X-Git-Url: https://git.xinqibao.xyz/dwm.git/blobdiff_plain/cdb8e274531e5e82818d90e2cc4e3b46e7fe8eb6..a9e145fe6d8af4848e6706131ac41e99003cd997:/dwm.c

diff --git a/dwm.c b/dwm.c
index 4c001fa..613a029 100644
--- a/dwm.c
+++ b/dwm.c
@@ -1,4 +1,3 @@
-//#define XINULATOR /* debug, simulates dual head */
 /* See LICENSE file for copyright and license details.
  *
  * dynamic window manager is designed like any other X client as well. It is
@@ -12,9 +11,9 @@
  * 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
- * linked client list, the focus history is remembered through a global
- * stack list. Each client contains a bit array to indicate the tags of a
+ * set the override_redirect flag.  Clients are organized in a linked client
+ * list on each monitor, the focus history is remembered through a stack list
+ * on each monitor. Each client contains a bit array to indicate the tags of a
  * client.
  *
  * Keys and tagging rules are organized as arrays and defined in config.h.
@@ -125,7 +124,7 @@ struct Monitor {
 	int screen_number;
 	float mfact;
 	int by, btx;          /* bar geometry */
-	int my, mh;           /* vertical screen size*/
+	int mx, my, mw, mh;   /* screen size */
 	int wx, wy, ww, wh;   /* window area  */
 	unsigned int seltags;
 	unsigned int sellt;
@@ -149,7 +148,7 @@ typedef struct {
 
 /* function declarations */
 static void applyrules(Client *c);
-static Bool applysizehints(Client *c, int *x, int *y, int *w, int *h);
+static Bool applysizehints(Client *c, int *x, int *y, int *w, int *h, Bool interact);
 static void arrange(void);
 static void attach(Client *c);
 static void attachstack(Client *c);
@@ -165,17 +164,19 @@ static void destroynotify(XEvent *e);
 static void detach(Client *c);
 static void detachstack(Client *c);
 static void die(const char *errstr, ...);
+static Monitor *dirtomon(int dir);
 static void drawbar(Monitor *m);
-static void drawbars();
+static void drawbars(void);
 static void drawsquare(Bool filled, Bool empty, Bool invert, unsigned long col[ColLast]);
 static void drawtext(const char *text, unsigned long col[ColLast], Bool invert);
 static void enternotify(XEvent *e);
 static void expose(XEvent *e);
 static void focus(Client *c);
 static void focusin(XEvent *e);
+static void focusmon(const Arg *arg);
 static void focusstack(const Arg *arg);
-static Client *getclient(Window w);
 static unsigned long getcolor(const char *colstr);
+static Bool getrootpointer(int *x, int *y);
 static long getstate(Window w);
 static Bool gettextprop(Window w, Atom atom, char *text, unsigned int size);
 static void grabbuttons(Client *c, Bool focused);
@@ -190,13 +191,15 @@ static void maprequest(XEvent *e);
 static void monocle(Monitor *m);
 static void movemouse(const Arg *arg);
 static Client *nexttiled(Client *c);
+static Monitor *pointertomon(int x, int y);
 static void propertynotify(XEvent *e);
 static void quit(const Arg *arg);
-static void resize(Client *c, int x, int y, int w, int h);
+static void resize(Client *c, int x, int y, int w, int h, Bool interact);
 static void resizemouse(const Arg *arg);
 static void restack(Monitor *m);
 static void run(void);
 static void scan(void);
+static void sendmon(Client *c, Monitor *m);
 static void setclientstate(Client *c, long state);
 static void setlayout(const Arg *arg);
 static void setmfact(const Arg *arg);
@@ -205,12 +208,14 @@ static void showhide(Client *c);
 static void sigchld(int signal);
 static void spawn(const Arg *arg);
 static void tag(const Arg *arg);
+static void tagmon(const Arg *arg);
 static int textnw(const char *text, unsigned int len);
 static void tile(Monitor *);
 static void togglebar(const Arg *arg);
 static void togglefloating(const Arg *arg);
 static void toggletag(const Arg *arg);
 static void toggleview(const Arg *arg);
+static void unfocus(Client *c);
 static void unmanage(Client *c);
 static void unmapnotify(XEvent *e);
 static void updategeom(void);
@@ -222,19 +227,17 @@ static void updatestatus(void);
 static void updatetitle(Client *c);
 static void updatewmhints(Client *c);
 static void view(const Arg *arg);
+static Client *wintoclient(Window w);
+static Monitor *wintomon(Window w);
 static int xerror(Display *dpy, XErrorEvent *ee);
 static int xerrordummy(Display *dpy, XErrorEvent *ee);
 static int xerrorstart(Display *dpy, XErrorEvent *ee);
 static void zoom(const Arg *arg);
-#ifdef XINERAMA
-static void focusmon(const Arg *arg);
-static void tagmon(const Arg *arg);
-#endif /* XINERAMA */
 
 /* variables */
 static char stext[256];
 static int screen;
-static int sx, sy, sw, sh;   /* X display screen geometry x, y, width, height */
+static int sw, sh;   /* X display screen geometry x, y, width, height */
 static int bh, blw = 0;      /* bar geometry */
 static int (*xerrorxlib)(Display *, XErrorEvent *);
 static unsigned int numlockmask = 0;
@@ -295,35 +298,45 @@ applyrules(Client *c) {
 }
 
 Bool
-applysizehints(Client *c, int *x, int *y, int *w, int *h) {
+applysizehints(Client *c, int *x, int *y, int *w, int *h, Bool interact) {
 	Bool baseismin;
+	Monitor *m = c->mon;
 
 	/* set minimum possible */
 	*w = MAX(1, *w);
 	*h = MAX(1, *h);
 
-	if(*x > sx + sw)
-		*x = sw - WIDTH(c);
-	if(*y > sy + sh)
-		*y = sh - HEIGHT(c);
-	if(*x + *w + 2 * c->bw < sx)
-		*x = sx;
-	if(*y + *h + 2 * c->bw < sy)
-		*y = sy;
+	if(interact) {
+		if(*x > sw)
+			*x = sw - WIDTH(c);
+		if(*y > sh)
+			*y = sh - HEIGHT(c);
+		if(*x + *w + 2 * c->bw < 0)
+			*x = 0;
+		if(*y + *h + 2 * c->bw < 0)
+			*y = 0;
+	}
+	else {
+		if(*x > m->mx + m->mw)
+			*x = m->mx + m->mw - WIDTH(c);
+		if(*y > m->my + m->mh)
+			*y = m->my + m->mh - HEIGHT(c);
+		if(*x + *w + 2 * c->bw < m->mx)
+			*x = m->mx;
+		if(*y + *h + 2 * c->bw < m->my)
+			*y = m->my;
+	}
 	if(*h < bh)
 		*h = bh;
 	if(*w < bh)
 		*w = bh;
-
 	if(resizehints || c->isfloating) {
 		/* see last two sentences in ICCCM 4.1.2.3 */
 		baseismin = c->basew == c->minw && c->baseh == c->minh;
-
 		if(!baseismin) { /* temporarily remove base dimensions */
 			*w -= c->basew;
 			*h -= c->baseh;
 		}
-
 		/* adjust for aspect limits */
 		if(c->mina > 0 && c->maxa > 0) {
 			if(c->maxa < (float)*w / *h)
@@ -331,28 +344,22 @@ applysizehints(Client *c, int *x, int *y, int *w, int *h) {
 			else if(c->mina < (float)*h / *w)
 				*h = *w * c->mina;
 		}
-
 		if(baseismin) { /* increment calculation requires this */
 			*w -= c->basew;
 			*h -= c->baseh;
 		}
-
 		/* adjust for increment value */
 		if(c->incw)
 			*w -= *w % c->incw;
 		if(c->inch)
 			*h -= *h % c->inch;
-
 		/* restore base dimensions */
 		*w += c->basew;
 		*h += c->baseh;
-
 		*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);
 	}
@@ -391,9 +398,16 @@ buttonpress(XEvent *e) {
 	unsigned int i, x, click;
 	Arg arg = {0};
 	Client *c;
+	Monitor *m;
 	XButtonPressedEvent *ev = &e->xbutton;
 
 	click = ClkRootWin;
+	/* focus monitor if necessary */
+	if((m = wintomon(ev->window)) && m != selmon) {
+		unfocus(selmon->sel);
+		selmon = m;
+		focus(NULL);
+	}
 	if(ev->window == selmon->barwin && ev->x >= selmon->btx) {
 		i = 0;
 		x = selmon->btx;
@@ -411,11 +425,10 @@ buttonpress(XEvent *e) {
 		else
 			click = ClkWinTitle;
 	}
-	else if((c = getclient(ev->window))) {
+	else if((c = wintoclient(ev->window))) {
 		focus(c);
 		click = ClkClientWin;
 	}
-
 	for(i = 0; i < LENGTH(buttons); i++)
 		if(click == buttons[i].click && buttons[i].func && buttons[i].button == ev->button
 		   && CLEANMASK(buttons[i].mask) == CLEANMASK(ev->state))
@@ -426,7 +439,6 @@ void
 checkotherwm(void) {
 	otherwm = False;
 	xerrorxlib = XSetErrorHandler(xerrorstart);
-
 	/* this causes an error if some other window manager is running */
 	XSelectInput(dpy, DefaultRootWindow(dpy), SubstructureRedirectMask);
 	XSync(dpy, False);
@@ -444,8 +456,6 @@ cleanup(void) {
 
 	view(&a);
 	lt[selmon->sellt] = &foo;
-
-	/* TODO: consider simplifying cleanup code of the stack, perhaps do that in cleanmons() ? */
 	for(m = mons; m; m = m->next)
 		while(m->stack)
 			unmanage(m->stack);
@@ -529,25 +539,27 @@ configurenotify(XEvent *e) {
 void
 configurerequest(XEvent *e) {
 	Client *c;
+	Monitor *m;
 	XConfigureRequestEvent *ev = &e->xconfigurerequest;
 	XWindowChanges wc;
 
-	if((c = getclient(ev->window))) {
+	if((c = wintoclient(ev->window))) {
 		if(ev->value_mask & CWBorderWidth)
 			c->bw = ev->border_width;
 		else if(c->isfloating || !lt[selmon->sellt]->arrange) {
+			m = c->mon;
 			if(ev->value_mask & CWX)
-				c->x = sx + ev->x;
+				c->x = m->mx + ev->x;
 			if(ev->value_mask & CWY)
-				c->y = sy + ev->y;
+				c->y = m->my + ev->y;
 			if(ev->value_mask & CWWidth)
 				c->w = ev->width;
 			if(ev->value_mask & CWHeight)
 				c->h = ev->height;
-			if((c->x - sx + c->w) > sw && c->isfloating)
-				c->x = sx + (sw / 2 - c->w / 2); /* center in x direction */
-			if((c->y - sy + c->h) > sh && c->isfloating)
-				c->y = sy + (sh / 2 - c->h / 2); /* center in y direction */
+			if((c->x - m->mx + c->w) > m->mw && c->isfloating)
+				c->x = m->mx + (m->mw / 2 - c->w / 2); /* center in x direction */
+			if((c->y - m->my + c->h) > m->mh && c->isfloating)
+				c->y = m->my + (m->mh / 2 - c->h / 2); /* center in y direction */
 			if((ev->value_mask & (CWX|CWY)) && !(ev->value_mask & (CWWidth|CWHeight)))
 				configure(c);
 			if(ISVISIBLE(c))
@@ -574,7 +586,7 @@ destroynotify(XEvent *e) {
 	Client *c;
 	XDestroyWindowEvent *ev = &e->xdestroywindow;
 
-	if((c = getclient(ev->window)))
+	if((c = wintoclient(ev->window)))
 		unmanage(c);
 }
 
@@ -588,10 +600,15 @@ detach(Client *c) {
 
 void
 detachstack(Client *c) {
-	Client **tc;
+	Client **tc, *t;
 
 	for(tc = &c->mon->stack; *tc && *tc != c; tc = &(*tc)->snext);
 	*tc = c->snext;
+
+	if(c == c->mon->sel) {
+		for(t = c->mon->stack; t && !ISVISIBLE(t); t = t->snext);
+		c->mon->sel = t;
+	}
 }
 
 void
@@ -604,6 +621,22 @@ die(const char *errstr, ...) {
 	exit(EXIT_FAILURE);
 }
 
+Monitor *
+dirtomon(int dir) {
+	Monitor *m = NULL;
+
+	if(dir > 0)
+		if(!(m = selmon->next))
+			m = mons;
+	else {
+		if(selmon == mons)
+			for(m = mons; m->next; m = m->next);
+		else
+			for(m = mons; m->next != selmon; m = m->next);
+	}
+	return m;
+}
+
 void
 drawbar(Monitor *m) {
 	int x;
@@ -616,18 +649,12 @@ drawbar(Monitor *m) {
 		if(c->isurgent)
 			urg |= c->tags;
 	}
-
 	dc.x = 0;
-#ifdef XINERAMA
-	{
-		char buf[2];
-		buf[0] = m->screen_number + '0';
-		buf[1] = '\0';
-		dc.w = TEXTW(buf);
-		drawtext(buf, selmon == m ? dc.sel : dc.norm, True);
+	if(mons->next) { /* more than a single monitor */
+		dc.w = TEXTW(monsyms[m->screen_number]);
+		drawtext(monsyms[m->screen_number], selmon == m ? dc.sel : dc.norm, False);
 		dc.x += dc.w;
 	}
-#endif /* XINERAMA */
 	m->btx = dc.x;
 	for(i = 0; i < LENGTH(tags); i++) {
 		dc.w = TEXTW(tags[i]);
@@ -644,7 +671,7 @@ drawbar(Monitor *m) {
 	}
 	else
 		x = dc.x;
-	if(m == selmon) {
+	if(m == selmon) { /* status is only drawn on selected monitor */
 		dc.w = TEXTW(stext);
 		dc.x = m->ww - dc.w;
 		if(dc.x < x) {
@@ -652,27 +679,25 @@ drawbar(Monitor *m) {
 			dc.w = m->ww - x;
 		}
 		drawtext(stext, dc.norm, False);
-		if((dc.w = dc.x - x) > bh) {
-			dc.x = x;
-			if(selmon->sel) {
-				drawtext(selmon->sel->name, dc.sel, False);
-				drawsquare(selmon->sel->isfixed, selmon->sel->isfloating, False, dc.sel);
-			}
-			else
-				drawtext(NULL, dc.norm, False);
-		}
 	}
-	else {
+	else
+		dc.x = m->ww;
+	if((dc.w = dc.x - x) > bh) {
 		dc.x = x;
-		dc.w = m->ww - x;
-		drawtext(NULL, dc.norm, False);
+		if(m->sel) {
+			col = m == selmon ? dc.sel : dc.norm;
+			drawtext(m->sel->name, col, False);
+			drawsquare(m->sel->isfixed, m->sel->isfloating, False, col);
+		}
+		else
+			drawtext(NULL, dc.norm, False);
 	}
 	XCopyArea(dpy, dc.drawable, m->barwin, dc.gc, 0, 0, m->ww, bh, 0, 0);
 	XSync(dpy, False);
 }
 
 void
-drawbars() {
+drawbars(void) {
 	Monitor *m;
 
 	for(m = mons; m; m = m->next)
@@ -731,11 +756,16 @@ drawtext(const char *text, unsigned long col[ColLast], Bool invert) {
 void
 enternotify(XEvent *e) {
 	Client *c;
+	Monitor *m;
 	XCrossingEvent *ev = &e->xcrossing;
 
 	if((ev->mode != NotifyNormal || ev->detail == NotifyInferior) && ev->window != root)
 		return;
-	if((c = getclient(ev->window)))
+	if((m = wintomon(ev->window)) && m != selmon) {
+		unfocus(selmon->sel);
+		selmon = m;
+	}
+	if((c = wintoclient(ev->window)))
 		focus(c);
 	else
 		focus(NULL);
@@ -746,23 +776,19 @@ expose(XEvent *e) {
 	Monitor *m;
 	XExposeEvent *ev = &e->xexpose;
 
-	if(ev->count == 0)
-		for(m = mons; m; m = m->next)
-			if(ev->window == m->barwin) {
-				drawbar(m);
-				break;
-			}
+	if(ev->count == 0 && (m = wintomon(ev->window)))
+		drawbar(m);
 }
 
 void
 focus(Client *c) {
 	if(!c || !ISVISIBLE(c))
 		for(c = selmon->stack; c && !ISVISIBLE(c); c = c->snext);
-	if(selmon->sel && selmon->sel != c) {
-		grabbuttons(selmon->sel, False);
-		XSetWindowBorder(dpy, selmon->sel->win, dc.norm[ColBorder]);
-	}
+	if(selmon->sel)
+		unfocus(selmon->sel);
 	if(c) {
+		if(c->mon != selmon)
+			selmon = c->mon;
 		if(c->isurgent)
 			clearurgent(c);
 		detachstack(c);
@@ -785,21 +811,17 @@ focusin(XEvent *e) { /* there are some broken focus acquiring clients */
 		XSetInputFocus(dpy, selmon->sel->win, RevertToPointerRoot, CurrentTime);
 }
 
-#ifdef XINERAMA
 void
 focusmon(const Arg *arg) {
-	unsigned int i;
-	Monitor *m; 
+	Monitor *m = NULL;
 
-	for(i = 0, m = mons; m; m = m->next, i++)
-		if(i == arg->ui) {
-			selmon = m;
-			focus(NULL);
-			drawbars();
-			break;
-		}
+	if(!mons->next)
+		return;
+	m = dirtomon(arg->i);
+	unfocus(selmon->sel);
+	selmon = m;
+	focus(NULL);
 }
-#endif /* XINERAMA */
 
 void
 focusstack(const Arg *arg) {
@@ -827,16 +849,6 @@ focusstack(const Arg *arg) {
 	}
 }
 
-Client *
-getclient(Window w) {
-	Client *c = NULL;
-	Monitor *m;
-
-	for(m = mons; m; m = m->next)
-		for(c = m->clients; c && c->win != w; c = c->next);
-	return c;
-}
-
 unsigned long
 getcolor(const char *colstr) {
 	Colormap cmap = DefaultColormap(dpy, screen);
@@ -847,6 +859,15 @@ getcolor(const char *colstr) {
 	return color.pixel;
 }
 
+Bool
+getrootpointer(int *x, int *y) {
+	int di;
+	unsigned int dui;
+	Window dummy;
+
+	return XQueryPointer(dpy, root, &dummy, &dummy, x, y, &di, &di, &dui);
+}
+
 long
 getstate(Window w) {
 	int format, status;
@@ -915,7 +936,7 @@ grabbuttons(Client *c, Bool focused) {
 void
 grabkeys(void) {
 	updatenumlockmask();
-	{ /* grab keys */
+	{
 		unsigned int i, j;
 		unsigned int modifiers[] = { 0, LockMask, numlockmask, numlockmask|LockMask };
 		KeyCode code;
@@ -1025,31 +1046,38 @@ manage(Window w, XWindowAttributes *wa) {
 		die("fatal: could not malloc() %u bytes\n", sizeof(Client));
 	*c = cz;
 	c->win = w;
-	c->mon = selmon;
-
+	if(XGetTransientForHint(dpy, w, &trans))
+		t = wintoclient(trans);
+	if(t) {
+		c->mon = t->mon;
+		c->tags = t->tags;
+	}
+	else {
+		c->mon = selmon;
+		applyrules(c);
+	}
 	/* geometry */
-	c->x = wa->x;
-	c->y = wa->y;
+	c->x = wa->x + c->mon->wx;
+	c->y = wa->y + c->mon->wy;
 	c->w = wa->width;
 	c->h = wa->height;
 	c->oldbw = wa->border_width;
-	if(c->w == sw && c->h == sh) {
-		c->x = sx;
-		c->y = sy;
+	if(c->w == c->mon->mw && c->h == c->mon->mh) {
+		c->x = c->mon->mx;
+		c->y = c->mon->my;
 		c->bw = 0;
 	}
 	else {
-		if(c->x + WIDTH(c) > sx + sw)
-			c->x = sx + sw - WIDTH(c);
-		if(c->y + HEIGHT(c) > sy + sh)
-			c->y = sy + sh - HEIGHT(c);
-		c->x = MAX(c->x, sx);
+		if(c->x + WIDTH(c) > c->mon->mx + c->mon->mw)
+			c->x = c->mon->mx + c->mon->mw - WIDTH(c);
+		if(c->y + HEIGHT(c) > c->mon->my + c->mon->mh)
+			c->y = c->mon->my + c->mon->mh - HEIGHT(c);
+		c->x = MAX(c->x, c->mon->mx);
 		/* only fix client y-offset, if the client center might cover the bar */
 		c->y = MAX(c->y, ((c->mon->by == 0) && (c->x + (c->w / 2) >= c->mon->wx)
-		           && (c->x + (c->w / 2) < c->mon->wx + c->mon->ww)) ? bh : sy);
+		           && (c->x + (c->w / 2) < c->mon->wx + c->mon->ww)) ? bh : c->mon->my);
 		c->bw = borderpx;
 	}
-
 	wc.border_width = c->bw;
 	XConfigureWindow(dpy, w, CWBorderWidth, &wc);
 	XSetWindowBorder(dpy, w, dc.norm[ColBorder]);
@@ -1058,12 +1086,6 @@ manage(Window w, XWindowAttributes *wa) {
 	XSelectInput(dpy, w, EnterWindowMask|FocusChangeMask|PropertyChangeMask|StructureNotifyMask);
 	grabbuttons(c, False);
 	updatetitle(c);
-	if(XGetTransientForHint(dpy, w, &trans))
-		t = getclient(trans);
-	if(t)
-		c->tags = t->tags;
-	else
-		applyrules(c);
 	if(!c->isfloating)
 		c->isfloating = trans != None || c->isfixed;
 	if(c->isfloating)
@@ -1094,7 +1116,7 @@ maprequest(XEvent *e) {
 		return;
 	if(wa.override_redirect)
 		return;
-	if(!getclient(ev->window))
+	if(!wintoclient(ev->window))
 		manage(ev->window, &wa);
 }
 
@@ -1103,15 +1125,14 @@ monocle(Monitor *m) {
 	Client *c;
 
 	for(c = nexttiled(m->clients); c; c = nexttiled(c->next))
-		resize(c, m->wx, m->wy, m->ww - 2 * c->bw, m->wh - 2 * c->bw);
+		resize(c, m->wx, m->wy, m->ww - 2 * c->bw, m->wh - 2 * c->bw, False);
 }
 
 void
 movemouse(const Arg *arg) {
-	int x, y, ocx, ocy, di, nx, ny;
-	unsigned int dui;
+	int x, y, ocx, ocy, nx, ny;
 	Client *c;
-	Window dummy;
+	Monitor *m;
 	XEvent ev;
 
 	if(!(c = selmon->sel))
@@ -1122,7 +1143,8 @@ movemouse(const Arg *arg) {
 	if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
 	None, cursor[CurMove], CurrentTime) != GrabSuccess)
 		return;
-	XQueryPointer(dpy, root, &dummy, &dummy, &x, &y, &di, &di, &dui);
+	if(!getrootpointer(&x, &y))
+		return;
 	do {
 		XMaskEvent(dpy, MOUSEMASK|ExposureMask|SubstructureRedirectMask, &ev);
 		switch (ev.type) {
@@ -1149,12 +1171,17 @@ movemouse(const Arg *arg) {
 					togglefloating(NULL);
 			}
 			if(!lt[selmon->sellt]->arrange || c->isfloating)
-				resize(c, nx, ny, c->w, c->h);
+				resize(c, nx, ny, c->w, c->h, True);
 			break;
 		}
 	}
 	while(ev.type != ButtonRelease);
 	XUngrabPointer(dpy, CurrentTime);
+	if((m = pointertomon(c->x + c->w / 2, c->y + c->h / 2)) != selmon) {
+		sendmon(c, m);
+		selmon = m;
+		focus(NULL);
+	}
 }
 
 Client *
@@ -1163,6 +1190,16 @@ nexttiled(Client *c) {
 	return c;
 }
 
+Monitor *
+pointertomon(int x, int y) {
+	Monitor *m;
+
+	for(m = mons; m; m = m->next)
+		if(INRECT(x, y, m->wx, m->wy, m->ww, m->wh))
+			return m;
+	return selmon;
+}
+
 void
 propertynotify(XEvent *e) {
 	Client *c;
@@ -1173,12 +1210,12 @@ propertynotify(XEvent *e) {
 		updatestatus();
 	else if(ev->state == PropertyDelete)
 		return; /* ignore */
-	else if((c = getclient(ev->window))) {
+	else if((c = wintoclient(ev->window))) {
 		switch (ev->atom) {
 		default: break;
 		case XA_WM_TRANSIENT_FOR:
 			XGetTransientForHint(dpy, c->win, &trans);
-			if(!c->isfloating && (c->isfloating = (getclient(trans) != NULL)))
+			if(!c->isfloating && (c->isfloating = (wintoclient(trans) != NULL)))
 				arrange();
 			break;
 		case XA_WM_NORMAL_HINTS:
@@ -1203,17 +1240,16 @@ quit(const Arg *arg) {
 }
 
 void
-resize(Client *c, int x, int y, int w, int h) {
+resize(Client *c, int x, int y, int w, int h, Bool interact) {
 	XWindowChanges wc;
 
-	if(applysizehints(c, &x, &y, &w, &h)) {
+	if(applysizehints(c, &x, &y, &w, &h, interact)) {
 		c->x = wc.x = x;
 		c->y = wc.y = y;
 		c->w = wc.width = w;
 		c->h = wc.height = h;
 		wc.border_width = c->bw;
-		XConfigureWindow(dpy, c->win,
-				CWX|CWY|CWWidth|CWHeight|CWBorderWidth, &wc);
+		XConfigureWindow(dpy, c->win, CWX|CWY|CWWidth|CWHeight|CWBorderWidth, &wc);
 		configure(c);
 		XSync(dpy, False);
 	}
@@ -1224,6 +1260,7 @@ resizemouse(const Arg *arg) {
 	int ocx, ocy;
 	int nw, nh;
 	Client *c;
+	Monitor *m;
 	XEvent ev;
 
 	if(!(c = selmon->sel))
@@ -1246,7 +1283,6 @@ resizemouse(const Arg *arg) {
 		case MotionNotify:
 			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 >= selmon->wx && nw <= selmon->wx + selmon->ww
 			        && nh >= selmon->wy && nh <= selmon->wy + selmon->wh) {
 				if(!c->isfloating && lt[selmon->sellt]->arrange
@@ -1254,7 +1290,7 @@ resizemouse(const Arg *arg) {
 					togglefloating(NULL);
 			}
 			if(!lt[selmon->sellt]->arrange || c->isfloating)
-				resize(c, c->x, c->y, nw, nh);
+				resize(c, c->x, c->y, nw, nh, True);
 			break;
 		}
 	}
@@ -1262,6 +1298,11 @@ resizemouse(const Arg *arg) {
 	XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->bw - 1, c->h + c->bw - 1);
 	XUngrabPointer(dpy, CurrentTime);
 	while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
+	if((m = pointertomon(c->x + c->w / 2, c->y + c->h / 2)) != selmon) {
+		sendmon(c, m);
+		selmon = m;
+		focus(NULL);
+	}
 }
 
 void
@@ -1326,6 +1367,21 @@ scan(void) {
 	}
 }
 
+void
+sendmon(Client *c, Monitor *m) {
+	if(c->mon == m)
+		return;
+	unfocus(c);
+	detach(c);
+	detachstack(c);
+	c->mon = m;
+	c->tags = m->tagset[m->seltags]; /* assign tags of target monitor */
+	attach(c);
+	attachstack(c);
+	focus(NULL);
+	arrange();
+}
+
 void
 setclientstate(Client *c, long state) {
 	long data[] = {state, None};
@@ -1370,27 +1426,22 @@ setup(void) {
 	screen = DefaultScreen(dpy);
 	root = RootWindow(dpy, screen);
 	initfont(font);
-	sx = 0;
-	sy = 0;
 	sw = DisplayWidth(dpy, screen);
 	sh = DisplayHeight(dpy, screen);
 	bh = dc.h = dc.font.height + 2;
 	lt[0] = &layouts[0];
 	lt[1] = &layouts[1 % LENGTH(layouts)];
 	updategeom();
-
 	/* 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);
-
 	/* init cursors */
 	cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
 	cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
 	cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
-
 	/* init appearance */
 	dc.norm[ColBorder] = getcolor(normbordercolor);
 	dc.norm[ColBG] = getcolor(normbgcolor);
@@ -1403,7 +1454,6 @@ setup(void) {
 	XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
 	if(!dc.font.set)
 		XSetFont(dpy, dc.gc, dc.font.xfont->fid);
-
 	/* init bars */
 	for(blw = i = 0; LENGTH(layouts) > 1 && i < LENGTH(layouts); i++) {
 		w = TEXTW(layouts[i].symbol);
@@ -1411,11 +1461,9 @@ setup(void) {
 	}
 	updatebars();
 	updatestatus();
-
 	/* EWMH support per view */
 	XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
 			PropModeReplace, (unsigned char *) netatom, NetLast);
-
 	/* select for events */
 	wa.cursor = cursor[CurNormal];
 	wa.event_mask = SubstructureRedirectMask|SubstructureNotifyMask|ButtonPressMask
@@ -1423,7 +1471,6 @@ setup(void) {
 			|PropertyChangeMask;
 	XChangeWindowAttributes(dpy, root, CWEventMask|CWCursor, &wa);
 	XSelectInput(dpy, root, wa.event_mask);
-
 	grabkeys();
 }
 
@@ -1434,7 +1481,7 @@ showhide(Client *c) {
 	if(ISVISIBLE(c)) { /* show clients top down */
 		XMoveWindow(dpy, c->win, c->x, c->y);
 		if(!lt[c->mon->sellt]->arrange || c->isfloating)
-			resize(c, c->x, c->y, c->w, c->h);
+			resize(c, c->x, c->y, c->w, c->h, False);
 		showhide(c->snext);
 	}
 	else { /* hide clients bottom up */
@@ -1471,29 +1518,12 @@ tag(const Arg *arg) {
 	}
 }
 
-#ifdef XINERAMA
 void
 tagmon(const Arg *arg) {
-	unsigned int i;
-	Client *c;
-	Monitor *m;
-
-	if(!(c = selmon->sel))
-		return;
-	for(i = 0, m = mons; m; m = m->next, i++)
-		if(i == arg->ui) {
-			detach(c);
-			detachstack(c);
-			c->mon = m;
-			attach(c);
-			attachstack(c);
-			selmon->sel = selmon->stack;
-			m->sel = c;
-			arrange();
-			break;
-		}
+	if(!selmon->sel || !mons->next)
+		return
+	sendmon(selmon->sel, dirtomon(arg->i));
 }
-#endif /* XINERAMA */
 
 int
 textnw(const char *text, unsigned int len) {
@@ -1515,15 +1545,12 @@ tile(Monitor *m) {
 	for(n = 0, c = nexttiled(m->clients); c; c = nexttiled(c->next), n++);
 	if(n == 0)
 		return;
-
 	/* master */
 	c = nexttiled(m->clients);
 	mw = m->mfact * m->ww;
-	resize(c, m->wx, m->wy, (n == 1 ? m->ww : mw) - 2 * c->bw, m->wh - 2 * c->bw);
-
+	resize(c, m->wx, m->wy, (n == 1 ? m->ww : mw) - 2 * c->bw, m->wh - 2 * c->bw, False);
 	if(--n == 0)
 		return;
-
 	/* tile stack */
 	x = (m->wx + mw > c->x + c->w) ? c->x + c->w + 2 * c->bw : m->wx + mw;
 	y = m->wy;
@@ -1531,10 +1558,9 @@ tile(Monitor *m) {
 	h = m->wh / n;
 	if(h < bh)
 		h = m->wh;
-
 	for(i = 0, c = nexttiled(c->next); c; c = nexttiled(c->next), i++) {
 		resize(c, x, y, w - 2 * c->bw, /* remainder */ ((i + 1 == n)
-		       ? m->wy + m->wh - y - 2 * c->bw : h - 2 * c->bw));
+		       ? m->wy + m->wh - y - 2 * c->bw : h - 2 * c->bw), False);
 		if(h != m->wh)
 			y = c->y + HEIGHT(c);
 	}
@@ -1554,7 +1580,8 @@ togglefloating(const Arg *arg) {
 		return;
 	selmon->sel->isfloating = !selmon->sel->isfloating || selmon->sel->isfixed;
 	if(selmon->sel->isfloating)
-		resize(selmon->sel, selmon->sel->x, selmon->sel->y, selmon->sel->w, selmon->sel->h);
+		resize(selmon->sel, selmon->sel->x, selmon->sel->y,
+		       selmon->sel->w, selmon->sel->h, False);
 	arrange();
 }
 
@@ -1564,7 +1591,6 @@ toggletag(const Arg *arg) {
 
 	if(!selmon->sel)
 		return;
-	
 	mask = selmon->sel->tags ^ (arg->ui & TAGMASK);
 	if(mask) {
 		selmon->sel->tags = mask;
@@ -1582,6 +1608,15 @@ toggleview(const Arg *arg) {
 	}
 }
 
+void
+unfocus(Client *c) {
+	if(!c)
+		return;
+	grabbuttons(c, False);
+	XSetWindowBorder(dpy, c->win, dc.norm[ColBorder]);
+	XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
+}
+
 void
 unmanage(Client *c) {
 	XWindowChanges wc;
@@ -1593,16 +1628,13 @@ unmanage(Client *c) {
 	XConfigureWindow(dpy, c->win, CWBorderWidth, &wc); /* restore border */
 	detach(c);
 	detachstack(c);
-	if(c->mon->sel == c) {
-		c->mon->sel = c->mon->stack;
-		focus(NULL);
-	}
 	XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
 	setclientstate(c, WithdrawnState);
 	free(c);
 	XSync(dpy, False);
 	XSetErrorHandler(xerror);
 	XUngrabServer(dpy);
+	focus(NULL);
 	arrange();
 }
 
@@ -1611,7 +1643,7 @@ unmapnotify(XEvent *e) {
 	Client *c;
 	XUnmapEvent *ev = &e->xunmap;
 
-	if((c = getclient(ev->window)))
+	if((c = wintoclient(ev->window)))
 		unmanage(c);
 }
 
@@ -1623,10 +1655,8 @@ updatebars(void) {
 	wa.override_redirect = True;
 	wa.background_pixmap = ParentRelative;
 	wa.event_mask = ButtonPressMask|ExposureMask;
-
 	for(m = mons; m; m = m->next) {
 		m->barwin = XCreateWindow(dpy, root, m->wx, m->by, m->ww, bh, 0, DefaultDepth(dpy, screen),
-
 		                          CopyFromParent, DefaultVisual(dpy, screen),
 		                          CWOverrideRedirect|CWBackPixmap|CWEventMask, &wa);
 		XDefineCursor(dpy, m->barwin, cursor[CurNormal]);
@@ -1649,104 +1679,69 @@ updatebarpos(Monitor *m) {
 
 void
 updategeom(void) {
-	int i, di, n = 1, x, y;
-	unsigned int dui;
+	int i, n = 1;
 	Client *c;
 	Monitor *newmons = NULL, *m, *tm;
-	Window dummy;
 
-#ifdef XINULATOR
-	n = 2;
-#elif defined(XINERAMA)
+#ifdef XINERAMA
 	XineramaScreenInfo *info = NULL;
 
 	if(XineramaIsActive(dpy))
 		info = XineramaQueryScreens(dpy, &n);
-#endif
+#endif /* XINERAMA */
 	/* allocate monitor(s) for the new geometry setup */
 	for(i = 0; i < n; i++) {
 		m = (Monitor *)malloc(sizeof(Monitor));
 		m->next = newmons;
 		newmons = m;
 	}
-
 	/* initialise monitor(s) */
-#ifdef XINULATOR
-	if(1) {
-		m = newmons;
-		m->screen_number = 0;
-		m->wx = sx;
-		m->my = m->wy = sy;
-		m->ww = sw;
-		m->mh = m->wh = sh / 2;
-		m = newmons->next;
-		m->screen_number = 1;
-		m->wx = sx;
-		m->my = m->wy = sy + sh / 2;
-		m->ww = sw;
-		m->mh = m->wh = sh / 2;
-	}
-	else
-#elif defined(XINERAMA)
+#ifdef XINERAMA
 	if(XineramaIsActive(dpy)) {
 		for(i = 0, m = newmons; m; m = m->next, i++) {
 			m->screen_number = info[i].screen_number;
-			m->wx = info[i].x_org;
+			m->mx = m->wx = info[i].x_org;
 			m->my = m->wy = info[i].y_org;
-			m->ww = info[i].width;
+			m->mw = m->ww = info[i].width;
 			m->mh = m->wh = info[i].height;
 		}
 		XFree(info);
 	}
 	else
-#endif
+#endif /* XINERAMA */
 	/* default monitor setup */
 	{
 		m->screen_number = 0;
-		m->wx = sx;
-		m->my = m->wy = sy;
-		m->ww = sw;
+		m->mx = m->wx = 0;
+		m->my = m->wy = 0;
+		m->mw = m->ww = sw;
 		m->mh = m->wh = sh;
 	}
-
 	/* bar geometry setup */
 	for(m = newmons; m; m = m->next) {
-		/* TODO: consider removing the following values from config.h */
-		m->clients = NULL;
-		m->sel = NULL;
-		m->stack = NULL;
+		m->sel = m->stack = m->clients = NULL;
 		m->seltags = 0;
 		m->sellt = 0;
 		m->tagset[0] = m->tagset[1] = 1;
 		m->mfact = mfact;
-		m->showbar = showbar;
-		m->topbar = topbar;
+		m->showbar = SHOWBAR;
+		m->topbar = TOPBAR;
 		updatebarpos(m);
 	}
-
 	/* reassign left over clients of disappeared monitors */
-	for(tm = mons; tm; tm = tm->next) {
-		while((c = tm->clients)) {
-			detach(c);
+	for(tm = mons; tm; tm = tm->next)
+		while(tm->clients) {
+			c = tm->clients;
+			tm->clients = c->next;
 			detachstack(c);
 			c->mon = newmons;
 			attach(c);
 			attachstack(c);
 		}
-	}
-
 	/* select focused monitor */
-	selmon = newmons;
-	if(XQueryPointer(dpy, root, &dummy, &dummy, &x, &y, &di, &di, &dui)) 
-		for(m = newmons; m; m = m->next)
-			if(INRECT(x, y, m->wx, m->wy, m->ww, m->wh)) {
-				selmon = m;
-				break;
-			}
-
-	/* final assignment of new monitors */
 	cleanupmons();
-	mons = newmons;
+	selmon = mons = newmons;
+	selmon = wintomon(root);
 }
 
 void
@@ -1821,7 +1816,7 @@ updatetitle(Client *c) {
 }
 
 void
-updatestatus() {
+updatestatus(void) {
 	if(!gettextprop(root, XA_WM_NAME, stext, sizeof(stext)))
 		strcpy(stext, "dwm-"VERSION);
 	drawbar(selmon);
@@ -1838,7 +1833,6 @@ updatewmhints(Client *c) {
 		}
 		else
 			c->isurgent = (wmh->flags & XUrgencyHint) ? True : False;
-
 		XFree(wmh);
 	}
 }
@@ -1853,6 +1847,34 @@ view(const Arg *arg) {
 	arrange();
 }
 
+Client *
+wintoclient(Window w) {
+	Client *c;
+	Monitor *m;
+
+	for(m = mons; m; m = m->next)
+		for(c = m->clients; c; c = c->next)
+			if(c->win == w)
+				return c;
+	return NULL;
+}
+
+Monitor *
+wintomon(Window w) {
+	int x, y;
+	Client *c;
+	Monitor *m;
+
+	if(w == root && getrootpointer(&x, &y))
+		return pointertomon(x, y);
+	for(m = mons; m; m = m->next)
+		if(w == m->barwin)
+			return m;
+	if((c = wintoclient(w)))
+		return c->mon;
+	return selmon;
+}
+
 /* 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.  */
@@ -1890,7 +1912,9 @@ void
 zoom(const Arg *arg) {
 	Client *c = selmon->sel;
 
-	if(!lt[selmon->sellt]->arrange || lt[selmon->sellt]->arrange == monocle || (selmon->sel && selmon->sel->isfloating))
+	if(!lt[selmon->sellt]->arrange
+	|| lt[selmon->sellt]->arrange == monocle
+	|| (selmon->sel && selmon->sel->isfloating))
 		return;
 	if(c == nexttiled(selmon->clients))
 		if(!c || !(c = nexttiled(c->next)))
@@ -1907,19 +1931,15 @@ main(int argc, char *argv[]) {
 		die("dwm-"VERSION", © 2006-2009 dwm engineers, see LICENSE for details\n");
 	else if(argc != 1)
 		die("usage: dwm [-v]\n");
-
 	if(!setlocale(LC_CTYPE, "") || !XSupportsLocale())
 		fputs("warning: no locale support\n", stderr);
-
 	if(!(dpy = XOpenDisplay(NULL)))
 		die("dwm: cannot open display\n");
-
 	checkotherwm();
 	setup();
 	scan();
 	run();
 	cleanup();
-
 	XCloseDisplay(dpy);
 	return 0;
 }