Update to dwm 6.4

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"),

config.def.h

@@ -68,7 +68,7 @@ static const char *runcmd[]   = { "dmenu_run", NULL };
 static const char *termcmd[]    = { "alacritty", NULL };
 static const char *browsercmd[] = { "firefox", NULL };
 
-static Key keys[] = {
+static const Key keys[] = {
     /* modifier           key          function             argument */
     { MODKEY,             XK_p,        spawn,               {.v = runcmd } },
     { MODKEY|ShiftMask,   XK_Return,   spawn,               {.v = termcmd } },
@@ -112,7 +112,7 @@ 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 */
     { ClkTagBar,            MODKEY,         Button1,        tag,            {0} },
     { ClkTagBar,            MODKEY,         Button3,        toggletag,      {0} },
@@ -125,4 +125,3 @@ static Button buttons[] = {
     { ClkTagBar,            MODKEY,         Button1,        tag,            {0} },
     { ClkTagBar,            MODKEY,         Button3,        toggletag,      {0} },
 };
-

drw.c

@@ -133,19 +133,6 @@ 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;
@@ -251,12 +238,10 @@ 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 i, ty, ellipsis_x = 0;
-	int ty;
+	unsigned int tmpw, ew, ellipsis_w = 0, ellipsis_len;
-	unsigned int ew;
 	XftDraw *d = NULL;
 	Fnt *usedfont, *curfont, *nextfont;
-	size_t i, len;
 	int utf8strlen, utf8charlen, render = x || y || w || h;
 	long utf8codepoint = 0;
 	const char *utf8str;
@@ -264,13 +249,17 @@ drw_text(Drw *drw, int x, int y, unsigned int w, unsigned int h, unsigned int lp
 	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. */
+	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) || !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);
@@ -282,8 +271,10 @@ 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, "...");
 	while (1) {
-		utf8strlen = 0;
+		ew = ellipsis_len = utf8strlen = 0;
 		utf8str = text;
 		nextfont = NULL;
 		while (*text) {
@@ -291,9 +282,27 @@ drw_text(Drw *drw, int x, int y, unsigned int w, unsigned int h, unsigned int lp
 			for (curfont = drw->fonts; curfont; curfont = curfont->next) {
 				charexists = charexists || XftCharExists(drw->dpy, curfont->xfont, utf8codepoint);
 				if (charexists) {
-					if (curfont == usedfont) {
+					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;
 					}
@@ -301,36 +310,25 @@ drw_text(Drw *drw, int x, int y, unsigned int w, unsigned int h, unsigned int lp
 				}
 			}
 
-			if (!charexists || nextfont)
+			if (overflow || !charexists || nextfont)
 				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);
+				                  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) {
+		if (!*text || overflow) {
 			break;
 		} else if (nextfont) {
 			charexists = 0;
@@ -340,6 +338,12 @@ drw_text(Drw *drw, int x, int y, unsigned int w, unsigned int h, unsigned int lp
 			 * 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);
 
@@ -351,7 +355,6 @@ 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);
@@ -368,6 +371,8 @@ 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.codepoint[++nomatches.idx % nomatches_len] = utf8codepoint;
+no_match:
 					usedfont = drw->fonts;
 				}
 			}
@@ -397,6 +402,15 @@ 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

@@ -35,6 +35,7 @@ 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 */

dwm.c

@@ -106,7 +106,7 @@ struct Client {
 	float cfact;
 	int x, y, w, h;
 	int oldx, oldy, oldw, oldh;
-	int basew, baseh, incw, inch, maxw, maxh, minw, minh;
+	int basew, baseh, incw, inch, maxw, maxh, minw, minh, hintsvalid;
 	int bw, oldbw;
 	unsigned int tags;
 	int isfixed, iscentered, isfloating, isalwaysontop, isurgent, neverfocus, oldstate, isfullscreen;
@@ -209,7 +209,7 @@ 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 *);
+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);
@@ -238,7 +238,7 @@ 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 *);
+static void tile(Monitor *m);
 static void togglebar(const Arg *arg);
 static void togglefloating(const Arg *arg);
 static void togglealwaysontop(const Arg *arg);
@@ -275,7 +275,7 @@ 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, blw = 0;      /* bar geometry */
+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;
@@ -381,6 +381,8 @@ applysizehints(Client *c, int *x, int *y, int *w, int *h, int interact)
 	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 */
@@ -474,7 +476,7 @@ buttonpress(XEvent *e)
 		if (i < LENGTH(tags)) {
 			click = ClkTagBar;
 			arg.ui = 1 << i;
-		} else if (ev->x < x + blw)
+		} else if (ev->x < x + TEXTW(selmon->ltsymbol))
 			click = ClkLtSymbol;
 		else if (ev->x > selmon->ww - (int)TEXTW(stext) - getsystraywidth())
 			click = ClkStatusText;
@@ -530,6 +532,7 @@ cleanup(void)
 		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);
@@ -829,7 +832,7 @@ drawbar(Monitor *m)
 				urg & 1 << i);
 		x += w;
 	}
-	w = blw = TEXTW(m->ltsymbol);
+	w = TEXTW(m->ltsymbol);
 	drw_setscheme(drw, scheme[SchemeTagsNorm]);
 	x = drw_text(drw, x, 0, w, bh, lrpad / 2, m->ltsymbol, 0);
 
@@ -1040,14 +1043,12 @@ gettextprop(Window w, Atom atom, char *text, unsigned int size)
 	text[0] = '\0';
 	if (!XGetTextProperty(dpy, w, &name, atom) || !name.nitems)
 		return 0;
-	if (name.encoding == XA_STRING)
+	if (name.encoding == XA_STRING) {
 		strncpy(text, (char *)name.value, size - 1);
-	else {
+	} else if (XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success && n > 0 && *list) {
-		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;
@@ -1170,14 +1171,12 @@ manage(Window w, XWindowAttributes *wa)
 		applyrules(c);
 	}
 
-	if (c->x + WIDTH(c) > c->mon->mx + c->mon->mw)
+	if (c->x + WIDTH(c) > c->mon->wx + c->mon->ww)
-		c->x = c->mon->mx + c->mon->mw - WIDTH(c);
+		c->x = c->mon->wx + c->mon->ww - WIDTH(c);
-	if (c->y + HEIGHT(c) > c->mon->my + c->mon->mh)
+	if (c->y + HEIGHT(c) > c->mon->wy + c->mon->wh)
-		c->y = c->mon->my + c->mon->mh - HEIGHT(c);
+		c->y = c->mon->wy + c->mon->wh - HEIGHT(c);
-	c->x = MAX(c->x, c->mon->mx);
+	c->x = MAX(c->x, c->mon->wx);
-	/* only fix client y-offset, if the client center might cover the bar */
+	c->y = MAX(c->y, c->mon->wy);
-	c->y = MAX(c->y, ((c->mon->by == c->mon->my) && (c->x + (c->w / 2) >= c->mon->wx)
-		&& (c->x + (c->w / 2) < c->mon->wx + c->mon->ww)) ? bh : c->mon->my);
 	c->bw = borderpx;
 
 	wc.border_width = c->bw;
@@ -1230,9 +1229,7 @@ maprequest(XEvent *e)
 		updatesystray();
 	}
 
-	if (!XGetWindowAttributes(dpy, ev->window, &wa))
+	if (!XGetWindowAttributes(dpy, ev->window, &wa) || wa.override_redirect)
-		return;
-	if (wa.override_redirect)
 		return;
 	if (!wintoclient(ev->window))
 		manage(ev->window, &wa);
@@ -1377,7 +1374,7 @@ propertynotify(XEvent *e)
 				arrange(c->mon);
 			break;
 		case XA_WM_NORMAL_HINTS:
-			updatesizehints(c);
+			c->hintsvalid = 0;
 			break;
 		case XA_WM_HINTS:
 			updatewmhints(c);
@@ -1827,7 +1824,6 @@ setup(void)
 	focus(NULL);
 }
 
-
 void
 seturgent(Client *c, int urg)
 {
@@ -1875,9 +1871,7 @@ spawn(const Arg *arg)
 			close(ConnectionNumber(dpy));
 		setsid();
 		execvp(((char **)arg->v)[0], (char **)arg->v);
-		fprintf(stderr, "dwm: execvp %s", ((char **)arg->v)[0]);
+		die("dwm: execvp '%s' failed:", ((char **)arg->v)[0]);
-		perror(" failed");
-		exit(EXIT_SUCCESS);
 	}
 }
 
@@ -2047,6 +2041,7 @@ unmanage(Client *c, int 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);
@@ -2156,8 +2151,9 @@ updategeom(void)
 				memcpy(&unique[j++], &info[i], sizeof(XineramaScreenInfo));
 		XFree(info);
 		nn = j;
-		if (n <= nn) { /* new monitors available */
+
-			for (i = 0; i < (nn - n); i++) {
+		/* 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();
@@ -2177,7 +2173,7 @@ updategeom(void)
 				m->mh = m->wh = unique[i].height;
 				updatebarpos(m);
 			}
-		} else { /* less monitors available nn < n */
+		/* removed monitors if n > nn */
 		for (i = nn; i < n; i++) {
 			for (m = mons; m && m->next; m = m->next);
 			while ((c = m->clients)) {
@@ -2192,7 +2188,6 @@ updategeom(void)
 				selmon = mons;
 			cleanupmon(m);
 		}
-		}
 		free(unique);
 	} else
 #endif /* XINERAMA */
@@ -2270,6 +2265,7 @@ updatesizehints(Client *c)
 	} 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
@@ -2548,11 +2544,9 @@ zoom(const Arg *arg)
 {
 	Client *c = selmon->sel;
 
-	if (!selmon->lt[selmon->sellt]->arrange
+	if (!selmon->lt[selmon->sellt]->arrange || !c || c->isfloating)
-	|| (selmon->sel && selmon->sel->isfloating))
 		return;
-	if (c == nexttiled(selmon->clients))
+	if (c == nexttiled(selmon->clients) && !(c = nexttiled(c->next)))
-		if (!c || !(c = nexttiled(c->next)))
 		return;
 	pop(c);
 }

util.c

@@ -6,18 +6,9 @@
 
 #include "util.h"
 
-void *
-ecalloc(size_t nmemb, size_t size)
-{
-	void *p;
-
-	if (!(p = calloc(nmemb, size)))
-		die("calloc:");
-	return p;
-}
-
 void
-die(const char *fmt, ...) {
+die(const char *fmt, ...)
+{
 	va_list ap;
 
 	va_start(ap, fmt);
@@ -33,3 +24,13 @@ die(const char *fmt, ...) {
 
 	exit(1);
 }
+
+void *
+ecalloc(size_t nmemb, size_t size)
+{
+	void *p;
+
+	if (!(p = calloc(nmemb, size)))
+		die("calloc:");
+	return p;
+}