line[orig] = temp;
+ }
+
+ if (term.scr > 0 && term.scr < HISTSIZE)
+ term.scr = MIN(term.scr + n, HISTSIZE-1);
+
+ tclearregion(0, orig, term.col-1, orig+n-1);
+ tsetdirt(orig+n, term.bot);
+
+ for (i = orig; i <= term.bot-n; i++) {
+ temp = term.line[i];
+ term.line[i] = term.line[i+n];
+ term.line[i+n] = temp;
+ }
+
+ if (term.scr == 0)
+ selscroll(orig, -n);
+}
+
+void
+selscroll(int orig, int n)
+{
+ if (sel.ob.x == -1)
+ return;
+
+ if (BETWEEN(sel.nb.y, orig, term.bot) != BETWEEN(sel.ne.y, orig, term.bot)) {
+ selclear();
+ } else if (BETWEEN(sel.nb.y, orig, term.bot)) {
+ sel.ob.y += n;
+ sel.oe.y += n;
+ if (sel.ob.y < term.top || sel.ob.y > term.bot ||
+ sel.oe.y < term.top || sel.oe.y > term.bot) {
+ selclear();
+ } else {
+ selnormalize();
+ }
+ }
+}
+
+void
+tnewline(int first_col)
+{
+ int y = term.c.y;
+
+ if (y == term.bot) {
+ tscrollup(term.top, 1, 1);
+ } else {
+ y++;
+ }
+ tmoveto(first_col ? 0 : term.c.x, y);
+}
+
+void
+csiparse(void)
+{
+ char *p = csiescseq.buf, *np;
+ long int v;
+
+ csiescseq.narg = 0;
+ if (*p == '?') {
+ csiescseq.priv = 1;
+ p++;
+ }
+
+ csiescseq.buf[csiescseq.len] = '\0';
+ while (p < csiescseq.buf+csiescseq.len) {
+ np = NULL;
+ v = strtol(p, &np, 10);
+ if (np == p)
+ v = 0;
+ if (v == LONG_MAX || v == LONG_MIN)
+ v = -1;
+ csiescseq.arg[csiescseq.narg++] = v;
+ p = np;
+ if (*p != ';' || csiescseq.narg == ESC_ARG_SIZ)
+ break;
+ p++;
+ }
+ csiescseq.mode[0] = *p++;
+ csiescseq.mode[1] = (p < csiescseq.buf+csiescseq.len) ? *p : '\0';
+}
+
+/* for absolute user moves, when decom is set */
+void
+tmoveato(int x, int y)
+{
+ tmoveto(x, y + ((term.c.state & CURSOR_ORIGIN) ? term.top: 0));
+}
+
+void
+tmoveto(int x, int y)
+{
+ int miny, maxy;
+
+ if (term.c.state & CURSOR_ORIGIN) {
+ miny = term.top;
+ maxy = term.bot;
+ } else {
+ miny = 0;
+ maxy = term.row - 1;
+ }
+ term.c.state &= ~CURSOR_WRAPNEXT;
+ term.c.x = LIMIT(x, 0, term.col-1);
+ term.c.y = LIMIT(y, miny, maxy);
+}
+
+void
+tsetchar(Rune u, const Glyph *attr, int x, int y)
+{
+ static const char *vt100_0[62] = { /* 0x41 - 0x7e */
+ "↑", "↓", "→", "←", "█", "▚", "☃", /* A - G */
+ 0, 0, 0, 0, 0, 0, 0, 0, /* H - O */
+ 0, 0, 0, 0, 0, 0, 0, 0, /* P - W */
+ 0, 0, 0, 0, 0, 0, 0, " ", /* X - _ */
+ "◆", "▒", "␉", "␌", "␍", "␊", "°", "±", /* ` - g */
+ "", "␋", "┘", "┐", "┌", "└", "┼", "⎺", /* h - o */
+ "⎻", "─", "⎼", "⎽", "├", "┤", "┴", "┬", /* p - w */
+ "│", "≤", "≥", "π", "≠", "£", "·", /* x - ~ */
+ };
+
+ /*
+ * The table is proudly stolen from rxvt.
+ */
+ if (term.trantbl[term.charset] == CS_GRAPHIC0 &&
+ BETWEEN(u, 0x41, 0x7e) && vt100_0[u - 0x41])
+ utf8decode(vt100_0[u - 0x41], &u, UTF_SIZ);
+
+ if (term.line[y][x].mode & ATTR_WIDE) {
+ if (x+1 < term.col) {
+ term.line[y][x+1].u = ' ';
+ term.line[y][x+1].mode &= ~ATTR_WDUMMY;
+ }
+ } else if (term.line[y][x].mode & ATTR_WDUMMY) {
+ term.line[y][x-1].u = ' ';
+ term.line[y][x-1].mode &= ~ATTR_WIDE;
+ }
+
+ if (u == ' ' && term.line[y][x].mode & ATTR_IMAGE &&
+ tgetisclassicplaceholder(&term.line[y][x])) {
+ // This is a workaround: don't overwrite classic placement
+ // placeholders with space symbols (unlike Unicode placeholders
+ // which must be overwritten by anything).
+ term.line[y][x].bg = attr->bg;
+ term.dirty[y] = 1;
+ return;
+ }
+
+ term.dirty[y] = 1;
+ term.line[y][x] = *attr;
+ term.line[y][x].u = u;
+
+ if (u == IMAGE_PLACEHOLDER_CHAR || u == IMAGE_PLACEHOLDER_CHAR_OLD) {
+ term.line[y][x].u = 0;
+ term.line[y][x].mode |= ATTR_IMAGE;
+ }
+}
+
+void
+tclearregion(int x1, int y1, int x2, int y2)
+{
+ int x, y, temp;
+ Glyph *gp;
+
+ if (x1 > x2)
+ temp = x1, x1 = x2, x2 = temp;
+ if (y1 > y2)
+ temp = y1, y1 = y2, y2 = temp;
+
+ LIMIT(x1, 0, term.col-1);
+ LIMIT(x2, 0, term.col-1);
+ LIMIT(y1, 0, term.row-1);
+ LIMIT(y2, 0, term.row-1);
+
+ for (y = y1; y <= y2; y++) {
+ term.dirty[y] = 1;
+ for (x = x1; x <= x2; x++) {
+ gp = &term.line[y][x];
+ if (selected(x, y))
+ selclear();
+ gp->fg = term.c.attr.fg;
+ gp->bg = term.c.attr.bg;
+ gp->decor = term.c.attr.decor;
+ gp->mode = 0;
+ gp->u = ' ';
+ }
+ }
+}
+
+/// Fills a rectangle area with an image placeholder. The starting point is the
+/// cursor. Adds empty lines if needed. The placeholder will be marked as
+/// classic.
+void
+tcreateimgplaceholder(uint32_t image_id, uint32_t placement_id,
+ int cols, int rows, char do_not_move_cursor)
+{
+ for (int row = 0; row < rows; ++row) {
+ int y = term.c.y;
+ term.dirty[y] = 1;
+ for (int col = 0; col < cols; ++col) {
+ int x = term.c.x + col;
+ if (x >= term.col)
+ break;
+ Glyph *gp = &term.line[y][x];
+ if (selected(x, y))
+ selclear();
+ gp->mode = ATTR_IMAGE;
+ gp->u = 0;
+ tsetimgrow(gp, row + 1);
+ tsetimgcol(gp, col + 1);
+ tsetimgid(gp, image_id);
+ tsetimgplacementid(gp, placement_id);
+ tsetimgdiacriticcount(gp, 3);
+ tsetisclassicplaceholder(gp, 1);
+ }
+ // If moving the cursor is not allowed and this is the last line
+ // of the terminal, we are done.
+ if (do_not_move_cursor && y == term.row - 1)
+ break;
+ // Move the cursor down, maybe creating a new line. The x is
+ // preserved (we never change term.c.x in the loop above).
+ if (row != rows - 1)
+ tnewline(/*first_col=*/0);
+ }
+ if (do_not_move_cursor) {
+ // Return the cursor to the original position.
+ tmoveto(term.c.x, term.c.y - rows + 1);
+ } else {
+ // Move the cursor beyond the last column, as required by the
+ // protocol. If the cursor goes beyond the screen edge, insert a
+ // newline to match the behavior of kitty.
+ if (term.c.x + cols >= term.col)
+ tnewline(/*first_col=*/1);
+ else
+ tmoveto(term.c.x + cols, term.c.y);
+ }
+}
+
+void gr_for_each_image_cell(int (*callback)(void *data, uint32_t image_id,
+ uint32_t placement_id, int col,
+ int row, char is_classic),
+ void *data) {
+ for (int row = 0; row < term.row; ++row) {
+ for (int col = 0; col < term.col; ++col) {
+ Glyph *gp = &term.line[row][col];
+ if (gp->mode & ATTR_IMAGE) {
+ uint32_t image_id = tgetimgid(gp);
+ uint32_t placement_id = tgetimgplacementid(gp);
+ int ret =
+ callback(data, tgetimgid(gp),
+ tgetimgplacementid(gp),
+ tgetimgcol(gp), tgetimgrow(gp),
+ tgetisclassicplaceholder(gp));
+ if (ret == 1) {
+ term.dirty[row] = 1;
+ gp->mode = 0;
+ gp->u = ' ';
+ }
+ }
+ }
+ }
+}
+
+void gr_schedule_image_redraw_by_id(uint32_t image_id) {
+ for (int row = 0; row < term.row; ++row) {
+ if (term.dirty[row])
+ continue;
+ for (int col = 0; col < term.col; ++col) {
+ Glyph *gp = &term.line[row][col];
+ if (gp->mode & ATTR_IMAGE) {
+ uint32_t cell_image_id = tgetimgid(gp);
+ if (cell_image_id == image_id) {
+ term.dirty[row] = 1;
+ break;
+ }
+ }
+ }
+ }
+}
+
+void
+tdeletechar(int n)
+{
+ int dst, src, size;
+ Glyph *line;
+
+ LIMIT(n, 0, term.col - term.c.x);
+
+ dst = term.c.x;
+ src = term.c.x + n;
+ size = term.col - src;
+ line = term.line[term.c.y];
+
+ memmove(&line[dst], &line[src], size * sizeof(Glyph));
+ tclearregion(term.col-n, term.c.y, term.col-1, term.c.y);
+}
+
+void
+tinsertblank(int n)
+{
+ int dst, src, size;
+ Glyph *line;
+
+ LIMIT(n, 0, term.col - term.c.x);
+
+ dst = term.c.x + n;
+ src = term.c.x;
+ size = term.col - dst;
+ line = term.line[term.c.y];
+
+ memmove(&line[dst], &line[src], size * sizeof(Glyph));
+ tclearregion(src, term.c.y, dst - 1, term.c.y);
+}
+
+void
+tinsertblankline(int n)
+{
+ if (BETWEEN(term.c.y, term.top, term.bot))
+ tscrolldown(term.c.y, n, 0);
+}
+
+void
+tdeleteline(int n)
+{
+ if (BETWEEN(term.c.y, term.top, term.bot))
+ tscrollup(term.c.y, n, 0);
+}
+
+int32_t
+tdefcolor(const int *attr, int *npar, int l)
+{
+ int32_t idx = -1;
+ uint r, g, b;
+
+ switch (attr[*npar + 1]) {
+ case 2: /* direct color in RGB space */
+ if (*npar + 4 >= l) {
+ fprintf(stderr,
+ "erresc(38): Incorrect number of parameters (%d)\n",
+ *npar);
+ break;
+ }
+ r = attr[*npar + 2];
+ g = attr[*npar + 3];
+ b = attr[*npar + 4];
+ *npar += 4;
+ if (!BETWEEN(r, 0, 255) || !BETWEEN(g, 0, 255) || !BETWEEN(b, 0, 255))
+ fprintf(stderr, "erresc: bad rgb color (%u,%u,%u)\n",
+ r, g, b);
+ else
+ idx = TRUECOLOR(r, g, b);
+ break;
+ case 5: /* indexed color */
+ if (*npar + 2 >= l) {
+ fprintf(stderr,
+ "erresc(38): Incorrect number of parameters (%d)\n",
+ *npar);
+ break;
+ }
+ *npar += 2;
+ if (!BETWEEN(attr[*npar], 0, 255))
+ fprintf(stderr, "erresc: bad fgcolor %d\n", attr[*npar]);
+ else
+ idx = attr[*npar];
+ break;
+ case 0: /* implemented defined (only foreground) */
+ case 1: /* transparent */
+ case 3: /* direct color in CMY space */
+ case 4: /* direct color in CMYK space */
+ default:
+ fprintf(stderr,
+ "erresc(38): gfx attr %d unknown\n", attr[*npar]);
+ break;
+ }
+
+ return idx;
+}
+
+void
+tsetattr(const int *attr, int l)
+{
+ int i;
+ int32_t idx;
+
+ for (i = 0; i < l; i++) {
+ switch (attr[i]) {
+ case 0:
+ term.c.attr.mode &= ~(
+ ATTR_BOLD |
+ ATTR_FAINT |
+ ATTR_ITALIC |
+ ATTR_UNDERLINE |
+ ATTR_BLINK |
+ ATTR_REVERSE |
+ ATTR_INVISIBLE |
+ ATTR_STRUCK );
+ term.c.attr.fg = defaultfg;
+ term.c.attr.bg = defaultbg;
+ term.c.attr.decor = DECOR_DEFAULT_COLOR;
+ break;
+ case 1:
+ term.c.attr.mode |= ATTR_BOLD;
+ break;
+ case 2:
+ term.c.attr.mode |= ATTR_FAINT;
+ break;
+ case 3:
+ term.c.attr.mode |= ATTR_ITALIC;
+ break;
+ case 4:
+ term.c.attr.mode |= ATTR_UNDERLINE;
+ if (i + 1 < l) {
+ idx = attr[++i];
+ if (BETWEEN(idx, 1, 5)) {
+ tsetdecorstyle(&term.c.attr, idx);
+ } else if (idx == 0) {
+ term.c.attr.mode &= ~ATTR_UNDERLINE;
+ tsetdecorstyle(&term.c.attr, 0);
+ } else {
+ fprintf(stderr,
+ "erresc: unknown underline "
+ "style %d\n",
+ idx);
+ }
+ }
+ break;
+ case 5: /* slow blink */
+ /* FALLTHROUGH */
+ case 6: /* rapid blink */
+ term.c.attr.mode |= ATTR_BLINK;
+ break;
+ case 7:
+ term.c.attr.mode |= ATTR_REVERSE;
+ break;
+ case 8:
+ term.c.attr.mode |= ATTR_INVISIBLE;
+ break;
+ case 9:
+ term.c.attr.mode |= ATTR_STRUCK;
+ break;
+ case 22:
+ term.c.attr.mode &= ~(ATTR_BOLD | ATTR_FAINT);
+ break;
+ case 23:
+ term.c.attr.mode &= ~ATTR_ITALIC;
+ break;
+ case 24:
+ term.c.attr.mode &= ~ATTR_UNDERLINE;
+ tsetdecorstyle(&term.c.attr, 0);
+ break;
+ case 25:
+ term.c.attr.mode &= ~ATTR_BLINK;
+ break;
+ case 27:
+ term.c.attr.mode &= ~ATTR_REVERSE;
+ break;
+ case 28:
+ term.c.attr.mode &= ~ATTR_INVISIBLE;
+ break;
+ case 29:
+ term.c.attr.mode &= ~ATTR_STRUCK;
+ break;
+ case 38:
+ if ((idx = tdefcolor(attr, &i, l)) >= 0)
+ term.c.attr.fg = idx;
+ break;
+ case 39:
+ term.c.attr.fg = defaultfg;
+ break;
+ case 48:
+ if ((idx = tdefcolor(attr, &i, l)) >= 0)
+ term.c.attr.bg = idx;
+ break;
+ case 49:
+ term.c.attr.bg = defaultbg;
+ break;
+ case 58:
+ if ((idx = tdefcolor(attr, &i, l)) >= 0)
+ tsetdecorcolor(&term.c.attr, idx);
+ break;
+ case 59:
+ tsetdecorcolor(&term.c.attr, DECOR_DEFAULT_COLOR);
+ break;
+ default:
+ if (BETWEEN(attr[i], 30, 37)) {
+ term.c.attr.fg = attr[i] - 30;
+ } else if (BETWEEN(attr[i], 40, 47)) {
+ term.c.attr.bg = attr[i] - 40;
+ } else if (BETWEEN(attr[i], 90, 97)) {
+ term.c.attr.fg = attr[i] - 90 + 8;
+ } else if (BETWEEN(attr[i], 100, 107)) {
+ term.c.attr.bg = attr[i] - 100 + 8;
+ } else {
+ fprintf(stderr,
+ "erresc(default): gfx attr %d unknown\n",
+ attr[i]);
+ csidump();
+ }
+ break;
+ }
+ }
+}
+
+void
+tsetscroll(int t, int b)
+{
+ int temp;
+
+ LIMIT(t, 0, term.row-1);
+ LIMIT(b, 0, term.row-1);
+ if (t > b) {
+ temp = t;
+ t = b;
+ b = temp;
+ }
+ term.top = t;
+ term.bot = b;
+}
+
+void
+tsetmode(int priv, int set, const int *args, int narg)
+{
+ int alt; const int *lim;
+
+ for (lim = args + narg; args < lim; ++args) {
+ if (priv) {
+ switch (*args) {
+ case 1: /* DECCKM -- Cursor key */
+ xsetmode(set, MODE_APPCURSOR);
+ break;
+ case 5: /* DECSCNM -- Reverse video */
+ xsetmode(set, MODE_REVERSE);
+ break;
+ case 6: /* DECOM -- Origin */
+ MODBIT(term.c.state, set, CURSOR_ORIGIN);
+ tmoveato(0, 0);
+ break;
+ case 7: /* DECAWM -- Auto wrap */
+ MODBIT(term.mode, set, MODE_WRAP);
+ break;
+ case 0: /* Error (IGNORED) */
+ case 2: /* DECANM -- ANSI/VT52 (IGNORED) */
+ case 3: /* DECCOLM -- Column (IGNORED) */
+ case 4: /* DECSCLM -- Scroll (IGNORED) */
+ case 8: /* DECARM -- Auto repeat (IGNORED) */
+ case 18: /* DECPFF -- Printer feed (IGNORED) */
+ case 19: /* DECPEX -- Printer extent (IGNORED) */
+ case 42: /* DECNRCM -- National characters (IGNORED) */
+ case 12: /* att610 -- Start blinking cursor (IGNORED) */
+ break;
+ case 25: /* DECTCEM -- Text Cursor Enable Mode */
+ xsetmode(!set, MODE_HIDE);
+ break;
+ case 9: /* X10 mouse compatibility mode */
+ xsetpointermotion(0);
+ xsetmode(0, MODE_MOUSE);
+ xsetmode(set, MODE_MOUSEX10);
+ break;
+ case 1000: /* 1000: report button press */
+ xsetpointermotion(0);
+ xsetmode(0, MODE_MOUSE);
+ xsetmode(set, MODE_MOUSEBTN);
+ break;
+ case 1002: /* 1002: report motion on button press */
+ xsetpointermotion(0);
+ xsetmode(0, MODE_MOUSE);
+ xsetmode(set, MODE_MOUSEMOTION);
+ break;
+ case 1003: /* 1003: enable all mouse motions */
+ xsetpointermotion(set);
+ xsetmode(0, MODE_MOUSE);
+ xsetmode(set, MODE_MOUSEMANY);
+ break;
+ case 1004: /* 1004: send focus events to tty */
+ xsetmode(set, MODE_FOCUS);
+ break;
+ case 1006: /* 1006: extended reporting mode */
+ xsetmode(set, MODE_MOUSESGR);
+ break;
+ case 1034:
+ xsetmode(set, MODE_8BIT);
+ break;
+ case 1049: /* swap screen & set/restore cursor as xterm */
+ if (!allowaltscreen)
+ break;
+ tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
+ /* FALLTHROUGH */
+ case 47: /* swap screen */
+ case 1047:
+ if (!allowaltscreen)
+ break;
+ alt = IS_SET(MODE_ALTSCREEN);
+ if (alt) {
+ tclearregion(0, 0, term.col-1,
+ term.row-1);
+ }
+ if (set ^ alt) /* set is always 1 or 0 */
+ tswapscreen();
+ if (*args != 1049)
+ break;
+ /* FALLTHROUGH */
+ case 1048:
+ tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
+ break;
+ case 2004: /* 2004: bracketed paste mode */
+ xsetmode(set, MODE_BRCKTPASTE);
+ break;
+ /* Not implemented mouse modes. See comments there. */
+ case 1001: /* mouse highlight mode; can hang the
+ terminal by design when implemented. */
+ case 1005: /* UTF-8 mouse mode; will confuse
+ applications not supporting UTF-8
+ and luit. */
+ case 1015: /* urxvt mangled mouse mode; incompatible
+ and can be mistaken for other control
+ codes. */
+ break;
+ default:
+ fprintf(stderr,
+ "erresc: unknown private set/reset mode %d\n",
+ *args);
+ break;
+ }
+ } else {
+ switch (*args) {
+ case 0: /* Error (IGNORED) */
+ break;
+ case 2:
+ xsetmode(set, MODE_KBDLOCK);
+ break;
+ case 4: /* IRM -- Insertion-replacement */
+ MODBIT(term.mode, set, MODE_INSERT);
+ break;
+ case 12: /* SRM -- Send/Receive */
+ MODBIT(term.mode, !set, MODE_ECHO);
+ break;
+ case 20: /* LNM -- Linefeed/new line */
+ MODBIT(term.mode, set, MODE_CRLF);
+ break;
+ default:
+ fprintf(stderr,
+ "erresc: unknown set/reset mode %d\n",
+ *args);
+ break;
+ }
+ }
+ }
+}
+
+void
+csihandle(void)
+{
+ char buf[40];
+ int len;
+
+ switch (csiescseq.mode[0]) {
+ default:
+ unknown:
+ fprintf(stderr, "erresc: unknown csi ");
+ csidump();
+ /* die(""); */
+ break;
+ case '@': /* ICH -- Insert <n> blank char */
+ DEFAULT(csiescseq.arg[0], 1);
+ tinsertblank(csiescseq.arg[0]);
+ break;
+ case 'A': /* CUU -- Cursor <n> Up */
+ DEFAULT(csiescseq.arg[0], 1);
+ tmoveto(term.c.x, term.c.y-csiescseq.arg[0]);
+ break;
+ case 'B': /* CUD -- Cursor <n> Down */
+ case 'e': /* VPR --Cursor <n> Down */
+ DEFAULT(csiescseq.arg[0], 1);
+ tmoveto(term.c.x, term.c.y+csiescseq.arg[0]);
+ break;
+ case 'i': /* MC -- Media Copy */
+ switch (csiescseq.arg[0]) {
+ case 0:
+ tdump();
+ break;
+ case 1:
+ tdumpline(term.c.y);
+ break;
+ case 2:
+ tdumpsel();
+ break;
+ case 4:
+ term.mode &= ~MODE_PRINT;
+ break;
+ case 5:
+ term.mode |= MODE_PRINT;
+ break;
+ }
+ break;
+ case 'c': /* DA -- Device Attributes */
+ if (csiescseq.arg[0] == 0)
+ ttywrite(vtiden, strlen(vtiden), 0);
+ break;
+ case 'b': /* REP -- if last char is printable print it <n> more times */
+ DEFAULT(csiescseq.arg[0], 1);
+ if (term.lastc)
+ while (csiescseq.arg[0]-- > 0)
+ tputc(term.lastc);
+ break;
+ case 'C': /* CUF -- Cursor <n> Forward */
+ case 'a': /* HPR -- Cursor <n> Forward */
+ DEFAULT(csiescseq.arg[0], 1);
+ tmoveto(term.c.x+csiescseq.arg[0], term.c.y);
+ break;
+ case 'D': /* CUB -- Cursor <n> Backward */
+ DEFAULT(csiescseq.arg[0], 1);
+ tmoveto(term.c.x-csiescseq.arg[0], term.c.y);
+ break;
+ case 'E': /* CNL -- Cursor <n> Down and first col */
+ DEFAULT(csiescseq.arg[0], 1);
+ tmoveto(0, term.c.y+csiescseq.arg[0]);
+ break;
+ case 'F': /* CPL -- Cursor <n> Up and first col */
+ DEFAULT(csiescseq.arg[0], 1);
+ tmoveto(0, term.c.y-csiescseq.arg[0]);
+ break;
+ case 'g': /* TBC -- Tabulation clear */
+ switch (csiescseq.arg[0]) {
+ case 0: /* clear current tab stop */
+ term.tabs[term.c.x] = 0;
+ break;
+ case 3: /* clear all the tabs */
+ memset(term.tabs, 0, term.col * sizeof(*term.tabs));
+ break;
+ default:
+ goto unknown;
+ }
+ break;
+ case 'G': /* CHA -- Move to <col> */
+ case '`': /* HPA */
+ DEFAULT(csiescseq.arg[0], 1);
+ tmoveto(csiescseq.arg[0]-1, term.c.y);
+ break;
+ case 'H': /* CUP -- Move to <row> <col> */
+ case 'f': /* HVP */
+ DEFAULT(csiescseq.arg[0], 1);
+ DEFAULT(csiescseq.arg[1], 1);
+ tmoveato(csiescseq.arg[1]-1, csiescseq.arg[0]-1);
+ break;
+ case 'I': /* CHT -- Cursor Forward Tabulation <n> tab stops */
+ DEFAULT(csiescseq.arg[0], 1);
+ tputtab(csiescseq.arg[0]);
+ break;
+ case 'J': /* ED -- Clear screen */
+ switch (csiescseq.arg[0]) {
+ case 0: /* below */
+ tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
+ if (term.c.y < term.row-1) {
+ tclearregion(0, term.c.y+1, term.col-1,
+ term.row-1);
+ }
+ break;
+ case 1: /* above */
+ if (term.c.y > 1)
+ tclearregion(0, 0, term.col-1, term.c.y-1);
+ tclearregion(0, term.c.y, term.c.x, term.c.y);
+ break;
+ case 2: /* all */
+ tclearregion(0, 0, term.col-1, term.row-1);
+ break;
+ default:
+ goto unknown;
+ }
+ break;
+ case 'K': /* EL -- Clear line */
+ switch (csiescseq.arg[0]) {
+ case 0: /* right */
+ tclearregion(term.c.x, term.c.y, term.col-1,
+ term.c.y);
+ break;
+ case 1: /* left */
+ tclearregion(0, term.c.y, term.c.x, term.c.y);
+ break;
+ case 2: /* all */
+ tclearregion(0, term.c.y, term.col-1, term.c.y);
+ break;
+ }
+ break;
+ case 'S': /* SU -- Scroll <n> line up */
+ DEFAULT(csiescseq.arg[0], 1);
+ tscrollup(term.top, csiescseq.arg[0], 0);
+ break;
+ case 'T': /* SD -- Scroll <n> line down */
+ DEFAULT(csiescseq.arg[0], 1);
+ tscrolldown(term.top, csiescseq.arg[0], 0);
+ break;
+ case 'L': /* IL -- Insert <n> blank lines */
+ DEFAULT(csiescseq.arg[0], 1);
+ tinsertblankline(csiescseq.arg[0]);
+ break;
+ case 'l': /* RM -- Reset Mode */
+ tsetmode(csiescseq.priv, 0, csiescseq.arg, csiescseq.narg);
+ break;
+ case 'M': /* DL -- Delete <n> lines */
+ DEFAULT(csiescseq.arg[0], 1);
+ tdeleteline(csiescseq.arg[0]);
+ break;
+ case 'X': /* ECH -- Erase <n> char */
+ DEFAULT(csiescseq.arg[0], 1);
+ tclearregion(term.c.x, term.c.y,
+ term.c.x + csiescseq.arg[0] - 1, term.c.y);
+ break;
+ case 'P': /* DCH -- Delete <n> char */
+ DEFAULT(csiescseq.arg[0], 1);
+ tdeletechar(csiescseq.arg[0]);
+ break;
+ case 'Z': /* CBT -- Cursor Backward Tabulation <n> tab stops */
+ DEFAULT(csiescseq.arg[0], 1);
+ tputtab(-csiescseq.arg[0]);
+ break;
+ case 'd': /* VPA -- Move to <row> */
+ DEFAULT(csiescseq.arg[0], 1);
+ tmoveato(term.c.x, csiescseq.arg[0]-1);
+ break;
+ case 'h': /* SM -- Set terminal mode */
+ tsetmode(csiescseq.priv, 1, csiescseq.arg, csiescseq.narg);
+ break;
+ case 'm': /* SGR -- Terminal attribute (color) */
+ tsetattr(csiescseq.arg, csiescseq.narg);
+ break;
+ case 'n': /* DSR -- Device Status Report */
+ switch (csiescseq.arg[0]) {
+ case 5: /* Status Report "OK" `0n` */
+ ttywrite("\033[0n", sizeof("\033[0n") - 1, 0);
+ break;
+ case 6: /* Report Cursor Position (CPR) "<row>;<column>R" */
+ len = snprintf(buf, sizeof(buf), "\033[%i;%iR",
+ term.c.y+1, term.c.x+1);
+ ttywrite(buf, len, 0);
+ break;
+ default:
+ goto unknown;
+ }
+ break;
+ case 'r': /* DECSTBM -- Set Scrolling Region */
+ if (csiescseq.priv) {
+ goto unknown;
+ } else {
+ DEFAULT(csiescseq.arg[0], 1);
+ DEFAULT(csiescseq.arg[1], term.row);
+ tsetscroll(csiescseq.arg[0]-1, csiescseq.arg[1]-1);
+ tmoveato(0, 0);
+ }
+ break;
+ case 's': /* DECSC -- Save cursor position (ANSI.SYS) */
+ tcursor(CURSOR_SAVE);
+ break;
+ case 'u': /* DECRC -- Restore cursor position (ANSI.SYS) */
+ tcursor(CURSOR_LOAD);
+ break;
+ case ' ':
+ switch (csiescseq.mode[1]) {
+ case 'q': /* DECSCUSR -- Set Cursor Style */
+ if (xsetcursor(csiescseq.arg[0]))
+ goto unknown;
+ break;
+ default:
+ goto unknown;
+ }
+ break;
+ case '>':
+ switch (csiescseq.mode[1]) {
+ case 'q': /* XTVERSION -- Print terminal name and version */
+ len = snprintf(buf, sizeof(buf),
+ "\033P>|st-graphics(%s)\033\\", VERSION);
+ ttywrite(buf, len, 0);
+ break;
+ default:
+ goto unknown;
+ }
+ break;
+ case 't': /* XTWINOPS -- Window manipulation */
+ switch (csiescseq.arg[0]) {
+ case 14: /* Report text area size in pixels. */
+ len = snprintf(buf, sizeof(buf), "\033[4;%i;%it",
+ term.pixh, term.pixw);
+ ttywrite(buf, len, 0);
+ break;
+ case 16: /* Report character cell size in pixels. */
+ len = snprintf(buf, sizeof(buf), "\033[6;%i;%it",
+ term.pixh / term.row,
+ term.pixw / term.col);
+ ttywrite(buf, len, 0);
+ break;
+ case 18: /* Report the size of the text area in characters. */
+ len = snprintf(buf, sizeof(buf), "\033[8;%i;%it",
+ term.row, term.col);
+ ttywrite(buf, len, 0);
+ break;
+ default:
+ goto unknown;
+ }
+ break;
+ }
+}
+
+void
+csidump(void)
+{
+ size_t i;
+ uint c;
+
+ fprintf(stderr, "ESC[");
+ for (i = 0; i < csiescseq.len; i++) {
+ c = csiescseq.buf[i] & 0xff;
+ if (isprint(c)) {
+ putc(c, stderr);
+ } else if (c == '\n') {
+ fprintf(stderr, "(\\n)");
+ } else if (c == '\r') {
+ fprintf(stderr, "(\\r)");
+ } else if (c == 0x1b) {
+ fprintf(stderr, "(\\e)");
+ } else {
+ fprintf(stderr, "(%02x)", c);
+ }
+ }
+ putc('\n', stderr);
+}
+
+void
+csireset(void)
+{
+ memset(&csiescseq, 0, sizeof(csiescseq));
+}
+
+void
+osc_color_response(int num, int index, int is_osc4)
+{
+ int n;
+ char buf[32];
+ unsigned char r, g, b;
+
+ if (xgetcolor(is_osc4 ? num : index, &r, &g, &b)) {
+ fprintf(stderr, "erresc: failed to fetch %s color %d\n",
+ is_osc4 ? "osc4" : "osc",
+ is_osc4 ? num : index);
+ return;
+ }
+
+ n = snprintf(buf, sizeof buf, "\033]%s%d;rgb:%02x%02x/%02x%02x/%02x%02x\007",
+ is_osc4 ? "4;" : "", num, r, r, g, g, b, b);
+ if (n < 0 || n >= sizeof(buf)) {
+ fprintf(stderr, "error: %s while printing %s response\n",
+ n < 0 ? "snprintf failed" : "truncation occurred",
+ is_osc4 ? "osc4" : "osc");
+ } else {
+ ttywrite(buf, n, 1);
+ }
+}
+
+void
+strhandle(void)
+{
+ char *p = NULL, *dec;
+ int j, narg, par;
+ const struct { int idx; char *str; } osc_table[] = {
+ { defaultfg, "foreground" },
+ { defaultbg, "background" },
+ { defaultcs, "cursor" }
+ };
+
+ term.esc &= ~(ESC_STR_END|ESC_STR);
+ strparse();
+ par = (narg = strescseq.narg) ? atoi(strescseq.args[0]) : 0;
+
+ switch (strescseq.type) {
+ case ']': /* OSC -- Operating System Command */
+ switch (par) {
+ case 0:
+ if (narg > 1) {
+ xsettitle(strescseq.args[1]);
+ xseticontitle(strescseq.args[1]);
+ }
+ return;
+ case 1:
+ if (narg > 1)
+ xseticontitle(strescseq.args[1]);
+ return;
+ case 2:
+ if (narg > 1)
+ xsettitle(strescseq.args[1]);
+ return;
+ case 52:
+ if (narg > 2 && allowwindowops) {
+ dec = base64dec(strescseq.args[2]);
+ if (dec) {
+ xsetsel(dec);
+ xclipcopy();
+ } else {
+ fprintf(stderr, "erresc: invalid base64\n");
+ }
+ }
+ return;
+ case 10:
+ case 11:
+ case 12:
+ if (narg < 2)
+ break;
+ p = strescseq.args[1];
+ if ((j = par - 10) < 0 || j >= LEN(osc_table))
+ break; /* shouldn't be possible */
+
+ if (!strcmp(p, "?")) {
+ osc_color_response(par, osc_table[j].idx, 0);
+ } else if (xsetcolorname(osc_table[j].idx, p)) {
+ fprintf(stderr, "erresc: invalid %s color: %s\n",
+ osc_table[j].str, p);
+ } else {
+ tfulldirt();
+ }
+ return;
+ case 4: /* color set */
+ if (narg < 3)
+ break;
+ p = strescseq.args[2];
+ /* FALLTHROUGH */
+ case 104: /* color reset */
+ j = (narg > 1) ? atoi(strescseq.args[1]) : -1;
+
+ if (p && !strcmp(p, "?")) {
+ osc_color_response(j, 0, 1);
+ } else if (xsetcolorname(j, p)) {
+ if (par == 104 && narg <= 1) {
+ xloadcols();
+ return; /* color reset without parameter */
+ }
+ fprintf(stderr, "erresc: invalid color j=%d, p=%s\n",
+ j, p ? p : "(null)");
+ } else {
+ /*
+ * TODO if defaultbg color is changed, borders
+ * are dirty
+ */
+ tfulldirt();
+ }
+ return;
+ }
+ break;
+ case 'k': /* old title set compatibility */
+ xsettitle(strescseq.args[0]);
+ return;
+ case '_': /* APC -- Application Program Command */
+ if (gr_parse_command(strescseq.buf, strescseq.len)) {
+ GraphicsCommandResult *res = &graphics_command_result;
+ if (res->create_placeholder) {
+ tcreateimgplaceholder(
+ res->placeholder.image_id,
+ res->placeholder.placement_id,
+ res->placeholder.columns,
+ res->placeholder.rows,
+ res->placeholder.do_not_move_cursor);
+ }
+ if (res->response[0])
+ ttywrite(res->response, strlen(res->response),
+ 0);
+ if (res->redraw)
+ tfulldirt();
+ return;
+ }
+ return;
+ case 'P': /* DCS -- Device Control String */
+ case '^': /* PM -- Privacy Message */
+ return;
+ }
+
+ fprintf(stderr, "erresc: unknown str ");
+ strdump();
+}
+
+void
+strparse(void)
+{
+ int c;
+ char *p = strescseq.buf;
+
+ strescseq.narg = 0;
+ strescseq.buf[strescseq.len] = '\0';
+
+ if (*p == '\0')
+ return;
+
+ while (strescseq.narg < STR_ARG_SIZ) {
+ strescseq.args[strescseq.narg++] = p;
+ while ((c = *p) != ';' && c != '\0')
+ ++p;
+ if (c == '\0')
+ return;
+ *p++ = '\0';
+ }
+}
+
+void
+strdump(void)
+{
+ size_t i;
+ uint c;
+
+ fprintf(stderr, "ESC%c", strescseq.type);
+ for (i = 0; i < strescseq.len; i++) {
+ c = strescseq.buf[i] & 0xff;
+ if (c == '\0') {
+ putc('\n', stderr);
+ return;
+ } else if (isprint(c)) {
+ putc(c, stderr);
+ } else if (c == '\n') {
+ fprintf(stderr, "(\\n)");
+ } else if (c == '\r') {
+ fprintf(stderr, "(\\r)");
+ } else if (c == 0x1b) {
+ fprintf(stderr, "(\\e)");
+ } else {
+ fprintf(stderr, "(%02x)", c);
+ }
+ }
+ fprintf(stderr, "ESC\\\n");
+}
+
+void
+strreset(void)
+{
+ strescseq = (STREscape){
+ .buf = xrealloc(strescseq.buf, STR_BUF_SIZ),
+ .siz = STR_BUF_SIZ,
+ };
+}
+
+void
+sendbreak(const Arg *arg)
+{
+ if (tcsendbreak(cmdfd, 0))
+ perror("Error sending break");
+}
+
+void
+tprinter(char *s, size_t len)
+{
+ if (iofd != -1 && xwrite(iofd, s, len) < 0) {
+ perror("Error writing to output file");
+ close(iofd);
+ iofd = -1;
+ }
+}
+
+void
+toggleprinter(const Arg *arg)
+{
+ term.mode ^= MODE_PRINT;
+}
+
+void
+printscreen(const Arg *arg)
+{
+ tdump();
+}
+
+void
+printsel(const Arg *arg)
+{
+ tdumpsel();
+}
+
+void
+tdumpsel(void)
+{
+ char *ptr;
+
+ if ((ptr = getsel())) {
+ tprinter(ptr, strlen(ptr));
+ free(ptr);
+ }
+}
+
+void
+tdumpline(int n)
+{
+ char buf[UTF_SIZ];
+ const Glyph *bp, *end;
+
+ bp = &term.line[n][0];
+ end = &bp[MIN(tlinelen(n), term.col) - 1];
+ if (bp != end || bp->u != ' ') {
+ for ( ; bp <= end; ++bp)
+ tprinter(buf, utf8encode(bp->u, buf));
+ }
+ tprinter("\n", 1);
+}
+
+void
+tdump(void)
+{
+ int i;
+
+ for (i = 0; i < term.row; ++i)
+ tdumpline(i);
+}
+
+void
+tputtab(int n)
+{
+ uint x = term.c.x;
+
+ if (n > 0) {
+ while (x < term.col && n--)
+ for (++x; x < term.col && !term.tabs[x]; ++x)
+ /* nothing */ ;
+ } else if (n < 0) {
+ while (x > 0 && n++)
+ for (--x; x > 0 && !term.tabs[x]; --x)
+ /* nothing */ ;
+ }
+ term.c.x = LIMIT(x, 0, term.col-1);
+}
+
+void
+tdefutf8(char ascii)
+{
+ if (ascii == 'G')
+ term.mode |= MODE_UTF8;
+ else if (ascii == '@')
+ term.mode &= ~MODE_UTF8;
+}
+
+void
+tdeftran(char ascii)
+{
+ static char cs[] = "0B";
+ static int vcs[] = {CS_GRAPHIC0, CS_USA};
+ char *p;
+
+ if ((p = strchr(cs, ascii)) == NULL) {
+ fprintf(stderr, "esc unhandled charset: ESC ( %c\n", ascii);
+ } else {
+ term.trantbl[term.icharset] = vcs[p - cs];
+ }
+}
+
+void
+tdectest(char c)
+{
+ int x, y;
+
+ if (c == '8') { /* DEC screen alignment test. */
+ for (x = 0; x < term.col; ++x) {
+ for (y = 0; y < term.row; ++y)
+ tsetchar('E', &term.c.attr, x, y);
+ }
+ }
+}
+
+void
+tstrsequence(uchar c)
+{
+ switch (c) {
+ case 0x90: /* DCS -- Device Control String */
+ c = 'P';
+ break;
+ case 0x9f: /* APC -- Application Program Command */
+ c = '_';
+ break;
+ case 0x9e: /* PM -- Privacy Message */
+ c = '^';
+ break;
+ case 0x9d: /* OSC -- Operating System Command */
+ c = ']';
+ break;
+ }
+ strreset();
+ strescseq.type = c;
+ term.esc |= ESC_STR;
+}
+
+void
+tcontrolcode(uchar ascii)
+{
+ switch (ascii) {
+ case '\t': /* HT */
+ tputtab(1);
+ return;
+ case '\b': /* BS */
+ tmoveto(term.c.x-1, term.c.y);
+ return;
+ case '\r': /* CR */
+ tmoveto(0, term.c.y);
+ return;
+ case '\f': /* LF */
+ case '\v': /* VT */
+ case '\n': /* LF */
+ /* go to first col if the mode is set */
+ tnewline(IS_SET(MODE_CRLF));
+ return;
+ case '\a': /* BEL */
+ if (term.esc & ESC_STR_END) {
+ /* backwards compatibility to xterm */
+ strhandle();
+ } else {
+ xbell();
+ }
+ break;
+ case '\033': /* ESC */
+ csireset();
+ term.esc &= ~(ESC_CSI|ESC_ALTCHARSET|ESC_TEST);
+ term.esc |= ESC_START;
+ return;
+ case '\016': /* SO (LS1 -- Locking shift 1) */
+ case '\017': /* SI (LS0 -- Locking shift 0) */
+ term.charset = 1 - (ascii - '\016');
+ return;
+ case '\032': /* SUB */
+ tsetchar('?', &term.c.attr, term.c.x, term.c.y);
+ /* FALLTHROUGH */
+ case '\030': /* CAN */
+ csireset();
+ break;
+ case '\005': /* ENQ (IGNORED) */
+ case '\000': /* NUL (IGNORED) */
+ case '\021': /* XON (IGNORED) */
+ case '\023': /* XOFF (IGNORED) */
+ case 0177: /* DEL (IGNORED) */
+ return;
+ case 0x80: /* TODO: PAD */
+ case 0x81: /* TODO: HOP */
+ case 0x82: /* TODO: BPH */
+ case 0x83: /* TODO: NBH */
+ case 0x84: /* TODO: IND */
+ break;
+ case 0x85: /* NEL -- Next line */
+ tnewline(1); /* always go to first col */
+ break;
+ case 0x86: /* TODO: SSA */
+ case 0x87: /* TODO: ESA */
+ break;
+ case 0x88: /* HTS -- Horizontal tab stop */
+ term.tabs[term.c.x] = 1;
+ break;
+ case 0x89: /* TODO: HTJ */
+ case 0x8a: /* TODO: VTS */
+ case 0x8b: /* TODO: PLD */
+ case 0x8c: /* TODO: PLU */
+ case 0x8d: /* TODO: RI */
+ case 0x8e: /* TODO: SS2 */
+ case 0x8f: /* TODO: SS3 */
+ case 0x91: /* TODO: PU1 */
+ case 0x92: /* TODO: PU2 */
+ case 0x93: /* TODO: STS */
+ case 0x94: /* TODO: CCH */
+ case 0x95: /* TODO: MW */
+ case 0x96: /* TODO: SPA */
+ case 0x97: /* TODO: EPA */
+ case 0x98: /* TODO: SOS */
+ case 0x99: /* TODO: SGCI */
+ break;
+ case 0x9a: /* DECID -- Identify Terminal */
+ ttywrite(vtiden, strlen(vtiden), 0);
+ break;
+ case 0x9b: /* TODO: CSI */
+ case 0x9c: /* TODO: ST */
+ break;
+ case 0x90: /* DCS -- Device Control String */
+ case 0x9d: /* OSC -- Operating System Command */
+ case 0x9e: /* PM -- Privacy Message */
+ case 0x9f: /* APC -- Application Program Command */
+ tstrsequence(ascii);
+ return;
+ }
+ /* only CAN, SUB, \a and C1 chars interrupt a sequence */
+ term.esc &= ~(ESC_STR_END|ESC_STR);
+}
+
+/*
+ * returns 1 when the sequence is finished and it hasn't to read
+ * more characters for this sequence, otherwise 0
+ */
+int
+eschandle(uchar ascii)
+{
+ switch (ascii) {
+ case '[':
+ term.esc |= ESC_CSI;
+ return 0;
+ case '#':
+ term.esc |= ESC_TEST;
+ return 0;
+ case '%':
+ term.esc |= ESC_UTF8;
+ return 0;
+ case 'P': /* DCS -- Device Control String */
+ case '_': /* APC -- Application Program Command */
+ case '^': /* PM -- Privacy Message */
+ case ']': /* OSC -- Operating System Command */
+ case 'k': /* old title set compatibility */
+ tstrsequence(ascii);
+ return 0;
+ case 'n': /* LS2 -- Locking shift 2 */
+ case 'o': /* LS3 -- Locking shift 3 */
+ term.charset = 2 + (ascii - 'n');
+ break;
+ case '(': /* GZD4 -- set primary charset G0 */
+ case ')': /* G1D4 -- set secondary charset G1 */
+ case '*': /* G2D4 -- set tertiary charset G2 */
+ case '+': /* G3D4 -- set quaternary charset G3 */
+ term.icharset = ascii - '(';
+ term.esc |= ESC_ALTCHARSET;
+ return 0;
+ case 'D': /* IND -- Linefeed */
+ if (term.c.y == term.bot) {
+ tscrollup(term.top, 1, 1);
+ } else {
+ tmoveto(term.c.x, term.c.y+1);
+ }
+ break;
+ case 'E': /* NEL -- Next line */
+ tnewline(1); /* always go to first col */
+ break;
+ case 'H': /* HTS -- Horizontal tab stop */
+ term.tabs[term.c.x] = 1;
+ break;
+ case 'M': /* RI -- Reverse index */
+ if (term.c.y == term.top) {
+ tscrolldown(term.top, 1, 1);
+ } else {
+ tmoveto(term.c.x, term.c.y-1);
+ }
+ break;
+ case 'Z': /* DECID -- Identify Terminal */
+ ttywrite(vtiden, strlen(vtiden), 0);
+ break;
+ case 'c': /* RIS -- Reset to initial state */
+ treset();
+ resettitle();
+ xloadcols();
+ break;
+ case '=': /* DECPAM -- Application keypad */
+ xsetmode(1, MODE_APPKEYPAD);
+ break;
+ case '>': /* DECPNM -- Normal keypad */
+ xsetmode(0, MODE_APPKEYPAD);
+ break;
+ case '7': /* DECSC -- Save Cursor */
+ tcursor(CURSOR_SAVE);
+ break;
+ case '8': /* DECRC -- Restore Cursor */
+ tcursor(CURSOR_LOAD);
+ break;
+ case '\\': /* ST -- String Terminator */
+ if (term.esc & ESC_STR_END)
+ strhandle();
+ break;
+ default:
+ fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n",
+ (uchar) ascii, isprint(ascii)? ascii:'.');
+ break;
+ }
+ return 1;
+}
+
+void
+tputc(Rune u)
+{
+ char c[UTF_SIZ];
+ int control;
+ int width, len;
+ Glyph *gp;
+
+ control = ISCONTROL(u);
+ if (u < 127 || !IS_SET(MODE_UTF8)) {
+ c[0] = u;
+ width = len = 1;
+ } else {
+ len = utf8encode(u, c);
+ if (!control && (width = wcwidth(u)) == -1)
+ width = 1;
+ }
+
+ if (IS_SET(MODE_PRINT))
+ tprinter(c, len);
+
+ /*
+ * STR sequence must be checked before anything else
+ * because it uses all following characters until it
+ * receives a ESC, a SUB, a ST or any other C1 control
+ * character.
+ */
+ if (term.esc & ESC_STR) {
+ if (u == '\a' || u == 030 || u == 032 || u == 033 ||
+ ISCONTROLC1(u)) {
+ term.esc &= ~(ESC_START|ESC_STR);
+ term.esc |= ESC_STR_END;
+ goto check_control_code;
+ }
+
+ if (strescseq.len+len >= strescseq.siz) {
+ /*
+ * Here is a bug in terminals. If the user never sends
+ * some code to stop the str or esc command, then st
+ * will stop responding. But this is better than
+ * silently failing with unknown characters. At least
+ * then users will report back.
+ *
+ * In the case users ever get fixed, here is the code:
+ */
+ /*
+ * term.esc = 0;
+ * strhandle();
+ */
+ if (strescseq.siz > (SIZE_MAX - UTF_SIZ) / 2)
+ return;
+ strescseq.siz *= 2;
+ strescseq.buf = xrealloc(strescseq.buf, strescseq.siz);
+ }
+
+ memmove(&strescseq.buf[strescseq.len], c, len);
+ strescseq.len += len;
+ return;
+ }
+
+check_control_code:
+ /*
+ * Actions of control codes must be performed as soon they arrive
+ * because they can be embedded inside a control sequence, and
+ * they must not cause conflicts with sequences.
+ */
+ if (control) {
+ /* in UTF-8 mode ignore handling C1 control characters */
+ if (IS_SET(MODE_UTF8) && ISCONTROLC1(u))
+ return;
+ tcontrolcode(u);
+ /*
+ * control codes are not shown ever
+ */
+ if (!term.esc)
+ term.lastc = 0;
+ return;
+ } else if (term.esc & ESC_START) {
+ if (term.esc & ESC_CSI) {
+ csiescseq.buf[csiescseq.len++] = u;
+ if (BETWEEN(u, 0x40, 0x7E)
+ || csiescseq.len >= \
+ sizeof(csiescseq.buf)-1) {
+ term.esc = 0;
+ csiparse();
+ csihandle();
+ }
+ return;
+ } else if (term.esc & ESC_UTF8) {
+ tdefutf8(u);
+ } else if (term.esc & ESC_ALTCHARSET) {
+ tdeftran(u);
+ } else if (term.esc & ESC_TEST) {
+ tdectest(u);
+ } else {
+ if (!eschandle(u))
+ return;
+ /* sequence already finished */
+ }
+ term.esc = 0;
+ /*
+ * All characters which form part of a sequence are not
+ * printed
+ */
+ return;
+ }
+ if (selected(term.c.x, term.c.y))
+ selclear();
+
+ if (width == 0) {
+ // It's probably a combining char. Combining characters are not
+ // supported, so we just ignore them, unless it denotes the row and
+ // column of an image character.
+ if (term.c.y <= 0 && term.c.x <= 0)
+ return;
+ else if (term.c.x == 0)
+ gp = &term.line[term.c.y-1][term.col-1];
+ else if (term.c.state & CURSOR_WRAPNEXT)
+ gp = &term.line[term.c.y][term.c.x];
+ else
+ gp = &term.line[term.c.y][term.c.x-1];
+ uint16_t num = diacritic_to_num(u);
+ if (num && (gp->mode & ATTR_IMAGE)) {
+ unsigned diaccount = tgetimgdiacriticcount(gp);
+ if (diaccount == 0)
+ tsetimgrow(gp, num);
+ else if (diaccount == 1)
+ tsetimgcol(gp, num);
+ else if (diaccount == 2)
+ tsetimg4thbyteplus1(gp, num);
+ tsetimgdiacriticcount(gp, diaccount + 1);
+ }
+ term.lastc = u;
+ return;
+ }
+
+ gp = &term.line[term.c.y][term.c.x];
+ if (IS_SET(MODE_WRAP) && (term.c.state & CURSOR_WRAPNEXT)) {
+ gp->mode |= ATTR_WRAP;
+ tnewline(1);
+ gp = &term.line[term.c.y][term.c.x];
+ }
+
+ if (IS_SET(MODE_INSERT) && term.c.x+width < term.col) {
+ memmove(gp+width, gp, (term.col - term.c.x - width) * sizeof(Glyph));
+ gp->mode &= ~ATTR_WIDE;
+ }
+
+ if (term.c.x+width > term.col) {
+ tnewline(1);
+ gp = &term.line[term.c.y][term.c.x];
+ }
+
+ tsetchar(u, &term.c.attr, term.c.x, term.c.y);
+ term.lastc = u;
+
+ if (width == 2) {
+ gp->mode |= ATTR_WIDE;
+ if (term.c.x+1 < term.col) {
+ if (gp[1].mode == ATTR_WIDE && term.c.x+2 < term.col) {
+ gp[2].u = ' ';
+ gp[2].mode &= ~ATTR_WDUMMY;
+ }
+ gp[1].u = '\0';
+ gp[1].mode = ATTR_WDUMMY;
+ }
+ }
+ if (term.c.x+width < term.col) {
+ tmoveto(term.c.x+width, term.c.y);
+ } else {
+ term.c.state |= CURSOR_WRAPNEXT;
+ }
+}
+
+int
+twrite(const char *buf, int buflen, int show_ctrl)
+{
+ int charsize;
+ Rune u;
+ int n;
+
+ for (n = 0; n < buflen; n += charsize) {
+ if (IS_SET(MODE_UTF8)) {
+ /* process a complete utf8 char */
+ charsize = utf8decode(buf + n, &u, buflen - n);
+ if (charsize == 0)
+ break;
+ } else {
+ u = buf[n] & 0xFF;
+ charsize = 1;
+ }
+ if (show_ctrl && ISCONTROL(u)) {
+ if (u & 0x80) {
+ u &= 0x7f;
+ tputc('^');
+ tputc('[');
+ } else if (u != '\n' && u != '\r' && u != '\t') {
+ u ^= 0x40;
+ tputc('^');
+ }
+ }
+ tputc(u);
+ }
+ return n;
+}
+
+void
+tresize(int col, int row)
+{
+ int i, j;
+ int minrow = MIN(row, term.row);
+ int mincol = MIN(col, term.col);
+ int *bp;
+ TCursor c;
+
+ if (col < 1 || row < 1) {
+ fprintf(stderr,
+ "tresize: error resizing to %dx%d\n", col, row);
+ return;
+ }
+
+ /*
+ * slide screen to keep cursor where we expect it -
+ * tscrollup would work here, but we can optimize to
+ * memmove because we're freeing the earlier lines
+ */
+ for (i = 0; i <= term.c.y - row; i++) {
+ free(term.line[i]);
+ free(term.alt[i]);
+ }
+ /* ensure that both src and dst are not NULL */
+ if (i > 0) {
+ memmove(term.line, term.line + i, row * sizeof(Line));
+ memmove(term.alt, term.alt + i, row * sizeof(Line));
+ }
+ for (i += row; i < term.row; i++) {
+ free(term.line[i]);
+ free(term.alt[i]);
+ }
+
+ /* resize to new height */
+ term.line = xrealloc(term.line, row * sizeof(Line));
+ term.alt = xrealloc(term.alt, row * sizeof(Line));
+ term.dirty = xrealloc(term.dirty, row * sizeof(*term.dirty));
+ term.tabs = xrealloc(term.tabs, col * sizeof(*term.tabs));
+
+ for (i = 0; i < HISTSIZE; i++) {
+ term.hist[i] = xrealloc(term.hist[i], col * sizeof(Glyph));
+ for (j = mincol; j < col; j++) {
+ term.hist[i][j] = term.c.attr;
+ term.hist[i][j].u = ' ';
+ }
+ }
+
+ /* resize each row to new width, zero-pad if needed */
+ for (i = 0; i < minrow; i++) {
+ term.line[i] = xrealloc(term.line[i], col * sizeof(Glyph));
+ term.alt[i] = xrealloc(term.alt[i], col * sizeof(Glyph));
+ }
+
+ /* allocate any new rows */
+ for (/* i = minrow */; i < row; i++) {
+ term.line[i] = xmalloc(col * sizeof(Glyph));
+ term.alt[i] = xmalloc(col * sizeof(Glyph));
+ }
+ if (col > term.col) {
+ bp = term.tabs + term.col;
+
+ memset(bp, 0, sizeof(*term.tabs) * (col - term.col));
+ while (--bp > term.tabs && !*bp)
+ /* nothing */ ;
+ for (bp += tabspaces; bp < term.tabs + col; bp += tabspaces)
+ *bp = 1;
+ }
+ /* update terminal size */
+ term.col = col;
+ term.row = row;
+ /* reset scrolling region */
+ tsetscroll(0, row-1);
+ /* make use of the LIMIT in tmoveto */
+ tmoveto(term.c.x, term.c.y);
+ /* Clearing both screens (it makes dirty all lines) */
+ c = term.c;
+ for (i = 0; i < 2; i++) {
+ if (mincol < col && 0 < minrow) {
+ tclearregion(mincol, 0, col - 1, minrow - 1);
+ }
+ if (0 < col && minrow < row) {
+ tclearregion(0, minrow, col - 1, row - 1);
+ }
+ tswapscreen();
+ tcursor(CURSOR_LOAD);
+ }
+ term.c = c;
+}
+
+void
+resettitle(void)
+{
+ xsettitle(NULL);
+}
+
+void
+drawregion(int x1, int y1, int x2, int y2)
+{
+ int y;
+
+ xstartimagedraw(term.dirty, term.row);
+
+ for (y = y1; y < y2; y++) {
+ if (!term.dirty[y])
+ continue;
+
+ term.dirty[y] = 0;
+ xdrawline(TLINE(y), x1, y, x2);
+ }
+
+ xfinishimagedraw();
+}
+
+void
+draw(void)
+{
+ int cx = term.c.x, ocx = term.ocx, ocy = term.ocy;
+
+ if (!xstartdraw())
+ return;
+
+ /* adjust cursor position */
+ LIMIT(term.ocx, 0, term.col-1);
+ LIMIT(term.ocy, 0, term.row-1);
+ if (term.line[term.ocy][term.ocx].mode & ATTR_WDUMMY)
+ term.ocx--;
+ if (term.line[term.c.y][cx].mode & ATTR_WDUMMY)
+ cx--;
+
+ drawregion(0, 0, term.col, term.row);
+ if (term.scr == 0)
+ xdrawcursor(cx, term.c.y, term.line[term.c.y][cx],
+ term.ocx, term.ocy, term.line[term.ocy][term.ocx]);
+ term.ocx = cx;
+ term.ocy = term.c.y;
+ xfinishdraw();
+ if (ocx != term.ocx || ocy != term.ocy)
+ xximspot(term.ocx, term.ocy);
+}
+
+void
+redraw(void)
+{
+ tfulldirt();
+ draw();
+}
+
+Glyph
+getglyphat(int col, int row)
+{
+ return term.line[row][col];
+}
diff --git a/st/st.c.orig b/st/st.c.orig
@@ -0,0 +1,2741 @@
+/* See LICENSE for license details. */
+#include <ctype.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <pwd.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <signal.h>
+#include <sys/ioctl.h>
+#include <sys/select.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <termios.h>
+#include <unistd.h>
+#include <wchar.h>
+
+#include "st.h"
+#include "win.h"
+
+#if defined(__linux)
+ #include <pty.h>
+#elif defined(__OpenBSD__) || defined(__NetBSD__) || defined(__APPLE__)
+ #include <util.h>
+#elif defined(__FreeBSD__) || defined(__DragonFly__)
+ #include <libutil.h>
+#endif
+
+/* Arbitrary sizes */
+#define UTF_INVALID 0xFFFD
+#define UTF_SIZ 4
+#define ESC_BUF_SIZ (128*UTF_SIZ)
+#define ESC_ARG_SIZ 16
+#define STR_BUF_SIZ ESC_BUF_SIZ
+#define STR_ARG_SIZ ESC_ARG_SIZ
+#define HISTSIZE 2000
+
+/* macros */
+#define IS_SET(flag) ((term.mode & (flag)) != 0)
+#define ISCONTROLC0(c) (BETWEEN(c, 0, 0x1f) || (c) == 0x7f)
+#define ISCONTROLC1(c) (BETWEEN(c, 0x80, 0x9f))
+#define ISCONTROL(c) (ISCONTROLC0(c) || ISCONTROLC1(c))
+#define ISDELIM(u) (u && wcschr(worddelimiters, u))
+#define TLINE(y) ((y) < term.scr ? term.hist[((y) + term.histi - \
+ term.scr + HISTSIZE + 1) % HISTSIZE] : \
+ term.line[(y) - term.scr])
+
+enum term_mode {
+ MODE_WRAP = 1 << 0,
+ MODE_INSERT = 1 << 1,
+ MODE_ALTSCREEN = 1 << 2,
+ MODE_CRLF = 1 << 3,
+ MODE_ECHO = 1 << 4,
+ MODE_PRINT = 1 << 5,
+ MODE_UTF8 = 1 << 6,
+};
+
+enum cursor_movement {
+ CURSOR_SAVE,
+ CURSOR_LOAD
+};
+
+enum cursor_state {
+ CURSOR_DEFAULT = 0,
+ CURSOR_WRAPNEXT = 1,
+ CURSOR_ORIGIN = 2
+};
+
+enum charset {
+ CS_GRAPHIC0,
+ CS_GRAPHIC1,
+ CS_UK,
+ CS_USA,
+ CS_MULTI,
+ CS_GER,
+ CS_FIN
+};
+
+enum escape_state {
+ ESC_START = 1,
+ ESC_CSI = 2,
+ ESC_STR = 4, /* DCS, OSC, PM, APC */
+ ESC_ALTCHARSET = 8,
+ ESC_STR_END = 16, /* a final string was encountered */
+ ESC_TEST = 32, /* Enter in test mode */
+ ESC_UTF8 = 64,
+};
+
+typedef struct {
+ Glyph attr; /* current char attributes */
+ int x;
+ int y;
+ char state;
+} TCursor;
+
+typedef struct {
+ int mode;
+ int type;
+ int snap;
+ /*
+ * Selection variables:
+ * nb – normalized coordinates of the beginning of the selection
+ * ne – normalized coordinates of the end of the selection
+ * ob – original coordinates of the beginning of the selection
+ * oe – original coordinates of the end of the selection
+ */
+ struct {
+ int x, y;
+ } nb, ne, ob, oe;
+
+ int alt;
+} Selection;
+
+/* Internal representation of the screen */
+typedef struct {
+ int row; /* nb row */
+ int col; /* nb col */
+ Line *line; /* screen */
+ Line *alt; /* alternate screen */
+ Line hist[HISTSIZE]; /* history buffer */
+ int histi; /* history index */
+ int scr; /* scroll back */
+ int *dirty; /* dirtyness of lines */
+ TCursor c; /* cursor */
+ int ocx; /* old cursor col */
+ int ocy; /* old cursor row */
+ int top; /* top scroll limit */
+ int bot; /* bottom scroll limit */
+ int mode; /* terminal mode flags */
+ int esc; /* escape state flags */
+ char trantbl[4]; /* charset table translation */
+ int charset; /* current charset */
+ int icharset; /* selected charset for sequence */
+ int *tabs;
+ Rune lastc; /* last printed char outside of sequence, 0 if control */
+} Term;
+
+/* CSI Escape sequence structs */
+/* ESC '[' [[ [<priv>] <arg> [;]] <mode> [<mode>]] */
+typedef struct {
+ char buf[ESC_BUF_SIZ]; /* raw string */
+ size_t len; /* raw string length */
+ char priv;
+ int arg[ESC_ARG_SIZ];
+ int narg; /* nb of args */
+ char mode[2];
+} CSIEscape;
+
+/* STR Escape sequence structs */
+/* ESC type [[ [<priv>] <arg> [;]] <mode>] ESC '\' */
+typedef struct {
+ char type; /* ESC type ... */
+ char *buf; /* allocated raw string */
+ size_t siz; /* allocation size */
+ size_t len; /* raw string length */
+ char *args[STR_ARG_SIZ];
+ int narg; /* nb of args */
+} STREscape;
+
+static void execsh(char *, char **);
+static void stty(char **);
+static void sigchld(int);
+static void ttywriteraw(const char *, size_t);
+
+static void csidump(void);
+static void csihandle(void);
+static void csiparse(void);
+static void csireset(void);
+static void osc_color_response(int, int, int);
+static int eschandle(uchar);
+static void strdump(void);
+static void strhandle(void);
+static void strparse(void);
+static void strreset(void);
+
+static void tprinter(char *, size_t);
+static void tdumpsel(void);
+static void tdumpline(int);
+static void tdump(void);
+static void tclearregion(int, int, int, int);
+static void tcursor(int);
+static void tdeletechar(int);
+static void tdeleteline(int);
+static void tinsertblank(int);
+static void tinsertblankline(int);
+static int tlinelen(int);
+static void tmoveto(int, int);
+static void tmoveato(int, int);
+static void tnewline(int);
+static void tputtab(int);
+static void tputc(Rune);
+static void treset(void);
+static void tscrollup(int, int, int);
+static void tscrolldown(int, int, int);
+static void tsetattr(const int *, int);
+static void tsetchar(Rune, const Glyph *, int, int);
+static void tsetdirt(int, int);
+static void tsetscroll(int, int);
+static void tswapscreen(void);
+static void tsetmode(int, int, const int *, int);
+static int twrite(const char *, int, int);
+static void tfulldirt(void);
+static void tcontrolcode(uchar );
+static void tdectest(char );
+static void tdefutf8(char);
+static int32_t tdefcolor(const int *, int *, int);
+static void tdeftran(char);
+static void tstrsequence(uchar);
+
+static void drawregion(int, int, int, int);
+
+static void selnormalize(void);
+static void selscroll(int, int);
+static void selsnap(int *, int *, int);
+
+static size_t utf8decode(const char *, Rune *, size_t);
+static Rune utf8decodebyte(char, size_t *);
+static char utf8encodebyte(Rune, size_t);
+static size_t utf8validate(Rune *, size_t);
+
+static char *base64dec(const char *);
+static char base64dec_getc(const char **);
+
+static ssize_t xwrite(int, const char *, size_t);
+
+/* Globals */
+static Term term;
+static Selection sel;
+static CSIEscape csiescseq;
+static STREscape strescseq;
+static int iofd = 1;
+static int cmdfd;
+static pid_t pid;
+
+static const uchar utfbyte[UTF_SIZ + 1] = {0x80, 0, 0xC0, 0xE0, 0xF0};
+static const uchar utfmask[UTF_SIZ + 1] = {0xC0, 0x80, 0xE0, 0xF0, 0xF8};
+static const Rune utfmin[UTF_SIZ + 1] = { 0, 0, 0x80, 0x800, 0x10000};
+static const Rune utfmax[UTF_SIZ + 1] = {0x10FFFF, 0x7F, 0x7FF, 0xFFFF, 0x10FFFF};
+
+ssize_t
+xwrite(int fd, const char *s, size_t len)
+{
+ size_t aux = len;
+ ssize_t r;
+
+ while (len > 0) {
+ r = write(fd, s, len);
+ if (r < 0)
+ return r;
+ len -= r;
+ s += r;
+ }
+
+ return aux;
+}
+
+void *
+xmalloc(size_t len)
+{
+ void *p;
+
+ if (!(p = malloc(len)))
+ die("malloc: %s\n", strerror(errno));
+
+ return p;
+}
+
+void *
+xrealloc(void *p, size_t len)
+{
+ if ((p = realloc(p, len)) == NULL)
+ die("realloc: %s\n", strerror(errno));
+
+ return p;
+}
+
+char *
+xstrdup(const char *s)
+{
+ char *p;
+
+ if ((p = strdup(s)) == NULL)
+ die("strdup: %s\n", strerror(errno));
+
+ return p;
+}
+
+size_t
+utf8decode(const char *c, Rune *u, size_t clen)
+{
+ size_t i, j, len, type;
+ Rune udecoded;
+
+ *u = UTF_INVALID;
+ if (!clen)
+ return 0;
+ udecoded = utf8decodebyte(c[0], &len);
+ if (!BETWEEN(len, 1, UTF_SIZ))
+ return 1;
+ for (i = 1, j = 1; i < clen && j < len; ++i, ++j) {
+ udecoded = (udecoded << 6) | utf8decodebyte(c[i], &type);
+ if (type != 0)
+ return j;
+ }
+ if (j < len)
+ return 0;
+ *u = udecoded;
+ utf8validate(u, len);
+
+ return len;
+}
+
+Rune
+utf8decodebyte(char c, size_t *i)
+{
+ for (*i = 0; *i < LEN(utfmask); ++(*i))
+ if (((uchar)c & utfmask[*i]) == utfbyte[*i])
+ return (uchar)c & ~utfmask[*i];
+
+ return 0;
+}
+
+size_t
+utf8encode(Rune u, char *c)
+{
+ size_t len, i;
+
+ len = utf8validate(&u, 0);
+ if (len > UTF_SIZ)
+ return 0;
+
+ for (i = len - 1; i != 0; --i) {
+ c[i] = utf8encodebyte(u, 0);
+ u >>= 6;
+ }
+ c[0] = utf8encodebyte(u, len);
+
+ return len;
+}
+
+char
+utf8encodebyte(Rune u, size_t i)
+{
+ return utfbyte[i] | (u & ~utfmask[i]);
+}
+
+size_t
+utf8validate(Rune *u, size_t i)
+{
+ if (!BETWEEN(*u, utfmin[i], utfmax[i]) || BETWEEN(*u, 0xD800, 0xDFFF))
+ *u = UTF_INVALID;
+ for (i = 1; *u > utfmax[i]; ++i)
+ ;
+
+ return i;
+}
+
+char
+base64dec_getc(const char **src)
+{
+ while (**src && !isprint((unsigned char)**src))
+ (*src)++;
+ return **src ? *((*src)++) : '='; /* emulate padding if string ends */
+}
+
+char *
+base64dec(const char *src)
+{
+ size_t in_len = strlen(src);
+ char *result, *dst;
+ static const char base64_digits[256] = {
+ [43] = 62, 0, 0, 0, 63, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61,
+ 0, 0, 0, -1, 0, 0, 0, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12,
+ 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 0, 0, 0, 0,
+ 0, 0, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39,
+ 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51
+ };
+
+ if (in_len % 4)
+ in_len += 4 - (in_len % 4);
+ result = dst = xmalloc(in_len / 4 * 3 + 1);
+ while (*src) {
+ int a = base64_digits[(unsigned char) base64dec_getc(&src)];
+ int b = base64_digits[(unsigned char) base64dec_getc(&src)];
+ int c = base64_digits[(unsigned char) base64dec_getc(&src)];
+ int d = base64_digits[(unsigned char) base64dec_getc(&src)];
+
+ /* invalid input. 'a' can be -1, e.g. if src is "\n" (c-str) */
+ if (a == -1 || b == -1)
+ break;
+
+ *dst++ = (a << 2) | ((b & 0x30) >> 4);
+ if (c == -1)
+ break;
+ *dst++ = ((b & 0x0f) << 4) | ((c & 0x3c) >> 2);
+ if (d == -1)
+ break;
+ *dst++ = ((c & 0x03) << 6) | d;
+ }
+ *dst = '\0';
+ return result;
+}
+
+void
+selinit(void)
+{
+ sel.mode = SEL_IDLE;
+ sel.snap = 0;
+ sel.ob.x = -1;
+}
+
+int
+tlinelen(int y)
+{
+ int i = term.col;
+
+ if (TLINE(y)[i - 1].mode & ATTR_WRAP)
+ return i;
+
+ while (i > 0 && TLINE(y)[i - 1].u == ' ')
+ --i;
+
+ return i;
+}
+
+void
+selstart(int col, int row, int snap)
+{
+ selclear();
+ sel.mode = SEL_EMPTY;
+ sel.type = SEL_REGULAR;
+ sel.alt = IS_SET(MODE_ALTSCREEN);
+ sel.snap = snap;
+ sel.oe.x = sel.ob.x = col;
+ sel.oe.y = sel.ob.y = row;
+ selnormalize();
+
+ if (sel.snap != 0)
+ sel.mode = SEL_READY;
+ tsetdirt(sel.nb.y, sel.ne.y);
+}
+
+void
+selextend(int col, int row, int type, int done)
+{
+ int oldey, oldex, oldsby, oldsey, oldtype;
+
+ if (sel.mode == SEL_IDLE)
+ return;
+ if (done && sel.mode == SEL_EMPTY) {
+ selclear();
+ return;
+ }
+
+ oldey = sel.oe.y;
+ oldex = sel.oe.x;
+ oldsby = sel.nb.y;
+ oldsey = sel.ne.y;
+ oldtype = sel.type;
+
+ sel.oe.x = col;
+ sel.oe.y = row;
+ selnormalize();
+ sel.type = type;
+
+ if (oldey != sel.oe.y || oldex != sel.oe.x || oldtype != sel.type || sel.mode == SEL_EMPTY)
+ tsetdirt(MIN(sel.nb.y, oldsby), MAX(sel.ne.y, oldsey));
+
+ sel.mode = done ? SEL_IDLE : SEL_READY;
+}
+
+void
+selnormalize(void)
+{
+ int i;
+
+ if (sel.type == SEL_REGULAR && sel.ob.y != sel.oe.y) {
+ sel.nb.x = sel.ob.y < sel.oe.y ? sel.ob.x : sel.oe.x;
+ sel.ne.x = sel.ob.y < sel.oe.y ? sel.oe.x : sel.ob.x;
+ } else {
+ sel.nb.x = MIN(sel.ob.x, sel.oe.x);
+ sel.ne.x = MAX(sel.ob.x, sel.oe.x);
+ }
+ sel.nb.y = MIN(sel.ob.y, sel.oe.y);
+ sel.ne.y = MAX(sel.ob.y, sel.oe.y);
+
+ selsnap(&sel.nb.x, &sel.nb.y, -1);
+ selsnap(&sel.ne.x, &sel.ne.y, +1);
+
+ /* expand selection over line breaks */
+ if (sel.type == SEL_RECTANGULAR)
+ return;
+ i = tlinelen(sel.nb.y);
+ if (i < sel.nb.x)
+ sel.nb.x = i;
+ if (tlinelen(sel.ne.y) <= sel.ne.x)
+ sel.ne.x = term.col - 1;
+}
+
+int
+selected(int x, int y)
+{
+ if (sel.mode == SEL_EMPTY || sel.ob.x == -1 ||
+ sel.alt != IS_SET(MODE_ALTSCREEN))
+ return 0;
+
+ if (sel.type == SEL_RECTANGULAR)
+ return BETWEEN(y, sel.nb.y, sel.ne.y)
+ && BETWEEN(x, sel.nb.x, sel.ne.x);
+
+ return BETWEEN(y, sel.nb.y, sel.ne.y)
+ && (y != sel.nb.y || x >= sel.nb.x)
+ && (y != sel.ne.y || x <= sel.ne.x);
+}
+
+void
+selsnap(int *x, int *y, int direction)
+{
+ int newx, newy, xt, yt;
+ int delim, prevdelim;
+ const Glyph *gp, *prevgp;
+
+ switch (sel.snap) {
+ case SNAP_WORD:
+ /*
+ * Snap around if the word wraps around at the end or
+ * beginning of a line.
+ */
+ prevgp = &TLINE(*y)[*x];
+ prevdelim = ISDELIM(prevgp->u);
+ for (;;) {
+ newx = *x + direction;
+ newy = *y;
+ if (!BETWEEN(newx, 0, term.col - 1)) {
+ newy += direction;
+ newx = (newx + term.col) % term.col;
+ if (!BETWEEN(newy, 0, term.row - 1))
+ break;
+
+ if (direction > 0)
+ yt = *y, xt = *x;
+ else
+ yt = newy, xt = newx;
+ if (!(TLINE(yt)[xt].mode & ATTR_WRAP))
+ break;
+ }
+
+ if (newx >= tlinelen(newy))
+ break;
+
+ gp = &TLINE(newy)[newx];
+ delim = ISDELIM(gp->u);
+ if (!(gp->mode & ATTR_WDUMMY) && (delim != prevdelim
+ || (delim && gp->u != prevgp->u)))
+ break;
+
+ *x = newx;
+ *y = newy;
+ prevgp = gp;
+ prevdelim = delim;
+ }
+ break;
+ case SNAP_LINE:
+ /*
+ * Snap around if the the previous line or the current one
+ * has set ATTR_WRAP at its end. Then the whole next or
+ * previous line will be selected.
+ */
+ *x = (direction < 0) ? 0 : term.col - 1;
+ if (direction < 0) {
+ for (; *y > 0; *y += direction) {
+ if (!(TLINE(*y-1)[term.col-1].mode
+ & ATTR_WRAP)) {
+ break;
+ }
+ }
+ } else if (direction > 0) {
+ for (; *y < term.row-1; *y += direction) {
+ if (!(TLINE(*y)[term.col-1].mode
+ & ATTR_WRAP)) {
+ break;
+ }
+ }
+ }
+ break;
+ }
+}
+
+char *
+getsel(void)
+{
+ char *str, *ptr;
+ int y, bufsize, lastx, linelen;
+ const Glyph *gp, *last;
+
+ if (sel.ob.x == -1)
+ return NULL;
+
+ bufsize = (term.col+1) * (sel.ne.y-sel.nb.y+1) * UTF_SIZ;
+ ptr = str = xmalloc(bufsize);
+
+ /* append every set & selected glyph to the selection */
+ for (y = sel.nb.y; y <= sel.ne.y; y++) {
+ if ((linelen = tlinelen(y)) == 0) {
+ *ptr++ = '\n';
+ continue;
+ }
+
+ if (sel.type == SEL_RECTANGULAR) {
+ gp = &TLINE(y)[sel.nb.x];
+ lastx = sel.ne.x;
+ } else {
+ gp = &TLINE(y)[sel.nb.y == y ? sel.nb.x : 0];
+ lastx = (sel.ne.y == y) ? sel.ne.x : term.col-1;
+ }
+ last = &TLINE(y)[MIN(lastx, linelen-1)];
+ while (last >= gp && last->u == ' ')
+ --last;
+
+ for ( ; gp <= last; ++gp) {
+ if (gp->mode & ATTR_WDUMMY)
+ continue;
+
+ ptr += utf8encode(gp->u, ptr);
+ }
+
+ /*
+ * Copy and pasting of line endings is inconsistent
+ * in the inconsistent terminal and GUI world.
+ * The best solution seems like to produce '\n' when
+ * something is copied from st and convert '\n' to
+ * '\r', when something to be pasted is received by
+ * st.
+ * FIXME: Fix the computer world.
+ */
+ if ((y < sel.ne.y || lastx >= linelen) &&
+ (!(last->mode & ATTR_WRAP) || sel.type == SEL_RECTANGULAR))
+ *ptr++ = '\n';
+ }
+ *ptr = 0;
+ return str;
+}
+
+void
+selclear(void)
+{
+ if (sel.ob.x == -1)
+ return;
+ sel.mode = SEL_IDLE;
+ sel.ob.x = -1;
+ tsetdirt(sel.nb.y, sel.ne.y);
+}
+
+void
+die(const char *errstr, ...)
+{
+ va_list ap;
+
+ va_start(ap, errstr);
+ vfprintf(stderr, errstr, ap);
+ va_end(ap);
+ exit(1);
+}
+
+void
+execsh(char *cmd, char **args)
+{
+ char *sh, *prog, *arg;
+ const struct passwd *pw;
+
+ errno = 0;
+ if ((pw = getpwuid(getuid())) == NULL) {
+ if (errno)
+ die("getpwuid: %s\n", strerror(errno));
+ else
+ die("who are you?\n");
+ }
+
+ if ((sh = getenv("SHELL")) == NULL)
+ sh = (pw->pw_shell[0]) ? pw->pw_shell : cmd;
+
+ if (args) {
+ prog = args[0];
+ arg = NULL;
+ } else if (scroll) {
+ prog = scroll;
+ arg = utmp ? utmp : sh;
+ } else if (utmp) {
+ prog = utmp;
+ arg = NULL;
+ } else {
+ prog = sh;
+ arg = NULL;
+ }
+ DEFAULT(args, ((char *[]) {prog, arg, NULL}));
+
+ unsetenv("COLUMNS");
+ unsetenv("LINES");
+ unsetenv("TERMCAP");
+ setenv("LOGNAME", pw->pw_name, 1);
+ setenv("USER", pw->pw_name, 1);
+ setenv("SHELL", sh, 1);
+ setenv("HOME", pw->pw_dir, 1);
+ setenv("TERM", termname, 1);
+
+ signal(SIGCHLD, SIG_DFL);
+ signal(SIGHUP, SIG_DFL);
+ signal(SIGINT, SIG_DFL);
+ signal(SIGQUIT, SIG_DFL);
+ signal(SIGTERM, SIG_DFL);
+ signal(SIGALRM, SIG_DFL);
+
+ execvp(prog, args);
+ _exit(1);
+}
+
+void
+sigchld(int a)
+{
+ int stat;
+ pid_t p;
+
+ if ((p = waitpid(pid, &stat, WNOHANG)) < 0)
+ die("waiting for pid %hd failed: %s\n", pid, strerror(errno));
+
+ if (pid != p)
+ return;
+
+ if (WIFEXITED(stat) && WEXITSTATUS(stat))
+ die("child exited with status %d\n", WEXITSTATUS(stat));
+ else if (WIFSIGNALED(stat))
+ die("child terminated due to signal %d\n", WTERMSIG(stat));
+ _exit(0);
+}
+
+void
+stty(char **args)
+{
+ char cmd[_POSIX_ARG_MAX], **p, *q, *s;
+ size_t n, siz;
+
+ if ((n = strlen(stty_args)) > sizeof(cmd)-1)
+ die("incorrect stty parameters\n");
+ memcpy(cmd, stty_args, n);
+ q = cmd + n;
+ siz = sizeof(cmd) - n;
+ for (p = args; p && (s = *p); ++p) {
+ if ((n = strlen(s)) > siz-1)
+ die("stty parameter length too long\n");
+ *q++ = ' ';
+ memcpy(q, s, n);
+ q += n;
+ siz -= n + 1;
+ }
+ *q = '\0';
+ if (system(cmd) != 0)
+ perror("Couldn't call stty");
+}
+
+int
+ttynew(const char *line, char *cmd, const char *out, char **args)
+{
+ int m, s;
+
+ if (out) {
+ term.mode |= MODE_PRINT;
+ iofd = (!strcmp(out, "-")) ?
+ 1 : open(out, O_WRONLY | O_CREAT, 0666);
+ if (iofd < 0) {
+ fprintf(stderr, "Error opening %s:%s\n",
+ out, strerror(errno));
+ }
+ }
+
+ if (line) {
+ if ((cmdfd = open(line, O_RDWR)) < 0)
+ die("open line '%s' failed: %s\n",
+ line, strerror(errno));
+ dup2(cmdfd, 0);
+ stty(args);
+ return cmdfd;
+ }
+
+ /* seems to work fine on linux, openbsd and freebsd */
+ if (openpty(&m, &s, NULL, NULL, NULL) < 0)
+ die("openpty failed: %s\n", strerror(errno));
+
+ switch (pid = fork()) {
+ case -1:
+ die("fork failed: %s\n", strerror(errno));
+ break;
+ case 0:
+ close(iofd);
+ close(m);
+ setsid(); /* create a new process group */
+ dup2(s, 0);
+ dup2(s, 1);
+ dup2(s, 2);
+ if (ioctl(s, TIOCSCTTY, NULL) < 0)
+ die("ioctl TIOCSCTTY failed: %s\n", strerror(errno));
+ if (s > 2)
+ close(s);
+#ifdef __OpenBSD__
+ if (pledge("stdio getpw proc exec", NULL) == -1)
+ die("pledge\n");
+#endif
+ execsh(cmd, args);
+ break;
+ default:
+#ifdef __OpenBSD__
+ if (pledge("stdio rpath tty proc", NULL) == -1)
+ die("pledge\n");
+#endif
+ close(s);
+ cmdfd = m;
+ signal(SIGCHLD, sigchld);
+ break;
+ }
+ return cmdfd;
+}
+
+size_t
+ttyread(void)
+{
+ static char buf[BUFSIZ];
+ static int buflen = 0;
+ int ret, written;
+
+ /* append read bytes to unprocessed bytes */
+ ret = read(cmdfd, buf+buflen, LEN(buf)-buflen);
+
+ switch (ret) {
+ case 0:
+ exit(0);
+ case -1:
+ die("couldn't read from shell: %s\n", strerror(errno));
+ default:
+ buflen += ret;
+ written = twrite(buf, buflen, 0);
+ buflen -= written;
+ /* keep any incomplete UTF-8 byte sequence for the next call */
+ if (buflen > 0)
+ memmove(buf, buf + written, buflen);
+ return ret;
+ }
+}
+
+void
+ttywrite(const char *s, size_t n, int may_echo)
+{
+ const char *next;
+ Arg arg = (Arg) { .i = term.scr };
+
+ kscrolldown(&arg);
+
+ if (may_echo && IS_SET(MODE_ECHO))
+ twrite(s, n, 1);
+
+ if (!IS_SET(MODE_CRLF)) {
+ ttywriteraw(s, n);
+ return;
+ }
+
+ /* This is similar to how the kernel handles ONLCR for ttys */
+ while (n > 0) {
+ if (*s == '\r') {
+ next = s + 1;
+ ttywriteraw("\r\n", 2);
+ } else {
+ next = memchr(s, '\r', n);
+ DEFAULT(next, s + n);
+ ttywriteraw(s, next - s);
+ }
+ n -= next - s;
+ s = next;
+ }
+}
+
+void
+ttywriteraw(const char *s, size_t n)
+{
+ fd_set wfd, rfd;
+ ssize_t r;
+ size_t lim = 256;
+
+ /*
+ * Remember that we are using a pty, which might be a modem line.
+ * Writing too much will clog the line. That's why we are doing this
+ * dance.
+ * FIXME: Migrate the world to Plan 9.
+ */
+ while (n > 0) {
+ FD_ZERO(&wfd);
+ FD_ZERO(&rfd);
+ FD_SET(cmdfd, &wfd);
+ FD_SET(cmdfd, &rfd);
+
+ /* Check if we can write. */
+ if (pselect(cmdfd+1, &rfd, &wfd, NULL, NULL, NULL) < 0) {
+ if (errno == EINTR)
+ continue;
+ die("select failed: %s\n", strerror(errno));
+ }
+ if (FD_ISSET(cmdfd, &wfd)) {
+ /*
+ * Only write the bytes written by ttywrite() or the
+ * default of 256. This seems to be a reasonable value
+ * for a serial line. Bigger values might clog the I/O.
+ */
+ if ((r = write(cmdfd, s, (n < lim)? n : lim)) < 0)
+ goto write_error;
+ if (r < n) {
+ /*
+ * We weren't able to write out everything.
+ * This means the buffer is getting full
+ * again. Empty it.
+ */
+ if (n < lim)
+ lim = ttyread();
+ n -= r;
+ s += r;
+ } else {
+ /* All bytes have been written. */
+ break;
+ }
+ }
+ if (FD_ISSET(cmdfd, &rfd))
+ lim = ttyread();
+ }
+ return;
+
+write_error:
+ die("write error on tty: %s\n", strerror(errno));
+}
+
+void
+ttyresize(int tw, int th)
+{
+ struct winsize w;
+
+ w.ws_row = term.row;
+ w.ws_col = term.col;
+ w.ws_xpixel = tw;
+ w.ws_ypixel = th;
+ if (ioctl(cmdfd, TIOCSWINSZ, &w) < 0)
+ fprintf(stderr, "Couldn't set window size: %s\n", strerror(errno));
+}
+
+void
+ttyhangup(void)
+{
+ /* Send SIGHUP to shell */
+ kill(pid, SIGHUP);
+}
+
+int
+tattrset(int attr)
+{
+ int i, j;
+
+ for (i = 0; i < term.row-1; i++) {
+ for (j = 0; j < term.col-1; j++) {
+ if (term.line[i][j].mode & attr)
+ return 1;
+ }
+ }
+
+ return 0;
+}
+
+void
+tsetdirt(int top, int bot)
+{
+ int i;
+
+ LIMIT(top, 0, term.row-1);
+ LIMIT(bot, 0, term.row-1);
+
+ for (i = top; i <= bot; i++)
+ term.dirty[i] = 1;
+}
+
+void
+tsetdirtattr(int attr)
+{
+ int i, j;
+
+ for (i = 0; i < term.row-1; i++) {
+ for (j = 0; j < term.col-1; j++) {
+ if (term.line[i][j].mode & attr) {
+ tsetdirt(i, i);
+ break;
+ }
+ }
+ }
+}
+
+void
+tfulldirt(void)
+{
+ tsetdirt(0, term.row-1);
+}
+
+void
+tcursor(int mode)
+{
+ static TCursor c[2];
+ int alt = IS_SET(MODE_ALTSCREEN);
+
+ if (mode == CURSOR_SAVE) {
+ c[alt] = term.c;
+ } else if (mode == CURSOR_LOAD) {
+ term.c = c[alt];
+ tmoveto(c[alt].x, c[alt].y);
+ }
+}
+
+void
+treset(void)
+{
+ uint i;
+
+ term.c = (TCursor){{
+ .mode = ATTR_NULL,
+ .fg = defaultfg,
+ .bg = defaultbg
+ }, .x = 0, .y = 0, .state = CURSOR_DEFAULT};
+
+ memset(term.tabs, 0, term.col * sizeof(*term.tabs));
+ for (i = tabspaces; i < term.col; i += tabspaces)
+ term.tabs[i] = 1;
+ term.top = 0;
+ term.bot = term.row - 1;
+ term.mode = MODE_WRAP|MODE_UTF8;
+ memset(term.trantbl, CS_USA, sizeof(term.trantbl));
+ term.charset = 0;
+
+ for (i = 0; i < 2; i++) {
+ tmoveto(0, 0);
+ tcursor(CURSOR_SAVE);
+ tclearregion(0, 0, term.col-1, term.row-1);
+ tswapscreen();
+ }
+}
+
+void
+tnew(int col, int row)
+{
+ term = (Term){ .c = { .attr = { .fg = defaultfg, .bg = defaultbg } } };
+ tresize(col, row);
+ treset();
+}
+
+void
+tswapscreen(void)
+{
+ Line *tmp = term.line;
+
+ term.line = term.alt;
+ term.alt = tmp;
+ term.mode ^= MODE_ALTSCREEN;
+ tfulldirt();
+}
+
+void
+kscrolldown(const Arg* a)
+{
+ int n = a->i;
+
+ if (n < 0)
+ n = term.row + n;
+
+ if (n > term.scr)
+ n = term.scr;
+
+ if (term.scr > 0) {
+ term.scr -= n;
+ selscroll(0, -n);
+ tfulldirt();
+ }
+}
+
+void
+kscrollup(const Arg* a)
+{
+ int n = a->i;
+
+ if (n < 0)
+ n = term.row + n;
+
+ if (term.scr <= HISTSIZE-n) {
+ term.scr += n;
+ selscroll(0, n);
+ tfulldirt();
+ }
+}
+
+void
+tscrolldown(int orig, int n, int copyhist)
+{
+ int i;
+ Line temp;
+
+ LIMIT(n, 0, term.bot-orig+1);
+
+ if (copyhist) {
+ term.histi = (term.histi - 1 + HISTSIZE) % HISTSIZE;
+ temp = term.hist[term.histi];
+ term.hist[term.histi] = term.line[term.bot];
+ term.line[term.bot] = temp;
+ }
+
+ tsetdirt(orig, term.bot-n);
+ tclearregion(0, term.bot-n+1, term.col-1, term.bot);
+
+ for (i = term.bot; i >= orig+n; i--) {
+ temp = term.line[i];
+ term.line[i] = term.line[i-n];
+ term.line[i-n] = temp;
+ }
+
+ if (term.scr == 0)
+ selscroll(orig, n);
+}
+
+void
+tscrollup(int orig, int n, int copyhist)
+{
+ int i;
+ Line temp;
+
+ LIMIT(n, 0, term.bot-orig+1);
+
+ if (copyhist) {
+ term.histi = (term.histi + 1) % HISTSIZE;
+ temp = term.hist[term.histi];
+ term.hist[term.histi] = term.line[orig];
+ term.line[orig] = temp;
+ }
+
+ if (term.scr > 0 && term.scr < HISTSIZE)
+ term.scr = MIN(term.scr + n, HISTSIZE-1);
+
+ tclearregion(0, orig, term.col-1, orig+n-1);
+ tsetdirt(orig+n, term.bot);
+
+ for (i = orig; i <= term.bot-n; i++) {
+ temp = term.line[i];
+ term.line[i] = term.line[i+n];
+ term.line[i+n] = temp;
+ }
+
+ if (term.scr == 0)
+ selscroll(orig, -n);
+}
+
+void
+selscroll(int orig, int n)
+{
+ if (sel.ob.x == -1)
+ return;
+
+ if (BETWEEN(sel.nb.y, orig, term.bot) != BETWEEN(sel.ne.y, orig, term.bot)) {
+ selclear();
+ } else if (BETWEEN(sel.nb.y, orig, term.bot)) {
+ sel.ob.y += n;
+ sel.oe.y += n;
+ if (sel.ob.y < term.top || sel.ob.y > term.bot ||
+ sel.oe.y < term.top || sel.oe.y > term.bot) {
+ selclear();
+ } else {
+ selnormalize();
+ }
+ }
+}
+
+void
+tnewline(int first_col)
+{
+ int y = term.c.y;
+
+ if (y == term.bot) {
+ tscrollup(term.top, 1, 1);
+ } else {
+ y++;
+ }
+ tmoveto(first_col ? 0 : term.c.x, y);
+}
+
+void
+csiparse(void)
+{
+ char *p = csiescseq.buf, *np;
+ long int v;
+
+ csiescseq.narg = 0;
+ if (*p == '?') {
+ csiescseq.priv = 1;
+ p++;
+ }
+
+ csiescseq.buf[csiescseq.len] = '\0';
+ while (p < csiescseq.buf+csiescseq.len) {
+ np = NULL;
+ v = strtol(p, &np, 10);
+ if (np == p)
+ v = 0;
+ if (v == LONG_MAX || v == LONG_MIN)
+ v = -1;
+ csiescseq.arg[csiescseq.narg++] = v;
+ p = np;
+ if (*p != ';' || csiescseq.narg == ESC_ARG_SIZ)
+ break;
+ p++;
+ }
+ csiescseq.mode[0] = *p++;
+ csiescseq.mode[1] = (p < csiescseq.buf+csiescseq.len) ? *p : '\0';
+}
+
+/* for absolute user moves, when decom is set */
+void
+tmoveato(int x, int y)
+{
+ tmoveto(x, y + ((term.c.state & CURSOR_ORIGIN) ? term.top: 0));
+}
+
+void
+tmoveto(int x, int y)
+{
+ int miny, maxy;
+
+ if (term.c.state & CURSOR_ORIGIN) {
+ miny = term.top;
+ maxy = term.bot;
+ } else {
+ miny = 0;
+ maxy = term.row - 1;
+ }
+ term.c.state &= ~CURSOR_WRAPNEXT;
+ term.c.x = LIMIT(x, 0, term.col-1);
+ term.c.y = LIMIT(y, miny, maxy);
+}
+
+void
+tsetchar(Rune u, const Glyph *attr, int x, int y)
+{
+ static const char *vt100_0[62] = { /* 0x41 - 0x7e */
+ "↑", "↓", "→", "←", "█", "▚", "☃", /* A - G */
+ 0, 0, 0, 0, 0, 0, 0, 0, /* H - O */
+ 0, 0, 0, 0, 0, 0, 0, 0, /* P - W */
+ 0, 0, 0, 0, 0, 0, 0, " ", /* X - _ */
+ "◆", "▒", "␉", "␌", "␍", "␊", "°", "±", /* ` - g */
+ "", "␋", "┘", "┐", "┌", "└", "┼", "⎺", /* h - o */
+ "⎻", "─", "⎼", "⎽", "├", "┤", "┴", "┬", /* p - w */
+ "│", "≤", "≥", "π", "≠", "£", "·", /* x - ~ */
+ };
+
+ /*
+ * The table is proudly stolen from rxvt.
+ */
+ if (term.trantbl[term.charset] == CS_GRAPHIC0 &&
+ BETWEEN(u, 0x41, 0x7e) && vt100_0[u - 0x41])
+ utf8decode(vt100_0[u - 0x41], &u, UTF_SIZ);
+
+ if (term.line[y][x].mode & ATTR_WIDE) {
+ if (x+1 < term.col) {
+ term.line[y][x+1].u = ' ';
+ term.line[y][x+1].mode &= ~ATTR_WDUMMY;
+ }
+ } else if (term.line[y][x].mode & ATTR_WDUMMY) {
+ term.line[y][x-1].u = ' ';
+ term.line[y][x-1].mode &= ~ATTR_WIDE;
+ }
+
+ term.dirty[y] = 1;
+ term.line[y][x] = *attr;
+ term.line[y][x].u = u;
+}
+
+void
+tclearregion(int x1, int y1, int x2, int y2)
+{
+ int x, y, temp;
+ Glyph *gp;
+
+ if (x1 > x2)
+ temp = x1, x1 = x2, x2 = temp;
+ if (y1 > y2)
+ temp = y1, y1 = y2, y2 = temp;
+
+ LIMIT(x1, 0, term.col-1);
+ LIMIT(x2, 0, term.col-1);
+ LIMIT(y1, 0, term.row-1);
+ LIMIT(y2, 0, term.row-1);
+
+ for (y = y1; y <= y2; y++) {
+ term.dirty[y] = 1;
+ for (x = x1; x <= x2; x++) {
+ gp = &term.line[y][x];
+ if (selected(x, y))
+ selclear();
+ gp->fg = term.c.attr.fg;
+ gp->bg = term.c.attr.bg;
+ gp->mode = 0;
+ gp->u = ' ';
+ }
+ }
+}
+
+void
+tdeletechar(int n)
+{
+ int dst, src, size;
+ Glyph *line;
+
+ LIMIT(n, 0, term.col - term.c.x);
+
+ dst = term.c.x;
+ src = term.c.x + n;
+ size = term.col - src;
+ line = term.line[term.c.y];
+
+ memmove(&line[dst], &line[src], size * sizeof(Glyph));
+ tclearregion(term.col-n, term.c.y, term.col-1, term.c.y);
+}
+
+void
+tinsertblank(int n)
+{
+ int dst, src, size;
+ Glyph *line;
+
+ LIMIT(n, 0, term.col - term.c.x);
+
+ dst = term.c.x + n;
+ src = term.c.x;
+ size = term.col - dst;
+ line = term.line[term.c.y];
+
+ memmove(&line[dst], &line[src], size * sizeof(Glyph));
+ tclearregion(src, term.c.y, dst - 1, term.c.y);
+}
+
+void
+tinsertblankline(int n)
+{
+ if (BETWEEN(term.c.y, term.top, term.bot))
+ tscrolldown(term.c.y, n, 0);
+}
+
+void
+tdeleteline(int n)
+{
+ if (BETWEEN(term.c.y, term.top, term.bot))
+ tscrollup(term.c.y, n, 0);
+}
+
+int32_t
+tdefcolor(const int *attr, int *npar, int l)
+{
+ int32_t idx = -1;
+ uint r, g, b;
+
+ switch (attr[*npar + 1]) {
+ case 2: /* direct color in RGB space */
+ if (*npar + 4 >= l) {
+ fprintf(stderr,
+ "erresc(38): Incorrect number of parameters (%d)\n",
+ *npar);
+ break;
+ }
+ r = attr[*npar + 2];
+ g = attr[*npar + 3];
+ b = attr[*npar + 4];
+ *npar += 4;
+ if (!BETWEEN(r, 0, 255) || !BETWEEN(g, 0, 255) || !BETWEEN(b, 0, 255))
+ fprintf(stderr, "erresc: bad rgb color (%u,%u,%u)\n",
+ r, g, b);
+ else
+ idx = TRUECOLOR(r, g, b);
+ break;
+ case 5: /* indexed color */
+ if (*npar + 2 >= l) {
+ fprintf(stderr,
+ "erresc(38): Incorrect number of parameters (%d)\n",
+ *npar);
+ break;
+ }
+ *npar += 2;
+ if (!BETWEEN(attr[*npar], 0, 255))
+ fprintf(stderr, "erresc: bad fgcolor %d\n", attr[*npar]);
+ else
+ idx = attr[*npar];
+ break;
+ case 0: /* implemented defined (only foreground) */
+ case 1: /* transparent */
+ case 3: /* direct color in CMY space */
+ case 4: /* direct color in CMYK space */
+ default:
+ fprintf(stderr,
+ "erresc(38): gfx attr %d unknown\n", attr[*npar]);
+ break;
+ }
+
+ return idx;
+}
+
+void
+tsetattr(const int *attr, int l)
+{
+ int i;
+ int32_t idx;
+
+ for (i = 0; i < l; i++) {
+ switch (attr[i]) {
+ case 0:
+ term.c.attr.mode &= ~(
+ ATTR_BOLD |
+ ATTR_FAINT |
+ ATTR_ITALIC |
+ ATTR_UNDERLINE |
+ ATTR_BLINK |
+ ATTR_REVERSE |
+ ATTR_INVISIBLE |
+ ATTR_STRUCK );
+ term.c.attr.fg = defaultfg;
+ term.c.attr.bg = defaultbg;
+ break;
+ case 1:
+ term.c.attr.mode |= ATTR_BOLD;
+ break;
+ case 2:
+ term.c.attr.mode |= ATTR_FAINT;
+ break;
+ case 3:
+ term.c.attr.mode |= ATTR_ITALIC;
+ break;
+ case 4:
+ term.c.attr.mode |= ATTR_UNDERLINE;
+ break;
+ case 5: /* slow blink */
+ /* FALLTHROUGH */
+ case 6: /* rapid blink */
+ term.c.attr.mode |= ATTR_BLINK;
+ break;
+ case 7:
+ term.c.attr.mode |= ATTR_REVERSE;
+ break;
+ case 8:
+ term.c.attr.mode |= ATTR_INVISIBLE;
+ break;
+ case 9:
+ term.c.attr.mode |= ATTR_STRUCK;
+ break;
+ case 22:
+ term.c.attr.mode &= ~(ATTR_BOLD | ATTR_FAINT);
+ break;
+ case 23:
+ term.c.attr.mode &= ~ATTR_ITALIC;
+ break;
+ case 24:
+ term.c.attr.mode &= ~ATTR_UNDERLINE;
+ break;
+ case 25:
+ term.c.attr.mode &= ~ATTR_BLINK;
+ break;
+ case 27:
+ term.c.attr.mode &= ~ATTR_REVERSE;
+ break;
+ case 28:
+ term.c.attr.mode &= ~ATTR_INVISIBLE;
+ break;
+ case 29:
+ term.c.attr.mode &= ~ATTR_STRUCK;
+ break;
+ case 38:
+ if ((idx = tdefcolor(attr, &i, l)) >= 0)
+ term.c.attr.fg = idx;
+ break;
+ case 39:
+ term.c.attr.fg = defaultfg;
+ break;
+ case 48:
+ if ((idx = tdefcolor(attr, &i, l)) >= 0)
+ term.c.attr.bg = idx;
+ break;
+ case 49:
+ term.c.attr.bg = defaultbg;
+ break;
+ default:
+ if (BETWEEN(attr[i], 30, 37)) {
+ term.c.attr.fg = attr[i] - 30;
+ } else if (BETWEEN(attr[i], 40, 47)) {
+ term.c.attr.bg = attr[i] - 40;
+ } else if (BETWEEN(attr[i], 90, 97)) {
+ term.c.attr.fg = attr[i] - 90 + 8;
+ } else if (BETWEEN(attr[i], 100, 107)) {
+ term.c.attr.bg = attr[i] - 100 + 8;
+ } else {
+ fprintf(stderr,
+ "erresc(default): gfx attr %d unknown\n",
+ attr[i]);
+ csidump();
+ }
+ break;
+ }
+ }
+}
+
+void
+tsetscroll(int t, int b)
+{
+ int temp;
+
+ LIMIT(t, 0, term.row-1);
+ LIMIT(b, 0, term.row-1);
+ if (t > b) {
+ temp = t;
+ t = b;
+ b = temp;
+ }
+ term.top = t;
+ term.bot = b;
+}
+
+void
+tsetmode(int priv, int set, const int *args, int narg)
+{
+ int alt; const int *lim;
+
+ for (lim = args + narg; args < lim; ++args) {
+ if (priv) {
+ switch (*args) {
+ case 1: /* DECCKM -- Cursor key */
+ xsetmode(set, MODE_APPCURSOR);
+ break;
+ case 5: /* DECSCNM -- Reverse video */
+ xsetmode(set, MODE_REVERSE);
+ break;
+ case 6: /* DECOM -- Origin */
+ MODBIT(term.c.state, set, CURSOR_ORIGIN);
+ tmoveato(0, 0);
+ break;
+ case 7: /* DECAWM -- Auto wrap */
+ MODBIT(term.mode, set, MODE_WRAP);
+ break;
+ case 0: /* Error (IGNORED) */
+ case 2: /* DECANM -- ANSI/VT52 (IGNORED) */
+ case 3: /* DECCOLM -- Column (IGNORED) */
+ case 4: /* DECSCLM -- Scroll (IGNORED) */
+ case 8: /* DECARM -- Auto repeat (IGNORED) */
+ case 18: /* DECPFF -- Printer feed (IGNORED) */
+ case 19: /* DECPEX -- Printer extent (IGNORED) */
+ case 42: /* DECNRCM -- National characters (IGNORED) */
+ case 12: /* att610 -- Start blinking cursor (IGNORED) */
+ break;
+ case 25: /* DECTCEM -- Text Cursor Enable Mode */
+ xsetmode(!set, MODE_HIDE);
+ break;
+ case 9: /* X10 mouse compatibility mode */
+ xsetpointermotion(0);
+ xsetmode(0, MODE_MOUSE);
+ xsetmode(set, MODE_MOUSEX10);
+ break;
+ case 1000: /* 1000: report button press */
+ xsetpointermotion(0);
+ xsetmode(0, MODE_MOUSE);
+ xsetmode(set, MODE_MOUSEBTN);
+ break;
+ case 1002: /* 1002: report motion on button press */
+ xsetpointermotion(0);
+ xsetmode(0, MODE_MOUSE);
+ xsetmode(set, MODE_MOUSEMOTION);
+ break;
+ case 1003: /* 1003: enable all mouse motions */
+ xsetpointermotion(set);
+ xsetmode(0, MODE_MOUSE);
+ xsetmode(set, MODE_MOUSEMANY);
+ break;
+ case 1004: /* 1004: send focus events to tty */
+ xsetmode(set, MODE_FOCUS);
+ break;
+ case 1006: /* 1006: extended reporting mode */
+ xsetmode(set, MODE_MOUSESGR);
+ break;
+ case 1034:
+ xsetmode(set, MODE_8BIT);
+ break;
+ case 1049: /* swap screen & set/restore cursor as xterm */
+ if (!allowaltscreen)
+ break;
+ tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
+ /* FALLTHROUGH */
+ case 47: /* swap screen */
+ case 1047:
+ if (!allowaltscreen)
+ break;
+ alt = IS_SET(MODE_ALTSCREEN);
+ if (alt) {
+ tclearregion(0, 0, term.col-1,
+ term.row-1);
+ }
+ if (set ^ alt) /* set is always 1 or 0 */
+ tswapscreen();
+ if (*args != 1049)
+ break;
+ /* FALLTHROUGH */
+ case 1048:
+ tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
+ break;
+ case 2004: /* 2004: bracketed paste mode */
+ xsetmode(set, MODE_BRCKTPASTE);
+ break;
+ /* Not implemented mouse modes. See comments there. */
+ case 1001: /* mouse highlight mode; can hang the
+ terminal by design when implemented. */
+ case 1005: /* UTF-8 mouse mode; will confuse
+ applications not supporting UTF-8
+ and luit. */
+ case 1015: /* urxvt mangled mouse mode; incompatible
+ and can be mistaken for other control
+ codes. */
+ break;
+ default:
+ fprintf(stderr,
+ "erresc: unknown private set/reset mode %d\n",
+ *args);
+ break;
+ }
+ } else {
+ switch (*args) {
+ case 0: /* Error (IGNORED) */
+ break;
+ case 2:
+ xsetmode(set, MODE_KBDLOCK);
+ break;
+ case 4: /* IRM -- Insertion-replacement */
+ MODBIT(term.mode, set, MODE_INSERT);
+ break;
+ case 12: /* SRM -- Send/Receive */
+ MODBIT(term.mode, !set, MODE_ECHO);
+ break;
+ case 20: /* LNM -- Linefeed/new line */
+ MODBIT(term.mode, set, MODE_CRLF);
+ break;
+ default:
+ fprintf(stderr,
+ "erresc: unknown set/reset mode %d\n",
+ *args);
+ break;
+ }
+ }
+ }
+}
+
+void
+csihandle(void)
+{
+ char buf[40];
+ int len;
+
+ switch (csiescseq.mode[0]) {
+ default:
+ unknown:
+ fprintf(stderr, "erresc: unknown csi ");
+ csidump();
+ /* die(""); */
+ break;
+ case '@': /* ICH -- Insert <n> blank char */
+ DEFAULT(csiescseq.arg[0], 1);
+ tinsertblank(csiescseq.arg[0]);
+ break;
+ case 'A': /* CUU -- Cursor <n> Up */
+ DEFAULT(csiescseq.arg[0], 1);
+ tmoveto(term.c.x, term.c.y-csiescseq.arg[0]);
+ break;
+ case 'B': /* CUD -- Cursor <n> Down */
+ case 'e': /* VPR --Cursor <n> Down */
+ DEFAULT(csiescseq.arg[0], 1);
+ tmoveto(term.c.x, term.c.y+csiescseq.arg[0]);
+ break;
+ case 'i': /* MC -- Media Copy */
+ switch (csiescseq.arg[0]) {
+ case 0:
+ tdump();
+ break;
+ case 1:
+ tdumpline(term.c.y);
+ break;
+ case 2:
+ tdumpsel();
+ break;
+ case 4:
+ term.mode &= ~MODE_PRINT;
+ break;
+ case 5:
+ term.mode |= MODE_PRINT;
+ break;
+ }
+ break;
+ case 'c': /* DA -- Device Attributes */
+ if (csiescseq.arg[0] == 0)
+ ttywrite(vtiden, strlen(vtiden), 0);
+ break;
+ case 'b': /* REP -- if last char is printable print it <n> more times */
+ DEFAULT(csiescseq.arg[0], 1);
+ if (term.lastc)
+ while (csiescseq.arg[0]-- > 0)
+ tputc(term.lastc);
+ break;
+ case 'C': /* CUF -- Cursor <n> Forward */
+ case 'a': /* HPR -- Cursor <n> Forward */
+ DEFAULT(csiescseq.arg[0], 1);
+ tmoveto(term.c.x+csiescseq.arg[0], term.c.y);
+ break;
+ case 'D': /* CUB -- Cursor <n> Backward */
+ DEFAULT(csiescseq.arg[0], 1);
+ tmoveto(term.c.x-csiescseq.arg[0], term.c.y);
+ break;
+ case 'E': /* CNL -- Cursor <n> Down and first col */
+ DEFAULT(csiescseq.arg[0], 1);
+ tmoveto(0, term.c.y+csiescseq.arg[0]);
+ break;
+ case 'F': /* CPL -- Cursor <n> Up and first col */
+ DEFAULT(csiescseq.arg[0], 1);
+ tmoveto(0, term.c.y-csiescseq.arg[0]);
+ break;
+ case 'g': /* TBC -- Tabulation clear */
+ switch (csiescseq.arg[0]) {
+ case 0: /* clear current tab stop */
+ term.tabs[term.c.x] = 0;
+ break;
+ case 3: /* clear all the tabs */
+ memset(term.tabs, 0, term.col * sizeof(*term.tabs));
+ break;
+ default:
+ goto unknown;
+ }
+ break;
+ case 'G': /* CHA -- Move to <col> */
+ case '`': /* HPA */
+ DEFAULT(csiescseq.arg[0], 1);
+ tmoveto(csiescseq.arg[0]-1, term.c.y);
+ break;
+ case 'H': /* CUP -- Move to <row> <col> */
+ case 'f': /* HVP */
+ DEFAULT(csiescseq.arg[0], 1);
+ DEFAULT(csiescseq.arg[1], 1);
+ tmoveato(csiescseq.arg[1]-1, csiescseq.arg[0]-1);
+ break;
+ case 'I': /* CHT -- Cursor Forward Tabulation <n> tab stops */
+ DEFAULT(csiescseq.arg[0], 1);
+ tputtab(csiescseq.arg[0]);
+ break;
+ case 'J': /* ED -- Clear screen */
+ switch (csiescseq.arg[0]) {
+ case 0: /* below */
+ tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
+ if (term.c.y < term.row-1) {
+ tclearregion(0, term.c.y+1, term.col-1,
+ term.row-1);
+ }
+ break;
+ case 1: /* above */
+ if (term.c.y > 1)
+ tclearregion(0, 0, term.col-1, term.c.y-1);
+ tclearregion(0, term.c.y, term.c.x, term.c.y);
+ break;
+ case 2: /* all */
+ tclearregion(0, 0, term.col-1, term.row-1);
+ break;
+ default:
+ goto unknown;
+ }
+ break;
+ case 'K': /* EL -- Clear line */
+ switch (csiescseq.arg[0]) {
+ case 0: /* right */
+ tclearregion(term.c.x, term.c.y, term.col-1,
+ term.c.y);
+ break;
+ case 1: /* left */
+ tclearregion(0, term.c.y, term.c.x, term.c.y);
+ break;
+ case 2: /* all */
+ tclearregion(0, term.c.y, term.col-1, term.c.y);
+ break;
+ }
+ break;
+ case 'S': /* SU -- Scroll <n> line up */
+ DEFAULT(csiescseq.arg[0], 1);
+ tscrollup(term.top, csiescseq.arg[0], 0);
+ break;
+ case 'T': /* SD -- Scroll <n> line down */
+ DEFAULT(csiescseq.arg[0], 1);
+ tscrolldown(term.top, csiescseq.arg[0], 0);
+ break;
+ case 'L': /* IL -- Insert <n> blank lines */
+ DEFAULT(csiescseq.arg[0], 1);
+ tinsertblankline(csiescseq.arg[0]);
+ break;
+ case 'l': /* RM -- Reset Mode */
+ tsetmode(csiescseq.priv, 0, csiescseq.arg, csiescseq.narg);
+ break;
+ case 'M': /* DL -- Delete <n> lines */
+ DEFAULT(csiescseq.arg[0], 1);
+ tdeleteline(csiescseq.arg[0]);
+ break;
+ case 'X': /* ECH -- Erase <n> char */
+ DEFAULT(csiescseq.arg[0], 1);
+ tclearregion(term.c.x, term.c.y,
+ term.c.x + csiescseq.arg[0] - 1, term.c.y);
+ break;
+ case 'P': /* DCH -- Delete <n> char */
+ DEFAULT(csiescseq.arg[0], 1);
+ tdeletechar(csiescseq.arg[0]);
+ break;
+ case 'Z': /* CBT -- Cursor Backward Tabulation <n> tab stops */
+ DEFAULT(csiescseq.arg[0], 1);
+ tputtab(-csiescseq.arg[0]);
+ break;
+ case 'd': /* VPA -- Move to <row> */
+ DEFAULT(csiescseq.arg[0], 1);
+ tmoveato(term.c.x, csiescseq.arg[0]-1);
+ break;
+ case 'h': /* SM -- Set terminal mode */
+ tsetmode(csiescseq.priv, 1, csiescseq.arg, csiescseq.narg);
+ break;
+ case 'm': /* SGR -- Terminal attribute (color) */
+ tsetattr(csiescseq.arg, csiescseq.narg);
+ break;
+ case 'n': /* DSR -- Device Status Report */
+ switch (csiescseq.arg[0]) {
+ case 5: /* Status Report "OK" `0n` */
+ ttywrite("\033[0n", sizeof("\033[0n") - 1, 0);
+ break;
+ case 6: /* Report Cursor Position (CPR) "<row>;<column>R" */
+ len = snprintf(buf, sizeof(buf), "\033[%i;%iR",
+ term.c.y+1, term.c.x+1);
+ ttywrite(buf, len, 0);
+ break;
+ default:
+ goto unknown;
+ }
+ break;
+ case 'r': /* DECSTBM -- Set Scrolling Region */
+ if (csiescseq.priv) {
+ goto unknown;
+ } else {
+ DEFAULT(csiescseq.arg[0], 1);
+ DEFAULT(csiescseq.arg[1], term.row);
+ tsetscroll(csiescseq.arg[0]-1, csiescseq.arg[1]-1);
+ tmoveato(0, 0);
+ }
+ break;
+ case 's': /* DECSC -- Save cursor position (ANSI.SYS) */
+ tcursor(CURSOR_SAVE);
+ break;
+ case 'u': /* DECRC -- Restore cursor position (ANSI.SYS) */
+ tcursor(CURSOR_LOAD);
+ break;
+ case ' ':
+ switch (csiescseq.mode[1]) {
+ case 'q': /* DECSCUSR -- Set Cursor Style */
+ if (xsetcursor(csiescseq.arg[0]))
+ goto unknown;
+ break;
+ default:
+ goto unknown;
+ }
+ break;
+ }
+}
+
+void
+csidump(void)
+{
+ size_t i;
+ uint c;
+
+ fprintf(stderr, "ESC[");
+ for (i = 0; i < csiescseq.len; i++) {
+ c = csiescseq.buf[i] & 0xff;
+ if (isprint(c)) {
+ putc(c, stderr);
+ } else if (c == '\n') {
+ fprintf(stderr, "(\\n)");
+ } else if (c == '\r') {
+ fprintf(stderr, "(\\r)");
+ } else if (c == 0x1b) {
+ fprintf(stderr, "(\\e)");
+ } else {
+ fprintf(stderr, "(%02x)", c);
+ }
+ }
+ putc('\n', stderr);
+}
+
+void
+csireset(void)
+{
+ memset(&csiescseq, 0, sizeof(csiescseq));
+}
+
+void
+osc_color_response(int num, int index, int is_osc4)
+{
+ int n;
+ char buf[32];
+ unsigned char r, g, b;
+
+ if (xgetcolor(is_osc4 ? num : index, &r, &g, &b)) {
+ fprintf(stderr, "erresc: failed to fetch %s color %d\n",
+ is_osc4 ? "osc4" : "osc",
+ is_osc4 ? num : index);
+ return;
+ }
+
+ n = snprintf(buf, sizeof buf, "\033]%s%d;rgb:%02x%02x/%02x%02x/%02x%02x\007",
+ is_osc4 ? "4;" : "", num, r, r, g, g, b, b);
+ if (n < 0 || n >= sizeof(buf)) {
+ fprintf(stderr, "error: %s while printing %s response\n",
+ n < 0 ? "snprintf failed" : "truncation occurred",
+ is_osc4 ? "osc4" : "osc");
+ } else {
+ ttywrite(buf, n, 1);
+ }
+}
+
+void
+strhandle(void)
+{
+ char *p = NULL, *dec;
+ int j, narg, par;
+ const struct { int idx; char *str; } osc_table[] = {
+ { defaultfg, "foreground" },
+ { defaultbg, "background" },
+ { defaultcs, "cursor" }
+ };
+
+ term.esc &= ~(ESC_STR_END|ESC_STR);
+ strparse();
+ par = (narg = strescseq.narg) ? atoi(strescseq.args[0]) : 0;
+
+ switch (strescseq.type) {
+ case ']': /* OSC -- Operating System Command */
+ switch (par) {
+ case 0:
+ if (narg > 1) {
+ xsettitle(strescseq.args[1]);
+ xseticontitle(strescseq.args[1]);
+ }
+ return;
+ case 1:
+ if (narg > 1)
+ xseticontitle(strescseq.args[1]);
+ return;
+ case 2:
+ if (narg > 1)
+ xsettitle(strescseq.args[1]);
+ return;
+ case 52:
+ if (narg > 2 && allowwindowops) {
+ dec = base64dec(strescseq.args[2]);
+ if (dec) {
+ xsetsel(dec);
+ xclipcopy();
+ } else {
+ fprintf(stderr, "erresc: invalid base64\n");
+ }
+ }
+ return;
+ case 10:
+ case 11:
+ case 12:
+ if (narg < 2)
+ break;
+ p = strescseq.args[1];
+ if ((j = par - 10) < 0 || j >= LEN(osc_table))
+ break; /* shouldn't be possible */
+
+ if (!strcmp(p, "?")) {
+ osc_color_response(par, osc_table[j].idx, 0);
+ } else if (xsetcolorname(osc_table[j].idx, p)) {
+ fprintf(stderr, "erresc: invalid %s color: %s\n",
+ osc_table[j].str, p);
+ } else {
+ tfulldirt();
+ }
+ return;
+ case 4: /* color set */
+ if (narg < 3)
+ break;
+ p = strescseq.args[2];
+ /* FALLTHROUGH */
+ case 104: /* color reset */
+ j = (narg > 1) ? atoi(strescseq.args[1]) : -1;
+
+ if (p && !strcmp(p, "?")) {
+ osc_color_response(j, 0, 1);
+ } else if (xsetcolorname(j, p)) {
+ if (par == 104 && narg <= 1) {
+ xloadcols();
+ return; /* color reset without parameter */
+ }
+ fprintf(stderr, "erresc: invalid color j=%d, p=%s\n",
+ j, p ? p : "(null)");
+ } else {
+ /*
+ * TODO if defaultbg color is changed, borders
+ * are dirty
+ */
+ tfulldirt();
+ }
+ return;
+ }
+ break;
+ case 'k': /* old title set compatibility */
+ xsettitle(strescseq.args[0]);
+ return;
+ case 'P': /* DCS -- Device Control String */
+ case '_': /* APC -- Application Program Command */
+ case '^': /* PM -- Privacy Message */
+ return;
+ }
+
+ fprintf(stderr, "erresc: unknown str ");
+ strdump();
+}
+
+void
+strparse(void)
+{
+ int c;
+ char *p = strescseq.buf;
+
+ strescseq.narg = 0;
+ strescseq.buf[strescseq.len] = '\0';
+
+ if (*p == '\0')
+ return;
+
+ while (strescseq.narg < STR_ARG_SIZ) {
+ strescseq.args[strescseq.narg++] = p;
+ while ((c = *p) != ';' && c != '\0')
+ ++p;
+ if (c == '\0')
+ return;
+ *p++ = '\0';
+ }
+}
+
+void
+strdump(void)
+{
+ size_t i;
+ uint c;
+
+ fprintf(stderr, "ESC%c", strescseq.type);
+ for (i = 0; i < strescseq.len; i++) {
+ c = strescseq.buf[i] & 0xff;
+ if (c == '\0') {
+ putc('\n', stderr);
+ return;
+ } else if (isprint(c)) {
+ putc(c, stderr);
+ } else if (c == '\n') {
+ fprintf(stderr, "(\\n)");
+ } else if (c == '\r') {
+ fprintf(stderr, "(\\r)");
+ } else if (c == 0x1b) {
+ fprintf(stderr, "(\\e)");
+ } else {
+ fprintf(stderr, "(%02x)", c);
+ }
+ }
+ fprintf(stderr, "ESC\\\n");
+}
+
+void
+strreset(void)
+{
+ strescseq = (STREscape){
+ .buf = xrealloc(strescseq.buf, STR_BUF_SIZ),
+ .siz = STR_BUF_SIZ,
+ };
+}
+
+void
+sendbreak(const Arg *arg)
+{
+ if (tcsendbreak(cmdfd, 0))
+ perror("Error sending break");
+}
+
+void
+tprinter(char *s, size_t len)
+{
+ if (iofd != -1 && xwrite(iofd, s, len) < 0) {
+ perror("Error writing to output file");
+ close(iofd);
+ iofd = -1;
+ }
+}
+
+void
+toggleprinter(const Arg *arg)
+{
+ term.mode ^= MODE_PRINT;
+}
+
+void
+printscreen(const Arg *arg)
+{
+ tdump();
+}
+
+void
+printsel(const Arg *arg)
+{
+ tdumpsel();
+}
+
+void
+tdumpsel(void)
+{
+ char *ptr;
+
+ if ((ptr = getsel())) {
+ tprinter(ptr, strlen(ptr));
+ free(ptr);
+ }
+}
+
+void
+tdumpline(int n)
+{
+ char buf[UTF_SIZ];
+ const Glyph *bp, *end;
+
+ bp = &term.line[n][0];
+ end = &bp[MIN(tlinelen(n), term.col) - 1];
+ if (bp != end || bp->u != ' ') {
+ for ( ; bp <= end; ++bp)
+ tprinter(buf, utf8encode(bp->u, buf));
+ }
+ tprinter("\n", 1);
+}
+
+void
+tdump(void)
+{
+ int i;
+
+ for (i = 0; i < term.row; ++i)
+ tdumpline(i);
+}
+
+void
+tputtab(int n)
+{
+ uint x = term.c.x;
+
+ if (n > 0) {
+ while (x < term.col && n--)
+ for (++x; x < term.col && !term.tabs[x]; ++x)
+ /* nothing */ ;
+ } else if (n < 0) {
+ while (x > 0 && n++)
+ for (--x; x > 0 && !term.tabs[x]; --x)
+ /* nothing */ ;
+ }
+ term.c.x = LIMIT(x, 0, term.col-1);
+}
+
+void
+tdefutf8(char ascii)
+{
+ if (ascii == 'G')
+ term.mode |= MODE_UTF8;
+ else if (ascii == '@')
+ term.mode &= ~MODE_UTF8;
+}
+
+void
+tdeftran(char ascii)
+{
+ static char cs[] = "0B";
+ static int vcs[] = {CS_GRAPHIC0, CS_USA};
+ char *p;
+
+ if ((p = strchr(cs, ascii)) == NULL) {
+ fprintf(stderr, "esc unhandled charset: ESC ( %c\n", ascii);
+ } else {
+ term.trantbl[term.icharset] = vcs[p - cs];
+ }
+}
+
+void
+tdectest(char c)
+{
+ int x, y;
+
+ if (c == '8') { /* DEC screen alignment test. */
+ for (x = 0; x < term.col; ++x) {
+ for (y = 0; y < term.row; ++y)
+ tsetchar('E', &term.c.attr, x, y);
+ }
+ }
+}
+
+void
+tstrsequence(uchar c)
+{
+ switch (c) {
+ case 0x90: /* DCS -- Device Control String */
+ c = 'P';
+ break;
+ case 0x9f: /* APC -- Application Program Command */
+ c = '_';
+ break;
+ case 0x9e: /* PM -- Privacy Message */
+ c = '^';
+ break;
+ case 0x9d: /* OSC -- Operating System Command */
+ c = ']';
+ break;
+ }
+ strreset();
+ strescseq.type = c;
+ term.esc |= ESC_STR;
+}
+
+void
+tcontrolcode(uchar ascii)
+{
+ switch (ascii) {
+ case '\t': /* HT */
+ tputtab(1);
+ return;
+ case '\b': /* BS */
+ tmoveto(term.c.x-1, term.c.y);
+ return;
+ case '\r': /* CR */
+ tmoveto(0, term.c.y);
+ return;
+ case '\f': /* LF */
+ case '\v': /* VT */
+ case '\n': /* LF */
+ /* go to first col if the mode is set */
+ tnewline(IS_SET(MODE_CRLF));
+ return;
+ case '\a': /* BEL */
+ if (term.esc & ESC_STR_END) {
+ /* backwards compatibility to xterm */
+ strhandle();
+ } else {
+ xbell();
+ }
+ break;
+ case '\033': /* ESC */
+ csireset();
+ term.esc &= ~(ESC_CSI|ESC_ALTCHARSET|ESC_TEST);
+ term.esc |= ESC_START;
+ return;
+ case '\016': /* SO (LS1 -- Locking shift 1) */
+ case '\017': /* SI (LS0 -- Locking shift 0) */
+ term.charset = 1 - (ascii - '\016');
+ return;
+ case '\032': /* SUB */
+ tsetchar('?', &term.c.attr, term.c.x, term.c.y);
+ /* FALLTHROUGH */
+ case '\030': /* CAN */
+ csireset();
+ break;
+ case '\005': /* ENQ (IGNORED) */
+ case '\000': /* NUL (IGNORED) */
+ case '\021': /* XON (IGNORED) */
+ case '\023': /* XOFF (IGNORED) */
+ case 0177: /* DEL (IGNORED) */
+ return;
+ case 0x80: /* TODO: PAD */
+ case 0x81: /* TODO: HOP */
+ case 0x82: /* TODO: BPH */
+ case 0x83: /* TODO: NBH */
+ case 0x84: /* TODO: IND */
+ break;
+ case 0x85: /* NEL -- Next line */
+ tnewline(1); /* always go to first col */
+ break;
+ case 0x86: /* TODO: SSA */
+ case 0x87: /* TODO: ESA */
+ break;
+ case 0x88: /* HTS -- Horizontal tab stop */
+ term.tabs[term.c.x] = 1;
+ break;
+ case 0x89: /* TODO: HTJ */
+ case 0x8a: /* TODO: VTS */
+ case 0x8b: /* TODO: PLD */
+ case 0x8c: /* TODO: PLU */
+ case 0x8d: /* TODO: RI */
+ case 0x8e: /* TODO: SS2 */
+ case 0x8f: /* TODO: SS3 */
+ case 0x91: /* TODO: PU1 */
+ case 0x92: /* TODO: PU2 */
+ case 0x93: /* TODO: STS */
+ case 0x94: /* TODO: CCH */
+ case 0x95: /* TODO: MW */
+ case 0x96: /* TODO: SPA */
+ case 0x97: /* TODO: EPA */
+ case 0x98: /* TODO: SOS */
+ case 0x99: /* TODO: SGCI */
+ break;
+ case 0x9a: /* DECID -- Identify Terminal */
+ ttywrite(vtiden, strlen(vtiden), 0);
+ break;
+ case 0x9b: /* TODO: CSI */
+ case 0x9c: /* TODO: ST */
+ break;
+ case 0x90: /* DCS -- Device Control String */
+ case 0x9d: /* OSC -- Operating System Command */
+ case 0x9e: /* PM -- Privacy Message */
+ case 0x9f: /* APC -- Application Program Command */
+ tstrsequence(ascii);
+ return;
+ }
+ /* only CAN, SUB, \a and C1 chars interrupt a sequence */
+ term.esc &= ~(ESC_STR_END|ESC_STR);
+}
+
+/*
+ * returns 1 when the sequence is finished and it hasn't to read
+ * more characters for this sequence, otherwise 0
+ */
+int
+eschandle(uchar ascii)
+{
+ switch (ascii) {
+ case '[':
+ term.esc |= ESC_CSI;
+ return 0;
+ case '#':
+ term.esc |= ESC_TEST;
+ return 0;
+ case '%':
+ term.esc |= ESC_UTF8;
+ return 0;
+ case 'P': /* DCS -- Device Control String */
+ case '_': /* APC -- Application Program Command */
+ case '^': /* PM -- Privacy Message */
+ case ']': /* OSC -- Operating System Command */
+ case 'k': /* old title set compatibility */
+ tstrsequence(ascii);
+ return 0;
+ case 'n': /* LS2 -- Locking shift 2 */
+ case 'o': /* LS3 -- Locking shift 3 */
+ term.charset = 2 + (ascii - 'n');
+ break;
+ case '(': /* GZD4 -- set primary charset G0 */
+ case ')': /* G1D4 -- set secondary charset G1 */
+ case '*': /* G2D4 -- set tertiary charset G2 */
+ case '+': /* G3D4 -- set quaternary charset G3 */
+ term.icharset = ascii - '(';
+ term.esc |= ESC_ALTCHARSET;
+ return 0;
+ case 'D': /* IND -- Linefeed */
+ if (term.c.y == term.bot) {
+ tscrollup(term.top, 1, 1);
+ } else {
+ tmoveto(term.c.x, term.c.y+1);
+ }
+ break;
+ case 'E': /* NEL -- Next line */
+ tnewline(1); /* always go to first col */
+ break;
+ case 'H': /* HTS -- Horizontal tab stop */
+ term.tabs[term.c.x] = 1;
+ break;
+ case 'M': /* RI -- Reverse index */
+ if (term.c.y == term.top) {
+ tscrolldown(term.top, 1, 1);
+ } else {
+ tmoveto(term.c.x, term.c.y-1);
+ }
+ break;
+ case 'Z': /* DECID -- Identify Terminal */
+ ttywrite(vtiden, strlen(vtiden), 0);
+ break;
+ case 'c': /* RIS -- Reset to initial state */
+ treset();
+ resettitle();
+ xloadcols();
+ break;
+ case '=': /* DECPAM -- Application keypad */
+ xsetmode(1, MODE_APPKEYPAD);
+ break;
+ case '>': /* DECPNM -- Normal keypad */
+ xsetmode(0, MODE_APPKEYPAD);
+ break;
+ case '7': /* DECSC -- Save Cursor */
+ tcursor(CURSOR_SAVE);
+ break;
+ case '8': /* DECRC -- Restore Cursor */
+ tcursor(CURSOR_LOAD);
+ break;
+ case '\\': /* ST -- String Terminator */
+ if (term.esc & ESC_STR_END)
+ strhandle();
+ break;
+ default:
+ fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n",
+ (uchar) ascii, isprint(ascii)? ascii:'.');
+ break;
+ }
+ return 1;
+}
+
+void
+tputc(Rune u)
+{
+ char c[UTF_SIZ];
+ int control;
+ int width, len;
+ Glyph *gp;
+
+ control = ISCONTROL(u);
+ if (u < 127 || !IS_SET(MODE_UTF8)) {
+ c[0] = u;
+ width = len = 1;
+ } else {
+ len = utf8encode(u, c);
+ if (!control && (width = wcwidth(u)) == -1)
+ width = 1;
+ }
+
+ if (IS_SET(MODE_PRINT))
+ tprinter(c, len);
+
+ /*
+ * STR sequence must be checked before anything else
+ * because it uses all following characters until it
+ * receives a ESC, a SUB, a ST or any other C1 control
+ * character.
+ */
+ if (term.esc & ESC_STR) {
+ if (u == '\a' || u == 030 || u == 032 || u == 033 ||
+ ISCONTROLC1(u)) {
+ term.esc &= ~(ESC_START|ESC_STR);
+ term.esc |= ESC_STR_END;
+ goto check_control_code;
+ }
+
+ if (strescseq.len+len >= strescseq.siz) {
+ /*
+ * Here is a bug in terminals. If the user never sends
+ * some code to stop the str or esc command, then st
+ * will stop responding. But this is better than
+ * silently failing with unknown characters. At least
+ * then users will report back.
+ *
+ * In the case users ever get fixed, here is the code:
+ */
+ /*
+ * term.esc = 0;
+ * strhandle();
+ */
+ if (strescseq.siz > (SIZE_MAX - UTF_SIZ) / 2)
+ return;
+ strescseq.siz *= 2;
+ strescseq.buf = xrealloc(strescseq.buf, strescseq.siz);
+ }
+
+ memmove(&strescseq.buf[strescseq.len], c, len);
+ strescseq.len += len;
+ return;
+ }
+
+check_control_code:
+ /*
+ * Actions of control codes must be performed as soon they arrive
+ * because they can be embedded inside a control sequence, and
+ * they must not cause conflicts with sequences.
+ */
+ if (control) {
+ /* in UTF-8 mode ignore handling C1 control characters */
+ if (IS_SET(MODE_UTF8) && ISCONTROLC1(u))
+ return;
+ tcontrolcode(u);
+ /*
+ * control codes are not shown ever
+ */
+ if (!term.esc)
+ term.lastc = 0;
+ return;
+ } else if (term.esc & ESC_START) {
+ if (term.esc & ESC_CSI) {
+ csiescseq.buf[csiescseq.len++] = u;
+ if (BETWEEN(u, 0x40, 0x7E)
+ || csiescseq.len >= \
+ sizeof(csiescseq.buf)-1) {
+ term.esc = 0;
+ csiparse();
+ csihandle();
+ }
+ return;
+ } else if (term.esc & ESC_UTF8) {
+ tdefutf8(u);
+ } else if (term.esc & ESC_ALTCHARSET) {
+ tdeftran(u);
+ } else if (term.esc & ESC_TEST) {
+ tdectest(u);
+ } else {
+ if (!eschandle(u))
+ return;
+ /* sequence already finished */
+ }
+ term.esc = 0;
+ /*
+ * All characters which form part of a sequence are not
+ * printed
+ */
+ return;
+ }
+ if (selected(term.c.x, term.c.y))
+ selclear();
+
+ gp = &term.line[term.c.y][term.c.x];
+ if (IS_SET(MODE_WRAP) && (term.c.state & CURSOR_WRAPNEXT)) {
+ gp->mode |= ATTR_WRAP;
+ tnewline(1);
+ gp = &term.line[term.c.y][term.c.x];
+ }
+
+ if (IS_SET(MODE_INSERT) && term.c.x+width < term.col) {
+ memmove(gp+width, gp, (term.col - term.c.x - width) * sizeof(Glyph));
+ gp->mode &= ~ATTR_WIDE;
+ }
+
+ if (term.c.x+width > term.col) {
+ tnewline(1);
+ gp = &term.line[term.c.y][term.c.x];
+ }
+
+ tsetchar(u, &term.c.attr, term.c.x, term.c.y);
+ term.lastc = u;
+
+ if (width == 2) {
+ gp->mode |= ATTR_WIDE;
+ if (term.c.x+1 < term.col) {
+ if (gp[1].mode == ATTR_WIDE && term.c.x+2 < term.col) {
+ gp[2].u = ' ';
+ gp[2].mode &= ~ATTR_WDUMMY;
+ }
+ gp[1].u = '\0';
+ gp[1].mode = ATTR_WDUMMY;
+ }
+ }
+ if (term.c.x+width < term.col) {
+ tmoveto(term.c.x+width, term.c.y);
+ } else {
+ term.c.state |= CURSOR_WRAPNEXT;
+ }
+}
+
+int
+twrite(const char *buf, int buflen, int show_ctrl)
+{
+ int charsize;
+ Rune u;
+ int n;
+
+ for (n = 0; n < buflen; n += charsize) {
+ if (IS_SET(MODE_UTF8)) {
+ /* process a complete utf8 char */
+ charsize = utf8decode(buf + n, &u, buflen - n);
+ if (charsize == 0)
+ break;
+ } else {
+ u = buf[n] & 0xFF;
+ charsize = 1;
+ }
+ if (show_ctrl && ISCONTROL(u)) {
+ if (u & 0x80) {
+ u &= 0x7f;
+ tputc('^');
+ tputc('[');
+ } else if (u != '\n' && u != '\r' && u != '\t') {
+ u ^= 0x40;
+ tputc('^');
+ }
+ }
+ tputc(u);
+ }
+ return n;
+}
+
+void
+tresize(int col, int row)
+{
+ int i, j;
+ int minrow = MIN(row, term.row);
+ int mincol = MIN(col, term.col);
+ int *bp;
+ TCursor c;
+
+ if (col < 1 || row < 1) {
+ fprintf(stderr,
+ "tresize: error resizing to %dx%d\n", col, row);
+ return;
+ }
+
+ /*
+ * slide screen to keep cursor where we expect it -
+ * tscrollup would work here, but we can optimize to
+ * memmove because we're freeing the earlier lines
+ */
+ for (i = 0; i <= term.c.y - row; i++) {
+ free(term.line[i]);
+ free(term.alt[i]);
+ }
+ /* ensure that both src and dst are not NULL */
+ if (i > 0) {
+ memmove(term.line, term.line + i, row * sizeof(Line));
+ memmove(term.alt, term.alt + i, row * sizeof(Line));
+ }
+ for (i += row; i < term.row; i++) {
+ free(term.line[i]);
+ free(term.alt[i]);
+ }
+
+ /* resize to new height */
+ term.line = xrealloc(term.line, row * sizeof(Line));
+ term.alt = xrealloc(term.alt, row * sizeof(Line));
+ term.dirty = xrealloc(term.dirty, row * sizeof(*term.dirty));
+ term.tabs = xrealloc(term.tabs, col * sizeof(*term.tabs));
+
+ for (i = 0; i < HISTSIZE; i++) {
+ term.hist[i] = xrealloc(term.hist[i], col * sizeof(Glyph));
+ for (j = mincol; j < col; j++) {
+ term.hist[i][j] = term.c.attr;
+ term.hist[i][j].u = ' ';
+ }
+ }
+
+ /* resize each row to new width, zero-pad if needed */
+ for (i = 0; i < minrow; i++) {
+ term.line[i] = xrealloc(term.line[i], col * sizeof(Glyph));
+ term.alt[i] = xrealloc(term.alt[i], col * sizeof(Glyph));
+ }
+
+ /* allocate any new rows */
+ for (/* i = minrow */; i < row; i++) {
+ term.line[i] = xmalloc(col * sizeof(Glyph));
+ term.alt[i] = xmalloc(col * sizeof(Glyph));
+ }
+ if (col > term.col) {
+ bp = term.tabs + term.col;
+
+ memset(bp, 0, sizeof(*term.tabs) * (col - term.col));
+ while (--bp > term.tabs && !*bp)
+ /* nothing */ ;
+ for (bp += tabspaces; bp < term.tabs + col; bp += tabspaces)
+ *bp = 1;
+ }
+ /* update terminal size */
+ term.col = col;
+ term.row = row;
+ /* reset scrolling region */
+ tsetscroll(0, row-1);
+ /* make use of the LIMIT in tmoveto */
+ tmoveto(term.c.x, term.c.y);
+ /* Clearing both screens (it makes dirty all lines) */
+ c = term.c;
+ for (i = 0; i < 2; i++) {
+ if (mincol < col && 0 < minrow) {
+ tclearregion(mincol, 0, col - 1, minrow - 1);
+ }
+ if (0 < col && minrow < row) {
+ tclearregion(0, minrow, col - 1, row - 1);
+ }
+ tswapscreen();
+ tcursor(CURSOR_LOAD);
+ }
+ term.c = c;
+}
+
+void
+resettitle(void)
+{
+ xsettitle(NULL);
+}
+
+void
+drawregion(int x1, int y1, int x2, int y2)
+{
+ int y;
+
+ for (y = y1; y < y2; y++) {
+ if (!term.dirty[y])
+ continue;
+
+ term.dirty[y] = 0;
+ xdrawline(TLINE(y), x1, y, x2);
+ }
+}
+
+void
+draw(void)
+{
+ int cx = term.c.x, ocx = term.ocx, ocy = term.ocy;
+
+ if (!xstartdraw())
+ return;
+
+ /* adjust cursor position */
+ LIMIT(term.ocx, 0, term.col-1);
+ LIMIT(term.ocy, 0, term.row-1);
+ if (term.line[term.ocy][term.ocx].mode & ATTR_WDUMMY)
+ term.ocx--;
+ if (term.line[term.c.y][cx].mode & ATTR_WDUMMY)
+ cx--;
+
+ drawregion(0, 0, term.col, term.row);
+ if (term.scr == 0)
+ xdrawcursor(cx, term.c.y, term.line[term.c.y][cx],
+ term.ocx, term.ocy, term.line[term.ocy][term.ocx]);
+ term.ocx = cx;
+ term.ocy = term.c.y;
+ xfinishdraw();
+ if (ocx != term.ocx || ocy != term.ocy)
+ xximspot(term.ocx, term.ocy);
+}
+
+void
+redraw(void)
+{
+ tfulldirt();
+ draw();
+}
diff --git a/st/st.h b/st/st.h
@@ -0,0 +1,210 @@
+/* See LICENSE for license details. */
+
+#include <stdint.h>
+#include <sys/types.h>
+
+/* macros */
+#define MIN(a, b) ((a) < (b) ? (a) : (b))
+#define MAX(a, b) ((a) < (b) ? (b) : (a))
+#define LEN(a) (sizeof(a) / sizeof(a)[0])
+#define BETWEEN(x, a, b) ((a) <= (x) && (x) <= (b))
+#define DIVCEIL(n, d) (((n) + ((d) - 1)) / (d))
+#define DEFAULT(a, b) (a) = (a) ? (a) : (b)
+#define LIMIT(x, a, b) (x) = (x) < (a) ? (a) : (x) > (b) ? (b) : (x)
+#define ATTRCMP(a, b) ((a).mode != (b).mode || (a).fg != (b).fg || \
+ (a).bg != (b).bg || (a).decor != (b).decor)
+#define TIMEDIFF(t1, t2) ((t1.tv_sec-t2.tv_sec)*1000 + \
+ (t1.tv_nsec-t2.tv_nsec)/1E6)
+#define MODBIT(x, set, bit) ((set) ? ((x) |= (bit)) : ((x) &= ~(bit)))
+
+#define TRUECOLOR(r,g,b) (1 << 24 | (r) << 16 | (g) << 8 | (b))
+#define IS_TRUECOL(x) (1 << 24 & (x))
+
+// This decor color indicates that the fg color should be used. Note that it's
+// not a 24-bit color because the 25-th bit is not set.
+#define DECOR_DEFAULT_COLOR 0x0ffffff
+
+enum glyph_attribute {
+ ATTR_NULL = 0,
+ ATTR_BOLD = 1 << 0,
+ ATTR_FAINT = 1 << 1,
+ ATTR_ITALIC = 1 << 2,
+ ATTR_UNDERLINE = 1 << 3,
+ ATTR_BLINK = 1 << 4,
+ ATTR_REVERSE = 1 << 5,
+ ATTR_INVISIBLE = 1 << 6,
+ ATTR_STRUCK = 1 << 7,
+ ATTR_WRAP = 1 << 8,
+ ATTR_WIDE = 1 << 9,
+ ATTR_WDUMMY = 1 << 10,
+ ATTR_BOLD_FAINT = ATTR_BOLD | ATTR_FAINT,
+ ATTR_IMAGE = 1 << 14,
+};
+
+enum selection_mode {
+ SEL_IDLE = 0,
+ SEL_EMPTY = 1,
+ SEL_READY = 2
+};
+
+enum selection_type {
+ SEL_REGULAR = 1,
+ SEL_RECTANGULAR = 2
+};
+
+enum selection_snap {
+ SNAP_WORD = 1,
+ SNAP_LINE = 2
+};
+
+enum underline_style {
+ UNDERLINE_STRAIGHT = 1,
+ UNDERLINE_DOUBLE = 2,
+ UNDERLINE_CURLY = 3,
+ UNDERLINE_DOTTED = 4,
+ UNDERLINE_DASHED = 5,
+};
+
+typedef unsigned char uchar;
+typedef unsigned int uint;
+typedef unsigned long ulong;
+typedef unsigned short ushort;
+
+typedef uint_least32_t Rune;
+
+#define Glyph Glyph_
+typedef struct {
+ Rune u; /* character code */
+ ushort mode; /* attribute flags */
+ uint32_t fg; /* foreground */
+ uint32_t bg; /* background */
+ uint32_t decor; /* decoration (like underline) */
+} Glyph;
+
+typedef Glyph *Line;
+
+typedef union {
+ int i;
+ uint ui;
+ float f;
+ const void *v;
+ const char *s;
+} Arg;
+
+void die(const char *, ...);
+void redraw(void);
+void draw(void);
+
+void kscrolldown(const Arg *);
+void kscrollup(const Arg *);
+void printscreen(const Arg *);
+void printsel(const Arg *);
+void sendbreak(const Arg *);
+void toggleprinter(const Arg *);
+
+int tattrset(int);
+void tnew(int, int);
+void tresize(int, int);
+void tsetdirtattr(int);
+void ttyhangup(void);
+int ttynew(const char *, char *, const char *, char **);
+size_t ttyread(void);
+void ttyresize(int, int);
+void ttywrite(const char *, size_t, int);
+
+void resettitle(void);
+
+void selclear(void);
+void selinit(void);
+void selstart(int, int, int);
+void selextend(int, int, int, int);
+int selected(int, int);
+char *getsel(void);
+
+Glyph getglyphat(int, int);
+
+size_t utf8encode(Rune, char *);
+
+void *xmalloc(size_t);
+void *xrealloc(void *, size_t);
+char *xstrdup(const char *);
+
+/* config.h globals */
+extern char *utmp;
+extern char *scroll;
+extern char *stty_args;
+extern char *vtiden;
+extern wchar_t *worddelimiters;
+extern int allowaltscreen;
+extern int allowwindowops;
+extern char *termname;
+extern unsigned int tabspaces;
+extern unsigned int defaultfg;
+extern unsigned int defaultbg;
+extern unsigned int defaultcs;
+
+// Accessors to decoration properties stored in `decor`.
+// The 25-th bit is used to indicate if it's a 24-bit color.
+static inline uint32_t tgetdecorcolor(Glyph *g) { return g->decor & 0x1ffffff; }
+static inline uint32_t tgetdecorstyle(Glyph *g) { return (g->decor >> 25) & 0x7; }
+static inline void tsetdecorcolor(Glyph *g, uint32_t color) {
+ g->decor = (g->decor & ~0x1ffffff) | (color & 0x1ffffff);
+}
+static inline void tsetdecorstyle(Glyph *g, uint32_t style) {
+ g->decor = (g->decor & ~(0x7 << 25)) | ((style & 0x7) << 25);
+}
+
+
+// Some accessors to image placeholder properties stored in `u`:
+// - row (1-base) - 9 bits
+// - column (1-base) - 9 bits
+// - most significant byte of the image id plus 1 - 9 bits (0 means unspecified,
+// don't forget to subtract 1).
+// - the original number of diacritics (0, 1, 2, or 3) - 2 bits
+// - whether this is a classic (1) or Unicode (0) placeholder - 1 bit
+static inline uint32_t tgetimgrow(Glyph *g) { return g->u & 0x1ff; }
+static inline uint32_t tgetimgcol(Glyph *g) { return (g->u >> 9) & 0x1ff; }
+static inline uint32_t tgetimgid4thbyteplus1(Glyph *g) { return (g->u >> 18) & 0x1ff; }
+static inline uint32_t tgetimgdiacriticcount(Glyph *g) { return (g->u >> 27) & 0x3; }
+static inline uint32_t tgetisclassicplaceholder(Glyph *g) { return (g->u >> 29) & 0x1; }
+static inline void tsetimgrow(Glyph *g, uint32_t row) {
+ g->u = (g->u & ~0x1ff) | (row & 0x1ff);
+}
+static inline void tsetimgcol(Glyph *g, uint32_t col) {
+ g->u = (g->u & ~(0x1ff << 9)) | ((col & 0x1ff) << 9);
+}
+static inline void tsetimg4thbyteplus1(Glyph *g, uint32_t byteplus1) {
+ g->u = (g->u & ~(0x1ff << 18)) | ((byteplus1 & 0x1ff) << 18);
+}
+static inline void tsetimgdiacriticcount(Glyph *g, uint32_t count) {
+ g->u = (g->u & ~(0x3 << 27)) | ((count & 0x3) << 27);
+}
+static inline void tsetisclassicplaceholder(Glyph *g, uint32_t isclassic) {
+ g->u = (g->u & ~(0x1 << 29)) | ((isclassic & 0x1) << 29);
+}
+
+/// Returns the full image id. This is a naive implementation, if the most
+/// significant byte is not specified, it's assumed to be 0 instead of inferring
+/// it from the cells to the left.
+static inline uint32_t tgetimgid(Glyph *g) {
+ uint32_t msb = tgetimgid4thbyteplus1(g);
+ if (msb != 0)
+ --msb;
+ return (msb << 24) | (g->fg & 0xFFFFFF);
+}
+
+/// Sets the full image id.
+static inline void tsetimgid(Glyph *g, uint32_t id) {
+ g->fg = (id & 0xFFFFFF) | (1 << 24);
+ tsetimg4thbyteplus1(g, ((id >> 24) & 0xFF) + 1);
+}
+
+static inline uint32_t tgetimgplacementid(Glyph *g) {
+ if (tgetdecorcolor(g) == DECOR_DEFAULT_COLOR)
+ return 0;
+ return g->decor & 0xFFFFFF;
+}
+
+static inline void tsetimgplacementid(Glyph *g, uint32_t id) {
+ g->decor = (id & 0xFFFFFF) | (1 << 24);
+}
diff --git a/st/st.h.orig b/st/st.h.orig
@@ -0,0 +1,128 @@
+/* See LICENSE for license details. */
+
+#include <stdint.h>
+#include <sys/types.h>
+
+/* macros */
+#define MIN(a, b) ((a) < (b) ? (a) : (b))
+#define MAX(a, b) ((a) < (b) ? (b) : (a))
+#define LEN(a) (sizeof(a) / sizeof(a)[0])
+#define BETWEEN(x, a, b) ((a) <= (x) && (x) <= (b))
+#define DIVCEIL(n, d) (((n) + ((d) - 1)) / (d))
+#define DEFAULT(a, b) (a) = (a) ? (a) : (b)
+#define LIMIT(x, a, b) (x) = (x) < (a) ? (a) : (x) > (b) ? (b) : (x)
+#define ATTRCMP(a, b) ((a).mode != (b).mode || (a).fg != (b).fg || \
+ (a).bg != (b).bg)
+#define TIMEDIFF(t1, t2) ((t1.tv_sec-t2.tv_sec)*1000 + \
+ (t1.tv_nsec-t2.tv_nsec)/1E6)
+#define MODBIT(x, set, bit) ((set) ? ((x) |= (bit)) : ((x) &= ~(bit)))
+
+#define TRUECOLOR(r,g,b) (1 << 24 | (r) << 16 | (g) << 8 | (b))
+#define IS_TRUECOL(x) (1 << 24 & (x))
+
+enum glyph_attribute {
+ ATTR_NULL = 0,
+ ATTR_BOLD = 1 << 0,
+ ATTR_FAINT = 1 << 1,
+ ATTR_ITALIC = 1 << 2,
+ ATTR_UNDERLINE = 1 << 3,
+ ATTR_BLINK = 1 << 4,
+ ATTR_REVERSE = 1 << 5,
+ ATTR_INVISIBLE = 1 << 6,
+ ATTR_STRUCK = 1 << 7,
+ ATTR_WRAP = 1 << 8,
+ ATTR_WIDE = 1 << 9,
+ ATTR_WDUMMY = 1 << 10,
+ ATTR_BOLD_FAINT = ATTR_BOLD | ATTR_FAINT,
+};
+
+enum selection_mode {
+ SEL_IDLE = 0,
+ SEL_EMPTY = 1,
+ SEL_READY = 2
+};
+
+enum selection_type {
+ SEL_REGULAR = 1,
+ SEL_RECTANGULAR = 2
+};
+
+enum selection_snap {
+ SNAP_WORD = 1,
+ SNAP_LINE = 2
+};
+
+typedef unsigned char uchar;
+typedef unsigned int uint;
+typedef unsigned long ulong;
+typedef unsigned short ushort;
+
+typedef uint_least32_t Rune;
+
+#define Glyph Glyph_
+typedef struct {
+ Rune u; /* character code */
+ ushort mode; /* attribute flags */
+ uint32_t fg; /* foreground */
+ uint32_t bg; /* background */
+} Glyph;
+
+typedef Glyph *Line;
+
+typedef union {
+ int i;
+ uint ui;
+ float f;
+ const void *v;
+ const char *s;
+} Arg;
+
+void die(const char *, ...);
+void redraw(void);
+void draw(void);
+
+void kscrolldown(const Arg *);
+void kscrollup(const Arg *);
+void printscreen(const Arg *);
+void printsel(const Arg *);
+void sendbreak(const Arg *);
+void toggleprinter(const Arg *);
+
+int tattrset(int);
+void tnew(int, int);
+void tresize(int, int);
+void tsetdirtattr(int);
+void ttyhangup(void);
+int ttynew(const char *, char *, const char *, char **);
+size_t ttyread(void);
+void ttyresize(int, int);
+void ttywrite(const char *, size_t, int);
+
+void resettitle(void);
+
+void selclear(void);
+void selinit(void);
+void selstart(int, int, int);
+void selextend(int, int, int, int);
+int selected(int, int);
+char *getsel(void);
+
+size_t utf8encode(Rune, char *);
+
+void *xmalloc(size_t);
+void *xrealloc(void *, size_t);
+char *xstrdup(const char *);
+
+/* config.h globals */
+extern char *utmp;
+extern char *scroll;
+extern char *stty_args;
+extern char *vtiden;
+extern wchar_t *worddelimiters;
+extern int allowaltscreen;
+extern int allowwindowops;
+extern char *termname;
+extern unsigned int tabspaces;
+extern unsigned int defaultfg;
+extern unsigned int defaultbg;
+extern unsigned int defaultcs;
diff --git a/st/st.info b/st/st.info
@@ -0,0 +1,245 @@
+st-mono| simpleterm monocolor,
+ acsc=+C\,D-A.B0E``aaffgghFiGjjkkllmmnnooppqqrrssttuuvvwwxxyyzz{{||}}~~,
+ am,
+ bce,
+ bel=^G,
+ blink=\E[5m,
+ bold=\E[1m,
+ cbt=\E[Z,
+ cvvis=\E[?25h,
+ civis=\E[?25l,
+ clear=\E[H\E[2J,
+ cnorm=\E[?12l\E[?25h,
+ colors#2,
+ cols#80,
+ cr=^M,
+ csr=\E[%i%p1%d;%p2%dr,
+ cub=\E[%p1%dD,
+ cub1=^H,
+ cud1=^J,
+ cud=\E[%p1%dB,
+ cuf1=\E[C,
+ cuf=\E[%p1%dC,
+ cup=\E[%i%p1%d;%p2%dH,
+ cuu1=\E[A,
+ cuu=\E[%p1%dA,
+ dch=\E[%p1%dP,
+ dch1=\E[P,
+ dim=\E[2m,
+ dl=\E[%p1%dM,
+ dl1=\E[M,
+ ech=\E[%p1%dX,
+ ed=\E[J,
+ el=\E[K,
+ el1=\E[1K,
+ enacs=\E)0,
+ flash=\E[?5h$<80/>\E[?5l,
+ fsl=^G,
+ home=\E[H,
+ hpa=\E[%i%p1%dG,
+ hs,
+ ht=^I,
+ hts=\EH,
+ ich=\E[%p1%d@,
+ il1=\E[L,
+ il=\E[%p1%dL,
+ ind=^J,
+ indn=\E[%p1%dS,
+ invis=\E[8m,
+ is2=\E[4l\E>\E[?1034l,
+ it#8,
+ kel=\E[1;2F,
+ ked=\E[1;5F,
+ ka1=\E[1~,
+ ka3=\E[5~,
+ kc1=\E[4~,
+ kc3=\E[6~,
+ kbs=\177,
+ kcbt=\E[Z,
+ kb2=\EOu,
+ kcub1=\EOD,
+ kcud1=\EOB,
+ kcuf1=\EOC,
+ kcuu1=\EOA,
+ kDC=\E[3;2~,
+ kent=\EOM,
+ kEND=\E[1;2F,
+ kIC=\E[2;2~,
+ kNXT=\E[6;2~,
+ kPRV=\E[5;2~,
+ kHOM=\E[1;2H,
+ kLFT=\E[1;2D,
+ kRIT=\E[1;2C,
+ kind=\E[1;2B,
+ kri=\E[1;2A,
+ kclr=\E[3;5~,
+ kdl1=\E[3;2~,
+ kdch1=\E[3~,
+ kich1=\E[2~,
+ kend=\E[4~,
+ kf1=\EOP,
+ kf2=\EOQ,
+ kf3=\EOR,
+ kf4=\EOS,
+ kf5=\E[15~,
+ kf6=\E[17~,
+ kf7=\E[18~,
+ kf8=\E[19~,
+ kf9=\E[20~,
+ kf10=\E[21~,
+ kf11=\E[23~,
+ kf12=\E[24~,
+ kf13=\E[1;2P,
+ kf14=\E[1;2Q,
+ kf15=\E[1;2R,
+ kf16=\E[1;2S,
+ kf17=\E[15;2~,
+ kf18=\E[17;2~,
+ kf19=\E[18;2~,
+ kf20=\E[19;2~,
+ kf21=\E[20;2~,
+ kf22=\E[21;2~,
+ kf23=\E[23;2~,
+ kf24=\E[24;2~,
+ kf25=\E[1;5P,
+ kf26=\E[1;5Q,
+ kf27=\E[1;5R,
+ kf28=\E[1;5S,
+ kf29=\E[15;5~,
+ kf30=\E[17;5~,
+ kf31=\E[18;5~,
+ kf32=\E[19;5~,
+ kf33=\E[20;5~,
+ kf34=\E[21;5~,
+ kf35=\E[23;5~,
+ kf36=\E[24;5~,
+ kf37=\E[1;6P,
+ kf38=\E[1;6Q,
+ kf39=\E[1;6R,
+ kf40=\E[1;6S,
+ kf41=\E[15;6~,
+ kf42=\E[17;6~,
+ kf43=\E[18;6~,
+ kf44=\E[19;6~,
+ kf45=\E[20;6~,
+ kf46=\E[21;6~,
+ kf47=\E[23;6~,
+ kf48=\E[24;6~,
+ kf49=\E[1;3P,
+ kf50=\E[1;3Q,
+ kf51=\E[1;3R,
+ kf52=\E[1;3S,
+ kf53=\E[15;3~,
+ kf54=\E[17;3~,
+ kf55=\E[18;3~,
+ kf56=\E[19;3~,
+ kf57=\E[20;3~,
+ kf58=\E[21;3~,
+ kf59=\E[23;3~,
+ kf60=\E[24;3~,
+ kf61=\E[1;4P,
+ kf62=\E[1;4Q,
+ kf63=\E[1;4R,
+ khome=\E[1~,
+ kil1=\E[2;5~,
+ krmir=\E[2;2~,
+ knp=\E[6~,
+ kmous=\E[M,
+ kpp=\E[5~,
+ lines#24,
+ mir,
+ msgr,
+ npc,
+ op=\E[39;49m,
+ pairs#64,
+ mc0=\E[i,
+ mc4=\E[4i,
+ mc5=\E[5i,
+ rc=\E8,
+ rev=\E[7m,
+ ri=\EM,
+ rin=\E[%p1%dT,
+ ritm=\E[23m,
+ rmacs=\E(B,
+ rmcup=\E[?1049l,
+ rmir=\E[4l,
+ rmkx=\E[?1l\E>,
+ rmso=\E[27m,
+ rmul=\E[24m,
+ rs1=\Ec,
+ rs2=\E[4l\E>\E[?1034l,
+ sc=\E7,
+ sitm=\E[3m,
+ sgr0=\E[0m,
+ smacs=\E(0,
+ smcup=\E[?1049h,
+ smir=\E[4h,
+ smkx=\E[?1h\E=,
+ smso=\E[7m,
+ smul=\E[4m,
+ tbc=\E[3g,
+ tsl=\E]0;,
+ xenl,
+ vpa=\E[%i%p1%dd,
+# XTerm extensions
+ rmxx=\E[29m,
+ smxx=\E[9m,
+# disabled rep for now: causes some issues with older ncurses versions.
+# rep=%p1%c\E[%p2%{1}%-%db,
+# tmux extensions, see TERMINFO EXTENSIONS in tmux(1)
+ Tc,
+ Ms=\E]52;%p1%s;%p2%s\007,
+ Se=\E[2 q,
+ Ss=\E[%p1%d q,
+ Smulx=\E[4:%p1%dm,
+
+st| simpleterm,
+ use=st-mono,
+ colors#8,
+ setab=\E[4%p1%dm,
+ setaf=\E[3%p1%dm,
+ setb=\E[4%?%p1%{1}%=%t4%e%p1%{3}%=%t6%e%p1%{4}%=%t1%e%p1%{6}%=%t3%e%p1%d%;m,
+ setf=\E[3%?%p1%{1}%=%t4%e%p1%{3}%=%t6%e%p1%{4}%=%t1%e%p1%{6}%=%t3%e%p1%d%;m,
+ sgr=%?%p9%t\E(0%e\E(B%;\E[0%?%p6%t;1%;%?%p2%t;4%;%?%p1%p3%|%t;7%;%?%p4%t;5%;%?%p7%t;8%;m,
+
+st-256color| simpleterm with 256 colors,
+ use=st,
+ ccc,
+ colors#256,
+ oc=\E]104\007,
+ pairs#32767,
+# Nicked from xterm-256color
+ initc=\E]4;%p1%d;rgb\:%p2%{255}%*%{1000}%/%2.2X/%p3%{255}%*%{1000}%/%2.2X/%p4%{255}%*%{1000}%/%2.2X\E\\,
+ setab=\E[%?%p1%{8}%<%t4%p1%d%e%p1%{16}%<%t10%p1%{8}%-%d%e48;5;%p1%d%;m,
+ setaf=\E[%?%p1%{8}%<%t3%p1%d%e%p1%{16}%<%t9%p1%{8}%-%d%e38;5;%p1%d%;m,
+# Underline colors
+ Su,
+ Setulc=\E[58:2:%p1%{65536}%/%d:%p1%{256}%/%{255}%&%d:%p1%{255}%&%d%;m,
+ Setulc1=\E[58:5:%p1%dm,
+ ol=\E[59m,
+
+st-meta| simpleterm with meta key,
+ use=st,
+ km,
+ rmm=\E[?1034l,
+ smm=\E[?1034h,
+ rs2=\E[4l\E>\E[?1034h,
+ is2=\E[4l\E>\E[?1034h,
+
+st-meta-256color| simpleterm with meta key and 256 colors,
+ use=st-256color,
+ km,
+ rmm=\E[?1034l,
+ smm=\E[?1034h,
+ rs2=\E[4l\E>\E[?1034h,
+ is2=\E[4l\E>\E[?1034h,
+
+st-bs| simpleterm with backspace as backspace,
+ use=st,
+ kbs=\010,
+ kdch1=\177,
+
+st-bs-256color| simpleterm with backspace as backspace and 256colors,
+ use=st-256color,
+ kbs=\010,
+ kdch1=\177,
diff --git a/st/st.info.orig b/st/st.info.orig
@@ -0,0 +1,239 @@
+st-mono| simpleterm monocolor,
+ acsc=+C\,D-A.B0E``aaffgghFiGjjkkllmmnnooppqqrrssttuuvvwwxxyyzz{{||}}~~,
+ am,
+ bce,
+ bel=^G,
+ blink=\E[5m,
+ bold=\E[1m,
+ cbt=\E[Z,
+ cvvis=\E[?25h,
+ civis=\E[?25l,
+ clear=\E[H\E[2J,
+ cnorm=\E[?12l\E[?25h,
+ colors#2,
+ cols#80,
+ cr=^M,
+ csr=\E[%i%p1%d;%p2%dr,
+ cub=\E[%p1%dD,
+ cub1=^H,
+ cud1=^J,
+ cud=\E[%p1%dB,
+ cuf1=\E[C,
+ cuf=\E[%p1%dC,
+ cup=\E[%i%p1%d;%p2%dH,
+ cuu1=\E[A,
+ cuu=\E[%p1%dA,
+ dch=\E[%p1%dP,
+ dch1=\E[P,
+ dim=\E[2m,
+ dl=\E[%p1%dM,
+ dl1=\E[M,
+ ech=\E[%p1%dX,
+ ed=\E[J,
+ el=\E[K,
+ el1=\E[1K,
+ enacs=\E)0,
+ flash=\E[?5h$<80/>\E[?5l,
+ fsl=^G,
+ home=\E[H,
+ hpa=\E[%i%p1%dG,
+ hs,
+ ht=^I,
+ hts=\EH,
+ ich=\E[%p1%d@,
+ il1=\E[L,
+ il=\E[%p1%dL,
+ ind=^J,
+ indn=\E[%p1%dS,
+ invis=\E[8m,
+ is2=\E[4l\E>\E[?1034l,
+ it#8,
+ kel=\E[1;2F,
+ ked=\E[1;5F,
+ ka1=\E[1~,
+ ka3=\E[5~,
+ kc1=\E[4~,
+ kc3=\E[6~,
+ kbs=\177,
+ kcbt=\E[Z,
+ kb2=\EOu,
+ kcub1=\EOD,
+ kcud1=\EOB,
+ kcuf1=\EOC,
+ kcuu1=\EOA,
+ kDC=\E[3;2~,
+ kent=\EOM,
+ kEND=\E[1;2F,
+ kIC=\E[2;2~,
+ kNXT=\E[6;2~,
+ kPRV=\E[5;2~,
+ kHOM=\E[1;2H,
+ kLFT=\E[1;2D,
+ kRIT=\E[1;2C,
+ kind=\E[1;2B,
+ kri=\E[1;2A,
+ kclr=\E[3;5~,
+ kdl1=\E[3;2~,
+ kdch1=\E[3~,
+ kich1=\E[2~,
+ kend=\E[4~,
+ kf1=\EOP,
+ kf2=\EOQ,
+ kf3=\EOR,
+ kf4=\EOS,
+ kf5=\E[15~,
+ kf6=\E[17~,
+ kf7=\E[18~,
+ kf8=\E[19~,
+ kf9=\E[20~,
+ kf10=\E[21~,
+ kf11=\E[23~,
+ kf12=\E[24~,
+ kf13=\E[1;2P,
+ kf14=\E[1;2Q,
+ kf15=\E[1;2R,
+ kf16=\E[1;2S,
+ kf17=\E[15;2~,
+ kf18=\E[17;2~,
+ kf19=\E[18;2~,
+ kf20=\E[19;2~,
+ kf21=\E[20;2~,
+ kf22=\E[21;2~,
+ kf23=\E[23;2~,
+ kf24=\E[24;2~,
+ kf25=\E[1;5P,
+ kf26=\E[1;5Q,
+ kf27=\E[1;5R,
+ kf28=\E[1;5S,
+ kf29=\E[15;5~,
+ kf30=\E[17;5~,
+ kf31=\E[18;5~,
+ kf32=\E[19;5~,
+ kf33=\E[20;5~,
+ kf34=\E[21;5~,
+ kf35=\E[23;5~,
+ kf36=\E[24;5~,
+ kf37=\E[1;6P,
+ kf38=\E[1;6Q,
+ kf39=\E[1;6R,
+ kf40=\E[1;6S,
+ kf41=\E[15;6~,
+ kf42=\E[17;6~,
+ kf43=\E[18;6~,
+ kf44=\E[19;6~,
+ kf45=\E[20;6~,
+ kf46=\E[21;6~,
+ kf47=\E[23;6~,
+ kf48=\E[24;6~,
+ kf49=\E[1;3P,
+ kf50=\E[1;3Q,
+ kf51=\E[1;3R,
+ kf52=\E[1;3S,
+ kf53=\E[15;3~,
+ kf54=\E[17;3~,
+ kf55=\E[18;3~,
+ kf56=\E[19;3~,
+ kf57=\E[20;3~,
+ kf58=\E[21;3~,
+ kf59=\E[23;3~,
+ kf60=\E[24;3~,
+ kf61=\E[1;4P,
+ kf62=\E[1;4Q,
+ kf63=\E[1;4R,
+ khome=\E[1~,
+ kil1=\E[2;5~,
+ krmir=\E[2;2~,
+ knp=\E[6~,
+ kmous=\E[M,
+ kpp=\E[5~,
+ lines#24,
+ mir,
+ msgr,
+ npc,
+ op=\E[39;49m,
+ pairs#64,
+ mc0=\E[i,
+ mc4=\E[4i,
+ mc5=\E[5i,
+ rc=\E8,
+ rev=\E[7m,
+ ri=\EM,
+ rin=\E[%p1%dT,
+ ritm=\E[23m,
+ rmacs=\E(B,
+ rmcup=\E[?1049l,
+ rmir=\E[4l,
+ rmkx=\E[?1l\E>,
+ rmso=\E[27m,
+ rmul=\E[24m,
+ rs1=\Ec,
+ rs2=\E[4l\E>\E[?1034l,
+ sc=\E7,
+ sitm=\E[3m,
+ sgr0=\E[0m,
+ smacs=\E(0,
+ smcup=\E[?1049h,
+ smir=\E[4h,
+ smkx=\E[?1h\E=,
+ smso=\E[7m,
+ smul=\E[4m,
+ tbc=\E[3g,
+ tsl=\E]0;,
+ xenl,
+ vpa=\E[%i%p1%dd,
+# XTerm extensions
+ rmxx=\E[29m,
+ smxx=\E[9m,
+# disabled rep for now: causes some issues with older ncurses versions.
+# rep=%p1%c\E[%p2%{1}%-%db,
+# tmux extensions, see TERMINFO EXTENSIONS in tmux(1)
+ Tc,
+ Ms=\E]52;%p1%s;%p2%s\007,
+ Se=\E[2 q,
+ Ss=\E[%p1%d q,
+
+st| simpleterm,
+ use=st-mono,
+ colors#8,
+ setab=\E[4%p1%dm,
+ setaf=\E[3%p1%dm,
+ setb=\E[4%?%p1%{1}%=%t4%e%p1%{3}%=%t6%e%p1%{4}%=%t1%e%p1%{6}%=%t3%e%p1%d%;m,
+ setf=\E[3%?%p1%{1}%=%t4%e%p1%{3}%=%t6%e%p1%{4}%=%t1%e%p1%{6}%=%t3%e%p1%d%;m,
+ sgr=%?%p9%t\E(0%e\E(B%;\E[0%?%p6%t;1%;%?%p2%t;4%;%?%p1%p3%|%t;7%;%?%p4%t;5%;%?%p7%t;8%;m,
+
+st-256color| simpleterm with 256 colors,
+ use=st,
+ ccc,
+ colors#256,
+ oc=\E]104\007,
+ pairs#32767,
+# Nicked from xterm-256color
+ initc=\E]4;%p1%d;rgb\:%p2%{255}%*%{1000}%/%2.2X/%p3%{255}%*%{1000}%/%2.2X/%p4%{255}%*%{1000}%/%2.2X\E\\,
+ setab=\E[%?%p1%{8}%<%t4%p1%d%e%p1%{16}%<%t10%p1%{8}%-%d%e48;5;%p1%d%;m,
+ setaf=\E[%?%p1%{8}%<%t3%p1%d%e%p1%{16}%<%t9%p1%{8}%-%d%e38;5;%p1%d%;m,
+
+st-meta| simpleterm with meta key,
+ use=st,
+ km,
+ rmm=\E[?1034l,
+ smm=\E[?1034h,
+ rs2=\E[4l\E>\E[?1034h,
+ is2=\E[4l\E>\E[?1034h,
+
+st-meta-256color| simpleterm with meta key and 256 colors,
+ use=st-256color,
+ km,
+ rmm=\E[?1034l,
+ smm=\E[?1034h,
+ rs2=\E[4l\E>\E[?1034h,
+ is2=\E[4l\E>\E[?1034h,
+
+st-bs| simpleterm with backspace as backspace,
+ use=st,
+ kbs=\010,
+ kdch1=\177,
+
+st-bs-256color| simpleterm with backspace as backspace and 256colors,
+ use=st-256color,
+ kbs=\010,
+ kdch1=\177,
diff --git a/st/st.o b/st/st.o
Binary files differ.
diff --git a/st/win.h b/st/win.h
@@ -0,0 +1,44 @@
+/* See LICENSE for license details. */
+
+enum win_mode {
+ MODE_VISIBLE = 1 << 0,
+ MODE_FOCUSED = 1 << 1,
+ MODE_APPKEYPAD = 1 << 2,
+ MODE_MOUSEBTN = 1 << 3,
+ MODE_MOUSEMOTION = 1 << 4,
+ MODE_REVERSE = 1 << 5,
+ MODE_KBDLOCK = 1 << 6,
+ MODE_HIDE = 1 << 7,
+ MODE_APPCURSOR = 1 << 8,
+ MODE_MOUSESGR = 1 << 9,
+ MODE_8BIT = 1 << 10,
+ MODE_BLINK = 1 << 11,
+ MODE_FBLINK = 1 << 12,
+ MODE_FOCUS = 1 << 13,
+ MODE_MOUSEX10 = 1 << 14,
+ MODE_MOUSEMANY = 1 << 15,
+ MODE_BRCKTPASTE = 1 << 16,
+ MODE_NUMLOCK = 1 << 17,
+ MODE_MOUSE = MODE_MOUSEBTN|MODE_MOUSEMOTION|MODE_MOUSEX10\
+ |MODE_MOUSEMANY,
+};
+
+void xbell(void);
+void xclipcopy(void);
+void xdrawcursor(int, int, Glyph, int, int, Glyph);
+void xdrawline(Line, int, int, int);
+void xfinishdraw(void);
+void xloadcols(void);
+int xsetcolorname(int, const char *);
+int xgetcolor(int, unsigned char *, unsigned char *, unsigned char *);
+void xseticontitle(char *);
+void xsettitle(char *);
+int xsetcursor(int);
+void xsetmode(int, unsigned int);
+void xsetpointermotion(int);
+void xsetsel(char *);
+int xstartdraw(void);
+void xximspot(int, int);
+
+void xstartimagedraw(int *dirty, int rows);
+void xfinishimagedraw();
diff --git a/st/x.c b/st/x.c
@@ -0,0 +1,2438 @@
+/* See LICENSE for license details. */
+#include <errno.h>
+#include <math.h>
+#include <limits.h>
+#include <locale.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/select.h>
+#include <time.h>
+#include <unistd.h>
+#include <libgen.h>
+#include <X11/Xatom.h>
+#include <X11/Xlib.h>
+#include <X11/cursorfont.h>
+#include <X11/keysym.h>
+#include <X11/Xft/Xft.h>
+#include <X11/XKBlib.h>
+
+char *argv0;
+#include "arg.h"
+#include "st.h"
+#include "win.h"
+#include "graphics.h"
+
+/* types used in config.h */
+typedef struct {
+ uint mod;
+ KeySym keysym;
+ void (*func)(const Arg *);
+ const Arg arg;
+} Shortcut;
+
+typedef struct {
+ uint mod;
+ uint button;
+ void (*func)(const Arg *);
+ const Arg arg;
+ uint release;
+} MouseShortcut;
+
+typedef struct {
+ KeySym k;
+ uint mask;
+ char *s;
+ /* three-valued logic variables: 0 indifferent, 1 on, -1 off */
+ signed char appkey; /* application keypad */
+ signed char appcursor; /* application cursor */
+} Key;
+
+/* X modifiers */
+#define XK_ANY_MOD UINT_MAX
+#define XK_NO_MOD 0
+#define XK_SWITCH_MOD (1<<13|1<<14)
+
+/* function definitions used in config.h */
+static void clipcopy(const Arg *);
+static void clippaste(const Arg *);
+static void numlock(const Arg *);
+static void selpaste(const Arg *);
+static void zoom(const Arg *);
+static void zoomabs(const Arg *);
+static void zoomreset(const Arg *);
+static void ttysend(const Arg *);
+static void previewimage(const Arg *);
+static void showimageinfo(const Arg *);
+static void togglegrdebug(const Arg *);
+static void dumpgrstate(const Arg *);
+static void unloadimages(const Arg *);
+static void toggleimages(const Arg *);
+
+/* config.h for applying patches and the configuration. */
+#include "config.h"
+
+/* XEMBED messages */
+#define XEMBED_FOCUS_IN 4
+#define XEMBED_FOCUS_OUT 5
+
+/* macros */
+#define IS_SET(flag) ((win.mode & (flag)) != 0)
+#define TRUERED(x) (((x) & 0xff0000) >> 8)
+#define TRUEGREEN(x) (((x) & 0xff00))
+#define TRUEBLUE(x) (((x) & 0xff) << 8)
+
+typedef XftDraw *Draw;
+typedef XftColor Color;
+typedef XftGlyphFontSpec GlyphFontSpec;
+
+/* Purely graphic info */
+typedef struct {
+ int tw, th; /* tty width and height */
+ int w, h; /* window width and height */
+ int hborderpx, vborderpx;
+ int ch; /* char height */
+ int cw; /* char width */
+ int mode; /* window state/mode flags */
+ int cursor; /* cursor style */
+} TermWindow;
+
+typedef struct {
+ Display *dpy;
+ Colormap cmap;
+ Window win;
+ Drawable buf;
+ GlyphFontSpec *specbuf; /* font spec buffer used for rendering */
+ Atom xembed, wmdeletewin, netwmname, netwmiconname, netwmpid;
+ struct {
+ XIM xim;
+ XIC xic;
+ XPoint spot;
+ XVaNestedList spotlist;
+ } ime;
+ Draw draw;
+ Visual *vis;
+ XSetWindowAttributes attrs;
+ int scr;
+ int isfixed; /* is fixed geometry? */
+ int l, t; /* left and top offset */
+ int gm; /* geometry mask */
+} XWindow;
+
+typedef struct {
+ Atom xtarget;
+ char *primary, *clipboard;
+ struct timespec tclick1;
+ struct timespec tclick2;
+} XSelection;
+
+/* Font structure */
+#define Font Font_
+typedef struct {
+ int height;
+ int width;
+ int ascent;
+ int descent;
+ int badslant;
+ int badweight;
+ short lbearing;
+ short rbearing;
+ XftFont *match;
+ FcFontSet *set;
+ FcPattern *pattern;
+} Font;
+
+/* Drawing Context */
+typedef struct {
+ Color *col;
+ size_t collen;
+ Font font, bfont, ifont, ibfont;
+ GC gc;
+} DC;
+
+static inline ushort sixd_to_16bit(int);
+static int xmakeglyphfontspecs(XftGlyphFontSpec *, const Glyph *, int, int, int);
+static void xdrawglyphfontspecs(const XftGlyphFontSpec *, Glyph, int, int, int);
+static void xdrawglyph(Glyph, int, int);
+static void xdrawimages(Glyph, Line, int x1, int y1, int x2);
+static void xdrawoneimagecell(Glyph, int x, int y);
+static void xclear(int, int, int, int);
+static int xgeommasktogravity(int);
+static int ximopen(Display *);
+static void ximinstantiate(Display *, XPointer, XPointer);
+static void ximdestroy(XIM, XPointer, XPointer);
+static int xicdestroy(XIC, XPointer, XPointer);
+static void xinit(int, int);
+static void cresize(int, int);
+static void xresize(int, int);
+static void xhints(void);
+static int xloadcolor(int, const char *, Color *);
+static int xloadfont(Font *, FcPattern *);
+static void xloadfonts(const char *, double);
+static void xunloadfont(Font *);
+static void xunloadfonts(void);
+static void xsetenv(void);
+static void xseturgency(int);
+static int evcol(XEvent *);
+static int evrow(XEvent *);
+
+static void expose(XEvent *);
+static void visibility(XEvent *);
+static void unmap(XEvent *);
+static void kpress(XEvent *);
+static void cmessage(XEvent *);
+static void resize(XEvent *);
+static void focus(XEvent *);
+static uint buttonmask(uint);
+static int mouseaction(XEvent *, uint);
+static void brelease(XEvent *);
+static void bpress(XEvent *);
+static void bmotion(XEvent *);
+static void propnotify(XEvent *);
+static void selnotify(XEvent *);
+static void selclear_(XEvent *);
+static void selrequest(XEvent *);
+static void setsel(char *, Time);
+static void mousesel(XEvent *, int);
+static void mousereport(XEvent *);
+static char *kmap(KeySym, uint);
+static int match(uint, uint);
+
+static void run(void);
+static void usage(void);
+
+static void (*handler[LASTEvent])(XEvent *) = {
+ [KeyPress] = kpress,
+ [ClientMessage] = cmessage,
+ [ConfigureNotify] = resize,
+ [VisibilityNotify] = visibility,
+ [UnmapNotify] = unmap,
+ [Expose] = expose,
+ [FocusIn] = focus,
+ [FocusOut] = focus,
+ [MotionNotify] = bmotion,
+ [ButtonPress] = bpress,
+ [ButtonRelease] = brelease,
+/*
+ * Uncomment if you want the selection to disappear when you select something
+ * different in another window.
+ */
+/* [SelectionClear] = selclear_, */
+ [SelectionNotify] = selnotify,
+/*
+ * PropertyNotify is only turned on when there is some INCR transfer happening
+ * for the selection retrieval.
+ */
+ [PropertyNotify] = propnotify,
+ [SelectionRequest] = selrequest,
+};
+
+/* Globals */
+static DC dc;
+static XWindow xw;
+static XSelection xsel;
+static TermWindow win;
+static unsigned int mouse_col = 0, mouse_row = 0;
+
+/* Font Ring Cache */
+enum {
+ FRC_NORMAL,
+ FRC_ITALIC,
+ FRC_BOLD,
+ FRC_ITALICBOLD
+};
+
+typedef struct {
+ XftFont *font;
+ int flags;
+ Rune unicodep;
+} Fontcache;
+
+/* Fontcache is an array now. A new font will be appended to the array. */
+static Fontcache *frc = NULL;
+static int frclen = 0;
+static int frccap = 0;
+static char *usedfont = NULL;
+static double usedfontsize = 0;
+static double defaultfontsize = 0;
+
+static char *opt_class = NULL;
+static char **opt_cmd = NULL;
+static char *opt_embed = NULL;
+static char *opt_font = NULL;
+static char *opt_io = NULL;
+static char *opt_line = NULL;
+static char *opt_name = NULL;
+static char *opt_title = NULL;
+
+static uint buttons; /* bit field of pressed buttons */
+
+void
+clipcopy(const Arg *dummy)
+{
+ Atom clipboard;
+
+ free(xsel.clipboard);
+ xsel.clipboard = NULL;
+
+ if (xsel.primary != NULL) {
+ xsel.clipboard = xstrdup(xsel.primary);
+ clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
+ XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
+ }
+}
+
+void
+clippaste(const Arg *dummy)
+{
+ Atom clipboard;
+
+ clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
+ XConvertSelection(xw.dpy, clipboard, xsel.xtarget, clipboard,
+ xw.win, CurrentTime);
+}
+
+void
+selpaste(const Arg *dummy)
+{
+ XConvertSelection(xw.dpy, XA_PRIMARY, xsel.xtarget, XA_PRIMARY,
+ xw.win, CurrentTime);
+}
+
+void
+numlock(const Arg *dummy)
+{
+ win.mode ^= MODE_NUMLOCK;
+}
+
+void
+zoom(const Arg *arg)
+{
+ Arg larg;
+
+ larg.f = usedfontsize + arg->f;
+ zoomabs(&larg);
+}
+
+void
+zoomabs(const Arg *arg)
+{
+ xunloadfonts();
+ xloadfonts(usedfont, arg->f);
+ cresize(0, 0);
+ redraw();
+ xhints();
+}
+
+void
+zoomreset(const Arg *arg)
+{
+ Arg larg;
+
+ if (defaultfontsize > 0) {
+ larg.f = defaultfontsize;
+ zoomabs(&larg);
+ }
+}
+
+void
+ttysend(const Arg *arg)
+{
+ ttywrite(arg->s, strlen(arg->s), 1);
+}
+
+void
+previewimage(const Arg *arg)
+{
+ Glyph g = getglyphat(mouse_col, mouse_row);
+ if (g.mode & ATTR_IMAGE) {
+ uint32_t image_id = tgetimgid(&g);
+ fprintf(stderr, "Clicked on placeholder %u/%u, x=%d, y=%d\n",
+ image_id, tgetimgplacementid(&g), tgetimgcol(&g),
+ tgetimgrow(&g));
+ gr_preview_image(image_id, arg->s);
+ }
+}
+
+void
+showimageinfo(const Arg *arg)
+{
+ Glyph g = getglyphat(mouse_col, mouse_row);
+ if (g.mode & ATTR_IMAGE) {
+ uint32_t image_id = tgetimgid(&g);
+ fprintf(stderr, "Clicked on placeholder %u/%u, x=%d, y=%d\n",
+ image_id, tgetimgplacementid(&g), tgetimgcol(&g),
+ tgetimgrow(&g));
+ char stcommand[256] = {0};
+ size_t len = snprintf(stcommand, sizeof(stcommand), "%s -e less", argv0);
+ if (len > sizeof(stcommand) - 1) {
+ fprintf(stderr, "Executable name too long: %s\n",
+ argv0);
+ return;
+ }
+ gr_show_image_info(image_id, tgetimgplacementid(&g),
+ tgetimgcol(&g), tgetimgrow(&g),
+ tgetisclassicplaceholder(&g),
+ tgetimgdiacriticcount(&g), argv0);
+ }
+}
+
+void
+togglegrdebug(const Arg *arg)
+{
+ graphics_debug_mode = (graphics_debug_mode + 1) % 3;
+ redraw();
+}
+
+void
+dumpgrstate(const Arg *arg)
+{
+ gr_dump_state();
+}
+
+void
+unloadimages(const Arg *arg)
+{
+ gr_unload_images_to_reduce_ram();
+}
+
+void
+toggleimages(const Arg *arg)
+{
+ graphics_display_images = !graphics_display_images;
+ redraw();
+}
+
+int
+evcol(XEvent *e)
+{
+ int x = e->xbutton.x - win.hborderpx;
+ LIMIT(x, 0, win.tw - 1);
+ return x / win.cw;
+}
+
+int
+evrow(XEvent *e)
+{
+ int y = e->xbutton.y - win.vborderpx;
+ LIMIT(y, 0, win.th - 1);
+ return y / win.ch;
+}
+
+void
+mousesel(XEvent *e, int done)
+{
+ int type, seltype = SEL_REGULAR;
+ uint state = e->xbutton.state & ~(Button1Mask | forcemousemod);
+
+ for (type = 1; type < LEN(selmasks); ++type) {
+ if (match(selmasks[type], state)) {
+ seltype = type;
+ break;
+ }
+ }
+ selextend(evcol(e), evrow(e), seltype, done);
+ if (done)
+ setsel(getsel(), e->xbutton.time);
+}
+
+void
+mousereport(XEvent *e)
+{
+ int len, btn, code;
+ int x = evcol(e), y = evrow(e);
+ int state = e->xbutton.state;
+ char buf[40];
+ static int ox, oy;
+
+ if (e->type == MotionNotify) {
+ if (x == ox && y == oy)
+ return;
+ if (!IS_SET(MODE_MOUSEMOTION) && !IS_SET(MODE_MOUSEMANY))
+ return;
+ /* MODE_MOUSEMOTION: no reporting if no button is pressed */
+ if (IS_SET(MODE_MOUSEMOTION) && buttons == 0)
+ return;
+ /* Set btn to lowest-numbered pressed button, or 12 if no
+ * buttons are pressed. */
+ for (btn = 1; btn <= 11 && !(buttons & (1<<(btn-1))); btn++)
+ ;
+ code = 32;
+ } else {
+ btn = e->xbutton.button;
+ /* Only buttons 1 through 11 can be encoded */
+ if (btn < 1 || btn > 11)
+ return;
+ if (e->type == ButtonRelease) {
+ /* MODE_MOUSEX10: no button release reporting */
+ if (IS_SET(MODE_MOUSEX10))
+ return;
+ /* Don't send release events for the scroll wheel */
+ if (btn == 4 || btn == 5)
+ return;
+ }
+ code = 0;
+ }
+
+ ox = x;
+ oy = y;
+
+ /* Encode btn into code. If no button is pressed for a motion event in
+ * MODE_MOUSEMANY, then encode it as a release. */
+ if ((!IS_SET(MODE_MOUSESGR) && e->type == ButtonRelease) || btn == 12)
+ code += 3;
+ else if (btn >= 8)
+ code += 128 + btn - 8;
+ else if (btn >= 4)
+ code += 64 + btn - 4;
+ else
+ code += btn - 1;
+
+ if (!IS_SET(MODE_MOUSEX10)) {
+ code += ((state & ShiftMask ) ? 4 : 0)
+ + ((state & Mod1Mask ) ? 8 : 0) /* meta key: alt */
+ + ((state & ControlMask) ? 16 : 0);
+ }
+
+ if (IS_SET(MODE_MOUSESGR)) {
+ len = snprintf(buf, sizeof(buf), "\033[<%d;%d;%d%c",
+ code, x+1, y+1,
+ e->type == ButtonRelease ? 'm' : 'M');
+ } else if (x < 223 && y < 223) {
+ len = snprintf(buf, sizeof(buf), "\033[M%c%c%c",
+ 32+code, 32+x+1, 32+y+1);
+ } else {
+ return;
+ }
+
+ ttywrite(buf, len, 0);
+}
+
+uint
+buttonmask(uint button)
+{
+ return button == Button1 ? Button1Mask
+ : button == Button2 ? Button2Mask
+ : button == Button3 ? Button3Mask
+ : button == Button4 ? Button4Mask
+ : button == Button5 ? Button5Mask
+ : 0;
+}
+
+int
+mouseaction(XEvent *e, uint release)
+{
+ MouseShortcut *ms;
+
+ /* ignore Button<N>mask for Button<N> - it's set on release */
+ uint state = e->xbutton.state & ~buttonmask(e->xbutton.button);
+
+ mouse_col = evcol(e);
+ mouse_row = evrow(e);
+
+ for (ms = mshortcuts; ms < mshortcuts + LEN(mshortcuts); ms++) {
+ if (ms->release == release &&
+ ms->button == e->xbutton.button &&
+ (match(ms->mod, state) || /* exact or forced */
+ match(ms->mod, state & ~forcemousemod))) {
+ ms->func(&(ms->arg));
+ return 1;
+ }
+ }
+
+ return 0;
+}
+
+void
+bpress(XEvent *e)
+{
+ int btn = e->xbutton.button;
+ struct timespec now;
+ int snap;
+
+ if (1 <= btn && btn <= 11)
+ buttons |= 1 << (btn-1);
+
+ if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forcemousemod)) {
+ mousereport(e);
+ return;
+ }
+
+ if (mouseaction(e, 0))
+ return;
+
+ if (btn == Button1) {
+ /*
+ * If the user clicks below predefined timeouts specific
+ * snapping behaviour is exposed.
+ */
+ clock_gettime(CLOCK_MONOTONIC, &now);
+ if (TIMEDIFF(now, xsel.tclick2) <= tripleclicktimeout) {
+ snap = SNAP_LINE;
+ } else if (TIMEDIFF(now, xsel.tclick1) <= doubleclicktimeout) {
+ snap = SNAP_WORD;
+ } else {
+ snap = 0;
+ }
+ xsel.tclick2 = xsel.tclick1;
+ xsel.tclick1 = now;
+
+ selstart(evcol(e), evrow(e), snap);
+ }
+}
+
+void
+propnotify(XEvent *e)
+{
+ XPropertyEvent *xpev;
+ Atom clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
+
+ xpev = &e->xproperty;
+ if (xpev->state == PropertyNewValue &&
+ (xpev->atom == XA_PRIMARY ||
+ xpev->atom == clipboard)) {
+ selnotify(e);
+ }
+}
+
+void
+selnotify(XEvent *e)
+{
+ ulong nitems, ofs, rem;
+ int format;
+ uchar *data, *last, *repl;
+ Atom type, incratom, property = None;
+
+ incratom = XInternAtom(xw.dpy, "INCR", 0);
+
+ ofs = 0;
+ if (e->type == SelectionNotify)
+ property = e->xselection.property;
+ else if (e->type == PropertyNotify)
+ property = e->xproperty.atom;
+
+ if (property == None)
+ return;
+
+ do {
+ if (XGetWindowProperty(xw.dpy, xw.win, property, ofs,
+ BUFSIZ/4, False, AnyPropertyType,
+ &type, &format, &nitems, &rem,
+ &data)) {
+ fprintf(stderr, "Clipboard allocation failed\n");
+ return;
+ }
+
+ if (e->type == PropertyNotify && nitems == 0 && rem == 0) {
+ /*
+ * If there is some PropertyNotify with no data, then
+ * this is the signal of the selection owner that all
+ * data has been transferred. We won't need to receive
+ * PropertyNotify events anymore.
+ */
+ MODBIT(xw.attrs.event_mask, 0, PropertyChangeMask);
+ XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask,
+ &xw.attrs);
+ }
+
+ if (type == incratom) {
+ /*
+ * Activate the PropertyNotify events so we receive
+ * when the selection owner does send us the next
+ * chunk of data.
+ */
+ MODBIT(xw.attrs.event_mask, 1, PropertyChangeMask);
+ XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask,
+ &xw.attrs);
+
+ /*
+ * Deleting the property is the transfer start signal.
+ */
+ XDeleteProperty(xw.dpy, xw.win, (int)property);
+ continue;
+ }
+
+ /*
+ * As seen in getsel:
+ * Line endings are inconsistent in the terminal and GUI world
+ * copy and pasting. When receiving some selection data,
+ * replace all '\n' with '\r'.
+ * FIXME: Fix the computer world.
+ */
+ repl = data;
+ last = data + nitems * format / 8;
+ while ((repl = memchr(repl, '\n', last - repl))) {
+ *repl++ = '\r';
+ }
+
+ if (IS_SET(MODE_BRCKTPASTE) && ofs == 0)
+ ttywrite("\033[200~", 6, 0);
+ ttywrite((char *)data, nitems * format / 8, 1);
+ if (IS_SET(MODE_BRCKTPASTE) && rem == 0)
+ ttywrite("\033[201~", 6, 0);
+ XFree(data);
+ /* number of 32-bit chunks returned */
+ ofs += nitems * format / 32;
+ } while (rem > 0);
+
+ /*
+ * Deleting the property again tells the selection owner to send the
+ * next data chunk in the property.
+ */
+ XDeleteProperty(xw.dpy, xw.win, (int)property);
+}
+
+void
+xclipcopy(void)
+{
+ clipcopy(NULL);
+}
+
+void
+selclear_(XEvent *e)
+{
+ selclear();
+}
+
+void
+selrequest(XEvent *e)
+{
+ XSelectionRequestEvent *xsre;
+ XSelectionEvent xev;
+ Atom xa_targets, string, clipboard;
+ char *seltext;
+
+ xsre = (XSelectionRequestEvent *) e;
+ xev.type = SelectionNotify;
+ xev.requestor = xsre->requestor;
+ xev.selection = xsre->selection;
+ xev.target = xsre->target;
+ xev.time = xsre->time;
+ if (xsre->property == None)
+ xsre->property = xsre->target;
+
+ /* reject */
+ xev.property = None;
+
+ xa_targets = XInternAtom(xw.dpy, "TARGETS", 0);
+ if (xsre->target == xa_targets) {
+ /* respond with the supported type */
+ string = xsel.xtarget;
+ XChangeProperty(xsre->display, xsre->requestor, xsre->property,
+ XA_ATOM, 32, PropModeReplace,
+ (uchar *) &string, 1);
+ xev.property = xsre->property;
+ } else if (xsre->target == xsel.xtarget || xsre->target == XA_STRING) {
+ /*
+ * xith XA_STRING non ascii characters may be incorrect in the
+ * requestor. It is not our problem, use utf8.
+ */
+ clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
+ if (xsre->selection == XA_PRIMARY) {
+ seltext = xsel.primary;
+ } else if (xsre->selection == clipboard) {
+ seltext = xsel.clipboard;
+ } else {
+ fprintf(stderr,
+ "Unhandled clipboard selection 0x%lx\n",
+ xsre->selection);
+ return;
+ }
+ if (seltext != NULL) {
+ XChangeProperty(xsre->display, xsre->requestor,
+ xsre->property, xsre->target,
+ 8, PropModeReplace,
+ (uchar *)seltext, strlen(seltext));
+ xev.property = xsre->property;
+ }
+ }
+
+ /* all done, send a notification to the listener */
+ if (!XSendEvent(xsre->display, xsre->requestor, 1, 0, (XEvent *) &xev))
+ fprintf(stderr, "Error sending SelectionNotify event\n");
+}
+
+void
+setsel(char *str, Time t)
+{
+ if (!str)
+ return;
+
+ free(xsel.primary);
+ xsel.primary = str;
+
+ XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, t);
+ if (XGetSelectionOwner(xw.dpy, XA_PRIMARY) != xw.win)
+ selclear();
+}
+
+void
+xsetsel(char *str)
+{
+ setsel(str, CurrentTime);
+}
+
+void
+brelease(XEvent *e)
+{
+ int btn = e->xbutton.button;
+
+ if (1 <= btn && btn <= 11)
+ buttons &= ~(1 << (btn-1));
+
+ if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forcemousemod)) {
+ mousereport(e);
+ return;
+ }
+
+ if (mouseaction(e, 1))
+ return;
+ if (btn == Button1)
+ mousesel(e, 1);
+}
+
+void
+bmotion(XEvent *e)
+{
+ if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forcemousemod)) {
+ mousereport(e);
+ return;
+ }
+
+ mousesel(e, 0);
+}
+
+void
+cresize(int width, int height)
+{
+ int col, row;
+
+ if (width != 0)
+ win.w = width;
+ if (height != 0)
+ win.h = height;
+
+ col = (win.w - 2 * borderpx) / win.cw;
+ row = (win.h - 2 * borderpx) / win.ch;
+ col = MAX(1, col);
+ row = MAX(1, row);
+
+ win.hborderpx = (win.w - col * win.cw) * anysize_halign / 100;
+ win.vborderpx = (win.h - row * win.ch) * anysize_valign / 100;
+
+ tresize(col, row);
+ xresize(col, row);
+ ttyresize(win.tw, win.th);
+}
+
+void
+xresize(int col, int row)
+{
+ win.tw = col * win.cw;
+ win.th = row * win.ch;
+
+ XFreePixmap(xw.dpy, xw.buf);
+ xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h,
+ DefaultDepth(xw.dpy, xw.scr));
+ XftDrawChange(xw.draw, xw.buf);
+ xclear(0, 0, win.w, win.h);
+
+ /* resize to new width */
+ xw.specbuf = xrealloc(xw.specbuf, col * sizeof(GlyphFontSpec));
+}
+
+ushort
+sixd_to_16bit(int x)
+{
+ return x == 0 ? 0 : 0x3737 + 0x2828 * x;
+}
+
+int
+xloadcolor(int i, const char *name, Color *ncolor)
+{
+ XRenderColor color = { .alpha = 0xffff };
+
+ if (!name) {
+ if (BETWEEN(i, 16, 255)) { /* 256 color */
+ if (i < 6*6*6+16) { /* same colors as xterm */
+ color.red = sixd_to_16bit( ((i-16)/36)%6 );
+ color.green = sixd_to_16bit( ((i-16)/6) %6 );
+ color.blue = sixd_to_16bit( ((i-16)/1) %6 );
+ } else { /* greyscale */
+ color.red = 0x0808 + 0x0a0a * (i - (6*6*6+16));
+ color.green = color.blue = color.red;
+ }
+ return XftColorAllocValue(xw.dpy, xw.vis,
+ xw.cmap, &color, ncolor);
+ } else
+ name = colorname[i];
+ }
+
+ return XftColorAllocName(xw.dpy, xw.vis, xw.cmap, name, ncolor);
+}
+
+void
+xloadcols(void)
+{
+ int i;
+ static int loaded;
+ Color *cp;
+
+ if (loaded) {
+ for (cp = dc.col; cp < &dc.col[dc.collen]; ++cp)
+ XftColorFree(xw.dpy, xw.vis, xw.cmap, cp);
+ } else {
+ dc.collen = MAX(LEN(colorname), 256);
+ dc.col = xmalloc(dc.collen * sizeof(Color));
+ }
+
+ for (i = 0; i < dc.collen; i++)
+ if (!xloadcolor(i, NULL, &dc.col[i])) {
+ if (colorname[i])
+ die("could not allocate color '%s'\n", colorname[i]);
+ else
+ die("could not allocate color %d\n", i);
+ }
+ loaded = 1;
+}
+
+int
+xgetcolor(int x, unsigned char *r, unsigned char *g, unsigned char *b)
+{
+ if (!BETWEEN(x, 0, dc.collen))
+ return 1;
+
+ *r = dc.col[x].color.red >> 8;
+ *g = dc.col[x].color.green >> 8;
+ *b = dc.col[x].color.blue >> 8;
+
+ return 0;
+}
+
+int
+xsetcolorname(int x, const char *name)
+{
+ Color ncolor;
+
+ if (!BETWEEN(x, 0, dc.collen))
+ return 1;
+
+ if (!xloadcolor(x, name, &ncolor))
+ return 1;
+
+ XftColorFree(xw.dpy, xw.vis, xw.cmap, &dc.col[x]);
+ dc.col[x] = ncolor;
+
+ return 0;
+}
+
+/*
+ * Absolute coordinates.
+ */
+void
+xclear(int x1, int y1, int x2, int y2)
+{
+ XftDrawRect(xw.draw,
+ &dc.col[IS_SET(MODE_REVERSE)? defaultfg : defaultbg],
+ x1, y1, x2-x1, y2-y1);
+}
+
+void
+xhints(void)
+{
+ XClassHint class = {opt_name ? opt_name : termname,
+ opt_class ? opt_class : termname};
+ XWMHints wm = {.flags = InputHint, .input = 1};
+ XSizeHints *sizeh;
+
+ sizeh = XAllocSizeHints();
+
+ sizeh->flags = PSize | PResizeInc | PBaseSize | PMinSize;
+ sizeh->height = win.h;
+ sizeh->width = win.w;
+ sizeh->height_inc = 1;
+ sizeh->width_inc = 1;
+ sizeh->base_height = 2 * borderpx;
+ sizeh->base_width = 2 * borderpx;
+ sizeh->min_height = win.ch + 2 * borderpx;
+ sizeh->min_width = win.cw + 2 * borderpx;
+ if (xw.isfixed) {
+ sizeh->flags |= PMaxSize;
+ sizeh->min_width = sizeh->max_width = win.w;
+ sizeh->min_height = sizeh->max_height = win.h;
+ }
+ if (xw.gm & (XValue|YValue)) {
+ sizeh->flags |= USPosition | PWinGravity;
+ sizeh->x = xw.l;
+ sizeh->y = xw.t;
+ sizeh->win_gravity = xgeommasktogravity(xw.gm);
+ }
+
+ XSetWMProperties(xw.dpy, xw.win, NULL, NULL, NULL, 0, sizeh, &wm,
+ &class);
+ XFree(sizeh);
+}
+
+int
+xgeommasktogravity(int mask)
+{
+ switch (mask & (XNegative|YNegative)) {
+ case 0:
+ return NorthWestGravity;
+ case XNegative:
+ return NorthEastGravity;
+ case YNegative:
+ return SouthWestGravity;
+ }
+
+ return SouthEastGravity;
+}
+
+int
+xloadfont(Font *f, FcPattern *pattern)
+{
+ FcPattern *configured;
+ FcPattern *match;
+ FcResult result;
+ XGlyphInfo extents;
+ int wantattr, haveattr;
+
+ /*
+ * Manually configure instead of calling XftMatchFont
+ * so that we can use the configured pattern for
+ * "missing glyph" lookups.
+ */
+ configured = FcPatternDuplicate(pattern);
+ if (!configured)
+ return 1;
+
+ FcConfigSubstitute(NULL, configured, FcMatchPattern);
+ XftDefaultSubstitute(xw.dpy, xw.scr, configured);
+
+ match = FcFontMatch(NULL, configured, &result);
+ if (!match) {
+ FcPatternDestroy(configured);
+ return 1;
+ }
+
+ if (!(f->match = XftFontOpenPattern(xw.dpy, match))) {
+ FcPatternDestroy(configured);
+ FcPatternDestroy(match);
+ return 1;
+ }
+
+ if ((XftPatternGetInteger(pattern, "slant", 0, &wantattr) ==
+ XftResultMatch)) {
+ /*
+ * Check if xft was unable to find a font with the appropriate
+ * slant but gave us one anyway. Try to mitigate.
+ */
+ if ((XftPatternGetInteger(f->match->pattern, "slant", 0,
+ &haveattr) != XftResultMatch) || haveattr < wantattr) {
+ f->badslant = 1;
+ fputs("font slant does not match\n", stderr);
+ }
+ }
+
+ if ((XftPatternGetInteger(pattern, "weight", 0, &wantattr) ==
+ XftResultMatch)) {
+ if ((XftPatternGetInteger(f->match->pattern, "weight", 0,
+ &haveattr) != XftResultMatch) || haveattr != wantattr) {
+ f->badweight = 1;
+ fputs("font weight does not match\n", stderr);
+ }
+ }
+
+ XftTextExtentsUtf8(xw.dpy, f->match,
+ (const FcChar8 *) ascii_printable,
+ strlen(ascii_printable), &extents);
+
+ f->set = NULL;
+ f->pattern = configured;
+
+ f->ascent = f->match->ascent;
+ f->descent = f->match->descent;
+ f->lbearing = 0;
+ f->rbearing = f->match->max_advance_width;
+
+ f->height = f->ascent + f->descent;
+ f->width = DIVCEIL(extents.xOff, strlen(ascii_printable));
+
+ return 0;
+}
+
+void
+xloadfonts(const char *fontstr, double fontsize)
+{
+ FcPattern *pattern;
+ double fontval;
+
+ if (fontstr[0] == '-')
+ pattern = XftXlfdParse(fontstr, False, False);
+ else
+ pattern = FcNameParse((const FcChar8 *)fontstr);
+
+ if (!pattern)
+ die("can't open font %s\n", fontstr);
+
+ if (fontsize > 1) {
+ FcPatternDel(pattern, FC_PIXEL_SIZE);
+ FcPatternDel(pattern, FC_SIZE);
+ FcPatternAddDouble(pattern, FC_PIXEL_SIZE, (double)fontsize);
+ usedfontsize = fontsize;
+ } else {
+ if (FcPatternGetDouble(pattern, FC_PIXEL_SIZE, 0, &fontval) ==
+ FcResultMatch) {
+ usedfontsize = fontval;
+ } else if (FcPatternGetDouble(pattern, FC_SIZE, 0, &fontval) ==
+ FcResultMatch) {
+ usedfontsize = -1;
+ } else {
+ /*
+ * Default font size is 12, if none given. This is to
+ * have a known usedfontsize value.
+ */
+ FcPatternAddDouble(pattern, FC_PIXEL_SIZE, 12);
+ usedfontsize = 12;
+ }
+ if (defaultfontsize <= 0)
+ defaultfontsize = usedfontsize;
+ }
+
+ if (xloadfont(&dc.font, pattern))
+ die("can't open font %s\n", fontstr);
+
+ if (usedfontsize < 0) {
+ FcPatternGetDouble(dc.font.match->pattern,
+ FC_PIXEL_SIZE, 0, &fontval);
+ usedfontsize = fontval;
+ if (defaultfontsize <= 0 && fontsize == 0)
+ defaultfontsize = fontval;
+ }
+
+ /* Setting character width and height. */
+ win.cw = ceilf(dc.font.width * cwscale);
+ win.ch = ceilf(dc.font.height * chscale);
+
+ FcPatternDel(pattern, FC_SLANT);
+ FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ITALIC);
+ if (xloadfont(&dc.ifont, pattern))
+ die("can't open font %s\n", fontstr);
+
+ FcPatternDel(pattern, FC_WEIGHT);
+ FcPatternAddInteger(pattern, FC_WEIGHT, FC_WEIGHT_BOLD);
+ if (xloadfont(&dc.ibfont, pattern))
+ die("can't open font %s\n", fontstr);
+
+ FcPatternDel(pattern, FC_SLANT);
+ FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ROMAN);
+ if (xloadfont(&dc.bfont, pattern))
+ die("can't open font %s\n", fontstr);
+
+ FcPatternDestroy(pattern);
+}
+
+void
+xunloadfont(Font *f)
+{
+ XftFontClose(xw.dpy, f->match);
+ FcPatternDestroy(f->pattern);
+ if (f->set)
+ FcFontSetDestroy(f->set);
+}
+
+void
+xunloadfonts(void)
+{
+ /* Free the loaded fonts in the font cache. */
+ while (frclen > 0)
+ XftFontClose(xw.dpy, frc[--frclen].font);
+
+ xunloadfont(&dc.font);
+ xunloadfont(&dc.bfont);
+ xunloadfont(&dc.ifont);
+ xunloadfont(&dc.ibfont);
+}
+
+int
+ximopen(Display *dpy)
+{
+ XIMCallback imdestroy = { .client_data = NULL, .callback = ximdestroy };
+ XICCallback icdestroy = { .client_data = NULL, .callback = xicdestroy };
+
+ xw.ime.xim = XOpenIM(xw.dpy, NULL, NULL, NULL);
+ if (xw.ime.xim == NULL)
+ return 0;
+
+ if (XSetIMValues(xw.ime.xim, XNDestroyCallback, &imdestroy, NULL))
+ fprintf(stderr, "XSetIMValues: "
+ "Could not set XNDestroyCallback.\n");
+
+ xw.ime.spotlist = XVaCreateNestedList(0, XNSpotLocation, &xw.ime.spot,
+ NULL);
+
+ if (xw.ime.xic == NULL) {
+ xw.ime.xic = XCreateIC(xw.ime.xim, XNInputStyle,
+ XIMPreeditNothing | XIMStatusNothing,
+ XNClientWindow, xw.win,
+ XNDestroyCallback, &icdestroy,
+ NULL);
+ }
+ if (xw.ime.xic == NULL)
+ fprintf(stderr, "XCreateIC: Could not create input context.\n");
+
+ return 1;
+}
+
+void
+ximinstantiate(Display *dpy, XPointer client, XPointer call)
+{
+ if (ximopen(dpy))
+ XUnregisterIMInstantiateCallback(xw.dpy, NULL, NULL, NULL,
+ ximinstantiate, NULL);
+}
+
+void
+ximdestroy(XIM xim, XPointer client, XPointer call)
+{
+ xw.ime.xim = NULL;
+ XRegisterIMInstantiateCallback(xw.dpy, NULL, NULL, NULL,
+ ximinstantiate, NULL);
+ XFree(xw.ime.spotlist);
+}
+
+int
+xicdestroy(XIC xim, XPointer client, XPointer call)
+{
+ xw.ime.xic = NULL;
+ return 1;
+}
+
+void
+xinit(int cols, int rows)
+{
+ XGCValues gcvalues;
+ Cursor cursor;
+ Window parent;
+ pid_t thispid = getpid();
+ XColor xmousefg, xmousebg;
+
+ if (!(xw.dpy = XOpenDisplay(NULL)))
+ die("can't open display\n");
+ xw.scr = XDefaultScreen(xw.dpy);
+ xw.vis = XDefaultVisual(xw.dpy, xw.scr);
+
+ /* font */
+ if (!FcInit())
+ die("could not init fontconfig.\n");
+
+ usedfont = (opt_font == NULL)? font : opt_font;
+ xloadfonts(usedfont, 0);
+
+ /* colors */
+ xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
+ xloadcols();
+
+ /* adjust fixed window geometry */
+ win.w = 2 * win.hborderpx + 2 * borderpx + cols * win.cw;
+ win.h = 2 * win.vborderpx + 2 * borderpx + rows * win.ch;
+ if (xw.gm & XNegative)
+ xw.l += DisplayWidth(xw.dpy, xw.scr) - win.w - 2;
+ if (xw.gm & YNegative)
+ xw.t += DisplayHeight(xw.dpy, xw.scr) - win.h - 2;
+
+ /* Events */
+ xw.attrs.background_pixel = dc.col[defaultbg].pixel;
+ xw.attrs.border_pixel = dc.col[defaultbg].pixel;
+ xw.attrs.bit_gravity = NorthWestGravity;
+ xw.attrs.event_mask = FocusChangeMask | KeyPressMask | KeyReleaseMask
+ | ExposureMask | VisibilityChangeMask | StructureNotifyMask
+ | ButtonMotionMask | ButtonPressMask | ButtonReleaseMask;
+ xw.attrs.colormap = xw.cmap;
+
+ if (!(opt_embed && (parent = strtol(opt_embed, NULL, 0))))
+ parent = XRootWindow(xw.dpy, xw.scr);
+ xw.win = XCreateWindow(xw.dpy, parent, xw.l, xw.t,
+ win.w, win.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
+ xw.vis, CWBackPixel | CWBorderPixel | CWBitGravity
+ | CWEventMask | CWColormap, &xw.attrs);
+
+ memset(&gcvalues, 0, sizeof(gcvalues));
+ gcvalues.graphics_exposures = False;
+ dc.gc = XCreateGC(xw.dpy, parent, GCGraphicsExposures,
+ &gcvalues);
+ xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h,
+ DefaultDepth(xw.dpy, xw.scr));
+ XSetForeground(xw.dpy, dc.gc, dc.col[defaultbg].pixel);
+ XFillRectangle(xw.dpy, xw.buf, dc.gc, 0, 0, win.w, win.h);
+
+ /* font spec buffer */
+ xw.specbuf = xmalloc(cols * sizeof(GlyphFontSpec));
+
+ /* Xft rendering context */
+ xw.draw = XftDrawCreate(xw.dpy, xw.buf, xw.vis, xw.cmap);
+
+ /* input methods */
+ if (!ximopen(xw.dpy)) {
+ XRegisterIMInstantiateCallback(xw.dpy, NULL, NULL, NULL,
+ ximinstantiate, NULL);
+ }
+
+ /* white cursor, black outline */
+ cursor = XCreateFontCursor(xw.dpy, mouseshape);
+ XDefineCursor(xw.dpy, xw.win, cursor);
+
+ if (XParseColor(xw.dpy, xw.cmap, colorname[mousefg], &xmousefg) == 0) {
+ xmousefg.red = 0xffff;
+ xmousefg.green = 0xffff;
+ xmousefg.blue = 0xffff;
+ }
+
+ if (XParseColor(xw.dpy, xw.cmap, colorname[mousebg], &xmousebg) == 0) {
+ xmousebg.red = 0x0000;
+ xmousebg.green = 0x0000;
+ xmousebg.blue = 0x0000;
+ }
+
+ XRecolorCursor(xw.dpy, cursor, &xmousefg, &xmousebg);
+
+ xw.xembed = XInternAtom(xw.dpy, "_XEMBED", False);
+ xw.wmdeletewin = XInternAtom(xw.dpy, "WM_DELETE_WINDOW", False);
+ xw.netwmname = XInternAtom(xw.dpy, "_NET_WM_NAME", False);
+ xw.netwmiconname = XInternAtom(xw.dpy, "_NET_WM_ICON_NAME", False);
+ XSetWMProtocols(xw.dpy, xw.win, &xw.wmdeletewin, 1);
+
+ xw.netwmpid = XInternAtom(xw.dpy, "_NET_WM_PID", False);
+ XChangeProperty(xw.dpy, xw.win, xw.netwmpid, XA_CARDINAL, 32,
+ PropModeReplace, (uchar *)&thispid, 1);
+
+ win.mode = MODE_NUMLOCK;
+ resettitle();
+ xhints();
+ XMapWindow(xw.dpy, xw.win);
+ XSync(xw.dpy, False);
+
+ clock_gettime(CLOCK_MONOTONIC, &xsel.tclick1);
+ clock_gettime(CLOCK_MONOTONIC, &xsel.tclick2);
+ xsel.primary = NULL;
+ xsel.clipboard = NULL;
+ xsel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
+ if (xsel.xtarget == None)
+ xsel.xtarget = XA_STRING;
+
+ // Initialize the graphics (image display) module.
+ gr_init(xw.dpy, xw.vis, xw.cmap);
+}
+
+int
+xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int len, int x, int y)
+{
+ float winx = win.hborderpx + x * win.cw, winy = win.vborderpx + y * win.ch, xp, yp;
+ ushort mode, prevmode = USHRT_MAX;
+ Font *font = &dc.font;
+ int frcflags = FRC_NORMAL;
+ float runewidth = win.cw;
+ Rune rune;
+ FT_UInt glyphidx;
+ FcResult fcres;
+ FcPattern *fcpattern, *fontpattern;
+ FcFontSet *fcsets[] = { NULL };
+ FcCharSet *fccharset;
+ int i, f, numspecs = 0;
+
+ for (i = 0, xp = winx, yp = winy + font->ascent; i < len; ++i) {
+ /* Fetch rune and mode for current glyph. */
+ rune = glyphs[i].u;
+ mode = glyphs[i].mode;
+
+ /* Skip dummy wide-character spacing. */
+ if (mode == ATTR_WDUMMY)
+ continue;
+
+ /* Draw spaces for image placeholders (images will be drawn
+ * separately). */
+ if (mode & ATTR_IMAGE)
+ rune = ' ';
+
+ /* Determine font for glyph if different from previous glyph. */
+ if (prevmode != mode) {
+ prevmode = mode;
+ font = &dc.font;
+ frcflags = FRC_NORMAL;
+ runewidth = win.cw * ((mode & ATTR_WIDE) ? 2.0f : 1.0f);
+ if ((mode & ATTR_ITALIC) && (mode & ATTR_BOLD)) {
+ font = &dc.ibfont;
+ frcflags = FRC_ITALICBOLD;
+ } else if (mode & ATTR_ITALIC) {
+ font = &dc.ifont;
+ frcflags = FRC_ITALIC;
+ } else if (mode & ATTR_BOLD) {
+ font = &dc.bfont;
+ frcflags = FRC_BOLD;
+ }
+ yp = winy + font->ascent;
+ }
+
+ /* Lookup character index with default font. */
+ glyphidx = XftCharIndex(xw.dpy, font->match, rune);
+ if (glyphidx) {
+ specs[numspecs].font = font->match;
+ specs[numspecs].glyph = glyphidx;
+ specs[numspecs].x = (short)xp;
+ specs[numspecs].y = (short)yp;
+ xp += runewidth;
+ numspecs++;
+ continue;
+ }
+
+ /* Fallback on font cache, search the font cache for match. */
+ for (f = 0; f < frclen; f++) {
+ glyphidx = XftCharIndex(xw.dpy, frc[f].font, rune);
+ /* Everything correct. */
+ if (glyphidx && frc[f].flags == frcflags)
+ break;
+ /* We got a default font for a not found glyph. */
+ if (!glyphidx && frc[f].flags == frcflags
+ && frc[f].unicodep == rune) {
+ break;
+ }
+ }
+
+ /* Nothing was found. Use fontconfig to find matching font. */
+ if (f >= frclen) {
+ if (!font->set)
+ font->set = FcFontSort(0, font->pattern,
+ 1, 0, &fcres);
+ fcsets[0] = font->set;
+
+ /*
+ * Nothing was found in the cache. Now use
+ * some dozen of Fontconfig calls to get the
+ * font for one single character.
+ *
+ * Xft and fontconfig are design failures.
+ */
+ fcpattern = FcPatternDuplicate(font->pattern);
+ fccharset = FcCharSetCreate();
+
+ FcCharSetAddChar(fccharset, rune);
+ FcPatternAddCharSet(fcpattern, FC_CHARSET,
+ fccharset);
+ FcPatternAddBool(fcpattern, FC_SCALABLE, 1);
+
+ FcConfigSubstitute(0, fcpattern,
+ FcMatchPattern);
+ FcDefaultSubstitute(fcpattern);
+
+ fontpattern = FcFontSetMatch(0, fcsets, 1,
+ fcpattern, &fcres);
+
+ /* Allocate memory for the new cache entry. */
+ if (frclen >= frccap) {
+ frccap += 16;
+ frc = xrealloc(frc, frccap * sizeof(Fontcache));
+ }
+
+ frc[frclen].font = XftFontOpenPattern(xw.dpy,
+ fontpattern);
+ if (!frc[frclen].font)
+ die("XftFontOpenPattern failed seeking fallback font: %s\n",
+ strerror(errno));
+ frc[frclen].flags = frcflags;
+ frc[frclen].unicodep = rune;
+
+ glyphidx = XftCharIndex(xw.dpy, frc[frclen].font, rune);
+
+ f = frclen;
+ frclen++;
+
+ FcPatternDestroy(fcpattern);
+ FcCharSetDestroy(fccharset);
+ }
+
+ specs[numspecs].font = frc[f].font;
+ specs[numspecs].glyph = glyphidx;
+ specs[numspecs].x = (short)xp;
+ specs[numspecs].y = (short)yp;
+ xp += runewidth;
+ numspecs++;
+ }
+
+ return numspecs;
+}
+
+/* Draws a horizontal dashed line of length `w` starting at `(x, y)`. `wavelen`
+ * is the length of the dash plus the length of the gap. `fraction` is the
+ * fraction of the dash length compared to `wavelen`. */
+static void
+xdrawunderdashed(Draw draw, Color *color, int x, int y, int w,
+ int wavelen, float fraction, int thick)
+{
+ int dashw = MAX(1, fraction * wavelen);
+ for (int i = x - x % wavelen; i < x + w; i += wavelen) {
+ int startx = MAX(i, x);
+ int endx = MIN(i + dashw, x + w);
+ if (startx < endx)
+ XftDrawRect(xw.draw, color, startx, y, endx - startx,
+ thick);
+ }
+}
+
+/* Draws an undercurl. `h` is the total height, including line thickness. */
+static void
+xdrawundercurl(Draw draw, Color *color, int x, int y, int w, int h, int thick)
+{
+ XGCValues gcvals = {.foreground = color->pixel,
+ .line_width = thick,
+ .line_style = LineSolid,
+ .cap_style = CapRound};
+ GC gc = XCreateGC(xw.dpy, XftDrawDrawable(xw.draw),
+ GCForeground | GCLineWidth | GCLineStyle | GCCapStyle,
+ &gcvals);
+
+ XRectangle clip = {.x = x, .y = y, .width = w, .height = h};
+ XSetClipRectangles(xw.dpy, gc, 0, 0, &clip, 1, Unsorted);
+
+ int yoffset = thick / 2;
+ int segh = MAX(1, h - thick);
+ /* Make sure every segment is at a 45 degree angle, otherwise it doesn't
+ * look good without antialiasing. */
+ int segw = segh;
+ int wavelen = MAX(1, segw * 2);
+
+ for (int i = x - (x % wavelen); i < x + w; i += wavelen) {
+ XPoint points[3] = {{.x = i, .y = y + yoffset},
+ {.x = i + segw, .y = y + yoffset + segh},
+ {.x = i + wavelen, .y = y + yoffset}};
+ XDrawLines(xw.dpy, XftDrawDrawable(xw.draw), gc, points, 3,
+ CoordModeOrigin);
+ }
+
+ XFreeGC(xw.dpy, gc);
+}
+
+void
+xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len, int x, int y)
+{
+ int charlen = len * ((base.mode & ATTR_WIDE) ? 2 : 1);
+ int winx = win.hborderpx + x * win.cw, winy = win.vborderpx + y * win.ch,
+ width = charlen * win.cw;
+ Color *fg, *bg, *temp, revfg, revbg, truefg, truebg;
+ XRenderColor colfg, colbg;
+ XRectangle r;
+
+ /* Fallback on color display for attributes not supported by the font */
+ if (base.mode & ATTR_ITALIC && base.mode & ATTR_BOLD) {
+ if (dc.ibfont.badslant || dc.ibfont.badweight)
+ base.fg = defaultattr;
+ } else if ((base.mode & ATTR_ITALIC && dc.ifont.badslant) ||
+ (base.mode & ATTR_BOLD && dc.bfont.badweight)) {
+ base.fg = defaultattr;
+ }
+
+ if (IS_TRUECOL(base.fg)) {
+ colfg.alpha = 0xffff;
+ colfg.red = TRUERED(base.fg);
+ colfg.green = TRUEGREEN(base.fg);
+ colfg.blue = TRUEBLUE(base.fg);
+ XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &truefg);
+ fg = &truefg;
+ } else {
+ fg = &dc.col[base.fg];
+ }
+
+ if (IS_TRUECOL(base.bg)) {
+ colbg.alpha = 0xffff;
+ colbg.green = TRUEGREEN(base.bg);
+ colbg.red = TRUERED(base.bg);
+ colbg.blue = TRUEBLUE(base.bg);
+ XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, &truebg);
+ bg = &truebg;
+ } else {
+ bg = &dc.col[base.bg];
+ }
+
+ /* Change basic system colors [0-7] to bright system colors [8-15] */
+ if ((base.mode & ATTR_BOLD_FAINT) == ATTR_BOLD && BETWEEN(base.fg, 0, 7))
+ fg = &dc.col[base.fg + 8];
+
+ if (IS_SET(MODE_REVERSE)) {
+ if (fg == &dc.col[defaultfg]) {
+ fg = &dc.col[defaultbg];
+ } else {
+ colfg.red = ~fg->color.red;
+ colfg.green = ~fg->color.green;
+ colfg.blue = ~fg->color.blue;
+ colfg.alpha = fg->color.alpha;
+ XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg,
+ &revfg);
+ fg = &revfg;
+ }
+
+ if (bg == &dc.col[defaultbg]) {
+ bg = &dc.col[defaultfg];
+ } else {
+ colbg.red = ~bg->color.red;
+ colbg.green = ~bg->color.green;
+ colbg.blue = ~bg->color.blue;
+ colbg.alpha = bg->color.alpha;
+ XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg,
+ &revbg);
+ bg = &revbg;
+ }
+ }
+
+ if ((base.mode & ATTR_BOLD_FAINT) == ATTR_FAINT) {
+ colfg.red = fg->color.red / 2;
+ colfg.green = fg->color.green / 2;
+ colfg.blue = fg->color.blue / 2;
+ colfg.alpha = fg->color.alpha;
+ XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &revfg);
+ fg = &revfg;
+ }
+
+ if (base.mode & ATTR_REVERSE) {
+ temp = fg;
+ fg = bg;
+ bg = temp;
+ }
+
+ if (base.mode & ATTR_BLINK && win.mode & MODE_BLINK)
+ fg = bg;
+
+ if (base.mode & ATTR_INVISIBLE)
+ fg = bg;
+
+ /* Intelligent cleaning up of the borders. */
+ if (x == 0) {
+ xclear(0, (y == 0)? 0 : winy, win.hborderpx,
+ winy + win.ch +
+ ((winy + win.ch >= win.vborderpx + win.th)? win.h : 0));
+ }
+ if (winx + width >= win.hborderpx + win.tw) {
+ xclear(winx + width, (y == 0)? 0 : winy, win.w,
+ ((winy + win.ch >= win.vborderpx + win.th)? win.h : (winy + win.ch)));
+ }
+ if (y == 0)
+ xclear(winx, 0, winx + width, win.vborderpx);
+ if (winy + win.ch >= win.vborderpx + win.th)
+ xclear(winx, winy + win.ch, winx + width, win.h);
+
+ /* Clean up the region we want to draw to. */
+ XftDrawRect(xw.draw, bg, winx, winy, width, win.ch);
+
+ /* Set the clip region because Xft is sometimes dirty. */
+ r.x = 0;
+ r.y = 0;
+ r.height = win.ch;
+ r.width = width;
+ XftDrawSetClipRectangles(xw.draw, winx, winy, &r, 1);
+
+ /* Decoration color. */
+ Color decor;
+ uint32_t decorcolor = tgetdecorcolor(&base);
+ if (decorcolor == DECOR_DEFAULT_COLOR) {
+ decor = *fg;
+ } else if (IS_TRUECOL(decorcolor)) {
+ colfg.alpha = 0xffff;
+ colfg.red = TRUERED(decorcolor);
+ colfg.green = TRUEGREEN(decorcolor);
+ colfg.blue = TRUEBLUE(decorcolor);
+ XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &decor);
+ } else {
+ decor = dc.col[decorcolor];
+ }
+ decor.color.alpha = 0xffff;
+ decor.pixel |= 0xff << 24;
+
+ /* Float thickness, used as a base to compute other values. */
+ float fthick = dc.font.height / 18.0;
+ /* Integer thickness in pixels. Must not be 0. */
+ int thick = MAX(1, roundf(fthick));
+ /* The default gap between the baseline and a single underline. */
+ int gap = roundf(fthick * 2);
+ /* The total thickness of a double underline. */
+ int doubleh = thick * 2 + ceilf(fthick * 0.5);
+ /* The total thickness of an undercurl. */
+ int curlh = thick * 2 + roundf(fthick * 0.75);
+
+ /* Render the underline before the glyphs. */
+ if (base.mode & ATTR_UNDERLINE) {
+ uint32_t style = tgetdecorstyle(&base);
+ int liney = winy + dc.font.ascent + gap;
+ /* Adjust liney to guarantee that a single underline fits. */
+ liney -= MAX(0, liney + thick - (winy + win.ch));
+ if (style == UNDERLINE_DOUBLE) {
+ liney -= MAX(0, liney + doubleh - (winy + win.ch));
+ XftDrawRect(xw.draw, &decor, winx, liney, width, thick);
+ XftDrawRect(xw.draw, &decor, winx,
+ liney + doubleh - thick, width, thick);
+ } else if (style == UNDERLINE_DOTTED) {
+ xdrawunderdashed(xw.draw, &decor, winx, liney, width,
+ thick * 2, 0.5, thick);
+ } else if (style == UNDERLINE_DASHED) {
+ int wavelen = MAX(2, win.cw * 0.9);
+ xdrawunderdashed(xw.draw, &decor, winx, liney, width,
+ wavelen, 0.65, thick);
+ } else if (style == UNDERLINE_CURLY) {
+ liney -= MAX(0, liney + curlh - (winy + win.ch));
+ xdrawundercurl(xw.draw, &decor, winx, liney, width,
+ curlh, thick);
+ } else {
+ XftDrawRect(xw.draw, &decor, winx, liney, width, thick);
+ }
+ }
+
+ /* Render the glyphs. */
+ XftDrawGlyphFontSpec(xw.draw, fg, specs, len);
+
+ /* Render strikethrough. Alway use the fg color. */
+ if (base.mode & ATTR_STRUCK) {
+ XftDrawRect(xw.draw, fg, winx, winy + 2 * dc.font.ascent / 3,
+ width, thick);
+ }
+
+ /* Reset clip to none. */
+ XftDrawSetClip(xw.draw, 0);
+}
+
+void
+xdrawglyph(Glyph g, int x, int y)
+{
+ int numspecs;
+ XftGlyphFontSpec spec;
+
+ numspecs = xmakeglyphfontspecs(&spec, &g, 1, x, y);
+ xdrawglyphfontspecs(&spec, g, numspecs, x, y);
+ if (g.mode & ATTR_IMAGE) {
+ gr_start_drawing(xw.buf, win.cw, win.ch);
+ xdrawoneimagecell(g, x, y);
+ gr_finish_drawing(xw.buf);
+ }
+}
+
+void
+xdrawcursor(int cx, int cy, Glyph g, int ox, int oy, Glyph og)
+{
+ Color drawcol;
+
+ /* remove the old cursor */
+ if (selected(ox, oy))
+ og.mode ^= ATTR_REVERSE;
+ xdrawglyph(og, ox, oy);
+
+ if (IS_SET(MODE_HIDE))
+ return;
+
+ // If it's an image, just draw a ballot box for simplicity.
+ if (g.mode & ATTR_IMAGE)
+ g.u = 0x2610;
+
+ /*
+ * Select the right color for the right mode.
+ */
+ g.mode &= ATTR_BOLD|ATTR_ITALIC|ATTR_UNDERLINE|ATTR_STRUCK|ATTR_WIDE;
+
+ if (IS_SET(MODE_REVERSE)) {
+ g.mode |= ATTR_REVERSE;
+ g.bg = defaultfg;
+ if (selected(cx, cy)) {
+ drawcol = dc.col[defaultcs];
+ g.fg = defaultrcs;
+ } else {
+ drawcol = dc.col[defaultrcs];
+ g.fg = defaultcs;
+ }
+ } else {
+ if (selected(cx, cy)) {
+ g.fg = defaultfg;
+ g.bg = defaultrcs;
+ } else {
+ g.fg = defaultbg;
+ g.bg = defaultcs;
+ }
+ drawcol = dc.col[g.bg];
+ }
+
+ /* draw the new one */
+ if (IS_SET(MODE_FOCUSED)) {
+ switch (win.cursor) {
+ case 7: /* st extension */
+ g.u = 0x2603; /* snowman (U+2603) */
+ /* FALLTHROUGH */
+ case 0: /* Blinking Block */
+ case 1: /* Blinking Block (Default) */
+ case 2: /* Steady Block */
+ xdrawglyph(g, cx, cy);
+ break;
+ case 3: /* Blinking Underline */
+ case 4: /* Steady Underline */
+ XftDrawRect(xw.draw, &drawcol,
+ win.hborderpx + cx * win.cw,
+ win.vborderpx + (cy + 1) * win.ch - \
+ cursorthickness,
+ win.cw, cursorthickness);
+ break;
+ case 5: /* Blinking bar */
+ case 6: /* Steady bar */
+ XftDrawRect(xw.draw, &drawcol,
+ win.hborderpx + cx * win.cw,
+ win.vborderpx + cy * win.ch,
+ cursorthickness, win.ch);
+ break;
+ }
+ } else {
+ XftDrawRect(xw.draw, &drawcol,
+ win.hborderpx + cx * win.cw,
+ win.vborderpx + cy * win.ch,
+ win.cw - 1, 1);
+ XftDrawRect(xw.draw, &drawcol,
+ win.hborderpx + cx * win.cw,
+ win.vborderpx + cy * win.ch,
+ 1, win.ch - 1);
+ XftDrawRect(xw.draw, &drawcol,
+ win.hborderpx + (cx + 1) * win.cw - 1,
+ win.vborderpx + cy * win.ch,
+ 1, win.ch - 1);
+ XftDrawRect(xw.draw, &drawcol,
+ win.hborderpx + cx * win.cw,
+ win.vborderpx + (cy + 1) * win.ch - 1,
+ win.cw, 1);
+ }
+}
+
+/* Draw (or queue for drawing) image cells between columns x1 and x2 assuming
+ * that they have the same attributes (and thus the same lower 24 bits of the
+ * image ID and the same placement ID). */
+void
+xdrawimages(Glyph base, Line line, int x1, int y1, int x2) {
+ int y_pix = win.vborderpx + y1 * win.ch;
+ uint32_t image_id_24bits = base.fg & 0xFFFFFF;
+ uint32_t placement_id = tgetimgplacementid(&base);
+ // Columns and rows are 1-based, 0 means unspecified.
+ int last_col = 0;
+ int last_row = 0;
+ int last_start_col = 0;
+ int last_start_x = x1;
+ // The most significant byte is also 1-base, subtract 1 before use.
+ uint32_t last_id_4thbyteplus1 = 0;
+ // We may need to inherit row/column/4th byte from the previous cell.
+ Glyph *prev = &line[x1 - 1];
+ if (x1 > 0 && (prev->mode & ATTR_IMAGE) &&
+ (prev->fg & 0xFFFFFF) == image_id_24bits &&
+ prev->decor == base.decor) {
+ last_row = tgetimgrow(prev);
+ last_col = tgetimgcol(prev);
+ last_id_4thbyteplus1 = tgetimgid4thbyteplus1(prev);
+ last_start_col = last_col + 1;
+ }
+ for (int x = x1; x < x2; ++x) {
+ Glyph *g = &line[x];
+ uint32_t cur_row = tgetimgrow(g);
+ uint32_t cur_col = tgetimgcol(g);
+ uint32_t cur_id_4thbyteplus1 = tgetimgid4thbyteplus1(g);
+ uint32_t num_diacritics = tgetimgdiacriticcount(g);
+ // If the row is not specified, assume it's the same as the row
+ // of the previous cell. Note that `cur_row` may contain a
+ // value imputed earlier, which will be preserved if `last_row`
+ // is zero (i.e. we don't know the row of the previous cell).
+ if (last_row && (num_diacritics == 0 || !cur_row))
+ cur_row = last_row;
+ // If the column is not specified and the row is the same as the
+ // row of the previous cell, then assume that the column is the
+ // next one.
+ if (last_col && (num_diacritics <= 1 || !cur_col) &&
+ cur_row == last_row)
+ cur_col = last_col + 1;
+ // If the additional id byte is not specified and the
+ // coordinates are consecutive, assume the byte is also the
+ // same.
+ if (last_id_4thbyteplus1 &&
+ (num_diacritics <= 2 || !cur_id_4thbyteplus1) &&
+ cur_row == last_row && cur_col == last_col + 1)
+ cur_id_4thbyteplus1 = last_id_4thbyteplus1;
+ // If we couldn't infer row and column, start from the top left
+ // corner.
+ if (cur_row == 0)
+ cur_row = 1;
+ if (cur_col == 0)
+ cur_col = 1;
+ // If this cell breaks a contiguous stripe of image cells, draw
+ // that line and start a new one.
+ if (cur_col != last_col + 1 || cur_row != last_row ||
+ cur_id_4thbyteplus1 != last_id_4thbyteplus1) {
+ uint32_t image_id = image_id_24bits;
+ if (last_id_4thbyteplus1)
+ image_id |= (last_id_4thbyteplus1 - 1) << 24;
+ if (last_row != 0) {
+ int x_pix =
+ win.hborderpx + last_start_x * win.cw;
+ gr_append_imagerect(
+ xw.buf, image_id, placement_id,
+ last_start_col - 1, last_col,
+ last_row - 1, last_row, last_start_x,
+ y1, x_pix, y_pix, win.cw, win.ch,
+ base.mode & ATTR_REVERSE);
+ }
+ last_start_col = cur_col;
+ last_start_x = x;
+ }
+ last_row = cur_row;
+ last_col = cur_col;
+ last_id_4thbyteplus1 = cur_id_4thbyteplus1;
+ // Populate the missing glyph data to enable inheritance between
+ // runs and support the naive implementation of tgetimgid.
+ if (!tgetimgrow(g))
+ tsetimgrow(g, cur_row);
+ // We cannot save this information if there are > 511 cols.
+ if (!tgetimgcol(g) && (cur_col & ~0x1ff) == 0)
+ tsetimgcol(g, cur_col);
+ if (!tgetimgid4thbyteplus1(g))
+ tsetimg4thbyteplus1(g, cur_id_4thbyteplus1);
+ }
+ uint32_t image_id = image_id_24bits;
+ if (last_id_4thbyteplus1)
+ image_id |= (last_id_4thbyteplus1 - 1) << 24;
+ // Draw the last contiguous stripe.
+ if (last_row != 0) {
+ int x_pix = win.hborderpx + last_start_x * win.cw;
+ gr_append_imagerect(xw.buf, image_id, placement_id,
+ last_start_col - 1, last_col, last_row - 1,
+ last_row, last_start_x, y1, x_pix, y_pix,
+ win.cw, win.ch, base.mode & ATTR_REVERSE);
+ }
+}
+
+/* Draw just one image cell without inheriting attributes from the left. */
+void xdrawoneimagecell(Glyph g, int x, int y) {
+ if (!(g.mode & ATTR_IMAGE))
+ return;
+ int x_pix = win.hborderpx + x * win.cw;
+ int y_pix = win.vborderpx + y * win.ch;
+ uint32_t row = tgetimgrow(&g) - 1;
+ uint32_t col = tgetimgcol(&g) - 1;
+ uint32_t placement_id = tgetimgplacementid(&g);
+ uint32_t image_id = tgetimgid(&g);
+ gr_append_imagerect(xw.buf, image_id, placement_id, col, col + 1, row,
+ row + 1, x, y, x_pix, y_pix, win.cw, win.ch,
+ g.mode & ATTR_REVERSE);
+}
+
+/* Prepare for image drawing. */
+void xstartimagedraw(int *dirty, int rows) {
+ gr_start_drawing(xw.buf, win.cw, win.ch);
+ gr_mark_dirty_animations(dirty, rows);
+}
+
+/* Draw all queued image cells. */
+void xfinishimagedraw() {
+ gr_finish_drawing(xw.buf);
+}
+
+void
+xsetenv(void)
+{
+ char buf[sizeof(long) * 8 + 1];
+
+ snprintf(buf, sizeof(buf), "%lu", xw.win);
+ setenv("WINDOWID", buf, 1);
+}
+
+void
+xseticontitle(char *p)
+{
+ XTextProperty prop;
+ DEFAULT(p, opt_title);
+
+ if (Xutf8TextListToTextProperty(xw.dpy, &p, 1, XUTF8StringStyle,
+ &prop) != Success)
+ return;
+ XSetWMIconName(xw.dpy, xw.win, &prop);
+ XSetTextProperty(xw.dpy, xw.win, &prop, xw.netwmiconname);
+ XFree(prop.value);
+}
+
+void
+xsettitle(char *p)
+{
+ XTextProperty prop;
+ DEFAULT(p, opt_title);
+
+ if (Xutf8TextListToTextProperty(xw.dpy, &p, 1, XUTF8StringStyle,
+ &prop) != Success)
+ return;
+ XSetWMName(xw.dpy, xw.win, &prop);
+ XSetTextProperty(xw.dpy, xw.win, &prop, xw.netwmname);
+ XFree(prop.value);
+}
+
+int
+xstartdraw(void)
+{
+ return IS_SET(MODE_VISIBLE);
+}
+
+void
+xdrawline(Line line, int x1, int y1, int x2)
+{
+ int i, x, ox, numspecs;
+ Glyph base, new;
+ XftGlyphFontSpec *specs = xw.specbuf;
+
+ numspecs = xmakeglyphfontspecs(specs, &line[x1], x2 - x1, x1, y1);
+ i = ox = 0;
+ for (x = x1; x < x2 && i < numspecs; x++) {
+ new = line[x];
+ if (new.mode == ATTR_WDUMMY)
+ continue;
+ if (selected(x, y1))
+ new.mode ^= ATTR_REVERSE;
+ if (i > 0 && ATTRCMP(base, new)) {
+ xdrawglyphfontspecs(specs, base, i, ox, y1);
+ if (base.mode & ATTR_IMAGE)
+ xdrawimages(base, line, ox, y1, x);
+ specs += i;
+ numspecs -= i;
+ i = 0;
+ }
+ if (i == 0) {
+ ox = x;
+ base = new;
+ }
+ i++;
+ }
+ if (i > 0)
+ xdrawglyphfontspecs(specs, base, i, ox, y1);
+ if (i > 0 && base.mode & ATTR_IMAGE)
+ xdrawimages(base, line, ox, y1, x);
+}
+
+void
+xfinishdraw(void)
+{
+ XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, 0, 0, win.w,
+ win.h, 0, 0);
+ XSetForeground(xw.dpy, dc.gc,
+ dc.col[IS_SET(MODE_REVERSE)?
+ defaultfg : defaultbg].pixel);
+}
+
+void
+xximspot(int x, int y)
+{
+ if (xw.ime.xic == NULL)
+ return;
+
+ xw.ime.spot.x = borderpx + x * win.cw;
+ xw.ime.spot.y = borderpx + (y + 1) * win.ch;
+
+ XSetICValues(xw.ime.xic, XNPreeditAttributes, xw.ime.spotlist, NULL);
+}
+
+void
+expose(XEvent *ev)
+{
+ redraw();
+}
+
+void
+visibility(XEvent *ev)
+{
+ XVisibilityEvent *e = &ev->xvisibility;
+
+ MODBIT(win.mode, e->state != VisibilityFullyObscured, MODE_VISIBLE);
+}
+
+void
+unmap(XEvent *ev)
+{
+ win.mode &= ~MODE_VISIBLE;
+}
+
+void
+xsetpointermotion(int set)
+{
+ MODBIT(xw.attrs.event_mask, set, PointerMotionMask);
+ XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask, &xw.attrs);
+}
+
+void
+xsetmode(int set, unsigned int flags)
+{
+ int mode = win.mode;
+ MODBIT(win.mode, set, flags);
+ if ((win.mode & MODE_REVERSE) != (mode & MODE_REVERSE))
+ redraw();
+}
+
+int
+xsetcursor(int cursor)
+{
+ if (!BETWEEN(cursor, 0, 7)) /* 7: st extension */
+ return 1;
+ win.cursor = cursor;
+ return 0;
+}
+
+void
+xseturgency(int add)
+{
+ XWMHints *h = XGetWMHints(xw.dpy, xw.win);
+
+ MODBIT(h->flags, add, XUrgencyHint);
+ XSetWMHints(xw.dpy, xw.win, h);
+ XFree(h);
+}
+
+void
+xbell(void)
+{
+ if (!(IS_SET(MODE_FOCUSED)))
+ xseturgency(1);
+ if (bellvolume)
+ XkbBell(xw.dpy, xw.win, bellvolume, (Atom)NULL);
+}
+
+void
+focus(XEvent *ev)
+{
+ XFocusChangeEvent *e = &ev->xfocus;
+
+ if (e->mode == NotifyGrab)
+ return;
+
+ if (ev->type == FocusIn) {
+ if (xw.ime.xic)
+ XSetICFocus(xw.ime.xic);
+ win.mode |= MODE_FOCUSED;
+ xseturgency(0);
+ if (IS_SET(MODE_FOCUS))
+ ttywrite("\033[I", 3, 0);
+ } else {
+ if (xw.ime.xic)
+ XUnsetICFocus(xw.ime.xic);
+ win.mode &= ~MODE_FOCUSED;
+ if (IS_SET(MODE_FOCUS))
+ ttywrite("\033[O", 3, 0);
+ }
+}
+
+int
+match(uint mask, uint state)
+{
+ return mask == XK_ANY_MOD || mask == (state & ~ignoremod);
+}
+
+char*
+kmap(KeySym k, uint state)
+{
+ Key *kp;
+ int i;
+
+ /* Check for mapped keys out of X11 function keys. */
+ for (i = 0; i < LEN(mappedkeys); i++) {
+ if (mappedkeys[i] == k)
+ break;
+ }
+ if (i == LEN(mappedkeys)) {
+ if ((k & 0xFFFF) < 0xFD00)
+ return NULL;
+ }
+
+ for (kp = key; kp < key + LEN(key); kp++) {
+ if (kp->k != k)
+ continue;
+
+ if (!match(kp->mask, state))
+ continue;
+
+ if (IS_SET(MODE_APPKEYPAD) ? kp->appkey < 0 : kp->appkey > 0)
+ continue;
+ if (IS_SET(MODE_NUMLOCK) && kp->appkey == 2)
+ continue;
+
+ if (IS_SET(MODE_APPCURSOR) ? kp->appcursor < 0 : kp->appcursor > 0)
+ continue;
+
+ return kp->s;
+ }
+
+ return NULL;
+}
+
+void
+kpress(XEvent *ev)
+{
+ XKeyEvent *e = &ev->xkey;
+ KeySym ksym = NoSymbol;
+ char buf[64], *customkey;
+ int len;
+ Rune c;
+ Status status;
+ Shortcut *bp;
+
+ if (IS_SET(MODE_KBDLOCK))
+ return;
+
+ if (xw.ime.xic) {
+ len = XmbLookupString(xw.ime.xic, e, buf, sizeof buf, &ksym, &status);
+ if (status == XBufferOverflow)
+ return;
+ } else {
+ len = XLookupString(e, buf, sizeof buf, &ksym, NULL);
+ }
+ /* 1. shortcuts */
+ for (bp = shortcuts; bp < shortcuts + LEN(shortcuts); bp++) {
+ if (ksym == bp->keysym && match(bp->mod, e->state)) {
+ bp->func(&(bp->arg));
+ return;
+ }
+ }
+
+ /* 2. custom keys from config.h */
+ if ((customkey = kmap(ksym, e->state))) {
+ ttywrite(customkey, strlen(customkey), 1);
+ return;
+ }
+
+ /* 3. composed string from input method */
+ if (len == 0)
+ return;
+ if (len == 1 && e->state & Mod1Mask) {
+ if (IS_SET(MODE_8BIT)) {
+ if (*buf < 0177) {
+ c = *buf | 0x80;
+ len = utf8encode(c, buf);
+ }
+ } else {
+ buf[1] = buf[0];
+ buf[0] = '\033';
+ len = 2;
+ }
+ }
+ ttywrite(buf, len, 1);
+}
+
+void
+cmessage(XEvent *e)
+{
+ /*
+ * See xembed specs
+ * http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html
+ */
+ if (e->xclient.message_type == xw.xembed && e->xclient.format == 32) {
+ if (e->xclient.data.l[1] == XEMBED_FOCUS_IN) {
+ win.mode |= MODE_FOCUSED;
+ xseturgency(0);
+ } else if (e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
+ win.mode &= ~MODE_FOCUSED;
+ }
+ } else if (e->xclient.data.l[0] == xw.wmdeletewin) {
+ ttyhangup();
+ gr_deinit();
+ exit(0);
+ }
+}
+
+void
+resize(XEvent *e)
+{
+ if (e->xconfigure.width == win.w && e->xconfigure.height == win.h)
+ return;
+
+ cresize(e->xconfigure.width, e->xconfigure.height);
+}
+
+void
+run(void)
+{
+ XEvent ev;
+ int w = win.w, h = win.h;
+ fd_set rfd;
+ int xfd = XConnectionNumber(xw.dpy), ttyfd, xev, drawing;
+ struct timespec seltv, *tv, now, lastblink, trigger;
+ double timeout;
+
+ /* Waiting for window mapping */
+ do {
+ XNextEvent(xw.dpy, &ev);
+ /*
+ * This XFilterEvent call is required because of XOpenIM. It
+ * does filter out the key event and some client message for
+ * the input method too.
+ */
+ if (XFilterEvent(&ev, None))
+ continue;
+ if (ev.type == ConfigureNotify) {
+ w = ev.xconfigure.width;
+ h = ev.xconfigure.height;
+ }
+ } while (ev.type != MapNotify);
+
+ ttyfd = ttynew(opt_line, shell, opt_io, opt_cmd);
+ cresize(w, h);
+
+ for (timeout = -1, drawing = 0, lastblink = (struct timespec){0};;) {
+ FD_ZERO(&rfd);
+ FD_SET(ttyfd, &rfd);
+ FD_SET(xfd, &rfd);
+
+ if (XPending(xw.dpy))
+ timeout = 0; /* existing events might not set xfd */
+
+ /* Decrease the timeout if there are active animations. */
+ if (graphics_next_redraw_delay != INT_MAX &&
+ IS_SET(MODE_VISIBLE))
+ timeout = timeout < 0 ? graphics_next_redraw_delay
+ : MIN(timeout,
+ graphics_next_redraw_delay);
+
+ seltv.tv_sec = timeout / 1E3;
+ seltv.tv_nsec = 1E6 * (timeout - 1E3 * seltv.tv_sec);
+ tv = timeout >= 0 ? &seltv : NULL;
+
+ if (pselect(MAX(xfd, ttyfd)+1, &rfd, NULL, NULL, tv, NULL) < 0) {
+ if (errno == EINTR)
+ continue;
+ die("select failed: %s\n", strerror(errno));
+ }
+ clock_gettime(CLOCK_MONOTONIC, &now);
+
+ if (FD_ISSET(ttyfd, &rfd))
+ ttyread();
+
+ xev = 0;
+ while (XPending(xw.dpy)) {
+ xev = 1;
+ XNextEvent(xw.dpy, &ev);
+ if (XFilterEvent(&ev, None))
+ continue;
+ if (handler[ev.type])
+ (handler[ev.type])(&ev);
+ }
+
+ /*
+ * To reduce flicker and tearing, when new content or event
+ * triggers drawing, we first wait a bit to ensure we got
+ * everything, and if nothing new arrives - we draw.
+ * We start with trying to wait minlatency ms. If more content
+ * arrives sooner, we retry with shorter and shorter periods,
+ * and eventually draw even without idle after maxlatency ms.
+ * Typically this results in low latency while interacting,
+ * maximum latency intervals during `cat huge.txt`, and perfect
+ * sync with periodic updates from animations/key-repeats/etc.
+ */
+ if (FD_ISSET(ttyfd, &rfd) || xev) {
+ if (!drawing) {
+ trigger = now;
+ drawing = 1;
+ }
+ timeout = (maxlatency - TIMEDIFF(now, trigger)) \
+ / maxlatency * minlatency;
+ if (timeout > 0)
+ continue; /* we have time, try to find idle */
+ }
+
+ /* idle detected or maxlatency exhausted -> draw */
+ timeout = -1;
+ if (blinktimeout && tattrset(ATTR_BLINK)) {
+ timeout = blinktimeout - TIMEDIFF(now, lastblink);
+ if (timeout <= 0) {
+ if (-timeout > blinktimeout) /* start visible */
+ win.mode |= MODE_BLINK;
+ win.mode ^= MODE_BLINK;
+ tsetdirtattr(ATTR_BLINK);
+ lastblink = now;
+ timeout = blinktimeout;
+ }
+ }
+
+ draw();
+ XFlush(xw.dpy);
+ drawing = 0;
+ }
+}
+
+void
+usage(void)
+{
+ die("usage: %s [-aiv] [-c class] [-f font] [-g geometry]"
+ " [-n name] [-o file]\n"
+ " [-T title] [-t title] [-w windowid]"
+ " [[-e] command [args ...]]\n"
+ " %s [-aiv] [-c class] [-f font] [-g geometry]"
+ " [-n name] [-o file]\n"
+ " [-T title] [-t title] [-w windowid] -l line"
+ " [stty_args ...]\n", argv0, argv0);
+}
+
+int
+main(int argc, char *argv[])
+{
+ xw.l = xw.t = 0;
+ xw.isfixed = False;
+ xsetcursor(cursorshape);
+
+ ARGBEGIN {
+ case 'a':
+ allowaltscreen = 0;
+ break;
+ case 'c':
+ opt_class = EARGF(usage());
+ break;
+ case 'e':
+ if (argc > 0)
+ --argc, ++argv;
+ goto run;
+ case 'f':
+ opt_font = EARGF(usage());
+ break;
+ case 'g':
+ xw.gm = XParseGeometry(EARGF(usage()),
+ &xw.l, &xw.t, &cols, &rows);
+ break;
+ case 'i':
+ xw.isfixed = 1;
+ break;
+ case 'o':
+ opt_io = EARGF(usage());
+ break;
+ case 'l':
+ opt_line = EARGF(usage());
+ break;
+ case 'n':
+ opt_name = EARGF(usage());
+ break;
+ case 't':
+ case 'T':
+ opt_title = EARGF(usage());
+ break;
+ case 'w':
+ opt_embed = EARGF(usage());
+ break;
+ case 'v':
+ die("%s " VERSION "\n", argv0);
+ break;
+ default:
+ usage();
+ } ARGEND;
+
+run:
+ if (argc > 0) /* eat all remaining arguments */
+ opt_cmd = argv;
+
+ if (!opt_title)
+ opt_title = (opt_line || !opt_cmd) ? "st" : opt_cmd[0];
+
+ setlocale(LC_CTYPE, "");
+ XSetLocaleModifiers("");
+ cols = MAX(cols, 1);
+ rows = MAX(rows, 1);
+ tnew(cols, rows);
+ xinit(cols, rows);
+ xsetenv();
+ selinit();
+ run();
+
+ return 0;
+}
diff --git a/st/x.c.orig b/st/x.c.orig
@@ -0,0 +1,2099 @@
+/* See LICENSE for license details. */
+#include <errno.h>
+#include <math.h>
+#include <limits.h>
+#include <locale.h>
+#include <signal.h>
+#include <sys/select.h>
+#include <time.h>
+#include <unistd.h>
+#include <libgen.h>
+#include <X11/Xatom.h>
+#include <X11/Xlib.h>
+#include <X11/cursorfont.h>
+#include <X11/keysym.h>
+#include <X11/Xft/Xft.h>
+#include <X11/XKBlib.h>
+
+char *argv0;
+#include "arg.h"
+#include "st.h"
+#include "win.h"
+
+/* types used in config.h */
+typedef struct {
+ uint mod;
+ KeySym keysym;
+ void (*func)(const Arg *);
+ const Arg arg;
+} Shortcut;
+
+typedef struct {
+ uint mod;
+ uint button;
+ void (*func)(const Arg *);
+ const Arg arg;
+ uint release;
+} MouseShortcut;
+
+typedef struct {
+ KeySym k;
+ uint mask;
+ char *s;
+ /* three-valued logic variables: 0 indifferent, 1 on, -1 off */
+ signed char appkey; /* application keypad */
+ signed char appcursor; /* application cursor */
+} Key;
+
+/* X modifiers */
+#define XK_ANY_MOD UINT_MAX
+#define XK_NO_MOD 0
+#define XK_SWITCH_MOD (1<<13|1<<14)
+
+/* function definitions used in config.h */
+static void clipcopy(const Arg *);
+static void clippaste(const Arg *);
+static void numlock(const Arg *);
+static void selpaste(const Arg *);
+static void zoom(const Arg *);
+static void zoomabs(const Arg *);
+static void zoomreset(const Arg *);
+static void ttysend(const Arg *);
+
+/* config.h for applying patches and the configuration. */
+#include "config.h"
+
+/* XEMBED messages */
+#define XEMBED_FOCUS_IN 4
+#define XEMBED_FOCUS_OUT 5
+
+/* macros */
+#define IS_SET(flag) ((win.mode & (flag)) != 0)
+#define TRUERED(x) (((x) & 0xff0000) >> 8)
+#define TRUEGREEN(x) (((x) & 0xff00))
+#define TRUEBLUE(x) (((x) & 0xff) << 8)
+
+typedef XftDraw *Draw;
+typedef XftColor Color;
+typedef XftGlyphFontSpec GlyphFontSpec;
+
+/* Purely graphic info */
+typedef struct {
+ int tw, th; /* tty width and height */
+ int w, h; /* window width and height */
+ int ch; /* char height */
+ int cw; /* char width */
+ int mode; /* window state/mode flags */
+ int cursor; /* cursor style */
+} TermWindow;
+
+typedef struct {
+ Display *dpy;
+ Colormap cmap;
+ Window win;
+ Drawable buf;
+ GlyphFontSpec *specbuf; /* font spec buffer used for rendering */
+ Atom xembed, wmdeletewin, netwmname, netwmiconname, netwmpid;
+ struct {
+ XIM xim;
+ XIC xic;
+ XPoint spot;
+ XVaNestedList spotlist;
+ } ime;
+ Draw draw;
+ Visual *vis;
+ XSetWindowAttributes attrs;
+ int scr;
+ int isfixed; /* is fixed geometry? */
+ int l, t; /* left and top offset */
+ int gm; /* geometry mask */
+} XWindow;
+
+typedef struct {
+ Atom xtarget;
+ char *primary, *clipboard;
+ struct timespec tclick1;
+ struct timespec tclick2;
+} XSelection;
+
+/* Font structure */
+#define Font Font_
+typedef struct {
+ int height;
+ int width;
+ int ascent;
+ int descent;
+ int badslant;
+ int badweight;
+ short lbearing;
+ short rbearing;
+ XftFont *match;
+ FcFontSet *set;
+ FcPattern *pattern;
+} Font;
+
+/* Drawing Context */
+typedef struct {
+ Color *col;
+ size_t collen;
+ Font font, bfont, ifont, ibfont;
+ GC gc;
+} DC;
+
+static inline ushort sixd_to_16bit(int);
+static int xmakeglyphfontspecs(XftGlyphFontSpec *, const Glyph *, int, int, int);
+static void xdrawglyphfontspecs(const XftGlyphFontSpec *, Glyph, int, int, int);
+static void xdrawglyph(Glyph, int, int);
+static void xclear(int, int, int, int);
+static int xgeommasktogravity(int);
+static int ximopen(Display *);
+static void ximinstantiate(Display *, XPointer, XPointer);
+static void ximdestroy(XIM, XPointer, XPointer);
+static int xicdestroy(XIC, XPointer, XPointer);
+static void xinit(int, int);
+static void cresize(int, int);
+static void xresize(int, int);
+static void xhints(void);
+static int xloadcolor(int, const char *, Color *);
+static int xloadfont(Font *, FcPattern *);
+static void xloadfonts(const char *, double);
+static void xunloadfont(Font *);
+static void xunloadfonts(void);
+static void xsetenv(void);
+static void xseturgency(int);
+static int evcol(XEvent *);
+static int evrow(XEvent *);
+
+static void expose(XEvent *);
+static void visibility(XEvent *);
+static void unmap(XEvent *);
+static void kpress(XEvent *);
+static void cmessage(XEvent *);
+static void resize(XEvent *);
+static void focus(XEvent *);
+static uint buttonmask(uint);
+static int mouseaction(XEvent *, uint);
+static void brelease(XEvent *);
+static void bpress(XEvent *);
+static void bmotion(XEvent *);
+static void propnotify(XEvent *);
+static void selnotify(XEvent *);
+static void selclear_(XEvent *);
+static void selrequest(XEvent *);
+static void setsel(char *, Time);
+static void mousesel(XEvent *, int);
+static void mousereport(XEvent *);
+static char *kmap(KeySym, uint);
+static int match(uint, uint);
+
+static void run(void);
+static void usage(void);
+
+static void (*handler[LASTEvent])(XEvent *) = {
+ [KeyPress] = kpress,
+ [ClientMessage] = cmessage,
+ [ConfigureNotify] = resize,
+ [VisibilityNotify] = visibility,
+ [UnmapNotify] = unmap,
+ [Expose] = expose,
+ [FocusIn] = focus,
+ [FocusOut] = focus,
+ [MotionNotify] = bmotion,
+ [ButtonPress] = bpress,
+ [ButtonRelease] = brelease,
+/*
+ * Uncomment if you want the selection to disappear when you select something
+ * different in another window.
+ */
+/* [SelectionClear] = selclear_, */
+ [SelectionNotify] = selnotify,
+/*
+ * PropertyNotify is only turned on when there is some INCR transfer happening
+ * for the selection retrieval.
+ */
+ [PropertyNotify] = propnotify,
+ [SelectionRequest] = selrequest,
+};
+
+/* Globals */
+static DC dc;
+static XWindow xw;
+static XSelection xsel;
+static TermWindow win;
+
+/* Font Ring Cache */
+enum {
+ FRC_NORMAL,
+ FRC_ITALIC,
+ FRC_BOLD,
+ FRC_ITALICBOLD
+};
+
+typedef struct {
+ XftFont *font;
+ int flags;
+ Rune unicodep;
+} Fontcache;
+
+/* Fontcache is an array now. A new font will be appended to the array. */
+static Fontcache *frc = NULL;
+static int frclen = 0;
+static int frccap = 0;
+static char *usedfont = NULL;
+static double usedfontsize = 0;
+static double defaultfontsize = 0;
+
+static char *opt_class = NULL;
+static char **opt_cmd = NULL;
+static char *opt_embed = NULL;
+static char *opt_font = NULL;
+static char *opt_io = NULL;
+static char *opt_line = NULL;
+static char *opt_name = NULL;
+static char *opt_title = NULL;
+
+static uint buttons; /* bit field of pressed buttons */
+
+void
+clipcopy(const Arg *dummy)
+{
+ Atom clipboard;
+
+ free(xsel.clipboard);
+ xsel.clipboard = NULL;
+
+ if (xsel.primary != NULL) {
+ xsel.clipboard = xstrdup(xsel.primary);
+ clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
+ XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
+ }
+}
+
+void
+clippaste(const Arg *dummy)
+{
+ Atom clipboard;
+
+ clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
+ XConvertSelection(xw.dpy, clipboard, xsel.xtarget, clipboard,
+ xw.win, CurrentTime);
+}
+
+void
+selpaste(const Arg *dummy)
+{
+ XConvertSelection(xw.dpy, XA_PRIMARY, xsel.xtarget, XA_PRIMARY,
+ xw.win, CurrentTime);
+}
+
+void
+numlock(const Arg *dummy)
+{
+ win.mode ^= MODE_NUMLOCK;
+}
+
+void
+zoom(const Arg *arg)
+{
+ Arg larg;
+
+ larg.f = usedfontsize + arg->f;
+ zoomabs(&larg);
+}
+
+void
+zoomabs(const Arg *arg)
+{
+ xunloadfonts();
+ xloadfonts(usedfont, arg->f);
+ cresize(0, 0);
+ redraw();
+ xhints();
+}
+
+void
+zoomreset(const Arg *arg)
+{
+ Arg larg;
+
+ if (defaultfontsize > 0) {
+ larg.f = defaultfontsize;
+ zoomabs(&larg);
+ }
+}
+
+void
+ttysend(const Arg *arg)
+{
+ ttywrite(arg->s, strlen(arg->s), 1);
+}
+
+int
+evcol(XEvent *e)
+{
+ int x = e->xbutton.x - borderpx;
+ LIMIT(x, 0, win.tw - 1);
+ return x / win.cw;
+}
+
+int
+evrow(XEvent *e)
+{
+ int y = e->xbutton.y - borderpx;
+ LIMIT(y, 0, win.th - 1);
+ return y / win.ch;
+}
+
+void
+mousesel(XEvent *e, int done)
+{
+ int type, seltype = SEL_REGULAR;
+ uint state = e->xbutton.state & ~(Button1Mask | forcemousemod);
+
+ for (type = 1; type < LEN(selmasks); ++type) {
+ if (match(selmasks[type], state)) {
+ seltype = type;
+ break;
+ }
+ }
+ selextend(evcol(e), evrow(e), seltype, done);
+ if (done)
+ setsel(getsel(), e->xbutton.time);
+}
+
+void
+mousereport(XEvent *e)
+{
+ int len, btn, code;
+ int x = evcol(e), y = evrow(e);
+ int state = e->xbutton.state;
+ char buf[40];
+ static int ox, oy;
+
+ if (e->type == MotionNotify) {
+ if (x == ox && y == oy)
+ return;
+ if (!IS_SET(MODE_MOUSEMOTION) && !IS_SET(MODE_MOUSEMANY))
+ return;
+ /* MODE_MOUSEMOTION: no reporting if no button is pressed */
+ if (IS_SET(MODE_MOUSEMOTION) && buttons == 0)
+ return;
+ /* Set btn to lowest-numbered pressed button, or 12 if no
+ * buttons are pressed. */
+ for (btn = 1; btn <= 11 && !(buttons & (1<<(btn-1))); btn++)
+ ;
+ code = 32;
+ } else {
+ btn = e->xbutton.button;
+ /* Only buttons 1 through 11 can be encoded */
+ if (btn < 1 || btn > 11)
+ return;
+ if (e->type == ButtonRelease) {
+ /* MODE_MOUSEX10: no button release reporting */
+ if (IS_SET(MODE_MOUSEX10))
+ return;
+ /* Don't send release events for the scroll wheel */
+ if (btn == 4 || btn == 5)
+ return;
+ }
+ code = 0;
+ }
+
+ ox = x;
+ oy = y;
+
+ /* Encode btn into code. If no button is pressed for a motion event in
+ * MODE_MOUSEMANY, then encode it as a release. */
+ if ((!IS_SET(MODE_MOUSESGR) && e->type == ButtonRelease) || btn == 12)
+ code += 3;
+ else if (btn >= 8)
+ code += 128 + btn - 8;
+ else if (btn >= 4)
+ code += 64 + btn - 4;
+ else
+ code += btn - 1;
+
+ if (!IS_SET(MODE_MOUSEX10)) {
+ code += ((state & ShiftMask ) ? 4 : 0)
+ + ((state & Mod1Mask ) ? 8 : 0) /* meta key: alt */
+ + ((state & ControlMask) ? 16 : 0);
+ }
+
+ if (IS_SET(MODE_MOUSESGR)) {
+ len = snprintf(buf, sizeof(buf), "\033[<%d;%d;%d%c",
+ code, x+1, y+1,
+ e->type == ButtonRelease ? 'm' : 'M');
+ } else if (x < 223 && y < 223) {
+ len = snprintf(buf, sizeof(buf), "\033[M%c%c%c",
+ 32+code, 32+x+1, 32+y+1);
+ } else {
+ return;
+ }
+
+ ttywrite(buf, len, 0);
+}
+
+uint
+buttonmask(uint button)
+{
+ return button == Button1 ? Button1Mask
+ : button == Button2 ? Button2Mask
+ : button == Button3 ? Button3Mask
+ : button == Button4 ? Button4Mask
+ : button == Button5 ? Button5Mask
+ : 0;
+}
+
+int
+mouseaction(XEvent *e, uint release)
+{
+ MouseShortcut *ms;
+
+ /* ignore Button<N>mask for Button<N> - it's set on release */
+ uint state = e->xbutton.state & ~buttonmask(e->xbutton.button);
+
+ for (ms = mshortcuts; ms < mshortcuts + LEN(mshortcuts); ms++) {
+ if (ms->release == release &&
+ ms->button == e->xbutton.button &&
+ (match(ms->mod, state) || /* exact or forced */
+ match(ms->mod, state & ~forcemousemod))) {
+ ms->func(&(ms->arg));
+ return 1;
+ }
+ }
+
+ return 0;
+}
+
+void
+bpress(XEvent *e)
+{
+ int btn = e->xbutton.button;
+ struct timespec now;
+ int snap;
+
+ if (1 <= btn && btn <= 11)
+ buttons |= 1 << (btn-1);
+
+ if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forcemousemod)) {
+ mousereport(e);
+ return;
+ }
+
+ if (mouseaction(e, 0))
+ return;
+
+ if (btn == Button1) {
+ /*
+ * If the user clicks below predefined timeouts specific
+ * snapping behaviour is exposed.
+ */
+ clock_gettime(CLOCK_MONOTONIC, &now);
+ if (TIMEDIFF(now, xsel.tclick2) <= tripleclicktimeout) {
+ snap = SNAP_LINE;
+ } else if (TIMEDIFF(now, xsel.tclick1) <= doubleclicktimeout) {
+ snap = SNAP_WORD;
+ } else {
+ snap = 0;
+ }
+ xsel.tclick2 = xsel.tclick1;
+ xsel.tclick1 = now;
+
+ selstart(evcol(e), evrow(e), snap);
+ }
+}
+
+void
+propnotify(XEvent *e)
+{
+ XPropertyEvent *xpev;
+ Atom clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
+
+ xpev = &e->xproperty;
+ if (xpev->state == PropertyNewValue &&
+ (xpev->atom == XA_PRIMARY ||
+ xpev->atom == clipboard)) {
+ selnotify(e);
+ }
+}
+
+void
+selnotify(XEvent *e)
+{
+ ulong nitems, ofs, rem;
+ int format;
+ uchar *data, *last, *repl;
+ Atom type, incratom, property = None;
+
+ incratom = XInternAtom(xw.dpy, "INCR", 0);
+
+ ofs = 0;
+ if (e->type == SelectionNotify)
+ property = e->xselection.property;
+ else if (e->type == PropertyNotify)
+ property = e->xproperty.atom;
+
+ if (property == None)
+ return;
+
+ do {
+ if (XGetWindowProperty(xw.dpy, xw.win, property, ofs,
+ BUFSIZ/4, False, AnyPropertyType,
+ &type, &format, &nitems, &rem,
+ &data)) {
+ fprintf(stderr, "Clipboard allocation failed\n");
+ return;
+ }
+
+ if (e->type == PropertyNotify && nitems == 0 && rem == 0) {
+ /*
+ * If there is some PropertyNotify with no data, then
+ * this is the signal of the selection owner that all
+ * data has been transferred. We won't need to receive
+ * PropertyNotify events anymore.
+ */
+ MODBIT(xw.attrs.event_mask, 0, PropertyChangeMask);
+ XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask,
+ &xw.attrs);
+ }
+
+ if (type == incratom) {
+ /*
+ * Activate the PropertyNotify events so we receive
+ * when the selection owner does send us the next
+ * chunk of data.
+ */
+ MODBIT(xw.attrs.event_mask, 1, PropertyChangeMask);
+ XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask,
+ &xw.attrs);
+
+ /*
+ * Deleting the property is the transfer start signal.
+ */
+ XDeleteProperty(xw.dpy, xw.win, (int)property);
+ continue;
+ }
+
+ /*
+ * As seen in getsel:
+ * Line endings are inconsistent in the terminal and GUI world
+ * copy and pasting. When receiving some selection data,
+ * replace all '\n' with '\r'.
+ * FIXME: Fix the computer world.
+ */
+ repl = data;
+ last = data + nitems * format / 8;
+ while ((repl = memchr(repl, '\n', last - repl))) {
+ *repl++ = '\r';
+ }
+
+ if (IS_SET(MODE_BRCKTPASTE) && ofs == 0)
+ ttywrite("\033[200~", 6, 0);
+ ttywrite((char *)data, nitems * format / 8, 1);
+ if (IS_SET(MODE_BRCKTPASTE) && rem == 0)
+ ttywrite("\033[201~", 6, 0);
+ XFree(data);
+ /* number of 32-bit chunks returned */
+ ofs += nitems * format / 32;
+ } while (rem > 0);
+
+ /*
+ * Deleting the property again tells the selection owner to send the
+ * next data chunk in the property.
+ */
+ XDeleteProperty(xw.dpy, xw.win, (int)property);
+}
+
+void
+xclipcopy(void)
+{
+ clipcopy(NULL);
+}
+
+void
+selclear_(XEvent *e)
+{
+ selclear();
+}
+
+void
+selrequest(XEvent *e)
+{
+ XSelectionRequestEvent *xsre;
+ XSelectionEvent xev;
+ Atom xa_targets, string, clipboard;
+ char *seltext;
+
+ xsre = (XSelectionRequestEvent *) e;
+ xev.type = SelectionNotify;
+ xev.requestor = xsre->requestor;
+ xev.selection = xsre->selection;
+ xev.target = xsre->target;
+ xev.time = xsre->time;
+ if (xsre->property == None)
+ xsre->property = xsre->target;
+
+ /* reject */
+ xev.property = None;
+
+ xa_targets = XInternAtom(xw.dpy, "TARGETS", 0);
+ if (xsre->target == xa_targets) {
+ /* respond with the supported type */
+ string = xsel.xtarget;
+ XChangeProperty(xsre->display, xsre->requestor, xsre->property,
+ XA_ATOM, 32, PropModeReplace,
+ (uchar *) &string, 1);
+ xev.property = xsre->property;
+ } else if (xsre->target == xsel.xtarget || xsre->target == XA_STRING) {
+ /*
+ * xith XA_STRING non ascii characters may be incorrect in the
+ * requestor. It is not our problem, use utf8.
+ */
+ clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
+ if (xsre->selection == XA_PRIMARY) {
+ seltext = xsel.primary;
+ } else if (xsre->selection == clipboard) {
+ seltext = xsel.clipboard;
+ } else {
+ fprintf(stderr,
+ "Unhandled clipboard selection 0x%lx\n",
+ xsre->selection);
+ return;
+ }
+ if (seltext != NULL) {
+ XChangeProperty(xsre->display, xsre->requestor,
+ xsre->property, xsre->target,
+ 8, PropModeReplace,
+ (uchar *)seltext, strlen(seltext));
+ xev.property = xsre->property;
+ }
+ }
+
+ /* all done, send a notification to the listener */
+ if (!XSendEvent(xsre->display, xsre->requestor, 1, 0, (XEvent *) &xev))
+ fprintf(stderr, "Error sending SelectionNotify event\n");
+}
+
+void
+setsel(char *str, Time t)
+{
+ if (!str)
+ return;
+
+ free(xsel.primary);
+ xsel.primary = str;
+
+ XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, t);
+ if (XGetSelectionOwner(xw.dpy, XA_PRIMARY) != xw.win)
+ selclear();
+}
+
+void
+xsetsel(char *str)
+{
+ setsel(str, CurrentTime);
+}
+
+void
+brelease(XEvent *e)
+{
+ int btn = e->xbutton.button;
+
+ if (1 <= btn && btn <= 11)
+ buttons &= ~(1 << (btn-1));
+
+ if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forcemousemod)) {
+ mousereport(e);
+ return;
+ }
+
+ if (mouseaction(e, 1))
+ return;
+ if (btn == Button1)
+ mousesel(e, 1);
+}
+
+void
+bmotion(XEvent *e)
+{
+ if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forcemousemod)) {
+ mousereport(e);
+ return;
+ }
+
+ mousesel(e, 0);
+}
+
+void
+cresize(int width, int height)
+{
+ int col, row;
+
+ if (width != 0)
+ win.w = width;
+ if (height != 0)
+ win.h = height;
+
+ col = (win.w - 2 * borderpx) / win.cw;
+ row = (win.h - 2 * borderpx) / win.ch;
+ col = MAX(1, col);
+ row = MAX(1, row);
+
+ tresize(col, row);
+ xresize(col, row);
+ ttyresize(win.tw, win.th);
+}
+
+void
+xresize(int col, int row)
+{
+ win.tw = col * win.cw;
+ win.th = row * win.ch;
+
+ XFreePixmap(xw.dpy, xw.buf);
+ xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h,
+ DefaultDepth(xw.dpy, xw.scr));
+ XftDrawChange(xw.draw, xw.buf);
+ xclear(0, 0, win.w, win.h);
+
+ /* resize to new width */
+ xw.specbuf = xrealloc(xw.specbuf, col * sizeof(GlyphFontSpec));
+}
+
+ushort
+sixd_to_16bit(int x)
+{
+ return x == 0 ? 0 : 0x3737 + 0x2828 * x;
+}
+
+int
+xloadcolor(int i, const char *name, Color *ncolor)
+{
+ XRenderColor color = { .alpha = 0xffff };
+
+ if (!name) {
+ if (BETWEEN(i, 16, 255)) { /* 256 color */
+ if (i < 6*6*6+16) { /* same colors as xterm */
+ color.red = sixd_to_16bit( ((i-16)/36)%6 );
+ color.green = sixd_to_16bit( ((i-16)/6) %6 );
+ color.blue = sixd_to_16bit( ((i-16)/1) %6 );
+ } else { /* greyscale */
+ color.red = 0x0808 + 0x0a0a * (i - (6*6*6+16));
+ color.green = color.blue = color.red;
+ }
+ return XftColorAllocValue(xw.dpy, xw.vis,
+ xw.cmap, &color, ncolor);
+ } else
+ name = colorname[i];
+ }
+
+ return XftColorAllocName(xw.dpy, xw.vis, xw.cmap, name, ncolor);
+}
+
+void
+xloadcols(void)
+{
+ int i;
+ static int loaded;
+ Color *cp;
+
+ if (loaded) {
+ for (cp = dc.col; cp < &dc.col[dc.collen]; ++cp)
+ XftColorFree(xw.dpy, xw.vis, xw.cmap, cp);
+ } else {
+ dc.collen = MAX(LEN(colorname), 256);
+ dc.col = xmalloc(dc.collen * sizeof(Color));
+ }
+
+ for (i = 0; i < dc.collen; i++)
+ if (!xloadcolor(i, NULL, &dc.col[i])) {
+ if (colorname[i])
+ die("could not allocate color '%s'\n", colorname[i]);
+ else
+ die("could not allocate color %d\n", i);
+ }
+ loaded = 1;
+}
+
+int
+xgetcolor(int x, unsigned char *r, unsigned char *g, unsigned char *b)
+{
+ if (!BETWEEN(x, 0, dc.collen))
+ return 1;
+
+ *r = dc.col[x].color.red >> 8;
+ *g = dc.col[x].color.green >> 8;
+ *b = dc.col[x].color.blue >> 8;
+
+ return 0;
+}
+
+int
+xsetcolorname(int x, const char *name)
+{
+ Color ncolor;
+
+ if (!BETWEEN(x, 0, dc.collen))
+ return 1;
+
+ if (!xloadcolor(x, name, &ncolor))
+ return 1;
+
+ XftColorFree(xw.dpy, xw.vis, xw.cmap, &dc.col[x]);
+ dc.col[x] = ncolor;
+
+ return 0;
+}
+
+/*
+ * Absolute coordinates.
+ */
+void
+xclear(int x1, int y1, int x2, int y2)
+{
+ XftDrawRect(xw.draw,
+ &dc.col[IS_SET(MODE_REVERSE)? defaultfg : defaultbg],
+ x1, y1, x2-x1, y2-y1);
+}
+
+void
+xhints(void)
+{
+ XClassHint class = {opt_name ? opt_name : termname,
+ opt_class ? opt_class : termname};
+ XWMHints wm = {.flags = InputHint, .input = 1};
+ XSizeHints *sizeh;
+
+ sizeh = XAllocSizeHints();
+
+ sizeh->flags = PSize | PResizeInc | PBaseSize | PMinSize;
+ sizeh->height = win.h;
+ sizeh->width = win.w;
+ sizeh->height_inc = win.ch;
+ sizeh->width_inc = win.cw;
+ sizeh->base_height = 2 * borderpx;
+ sizeh->base_width = 2 * borderpx;
+ sizeh->min_height = win.ch + 2 * borderpx;
+ sizeh->min_width = win.cw + 2 * borderpx;
+ if (xw.isfixed) {
+ sizeh->flags |= PMaxSize;
+ sizeh->min_width = sizeh->max_width = win.w;
+ sizeh->min_height = sizeh->max_height = win.h;
+ }
+ if (xw.gm & (XValue|YValue)) {
+ sizeh->flags |= USPosition | PWinGravity;
+ sizeh->x = xw.l;
+ sizeh->y = xw.t;
+ sizeh->win_gravity = xgeommasktogravity(xw.gm);
+ }
+
+ XSetWMProperties(xw.dpy, xw.win, NULL, NULL, NULL, 0, sizeh, &wm,
+ &class);
+ XFree(sizeh);
+}
+
+int
+xgeommasktogravity(int mask)
+{
+ switch (mask & (XNegative|YNegative)) {
+ case 0:
+ return NorthWestGravity;
+ case XNegative:
+ return NorthEastGravity;
+ case YNegative:
+ return SouthWestGravity;
+ }
+
+ return SouthEastGravity;
+}
+
+int
+xloadfont(Font *f, FcPattern *pattern)
+{
+ FcPattern *configured;
+ FcPattern *match;
+ FcResult result;
+ XGlyphInfo extents;
+ int wantattr, haveattr;
+
+ /*
+ * Manually configure instead of calling XftMatchFont
+ * so that we can use the configured pattern for
+ * "missing glyph" lookups.
+ */
+ configured = FcPatternDuplicate(pattern);
+ if (!configured)
+ return 1;
+
+ FcConfigSubstitute(NULL, configured, FcMatchPattern);
+ XftDefaultSubstitute(xw.dpy, xw.scr, configured);
+
+ match = FcFontMatch(NULL, configured, &result);
+ if (!match) {
+ FcPatternDestroy(configured);
+ return 1;
+ }
+
+ if (!(f->match = XftFontOpenPattern(xw.dpy, match))) {
+ FcPatternDestroy(configured);
+ FcPatternDestroy(match);
+ return 1;
+ }
+
+ if ((XftPatternGetInteger(pattern, "slant", 0, &wantattr) ==
+ XftResultMatch)) {
+ /*
+ * Check if xft was unable to find a font with the appropriate
+ * slant but gave us one anyway. Try to mitigate.
+ */
+ if ((XftPatternGetInteger(f->match->pattern, "slant", 0,
+ &haveattr) != XftResultMatch) || haveattr < wantattr) {
+ f->badslant = 1;
+ fputs("font slant does not match\n", stderr);
+ }
+ }
+
+ if ((XftPatternGetInteger(pattern, "weight", 0, &wantattr) ==
+ XftResultMatch)) {
+ if ((XftPatternGetInteger(f->match->pattern, "weight", 0,
+ &haveattr) != XftResultMatch) || haveattr != wantattr) {
+ f->badweight = 1;
+ fputs("font weight does not match\n", stderr);
+ }
+ }
+
+ XftTextExtentsUtf8(xw.dpy, f->match,
+ (const FcChar8 *) ascii_printable,
+ strlen(ascii_printable), &extents);
+
+ f->set = NULL;
+ f->pattern = configured;
+
+ f->ascent = f->match->ascent;
+ f->descent = f->match->descent;
+ f->lbearing = 0;
+ f->rbearing = f->match->max_advance_width;
+
+ f->height = f->ascent + f->descent;
+ f->width = DIVCEIL(extents.xOff, strlen(ascii_printable));
+
+ return 0;
+}
+
+void
+xloadfonts(const char *fontstr, double fontsize)
+{
+ FcPattern *pattern;
+ double fontval;
+
+ if (fontstr[0] == '-')
+ pattern = XftXlfdParse(fontstr, False, False);
+ else
+ pattern = FcNameParse((const FcChar8 *)fontstr);
+
+ if (!pattern)
+ die("can't open font %s\n", fontstr);
+
+ if (fontsize > 1) {
+ FcPatternDel(pattern, FC_PIXEL_SIZE);
+ FcPatternDel(pattern, FC_SIZE);
+ FcPatternAddDouble(pattern, FC_PIXEL_SIZE, (double)fontsize);
+ usedfontsize = fontsize;
+ } else {
+ if (FcPatternGetDouble(pattern, FC_PIXEL_SIZE, 0, &fontval) ==
+ FcResultMatch) {
+ usedfontsize = fontval;
+ } else if (FcPatternGetDouble(pattern, FC_SIZE, 0, &fontval) ==
+ FcResultMatch) {
+ usedfontsize = -1;
+ } else {
+ /*
+ * Default font size is 12, if none given. This is to
+ * have a known usedfontsize value.
+ */
+ FcPatternAddDouble(pattern, FC_PIXEL_SIZE, 12);
+ usedfontsize = 12;
+ }
+ defaultfontsize = usedfontsize;
+ }
+
+ if (xloadfont(&dc.font, pattern))
+ die("can't open font %s\n", fontstr);
+
+ if (usedfontsize < 0) {
+ FcPatternGetDouble(dc.font.match->pattern,
+ FC_PIXEL_SIZE, 0, &fontval);
+ usedfontsize = fontval;
+ if (fontsize == 0)
+ defaultfontsize = fontval;
+ }
+
+ /* Setting character width and height. */
+ win.cw = ceilf(dc.font.width * cwscale);
+ win.ch = ceilf(dc.font.height * chscale);
+
+ FcPatternDel(pattern, FC_SLANT);
+ FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ITALIC);
+ if (xloadfont(&dc.ifont, pattern))
+ die("can't open font %s\n", fontstr);
+
+ FcPatternDel(pattern, FC_WEIGHT);
+ FcPatternAddInteger(pattern, FC_WEIGHT, FC_WEIGHT_BOLD);
+ if (xloadfont(&dc.ibfont, pattern))
+ die("can't open font %s\n", fontstr);
+
+ FcPatternDel(pattern, FC_SLANT);
+ FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ROMAN);
+ if (xloadfont(&dc.bfont, pattern))
+ die("can't open font %s\n", fontstr);
+
+ FcPatternDestroy(pattern);
+}
+
+void
+xunloadfont(Font *f)
+{
+ XftFontClose(xw.dpy, f->match);
+ FcPatternDestroy(f->pattern);
+ if (f->set)
+ FcFontSetDestroy(f->set);
+}
+
+void
+xunloadfonts(void)
+{
+ /* Free the loaded fonts in the font cache. */
+ while (frclen > 0)
+ XftFontClose(xw.dpy, frc[--frclen].font);
+
+ xunloadfont(&dc.font);
+ xunloadfont(&dc.bfont);
+ xunloadfont(&dc.ifont);
+ xunloadfont(&dc.ibfont);
+}
+
+int
+ximopen(Display *dpy)
+{
+ XIMCallback imdestroy = { .client_data = NULL, .callback = ximdestroy };
+ XICCallback icdestroy = { .client_data = NULL, .callback = xicdestroy };
+
+ xw.ime.xim = XOpenIM(xw.dpy, NULL, NULL, NULL);
+ if (xw.ime.xim == NULL)
+ return 0;
+
+ if (XSetIMValues(xw.ime.xim, XNDestroyCallback, &imdestroy, NULL))
+ fprintf(stderr, "XSetIMValues: "
+ "Could not set XNDestroyCallback.\n");
+
+ xw.ime.spotlist = XVaCreateNestedList(0, XNSpotLocation, &xw.ime.spot,
+ NULL);
+
+ if (xw.ime.xic == NULL) {
+ xw.ime.xic = XCreateIC(xw.ime.xim, XNInputStyle,
+ XIMPreeditNothing | XIMStatusNothing,
+ XNClientWindow, xw.win,
+ XNDestroyCallback, &icdestroy,
+ NULL);
+ }
+ if (xw.ime.xic == NULL)
+ fprintf(stderr, "XCreateIC: Could not create input context.\n");
+
+ return 1;
+}
+
+void
+ximinstantiate(Display *dpy, XPointer client, XPointer call)
+{
+ if (ximopen(dpy))
+ XUnregisterIMInstantiateCallback(xw.dpy, NULL, NULL, NULL,
+ ximinstantiate, NULL);
+}
+
+void
+ximdestroy(XIM xim, XPointer client, XPointer call)
+{
+ xw.ime.xim = NULL;
+ XRegisterIMInstantiateCallback(xw.dpy, NULL, NULL, NULL,
+ ximinstantiate, NULL);
+ XFree(xw.ime.spotlist);
+}
+
+int
+xicdestroy(XIC xim, XPointer client, XPointer call)
+{
+ xw.ime.xic = NULL;
+ return 1;
+}
+
+void
+xinit(int cols, int rows)
+{
+ XGCValues gcvalues;
+ Cursor cursor;
+ Window parent;
+ pid_t thispid = getpid();
+ XColor xmousefg, xmousebg;
+
+ if (!(xw.dpy = XOpenDisplay(NULL)))
+ die("can't open display\n");
+ xw.scr = XDefaultScreen(xw.dpy);
+ xw.vis = XDefaultVisual(xw.dpy, xw.scr);
+
+ /* font */
+ if (!FcInit())
+ die("could not init fontconfig.\n");
+
+ usedfont = (opt_font == NULL)? font : opt_font;
+ xloadfonts(usedfont, 0);
+
+ /* colors */
+ xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
+ xloadcols();
+
+ /* adjust fixed window geometry */
+ win.w = 2 * borderpx + cols * win.cw;
+ win.h = 2 * borderpx + rows * win.ch;
+ if (xw.gm & XNegative)
+ xw.l += DisplayWidth(xw.dpy, xw.scr) - win.w - 2;
+ if (xw.gm & YNegative)
+ xw.t += DisplayHeight(xw.dpy, xw.scr) - win.h - 2;
+
+ /* Events */
+ xw.attrs.background_pixel = dc.col[defaultbg].pixel;
+ xw.attrs.border_pixel = dc.col[defaultbg].pixel;
+ xw.attrs.bit_gravity = NorthWestGravity;
+ xw.attrs.event_mask = FocusChangeMask | KeyPressMask | KeyReleaseMask
+ | ExposureMask | VisibilityChangeMask | StructureNotifyMask
+ | ButtonMotionMask | ButtonPressMask | ButtonReleaseMask;
+ xw.attrs.colormap = xw.cmap;
+
+ if (!(opt_embed && (parent = strtol(opt_embed, NULL, 0))))
+ parent = XRootWindow(xw.dpy, xw.scr);
+ xw.win = XCreateWindow(xw.dpy, parent, xw.l, xw.t,
+ win.w, win.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
+ xw.vis, CWBackPixel | CWBorderPixel | CWBitGravity
+ | CWEventMask | CWColormap, &xw.attrs);
+
+ memset(&gcvalues, 0, sizeof(gcvalues));
+ gcvalues.graphics_exposures = False;
+ dc.gc = XCreateGC(xw.dpy, parent, GCGraphicsExposures,
+ &gcvalues);
+ xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h,
+ DefaultDepth(xw.dpy, xw.scr));
+ XSetForeground(xw.dpy, dc.gc, dc.col[defaultbg].pixel);
+ XFillRectangle(xw.dpy, xw.buf, dc.gc, 0, 0, win.w, win.h);
+
+ /* font spec buffer */
+ xw.specbuf = xmalloc(cols * sizeof(GlyphFontSpec));
+
+ /* Xft rendering context */
+ xw.draw = XftDrawCreate(xw.dpy, xw.buf, xw.vis, xw.cmap);
+
+ /* input methods */
+ if (!ximopen(xw.dpy)) {
+ XRegisterIMInstantiateCallback(xw.dpy, NULL, NULL, NULL,
+ ximinstantiate, NULL);
+ }
+
+ /* white cursor, black outline */
+ cursor = XCreateFontCursor(xw.dpy, mouseshape);
+ XDefineCursor(xw.dpy, xw.win, cursor);
+
+ if (XParseColor(xw.dpy, xw.cmap, colorname[mousefg], &xmousefg) == 0) {
+ xmousefg.red = 0xffff;
+ xmousefg.green = 0xffff;
+ xmousefg.blue = 0xffff;
+ }
+
+ if (XParseColor(xw.dpy, xw.cmap, colorname[mousebg], &xmousebg) == 0) {
+ xmousebg.red = 0x0000;
+ xmousebg.green = 0x0000;
+ xmousebg.blue = 0x0000;
+ }
+
+ XRecolorCursor(xw.dpy, cursor, &xmousefg, &xmousebg);
+
+ xw.xembed = XInternAtom(xw.dpy, "_XEMBED", False);
+ xw.wmdeletewin = XInternAtom(xw.dpy, "WM_DELETE_WINDOW", False);
+ xw.netwmname = XInternAtom(xw.dpy, "_NET_WM_NAME", False);
+ xw.netwmiconname = XInternAtom(xw.dpy, "_NET_WM_ICON_NAME", False);
+ XSetWMProtocols(xw.dpy, xw.win, &xw.wmdeletewin, 1);
+
+ xw.netwmpid = XInternAtom(xw.dpy, "_NET_WM_PID", False);
+ XChangeProperty(xw.dpy, xw.win, xw.netwmpid, XA_CARDINAL, 32,
+ PropModeReplace, (uchar *)&thispid, 1);
+
+ win.mode = MODE_NUMLOCK;
+ resettitle();
+ xhints();
+ XMapWindow(xw.dpy, xw.win);
+ XSync(xw.dpy, False);
+
+ clock_gettime(CLOCK_MONOTONIC, &xsel.tclick1);
+ clock_gettime(CLOCK_MONOTONIC, &xsel.tclick2);
+ xsel.primary = NULL;
+ xsel.clipboard = NULL;
+ xsel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
+ if (xsel.xtarget == None)
+ xsel.xtarget = XA_STRING;
+}
+
+int
+xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int len, int x, int y)
+{
+ float winx = borderpx + x * win.cw, winy = borderpx + y * win.ch, xp, yp;
+ ushort mode, prevmode = USHRT_MAX;
+ Font *font = &dc.font;
+ int frcflags = FRC_NORMAL;
+ float runewidth = win.cw;
+ Rune rune;
+ FT_UInt glyphidx;
+ FcResult fcres;
+ FcPattern *fcpattern, *fontpattern;
+ FcFontSet *fcsets[] = { NULL };
+ FcCharSet *fccharset;
+ int i, f, numspecs = 0;
+
+ for (i = 0, xp = winx, yp = winy + font->ascent; i < len; ++i) {
+ /* Fetch rune and mode for current glyph. */
+ rune = glyphs[i].u;
+ mode = glyphs[i].mode;
+
+ /* Skip dummy wide-character spacing. */
+ if (mode == ATTR_WDUMMY)
+ continue;
+
+ /* Determine font for glyph if different from previous glyph. */
+ if (prevmode != mode) {
+ prevmode = mode;
+ font = &dc.font;
+ frcflags = FRC_NORMAL;
+ runewidth = win.cw * ((mode & ATTR_WIDE) ? 2.0f : 1.0f);
+ if ((mode & ATTR_ITALIC) && (mode & ATTR_BOLD)) {
+ font = &dc.ibfont;
+ frcflags = FRC_ITALICBOLD;
+ } else if (mode & ATTR_ITALIC) {
+ font = &dc.ifont;
+ frcflags = FRC_ITALIC;
+ } else if (mode & ATTR_BOLD) {
+ font = &dc.bfont;
+ frcflags = FRC_BOLD;
+ }
+ yp = winy + font->ascent;
+ }
+
+ /* Lookup character index with default font. */
+ glyphidx = XftCharIndex(xw.dpy, font->match, rune);
+ if (glyphidx) {
+ specs[numspecs].font = font->match;
+ specs[numspecs].glyph = glyphidx;
+ specs[numspecs].x = (short)xp;
+ specs[numspecs].y = (short)yp;
+ xp += runewidth;
+ numspecs++;
+ continue;
+ }
+
+ /* Fallback on font cache, search the font cache for match. */
+ for (f = 0; f < frclen; f++) {
+ glyphidx = XftCharIndex(xw.dpy, frc[f].font, rune);
+ /* Everything correct. */
+ if (glyphidx && frc[f].flags == frcflags)
+ break;
+ /* We got a default font for a not found glyph. */
+ if (!glyphidx && frc[f].flags == frcflags
+ && frc[f].unicodep == rune) {
+ break;
+ }
+ }
+
+ /* Nothing was found. Use fontconfig to find matching font. */
+ if (f >= frclen) {
+ if (!font->set)
+ font->set = FcFontSort(0, font->pattern,
+ 1, 0, &fcres);
+ fcsets[0] = font->set;
+
+ /*
+ * Nothing was found in the cache. Now use
+ * some dozen of Fontconfig calls to get the
+ * font for one single character.
+ *
+ * Xft and fontconfig are design failures.
+ */
+ fcpattern = FcPatternDuplicate(font->pattern);
+ fccharset = FcCharSetCreate();
+
+ FcCharSetAddChar(fccharset, rune);
+ FcPatternAddCharSet(fcpattern, FC_CHARSET,
+ fccharset);
+ FcPatternAddBool(fcpattern, FC_SCALABLE, 1);
+
+ FcConfigSubstitute(0, fcpattern,
+ FcMatchPattern);
+ FcDefaultSubstitute(fcpattern);
+
+ fontpattern = FcFontSetMatch(0, fcsets, 1,
+ fcpattern, &fcres);
+
+ /* Allocate memory for the new cache entry. */
+ if (frclen >= frccap) {
+ frccap += 16;
+ frc = xrealloc(frc, frccap * sizeof(Fontcache));
+ }
+
+ frc[frclen].font = XftFontOpenPattern(xw.dpy,
+ fontpattern);
+ if (!frc[frclen].font)
+ die("XftFontOpenPattern failed seeking fallback font: %s\n",
+ strerror(errno));
+ frc[frclen].flags = frcflags;
+ frc[frclen].unicodep = rune;
+
+ glyphidx = XftCharIndex(xw.dpy, frc[frclen].font, rune);
+
+ f = frclen;
+ frclen++;
+
+ FcPatternDestroy(fcpattern);
+ FcCharSetDestroy(fccharset);
+ }
+
+ specs[numspecs].font = frc[f].font;
+ specs[numspecs].glyph = glyphidx;
+ specs[numspecs].x = (short)xp;
+ specs[numspecs].y = (short)yp;
+ xp += runewidth;
+ numspecs++;
+ }
+
+ return numspecs;
+}
+
+void
+xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len, int x, int y)
+{
+ int charlen = len * ((base.mode & ATTR_WIDE) ? 2 : 1);
+ int winx = borderpx + x * win.cw, winy = borderpx + y * win.ch,
+ width = charlen * win.cw;
+ Color *fg, *bg, *temp, revfg, revbg, truefg, truebg;
+ XRenderColor colfg, colbg;
+ XRectangle r;
+
+ /* Fallback on color display for attributes not supported by the font */
+ if (base.mode & ATTR_ITALIC && base.mode & ATTR_BOLD) {
+ if (dc.ibfont.badslant || dc.ibfont.badweight)
+ base.fg = defaultattr;
+ } else if ((base.mode & ATTR_ITALIC && dc.ifont.badslant) ||
+ (base.mode & ATTR_BOLD && dc.bfont.badweight)) {
+ base.fg = defaultattr;
+ }
+
+ if (IS_TRUECOL(base.fg)) {
+ colfg.alpha = 0xffff;
+ colfg.red = TRUERED(base.fg);
+ colfg.green = TRUEGREEN(base.fg);
+ colfg.blue = TRUEBLUE(base.fg);
+ XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &truefg);
+ fg = &truefg;
+ } else {
+ fg = &dc.col[base.fg];
+ }
+
+ if (IS_TRUECOL(base.bg)) {
+ colbg.alpha = 0xffff;
+ colbg.green = TRUEGREEN(base.bg);
+ colbg.red = TRUERED(base.bg);
+ colbg.blue = TRUEBLUE(base.bg);
+ XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, &truebg);
+ bg = &truebg;
+ } else {
+ bg = &dc.col[base.bg];
+ }
+
+ /* Change basic system colors [0-7] to bright system colors [8-15] */
+ if ((base.mode & ATTR_BOLD_FAINT) == ATTR_BOLD && BETWEEN(base.fg, 0, 7))
+ fg = &dc.col[base.fg + 8];
+
+ if (IS_SET(MODE_REVERSE)) {
+ if (fg == &dc.col[defaultfg]) {
+ fg = &dc.col[defaultbg];
+ } else {
+ colfg.red = ~fg->color.red;
+ colfg.green = ~fg->color.green;
+ colfg.blue = ~fg->color.blue;
+ colfg.alpha = fg->color.alpha;
+ XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg,
+ &revfg);
+ fg = &revfg;
+ }
+
+ if (bg == &dc.col[defaultbg]) {
+ bg = &dc.col[defaultfg];
+ } else {
+ colbg.red = ~bg->color.red;
+ colbg.green = ~bg->color.green;
+ colbg.blue = ~bg->color.blue;
+ colbg.alpha = bg->color.alpha;
+ XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg,
+ &revbg);
+ bg = &revbg;
+ }
+ }
+
+ if ((base.mode & ATTR_BOLD_FAINT) == ATTR_FAINT) {
+ colfg.red = fg->color.red / 2;
+ colfg.green = fg->color.green / 2;
+ colfg.blue = fg->color.blue / 2;
+ colfg.alpha = fg->color.alpha;
+ XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &revfg);
+ fg = &revfg;
+ }
+
+ if (base.mode & ATTR_REVERSE) {
+ temp = fg;
+ fg = bg;
+ bg = temp;
+ }
+
+ if (base.mode & ATTR_BLINK && win.mode & MODE_BLINK)
+ fg = bg;
+
+ if (base.mode & ATTR_INVISIBLE)
+ fg = bg;
+
+ /* Intelligent cleaning up of the borders. */
+ if (x == 0) {
+ xclear(0, (y == 0)? 0 : winy, borderpx,
+ winy + win.ch +
+ ((winy + win.ch >= borderpx + win.th)? win.h : 0));
+ }
+ if (winx + width >= borderpx + win.tw) {
+ xclear(winx + width, (y == 0)? 0 : winy, win.w,
+ ((winy + win.ch >= borderpx + win.th)? win.h : (winy + win.ch)));
+ }
+ if (y == 0)
+ xclear(winx, 0, winx + width, borderpx);
+ if (winy + win.ch >= borderpx + win.th)
+ xclear(winx, winy + win.ch, winx + width, win.h);
+
+ /* Clean up the region we want to draw to. */
+ XftDrawRect(xw.draw, bg, winx, winy, width, win.ch);
+
+ /* Set the clip region because Xft is sometimes dirty. */
+ r.x = 0;
+ r.y = 0;
+ r.height = win.ch;
+ r.width = width;
+ XftDrawSetClipRectangles(xw.draw, winx, winy, &r, 1);
+
+ /* Render the glyphs. */
+ XftDrawGlyphFontSpec(xw.draw, fg, specs, len);
+
+ /* Render underline and strikethrough. */
+ if (base.mode & ATTR_UNDERLINE) {
+ XftDrawRect(xw.draw, fg, winx, winy + dc.font.ascent * chscale + 1,
+ width, 1);
+ }
+
+ if (base.mode & ATTR_STRUCK) {
+ XftDrawRect(xw.draw, fg, winx, winy + 2 * dc.font.ascent * chscale / 3,
+ width, 1);
+ }
+
+ /* Reset clip to none. */
+ XftDrawSetClip(xw.draw, 0);
+}
+
+void
+xdrawglyph(Glyph g, int x, int y)
+{
+ int numspecs;
+ XftGlyphFontSpec spec;
+
+ numspecs = xmakeglyphfontspecs(&spec, &g, 1, x, y);
+ xdrawglyphfontspecs(&spec, g, numspecs, x, y);
+}
+
+void
+xdrawcursor(int cx, int cy, Glyph g, int ox, int oy, Glyph og)
+{
+ Color drawcol;
+
+ /* remove the old cursor */
+ if (selected(ox, oy))
+ og.mode ^= ATTR_REVERSE;
+ xdrawglyph(og, ox, oy);
+
+ if (IS_SET(MODE_HIDE))
+ return;
+
+ /*
+ * Select the right color for the right mode.
+ */
+ g.mode &= ATTR_BOLD|ATTR_ITALIC|ATTR_UNDERLINE|ATTR_STRUCK|ATTR_WIDE;
+
+ if (IS_SET(MODE_REVERSE)) {
+ g.mode |= ATTR_REVERSE;
+ g.bg = defaultfg;
+ if (selected(cx, cy)) {
+ drawcol = dc.col[defaultcs];
+ g.fg = defaultrcs;
+ } else {
+ drawcol = dc.col[defaultrcs];
+ g.fg = defaultcs;
+ }
+ } else {
+ if (selected(cx, cy)) {
+ g.fg = defaultfg;
+ g.bg = defaultrcs;
+ } else {
+ g.fg = defaultbg;
+ g.bg = defaultcs;
+ }
+ drawcol = dc.col[g.bg];
+ }
+
+ /* draw the new one */
+ if (IS_SET(MODE_FOCUSED)) {
+ switch (win.cursor) {
+ case 7: /* st extension */
+ g.u = 0x2603; /* snowman (U+2603) */
+ /* FALLTHROUGH */
+ case 0: /* Blinking Block */
+ case 1: /* Blinking Block (Default) */
+ case 2: /* Steady Block */
+ xdrawglyph(g, cx, cy);
+ break;
+ case 3: /* Blinking Underline */
+ case 4: /* Steady Underline */
+ XftDrawRect(xw.draw, &drawcol,
+ borderpx + cx * win.cw,
+ borderpx + (cy + 1) * win.ch - \
+ cursorthickness,
+ win.cw, cursorthickness);
+ break;
+ case 5: /* Blinking bar */
+ case 6: /* Steady bar */
+ XftDrawRect(xw.draw, &drawcol,
+ borderpx + cx * win.cw,
+ borderpx + cy * win.ch,
+ cursorthickness, win.ch);
+ break;
+ }
+ } else {
+ XftDrawRect(xw.draw, &drawcol,
+ borderpx + cx * win.cw,
+ borderpx + cy * win.ch,
+ win.cw - 1, 1);
+ XftDrawRect(xw.draw, &drawcol,
+ borderpx + cx * win.cw,
+ borderpx + cy * win.ch,
+ 1, win.ch - 1);
+ XftDrawRect(xw.draw, &drawcol,
+ borderpx + (cx + 1) * win.cw - 1,
+ borderpx + cy * win.ch,
+ 1, win.ch - 1);
+ XftDrawRect(xw.draw, &drawcol,
+ borderpx + cx * win.cw,
+ borderpx + (cy + 1) * win.ch - 1,
+ win.cw, 1);
+ }
+}
+
+void
+xsetenv(void)
+{
+ char buf[sizeof(long) * 8 + 1];
+
+ snprintf(buf, sizeof(buf), "%lu", xw.win);
+ setenv("WINDOWID", buf, 1);
+}
+
+void
+xseticontitle(char *p)
+{
+ XTextProperty prop;
+ DEFAULT(p, opt_title);
+
+ if (Xutf8TextListToTextProperty(xw.dpy, &p, 1, XUTF8StringStyle,
+ &prop) != Success)
+ return;
+ XSetWMIconName(xw.dpy, xw.win, &prop);
+ XSetTextProperty(xw.dpy, xw.win, &prop, xw.netwmiconname);
+ XFree(prop.value);
+}
+
+void
+xsettitle(char *p)
+{
+ XTextProperty prop;
+ DEFAULT(p, opt_title);
+
+ if (Xutf8TextListToTextProperty(xw.dpy, &p, 1, XUTF8StringStyle,
+ &prop) != Success)
+ return;
+ XSetWMName(xw.dpy, xw.win, &prop);
+ XSetTextProperty(xw.dpy, xw.win, &prop, xw.netwmname);
+ XFree(prop.value);
+}
+
+int
+xstartdraw(void)
+{
+ return IS_SET(MODE_VISIBLE);
+}
+
+void
+xdrawline(Line line, int x1, int y1, int x2)
+{
+ int i, x, ox, numspecs;
+ Glyph base, new;
+ XftGlyphFontSpec *specs = xw.specbuf;
+
+ numspecs = xmakeglyphfontspecs(specs, &line[x1], x2 - x1, x1, y1);
+ i = ox = 0;
+ for (x = x1; x < x2 && i < numspecs; x++) {
+ new = line[x];
+ if (new.mode == ATTR_WDUMMY)
+ continue;
+ if (selected(x, y1))
+ new.mode ^= ATTR_REVERSE;
+ if (i > 0 && ATTRCMP(base, new)) {
+ xdrawglyphfontspecs(specs, base, i, ox, y1);
+ specs += i;
+ numspecs -= i;
+ i = 0;
+ }
+ if (i == 0) {
+ ox = x;
+ base = new;
+ }
+ i++;
+ }
+ if (i > 0)
+ xdrawglyphfontspecs(specs, base, i, ox, y1);
+}
+
+void
+xfinishdraw(void)
+{
+ XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, 0, 0, win.w,
+ win.h, 0, 0);
+ XSetForeground(xw.dpy, dc.gc,
+ dc.col[IS_SET(MODE_REVERSE)?
+ defaultfg : defaultbg].pixel);
+}
+
+void
+xximspot(int x, int y)
+{
+ if (xw.ime.xic == NULL)
+ return;
+
+ xw.ime.spot.x = borderpx + x * win.cw;
+ xw.ime.spot.y = borderpx + (y + 1) * win.ch;
+
+ XSetICValues(xw.ime.xic, XNPreeditAttributes, xw.ime.spotlist, NULL);
+}
+
+void
+expose(XEvent *ev)
+{
+ redraw();
+}
+
+void
+visibility(XEvent *ev)
+{
+ XVisibilityEvent *e = &ev->xvisibility;
+
+ MODBIT(win.mode, e->state != VisibilityFullyObscured, MODE_VISIBLE);
+}
+
+void
+unmap(XEvent *ev)
+{
+ win.mode &= ~MODE_VISIBLE;
+}
+
+void
+xsetpointermotion(int set)
+{
+ MODBIT(xw.attrs.event_mask, set, PointerMotionMask);
+ XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask, &xw.attrs);
+}
+
+void
+xsetmode(int set, unsigned int flags)
+{
+ int mode = win.mode;
+ MODBIT(win.mode, set, flags);
+ if ((win.mode & MODE_REVERSE) != (mode & MODE_REVERSE))
+ redraw();
+}
+
+int
+xsetcursor(int cursor)
+{
+ if (!BETWEEN(cursor, 0, 7)) /* 7: st extension */
+ return 1;
+ win.cursor = cursor;
+ return 0;
+}
+
+void
+xseturgency(int add)
+{
+ XWMHints *h = XGetWMHints(xw.dpy, xw.win);
+
+ MODBIT(h->flags, add, XUrgencyHint);
+ XSetWMHints(xw.dpy, xw.win, h);
+ XFree(h);
+}
+
+void
+xbell(void)
+{
+ if (!(IS_SET(MODE_FOCUSED)))
+ xseturgency(1);
+ if (bellvolume)
+ XkbBell(xw.dpy, xw.win, bellvolume, (Atom)NULL);
+}
+
+void
+focus(XEvent *ev)
+{
+ XFocusChangeEvent *e = &ev->xfocus;
+
+ if (e->mode == NotifyGrab)
+ return;
+
+ if (ev->type == FocusIn) {
+ if (xw.ime.xic)
+ XSetICFocus(xw.ime.xic);
+ win.mode |= MODE_FOCUSED;
+ xseturgency(0);
+ if (IS_SET(MODE_FOCUS))
+ ttywrite("\033[I", 3, 0);
+ } else {
+ if (xw.ime.xic)
+ XUnsetICFocus(xw.ime.xic);
+ win.mode &= ~MODE_FOCUSED;
+ if (IS_SET(MODE_FOCUS))
+ ttywrite("\033[O", 3, 0);
+ }
+}
+
+int
+match(uint mask, uint state)
+{
+ return mask == XK_ANY_MOD || mask == (state & ~ignoremod);
+}
+
+char*
+kmap(KeySym k, uint state)
+{
+ Key *kp;
+ int i;
+
+ /* Check for mapped keys out of X11 function keys. */
+ for (i = 0; i < LEN(mappedkeys); i++) {
+ if (mappedkeys[i] == k)
+ break;
+ }
+ if (i == LEN(mappedkeys)) {
+ if ((k & 0xFFFF) < 0xFD00)
+ return NULL;
+ }
+
+ for (kp = key; kp < key + LEN(key); kp++) {
+ if (kp->k != k)
+ continue;
+
+ if (!match(kp->mask, state))
+ continue;
+
+ if (IS_SET(MODE_APPKEYPAD) ? kp->appkey < 0 : kp->appkey > 0)
+ continue;
+ if (IS_SET(MODE_NUMLOCK) && kp->appkey == 2)
+ continue;
+
+ if (IS_SET(MODE_APPCURSOR) ? kp->appcursor < 0 : kp->appcursor > 0)
+ continue;
+
+ return kp->s;
+ }
+
+ return NULL;
+}
+
+void
+kpress(XEvent *ev)
+{
+ XKeyEvent *e = &ev->xkey;
+ KeySym ksym = NoSymbol;
+ char buf[64], *customkey;
+ int len;
+ Rune c;
+ Status status;
+ Shortcut *bp;
+
+ if (IS_SET(MODE_KBDLOCK))
+ return;
+
+ if (xw.ime.xic) {
+ len = XmbLookupString(xw.ime.xic, e, buf, sizeof buf, &ksym, &status);
+ if (status == XBufferOverflow)
+ return;
+ } else {
+ len = XLookupString(e, buf, sizeof buf, &ksym, NULL);
+ }
+ /* 1. shortcuts */
+ for (bp = shortcuts; bp < shortcuts + LEN(shortcuts); bp++) {
+ if (ksym == bp->keysym && match(bp->mod, e->state)) {
+ bp->func(&(bp->arg));
+ return;
+ }
+ }
+
+ /* 2. custom keys from config.h */
+ if ((customkey = kmap(ksym, e->state))) {
+ ttywrite(customkey, strlen(customkey), 1);
+ return;
+ }
+
+ /* 3. composed string from input method */
+ if (len == 0)
+ return;
+ if (len == 1 && e->state & Mod1Mask) {
+ if (IS_SET(MODE_8BIT)) {
+ if (*buf < 0177) {
+ c = *buf | 0x80;
+ len = utf8encode(c, buf);
+ }
+ } else {
+ buf[1] = buf[0];
+ buf[0] = '\033';
+ len = 2;
+ }
+ }
+ ttywrite(buf, len, 1);
+}
+
+void
+cmessage(XEvent *e)
+{
+ /*
+ * See xembed specs
+ * http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html
+ */
+ if (e->xclient.message_type == xw.xembed && e->xclient.format == 32) {
+ if (e->xclient.data.l[1] == XEMBED_FOCUS_IN) {
+ win.mode |= MODE_FOCUSED;
+ xseturgency(0);
+ } else if (e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
+ win.mode &= ~MODE_FOCUSED;
+ }
+ } else if (e->xclient.data.l[0] == xw.wmdeletewin) {
+ ttyhangup();
+ exit(0);
+ }
+}
+
+void
+resize(XEvent *e)
+{
+ if (e->xconfigure.width == win.w && e->xconfigure.height == win.h)
+ return;
+
+ cresize(e->xconfigure.width, e->xconfigure.height);
+}
+
+void
+run(void)
+{
+ XEvent ev;
+ int w = win.w, h = win.h;
+ fd_set rfd;
+ int xfd = XConnectionNumber(xw.dpy), ttyfd, xev, drawing;
+ struct timespec seltv, *tv, now, lastblink, trigger;
+ double timeout;
+
+ /* Waiting for window mapping */
+ do {
+ XNextEvent(xw.dpy, &ev);
+ /*
+ * This XFilterEvent call is required because of XOpenIM. It
+ * does filter out the key event and some client message for
+ * the input method too.
+ */
+ if (XFilterEvent(&ev, None))
+ continue;
+ if (ev.type == ConfigureNotify) {
+ w = ev.xconfigure.width;
+ h = ev.xconfigure.height;
+ }
+ } while (ev.type != MapNotify);
+
+ ttyfd = ttynew(opt_line, shell, opt_io, opt_cmd);
+ cresize(w, h);
+
+ for (timeout = -1, drawing = 0, lastblink = (struct timespec){0};;) {
+ FD_ZERO(&rfd);
+ FD_SET(ttyfd, &rfd);
+ FD_SET(xfd, &rfd);
+
+ if (XPending(xw.dpy))
+ timeout = 0; /* existing events might not set xfd */
+
+ seltv.tv_sec = timeout / 1E3;
+ seltv.tv_nsec = 1E6 * (timeout - 1E3 * seltv.tv_sec);
+ tv = timeout >= 0 ? &seltv : NULL;
+
+ if (pselect(MAX(xfd, ttyfd)+1, &rfd, NULL, NULL, tv, NULL) < 0) {
+ if (errno == EINTR)
+ continue;
+ die("select failed: %s\n", strerror(errno));
+ }
+ clock_gettime(CLOCK_MONOTONIC, &now);
+
+ if (FD_ISSET(ttyfd, &rfd))
+ ttyread();
+
+ xev = 0;
+ while (XPending(xw.dpy)) {
+ xev = 1;
+ XNextEvent(xw.dpy, &ev);
+ if (XFilterEvent(&ev, None))
+ continue;
+ if (handler[ev.type])
+ (handler[ev.type])(&ev);
+ }
+
+ /*
+ * To reduce flicker and tearing, when new content or event
+ * triggers drawing, we first wait a bit to ensure we got
+ * everything, and if nothing new arrives - we draw.
+ * We start with trying to wait minlatency ms. If more content
+ * arrives sooner, we retry with shorter and shorter periods,
+ * and eventually draw even without idle after maxlatency ms.
+ * Typically this results in low latency while interacting,
+ * maximum latency intervals during `cat huge.txt`, and perfect
+ * sync with periodic updates from animations/key-repeats/etc.
+ */
+ if (FD_ISSET(ttyfd, &rfd) || xev) {
+ if (!drawing) {
+ trigger = now;
+ drawing = 1;
+ }
+ timeout = (maxlatency - TIMEDIFF(now, trigger)) \
+ / maxlatency * minlatency;
+ if (timeout > 0)
+ continue; /* we have time, try to find idle */
+ }
+
+ /* idle detected or maxlatency exhausted -> draw */
+ timeout = -1;
+ if (blinktimeout && tattrset(ATTR_BLINK)) {
+ timeout = blinktimeout - TIMEDIFF(now, lastblink);
+ if (timeout <= 0) {
+ if (-timeout > blinktimeout) /* start visible */
+ win.mode |= MODE_BLINK;
+ win.mode ^= MODE_BLINK;
+ tsetdirtattr(ATTR_BLINK);
+ lastblink = now;
+ timeout = blinktimeout;
+ }
+ }
+
+ draw();
+ XFlush(xw.dpy);
+ drawing = 0;
+ }
+}
+
+void
+usage(void)
+{
+ die("usage: %s [-aiv] [-c class] [-f font] [-g geometry]"
+ " [-n name] [-o file]\n"
+ " [-T title] [-t title] [-w windowid]"
+ " [[-e] command [args ...]]\n"
+ " %s [-aiv] [-c class] [-f font] [-g geometry]"
+ " [-n name] [-o file]\n"
+ " [-T title] [-t title] [-w windowid] -l line"
+ " [stty_args ...]\n", argv0, argv0);
+}
+
+int
+main(int argc, char *argv[])
+{
+ xw.l = xw.t = 0;
+ xw.isfixed = False;
+ xsetcursor(cursorshape);
+
+ ARGBEGIN {
+ case 'a':
+ allowaltscreen = 0;
+ break;
+ case 'c':
+ opt_class = EARGF(usage());
+ break;
+ case 'e':
+ if (argc > 0)
+ --argc, ++argv;
+ goto run;
+ case 'f':
+ opt_font = EARGF(usage());
+ break;
+ case 'g':
+ xw.gm = XParseGeometry(EARGF(usage()),
+ &xw.l, &xw.t, &cols, &rows);
+ break;
+ case 'i':
+ xw.isfixed = 1;
+ break;
+ case 'o':
+ opt_io = EARGF(usage());
+ break;
+ case 'l':
+ opt_line = EARGF(usage());
+ break;
+ case 'n':
+ opt_name = EARGF(usage());
+ break;
+ case 't':
+ case 'T':
+ opt_title = EARGF(usage());
+ break;
+ case 'w':
+ opt_embed = EARGF(usage());
+ break;
+ case 'v':
+ die("%s " VERSION "\n", argv0);
+ break;
+ default:
+ usage();
+ } ARGEND;
+
+run:
+ if (argc > 0) /* eat all remaining arguments */
+ opt_cmd = argv;
+
+ if (!opt_title)
+ opt_title = (opt_line || !opt_cmd) ? "st" : opt_cmd[0];
+
+ setlocale(LC_CTYPE, "");
+ XSetLocaleModifiers("");
+ cols = MAX(cols, 1);
+ rows = MAX(rows, 1);
+ tnew(cols, rows);
+ xinit(cols, rows);
+ xsetenv();
+ selinit();
+ run();
+
+ return 0;
+}
diff --git a/st/x.o b/st/x.o
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