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