dwm.c - dwm - dynamic window manager
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dwm.c (53272B)
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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 <signal.h>
26 #include <stdarg.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 #include <X11/Xft/Xft.h>
43
44 #include "drw.h"
45 #include "util.h"
46
47 /* macros */
48 #define BUTTONMASK (ButtonPressMask|ButtonReleaseMask)
49 #define CLEANMASK(mask) (mask & ~(numlockmask|LockMask) & (ShiftMask|ControlMask|Mod1Mask|Mod2Mask|Mod3Mask|Mod4Mask|Mod5Mask))
50 #define INTERSECT(x,y,w,h,m) (MAX(0, MIN((x)+(w),(m)->wx+(m)->ww) - MAX((x),(m)->wx)) \
51 * MAX(0, MIN((y)+(h),(m)->wy+(m)->wh) - MAX((y),(m)->wy)))
52 #define ISVISIBLE(C) ((C->tags & C->mon->tagset[C->mon->seltags]))
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_fontset_getwidth(drw, (X)) + lrpad)
58
59 /* enums */
60 enum { CurNormal, CurResize, CurMove, CurLast }; /* cursor */
61 enum { SchemeNorm, SchemeSel }; /* color schemes */
62 enum { NetSupported, NetWMName, NetWMState, NetWMCheck,
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, hintsvalid;
92 int bw, oldbw;
93 unsigned int tags;
94 int 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 int showbar;
125 int 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 int isfloating;
140 int monitor;
141 } Rule;
142
143 /* function declarations */
144 static void applyrules(Client *c);
145 static int applysizehints(Client *c, int *x, int *y, int *w, int *h, int 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 clientmessage(XEvent *e);
155 static void configure(Client *c);
156 static void configurenotify(XEvent *e);
157 static void configurerequest(XEvent *e);
158 static Monitor *createmon(void);
159 static void destroynotify(XEvent *e);
160 static void detach(Client *c);
161 static void detachstack(Client *c);
162 static Monitor *dirtomon(int dir);
163 static void drawbar(Monitor *m);
164 static void drawbars(void);
165 static void enternotify(XEvent *e);
166 static void expose(XEvent *e);
167 static void focus(Client *c);
168 static void focusin(XEvent *e);
169 static void focusmon(const Arg *arg);
170 static void focusstack(const Arg *arg);
171 static Atom getatomprop(Client *c, Atom prop);
172 static int getrootptr(int *x, int *y);
173 static long getstate(Window w);
174 static int gettextprop(Window w, Atom atom, char *text, unsigned int size);
175 static void grabbuttons(Client *c, int 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 *c);
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, int 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 int 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, int fullscreen);
202 static void setlayout(const Arg *arg);
203 static void setmfact(const Arg *arg);
204 static void setup(void);
205 static void seturgent(Client *c, int urg);
206 static void showhide(Client *c);
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 *m);
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, int setfocus);
216 static void unmanage(Client *c, int destroyed);
217 static void unmapnotify(XEvent *e);
218 static void updatebarpos(Monitor *m);
219 static void updatebars(void);
220 static void updateclientlist(void);
221 static int updategeom(void);
222 static void updatenumlockmask(void);
223 static void updatesizehints(Client *c);
224 static void updatestatus(void);
225 static void updatetitle(Client *c);
226 static void updatewindowtype(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; /* bar height */
242 static int lrpad; /* sum of left and right padding for text */
243 static int (*xerrorxlib)(Display *, XErrorEvent *);
244 static unsigned int numlockmask = 0;
245 static void (*handler[LASTEvent]) (XEvent *) = {
246 [ButtonPress] = buttonpress,
247 [ClientMessage] = clientmessage,
248 [ConfigureRequest] = configurerequest,
249 [ConfigureNotify] = configurenotify,
250 [DestroyNotify] = destroynotify,
251 [EnterNotify] = enternotify,
252 [Expose] = expose,
253 [FocusIn] = focusin,
254 [KeyPress] = keypress,
255 [MappingNotify] = mappingnotify,
256 [MapRequest] = maprequest,
257 [MotionNotify] = motionnotify,
258 [PropertyNotify] = propertynotify,
259 [UnmapNotify] = unmapnotify
260 };
261 static Atom wmatom[WMLast], netatom[NetLast];
262 static int running = 1;
263 static Cur *cursor[CurLast];
264 static Clr **scheme;
265 static Display *dpy;
266 static Drw *drw;
267 static Monitor *mons, *selmon;
268 static Window root, wmcheckwin;
269
270 /* configuration, allows nested code to access above variables */
271 #include "config.h"
272
273 /* compile-time check if all tags fit into an unsigned int bit array. */
274 struct NumTags { char limitexceeded[LENGTH(tags) > 31 ? -1 : 1]; };
275
276 /* function implementations */
277 void
278 applyrules(Client *c)
279 {
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 = 0;
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 int
314 applysizehints(Client *c, int *x, int *y, int *w, int *h, int interact)
315 {
316 int baseismin;
317 Monitor *m = c->mon;
318
319 /* set minimum possible */
320 *w = MAX(1, *w);
321 *h = MAX(1, *h);
322 if (interact) {
323 if (*x > sw)
324 *x = sw - WIDTH(c);
325 if (*y > sh)
326 *y = sh - HEIGHT(c);
327 if (*x + *w + 2 * c->bw < 0)
328 *x = 0;
329 if (*y + *h + 2 * c->bw < 0)
330 *y = 0;
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 if (!c->hintsvalid)
347 updatesizehints(c);
348 /* see last two sentences in ICCCM 4.1.2.3 */
349 baseismin = c->basew == c->minw && c->baseh == c->minh;
350 if (!baseismin) { /* temporarily remove base dimensions */
351 *w -= c->basew;
352 *h -= c->baseh;
353 }
354 /* adjust for aspect limits */
355 if (c->mina > 0 && c->maxa > 0) {
356 if (c->maxa < (float)*w / *h)
357 *w = *h * c->maxa + 0.5;
358 else if (c->mina < (float)*h / *w)
359 *h = *w * c->mina + 0.5;
360 }
361 if (baseismin) { /* increment calculation requires this */
362 *w -= c->basew;
363 *h -= c->baseh;
364 }
365 /* adjust for increment value */
366 if (c->incw)
367 *w -= *w % c->incw;
368 if (c->inch)
369 *h -= *h % c->inch;
370 /* restore base dimensions */
371 *w = MAX(*w + c->basew, c->minw);
372 *h = MAX(*h + c->baseh, c->minh);
373 if (c->maxw)
374 *w = MIN(*w, c->maxw);
375 if (c->maxh)
376 *h = MIN(*h, c->maxh);
377 }
378 return *x != c->x || *y != c->y || *w != c->w || *h != c->h;
379 }
380
381 void
382 arrange(Monitor *m)
383 {
384 if (m)
385 showhide(m->stack);
386 else for (m = mons; m; m = m->next)
387 showhide(m->stack);
388 if (m) {
389 arrangemon(m);
390 restack(m);
391 } else for (m = mons; m; m = m->next)
392 arrangemon(m);
393 }
394
395 void
396 arrangemon(Monitor *m)
397 {
398 strncpy(m->ltsymbol, m->lt[m->sellt]->symbol, sizeof m->ltsymbol);
399 if (m->lt[m->sellt]->arrange)
400 m->lt[m->sellt]->arrange(m);
401 }
402
403 void
404 attach(Client *c)
405 {
406 c->next = c->mon->clients;
407 c->mon->clients = c;
408 }
409
410 void
411 attachstack(Client *c)
412 {
413 c->snext = c->mon->stack;
414 c->mon->stack = c;
415 }
416
417 void
418 buttonpress(XEvent *e)
419 {
420 unsigned int i, x, click;
421 Arg arg = {0};
422 Client *c;
423 Monitor *m;
424 XButtonPressedEvent *ev = &e->xbutton;
425
426 click = ClkRootWin;
427 /* focus monitor if necessary */
428 if ((m = wintomon(ev->window)) && m != selmon) {
429 unfocus(selmon->sel, 1);
430 selmon = m;
431 focus(NULL);
432 }
433 if (ev->window == selmon->barwin) {
434 i = x = 0;
435 do
436 x += TEXTW(tags[i]);
437 while (ev->x >= x && ++i < LENGTH(tags));
438 if (i < LENGTH(tags)) {
439 click = ClkTagBar;
440 arg.ui = 1 << i;
441 } else if (ev->x < x + TEXTW(selmon->ltsymbol))
442 click = ClkLtSymbol;
443 else if (ev->x > selmon->ww - (int)TEXTW(stext))
444 click = ClkStatusText;
445 else
446 click = ClkWinTitle;
447 } else if ((c = wintoclient(ev->window))) {
448 focus(c);
449 restack(selmon);
450 XAllowEvents(dpy, ReplayPointer, CurrentTime);
451 click = ClkClientWin;
452 }
453 for (i = 0; i < LENGTH(buttons); i++)
454 if (click == buttons[i].click && buttons[i].func && buttons[i].button == ev->button
455 && CLEANMASK(buttons[i].mask) == CLEANMASK(ev->state))
456 buttons[i].func(click == ClkTagBar && buttons[i].arg.i == 0 ? &arg : &buttons[i].arg);
457 }
458
459 void
460 checkotherwm(void)
461 {
462 xerrorxlib = XSetErrorHandler(xerrorstart);
463 /* this causes an error if some other window manager is running */
464 XSelectInput(dpy, DefaultRootWindow(dpy), SubstructureRedirectMask);
465 XSync(dpy, False);
466 XSetErrorHandler(xerror);
467 XSync(dpy, False);
468 }
469
470 void
471 cleanup(void)
472 {
473 Arg a = {.ui = ~0};
474 Layout foo = { "", NULL };
475 Monitor *m;
476 size_t i;
477
478 view(&a);
479 selmon->lt[selmon->sellt] = &foo;
480 for (m = mons; m; m = m->next)
481 while (m->stack)
482 unmanage(m->stack, 0);
483 XUngrabKey(dpy, AnyKey, AnyModifier, root);
484 while (mons)
485 cleanupmon(mons);
486 for (i = 0; i < CurLast; i++)
487 drw_cur_free(drw, cursor[i]);
488 for (i = 0; i < LENGTH(colors); i++)
489 drw_scm_free(drw, scheme[i], 3);
490 free(scheme);
491 XDestroyWindow(dpy, wmcheckwin);
492 drw_free(drw);
493 XSync(dpy, False);
494 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
495 XDeleteProperty(dpy, root, netatom[NetActiveWindow]);
496 }
497
498 void
499 cleanupmon(Monitor *mon)
500 {
501 Monitor *m;
502
503 if (mon == mons)
504 mons = mons->next;
505 else {
506 for (m = mons; m && m->next != mon; m = m->next);
507 m->next = mon->next;
508 }
509 XUnmapWindow(dpy, mon->barwin);
510 XDestroyWindow(dpy, mon->barwin);
511 free(mon);
512 }
513
514 void
515 clientmessage(XEvent *e)
516 {
517 XClientMessageEvent *cme = &e->xclient;
518 Client *c = wintoclient(cme->window);
519
520 if (!c)
521 return;
522 if (cme->message_type == netatom[NetWMState]) {
523 if (cme->data.l[1] == netatom[NetWMFullscreen]
524 || cme->data.l[2] == netatom[NetWMFullscreen])
525 setfullscreen(c, (cme->data.l[0] == 1 /* _NET_WM_STATE_ADD */
526 || (cme->data.l[0] == 2 /* _NET_WM_STATE_TOGGLE */ && !c->isfullscreen)));
527 } else if (cme->message_type == netatom[NetActiveWindow]) {
528 if (c != selmon->sel && !c->isurgent)
529 seturgent(c, 1);
530 }
531 }
532
533 void
534 configure(Client *c)
535 {
536 XConfigureEvent ce;
537
538 ce.type = ConfigureNotify;
539 ce.display = dpy;
540 ce.event = c->win;
541 ce.window = c->win;
542 ce.x = c->x;
543 ce.y = c->y;
544 ce.width = c->w;
545 ce.height = c->h;
546 ce.border_width = c->bw;
547 ce.above = None;
548 ce.override_redirect = False;
549 XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&ce);
550 }
551
552 void
553 configurenotify(XEvent *e)
554 {
555 Monitor *m;
556 Client *c;
557 XConfigureEvent *ev = &e->xconfigure;
558 int dirty;
559
560 /* TODO: updategeom handling sucks, needs to be simplified */
561 if (ev->window == root) {
562 dirty = (sw != ev->width || sh != ev->height);
563 sw = ev->width;
564 sh = ev->height;
565 if (updategeom() || dirty) {
566 drw_resize(drw, sw, bh);
567 updatebars();
568 for (m = mons; m; m = m->next) {
569 for (c = m->clients; c; c = c->next)
570 if (c->isfullscreen)
571 resizeclient(c, m->mx, m->my, m->mw, m->mh);
572 XMoveResizeWindow(dpy, m->barwin, m->wx, m->by, m->ww, bh);
573 }
574 focus(NULL);
575 arrange(NULL);
576 }
577 }
578 }
579
580 void
581 configurerequest(XEvent *e)
582 {
583 Client *c;
584 Monitor *m;
585 XConfigureRequestEvent *ev = &e->xconfigurerequest;
586 XWindowChanges wc;
587
588 if ((c = wintoclient(ev->window))) {
589 if (ev->value_mask & CWBorderWidth)
590 c->bw = ev->border_width;
591 else if (c->isfloating || !selmon->lt[selmon->sellt]->arrange) {
592 m = c->mon;
593 if (ev->value_mask & CWX) {
594 c->oldx = c->x;
595 c->x = m->mx + ev->x;
596 }
597 if (ev->value_mask & CWY) {
598 c->oldy = c->y;
599 c->y = m->my + ev->y;
600 }
601 if (ev->value_mask & CWWidth) {
602 c->oldw = c->w;
603 c->w = ev->width;
604 }
605 if (ev->value_mask & CWHeight) {
606 c->oldh = c->h;
607 c->h = ev->height;
608 }
609 if ((c->x + c->w) > m->mx + m->mw && c->isfloating)
610 c->x = m->mx + (m->mw / 2 - WIDTH(c) / 2); /* center in x direction */
611 if ((c->y + c->h) > m->my + m->mh && c->isfloating)
612 c->y = m->my + (m->mh / 2 - HEIGHT(c) / 2); /* center in y direction */
613 if ((ev->value_mask & (CWX|CWY)) && !(ev->value_mask & (CWWidth|CWHeight)))
614 configure(c);
615 if (ISVISIBLE(c))
616 XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
617 } else
618 configure(c);
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 {
635 Monitor *m;
636
637 m = ecalloc(1, 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 {
652 Client *c;
653 XDestroyWindowEvent *ev = &e->xdestroywindow;
654
655 if ((c = wintoclient(ev->window)))
656 unmanage(c, 1);
657 }
658
659 void
660 detach(Client *c)
661 {
662 Client **tc;
663
664 for (tc = &c->mon->clients; *tc && *tc != c; tc = &(*tc)->next);
665 *tc = c->next;
666 }
667
668 void
669 detachstack(Client *c)
670 {
671 Client **tc, *t;
672
673 for (tc = &c->mon->stack; *tc && *tc != c; tc = &(*tc)->snext);
674 *tc = c->snext;
675
676 if (c == c->mon->sel) {
677 for (t = c->mon->stack; t && !ISVISIBLE(t); t = t->snext);
678 c->mon->sel = t;
679 }
680 }
681
682 Monitor *
683 dirtomon(int dir)
684 {
685 Monitor *m = NULL;
686
687 if (dir > 0) {
688 if (!(m = selmon->next))
689 m = mons;
690 } else if (selmon == mons)
691 for (m = mons; m->next; m = m->next);
692 else
693 for (m = mons; m->next != selmon; m = m->next);
694 return m;
695 }
696
697 void
698 drawbar(Monitor *m)
699 {
700 int x, w, tw = 0;
701 int boxs = drw->fonts->h / 9;
702 int boxw = drw->fonts->h / 6 + 2;
703 unsigned int i, occ = 0, urg = 0;
704 Client *c;
705
706 if (!m->showbar)
707 return;
708
709 /* draw status first so it can be overdrawn by tags later */
710 if (m == selmon) { /* status is only drawn on selected monitor */
711 drw_setscheme(drw, scheme[SchemeNorm]);
712 tw = TEXTW(stext) - lrpad + 2; /* 2px right padding */
713 drw_text(drw, m->ww - tw, 0, tw, bh, 0, stext, 0);
714 }
715
716 for (c = m->clients; c; c = c->next) {
717 occ |= c->tags;
718 if (c->isurgent)
719 urg |= c->tags;
720 }
721 x = 0;
722 for (i = 0; i < LENGTH(tags); i++) {
723 w = TEXTW(tags[i]);
724 drw_setscheme(drw, scheme[m->tagset[m->seltags] & 1 << i ? SchemeSel : SchemeNorm]);
725 drw_text(drw, x, 0, w, bh, lrpad / 2, tags[i], urg & 1 << i);
726 if (occ & 1 << i)
727 drw_rect(drw, x + boxs, boxs, boxw, boxw,
728 m == selmon && selmon->sel && selmon->sel->tags & 1 << i,
729 urg & 1 << i);
730 x += w;
731 }
732 w = TEXTW(m->ltsymbol);
733 drw_setscheme(drw, scheme[SchemeNorm]);
734 x = drw_text(drw, x, 0, w, bh, lrpad / 2, m->ltsymbol, 0);
735
736 if ((w = m->ww - tw - x) > bh) {
737 if (m->sel) {
738 drw_setscheme(drw, scheme[m == selmon ? SchemeSel : SchemeNorm]);
739 drw_text(drw, x, 0, w, bh, lrpad / 2, m->sel->name, 0);
740 if (m->sel->isfloating)
741 drw_rect(drw, x + boxs, boxs, boxw, boxw, m->sel->isfixed, 0);
742 } else {
743 drw_setscheme(drw, scheme[SchemeNorm]);
744 drw_rect(drw, x, 0, w, bh, 1, 1);
745 }
746 }
747 drw_map(drw, m->barwin, 0, 0, m->ww, bh);
748 }
749
750 void
751 drawbars(void)
752 {
753 Monitor *m;
754
755 for (m = mons; m; m = m->next)
756 drawbar(m);
757 }
758
759 void
760 enternotify(XEvent *e)
761 {
762 Client *c;
763 Monitor *m;
764 XCrossingEvent *ev = &e->xcrossing;
765
766 if ((ev->mode != NotifyNormal || ev->detail == NotifyInferior) && ev->window != root)
767 return;
768 c = wintoclient(ev->window);
769 m = c ? c->mon : wintomon(ev->window);
770 if (m != selmon) {
771 unfocus(selmon->sel, 1);
772 selmon = m;
773 } else if (!c || c == selmon->sel)
774 return;
775 focus(c);
776 }
777
778 void
779 expose(XEvent *e)
780 {
781 Monitor *m;
782 XExposeEvent *ev = &e->xexpose;
783
784 if (ev->count == 0 && (m = wintomon(ev->window)))
785 drawbar(m);
786 }
787
788 void
789 focus(Client *c)
790 {
791 if (!c || !ISVISIBLE(c))
792 for (c = selmon->stack; c && !ISVISIBLE(c); c = c->snext);
793 if (selmon->sel && selmon->sel != c)
794 unfocus(selmon->sel, 0);
795 if (c) {
796 if (c->mon != selmon)
797 selmon = c->mon;
798 if (c->isurgent)
799 seturgent(c, 0);
800 detachstack(c);
801 attachstack(c);
802 grabbuttons(c, 1);
803 XSetWindowBorder(dpy, c->win, scheme[SchemeSel][ColBorder].pixel);
804 setfocus(c);
805 } else {
806 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
807 XDeleteProperty(dpy, root, netatom[NetActiveWindow]);
808 }
809 selmon->sel = c;
810 drawbars();
811 }
812
813 /* there are some broken focus acquiring clients needing extra handling */
814 void
815 focusin(XEvent *e)
816 {
817 XFocusChangeEvent *ev = &e->xfocus;
818
819 if (selmon->sel && ev->window != selmon->sel->win)
820 setfocus(selmon->sel);
821 }
822
823 void
824 focusmon(const Arg *arg)
825 {
826 Monitor *m;
827
828 if (!mons->next)
829 return;
830 if ((m = dirtomon(arg->i)) == selmon)
831 return;
832 unfocus(selmon->sel, 0);
833 selmon = m;
834 focus(NULL);
835 }
836
837 void
838 focusstack(const Arg *arg)
839 {
840 Client *c = NULL, *i;
841
842 if (!selmon->sel || (selmon->sel->isfullscreen && lockfullscreen))
843 return;
844 if (arg->i > 0) {
845 for (c = selmon->sel->next; c && !ISVISIBLE(c); c = c->next);
846 if (!c)
847 for (c = selmon->clients; c && !ISVISIBLE(c); c = c->next);
848 } else {
849 for (i = selmon->clients; i != selmon->sel; i = i->next)
850 if (ISVISIBLE(i))
851 c = i;
852 if (!c)
853 for (; i; i = i->next)
854 if (ISVISIBLE(i))
855 c = i;
856 }
857 if (c) {
858 focus(c);
859 restack(selmon);
860 }
861 }
862
863 Atom
864 getatomprop(Client *c, Atom prop)
865 {
866 int di;
867 unsigned long dl;
868 unsigned char *p = NULL;
869 Atom da, atom = None;
870
871 if (XGetWindowProperty(dpy, c->win, prop, 0L, sizeof atom, False, XA_ATOM,
872 &da, &di, &dl, &dl, &p) == Success && p) {
873 atom = *(Atom *)p;
874 XFree(p);
875 }
876 return atom;
877 }
878
879 int
880 getrootptr(int *x, int *y)
881 {
882 int di;
883 unsigned int dui;
884 Window dummy;
885
886 return XQueryPointer(dpy, root, &dummy, &dummy, x, y, &di, &di, &dui);
887 }
888
889 long
890 getstate(Window w)
891 {
892 int format;
893 long result = -1;
894 unsigned char *p = NULL;
895 unsigned long n, extra;
896 Atom real;
897
898 if (XGetWindowProperty(dpy, w, wmatom[WMState], 0L, 2L, False, wmatom[WMState],
899 &real, &format, &n, &extra, (unsigned char **)&p) != Success)
900 return -1;
901 if (n != 0)
902 result = *p;
903 XFree(p);
904 return result;
905 }
906
907 int
908 gettextprop(Window w, Atom atom, char *text, unsigned int size)
909 {
910 char **list = NULL;
911 int n;
912 XTextProperty name;
913
914 if (!text || size == 0)
915 return 0;
916 text[0] = '\0';
917 if (!XGetTextProperty(dpy, w, &name, atom) || !name.nitems)
918 return 0;
919 if (name.encoding == XA_STRING) {
920 strncpy(text, (char *)name.value, size - 1);
921 } else if (XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success && n > 0 && *list) {
922 strncpy(text, *list, size - 1);
923 XFreeStringList(list);
924 }
925 text[size - 1] = '\0';
926 XFree(name.value);
927 return 1;
928 }
929
930 void
931 grabbuttons(Client *c, int focused)
932 {
933 updatenumlockmask();
934 {
935 unsigned int i, j;
936 unsigned int modifiers[] = { 0, LockMask, numlockmask, numlockmask|LockMask };
937 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
938 if (!focused)
939 XGrabButton(dpy, AnyButton, AnyModifier, c->win, False,
940 BUTTONMASK, GrabModeSync, GrabModeSync, None, None);
941 for (i = 0; i < LENGTH(buttons); i++)
942 if (buttons[i].click == ClkClientWin)
943 for (j = 0; j < LENGTH(modifiers); j++)
944 XGrabButton(dpy, buttons[i].button,
945 buttons[i].mask | modifiers[j],
946 c->win, False, BUTTONMASK,
947 GrabModeAsync, GrabModeSync, None, None);
948 }
949 }
950
951 void
952 grabkeys(void)
953 {
954 updatenumlockmask();
955 {
956 unsigned int i, j, k;
957 unsigned int modifiers[] = { 0, LockMask, numlockmask, numlockmask|LockMask };
958 int start, end, skip;
959 KeySym *syms;
960
961 XUngrabKey(dpy, AnyKey, AnyModifier, root);
962 XDisplayKeycodes(dpy, &start, &end);
963 syms = XGetKeyboardMapping(dpy, start, end - start + 1, &skip);
964 if (!syms)
965 return;
966 for (k = start; k <= end; k++)
967 for (i = 0; i < LENGTH(keys); i++)
968 /* skip modifier codes, we do that ourselves */
969 if (keys[i].keysym == syms[(k - start) * skip])
970 for (j = 0; j < LENGTH(modifiers); j++)
971 XGrabKey(dpy, k,
972 keys[i].mod | modifiers[j],
973 root, True,
974 GrabModeAsync, GrabModeAsync);
975 XFree(syms);
976 }
977 }
978
979 void
980 incnmaster(const Arg *arg)
981 {
982 selmon->nmaster = MAX(selmon->nmaster + arg->i, 0);
983 arrange(selmon);
984 }
985
986 #ifdef XINERAMA
987 static int
988 isuniquegeom(XineramaScreenInfo *unique, size_t n, XineramaScreenInfo *info)
989 {
990 while (n--)
991 if (unique[n].x_org == info->x_org && unique[n].y_org == info->y_org
992 && unique[n].width == info->width && unique[n].height == info->height)
993 return 0;
994 return 1;
995 }
996 #endif /* XINERAMA */
997
998 void
999 keypress(XEvent *e)
1000 {
1001 unsigned int i;
1002 KeySym keysym;
1003 XKeyEvent *ev;
1004
1005 ev = &e->xkey;
1006 keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
1007 for (i = 0; i < LENGTH(keys); i++)
1008 if (keysym == keys[i].keysym
1009 && CLEANMASK(keys[i].mod) == CLEANMASK(ev->state)
1010 && keys[i].func)
1011 keys[i].func(&(keys[i].arg));
1012 }
1013
1014 void
1015 killclient(const Arg *arg)
1016 {
1017 if (!selmon->sel)
1018 return;
1019 if (!sendevent(selmon->sel, wmatom[WMDelete])) {
1020 XGrabServer(dpy);
1021 XSetErrorHandler(xerrordummy);
1022 XSetCloseDownMode(dpy, DestroyAll);
1023 XKillClient(dpy, selmon->sel->win);
1024 XSync(dpy, False);
1025 XSetErrorHandler(xerror);
1026 XUngrabServer(dpy);
1027 }
1028 }
1029
1030 void
1031 manage(Window w, XWindowAttributes *wa)
1032 {
1033 Client *c, *t = NULL;
1034 Window trans = None;
1035 XWindowChanges wc;
1036
1037 c = ecalloc(1, sizeof(Client));
1038 c->win = w;
1039 /* geometry */
1040 c->x = c->oldx = wa->x;
1041 c->y = c->oldy = wa->y;
1042 c->w = c->oldw = wa->width;
1043 c->h = c->oldh = wa->height;
1044 c->oldbw = wa->border_width;
1045
1046 updatetitle(c);
1047 if (XGetTransientForHint(dpy, w, &trans) && (t = wintoclient(trans))) {
1048 c->mon = t->mon;
1049 c->tags = t->tags;
1050 } else {
1051 c->mon = selmon;
1052 applyrules(c);
1053 }
1054
1055 if (c->x + WIDTH(c) > c->mon->wx + c->mon->ww)
1056 c->x = c->mon->wx + c->mon->ww - WIDTH(c);
1057 if (c->y + HEIGHT(c) > c->mon->wy + c->mon->wh)
1058 c->y = c->mon->wy + c->mon->wh - HEIGHT(c);
1059 c->x = MAX(c->x, c->mon->wx);
1060 c->y = MAX(c->y, c->mon->wy);
1061 c->bw = borderpx;
1062
1063 wc.border_width = c->bw;
1064 XConfigureWindow(dpy, w, CWBorderWidth, &wc);
1065 XSetWindowBorder(dpy, w, scheme[SchemeNorm][ColBorder].pixel);
1066 configure(c); /* propagates border_width, if size doesn't change */
1067 updatewindowtype(c);
1068 updatesizehints(c);
1069 updatewmhints(c);
1070 XSelectInput(dpy, w, EnterWindowMask|FocusChangeMask|PropertyChangeMask|StructureNotifyMask);
1071 grabbuttons(c, 0);
1072 if (!c->isfloating)
1073 c->isfloating = c->oldstate = trans != None || c->isfixed;
1074 if (c->isfloating)
1075 XRaiseWindow(dpy, c->win);
1076 attach(c);
1077 attachstack(c);
1078 XChangeProperty(dpy, root, netatom[NetClientList], XA_WINDOW, 32, PropModeAppend,
1079 (unsigned char *) &(c->win), 1);
1080 XMoveResizeWindow(dpy, c->win, c->x + 2 * sw, c->y, c->w, c->h); /* some windows require this */
1081 setclientstate(c, NormalState);
1082 if (c->mon == selmon)
1083 unfocus(selmon->sel, 0);
1084 c->mon->sel = c;
1085 arrange(c->mon);
1086 XMapWindow(dpy, c->win);
1087 focus(NULL);
1088 }
1089
1090 void
1091 mappingnotify(XEvent *e)
1092 {
1093 XMappingEvent *ev = &e->xmapping;
1094
1095 XRefreshKeyboardMapping(ev);
1096 if (ev->request == MappingKeyboard)
1097 grabkeys();
1098 }
1099
1100 void
1101 maprequest(XEvent *e)
1102 {
1103 static XWindowAttributes wa;
1104 XMapRequestEvent *ev = &e->xmaprequest;
1105
1106 if (!XGetWindowAttributes(dpy, ev->window, &wa) || wa.override_redirect)
1107 return;
1108 if (!wintoclient(ev->window))
1109 manage(ev->window, &wa);
1110 }
1111
1112 void
1113 monocle(Monitor *m)
1114 {
1115 unsigned int n = 0;
1116 Client *c;
1117
1118 for (c = m->clients; c; c = c->next)
1119 if (ISVISIBLE(c))
1120 n++;
1121 if (n > 0) /* override layout symbol */
1122 snprintf(m->ltsymbol, sizeof m->ltsymbol, "[%d]", n);
1123 for (c = nexttiled(m->clients); c; c = nexttiled(c->next))
1124 resize(c, m->wx, m->wy, m->ww - 2 * c->bw, m->wh - 2 * c->bw, 0);
1125 }
1126
1127 void
1128 motionnotify(XEvent *e)
1129 {
1130 static Monitor *mon = NULL;
1131 Monitor *m;
1132 XMotionEvent *ev = &e->xmotion;
1133
1134 if (ev->window != root)
1135 return;
1136 if ((m = recttomon(ev->x_root, ev->y_root, 1, 1)) != mon && mon) {
1137 unfocus(selmon->sel, 1);
1138 selmon = m;
1139 focus(NULL);
1140 }
1141 mon = m;
1142 }
1143
1144 void
1145 movemouse(const Arg *arg)
1146 {
1147 int x, y, ocx, ocy, nx, ny;
1148 Client *c;
1149 Monitor *m;
1150 XEvent ev;
1151 Time lasttime = 0;
1152
1153 if (!(c = selmon->sel))
1154 return;
1155 if (c->isfullscreen) /* no support moving fullscreen windows by mouse */
1156 return;
1157 restack(selmon);
1158 ocx = c->x;
1159 ocy = c->y;
1160 if (XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
1161 None, cursor[CurMove]->cursor, CurrentTime) != GrabSuccess)
1162 return;
1163 if (!getrootptr(&x, &y))
1164 return;
1165 do {
1166 XMaskEvent(dpy, MOUSEMASK|ExposureMask|SubstructureRedirectMask, &ev);
1167 switch(ev.type) {
1168 case ConfigureRequest:
1169 case Expose:
1170 case MapRequest:
1171 handler[ev.type](&ev);
1172 break;
1173 case MotionNotify:
1174 if ((ev.xmotion.time - lasttime) <= (1000 / refreshrate))
1175 continue;
1176 lasttime = ev.xmotion.time;
1177
1178 nx = ocx + (ev.xmotion.x - x);
1179 ny = ocy + (ev.xmotion.y - y);
1180 if (abs(selmon->wx - nx) < snap)
1181 nx = selmon->wx;
1182 else if (abs((selmon->wx + selmon->ww) - (nx + WIDTH(c))) < snap)
1183 nx = selmon->wx + selmon->ww - WIDTH(c);
1184 if (abs(selmon->wy - ny) < snap)
1185 ny = selmon->wy;
1186 else if (abs((selmon->wy + selmon->wh) - (ny + HEIGHT(c))) < snap)
1187 ny = selmon->wy + selmon->wh - HEIGHT(c);
1188 if (!c->isfloating && selmon->lt[selmon->sellt]->arrange
1189 && (abs(nx - c->x) > snap || abs(ny - c->y) > snap))
1190 togglefloating(NULL);
1191 if (!selmon->lt[selmon->sellt]->arrange || c->isfloating)
1192 resize(c, nx, ny, c->w, c->h, 1);
1193 break;
1194 }
1195 } while (ev.type != ButtonRelease);
1196 XUngrabPointer(dpy, CurrentTime);
1197 if ((m = recttomon(c->x, c->y, c->w, c->h)) != selmon) {
1198 sendmon(c, m);
1199 selmon = m;
1200 focus(NULL);
1201 }
1202 }
1203
1204 Client *
1205 nexttiled(Client *c)
1206 {
1207 for (; c && (c->isfloating || !ISVISIBLE(c)); c = c->next);
1208 return c;
1209 }
1210
1211 void
1212 pop(Client *c)
1213 {
1214 detach(c);
1215 attach(c);
1216 focus(c);
1217 arrange(c->mon);
1218 }
1219
1220 void
1221 propertynotify(XEvent *e)
1222 {
1223 Client *c;
1224 Window trans;
1225 XPropertyEvent *ev = &e->xproperty;
1226
1227 if ((ev->window == root) && (ev->atom == XA_WM_NAME))
1228 updatestatus();
1229 else if (ev->state == PropertyDelete)
1230 return; /* ignore */
1231 else if ((c = wintoclient(ev->window))) {
1232 switch(ev->atom) {
1233 default: break;
1234 case XA_WM_TRANSIENT_FOR:
1235 if (!c->isfloating && (XGetTransientForHint(dpy, c->win, &trans)) &&
1236 (c->isfloating = (wintoclient(trans)) != NULL))
1237 arrange(c->mon);
1238 break;
1239 case XA_WM_NORMAL_HINTS:
1240 c->hintsvalid = 0;
1241 break;
1242 case XA_WM_HINTS:
1243 updatewmhints(c);
1244 drawbars();
1245 break;
1246 }
1247 if (ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
1248 updatetitle(c);
1249 if (c == c->mon->sel)
1250 drawbar(c->mon);
1251 }
1252 if (ev->atom == netatom[NetWMWindowType])
1253 updatewindowtype(c);
1254 }
1255 }
1256
1257 void
1258 quit(const Arg *arg)
1259 {
1260 running = 0;
1261 }
1262
1263 Monitor *
1264 recttomon(int x, int y, int w, int h)
1265 {
1266 Monitor *m, *r = selmon;
1267 int a, area = 0;
1268
1269 for (m = mons; m; m = m->next)
1270 if ((a = INTERSECT(x, y, w, h, m)) > area) {
1271 area = a;
1272 r = m;
1273 }
1274 return r;
1275 }
1276
1277 void
1278 resize(Client *c, int x, int y, int w, int h, int interact)
1279 {
1280 if (applysizehints(c, &x, &y, &w, &h, interact))
1281 resizeclient(c, x, y, w, h);
1282 }
1283
1284 void
1285 resizeclient(Client *c, int x, int y, int w, int h)
1286 {
1287 XWindowChanges wc;
1288
1289 c->oldx = c->x; c->x = wc.x = x;
1290 c->oldy = c->y; c->y = wc.y = y;
1291 c->oldw = c->w; c->w = wc.width = w;
1292 c->oldh = c->h; c->h = wc.height = h;
1293 wc.border_width = c->bw;
1294 XConfigureWindow(dpy, c->win, CWX|CWY|CWWidth|CWHeight|CWBorderWidth, &wc);
1295 configure(c);
1296 XSync(dpy, False);
1297 }
1298
1299 void
1300 resizemouse(const Arg *arg)
1301 {
1302 int ocx, ocy, nw, nh;
1303 Client *c;
1304 Monitor *m;
1305 XEvent ev;
1306 Time lasttime = 0;
1307
1308 if (!(c = selmon->sel))
1309 return;
1310 if (c->isfullscreen) /* no support resizing fullscreen windows by mouse */
1311 return;
1312 restack(selmon);
1313 ocx = c->x;
1314 ocy = c->y;
1315 if (XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
1316 None, cursor[CurResize]->cursor, CurrentTime) != GrabSuccess)
1317 return;
1318 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->bw - 1, c->h + c->bw - 1);
1319 do {
1320 XMaskEvent(dpy, MOUSEMASK|ExposureMask|SubstructureRedirectMask, &ev);
1321 switch(ev.type) {
1322 case ConfigureRequest:
1323 case Expose:
1324 case MapRequest:
1325 handler[ev.type](&ev);
1326 break;
1327 case MotionNotify:
1328 if ((ev.xmotion.time - lasttime) <= (1000 / refreshrate))
1329 continue;
1330 lasttime = ev.xmotion.time;
1331
1332 nw = MAX(ev.xmotion.x - ocx - 2 * c->bw + 1, 1);
1333 nh = MAX(ev.xmotion.y - ocy - 2 * c->bw + 1, 1);
1334 if (c->mon->wx + nw >= selmon->wx && c->mon->wx + nw <= selmon->wx + selmon->ww
1335 && c->mon->wy + nh >= selmon->wy && c->mon->wy + nh <= selmon->wy + selmon->wh)
1336 {
1337 if (!c->isfloating && selmon->lt[selmon->sellt]->arrange
1338 && (abs(nw - c->w) > snap || abs(nh - c->h) > snap))
1339 togglefloating(NULL);
1340 }
1341 if (!selmon->lt[selmon->sellt]->arrange || c->isfloating)
1342 resize(c, c->x, c->y, nw, nh, 1);
1343 break;
1344 }
1345 } while (ev.type != ButtonRelease);
1346 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->bw - 1, c->h + c->bw - 1);
1347 XUngrabPointer(dpy, CurrentTime);
1348 while (XCheckMaskEvent(dpy, EnterWindowMask, &ev));
1349 if ((m = recttomon(c->x, c->y, c->w, c->h)) != selmon) {
1350 sendmon(c, m);
1351 selmon = m;
1352 focus(NULL);
1353 }
1354 }
1355
1356 void
1357 restack(Monitor *m)
1358 {
1359 Client *c;
1360 XEvent ev;
1361 XWindowChanges wc;
1362
1363 drawbar(m);
1364 if (!m->sel)
1365 return;
1366 if (m->sel->isfloating || !m->lt[m->sellt]->arrange)
1367 XRaiseWindow(dpy, m->sel->win);
1368 if (m->lt[m->sellt]->arrange) {
1369 wc.stack_mode = Below;
1370 wc.sibling = m->barwin;
1371 for (c = m->stack; c; c = c->snext)
1372 if (!c->isfloating && ISVISIBLE(c)) {
1373 XConfigureWindow(dpy, c->win, CWSibling|CWStackMode, &wc);
1374 wc.sibling = c->win;
1375 }
1376 }
1377 XSync(dpy, False);
1378 while (XCheckMaskEvent(dpy, EnterWindowMask, &ev));
1379 }
1380
1381 void
1382 run(void)
1383 {
1384 XEvent ev;
1385 /* main event loop */
1386 XSync(dpy, False);
1387 while (running && !XNextEvent(dpy, &ev))
1388 if (handler[ev.type])
1389 handler[ev.type](&ev); /* call handler */
1390 }
1391
1392 void
1393 scan(void)
1394 {
1395 unsigned int i, num;
1396 Window d1, d2, *wins = NULL;
1397 XWindowAttributes wa;
1398
1399 if (XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
1400 for (i = 0; i < num; i++) {
1401 if (!XGetWindowAttributes(dpy, wins[i], &wa)
1402 || wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
1403 continue;
1404 if (wa.map_state == IsViewable || getstate(wins[i]) == IconicState)
1405 manage(wins[i], &wa);
1406 }
1407 for (i = 0; i < num; i++) { /* now the transients */
1408 if (!XGetWindowAttributes(dpy, wins[i], &wa))
1409 continue;
1410 if (XGetTransientForHint(dpy, wins[i], &d1)
1411 && (wa.map_state == IsViewable || getstate(wins[i]) == IconicState))
1412 manage(wins[i], &wa);
1413 }
1414 if (wins)
1415 XFree(wins);
1416 }
1417 }
1418
1419 void
1420 sendmon(Client *c, Monitor *m)
1421 {
1422 if (c->mon == m)
1423 return;
1424 unfocus(c, 1);
1425 detach(c);
1426 detachstack(c);
1427 c->mon = m;
1428 c->tags = m->tagset[m->seltags]; /* assign tags of target monitor */
1429 attach(c);
1430 attachstack(c);
1431 focus(NULL);
1432 arrange(NULL);
1433 }
1434
1435 void
1436 setclientstate(Client *c, long state)
1437 {
1438 long data[] = { state, None };
1439
1440 XChangeProperty(dpy, c->win, wmatom[WMState], wmatom[WMState], 32,
1441 PropModeReplace, (unsigned char *)data, 2);
1442 }
1443
1444 int
1445 sendevent(Client *c, Atom proto)
1446 {
1447 int n;
1448 Atom *protocols;
1449 int exists = 0;
1450 XEvent ev;
1451
1452 if (XGetWMProtocols(dpy, c->win, &protocols, &n)) {
1453 while (!exists && n--)
1454 exists = protocols[n] == proto;
1455 XFree(protocols);
1456 }
1457 if (exists) {
1458 ev.type = ClientMessage;
1459 ev.xclient.window = c->win;
1460 ev.xclient.message_type = wmatom[WMProtocols];
1461 ev.xclient.format = 32;
1462 ev.xclient.data.l[0] = proto;
1463 ev.xclient.data.l[1] = CurrentTime;
1464 XSendEvent(dpy, c->win, False, NoEventMask, &ev);
1465 }
1466 return exists;
1467 }
1468
1469 void
1470 setfocus(Client *c)
1471 {
1472 if (!c->neverfocus) {
1473 XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
1474 XChangeProperty(dpy, root, netatom[NetActiveWindow],
1475 XA_WINDOW, 32, PropModeReplace,
1476 (unsigned char *) &(c->win), 1);
1477 }
1478 sendevent(c, wmatom[WMTakeFocus]);
1479 }
1480
1481 void
1482 setfullscreen(Client *c, int fullscreen)
1483 {
1484 if (fullscreen && !c->isfullscreen) {
1485 XChangeProperty(dpy, c->win, netatom[NetWMState], XA_ATOM, 32,
1486 PropModeReplace, (unsigned char*)&netatom[NetWMFullscreen], 1);
1487 c->isfullscreen = 1;
1488 c->oldstate = c->isfloating;
1489 c->oldbw = c->bw;
1490 c->bw = 0;
1491 c->isfloating = 1;
1492 resizeclient(c, c->mon->mx, c->mon->my, c->mon->mw, c->mon->mh);
1493 XRaiseWindow(dpy, c->win);
1494 } else if (!fullscreen && c->isfullscreen){
1495 XChangeProperty(dpy, c->win, netatom[NetWMState], XA_ATOM, 32,
1496 PropModeReplace, (unsigned char*)0, 0);
1497 c->isfullscreen = 0;
1498 c->isfloating = c->oldstate;
1499 c->bw = c->oldbw;
1500 c->x = c->oldx;
1501 c->y = c->oldy;
1502 c->w = c->oldw;
1503 c->h = c->oldh;
1504 resizeclient(c, c->x, c->y, c->w, c->h);
1505 arrange(c->mon);
1506 }
1507 }
1508
1509 void
1510 setlayout(const Arg *arg)
1511 {
1512 if (!arg || !arg->v || arg->v != selmon->lt[selmon->sellt])
1513 selmon->sellt ^= 1;
1514 if (arg && arg->v)
1515 selmon->lt[selmon->sellt] = (Layout *)arg->v;
1516 strncpy(selmon->ltsymbol, selmon->lt[selmon->sellt]->symbol, sizeof selmon->ltsymbol);
1517 if (selmon->sel)
1518 arrange(selmon);
1519 else
1520 drawbar(selmon);
1521 }
1522
1523 /* arg > 1.0 will set mfact absolutely */
1524 void
1525 setmfact(const Arg *arg)
1526 {
1527 float f;
1528
1529 if (!arg || !selmon->lt[selmon->sellt]->arrange)
1530 return;
1531 f = arg->f < 1.0 ? arg->f + selmon->mfact : arg->f - 1.0;
1532 if (f < 0.05 || f > 0.95)
1533 return;
1534 selmon->mfact = f;
1535 arrange(selmon);
1536 }
1537
1538 void
1539 setup(void)
1540 {
1541 int i;
1542 XSetWindowAttributes wa;
1543 Atom utf8string;
1544 struct sigaction sa;
1545
1546 /* do not transform children into zombies when they terminate */
1547 sigemptyset(&sa.sa_mask);
1548 sa.sa_flags = SA_NOCLDSTOP | SA_NOCLDWAIT | SA_RESTART;
1549 sa.sa_handler = SIG_IGN;
1550 sigaction(SIGCHLD, &sa, NULL);
1551
1552 /* clean up any zombies (inherited from .xinitrc etc) immediately */
1553 while (waitpid(-1, NULL, WNOHANG) > 0);
1554
1555 /* init screen */
1556 screen = DefaultScreen(dpy);
1557 sw = DisplayWidth(dpy, screen);
1558 sh = DisplayHeight(dpy, screen);
1559 root = RootWindow(dpy, screen);
1560 drw = drw_create(dpy, screen, root, sw, sh);
1561 if (!drw_fontset_create(drw, fonts, LENGTH(fonts)))
1562 die("no fonts could be loaded.");
1563 lrpad = drw->fonts->h;
1564 bh = drw->fonts->h + 2;
1565 updategeom();
1566 /* init atoms */
1567 utf8string = XInternAtom(dpy, "UTF8_STRING", False);
1568 wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
1569 wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
1570 wmatom[WMState] = XInternAtom(dpy, "WM_STATE", False);
1571 wmatom[WMTakeFocus] = XInternAtom(dpy, "WM_TAKE_FOCUS", False);
1572 netatom[NetActiveWindow] = XInternAtom(dpy, "_NET_ACTIVE_WINDOW", False);
1573 netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
1574 netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
1575 netatom[NetWMState] = XInternAtom(dpy, "_NET_WM_STATE", False);
1576 netatom[NetWMCheck] = XInternAtom(dpy, "_NET_SUPPORTING_WM_CHECK", False);
1577 netatom[NetWMFullscreen] = XInternAtom(dpy, "_NET_WM_STATE_FULLSCREEN", False);
1578 netatom[NetWMWindowType] = XInternAtom(dpy, "_NET_WM_WINDOW_TYPE", False);
1579 netatom[NetWMWindowTypeDialog] = XInternAtom(dpy, "_NET_WM_WINDOW_TYPE_DIALOG", False);
1580 netatom[NetClientList] = XInternAtom(dpy, "_NET_CLIENT_LIST", False);
1581 /* init cursors */
1582 cursor[CurNormal] = drw_cur_create(drw, XC_left_ptr);
1583 cursor[CurResize] = drw_cur_create(drw, XC_sizing);
1584 cursor[CurMove] = drw_cur_create(drw, XC_fleur);
1585 /* init appearance */
1586 scheme = ecalloc(LENGTH(colors), sizeof(Clr *));
1587 for (i = 0; i < LENGTH(colors); i++)
1588 scheme[i] = drw_scm_create(drw, colors[i], 3);
1589 /* init bars */
1590 updatebars();
1591 updatestatus();
1592 /* supporting window for NetWMCheck */
1593 wmcheckwin = XCreateSimpleWindow(dpy, root, 0, 0, 1, 1, 0, 0, 0);
1594 XChangeProperty(dpy, wmcheckwin, netatom[NetWMCheck], XA_WINDOW, 32,
1595 PropModeReplace, (unsigned char *) &wmcheckwin, 1);
1596 XChangeProperty(dpy, wmcheckwin, netatom[NetWMName], utf8string, 8,
1597 PropModeReplace, (unsigned char *) "dwm", 3);
1598 XChangeProperty(dpy, root, netatom[NetWMCheck], XA_WINDOW, 32,
1599 PropModeReplace, (unsigned char *) &wmcheckwin, 1);
1600 /* EWMH support per view */
1601 XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
1602 PropModeReplace, (unsigned char *) netatom, NetLast);
1603 XDeleteProperty(dpy, root, netatom[NetClientList]);
1604 /* select events */
1605 wa.cursor = cursor[CurNormal]->cursor;
1606 wa.event_mask = SubstructureRedirectMask|SubstructureNotifyMask
1607 |ButtonPressMask|PointerMotionMask|EnterWindowMask
1608 |LeaveWindowMask|StructureNotifyMask|PropertyChangeMask;
1609 XChangeWindowAttributes(dpy, root, CWEventMask|CWCursor, &wa);
1610 XSelectInput(dpy, root, wa.event_mask);
1611 grabkeys();
1612 focus(NULL);
1613 }
1614
1615 void
1616 seturgent(Client *c, int urg)
1617 {
1618 XWMHints *wmh;
1619
1620 c->isurgent = urg;
1621 if (!(wmh = XGetWMHints(dpy, c->win)))
1622 return;
1623 wmh->flags = urg ? (wmh->flags | XUrgencyHint) : (wmh->flags & ~XUrgencyHint);
1624 XSetWMHints(dpy, c->win, wmh);
1625 XFree(wmh);
1626 }
1627
1628 void
1629 showhide(Client *c)
1630 {
1631 if (!c)
1632 return;
1633 if (ISVISIBLE(c)) {
1634 /* show clients top down */
1635 XMoveWindow(dpy, c->win, c->x, c->y);
1636 if ((!c->mon->lt[c->mon->sellt]->arrange || c->isfloating) && !c->isfullscreen)
1637 resize(c, c->x, c->y, c->w, c->h, 0);
1638 showhide(c->snext);
1639 } else {
1640 /* hide clients bottom up */
1641 showhide(c->snext);
1642 XMoveWindow(dpy, c->win, WIDTH(c) * -2, c->y);
1643 }
1644 }
1645
1646 void
1647 spawn(const Arg *arg)
1648 {
1649 struct sigaction sa;
1650
1651 if (arg->v == dmenucmd)
1652 dmenumon[0] = '0' + selmon->num;
1653 if (fork() == 0) {
1654 if (dpy)
1655 close(ConnectionNumber(dpy));
1656 setsid();
1657
1658 sigemptyset(&sa.sa_mask);
1659 sa.sa_flags = 0;
1660 sa.sa_handler = SIG_DFL;
1661 sigaction(SIGCHLD, &sa, NULL);
1662
1663 execvp(((char **)arg->v)[0], (char **)arg->v);
1664 die("dwm: execvp '%s' failed:", ((char **)arg->v)[0]);
1665 }
1666 }
1667
1668 void
1669 tag(const Arg *arg)
1670 {
1671 if (selmon->sel && arg->ui & TAGMASK) {
1672 selmon->sel->tags = arg->ui & TAGMASK;
1673 focus(NULL);
1674 arrange(selmon);
1675 }
1676 }
1677
1678 void
1679 tagmon(const Arg *arg)
1680 {
1681 if (!selmon->sel || !mons->next)
1682 return;
1683 sendmon(selmon->sel, dirtomon(arg->i));
1684 }
1685
1686 void
1687 tile(Monitor *m)
1688 {
1689 unsigned int i, n, h, mw, my, ty;
1690 Client *c;
1691
1692 for (n = 0, c = nexttiled(m->clients); c; c = nexttiled(c->next), n++);
1693 if (n == 0)
1694 return;
1695
1696 if (n > m->nmaster)
1697 mw = m->nmaster ? m->ww * m->mfact : 0;
1698 else
1699 mw = m->ww;
1700 for (i = my = ty = 0, c = nexttiled(m->clients); c; c = nexttiled(c->next), i++)
1701 if (i < m->nmaster) {
1702 h = (m->wh - my) / (MIN(n, m->nmaster) - i);
1703 resize(c, m->wx, m->wy + my, mw - (2*c->bw), h - (2*c->bw), 0);
1704 if (my + HEIGHT(c) < m->wh)
1705 my += HEIGHT(c);
1706 } else {
1707 h = (m->wh - ty) / (n - i);
1708 resize(c, m->wx + mw, m->wy + ty, m->ww - mw - (2*c->bw), h - (2*c->bw), 0);
1709 if (ty + HEIGHT(c) < m->wh)
1710 ty += HEIGHT(c);
1711 }
1712 }
1713
1714 void
1715 togglebar(const Arg *arg)
1716 {
1717 selmon->showbar = !selmon->showbar;
1718 updatebarpos(selmon);
1719 XMoveResizeWindow(dpy, selmon->barwin, selmon->wx, selmon->by, selmon->ww, bh);
1720 arrange(selmon);
1721 }
1722
1723 void
1724 togglefloating(const Arg *arg)
1725 {
1726 if (!selmon->sel)
1727 return;
1728 if (selmon->sel->isfullscreen) /* no support for fullscreen windows */
1729 return;
1730 selmon->sel->isfloating = !selmon->sel->isfloating || selmon->sel->isfixed;
1731 if (selmon->sel->isfloating)
1732 resize(selmon->sel, selmon->sel->x, selmon->sel->y,
1733 selmon->sel->w, selmon->sel->h, 0);
1734 arrange(selmon);
1735 }
1736
1737 void
1738 toggletag(const Arg *arg)
1739 {
1740 unsigned int newtags;
1741
1742 if (!selmon->sel)
1743 return;
1744 newtags = selmon->sel->tags ^ (arg->ui & TAGMASK);
1745 if (newtags) {
1746 selmon->sel->tags = newtags;
1747 focus(NULL);
1748 arrange(selmon);
1749 }
1750 }
1751
1752 void
1753 toggleview(const Arg *arg)
1754 {
1755 unsigned int newtagset = selmon->tagset[selmon->seltags] ^ (arg->ui & TAGMASK);
1756
1757 if (newtagset) {
1758 selmon->tagset[selmon->seltags] = newtagset;
1759 focus(NULL);
1760 arrange(selmon);
1761 }
1762 }
1763
1764 void
1765 unfocus(Client *c, int setfocus)
1766 {
1767 if (!c)
1768 return;
1769 grabbuttons(c, 0);
1770 XSetWindowBorder(dpy, c->win, scheme[SchemeNorm][ColBorder].pixel);
1771 if (setfocus) {
1772 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
1773 XDeleteProperty(dpy, root, netatom[NetActiveWindow]);
1774 }
1775 }
1776
1777 void
1778 unmanage(Client *c, int destroyed)
1779 {
1780 Monitor *m = c->mon;
1781 XWindowChanges wc;
1782
1783 detach(c);
1784 detachstack(c);
1785 if (!destroyed) {
1786 wc.border_width = c->oldbw;
1787 XGrabServer(dpy); /* avoid race conditions */
1788 XSetErrorHandler(xerrordummy);
1789 XSelectInput(dpy, c->win, NoEventMask);
1790 XConfigureWindow(dpy, c->win, CWBorderWidth, &wc); /* restore border */
1791 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
1792 setclientstate(c, WithdrawnState);
1793 XSync(dpy, False);
1794 XSetErrorHandler(xerror);
1795 XUngrabServer(dpy);
1796 }
1797 free(c);
1798 focus(NULL);
1799 updateclientlist();
1800 arrange(m);
1801 }
1802
1803 void
1804 unmapnotify(XEvent *e)
1805 {
1806 Client *c;
1807 XUnmapEvent *ev = &e->xunmap;
1808
1809 if ((c = wintoclient(ev->window))) {
1810 if (ev->send_event)
1811 setclientstate(c, WithdrawnState);
1812 else
1813 unmanage(c, 0);
1814 }
1815 }
1816
1817 void
1818 updatebars(void)
1819 {
1820 Monitor *m;
1821 XSetWindowAttributes wa = {
1822 .override_redirect = True,
1823 .background_pixmap = ParentRelative,
1824 .event_mask = ButtonPressMask|ExposureMask
1825 };
1826 XClassHint ch = {"dwm", "dwm"};
1827 for (m = mons; m; m = m->next) {
1828 if (m->barwin)
1829 continue;
1830 m->barwin = XCreateWindow(dpy, root, m->wx, m->by, m->ww, bh, 0, DefaultDepth(dpy, screen),
1831 CopyFromParent, DefaultVisual(dpy, screen),
1832 CWOverrideRedirect|CWBackPixmap|CWEventMask, &wa);
1833 XDefineCursor(dpy, m->barwin, cursor[CurNormal]->cursor);
1834 XMapRaised(dpy, m->barwin);
1835 XSetClassHint(dpy, m->barwin, &ch);
1836 }
1837 }
1838
1839 void
1840 updatebarpos(Monitor *m)
1841 {
1842 m->wy = m->my;
1843 m->wh = m->mh;
1844 if (m->showbar) {
1845 m->wh -= bh;
1846 m->by = m->topbar ? m->wy : m->wy + m->wh;
1847 m->wy = m->topbar ? m->wy + bh : m->wy;
1848 } else
1849 m->by = -bh;
1850 }
1851
1852 void
1853 updateclientlist(void)
1854 {
1855 Client *c;
1856 Monitor *m;
1857
1858 XDeleteProperty(dpy, root, netatom[NetClientList]);
1859 for (m = mons; m; m = m->next)
1860 for (c = m->clients; c; c = c->next)
1861 XChangeProperty(dpy, root, netatom[NetClientList],
1862 XA_WINDOW, 32, PropModeAppend,
1863 (unsigned char *) &(c->win), 1);
1864 }
1865
1866 int
1867 updategeom(void)
1868 {
1869 int dirty = 0;
1870
1871 #ifdef XINERAMA
1872 if (XineramaIsActive(dpy)) {
1873 int i, j, n, nn;
1874 Client *c;
1875 Monitor *m;
1876 XineramaScreenInfo *info = XineramaQueryScreens(dpy, &nn);
1877 XineramaScreenInfo *unique = NULL;
1878
1879 for (n = 0, m = mons; m; m = m->next, n++);
1880 /* only consider unique geometries as separate screens */
1881 unique = ecalloc(nn, sizeof(XineramaScreenInfo));
1882 for (i = 0, j = 0; i < nn; i++)
1883 if (isuniquegeom(unique, j, &info[i]))
1884 memcpy(&unique[j++], &info[i], sizeof(XineramaScreenInfo));
1885 XFree(info);
1886 nn = j;
1887
1888 /* new monitors if nn > n */
1889 for (i = n; i < nn; i++) {
1890 for (m = mons; m && m->next; m = m->next);
1891 if (m)
1892 m->next = createmon();
1893 else
1894 mons = createmon();
1895 }
1896 for (i = 0, m = mons; i < nn && m; m = m->next, i++)
1897 if (i >= n
1898 || unique[i].x_org != m->mx || unique[i].y_org != m->my
1899 || unique[i].width != m->mw || unique[i].height != m->mh)
1900 {
1901 dirty = 1;
1902 m->num = i;
1903 m->mx = m->wx = unique[i].x_org;
1904 m->my = m->wy = unique[i].y_org;
1905 m->mw = m->ww = unique[i].width;
1906 m->mh = m->wh = unique[i].height;
1907 updatebarpos(m);
1908 }
1909 /* removed monitors if n > nn */
1910 for (i = nn; i < n; i++) {
1911 for (m = mons; m && m->next; m = m->next);
1912 while ((c = m->clients)) {
1913 dirty = 1;
1914 m->clients = c->next;
1915 detachstack(c);
1916 c->mon = mons;
1917 attach(c);
1918 attachstack(c);
1919 }
1920 if (m == selmon)
1921 selmon = mons;
1922 cleanupmon(m);
1923 }
1924 free(unique);
1925 } else
1926 #endif /* XINERAMA */
1927 { /* default monitor setup */
1928 if (!mons)
1929 mons = createmon();
1930 if (mons->mw != sw || mons->mh != sh) {
1931 dirty = 1;
1932 mons->mw = mons->ww = sw;
1933 mons->mh = mons->wh = sh;
1934 updatebarpos(mons);
1935 }
1936 }
1937 if (dirty) {
1938 selmon = mons;
1939 selmon = wintomon(root);
1940 }
1941 return dirty;
1942 }
1943
1944 void
1945 updatenumlockmask(void)
1946 {
1947 unsigned int i, j;
1948 XModifierKeymap *modmap;
1949
1950 numlockmask = 0;
1951 modmap = XGetModifierMapping(dpy);
1952 for (i = 0; i < 8; i++)
1953 for (j = 0; j < modmap->max_keypermod; j++)
1954 if (modmap->modifiermap[i * modmap->max_keypermod + j]
1955 == XKeysymToKeycode(dpy, XK_Num_Lock))
1956 numlockmask = (1 << i);
1957 XFreeModifiermap(modmap);
1958 }
1959
1960 void
1961 updatesizehints(Client *c)
1962 {
1963 long msize;
1964 XSizeHints size;
1965
1966 if (!XGetWMNormalHints(dpy, c->win, &size, &msize))
1967 /* size is uninitialized, ensure that size.flags aren't used */
1968 size.flags = PSize;
1969 if (size.flags & PBaseSize) {
1970 c->basew = size.base_width;
1971 c->baseh = size.base_height;
1972 } else if (size.flags & PMinSize) {
1973 c->basew = size.min_width;
1974 c->baseh = size.min_height;
1975 } else
1976 c->basew = c->baseh = 0;
1977 if (size.flags & PResizeInc) {
1978 c->incw = size.width_inc;
1979 c->inch = size.height_inc;
1980 } else
1981 c->incw = c->inch = 0;
1982 if (size.flags & PMaxSize) {
1983 c->maxw = size.max_width;
1984 c->maxh = size.max_height;
1985 } else
1986 c->maxw = c->maxh = 0;
1987 if (size.flags & PMinSize) {
1988 c->minw = size.min_width;
1989 c->minh = size.min_height;
1990 } else if (size.flags & PBaseSize) {
1991 c->minw = size.base_width;
1992 c->minh = size.base_height;
1993 } else
1994 c->minw = c->minh = 0;
1995 if (size.flags & PAspect) {
1996 c->mina = (float)size.min_aspect.y / size.min_aspect.x;
1997 c->maxa = (float)size.max_aspect.x / size.max_aspect.y;
1998 } else
1999 c->maxa = c->mina = 0.0;
2000 c->isfixed = (c->maxw && c->maxh && c->maxw == c->minw && c->maxh == c->minh);
2001 c->hintsvalid = 1;
2002 }
2003
2004 void
2005 updatestatus(void)
2006 {
2007 if (!gettextprop(root, XA_WM_NAME, stext, sizeof(stext)))
2008 strcpy(stext, "dwm-"VERSION);
2009 drawbar(selmon);
2010 }
2011
2012 void
2013 updatetitle(Client *c)
2014 {
2015 if (!gettextprop(c->win, netatom[NetWMName], c->name, sizeof c->name))
2016 gettextprop(c->win, XA_WM_NAME, c->name, sizeof c->name);
2017 if (c->name[0] == '\0') /* hack to mark broken clients */
2018 strcpy(c->name, broken);
2019 }
2020
2021 void
2022 updatewindowtype(Client *c)
2023 {
2024 Atom state = getatomprop(c, netatom[NetWMState]);
2025 Atom wtype = getatomprop(c, netatom[NetWMWindowType]);
2026
2027 if (state == netatom[NetWMFullscreen])
2028 setfullscreen(c, 1);
2029 if (wtype == netatom[NetWMWindowTypeDialog])
2030 c->isfloating = 1;
2031 }
2032
2033 void
2034 updatewmhints(Client *c)
2035 {
2036 XWMHints *wmh;
2037
2038 if ((wmh = XGetWMHints(dpy, c->win))) {
2039 if (c == selmon->sel && wmh->flags & XUrgencyHint) {
2040 wmh->flags &= ~XUrgencyHint;
2041 XSetWMHints(dpy, c->win, wmh);
2042 } else
2043 c->isurgent = (wmh->flags & XUrgencyHint) ? 1 : 0;
2044 if (wmh->flags & InputHint)
2045 c->neverfocus = !wmh->input;
2046 else
2047 c->neverfocus = 0;
2048 XFree(wmh);
2049 }
2050 }
2051
2052 void
2053 view(const Arg *arg)
2054 {
2055 if ((arg->ui & TAGMASK) == selmon->tagset[selmon->seltags])
2056 return;
2057 selmon->seltags ^= 1; /* toggle sel tagset */
2058 if (arg->ui & TAGMASK)
2059 selmon->tagset[selmon->seltags] = arg->ui & TAGMASK;
2060 focus(NULL);
2061 arrange(selmon);
2062 }
2063
2064 Client *
2065 wintoclient(Window w)
2066 {
2067 Client *c;
2068 Monitor *m;
2069
2070 for (m = mons; m; m = m->next)
2071 for (c = m->clients; c; c = c->next)
2072 if (c->win == w)
2073 return c;
2074 return NULL;
2075 }
2076
2077 Monitor *
2078 wintomon(Window w)
2079 {
2080 int x, y;
2081 Client *c;
2082 Monitor *m;
2083
2084 if (w == root && getrootptr(&x, &y))
2085 return recttomon(x, y, 1, 1);
2086 for (m = mons; m; m = m->next)
2087 if (w == m->barwin)
2088 return m;
2089 if ((c = wintoclient(w)))
2090 return c->mon;
2091 return selmon;
2092 }
2093
2094 /* There's no way to check accesses to destroyed windows, thus those cases are
2095 * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
2096 * default error handler, which may call exit. */
2097 int
2098 xerror(Display *dpy, XErrorEvent *ee)
2099 {
2100 if (ee->error_code == BadWindow
2101 || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
2102 || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
2103 || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
2104 || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
2105 || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
2106 || (ee->request_code == X_GrabButton && ee->error_code == BadAccess)
2107 || (ee->request_code == X_GrabKey && ee->error_code == BadAccess)
2108 || (ee->request_code == X_CopyArea && ee->error_code == BadDrawable))
2109 return 0;
2110 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
2111 ee->request_code, ee->error_code);
2112 return xerrorxlib(dpy, ee); /* may call exit */
2113 }
2114
2115 int
2116 xerrordummy(Display *dpy, XErrorEvent *ee)
2117 {
2118 return 0;
2119 }
2120
2121 /* Startup Error handler to check if another window manager
2122 * is already running. */
2123 int
2124 xerrorstart(Display *dpy, XErrorEvent *ee)
2125 {
2126 die("dwm: another window manager is already running");
2127 return -1;
2128 }
2129
2130 void
2131 zoom(const Arg *arg)
2132 {
2133 Client *c = selmon->sel;
2134
2135 if (!selmon->lt[selmon->sellt]->arrange || !c || c->isfloating)
2136 return;
2137 if (c == nexttiled(selmon->clients) && !(c = nexttiled(c->next)))
2138 return;
2139 pop(c);
2140 }
2141
2142 int
2143 main(int argc, char *argv[])
2144 {
2145 if (argc == 2 && !strcmp("-v", argv[1]))
2146 die("dwm-"VERSION);
2147 else if (argc != 1)
2148 die("usage: dwm [-v]");
2149 if (!setlocale(LC_CTYPE, "") || !XSupportsLocale())
2150 fputs("warning: no locale support\n", stderr);
2151 if (!(dpy = XOpenDisplay(NULL)))
2152 die("dwm: cannot open display");
2153 checkotherwm();
2154 setup();
2155 #ifdef __OpenBSD__
2156 if (pledge("stdio rpath proc exec", NULL) == -1)
2157 die("pledge");
2158 #endif /* __OpenBSD__ */
2159 scan();
2160 run();
2161 cleanup();
2162 XCloseDisplay(dpy);
2163 return EXIT_SUCCESS;
2164 }