increased version

- optimised drawbar() and arrange() handling for multiple monitors, arrange only arranges the relevant monitors when applicable, same with drawbar
- need to release 5.7.1

.hgtags

@@ -61,3 +61,10 @@ e4bcaca8e6ef13d2c3b81f1218ad15e5da4d68bd 5.2
 8b7836a471f8f9ee61bec980df00971888d76343 5.4
 85a78d8afa0fe8b106a8223b5327e5bddb5dd5e3 5.4.1
 deaa276abac17ca08fbeb936916e4c8292d293a4 5.5
+5550702215773aad462f22a774dced9b87437c51 5.6
+e47a47bd3ed42fd3cf023572147b75ebc2adef82 5.6.1
+257403d4cd962cac03344a871ea56cc742bae38e 5.7
+48c3f87c335d6606e55fbae97267fa6b39ca56e0 5.7.1
+15761ac5e2f1e9010900f891616a24a22d82f128 5.7.2
+60ea8fed13ab750c6717f2764cbf9c13bb6f0d0a 5.8
+1ed1e75c9c2e395a2c475b52657a430bd95070c7 5.8.1

BUGS

@@ -0,0 +1,97 @@
+---
+
+18:17 < Biolunar> when i change my resolution in dwm (to a smaller one) and then back to the native, the top bar is not repainted. that's since 5.7.2, in 5.6 it worked fine
+18:19 < Biolunar> is it just happening to me or a (known) bug?
+18:24 < Biolunar> and in addition, mplayers fullscreen is limited to the small resolution after i changed it back to the native
+
+reproducible with xrandr -s but not with --output and --mode, strange
+
+---
+
+> enternotify is handled even when the entered window is already focused
+> (eg moving the mouse to the bar and back, scrolling on the border..)
+>
+> focusing might be expensive for some clients (eg dim/light up)
+>
+> a possible solution is to modify enternotify:
+>
+> +       c = wintoclient(ev->window);
+>        if((m = wintomon(ev->window)) && m != selmon) {
+>                unfocus(selmon->sel);
+>                selmon = m;
+>        }
+> +       else if (c == selmon->sel || c == NULL)
+> +               return;
+
+---
+
+> another corner case:
+
+a tiled client can be resized with mod+right click, but it only works
+on the main monitor
+
+---
+
+dmenu appears on the monitor where the pointer is and not on selmon
+
+---
+
+yet another corner case:
+open a terminal, focus another monitor, but without moving the mouse
+pointer there
+if there is no client on the other monitor to get the focus, then the
+terminal will be unfocused but it will accept input
+
+---
+
+Donald Allen reported this:
+
+starting emacs from dmenu in archlinux results in missing configure of emacs, but mod1-space or mod1-shift-space fix this problem. this problem is new and did not happen in 1.6 xorg servers
+
+Starting emacs from xterm doesnt show this problem, he uses tag 8 for emacs
+
+---
+
+2009/12/7 Alexandr Krylovskiy <wing_AT_tversu.ru>: 
+>  Fullscreen mode with flash applications (youtube, for example) doesn't 
+> work properly neither in tiled nor in floating mode. 
+>  Fullscreen window closes immediately after opening. 
+
+This is a known bug (for some curiosity I received the same report via 
+privmail from 2 other people within one week, really strange). 
+The quick fix is commenting out the code in lines 817/818 in hg tip 
+dwm. I cannot confirm this has no side effects (I think it does) and I 
+will address this issue shortly with a real fix. 
+
+---
+
+SDL seems to not like non-reparenting WMs:
+
+> I would like to mention SDL problems, however SDL is not crucial to
+> me anymore; people that really care about it should speak up and
+> propose dwm / SDL patch or cooperation scheme in that matter. 
+
+Patching SDL, bugging them?
+
+---
+
+voltaic reports this:
+
+When I use two monitors, one larger in resolution than the other, the
+bar is drawn using the smaller x-dimension on both screens. I think
+what's happening is that there are two bars drawn, but the short bar
+is always on top of the long bar such that I can't see the information
+under the short bar. If I switch to the small screen, hide the short
+bar, and then switch to the large screen, the long bar is drawn
+correctly.
+
+A similar problem occurs when I have started dwm on a small resolution
+monitor (laptop screen) and then I switch to a large external display.
+When I do this, the bar itself is drawn for the original smaller
+resolution, but the information to be printed on the bar is
+right-aligned for a longer bar. So what I see is a bar that has the
+right hand side of it cut-off. See attached screenshot.
+
+I am using standard options for xrandr such as --output VGA1 --auto, etc.
+
+---

LICENSE

@@ -1,8 +1,8 @@
 MIT/X Consortium License
 
-© 2006-2009 Anselm R Garbe <garbeam at gmail dot com>
+© 2006-2010 Anselm R Garbe <anselm@garbe.us>
 © 2006-2007 Sander van Dijk <a dot h dot vandijk at gmail dot com>
-© 2006-2007 Jukka Salmi <jukka at salmi dot ch>
+© 2006-2009 Jukka Salmi <jukka at salmi dot ch>
 © 2007-2009 Premysl Hruby <dfenze at gmail dot com>
 © 2007-2009 Szabolcs Nagy <nszabolcs at gmail dot com>
 © 2007-2009 Christof Musik <christof at sendfax dot de>

config.def.h

@@ -1,7 +1,7 @@
 /* See LICENSE file for copyright and license details. */
 
 /* appearance */
-static const char font[]            = "-*-*-medium-*-*-*-14-*-*-*-*-*-*-*";
+static const char font[]            = "-*-terminus-medium-r-*-*-16-*-*-*-*-*-*-*";
 static const char normbordercolor[] = "#cccccc";
 static const char normbgcolor[]     = "#cccccc";
 static const char normfgcolor[]     = "#000000";
@@ -24,7 +24,7 @@ static const Rule rules[] = {
 
 /* layout(s) */
 static const float mfact      = 0.55; /* factor of master area size [0.05..0.95] */
-static const Bool resizehints = True; /* False means respect size hints in tiled resizals */
+static const Bool resizehints = True; /* True means respect size hints in tiled resizals */
 
 static const Layout layouts[] = {
 	/* symbol     arrange function */
@@ -84,8 +84,7 @@ static Key keys[] = {
 };
 
 /* button definitions */
-/* click can be a tag number (starting at 0),
- * ClkLtSymbol, ClkStatusText, ClkWinTitle, ClkClientWin, or ClkRootWin */
+/* click can be ClkLtSymbol, ClkStatusText, ClkWinTitle, ClkClientWin, or ClkRootWin */
 static Button buttons[] = {
 	/* click                event mask      button          function        argument */
 	{ ClkLtSymbol,          0,              Button1,        setlayout,      {0} },

config.mk

@@ -1,5 +1,5 @@
 # dwm version
-VERSION = 5.6
+VERSION = 5.8.2
 
 # Customize below to fit your system
 
@@ -10,7 +10,7 @@ MANPREFIX = ${PREFIX}/share/man
 X11INC = /usr/X11R6/include
 X11LIB = /usr/X11R6/lib
 
-# Xinerama, un-comment if you want it
+# Xinerama
 XINERAMALIBS = -L${X11LIB} -lXinerama
 XINERAMAFLAGS = -DXINERAMA
 
@@ -20,10 +20,10 @@ LIBS = -L/usr/lib -lc -L${X11LIB} -lX11 ${XINERAMALIBS}
 
 # flags
 CPPFLAGS = -DVERSION=\"${VERSION}\" ${XINERAMAFLAGS}
-#CFLAGS = -g -std=c99 -pedantic -Wall -O0 ${INCS} ${CPPFLAGS}
-CFLAGS = -std=c99 -pedantic -Wall -Os ${INCS} ${CPPFLAGS}
-#LDFLAGS = -g ${LIBS}
-LDFLAGS = -s ${LIBS}
+CFLAGS = -g -std=c99 -pedantic -Wall -O0 ${INCS} ${CPPFLAGS}
+#CFLAGS = -std=c99 -pedantic -Wall -Os ${INCS} ${CPPFLAGS}
+LDFLAGS = -g ${LIBS}
+#LDFLAGS = -s ${LIBS}
 
 # Solaris
 #CFLAGS = -fast ${INCS} -DVERSION=\"${VERSION}\"

dwm.1

@@ -20,14 +20,13 @@ 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 number of visible windows, 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.
+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
@@ -37,8 +36,10 @@ prints version information to standard output, then exits.
 .SH USAGE
 .SS Status bar
 .TP
-.B Standard input
-is read and displayed in the status text area.
+.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
@@ -56,7 +57,7 @@ click on a tag label adds/removes that tag to/from the focused window.
 .TP
 .B Mod1\-Shift\-Return
 Start
-.BR xterm.
+.BR uxterm (1).
 .TP
 .B Mod1\-,
 Focus previous screen, if any.
@@ -67,7 +68,7 @@ Focus next screen, if any.
 .B Mod1\-Shift\-,
 Send focused window to previous screen, if any.
 .TP
-.B Mod1\-Shift\-,
+.B Mod1\-Shift\-.
 Send focused window to next screen, if any.
 .TP
 .B Mod1\-b
@@ -110,30 +111,22 @@ Toggle focused window between tiled and floating state.
 Toggles to the previously selected tags.
 .TP
 .B Mod1\-Shift\-[1..n]
-Apply
-.RB nth
-tag to focused window.
+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
-.B nth
-tag to/from focused window.
+Add/remove nth tag to/from focused window.
 .TP
 .B Mod1\-[1..n]
-View all windows with
-.BR nth
-tag.
+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
-.BR nth
-tag to/from the view.
+Add/remove all windows with nth tag to/from the view.
 .TP
 .B Mod1\-Shift\-q
 Quit dwm.
@@ -155,11 +148,17 @@ code. This keeps it fast, secure and simple.
 .SH BUGS
 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. As a workaround
-you can use JDK 1.4 (which doesn't contain the XToolkit/XAWT backend) or you
-can set the following environment variable (to use the older Motif
-backend instead):
-.BR AWT_TOOLKIT=MToolkit .
+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 .
 .P
 GTK 2.10.9+ versions contain a broken
 .BR Save\-As

dwm.c

@@ -57,7 +57,8 @@
 /* enums */
 enum { CurNormal, CurResize, CurMove, CurLast };        /* cursor */
 enum { ColBorder, ColFG, ColBG, ColLast };              /* color */
-enum { NetSupported, NetWMName, NetLast };              /* EWMH atoms */
+enum { NetSupported, NetWMName, NetWMState,
+       NetWMFullscreen, NetLast };                      /* EWMH atoms */
 enum { WMProtocols, WMDelete, WMState, WMLast };        /* default atoms */
 enum { ClkTagBar, ClkLtSymbol, ClkStatusText, ClkWinTitle,
        ClkClientWin, ClkRootWin, ClkLast };             /* clicks */
@@ -83,10 +84,11 @@ 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;
 	int bw, oldbw;
 	unsigned int tags;
-	Bool isfixed, isfloating, isurgent;
+	Bool isfixed, isfloating, isurgent, oldstate;
 	Client *next;
 	Client *snext;
 	Monitor *mon;
@@ -121,6 +123,7 @@ typedef struct {
 } Layout;
 
 struct Monitor {
+	char ltsymbol[16];
 	float mfact;
 	int num;
 	int by;               /* bar geometry */
@@ -151,17 +154,20 @@ typedef struct {
 /* function declarations */
 static void applyrules(Client *c);
 static Bool applysizehints(Client *c, int *x, int *y, int *w, int *h, Bool interact);
-static void arrange(void);
+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 cleanupmons(void);
+static void cleanupmon(Monitor *mon);
 static void clearurgent(Client *c);
+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);
@@ -197,6 +203,7 @@ static Monitor *ptrtomon(int x, int y);
 static void propertynotify(XEvent *e);
 static void quit(const Arg *arg);
 static void resize(Client *c, int x, int y, int w, int h, Bool interact);
+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);
@@ -207,7 +214,7 @@ static void setlayout(const Arg *arg);
 static void setmfact(const Arg *arg);
 static void setup(void);
 static void showhide(Client *c);
-static void sigchld(int signal);
+static void sigchld(int unused);
 static void spawn(const Arg *arg);
 static void tag(const Arg *arg);
 static void tagmon(const Arg *arg);
@@ -217,10 +224,10 @@ 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);
-static void unmanage(Client *c);
+static void unfocus(Client *c, Bool setfocus);
+static void unmanage(Client *c, Bool destroyed);
 static void unmapnotify(XEvent *e);
-static void updategeom(void);
+static Bool updategeom(void);
 static void updatebarpos(Monitor *m);
 static void updatebars(void);
 static void updatenumlockmask(void);
@@ -238,7 +245,7 @@ static void zoom(const Arg *arg);
 
 /* variables */
 static const char broken[] = "broken";
-static char stext[256], ntext[8];
+static char stext[256];
 static int screen;
 static int sw, sh;           /* X display screen geometry width, height */
 static int bh, blw = 0;      /* bar geometry */
@@ -246,6 +253,7 @@ 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,
@@ -350,9 +358,9 @@ applysizehints(Client *c, int *x, int *y, int *w, int *h, Bool interact) {
 		/* adjust for aspect limits */
 		if(c->mina > 0 && c->maxa > 0) {
 			if(c->maxa < (float)*w / *h)
-				*w = *h * c->maxa;
+				*w = *h * c->maxa + 0.5;
 			else if(c->mina < (float)*h / *w)
-				*h = *w * c->mina;
+				*h = *w * c->mina + 0.5;
 		}
 		if(baseismin) { /* increment calculation requires this */
 			*w -= c->basew;
@@ -377,17 +385,24 @@ applysizehints(Client *c, int *x, int *y, int *w, int *h, Bool interact) {
 }
 
 void
-arrange(void) {
-	Monitor *m;
-
-	for(m = mons; m; m = m->next)
+arrange(Monitor *m) {
+	if(m)
+		showhide(m->stack);
+	else for(m = mons; m; m = m->next)
 		showhide(m->stack);
 	focus(NULL);
-	for(m = mons; m; m = m->next) {
-		if(m->lt[m->sellt]->arrange)
-			m->lt[m->sellt]->arrange(m);
-		restack(m);
-	}
+	if(m)
+		arrangemon(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);
+	restack(m);
 }
 
 void
@@ -413,7 +428,7 @@ buttonpress(XEvent *e) {
 	click = ClkRootWin;
 	/* focus monitor if necessary */
 	if((m = wintomon(ev->window)) && m != selmon) {
-		unfocus(selmon->sel);
+		unfocus(selmon->sel, True);
 		selmon = m;
 		focus(NULL);
 	}
@@ -466,7 +481,7 @@ cleanup(void) {
 	selmon->lt[selmon->sellt] = &foo;
 	for(m = mons; m; m = m->next)
 		while(m->stack)
-			unmanage(m->stack);
+			unmanage(m->stack, False);
 	if(dc.font.set)
 		XFreeFontSet(dpy, dc.font.set);
 	else
@@ -477,22 +492,25 @@ cleanup(void) {
 	XFreeCursor(dpy, cursor[CurNormal]);
 	XFreeCursor(dpy, cursor[CurResize]);
 	XFreeCursor(dpy, cursor[CurMove]);
-	cleanupmons();
+	while(mons)
+		cleanupmon(mons);
 	XSync(dpy, False);
 	XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
 }
 
 void
-cleanupmons(void) {
+cleanupmon(Monitor *mon) {
 	Monitor *m;
 
-	while(mons) {
-		m = mons->next;
-		XUnmapWindow(dpy, mons->barwin);
-		XDestroyWindow(dpy, mons->barwin);
-		free(mons);
-		mons = 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
@@ -530,17 +548,18 @@ configurenotify(XEvent *e) {
 	Monitor *m;
 	XConfigureEvent *ev = &e->xconfigure;
 
-	if(ev->window == root && (ev->width != sw || ev->height != sh)) {
+	if(ev->window == root) {
 		sw = ev->width;
 		sh = ev->height;
-		updategeom();
-		if(dc.drawable != 0)
-			XFreePixmap(dpy, dc.drawable);
-		dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
-		updatebars();
-		for(m = mons; m; m = m->next)
-			XMoveResizeWindow(dpy, m->barwin, m->wx, m->by, m->ww, bh);
-		arrange();
+		if(updategeom()) {
+			if(dc.drawable != 0)
+				XFreePixmap(dpy, dc.drawable);
+			dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
+			updatebars();
+			for(m = mons; m; m = m->next)
+				XMoveResizeWindow(dpy, m->barwin, m->wx, m->by, m->ww, bh);
+			arrange(NULL);
+		}
 	}
 }
 
@@ -564,9 +583,9 @@ configurerequest(XEvent *e) {
 				c->w = ev->width;
 			if(ev->value_mask & CWHeight)
 				c->h = ev->height;
-			if((c->x - m->mx + c->w) > m->mw && c->isfloating)
+			if((c->x + c->w) > m->mx + m->mw && c->isfloating)
 				c->x = m->mx + (m->mw / 2 - c->w / 2); /* center in x direction */
-			if((c->y - m->my + c->h) > m->mh && c->isfloating)
+			if((c->y + c->h) > m->my + m->mh && c->isfloating)
 				c->y = m->my + (m->mh / 2 - c->h / 2); /* center in y direction */
 			if((ev->value_mask & (CWX|CWY)) && !(ev->value_mask & (CWWidth|CWHeight)))
 				configure(c);
@@ -589,13 +608,29 @@ configurerequest(XEvent *e) {
 	XSync(dpy, False);
 }
 
+Monitor *
+createmon(void) {
+	Monitor *m;
+
+	if(!(m = (Monitor *)calloc(1, sizeof(Monitor))))
+		die("fatal: could not malloc() %u bytes\n", sizeof(Monitor));
+	m->tagset[0] = m->tagset[1] = 1;
+	m->mfact = mfact;
+	m->showbar = showbar;
+	m->topbar = topbar;
+	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);
+		unmanage(c, True);
 }
 
 void
@@ -649,13 +684,11 @@ dirtomon(int dir) {
 void
 drawbar(Monitor *m) {
 	int x;
-	unsigned int i, n = 0, occ = 0, urg = 0;
+	unsigned int i, occ = 0, urg = 0;
 	unsigned long *col;
 	Client *c;
 
 	for(c = m->clients; c; c = c->next) {
-		if(ISVISIBLE(c))
-			n++;
 		occ |= c->tags;
 		if(c->isurgent)
 			urg |= c->tags;
@@ -669,15 +702,10 @@ drawbar(Monitor *m) {
 		           occ & 1 << i, urg & 1 << i, col);
 		dc.x += dc.w;
 	}
-	if(blw > 0) {
-		dc.w = blw;
-		drawtext(m->lt[m->sellt]->symbol, dc.norm, False);
-		dc.x += dc.w;
-	}
-	snprintf(ntext, sizeof ntext, "%u", n);
-	dc.w = TEXTW(ntext);
-	drawtext(ntext, dc.norm, False);
-	x = (dc.x += dc.w);
+	dc.w = blw = TEXTW(m->ltsymbol);
+	drawtext(m->ltsymbol, dc.norm, False);
+	dc.x += dc.w;
+	x = dc.x;
 	if(m == selmon) { /* status is only drawn on selected monitor */
 		dc.w = TEXTW(stext);
 		dc.x = m->ww - dc.w;
@@ -769,7 +797,7 @@ enternotify(XEvent *e) {
 	if((ev->mode != NotifyNormal || ev->detail == NotifyInferior) && ev->window != root)
 		return;
 	if((m = wintomon(ev->window)) && m != selmon) {
-		unfocus(selmon->sel);
+		unfocus(selmon->sel, True);
 		selmon = m;
 	}
 	if((c = wintoclient(ev->window)))
@@ -791,8 +819,9 @@ void
 focus(Client *c) {
 	if(!c || !ISVISIBLE(c))
 		for(c = selmon->stack; c && !ISVISIBLE(c); c = c->snext);
-	if(selmon->sel)
-		unfocus(selmon->sel);
+	/* was if(selmon->sel) */
+	if(selmon->sel && selmon->sel != c)
+		unfocus(selmon->sel, False);
 	if(c) {
 		if(c->mon != selmon)
 			selmon = c->mon;
@@ -824,8 +853,9 @@ focusmon(const Arg *arg) {
 
 	if(!mons->next)
 		return;
-	m = dirtomon(arg->i);
-	unfocus(selmon->sel);
+	if((m = dirtomon(arg->i)) == selmon)
+		return;
+	unfocus(selmon->sel, True);
 	selmon = m;
 	focus(NULL);
 }
@@ -877,15 +907,14 @@ getrootptr(int *x, int *y) {
 
 long
 getstate(Window w) {
-	int format, status;
+	int format;
 	long result = -1;
 	unsigned char *p = NULL;
 	unsigned long n, extra;
 	Atom real;
 
-	status = XGetWindowProperty(dpy, w, wmatom[WMState], 0L, 2L, False, wmatom[WMState],
-	                            &real, &format, &n, &extra, (unsigned char **)&p);
-	if(status != Success)
+	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;
@@ -1009,6 +1038,19 @@ isprotodel(Client *c) {
 	return ret;
 }
 
+#ifdef XINERAMA
+static Bool
+isuniquegeom(XineramaScreenInfo *unique, size_t len, XineramaScreenInfo *info) {
+	unsigned int i;
+
+	for(i = 0; i < len; i++)
+		if(unique[i].x_org == info->x_org && unique[i].y_org == info->y_org
+		&& unique[i].width == info->width && unique[i].height == info->height)
+			return False;
+	return True;
+}
+#endif /* XINERAMA */
+
 void
 keypress(XEvent *e) {
 	unsigned int i;
@@ -1039,8 +1081,15 @@ killclient(const Arg *arg) {
 		ev.xclient.data.l[1] = CurrentTime;
 		XSendEvent(dpy, selmon->sel->win, False, NoEventMask, &ev);
 	}
-	else
+	else {
+		XGrabServer(dpy);
+		XSetErrorHandler(xerrordummy);
+		XSetCloseDownMode(dpy, DestroyAll);
 		XKillClient(dpy, selmon->sel->win);
+		XSync(dpy, False);
+		XSetErrorHandler(xerror);
+		XUngrabServer(dpy);
+	}
 }
 
 void
@@ -1066,12 +1115,13 @@ manage(Window w, XWindowAttributes *wa) {
 		applyrules(c);
 	}
 	/* geometry */
-	c->x = wa->x + c->mon->wx;
-	c->y = wa->y + c->mon->wy;
-	c->w = wa->width;
-	c->h = wa->height;
+	c->x = c->oldx = wa->x + c->mon->wx;
+	c->y = c->oldy = wa->y + c->mon->wy;
+	c->w = c->oldw = wa->width;
+	c->h = c->oldh = wa->height;
 	c->oldbw = wa->border_width;
 	if(c->w == c->mon->mw && c->h == c->mon->mh) {
+		c->isfloating = 1;
 		c->x = c->mon->mx;
 		c->y = c->mon->my;
 		c->bw = 0;
@@ -1095,7 +1145,7 @@ manage(Window w, XWindowAttributes *wa) {
 	XSelectInput(dpy, w, EnterWindowMask|FocusChangeMask|PropertyChangeMask|StructureNotifyMask);
 	grabbuttons(c, False);
 	if(!c->isfloating)
-		c->isfloating = trans != None || c->isfixed;
+		c->isfloating = c->oldstate = trans != None || c->isfixed;
 	if(c->isfloating)
 		XRaiseWindow(dpy, c->win);
 	attach(c);
@@ -1103,7 +1153,7 @@ manage(Window w, XWindowAttributes *wa) {
 	XMoveResizeWindow(dpy, c->win, c->x + 2 * sw, c->y, c->w, c->h); /* some windows require this */
 	XMapWindow(dpy, c->win);
 	setclientstate(c, NormalState);
-	arrange();
+	arrange(c->mon);
 }
 
 void
@@ -1130,8 +1180,14 @@ maprequest(XEvent *e) {
 
 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, False);
 }
@@ -1223,7 +1279,7 @@ propertynotify(XEvent *e) {
 		case XA_WM_TRANSIENT_FOR:
 			XGetTransientForHint(dpy, c->win, &trans);
 			if(!c->isfloating && (c->isfloating = (wintoclient(trans) != NULL)))
-				arrange();
+				arrange(c->mon);
 			break;
 		case XA_WM_NORMAL_HINTS:
 			updatesizehints(c);
@@ -1235,8 +1291,41 @@ propertynotify(XEvent *e) {
 		}
 		if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
 			updatetitle(c);
-			if(c == selmon->sel)
-				drawbars();
+			if(c == c->mon->sel)
+				drawbar(c->mon);
+		}
+	}
+}
+
+void
+clientmessage(XEvent *e) {
+	XClientMessageEvent *cme = &e->xclient;
+	Client *c;
+
+	if((c = wintoclient(cme->window))
+	&& (cme->message_type == netatom[NetWMState] && cme->data.l[1] == netatom[NetWMFullscreen]))
+	{
+		if(cme->data.l[0]) {
+			XChangeProperty(dpy, cme->window, netatom[NetWMState], XA_ATOM, 32,
+			                PropModeReplace, (unsigned char*)&netatom[NetWMFullscreen], 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 {
+			XChangeProperty(dpy, cme->window, netatom[NetWMState], XA_ATOM, 32,
+			                PropModeReplace, (unsigned char*)0, 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);
 		}
 	}
 }
@@ -1248,18 +1337,22 @@ quit(const Arg *arg) {
 
 void
 resize(Client *c, int x, int y, int w, int h, Bool interact) {
+	if(applysizehints(c, &x, &y, &w, &h, interact))
+		resizeclient(c, x, y, w, h);
+}
+
+void
+resizeclient(Client *c, int x, int y, int w, int h) {
 	XWindowChanges wc;
 
-	if(applysizehints(c, &x, &y, &w, &h, interact)) {
-		c->x = wc.x = x;
-		c->y = wc.y = y;
-		c->w = wc.width = w;
-		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);
-	}
+	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
@@ -1318,7 +1411,7 @@ restack(Monitor *m) {
 	XEvent ev;
 	XWindowChanges wc;
 
-	drawbars();
+	drawbar(m);
 	if(!m->sel)
 		return;
 	if(m->sel->isfloating || !m->lt[m->sellt]->arrange)
@@ -1339,12 +1432,12 @@ restack(Monitor *m) {
 void
 run(void) {
 	XEvent ev;
-
 	/* main event loop */
 	XSync(dpy, False);
-	while(running && !XNextEvent(dpy, &ev))
+	while(running && !XNextEvent(dpy, &ev)) {
 		if(handler[ev.type])
 			handler[ev.type](&ev); /* call handler */
+	}
 }
 
 void
@@ -1377,7 +1470,7 @@ void
 sendmon(Client *c, Monitor *m) {
 	if(c->mon == m)
 		return;
-	unfocus(c);
+	unfocus(c, True);
 	detach(c);
 	detachstack(c);
 	c->mon = m;
@@ -1385,7 +1478,7 @@ sendmon(Client *c, Monitor *m) {
 	attach(c);
 	attachstack(c);
 	focus(NULL);
-	arrange();
+	arrange(NULL);
 }
 
 void
@@ -1402,10 +1495,11 @@ setlayout(const Arg *arg) {
 		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();
+		arrange(selmon);
 	else
-		drawbars();
+		drawbar(selmon);
 }
 
 /* arg > 1.0 will set mfact absolutly */
@@ -1419,15 +1513,16 @@ setmfact(const Arg *arg) {
 	if(f < 0.1 || f > 0.9)
 		return;
 	selmon->mfact = f;
-	arrange();
+	arrange(selmon);
 }
 
 void
 setup(void) {
-	unsigned int i;
-	int w;
 	XSetWindowAttributes wa;
 
+	/* clean up any zombies immediately */
+	sigchld(0);
+
 	/* init screen */
 	screen = DefaultScreen(dpy);
 	root = RootWindow(dpy, screen);
@@ -1442,6 +1537,8 @@ setup(void) {
 	wmatom[WMState] = XInternAtom(dpy, "WM_STATE", False);
 	netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
 	netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
+	netatom[NetWMState] = XInternAtom(dpy, "_NET_WM_STATE", False);
+	netatom[NetWMFullscreen] = XInternAtom(dpy, "_NET_WM_STATE_FULLSCREEN", False);
 	/* init cursors */
 	cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
 	cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
@@ -1459,10 +1556,6 @@ setup(void) {
 	if(!dc.font.set)
 		XSetFont(dpy, dc.gc, dc.font.xfont->fid);
 	/* init bars */
-	for(blw = i = 0; LENGTH(layouts) > 1 && i < LENGTH(layouts); i++) {
-		w = TEXTW(layouts[i].symbol);
-		blw = MAX(blw, w);
-	}
 	updatebars();
 	updatestatus();
 	/* EWMH support per view */
@@ -1496,13 +1589,14 @@ showhide(Client *c) {
 
 
 void
-sigchld(int signal) {
+sigchld(int unused) {
+	if(signal(SIGCHLD, sigchld) == SIG_ERR)
+		die("Can't install SIGCHLD handler");
 	while(0 < waitpid(-1, NULL, WNOHANG));
 }
 
 void
 spawn(const Arg *arg) {
-	signal(SIGCHLD, sigchld);
 	if(fork() == 0) {
 		if(dpy)
 			close(ConnectionNumber(dpy));
@@ -1518,7 +1612,7 @@ void
 tag(const Arg *arg) {
 	if(selmon->sel && arg->ui & TAGMASK) {
 		selmon->sel->tags = arg->ui & TAGMASK;
-		arrange();
+		arrange(selmon);
 	}
 }
 
@@ -1575,7 +1669,7 @@ togglebar(const Arg *arg) {
 	selmon->showbar = !selmon->showbar;
 	updatebarpos(selmon);
 	XMoveResizeWindow(dpy, selmon->barwin, selmon->wx, selmon->by, selmon->ww, bh);
-	arrange();
+	arrange(selmon);
 }
 
 void
@@ -1586,60 +1680,64 @@ togglefloating(const Arg *arg) {
 	if(selmon->sel->isfloating)
 		resize(selmon->sel, selmon->sel->x, selmon->sel->y,
 		       selmon->sel->w, selmon->sel->h, False);
-	arrange();
+	arrange(selmon);
 }
 
 void
 toggletag(const Arg *arg) {
-	unsigned int mask;
+	unsigned int newtags;
 
 	if(!selmon->sel)
 		return;
-	mask = selmon->sel->tags ^ (arg->ui & TAGMASK);
-	if(mask) {
-		selmon->sel->tags = mask;
-		arrange();
+	newtags = selmon->sel->tags ^ (arg->ui & TAGMASK);
+	if(newtags) {
+		selmon->sel->tags = newtags;
+		arrange(selmon);
 	}
 }
 
 void
 toggleview(const Arg *arg) {
-	unsigned int mask = selmon->tagset[selmon->seltags] ^ (arg->ui & TAGMASK);
+	unsigned int newtagset = selmon->tagset[selmon->seltags] ^ (arg->ui & TAGMASK);
 
-	if(mask) {
-		selmon->tagset[selmon->seltags] = mask;
-		arrange();
+	if(newtagset) {
+		selmon->tagset[selmon->seltags] = newtagset;
+		arrange(selmon);
 	}
 }
 
 void
-unfocus(Client *c) {
+unfocus(Client *c, Bool setfocus) {
 	if(!c)
 		return;
 	grabbuttons(c, False);
 	XSetWindowBorder(dpy, c->win, dc.norm[ColBorder]);
-	XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
+	if(setfocus)
+		XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
 }
 
 void
-unmanage(Client *c) {
+unmanage(Client *c, Bool destroyed) {
+	Monitor *m = c->mon;
 	XWindowChanges wc;
 
-	wc.border_width = c->oldbw;
 	/* The server grab construct avoids race conditions. */
-	XGrabServer(dpy);
-	XSetErrorHandler(xerrordummy);
-	XConfigureWindow(dpy, c->win, CWBorderWidth, &wc); /* restore border */
 	detach(c);
 	detachstack(c);
-	XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
-	setclientstate(c, WithdrawnState);
+	if(!destroyed) {
+		wc.border_width = c->oldbw;
+		XGrabServer(dpy);
+		XSetErrorHandler(xerrordummy);
+		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);
-	XSync(dpy, False);
-	XSetErrorHandler(xerror);
-	XUngrabServer(dpy);
 	focus(NULL);
-	arrange();
+	arrange(m);
 }
 
 void
@@ -1648,7 +1746,7 @@ unmapnotify(XEvent *e) {
 	XUnmapEvent *ev = &e->xunmap;
 
 	if((c = wintoclient(ev->window)))
-		unmanage(c);
+		unmanage(c, False);
 }
 
 void
@@ -1681,74 +1779,87 @@ updatebarpos(Monitor *m) {
 		m->by = -bh;
 }
 
-void
+Bool
 updategeom(void) {
-	int i, n = 1;
-	Client *c;
-	Monitor *newmons = NULL, *m = NULL, *tm;
+	Bool dirty = False;
 
-#ifdef XINERAMA
-	XineramaScreenInfo *info = NULL;
-
-	if(XineramaIsActive(dpy))
-		info = XineramaQueryScreens(dpy, &n);
-#endif /* XINERAMA */
-	/* allocate monitor(s) for the new geometry setup */
-	for(i = 0; i < n; i++) {
-		if(!(m = (Monitor *)malloc(sizeof(Monitor))))
-			die("fatal: could not malloc() %u bytes\n", sizeof(Monitor));
-		m->next = newmons;
-		newmons = m;
-	}
-	/* initialise monitor(s) */
 #ifdef XINERAMA
 	if(XineramaIsActive(dpy)) {
-		for(i = 0, m = newmons; m; m = m->next, i++) {
-			m->num = info[i].screen_number;
-			m->mx = m->wx = info[i].x_org;
-			m->my = m->wy = info[i].y_org;
-			m->mw = m->ww = info[i].width;
-			m->mh = m->wh = info[i].height;
-		}
+		int i, j, n, nn;
+		Client *c;
+		Monitor *m;
+		XineramaScreenInfo *info = XineramaQueryScreens(dpy, &nn);
+		XineramaScreenInfo *unique = NULL;
+
+		info = XineramaQueryScreens(dpy, &nn);
+		for(n = 0, m = mons; m; m = m->next, n++);
+		/* only consider unique geometries as separate screens */
+		if(!(unique = (XineramaScreenInfo *)malloc(sizeof(XineramaScreenInfo) * nn)))
+			die("fatal: could not malloc() %u bytes\n", sizeof(XineramaScreenInfo) * nn);
+		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;
+		if(n <= nn) {
+			for(i = 0; i < (nn - n); i++) { /* new monitors available */
+				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 = True;
+					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);
+				}
+		}
+		else { /* less monitors available nn < n */
+			for(i = nn; i < n; i++) {
+				for(m = mons; m && m->next; m = m->next);
+				while(m->clients) {
+					dirty = True;
+					c = m->clients;
+					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 */
 	{
-		m->num = 0;
-		m->mx = m->wx = 0;
-		m->my = m->wy = 0;
-		m->mw = m->ww = sw;
-		m->mh = m->wh = sh;
-	}
-	/* bar geometry setup */
-	for(m = newmons; m; m = m->next) {
-		m->sel = m->stack = m->clients = NULL;
-		m->seltags = 0;
-		m->sellt = 0;
-		m->tagset[0] = m->tagset[1] = 1;
-		m->mfact = mfact;
-		m->showbar = showbar;
-		m->topbar = topbar;
-		m->lt[0] = &layouts[0];
-		m->lt[1] = &layouts[1 % LENGTH(layouts)];
-		updatebarpos(m);
-	}
-	/* reassign left over clients of disappeared monitors */
-	for(tm = mons; tm; tm = tm->next)
-		while(tm->clients) {
-			c = tm->clients;
-			tm->clients = c->next;
-			detachstack(c);
-			c->mon = newmons;
-			attach(c);
-			attachstack(c);
+		if(!mons)
+			mons = createmon();
+		if(mons->mw != sw || mons->mh != sh) {
+			dirty = True;
+			mons->mw = mons->ww = sw;
+			mons->mh = mons->wh = sh;
+			updatebarpos(mons);
 		}
-	/* select focused monitor */
-	cleanupmons();
-	selmon = mons = newmons;
-	selmon = wintomon(root);
+	}
+	if(dirty) {
+		selmon = mons;
+		selmon = wintomon(root);
+	}
+	return dirty;
 }
 
 void
@@ -1807,8 +1918,8 @@ updatesizehints(Client *c) {
 	else
 		c->minw = c->minh = 0;
 	if(size.flags & PAspect) {
-		c->mina = (float)size.min_aspect.y / (float)size.min_aspect.x;
-		c->maxa = (float)size.max_aspect.x / (float)size.max_aspect.y;
+		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;
@@ -1853,7 +1964,7 @@ view(const Arg *arg) {
 	selmon->seltags ^= 1; /* toggle sel tagset */
 	if(arg->ui & TAGMASK)
 		selmon->tagset[selmon->seltags] = arg->ui & TAGMASK;
-	arrange();
+	arrange(selmon);
 }
 
 Client *
@@ -1931,13 +2042,13 @@ zoom(const Arg *arg) {
 	detach(c);
 	attach(c);
 	focus(c);
-	arrange();
+	arrange(c->mon);
 }
 
 int
 main(int argc, char *argv[]) {
 	if(argc == 2 && !strcmp("-v", argv[1]))
-		die("dwm-"VERSION", © 2006-2009 dwm engineers, see LICENSE for details\n");
+		die("dwm-"VERSION", © 2006-2010 dwm engineers, see LICENSE for details\n");
 	else if(argc != 1)
 		die("usage: dwm [-v]\n");
 	if(!setlocale(LC_CTYPE, "") || !XSupportsLocale())