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[dwm.git] / dwm.c
1 /* See LICENSE file for copyright and license details.
2 *
3 * dynamic window manager is designed like any other X client as well. It is
4 * driven through handling X events. In contrast to other X clients, a window
5 * manager selects for SubstructureRedirectMask on the root window, to receive
6 * events about window (dis-)appearance. Only one X connection at a time is
7 * allowed to select for this event mask.
8 *
9 * The event handlers of dwm are organized in an array which is accessed
10 * whenever a new event has been fetched. This allows event dispatching
11 * in O(1) time.
12 *
13 * Each child of the root window is called a client, except windows which have
14 * set the override_redirect flag. Clients are organized in a linked client
15 * list on each monitor, the focus history is remembered through a stack list
16 * on each monitor. Each client contains a bit array to indicate the tags of a
17 * client.
18 *
19 * Keys and tagging rules are organized as arrays and defined in config.h.
20 *
21 * To understand everything else, start reading main().
22 */
23 #include <errno.h>
24 #include <locale.h>
25 #include <stdarg.h>
26 #include <signal.h>
27 #include <stdio.h>
28 #include <stdlib.h>
29 #include <string.h>
30 #include <unistd.h>
31 #include <sys/types.h>
32 #include <sys/wait.h>
33 #include <X11/cursorfont.h>
34 #include <X11/keysym.h>
35 #include <X11/Xatom.h>
36 #include <X11/Xlib.h>
37 #include <X11/Xproto.h>
38 #include <X11/Xutil.h>
39 #ifdef XINERAMA
40 #include <X11/extensions/Xinerama.h>
41 #endif /* XINERAMA */
42
43 /* macros */
44 #define BUTTONMASK (ButtonPressMask|ButtonReleaseMask)
45 #define CLEANMASK(mask) (mask & (ShiftMask|ControlMask|Mod1Mask|Mod2Mask|Mod3Mask|Mod4Mask|Mod5Mask))
46 #define INRECT(X,Y,RX,RY,RW,RH) ((X) >= (RX) && (X) < (RX) + (RW) && (Y) >= (RY) && (Y) < (RY) + (RH))
47 #define ISVISIBLE(C) ((C->tags & C->mon->tagset[C->mon->seltags]))
48 #define LENGTH(X) (sizeof X / sizeof X[0])
49 #define MAX(A, B) ((A) > (B) ? (A) : (B))
50 #define MIN(A, B) ((A) < (B) ? (A) : (B))
51 #define MOUSEMASK (BUTTONMASK|PointerMotionMask)
52 #define WIDTH(X) ((X)->w + 2 * (X)->bw)
53 #define HEIGHT(X) ((X)->h + 2 * (X)->bw)
54 #define TAGMASK ((1 << LENGTH(tags)) - 1)
55 #define TEXTW(X) (textnw(X, strlen(X)) + dc.font.height)
56
57 /* enums */
58 enum { CurNormal, CurResize, CurMove, CurLast }; /* cursor */
59 enum { ColBorder, ColFG, ColBG, ColLast }; /* color */
60 enum { NetSupported, NetWMName, NetWMState,
61 NetWMFullscreen, NetActiveWindow, NetLast }; /* EWMH atoms */
62 enum { WMProtocols, WMDelete, WMState, WMTakeFocus, WMLast }; /* default atoms */
63 enum { ClkTagBar, ClkLtSymbol, ClkStatusText, ClkWinTitle,
64 ClkClientWin, ClkRootWin, ClkLast }; /* clicks */
65
66 typedef union {
67 int i;
68 unsigned int ui;
69 float f;
70 const void *v;
71 } Arg;
72
73 typedef struct {
74 unsigned int click;
75 unsigned int mask;
76 unsigned int button;
77 void (*func)(const Arg *arg);
78 const Arg arg;
79 } Button;
80
81 typedef struct Monitor Monitor;
82 typedef struct Client Client;
83 struct Client {
84 char name[256];
85 float mina, maxa;
86 int x, y, w, h;
87 int oldx, oldy, oldw, oldh;
88 int basew, baseh, incw, inch, maxw, maxh, minw, minh;
89 int bw, oldbw;
90 unsigned int tags;
91 Bool isfixed, isfloating, isurgent, neverfocus, oldstate, isfullscreen;
92 Client *next;
93 Client *snext;
94 Monitor *mon;
95 Window win;
96 };
97
98 typedef struct {
99 int x, y, w, h;
100 unsigned long norm[ColLast];
101 unsigned long sel[ColLast];
102 Drawable drawable;
103 GC gc;
104 struct {
105 int ascent;
106 int descent;
107 int height;
108 XFontSet set;
109 XFontStruct *xfont;
110 } font;
111 } DC; /* draw context */
112
113 typedef struct {
114 unsigned int mod;
115 KeySym keysym;
116 void (*func)(const Arg *);
117 const Arg arg;
118 } Key;
119
120 typedef struct {
121 const char *symbol;
122 void (*arrange)(Monitor *);
123 } Layout;
124
125 struct Monitor {
126 char ltsymbol[16];
127 float mfact;
128 int num;
129 int by; /* bar geometry */
130 int mx, my, mw, mh; /* screen size */
131 int wx, wy, ww, wh; /* window area */
132 unsigned int seltags;
133 unsigned int sellt;
134 unsigned int tagset[2];
135 Bool showbar;
136 Bool topbar;
137 Client *clients;
138 Client *sel;
139 Client *stack;
140 Monitor *next;
141 Window barwin;
142 const Layout *lt[2];
143 };
144
145 typedef struct {
146 const char *class;
147 const char *instance;
148 const char *title;
149 unsigned int tags;
150 Bool isfloating;
151 int monitor;
152 } Rule;
153
154 /* function declarations */
155 static void applyrules(Client *c);
156 static Bool applysizehints(Client *c, int *x, int *y, int *w, int *h, Bool interact);
157 static void arrange(Monitor *m);
158 static void arrangemon(Monitor *m);
159 static void attach(Client *c);
160 static void attachstack(Client *c);
161 static void buttonpress(XEvent *e);
162 static void checkotherwm(void);
163 static void cleanup(void);
164 static void cleanupmon(Monitor *mon);
165 static void clearurgent(Client *c);
166 static void clientmessage(XEvent *e);
167 static void configure(Client *c);
168 static void configurenotify(XEvent *e);
169 static void configurerequest(XEvent *e);
170 static Monitor *createmon(void);
171 static void destroynotify(XEvent *e);
172 static void detach(Client *c);
173 static void detachstack(Client *c);
174 static void die(const char *errstr, ...);
175 static Monitor *dirtomon(int dir);
176 static void drawbar(Monitor *m);
177 static void drawbars(void);
178 static void drawsquare(Bool filled, Bool empty, Bool invert, unsigned long col[ColLast]);
179 static void drawtext(const char *text, unsigned long col[ColLast], Bool invert);
180 static void enternotify(XEvent *e);
181 static void expose(XEvent *e);
182 static void focus(Client *c);
183 static void focusin(XEvent *e);
184 static void focusmon(const Arg *arg);
185 static void focusstack(const Arg *arg);
186 static unsigned long getcolor(const char *colstr);
187 static Bool getrootptr(int *x, int *y);
188 static long getstate(Window w);
189 static Bool gettextprop(Window w, Atom atom, char *text, unsigned int size);
190 static void grabbuttons(Client *c, Bool focused);
191 static void grabkeys(void);
192 static void initfont(const char *fontstr);
193 static void keypress(XEvent *e);
194 static void killclient(const Arg *arg);
195 static void manage(Window w, XWindowAttributes *wa);
196 static void mappingnotify(XEvent *e);
197 static void maprequest(XEvent *e);
198 static void monocle(Monitor *m);
199 static void movemouse(const Arg *arg);
200 static Client *nexttiled(Client *c);
201 static void pop(Client *);
202 static void propertynotify(XEvent *e);
203 static Monitor *ptrtomon(int x, int y);
204 static void quit(const Arg *arg);
205 static void resize(Client *c, int x, int y, int w, int h, Bool interact);
206 static void resizeclient(Client *c, int x, int y, int w, int h);
207 static void resizemouse(const Arg *arg);
208 static void restack(Monitor *m);
209 static void run(void);
210 static void scan(void);
211 static Bool sendevent(Client *c, Atom proto);
212 static void sendmon(Client *c, Monitor *m);
213 static void setclientstate(Client *c, long state);
214 static void setfocus(Client *c);
215 static void setlayout(const Arg *arg);
216 static void setmfact(const Arg *arg);
217 static void setup(void);
218 static void showhide(Client *c);
219 static void sigchld(int unused);
220 static void spawn(const Arg *arg);
221 static void tag(const Arg *arg);
222 static void tagmon(const Arg *arg);
223 static int textnw(const char *text, unsigned int len);
224 static void tile(Monitor *);
225 static void togglebar(const Arg *arg);
226 static void togglefloating(const Arg *arg);
227 static void toggletag(const Arg *arg);
228 static void toggleview(const Arg *arg);
229 static void unfocus(Client *c, Bool setfocus);
230 static void unmanage(Client *c, Bool destroyed);
231 static void unmapnotify(XEvent *e);
232 static Bool updategeom(void);
233 static void updatebarpos(Monitor *m);
234 static void updatebars(void);
235 static void updatenumlockmask(void);
236 static void updatesizehints(Client *c);
237 static void updatestatus(void);
238 static void updatetitle(Client *c);
239 static void updatewmhints(Client *c);
240 static void view(const Arg *arg);
241 static Client *wintoclient(Window w);
242 static Monitor *wintomon(Window w);
243 static int xerror(Display *dpy, XErrorEvent *ee);
244 static int xerrordummy(Display *dpy, XErrorEvent *ee);
245 static int xerrorstart(Display *dpy, XErrorEvent *ee);
246 static void zoom(const Arg *arg);
247
248 /* variables */
249 static const char broken[] = "broken";
250 static char stext[256];
251 static int screen;
252 static int sw, sh; /* X display screen geometry width, height */
253 static int bh, blw = 0; /* bar geometry */
254 static int (*xerrorxlib)(Display *, XErrorEvent *);
255 static unsigned int numlockmask = 0;
256 static void (*handler[LASTEvent]) (XEvent *) = {
257 [ButtonPress] = buttonpress,
258 [ClientMessage] = clientmessage,
259 [ConfigureRequest] = configurerequest,
260 [ConfigureNotify] = configurenotify,
261 [DestroyNotify] = destroynotify,
262 [EnterNotify] = enternotify,
263 [Expose] = expose,
264 [FocusIn] = focusin,
265 [KeyPress] = keypress,
266 [MappingNotify] = mappingnotify,
267 [MapRequest] = maprequest,
268 [PropertyNotify] = propertynotify,
269 [UnmapNotify] = unmapnotify
270 };
271 static Atom wmatom[WMLast], netatom[NetLast];
272 static Bool running = True;
273 static Cursor cursor[CurLast];
274 static Display *dpy;
275 static DC dc;
276 static Monitor *mons = NULL, *selmon = NULL;
277 static Window root;
278
279 /* configuration, allows nested code to access above variables */
280 #include "config.h"
281
282 /* compile-time check if all tags fit into an unsigned int bit array. */
283 struct NumTags { char limitexceeded[LENGTH(tags) > 31 ? -1 : 1]; };
284
285 /* function implementations */
286 void
287 applyrules(Client *c) {
288 const char *class, *instance;
289 unsigned int i;
290 const Rule *r;
291 Monitor *m;
292 XClassHint ch = { 0 };
293
294 /* rule matching */
295 c->isfloating = c->tags = 0;
296 if(XGetClassHint(dpy, c->win, &ch)) {
297 class = ch.res_class ? ch.res_class : broken;
298 instance = ch.res_name ? ch.res_name : broken;
299 for(i = 0; i < LENGTH(rules); i++) {
300 r = &rules[i];
301 if((!r->title || strstr(c->name, r->title))
302 && (!r->class || strstr(class, r->class))
303 && (!r->instance || strstr(instance, r->instance)))
304 {
305 c->isfloating = r->isfloating;
306 c->tags |= r->tags;
307 for(m = mons; m && m->num != r->monitor; m = m->next);
308 if(m)
309 c->mon = m;
310 }
311 }
312 if(ch.res_class)
313 XFree(ch.res_class);
314 if(ch.res_name)
315 XFree(ch.res_name);
316 }
317 c->tags = c->tags & TAGMASK ? c->tags & TAGMASK : c->mon->tagset[c->mon->seltags];
318 }
319
320 Bool
321 applysizehints(Client *c, int *x, int *y, int *w, int *h, Bool interact) {
322 Bool baseismin;
323 Monitor *m = c->mon;
324
325 /* set minimum possible */
326 *w = MAX(1, *w);
327 *h = MAX(1, *h);
328 if(interact) {
329 if(*x > sw)
330 *x = sw - WIDTH(c);
331 if(*y > sh)
332 *y = sh - HEIGHT(c);
333 if(*x + *w + 2 * c->bw < 0)
334 *x = 0;
335 if(*y + *h + 2 * c->bw < 0)
336 *y = 0;
337 }
338 else {
339 if(*x > m->mx + m->mw)
340 *x = m->mx + m->mw - WIDTH(c);
341 if(*y > m->my + m->mh)
342 *y = m->my + m->mh - HEIGHT(c);
343 if(*x + *w + 2 * c->bw < m->mx)
344 *x = m->mx;
345 if(*y + *h + 2 * c->bw < m->my)
346 *y = m->my;
347 }
348 if(*h < bh)
349 *h = bh;
350 if(*w < bh)
351 *w = bh;
352 if(resizehints || c->isfloating) {
353 /* see last two sentences in ICCCM 4.1.2.3 */
354 baseismin = c->basew == c->minw && c->baseh == c->minh;
355 if(!baseismin) { /* temporarily remove base dimensions */
356 *w -= c->basew;
357 *h -= c->baseh;
358 }
359 /* adjust for aspect limits */
360 if(c->mina > 0 && c->maxa > 0) {
361 if(c->maxa < (float)*w / *h)
362 *w = *h * c->maxa + 0.5;
363 else if(c->mina < (float)*h / *w)
364 *h = *w * c->mina + 0.5;
365 }
366 if(baseismin) { /* increment calculation requires this */
367 *w -= c->basew;
368 *h -= c->baseh;
369 }
370 /* adjust for increment value */
371 if(c->incw)
372 *w -= *w % c->incw;
373 if(c->inch)
374 *h -= *h % c->inch;
375 /* restore base dimensions */
376 *w = MAX(*w + c->basew, c->minw);
377 *h = MAX(*h + c->baseh, c->minh);
378 if(c->maxw)
379 *w = MIN(*w, c->maxw);
380 if(c->maxh)
381 *h = MIN(*h, c->maxh);
382 }
383 return *x != c->x || *y != c->y || *w != c->w || *h != c->h;
384 }
385
386 void
387 arrange(Monitor *m) {
388 if(m)
389 showhide(m->stack);
390 else for(m = mons; m; m = m->next)
391 showhide(m->stack);
392 focus(NULL);
393 if(m)
394 arrangemon(m);
395 else for(m = mons; m; m = m->next)
396 arrangemon(m);
397 }
398
399 void
400 arrangemon(Monitor *m) {
401 strncpy(m->ltsymbol, m->lt[m->sellt]->symbol, sizeof m->ltsymbol);
402 if(m->lt[m->sellt]->arrange)
403 m->lt[m->sellt]->arrange(m);
404 restack(m);
405 }
406
407 void
408 attach(Client *c) {
409 c->next = c->mon->clients;
410 c->mon->clients = c;
411 }
412
413 void
414 attachstack(Client *c) {
415 c->snext = c->mon->stack;
416 c->mon->stack = c;
417 }
418
419 void
420 buttonpress(XEvent *e) {
421 unsigned int i, x, click;
422 Arg arg = {0};
423 Client *c;
424 Monitor *m;
425 XButtonPressedEvent *ev = &e->xbutton;
426
427 click = ClkRootWin;
428 /* focus monitor if necessary */
429 if((m = wintomon(ev->window)) && m != selmon) {
430 unfocus(selmon->sel, True);
431 selmon = m;
432 focus(NULL);
433 }
434 if(ev->window == selmon->barwin) {
435 i = x = 0;
436 do {
437 x += TEXTW(tags[i]);
438 } while(ev->x >= x && ++i < LENGTH(tags));
439 if(i < LENGTH(tags)) {
440 click = ClkTagBar;
441 arg.ui = 1 << i;
442 }
443 else if(ev->x < x + blw)
444 click = ClkLtSymbol;
445 else if(ev->x > selmon->wx + selmon->ww - TEXTW(stext))
446 click = ClkStatusText;
447 else
448 click = ClkWinTitle;
449 }
450 else if((c = wintoclient(ev->window))) {
451 focus(c);
452 click = ClkClientWin;
453 }
454 for(i = 0; i < LENGTH(buttons); i++)
455 if(click == buttons[i].click && buttons[i].func && buttons[i].button == ev->button
456 && CLEANMASK(buttons[i].mask) == CLEANMASK(ev->state))
457 buttons[i].func(click == ClkTagBar && buttons[i].arg.i == 0 ? &arg : &buttons[i].arg);
458 }
459
460 void
461 checkotherwm(void) {
462 xerrorxlib = XSetErrorHandler(xerrorstart);
463 /* this causes an error if some other window manager is running */
464 XSelectInput(dpy, DefaultRootWindow(dpy), SubstructureRedirectMask);
465 XSync(dpy, False);
466 XSetErrorHandler(xerror);
467 XSync(dpy, False);
468 }
469
470 void
471 cleanup(void) {
472 Arg a = {.ui = ~0};
473 Layout foo = { "", NULL };
474 Monitor *m;
475
476 view(&a);
477 selmon->lt[selmon->sellt] = &foo;
478 for(m = mons; m; m = m->next)
479 while(m->stack)
480 unmanage(m->stack, False);
481 if(dc.font.set)
482 XFreeFontSet(dpy, dc.font.set);
483 else
484 XFreeFont(dpy, dc.font.xfont);
485 XUngrabKey(dpy, AnyKey, AnyModifier, root);
486 XFreePixmap(dpy, dc.drawable);
487 XFreeGC(dpy, dc.gc);
488 XFreeCursor(dpy, cursor[CurNormal]);
489 XFreeCursor(dpy, cursor[CurResize]);
490 XFreeCursor(dpy, cursor[CurMove]);
491 while(mons)
492 cleanupmon(mons);
493 XSync(dpy, False);
494 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
495 }
496
497 void
498 cleanupmon(Monitor *mon) {
499 Monitor *m;
500
501 if(mon == mons)
502 mons = mons->next;
503 else {
504 for(m = mons; m && m->next != mon; m = m->next);
505 m->next = mon->next;
506 }
507 XUnmapWindow(dpy, mon->barwin);
508 XDestroyWindow(dpy, mon->barwin);
509 free(mon);
510 }
511
512 void
513 clearurgent(Client *c) {
514 XWMHints *wmh;
515
516 c->isurgent = False;
517 if(!(wmh = XGetWMHints(dpy, c->win)))
518 return;
519 wmh->flags &= ~XUrgencyHint;
520 XSetWMHints(dpy, c->win, wmh);
521 XFree(wmh);
522 }
523
524 void
525 clientmessage(XEvent *e) {
526 XClientMessageEvent *cme = &e->xclient;
527 Client *c = wintoclient(cme->window);
528
529 if(!c)
530 return;
531 if(cme->message_type == netatom[NetWMState] && cme->data.l[1] == netatom[NetWMFullscreen]) {
532 if(cme->data.l[0]) {
533 XChangeProperty(dpy, cme->window, netatom[NetWMState], XA_ATOM, 32,
534 PropModeReplace, (unsigned char*)&netatom[NetWMFullscreen], 1);
535 c->isfullscreen = True;
536 c->oldstate = c->isfloating;
537 c->oldbw = c->bw;
538 c->bw = 0;
539 c->isfloating = True;
540 resizeclient(c, c->mon->mx, c->mon->my, c->mon->mw, c->mon->mh);
541 XRaiseWindow(dpy, c->win);
542 }
543 else {
544 XChangeProperty(dpy, cme->window, netatom[NetWMState], XA_ATOM, 32,
545 PropModeReplace, (unsigned char*)0, 0);
546 c->isfullscreen = False;
547 c->isfloating = c->oldstate;
548 c->bw = c->oldbw;
549 c->x = c->oldx;
550 c->y = c->oldy;
551 c->w = c->oldw;
552 c->h = c->oldh;
553 resizeclient(c, c->x, c->y, c->w, c->h);
554 arrange(c->mon);
555 }
556 }
557 else if(cme->message_type == netatom[NetActiveWindow]) {
558 if(!ISVISIBLE(c)) {
559 c->mon->seltags ^= 1;
560 c->mon->tagset[c->mon->seltags] = c->tags;
561 }
562 pop(c);
563 }
564 }
565
566 void
567 configure(Client *c) {
568 XConfigureEvent ce;
569
570 ce.type = ConfigureNotify;
571 ce.display = dpy;
572 ce.event = c->win;
573 ce.window = c->win;
574 ce.x = c->x;
575 ce.y = c->y;
576 ce.width = c->w;
577 ce.height = c->h;
578 ce.border_width = c->bw;
579 ce.above = None;
580 ce.override_redirect = False;
581 XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&ce);
582 }
583
584 void
585 configurenotify(XEvent *e) {
586 Monitor *m;
587 XConfigureEvent *ev = &e->xconfigure;
588 Bool dirty;
589
590 if(ev->window == root) {
591 dirty = (sw != ev->width);
592 sw = ev->width;
593 sh = ev->height;
594 if(updategeom() || dirty) {
595 if(dc.drawable != 0)
596 XFreePixmap(dpy, dc.drawable);
597 dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
598 updatebars();
599 for(m = mons; m; m = m->next)
600 XMoveResizeWindow(dpy, m->barwin, m->wx, m->by, m->ww, bh);
601 arrange(NULL);
602 }
603 }
604 }
605
606 void
607 configurerequest(XEvent *e) {
608 Client *c;
609 Monitor *m;
610 XConfigureRequestEvent *ev = &e->xconfigurerequest;
611 XWindowChanges wc;
612
613 if((c = wintoclient(ev->window))) {
614 if(ev->value_mask & CWBorderWidth)
615 c->bw = ev->border_width;
616 else if(c->isfloating || !selmon->lt[selmon->sellt]->arrange) {
617 m = c->mon;
618 if(ev->value_mask & CWX)
619 c->x = m->mx + ev->x;
620 if(ev->value_mask & CWY)
621 c->y = m->my + ev->y;
622 if(ev->value_mask & CWWidth)
623 c->w = ev->width;
624 if(ev->value_mask & CWHeight)
625 c->h = ev->height;
626 if((c->x + c->w) > m->mx + m->mw && c->isfloating)
627 c->x = m->mx + (m->mw / 2 - c->w / 2); /* center in x direction */
628 if((c->y + c->h) > m->my + m->mh && c->isfloating)
629 c->y = m->my + (m->mh / 2 - c->h / 2); /* center in y direction */
630 if((ev->value_mask & (CWX|CWY)) && !(ev->value_mask & (CWWidth|CWHeight)))
631 configure(c);
632 if(ISVISIBLE(c))
633 XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
634 }
635 else
636 configure(c);
637 }
638 else {
639 wc.x = ev->x;
640 wc.y = ev->y;
641 wc.width = ev->width;
642 wc.height = ev->height;
643 wc.border_width = ev->border_width;
644 wc.sibling = ev->above;
645 wc.stack_mode = ev->detail;
646 XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
647 }
648 XSync(dpy, False);
649 }
650
651 Monitor *
652 createmon(void) {
653 Monitor *m;
654
655 if(!(m = (Monitor *)calloc(1, sizeof(Monitor))))
656 die("fatal: could not malloc() %u bytes\n", sizeof(Monitor));
657 m->tagset[0] = m->tagset[1] = 1;
658 m->mfact = mfact;
659 m->showbar = showbar;
660 m->topbar = topbar;
661 m->lt[0] = &layouts[0];
662 m->lt[1] = &layouts[1 % LENGTH(layouts)];
663 strncpy(m->ltsymbol, layouts[0].symbol, sizeof m->ltsymbol);
664 return m;
665 }
666
667 void
668 destroynotify(XEvent *e) {
669 Client *c;
670 XDestroyWindowEvent *ev = &e->xdestroywindow;
671
672 if((c = wintoclient(ev->window)))
673 unmanage(c, True);
674 }
675
676 void
677 detach(Client *c) {
678 Client **tc;
679
680 for(tc = &c->mon->clients; *tc && *tc != c; tc = &(*tc)->next);
681 *tc = c->next;
682 }
683
684 void
685 detachstack(Client *c) {
686 Client **tc, *t;
687
688 for(tc = &c->mon->stack; *tc && *tc != c; tc = &(*tc)->snext);
689 *tc = c->snext;
690
691 if(c == c->mon->sel) {
692 for(t = c->mon->stack; t && !ISVISIBLE(t); t = t->snext);
693 c->mon->sel = t;
694 }
695 }
696
697 void
698 die(const char *errstr, ...) {
699 va_list ap;
700
701 va_start(ap, errstr);
702 vfprintf(stderr, errstr, ap);
703 va_end(ap);
704 exit(EXIT_FAILURE);
705 }
706
707 Monitor *
708 dirtomon(int dir) {
709 Monitor *m = NULL;
710
711 if(dir > 0) {
712 if(!(m = selmon->next))
713 m = mons;
714 }
715 else {
716 if(selmon == mons)
717 for(m = mons; m->next; m = m->next);
718 else
719 for(m = mons; m->next != selmon; m = m->next);
720 }
721 return m;
722 }
723
724 void
725 drawbar(Monitor *m) {
726 int x;
727 unsigned int i, occ = 0, urg = 0;
728 unsigned long *col;
729 Client *c;
730
731 for(c = m->clients; c; c = c->next) {
732 occ |= c->tags;
733 if(c->isurgent)
734 urg |= c->tags;
735 }
736 dc.x = 0;
737 for(i = 0; i < LENGTH(tags); i++) {
738 dc.w = TEXTW(tags[i]);
739 col = m->tagset[m->seltags] & 1 << i ? dc.sel : dc.norm;
740 drawtext(tags[i], col, urg & 1 << i);
741 drawsquare(m == selmon && selmon->sel && selmon->sel->tags & 1 << i,
742 occ & 1 << i, urg & 1 << i, col);
743 dc.x += dc.w;
744 }
745 dc.w = blw = TEXTW(m->ltsymbol);
746 drawtext(m->ltsymbol, dc.norm, False);
747 dc.x += dc.w;
748 x = dc.x;
749 if(m == selmon) { /* status is only drawn on selected monitor */
750 dc.w = TEXTW(stext);
751 dc.x = m->ww - dc.w;
752 if(dc.x < x) {
753 dc.x = x;
754 dc.w = m->ww - x;
755 }
756 drawtext(stext, dc.norm, False);
757 }
758 else
759 dc.x = m->ww;
760 if((dc.w = dc.x - x) > bh) {
761 dc.x = x;
762 if(m->sel) {
763 col = m == selmon ? dc.sel : dc.norm;
764 drawtext(m->sel->name, col, False);
765 drawsquare(m->sel->isfixed, m->sel->isfloating, False, col);
766 }
767 else
768 drawtext(NULL, dc.norm, False);
769 }
770 XCopyArea(dpy, dc.drawable, m->barwin, dc.gc, 0, 0, m->ww, bh, 0, 0);
771 XSync(dpy, False);
772 }
773
774 void
775 drawbars(void) {
776 Monitor *m;
777
778 for(m = mons; m; m = m->next)
779 drawbar(m);
780 }
781
782 void
783 drawsquare(Bool filled, Bool empty, Bool invert, unsigned long col[ColLast]) {
784 int x;
785
786 XSetForeground(dpy, dc.gc, col[invert ? ColBG : ColFG]);
787 x = (dc.font.ascent + dc.font.descent + 2) / 4;
788 if(filled)
789 XFillRectangle(dpy, dc.drawable, dc.gc, dc.x+1, dc.y+1, x+1, x+1);
790 else if(empty)
791 XDrawRectangle(dpy, dc.drawable, dc.gc, dc.x+1, dc.y+1, x, x);
792 }
793
794 void
795 drawtext(const char *text, unsigned long col[ColLast], Bool invert) {
796 char buf[256];
797 int i, x, y, h, len, olen;
798
799 XSetForeground(dpy, dc.gc, col[invert ? ColFG : ColBG]);
800 XFillRectangle(dpy, dc.drawable, dc.gc, dc.x, dc.y, dc.w, dc.h);
801 if(!text)
802 return;
803 olen = strlen(text);
804 h = dc.font.ascent + dc.font.descent;
805 y = dc.y + (dc.h / 2) - (h / 2) + dc.font.ascent;
806 x = dc.x + (h / 2);
807 /* shorten text if necessary */
808 for(len = MIN(olen, sizeof buf); len && textnw(text, len) > dc.w - h; len--);
809 if(!len)
810 return;
811 memcpy(buf, text, len);
812 if(len < olen)
813 for(i = len; i && i > len - 3; buf[--i] = '.');
814 XSetForeground(dpy, dc.gc, col[invert ? ColBG : ColFG]);
815 if(dc.font.set)
816 XmbDrawString(dpy, dc.drawable, dc.font.set, dc.gc, x, y, buf, len);
817 else
818 XDrawString(dpy, dc.drawable, dc.gc, x, y, buf, len);
819 }
820
821 void
822 enternotify(XEvent *e) {
823 Monitor *m;
824 XCrossingEvent *ev = &e->xcrossing;
825
826 if((ev->mode != NotifyNormal || ev->detail == NotifyInferior) && ev->window != root)
827 return;
828 if((m = wintomon(ev->window)) && m != selmon) {
829 unfocus(selmon->sel, True);
830 selmon = m;
831 }
832 focus((wintoclient(ev->window)));
833 }
834
835 void
836 expose(XEvent *e) {
837 Monitor *m;
838 XExposeEvent *ev = &e->xexpose;
839
840 if(ev->count == 0 && (m = wintomon(ev->window)))
841 drawbar(m);
842 }
843
844 void
845 focus(Client *c) {
846 if(!c || !ISVISIBLE(c))
847 for(c = selmon->stack; c && !ISVISIBLE(c); c = c->snext);
848 /* was if(selmon->sel) */
849 if(selmon->sel && selmon->sel != c)
850 unfocus(selmon->sel, False);
851 if(c) {
852 if(c->mon != selmon)
853 selmon = c->mon;
854 if(c->isurgent)
855 clearurgent(c);
856 detachstack(c);
857 attachstack(c);
858 grabbuttons(c, True);
859 XSetWindowBorder(dpy, c->win, dc.sel[ColBorder]);
860 setfocus(c);
861 }
862 else
863 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
864 selmon->sel = c;
865 drawbars();
866 }
867
868 void
869 focusin(XEvent *e) { /* there are some broken focus acquiring clients */
870 XFocusChangeEvent *ev = &e->xfocus;
871
872 if(selmon->sel && ev->window != selmon->sel->win)
873 setfocus(selmon->sel);
874 }
875
876 void
877 focusmon(const Arg *arg) {
878 Monitor *m;
879
880 if(!mons->next)
881 return;
882 if((m = dirtomon(arg->i)) == selmon)
883 return;
884 unfocus(selmon->sel, True);
885 selmon = m;
886 focus(NULL);
887 }
888
889 void
890 focusstack(const Arg *arg) {
891 Client *c = NULL, *i;
892
893 if(!selmon->sel)
894 return;
895 if(arg->i > 0) {
896 for(c = selmon->sel->next; c && !ISVISIBLE(c); c = c->next);
897 if(!c)
898 for(c = selmon->clients; c && !ISVISIBLE(c); c = c->next);
899 }
900 else {
901 for(i = selmon->clients; i != selmon->sel; i = i->next)
902 if(ISVISIBLE(i))
903 c = i;
904 if(!c)
905 for(; i; i = i->next)
906 if(ISVISIBLE(i))
907 c = i;
908 }
909 if(c) {
910 focus(c);
911 restack(selmon);
912 }
913 }
914
915 unsigned long
916 getcolor(const char *colstr) {
917 Colormap cmap = DefaultColormap(dpy, screen);
918 XColor color;
919
920 if(!XAllocNamedColor(dpy, cmap, colstr, &color, &color))
921 die("error, cannot allocate color '%s'\n", colstr);
922 return color.pixel;
923 }
924
925 Bool
926 getrootptr(int *x, int *y) {
927 int di;
928 unsigned int dui;
929 Window dummy;
930
931 return XQueryPointer(dpy, root, &dummy, &dummy, x, y, &di, &di, &dui);
932 }
933
934 long
935 getstate(Window w) {
936 int format;
937 long result = -1;
938 unsigned char *p = NULL;
939 unsigned long n, extra;
940 Atom real;
941
942 if(XGetWindowProperty(dpy, w, wmatom[WMState], 0L, 2L, False, wmatom[WMState],
943 &real, &format, &n, &extra, (unsigned char **)&p) != Success)
944 return -1;
945 if(n != 0)
946 result = *p;
947 XFree(p);
948 return result;
949 }
950
951 Bool
952 gettextprop(Window w, Atom atom, char *text, unsigned int size) {
953 char **list = NULL;
954 int n;
955 XTextProperty name;
956
957 if(!text || size == 0)
958 return False;
959 text[0] = '\0';
960 XGetTextProperty(dpy, w, &name, atom);
961 if(!name.nitems)
962 return False;
963 if(name.encoding == XA_STRING)
964 strncpy(text, (char *)name.value, size - 1);
965 else {
966 if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success && n > 0 && *list) {
967 strncpy(text, *list, size - 1);
968 XFreeStringList(list);
969 }
970 }
971 text[size - 1] = '\0';
972 XFree(name.value);
973 return True;
974 }
975
976 void
977 grabbuttons(Client *c, Bool focused) {
978 updatenumlockmask();
979 {
980 unsigned int i, j;
981 unsigned int modifiers[] = { 0, LockMask, numlockmask, numlockmask|LockMask };
982 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
983 if(focused) {
984 for(i = 0; i < LENGTH(buttons); i++)
985 if(buttons[i].click == ClkClientWin)
986 for(j = 0; j < LENGTH(modifiers); j++)
987 XGrabButton(dpy, buttons[i].button,
988 buttons[i].mask | modifiers[j],
989 c->win, False, BUTTONMASK,
990 GrabModeAsync, GrabModeSync, None, None);
991 }
992 else
993 XGrabButton(dpy, AnyButton, AnyModifier, c->win, False,
994 BUTTONMASK, GrabModeAsync, GrabModeSync, None, None);
995 }
996 }
997
998 void
999 grabkeys(void) {
1000 updatenumlockmask();
1001 {
1002 unsigned int i, j;
1003 unsigned int modifiers[] = { 0, LockMask, numlockmask, numlockmask|LockMask };
1004 KeyCode code;
1005
1006 XUngrabKey(dpy, AnyKey, AnyModifier, root);
1007 for(i = 0; i < LENGTH(keys); i++) {
1008 if((code = XKeysymToKeycode(dpy, keys[i].keysym)))
1009 for(j = 0; j < LENGTH(modifiers); j++)
1010 XGrabKey(dpy, code, keys[i].mod | modifiers[j], root,
1011 True, GrabModeAsync, GrabModeAsync);
1012 }
1013 }
1014 }
1015
1016 void
1017 initfont(const char *fontstr) {
1018 char *def, **missing;
1019 int n;
1020
1021 missing = NULL;
1022 dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
1023 if(missing) {
1024 while(n--)
1025 fprintf(stderr, "dwm: missing fontset: %s\n", missing[n]);
1026 XFreeStringList(missing);
1027 }
1028 if(dc.font.set) {
1029 XFontStruct **xfonts;
1030 char **font_names;
1031
1032 dc.font.ascent = dc.font.descent = 0;
1033 XExtentsOfFontSet(dc.font.set);
1034 n = XFontsOfFontSet(dc.font.set, &xfonts, &font_names);
1035 while(n--) {
1036 dc.font.ascent = MAX(dc.font.ascent, (*xfonts)->ascent);
1037 dc.font.descent = MAX(dc.font.descent,(*xfonts)->descent);
1038 xfonts++;
1039 }
1040 }
1041 else {
1042 if(!(dc.font.xfont = XLoadQueryFont(dpy, fontstr))
1043 && !(dc.font.xfont = XLoadQueryFont(dpy, "fixed")))
1044 die("error, cannot load font: '%s'\n", fontstr);
1045 dc.font.ascent = dc.font.xfont->ascent;
1046 dc.font.descent = dc.font.xfont->descent;
1047 }
1048 dc.font.height = dc.font.ascent + dc.font.descent;
1049 }
1050
1051 #ifdef XINERAMA
1052 static Bool
1053 isuniquegeom(XineramaScreenInfo *unique, size_t n, XineramaScreenInfo *info) {
1054 while(n--)
1055 if(unique[n].x_org == info->x_org && unique[n].y_org == info->y_org
1056 && unique[n].width == info->width && unique[n].height == info->height)
1057 return False;
1058 return True;
1059 }
1060 #endif /* XINERAMA */
1061
1062 void
1063 keypress(XEvent *e) {
1064 unsigned int i;
1065 KeySym keysym;
1066 XKeyEvent *ev;
1067
1068 ev = &e->xkey;
1069 keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
1070 for(i = 0; i < LENGTH(keys); i++)
1071 if(keysym == keys[i].keysym
1072 && CLEANMASK(keys[i].mod) == CLEANMASK(ev->state)
1073 && keys[i].func)
1074 keys[i].func(&(keys[i].arg));
1075 }
1076
1077 void
1078 killclient(const Arg *arg) {
1079 if(!selmon->sel)
1080 return;
1081 if(!sendevent(selmon->sel, wmatom[WMDelete])) {
1082 XGrabServer(dpy);
1083 XSetErrorHandler(xerrordummy);
1084 XSetCloseDownMode(dpy, DestroyAll);
1085 XKillClient(dpy, selmon->sel->win);
1086 XSync(dpy, False);
1087 XSetErrorHandler(xerror);
1088 XUngrabServer(dpy);
1089 }
1090 }
1091
1092 void
1093 manage(Window w, XWindowAttributes *wa) {
1094 Client *c, *t = NULL;
1095 Window trans = None;
1096 XWindowChanges wc;
1097
1098 if(!(c = calloc(1, sizeof(Client))))
1099 die("fatal: could not malloc() %u bytes\n", sizeof(Client));
1100 c->win = w;
1101 updatetitle(c);
1102 if(XGetTransientForHint(dpy, w, &trans) && (t = wintoclient(trans))) {
1103 c->mon = t->mon;
1104 c->tags = t->tags;
1105 }
1106 else {
1107 c->mon = selmon;
1108 applyrules(c);
1109 }
1110 /* geometry */
1111 c->x = c->oldx = wa->x + c->mon->wx;
1112 c->y = c->oldy = wa->y + c->mon->wy;
1113 c->w = c->oldw = wa->width;
1114 c->h = c->oldh = wa->height;
1115 c->oldbw = wa->border_width;
1116 if(c->w == c->mon->mw && c->h == c->mon->mh) {
1117 c->isfloating = True;
1118 c->x = c->mon->mx;
1119 c->y = c->mon->my;
1120 c->bw = 0;
1121 }
1122 else {
1123 if(c->x + WIDTH(c) > c->mon->mx + c->mon->mw)
1124 c->x = c->mon->mx + c->mon->mw - WIDTH(c);
1125 if(c->y + HEIGHT(c) > c->mon->my + c->mon->mh)
1126 c->y = c->mon->my + c->mon->mh - HEIGHT(c);
1127 c->x = MAX(c->x, c->mon->mx);
1128 /* only fix client y-offset, if the client center might cover the bar */
1129 c->y = MAX(c->y, ((c->mon->by == 0) && (c->x + (c->w / 2) >= c->mon->wx)
1130 && (c->x + (c->w / 2) < c->mon->wx + c->mon->ww)) ? bh : c->mon->my);
1131 c->bw = borderpx;
1132 }
1133 wc.border_width = c->bw;
1134 XConfigureWindow(dpy, w, CWBorderWidth, &wc);
1135 XSetWindowBorder(dpy, w, dc.norm[ColBorder]);
1136 configure(c); /* propagates border_width, if size doesn't change */
1137 updatesizehints(c);
1138 updatewmhints(c);
1139 XSelectInput(dpy, w, EnterWindowMask|FocusChangeMask|PropertyChangeMask|StructureNotifyMask);
1140 grabbuttons(c, False);
1141 if(!c->isfloating)
1142 c->isfloating = c->oldstate = trans != None || c->isfixed;
1143 if(c->isfloating)
1144 XRaiseWindow(dpy, c->win);
1145 attach(c);
1146 attachstack(c);
1147 XMoveResizeWindow(dpy, c->win, c->x + 2 * sw, c->y, c->w, c->h); /* some windows require this */
1148 XMapWindow(dpy, c->win);
1149 setclientstate(c, NormalState);
1150 arrange(c->mon);
1151 }
1152
1153 void
1154 mappingnotify(XEvent *e) {
1155 XMappingEvent *ev = &e->xmapping;
1156
1157 XRefreshKeyboardMapping(ev);
1158 if(ev->request == MappingKeyboard)
1159 grabkeys();
1160 }
1161
1162 void
1163 maprequest(XEvent *e) {
1164 static XWindowAttributes wa;
1165 XMapRequestEvent *ev = &e->xmaprequest;
1166
1167 if(!XGetWindowAttributes(dpy, ev->window, &wa))
1168 return;
1169 if(wa.override_redirect)
1170 return;
1171 if(!wintoclient(ev->window))
1172 manage(ev->window, &wa);
1173 }
1174
1175 void
1176 monocle(Monitor *m) {
1177 unsigned int n = 0;
1178 Client *c;
1179
1180 for(c = m->clients; c; c = c->next)
1181 if(ISVISIBLE(c))
1182 n++;
1183 if(n > 0) /* override layout symbol */
1184 snprintf(m->ltsymbol, sizeof m->ltsymbol, "[%d]", n);
1185 for(c = nexttiled(m->clients); c; c = nexttiled(c->next))
1186 resize(c, m->wx, m->wy, m->ww - 2 * c->bw, m->wh - 2 * c->bw, False);
1187 }
1188
1189 void
1190 movemouse(const Arg *arg) {
1191 int x, y, ocx, ocy, nx, ny;
1192 Client *c;
1193 Monitor *m;
1194 XEvent ev;
1195
1196 if(!(c = selmon->sel))
1197 return;
1198 restack(selmon);
1199 ocx = c->x;
1200 ocy = c->y;
1201 if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
1202 None, cursor[CurMove], CurrentTime) != GrabSuccess)
1203 return;
1204 if(!getrootptr(&x, &y))
1205 return;
1206 do {
1207 XMaskEvent(dpy, MOUSEMASK|ExposureMask|SubstructureRedirectMask, &ev);
1208 switch(ev.type) {
1209 case ConfigureRequest:
1210 case Expose:
1211 case MapRequest:
1212 handler[ev.type](&ev);
1213 break;
1214 case MotionNotify:
1215 nx = ocx + (ev.xmotion.x - x);
1216 ny = ocy + (ev.xmotion.y - y);
1217 if(nx >= selmon->wx && nx <= selmon->wx + selmon->ww
1218 && ny >= selmon->wy && ny <= selmon->wy + selmon->wh) {
1219 if(abs(selmon->wx - nx) < snap)
1220 nx = selmon->wx;
1221 else if(abs((selmon->wx + selmon->ww) - (nx + WIDTH(c))) < snap)
1222 nx = selmon->wx + selmon->ww - WIDTH(c);
1223 if(abs(selmon->wy - ny) < snap)
1224 ny = selmon->wy;
1225 else if(abs((selmon->wy + selmon->wh) - (ny + HEIGHT(c))) < snap)
1226 ny = selmon->wy + selmon->wh - HEIGHT(c);
1227 if(!c->isfloating && selmon->lt[selmon->sellt]->arrange
1228 && (abs(nx - c->x) > snap || abs(ny - c->y) > snap))
1229 togglefloating(NULL);
1230 }
1231 if(!selmon->lt[selmon->sellt]->arrange || c->isfloating)
1232 resize(c, nx, ny, c->w, c->h, True);
1233 break;
1234 }
1235 } while(ev.type != ButtonRelease);
1236 XUngrabPointer(dpy, CurrentTime);
1237 if((m = ptrtomon(c->x + c->w / 2, c->y + c->h / 2)) != selmon) {
1238 sendmon(c, m);
1239 selmon = m;
1240 focus(NULL);
1241 }
1242 }
1243
1244 Client *
1245 nexttiled(Client *c) {
1246 for(; c && (c->isfloating || !ISVISIBLE(c)); c = c->next);
1247 return c;
1248 }
1249
1250 void
1251 pop(Client *c) {
1252 detach(c);
1253 attach(c);
1254 focus(c);
1255 arrange(c->mon);
1256 }
1257
1258 void
1259 propertynotify(XEvent *e) {
1260 Client *c;
1261 Window trans;
1262 XPropertyEvent *ev = &e->xproperty;
1263
1264 if((ev->window == root) && (ev->atom == XA_WM_NAME))
1265 updatestatus();
1266 else if(ev->state == PropertyDelete)
1267 return; /* ignore */
1268 else if((c = wintoclient(ev->window))) {
1269 switch(ev->atom) {
1270 default: break;
1271 case XA_WM_TRANSIENT_FOR:
1272 if(!c->isfloating && (XGetTransientForHint(dpy, c->win, &trans)) &&
1273 (c->isfloating = (wintoclient(trans)) != NULL))
1274 arrange(c->mon);
1275 break;
1276 case XA_WM_NORMAL_HINTS:
1277 updatesizehints(c);
1278 break;
1279 case XA_WM_HINTS:
1280 updatewmhints(c);
1281 drawbars();
1282 break;
1283 }
1284 if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
1285 updatetitle(c);
1286 if(c == c->mon->sel)
1287 drawbar(c->mon);
1288 }
1289 }
1290 }
1291
1292 Monitor *
1293 ptrtomon(int x, int y) {
1294 Monitor *m;
1295
1296 for(m = mons; m; m = m->next)
1297 if(INRECT(x, y, m->wx, m->wy, m->ww, m->wh))
1298 return m;
1299 return selmon;
1300 }
1301 void
1302 quit(const Arg *arg) {
1303 running = False;
1304 }
1305
1306 void
1307 resize(Client *c, int x, int y, int w, int h, Bool interact) {
1308 if(applysizehints(c, &x, &y, &w, &h, interact))
1309 resizeclient(c, x, y, w, h);
1310 }
1311
1312 void
1313 resizeclient(Client *c, int x, int y, int w, int h) {
1314 XWindowChanges wc;
1315
1316 c->oldx = c->x; c->x = wc.x = x;
1317 c->oldy = c->y; c->y = wc.y = y;
1318 c->oldw = c->w; c->w = wc.width = w;
1319 c->oldh = c->h; c->h = wc.height = h;
1320 wc.border_width = c->bw;
1321 XConfigureWindow(dpy, c->win, CWX|CWY|CWWidth|CWHeight|CWBorderWidth, &wc);
1322 configure(c);
1323 XSync(dpy, False);
1324 }
1325
1326 void
1327 resizemouse(const Arg *arg) {
1328 int ocx, ocy;
1329 int nw, nh;
1330 Client *c;
1331 Monitor *m;
1332 XEvent ev;
1333
1334 if(!(c = selmon->sel))
1335 return;
1336 restack(selmon);
1337 ocx = c->x;
1338 ocy = c->y;
1339 if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
1340 None, cursor[CurResize], CurrentTime) != GrabSuccess)
1341 return;
1342 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->bw - 1, c->h + c->bw - 1);
1343 do {
1344 XMaskEvent(dpy, MOUSEMASK|ExposureMask|SubstructureRedirectMask, &ev);
1345 switch(ev.type) {
1346 case ConfigureRequest:
1347 case Expose:
1348 case MapRequest:
1349 handler[ev.type](&ev);
1350 break;
1351 case MotionNotify:
1352 nw = MAX(ev.xmotion.x - ocx - 2 * c->bw + 1, 1);
1353 nh = MAX(ev.xmotion.y - ocy - 2 * c->bw + 1, 1);
1354 if(c->mon->wx + nw >= selmon->wx && c->mon->wx + nw <= selmon->wx + selmon->ww
1355 && c->mon->wy + nh >= selmon->wy && c->mon->wy + nh <= selmon->wy + selmon->wh)
1356 {
1357 if(!c->isfloating && selmon->lt[selmon->sellt]->arrange
1358 && (abs(nw - c->w) > snap || abs(nh - c->h) > snap))
1359 togglefloating(NULL);
1360 }
1361 if(!selmon->lt[selmon->sellt]->arrange || c->isfloating)
1362 resize(c, c->x, c->y, nw, nh, True);
1363 break;
1364 }
1365 } while(ev.type != ButtonRelease);
1366 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->bw - 1, c->h + c->bw - 1);
1367 XUngrabPointer(dpy, CurrentTime);
1368 while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
1369 if((m = ptrtomon(c->x + c->w / 2, c->y + c->h / 2)) != selmon) {
1370 sendmon(c, m);
1371 selmon = m;
1372 focus(NULL);
1373 }
1374 }
1375
1376 void
1377 restack(Monitor *m) {
1378 Client *c;
1379 XEvent ev;
1380 XWindowChanges wc;
1381
1382 drawbar(m);
1383 if(!m->sel)
1384 return;
1385 if(m->sel->isfloating || !m->lt[m->sellt]->arrange)
1386 XRaiseWindow(dpy, m->sel->win);
1387 if(m->lt[m->sellt]->arrange) {
1388 wc.stack_mode = Below;
1389 wc.sibling = m->barwin;
1390 for(c = m->stack; c; c = c->snext)
1391 if(!c->isfloating && ISVISIBLE(c)) {
1392 XConfigureWindow(dpy, c->win, CWSibling|CWStackMode, &wc);
1393 wc.sibling = c->win;
1394 }
1395 }
1396 XSync(dpy, False);
1397 while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
1398 }
1399
1400 void
1401 run(void) {
1402 XEvent ev;
1403 /* main event loop */
1404 XSync(dpy, False);
1405 while(running && !XNextEvent(dpy, &ev)) {
1406 if(handler[ev.type])
1407 handler[ev.type](&ev); /* call handler */
1408 }
1409 }
1410
1411 void
1412 scan(void) {
1413 unsigned int i, num;
1414 Window d1, d2, *wins = NULL;
1415 XWindowAttributes wa;
1416
1417 if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
1418 for(i = 0; i < num; i++) {
1419 if(!XGetWindowAttributes(dpy, wins[i], &wa)
1420 || wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
1421 continue;
1422 if(wa.map_state == IsViewable || getstate(wins[i]) == IconicState)
1423 manage(wins[i], &wa);
1424 }
1425 for(i = 0; i < num; i++) { /* now the transients */
1426 if(!XGetWindowAttributes(dpy, wins[i], &wa))
1427 continue;
1428 if(XGetTransientForHint(dpy, wins[i], &d1)
1429 && (wa.map_state == IsViewable || getstate(wins[i]) == IconicState))
1430 manage(wins[i], &wa);
1431 }
1432 if(wins)
1433 XFree(wins);
1434 }
1435 }
1436
1437 void
1438 sendmon(Client *c, Monitor *m) {
1439 if(c->mon == m)
1440 return;
1441 unfocus(c, True);
1442 detach(c);
1443 detachstack(c);
1444 c->mon = m;
1445 c->tags = m->tagset[m->seltags]; /* assign tags of target monitor */
1446 attach(c);
1447 attachstack(c);
1448 focus(NULL);
1449 arrange(NULL);
1450 }
1451
1452 void
1453 setclientstate(Client *c, long state) {
1454 long data[] = { state, None };
1455
1456 XChangeProperty(dpy, c->win, wmatom[WMState], wmatom[WMState], 32,
1457 PropModeReplace, (unsigned char *)data, 2);
1458 }
1459
1460 Bool
1461 sendevent(Client *c, Atom proto) {
1462 int n;
1463 Atom *protocols;
1464 Bool exists = False;
1465 XEvent ev;
1466
1467 if(XGetWMProtocols(dpy, c->win, &protocols, &n)) {
1468 while(!exists && n--)
1469 exists = protocols[n] == proto;
1470 XFree(protocols);
1471 }
1472 if(exists) {
1473 ev.type = ClientMessage;
1474 ev.xclient.window = c->win;
1475 ev.xclient.message_type = wmatom[WMProtocols];
1476 ev.xclient.format = 32;
1477 ev.xclient.data.l[0] = proto;
1478 ev.xclient.data.l[1] = CurrentTime;
1479 XSendEvent(dpy, c->win, False, NoEventMask, &ev);
1480 }
1481 return exists;
1482 }
1483
1484 void
1485 setfocus(Client *c) {
1486 if(!c->neverfocus)
1487 XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
1488 sendevent(c, wmatom[WMTakeFocus]);
1489 }
1490
1491 void
1492 setlayout(const Arg *arg) {
1493 if(!arg || !arg->v || arg->v != selmon->lt[selmon->sellt])
1494 selmon->sellt ^= 1;
1495 if(arg && arg->v)
1496 selmon->lt[selmon->sellt] = (Layout *)arg->v;
1497 strncpy(selmon->ltsymbol, selmon->lt[selmon->sellt]->symbol, sizeof selmon->ltsymbol);
1498 if(selmon->sel)
1499 arrange(selmon);
1500 else
1501 drawbar(selmon);
1502 }
1503
1504 /* arg > 1.0 will set mfact absolutly */
1505 void
1506 setmfact(const Arg *arg) {
1507 float f;
1508
1509 if(!arg || !selmon->lt[selmon->sellt]->arrange)
1510 return;
1511 f = arg->f < 1.0 ? arg->f + selmon->mfact : arg->f - 1.0;
1512 if(f < 0.1 || f > 0.9)
1513 return;
1514 selmon->mfact = f;
1515 arrange(selmon);
1516 }
1517
1518 void
1519 setup(void) {
1520 XSetWindowAttributes wa;
1521
1522 /* clean up any zombies immediately */
1523 sigchld(0);
1524
1525 /* init screen */
1526 screen = DefaultScreen(dpy);
1527 root = RootWindow(dpy, screen);
1528 initfont(font);
1529 sw = DisplayWidth(dpy, screen);
1530 sh = DisplayHeight(dpy, screen);
1531 bh = dc.h = dc.font.height + 2;
1532 updategeom();
1533 /* init atoms */
1534 wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
1535 wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
1536 wmatom[WMState] = XInternAtom(dpy, "WM_STATE", False);
1537 wmatom[WMTakeFocus] = XInternAtom(dpy, "WM_TAKE_FOCUS", False);
1538 netatom[NetActiveWindow] = XInternAtom(dpy, "_NET_ACTIVE_WINDOW", False);
1539 netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
1540 netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
1541 netatom[NetWMState] = XInternAtom(dpy, "_NET_WM_STATE", False);
1542 netatom[NetWMFullscreen] = XInternAtom(dpy, "_NET_WM_STATE_FULLSCREEN", False);
1543 /* init cursors */
1544 cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
1545 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
1546 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
1547 /* init appearance */
1548 dc.norm[ColBorder] = getcolor(normbordercolor);
1549 dc.norm[ColBG] = getcolor(normbgcolor);
1550 dc.norm[ColFG] = getcolor(normfgcolor);
1551 dc.sel[ColBorder] = getcolor(selbordercolor);
1552 dc.sel[ColBG] = getcolor(selbgcolor);
1553 dc.sel[ColFG] = getcolor(selfgcolor);
1554 dc.drawable = XCreatePixmap(dpy, root, DisplayWidth(dpy, screen), bh, DefaultDepth(dpy, screen));
1555 dc.gc = XCreateGC(dpy, root, 0, NULL);
1556 XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
1557 if(!dc.font.set)
1558 XSetFont(dpy, dc.gc, dc.font.xfont->fid);
1559 /* init bars */
1560 updatebars();
1561 updatestatus();
1562 /* EWMH support per view */
1563 XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
1564 PropModeReplace, (unsigned char *) netatom, NetLast);
1565 /* select for events */
1566 wa.cursor = cursor[CurNormal];
1567 wa.event_mask = SubstructureRedirectMask|SubstructureNotifyMask|ButtonPressMask
1568 |EnterWindowMask|LeaveWindowMask|StructureNotifyMask
1569 |PropertyChangeMask;
1570 XChangeWindowAttributes(dpy, root, CWEventMask|CWCursor, &wa);
1571 XSelectInput(dpy, root, wa.event_mask);
1572 grabkeys();
1573 }
1574
1575 void
1576 showhide(Client *c) {
1577 if(!c)
1578 return;
1579 if(ISVISIBLE(c)) { /* show clients top down */
1580 XMoveWindow(dpy, c->win, c->x, c->y);
1581 if((!c->mon->lt[c->mon->sellt]->arrange || c->isfloating) && !c->isfullscreen)
1582 resize(c, c->x, c->y, c->w, c->h, False);
1583 showhide(c->snext);
1584 }
1585 else { /* hide clients bottom up */
1586 showhide(c->snext);
1587 XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
1588 }
1589 }
1590
1591 void
1592 sigchld(int unused) {
1593 if(signal(SIGCHLD, sigchld) == SIG_ERR)
1594 die("Can't install SIGCHLD handler");
1595 while(0 < waitpid(-1, NULL, WNOHANG));
1596 }
1597
1598 void
1599 spawn(const Arg *arg) {
1600 if(fork() == 0) {
1601 if(dpy)
1602 close(ConnectionNumber(dpy));
1603 setsid();
1604 execvp(((char **)arg->v)[0], (char **)arg->v);
1605 fprintf(stderr, "dwm: execvp %s", ((char **)arg->v)[0]);
1606 perror(" failed");
1607 exit(EXIT_SUCCESS);
1608 }
1609 }
1610
1611 void
1612 tag(const Arg *arg) {
1613 if(selmon->sel && arg->ui & TAGMASK) {
1614 selmon->sel->tags = arg->ui & TAGMASK;
1615 arrange(selmon);
1616 }
1617 }
1618
1619 void
1620 tagmon(const Arg *arg) {
1621 if(!selmon->sel || !mons->next)
1622 return;
1623 sendmon(selmon->sel, dirtomon(arg->i));
1624 }
1625
1626 int
1627 textnw(const char *text, unsigned int len) {
1628 XRectangle r;
1629
1630 if(dc.font.set) {
1631 XmbTextExtents(dc.font.set, text, len, NULL, &r);
1632 return r.width;
1633 }
1634 return XTextWidth(dc.font.xfont, text, len);
1635 }
1636
1637 void
1638 tile(Monitor *m) {
1639 int x, y, h, w, mw;
1640 unsigned int i, n;
1641 Client *c;
1642
1643 for(n = 0, c = nexttiled(m->clients); c; c = nexttiled(c->next), n++);
1644 if(n == 0)
1645 return;
1646 /* master */
1647 c = nexttiled(m->clients);
1648 mw = m->mfact * m->ww;
1649 resize(c, m->wx, m->wy, (n == 1 ? m->ww : mw) - 2 * c->bw, m->wh - 2 * c->bw, False);
1650 if(--n == 0)
1651 return;
1652 /* tile stack */
1653 x = (m->wx + mw > c->x + c->w) ? c->x + c->w + 2 * c->bw : m->wx + mw;
1654 y = m->wy;
1655 w = (m->wx + mw > c->x + c->w) ? m->wx + m->ww - x : m->ww - mw;
1656 h = m->wh / n;
1657 if(h < bh)
1658 h = m->wh;
1659 for(i = 0, c = nexttiled(c->next); c; c = nexttiled(c->next), i++) {
1660 resize(c, x, y, w - 2 * c->bw, /* remainder */ ((i + 1 == n)
1661 ? m->wy + m->wh - y - 2 * c->bw : h - 2 * c->bw), False);
1662 if(h != m->wh)
1663 y = c->y + HEIGHT(c);
1664 }
1665 }
1666
1667 void
1668 togglebar(const Arg *arg) {
1669 selmon->showbar = !selmon->showbar;
1670 updatebarpos(selmon);
1671 XMoveResizeWindow(dpy, selmon->barwin, selmon->wx, selmon->by, selmon->ww, bh);
1672 arrange(selmon);
1673 }
1674
1675 void
1676 togglefloating(const Arg *arg) {
1677 if(!selmon->sel)
1678 return;
1679 selmon->sel->isfloating = !selmon->sel->isfloating || selmon->sel->isfixed;
1680 if(selmon->sel->isfloating)
1681 resize(selmon->sel, selmon->sel->x, selmon->sel->y,
1682 selmon->sel->w, selmon->sel->h, False);
1683 arrange(selmon);
1684 }
1685
1686 void
1687 toggletag(const Arg *arg) {
1688 unsigned int newtags;
1689
1690 if(!selmon->sel)
1691 return;
1692 newtags = selmon->sel->tags ^ (arg->ui & TAGMASK);
1693 if(newtags) {
1694 selmon->sel->tags = newtags;
1695 arrange(selmon);
1696 }
1697 }
1698
1699 void
1700 toggleview(const Arg *arg) {
1701 unsigned int newtagset = selmon->tagset[selmon->seltags] ^ (arg->ui & TAGMASK);
1702
1703 if(newtagset) {
1704 selmon->tagset[selmon->seltags] = newtagset;
1705 arrange(selmon);
1706 }
1707 }
1708
1709 void
1710 unfocus(Client *c, Bool setfocus) {
1711 if(!c)
1712 return;
1713 grabbuttons(c, False);
1714 XSetWindowBorder(dpy, c->win, dc.norm[ColBorder]);
1715 if(setfocus)
1716 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
1717 }
1718
1719 void
1720 unmanage(Client *c, Bool destroyed) {
1721 Monitor *m = c->mon;
1722 XWindowChanges wc;
1723
1724 /* The server grab construct avoids race conditions. */
1725 detach(c);
1726 detachstack(c);
1727 if(!destroyed) {
1728 wc.border_width = c->oldbw;
1729 XGrabServer(dpy);
1730 XSetErrorHandler(xerrordummy);
1731 XConfigureWindow(dpy, c->win, CWBorderWidth, &wc); /* restore border */
1732 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
1733 setclientstate(c, WithdrawnState);
1734 XSync(dpy, False);
1735 XSetErrorHandler(xerror);
1736 XUngrabServer(dpy);
1737 }
1738 free(c);
1739 focus(NULL);
1740 arrange(m);
1741 }
1742
1743 void
1744 unmapnotify(XEvent *e) {
1745 Client *c;
1746 XUnmapEvent *ev = &e->xunmap;
1747
1748 if((c = wintoclient(ev->window)))
1749 unmanage(c, False);
1750 }
1751
1752 void
1753 updatebars(void) {
1754 Monitor *m;
1755 XSetWindowAttributes wa = {
1756 .override_redirect = True,
1757 .background_pixmap = ParentRelative,
1758 .event_mask = ButtonPressMask|ExposureMask
1759 };
1760 for(m = mons; m; m = m->next) {
1761 m->barwin = XCreateWindow(dpy, root, m->wx, m->by, m->ww, bh, 0, DefaultDepth(dpy, screen),
1762 CopyFromParent, DefaultVisual(dpy, screen),
1763 CWOverrideRedirect|CWBackPixmap|CWEventMask, &wa);
1764 XDefineCursor(dpy, m->barwin, cursor[CurNormal]);
1765 XMapRaised(dpy, m->barwin);
1766 }
1767 }
1768
1769 void
1770 updatebarpos(Monitor *m) {
1771 m->wy = m->my;
1772 m->wh = m->mh;
1773 if(m->showbar) {
1774 m->wh -= bh;
1775 m->by = m->topbar ? m->wy : m->wy + m->wh;
1776 m->wy = m->topbar ? m->wy + bh : m->wy;
1777 }
1778 else
1779 m->by = -bh;
1780 }
1781
1782 Bool
1783 updategeom(void) {
1784 Bool dirty = False;
1785
1786 #ifdef XINERAMA
1787 if(XineramaIsActive(dpy)) {
1788 int i, j, n, nn;
1789 Client *c;
1790 Monitor *m;
1791 XineramaScreenInfo *info = XineramaQueryScreens(dpy, &nn);
1792 XineramaScreenInfo *unique = NULL;
1793
1794 for(n = 0, m = mons; m; m = m->next, n++);
1795 /* only consider unique geometries as separate screens */
1796 if(!(unique = (XineramaScreenInfo *)malloc(sizeof(XineramaScreenInfo) * nn)))
1797 die("fatal: could not malloc() %u bytes\n", sizeof(XineramaScreenInfo) * nn);
1798 for(i = 0, j = 0; i < nn; i++)
1799 if(isuniquegeom(unique, j, &info[i]))
1800 memcpy(&unique[j++], &info[i], sizeof(XineramaScreenInfo));
1801 XFree(info);
1802 nn = j;
1803 if(n <= nn) {
1804 for(i = 0; i < (nn - n); i++) { /* new monitors available */
1805 for(m = mons; m && m->next; m = m->next);
1806 if(m)
1807 m->next = createmon();
1808 else
1809 mons = createmon();
1810 }
1811 for(i = 0, m = mons; i < nn && m; m = m->next, i++)
1812 if(i >= n
1813 || (unique[i].x_org != m->mx || unique[i].y_org != m->my
1814 || unique[i].width != m->mw || unique[i].height != m->mh))
1815 {
1816 dirty = True;
1817 m->num = i;
1818 m->mx = m->wx = unique[i].x_org;
1819 m->my = m->wy = unique[i].y_org;
1820 m->mw = m->ww = unique[i].width;
1821 m->mh = m->wh = unique[i].height;
1822 updatebarpos(m);
1823 }
1824 }
1825 else { /* less monitors available nn < n */
1826 for(i = nn; i < n; i++) {
1827 for(m = mons; m && m->next; m = m->next);
1828 while(m->clients) {
1829 dirty = True;
1830 c = m->clients;
1831 m->clients = c->next;
1832 detachstack(c);
1833 c->mon = mons;
1834 attach(c);
1835 attachstack(c);
1836 }
1837 if(m == selmon)
1838 selmon = mons;
1839 cleanupmon(m);
1840 }
1841 }
1842 free(unique);
1843 }
1844 else
1845 #endif /* XINERAMA */
1846 /* default monitor setup */
1847 {
1848 if(!mons)
1849 mons = createmon();
1850 if(mons->mw != sw || mons->mh != sh) {
1851 dirty = True;
1852 mons->mw = mons->ww = sw;
1853 mons->mh = mons->wh = sh;
1854 updatebarpos(mons);
1855 }
1856 }
1857 if(dirty) {
1858 selmon = mons;
1859 selmon = wintomon(root);
1860 }
1861 return dirty;
1862 }
1863
1864 void
1865 updatenumlockmask(void) {
1866 unsigned int i, j;
1867 XModifierKeymap *modmap;
1868
1869 numlockmask = 0;
1870 modmap = XGetModifierMapping(dpy);
1871 for(i = 0; i < 8; i++)
1872 for(j = 0; j < modmap->max_keypermod; j++)
1873 if(modmap->modifiermap[i * modmap->max_keypermod + j]
1874 == XKeysymToKeycode(dpy, XK_Num_Lock))
1875 numlockmask = (1 << i);
1876 XFreeModifiermap(modmap);
1877 }
1878
1879 void
1880 updatesizehints(Client *c) {
1881 long msize;
1882 XSizeHints size;
1883
1884 if(!XGetWMNormalHints(dpy, c->win, &size, &msize))
1885 /* size is uninitialized, ensure that size.flags aren't used */
1886 size.flags = PSize;
1887 if(size.flags & PBaseSize) {
1888 c->basew = size.base_width;
1889 c->baseh = size.base_height;
1890 }
1891 else if(size.flags & PMinSize) {
1892 c->basew = size.min_width;
1893 c->baseh = size.min_height;
1894 }
1895 else
1896 c->basew = c->baseh = 0;
1897 if(size.flags & PResizeInc) {
1898 c->incw = size.width_inc;
1899 c->inch = size.height_inc;
1900 }
1901 else
1902 c->incw = c->inch = 0;
1903 if(size.flags & PMaxSize) {
1904 c->maxw = size.max_width;
1905 c->maxh = size.max_height;
1906 }
1907 else
1908 c->maxw = c->maxh = 0;
1909 if(size.flags & PMinSize) {
1910 c->minw = size.min_width;
1911 c->minh = size.min_height;
1912 }
1913 else if(size.flags & PBaseSize) {
1914 c->minw = size.base_width;
1915 c->minh = size.base_height;
1916 }
1917 else
1918 c->minw = c->minh = 0;
1919 if(size.flags & PAspect) {
1920 c->mina = (float)size.min_aspect.y / size.min_aspect.x;
1921 c->maxa = (float)size.max_aspect.x / size.max_aspect.y;
1922 }
1923 else
1924 c->maxa = c->mina = 0.0;
1925 c->isfixed = (c->maxw && c->minw && c->maxh && c->minh
1926 && c->maxw == c->minw && c->maxh == c->minh);
1927 }
1928
1929 void
1930 updatetitle(Client *c) {
1931 if(!gettextprop(c->win, netatom[NetWMName], c->name, sizeof c->name))
1932 gettextprop(c->win, XA_WM_NAME, c->name, sizeof c->name);
1933 if(c->name[0] == '\0') /* hack to mark broken clients */
1934 strcpy(c->name, broken);
1935 }
1936
1937 void
1938 updatestatus(void) {
1939 if(!gettextprop(root, XA_WM_NAME, stext, sizeof(stext)))
1940 strcpy(stext, "dwm-"VERSION);
1941 drawbar(selmon);
1942 }
1943
1944 void
1945 updatewmhints(Client *c) {
1946 XWMHints *wmh;
1947
1948 if((wmh = XGetWMHints(dpy, c->win))) {
1949 if(c == selmon->sel && wmh->flags & XUrgencyHint) {
1950 wmh->flags &= ~XUrgencyHint;
1951 XSetWMHints(dpy, c->win, wmh);
1952 }
1953 else
1954 c->isurgent = (wmh->flags & XUrgencyHint) ? True : False;
1955 if(wmh->flags & InputHint)
1956 c->neverfocus = !wmh->input;
1957 else
1958 c->neverfocus = False;
1959 XFree(wmh);
1960 }
1961 }
1962
1963 void
1964 view(const Arg *arg) {
1965 if((arg->ui & TAGMASK) == selmon->tagset[selmon->seltags])
1966 return;
1967 selmon->seltags ^= 1; /* toggle sel tagset */
1968 if(arg->ui & TAGMASK)
1969 selmon->tagset[selmon->seltags] = arg->ui & TAGMASK;
1970 arrange(selmon);
1971 }
1972
1973 Client *
1974 wintoclient(Window w) {
1975 Client *c;
1976 Monitor *m;
1977
1978 for(m = mons; m; m = m->next)
1979 for(c = m->clients; c; c = c->next)
1980 if(c->win == w)
1981 return c;
1982 return NULL;
1983 }
1984
1985 Monitor *
1986 wintomon(Window w) {
1987 int x, y;
1988 Client *c;
1989 Monitor *m;
1990
1991 if(w == root && getrootptr(&x, &y))
1992 return ptrtomon(x, y);
1993 for(m = mons; m; m = m->next)
1994 if(w == m->barwin)
1995 return m;
1996 if((c = wintoclient(w)))
1997 return c->mon;
1998 return selmon;
1999 }
2000
2001 /* There's no way to check accesses to destroyed windows, thus those cases are
2002 * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
2003 * default error handler, which may call exit. */
2004 int
2005 xerror(Display *dpy, XErrorEvent *ee) {
2006 if(ee->error_code == BadWindow
2007 || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
2008 || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
2009 || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
2010 || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
2011 || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
2012 || (ee->request_code == X_GrabButton && ee->error_code == BadAccess)
2013 || (ee->request_code == X_GrabKey && ee->error_code == BadAccess)
2014 || (ee->request_code == X_CopyArea && ee->error_code == BadDrawable))
2015 return 0;
2016 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
2017 ee->request_code, ee->error_code);
2018 return xerrorxlib(dpy, ee); /* may call exit */
2019 }
2020
2021 int
2022 xerrordummy(Display *dpy, XErrorEvent *ee) {
2023 return 0;
2024 }
2025
2026 /* Startup Error handler to check if another window manager
2027 * is already running. */
2028 int
2029 xerrorstart(Display *dpy, XErrorEvent *ee) {
2030 die("dwm: another window manager is already running\n");
2031 return -1;
2032 }
2033
2034 void
2035 zoom(const Arg *arg) {
2036 Client *c = selmon->sel;
2037
2038 if(!selmon->lt[selmon->sellt]->arrange
2039 || (selmon->sel && selmon->sel->isfloating))
2040 return;
2041 if(c == nexttiled(selmon->clients))
2042 if(!c || !(c = nexttiled(c->next)))
2043 return;
2044 pop(c);
2045 }
2046
2047 int
2048 main(int argc, char *argv[]) {
2049 if(argc == 2 && !strcmp("-v", argv[1]))
2050 die("dwm-"VERSION", © 2006-2011 dwm engineers, see LICENSE for details\n");
2051 else if(argc != 1)
2052 die("usage: dwm [-v]\n");
2053 if(!setlocale(LC_CTYPE, "") || !XSupportsLocale())
2054 fputs("warning: no locale support\n", stderr);
2055 if(!(dpy = XOpenDisplay(NULL)))
2056 die("dwm: cannot open display\n");
2057 checkotherwm();
2058 setup();
2059 scan();
2060 run();
2061 cleanup();
2062 XCloseDisplay(dpy);
2063 return EXIT_SUCCESS;
2064 }