X-Git-Url: https://git.xinqibao.xyz/dwm.git/blobdiff_plain/e3f0445df1dcdd34189c9d48cbad67dd32764575..25947bcfdbef9e9bd937be0e07437c67c037516c:/dwm.c

diff --git a/dwm.c b/dwm.c
index 6459512..c47887b 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
@@ -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;
@@ -166,7 +165,7 @@ static void detach(Client *c);
 static void detachstack(Client *c);
 static void die(const char *errstr, ...);
 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);
@@ -174,12 +173,13 @@ static void expose(XEvent *e);
 static void focus(Client *c);
 static void focusin(XEvent *e);
 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);
 static void grabkeys(void);
+static Monitor *idxtomon(unsigned int n);
 static void initfont(const char *fontstr);
 static Bool isprotodel(Client *c);
 static void keypress(XEvent *e);
@@ -190,6 +190,7 @@ 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);
@@ -197,6 +198,7 @@ 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);
@@ -223,6 +225,8 @@ 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);
@@ -397,15 +401,11 @@ buttonpress(XEvent *e) {
 
 	click = ClkRootWin;
 	/* focus monitor if necessary */
-	for(m = mons; m; m = m->next)
-		if(ev->window == m->barwin) {
-			if(m != selmon) {
-				unfocus(selmon->stack);
-				selmon = m;
-				focus(NULL);
-			}
-			break;
-		}
+	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;
@@ -423,7 +423,7 @@ buttonpress(XEvent *e) {
 		else
 			click = ClkWinTitle;
 	}
-	else if((c = getclient(ev->window))) {
+	else if((c = wintoclient(ev->window))) {
 		focus(c);
 		click = ClkClientWin;
 	}
@@ -456,8 +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);
@@ -541,25 +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))
@@ -586,7 +586,7 @@ destroynotify(XEvent *e) {
 	Client *c;
 	XDestroyWindowEvent *ev = &e->xdestroywindow;
 
-	if((c = getclient(ev->window)))
+	if((c = wintoclient(ev->window)))
 		unmanage(c);
 }
 
@@ -600,10 +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
@@ -683,7 +688,7 @@ drawbar(Monitor *m) {
 }
 
 void
-drawbars() {
+drawbars(void) {
 	Monitor *m;
 
 	for(m = mons; m; m = m->next)
@@ -742,11 +747,16 @@ 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);
@@ -757,12 +767,8 @@ 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
@@ -799,21 +805,13 @@ focusin(XEvent *e) { /* there are some broken focus acquiring clients */
 #ifdef XINERAMA
 void
 focusmon(const Arg *arg) {
-	unsigned int i;
-	Monitor *m; 
-
-	for(i = 0, m = mons; m; m = m->next, i++)
-		if(i == arg->ui) {
-			if(m->stack)
-				focus(m->stack);
-			else {
-				unfocus(selmon->stack);
-				selmon = m;
-				focus(NULL);
-			}
-			drawbars();
-			break;
-		}
+	Monitor *m;
+
+	if(!(m = idxtomon(arg->ui)) || m == selmon)
+		return;
+	unfocus(selmon->sel);
+	selmon = m;
+	focus(NULL);
 }
 #endif /* XINERAMA */
 
@@ -843,18 +841,6 @@ focusstack(const Arg *arg) {
 	}
 }
 
-Client *
-getclient(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;
-}
-
 unsigned long
 getcolor(const char *colstr) {
 	Colormap cmap = DefaultColormap(dpy, screen);
@@ -865,6 +851,14 @@ 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;
@@ -948,6 +942,15 @@ grabkeys(void) {
 	}
 }
 
+Monitor *
+idxtomon(unsigned int n) {
+	unsigned int i;
+	Monitor *m;
+
+	for(m = mons, i = 0; m && i != n; m = m->next, i++);
+	return m;
+}
+
 void
 initfont(const char *fontstr) {
 	char *def, **missing;
@@ -1046,25 +1049,25 @@ manage(Window w, XWindowAttributes *wa) {
 	c->mon = selmon;
 
 	/* geometry */
-	c->x = wa->x;
-	c->y = wa->y;
+	c->x = wa->x + selmon->wx;
+	c->y = wa->y + selmon->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 == selmon->mw && c->h == selmon->mh) {
+		c->x = selmon->mx;
+		c->y = selmon->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) > selmon->mx + selmon->mw)
+			c->x = selmon->mx + selmon->mw - WIDTH(c);
+		if(c->y + HEIGHT(c) > selmon->my + selmon->mh)
+			c->y = selmon->my + selmon->mh - HEIGHT(c);
+		c->x = MAX(c->x, selmon->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 : selmon->my);
 		c->bw = borderpx;
 	}
 
@@ -1077,7 +1080,7 @@ manage(Window w, XWindowAttributes *wa) {
 	grabbuttons(c, False);
 	updatetitle(c);
 	if(XGetTransientForHint(dpy, w, &trans))
-		t = getclient(trans);
+		t = wintoclient(trans);
 	if(t)
 		c->tags = t->tags;
 	else
@@ -1112,7 +1115,7 @@ maprequest(XEvent *e) {
 		return;
 	if(wa.override_redirect)
 		return;
-	if(!getclient(ev->window))
+	if(!wintoclient(ev->window))
 		manage(ev->window, &wa);
 }
 
@@ -1126,10 +1129,9 @@ monocle(Monitor *m) {
 
 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))
@@ -1140,7 +1142,8 @@ 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) {
@@ -1173,6 +1176,11 @@ movemouse(const Arg *arg) {
 	}
 	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 *
@@ -1181,6 +1189,16 @@ 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 mons;
+}
+
 void
 propertynotify(XEvent *e) {
 	Client *c;
@@ -1191,12 +1209,12 @@ 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:
@@ -1241,6 +1259,7 @@ resizemouse(const Arg *arg) {
 	int ocx, ocy;
 	int nw, nh;
 	Client *c;
+	Monitor *m;
 	XEvent ev;
 
 	if(!(c = selmon->sel))
@@ -1279,6 +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
@@ -1343,6 +1367,20 @@ scan(void) {
 	}
 }
 
+void
+sendmon(Client *c, Monitor *m) {
+	if(c->mon == m)
+		return;
+	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};
@@ -1491,26 +1529,11 @@ tag(const Arg *arg) {
 #ifdef XINERAMA
 void
 tagmon(const Arg *arg) {
-	unsigned int i;
-	Client *c;
 	Monitor *m;
 
-	if(!(c = selmon->sel))
+	if(!selmon->sel || !(m = idxtomon(arg->ui)))
 		return;
-	for(i = 0, m = mons; m; m = m->next, i++)
-		if(i == arg->ui) {
-			detach(c);
-			detachstack(c);
-			c->mon = m;
-			c->tags = selmon->seltags; /* assign tags of target monitor */
-			attach(c);
-			attachstack(c);
-			m->sel = c;
-			for(c = selmon->stack; c && !ISVISIBLE(c); c = c->snext);
-			selmon->sel = c;
-			arrange();
-			break;
-		}
+	sendmon(selmon->sel, m);
 }
 #endif /* XINERAMA */
 
@@ -1621,19 +1644,13 @@ unmanage(Client *c) {
 	XConfigureWindow(dpy, c->win, CWBorderWidth, &wc); /* restore border */
 	detach(c);
 	detachstack(c);
-	if(c->mon->sel == c) {
-		/* TODO: consider separate the next code into a function or into detachstack? */
-		Client *tc;
-		for(tc = c->mon->stack; tc && !ISVISIBLE(tc); tc = tc->snext);
-		c->mon->sel = tc;
-		focus(NULL);
-	}
 	XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
 	setclientstate(c, WithdrawnState);
 	free(c);
 	XSync(dpy, False);
 	XSetErrorHandler(xerror);
 	XUngrabServer(dpy);
+	focus(NULL);
 	arrange();
 }
 
@@ -1642,7 +1659,7 @@ unmapnotify(XEvent *e) {
 	Client *c;
 	XUnmapEvent *ev = &e->xunmap;
 
-	if((c = getclient(ev->window)))
+	if((c = wintoclient(ev->window)))
 		unmanage(c);
 }
 
@@ -1680,20 +1697,16 @@ 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));
@@ -1702,35 +1715,19 @@ updategeom(void) {
 	}
 
 	/* 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;
@@ -1742,16 +1739,13 @@ updategeom(void) {
 
 	/* 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);
 	}
 
@@ -1767,17 +1761,9 @@ updategeom(void) {
 		}
 
 	/* 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 = wintomon(root);
 }
 
 void
@@ -1852,7 +1838,7 @@ updatetitle(Client *c) {
 }
 
 void
-updatestatus() {
+updatestatus(void) {
 	if(!gettextprop(root, XA_WM_NAME, stext, sizeof(stext)))
 		strcpy(stext, "dwm-"VERSION);
 	drawbar(selmon);
@@ -1884,6 +1870,34 @@ 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 mons;
+}
+
 /* 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.  */