X-Git-Url: https://git.xinqibao.xyz/dwm.git/blobdiff_plain/3fd39feb4153cf73f26223918bc8145ee98a9a92..4380db468aa81f73e3a31f434bc5bd4a2fe35bf0:/dwm.c?ds=inline

diff --git a/dwm.c b/dwm.c
index a4deccf..ae9e16e 100644
--- a/dwm.c
+++ b/dwm.c
@@ -17,9 +17,7 @@
  * set the override_redirect flag.  Clients are organized in a global
  * doubly-linked client list, the focus history is remembered through a global
  * stack list. Each client contains an array of Bools of the same size as the
- * global tags array to indicate the tags of a client.  For each client dwm
- * creates a small title window, which is resized whenever the (_NET_)WM_NAME
- * properties are updated or the client is moved/resized.
+ * global tags array to indicate the tags of a client.  
  *
  * Keys and tagging rules are organized as arrays and defined in config.h.
  *
@@ -46,8 +44,11 @@
 /* macros */
 #define BUTTONMASK		(ButtonPressMask | ButtonReleaseMask)
 #define CLEANMASK(mask)		(mask & ~(numlockmask | LockMask))
+#define LENGTH(x)		(sizeof x / sizeof x[0])
+#define MAXTAGLEN		16
 #define MOUSEMASK		(BUTTONMASK | PointerMotionMask)
 
+
 /* enums */
 enum { BarTop, BarBot, BarOff };			/* bar position */
 enum { CurNormal, CurResize, CurMove, CurLast };	/* cursor */
@@ -143,9 +144,9 @@ unsigned long getcolor(const char *colstr);
 long getstate(Window w);
 Bool gettextprop(Window w, Atom atom, char *text, unsigned int size);
 void grabbuttons(Client *c, Bool focused);
+void grabkeys(void);
 unsigned int idxoftag(const char *tag);
 void initfont(const char *fontstr);
-Bool isarrange(void (*func)());
 Bool isoccupied(unsigned int t);
 Bool isprotodel(Client *c);
 Bool isvisible(Client *c);
@@ -198,9 +199,6 @@ int screen, sx, sy, sw, sh, wax, way, waw, wah;
 int (*xerrorxlib)(Display *, XErrorEvent *);
 unsigned int bh, bpos;
 unsigned int blw = 0;
-unsigned int ltidx = 0; /* default */
-unsigned int nlayouts = 0;
-unsigned int nrules = 0;
 unsigned int numlockmask = 0;
 void (*handler[LASTEvent]) (XEvent *) = {
 	[ButtonPress] = buttonpress,
@@ -217,6 +215,8 @@ void (*handler[LASTEvent]) (XEvent *) = {
 	[UnmapNotify] = unmapnotify
 };
 Atom wmatom[WMLast], netatom[NetLast];
+Bool domwfact = True;
+Bool dozoom = True;
 Bool otherwm, readin;
 Bool running = True;
 Bool selscreen = True;
@@ -226,12 +226,15 @@ Client *stack = NULL;
 Cursor cursor[CurLast];
 Display *dpy;
 DC dc = {0};
+Layout *layout = NULL;
 Window barwin, root;
 Regs *regs = NULL;
 
 /* configuration, allows nested code to access above variables */
 #include "config.h"
 
+Bool prevtags[LENGTH(tags)];
+
 /* function implementations */
 void
 applyrules(Client *c) {
@@ -246,10 +249,10 @@ applyrules(Client *c) {
 	snprintf(buf, sizeof buf, "%s:%s:%s",
 			ch.res_class ? ch.res_class : "",
 			ch.res_name ? ch.res_name : "", c->name);
-	for(i = 0; i < nrules; i++)
+	for(i = 0; i < LENGTH(rules); i++)
 		if(regs[i].propregex && !regexec(regs[i].propregex, buf, 1, &tmp, 0)) {
 			c->isfloating = rules[i].isfloating;
-			for(j = 0; regs[i].tagregex && j < NTAGS; j++) {
+			for(j = 0; regs[i].tagregex && j < LENGTH(tags); j++) {
 				if(!regexec(regs[i].tagregex, tags[j], 1, &tmp, 0)) {
 					matched = True;
 					c->tags[j] = True;
@@ -273,7 +276,7 @@ arrange(void) {
 			unban(c);
 		else
 			ban(c);
-	layouts[ltidx].arrange();
+	layout->arrange();
 	focus(NULL);
 	restack();
 }
@@ -306,9 +309,9 @@ buttonpress(XEvent *e) {
 	Client *c;
 	XButtonPressedEvent *ev = &e->xbutton;
 
-	if(barwin == ev->window) {
+	if(ev->window == barwin) {
 		x = 0;
-		for(i = 0; i < NTAGS; i++) {
+		for(i = 0; i < LENGTH(tags); i++) {
 			x += textw(tags[i]);
 			if(ev->x < x) {
 				if(ev->button == Button1) {
@@ -334,20 +337,20 @@ buttonpress(XEvent *e) {
 		if(CLEANMASK(ev->state) != MODKEY)
 			return;
 		if(ev->button == Button1) {
-			if(isarrange(floating) || c->isfloating)
+			if((layout->arrange == floating) || c->isfloating)
 				restack();
 			else
 				togglefloating(NULL);
 			movemouse(c);
 		}
 		else if(ev->button == Button2) {
-			if((ISTILE) && !c->isfixed && c->isfloating)
+			if((floating != layout->arrange) && c->isfloating)
 				togglefloating(NULL);
 			else
 				zoom(NULL);
 		}
 		else if(ev->button == Button3 && !c->isfixed) {
-			if(isarrange(floating) || c->isfloating)
+			if((floating == layout->arrange) || c->isfloating)
 				restack();
 			else
 				togglefloating(NULL);
@@ -401,9 +404,8 @@ compileregs(void) {
 
 	if(regs)
 		return;
-	nrules = sizeof rules / sizeof rules[0];
-	regs = emallocz(nrules * sizeof(Regs));
-	for(i = 0; i < nrules; i++) {
+	regs = emallocz(LENGTH(rules) * sizeof(Regs));
+	for(i = 0; i < LENGTH(rules); i++) {
 		if(rules[i].prop) {
 			reg = emallocz(sizeof(regex_t));
 			if(regcomp(reg, rules[i].prop, REG_EXTENDED))
@@ -464,7 +466,7 @@ configurerequest(XEvent *e) {
 		c->ismax = False;
 		if(ev->value_mask & CWBorderWidth)
 			c->border = ev->border_width;
-		if(c->isfixed || c->isfloating || isarrange(floating)) {
+		if(c->isfixed || c->isfloating || (floating == layout->arrange)) {
 			if(ev->value_mask & CWX)
 				c->x = ev->x;
 			if(ev->value_mask & CWY)
@@ -532,7 +534,7 @@ drawbar(void) {
 	int i, x;
 
 	dc.x = dc.y = 0;
-	for(i = 0; i < NTAGS; i++) {
+	for(i = 0; i < LENGTH(tags); i++) {
 		dc.w = textw(tags[i]);
 		if(seltags[i]) {
 			drawtext(tags[i], dc.sel);
@@ -545,7 +547,7 @@ drawbar(void) {
 		dc.x += dc.w;
 	}
 	dc.w = blw;
-	drawtext(layouts[ltidx].symbol, dc.norm);
+	drawtext(layout->symbol, dc.norm);
 	x = dc.x + dc.w;
 	dc.w = textw(stext);
 	dc.x = sw - dc.w;
@@ -666,8 +668,8 @@ void
 expose(XEvent *e) {
 	XExposeEvent *ev = &e->xexpose;
 
-	if(0 == ev->count) {
-		if(barwin == ev->window)
+	if(ev->count == 0) {
+		if(ev->window == barwin)
 			drawbar();
 	}
 }
@@ -676,6 +678,7 @@ void
 floating(void) { /* default floating layout */
 	Client *c;
 
+	domwfact = dozoom = False;
 	for(c = clients; c; c = c->next)
 		if(isvisible(c))
 			resize(c, c->x, c->y, c->w, c->h, True);
@@ -780,7 +783,7 @@ gettextprop(Window w, Atom atom, char *text, unsigned int size) {
 	int n;
 	XTextProperty name;
 
-	if(!text || 0 == size)
+	if(!text || size == 0)
 		return False;
 	text[0] = '\0';
 	XGetTextProperty(dpy, w, &name, atom);
@@ -790,8 +793,7 @@ gettextprop(Window w, Atom atom, char *text, unsigned int size) {
 		strncpy(text, (char *)name.value, size - 1);
 	else {
 		if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
-		&& n > 0 && *list)
-		{
+		&& n > 0 && *list) {
 			strncpy(text, *list, size - 1);
 			XFreeStringList(list);
 		}
@@ -838,12 +840,31 @@ grabbuttons(Client *c, Bool focused) {
 				GrabModeAsync, GrabModeSync, None, None);
 }
 
+void
+grabkeys(void)  {
+	unsigned int i;
+	KeyCode code;
+
+	XUngrabKey(dpy, AnyKey, AnyModifier, root);
+	for(i = 0; i < LENGTH(keys); i++) {
+		code = XKeysymToKeycode(dpy, keys[i].keysym);
+		XGrabKey(dpy, code, keys[i].mod, root, True,
+				GrabModeAsync, GrabModeAsync);
+		XGrabKey(dpy, code, keys[i].mod | LockMask, root, True,
+				GrabModeAsync, GrabModeAsync);
+		XGrabKey(dpy, code, keys[i].mod | numlockmask, root, True,
+				GrabModeAsync, GrabModeAsync);
+		XGrabKey(dpy, code, keys[i].mod | numlockmask | LockMask, root, True,
+				GrabModeAsync, GrabModeAsync);
+	}
+}
+
 unsigned int
 idxoftag(const char *tag) {
 	unsigned int i;
 
-	for(i = 0; (i < NTAGS) && (tags[i] != tag); i++);
-	return (i < NTAGS) ? i : 0;
+	for(i = 0; (i < LENGTH(tags)) && (tags[i] != tag); i++);
+	return (i < LENGTH(tags)) ? i : 0;
 }
 
 void
@@ -888,12 +909,6 @@ initfont(const char *fontstr) {
 	dc.font.height = dc.font.ascent + dc.font.descent;
 }
 
-Bool
-isarrange(void (*func)())
-{
-	return func == layouts[ltidx].arrange;
-}
-
 Bool
 isoccupied(unsigned int t) {
 	Client *c;
@@ -923,7 +938,7 @@ Bool
 isvisible(Client *c) {
 	unsigned int i;
 
-	for(i = 0; i < NTAGS; i++)
+	for(i = 0; i < LENGTH(tags); i++)
 		if(c->tags[i] && seltags[i])
 			return True;
 	return False;
@@ -931,31 +946,13 @@ isvisible(Client *c) {
 
 void
 keypress(XEvent *e) {
-	KEYS
-	unsigned int len = sizeof keys / sizeof keys[0];
 	unsigned int i;
-	KeyCode code;
 	KeySym keysym;
 	XKeyEvent *ev;
 
-	if(!e) { /* grabkeys */
-		XUngrabKey(dpy, AnyKey, AnyModifier, root);
-		for(i = 0; i < len; i++) {
-			code = XKeysymToKeycode(dpy, keys[i].keysym);
-			XGrabKey(dpy, code, keys[i].mod, root, True,
-					GrabModeAsync, GrabModeAsync);
-			XGrabKey(dpy, code, keys[i].mod | LockMask, root, True,
-					GrabModeAsync, GrabModeAsync);
-			XGrabKey(dpy, code, keys[i].mod | numlockmask, root, True,
-					GrabModeAsync, GrabModeAsync);
-			XGrabKey(dpy, code, keys[i].mod | numlockmask | LockMask, root, True,
-					GrabModeAsync, GrabModeAsync);
-		}
-		return;
-	}
 	ev = &e->xkey;
 	keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
-	for(i = 0; i < len; i++)
+	for(i = 0; i < LENGTH(keys); i++)
 		if(keysym == keys[i].keysym
 		&& CLEANMASK(keys[i].mod) == CLEANMASK(ev->state))
 		{
@@ -1055,7 +1052,7 @@ mappingnotify(XEvent *e) {
 
 	XRefreshKeyboardMapping(ev);
 	if(ev->request == MappingKeyboard)
-		keypress(NULL);
+		grabkeys();
 }
 
 void
@@ -1133,7 +1130,7 @@ propertynotify(XEvent *e) {
 			default: break;
 			case XA_WM_TRANSIENT_FOR:
 				XGetTransientForHint(dpy, c->win, &trans);
-				if(!c->isfloating && (c->isfloating = (NULL != getclient(trans))))
+				if(!c->isfloating && (c->isfloating = (getclient(trans) != NULL)))
 					arrange();
 				break;
 			case XA_WM_NORMAL_HINTS:
@@ -1153,6 +1150,7 @@ quit(const char *arg) {
 	readin = running = False;
 }
 
+
 void
 resize(Client *c, int x, int y, int w, int h, Bool sizehints) {
 	XWindowChanges wc;
@@ -1266,9 +1264,9 @@ restack(void) {
 	drawbar();
 	if(!sel)
 		return;
-	if(sel->isfloating || isarrange(floating))
+	if(sel->isfloating || (layout->arrange == floating))
 		XRaiseWindow(dpy, sel->win);
-	if(!isarrange(floating)) {
+	if(layout->arrange != floating) {
 		wc.stack_mode = Below;
 		wc.sibling = barwin;
 		if(!sel->isfloating) {
@@ -1289,14 +1287,19 @@ restack(void) {
 void
 run(void) {
 	char *p;
-	int r, xfd;
+	char buf[sizeof stext];
 	fd_set rd;
+	int r, xfd;
+	unsigned int len, offset;
 	XEvent ev;
 
 	/* main event loop, also reads status text from stdin */
 	XSync(dpy, False);
 	xfd = ConnectionNumber(dpy);
 	readin = True;
+	offset = 0;
+	len = sizeof stext - 1;
+	buf[len] = stext[len] = '\0'; /* 0-terminator is never touched */
 	while(running) {
 		FD_ZERO(&rd);
 		if(readin)
@@ -1308,10 +1311,9 @@ run(void) {
 			eprint("select failed\n");
 		}
 		if(FD_ISSET(STDIN_FILENO, &rd)) {
-			switch(r = read(STDIN_FILENO, stext, sizeof stext - 1)) {
+			switch((r = read(STDIN_FILENO, buf + offset, len - offset))) {
 			case -1:
-				strncpy(stext, strerror(errno), sizeof stext - 1);
-				stext[sizeof stext - 1] = '\0';
+				strncpy(stext, strerror(errno), len);
 				readin = False;
 				break;
 			case 0:
@@ -1319,10 +1321,18 @@ run(void) {
 				readin = False;
 				break;
 			default:
-				for(stext[r] = '\0', p = stext + strlen(stext) - 1; p >= stext && *p == '\n'; *p-- = '\0');
-				for(; p >= stext && *p != '\n'; --p);
-				if(p > stext)
-					strncpy(stext, p + 1, sizeof stext);
+				for(p = buf + offset; r > 0; p++, r--, offset++)
+					if(*p == '\n' || *p == '\0') {
+						*p = '\0';
+						strncpy(stext, buf, len);
+						p += r - 1; /* p is buf + offset + r - 1 */
+						for(r = 0; *(p - r) && *(p - r) != '\n'; r++);
+						offset = r;
+						if(r)
+							memmove(buf, p - r + 1, r);
+						break;
+					}
+				break;
 			}
 			drawbar();
 		}
@@ -1374,16 +1384,16 @@ setlayout(const char *arg) {
 	unsigned int i;
 
 	if(!arg) {
-		if(++ltidx == nlayouts)
-			ltidx = 0;;
+		if(++layout == &layouts[LENGTH(layouts)])
+			layout = &layouts[0];
 	}
 	else {
-		for(i = 0; i < nlayouts; i++)
+		for(i = 0; i < LENGTH(layouts); i++)
 			if(!strcmp(arg, layouts[i].symbol))
 				break;
-		if(i == nlayouts)
+		if(i == LENGTH(layouts))
 			return;
-		ltidx = i;
+		layout = &layouts[i];
 	}
 	if(sel)
 		arrange();
@@ -1395,12 +1405,12 @@ void
 setmwfact(const char *arg) {
 	double delta;
 
-	if(!(ISTILE))
+	if(!domwfact)
 		return;
 	/* arg handling, manipulate mwfact */
-	if(NULL == arg)
+	if(arg == NULL)
 		mwfact = MWFACT;
-	else if(1 == sscanf(arg, "%lf", &delta)) {
+	else if(sscanf(arg, "%lf", &delta) == 1) {
 		if(arg[0] == '+' || arg[0] == '-')
 			mwfact += delta;
 		else
@@ -1459,9 +1469,10 @@ setup(void) {
 	XSelectInput(dpy, root, wa.event_mask);
 
 	/* grab keys */
-	keypress(NULL);
+	grabkeys();
 
 	/* init tags */
+	memcpy(prevtags, seltags, sizeof seltags);
 	compileregs();
 
 	/* init appearance */
@@ -1476,8 +1487,8 @@ setup(void) {
 
 	/* init layouts */
 	mwfact = MWFACT;
-	nlayouts = sizeof layouts / sizeof layouts[0];
-	for(blw = i = 0; i < nlayouts; i++) {
+	layout = &layouts[0];
+	for(blw = i = 0; i < LENGTH(layouts); i++) {
 		j = textw(layouts[i].symbol);
 		if(j > blw)
 			blw = j;
@@ -1503,6 +1514,7 @@ setup(void) {
 
 	/* multihead support */
 	selscreen = XQueryPointer(dpy, root, &w, &w, &d, &d, &d, &d, &mask);
+
 }
 
 void
@@ -1515,8 +1527,8 @@ spawn(const char *arg) {
 		return;
 	/* The double-fork construct avoids zombie processes and keeps the code
 	 * clean from stupid signal handlers. */
-	if(0 == fork()) {
-		if(0 == fork()) {
+	if(fork() == 0) {
+		if(fork() == 0) {
 			if(dpy)
 				close(ConnectionNumber(dpy));
 			setsid();
@@ -1535,7 +1547,7 @@ tag(const char *arg) {
 
 	if(!sel)
 		return;
-	for(i = 0; i < NTAGS; i++)
+	for(i = 0; i < LENGTH(tags); i++)
 		sel->tags[i] = (NULL == arg);
 	sel->tags[idxoftag(arg)] = True;
 	arrange();
@@ -1562,6 +1574,7 @@ tile(void) {
 	unsigned int i, n, nx, ny, nw, nh, mw, th;
 	Client *c, *mc;
 
+	domwfact = dozoom = True;
 	for(n = 0, c = nexttiled(clients); c; c = nexttiled(c->next))
 		n++;
 
@@ -1576,7 +1589,7 @@ tile(void) {
 	nw = 0; /* gcc stupidity requires this */
 	for(i = 0, c = mc = nexttiled(clients); c; c = nexttiled(c->next), i++) {
 		c->ismax = False;
-		if(0 == i) { /* master */
+		if(i == 0) { /* master */
 			nw = mw - 2 * c->border;
 			nh = wah - 2 * c->border;
 		}
@@ -1591,8 +1604,8 @@ tile(void) {
 			else
 				nh = th - 2 * c->border;
 		}
-		resize(c, nx, ny, nw, nh, True);
-		if((c->h < bh) || (c->h > nh) || (c->w < bh) || (c->w > nw))
+		resize(c, nx, ny, nw, nh, RESIZEHINTS);
+		if((RESIZEHINTS) && ((c->h < bh) || (c->h > nh) || (c->w < bh) || (c->w > nw)))
 			/* client doesn't accept size constraints */
 			resize(c, nx, ny, nw, nh, False);
 		if(n > 1 && th != wah)
@@ -1627,7 +1640,7 @@ togglemax(const char *arg) {
 	if(!sel || sel->isfixed)
 		return;
 	if((sel->ismax = !sel->ismax)) {
-		if(isarrange(floating) || sel->isfloating)
+		if((layout->arrange == floating) || sel->isfloating)
 			sel->wasfloating = True;
 		else {
 			togglefloating(NULL);
@@ -1656,8 +1669,8 @@ toggletag(const char *arg) {
 		return;
 	i = idxoftag(arg);
 	sel->tags[i] = !sel->tags[i];
-	for(j = 0; j < NTAGS && !sel->tags[j]; j++);
-	if(j == NTAGS)
+	for(j = 0; j < LENGTH(tags) && !sel->tags[j]; j++);
+	if(j == LENGTH(tags))
 		sel->tags[i] = True; /* at least one tag must be enabled */
 	arrange();
 }
@@ -1668,8 +1681,8 @@ toggleview(const char *arg) {
 
 	i = idxoftag(arg);
 	seltags[i] = !seltags[i];
-	for(j = 0; j < NTAGS && !seltags[j]; j++);
-	if(j == NTAGS)
+	for(j = 0; j < LENGTH(tags) && !seltags[j]; j++);
+	if(j == LENGTH(tags))
 		seltags[i] = True; /* at least one tag must be viewed */
 	arrange();
 }
@@ -1835,7 +1848,7 @@ view(const char *arg) {
 	unsigned int i;
 
 	memcpy(prevtags, seltags, sizeof seltags);
-	for(i = 0; i < NTAGS; i++)
+	for(i = 0; i < LENGTH(tags); i++)
 		seltags[i] = (NULL == arg);
 	seltags[idxoftag(arg)] = True;
 	arrange();
@@ -1843,11 +1856,11 @@ view(const char *arg) {
 
 void
 viewprevtag(const char *arg) {
-	static Bool tmptags[sizeof tags / sizeof tags[0]];
+	static Bool tmp[LENGTH(tags)];
 
-	memcpy(tmptags, seltags, sizeof seltags);
+	memcpy(tmp, seltags, sizeof seltags);
 	memcpy(seltags, prevtags, sizeof seltags);
-	memcpy(prevtags, tmptags, sizeof seltags);
+	memcpy(prevtags, tmp, sizeof seltags);
 	arrange();
 }
 
@@ -1855,7 +1868,7 @@ void
 zoom(const char *arg) {
 	Client *c;
 
-	if(!sel || !(ISTILE) || sel->isfloating)
+	if(!sel || !dozoom || sel->isfloating)
 		return;
 	if((c = sel) == nexttiled(clients))
 		if(!(c = nexttiled(c->next)))
@@ -1869,7 +1882,8 @@ zoom(const char *arg) {
 int
 main(int argc, char *argv[]) {
 	if(argc == 2 && !strcmp("-v", argv[1]))
-		eprint("dwm-"VERSION", © 2006-2007 A. R. Garbe, S. van Dijk, J. Salmi, P. Hruby, S. Nagy\n");
+		eprint("dwm-"VERSION", © 2006-2007 Anselm R. Garbe, Sander van Dijk, "
+		       "Jukka Salmi, Premysl Hruby, Szabolcs Nagy\n");
 	else if(argc != 1)
 		eprint("usage: dwm [-v]\n");