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separate program-specific c99 bool and X11
[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 <stdbool.h>
28 #include <stdio.h>
29 #include <stdlib.h>
30 #include <string.h>
31 #include <unistd.h>
32 #include <sys/types.h>
33 #include <sys/wait.h>
34 #include <X11/cursorfont.h>
35 #include <X11/keysym.h>
36 #include <X11/Xatom.h>
37 #include <X11/Xlib.h>
38 #include <X11/Xproto.h>
39 #include <X11/Xutil.h>
40 #ifdef XINERAMA
41 #include <X11/extensions/Xinerama.h>
42 #endif /* XINERAMA */
43 #include <X11/Xft/Xft.h>
44
45 #include "drw.h"
46 #include "util.h"
47
48 /* macros */
49 #define BUTTONMASK (ButtonPressMask|ButtonReleaseMask)
50 #define CLEANMASK(mask) (mask & ~(numlockmask|LockMask) & (ShiftMask|ControlMask|Mod1Mask|Mod2Mask|Mod3Mask|Mod4Mask|Mod5Mask))
51 #define INTERSECT(x,y,w,h,m) (MAX(0, MIN((x)+(w),(m)->wx+(m)->ww) - MAX((x),(m)->wx)) \
52 * MAX(0, MIN((y)+(h),(m)->wy+(m)->wh) - MAX((y),(m)->wy)))
53 #define ISVISIBLE(C) ((C->tags & C->mon->tagset[C->mon->seltags]))
54 #define LENGTH(X) (sizeof X / sizeof X[0])
55 #define MOUSEMASK (BUTTONMASK|PointerMotionMask)
56 #define WIDTH(X) ((X)->w + 2 * (X)->bw)
57 #define HEIGHT(X) ((X)->h + 2 * (X)->bw)
58 #define TAGMASK ((1 << LENGTH(tags)) - 1)
59 #define TEXTW(X) (drw_text(drw, 0, 0, 0, 0, (X), 0) + drw->fonts[0]->h)
60
61 /* enums */
62 enum { CurNormal, CurResize, CurMove, CurLast }; /* cursor */
63 enum { SchemeNorm, SchemeSel, SchemeLast }; /* color schemes */
64 enum { NetSupported, NetWMName, NetWMState,
65 NetWMFullscreen, NetActiveWindow, NetWMWindowType,
66 NetWMWindowTypeDialog, NetClientList, NetLast }; /* EWMH atoms */
67 enum { WMProtocols, WMDelete, WMState, WMTakeFocus, WMLast }; /* default atoms */
68 enum { ClkTagBar, ClkLtSymbol, ClkStatusText, ClkWinTitle,
69 ClkClientWin, ClkRootWin, ClkLast }; /* clicks */
70
71 typedef union {
72 int i;
73 unsigned int ui;
74 float f;
75 const void *v;
76 } Arg;
77
78 typedef struct {
79 unsigned int click;
80 unsigned int mask;
81 unsigned int button;
82 void (*func)(const Arg *arg);
83 const Arg arg;
84 } Button;
85
86 typedef struct Monitor Monitor;
87 typedef struct Client Client;
88 struct Client {
89 char name[256];
90 float mina, maxa;
91 int x, y, w, h;
92 int oldx, oldy, oldw, oldh;
93 int basew, baseh, incw, inch, maxw, maxh, minw, minh;
94 int bw, oldbw;
95 unsigned int tags;
96 bool isfixed, isfloating, isurgent, neverfocus, oldstate, isfullscreen;
97 Client *next;
98 Client *snext;
99 Monitor *mon;
100 Window win;
101 };
102
103 typedef struct {
104 unsigned int mod;
105 KeySym keysym;
106 void (*func)(const Arg *);
107 const Arg arg;
108 } Key;
109
110 typedef struct {
111 const char *symbol;
112 void (*arrange)(Monitor *);
113 } Layout;
114
115 struct Monitor {
116 char ltsymbol[16];
117 float mfact;
118 int nmaster;
119 int num;
120 int by; /* bar geometry */
121 int mx, my, mw, mh; /* screen size */
122 int wx, wy, ww, wh; /* window area */
123 unsigned int seltags;
124 unsigned int sellt;
125 unsigned int tagset[2];
126 bool showbar;
127 bool topbar;
128 Client *clients;
129 Client *sel;
130 Client *stack;
131 Monitor *next;
132 Window barwin;
133 const Layout *lt[2];
134 };
135
136 typedef struct {
137 const char *class;
138 const char *instance;
139 const char *title;
140 unsigned int tags;
141 bool isfloating;
142 int monitor;
143 } Rule;
144
145 /* function declarations */
146 static void applyrules(Client *c);
147 static bool applysizehints(Client *c, int *x, int *y, int *w, int *h, bool interact);
148 static void arrange(Monitor *m);
149 static void arrangemon(Monitor *m);
150 static void attach(Client *c);
151 static void attachstack(Client *c);
152 static void buttonpress(XEvent *e);
153 static void checkotherwm(void);
154 static void cleanup(void);
155 static void cleanupmon(Monitor *mon);
156 static void clearurgent(Client *c);
157 static void clientmessage(XEvent *e);
158 static void configure(Client *c);
159 static void configurenotify(XEvent *e);
160 static void configurerequest(XEvent *e);
161 static Monitor *createmon(void);
162 static void destroynotify(XEvent *e);
163 static void detach(Client *c);
164 static void detachstack(Client *c);
165 static Monitor *dirtomon(int dir);
166 static void drawbar(Monitor *m);
167 static void drawbars(void);
168 static void enternotify(XEvent *e);
169 static void expose(XEvent *e);
170 static void focus(Client *c);
171 static void focusin(XEvent *e);
172 static void focusmon(const Arg *arg);
173 static void focusstack(const Arg *arg);
174 static bool getrootptr(int *x, int *y);
175 static long getstate(Window w);
176 static bool gettextprop(Window w, Atom atom, char *text, unsigned int size);
177 static void grabbuttons(Client *c, bool focused);
178 static void grabkeys(void);
179 static void incnmaster(const Arg *arg);
180 static void keypress(XEvent *e);
181 static void killclient(const Arg *arg);
182 static void manage(Window w, XWindowAttributes *wa);
183 static void mappingnotify(XEvent *e);
184 static void maprequest(XEvent *e);
185 static void monocle(Monitor *m);
186 static void motionnotify(XEvent *e);
187 static void movemouse(const Arg *arg);
188 static Client *nexttiled(Client *c);
189 static void pop(Client *);
190 static void propertynotify(XEvent *e);
191 static void quit(const Arg *arg);
192 static Monitor *recttomon(int x, int y, int w, int h);
193 static void resize(Client *c, int x, int y, int w, int h, bool interact);
194 static void resizeclient(Client *c, int x, int y, int w, int h);
195 static void resizemouse(const Arg *arg);
196 static void restack(Monitor *m);
197 static void run(void);
198 static void scan(void);
199 static bool sendevent(Client *c, Atom proto);
200 static void sendmon(Client *c, Monitor *m);
201 static void setclientstate(Client *c, long state);
202 static void setfocus(Client *c);
203 static void setfullscreen(Client *c, bool fullscreen);
204 static void setlayout(const Arg *arg);
205 static void setmfact(const Arg *arg);
206 static void setup(void);
207 static void showhide(Client *c);
208 static void sigchld(int unused);
209 static void spawn(const Arg *arg);
210 static void tag(const Arg *arg);
211 static void tagmon(const Arg *arg);
212 static void tile(Monitor *);
213 static void togglebar(const Arg *arg);
214 static void togglefloating(const Arg *arg);
215 static void toggletag(const Arg *arg);
216 static void toggleview(const Arg *arg);
217 static void unfocus(Client *c, bool setfocus);
218 static void unmanage(Client *c, bool destroyed);
219 static void unmapnotify(XEvent *e);
220 static bool updategeom(void);
221 static void updatebarpos(Monitor *m);
222 static void updatebars(void);
223 static void updateclientlist(void);
224 static void updatenumlockmask(void);
225 static void updatesizehints(Client *c);
226 static void updatestatus(void);
227 static void updatewindowtype(Client *c);
228 static void updatetitle(Client *c);
229 static void updatewmhints(Client *c);
230 static void view(const Arg *arg);
231 static Client *wintoclient(Window w);
232 static Monitor *wintomon(Window w);
233 static int xerror(Display *dpy, XErrorEvent *ee);
234 static int xerrordummy(Display *dpy, XErrorEvent *ee);
235 static int xerrorstart(Display *dpy, XErrorEvent *ee);
236 static void zoom(const Arg *arg);
237
238 /* variables */
239 static const char broken[] = "broken";
240 static char stext[256];
241 static int screen;
242 static int sw, sh; /* X display screen geometry width, height */
243 static int bh, blw = 0; /* bar geometry */
244 static int (*xerrorxlib)(Display *, XErrorEvent *);
245 static unsigned int numlockmask = 0;
246 static void (*handler[LASTEvent]) (XEvent *) = {
247 [ButtonPress] = buttonpress,
248 [ClientMessage] = clientmessage,
249 [ConfigureRequest] = configurerequest,
250 [ConfigureNotify] = configurenotify,
251 [DestroyNotify] = destroynotify,
252 [EnterNotify] = enternotify,
253 [Expose] = expose,
254 [FocusIn] = focusin,
255 [KeyPress] = keypress,
256 [MappingNotify] = mappingnotify,
257 [MapRequest] = maprequest,
258 [MotionNotify] = motionnotify,
259 [PropertyNotify] = propertynotify,
260 [UnmapNotify] = unmapnotify
261 };
262 static Atom wmatom[WMLast], netatom[NetLast];
263 static bool running = true;
264 static Cur *cursor[CurLast];
265 static ClrScheme scheme[SchemeLast];
266 static Display *dpy;
267 static Drw *drw;
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 = false;
288 c->tags = 0;
289 XGetClassHint(dpy, c->win, &ch);
290 class = ch.res_class ? ch.res_class : broken;
291 instance = ch.res_name ? ch.res_name : broken;
292
293 for(i = 0; i < LENGTH(rules); i++) {
294 r = &rules[i];
295 if((!r->title || strstr(c->name, r->title))
296 && (!r->class || strstr(class, r->class))
297 && (!r->instance || strstr(instance, r->instance)))
298 {
299 c->isfloating = r->isfloating;
300 c->tags |= r->tags;
301 for(m = mons; m && m->num != r->monitor; m = m->next);
302 if(m)
303 c->mon = m;
304 }
305 }
306 if(ch.res_class)
307 XFree(ch.res_class);
308 if(ch.res_name)
309 XFree(ch.res_name);
310 c->tags = c->tags & TAGMASK ? c->tags & TAGMASK : c->mon->tagset[c->mon->seltags];
311 }
312
313 bool
314 applysizehints(Client *c, int *x, int *y, int *w, int *h, bool interact) {
315 bool baseismin;
316 Monitor *m = c->mon;
317
318 /* set minimum possible */
319 *w = MAX(1, *w);
320 *h = MAX(1, *h);
321 if(interact) {
322 if(*x > sw)
323 *x = sw - WIDTH(c);
324 if(*y > sh)
325 *y = sh - HEIGHT(c);
326 if(*x + *w + 2 * c->bw < 0)
327 *x = 0;
328 if(*y + *h + 2 * c->bw < 0)
329 *y = 0;
330 }
331 else {
332 if(*x >= m->wx + m->ww)
333 *x = m->wx + m->ww - WIDTH(c);
334 if(*y >= m->wy + m->wh)
335 *y = m->wy + m->wh - HEIGHT(c);
336 if(*x + *w + 2 * c->bw <= m->wx)
337 *x = m->wx;
338 if(*y + *h + 2 * c->bw <= m->wy)
339 *y = m->wy;
340 }
341 if(*h < bh)
342 *h = bh;
343 if(*w < bh)
344 *w = bh;
345 if(resizehints || c->isfloating || !c->mon->lt[c->mon->sellt]->arrange) {
346 /* see last two sentences in ICCCM 4.1.2.3 */
347 baseismin = c->basew == c->minw && c->baseh == c->minh;
348 if(!baseismin) { /* temporarily remove base dimensions */
349 *w -= c->basew;
350 *h -= c->baseh;
351 }
352 /* adjust for aspect limits */
353 if(c->mina > 0 && c->maxa > 0) {
354 if(c->maxa < (float)*w / *h)
355 *w = *h * c->maxa + 0.5;
356 else if(c->mina < (float)*h / *w)
357 *h = *w * c->mina + 0.5;
358 }
359 if(baseismin) { /* increment calculation requires this */
360 *w -= c->basew;
361 *h -= c->baseh;
362 }
363 /* adjust for increment value */
364 if(c->incw)
365 *w -= *w % c->incw;
366 if(c->inch)
367 *h -= *h % c->inch;
368 /* restore base dimensions */
369 *w = MAX(*w + c->basew, c->minw);
370 *h = MAX(*h + c->baseh, c->minh);
371 if(c->maxw)
372 *w = MIN(*w, c->maxw);
373 if(c->maxh)
374 *h = MIN(*h, c->maxh);
375 }
376 return *x != c->x || *y != c->y || *w != c->w || *h != c->h;
377 }
378
379 void
380 arrange(Monitor *m) {
381 if(m)
382 showhide(m->stack);
383 else for(m = mons; m; m = m->next)
384 showhide(m->stack);
385 if(m) {
386 arrangemon(m);
387 restack(m);
388 } else for(m = mons; m; m = m->next)
389 arrangemon(m);
390 }
391
392 void
393 arrangemon(Monitor *m) {
394 strncpy(m->ltsymbol, m->lt[m->sellt]->symbol, sizeof m->ltsymbol);
395 if(m->lt[m->sellt]->arrange)
396 m->lt[m->sellt]->arrange(m);
397 }
398
399 void
400 attach(Client *c) {
401 c->next = c->mon->clients;
402 c->mon->clients = c;
403 }
404
405 void
406 attachstack(Client *c) {
407 c->snext = c->mon->stack;
408 c->mon->stack = c;
409 }
410
411 void
412 buttonpress(XEvent *e) {
413 unsigned int i, x, click;
414 Arg arg = {0};
415 Client *c;
416 Monitor *m;
417 XButtonPressedEvent *ev = &e->xbutton;
418
419 click = ClkRootWin;
420 /* focus monitor if necessary */
421 if((m = wintomon(ev->window)) && m != selmon) {
422 unfocus(selmon->sel, true);
423 selmon = m;
424 focus(NULL);
425 }
426 if(ev->window == selmon->barwin) {
427 i = x = 0;
428 do
429 x += TEXTW(tags[i]);
430 while(ev->x >= x && ++i < LENGTH(tags));
431 if(i < LENGTH(tags)) {
432 click = ClkTagBar;
433 arg.ui = 1 << i;
434 }
435 else if(ev->x < x + blw)
436 click = ClkLtSymbol;
437 else if(ev->x > selmon->ww - TEXTW(stext))
438 click = ClkStatusText;
439 else
440 click = ClkWinTitle;
441 }
442 else if((c = wintoclient(ev->window))) {
443 focus(c);
444 click = ClkClientWin;
445 }
446 for(i = 0; i < LENGTH(buttons); i++)
447 if(click == buttons[i].click && buttons[i].func && buttons[i].button == ev->button
448 && CLEANMASK(buttons[i].mask) == CLEANMASK(ev->state))
449 buttons[i].func(click == ClkTagBar && buttons[i].arg.i == 0 ? &arg : &buttons[i].arg);
450 }
451
452 void
453 checkotherwm(void) {
454 xerrorxlib = XSetErrorHandler(xerrorstart);
455 /* this causes an error if some other window manager is running */
456 XSelectInput(dpy, DefaultRootWindow(dpy), SubstructureRedirectMask);
457 XSync(dpy, False);
458 XSetErrorHandler(xerror);
459 XSync(dpy, False);
460 }
461
462 void
463 cleanup(void) {
464 Arg a = {.ui = ~0};
465 Layout foo = { "", NULL };
466 Monitor *m;
467 size_t i;
468
469 view(&a);
470 selmon->lt[selmon->sellt] = &foo;
471 for(m = mons; m; m = m->next)
472 while(m->stack)
473 unmanage(m->stack, false);
474 XUngrabKey(dpy, AnyKey, AnyModifier, root);
475 while(mons)
476 cleanupmon(mons);
477 for(i = 0; i < CurLast; i++)
478 drw_cur_free(drw, cursor[i]);
479 for(i = 0; i < SchemeLast; i++) {
480 drw_clr_free(scheme[i].border);
481 drw_clr_free(scheme[i].bg);
482 drw_clr_free(scheme[i].fg);
483 }
484 drw_free(drw);
485 XSync(dpy, False);
486 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
487 XDeleteProperty(dpy, root, netatom[NetActiveWindow]);
488 }
489
490 void
491 cleanupmon(Monitor *mon) {
492 Monitor *m;
493
494 if(mon == mons)
495 mons = mons->next;
496 else {
497 for(m = mons; m && m->next != mon; m = m->next);
498 m->next = mon->next;
499 }
500 XUnmapWindow(dpy, mon->barwin);
501 XDestroyWindow(dpy, mon->barwin);
502 free(mon);
503 }
504
505 void
506 clearurgent(Client *c) {
507 XWMHints *wmh;
508
509 c->isurgent = false;
510 if(!(wmh = XGetWMHints(dpy, c->win)))
511 return;
512 wmh->flags &= ~XUrgencyHint;
513 XSetWMHints(dpy, c->win, wmh);
514 XFree(wmh);
515 }
516
517 void
518 clientmessage(XEvent *e) {
519 XClientMessageEvent *cme = &e->xclient;
520 Client *c = wintoclient(cme->window);
521
522 if(!c)
523 return;
524 if(cme->message_type == netatom[NetWMState]) {
525 if(cme->data.l[1] == netatom[NetWMFullscreen] || cme->data.l[2] == netatom[NetWMFullscreen])
526 setfullscreen(c, (cme->data.l[0] == 1 /* _NET_WM_STATE_ADD */
527 || (cme->data.l[0] == 2 /* _NET_WM_STATE_TOGGLE */ && !c->isfullscreen)));
528 }
529 else if(cme->message_type == netatom[NetActiveWindow]) {
530 if(!ISVISIBLE(c)) {
531 c->mon->seltags ^= 1;
532 c->mon->tagset[c->mon->seltags] = c->tags;
533 }
534 pop(c);
535 }
536 }
537
538 void
539 configure(Client *c) {
540 XConfigureEvent ce;
541
542 ce.type = ConfigureNotify;
543 ce.display = dpy;
544 ce.event = c->win;
545 ce.window = c->win;
546 ce.x = c->x;
547 ce.y = c->y;
548 ce.width = c->w;
549 ce.height = c->h;
550 ce.border_width = c->bw;
551 ce.above = None;
552 ce.override_redirect = False;
553 XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&ce);
554 }
555
556 void
557 configurenotify(XEvent *e) {
558 Monitor *m;
559 XConfigureEvent *ev = &e->xconfigure;
560 bool dirty;
561
562 /* TODO: updategeom handling sucks, needs to be simplified */
563 if(ev->window == root) {
564 dirty = (sw != ev->width || sh != ev->height);
565 sw = ev->width;
566 sh = ev->height;
567 if(updategeom() || dirty) {
568 drw_resize(drw, sw, bh);
569 updatebars();
570 for(m = mons; m; m = m->next)
571 XMoveResizeWindow(dpy, m->barwin, m->wx, m->by, m->ww, bh);
572 focus(NULL);
573 arrange(NULL);
574 }
575 }
576 }
577
578 void
579 configurerequest(XEvent *e) {
580 Client *c;
581 Monitor *m;
582 XConfigureRequestEvent *ev = &e->xconfigurerequest;
583 XWindowChanges wc;
584
585 if((c = wintoclient(ev->window))) {
586 if(ev->value_mask & CWBorderWidth)
587 c->bw = ev->border_width;
588 else if(c->isfloating || !selmon->lt[selmon->sellt]->arrange) {
589 m = c->mon;
590 if(ev->value_mask & CWX) {
591 c->oldx = c->x;
592 c->x = m->mx + ev->x;
593 }
594 if(ev->value_mask & CWY) {
595 c->oldy = c->y;
596 c->y = m->my + ev->y;
597 }
598 if(ev->value_mask & CWWidth) {
599 c->oldw = c->w;
600 c->w = ev->width;
601 }
602 if(ev->value_mask & CWHeight) {
603 c->oldh = c->h;
604 c->h = ev->height;
605 }
606 if((c->x + c->w) > m->mx + m->mw && c->isfloating)
607 c->x = m->mx + (m->mw / 2 - WIDTH(c) / 2); /* center in x direction */
608 if((c->y + c->h) > m->my + m->mh && c->isfloating)
609 c->y = m->my + (m->mh / 2 - HEIGHT(c) / 2); /* center in y direction */
610 if((ev->value_mask & (CWX|CWY)) && !(ev->value_mask & (CWWidth|CWHeight)))
611 configure(c);
612 if(ISVISIBLE(c))
613 XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
614 }
615 else
616 configure(c);
617 }
618 else {
619 wc.x = ev->x;
620 wc.y = ev->y;
621 wc.width = ev->width;
622 wc.height = ev->height;
623 wc.border_width = ev->border_width;
624 wc.sibling = ev->above;
625 wc.stack_mode = ev->detail;
626 XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
627 }
628 XSync(dpy, False);
629 }
630
631 Monitor *
632 createmon(void) {
633 Monitor *m;
634
635 m = ecalloc(1, sizeof(Monitor));
636 m->tagset[0] = m->tagset[1] = 1;
637 m->mfact = mfact;
638 m->nmaster = nmaster;
639 m->showbar = showbar;
640 m->topbar = topbar;
641 m->lt[0] = &layouts[0];
642 m->lt[1] = &layouts[1 % LENGTH(layouts)];
643 strncpy(m->ltsymbol, layouts[0].symbol, sizeof m->ltsymbol);
644 return m;
645 }
646
647 void
648 destroynotify(XEvent *e) {
649 Client *c;
650 XDestroyWindowEvent *ev = &e->xdestroywindow;
651
652 if((c = wintoclient(ev->window)))
653 unmanage(c, true);
654 }
655
656 void
657 detach(Client *c) {
658 Client **tc;
659
660 for(tc = &c->mon->clients; *tc && *tc != c; tc = &(*tc)->next);
661 *tc = c->next;
662 }
663
664 void
665 detachstack(Client *c) {
666 Client **tc, *t;
667
668 for(tc = &c->mon->stack; *tc && *tc != c; tc = &(*tc)->snext);
669 *tc = c->snext;
670
671 if(c == c->mon->sel) {
672 for(t = c->mon->stack; t && !ISVISIBLE(t); t = t->snext);
673 c->mon->sel = t;
674 }
675 }
676
677 Monitor *
678 dirtomon(int dir) {
679 Monitor *m = NULL;
680
681 if(dir > 0) {
682 if(!(m = selmon->next))
683 m = mons;
684 }
685 else if(selmon == mons)
686 for(m = mons; m->next; m = m->next);
687 else
688 for(m = mons; m->next != selmon; m = m->next);
689 return m;
690 }
691
692 void
693 drawbar(Monitor *m) {
694 int x, xx, w, dx;
695 unsigned int i, occ = 0, urg = 0;
696 Client *c;
697
698 dx = (drw->fonts[0]->ascent + drw->fonts[0]->descent + 2) / 4;
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_setscheme(drw, m->tagset[m->seltags] & 1 << i ? &scheme[SchemeSel] : &scheme[SchemeNorm]);
709 drw_text(drw, x, 0, w, bh, tags[i], urg & 1 << i);
710 drw_rect(drw, x + 1, 1, dx, dx, 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_setscheme(drw, &scheme[SchemeNorm]);
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_setscheme(drw, m == selmon ? &scheme[SchemeSel] : &scheme[SchemeNorm]);
734 drw_text(drw, x, 0, w, bh, m->sel->name, 0);
735 drw_rect(drw, x + 1, 1, dx, dx, m->sel->isfixed, m->sel->isfloating, 0);
736 }
737 else {
738 drw_setscheme(drw, &scheme[SchemeNorm]);
739 drw_rect(drw, x, 0, w, bh, 1, 0, 1);
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, scheme[SchemeSel].border->pix);
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) == True;
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 c = ecalloc(1, sizeof(Client));
1014 c->win = w;
1015 updatetitle(c);
1016 if(XGetTransientForHint(dpy, w, &trans) && (t = wintoclient(trans))) {
1017 c->mon = t->mon;
1018 c->tags = t->tags;
1019 }
1020 else {
1021 c->mon = selmon;
1022 applyrules(c);
1023 }
1024 /* geometry */
1025 c->x = c->oldx = wa->x;
1026 c->y = c->oldy = wa->y;
1027 c->w = c->oldw = wa->width;
1028 c->h = c->oldh = wa->height;
1029 c->oldbw = wa->border_width;
1030
1031 if(c->x + WIDTH(c) > c->mon->mx + c->mon->mw)
1032 c->x = c->mon->mx + c->mon->mw - WIDTH(c);
1033 if(c->y + HEIGHT(c) > c->mon->my + c->mon->mh)
1034 c->y = c->mon->my + c->mon->mh - HEIGHT(c);
1035 c->x = MAX(c->x, c->mon->mx);
1036 /* only fix client y-offset, if the client center might cover the bar */
1037 c->y = MAX(c->y, ((c->mon->by == c->mon->my) && (c->x + (c->w / 2) >= c->mon->wx)
1038 && (c->x + (c->w / 2) < c->mon->wx + c->mon->ww)) ? bh : c->mon->my);
1039 c->bw = borderpx;
1040
1041 wc.border_width = c->bw;
1042 XConfigureWindow(dpy, w, CWBorderWidth, &wc);
1043 XSetWindowBorder(dpy, w, scheme[SchemeNorm].border->pix);
1044 configure(c); /* propagates border_width, if size doesn't change */
1045 updatewindowtype(c);
1046 updatesizehints(c);
1047 updatewmhints(c);
1048 XSelectInput(dpy, w, EnterWindowMask|FocusChangeMask|PropertyChangeMask|StructureNotifyMask);
1049 grabbuttons(c, false);
1050 if(!c->isfloating)
1051 c->isfloating = c->oldstate = trans != None || c->isfixed;
1052 if(c->isfloating)
1053 XRaiseWindow(dpy, c->win);
1054 attach(c);
1055 attachstack(c);
1056 XChangeProperty(dpy, root, netatom[NetClientList], XA_WINDOW, 32, PropModeAppend,
1057 (unsigned char *) &(c->win), 1);
1058 XMoveResizeWindow(dpy, c->win, c->x + 2 * sw, c->y, c->w, c->h); /* some windows require this */
1059 setclientstate(c, NormalState);
1060 if (c->mon == selmon)
1061 unfocus(selmon->sel, false);
1062 c->mon->sel = c;
1063 arrange(c->mon);
1064 XMapWindow(dpy, c->win);
1065 focus(NULL);
1066 }
1067
1068 void
1069 mappingnotify(XEvent *e) {
1070 XMappingEvent *ev = &e->xmapping;
1071
1072 XRefreshKeyboardMapping(ev);
1073 if(ev->request == MappingKeyboard)
1074 grabkeys();
1075 }
1076
1077 void
1078 maprequest(XEvent *e) {
1079 static XWindowAttributes wa;
1080 XMapRequestEvent *ev = &e->xmaprequest;
1081
1082 if(!XGetWindowAttributes(dpy, ev->window, &wa))
1083 return;
1084 if(wa.override_redirect)
1085 return;
1086 if(!wintoclient(ev->window))
1087 manage(ev->window, &wa);
1088 }
1089
1090 void
1091 monocle(Monitor *m) {
1092 unsigned int n = 0;
1093 Client *c;
1094
1095 for(c = m->clients; c; c = c->next)
1096 if(ISVISIBLE(c))
1097 n++;
1098 if(n > 0) /* override layout symbol */
1099 snprintf(m->ltsymbol, sizeof m->ltsymbol, "[%d]", n);
1100 for(c = nexttiled(m->clients); c; c = nexttiled(c->next))
1101 resize(c, m->wx, m->wy, m->ww - 2 * c->bw, m->wh - 2 * c->bw, false);
1102 }
1103
1104 void
1105 motionnotify(XEvent *e) {
1106 static Monitor *mon = NULL;
1107 Monitor *m;
1108 XMotionEvent *ev = &e->xmotion;
1109
1110 if(ev->window != root)
1111 return;
1112 if((m = recttomon(ev->x_root, ev->y_root, 1, 1)) != mon && mon) {
1113 unfocus(selmon->sel, true);
1114 selmon = m;
1115 focus(NULL);
1116 }
1117 mon = m;
1118 }
1119
1120 void
1121 movemouse(const Arg *arg) {
1122 int x, y, ocx, ocy, nx, ny;
1123 Client *c;
1124 Monitor *m;
1125 XEvent ev;
1126 Time lasttime = 0;
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 if ((ev.xmotion.time - lasttime) <= (1000 / 60))
1150 continue;
1151 lasttime = ev.xmotion.time;
1152
1153 nx = ocx + (ev.xmotion.x - x);
1154 ny = ocy + (ev.xmotion.y - y);
1155 if(nx >= selmon->wx && nx <= selmon->wx + selmon->ww
1156 && ny >= selmon->wy && ny <= selmon->wy + selmon->wh) {
1157 if(abs(selmon->wx - nx) < snap)
1158 nx = selmon->wx;
1159 else if(abs((selmon->wx + selmon->ww) - (nx + WIDTH(c))) < snap)
1160 nx = selmon->wx + selmon->ww - WIDTH(c);
1161 if(abs(selmon->wy - ny) < snap)
1162 ny = selmon->wy;
1163 else if(abs((selmon->wy + selmon->wh) - (ny + HEIGHT(c))) < snap)
1164 ny = selmon->wy + selmon->wh - HEIGHT(c);
1165 if(!c->isfloating && selmon->lt[selmon->sellt]->arrange
1166 && (abs(nx - c->x) > snap || abs(ny - c->y) > snap))
1167 togglefloating(NULL);
1168 }
1169 if(!selmon->lt[selmon->sellt]->arrange || c->isfloating)
1170 resize(c, nx, ny, c->w, c->h, true);
1171 break;
1172 }
1173 } while(ev.type != ButtonRelease);
1174 XUngrabPointer(dpy, CurrentTime);
1175 if((m = recttomon(c->x, c->y, c->w, c->h)) != selmon) {
1176 sendmon(c, m);
1177 selmon = m;
1178 focus(NULL);
1179 }
1180 }
1181
1182 Client *
1183 nexttiled(Client *c) {
1184 for(; c && (c->isfloating || !ISVISIBLE(c)); c = c->next);
1185 return c;
1186 }
1187
1188 void
1189 pop(Client *c) {
1190 detach(c);
1191 attach(c);
1192 focus(c);
1193 arrange(c->mon);
1194 }
1195
1196 void
1197 propertynotify(XEvent *e) {
1198 Client *c;
1199 Window trans;
1200 XPropertyEvent *ev = &e->xproperty;
1201
1202 if((ev->window == root) && (ev->atom == XA_WM_NAME))
1203 updatestatus();
1204 else if(ev->state == PropertyDelete)
1205 return; /* ignore */
1206 else if((c = wintoclient(ev->window))) {
1207 switch(ev->atom) {
1208 default: break;
1209 case XA_WM_TRANSIENT_FOR:
1210 if(!c->isfloating && (XGetTransientForHint(dpy, c->win, &trans)) &&
1211 (c->isfloating = (wintoclient(trans)) != NULL))
1212 arrange(c->mon);
1213 break;
1214 case XA_WM_NORMAL_HINTS:
1215 updatesizehints(c);
1216 break;
1217 case XA_WM_HINTS:
1218 updatewmhints(c);
1219 drawbars();
1220 break;
1221 }
1222 if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
1223 updatetitle(c);
1224 if(c == c->mon->sel)
1225 drawbar(c->mon);
1226 }
1227 if(ev->atom == netatom[NetWMWindowType])
1228 updatewindowtype(c);
1229 }
1230 }
1231
1232 void
1233 quit(const Arg *arg) {
1234 running = false;
1235 }
1236
1237 Monitor *
1238 recttomon(int x, int y, int w, int h) {
1239 Monitor *m, *r = selmon;
1240 int a, area = 0;
1241
1242 for(m = mons; m; m = m->next)
1243 if((a = INTERSECT(x, y, w, h, m)) > area) {
1244 area = a;
1245 r = m;
1246 }
1247 return r;
1248 }
1249
1250 void
1251 resize(Client *c, int x, int y, int w, int h, bool interact) {
1252 if(applysizehints(c, &x, &y, &w, &h, interact))
1253 resizeclient(c, x, y, w, h);
1254 }
1255
1256 void
1257 resizeclient(Client *c, int x, int y, int w, int h) {
1258 XWindowChanges wc;
1259
1260 c->oldx = c->x; c->x = wc.x = x;
1261 c->oldy = c->y; c->y = wc.y = y;
1262 c->oldw = c->w; c->w = wc.width = w;
1263 c->oldh = c->h; c->h = wc.height = h;
1264 wc.border_width = c->bw;
1265 XConfigureWindow(dpy, c->win, CWX|CWY|CWWidth|CWHeight|CWBorderWidth, &wc);
1266 configure(c);
1267 XSync(dpy, False);
1268 }
1269
1270 void
1271 resizemouse(const Arg *arg) {
1272 int ocx, ocy, nw, nh;
1273 Client *c;
1274 Monitor *m;
1275 XEvent ev;
1276 Time lasttime = 0;
1277
1278 if(!(c = selmon->sel))
1279 return;
1280 if(c->isfullscreen) /* no support resizing fullscreen windows by mouse */
1281 return;
1282 restack(selmon);
1283 ocx = c->x;
1284 ocy = c->y;
1285 if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
1286 None, cursor[CurResize]->cursor, CurrentTime) != GrabSuccess)
1287 return;
1288 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->bw - 1, c->h + c->bw - 1);
1289 do {
1290 XMaskEvent(dpy, MOUSEMASK|ExposureMask|SubstructureRedirectMask, &ev);
1291 switch(ev.type) {
1292 case ConfigureRequest:
1293 case Expose:
1294 case MapRequest:
1295 handler[ev.type](&ev);
1296 break;
1297 case MotionNotify:
1298 if ((ev.xmotion.time - lasttime) <= (1000 / 60))
1299 continue;
1300 lasttime = ev.xmotion.time;
1301
1302 nw = MAX(ev.xmotion.x - ocx - 2 * c->bw + 1, 1);
1303 nh = MAX(ev.xmotion.y - ocy - 2 * c->bw + 1, 1);
1304 if(c->mon->wx + nw >= selmon->wx && c->mon->wx + nw <= selmon->wx + selmon->ww
1305 && c->mon->wy + nh >= selmon->wy && c->mon->wy + nh <= selmon->wy + selmon->wh)
1306 {
1307 if(!c->isfloating && selmon->lt[selmon->sellt]->arrange
1308 && (abs(nw - c->w) > snap || abs(nh - c->h) > snap))
1309 togglefloating(NULL);
1310 }
1311 if(!selmon->lt[selmon->sellt]->arrange || c->isfloating)
1312 resize(c, c->x, c->y, nw, nh, true);
1313 break;
1314 }
1315 } while(ev.type != ButtonRelease);
1316 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->bw - 1, c->h + c->bw - 1);
1317 XUngrabPointer(dpy, CurrentTime);
1318 while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
1319 if((m = recttomon(c->x, c->y, c->w, c->h)) != selmon) {
1320 sendmon(c, m);
1321 selmon = m;
1322 focus(NULL);
1323 }
1324 }
1325
1326 void
1327 restack(Monitor *m) {
1328 Client *c;
1329 XEvent ev;
1330 XWindowChanges wc;
1331
1332 drawbar(m);
1333 if(!m->sel)
1334 return;
1335 if(m->sel->isfloating || !m->lt[m->sellt]->arrange)
1336 XRaiseWindow(dpy, m->sel->win);
1337 if(m->lt[m->sellt]->arrange) {
1338 wc.stack_mode = Below;
1339 wc.sibling = m->barwin;
1340 for(c = m->stack; c; c = c->snext)
1341 if(!c->isfloating && ISVISIBLE(c)) {
1342 XConfigureWindow(dpy, c->win, CWSibling|CWStackMode, &wc);
1343 wc.sibling = c->win;
1344 }
1345 }
1346 XSync(dpy, False);
1347 while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
1348 }
1349
1350 void
1351 run(void) {
1352 XEvent ev;
1353 /* main event loop */
1354 XSync(dpy, False);
1355 while(running && !XNextEvent(dpy, &ev))
1356 if(handler[ev.type])
1357 handler[ev.type](&ev); /* call handler */
1358 }
1359
1360 void
1361 scan(void) {
1362 unsigned int i, num;
1363 Window d1, d2, *wins = NULL;
1364 XWindowAttributes wa;
1365
1366 if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
1367 for(i = 0; i < num; i++) {
1368 if(!XGetWindowAttributes(dpy, wins[i], &wa)
1369 || wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
1370 continue;
1371 if(wa.map_state == IsViewable || getstate(wins[i]) == IconicState)
1372 manage(wins[i], &wa);
1373 }
1374 for(i = 0; i < num; i++) { /* now the transients */
1375 if(!XGetWindowAttributes(dpy, wins[i], &wa))
1376 continue;
1377 if(XGetTransientForHint(dpy, wins[i], &d1)
1378 && (wa.map_state == IsViewable || getstate(wins[i]) == IconicState))
1379 manage(wins[i], &wa);
1380 }
1381 if(wins)
1382 XFree(wins);
1383 }
1384 }
1385
1386 void
1387 sendmon(Client *c, Monitor *m) {
1388 if(c->mon == m)
1389 return;
1390 unfocus(c, true);
1391 detach(c);
1392 detachstack(c);
1393 c->mon = m;
1394 c->tags = m->tagset[m->seltags]; /* assign tags of target monitor */
1395 attach(c);
1396 attachstack(c);
1397 focus(NULL);
1398 arrange(NULL);
1399 }
1400
1401 void
1402 setclientstate(Client *c, long state) {
1403 long data[] = { state, None };
1404
1405 XChangeProperty(dpy, c->win, wmatom[WMState], wmatom[WMState], 32,
1406 PropModeReplace, (unsigned char *)data, 2);
1407 }
1408
1409 bool
1410 sendevent(Client *c, Atom proto) {
1411 int n;
1412 Atom *protocols;
1413 bool exists = false;
1414 XEvent ev;
1415
1416 if(XGetWMProtocols(dpy, c->win, &protocols, &n)) {
1417 while(!exists && n--)
1418 exists = protocols[n] == proto;
1419 XFree(protocols);
1420 }
1421 if(exists) {
1422 ev.type = ClientMessage;
1423 ev.xclient.window = c->win;
1424 ev.xclient.message_type = wmatom[WMProtocols];
1425 ev.xclient.format = 32;
1426 ev.xclient.data.l[0] = proto;
1427 ev.xclient.data.l[1] = CurrentTime;
1428 XSendEvent(dpy, c->win, False, NoEventMask, &ev);
1429 }
1430 return exists;
1431 }
1432
1433 void
1434 setfocus(Client *c) {
1435 if(!c->neverfocus) {
1436 XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
1437 XChangeProperty(dpy, root, netatom[NetActiveWindow],
1438 XA_WINDOW, 32, PropModeReplace,
1439 (unsigned char *) &(c->win), 1);
1440 }
1441 sendevent(c, wmatom[WMTakeFocus]);
1442 }
1443
1444 void
1445 setfullscreen(Client *c, bool fullscreen) {
1446 if(fullscreen && !c->isfullscreen) {
1447 XChangeProperty(dpy, c->win, netatom[NetWMState], XA_ATOM, 32,
1448 PropModeReplace, (unsigned char*)&netatom[NetWMFullscreen], 1);
1449 c->isfullscreen = true;
1450 c->oldstate = c->isfloating;
1451 c->oldbw = c->bw;
1452 c->bw = 0;
1453 c->isfloating = true;
1454 resizeclient(c, c->mon->mx, c->mon->my, c->mon->mw, c->mon->mh);
1455 XRaiseWindow(dpy, c->win);
1456 }
1457 else if(!fullscreen && c->isfullscreen){
1458 XChangeProperty(dpy, c->win, netatom[NetWMState], XA_ATOM, 32,
1459 PropModeReplace, (unsigned char*)0, 0);
1460 c->isfullscreen = false;
1461 c->isfloating = c->oldstate;
1462 c->bw = c->oldbw;
1463 c->x = c->oldx;
1464 c->y = c->oldy;
1465 c->w = c->oldw;
1466 c->h = c->oldh;
1467 resizeclient(c, c->x, c->y, c->w, c->h);
1468 arrange(c->mon);
1469 }
1470 }
1471
1472 void
1473 setlayout(const Arg *arg) {
1474 if(!arg || !arg->v || arg->v != selmon->lt[selmon->sellt])
1475 selmon->sellt ^= 1;
1476 if(arg && arg->v)
1477 selmon->lt[selmon->sellt] = (Layout *)arg->v;
1478 strncpy(selmon->ltsymbol, selmon->lt[selmon->sellt]->symbol, sizeof selmon->ltsymbol);
1479 if(selmon->sel)
1480 arrange(selmon);
1481 else
1482 drawbar(selmon);
1483 }
1484
1485 /* arg > 1.0 will set mfact absolutly */
1486 void
1487 setmfact(const Arg *arg) {
1488 float f;
1489
1490 if(!arg || !selmon->lt[selmon->sellt]->arrange)
1491 return;
1492 f = arg->f < 1.0 ? arg->f + selmon->mfact : arg->f - 1.0;
1493 if(f < 0.1 || f > 0.9)
1494 return;
1495 selmon->mfact = f;
1496 arrange(selmon);
1497 }
1498
1499 void
1500 setup(void) {
1501 XSetWindowAttributes wa;
1502
1503 /* clean up any zombies immediately */
1504 sigchld(0);
1505
1506 /* init screen */
1507 screen = DefaultScreen(dpy);
1508 sw = DisplayWidth(dpy, screen);
1509 sh = DisplayHeight(dpy, screen);
1510 root = RootWindow(dpy, screen);
1511 drw = drw_create(dpy, screen, root, sw, sh);
1512 drw_load_fonts(drw, fonts, LENGTH(fonts));
1513 if (!drw->fontcount)
1514 die("no fonts could be loaded.\n");
1515 bh = drw->fonts[0]->h + 2;
1516 updategeom();
1517 /* init atoms */
1518 wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
1519 wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
1520 wmatom[WMState] = XInternAtom(dpy, "WM_STATE", False);
1521 wmatom[WMTakeFocus] = XInternAtom(dpy, "WM_TAKE_FOCUS", False);
1522 netatom[NetActiveWindow] = XInternAtom(dpy, "_NET_ACTIVE_WINDOW", False);
1523 netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
1524 netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
1525 netatom[NetWMState] = XInternAtom(dpy, "_NET_WM_STATE", False);
1526 netatom[NetWMFullscreen] = XInternAtom(dpy, "_NET_WM_STATE_FULLSCREEN", False);
1527 netatom[NetWMWindowType] = XInternAtom(dpy, "_NET_WM_WINDOW_TYPE", False);
1528 netatom[NetWMWindowTypeDialog] = XInternAtom(dpy, "_NET_WM_WINDOW_TYPE_DIALOG", False);
1529 netatom[NetClientList] = XInternAtom(dpy, "_NET_CLIENT_LIST", False);
1530 /* init cursors */
1531 cursor[CurNormal] = drw_cur_create(drw, XC_left_ptr);
1532 cursor[CurResize] = drw_cur_create(drw, XC_sizing);
1533 cursor[CurMove] = drw_cur_create(drw, XC_fleur);
1534 /* init appearance */
1535 scheme[SchemeNorm].border = drw_clr_create(drw, normbordercolor);
1536 scheme[SchemeNorm].bg = drw_clr_create(drw, normbgcolor);
1537 scheme[SchemeNorm].fg = drw_clr_create(drw, normfgcolor);
1538 scheme[SchemeSel].border = drw_clr_create(drw, selbordercolor);
1539 scheme[SchemeSel].bg = drw_clr_create(drw, selbgcolor);
1540 scheme[SchemeSel].fg = drw_clr_create(drw, selfgcolor);
1541 /* init bars */
1542 updatebars();
1543 updatestatus();
1544 /* EWMH support per view */
1545 XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
1546 PropModeReplace, (unsigned char *) netatom, NetLast);
1547 XDeleteProperty(dpy, root, netatom[NetClientList]);
1548 /* select for events */
1549 wa.cursor = cursor[CurNormal]->cursor;
1550 wa.event_mask = SubstructureRedirectMask|SubstructureNotifyMask|ButtonPressMask|PointerMotionMask
1551 |EnterWindowMask|LeaveWindowMask|StructureNotifyMask|PropertyChangeMask;
1552 XChangeWindowAttributes(dpy, root, CWEventMask|CWCursor, &wa);
1553 XSelectInput(dpy, root, wa.event_mask);
1554 grabkeys();
1555 focus(NULL);
1556 }
1557
1558 void
1559 showhide(Client *c) {
1560 if(!c)
1561 return;
1562 if(ISVISIBLE(c)) { /* show clients top down */
1563 XMoveWindow(dpy, c->win, c->x, c->y);
1564 if((!c->mon->lt[c->mon->sellt]->arrange || c->isfloating) && !c->isfullscreen)
1565 resize(c, c->x, c->y, c->w, c->h, false);
1566 showhide(c->snext);
1567 }
1568 else { /* hide clients bottom up */
1569 showhide(c->snext);
1570 XMoveWindow(dpy, c->win, WIDTH(c) * -2, c->y);
1571 }
1572 }
1573
1574 void
1575 sigchld(int unused) {
1576 if(signal(SIGCHLD, sigchld) == SIG_ERR)
1577 die("can't install SIGCHLD handler:");
1578 while(0 < waitpid(-1, NULL, WNOHANG));
1579 }
1580
1581 void
1582 spawn(const Arg *arg) {
1583 if(arg->v == dmenucmd)
1584 dmenumon[0] = '0' + selmon->num;
1585 if(fork() == 0) {
1586 if(dpy)
1587 close(ConnectionNumber(dpy));
1588 setsid();
1589 execvp(((char **)arg->v)[0], (char **)arg->v);
1590 fprintf(stderr, "dwm: execvp %s", ((char **)arg->v)[0]);
1591 perror(" failed");
1592 exit(EXIT_SUCCESS);
1593 }
1594 }
1595
1596 void
1597 tag(const Arg *arg) {
1598 if(selmon->sel && arg->ui & TAGMASK) {
1599 selmon->sel->tags = arg->ui & TAGMASK;
1600 focus(NULL);
1601 arrange(selmon);
1602 }
1603 }
1604
1605 void
1606 tagmon(const Arg *arg) {
1607 if(!selmon->sel || !mons->next)
1608 return;
1609 sendmon(selmon->sel, dirtomon(arg->i));
1610 }
1611
1612 void
1613 tile(Monitor *m) {
1614 unsigned int i, n, h, mw, my, ty;
1615 Client *c;
1616
1617 for(n = 0, c = nexttiled(m->clients); c; c = nexttiled(c->next), n++);
1618 if(n == 0)
1619 return;
1620
1621 if(n > m->nmaster)
1622 mw = m->nmaster ? m->ww * m->mfact : 0;
1623 else
1624 mw = m->ww;
1625 for(i = my = ty = 0, c = nexttiled(m->clients); c; c = nexttiled(c->next), i++)
1626 if(i < m->nmaster) {
1627 h = (m->wh - my) / (MIN(n, m->nmaster) - i);
1628 resize(c, m->wx, m->wy + my, mw - (2*c->bw), h - (2*c->bw), false);
1629 my += HEIGHT(c);
1630 }
1631 else {
1632 h = (m->wh - ty) / (n - i);
1633 resize(c, m->wx + mw, m->wy + ty, m->ww - mw - (2*c->bw), h - (2*c->bw), false);
1634 ty += HEIGHT(c);
1635 }
1636 }
1637
1638 void
1639 togglebar(const Arg *arg) {
1640 selmon->showbar = !selmon->showbar;
1641 updatebarpos(selmon);
1642 XMoveResizeWindow(dpy, selmon->barwin, selmon->wx, selmon->by, selmon->ww, bh);
1643 arrange(selmon);
1644 }
1645
1646 void
1647 togglefloating(const Arg *arg) {
1648 if(!selmon->sel)
1649 return;
1650 if(selmon->sel->isfullscreen) /* no support for fullscreen windows */
1651 return;
1652 selmon->sel->isfloating = !selmon->sel->isfloating || selmon->sel->isfixed;
1653 if(selmon->sel->isfloating)
1654 resize(selmon->sel, selmon->sel->x, selmon->sel->y,
1655 selmon->sel->w, selmon->sel->h, false);
1656 arrange(selmon);
1657 }
1658
1659 void
1660 toggletag(const Arg *arg) {
1661 unsigned int newtags;
1662
1663 if(!selmon->sel)
1664 return;
1665 newtags = selmon->sel->tags ^ (arg->ui & TAGMASK);
1666 if(newtags) {
1667 selmon->sel->tags = newtags;
1668 focus(NULL);
1669 arrange(selmon);
1670 }
1671 }
1672
1673 void
1674 toggleview(const Arg *arg) {
1675 unsigned int newtagset = selmon->tagset[selmon->seltags] ^ (arg->ui & TAGMASK);
1676
1677 if(newtagset) {
1678 selmon->tagset[selmon->seltags] = newtagset;
1679 focus(NULL);
1680 arrange(selmon);
1681 }
1682 }
1683
1684 void
1685 unfocus(Client *c, bool setfocus) {
1686 if(!c)
1687 return;
1688 grabbuttons(c, false);
1689 XSetWindowBorder(dpy, c->win, scheme[SchemeNorm].border->pix);
1690 if(setfocus) {
1691 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
1692 XDeleteProperty(dpy, root, netatom[NetActiveWindow]);
1693 }
1694 }
1695
1696 void
1697 unmanage(Client *c, bool destroyed) {
1698 Monitor *m = c->mon;
1699 XWindowChanges wc;
1700
1701 /* The server grab construct avoids race conditions. */
1702 detach(c);
1703 detachstack(c);
1704 if(!destroyed) {
1705 wc.border_width = c->oldbw;
1706 XGrabServer(dpy);
1707 XSetErrorHandler(xerrordummy);
1708 XConfigureWindow(dpy, c->win, CWBorderWidth, &wc); /* restore border */
1709 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
1710 setclientstate(c, WithdrawnState);
1711 XSync(dpy, False);
1712 XSetErrorHandler(xerror);
1713 XUngrabServer(dpy);
1714 }
1715 free(c);
1716 focus(NULL);
1717 updateclientlist();
1718 arrange(m);
1719 }
1720
1721 void
1722 unmapnotify(XEvent *e) {
1723 Client *c;
1724 XUnmapEvent *ev = &e->xunmap;
1725
1726 if((c = wintoclient(ev->window))) {
1727 if(ev->send_event)
1728 setclientstate(c, WithdrawnState);
1729 else
1730 unmanage(c, false);
1731 }
1732 }
1733
1734 void
1735 updatebars(void) {
1736 Monitor *m;
1737 XSetWindowAttributes wa = {
1738 .override_redirect = True,
1739 .background_pixmap = ParentRelative,
1740 .event_mask = ButtonPressMask|ExposureMask
1741 };
1742 for(m = mons; m; m = m->next) {
1743 if (m->barwin)
1744 continue;
1745 m->barwin = XCreateWindow(dpy, root, m->wx, m->by, m->ww, bh, 0, DefaultDepth(dpy, screen),
1746 CopyFromParent, DefaultVisual(dpy, screen),
1747 CWOverrideRedirect|CWBackPixmap|CWEventMask, &wa);
1748 XDefineCursor(dpy, m->barwin, cursor[CurNormal]->cursor);
1749 XMapRaised(dpy, m->barwin);
1750 }
1751 }
1752
1753 void
1754 updatebarpos(Monitor *m) {
1755 m->wy = m->my;
1756 m->wh = m->mh;
1757 if(m->showbar) {
1758 m->wh -= bh;
1759 m->by = m->topbar ? m->wy : m->wy + m->wh;
1760 m->wy = m->topbar ? m->wy + bh : m->wy;
1761 }
1762 else
1763 m->by = -bh;
1764 }
1765
1766 void
1767 updateclientlist() {
1768 Client *c;
1769 Monitor *m;
1770
1771 XDeleteProperty(dpy, root, netatom[NetClientList]);
1772 for(m = mons; m; m = m->next)
1773 for(c = m->clients; c; c = c->next)
1774 XChangeProperty(dpy, root, netatom[NetClientList],
1775 XA_WINDOW, 32, PropModeAppend,
1776 (unsigned char *) &(c->win), 1);
1777 }
1778
1779 bool
1780 updategeom(void) {
1781 bool dirty = false;
1782
1783 #ifdef XINERAMA
1784 if(XineramaIsActive(dpy)) {
1785 int i, j, n, nn;
1786 Client *c;
1787 Monitor *m;
1788 XineramaScreenInfo *info = XineramaQueryScreens(dpy, &nn);
1789 XineramaScreenInfo *unique = NULL;
1790
1791 for(n = 0, m = mons; m; m = m->next, n++);
1792 /* only consider unique geometries as separate screens */
1793 unique = ecalloc(nn, sizeof(XineramaScreenInfo));
1794 for(i = 0, j = 0; i < nn; i++)
1795 if(isuniquegeom(unique, j, &info[i]))
1796 memcpy(&unique[j++], &info[i], sizeof(XineramaScreenInfo));
1797 XFree(info);
1798 nn = j;
1799 if(n <= nn) {
1800 for(i = 0; i < (nn - n); i++) { /* new monitors available */
1801 for(m = mons; m && m->next; m = m->next);
1802 if(m)
1803 m->next = createmon();
1804 else
1805 mons = createmon();
1806 }
1807 for(i = 0, m = mons; i < nn && m; m = m->next, i++)
1808 if(i >= n
1809 || (unique[i].x_org != m->mx || unique[i].y_org != m->my
1810 || unique[i].width != m->mw || unique[i].height != m->mh))
1811 {
1812 dirty = true;
1813 m->num = i;
1814 m->mx = m->wx = unique[i].x_org;
1815 m->my = m->wy = unique[i].y_org;
1816 m->mw = m->ww = unique[i].width;
1817 m->mh = m->wh = unique[i].height;
1818 updatebarpos(m);
1819 }
1820 }
1821 else { /* less monitors available nn < n */
1822 for(i = nn; i < n; i++) {
1823 for(m = mons; m && m->next; m = m->next);
1824 while(m->clients) {
1825 dirty = true;
1826 c = m->clients;
1827 m->clients = c->next;
1828 detachstack(c);
1829 c->mon = mons;
1830 attach(c);
1831 attachstack(c);
1832 }
1833 if(m == selmon)
1834 selmon = mons;
1835 cleanupmon(m);
1836 }
1837 }
1838 free(unique);
1839 }
1840 else
1841 #endif /* XINERAMA */
1842 /* default monitor setup */
1843 {
1844 if(!mons)
1845 mons = createmon();
1846 if(mons->mw != sw || mons->mh != sh) {
1847 dirty = true;
1848 mons->mw = mons->ww = sw;
1849 mons->mh = mons->wh = sh;
1850 updatebarpos(mons);
1851 }
1852 }
1853 if(dirty) {
1854 selmon = mons;
1855 selmon = wintomon(root);
1856 }
1857 return dirty;
1858 }
1859
1860 void
1861 updatenumlockmask(void) {
1862 unsigned int i, j;
1863 XModifierKeymap *modmap;
1864
1865 numlockmask = 0;
1866 modmap = XGetModifierMapping(dpy);
1867 for(i = 0; i < 8; i++)
1868 for(j = 0; j < modmap->max_keypermod; j++)
1869 if(modmap->modifiermap[i * modmap->max_keypermod + j]
1870 == XKeysymToKeycode(dpy, XK_Num_Lock))
1871 numlockmask = (1 << i);
1872 XFreeModifiermap(modmap);
1873 }
1874
1875 void
1876 updatesizehints(Client *c) {
1877 long msize;
1878 XSizeHints size;
1879
1880 if(!XGetWMNormalHints(dpy, c->win, &size, &msize))
1881 /* size is uninitialized, ensure that size.flags aren't used */
1882 size.flags = PSize;
1883 if(size.flags & PBaseSize) {
1884 c->basew = size.base_width;
1885 c->baseh = size.base_height;
1886 }
1887 else if(size.flags & PMinSize) {
1888 c->basew = size.min_width;
1889 c->baseh = size.min_height;
1890 }
1891 else
1892 c->basew = c->baseh = 0;
1893 if(size.flags & PResizeInc) {
1894 c->incw = size.width_inc;
1895 c->inch = size.height_inc;
1896 }
1897 else
1898 c->incw = c->inch = 0;
1899 if(size.flags & PMaxSize) {
1900 c->maxw = size.max_width;
1901 c->maxh = size.max_height;
1902 }
1903 else
1904 c->maxw = c->maxh = 0;
1905 if(size.flags & PMinSize) {
1906 c->minw = size.min_width;
1907 c->minh = size.min_height;
1908 }
1909 else if(size.flags & PBaseSize) {
1910 c->minw = size.base_width;
1911 c->minh = size.base_height;
1912 }
1913 else
1914 c->minw = c->minh = 0;
1915 if(size.flags & PAspect) {
1916 c->mina = (float)size.min_aspect.y / size.min_aspect.x;
1917 c->maxa = (float)size.max_aspect.x / size.max_aspect.y;
1918 }
1919 else
1920 c->maxa = c->mina = 0.0;
1921 c->isfixed = (c->maxw && c->minw && c->maxh && c->minh
1922 && c->maxw == c->minw && c->maxh == c->minh);
1923 }
1924
1925 void
1926 updatetitle(Client *c) {
1927 if(!gettextprop(c->win, netatom[NetWMName], c->name, sizeof c->name))
1928 gettextprop(c->win, XA_WM_NAME, c->name, sizeof c->name);
1929 if(c->name[0] == '\0') /* hack to mark broken clients */
1930 strcpy(c->name, broken);
1931 }
1932
1933 void
1934 updatestatus(void) {
1935 if(!gettextprop(root, XA_WM_NAME, stext, sizeof(stext)))
1936 strcpy(stext, "dwm-"VERSION);
1937 drawbar(selmon);
1938 }
1939
1940 void
1941 updatewindowtype(Client *c) {
1942 Atom state = getatomprop(c, netatom[NetWMState]);
1943 Atom wtype = getatomprop(c, netatom[NetWMWindowType]);
1944
1945 if(state == netatom[NetWMFullscreen])
1946 setfullscreen(c, true);
1947 if(wtype == netatom[NetWMWindowTypeDialog])
1948 c->isfloating = true;
1949 }
1950
1951 void
1952 updatewmhints(Client *c) {
1953 XWMHints *wmh;
1954
1955 if((wmh = XGetWMHints(dpy, c->win))) {
1956 if(c == selmon->sel && wmh->flags & XUrgencyHint) {
1957 wmh->flags &= ~XUrgencyHint;
1958 XSetWMHints(dpy, c->win, wmh);
1959 }
1960 else
1961 c->isurgent = (wmh->flags & XUrgencyHint) ? true : false;
1962 if(wmh->flags & InputHint)
1963 c->neverfocus = !wmh->input;
1964 else
1965 c->neverfocus = false;
1966 XFree(wmh);
1967 }
1968 }
1969
1970 void
1971 view(const Arg *arg) {
1972 if((arg->ui & TAGMASK) == selmon->tagset[selmon->seltags])
1973 return;
1974 selmon->seltags ^= 1; /* toggle sel tagset */
1975 if(arg->ui & TAGMASK)
1976 selmon->tagset[selmon->seltags] = arg->ui & TAGMASK;
1977 focus(NULL);
1978 arrange(selmon);
1979 }
1980
1981 Client *
1982 wintoclient(Window w) {
1983 Client *c;
1984 Monitor *m;
1985
1986 for(m = mons; m; m = m->next)
1987 for(c = m->clients; c; c = c->next)
1988 if(c->win == w)
1989 return c;
1990 return NULL;
1991 }
1992
1993 Monitor *
1994 wintomon(Window w) {
1995 int x, y;
1996 Client *c;
1997 Monitor *m;
1998
1999 if(w == root && getrootptr(&x, &y))
2000 return recttomon(x, y, 1, 1);
2001 for(m = mons; m; m = m->next)
2002 if(w == m->barwin)
2003 return m;
2004 if((c = wintoclient(w)))
2005 return c->mon;
2006 return selmon;
2007 }
2008
2009 /* There's no way to check accesses to destroyed windows, thus those cases are
2010 * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
2011 * default error handler, which may call exit. */
2012 int
2013 xerror(Display *dpy, XErrorEvent *ee) {
2014 if(ee->error_code == BadWindow
2015 || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
2016 || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
2017 || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
2018 || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
2019 || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
2020 || (ee->request_code == X_GrabButton && ee->error_code == BadAccess)
2021 || (ee->request_code == X_GrabKey && ee->error_code == BadAccess)
2022 || (ee->request_code == X_CopyArea && ee->error_code == BadDrawable))
2023 return 0;
2024 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
2025 ee->request_code, ee->error_code);
2026 return xerrorxlib(dpy, ee); /* may call exit */
2027 }
2028
2029 int
2030 xerrordummy(Display *dpy, XErrorEvent *ee) {
2031 return 0;
2032 }
2033
2034 /* Startup Error handler to check if another window manager
2035 * is already running. */
2036 int
2037 xerrorstart(Display *dpy, XErrorEvent *ee) {
2038 die("dwm: another window manager is already running\n");
2039 return -1;
2040 }
2041
2042 void
2043 zoom(const Arg *arg) {
2044 Client *c = selmon->sel;
2045
2046 if(!selmon->lt[selmon->sellt]->arrange
2047 || (selmon->sel && selmon->sel->isfloating))
2048 return;
2049 if(c == nexttiled(selmon->clients))
2050 if(!c || !(c = nexttiled(c->next)))
2051 return;
2052 pop(c);
2053 }
2054
2055 int
2056 main(int argc, char *argv[]) {
2057 if(argc == 2 && !strcmp("-v", argv[1]))
2058 die("dwm-"VERSION", © 2006-2015 dwm engineers, see LICENSE for details\n");
2059 else if(argc != 1)
2060 die("usage: dwm [-v]\n");
2061 if(!setlocale(LC_CTYPE, "") || !XSupportsLocale())
2062 fputs("warning: no locale support\n", stderr);
2063 if(!(dpy = XOpenDisplay(NULL)))
2064 die("dwm: cannot open display\n");
2065 checkotherwm();
2066 setup();
2067 scan();
2068 run();
2069 cleanup();
2070 XCloseDisplay(dpy);
2071 return EXIT_SUCCESS;
2072 }