Merge pull request 'patch: systray added to dwm' (#3) from systray into master

Reviewed-on: #3

.gitignore

@@ -0,0 +1,2 @@
+*.o
+config.h

LICENSE

@@ -17,6 +17,7 @@ MIT/X Consortium License
 © 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"),

Makefile

@@ -6,13 +6,7 @@ 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}"
+all: dwm
 
 .c.o:
 	${CC} -c ${CFLAGS} $<
@@ -48,4 +42,4 @@ uninstall:
 	rm -f ${DESTDIR}${PREFIX}/bin/dwm\
 		${DESTDIR}${MANPREFIX}/man1/dwm.1
 
-.PHONY: all options clean dist install uninstall
+.PHONY: all clean dist install uninstall

config.def.h

@@ -1,17 +1,28 @@
 /* See LICENSE file for copyright and license details. */
 
 /* appearance */
-static const unsigned int borderpx  = 1;        /* border pixel of windows */
+static const unsigned int borderpx  = 2;        /* border pixel of windows */
+static const unsigned int gappx     = 6;        /* gaps between 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" };
+static const char *fonts[]          = { "JetBrainsMono Nerd Font:size=14" };
 static const char dmenufont[]       = "monospace:size=10";
-static const char col_gray1[]       = "#222222";
+// background colour
+static const char col_gray1[]       = "#440E50";
+// inactive window border colour
 static const char col_gray2[]       = "#444444";
+// font colour
 static const char col_gray3[]       = "#bbbbbb";
+// current tag and current window font colour
 static const char col_gray4[]       = "#eeeeee";
-static const char col_cyan[]        = "#005577";
+// Top bar second colour and active window border colour
+static const char col_cyan[]        = "#1F0B4B";
 static const char *colors[][3]      = {
 	/*               fg         bg         border   */
 	[SchemeNorm] = { col_gray3, col_gray1, col_gray2 },
@@ -35,6 +46,8 @@ static const Rule rules[] = {
 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 int refreshrate = 120;  /* refresh rate (per second) for client move/resize */
 
 static const Layout layouts[] = {
 	/* symbol     arrange function */
@@ -44,7 +57,7 @@ static const Layout layouts[] = {
 };
 
 /* key definitions */
-#define MODKEY Mod1Mask
+#define MODKEY Mod4Mask
 #define TAGKEYS(KEY,TAG) \
 	{ MODKEY,                       KEY,      view,           {.ui = 1 << TAG} }, \
 	{ MODKEY|ControlMask,           KEY,      toggleview,     {.ui = 1 << TAG} }, \
@@ -57,13 +70,18 @@ static const Layout layouts[] = {
 /* 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_cyan, "-sf", col_gray4, NULL };
+static const char *rofi[] = {"rofi", "-show", "drun", "-show-emojis", NULL};
+static const char *browser[] = {"brave"};
 static const char *termcmd[]  = { "st", NULL };
+static const char *alatty[] = {"alacritty", NULL};
 
-static Key keys[] = {
+static const Key keys[] = {
 	/* modifier                     key        function        argument */
-	{ MODKEY,                       XK_p,      spawn,          {.v = dmenucmd } },
+	{ MODKEY,                       XK_p,      spawn,          {.v = rofi } },
 	{ MODKEY|ShiftMask,             XK_Return, spawn,          {.v = termcmd } },
+	{ MODKEY|ControlMask,           XK_Return, spawn,          {.v = alatty } },
 	{ MODKEY,                       XK_b,      togglebar,      {0} },
+	{ MODKEY|ShiftMask,             XK_b,      spawn,          {.v = browser } },
 	{ MODKEY,                       XK_j,      focusstack,     {.i = +1 } },
 	{ MODKEY,                       XK_k,      focusstack,     {.i = -1 } },
 	{ MODKEY,                       XK_i,      incnmaster,     {.i = +1 } },
@@ -84,6 +102,9 @@ static 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)
@@ -98,7 +119,7 @@ static Key keys[] = {
 
 /* button definitions */
 /* click can be ClkTagBar, ClkLtSymbol, ClkStatusText, ClkWinTitle, ClkClientWin, or ClkRootWin */
-static Button buttons[] = {
+static const Button buttons[] = {
 	/* click                event mask      button          function        argument */
 	{ ClkLtSymbol,          0,              Button1,        setlayout,      {0} },
 	{ ClkLtSymbol,          0,              Button3,        setlayout,      {.v = &layouts[2]} },

config.mk

@@ -1,5 +1,5 @@
 # dwm version
-VERSION = 6.2
+VERSION = 6.6
 
 # Customize below to fit your system
 
@@ -19,13 +19,14 @@ FREETYPELIBS = -lfontconfig -lXft
 FREETYPEINC = /usr/include/freetype2
 # OpenBSD (uncomment)
 #FREETYPEINC = ${X11INC}/freetype2
+#MANPREFIX = ${PREFIX}/man
 
 # includes and libs
 INCS = -I${X11INC} -I${FREETYPEINC}
 LIBS = -L${X11LIB} -lX11 ${XINERAMALIBS} ${FREETYPELIBS}
 
 # flags
-CPPFLAGS = -D_DEFAULT_SOURCE -D_BSD_SOURCE -D_POSIX_C_SOURCE=2 -DVERSION=\"${VERSION}\" ${XINERAMAFLAGS}
+CPPFLAGS = -D_DEFAULT_SOURCE -D_BSD_SOURCE -D_XOPEN_SOURCE=700L -DVERSION=\"${VERSION}\" ${XINERAMAFLAGS}
 #CFLAGS   = -g -std=c99 -pedantic -Wall -O0 ${INCS} ${CPPFLAGS}
 CFLAGS   = -std=c99 -pedantic -Wall -Wno-deprecated-declarations -Os ${INCS} ${CPPFLAGS}
 LDFLAGS  = ${LIBS}

drw.c

@@ -9,54 +9,40 @@
 #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)
+static int
+utf8decode(const char *s_in, long *u, int *err)
 {
-	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;
+	static const unsigned char lens[] = {
+		/* 0XXXX */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+		/* 10XXX */ 0, 0, 0, 0, 0, 0, 0, 0,  /* invalid */
+		/* 110XX */ 2, 2, 2, 2,
+		/* 1110X */ 3, 3,
+		/* 11110 */ 4,
+		/* 11111 */ 0,  /* invalid */
+	};
+	static const unsigned char leading_mask[] = { 0x7F, 0x1F, 0x0F, 0x07 };
+	static const unsigned int overlong[] = { 0x0, 0x80, 0x0800, 0x10000 };
 
+	const unsigned char *s = (const unsigned char *)s_in;
+	int len = lens[*s >> 3];
 	*u = UTF_INVALID;
-	if (!clen)
-		return 0;
-	udecoded = utf8decodebyte(c[0], &len);
-	if (!BETWEEN(len, 1, UTF_SIZ))
+	*err = 1;
+	if (len == 0)
 		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);
 
+	long cp = s[0] & leading_mask[len - 1];
+	for (int i = 1; i < len; ++i) {
+		if (s[i] == '\0' || (s[i] & 0xC0) != 0x80)
+			return i;
+		cp = (cp << 6) | (s[i] & 0x3F);
+	}
+	/* out of range, surrogate, overlong encoding */
+	if (cp > 0x10FFFF || (cp >> 11) == 0x1B || cp < overlong[len - 1])
+		return len;
+
+	*err = 0;
+	*u = cp;
 	return len;
 }
 
@@ -95,6 +81,7 @@ drw_free(Drw *drw)
 {
 	XFreePixmap(drw->dpy, drw->drawable);
 	XFreeGC(drw->dpy, drw->gc);
+	drw_fontset_free(drw->fonts);
 	free(drw);
 }
 
@@ -132,19 +119,6 @@ xfont_create(Drw *drw, const char *fontname, FcPattern *fontpattern)
 		die("no font specified.");
 	}
 
-	/* Do not allow using color fonts. This is a workaround for a BadLength
-	 * error from Xft with color glyphs. Modelled on the Xterm workaround. See
-	 * https://bugzilla.redhat.com/show_bug.cgi?id=1498269
-	 * https://lists.suckless.org/dev/1701/30932.html
-	 * https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=916349
-	 * and lots more all over the internet.
-	 */
-	FcBool iscol;
-	if(FcPatternGetBool(xfont->pattern, FC_COLOR, 0, &iscol) == FcResultMatch && iscol) {
-		XftFontClose(drw->dpy, xfont);
-		return NULL;
-	}
-
 	font = ecalloc(1, sizeof(Fnt));
 	font->xfont = xfont;
 	font->pattern = pattern;
@@ -204,8 +178,7 @@ drw_clr_create(Drw *drw, Clr *dest, const char *clrname)
 		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. */
+/* Create color schemes. */
 Clr *
 drw_scm_create(Drw *drw, const char *clrnames[], size_t clrcount)
 {
@@ -213,7 +186,7 @@ drw_scm_create(Drw *drw, const char *clrnames[], size_t clrcount)
 	Clr *ret;
 
 	/* need at least two colors for a scheme */
-	if (!drw || !clrnames || clrcount < 2 || !(ret = ecalloc(clrcount, sizeof(XftColor))))
+	if (!drw || !clrnames || clrcount < 2 || !(ret = ecalloc(clrcount, sizeof(Clr))))
 		return NULL;
 
 	for (i = 0; i < clrcount; i++)
@@ -221,6 +194,30 @@ drw_scm_create(Drw *drw, const char *clrnames[], size_t clrcount)
 	return ret;
 }
 
+void
+drw_clr_free(Drw *drw, Clr *c)
+{
+	if (!drw || !c)
+		return;
+
+	/* c is typedef XftColor Clr */
+	XftColorFree(drw->dpy, DefaultVisual(drw->dpy, drw->screen),
+	             DefaultColormap(drw->dpy, drw->screen), c);
+}
+
+void
+drw_scm_free(Drw *drw, Clr *scm, size_t clrcount)
+{
+	size_t i;
+
+	if (!drw || !scm)
+		return;
+
+	for (i = 0; i < clrcount; i++)
+		drw_clr_free(drw, &scm[i]);
+	free(scm);
+}
+
 void
 drw_setfontset(Drw *drw, Fnt *set)
 {
@@ -250,29 +247,32 @@ drw_rect(Drw *drw, int x, int y, unsigned int w, unsigned int h, int filled, int
 int
 drw_text(Drw *drw, int x, int y, unsigned int w, unsigned int h, unsigned int lpad, const char *text, int invert)
 {
-	char buf[1024];
-	int ty;
-	unsigned int ew;
+	int ty, ellipsis_x = 0;
+	unsigned int tmpw, ew, ellipsis_w = 0, ellipsis_len, hash, h0, h1;
 	XftDraw *d = NULL;
 	Fnt *usedfont, *curfont, *nextfont;
-	size_t i, len;
-	int utf8strlen, utf8charlen, render = x || y || w || h;
+	int utf8strlen, utf8charlen, utf8err, render = x || y || w || h;
 	long utf8codepoint = 0;
 	const char *utf8str;
 	FcCharSet *fccharset;
 	FcPattern *fcpattern;
 	FcPattern *match;
 	XftResult result;
-	int charexists = 0;
+	int charexists = 0, overflow = 0;
+	/* keep track of a couple codepoints for which we have no match. */
+	static unsigned int nomatches[128], ellipsis_width, invalid_width;
+	static const char invalid[] = "<EFBFBD>";
 
-	if (!drw || (render && !drw->scheme) || !text || !drw->fonts)
+	if (!drw || (render && (!drw->scheme || !w)) || !text || !drw->fonts)
 		return 0;
 
 	if (!render) {
-		w = ~w;
+		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);
+		if (w < lpad)
+			return x + w;
 		d = XftDrawCreate(drw->dpy, drw->drawable,
 		                  DefaultVisual(drw->dpy, drw->screen),
 		                  DefaultColormap(drw->dpy, drw->screen));
@@ -281,18 +281,40 @@ drw_text(Drw *drw, int x, int y, unsigned int w, unsigned int h, unsigned int lp
 	}
 
 	usedfont = drw->fonts;
+	if (!ellipsis_width && render)
+		ellipsis_width = drw_fontset_getwidth(drw, "...");
+	if (!invalid_width && render)
+		invalid_width = drw_fontset_getwidth(drw, invalid);
 	while (1) {
-		utf8strlen = 0;
+		ew = ellipsis_len = utf8err = utf8charlen = utf8strlen = 0;
 		utf8str = text;
 		nextfont = NULL;
 		while (*text) {
-			utf8charlen = utf8decode(text, &utf8codepoint, UTF_SIZ);
+			utf8charlen = utf8decode(text, &utf8codepoint, &utf8err);
 			for (curfont = drw->fonts; curfont; curfont = curfont->next) {
 				charexists = charexists || XftCharExists(drw->dpy, curfont->xfont, utf8codepoint);
 				if (charexists) {
-					if (curfont == usedfont) {
-						utf8strlen += utf8charlen;
+					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) {
 						text += utf8charlen;
+						utf8strlen += utf8err ? 0 : utf8charlen;
+						ew += utf8err ? 0 : tmpw;
 					} else {
 						nextfont = curfont;
 					}
@@ -300,36 +322,31 @@ drw_text(Drw *drw, int x, int y, unsigned int w, unsigned int h, unsigned int lp
 				}
 			}
 
-			if (!charexists || nextfont)
+			if (overflow || !charexists || nextfont || utf8err)
 				break;
 			else
 				charexists = 0;
 		}
 
 		if (utf8strlen) {
-			drw_font_getexts(usedfont, utf8str, utf8strlen, &ew, NULL);
-			/* shorten text if necessary */
-			for (len = MIN(utf8strlen, sizeof(buf) - 1); len && ew > w; len--)
-				drw_font_getexts(usedfont, utf8str, len, &ew, NULL);
-
-			if (len) {
-				memcpy(buf, utf8str, len);
-				buf[len] = '\0';
-				if (len < utf8strlen)
-					for (i = len; i && i > len - 3; buf[--i] = '.')
-						; /* NOP */
-
-				if (render) {
-					ty = y + (h - usedfont->h) / 2 + usedfont->xfont->ascent;
-					XftDrawStringUtf8(d, &drw->scheme[invert ? ColBg : ColFg],
-					                  usedfont->xfont, x, ty, (XftChar8 *)buf, len);
-				}
-				x += ew;
-				w -= ew;
+			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 (utf8err && (!render || invalid_width < w)) {
+			if (render)
+				drw_text(drw, x, y, w, h, 0, invalid, invert);
+			x += invalid_width;
+			w -= invalid_width;
+		}
+		if (render && overflow)
+			drw_text(drw, ellipsis_x, y, ellipsis_w, h, 0, "...", invert);
 
-		if (!*text) {
+		if (!*text || overflow) {
 			break;
 		} else if (nextfont) {
 			charexists = 0;
@@ -339,6 +356,15 @@ drw_text(Drw *drw, int x, int y, unsigned int w, unsigned int h, unsigned int lp
 			 * character must be drawn. */
 			charexists = 1;
 
+			hash = (unsigned int)utf8codepoint;
+			hash = ((hash >> 16) ^ hash) * 0x21F0AAAD;
+			hash = ((hash >> 15) ^ hash) * 0xD35A2D97;
+			h0 = ((hash >> 15) ^ hash) % LENGTH(nomatches);
+			h1 = (hash >> 17) % LENGTH(nomatches);
+			/* avoid expensive XftFontMatch call when we know we won't find a match */
+			if (nomatches[h0] == utf8codepoint || nomatches[h1] == utf8codepoint)
+				goto no_match;
+
 			fccharset = FcCharSetCreate();
 			FcCharSetAddChar(fccharset, utf8codepoint);
 
@@ -350,7 +376,6 @@ drw_text(Drw *drw, int x, int y, unsigned int w, unsigned int h, unsigned int lp
 			fcpattern = FcPatternDuplicate(drw->fonts->pattern);
 			FcPatternAddCharSet(fcpattern, FC_CHARSET, fccharset);
 			FcPatternAddBool(fcpattern, FC_SCALABLE, FcTrue);
-			FcPatternAddBool(fcpattern, FC_COLOR, FcFalse);
 
 			FcConfigSubstitute(NULL, fcpattern, FcMatchPattern);
 			FcDefaultSubstitute(fcpattern);
@@ -367,6 +392,8 @@ drw_text(Drw *drw, int x, int y, unsigned int w, unsigned int h, unsigned int lp
 					curfont->next = usedfont;
 				} else {
 					xfont_free(usedfont);
+					nomatches[nomatches[h0] ? h1 : h0] = utf8codepoint;
+no_match:
 					usedfont = drw->fonts;
 				}
 			}
@@ -396,6 +423,15 @@ drw_fontset_getwidth(Drw *drw, const char *text)
 	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)
 {

drw.h

@@ -35,11 +35,14 @@ void drw_free(Drw *drw);
 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);
+void drw_clr_free(Drw *drw, Clr *c);
 Clr *drw_scm_create(Drw *drw, const char *clrnames[], size_t clrcount);
+void drw_scm_free(Drw *drw, Clr *scm, size_t clrcount);
 
 /* Cursor abstraction */
 Cur *drw_cur_create(Drw *drw, int shape);

dwm.1

@@ -30,10 +30,18 @@ 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.
+.P
+On start, dwm can start additional programs that may be specified in two special
+shell scripts (see the FILES section below), autostart_blocking.sh and
+autostart.sh.  The former is executed first and dwm will wait for its
+termination before starting.  The latter is executed in the background before
+dwm enters its handler loop.
+.P
+Either of these files may be omitted.
 .SH OPTIONS
 .TP
 .B \-v
-prints version information to standard output, then exits.
+prints version information to stderr, then exits.
 .SH USAGE
 .SS Status bar
 .TP
@@ -152,6 +160,21 @@ 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 FILES
+The files containing programs to be started along with dwm are searched for in
+the following directories:
+.IP "1. $XDG_DATA_HOME/dwm"
+.IP "2. $HOME/.local/share/dwm"
+.IP "3. $HOME/.dwm"
+.P
+The first existing directory is scanned for any of the autostart files below.
+.TP 15
+autostart.sh
+This file is started as a shell background process before dwm enters its handler
+loop.
+.TP 15
+autostart_blocking.sh
+This file is started before any autostart.sh; dwm waits for its termination.
 .SH CUSTOMIZATION
 dwm is customized by creating a custom config.h and (re)compiling the source
 code. This keeps it fast, secure and simple.

patches/dwm-autostart-20210120-cb3f58a.diff

@@ -0,0 +1,179 @@
+From 37e970479dc5d40e57fc0cbfeaa5e39941483237 Mon Sep 17 00:00:00 2001
+From: Gan Ainm <gan.ainm.riomhphost@gmail.com>
+Date: Wed, 10 Jun 2020 10:59:02 +0000
+Subject: [PATCH] dwm-xdgautostart-6.2.diff
+
+===================================================================
+---
+ dwm.1 | 23 +++++++++++++++++
+ dwm.c | 82 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+ 2 files changed, 105 insertions(+)
+
+diff --git a/dwm.1 b/dwm.1
+index 13b3729..9533aa6 100644
+--- a/dwm.1
++++ b/dwm.1
+@@ -30,6 +30,14 @@ 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.
++.P
++On start, dwm can start additional programs that may be specified in two special
++shell scripts (see the FILES section below), autostart_blocking.sh and
++autostart.sh.  The former is executed first and dwm will wait for its
++termination before starting.  The latter is executed in the background before
++dwm enters its handler loop.
++.P
++Either of these files may be omitted.
+ .SH OPTIONS
+ .TP
+ .B \-v
+@@ -152,6 +160,21 @@ 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 FILES
++The files containing programs to be started along with dwm are searched for in
++the following directories:
++.IP "1. $XDG_DATA_HOME/dwm"
++.IP "2. $HOME/.local/share/dwm"
++.IP "3. $HOME/.dwm"
++.P
++The first existing directory is scanned for any of the autostart files below.
++.TP 15
++autostart.sh
++This file is started as a shell background process before dwm enters its handler
++loop.
++.TP 15
++autostart_blocking.sh
++This file is started before any autostart.sh; dwm waits for its termination.
+ .SH CUSTOMIZATION
+ dwm is customized by creating a custom config.h and (re)compiling the source
+ code. This keeps it fast, secure and simple.
+diff --git a/dwm.c b/dwm.c
+index 4465af1..2156b49 100644
+--- a/dwm.c
++++ b/dwm.c
+@@ -29,6 +29,7 @@
+ #include <string.h>
+ #include <unistd.h>
+ #include <sys/types.h>
++#include <sys/stat.h>
+ #include <sys/wait.h>
+ #include <X11/cursorfont.h>
+ #include <X11/keysym.h>
+@@ -193,6 +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);
+@@ -235,7 +237,11 @@ static int xerrorstart(Display *dpy, XErrorEvent *ee);
+ static void zoom(const Arg *arg);
+ 
+ /* variables */
++static const char autostartblocksh[] = "autostart_blocking.sh";
++static const char autostartsh[] = "autostart.sh";
+ static const char broken[] = "broken";
++static const char dwmdir[] = "dwm";
++static const char localshare[] = ".local/share";
+ static char stext[256];
+ static int screen;
+ static int sw, sh;           /* X display screen geometry width, height */
+@@ -1380,6 +1386,83 @@ run(void)
+ 			handler[ev.type](&ev); /* call handler */
+ }
+ 
++void
++runautostart(void)
++{
++	char *pathpfx;
++	char *path;
++	char *xdgdatahome;
++	char *home;
++	struct stat sb;
++
++	if ((home = getenv("HOME")) == NULL)
++		/* this is almost impossible */
++		return;
++
++	/* if $XDG_DATA_HOME is set and not empty, use $XDG_DATA_HOME/dwm,
++	 * otherwise use ~/.local/share/dwm as autostart script directory
++	 */
++	xdgdatahome = getenv("XDG_DATA_HOME");
++	if (xdgdatahome != NULL && *xdgdatahome != '\0') {
++		/* space for path segments, separators and nul */
++		pathpfx = ecalloc(1, strlen(xdgdatahome) + strlen(dwmdir) + 2);
++
++		if (sprintf(pathpfx, "%s/%s", xdgdatahome, dwmdir) <= 0) {
++			free(pathpfx);
++			return;
++		}
++	} else {
++		/* space for path segments, separators and nul */
++		pathpfx = ecalloc(1, strlen(home) + strlen(localshare)
++		                     + strlen(dwmdir) + 3);
++
++		if (sprintf(pathpfx, "%s/%s/%s", home, localshare, dwmdir) < 0) {
++			free(pathpfx);
++			return;
++		}
++	}
++
++	/* check if the autostart script directory exists */
++	if (! (stat(pathpfx, &sb) == 0 && S_ISDIR(sb.st_mode))) {
++		/* the XDG conformant path does not exist or is no directory
++		 * so we try ~/.dwm instead
++		 */
++		char *pathpfx_new = realloc(pathpfx, strlen(home) + strlen(dwmdir) + 3);
++		if(pathpfx_new == NULL) {
++			free(pathpfx);
++			return;
++		}
++		pathpfx = pathpfx_new;
++
++		if (sprintf(pathpfx, "%s/.%s", home, dwmdir) <= 0) {
++			free(pathpfx);
++			return;
++		}
++	}
++
++	/* try the blocking script first */
++	path = ecalloc(1, strlen(pathpfx) + strlen(autostartblocksh) + 2);
++	if (sprintf(path, "%s/%s", pathpfx, autostartblocksh) <= 0) {
++		free(path);
++		free(pathpfx);
++	}
++
++	if (access(path, X_OK) == 0)
++		system(path);
++
++	/* now the non-blocking script */
++	if (sprintf(path, "%s/%s", pathpfx, autostartsh) <= 0) {
++		free(path);
++		free(pathpfx);
++	}
++
++	if (access(path, X_OK) == 0)
++		system(strcat(path, " &"));
++
++	free(pathpfx);
++	free(path);
++}
++
+ void
+ scan(void)
+ {
+@@ -2142,6 +2223,7 @@ main(int argc, char *argv[])
+ 		die("pledge");
+ #endif /* __OpenBSD__ */
+ 	scan();
++	runautostart();
+ 	run();
+ 	cleanup();
+ 	XCloseDisplay(dpy);
+-- 
+2.27.0
+

patches/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;
+ 		}
+ }

patches/dwm-systray-20230922-9f88553.diff

@@ -0,0 +1,735 @@
+diff --git a/config.def.h b/config.def.h
+index 9efa774..fed4fb9 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" };
+diff --git a/dwm.c b/dwm.c
+index f1d86b2..f9e7e4a 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);
+@@ -206,6 +231,7 @@ 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);
+@@ -223,18 +249,23 @@ 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;
+@@ -257,9 +288,10 @@ 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;
+@@ -441,7 +473,7 @@ 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;
+@@ -484,6 +516,13 @@ 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++)
+@@ -515,9 +554,58 @@ 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]) {
+@@ -570,7 +658,7 @@ 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);
+@@ -655,6 +743,11 @@ destroynotify(XEvent *e)
+ 
+ 	if ((c = wintoclient(ev->window)))
+ 		unmanage(c, 1);
++	else if ((c = wintosystrayicon(ev->window))) {
++		removesystrayicon(c);
++		resizebarwin(selmon);
++		updatesystray();
++	}
+ }
+ 
+ void
+@@ -698,7 +791,7 @@ 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;
+@@ -707,13 +800,17 @@ 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)
+@@ -734,7 +831,7 @@ 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);
+@@ -745,7 +842,7 @@ 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
+@@ -782,8 +879,11 @@ 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
+@@ -869,14 +969,32 @@ 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)
+ {
+@@ -1017,7 +1135,8 @@ 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);
+@@ -1104,6 +1223,13 @@ 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))
+@@ -1225,6 +1351,17 @@ 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)
+@@ -1275,6 +1412,19 @@ 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)
+ {
+@@ -1282,6 +1432,14 @@ 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)
+ {
+@@ -1297,6 +1455,19 @@ 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)
+ {
+@@ -1443,26 +1614,37 @@ 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;
+ }
+@@ -1476,7 +1658,7 @@ 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
+@@ -1572,6 +1754,10 @@ 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);
+@@ -1579,6 +1765,9 @@ 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);
+@@ -1587,6 +1776,8 @@ 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();
+@@ -1717,7 +1908,18 @@ 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);
+ }
+ 
+@@ -1813,11 +2015,18 @@ 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,
+@@ -1828,10 +2037,15 @@ 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);
+ 	}
+@@ -2008,6 +2222,125 @@ 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
+@@ -2075,6 +2408,16 @@ 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)
+ {
+@@ -2128,6 +2471,22 @@ 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)
+ {

util.c

@@ -1,4 +1,5 @@
 /* See LICENSE file for copyright and license details. */
+#include <errno.h>
 #include <stdarg.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -6,6 +7,25 @@
 
 #include "util.h"
 
+void
+die(const char *fmt, ...)
+{
+	va_list ap;
+	int saved_errno;
+
+	saved_errno = errno;
+
+	va_start(ap, fmt);
+	vfprintf(stderr, fmt, ap);
+	va_end(ap);
+
+	if (fmt[0] && fmt[strlen(fmt)-1] == ':')
+		fprintf(stderr, " %s", strerror(saved_errno));
+	fputc('\n', stderr);
+
+	exit(1);
+}
+
 void *
 ecalloc(size_t nmemb, size_t size)
 {
@@ -15,21 +35,3 @@ ecalloc(size_t nmemb, size_t size)
 		die("calloc:");
 	return p;
 }
-
-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);
-}

util.h

@@ -3,6 +3,7 @@
 #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))
+#define LENGTH(X)               (sizeof (X) / sizeof (X)[0])
 
 void die(const char *fmt, ...);
 void *ecalloc(size_t nmemb, size_t size);