# HG changeset patch
# User meillo@marmaro.de
# Date 1212178698 -7200
# Node ID 45f23169563eade62b1ff0173060bef2e8c17e9a
# Parent  bc512840e5a551ef552316512f250f90210013f6
renamed dwm to aewl
updated copyright notices
updated man page

diff -r bc512840e5a5 -r 45f23169563e LICENSE
--- a/LICENSE	Fri May 30 21:57:51 2008 +0200
+++ b/LICENSE	Fri May 30 22:18:18 2008 +0200
@@ -2,21 +2,22 @@
 
 (C)opyright MMVI-MMVII Anselm R. Garbe <garbeam at gmail dot com>
 (C)opyright MMVI-MMVII Sander van Dijk <a dot h dot vandijk at gmail dot com>
+(C)opyright MMVIII markus schnalke <meillo at marmaro dot de>
 
 Permission is hereby granted, free of charge, to any person obtaining a
 copy of this software and associated documentation files (the "Software"),
 to deal in the Software without restriction, including without limitation
 the rights to use, copy, modify, merge, publish, distribute, sublicense,
-and/or sell copies of the Software, and to permit persons to whom the 
+and/or sell copies of the Software, and to permit persons to whom the
 Software is furnished to do so, subject to the following conditions:
 
-The above copyright notice and this permission notice shall be included in 
-all copies or substantial portions of the Software. 
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
 
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL 
-THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 
-FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 DEALINGS IN THE SOFTWARE.
diff -r bc512840e5a5 -r 45f23169563e Makefile
--- a/Makefile	Fri May 30 21:57:51 2008 +0200
+++ b/Makefile	Fri May 30 22:18:18 2008 +0200
@@ -1,53 +1,53 @@
-# dwm - dynamic window manager
+# aewl - a fork of dwm, the dynamic window manager
 #   (C)opyright MMVI-MMVII Anselm R. Garbe
 
 include config.mk
 
 
-all: options dwm
+all: options aewl
 
 options:
-	@echo dwm build options:
+	@echo aewl build options:
 	@echo "CFLAGS   = ${CFLAGS}"
 	@echo "LDFLAGS  = ${LDFLAGS}"
 	@echo "CC       = ${CC}"
 
-dwm.o: dwm.c config.h config.mk
+aewl.o: aewl.c config.h config.mk
 	@echo CC $<
 	@${CC} -c ${CFLAGS} $<
 
-dwm: dwm.o
+aewl: aewl.o
 	@echo CC -o $@
-	@${CC} -o $@ dwm.o ${LDFLAGS}
+	@${CC} -o $@ aewl.o ${LDFLAGS}
 	@strip $@
 
 clean:
 	@echo cleaning
-	@rm -f dwm *.o dwm-${VERSION}.tar.gz
+	@rm -f aewl *.o aewl-*.tar.gz
 
 dist: clean
 	@echo creating dist tarball
-	@mkdir -p dwm-${VERSION}
-	@cp -R LICENSE Makefile README config.*.h config.mk \
-		dwm.1 dwm.h ${SRC} dwm-${VERSION}
-	@tar -cf dwm-${VERSION}.tar dwm-${VERSION}
-	@gzip dwm-${VERSION}.tar
-	@rm -rf dwm-${VERSION}
+	@mkdir -p aewl-${VERSION}
+	@cp -R LICENSE Makefile README config.h config.mk \
+		aewl.1 aewl.h ${SRC} aewl-${VERSION}
+	@tar -cf aewl-${VERSION}.tar aewl-${VERSION}
+	@gzip aewl-${VERSION}.tar
+	@rm -rf aewl-${VERSION}
 
 install: all
 	@echo installing executable file to ${DESTDIR}${PREFIX}/bin
 	@mkdir -p ${DESTDIR}${PREFIX}/bin
-	@cp -f dwm ${DESTDIR}${PREFIX}/bin
-	@chmod 755 ${DESTDIR}${PREFIX}/bin/dwm
+	@cp -f aewl ${DESTDIR}${PREFIX}/bin
+	@chmod 755 ${DESTDIR}${PREFIX}/bin/aewl
 	@echo installing manual page to ${DESTDIR}${MANPREFIX}/man1
 	@mkdir -p ${DESTDIR}${MANPREFIX}/man1
-	@sed 's/VERSION/${VERSION}/g' < dwm.1 > ${DESTDIR}${MANPREFIX}/man1/dwm.1
-	@chmod 644 ${DESTDIR}${MANPREFIX}/man1/dwm.1
+	@sed 's/VERSION/${VERSION}/g' < aewl.1 > ${DESTDIR}${MANPREFIX}/man1/aewl.1
+	@chmod 644 ${DESTDIR}${MANPREFIX}/man1/aewl.1
 
 uninstall:
 	@echo removing executable file from ${DESTDIR}${PREFIX}/bin
-	@rm -f ${DESTDIR}${PREFIX}/bin/dwm
+	@rm -f ${DESTDIR}${PREFIX}/bin/aewl
 	@echo removing manual page from ${DESTDIR}${MANPREFIX}/man1
-	@rm -f ${DESTDIR}${MANPREFIX}/man1/dwm.1
+	@rm -f ${DESTDIR}${MANPREFIX}/man1/aewl.1
 
 .PHONY: all options clean dist install uninstall
diff -r bc512840e5a5 -r 45f23169563e aewl.1
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/aewl.1	Fri May 30 22:18:18 2008 +0200
@@ -0,0 +1,127 @@
+.TH AEWL 1 aewl-VERSION
+
+
+.SH NAME
+aewl \- a fork of dwm, the dynamic window manager
+
+
+.SH SYNOPSIS
+.B aewl
+.RB [ \-v ]
+
+
+.SH DESCRIPTION
+This man page is the one from dwm 4.4.1 on which aewl is based.
+It is partly updated, but not totally.
+.P
+dwm is a dynamic window manager for X. It manages windows in tiling and
+floating modes. Either mode can be applied dynamically, optimizing the
+environment for the application in use and the task performed.
+.P
+In tiling mode windows are managed in a master and stacking area. The master
+area contains the windows which currently need most attention, whereas the
+stacking area contains all other windows. In floating mode windows can be
+resized and moved freely. Dialog windows are always managed floating,
+regardless of the mode applied.
+.P
+Windows are grouped by tags. Each window can be tagged with one or multiple
+tags. Selecting certain tags displays all windows with these tags.
+.P
+dwm contains a small status bar which displays all available tags, the mode,
+the title of the focused window, and the text read from standard input. The
+selected tags are indicated with a different color. The tags of the focused
+window are indicated with a filled square in the top left corner.  The tags
+which are applied to one or more windows are indicated with an empty square in
+the top left corner.
+.P
+dwm draws a small border around windows to indicate the focus state.
+
+
+.SH OPTIONS
+.TP
+.B \-v
+prints version information to standard output, then exits.
+
+
+.SH USAGE
+
+.SS Status bar
+.TP
+.B Standard input
+is read and displayed in the status text area.
+.TP
+.B Button1
+click on the bar to display the other tag.
+
+.SS Keyboard commands
+.TP
+.B Mod1-Shift-Return
+Start
+.BR xterm (1).
+.TP
+.B Mod1-Tab
+Focus next window.
+.TP
+.B Mod1-i
+Increase the number of windows in the master area (tiling mode only).
+.TP
+.B Mod1-d
+Decrease the number of windows in the master area (tiling mode only).
+.TP
+.B Mod1-F1
+View other tag.
+.TP
+.B Mod1-F3
+Move current window to other tag.
+.TP
+.B Mod1-^
+Start
+.BR dmenu (1)
+.TP
+.B Mod1-1
+Zooms/cycles current window to/from master area (tiling mode), toggles maximization current window (floating mode).
+.TP
+.B Mod1-2
+Close focused window.
+.TP
+.B Mod1-space
+Toggle between tiling and max mode (affects all windows).
+.TP
+.B Mod1-Shift-space
+Toggle focused window between floating and non-floating state.
+.TP
+.B Mod1-Shift-q
+Quit dwm.
+
+.SS Mouse commands
+.TP
+.B Mod1-Button1
+Move current window while dragging (floating mode only).
+.TP
+.B Mod1-Button3
+Resize current window while dragging (floating mode only).
+
+
+.SH CUSTOMIZATION
+dwm is customized by creating a custom config.h and (re)compiling the source
+code. This keeps it fast, secure and simple.
+
+
+.SH SEE ALSO
+.BR dmenu (1)
+
+
+.SH BUGS
+The status bar may display
+.BR "EOF"
+when dwm has been started by an X session manager like
+.BR xdm (1),
+because those close standard output before executing dwm.
+.P
+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 .
diff -r bc512840e5a5 -r 45f23169563e aewl.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/aewl.c	Fri May 30 22:18:18 2008 +0200
@@ -0,0 +1,1783 @@
+/* (C)opyright MMVI-MMVII Anselm R. Garbe <garbeam at gmail dot com>
+ * (C)opyright MMVIII markus schnalke <meillo at marmaro dot de>
+ * See LICENSE file for license details.
+ *
+ * dynamic window manager is designed like any other X client as well. It is
+ * driven through handling X events. In contrast to other X clients, a window
+ * manager selects for SubstructureRedirectMask on the root window, to receive
+ * events about window (dis-)appearance.  Only one X connection at a time is
+ * allowed to select for this event mask.
+ *
+ * Calls to fetch an X event from the event queue are blocking.  Due reading
+ * status text from standard input, a select()-driven main loop has been
+ * implemented which selects for reads on the X connection and STDIN_FILENO to
+ * handle all data smoothly. The event handlers of dwm are organized in an
+ * array which is accessed whenever a new event has been fetched. This allows
+ * event dispatching in O(1) time.
+ *
+ * Each child of the root window is called a client, except windows which have
+ * set the override_redirect flag.  Clients are organized in a 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.
+ *
+ * Keys and tagging rules are organized as arrays and defined in the config.h
+ * file. These arrays are kept static in event.o and tag.o respectively,
+ * because no other part of dwm needs access to them.  The current mode is
+ * represented by the arrange() function pointer, which wether points to
+ * dofloat() or dotile().
+ *
+ * To understand everything else, start reading main.c:main().
+ */
+
+#include "config.h"
+#include <errno.h>
+#include <locale.h>
+#include <regex.h>
+#include <stdio.h>
+#include <stdarg.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/select.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <X11/cursorfont.h>
+#include <X11/keysym.h>
+#include <X11/Xatom.h>
+#include <X11/Xlib.h>
+#include <X11/Xproto.h>
+#include <X11/Xutil.h>
+
+/* mask shorthands, used in event.c and client.c */
+#define BUTTONMASK		(ButtonPressMask | ButtonReleaseMask)
+
+enum { NetSupported, NetWMName, NetLast };		/* EWMH atoms */
+enum { WMProtocols, WMDelete, WMState, WMLast };	/* default atoms */
+enum { CurNormal, CurResize, CurMove, CurLast };	/* cursor */
+enum { ColBorder, ColFG, ColBG, ColLast };		/* color */
+
+typedef struct {
+	int ascent;
+	int descent;
+	int height;
+	XFontSet set;
+	XFontStruct *xfont;
+} Fnt;
+
+typedef struct {
+	int x, y, w, h;
+	unsigned long norm[ColLast];
+	unsigned long sel[ColLast];
+	Drawable drawable;
+	Fnt font;
+	GC gc;
+} DC; /* draw context */
+
+typedef struct Client Client;
+struct Client {
+	char name[256];
+	int x, y, w, h;
+	int rx, ry, rw, rh; /* revert geometry */
+	int basew, baseh, incw, inch, maxw, maxh, minw, minh;
+	int minax, minay, maxax, maxay;
+	long flags;
+	unsigned int border;
+	Bool isfixed, isfloat, ismax;
+	Bool tag;
+	Client *next;
+	Client *prev;
+	Client *snext;
+	Window win;
+};
+
+typedef struct {
+	const char *clpattern;
+	int tag;
+	Bool isfloat;
+} Rule;
+
+typedef struct {
+	regex_t *clregex;
+} RReg;
+
+
+typedef struct {
+	unsigned long mod;
+	KeySym keysym;
+	void (*func)(const char* cmd);
+	const char* cmd;
+} Key;
+
+
+#define CLEANMASK(mask) (mask & ~(numlockmask | LockMask))
+#define MOUSEMASK		(BUTTONMASK | PointerMotionMask)
+
+
+
+const char *tags[];			/* all tags */
+char stext[256];				/* status text */
+int bh, bmw;				/* bar height, bar mode label width */
+int screen, sx, sy, sw, sh;		/* screen geometry */
+int wax, way, wah, waw;			/* windowarea geometry */
+unsigned int nmaster;		/* number of master clients */
+unsigned int ntags, numlockmask;		/* number of tags, dynamic lock mask */
+void (*handler[LASTEvent])(XEvent *);	/* event handler */
+void (*arrange)(void);			/* arrange function, indicates mode  */
+Atom wmatom[WMLast], netatom[NetLast];
+Bool running, selscreen, seltag;	/* seltag is array of Bool */
+Client *clients, *sel, *stack;		/* global client list and stack */
+Cursor cursor[CurLast];
+DC dc;					/* global draw context */
+Display *dpy;
+Window root, barwin;
+
+Bool running = True;
+Bool selscreen = True;
+Client *clients = NULL;
+Client *sel = NULL;
+Client *stack = NULL;
+DC dc = {0};
+
+static int (*xerrorxlib)(Display *, XErrorEvent *);
+static Bool otherwm, readin;
+static RReg *rreg = NULL;
+static unsigned int len = 0;
+
+
+TAGS
+RULES
+
+
+/* client.c */
+void configure(Client *c);		/* send synthetic configure event */
+void focus(Client *c);			/* focus c, c may be NULL */
+Client *getclient(Window w);		/* return client of w */
+Bool isprotodel(Client *c);		/* returns True if c->win supports wmatom[WMDelete] */
+void manage(Window w, XWindowAttributes *wa);	/* manage new client */
+void resize(Client *c, Bool sizehints);	/* resize c*/
+void updatesizehints(Client *c);		/* update the size hint variables of c */
+void updatetitle(Client *c);		/* update the name of c */
+void unmanage(Client *c);		/* destroy c */
+
+/* draw.c */
+void drawstatus(void);			/* draw the bar */
+unsigned long getcolor(const char *colstr);	/* return color of colstr */
+void setfont(const char *fontstr);	/* set the font for DC */
+unsigned int textw(const char *text);	/* return the width of text in px*/
+
+/* event.c */
+void grabkeys(void);			/* grab all keys defined in config.h */
+void procevent(void);			/* process pending X events */
+
+/* main.c */
+void sendevent(Window w, Atom a, long value);	/* send synthetic event to w */
+int xerror(Display *dsply, XErrorEvent *ee);	/* dwm's X error handler */
+
+/* tag.c */
+void initrregs(void);			/* initialize regexps of rules defined in config.h */
+Client *getnext(Client *c);		/* returns next visible client */
+void settags(Client *c, Client *trans);	/* sets tags of c */
+
+/* util.c */
+void *emallocz(unsigned int size);	/* allocates zero-initialized memory, exits on error */
+void eprint(const char *errstr, ...);	/* prints errstr and exits with 1 */
+
+/* view.c */
+void detach(Client *c);			/* detaches c from global client list */
+void dofloat(void);			/* arranges all windows floating */
+void dotile(void);			/* arranges all windows tiled */
+void domax(void);            /* arranges all windows fullscreen */
+Bool isvisible(Client *c);		/* returns True if client is visible */
+void restack(void);			/* restores z layers of all clients */
+
+
+void toggleview();			/* toggle the viewed tag */
+void focusnext();		/* focuses next visible client  */
+void zoom();			/* zooms the focused client to master area */
+void killclient();		/* kill c nicely */
+void quit();			/* quit dwm nicely */
+void togglemode();		/* toggles global arrange function (dotile/dofloat) */
+void togglefloat();		/* toggles focusesd client between floating/non-floating state */
+void incnmaster();		/* increments nmaster */
+void decnmaster();		/* decrements nmaster */
+void toggletag();		/* toggles c tag */
+void spawn(const char* cmd);			/* forks a new subprocess with cmd */
+
+
+
+
+
+
+
+
+
+
+/* from view.c */
+/* static */
+
+static Client *
+nexttiled(Client *c) {
+	for(c = getnext(c); c && c->isfloat; c = getnext(c->next));
+	return c;
+}
+
+static void
+togglemax(Client *c) {
+	XEvent ev;
+		
+	if(c->isfixed)
+		return;
+
+	if((c->ismax = !c->ismax)) {
+		c->rx = c->x; c->x = wax;
+		c->ry = c->y; c->y = way;
+		c->rw = c->w; c->w = waw - 2 * BORDERPX;
+		c->rh = c->h; c->h = wah - 2 * BORDERPX;
+	}
+	else {
+		c->x = c->rx;
+		c->y = c->ry;
+		c->w = c->rw;
+		c->h = c->rh;
+	}
+	resize(c, True);
+	while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
+}
+
+
+
+void (*arrange)(void) = DEFMODE;
+
+void
+detach(Client *c) {
+	if(c->prev)
+		c->prev->next = c->next;
+	if(c->next)
+		c->next->prev = c->prev;
+	if(c == clients)
+		clients = c->next;
+	c->next = c->prev = NULL;
+}
+
+void
+dofloat(void) {
+	Client *c;
+
+	for(c = clients; c; c = c->next) {
+		if(isvisible(c)) {
+			resize(c, True);
+		}
+		else
+			XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
+	}
+	if(!sel || !isvisible(sel)) {
+		for(c = stack; c && !isvisible(c); c = c->snext);
+		focus(c);
+	}
+	restack();
+}
+
+void
+dotile(void) {
+	unsigned int i, n, mw, mh, tw, th;
+	Client *c;
+
+	for(n = 0, c = nexttiled(clients); c; c = nexttiled(c->next))
+		n++;
+	/* window geoms */
+	mh = (n > nmaster) ? wah / nmaster : wah / (n > 0 ? n : 1);
+	mw = (n > nmaster) ? waw / 2 : waw;
+	th = (n > nmaster) ? wah / (n - nmaster) : 0;
+	tw = waw - mw;
+
+	for(i = 0, c = clients; c; c = c->next)
+		if(isvisible(c)) {
+			if(c->isfloat) {
+				resize(c, True);
+				continue;
+			}
+			c->ismax = False;
+			c->x = wax;
+			c->y = way;
+			if(i < nmaster) {
+				c->y += i * mh;
+				c->w = mw - 2 * BORDERPX;
+				c->h = mh - 2 * BORDERPX;
+			}
+			else {  /* tile window */
+				c->x += mw;
+				c->w = tw - 2 * BORDERPX;
+				if(th > 2 * BORDERPX) {
+					c->y += (i - nmaster) * th;
+					c->h = th - 2 * BORDERPX;
+				}
+				else /* fallback if th <= 2 * BORDERPX */
+					c->h = wah - 2 * BORDERPX;
+			}
+			resize(c, False);
+			i++;
+		}
+		else
+			XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
+	if(!sel || !isvisible(sel)) {
+		for(c = stack; c && !isvisible(c); c = c->snext);
+		focus(c);
+	}
+	restack();
+}
+
+/* begin code by mitch */
+void
+arrangemax(Client *c) {
+  if(c == sel) {
+    c->ismax = True;
+    c->x = sx;
+    c->y = bh;
+    c->w = sw - 2 * BORDERPX;
+    c->h = sh - bh - 2 * BORDERPX;
+    XRaiseWindow(dpy, c->win);
+  } else {
+    c->ismax = False;
+    XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
+    XLowerWindow(dpy, c->win);
+  }
+}
+
+void
+domax(void) {
+  Client *c;
+
+  for(c = clients; c; c = c->next) {
+    if(isvisible(c)) {
+      if(c->isfloat) {
+        resize(c, True);
+        continue;
+      }
+      arrangemax(c);
+      resize(c, False);
+    } else {
+      XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
+    }
+
+  }
+  if(!sel || !isvisible(sel)) {
+    for(c = stack; c && !isvisible(c); c = c->snext);
+    focus(c);
+  }
+  restack();
+}
+/* end code by mitch */
+
+void
+focusnext() {
+	Client *c;
+
+	if(!sel)
+		return;
+	if(!(c = getnext(sel->next)))
+		c = getnext(clients);
+	if(c) {
+		focus(c);
+		restack();
+	}
+}
+
+void
+incnmaster() {
+	if((arrange == dofloat) || (wah / (nmaster + 1) <= 2 * BORDERPX))
+		return;
+	nmaster++;
+	if(sel)
+		arrange();
+	else
+		drawstatus();
+}
+
+void
+decnmaster() {
+	if((arrange == dofloat) || (nmaster <= 1))
+		return;
+	nmaster--;
+	if(sel)
+		arrange();
+	else
+		drawstatus();
+}
+
+Bool
+isvisible(Client *c) {
+	if((c->tag && seltag) || (!c->tag && !seltag)) {
+		return True;
+	}
+	return False;
+}
+
+void
+restack(void) {
+	Client *c;
+	XEvent ev;
+
+	drawstatus();
+	if(!sel)
+		return;
+	if(sel->isfloat || arrange == dofloat)
+		XRaiseWindow(dpy, sel->win);
+
+  /* begin code by mitch */
+  if(arrange == domax) {
+    for(c = nexttiled(clients); c; c = nexttiled(c->next)) {
+      arrangemax(c);
+      resize(c, False);
+    }
+
+  } else if (arrange == dotile) {
+  /* end code by mitch */
+
+		if(!sel->isfloat)
+			XLowerWindow(dpy, sel->win);
+		for(c = nexttiled(clients); c; c = nexttiled(c->next)) {
+			if(c == sel)
+				continue;
+			XLowerWindow(dpy, c->win);
+		}
+	}
+	XSync(dpy, False);
+	while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
+}
+
+void
+togglefloat() {
+	if (!sel || arrange == dofloat)
+		return;
+	sel->isfloat = !sel->isfloat;
+	arrange();
+}
+
+void
+togglemode() {
+  /* only toggle between tile and max - float is just available through togglefloat */
+  arrange = (arrange == dotile) ? domax : dotile;
+	if(sel)
+		arrange();
+	else
+		drawstatus();
+}
+
+void
+toggleview() {
+	seltag = !seltag;
+	arrange();
+}
+
+void
+zoom() {
+	unsigned int n;
+	Client *c;
+
+	if(!sel)
+		return;
+	if(sel->isfloat || (arrange == dofloat)) {
+		togglemax(sel);
+		return;
+	}
+	for(n = 0, c = nexttiled(clients); c; c = nexttiled(c->next))
+		n++;
+
+	if((c = sel) == nexttiled(clients))
+		if(!(c = nexttiled(c->next)))
+			return;
+	detach(c);
+	if(clients)
+		clients->prev = c;
+	c->next = clients;
+	clients = c;
+	focus(c);
+	arrange();
+}
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+/* from util.c */
+
+
+void *
+emallocz(unsigned int size) {
+	void *res = calloc(1, size);
+
+	if(!res)
+		eprint("fatal: could not malloc() %u bytes\n", size);
+	return res;
+}
+
+void
+eprint(const char *errstr, ...) {
+	va_list ap;
+
+	va_start(ap, errstr);
+	vfprintf(stderr, errstr, ap);
+	va_end(ap);
+	exit(EXIT_FAILURE);
+}
+
+void
+spawn(const char* cmd) {
+	static char *shell = NULL;
+
+	if(!shell && !(shell = getenv("SHELL")))
+		shell = "/bin/sh";
+	if(!cmd)
+		return;
+	/* The double-fork construct avoids zombie processes and keeps the code
+	 * clean from stupid signal handlers. */
+	if(fork() == 0) {
+		if(fork() == 0) {
+			if(dpy)
+				close(ConnectionNumber(dpy));
+			setsid();
+			execl(shell, shell, "-c", cmd, (char *)NULL);
+			fprintf(stderr, "dwm: execl '%s -c %s'", shell, cmd);
+			perror(" failed");
+		}
+		exit(0);
+	}
+	wait(0);
+}
+
+
+
+
+
+
+
+
+
+
+
+
+
+/* from tag.c */
+
+/* static */
+
+Client *
+getnext(Client *c) {
+	for(; c && !isvisible(c); c = c->next);
+	return c;
+}
+
+void
+initrregs(void) {
+	unsigned int i;
+	regex_t *reg;
+
+	if(rreg)
+		return;
+	len = sizeof rule / sizeof rule[0];
+	rreg = emallocz(len * sizeof(RReg));
+	for(i = 0; i < len; i++) {
+		if(rule[i].clpattern) {
+			reg = emallocz(sizeof(regex_t));
+			if(regcomp(reg, rule[i].clpattern, REG_EXTENDED))
+				free(reg);
+			else
+				rreg[i].clregex = reg;
+		}
+	}
+}
+
+void
+settags(Client *c, Client *trans) {
+	char prop[512];
+	unsigned int i;
+	regmatch_t tmp;
+	Bool matched = trans != NULL;
+	XClassHint ch = { 0 };
+
+	if(matched) {
+		c->tag = trans->tag;
+	} else {
+		XGetClassHint(dpy, c->win, &ch);
+		snprintf(prop, sizeof prop, "%s:%s:%s",
+				ch.res_class ? ch.res_class : "",
+				ch.res_name ? ch.res_name : "", c->name);
+		for(i = 0; i < len; i++)
+			if(rreg[i].clregex && !regexec(rreg[i].clregex, prop, 1, &tmp, 0)) {
+				c->isfloat = rule[i].isfloat;
+				if (rule[i].tag < 0) {
+					c->tag = seltag;
+				} else if (rule[i].tag == 0) {
+					c->tag = True;
+				} else {
+					c->tag = False;
+				}
+				matched = True;
+        break;  /* perform only the first rule matching */
+			}
+		if(ch.res_class)
+			XFree(ch.res_class);
+		if(ch.res_name)
+			XFree(ch.res_name);
+	}
+	if(!matched) {
+		c->tag = seltag;
+	}
+}
+
+void
+toggletag() {
+	if(!sel)
+		return;
+	sel->tag = !sel->tag;
+	toggleview();
+}
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+/* from event.c */
+/* static */
+
+KEYS
+
+
+
+static void
+movemouse(Client *c) {
+	int x1, y1, ocx, ocy, di;
+	unsigned int dui;
+	Window dummy;
+	XEvent ev;
+
+	ocx = c->x;
+	ocy = c->y;
+	if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
+			None, cursor[CurMove], CurrentTime) != GrabSuccess)
+		return;
+	c->ismax = False;
+	XQueryPointer(dpy, root, &dummy, &dummy, &x1, &y1, &di, &di, &dui);
+	for(;;) {
+		XMaskEvent(dpy, MOUSEMASK | ExposureMask | SubstructureRedirectMask, &ev);
+		switch (ev.type) {
+		case ButtonRelease:
+			resize(c, True);
+			XUngrabPointer(dpy, CurrentTime);
+			return;
+		case ConfigureRequest:
+		case Expose:
+		case MapRequest:
+			handler[ev.type](&ev);
+			break;
+		case MotionNotify:
+			XSync(dpy, False);
+			c->x = ocx + (ev.xmotion.x - x1);
+			c->y = ocy + (ev.xmotion.y - y1);
+			if(abs(wax + c->x) < SNAP)
+				c->x = wax;
+			else if(abs((wax + waw) - (c->x + c->w + 2 * c->border)) < SNAP)
+				c->x = wax + waw - c->w - 2 * c->border;
+			if(abs(way - c->y) < SNAP)
+				c->y = way;
+			else if(abs((way + wah) - (c->y + c->h + 2 * c->border)) < SNAP)
+				c->y = way + wah - c->h - 2 * c->border;
+			resize(c, False);
+			break;
+		}
+	}
+}
+
+static void
+resizemouse(Client *c) {
+	int ocx, ocy;
+	int nw, nh;
+	XEvent ev;
+
+	ocx = c->x;
+	ocy = c->y;
+	if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
+			None, cursor[CurResize], CurrentTime) != GrabSuccess)
+		return;
+	c->ismax = False;
+	XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->border - 1, c->h + c->border - 1);
+	for(;;) {
+		XMaskEvent(dpy, MOUSEMASK | ExposureMask | SubstructureRedirectMask , &ev);
+		switch(ev.type) {
+		case ButtonRelease:
+			resize(c, True);
+			XUngrabPointer(dpy, CurrentTime);
+			return;
+		case ConfigureRequest:
+		case Expose:
+		case MapRequest:
+			handler[ev.type](&ev);
+			break;
+		case MotionNotify:
+			XSync(dpy, False);
+			nw = ev.xmotion.x - ocx - 2 * c->border + 1;
+			c->w = nw > 0 ? nw : 1;
+			nh = ev.xmotion.y - ocy - 2 * c->border + 1;
+			c->h = nh > 0 ? nh : 1;
+			resize(c, True);
+			break;
+		}
+	}
+}
+
+static void
+buttonpress(XEvent *e) {
+	int x;
+	int i;
+	Client *c;
+	XButtonPressedEvent *ev = &e->xbutton;
+
+	if(barwin == ev->window) {
+		if(ev->button == Button1) {
+			toggleview();
+		}
+		return;
+	} else if((c = getclient(ev->window))) {
+		focus(c);
+		if(CLEANMASK(ev->state) != MODKEY)
+			return;
+		if(ev->button == Button1 && (arrange == dofloat || c->isfloat)) {
+			restack();
+			movemouse(c);
+		} else if(ev->button == Button3 && (arrange == dofloat || c->isfloat) && !c->isfixed) {
+			restack();
+			resizemouse(c);
+		}
+	}
+}
+
+static void
+configurerequest(XEvent *e) {
+	unsigned long newmask;
+	Client *c;
+	XConfigureRequestEvent *ev = &e->xconfigurerequest;
+	XWindowChanges wc;
+
+	if((c = getclient(ev->window))) {
+		c->ismax = False;
+		if(ev->value_mask & CWX)
+			c->x = ev->x;
+		if(ev->value_mask & CWY)
+			c->y = ev->y;
+		if(ev->value_mask & CWWidth)
+			c->w = ev->width;
+		if(ev->value_mask & CWHeight)
+			c->h = ev->height;
+		if(ev->value_mask & CWBorderWidth)
+			c->border = ev->border_width;
+		wc.x = c->x;
+		wc.y = c->y;
+		wc.width = c->w;
+		wc.height = c->h;
+		newmask = ev->value_mask & (~(CWSibling | CWStackMode | CWBorderWidth));
+		if(newmask)
+			XConfigureWindow(dpy, c->win, newmask, &wc);
+		else
+			configure(c);
+		XSync(dpy, False);
+		if(c->isfloat) {
+			resize(c, False);
+			if(!isvisible(c))
+				XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
+		}
+		else
+			arrange();
+	} else {
+		wc.x = ev->x;
+		wc.y = ev->y;
+		wc.width = ev->width;
+		wc.height = ev->height;
+		wc.border_width = ev->border_width;
+		wc.sibling = ev->above;
+		wc.stack_mode = ev->detail;
+		XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
+		XSync(dpy, False);
+	}
+}
+
+static void
+destroynotify(XEvent *e) {
+	Client *c;
+	XDestroyWindowEvent *ev = &e->xdestroywindow;
+
+	if((c = getclient(ev->window)))
+		unmanage(c);
+}
+
+static void
+enternotify(XEvent *e) {
+	Client *c;
+	XCrossingEvent *ev = &e->xcrossing;
+
+	if(ev->mode != NotifyNormal || ev->detail == NotifyInferior)
+		return;
+	if((c = getclient(ev->window)) && isvisible(c))
+		focus(c);
+	else if(ev->window == root) {
+		selscreen = True;
+		for(c = stack; c && !isvisible(c); c = c->snext);
+		focus(c);
+	}
+}
+
+static void
+expose(XEvent *e) {
+	XExposeEvent *ev = &e->xexpose;
+
+	if(ev->count == 0) {
+		if(barwin == ev->window)
+			drawstatus();
+	}
+}
+
+static void
+keypress(XEvent *e) {
+	static unsigned int len = sizeof key / sizeof key[0];
+	unsigned int i;
+	KeySym keysym;
+	XKeyEvent *ev = &e->xkey;
+
+	keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
+	for(i = 0; i < len; i++) {
+		if(keysym == key[i].keysym && CLEANMASK(key[i].mod) == CLEANMASK(ev->state)) {
+			if(key[i].func)
+				key[i].func(key[i].cmd);
+		}
+	}
+}
+
+static void
+leavenotify(XEvent *e) {
+	XCrossingEvent *ev = &e->xcrossing;
+
+	if((ev->window == root) && !ev->same_screen) {
+		selscreen = False;
+		focus(NULL);
+	}
+}
+
+static void
+mappingnotify(XEvent *e) {
+	XMappingEvent *ev = &e->xmapping;
+
+	XRefreshKeyboardMapping(ev);
+	if(ev->request == MappingKeyboard)
+		grabkeys();
+}
+
+static void
+maprequest(XEvent *e) {
+	static XWindowAttributes wa;
+	XMapRequestEvent *ev = &e->xmaprequest;
+
+	if(!XGetWindowAttributes(dpy, ev->window, &wa))
+		return;
+	if(wa.override_redirect) {
+		XSelectInput(dpy, ev->window,
+				(StructureNotifyMask | PropertyChangeMask));
+		return;
+	}
+	if(!getclient(ev->window))
+		manage(ev->window, &wa);
+}
+
+static void
+propertynotify(XEvent *e) {
+	Client *c;
+	Window trans;
+	XPropertyEvent *ev = &e->xproperty;
+
+	if(ev->state == PropertyDelete)
+		return; /* ignore */
+	if((c = getclient(ev->window))) {
+		switch (ev->atom) {
+			default: break;
+			case XA_WM_TRANSIENT_FOR:
+				XGetTransientForHint(dpy, c->win, &trans);
+				if(!c->isfloat && (c->isfloat = (trans != 0)))
+					arrange();
+				break;
+			case XA_WM_NORMAL_HINTS:
+				updatesizehints(c);
+				break;
+		}
+		if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
+			updatetitle(c);
+			if(c == sel)
+				drawstatus();
+		}
+	}
+}
+
+static void
+unmapnotify(XEvent *e) {
+	Client *c;
+	XUnmapEvent *ev = &e->xunmap;
+
+	if((c = getclient(ev->window)))
+		unmanage(c);
+}
+
+
+
+void (*handler[LASTEvent]) (XEvent *) = {
+	[ButtonPress] = buttonpress,
+	[ConfigureRequest] = configurerequest,
+	[DestroyNotify] = destroynotify,
+	[EnterNotify] = enternotify,
+	[LeaveNotify] = leavenotify,
+	[Expose] = expose,
+	[KeyPress] = keypress,
+	[MappingNotify] = mappingnotify,
+	[MapRequest] = maprequest,
+	[PropertyNotify] = propertynotify,
+	[UnmapNotify] = unmapnotify
+};
+
+void
+grabkeys(void) {
+	static unsigned int len = sizeof key / sizeof key[0];
+	unsigned int i;
+	KeyCode code;
+
+	XUngrabKey(dpy, AnyKey, AnyModifier, root);
+	for(i = 0; i < len; i++) {
+		code = XKeysymToKeycode(dpy, key[i].keysym);
+		XGrabKey(dpy, code, key[i].mod, root, True,
+				GrabModeAsync, GrabModeAsync);
+		XGrabKey(dpy, code, key[i].mod | LockMask, root, True,
+				GrabModeAsync, GrabModeAsync);
+		XGrabKey(dpy, code, key[i].mod | numlockmask, root, True,
+				GrabModeAsync, GrabModeAsync);
+		XGrabKey(dpy, code, key[i].mod | numlockmask | LockMask, root, True,
+				GrabModeAsync, GrabModeAsync);
+	}
+}
+
+void
+procevent(void) {
+	XEvent ev;
+
+	while(XPending(dpy)) {
+		XNextEvent(dpy, &ev);
+		if(handler[ev.type])
+			(handler[ev.type])(&ev); /* call handler */
+	}
+}
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+/* from draw.c */
+/* static */
+
+static unsigned int
+textnw(const char *text, unsigned int len) {
+	XRectangle r;
+
+	if(dc.font.set) {
+		XmbTextExtents(dc.font.set, text, len, NULL, &r);
+		return r.width;
+	}
+	return XTextWidth(dc.font.xfont, text, len);
+}
+
+static void
+drawtext(const char *text, unsigned long col[ColLast]) {
+	int x, y, w, h;
+	static char buf[256];
+	unsigned int len, olen;
+	XGCValues gcv;
+	XRectangle r = { dc.x, dc.y, dc.w, dc.h };
+
+	XSetForeground(dpy, dc.gc, col[ColBG]);
+	XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
+	if(!text)
+		return;
+	w = 0;
+	olen = len = strlen(text);
+	if(len >= sizeof buf)
+		len = sizeof buf - 1;
+	memcpy(buf, text, len);
+	buf[len] = 0;
+	h = dc.font.ascent + dc.font.descent;
+	y = dc.y + (dc.h / 2) - (h / 2) + dc.font.ascent;
+	x = dc.x + (h / 2);
+	/* shorten text if necessary */
+	while(len && (w = textnw(buf, len)) > dc.w - h)
+		buf[--len] = 0;
+	if(len < olen) {
+		if(len > 1)
+			buf[len - 1] = '.';
+		if(len > 2)
+			buf[len - 2] = '.';
+		if(len > 3)
+			buf[len - 3] = '.';
+	}
+	if(w > dc.w)
+		return; /* too long */
+	gcv.foreground = col[ColFG];
+	if(dc.font.set) {
+		XChangeGC(dpy, dc.gc, GCForeground, &gcv);
+		XmbDrawString(dpy, dc.drawable, dc.font.set, dc.gc, x, y, buf, len);
+	} else {
+		gcv.font = dc.font.xfont->fid;
+		XChangeGC(dpy, dc.gc, GCForeground | GCFont, &gcv);
+		XDrawString(dpy, dc.drawable, dc.gc, x, y, buf, len);
+	}
+}
+
+
+
+void
+drawstatus(void) {
+	int x;
+	unsigned int i;
+
+	dc.x = dc.y = 0;
+	for(i = 0; i < ntags; i++) {
+		dc.w = textw(tags[i]);
+		drawtext(tags[i], ( ((i == 0 && seltag) || (i == 1 && !seltag)) ? dc.sel : dc.norm));
+		dc.x += dc.w + 1;
+	}
+	dc.w = bmw;
+	drawtext("", dc.norm);
+	x = dc.x + dc.w;
+	dc.w = textw(stext);
+	dc.x = sw - dc.w;
+	if(dc.x < x) {
+		dc.x = x;
+		dc.w = sw - x;
+	}
+	drawtext(stext, dc.norm);
+	if((dc.w = dc.x - x) > bh) {
+		dc.x = x;
+		drawtext(sel ? sel->name : NULL, dc.norm);
+	}
+	XCopyArea(dpy, dc.drawable, barwin, dc.gc, 0, 0, sw, bh, 0, 0);
+	XSync(dpy, False);
+}
+
+unsigned long
+getcolor(const char *colstr) {
+	Colormap cmap = DefaultColormap(dpy, screen);
+	XColor color;
+
+	if(!XAllocNamedColor(dpy, cmap, colstr, &color, &color))
+		eprint("error, cannot allocate color '%s'\n", colstr);
+	return color.pixel;
+}
+
+void
+setfont(const char *fontstr) {
+	char *def, **missing;
+	int i, n;
+
+	missing = NULL;
+	if(dc.font.set)
+		XFreeFontSet(dpy, dc.font.set);
+	dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
+	if(missing) {
+		while(n--)
+			fprintf(stderr, "missing fontset: %s\n", missing[n]);
+		XFreeStringList(missing);
+	}
+	if(dc.font.set) {
+		XFontSetExtents *font_extents;
+		XFontStruct **xfonts;
+		char **font_names;
+		dc.font.ascent = dc.font.descent = 0;
+		font_extents = XExtentsOfFontSet(dc.font.set);
+		n = XFontsOfFontSet(dc.font.set, &xfonts, &font_names);
+		for(i = 0, dc.font.ascent = 0, dc.font.descent = 0; i < n; i++) {
+			if(dc.font.ascent < (*xfonts)->ascent)
+				dc.font.ascent = (*xfonts)->ascent;
+			if(dc.font.descent < (*xfonts)->descent)
+				dc.font.descent = (*xfonts)->descent;
+			xfonts++;
+		}
+	} else {
+		if(dc.font.xfont)
+			XFreeFont(dpy, dc.font.xfont);
+		dc.font.xfont = NULL;
+		if(!(dc.font.xfont = XLoadQueryFont(dpy, fontstr)))
+			eprint("error, cannot load font: '%s'\n", fontstr);
+		dc.font.ascent = dc.font.xfont->ascent;
+		dc.font.descent = dc.font.xfont->descent;
+	}
+	dc.font.height = dc.font.ascent + dc.font.descent;
+}
+
+unsigned int
+textw(const char *text) {
+	return textnw(text, strlen(text)) + dc.font.height;
+}
+
+
+
+
+
+
+
+
+
+
+
+/* from client.c */
+/* static */
+
+static void
+detachstack(Client *c) {
+	Client **tc;
+	for(tc=&stack; *tc && *tc != c; tc=&(*tc)->snext);
+	*tc = c->snext;
+}
+
+static void
+grabbuttons(Client *c, Bool focused) {
+	XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
+
+	if(focused) {
+		XGrabButton(dpy, Button1, MODKEY, c->win, False, BUTTONMASK,
+				GrabModeAsync, GrabModeSync, None, None);
+		XGrabButton(dpy, Button1, MODKEY | LockMask, c->win, False, BUTTONMASK,
+				GrabModeAsync, GrabModeSync, None, None);
+		XGrabButton(dpy, Button1, MODKEY | numlockmask, c->win, False, BUTTONMASK,
+				GrabModeAsync, GrabModeSync, None, None);
+		XGrabButton(dpy, Button1, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
+				GrabModeAsync, GrabModeSync, None, None);
+
+		XGrabButton(dpy, Button2, MODKEY, c->win, False, BUTTONMASK,
+				GrabModeAsync, GrabModeSync, None, None);
+		XGrabButton(dpy, Button2, MODKEY | LockMask, c->win, False, BUTTONMASK,
+				GrabModeAsync, GrabModeSync, None, None);
+		XGrabButton(dpy, Button2, MODKEY | numlockmask, c->win, False, BUTTONMASK,
+				GrabModeAsync, GrabModeSync, None, None);
+		XGrabButton(dpy, Button2, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
+				GrabModeAsync, GrabModeSync, None, None);
+
+		XGrabButton(dpy, Button3, MODKEY, c->win, False, BUTTONMASK,
+				GrabModeAsync, GrabModeSync, None, None);
+		XGrabButton(dpy, Button3, MODKEY | LockMask, c->win, False, BUTTONMASK,
+				GrabModeAsync, GrabModeSync, None, None);
+		XGrabButton(dpy, Button3, MODKEY | numlockmask, c->win, False, BUTTONMASK,
+				GrabModeAsync, GrabModeSync, None, None);
+		XGrabButton(dpy, Button3, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
+				GrabModeAsync, GrabModeSync, None, None);
+	} else {
+		XGrabButton(dpy, AnyButton, AnyModifier, c->win, False, BUTTONMASK,
+				GrabModeAsync, GrabModeSync, None, None);
+	}
+}
+
+static void
+setclientstate(Client *c, long state) {
+	long data[] = {state, None};
+	XChangeProperty(dpy, c->win, wmatom[WMState], wmatom[WMState], 32,
+			PropModeReplace, (unsigned char *)data, 2);
+}
+
+static int
+xerrordummy(Display *dsply, XErrorEvent *ee) {
+	return 0;
+}
+
+
+
+void
+configure(Client *c) {
+	XEvent synev;
+
+	synev.type = ConfigureNotify;
+	synev.xconfigure.display = dpy;
+	synev.xconfigure.event = c->win;
+	synev.xconfigure.window = c->win;
+	synev.xconfigure.x = c->x;
+	synev.xconfigure.y = c->y;
+	synev.xconfigure.width = c->w;
+	synev.xconfigure.height = c->h;
+	synev.xconfigure.border_width = c->border;
+	synev.xconfigure.above = None;
+	XSendEvent(dpy, c->win, True, NoEventMask, &synev);
+}
+
+void
+focus(Client *c) {
+	if(c && !isvisible(c))
+		return;
+	if(sel && sel != c) {
+		grabbuttons(sel, False);
+		XSetWindowBorder(dpy, sel->win, dc.norm[ColBorder]);
+	}
+	if(c) {
+		detachstack(c);
+		c->snext = stack;
+		stack = c;
+		grabbuttons(c, True);
+	}
+	sel = c;
+	drawstatus();
+	if(!selscreen)
+		return;
+	if(c) {
+		XSetWindowBorder(dpy, c->win, dc.sel[ColBorder]);
+		XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
+	} else {
+		XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
+	}
+}
+
+Client *
+getclient(Window w) {
+	Client *c;
+
+	for(c = clients; c; c = c->next) {
+		if(c->win == w) {
+			return c;
+		}
+	}
+	return NULL;
+}
+
+Bool
+isprotodel(Client *c) {
+	int i, n;
+	Atom *protocols;
+	Bool ret = False;
+
+	if(XGetWMProtocols(dpy, c->win, &protocols, &n)) {
+		for(i = 0; !ret && i < n; i++)
+			if(protocols[i] == wmatom[WMDelete])
+				ret = True;
+		XFree(protocols);
+	}
+	return ret;
+}
+
+void
+killclient() {
+	if(!sel)
+		return;
+	if(isprotodel(sel))
+		sendevent(sel->win, wmatom[WMProtocols], wmatom[WMDelete]);
+	else
+		XKillClient(dpy, sel->win);
+}
+
+void
+manage(Window w, XWindowAttributes *wa) {
+	Client *c;
+	Window trans;
+
+	c = emallocz(sizeof(Client));
+	c->tag = True;
+	c->win = w;
+	c->x = wa->x;
+	c->y = wa->y;
+	c->w = wa->width;
+	c->h = wa->height;
+	if(c->w == sw && c->h == sh) {
+		c->border = 0;
+		c->x = sx;
+		c->y = sy;
+	} else {
+		c->border = BORDERPX;
+		if(c->x + c->w + 2 * c->border > wax + waw)
+			c->x = wax + waw - c->w - 2 * c->border;
+		if(c->y + c->h + 2 * c->border > way + wah)
+			c->y = way + wah - c->h - 2 * c->border;
+		if(c->x < wax)
+			c->x = wax;
+		if(c->y < way)
+			c->y = way;
+	}
+	updatesizehints(c);
+	XSelectInput(dpy, c->win,
+		StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
+	XGetTransientForHint(dpy, c->win, &trans);
+	grabbuttons(c, False);
+	XSetWindowBorder(dpy, c->win, dc.norm[ColBorder]);
+	updatetitle(c);
+	settags(c, getclient(trans));
+	if(!c->isfloat)
+		c->isfloat = trans || c->isfixed;
+	if(clients)
+		clients->prev = c;
+	c->next = clients;
+	c->snext = stack;
+	stack = clients = c;
+	XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
+	XMapWindow(dpy, c->win);
+	setclientstate(c, NormalState);
+	if(isvisible(c))
+		focus(c);
+	arrange();
+}
+
+void
+resize(Client *c, Bool sizehints) {
+	float actual, dx, dy, max, min;
+	XWindowChanges wc;
+
+	if(c->w <= 0 || c->h <= 0)
+		return;
+	if(sizehints) {
+		if(c->minw && c->w < c->minw)
+			c->w = c->minw;
+		if(c->minh && c->h < c->minh)
+			c->h = c->minh;
+		if(c->maxw && c->w > c->maxw)
+			c->w = c->maxw;
+		if(c->maxh && c->h > c->maxh)
+			c->h = c->maxh;
+		/* inspired by algorithm from fluxbox */
+		if(c->minay > 0 && c->maxay && (c->h - c->baseh) > 0) {
+			dx = (float)(c->w - c->basew);
+			dy = (float)(c->h - c->baseh);
+			min = (float)(c->minax) / (float)(c->minay);
+			max = (float)(c->maxax) / (float)(c->maxay);
+			actual = dx / dy;
+			if(max > 0 && min > 0 && actual > 0) {
+				if(actual < min) {
+					dy = (dx * min + dy) / (min * min + 1);
+					dx = dy * min;
+					c->w = (int)dx + c->basew;
+					c->h = (int)dy + c->baseh;
+				}
+				else if(actual > max) {
+					dy = (dx * min + dy) / (max * max + 1);
+					dx = dy * min;
+					c->w = (int)dx + c->basew;
+					c->h = (int)dy + c->baseh;
+				}
+			}
+		}
+		if(c->incw)
+			c->w -= (c->w - c->basew) % c->incw;
+		if(c->inch)
+			c->h -= (c->h - c->baseh) % c->inch;
+	}
+	if(c->w == sw && c->h == sh)
+		c->border = 0;
+	else
+		c->border = BORDERPX;
+	/* offscreen appearance fixes */
+	if(c->x > sw)
+		c->x = sw - c->w - 2 * c->border;
+	if(c->y > sh)
+		c->y = sh - c->h - 2 * c->border;
+	if(c->x + c->w + 2 * c->border < sx)
+		c->x = sx;
+	if(c->y + c->h + 2 * c->border < sy)
+		c->y = sy;
+	wc.x = c->x;
+	wc.y = c->y;
+	wc.width = c->w;
+	wc.height = c->h;
+	wc.border_width = c->border;
+	XConfigureWindow(dpy, c->win, CWX | CWY | CWWidth | CWHeight | CWBorderWidth, &wc);
+	configure(c);
+	XSync(dpy, False);
+}
+
+void
+updatesizehints(Client *c) {
+	long msize;
+	XSizeHints size;
+
+	if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
+		size.flags = PSize;
+	c->flags = size.flags;
+	if(c->flags & PBaseSize) {
+		c->basew = size.base_width;
+		c->baseh = size.base_height;
+	} else {
+		c->basew = c->baseh = 0;
+	}
+	if(c->flags & PResizeInc) {
+		c->incw = size.width_inc;
+		c->inch = size.height_inc;
+	} else {
+		c->incw = c->inch = 0;
+	}
+	if(c->flags & PMaxSize) {
+		c->maxw = size.max_width;
+		c->maxh = size.max_height;
+	} else {
+		c->maxw = c->maxh = 0;
+	}
+	if(c->flags & PMinSize) {
+		c->minw = size.min_width;
+		c->minh = size.min_height;
+	} else {
+		c->minw = c->minh = 0;
+	}
+	if(c->flags & PAspect) {
+		c->minax = size.min_aspect.x;
+		c->minay = size.min_aspect.y;
+		c->maxax = size.max_aspect.x;
+		c->maxay = size.max_aspect.y;
+	} else {
+		c->minax = c->minay = c->maxax = c->maxay = 0;
+	}
+	c->isfixed = (c->maxw && c->minw && c->maxh && c->minh &&
+				c->maxw == c->minw && c->maxh == c->minh);
+}
+
+void
+updatetitle(Client *c) {
+	char **list = NULL;
+	int n;
+	XTextProperty name;
+
+	name.nitems = 0;
+	c->name[0] = 0;
+	XGetTextProperty(dpy, c->win, &name, netatom[NetWMName]);
+	if(!name.nitems)
+		XGetWMName(dpy, c->win, &name);
+	if(!name.nitems)
+		return;
+	if(name.encoding == XA_STRING)
+		strncpy(c->name, (char *)name.value, sizeof c->name);
+	else {
+		if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success && n > 0 && *list) {
+			strncpy(c->name, *list, sizeof c->name);
+			XFreeStringList(list);
+		}
+	}
+	XFree(name.value);
+}
+
+void
+unmanage(Client *c) {
+	Client *nc;
+
+	/* The server grab construct avoids race conditions. */
+	XGrabServer(dpy);
+	XSetErrorHandler(xerrordummy);
+	detach(c);
+	detachstack(c);
+	if(sel == c) {
+		for(nc = stack; nc && !isvisible(nc); nc = nc->snext);
+		focus(nc);
+	}
+	XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
+	setclientstate(c, WithdrawnState);
+	free(c);
+	XSync(dpy, False);
+	XSetErrorHandler(xerror);
+	XUngrabServer(dpy);
+	arrange();
+}
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+/* static */
+
+
+static void
+cleanup(void) {
+	close(STDIN_FILENO);
+	while(stack) {
+		resize(stack, True);
+		unmanage(stack);
+	}
+	if(dc.font.set)
+		XFreeFontSet(dpy, dc.font.set);
+	else
+		XFreeFont(dpy, dc.font.xfont);
+	XUngrabKey(dpy, AnyKey, AnyModifier, root);
+	XFreePixmap(dpy, dc.drawable);
+	XFreeGC(dpy, dc.gc);
+	XDestroyWindow(dpy, barwin);
+	XFreeCursor(dpy, cursor[CurNormal]);
+	XFreeCursor(dpy, cursor[CurResize]);
+	XFreeCursor(dpy, cursor[CurMove]);
+	XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
+	XSync(dpy, False);
+}
+
+static void
+scan(void) {
+	unsigned int i, num;
+	Window *wins, d1, d2;
+	XWindowAttributes wa;
+
+	wins = NULL;
+	if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
+		for(i = 0; i < num; i++) {
+			if(!XGetWindowAttributes(dpy, wins[i], &wa))
+				continue;
+			if(wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
+				continue;
+			if(wa.map_state == IsViewable)
+				manage(wins[i], &wa);
+		}
+	}
+	if(wins)
+		XFree(wins);
+}
+
+static void
+setup(void) {
+	int i, j;
+	unsigned int mask;
+	Window w;
+	XModifierKeymap *modmap;
+	XSetWindowAttributes wa;
+
+	/* init atoms */
+	wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
+	wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
+	wmatom[WMState] = XInternAtom(dpy, "WM_STATE", False);
+	netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
+	netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
+	XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
+			PropModeReplace, (unsigned char *) netatom, NetLast);
+	/* init cursors */
+	cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
+	cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
+	cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
+	/* init modifier map */
+	numlockmask = 0;
+	modmap = XGetModifierMapping(dpy);
+	for (i = 0; i < 8; i++) {
+		for (j = 0; j < modmap->max_keypermod; j++) {
+			if(modmap->modifiermap[i * modmap->max_keypermod + j] == XKeysymToKeycode(dpy, XK_Num_Lock))
+				numlockmask = (1 << i);
+		}
+	}
+	XFreeModifiermap(modmap);
+	/* select for events */
+	wa.event_mask = SubstructureRedirectMask | SubstructureNotifyMask
+		| EnterWindowMask | LeaveWindowMask;
+	wa.cursor = cursor[CurNormal];
+	XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);
+	grabkeys();
+	initrregs();
+	ntags = 2;
+	seltag = True;
+	/* style */
+	dc.norm[ColBorder] = getcolor(NORMBORDERCOLOR);
+	dc.norm[ColBG] = getcolor(NORMBGCOLOR);
+	dc.norm[ColFG] = getcolor(NORMFGCOLOR);
+	dc.sel[ColBorder] = getcolor(SELBORDERCOLOR);
+	dc.sel[ColBG] = getcolor(SELBGCOLOR);
+	dc.sel[ColFG] = getcolor(SELFGCOLOR);
+	setfont(FONT);
+	/* geometry */
+	sx = sy = 0;
+	sw = DisplayWidth(dpy, screen);
+	sh = DisplayHeight(dpy, screen);
+	nmaster = NMASTER;
+	bmw = 1;
+	/* bar */
+	dc.h = bh = dc.font.height + 2;
+	wa.override_redirect = 1;
+	wa.background_pixmap = ParentRelative;
+	wa.event_mask = ButtonPressMask | ExposureMask;
+	barwin = XCreateWindow(dpy, root, sx, sy, sw, bh, 0,
+			DefaultDepth(dpy, screen), CopyFromParent, DefaultVisual(dpy, screen),
+			CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
+	XDefineCursor(dpy, barwin, cursor[CurNormal]);
+	XMapRaised(dpy, barwin);
+	strcpy(stext, "dwm-"VERSION);
+	/* windowarea */
+	wax = sx;
+	way = sy + bh;
+	wah = sh - bh;
+	waw = sw;
+	/* pixmap for everything */
+	dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
+	dc.gc = XCreateGC(dpy, root, 0, 0);
+	XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
+	/* multihead support */
+	selscreen = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask);
+}
+
+/*
+ * Startup Error handler to check if another window manager
+ * is already running.
+ */
+static int
+xerrorstart(Display *dsply, XErrorEvent *ee) {
+	otherwm = True;
+	return -1;
+}
+
+
+
+void
+sendevent(Window w, Atom a, long value) {
+	XEvent e;
+
+	e.type = ClientMessage;
+	e.xclient.window = w;
+	e.xclient.message_type = a;
+	e.xclient.format = 32;
+	e.xclient.data.l[0] = value;
+	e.xclient.data.l[1] = CurrentTime;
+	XSendEvent(dpy, w, False, NoEventMask, &e);
+	XSync(dpy, False);
+}
+
+void
+quit() {
+	readin = running = False;
+}
+
+/* There's no way to check accesses to destroyed windows, thus those cases are
+ * ignored (especially on UnmapNotify's).  Other types of errors call Xlibs
+ * default error handler, which may call exit.
+ */
+int
+xerror(Display *dpy, XErrorEvent *ee) {
+	if(ee->error_code == BadWindow
+	|| (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
+	|| (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
+	|| (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
+	|| (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
+	|| (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
+	|| (ee->request_code == X_GrabKey && ee->error_code == BadAccess)
+	|| (ee->request_code == X_CopyArea && ee->error_code == BadDrawable))
+		return 0;
+	fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
+		ee->request_code, ee->error_code);
+	return xerrorxlib(dpy, ee); /* may call exit */
+}
+
+int
+main(int argc, char *argv[]) {
+	char *p;
+	int r, xfd;
+	fd_set rd;
+
+	if(argc == 2 && !strncmp("-v", argv[1], 3)) {
+		fputs("dwm-"VERSION", (C)opyright MMVI-MMVII Anselm R. Garbe\n", stdout);
+		exit(EXIT_SUCCESS);
+	} else if(argc != 1) {
+		eprint("usage: dwm [-v]\n");
+	}
+	setlocale(LC_CTYPE, "");
+	dpy = XOpenDisplay(0);
+	if(!dpy) {
+		eprint("dwm: cannot open display\n");
+	}
+	xfd = ConnectionNumber(dpy);
+	screen = DefaultScreen(dpy);
+	root = RootWindow(dpy, screen);
+	otherwm = False;
+	XSetErrorHandler(xerrorstart);
+	/* this causes an error if some other window manager is running */
+	XSelectInput(dpy, root, SubstructureRedirectMask);
+	XSync(dpy, False);
+	if(otherwm) {
+		eprint("dwm: another window manager is already running\n");
+	}
+
+	XSync(dpy, False);
+	XSetErrorHandler(NULL);
+	xerrorxlib = XSetErrorHandler(xerror);
+	XSync(dpy, False);
+	setup();
+	drawstatus();
+	scan();
+
+	/* main event loop, also reads status text from stdin */
+	XSync(dpy, False);
+	procevent();
+	readin = True;
+	while(running) {
+		FD_ZERO(&rd);
+		if(readin)
+			FD_SET(STDIN_FILENO, &rd);
+		FD_SET(xfd, &rd);
+		if(select(xfd + 1, &rd, NULL, NULL, NULL) == -1) {
+			if(errno == EINTR)
+				continue;
+			eprint("select failed\n");
+		}
+		if(FD_ISSET(STDIN_FILENO, &rd)) {
+			switch(r = read(STDIN_FILENO, stext, sizeof stext - 1)) {
+			case -1:
+				strncpy(stext, strerror(errno), sizeof stext - 1);
+				stext[sizeof stext - 1] = '\0';
+				readin = False;
+				break;
+			case 0:
+				strncpy(stext, "EOF", 4);
+				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);
+			}
+			drawstatus();
+		}
+		if(FD_ISSET(xfd, &rd))
+			procevent();
+	}
+	cleanup();
+	XCloseDisplay(dpy);
+	return 0;
+}
diff -r bc512840e5a5 -r 45f23169563e config.mk
--- a/config.mk	Fri May 30 21:57:51 2008 +0200
+++ b/config.mk	Fri May 30 22:18:18 2008 +0200
@@ -1,5 +1,5 @@
-# dwm version
-VERSION = 4.4.1
+# aewl version
+VERSION = 0.1
 
 # Customize below to fit your system
 
@@ -15,7 +15,8 @@
 LIBS = -L/usr/lib -lc -L${X11LIB} -lX11
 
 # flags
-CFLAGS = -Os ${INCS} -DVERSION=\"${VERSION}\" -W -Wall -pedantic
+DEBUG = -Wall -Wpointer-arith -Wstrict-prototypes -O2 -W -pedantic
+CFLAGS =  ${INCS} -DVERSION=\"${VERSION}\" ${DEBUG}
 LDFLAGS = ${LIBS}
 #CFLAGS = -g -Wall -O2 ${INCS} -DVERSION=\"${VERSION}\"
 #LDFLAGS = -g ${LIBS}
diff -r bc512840e5a5 -r 45f23169563e dwm.1
--- a/dwm.1	Fri May 30 21:57:51 2008 +0200
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,149 +0,0 @@
-.TH DWM 1 dwm-VERSION
-.SH NAME
-dwm \- dynamic window manager
-.SH SYNOPSIS
-.B dwm
-.RB [ \-v ]
-.SH DESCRIPTION
-dwm is a dynamic window manager for X. It manages windows in tiling and
-floating modes. Either mode can be applied dynamically, optimizing the
-environment for the application in use and the task performed.
-.P
-In tiling mode windows are managed in a master and stacking area. The master
-area contains the windows which currently need most attention, whereas the
-stacking area contains all other windows. In floating mode windows can be
-resized and moved freely. Dialog windows are always managed floating,
-regardless of the mode applied.
-.P
-Windows are grouped by tags. Each window can be tagged with one or multiple
-tags. Selecting certain tags displays all windows with these tags.
-.P
-dwm contains a small status bar which displays all available tags, the mode,
-the title of the focused window, and the text read from standard input. The
-selected tags are indicated with a different color. The tags of the focused
-window are indicated with a filled square in the top left corner.  The tags
-which are applied to one or more windows are indicated with an empty square in
-the top left corner.
-.P
-dwm draws a small border around windows to indicate the focus state.
-.SH OPTIONS
-.TP
-.B \-v
-prints version information to standard output, then exits.
-.SH USAGE
-.SS Status bar
-.TP
-.B Standard input
-is read and displayed in the status text area.
-.TP
-.B Button1
-click on a tag label to display all windows with that tag, click on the mode
-label toggles between tiling and floating mode.
-.TP
-.B Button3
-click on a tag label adds/removes all windows with that tag to/from the view.
-.TP
-.B Button4
-click on the mode label increases the number of windows in the master area (tiling mode only).
-.TP
-.B Button5
-click on the mode label decreases the number of windows in the master area (tiling mode only).
-.TP
-.B Mod1-Button1
-click on a tag label applies that tag to the focused window.
-.TP
-.B Mod1-Button3
-click on a tag label adds/removes that tag to/from the focused window.
-.SS Keyboard commands
-.TP
-.B Mod1-Shift-Return
-Start
-.BR xterm (1).
-.TP
-.B Mod1-Tab
-Focus next window.
-.TP
-.B Mod1-Shift-Tab
-Focus previous window.
-.TP
-.B Mod1-Return
-Zooms/cycles current window to/from master area (tiling mode), toggles maximization current window (floating mode).
-.TP
-.B Mod1-g
-Grow master area (tiling mode only).
-.TP
-.B Mod1-s
-Shrink master area (tiling mode only).
-.TP
-.B Mod1-i
-Increase the number of windows in the master area (tiling mode only).
-.TP
-.B Mod1-d
-Decrease the number of windows in the master area (tiling mode only).
-.TP
-.B Mod1-Shift-[1..n]
-Apply
-.RB nth
-tag to current window.
-.TP
-.B Mod1-Shift-0
-Apply all tags to current window.
-.TP
-.B Mod1-Control-Shift-[1..n]
-Add/remove
-.B nth
-tag to/from current window.
-.TP
-.B Mod1-Shift-c
-Close focused window.
-.TP
-.B Mod1-space
-Toggle between tiling and floating mode (affects all windows).
-.TP
-.B Mod1-Shift-space
-Toggle focused window between floating and non-floating state (tiling mode only).
-.TP
-.B Mod1-[1..n]
-View all windows with
-.BR 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.
-.TP
-.B Mod1-Shift-q
-Quit dwm.
-.SS Mouse commands
-.TP
-.B Mod1-Button1
-Move current window while dragging (floating mode only).
-.TP
-.B Mod1-Button2
-Zoom current window to the master area (tiling mode only).
-.TP
-.B Mod1-Button3
-Resize current window while dragging (floating mode only).
-.SH CUSTOMIZATION
-dwm is customized by creating a custom config.h and (re)compiling the source
-code. This keeps it fast, secure and simple.
-.SH SEE ALSO
-.BR dmenu (1)
-.SH BUGS
-The status bar may display
-.BR "EOF"
-when dwm has been started by an X session manager like
-.BR xdm (1),
-because those close standard output before executing dwm.
-.P
-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 .
diff -r bc512840e5a5 -r 45f23169563e dwm.c
--- a/dwm.c	Fri May 30 21:57:51 2008 +0200
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,1782 +0,0 @@
-/* (C)opyright MMVI-MMVII Anselm R. Garbe <garbeam at gmail dot com>
- * See LICENSE file for license details.
- *
- * dynamic window manager is designed like any other X client as well. It is
- * driven through handling X events. In contrast to other X clients, a window
- * manager selects for SubstructureRedirectMask on the root window, to receive
- * events about window (dis-)appearance.  Only one X connection at a time is
- * allowed to select for this event mask.
- *
- * Calls to fetch an X event from the event queue are blocking.  Due reading
- * status text from standard input, a select()-driven main loop has been
- * implemented which selects for reads on the X connection and STDIN_FILENO to
- * handle all data smoothly. The event handlers of dwm are organized in an
- * array which is accessed whenever a new event has been fetched. This allows
- * event dispatching in O(1) time.
- *
- * Each child of the root window is called a client, except windows which have
- * set the override_redirect flag.  Clients are organized in a 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.
- *
- * Keys and tagging rules are organized as arrays and defined in the config.h
- * file. These arrays are kept static in event.o and tag.o respectively,
- * because no other part of dwm needs access to them.  The current mode is
- * represented by the arrange() function pointer, which wether points to
- * dofloat() or dotile().
- *
- * To understand everything else, start reading main.c:main().
- */
-
-#include "config.h"
-#include <errno.h>
-#include <locale.h>
-#include <regex.h>
-#include <stdio.h>
-#include <stdarg.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include <sys/select.h>
-#include <sys/types.h>
-#include <sys/wait.h>
-#include <X11/cursorfont.h>
-#include <X11/keysym.h>
-#include <X11/Xatom.h>
-#include <X11/Xlib.h>
-#include <X11/Xproto.h>
-#include <X11/Xutil.h>
-
-/* mask shorthands, used in event.c and client.c */
-#define BUTTONMASK		(ButtonPressMask | ButtonReleaseMask)
-
-enum { NetSupported, NetWMName, NetLast };		/* EWMH atoms */
-enum { WMProtocols, WMDelete, WMState, WMLast };	/* default atoms */
-enum { CurNormal, CurResize, CurMove, CurLast };	/* cursor */
-enum { ColBorder, ColFG, ColBG, ColLast };		/* color */
-
-typedef struct {
-	int ascent;
-	int descent;
-	int height;
-	XFontSet set;
-	XFontStruct *xfont;
-} Fnt;
-
-typedef struct {
-	int x, y, w, h;
-	unsigned long norm[ColLast];
-	unsigned long sel[ColLast];
-	Drawable drawable;
-	Fnt font;
-	GC gc;
-} DC; /* draw context */
-
-typedef struct Client Client;
-struct Client {
-	char name[256];
-	int x, y, w, h;
-	int rx, ry, rw, rh; /* revert geometry */
-	int basew, baseh, incw, inch, maxw, maxh, minw, minh;
-	int minax, minay, maxax, maxay;
-	long flags;
-	unsigned int border;
-	Bool isfixed, isfloat, ismax;
-	Bool tag;
-	Client *next;
-	Client *prev;
-	Client *snext;
-	Window win;
-};
-
-typedef struct {
-	const char *clpattern;
-	int tag;
-	Bool isfloat;
-} Rule;
-
-typedef struct {
-	regex_t *clregex;
-} RReg;
-
-
-typedef struct {
-	unsigned long mod;
-	KeySym keysym;
-	void (*func)(const char* cmd);
-	const char* cmd;
-} Key;
-
-
-#define CLEANMASK(mask) (mask & ~(numlockmask | LockMask))
-#define MOUSEMASK		(BUTTONMASK | PointerMotionMask)
-
-
-
-const char *tags[];			/* all tags */
-char stext[256];				/* status text */
-int bh, bmw;				/* bar height, bar mode label width */
-int screen, sx, sy, sw, sh;		/* screen geometry */
-int wax, way, wah, waw;			/* windowarea geometry */
-unsigned int nmaster;		/* number of master clients */
-unsigned int ntags, numlockmask;		/* number of tags, dynamic lock mask */
-void (*handler[LASTEvent])(XEvent *);	/* event handler */
-void (*arrange)(void);			/* arrange function, indicates mode  */
-Atom wmatom[WMLast], netatom[NetLast];
-Bool running, selscreen, seltag;	/* seltag is array of Bool */
-Client *clients, *sel, *stack;		/* global client list and stack */
-Cursor cursor[CurLast];
-DC dc;					/* global draw context */
-Display *dpy;
-Window root, barwin;
-
-Bool running = True;
-Bool selscreen = True;
-Client *clients = NULL;
-Client *sel = NULL;
-Client *stack = NULL;
-DC dc = {0};
-
-static int (*xerrorxlib)(Display *, XErrorEvent *);
-static Bool otherwm, readin;
-static RReg *rreg = NULL;
-static unsigned int len = 0;
-
-
-TAGS
-RULES
-
-
-/* client.c */
-void configure(Client *c);		/* send synthetic configure event */
-void focus(Client *c);			/* focus c, c may be NULL */
-Client *getclient(Window w);		/* return client of w */
-Bool isprotodel(Client *c);		/* returns True if c->win supports wmatom[WMDelete] */
-void manage(Window w, XWindowAttributes *wa);	/* manage new client */
-void resize(Client *c, Bool sizehints);	/* resize c*/
-void updatesizehints(Client *c);		/* update the size hint variables of c */
-void updatetitle(Client *c);		/* update the name of c */
-void unmanage(Client *c);		/* destroy c */
-
-/* draw.c */
-void drawstatus(void);			/* draw the bar */
-unsigned long getcolor(const char *colstr);	/* return color of colstr */
-void setfont(const char *fontstr);	/* set the font for DC */
-unsigned int textw(const char *text);	/* return the width of text in px*/
-
-/* event.c */
-void grabkeys(void);			/* grab all keys defined in config.h */
-void procevent(void);			/* process pending X events */
-
-/* main.c */
-void sendevent(Window w, Atom a, long value);	/* send synthetic event to w */
-int xerror(Display *dsply, XErrorEvent *ee);	/* dwm's X error handler */
-
-/* tag.c */
-void initrregs(void);			/* initialize regexps of rules defined in config.h */
-Client *getnext(Client *c);		/* returns next visible client */
-void settags(Client *c, Client *trans);	/* sets tags of c */
-
-/* util.c */
-void *emallocz(unsigned int size);	/* allocates zero-initialized memory, exits on error */
-void eprint(const char *errstr, ...);	/* prints errstr and exits with 1 */
-
-/* view.c */
-void detach(Client *c);			/* detaches c from global client list */
-void dofloat(void);			/* arranges all windows floating */
-void dotile(void);			/* arranges all windows tiled */
-void domax(void);            /* arranges all windows fullscreen */
-Bool isvisible(Client *c);		/* returns True if client is visible */
-void restack(void);			/* restores z layers of all clients */
-
-
-void toggleview();			/* toggle the viewed tag */
-void focusnext();		/* focuses next visible client  */
-void zoom();			/* zooms the focused client to master area */
-void killclient();		/* kill c nicely */
-void quit();			/* quit dwm nicely */
-void togglemode();		/* toggles global arrange function (dotile/dofloat) */
-void togglefloat();		/* toggles focusesd client between floating/non-floating state */
-void incnmaster();		/* increments nmaster */
-void decnmaster();		/* decrements nmaster */
-void toggletag();		/* toggles c tag */
-void spawn(const char* cmd);			/* forks a new subprocess with cmd */
-
-
-
-
-
-
-
-
-
-
-/* from view.c */
-/* static */
-
-static Client *
-nexttiled(Client *c) {
-	for(c = getnext(c); c && c->isfloat; c = getnext(c->next));
-	return c;
-}
-
-static void
-togglemax(Client *c) {
-	XEvent ev;
-		
-	if(c->isfixed)
-		return;
-
-	if((c->ismax = !c->ismax)) {
-		c->rx = c->x; c->x = wax;
-		c->ry = c->y; c->y = way;
-		c->rw = c->w; c->w = waw - 2 * BORDERPX;
-		c->rh = c->h; c->h = wah - 2 * BORDERPX;
-	}
-	else {
-		c->x = c->rx;
-		c->y = c->ry;
-		c->w = c->rw;
-		c->h = c->rh;
-	}
-	resize(c, True);
-	while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
-}
-
-
-
-void (*arrange)(void) = DEFMODE;
-
-void
-detach(Client *c) {
-	if(c->prev)
-		c->prev->next = c->next;
-	if(c->next)
-		c->next->prev = c->prev;
-	if(c == clients)
-		clients = c->next;
-	c->next = c->prev = NULL;
-}
-
-void
-dofloat(void) {
-	Client *c;
-
-	for(c = clients; c; c = c->next) {
-		if(isvisible(c)) {
-			resize(c, True);
-		}
-		else
-			XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
-	}
-	if(!sel || !isvisible(sel)) {
-		for(c = stack; c && !isvisible(c); c = c->snext);
-		focus(c);
-	}
-	restack();
-}
-
-void
-dotile(void) {
-	unsigned int i, n, mw, mh, tw, th;
-	Client *c;
-
-	for(n = 0, c = nexttiled(clients); c; c = nexttiled(c->next))
-		n++;
-	/* window geoms */
-	mh = (n > nmaster) ? wah / nmaster : wah / (n > 0 ? n : 1);
-	mw = (n > nmaster) ? waw / 2 : waw;
-	th = (n > nmaster) ? wah / (n - nmaster) : 0;
-	tw = waw - mw;
-
-	for(i = 0, c = clients; c; c = c->next)
-		if(isvisible(c)) {
-			if(c->isfloat) {
-				resize(c, True);
-				continue;
-			}
-			c->ismax = False;
-			c->x = wax;
-			c->y = way;
-			if(i < nmaster) {
-				c->y += i * mh;
-				c->w = mw - 2 * BORDERPX;
-				c->h = mh - 2 * BORDERPX;
-			}
-			else {  /* tile window */
-				c->x += mw;
-				c->w = tw - 2 * BORDERPX;
-				if(th > 2 * BORDERPX) {
-					c->y += (i - nmaster) * th;
-					c->h = th - 2 * BORDERPX;
-				}
-				else /* fallback if th <= 2 * BORDERPX */
-					c->h = wah - 2 * BORDERPX;
-			}
-			resize(c, False);
-			i++;
-		}
-		else
-			XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
-	if(!sel || !isvisible(sel)) {
-		for(c = stack; c && !isvisible(c); c = c->snext);
-		focus(c);
-	}
-	restack();
-}
-
-/* begin code by mitch */
-void
-arrangemax(Client *c) {
-  if(c == sel) {
-    c->ismax = True;
-    c->x = sx;
-    c->y = bh;
-    c->w = sw - 2 * BORDERPX;
-    c->h = sh - bh - 2 * BORDERPX;
-    XRaiseWindow(dpy, c->win);
-  } else {
-    c->ismax = False;
-    XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
-    XLowerWindow(dpy, c->win);
-  }
-}
-
-void
-domax(void) {
-  Client *c;
-
-  for(c = clients; c; c = c->next) {
-    if(isvisible(c)) {
-      if(c->isfloat) {
-        resize(c, True);
-        continue;
-      }
-      arrangemax(c);
-      resize(c, False);
-    } else {
-      XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
-    }
-
-  }
-  if(!sel || !isvisible(sel)) {
-    for(c = stack; c && !isvisible(c); c = c->snext);
-    focus(c);
-  }
-  restack();
-}
-/* end code by mitch */
-
-void
-focusnext() {
-	Client *c;
-
-	if(!sel)
-		return;
-	if(!(c = getnext(sel->next)))
-		c = getnext(clients);
-	if(c) {
-		focus(c);
-		restack();
-	}
-}
-
-void
-incnmaster() {
-	if((arrange == dofloat) || (wah / (nmaster + 1) <= 2 * BORDERPX))
-		return;
-	nmaster++;
-	if(sel)
-		arrange();
-	else
-		drawstatus();
-}
-
-void
-decnmaster() {
-	if((arrange == dofloat) || (nmaster <= 1))
-		return;
-	nmaster--;
-	if(sel)
-		arrange();
-	else
-		drawstatus();
-}
-
-Bool
-isvisible(Client *c) {
-	if((c->tag && seltag) || (!c->tag && !seltag)) {
-		return True;
-	}
-	return False;
-}
-
-void
-restack(void) {
-	Client *c;
-	XEvent ev;
-
-	drawstatus();
-	if(!sel)
-		return;
-	if(sel->isfloat || arrange == dofloat)
-		XRaiseWindow(dpy, sel->win);
-
-  /* begin code by mitch */
-  if(arrange == domax) {
-    for(c = nexttiled(clients); c; c = nexttiled(c->next)) {
-      arrangemax(c);
-      resize(c, False);
-    }
-
-  } else if (arrange == dotile) {
-  /* end code by mitch */
-
-		if(!sel->isfloat)
-			XLowerWindow(dpy, sel->win);
-		for(c = nexttiled(clients); c; c = nexttiled(c->next)) {
-			if(c == sel)
-				continue;
-			XLowerWindow(dpy, c->win);
-		}
-	}
-	XSync(dpy, False);
-	while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
-}
-
-void
-togglefloat() {
-	if (!sel || arrange == dofloat)
-		return;
-	sel->isfloat = !sel->isfloat;
-	arrange();
-}
-
-void
-togglemode() {
-  /* only toggle between tile and max - float is just available through togglefloat */
-  arrange = (arrange == dotile) ? domax : dotile;
-	if(sel)
-		arrange();
-	else
-		drawstatus();
-}
-
-void
-toggleview() {
-	seltag = !seltag;
-	arrange();
-}
-
-void
-zoom() {
-	unsigned int n;
-	Client *c;
-
-	if(!sel)
-		return;
-	if(sel->isfloat || (arrange == dofloat)) {
-		togglemax(sel);
-		return;
-	}
-	for(n = 0, c = nexttiled(clients); c; c = nexttiled(c->next))
-		n++;
-
-	if((c = sel) == nexttiled(clients))
-		if(!(c = nexttiled(c->next)))
-			return;
-	detach(c);
-	if(clients)
-		clients->prev = c;
-	c->next = clients;
-	clients = c;
-	focus(c);
-	arrange();
-}
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-/* from util.c */
-
-
-void *
-emallocz(unsigned int size) {
-	void *res = calloc(1, size);
-
-	if(!res)
-		eprint("fatal: could not malloc() %u bytes\n", size);
-	return res;
-}
-
-void
-eprint(const char *errstr, ...) {
-	va_list ap;
-
-	va_start(ap, errstr);
-	vfprintf(stderr, errstr, ap);
-	va_end(ap);
-	exit(EXIT_FAILURE);
-}
-
-void
-spawn(const char* cmd) {
-	static char *shell = NULL;
-
-	if(!shell && !(shell = getenv("SHELL")))
-		shell = "/bin/sh";
-	if(!cmd)
-		return;
-	/* The double-fork construct avoids zombie processes and keeps the code
-	 * clean from stupid signal handlers. */
-	if(fork() == 0) {
-		if(fork() == 0) {
-			if(dpy)
-				close(ConnectionNumber(dpy));
-			setsid();
-			execl(shell, shell, "-c", cmd, (char *)NULL);
-			fprintf(stderr, "dwm: execl '%s -c %s'", shell, cmd);
-			perror(" failed");
-		}
-		exit(0);
-	}
-	wait(0);
-}
-
-
-
-
-
-
-
-
-
-
-
-
-
-/* from tag.c */
-
-/* static */
-
-Client *
-getnext(Client *c) {
-	for(; c && !isvisible(c); c = c->next);
-	return c;
-}
-
-void
-initrregs(void) {
-	unsigned int i;
-	regex_t *reg;
-
-	if(rreg)
-		return;
-	len = sizeof rule / sizeof rule[0];
-	rreg = emallocz(len * sizeof(RReg));
-	for(i = 0; i < len; i++) {
-		if(rule[i].clpattern) {
-			reg = emallocz(sizeof(regex_t));
-			if(regcomp(reg, rule[i].clpattern, REG_EXTENDED))
-				free(reg);
-			else
-				rreg[i].clregex = reg;
-		}
-	}
-}
-
-void
-settags(Client *c, Client *trans) {
-	char prop[512];
-	unsigned int i;
-	regmatch_t tmp;
-	Bool matched = trans != NULL;
-	XClassHint ch = { 0 };
-
-	if(matched) {
-		c->tag = trans->tag;
-	} else {
-		XGetClassHint(dpy, c->win, &ch);
-		snprintf(prop, sizeof prop, "%s:%s:%s",
-				ch.res_class ? ch.res_class : "",
-				ch.res_name ? ch.res_name : "", c->name);
-		for(i = 0; i < len; i++)
-			if(rreg[i].clregex && !regexec(rreg[i].clregex, prop, 1, &tmp, 0)) {
-				c->isfloat = rule[i].isfloat;
-				if (rule[i].tag < 0) {
-					c->tag = seltag;
-				} else if (rule[i].tag == 0) {
-					c->tag = True;
-				} else {
-					c->tag = False;
-				}
-				matched = True;
-        break;  /* perform only the first rule matching */
-			}
-		if(ch.res_class)
-			XFree(ch.res_class);
-		if(ch.res_name)
-			XFree(ch.res_name);
-	}
-	if(!matched) {
-		c->tag = seltag;
-	}
-}
-
-void
-toggletag() {
-	if(!sel)
-		return;
-	sel->tag = !sel->tag;
-	toggleview();
-}
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-/* from event.c */
-/* static */
-
-KEYS
-
-
-
-static void
-movemouse(Client *c) {
-	int x1, y1, ocx, ocy, di;
-	unsigned int dui;
-	Window dummy;
-	XEvent ev;
-
-	ocx = c->x;
-	ocy = c->y;
-	if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
-			None, cursor[CurMove], CurrentTime) != GrabSuccess)
-		return;
-	c->ismax = False;
-	XQueryPointer(dpy, root, &dummy, &dummy, &x1, &y1, &di, &di, &dui);
-	for(;;) {
-		XMaskEvent(dpy, MOUSEMASK | ExposureMask | SubstructureRedirectMask, &ev);
-		switch (ev.type) {
-		case ButtonRelease:
-			resize(c, True);
-			XUngrabPointer(dpy, CurrentTime);
-			return;
-		case ConfigureRequest:
-		case Expose:
-		case MapRequest:
-			handler[ev.type](&ev);
-			break;
-		case MotionNotify:
-			XSync(dpy, False);
-			c->x = ocx + (ev.xmotion.x - x1);
-			c->y = ocy + (ev.xmotion.y - y1);
-			if(abs(wax + c->x) < SNAP)
-				c->x = wax;
-			else if(abs((wax + waw) - (c->x + c->w + 2 * c->border)) < SNAP)
-				c->x = wax + waw - c->w - 2 * c->border;
-			if(abs(way - c->y) < SNAP)
-				c->y = way;
-			else if(abs((way + wah) - (c->y + c->h + 2 * c->border)) < SNAP)
-				c->y = way + wah - c->h - 2 * c->border;
-			resize(c, False);
-			break;
-		}
-	}
-}
-
-static void
-resizemouse(Client *c) {
-	int ocx, ocy;
-	int nw, nh;
-	XEvent ev;
-
-	ocx = c->x;
-	ocy = c->y;
-	if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
-			None, cursor[CurResize], CurrentTime) != GrabSuccess)
-		return;
-	c->ismax = False;
-	XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->border - 1, c->h + c->border - 1);
-	for(;;) {
-		XMaskEvent(dpy, MOUSEMASK | ExposureMask | SubstructureRedirectMask , &ev);
-		switch(ev.type) {
-		case ButtonRelease:
-			resize(c, True);
-			XUngrabPointer(dpy, CurrentTime);
-			return;
-		case ConfigureRequest:
-		case Expose:
-		case MapRequest:
-			handler[ev.type](&ev);
-			break;
-		case MotionNotify:
-			XSync(dpy, False);
-			nw = ev.xmotion.x - ocx - 2 * c->border + 1;
-			c->w = nw > 0 ? nw : 1;
-			nh = ev.xmotion.y - ocy - 2 * c->border + 1;
-			c->h = nh > 0 ? nh : 1;
-			resize(c, True);
-			break;
-		}
-	}
-}
-
-static void
-buttonpress(XEvent *e) {
-	int x;
-	int i;
-	Client *c;
-	XButtonPressedEvent *ev = &e->xbutton;
-
-	if(barwin == ev->window) {
-		if(ev->button == Button1) {
-			toggleview();
-		}
-		return;
-	} else if((c = getclient(ev->window))) {
-		focus(c);
-		if(CLEANMASK(ev->state) != MODKEY)
-			return;
-		if(ev->button == Button1 && (arrange == dofloat || c->isfloat)) {
-			restack();
-			movemouse(c);
-		} else if(ev->button == Button3 && (arrange == dofloat || c->isfloat) && !c->isfixed) {
-			restack();
-			resizemouse(c);
-		}
-	}
-}
-
-static void
-configurerequest(XEvent *e) {
-	unsigned long newmask;
-	Client *c;
-	XConfigureRequestEvent *ev = &e->xconfigurerequest;
-	XWindowChanges wc;
-
-	if((c = getclient(ev->window))) {
-		c->ismax = False;
-		if(ev->value_mask & CWX)
-			c->x = ev->x;
-		if(ev->value_mask & CWY)
-			c->y = ev->y;
-		if(ev->value_mask & CWWidth)
-			c->w = ev->width;
-		if(ev->value_mask & CWHeight)
-			c->h = ev->height;
-		if(ev->value_mask & CWBorderWidth)
-			c->border = ev->border_width;
-		wc.x = c->x;
-		wc.y = c->y;
-		wc.width = c->w;
-		wc.height = c->h;
-		newmask = ev->value_mask & (~(CWSibling | CWStackMode | CWBorderWidth));
-		if(newmask)
-			XConfigureWindow(dpy, c->win, newmask, &wc);
-		else
-			configure(c);
-		XSync(dpy, False);
-		if(c->isfloat) {
-			resize(c, False);
-			if(!isvisible(c))
-				XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
-		}
-		else
-			arrange();
-	} else {
-		wc.x = ev->x;
-		wc.y = ev->y;
-		wc.width = ev->width;
-		wc.height = ev->height;
-		wc.border_width = ev->border_width;
-		wc.sibling = ev->above;
-		wc.stack_mode = ev->detail;
-		XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
-		XSync(dpy, False);
-	}
-}
-
-static void
-destroynotify(XEvent *e) {
-	Client *c;
-	XDestroyWindowEvent *ev = &e->xdestroywindow;
-
-	if((c = getclient(ev->window)))
-		unmanage(c);
-}
-
-static void
-enternotify(XEvent *e) {
-	Client *c;
-	XCrossingEvent *ev = &e->xcrossing;
-
-	if(ev->mode != NotifyNormal || ev->detail == NotifyInferior)
-		return;
-	if((c = getclient(ev->window)) && isvisible(c))
-		focus(c);
-	else if(ev->window == root) {
-		selscreen = True;
-		for(c = stack; c && !isvisible(c); c = c->snext);
-		focus(c);
-	}
-}
-
-static void
-expose(XEvent *e) {
-	XExposeEvent *ev = &e->xexpose;
-
-	if(ev->count == 0) {
-		if(barwin == ev->window)
-			drawstatus();
-	}
-}
-
-static void
-keypress(XEvent *e) {
-	static unsigned int len = sizeof key / sizeof key[0];
-	unsigned int i;
-	KeySym keysym;
-	XKeyEvent *ev = &e->xkey;
-
-	keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
-	for(i = 0; i < len; i++) {
-		if(keysym == key[i].keysym && CLEANMASK(key[i].mod) == CLEANMASK(ev->state)) {
-			if(key[i].func)
-				key[i].func(key[i].cmd);
-		}
-	}
-}
-
-static void
-leavenotify(XEvent *e) {
-	XCrossingEvent *ev = &e->xcrossing;
-
-	if((ev->window == root) && !ev->same_screen) {
-		selscreen = False;
-		focus(NULL);
-	}
-}
-
-static void
-mappingnotify(XEvent *e) {
-	XMappingEvent *ev = &e->xmapping;
-
-	XRefreshKeyboardMapping(ev);
-	if(ev->request == MappingKeyboard)
-		grabkeys();
-}
-
-static void
-maprequest(XEvent *e) {
-	static XWindowAttributes wa;
-	XMapRequestEvent *ev = &e->xmaprequest;
-
-	if(!XGetWindowAttributes(dpy, ev->window, &wa))
-		return;
-	if(wa.override_redirect) {
-		XSelectInput(dpy, ev->window,
-				(StructureNotifyMask | PropertyChangeMask));
-		return;
-	}
-	if(!getclient(ev->window))
-		manage(ev->window, &wa);
-}
-
-static void
-propertynotify(XEvent *e) {
-	Client *c;
-	Window trans;
-	XPropertyEvent *ev = &e->xproperty;
-
-	if(ev->state == PropertyDelete)
-		return; /* ignore */
-	if((c = getclient(ev->window))) {
-		switch (ev->atom) {
-			default: break;
-			case XA_WM_TRANSIENT_FOR:
-				XGetTransientForHint(dpy, c->win, &trans);
-				if(!c->isfloat && (c->isfloat = (trans != 0)))
-					arrange();
-				break;
-			case XA_WM_NORMAL_HINTS:
-				updatesizehints(c);
-				break;
-		}
-		if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
-			updatetitle(c);
-			if(c == sel)
-				drawstatus();
-		}
-	}
-}
-
-static void
-unmapnotify(XEvent *e) {
-	Client *c;
-	XUnmapEvent *ev = &e->xunmap;
-
-	if((c = getclient(ev->window)))
-		unmanage(c);
-}
-
-
-
-void (*handler[LASTEvent]) (XEvent *) = {
-	[ButtonPress] = buttonpress,
-	[ConfigureRequest] = configurerequest,
-	[DestroyNotify] = destroynotify,
-	[EnterNotify] = enternotify,
-	[LeaveNotify] = leavenotify,
-	[Expose] = expose,
-	[KeyPress] = keypress,
-	[MappingNotify] = mappingnotify,
-	[MapRequest] = maprequest,
-	[PropertyNotify] = propertynotify,
-	[UnmapNotify] = unmapnotify
-};
-
-void
-grabkeys(void) {
-	static unsigned int len = sizeof key / sizeof key[0];
-	unsigned int i;
-	KeyCode code;
-
-	XUngrabKey(dpy, AnyKey, AnyModifier, root);
-	for(i = 0; i < len; i++) {
-		code = XKeysymToKeycode(dpy, key[i].keysym);
-		XGrabKey(dpy, code, key[i].mod, root, True,
-				GrabModeAsync, GrabModeAsync);
-		XGrabKey(dpy, code, key[i].mod | LockMask, root, True,
-				GrabModeAsync, GrabModeAsync);
-		XGrabKey(dpy, code, key[i].mod | numlockmask, root, True,
-				GrabModeAsync, GrabModeAsync);
-		XGrabKey(dpy, code, key[i].mod | numlockmask | LockMask, root, True,
-				GrabModeAsync, GrabModeAsync);
-	}
-}
-
-void
-procevent(void) {
-	XEvent ev;
-
-	while(XPending(dpy)) {
-		XNextEvent(dpy, &ev);
-		if(handler[ev.type])
-			(handler[ev.type])(&ev); /* call handler */
-	}
-}
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-/* from draw.c */
-/* static */
-
-static unsigned int
-textnw(const char *text, unsigned int len) {
-	XRectangle r;
-
-	if(dc.font.set) {
-		XmbTextExtents(dc.font.set, text, len, NULL, &r);
-		return r.width;
-	}
-	return XTextWidth(dc.font.xfont, text, len);
-}
-
-static void
-drawtext(const char *text, unsigned long col[ColLast]) {
-	int x, y, w, h;
-	static char buf[256];
-	unsigned int len, olen;
-	XGCValues gcv;
-	XRectangle r = { dc.x, dc.y, dc.w, dc.h };
-
-	XSetForeground(dpy, dc.gc, col[ColBG]);
-	XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
-	if(!text)
-		return;
-	w = 0;
-	olen = len = strlen(text);
-	if(len >= sizeof buf)
-		len = sizeof buf - 1;
-	memcpy(buf, text, len);
-	buf[len] = 0;
-	h = dc.font.ascent + dc.font.descent;
-	y = dc.y + (dc.h / 2) - (h / 2) + dc.font.ascent;
-	x = dc.x + (h / 2);
-	/* shorten text if necessary */
-	while(len && (w = textnw(buf, len)) > dc.w - h)
-		buf[--len] = 0;
-	if(len < olen) {
-		if(len > 1)
-			buf[len - 1] = '.';
-		if(len > 2)
-			buf[len - 2] = '.';
-		if(len > 3)
-			buf[len - 3] = '.';
-	}
-	if(w > dc.w)
-		return; /* too long */
-	gcv.foreground = col[ColFG];
-	if(dc.font.set) {
-		XChangeGC(dpy, dc.gc, GCForeground, &gcv);
-		XmbDrawString(dpy, dc.drawable, dc.font.set, dc.gc, x, y, buf, len);
-	} else {
-		gcv.font = dc.font.xfont->fid;
-		XChangeGC(dpy, dc.gc, GCForeground | GCFont, &gcv);
-		XDrawString(dpy, dc.drawable, dc.gc, x, y, buf, len);
-	}
-}
-
-
-
-void
-drawstatus(void) {
-	int x;
-	unsigned int i;
-
-	dc.x = dc.y = 0;
-	for(i = 0; i < ntags; i++) {
-		dc.w = textw(tags[i]);
-		drawtext(tags[i], ( ((i == 0 && seltag) || (i == 1 && !seltag)) ? dc.sel : dc.norm));
-		dc.x += dc.w + 1;
-	}
-	dc.w = bmw;
-	drawtext("", dc.norm);
-	x = dc.x + dc.w;
-	dc.w = textw(stext);
-	dc.x = sw - dc.w;
-	if(dc.x < x) {
-		dc.x = x;
-		dc.w = sw - x;
-	}
-	drawtext(stext, dc.norm);
-	if((dc.w = dc.x - x) > bh) {
-		dc.x = x;
-		drawtext(sel ? sel->name : NULL, dc.norm);
-	}
-	XCopyArea(dpy, dc.drawable, barwin, dc.gc, 0, 0, sw, bh, 0, 0);
-	XSync(dpy, False);
-}
-
-unsigned long
-getcolor(const char *colstr) {
-	Colormap cmap = DefaultColormap(dpy, screen);
-	XColor color;
-
-	if(!XAllocNamedColor(dpy, cmap, colstr, &color, &color))
-		eprint("error, cannot allocate color '%s'\n", colstr);
-	return color.pixel;
-}
-
-void
-setfont(const char *fontstr) {
-	char *def, **missing;
-	int i, n;
-
-	missing = NULL;
-	if(dc.font.set)
-		XFreeFontSet(dpy, dc.font.set);
-	dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
-	if(missing) {
-		while(n--)
-			fprintf(stderr, "missing fontset: %s\n", missing[n]);
-		XFreeStringList(missing);
-	}
-	if(dc.font.set) {
-		XFontSetExtents *font_extents;
-		XFontStruct **xfonts;
-		char **font_names;
-		dc.font.ascent = dc.font.descent = 0;
-		font_extents = XExtentsOfFontSet(dc.font.set);
-		n = XFontsOfFontSet(dc.font.set, &xfonts, &font_names);
-		for(i = 0, dc.font.ascent = 0, dc.font.descent = 0; i < n; i++) {
-			if(dc.font.ascent < (*xfonts)->ascent)
-				dc.font.ascent = (*xfonts)->ascent;
-			if(dc.font.descent < (*xfonts)->descent)
-				dc.font.descent = (*xfonts)->descent;
-			xfonts++;
-		}
-	} else {
-		if(dc.font.xfont)
-			XFreeFont(dpy, dc.font.xfont);
-		dc.font.xfont = NULL;
-		if(!(dc.font.xfont = XLoadQueryFont(dpy, fontstr)))
-			eprint("error, cannot load font: '%s'\n", fontstr);
-		dc.font.ascent = dc.font.xfont->ascent;
-		dc.font.descent = dc.font.xfont->descent;
-	}
-	dc.font.height = dc.font.ascent + dc.font.descent;
-}
-
-unsigned int
-textw(const char *text) {
-	return textnw(text, strlen(text)) + dc.font.height;
-}
-
-
-
-
-
-
-
-
-
-
-
-/* from client.c */
-/* static */
-
-static void
-detachstack(Client *c) {
-	Client **tc;
-	for(tc=&stack; *tc && *tc != c; tc=&(*tc)->snext);
-	*tc = c->snext;
-}
-
-static void
-grabbuttons(Client *c, Bool focused) {
-	XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
-
-	if(focused) {
-		XGrabButton(dpy, Button1, MODKEY, c->win, False, BUTTONMASK,
-				GrabModeAsync, GrabModeSync, None, None);
-		XGrabButton(dpy, Button1, MODKEY | LockMask, c->win, False, BUTTONMASK,
-				GrabModeAsync, GrabModeSync, None, None);
-		XGrabButton(dpy, Button1, MODKEY | numlockmask, c->win, False, BUTTONMASK,
-				GrabModeAsync, GrabModeSync, None, None);
-		XGrabButton(dpy, Button1, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
-				GrabModeAsync, GrabModeSync, None, None);
-
-		XGrabButton(dpy, Button2, MODKEY, c->win, False, BUTTONMASK,
-				GrabModeAsync, GrabModeSync, None, None);
-		XGrabButton(dpy, Button2, MODKEY | LockMask, c->win, False, BUTTONMASK,
-				GrabModeAsync, GrabModeSync, None, None);
-		XGrabButton(dpy, Button2, MODKEY | numlockmask, c->win, False, BUTTONMASK,
-				GrabModeAsync, GrabModeSync, None, None);
-		XGrabButton(dpy, Button2, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
-				GrabModeAsync, GrabModeSync, None, None);
-
-		XGrabButton(dpy, Button3, MODKEY, c->win, False, BUTTONMASK,
-				GrabModeAsync, GrabModeSync, None, None);
-		XGrabButton(dpy, Button3, MODKEY | LockMask, c->win, False, BUTTONMASK,
-				GrabModeAsync, GrabModeSync, None, None);
-		XGrabButton(dpy, Button3, MODKEY | numlockmask, c->win, False, BUTTONMASK,
-				GrabModeAsync, GrabModeSync, None, None);
-		XGrabButton(dpy, Button3, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
-				GrabModeAsync, GrabModeSync, None, None);
-	} else {
-		XGrabButton(dpy, AnyButton, AnyModifier, c->win, False, BUTTONMASK,
-				GrabModeAsync, GrabModeSync, None, None);
-	}
-}
-
-static void
-setclientstate(Client *c, long state) {
-	long data[] = {state, None};
-	XChangeProperty(dpy, c->win, wmatom[WMState], wmatom[WMState], 32,
-			PropModeReplace, (unsigned char *)data, 2);
-}
-
-static int
-xerrordummy(Display *dsply, XErrorEvent *ee) {
-	return 0;
-}
-
-
-
-void
-configure(Client *c) {
-	XEvent synev;
-
-	synev.type = ConfigureNotify;
-	synev.xconfigure.display = dpy;
-	synev.xconfigure.event = c->win;
-	synev.xconfigure.window = c->win;
-	synev.xconfigure.x = c->x;
-	synev.xconfigure.y = c->y;
-	synev.xconfigure.width = c->w;
-	synev.xconfigure.height = c->h;
-	synev.xconfigure.border_width = c->border;
-	synev.xconfigure.above = None;
-	XSendEvent(dpy, c->win, True, NoEventMask, &synev);
-}
-
-void
-focus(Client *c) {
-	if(c && !isvisible(c))
-		return;
-	if(sel && sel != c) {
-		grabbuttons(sel, False);
-		XSetWindowBorder(dpy, sel->win, dc.norm[ColBorder]);
-	}
-	if(c) {
-		detachstack(c);
-		c->snext = stack;
-		stack = c;
-		grabbuttons(c, True);
-	}
-	sel = c;
-	drawstatus();
-	if(!selscreen)
-		return;
-	if(c) {
-		XSetWindowBorder(dpy, c->win, dc.sel[ColBorder]);
-		XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
-	} else {
-		XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
-	}
-}
-
-Client *
-getclient(Window w) {
-	Client *c;
-
-	for(c = clients; c; c = c->next) {
-		if(c->win == w) {
-			return c;
-		}
-	}
-	return NULL;
-}
-
-Bool
-isprotodel(Client *c) {
-	int i, n;
-	Atom *protocols;
-	Bool ret = False;
-
-	if(XGetWMProtocols(dpy, c->win, &protocols, &n)) {
-		for(i = 0; !ret && i < n; i++)
-			if(protocols[i] == wmatom[WMDelete])
-				ret = True;
-		XFree(protocols);
-	}
-	return ret;
-}
-
-void
-killclient() {
-	if(!sel)
-		return;
-	if(isprotodel(sel))
-		sendevent(sel->win, wmatom[WMProtocols], wmatom[WMDelete]);
-	else
-		XKillClient(dpy, sel->win);
-}
-
-void
-manage(Window w, XWindowAttributes *wa) {
-	Client *c;
-	Window trans;
-
-	c = emallocz(sizeof(Client));
-	c->tag = True;
-	c->win = w;
-	c->x = wa->x;
-	c->y = wa->y;
-	c->w = wa->width;
-	c->h = wa->height;
-	if(c->w == sw && c->h == sh) {
-		c->border = 0;
-		c->x = sx;
-		c->y = sy;
-	} else {
-		c->border = BORDERPX;
-		if(c->x + c->w + 2 * c->border > wax + waw)
-			c->x = wax + waw - c->w - 2 * c->border;
-		if(c->y + c->h + 2 * c->border > way + wah)
-			c->y = way + wah - c->h - 2 * c->border;
-		if(c->x < wax)
-			c->x = wax;
-		if(c->y < way)
-			c->y = way;
-	}
-	updatesizehints(c);
-	XSelectInput(dpy, c->win,
-		StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
-	XGetTransientForHint(dpy, c->win, &trans);
-	grabbuttons(c, False);
-	XSetWindowBorder(dpy, c->win, dc.norm[ColBorder]);
-	updatetitle(c);
-	settags(c, getclient(trans));
-	if(!c->isfloat)
-		c->isfloat = trans || c->isfixed;
-	if(clients)
-		clients->prev = c;
-	c->next = clients;
-	c->snext = stack;
-	stack = clients = c;
-	XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
-	XMapWindow(dpy, c->win);
-	setclientstate(c, NormalState);
-	if(isvisible(c))
-		focus(c);
-	arrange();
-}
-
-void
-resize(Client *c, Bool sizehints) {
-	float actual, dx, dy, max, min;
-	XWindowChanges wc;
-
-	if(c->w <= 0 || c->h <= 0)
-		return;
-	if(sizehints) {
-		if(c->minw && c->w < c->minw)
-			c->w = c->minw;
-		if(c->minh && c->h < c->minh)
-			c->h = c->minh;
-		if(c->maxw && c->w > c->maxw)
-			c->w = c->maxw;
-		if(c->maxh && c->h > c->maxh)
-			c->h = c->maxh;
-		/* inspired by algorithm from fluxbox */
-		if(c->minay > 0 && c->maxay && (c->h - c->baseh) > 0) {
-			dx = (float)(c->w - c->basew);
-			dy = (float)(c->h - c->baseh);
-			min = (float)(c->minax) / (float)(c->minay);
-			max = (float)(c->maxax) / (float)(c->maxay);
-			actual = dx / dy;
-			if(max > 0 && min > 0 && actual > 0) {
-				if(actual < min) {
-					dy = (dx * min + dy) / (min * min + 1);
-					dx = dy * min;
-					c->w = (int)dx + c->basew;
-					c->h = (int)dy + c->baseh;
-				}
-				else if(actual > max) {
-					dy = (dx * min + dy) / (max * max + 1);
-					dx = dy * min;
-					c->w = (int)dx + c->basew;
-					c->h = (int)dy + c->baseh;
-				}
-			}
-		}
-		if(c->incw)
-			c->w -= (c->w - c->basew) % c->incw;
-		if(c->inch)
-			c->h -= (c->h - c->baseh) % c->inch;
-	}
-	if(c->w == sw && c->h == sh)
-		c->border = 0;
-	else
-		c->border = BORDERPX;
-	/* offscreen appearance fixes */
-	if(c->x > sw)
-		c->x = sw - c->w - 2 * c->border;
-	if(c->y > sh)
-		c->y = sh - c->h - 2 * c->border;
-	if(c->x + c->w + 2 * c->border < sx)
-		c->x = sx;
-	if(c->y + c->h + 2 * c->border < sy)
-		c->y = sy;
-	wc.x = c->x;
-	wc.y = c->y;
-	wc.width = c->w;
-	wc.height = c->h;
-	wc.border_width = c->border;
-	XConfigureWindow(dpy, c->win, CWX | CWY | CWWidth | CWHeight | CWBorderWidth, &wc);
-	configure(c);
-	XSync(dpy, False);
-}
-
-void
-updatesizehints(Client *c) {
-	long msize;
-	XSizeHints size;
-
-	if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
-		size.flags = PSize;
-	c->flags = size.flags;
-	if(c->flags & PBaseSize) {
-		c->basew = size.base_width;
-		c->baseh = size.base_height;
-	} else {
-		c->basew = c->baseh = 0;
-	}
-	if(c->flags & PResizeInc) {
-		c->incw = size.width_inc;
-		c->inch = size.height_inc;
-	} else {
-		c->incw = c->inch = 0;
-	}
-	if(c->flags & PMaxSize) {
-		c->maxw = size.max_width;
-		c->maxh = size.max_height;
-	} else {
-		c->maxw = c->maxh = 0;
-	}
-	if(c->flags & PMinSize) {
-		c->minw = size.min_width;
-		c->minh = size.min_height;
-	} else {
-		c->minw = c->minh = 0;
-	}
-	if(c->flags & PAspect) {
-		c->minax = size.min_aspect.x;
-		c->minay = size.min_aspect.y;
-		c->maxax = size.max_aspect.x;
-		c->maxay = size.max_aspect.y;
-	} else {
-		c->minax = c->minay = c->maxax = c->maxay = 0;
-	}
-	c->isfixed = (c->maxw && c->minw && c->maxh && c->minh &&
-				c->maxw == c->minw && c->maxh == c->minh);
-}
-
-void
-updatetitle(Client *c) {
-	char **list = NULL;
-	int n;
-	XTextProperty name;
-
-	name.nitems = 0;
-	c->name[0] = 0;
-	XGetTextProperty(dpy, c->win, &name, netatom[NetWMName]);
-	if(!name.nitems)
-		XGetWMName(dpy, c->win, &name);
-	if(!name.nitems)
-		return;
-	if(name.encoding == XA_STRING)
-		strncpy(c->name, (char *)name.value, sizeof c->name);
-	else {
-		if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success && n > 0 && *list) {
-			strncpy(c->name, *list, sizeof c->name);
-			XFreeStringList(list);
-		}
-	}
-	XFree(name.value);
-}
-
-void
-unmanage(Client *c) {
-	Client *nc;
-
-	/* The server grab construct avoids race conditions. */
-	XGrabServer(dpy);
-	XSetErrorHandler(xerrordummy);
-	detach(c);
-	detachstack(c);
-	if(sel == c) {
-		for(nc = stack; nc && !isvisible(nc); nc = nc->snext);
-		focus(nc);
-	}
-	XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
-	setclientstate(c, WithdrawnState);
-	free(c);
-	XSync(dpy, False);
-	XSetErrorHandler(xerror);
-	XUngrabServer(dpy);
-	arrange();
-}
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-/* static */
-
-
-static void
-cleanup(void) {
-	close(STDIN_FILENO);
-	while(stack) {
-		resize(stack, True);
-		unmanage(stack);
-	}
-	if(dc.font.set)
-		XFreeFontSet(dpy, dc.font.set);
-	else
-		XFreeFont(dpy, dc.font.xfont);
-	XUngrabKey(dpy, AnyKey, AnyModifier, root);
-	XFreePixmap(dpy, dc.drawable);
-	XFreeGC(dpy, dc.gc);
-	XDestroyWindow(dpy, barwin);
-	XFreeCursor(dpy, cursor[CurNormal]);
-	XFreeCursor(dpy, cursor[CurResize]);
-	XFreeCursor(dpy, cursor[CurMove]);
-	XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
-	XSync(dpy, False);
-}
-
-static void
-scan(void) {
-	unsigned int i, num;
-	Window *wins, d1, d2;
-	XWindowAttributes wa;
-
-	wins = NULL;
-	if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
-		for(i = 0; i < num; i++) {
-			if(!XGetWindowAttributes(dpy, wins[i], &wa))
-				continue;
-			if(wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
-				continue;
-			if(wa.map_state == IsViewable)
-				manage(wins[i], &wa);
-		}
-	}
-	if(wins)
-		XFree(wins);
-}
-
-static void
-setup(void) {
-	int i, j;
-	unsigned int mask;
-	Window w;
-	XModifierKeymap *modmap;
-	XSetWindowAttributes wa;
-
-	/* init atoms */
-	wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
-	wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
-	wmatom[WMState] = XInternAtom(dpy, "WM_STATE", False);
-	netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
-	netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
-	XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
-			PropModeReplace, (unsigned char *) netatom, NetLast);
-	/* init cursors */
-	cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
-	cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
-	cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
-	/* init modifier map */
-	numlockmask = 0;
-	modmap = XGetModifierMapping(dpy);
-	for (i = 0; i < 8; i++) {
-		for (j = 0; j < modmap->max_keypermod; j++) {
-			if(modmap->modifiermap[i * modmap->max_keypermod + j] == XKeysymToKeycode(dpy, XK_Num_Lock))
-				numlockmask = (1 << i);
-		}
-	}
-	XFreeModifiermap(modmap);
-	/* select for events */
-	wa.event_mask = SubstructureRedirectMask | SubstructureNotifyMask
-		| EnterWindowMask | LeaveWindowMask;
-	wa.cursor = cursor[CurNormal];
-	XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);
-	grabkeys();
-	initrregs();
-	ntags = 2;
-	seltag = True;
-	/* style */
-	dc.norm[ColBorder] = getcolor(NORMBORDERCOLOR);
-	dc.norm[ColBG] = getcolor(NORMBGCOLOR);
-	dc.norm[ColFG] = getcolor(NORMFGCOLOR);
-	dc.sel[ColBorder] = getcolor(SELBORDERCOLOR);
-	dc.sel[ColBG] = getcolor(SELBGCOLOR);
-	dc.sel[ColFG] = getcolor(SELFGCOLOR);
-	setfont(FONT);
-	/* geometry */
-	sx = sy = 0;
-	sw = DisplayWidth(dpy, screen);
-	sh = DisplayHeight(dpy, screen);
-	nmaster = NMASTER;
-	bmw = 1;
-	/* bar */
-	dc.h = bh = dc.font.height + 2;
-	wa.override_redirect = 1;
-	wa.background_pixmap = ParentRelative;
-	wa.event_mask = ButtonPressMask | ExposureMask;
-	barwin = XCreateWindow(dpy, root, sx, sy, sw, bh, 0,
-			DefaultDepth(dpy, screen), CopyFromParent, DefaultVisual(dpy, screen),
-			CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
-	XDefineCursor(dpy, barwin, cursor[CurNormal]);
-	XMapRaised(dpy, barwin);
-	strcpy(stext, "dwm-"VERSION);
-	/* windowarea */
-	wax = sx;
-	way = sy + bh;
-	wah = sh - bh;
-	waw = sw;
-	/* pixmap for everything */
-	dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
-	dc.gc = XCreateGC(dpy, root, 0, 0);
-	XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
-	/* multihead support */
-	selscreen = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask);
-}
-
-/*
- * Startup Error handler to check if another window manager
- * is already running.
- */
-static int
-xerrorstart(Display *dsply, XErrorEvent *ee) {
-	otherwm = True;
-	return -1;
-}
-
-
-
-void
-sendevent(Window w, Atom a, long value) {
-	XEvent e;
-
-	e.type = ClientMessage;
-	e.xclient.window = w;
-	e.xclient.message_type = a;
-	e.xclient.format = 32;
-	e.xclient.data.l[0] = value;
-	e.xclient.data.l[1] = CurrentTime;
-	XSendEvent(dpy, w, False, NoEventMask, &e);
-	XSync(dpy, False);
-}
-
-void
-quit() {
-	readin = running = False;
-}
-
-/* There's no way to check accesses to destroyed windows, thus those cases are
- * ignored (especially on UnmapNotify's).  Other types of errors call Xlibs
- * default error handler, which may call exit.
- */
-int
-xerror(Display *dpy, XErrorEvent *ee) {
-	if(ee->error_code == BadWindow
-	|| (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
-	|| (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
-	|| (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
-	|| (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
-	|| (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
-	|| (ee->request_code == X_GrabKey && ee->error_code == BadAccess)
-	|| (ee->request_code == X_CopyArea && ee->error_code == BadDrawable))
-		return 0;
-	fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
-		ee->request_code, ee->error_code);
-	return xerrorxlib(dpy, ee); /* may call exit */
-}
-
-int
-main(int argc, char *argv[]) {
-	char *p;
-	int r, xfd;
-	fd_set rd;
-
-	if(argc == 2 && !strncmp("-v", argv[1], 3)) {
-		fputs("dwm-"VERSION", (C)opyright MMVI-MMVII Anselm R. Garbe\n", stdout);
-		exit(EXIT_SUCCESS);
-	} else if(argc != 1) {
-		eprint("usage: dwm [-v]\n");
-	}
-	setlocale(LC_CTYPE, "");
-	dpy = XOpenDisplay(0);
-	if(!dpy) {
-		eprint("dwm: cannot open display\n");
-	}
-	xfd = ConnectionNumber(dpy);
-	screen = DefaultScreen(dpy);
-	root = RootWindow(dpy, screen);
-	otherwm = False;
-	XSetErrorHandler(xerrorstart);
-	/* this causes an error if some other window manager is running */
-	XSelectInput(dpy, root, SubstructureRedirectMask);
-	XSync(dpy, False);
-	if(otherwm) {
-		eprint("dwm: another window manager is already running\n");
-	}
-
-	XSync(dpy, False);
-	XSetErrorHandler(NULL);
-	xerrorxlib = XSetErrorHandler(xerror);
-	XSync(dpy, False);
-	setup();
-	drawstatus();
-	scan();
-
-	/* main event loop, also reads status text from stdin */
-	XSync(dpy, False);
-	procevent();
-	readin = True;
-	while(running) {
-		FD_ZERO(&rd);
-		if(readin)
-			FD_SET(STDIN_FILENO, &rd);
-		FD_SET(xfd, &rd);
-		if(select(xfd + 1, &rd, NULL, NULL, NULL) == -1) {
-			if(errno == EINTR)
-				continue;
-			eprint("select failed\n");
-		}
-		if(FD_ISSET(STDIN_FILENO, &rd)) {
-			switch(r = read(STDIN_FILENO, stext, sizeof stext - 1)) {
-			case -1:
-				strncpy(stext, strerror(errno), sizeof stext - 1);
-				stext[sizeof stext - 1] = '\0';
-				readin = False;
-				break;
-			case 0:
-				strncpy(stext, "EOF", 4);
-				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);
-			}
-			drawstatus();
-		}
-		if(FD_ISSET(xfd, &rd))
-			procevent();
-	}
-	cleanup();
-	XCloseDisplay(dpy);
-	return 0;
-}