X-Git-Url: https://jasonwoof.com/gitweb/?p=dwm.git;a=blobdiff_plain;f=dwm.c;h=66a2cb4712f6cc344c4c68551601dacc5c06a7c6;hp=b417167c866436645379575cbff994a4386197e2;hb=39d1ecd5b0b22dbd61ba5206c9f08a187f911b2a;hpb=96ee9d888cc3cf90da3b6a6852d605255d25d020

diff --git a/dwm.c b/dwm.c
index b417167..66a2cb4 100644
--- a/dwm.c
+++ b/dwm.c
@@ -33,7 +33,6 @@
 #include <sys/select.h>
 #include <sys/types.h>
 #include <sys/wait.h>
-#include <regex.h>
 #include <X11/cursorfont.h>
 #include <X11/keysym.h>
 #include <X11/Xatom.h>
@@ -45,18 +44,19 @@
 #endif
 
 /* macros */
-#define BUTTONMASK		(ButtonPressMask|ButtonReleaseMask)
-#define CLEANMASK(mask)		(mask & ~(numlockmask|LockMask))
-#define LENGTH(x)		(sizeof x / sizeof x[0])
-#define MAXTAGLEN		16
-#define MOUSEMASK		(BUTTONMASK|PointerMotionMask)
-
+#define MAX(a, b)       ((a) > (b) ? (a) : (b))
+#define MIN(a, b)       ((a) < (b) ? (a) : (b))
+#define BUTTONMASK      (ButtonPressMask|ButtonReleaseMask)
+#define CLEANMASK(mask) (mask & ~(numlockmask|LockMask))
+#define LENGTH(x)       (sizeof x / sizeof x[0])
+#define MAXTAGLEN       16
+#define MOUSEMASK       (BUTTONMASK|PointerMotionMask)
+#define TAGMASK         ((int)((1LL << LENGTH(tags)) - 1))
 
 /* enums */
-enum { BarTop, BarBot, BarOff };			/* bar position */
-enum { CurNormal, CurResize, CurMove, CurLast };	/* cursor */
-enum { ColBorder, ColFG, ColBG, ColLast };		/* color */
-enum { NetSupported, NetWMName, NetLast };		/* EWMH atoms */
+enum { CurNormal, CurResize, CurMove, CurLast };        /* cursor */
+enum { ColBorder, ColFG, ColBG, ColLast };              /* color */
+enum { NetSupported, NetWMName, NetLast };              /* EWMH atoms */
 enum { WMProtocols, WMDelete, WMName, WMState, WMLast };/* default atoms */
 
 /* typedefs */
@@ -67,9 +67,9 @@ struct Client {
 	int basew, baseh, incw, inch, maxw, maxh, minw, minh;
 	int minax, maxax, minay, maxay;
 	long flags;
-	unsigned int border, oldborder;
+	unsigned int bw, oldbw;
 	Bool isbanned, isfixed, isfloating, isurgent;
-	Bool *tags;
+	unsigned int tags;
 	Client *next;
 	Client *prev;
 	Client *snext;
@@ -94,18 +94,21 @@ typedef struct {
 typedef struct {
 	unsigned long mod;
 	KeySym keysym;
-	void (*func)(const char *arg);
-	const char *arg;
+	void (*func)(void *arg);
+	void *arg;
 } Key;
 
 typedef struct {
 	const char *symbol;
 	void (*arrange)(void);
+	void (*updategeom)(void);
 } Layout;
 
 typedef struct {
-	const char *prop;
-	const char *tag;
+	const char *class;
+	const char *instance;
+	const char *title;
+	unsigned int tags;
 	Bool isfloating;
 } Rule;
 
@@ -131,74 +134,72 @@ void *emallocz(unsigned int size);
 void enternotify(XEvent *e);
 void eprint(const char *errstr, ...);
 void expose(XEvent *e);
-void floating(void); /* default floating layout */
 void focus(Client *c);
 void focusin(XEvent *e);
-void focusnext(const char *arg);
-void focusprev(const char *arg);
+void focusnext(void *arg);
+void focusprev(void *arg);
 Client *getclient(Window w);
 unsigned long getcolor(const char *colstr);
 long getstate(Window w);
 Bool gettextprop(Window w, Atom atom, char *text, unsigned int size);
 void grabbuttons(Client *c, Bool focused);
 void grabkeys(void);
-unsigned int idxoftag(const char *t);
 void initfont(const char *fontstr);
 Bool isoccupied(unsigned int t);
 Bool isprotodel(Client *c);
 Bool isurgent(unsigned int t);
 Bool isvisible(Client *c);
 void keypress(XEvent *e);
-void killclient(const char *arg);
+void killclient(void *arg);
 void manage(Window w, XWindowAttributes *wa);
 void mappingnotify(XEvent *e);
 void maprequest(XEvent *e);
-void monocle(void);
 void movemouse(Client *c);
-Client *nexttiled(Client *c);
+Client *nextunfloating(Client *c);
 void propertynotify(XEvent *e);
-void quit(const char *arg);
-void reapply(const char *arg);
+void quit(void *arg);
 void resize(Client *c, int x, int y, int w, int h, Bool sizehints);
 void resizemouse(Client *c);
 void restack(void);
 void run(void);
 void scan(void);
 void setclientstate(Client *c, long state);
-void setlayout(const char *arg);
-void setmwfact(const char *arg);
+void setmfact(void *arg);
 void setup(void);
-void spawn(const char *arg);
-void tag(const char *arg);
+void spawn(void *arg);
+void tag(void *arg);
 unsigned int textnw(const char *text, unsigned int len);
 unsigned int textw(const char *text);
 void tile(void);
-void togglebar(const char *arg);
-void togglefloating(const char *arg);
-void toggletag(const char *arg);
-void toggleview(const char *arg);
+void tileresize(Client *c, int x, int y, int w, int h);
+void togglebar(void *arg);
+void togglefloating(void *arg);
+void togglelayout(void *arg);
+void toggletag(void *arg);
+void toggleview(void *arg);
 void unban(Client *c);
 void unmanage(Client *c);
 void unmapnotify(XEvent *e);
-void updatebarpos(void);
+void updatebar(void);
+void updategeom(void);
 void updatesizehints(Client *c);
+void updatetilegeom(void);
 void updatetitle(Client *c);
 void updatewmhints(Client *c);
-void view(const char *arg);
-void viewprevtag(const char *arg);	/* views previous selected tags */
+void view(void *arg);
+void viewprevtag(void *arg);
 int xerror(Display *dpy, XErrorEvent *ee);
 int xerrordummy(Display *dpy, XErrorEvent *ee);
 int xerrorstart(Display *dpy, XErrorEvent *ee);
-void zoom(const char *arg);
-void selectview(const char *arg);
+void zoom(void *arg);
 
 /* variables */
-char stext[256], buf[256];
-double mwfact;
-int screen, sx, sy, sw, sh, wax, way, waw, wah, xscreens;
+char stext[256];
+int screen, sx, sy, sw, sh;
+int bx, by, bw, bh, blw, wx, wy, ww, wh;
+int mx, my, mw, mh, tx, ty, tw, th;
+unsigned int seltags = 0;
 int (*xerrorxlib)(Display *, XErrorEvent *);
-unsigned int bh, bpos;
-unsigned int blw = 0;
 unsigned int numlockmask = 0;
 void (*handler[LASTEvent]) (XEvent *) = {
 	[ButtonPress] = buttonpress,
@@ -215,35 +216,30 @@ void (*handler[LASTEvent]) (XEvent *) = {
 	[UnmapNotify] = unmapnotify
 };
 Atom wmatom[WMLast], netatom[NetLast];
-Bool domwfact = True;
-Bool dozoom = True;
 Bool otherwm, readin;
 Bool running = True;
-Bool *prevtags;
-Bool *seltags;
+unsigned int tagset[] = {1, 1}; /* after start, first tag is selected */
 Client *clients = NULL;
 Client *sel = NULL;
 Client *stack = NULL;
 Cursor cursor[CurLast];
 Display *dpy;
 DC dc = {0};
-Layout *lt;
+Layout layouts[];
+Layout *lt = layouts;
 Window root, barwin;
-#ifdef XINERAMA
-XineramaScreenInfo *info = NULL;
-#endif
 
 /* configuration, allows nested code to access above variables */
 #include "config.h"
-#define TAGSZ (LENGTH(tags) * sizeof(Bool))
-static Bool tmp[LENGTH(tags)];
+
+/* check if all tags will fit into a unsigned int bitarray. */
+static char tags_is_a_sign_that_your_IQ[sizeof(int) * 8 < LENGTH(tags) ? -1 : 1];
 
 /* function implementations */
 
 void
 applyrules(Client *c) {
 	unsigned int i;
-	Bool matched = False;
 	Rule *r;
 	XClassHint ch = { 0 };
 
@@ -251,23 +247,19 @@ applyrules(Client *c) {
 	XGetClassHint(dpy, c->win, &ch);
 	for(i = 0; i < LENGTH(rules); i++) {
 		r = &rules[i];
-		if(strstr(c->name, r->prop)
-		|| (ch.res_class && strstr(ch.res_class, r->prop))
-		|| (ch.res_name && strstr(ch.res_name, r->prop)))
-		{
+		if((!r->title || strstr(c->name, r->title))
+		&& (!r->class || (ch.res_class && strstr(ch.res_class, r->class)))
+		&& (!r->instance || (ch.res_name && strstr(ch.res_name, r->instance)))) {
 			c->isfloating = r->isfloating;
-			if(r->tag) {
-				c->tags[idxoftag(r->tag)] = True;
-				matched = True;
-			}
+			c->tags |= r->tags & TAGMASK;
 		}
 	}
 	if(ch.res_class)
 		XFree(ch.res_class);
 	if(ch.res_name)
 		XFree(ch.res_name);
-	if(!matched)
-		memcpy(c->tags, seltags, TAGSZ);
+	if(!c->tags)
+		c->tags = tagset[seltags];
 }
 
 void
@@ -275,13 +267,17 @@ arrange(void) {
 	Client *c;
 
 	for(c = clients; c; c = c->next)
-		if(isvisible(c))
+		if(isvisible(c)) {
 			unban(c);
+			if(!lt->arrange || c->isfloating)
+				resize(c, c->x, c->y, c->w, c->h, True);
+		}
 		else
 			ban(c);
 
 	focus(NULL);
-	lt->arrange();
+	if(lt->arrange)
+		lt->arrange();
 	restack();
 }
 
@@ -303,13 +299,13 @@ void
 ban(Client *c) {
 	if(c->isbanned)
 		return;
-	XMoveWindow(dpy, c->win, c->x + 3 * sw, c->y);
+	XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
 	c->isbanned = True;
 }
 
 void
 buttonpress(XEvent *e) {
-	unsigned int i, x;
+	unsigned int i, x, mask;
 	Client *c;
 	XButtonPressedEvent *ev = &e->xbutton;
 
@@ -318,23 +314,24 @@ buttonpress(XEvent *e) {
 		for(i = 0; i < LENGTH(tags); i++) {
 			x += textw(tags[i]);
 			if(ev->x < x) {
+				mask = 1 << i;
 				if(ev->button == Button1) {
 					if(ev->state & MODKEY)
-						tag(tags[i]);
+						tag(&mask);
 					else
-						view(tags[i]);
+						view(&mask);
 				}
 				else if(ev->button == Button3) {
 					if(ev->state & MODKEY)
-						toggletag(tags[i]);
+						toggletag(&mask);
 					else
-						toggleview(tags[i]);
+						toggleview(&mask);
 				}
 				return;
 			}
 		}
-		if((ev->x < x + blw) && ev->button == Button1)
-			setlayout(NULL);
+		if((ev->x < x + blw) && ev->button == Button1) 
+			togglelayout(NULL);
 	}
 	else if((c = getclient(ev->window))) {
 		focus(c);
@@ -344,12 +341,8 @@ buttonpress(XEvent *e) {
 			restack();
 			movemouse(c);
 		}
-		else if(ev->button == Button2) {
-			if((floating != lt->arrange) && c->isfloating)
-				togglefloating(NULL);
-			else
-				zoom(NULL);
-		}
+		else if(ev->button == Button2)
+			togglefloating(NULL);
 		else if(ev->button == Button3 && !c->isfixed) {
 			restack();
 			resizemouse(c);
@@ -375,7 +368,6 @@ checkotherwm(void) {
 
 void
 cleanup(void) {
-
 	close(STDIN_FILENO);
 	while(stack) {
 		unban(stack);
@@ -385,7 +377,6 @@ cleanup(void) {
 		XFreeFontSet(dpy, dc.font.set);
 	else
 		XFreeFont(dpy, dc.font.xfont);
-
 	XUngrabKey(dpy, AnyKey, AnyModifier, root);
 	XFreePixmap(dpy, dc.drawable);
 	XFreeGC(dpy, dc.gc);
@@ -393,10 +384,6 @@ cleanup(void) {
 	XFreeCursor(dpy, cursor[CurResize]);
 	XFreeCursor(dpy, cursor[CurMove]);
 	XDestroyWindow(dpy, barwin);
-#if XINERAMA
-	if(info)
-		XFree(info);
-#endif
 	XSync(dpy, False);
 	XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
 }
@@ -413,7 +400,7 @@ configure(Client *c) {
 	ce.y = c->y;
 	ce.width = c->w;
 	ce.height = c->h;
-	ce.border_width = c->border;
+	ce.border_width = c->bw;
 	ce.above = None;
 	ce.override_redirect = False;
 	XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&ce);
@@ -424,13 +411,10 @@ configurenotify(XEvent *e) {
 	XConfigureEvent *ev = &e->xconfigure;
 
 	if(ev->window == root && (ev->width != sw || ev->height != sh)) {
-		/* TODO -- use Xinerama dimensions here ? */
 		sw = ev->width;
 		sh = ev->height;
-		XFreePixmap(dpy, dc.drawable);
-		dc.drawable = XCreatePixmap(dpy, root, DisplayWidth(root, screen), bh, DefaultDepth(dpy, screen));
-		XResizeWindow(dpy, barwin, sw, bh);
-		updatebarpos();
+		updategeom();
+		updatebar();
 		arrange();
 	}
 }
@@ -441,11 +425,10 @@ configurerequest(XEvent *e) {
 	XConfigureRequestEvent *ev = &e->xconfigurerequest;
 	XWindowChanges wc;
 
-	/* TODO -- consider Xinerama if necessary when centering */
 	if((c = getclient(ev->window))) {
 		if(ev->value_mask & CWBorderWidth)
-			c->border = ev->border_width;
-		if(c->isfixed || c->isfloating || (floating == lt->arrange)) {
+			c->bw = ev->border_width;
+		if(c->isfixed || c->isfloating || !lt->arrange) {
 			if(ev->value_mask & CWX)
 				c->x = sx + ev->x;
 			if(ev->value_mask & CWY)
@@ -480,16 +463,6 @@ configurerequest(XEvent *e) {
 	XSync(dpy, False);
 }
 
-Bool
-conflicts(Client *c, unsigned int tidx) {
-	unsigned int i;
-
-	for(i = 0; i < LENGTH(tags); i++)
-		if(c->tags[i])
-			return True; /* conflict */
-	return False;
-}
-
 void
 destroynotify(XEvent *e) {
 	Client *c;
@@ -514,7 +487,7 @@ void
 detachstack(Client *c) {
 	Client **tc;
 
-	for(tc=&stack; *tc && *tc != c; tc=&(*tc)->snext);
+	for(tc = &stack; *tc && *tc != c; tc = &(*tc)->snext);
 	*tc = c->snext;
 }
 
@@ -527,24 +500,28 @@ drawbar(void) {
 	for(c = stack; c && !isvisible(c); c = c->snext);
 	for(i = 0; i < LENGTH(tags); i++) {
 		dc.w = textw(tags[i]);
-		if(seltags[i]) {
+		if(tagset[seltags] & 1 << i) {
 			drawtext(tags[i], dc.sel, isurgent(i));
-			drawsquare(c && c->tags[i], isoccupied(i), isurgent(i), dc.sel);
+			drawsquare(c && c->tags & 1 << i, isoccupied(i), isurgent(i), dc.sel);
 		}
 		else {
 			drawtext(tags[i], dc.norm, isurgent(i));
-			drawsquare(c && c->tags[i], isoccupied(i), isurgent(i), dc.norm);
+			drawsquare(c && c->tags & 1 << i, isoccupied(i), isurgent(i), dc.norm);
 		}
 		dc.x += dc.w;
 	}
-	dc.w = blw;
-	drawtext(lt->symbol, dc.norm, False);
-	x = dc.x + dc.w;
+	if(blw > 0) {
+		dc.w = blw;
+		drawtext(lt->symbol, dc.norm, False);
+		x = dc.x + dc.w;
+	}
+	else
+		x = dc.x;
 	dc.w = textw(stext);
-	dc.x = sw - dc.w;
+	dc.x = bw - dc.w;
 	if(dc.x < x) {
 		dc.x = x;
-		dc.w = sw - x;
+		dc.w = bw - x;
 	}
 	drawtext(stext, dc.norm, False);
 	if((dc.w = dc.x - x) > bh) {
@@ -556,7 +533,7 @@ drawbar(void) {
 		else
 			drawtext(NULL, dc.norm, False);
 	}
-	XCopyArea(dpy, dc.drawable, barwin, dc.gc, 0, 0, sw, bh, 0, 0);
+	XCopyArea(dpy, dc.drawable, barwin, dc.gc, 0, 0, bw, bh, 0, 0);
 	XSync(dpy, False);
 }
 
@@ -586,23 +563,23 @@ drawtext(const char *text, unsigned long col[ColLast], Bool invert) {
 	int x, y, w, h;
 	unsigned int len, olen;
 	XRectangle r = { dc.x, dc.y, dc.w, dc.h };
+	char buf[256];
 
 	XSetForeground(dpy, dc.gc, col[invert ? ColFG : 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;
+	olen = strlen(text);
+	len = MIN(olen, sizeof buf);
 	memcpy(buf, text, len);
-	buf[len] = 0;
+	w = 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;
+	for(; len && (w = textnw(buf, len)) > dc.w - h; len--);
+	if(!len)
+		return;
 	if(len < olen) {
 		if(len > 1)
 			buf[len - 1] = '.';
@@ -611,8 +588,6 @@ drawtext(const char *text, unsigned long col[ColLast], Bool invert) {
 		if(len > 3)
 			buf[len - 3] = '.';
 	}
-	if(w > dc.w)
-		return; /* too long */
 	XSetForeground(dpy, dc.gc, col[invert ? ColBG : ColFG]);
 	if(dc.font.set)
 		XmbDrawString(dpy, dc.drawable, dc.font.set, dc.gc, x, y, buf, len);
@@ -661,16 +636,6 @@ expose(XEvent *e) {
 }
 
 void
-floating(void) { /* default floating layout */
-	Client *c;
-
-	domwfact = dozoom = False;
-	for(c = clients; c; c = c->next)
-		if(isvisible(c))
-			resize(c, c->x, c->y, c->w, c->h, True);
-}
-
-void
 focus(Client *c) {
 	if(!c || (c && !isvisible(c)))
 		for(c = stack; c && !isvisible(c); c = c->snext);
@@ -702,7 +667,7 @@ focusin(XEvent *e) { /* there are some broken focus acquiring clients */
 }
 
 void
-focusnext(const char *arg) {
+focusnext(void *arg) {
 	Client *c;
 
 	if(!sel)
@@ -717,7 +682,7 @@ focusnext(const char *arg) {
 }
 
 void
-focusprev(const char *arg) {
+focusprev(void *arg) {
 	Client *c;
 
 	if(!sel)
@@ -797,43 +762,24 @@ gettextprop(Window w, Atom atom, char *text, unsigned int size) {
 
 void
 grabbuttons(Client *c, Bool focused) {
-	XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
+	int i, j;
+	unsigned int buttons[]   = { Button1, Button2, Button3 };
+	unsigned int modifiers[] = { MODKEY, MODKEY|LockMask, MODKEY|numlockmask,
+				MODKEY|numlockmask|LockMask} ;
 
-	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);
-	}
+	XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
+	if(focused)
+		for(i = 0; i < LENGTH(buttons); i++)
+			for(j = 0; j < LENGTH(modifiers); j++)
+				XGrabButton(dpy, buttons[i], modifiers[j], c->win, False,
+					BUTTONMASK, GrabModeAsync, GrabModeSync, None, None);
 	else
-		XGrabButton(dpy, AnyButton, AnyModifier, c->win, False, BUTTONMASK,
-				GrabModeAsync, GrabModeSync, None, None);
+		XGrabButton(dpy, AnyButton, AnyModifier, c->win, False,
+			BUTTONMASK, GrabModeAsync, GrabModeSync, None, None);
 }
 
 void
-grabkeys(void)  {
+grabkeys(void) {
 	unsigned int i, j;
 	KeyCode code;
 	XModifierKeymap *modmap;
@@ -861,14 +807,6 @@ grabkeys(void)  {
 	}
 }
 
-unsigned int
-idxoftag(const char *t) {
-	unsigned int i;
-
-	for(i = 0; (i < LENGTH(tags)) && (tags[i] != t); i++);
-	return (i < LENGTH(tags)) ? i : 0;
-}
-
 void
 initfont(const char *fontstr) {
 	char *def, **missing;
@@ -891,10 +829,8 @@ initfont(const char *fontstr) {
 		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;
+			dc.font.ascent = MAX(dc.font.ascent, (*xfonts)->ascent);
+			dc.font.descent = MAX(dc.font.descent,(*xfonts)->descent);
 			xfonts++;
 		}
 	}
@@ -916,7 +852,7 @@ isoccupied(unsigned int t) {
 	Client *c;
 
 	for(c = clients; c; c = c->next)
-		if(c->tags[t])
+		if(c->tags & 1 << t)
 			return True;
 	return False;
 }
@@ -941,19 +877,14 @@ isurgent(unsigned int t) {
 	Client *c;
 
 	for(c = clients; c; c = c->next)
-		if(c->isurgent && c->tags[t])
+		if(c->isurgent && c->tags & 1 << t)
 			return True;
 	return False;
 }
 
 Bool
 isvisible(Client *c) {
-	unsigned int i;
-
-	for(i = 0; i < LENGTH(tags); i++)
-		if(c->tags[i] && seltags[i])
-			return True;
-	return False;
+	return c->tags & tagset[seltags];
 }
 
 void
@@ -974,7 +905,7 @@ keypress(XEvent *e) {
 }
 
 void
-killclient(const char *arg) {
+killclient(void *arg) {
 	XEvent ev;
 
 	if(!sel)
@@ -1000,32 +931,30 @@ manage(Window w, XWindowAttributes *wa) {
 	XWindowChanges wc;
 
 	c = emallocz(sizeof(Client));
-	c->tags = emallocz(TAGSZ);
 	c->win = w;
 
-	c->x = wa->x + sx;
-	c->y = wa->y + sy;
+	/* geometry */
+	c->x = wa->x;
+	c->y = wa->y;
 	c->w = wa->width;
 	c->h = wa->height;
-	c->oldborder = wa->border_width;
-
+	c->oldbw = wa->border_width;
 	if(c->w == sw && c->h == sh) {
 		c->x = sx;
 		c->y = sy;
-		c->border = wa->border_width;
+		c->bw = wa->border_width;
 	}
 	else {
-		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;
-		c->border = BORDERPX;
+		if(c->x + c->w + 2 * c->bw > sx + sw)
+			c->x = sx + sw - c->w - 2 * c->bw;
+		if(c->y + c->h + 2 * c->bw > sy + sh)
+			c->y = sy + sh - c->h - 2 * c->bw;
+		c->x = MAX(c->x, sx);
+		c->y = MAX(c->y, by == 0 ? bh : sy);
+		c->bw = borderpx;
 	}
-	wc.border_width = c->border;
+
+	wc.border_width = c->bw;
 	XConfigureWindow(dpy, w, CWBorderWidth, &wc);
 	XSetWindowBorder(dpy, w, dc.norm[ColBorder]);
 	configure(c); /* propagates border_width, if size doesn't change */
@@ -1036,7 +965,7 @@ manage(Window w, XWindowAttributes *wa) {
 	if((rettrans = XGetTransientForHint(dpy, w, &trans) == Success))
 		for(t = clients; t && t->win != trans; t = t->next);
 	if(t)
-		memcpy(c->tags, t->tags, TAGSZ);
+		c->tags = t->tags;
 	else
 		applyrules(c);
 	if(!c->isfloating)
@@ -1073,16 +1002,6 @@ maprequest(XEvent *e) {
 }
 
 void
-monocle(void) {
-	Client *c;
-
-	domwfact = dozoom = False;
-	for(c = clients; c; c = c->next)
-		if(isvisible(c))
-			resize(c, wax, way, waw - 2 * c->border, wah - 2 * c->border, RESIZEHINTS);
-}
-
-void
 movemouse(Client *c) {
 	int x1, y1, ocx, ocy, di, nx, ny;
 	unsigned int dui;
@@ -1092,7 +1011,7 @@ movemouse(Client *c) {
 	ocx = nx = c->x;
 	ocy = ny = c->y;
 	if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
-			None, cursor[CurMove], CurrentTime) != GrabSuccess)
+	None, cursor[CurMove], CurrentTime) != GrabSuccess)
 		return;
 	XQueryPointer(dpy, root, &dummy, &dummy, &x1, &y1, &di, &di, &dui);
 	for(;;) {
@@ -1110,17 +1029,20 @@ movemouse(Client *c) {
 			XSync(dpy, False);
 			nx = ocx + (ev.xmotion.x - x1);
 			ny = ocy + (ev.xmotion.y - y1);
-			if(abs(wax - nx) < SNAP)
-				nx = wax;
-			else if(abs((wax + waw) - (nx + c->w + 2 * c->border)) < SNAP)
-				nx = wax + waw - c->w - 2 * c->border;
-			if(abs(way - ny) < SNAP)
-				ny = way;
-			else if(abs((way + wah) - (ny + c->h + 2 * c->border)) < SNAP)
-				ny = way + wah - c->h - 2 * c->border;
-			if(!c->isfloating && (lt->arrange != floating) && (abs(nx - c->x) > SNAP || abs(ny - c->y) > SNAP))
-				togglefloating(NULL);
-			if((lt->arrange == floating) || c->isfloating)
+			if(snap && nx >= wx && nx <= wx + ww
+			        && ny >= wy && ny <= wy + wh) {
+				if(abs(wx - nx) < snap)
+					nx = wx;
+				else if(abs((wx + ww) - (nx + c->w + 2 * c->bw)) < snap)
+					nx = wx + ww - c->w - 2 * c->bw;
+				if(abs(wy - ny) < snap)
+					ny = wy;
+				else if(abs((wy + wh) - (ny + c->h + 2 * c->bw)) < snap)
+					ny = wy + wh - c->h - 2 * c->bw;
+				if(!c->isfloating && lt->arrange && (abs(nx - c->x) > snap || abs(ny - c->y) > snap))
+					togglefloating(NULL);
+			}
+			if(!lt->arrange || c->isfloating)
 				resize(c, nx, ny, c->w, c->h, False);
 			break;
 		}
@@ -1128,7 +1050,7 @@ movemouse(Client *c) {
 }
 
 Client *
-nexttiled(Client *c) {
+nextunfloating(Client *c) {
 	for(; c && (c->isfloating || !isvisible(c)); c = c->next);
 	return c;
 }
@@ -1166,42 +1088,29 @@ propertynotify(XEvent *e) {
 }
 
 void
-quit(const char *arg) {
+quit(void *arg) {
 	readin = running = False;
 }
 
 void
-reapply(const char *arg) {
-	static Bool zerotags[LENGTH(tags)] = { 0 };
-	Client *c;
-
-	for(c = clients; c; c = c->next) {
-		memcpy(c->tags, zerotags, sizeof zerotags);
-		applyrules(c);
-	}
-	arrange();
-}
-
-void
 resize(Client *c, int x, int y, int w, int h, Bool sizehints) {
 	XWindowChanges wc;
 
 	if(sizehints) {
 		/* set minimum possible */
-		if (w < 1)
-			w = 1;
-		if (h < 1)
-			h = 1;
+		w = MAX(1, w);
+		h = MAX(1, h);
 
 		/* temporarily remove base dimensions */
 		w -= c->basew;
 		h -= c->baseh;
 
 		/* adjust for aspect limits */
-		if (c->minay > 0 && c->maxay > 0 && c->minax > 0 && c->maxax > 0) {
-			if (w * c->maxay > h * c->maxax)
+		if(c->minax != c->maxax && c->minay != c->maxay 
+		&& c->minax > 0 && c->maxax > 0 && c->minay > 0 && c->maxay > 0) {
+			if(w * c->maxay > h * c->maxax)
 				w = h * c->maxax / c->maxay;
-			else if (w * c->minay < h * c->minax)
+			else if(w * c->minay < h * c->minax)
 				h = w * c->minay / c->minax;
 		}
 
@@ -1215,31 +1124,31 @@ resize(Client *c, int x, int y, int w, int h, Bool sizehints) {
 		w += c->basew;
 		h += c->baseh;
 
-		if(c->minw > 0 && w < c->minw)
-			w = c->minw;
-		if(c->minh > 0 && h < c->minh)
-			h = c->minh;
-		if(c->maxw > 0 && w > c->maxw)
-			w = c->maxw;
-		if(c->maxh > 0 && h > c->maxh)
-			h = c->maxh;
+		w = MAX(w, c->minw);
+		h = MAX(h, c->minh);
+		
+		if (c->maxw)
+			w = MIN(w, c->maxw);
+
+		if (c->maxh)
+			h = MIN(h, c->maxh);
 	}
 	if(w <= 0 || h <= 0)
 		return;
 	if(x > sx + sw)
-		x = sw - w - 2 * c->border;
+		x = sw - w - 2 * c->bw;
 	if(y > sy + sh)
-		y = sh - h - 2 * c->border;
-	if(x + w + 2 * c->border < sx)
+		y = sh - h - 2 * c->bw;
+	if(x + w + 2 * c->bw < sx)
 		x = sx;
-	if(y + h + 2 * c->border < sy)
+	if(y + h + 2 * c->bw < sy)
 		y = sy;
 	if(c->x != x || c->y != y || c->w != w || c->h != h) {
 		c->x = wc.x = x;
 		c->y = wc.y = y;
 		c->w = wc.width = w;
 		c->h = wc.height = h;
-		wc.border_width = c->border;
+		wc.border_width = c->bw;
 		XConfigureWindow(dpy, c->win,
 				CWX|CWY|CWWidth|CWHeight|CWBorderWidth, &wc);
 		configure(c);
@@ -1256,15 +1165,15 @@ resizemouse(Client *c) {
 	ocx = c->x;
 	ocy = c->y;
 	if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
-			None, cursor[CurResize], CurrentTime) != GrabSuccess)
+	None, cursor[CurResize], CurrentTime) != GrabSuccess)
 		return;
-	XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->border - 1, c->h + c->border - 1);
+	XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->bw - 1, c->h + c->bw - 1);
 	for(;;) {
 		XMaskEvent(dpy, MOUSEMASK|ExposureMask|SubstructureRedirectMask , &ev);
 		switch(ev.type) {
 		case ButtonRelease:
 			XWarpPointer(dpy, None, c->win, 0, 0, 0, 0,
-					c->w + c->border - 1, c->h + c->border - 1);
+					c->w + c->bw - 1, c->h + c->bw - 1);
 			XUngrabPointer(dpy, CurrentTime);
 			while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
 			return;
@@ -1275,13 +1184,16 @@ resizemouse(Client *c) {
 			break;
 		case MotionNotify:
 			XSync(dpy, False);
-			if((nw = ev.xmotion.x - ocx - 2 * c->border + 1) <= 0)
-				nw = 1;
-			if((nh = ev.xmotion.y - ocy - 2 * c->border + 1) <= 0)
-				nh = 1;
-			if(!c->isfloating && (lt->arrange != floating) && (abs(nw - c->w) > SNAP || abs(nh - c->h) > SNAP))
-				togglefloating(NULL);
-			if((lt->arrange == floating) || c->isfloating)
+			nw = MAX(ev.xmotion.x - ocx - 2 * c->bw + 1, 1);
+			nh = MAX(ev.xmotion.y - ocy - 2 * c->bw + 1, 1);
+
+			if(snap && nw >= wx && nw <= wx + ww
+			        && nh >= wy && nh <= wy + wh) {
+				if(!c->isfloating && lt->arrange
+				   && (abs(nw - c->w) > snap || abs(nh - c->h) > snap))
+					togglefloating(NULL);
+			}
+			if(!lt->arrange || c->isfloating)
 				resize(c, c->x, c->y, nw, nh, True);
 			break;
 		}
@@ -1297,21 +1209,16 @@ restack(void) {
 	drawbar();
 	if(!sel)
 		return;
-	if(sel->isfloating || (lt->arrange == floating))
+	if(sel->isfloating || !lt->arrange)
 		XRaiseWindow(dpy, sel->win);
-	if(lt->arrange != floating) {
+	if(lt->arrange) {
 		wc.stack_mode = Below;
 		wc.sibling = barwin;
-		if(!sel->isfloating) {
-			XConfigureWindow(dpy, sel->win, CWSibling|CWStackMode, &wc);
-			wc.sibling = sel->win;
-		}
-		for(c = nexttiled(clients); c; c = nexttiled(c->next)) {
-			if(c == sel)
-				continue;
-			XConfigureWindow(dpy, c->win, CWSibling|CWStackMode, &wc);
-			wc.sibling = c->win;
-		}
+		for(c = stack; c; c = c->snext)
+			if(!c->isfloating && isvisible(c)) {
+				XConfigureWindow(dpy, c->win, CWSibling|CWStackMode, &wc);
+				wc.sibling = c->win;
+			}
 	}
 	XSync(dpy, False);
 	while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
@@ -1387,7 +1294,7 @@ scan(void) {
 	if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
 		for(i = 0; i < num; i++) {
 			if(!XGetWindowAttributes(dpy, wins[i], &wa)
-					|| wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
+			|| wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
 				continue;
 			if(wa.map_state == IsViewable || getstate(wins[i]) == IconicState)
 				manage(wins[i], &wa);
@@ -1396,7 +1303,7 @@ scan(void) {
 			if(!XGetWindowAttributes(dpy, wins[i], &wa))
 				continue;
 			if(XGetTransientForHint(dpy, wins[i], &d1)
-					&& (wa.map_state == IsViewable || getstate(wins[i]) == IconicState))
+			&& (wa.map_state == IsViewable || getstate(wins[i]) == IconicState))
 				manage(wins[i], &wa);
 		}
 	}
@@ -1412,63 +1319,36 @@ setclientstate(Client *c, long state) {
 			PropModeReplace, (unsigned char *)data, 2);
 }
 
+/* arg > 1.0 will set mfact absolutly */
 void
-setlayout(const char *arg) {
-	unsigned int i;
-
-	if(!arg) {
-		lt++;
-		if(lt == &layouts[LENGTH(layouts)])
-			lt = &layouts[0];
-	}
-	else {
-		for(i = 0; i < LENGTH(layouts); i++)
-			if(!strcmp(arg, layouts[i].symbol))
-				break;
-		if(i == LENGTH(layouts))
-			return;
-		lt = &layouts[i];
-	}
-	if(sel)
-		arrange();
-	else
-		drawbar();
-}
-
-void
-setmwfact(const char *arg) {
-	double delta;
+setmfact(void *arg) {
+	double d = *((double*) arg);
 
-	if(!domwfact)
+	if(!d || lt->arrange != tile)
 		return;
-	/* arg handling, manipulate mwfact */
-	if(arg == NULL)
-		mwfact = MWFACT;
-	else if(sscanf(arg, "%lf", &delta) == 1) {
-		if(arg[0] == '+' || arg[0] == '-')
-			mwfact += delta;
-		else
-			mwfact = delta;
-		if(mwfact < 0.1)
-			mwfact = 0.1;
-		else if(mwfact > 0.9)
-			mwfact = 0.9;
-	}
+	d = d < 1.0 ? d + mfact : d - 1.0;
+	if(d < 0.1 || d > 0.9)
+		return;
+	mfact = d;
+	updatetilegeom();
 	arrange();
 }
 
 void
 setup(void) {
-	unsigned int i;
+	unsigned int i, w;
 	XSetWindowAttributes wa;
 
 	/* init screen */
 	screen = DefaultScreen(dpy);
 	root = RootWindow(dpy, screen);
+	initfont(FONT);
 	sx = 0;
 	sy = 0;
 	sw = DisplayWidth(dpy, screen);
 	sh = DisplayHeight(dpy, screen);
+	bh = dc.font.height + 2;
+	updategeom();
 
 	/* init atoms */
 	wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
@@ -1483,11 +1363,6 @@ setup(void) {
 	cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
 	cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
 
-#ifdef XINERAMA
-	if(XineramaIsActive(dpy))
-		info = XineramaQueryScreens(dpy, &xscreens);
-#endif
-
 	/* init appearance */
 	dc.norm[ColBorder] = getcolor(NORMBORDERCOLOR);
 	dc.norm[ColBG] = getcolor(NORMBGCOLOR);
@@ -1496,40 +1371,27 @@ setup(void) {
 	dc.sel[ColBG] = getcolor(SELBGCOLOR);
 	dc.sel[ColFG] = getcolor(SELFGCOLOR);
 	initfont(FONT);
-	dc.h = bh = dc.font.height + 2;
+	dc.h = bh;
 	dc.drawable = XCreatePixmap(dpy, root, DisplayWidth(dpy, screen), bh, DefaultDepth(dpy, screen));
 	dc.gc = XCreateGC(dpy, root, 0, 0);
 	XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
 	if(!dc.font.set)
 		XSetFont(dpy, dc.gc, dc.font.xfont->fid);
 
-	/* init tags */
-	seltags = emallocz(TAGSZ);
-	prevtags = emallocz(TAGSZ);
-	seltags[0] = prevtags[0] = True;
-
-	/* init layouts */
-	mwfact = MWFACT;
-	lt = &layouts[0];
-
-	/* TODO: Xinerama hints ? */
 	/* init bar */
-	for(blw = i = 0; i < LENGTH(layouts); i++) {
-		i = textw(layouts[i].symbol);
-		if(i > blw)
-			blw = i;
+	for(blw = i = 0; LENGTH(layouts) > 1 && i < LENGTH(layouts); i++) {
+		w = textw(layouts[i].symbol);
+		blw = MAX(blw, w);
 	}
 
-	bpos = BARPOS;
 	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);
+	barwin = XCreateWindow(dpy, root, bx, by, bw, bh, 0, DefaultDepth(dpy, screen),
+			CopyFromParent, DefaultVisual(dpy, screen),
+			CWOverrideRedirect|CWBackPixmap|CWEventMask, &wa);
 	XDefineCursor(dpy, barwin, cursor[CurNormal]);
-	updatebarpos();
 	XMapRaised(dpy, barwin);
 	strcpy(stext, "dwm-"VERSION);
 	drawbar();
@@ -1550,13 +1412,11 @@ setup(void) {
 }
 
 void
-spawn(const char *arg) {
+spawn(void *arg) {
 	static char *shell = NULL;
 
 	if(!shell && !(shell = getenv("SHELL")))
 		shell = "/bin/sh";
-	if(!arg)
-		return;
 	/* The double-fork construct avoids zombie processes and keeps the code
 	 * clean from stupid signal handlers. */
 	if(fork() == 0) {
@@ -1564,8 +1424,8 @@ spawn(const char *arg) {
 			if(dpy)
 				close(ConnectionNumber(dpy));
 			setsid();
-			execl(shell, shell, "-c", arg, (char *)NULL);
-			fprintf(stderr, "dwm: execl '%s -c %s'", shell, arg);
+			execl(shell, shell, "-c", (char *)arg, (char *)NULL);
+			fprintf(stderr, "dwm: execl '%s -c %s'", shell, (char *)arg);
 			perror(" failed");
 		}
 		exit(0);
@@ -1574,15 +1434,11 @@ spawn(const char *arg) {
 }
 
 void
-tag(const char *arg) {
-	unsigned int i;
-
-	if(!sel)
-		return;
-	for(i = 0; i < LENGTH(tags); i++)
-		sel->tags[i] = (NULL == arg);
-	sel->tags[idxoftag(arg)] = True;
-	arrange();
+tag(void *arg) {
+	if(sel && *(int *)arg & TAGMASK) {
+		sel->tags = *(int *)arg & TAGMASK;
+		arrange();
+	}
 }
 
 unsigned int
@@ -1603,60 +1459,61 @@ textw(const char *text) {
 
 void
 tile(void) {
-	unsigned int i, n, nx, ny, nw, nh, mw, th;
-	Client *c, *mc;
-
-	domwfact = dozoom = True;
-	nx = wax;
-	ny = way;
-	nw = 0;
-	for(n = 0, c = nexttiled(clients); c; c = nexttiled(c->next))
-		n++;
-
-	/* window geoms */
-	mw = (n == 1) ? waw : mwfact * waw;
-	th = (n > 1) ? wah / (n - 1) : 0;
-	if(n > 1 && th < bh)
-		th = wah;
-
-	for(i = 0, c = mc = nexttiled(clients); c; c = nexttiled(c->next)) {
-		if(i == 0) { /* master */
-			nw = mw - 2 * c->border;
-			nh = wah - 2 * c->border;
-		}
-		else {  /* tile window */
-			if(i == 1) {
-				ny = way;
-				nx += mc->w + 2 * mc->border;
-				nw = waw - mw - 2 * c->border;
-			}
-			if(i + 1 == n) /* remainder */
-				nh = (way + wah) - ny - 2 * c->border;
-			else
-				nh = th - 2 * c->border;
-		}
-		resize(c, nx, ny, nw, nh, RESIZEHINTS);
-		if((RESIZEHINTS) && ((c->h < bh) || (c->h > nh) || (c->w < bh) || (c->w > nw)))
-			/* client doesn't accept size constraints */
-			resize(c, nx, ny, nw, nh, False);
-		if(n > 1 && th != wah)
-			ny = c->y + c->h + 2 * c->border;
-		i++;
+	int x, y, h, w;
+	unsigned int i, n;
+	Client *c;
+
+	for(n = 0, c = nextunfloating(clients); c; c = nextunfloating(c->next), n++);
+	if(n == 0)
+		return;
+
+	/* master */
+	c = nextunfloating(clients);
+
+	if(n == 1)
+		tileresize(c, wx, wy, ww - 2 * c->bw, wh - 2 * c->bw);
+	else
+		tileresize(c, mx, my, mw - 2 * c->bw, mh - 2 * c->bw);
+
+	if(--n == 0)
+		return;
+
+	/* tile stack */
+	x = (tx > c->x + c->w) ? c->x + c->w + 2 * c->bw : tw;
+	y = ty;
+	w = (tx > c->x + c->w) ? wx + ww - x : tw;
+	h = th / n;
+	if(h < bh)
+		h = th;
+
+	for(i = 0, c = nextunfloating(c->next); c; c = nextunfloating(c->next), i++) {
+		if(i + 1 == n) /* remainder */
+			tileresize(c, x, y, w - 2 * c->bw, (ty + th) - y - 2 * c->bw);
+		else
+			tileresize(c, x, y, w - 2 * c->bw, h - 2 * c->bw);
+		if(h != th)
+			y = c->y + c->h + 2 * c->bw;
 	}
 }
 
 void
-togglebar(const char *arg) {
-	if(bpos == BarOff)
-		bpos = (BARPOS == BarOff) ? BarTop : BARPOS;
-	else
-		bpos = BarOff;
-	updatebarpos();
+tileresize(Client *c, int x, int y, int w, int h) {
+	resize(c, x, y, w, h, resizehints);
+	if(resizehints && ((c->h < bh) || (c->h > h) || (c->w < bh) || (c->w > w)))
+		/* client doesn't accept size constraints */
+		resize(c, x, y, w, h, False);
+}
+
+void
+togglebar(void *arg) {
+	showbar = !showbar;
+	updategeom();
+	updatebar();
 	arrange();
 }
 
 void
-togglefloating(const char *arg) {
+togglefloating(void *arg) {
 	if(!sel)
 		return;
 	sel->isfloating = !sel->isfloating;
@@ -1666,31 +1523,49 @@ togglefloating(const char *arg) {
 }
 
 void
-toggletag(const char *arg) {
-	unsigned int i, j;
+togglelayout(void *arg) {
+	unsigned int i;
 
-	if(!sel)
-		return;
-	i = idxoftag(arg);
-	if(conflicts(sel, i))
-		return;
-	sel->tags[i] = !sel->tags[i];
-	for(j = 0; j < LENGTH(tags) && !sel->tags[j]; j++);
-	if(j == LENGTH(tags))
-		sel->tags[i] = True; /* at least one tag must be enabled */
-	arrange();
+	if(!arg) {
+		if(++lt == &layouts[LENGTH(layouts)])
+			lt = &layouts[0];
+	}
+	else {
+		for(i = 0; i < LENGTH(layouts); i++)
+			if(!strcmp((char *)arg, layouts[i].symbol))
+				break;
+		if(i == LENGTH(layouts))
+			return;
+		lt = &layouts[i];
+	}
+	if(sel)
+		arrange();
+	else
+		drawbar();
 }
 
 void
-toggleview(const char *arg) {
-	unsigned int i, j;
+toggletag(void *arg) {
+	int i, m = *(int *)arg;
+	for(i = 0; i < sizeof(int) * 8; i++)
+		fputc(m & 1 << i ? '1' : '0', stdout);
+	puts("");
+	for(i = 0; i < sizeof(int) * 8; i++)
+		fputc(TAGMASK & 1 << i ? '1' : '0', stdout);
+	puts("aaa");
 
-	i = idxoftag(arg);
-	seltags[i] = !seltags[i];
-	for(j = 0; j < LENGTH(tags) && !seltags[j]; j++);
-	if(j == LENGTH(tags))
-		seltags[i] = True; /* at least one tag must be viewed */
-	arrange();
+	if(sel && (sel->tags ^ ((*(int *)arg) & TAGMASK))) {
+		sel->tags ^= (*(int *)arg) & TAGMASK;
+		arrange();
+	}
+}
+
+void
+toggleview(void *arg) {
+	if((tagset[seltags] ^ ((*(int *)arg) & TAGMASK))) {
+		tagset[seltags] ^= (*(int *)arg) & TAGMASK;
+		arrange();
+	}
 }
 
 void
@@ -1705,7 +1580,7 @@ void
 unmanage(Client *c) {
 	XWindowChanges wc;
 
-	wc.border_width = c->oldborder;
+	wc.border_width = c->oldbw;
 	/* The server grab construct avoids race conditions. */
 	XGrabServer(dpy);
 	XSetErrorHandler(xerrordummy);
@@ -1716,7 +1591,6 @@ unmanage(Client *c) {
 		focus(NULL);
 	XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
 	setclientstate(c, WithdrawnState);
-	free(c->tags);
 	free(c);
 	XSync(dpy, False);
 	XSetErrorHandler(xerror);
@@ -1734,29 +1608,46 @@ unmapnotify(XEvent *e) {
 }
 
 void
-updatebarpos(void) {
-	XEvent ev;
+updatebar(void) {
+	if(dc.drawable != 0)
+		XFreePixmap(dpy, dc.drawable);
+	dc.drawable = XCreatePixmap(dpy, root, bw, bh, DefaultDepth(dpy, screen));
+	XMoveResizeWindow(dpy, barwin, bx, by, bw, bh);
+}
 
-	wax = sx;
-	way = sy;
-	wah = sh;
-	waw = sw;
-	switch(bpos) {
-	default:
-		wah -= bh;
-		way += bh;
-		XMoveWindow(dpy, barwin, sx, sy);
-		break;
-	case BarBot:
-		wah -= bh;
-		XMoveWindow(dpy, barwin, sx, sy + wah);
-		break;
-	case BarOff:
-		XMoveWindow(dpy, barwin, sx, sy - bh);
-		break;
+void
+updategeom(void) {
+	int i;
+#ifdef XINERAMA
+	XineramaScreenInfo *info = NULL;
+
+	/* window area geometry */
+	if(XineramaIsActive(dpy)) {
+		info = XineramaQueryScreens(dpy, &i);
+		wx = info[0].x_org;
+		wy = showbar && topbar ? info[0].y_org + bh : info[0].y_org;
+		ww = info[0].width;
+		wh = showbar ? info[0].height - bh : info[0].height;
+		XFree(info);
 	}
-	XSync(dpy, False);
-	while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
+	else
+#endif
+	{
+		wx = sx;
+		wy = showbar && topbar ? sy + bh : sy;
+		ww = sw;
+		wh = showbar ? sh - bh : sh;
+	}
+
+	/* bar geometry */
+	bx = wx;
+	by = showbar ? (topbar ? wy - bh : wy + wh) : -bh;
+	bw = ww;
+
+	/* update layout geometries */
+	for(i = 0; i < LENGTH(layouts); i++)
+		if(layouts[i].updategeom)
+			layouts[i].updategeom();
 }
 
 void
@@ -1812,6 +1703,21 @@ updatesizehints(Client *c) {
 }
 
 void
+updatetilegeom(void) {
+	/* master area geometry */
+	mx = wx;
+	my = wy;
+	mw = mfact * ww;
+	mh = wh;
+
+	/* tile area geometry */
+	tx = mx + mw;
+	ty = wy;
+	tw = ww - mw;
+	th = wh;
+}
+
+void
 updatetitle(Client *c) {
 	if(!gettextprop(c->win, netatom[NetWMName], c->name, sizeof c->name))
 		gettextprop(c->win, wmatom[WMName], c->name, sizeof c->name);
@@ -1822,33 +1728,26 @@ updatewmhints(Client *c) {
 	XWMHints *wmh;
 
 	if((wmh = XGetWMHints(dpy, c->win))) {
-		c->isurgent = (wmh->flags & XUrgencyHint) ? True : False;
+		if(c == sel)
+			sel->isurgent = False;
+		else
+			c->isurgent = (wmh->flags & XUrgencyHint) ? True : False;
 		XFree(wmh);
 	}
 }
 
-
 void
-view(const char *arg) {
-	unsigned int i;
-
-	for(i = 0; i < LENGTH(tags); i++)
-		tmp[i] = (NULL == arg);
-	tmp[idxoftag(arg)] = True;
-
-	if(memcmp(seltags, tmp, TAGSZ) != 0) {
-		memcpy(prevtags, seltags, TAGSZ);
-		memcpy(seltags, tmp, TAGSZ);
+view(void *arg) {
+	if(*(int *)arg & TAGMASK) {
+		seltags ^= 1; /* toggle sel tagset */
+		tagset[seltags] = *(int *)arg & TAGMASK;
 		arrange();
 	}
 }
 
 void
-viewprevtag(const char *arg) {
-
-	memcpy(tmp, seltags, TAGSZ);
-	memcpy(seltags, prevtags, TAGSZ);
-	memcpy(prevtags, tmp, TAGSZ);
+viewprevtag(void *arg) {
+	seltags ^= 1; /* toggle sel tagset */
 	arrange();
 }
 
@@ -1863,11 +1762,12 @@ xerror(Display *dpy, XErrorEvent *ee) {
 	|| (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_GrabButton && ee->error_code == BadAccess)
 	|| (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);
+			ee->request_code, ee->error_code);
 	return xerrorxlib(dpy, ee); /* may call exit */
 }
 
@@ -1885,17 +1785,17 @@ xerrorstart(Display *dpy, XErrorEvent *ee) {
 }
 
 void
-zoom(const char *arg) {
+zoom(void *arg) {
 	Client *c = sel;
 
-	if(!sel || !dozoom || sel->isfloating)
-		return;
-	if(c == nexttiled(clients))
-		if(!(c = nexttiled(c->next)))
+	if(c == nextunfloating(clients))
+		if(!c || !(c = nextunfloating(c->next)))
 			return;
-	detach(c);
-	attach(c);
-	focus(c);
+	if(lt->arrange == tile && !sel->isfloating) {
+		detach(c);
+		attach(c);
+		focus(c);
+	}
 	arrange();
 }