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local/src/dwm/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 */
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41
42
43
44
45
46
47 /* macros */
48
49
50
51 * MAX(0, MIN((y)+(h),(m)->wy+(m)->wh) - MAX((y),(m)->wy)))
52
53
54
55
56
57
58
59
60 /* enums */
61 enum { CurNormal, CurResize, CurMove, CurLast }; /* cursor */
62 enum { SchemeNorm, SchemeSel }; /* color schemes */
63 enum { NetSupported, NetWMName, NetWMState, NetWMCheck,
64 NetWMFullscreen, NetActiveWindow, NetWMWindowType,
65 NetWMWindowTypeDialog, NetClientList, NetLast }; /* EWMH atoms */
66 enum { WMProtocols, WMDelete, WMState, WMTakeFocus, WMLast }; /* default atoms */
67 enum { ClkTagBar, ClkLtSymbol, ClkStatusText, ClkWinTitle,
68 ClkClientWin, ClkRootWin, ClkLast }; /* clicks */
69
70 typedef union {
71 int i;
72 unsigned int ui;
73 float f;
74 const void *v;
75 } Arg;
76
77 typedef struct {
78 unsigned int click;
79 unsigned int mask;
80 unsigned int button;
81 void (*func)(const Arg *arg);
82 const Arg arg;
83 } Button;
84
85 typedef struct Monitor Monitor;
86 typedef struct Client Client;
87 struct Client {
88 char name[256];
89 float mina, maxa;
90
91 float cfact;
92
93 int x, y, w, h;
94 int oldx, oldy, oldw, oldh;
95 int basew, baseh, incw, inch, maxw, maxh, minw, minh;
96 int bw, oldbw;
97 unsigned int tags;
98 int isfixed, isfloating, isurgent, neverfocus, oldstate, isfullscreen;
99 Client *next;
100 Client *snext;
101 Monitor *mon;
102 Window win;
103 };
104
105 typedef struct {
106 unsigned int mod;
107 KeySym keysym;
108 void (*func)(const Arg *);
109 const Arg arg;
110 } Key;
111
112 typedef struct {
113 const char *symbol;
114 void (*arrange)(Monitor *);
115 } Layout;
116
117
118 typedef struct Pertag Pertag;
119
120
121 struct Monitor {
122 char ltsymbol[16];
123 float mfact;
124 int nmaster;
125 int num;
126 int by; /* bar geometry */
127
128 int btw; /* width of tasks portion of bar */
129 int bt; /* number of tasks */
130
131 int mx, my, mw, mh; /* screen size */
132 int wx, wy, ww, wh; /* window area */
133 unsigned int seltags;
134 unsigned int sellt;
135 unsigned int tagset[2];
136 int showbar;
137 int topbar;
138 Client *clients;
139 Client *sel;
140 Client *stack;
141 Monitor *next;
142 Window barwin;
143 const Layout *lt[2];
144
145 Pertag *pertag;
146
147 };
148
149 typedef struct {
150 const char *class;
151 const char *instance;
152 const char *title;
153 unsigned int tags;
154 int isfloating;
155 int monitor;
156 } Rule;
157
158 /* function declarations */
159 static void applyrules(Client *c);
160 static int applysizehints(Client *c, int *x, int *y, int *w, int *h, int interact);
161 static void arrange(Monitor *m);
162 static void arrangemon(Monitor *m);
163 static void attach(Client *c);
164 static void attachstack(Client *c);
165 static void buttonpress(XEvent *e);
166 static void checkotherwm(void);
167 static void cleanup(void);
168 static void cleanupmon(Monitor *mon);
169 static void clientmessage(XEvent *e);
170 static void configure(Client *c);
171 static void configurenotify(XEvent *e);
172 static void configurerequest(XEvent *e);
173 static Monitor *createmon(void);
174 static void destroynotify(XEvent *e);
175 static void detach(Client *c);
176 static void detachstack(Client *c);
177 static Monitor *dirtomon(int dir);
178 static void drawbar(Monitor *m);
179 static void drawbars(void);
180 static void enternotify(XEvent *e);
181 static void expose(XEvent *e);
182 static void focus(Client *c);
183 static void focusin(XEvent *e);
184 static void focusmon(const Arg *arg);
185 static void focusstack(const Arg *arg);
186 static Atom getatomprop(Client *c, Atom prop);
187 static int getrootptr(int *x, int *y);
188 static long getstate(Window w);
189 static int gettextprop(Window w, Atom atom, char *text, unsigned int size);
190 static void grabbuttons(Client *c, int focused);
191 static void grabkeys(void);
192 static void incnmaster(const Arg *arg);
193 static void keypress(XEvent *e);
194 static void killclient(const Arg *arg);
195 static void manage(Window w, XWindowAttributes *wa);
196 static void mappingnotify(XEvent *e);
197 static void maprequest(XEvent *e);
198 static void monocle(Monitor *m);
199 static void motionnotify(XEvent *e);
200 static void movemouse(const Arg *arg);
201 static Client *nexttiled(Client *c);
202 static void pop(Client *);
203 static void propertynotify(XEvent *e);
204 static void quit(const Arg *arg);
205 static Monitor *recttomon(int x, int y, int w, int h);
206 static void resize(Client *c, int x, int y, int w, int h, int interact);
207 static void resizeclient(Client *c, int x, int y, int w, int h);
208 static void resizemouse(const Arg *arg);
209 static void restack(Monitor *m);
210 static void run(void);
211 static void scan(void);
212 static int sendevent(Client *c, Atom proto);
213 static void sendmon(Client *c, Monitor *m);
214 static void setclientstate(Client *c, long state);
215 static void setfocus(Client *c);
216 static void setfullscreen(Client *c, int fullscreen);
217 static void setlayout(const Arg *arg);
218 static void setmfact(const Arg *arg);
219 static void setup(void);
220 static void seturgent(Client *c, int urg);
221 static void showhide(Client *c);
222 static void sigchld(int unused);
223 static void spawn(const Arg *arg);
224 static void tag(const Arg *arg);
225 static void tagmon(const Arg *arg);
226 static void tile(Monitor *);
227 static void togglebar(const Arg *arg);
228 static void togglefloating(const Arg *arg);
229 static void toggletag(const Arg *arg);
230 static void toggleview(const Arg *arg);
231 static void unfocus(Client *c, int setfocus);
232 static void unmanage(Client *c, int destroyed);
233 static void unmapnotify(XEvent *e);
234 static void updatebarpos(Monitor *m);
235 static void updatebars(void);
236 static void updateclientlist(void);
237 static int updategeom(void);
238 static void updatenumlockmask(void);
239 static void updatesizehints(Client *c);
240 static void updatestatus(void);
241 static void updatetitle(Client *c);
242 static void updatewindowtype(Client *c);
243 static void updatewmhints(Client *c);
244 static void view(const Arg *arg);
245 static Client *wintoclient(Window w);
246 static Monitor *wintomon(Window w);
247 static int xerror(Display *dpy, XErrorEvent *ee);
248 static int xerrordummy(Display *dpy, XErrorEvent *ee);
249 static int xerrorstart(Display *dpy, XErrorEvent *ee);
250 static void zoom(const Arg *arg);
251
252
253 static void togglewin(const Arg *arg);
254 static void killwin(const Arg *arg);
255 static void zoomwin(const Arg *arg);
256
257
258
259 static void setcfact(const Arg *arg);
260
261
262 /* variables */
263 static const char broken[] = "broken";
264 static char stext[256];
265 static int screen;
266 static int sw, sh; /* X display screen geometry width, height */
267 static int bh, blw = 0; /* bar geometry */
268 static int lrpad; /* sum of left and right padding for text */
269 static int (*xerrorxlib)(Display *, XErrorEvent *);
270 static unsigned int numlockmask = 0;
271 static void (*handler[LASTEvent]) (XEvent *) = {
272 [ButtonPress] = buttonpress,
273 [ClientMessage] = clientmessage,
274 [ConfigureRequest] = configurerequest,
275 [ConfigureNotify] = configurenotify,
276 [DestroyNotify] = destroynotify,
277 [EnterNotify] = enternotify,
278 [Expose] = expose,
279 [FocusIn] = focusin,
280 [KeyPress] = keypress,
281 [MappingNotify] = mappingnotify,
282 [MapRequest] = maprequest,
283 [MotionNotify] = motionnotify,
284 [PropertyNotify] = propertynotify,
285 [UnmapNotify] = unmapnotify
286 };
287 static Atom wmatom[WMLast], netatom[NetLast];
288 static int running = 1;
289 static Cur *cursor[CurLast];
290 static Clr **scheme;
291 static Display *dpy;
292 static Drw *drw;
293 static Monitor *mons, *selmon;
294 static Window root, wmcheckwin;
295
296 /* configuration, allows nested code to access above variables */
297
298
299
300 struct Pertag {
301 unsigned int curtag, prevtag; /* current and previous tag */
302 int nmasters[LENGTH(tags) + 1]; /* number of windows in master area */
303 float mfacts[LENGTH(tags) + 1]; /* mfacts per tag */
304 unsigned int sellts[LENGTH(tags) + 1]; /* selected layouts */
305 const Layout *ltidxs[LENGTH(tags) + 1][2]; /* matrix of tags and layouts indexes */
306 int showbars[LENGTH(tags) + 1]; /* display bar for the current tag */
307 };
308
309
310 /* compile-time check if all tags fit into an unsigned int bit array. */
311 struct NumTags { char limitexceeded[LENGTH(tags) > 31 ? -1 : 1]; };
312
313 /* function implementations */
314 void
315 applyrules(Client *c)
316 {
317 const char *class, *instance;
318 unsigned int i;
319 const Rule *r;
320 Monitor *m;
321 XClassHint ch = { NULL, NULL };
322
323 /* rule matching */
324 c->isfloating = 0;
325 c->tags = 0;
326 XGetClassHint(dpy, c->win, &ch);
327 class = ch.res_class ? ch.res_class : broken;
328 instance = ch.res_name ? ch.res_name : broken;
329
330 for (i = 0; i < LENGTH(rules); i++) {
331 r = &rules[i];
332 if ((!r->title || strstr(c->name, r->title))
333 && (!r->class || strstr(class, r->class))
334 && (!r->instance || strstr(instance, r->instance)))
335 {
336 c->isfloating = r->isfloating;
337 c->tags |= r->tags;
338 for (m = mons; m && m->num != r->monitor; m = m->next);
339 if (m)
340 c->mon = m;
341 }
342 }
343 if (ch.res_class)
344 XFree(ch.res_class);
345 if (ch.res_name)
346 XFree(ch.res_name);
347 c->tags = c->tags & TAGMASK ? c->tags & TAGMASK : c->mon->tagset[c->mon->seltags];
348 }
349
350 int
351 applysizehints(Client *c, int *x, int *y, int *w, int *h, int interact)
352 {
353 int baseismin;
354 Monitor *m = c->mon;
355
356 /* set minimum possible */
357 *w = MAX(1, *w);
358 *h = MAX(1, *h);
359 if (interact) {
360 if (*x > sw)
361 *x = sw - WIDTH(c);
362 if (*y > sh)
363 *y = sh - HEIGHT(c);
364 if (*x + *w + 2 * c->bw < 0)
365 *x = 0;
366 if (*y + *h + 2 * c->bw < 0)
367 *y = 0;
368 } else {
369 if (*x >= m->wx + m->ww)
370 *x = m->wx + m->ww - WIDTH(c);
371 if (*y >= m->wy + m->wh)
372 *y = m->wy + m->wh - HEIGHT(c);
373 if (*x + *w + 2 * c->bw <= m->wx)
374 *x = m->wx;
375 if (*y + *h + 2 * c->bw <= m->wy)
376 *y = m->wy;
377 }
378 if (*h < bh)
379 *h = bh;
380 if (*w < bh)
381 *w = bh;
382 if (resizehints || c->isfloating || !c->mon->lt[c->mon->sellt]->arrange) {
383 /* see last two sentences in ICCCM 4.1.2.3 */
384 baseismin = c->basew == c->minw && c->baseh == c->minh;
385 if (!baseismin) { /* temporarily remove base dimensions */
386 *w -= c->basew;
387 *h -= c->baseh;
388 }
389 /* adjust for aspect limits */
390 if (c->mina > 0 && c->maxa > 0) {
391 if (c->maxa < (float)*w / *h)
392 *w = *h * c->maxa + 0.5;
393 else if (c->mina < (float)*h / *w)
394 *h = *w * c->mina + 0.5;
395 }
396 if (baseismin) { /* increment calculation requires this */
397 *w -= c->basew;
398 *h -= c->baseh;
399 }
400 /* adjust for increment value */
401 if (c->incw)
402 *w -= *w % c->incw;
403 if (c->inch)
404 *h -= *h % c->inch;
405 /* restore base dimensions */
406 *w = MAX(*w + c->basew, c->minw);
407 *h = MAX(*h + c->baseh, c->minh);
408 if (c->maxw)
409 *w = MIN(*w, c->maxw);
410 if (c->maxh)
411 *h = MIN(*h, c->maxh);
412
413 Atom prop = (c->isfloating || !c->mon->lt[c->mon->sellt]->arrange ? XInternAtom(dpy, "_NET_WM_STATE_ABOVE", False) : None);
414 XChangeProperty(dpy, c->win, netatom[NetWMState], XA_ATOM, 32, PropModeReplace, (unsigned char*)&prop, True);
415
416 }
417 return *x != c->x || *y != c->y || *w != c->w || *h != c->h;
418 }
419
420 void
421 arrange(Monitor *m)
422 {
423 if (m)
424 showhide(m->stack);
425 else for (m = mons; m; m = m->next)
426 showhide(m->stack);
427 if (m) {
428 arrangemon(m);
429 restack(m);
430 } else for (m = mons; m; m = m->next)
431 arrangemon(m);
432 }
433
434 void
435 arrangemon(Monitor *m)
436 {
437 strncpy(m->ltsymbol, m->lt[m->sellt]->symbol, sizeof m->ltsymbol);
438 if (m->lt[m->sellt]->arrange)
439 m->lt[m->sellt]->arrange(m);
440 }
441
442 void
443 attach(Client *c)
444 {
445 c->next = c->mon->clients;
446 c->mon->clients = c;
447 }
448
449 void
450 attachstack(Client *c)
451 {
452 c->snext = c->mon->stack;
453 c->mon->stack = c;
454 }
455
456 void
457 buttonpress(XEvent *e)
458 {
459 unsigned int i, x, click;
460 Arg arg = {0};
461 Client *c;
462 Monitor *m;
463 XButtonPressedEvent *ev = &e->xbutton;
464
465 click = ClkRootWin;
466 /* focus monitor if necessary */
467 if ((m = wintomon(ev->window)) && m != selmon) {
468 unfocus(selmon->sel, 1);
469 selmon = m;
470 focus(NULL);
471 }
472 if (ev->window == selmon->barwin) {
473 i = x = 0;
474 do
475 x += TEXTW(tags[i]);
476 while (ev->x >= x && ++i < LENGTH(tags));
477 if (i < LENGTH(tags)) {
478 click = ClkTagBar;
479 arg.ui = 1 << i;
480 } else if (ev->x < x + blw)
481 click = ClkLtSymbol;
482 else if (ev->x > selmon->ww - (int)TEXTW(stext))
483 click = ClkStatusText;
484
485 else {
486 x += blw;
487 c = m->clients;
488
489 if (c) {
490 do {
491 if (!ISVISIBLE(c))
492 continue;
493 else
494 x += (1.0 / (double)m->bt) * m->btw;
495 } while (ev->x > x && (c = c->next));
496
497 click = ClkWinTitle;
498 arg.v = c;
499 }
500 }
501
502 else
503 click = ClkWinTitle;
504
505 } else if ((c = wintoclient(ev->window))) {
506 focus(c);
507 restack(selmon);
508 XAllowEvents(dpy, ReplayPointer, CurrentTime);
509 click = ClkClientWin;
510 }
511 for (i = 0; i < LENGTH(buttons); i++)
512 if (click == buttons[i].click && buttons[i].func && buttons[i].button == ev->button
513 && CLEANMASK(buttons[i].mask) == CLEANMASK(ev->state))
514
515 buttons[i].func((click == ClkTagBar || click == ClkWinTitle) && buttons[i].arg.i == 0 ? &arg : &buttons[i].arg);
516
517 buttons[i].func(click == ClkTagBar && buttons[i].arg.i == 0 ? &arg : &buttons[i].arg);
518
519 }
520
521 void
522 checkotherwm(void)
523 {
524 xerrorxlib = XSetErrorHandler(xerrorstart);
525 /* this causes an error if some other window manager is running */
526 XSelectInput(dpy, DefaultRootWindow(dpy), SubstructureRedirectMask);
527 XSync(dpy, False);
528 XSetErrorHandler(xerror);
529 XSync(dpy, False);
530 }
531
532 void
533 cleanup(void)
534 {
535 Arg a = {.ui = ~0};
536 Layout foo = { "", NULL };
537 Monitor *m;
538 size_t i;
539
540 view(&a);
541 selmon->lt[selmon->sellt] = &foo;
542 for (m = mons; m; m = m->next)
543 while (m->stack)
544 unmanage(m->stack, 0);
545 XUngrabKey(dpy, AnyKey, AnyModifier, root);
546 while (mons)
547 cleanupmon(mons);
548 for (i = 0; i < CurLast; i++)
549 drw_cur_free(drw, cursor[i]);
550 for (i = 0; i < LENGTH(colors); i++)
551 free(scheme[i]);
552 XDestroyWindow(dpy, wmcheckwin);
553 drw_free(drw);
554 XSync(dpy, False);
555 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
556 XDeleteProperty(dpy, root, netatom[NetActiveWindow]);
557 }
558
559 void
560 cleanupmon(Monitor *mon)
561 {
562 Monitor *m;
563
564 if (mon == mons)
565 mons = mons->next;
566 else {
567 for (m = mons; m && m->next != mon; m = m->next);
568 m->next = mon->next;
569 }
570 XUnmapWindow(dpy, mon->barwin);
571 XDestroyWindow(dpy, mon->barwin);
572 free(mon);
573 }
574
575 void
576 clientmessage(XEvent *e)
577 {
578 XClientMessageEvent *cme = &e->xclient;
579 Client *c = wintoclient(cme->window);
580
581 if (!c)
582 return;
583 if (cme->message_type == netatom[NetWMState]) {
584 if (cme->data.l[1] == netatom[NetWMFullscreen]
585 || cme->data.l[2] == netatom[NetWMFullscreen])
586 setfullscreen(c, (cme->data.l[0] == 1 /* _NET_WM_STATE_ADD */
587 || (cme->data.l[0] == 2 /* _NET_WM_STATE_TOGGLE */ && !c->isfullscreen)));
588 } else if (cme->message_type == netatom[NetActiveWindow]) {
589
590 unsigned int i;
591 for (i = 0; i < LENGTH(tags) && !((1 << i) & c->tags); i++);
592 if (i < LENGTH(tags)) {
593 const Arg a = {.ui = 1 << i};
594 selmon = c->mon;
595 view(&a);
596 focus(c);
597 restack(selmon);
598 }
599
600 if (c != selmon->sel && !c->isurgent)
601 seturgent(c, 1);
602
603 }
604 }
605
606 void
607 configure(Client *c)
608 {
609 XConfigureEvent ce;
610
611 ce.type = ConfigureNotify;
612 ce.display = dpy;
613 ce.event = c->win;
614 ce.window = c->win;
615 ce.x = c->x;
616 ce.y = c->y;
617 ce.width = c->w;
618 ce.height = c->h;
619 ce.border_width = c->bw;
620 ce.above = None;
621 ce.override_redirect = False;
622 XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&ce);
623 }
624
625 void
626 configurenotify(XEvent *e)
627 {
628 Monitor *m;
629 Client *c;
630 XConfigureEvent *ev = &e->xconfigure;
631 int dirty;
632
633 /* TODO: updategeom handling sucks, needs to be simplified */
634 if (ev->window == root) {
635 dirty = (sw != ev->width || sh != ev->height);
636 sw = ev->width;
637 sh = ev->height;
638 if (updategeom() || dirty) {
639 drw_resize(drw, sw, bh);
640 updatebars();
641 for (m = mons; m; m = m->next) {
642 for (c = m->clients; c; c = c->next)
643 if (c->isfullscreen)
644 resizeclient(c, m->mx, m->my, m->mw, m->mh);
645 XMoveResizeWindow(dpy, m->barwin, m->wx, m->by, m->ww, bh);
646 }
647 focus(NULL);
648 arrange(NULL);
649 }
650 }
651 }
652
653 void
654 configurerequest(XEvent *e)
655 {
656 Client *c;
657 Monitor *m;
658 XConfigureRequestEvent *ev = &e->xconfigurerequest;
659 XWindowChanges wc;
660
661 if ((c = wintoclient(ev->window))) {
662 if (ev->value_mask & CWBorderWidth)
663 c->bw = ev->border_width;
664 else if (c->isfloating || !selmon->lt[selmon->sellt]->arrange) {
665 m = c->mon;
666 if (ev->value_mask & CWX) {
667 c->oldx = c->x;
668 c->x = m->mx + ev->x;
669 }
670 if (ev->value_mask & CWY) {
671 c->oldy = c->y;
672 c->y = m->my + ev->y;
673 }
674 if (ev->value_mask & CWWidth) {
675 c->oldw = c->w;
676 c->w = ev->width;
677 }
678 if (ev->value_mask & CWHeight) {
679 c->oldh = c->h;
680 c->h = ev->height;
681 }
682 if ((c->x + c->w) > m->mx + m->mw && c->isfloating)
683 c->x = m->mx + (m->mw / 2 - WIDTH(c) / 2); /* center in x direction */
684 if ((c->y + c->h) > m->my + m->mh && c->isfloating)
685 c->y = m->my + (m->mh / 2 - HEIGHT(c) / 2); /* center in y direction */
686 if ((ev->value_mask & (CWX|CWY)) && !(ev->value_mask & (CWWidth|CWHeight)))
687 configure(c);
688 if (ISVISIBLE(c))
689 XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
690 } else
691 configure(c);
692 } else {
693 wc.x = ev->x;
694 wc.y = ev->y;
695 wc.width = ev->width;
696 wc.height = ev->height;
697 wc.border_width = ev->border_width;
698 wc.sibling = ev->above;
699 wc.stack_mode = ev->detail;
700 XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
701 }
702 XSync(dpy, False);
703 }
704
705 Monitor *
706 createmon(void)
707 {
708 Monitor *m;
709
710 m = ecalloc(1, sizeof(Monitor));
711 m->tagset[0] = m->tagset[1] = 1;
712 m->mfact = mfact;
713 m->nmaster = nmaster;
714 m->showbar = showbar;
715 m->topbar = topbar;
716 m->lt[0] = &layouts[0];
717 m->lt[1] = &layouts[1 % LENGTH(layouts)];
718 strncpy(m->ltsymbol, layouts[0].symbol, sizeof m->ltsymbol);
719
720 m->pertag = ecalloc(1, sizeof(Pertag));
721 m->pertag->curtag = m->pertag->prevtag = 1;
722
723 for (int i = 0; i <= LENGTH(tags); i++) {
724 m->pertag->nmasters[i] = m->nmaster;
725 m->pertag->mfacts[i] = m->mfact;
726
727 m->pertag->ltidxs[i][0] = m->lt[0];
728 m->pertag->ltidxs[i][1] = m->lt[1];
729 m->pertag->sellts[i] = m->sellt;
730
731 m->pertag->showbars[i] = m->showbar;
732 }
733
734 return m;
735 }
736
737 void
738 destroynotify(XEvent *e)
739 {
740 Client *c;
741 XDestroyWindowEvent *ev = &e->xdestroywindow;
742
743 if ((c = wintoclient(ev->window)))
744 unmanage(c, 1);
745 }
746
747 void
748 detach(Client *c)
749 {
750 Client **tc;
751
752 for (tc = &c->mon->clients; *tc && *tc != c; tc = &(*tc)->next);
753 *tc = c->next;
754 }
755
756 void
757 detachstack(Client *c)
758 {
759 Client **tc, *t;
760
761 for (tc = &c->mon->stack; *tc && *tc != c; tc = &(*tc)->snext);
762 *tc = c->snext;
763
764 if (c == c->mon->sel) {
765 for (t = c->mon->stack; t && !ISVISIBLE(t); t = t->snext);
766 c->mon->sel = t;
767 }
768 }
769
770 Monitor *
771 dirtomon(int dir)
772 {
773 Monitor *m = NULL;
774
775 if (dir > 0) {
776 if (!(m = selmon->next))
777 m = mons;
778 } else if (selmon == mons)
779 for (m = mons; m->next; m = m->next);
780 else
781 for (m = mons; m->next != selmon; m = m->next);
782 return m;
783 }
784
785 void
786 drawbar(Monitor *m)
787 {
788 int x, w, tw = 0;
789 int boxs = drw->fonts->h / 9;
790 int boxw = drw->fonts->h / 6 + 2;
791 unsigned int i, occ = 0, urg = 0;
792 Client *c;
793
794
795 int n = 0;
796
797 /* draw status first so it can be overdrawn by tags later */
798 if (m == selmon) { /* status is only drawn on selected monitor */
799 drw_setscheme(drw, scheme[SchemeNorm]);
800 tw = TEXTW(stext) - lrpad + 2; /* 2px right padding */
801 drw_text(drw, m->ww - tw, 0, tw, bh, 0, stext, 0);
802 }
803
804 for (c = m->clients; c; c = c->next) {
805
806 if (ISVISIBLE(c)) n++;
807
808 occ |= c->tags;
809 if (c->isurgent)
810 urg |= c->tags;
811 }
812 x = 0;
813 for (i = 0; i < LENGTH(tags); i++) {
814 w = TEXTW(tags[i]);
815 drw_setscheme(drw, scheme[m->tagset[m->seltags] & 1 << i ? SchemeSel : SchemeNorm]);
816 drw_text(drw, x, 0, w, bh, lrpad / 2, tags[i], urg & 1 << i);
817 if (occ & 1 << i)
818 drw_rect(drw, x + boxs, boxs, boxw, boxw,
819 m == selmon && selmon->sel && selmon->sel->tags & 1 << i,
820 urg & 1 << i);
821 x += w;
822 }
823 w = blw = TEXTW(m->ltsymbol);
824 drw_setscheme(drw, scheme[SchemeNorm]);
825 x = drw_text(drw, x, 0, w, bh, lrpad / 2, m->ltsymbol, 0);
826
827 if ((w = m->ww - tw - x) > bh) {
828 if (m->sel) {
829
830 drw_setscheme(drw, scheme[SchemeNorm]);
831
832 drw_setscheme(drw, scheme[m == selmon ? SchemeSel : SchemeNorm]);
833
834
835 if (n > 0) {
836 int remainder = w % n;
837 int tabw = (1.0 / (double)n) * w + 1;
838 for (c = m->clients; c; c = c->next) {
839 if (!ISVISIBLE(c)) continue;
840 drw_setscheme(drw, scheme[m->sel == c ? SchemeSel : SchemeNorm]);
841
842 if (n == 1) drw_setscheme(drw, scheme[SchemeNorm]);
843
844 if (remainder >= 0) {
845 if (remainder == 0)
846 tabw--;
847 remainder--;
848 }
849
850 int mid = tabw / 2 - TEXTW(c->name) / 2;
851
852 if (n == 1) mid = (m->ww - TEXTW(c->name)) / 2 - x;
853
854 mid = mid >= lrpad / 2 ? mid : lrpad / 2;
855 drw_text(drw, x, 0, tabw, bh, mid, c->name, 0);
856 if (c->isfloating)
857 drw_rect(drw, x + boxs + mid - 6, boxs, boxw, boxw, c->isfixed, 0);
858
859 drw_text(drw, x, 0, tabw, bh, lrpad / 2, c->name, 0);
860 if (c->isfloating)
861 drw_rect(drw, x + boxs, boxs, boxw, boxw, c->isfixed, 0);
862
863 x += tabw;
864 }
865 }
866
867 int mid = (m->ww - TEXTW(m->sel->name)) / 2 - x;
868 mid = mid >= lrpad / 2 ? mid : lrpad / 2;
869 drw_text(drw, x, 0, w, bh, mid, m->sel->name, 0);
870 if (m->sel->isfloating)
871 drw_rect(drw, x + boxs + mid - 6, boxs, boxw, boxw, m->sel->isfixed, 0);
872
873 drw_text(drw, x, 0, w, bh, lrpad / 2, m->sel->name, 0);
874 if (m->sel->isfloating)
875 drw_rect(drw, x + boxs, boxs, boxw, boxw, m->sel->isfixed, 0);
876
877 } else {
878 drw_setscheme(drw, scheme[SchemeNorm]);
879 drw_rect(drw, x, 0, w, bh, 1, 1);
880 }
881 }
882
883 m->bt = n;
884 m->btw = w;
885
886 drw_map(drw, m->barwin, 0, 0, m->ww, bh);
887 }
888
889 void
890 drawbars(void)
891 {
892 Monitor *m;
893
894 for (m = mons; m; m = m->next)
895 drawbar(m);
896 }
897
898 void
899 enternotify(XEvent *e)
900 {
901 Client *c;
902 Monitor *m;
903 XCrossingEvent *ev = &e->xcrossing;
904
905 if ((ev->mode != NotifyNormal || ev->detail == NotifyInferior) && ev->window != root)
906 return;
907 c = wintoclient(ev->window);
908 m = c ? c->mon : wintomon(ev->window);
909 if (m != selmon) {
910 unfocus(selmon->sel, 1);
911 selmon = m;
912 } else if (!c || c == selmon->sel)
913 return;
914 focus(c);
915 }
916
917 void
918 expose(XEvent *e)
919 {
920 Monitor *m;
921 XExposeEvent *ev = &e->xexpose;
922
923 if (ev->count == 0 && (m = wintomon(ev->window)))
924 drawbar(m);
925 }
926
927 void
928 focus(Client *c)
929 {
930 if (!c || !ISVISIBLE(c))
931 for (c = selmon->stack; c && !ISVISIBLE(c); c = c->snext);
932 if (selmon->sel && selmon->sel != c)
933 unfocus(selmon->sel, 0);
934 if (c) {
935 if (c->mon != selmon)
936 selmon = c->mon;
937 if (c->isurgent)
938 seturgent(c, 0);
939 detachstack(c);
940 attachstack(c);
941 grabbuttons(c, 1);
942 XSetWindowBorder(dpy, c->win, scheme[SchemeSel][ColBorder].pixel);
943 setfocus(c);
944 } else {
945 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
946 XDeleteProperty(dpy, root, netatom[NetActiveWindow]);
947 }
948 selmon->sel = c;
949 drawbars();
950 }
951
952 /* there are some broken focus acquiring clients needing extra handling */
953 void
954 focusin(XEvent *e)
955 {
956 XFocusChangeEvent *ev = &e->xfocus;
957
958 if (selmon->sel && ev->window != selmon->sel->win)
959 setfocus(selmon->sel);
960 }
961
962 void
963 focusmon(const Arg *arg)
964 {
965 Monitor *m;
966
967 if (!mons->next)
968 return;
969 if ((m = dirtomon(arg->i)) == selmon)
970 return;
971 unfocus(selmon->sel, 0);
972 selmon = m;
973 focus(NULL);
974 }
975
976 void
977 focusstack(const Arg *arg)
978 {
979 Client *c = NULL, *i;
980
981 if (!selmon->sel || (selmon->sel->isfullscreen && lockfullscreen))
982 return;
983 if (arg->i > 0) {
984 for (c = selmon->sel->next; c && !ISVISIBLE(c); c = c->next);
985 if (!c)
986 for (c = selmon->clients; c && !ISVISIBLE(c); c = c->next);
987 } else {
988 for (i = selmon->clients; i != selmon->sel; i = i->next)
989 if (ISVISIBLE(i))
990 c = i;
991 if (!c)
992 for (; i; i = i->next)
993 if (ISVISIBLE(i))
994 c = i;
995 }
996 if (c) {
997 focus(c);
998 restack(selmon);
999 }
1000 }
1001
1002 Atom
1003 getatomprop(Client *c, Atom prop)
1004 {
1005 int di;
1006 unsigned long dl;
1007 unsigned char *p = NULL;
1008 Atom da, atom = None;
1009
1010 if (XGetWindowProperty(dpy, c->win, prop, 0L, sizeof atom, False, XA_ATOM,
1011 &da, &di, &dl, &dl, &p) == Success && p) {
1012 atom = *(Atom *)p;
1013 XFree(p);
1014 }
1015 return atom;
1016 }
1017
1018 int
1019 getrootptr(int *x, int *y)
1020 {
1021 int di;
1022 unsigned int dui;
1023 Window dummy;
1024
1025 return XQueryPointer(dpy, root, &dummy, &dummy, x, y, &di, &di, &dui);
1026 }
1027
1028 long
1029 getstate(Window w)
1030 {
1031 int format;
1032 long result = -1;
1033 unsigned char *p = NULL;
1034 unsigned long n, extra;
1035 Atom real;
1036
1037 if (XGetWindowProperty(dpy, w, wmatom[WMState], 0L, 2L, False, wmatom[WMState],
1038 &real, &format, &n, &extra, (unsigned char **)&p) != Success)
1039 return -1;
1040 if (n != 0)
1041 result = *p;
1042 XFree(p);
1043 return result;
1044 }
1045
1046 int
1047 gettextprop(Window w, Atom atom, char *text, unsigned int size)
1048 {
1049 char **list = NULL;
1050 int n;
1051 XTextProperty name;
1052
1053 if (!text || size == 0)
1054 return 0;
1055 text[0] = '\0';
1056 if (!XGetTextProperty(dpy, w, &name, atom) || !name.nitems)
1057 return 0;
1058 if (name.encoding == XA_STRING)
1059 strncpy(text, (char *)name.value, size - 1);
1060 else {
1061 if (XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success && n > 0 && *list) {
1062 strncpy(text, *list, size - 1);
1063 XFreeStringList(list);
1064 }
1065 }
1066 text[size - 1] = '\0';
1067 XFree(name.value);
1068 return 1;
1069 }
1070
1071 void
1072 grabbuttons(Client *c, int focused)
1073 {
1074 updatenumlockmask();
1075 {
1076 unsigned int i, j;
1077 unsigned int modifiers[] = { 0, LockMask, numlockmask, numlockmask|LockMask };
1078 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
1079 if (!focused)
1080 XGrabButton(dpy, AnyButton, AnyModifier, c->win, False,
1081 BUTTONMASK, GrabModeSync, GrabModeSync, None, None);
1082 for (i = 0; i < LENGTH(buttons); i++)
1083 if (buttons[i].click == ClkClientWin)
1084 for (j = 0; j < LENGTH(modifiers); j++)
1085 XGrabButton(dpy, buttons[i].button,
1086 buttons[i].mask | modifiers[j],
1087 c->win, False, BUTTONMASK,
1088 GrabModeAsync, GrabModeSync, None, None);
1089 }
1090 }
1091
1092 void
1093 grabkeys(void)
1094 {
1095 updatenumlockmask();
1096 {
1097 unsigned int i, j;
1098 unsigned int modifiers[] = { 0, LockMask, numlockmask, numlockmask|LockMask };
1099 KeyCode code;
1100
1101 XUngrabKey(dpy, AnyKey, AnyModifier, root);
1102 for (i = 0; i < LENGTH(keys); i++)
1103 if ((code = XKeysymToKeycode(dpy, keys[i].keysym)))
1104 for (j = 0; j < LENGTH(modifiers); j++)
1105 XGrabKey(dpy, code, keys[i].mod | modifiers[j], root,
1106 True, GrabModeAsync, GrabModeAsync);
1107 }
1108 }
1109
1110 void
1111 incnmaster(const Arg *arg)
1112 {
1113
1114 selmon->nmaster = selmon->pertag->nmasters[selmon->pertag->curtag] = MAX(selmon->nmaster + arg->i, 0);
1115
1116 selmon->nmaster = MAX(selmon->nmaster + arg->i, 0);
1117
1118 arrange(selmon);
1119 }
1120
1121
1122 static int
1123 isuniquegeom(XineramaScreenInfo *unique, size_t n, XineramaScreenInfo *info)
1124 {
1125 while (n--)
1126 if (unique[n].x_org == info->x_org && unique[n].y_org == info->y_org
1127 && unique[n].width == info->width && unique[n].height == info->height)
1128 return 0;
1129 return 1;
1130 }
1131
1132
1133 void
1134 keypress(XEvent *e)
1135 {
1136 unsigned int i;
1137 KeySym keysym;
1138 XKeyEvent *ev;
1139
1140 ev = &e->xkey;
1141 keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
1142 for (i = 0; i < LENGTH(keys); i++)
1143 if (keysym == keys[i].keysym
1144 && CLEANMASK(keys[i].mod) == CLEANMASK(ev->state)
1145 && keys[i].func)
1146 keys[i].func(&(keys[i].arg));
1147 }
1148
1149 void
1150 killclient(const Arg *arg)
1151 {
1152 if (!selmon->sel)
1153 return;
1154 if (!sendevent(selmon->sel, wmatom[WMDelete])) {
1155 XGrabServer(dpy);
1156 XSetErrorHandler(xerrordummy);
1157 XSetCloseDownMode(dpy, DestroyAll);
1158 XKillClient(dpy, selmon->sel->win);
1159 XSync(dpy, False);
1160 XSetErrorHandler(xerror);
1161 XUngrabServer(dpy);
1162 }
1163 }
1164
1165 void
1166 manage(Window w, XWindowAttributes *wa)
1167 {
1168 Client *c, *t = NULL;
1169 Window trans = None;
1170 XWindowChanges wc;
1171
1172 c = ecalloc(1, sizeof(Client));
1173 c->win = w;
1174 /* geometry */
1175 c->x = c->oldx = wa->x;
1176 c->y = c->oldy = wa->y;
1177 c->w = c->oldw = wa->width;
1178 c->h = c->oldh = wa->height;
1179 c->oldbw = wa->border_width;
1180
1181 c->cfact = 1.0;
1182
1183
1184 updatetitle(c);
1185 if (XGetTransientForHint(dpy, w, &trans) && (t = wintoclient(trans))) {
1186 c->mon = t->mon;
1187 c->tags = t->tags;
1188 } else {
1189 c->mon = selmon;
1190 applyrules(c);
1191 }
1192
1193 if (c->x + WIDTH(c) > c->mon->mx + c->mon->mw)
1194 c->x = c->mon->mx + c->mon->mw - WIDTH(c);
1195 if (c->y + HEIGHT(c) > c->mon->my + c->mon->mh)
1196 c->y = c->mon->my + c->mon->mh - HEIGHT(c);
1197 c->x = MAX(c->x, c->mon->mx);
1198 /* only fix client y-offset, if the client center might cover the bar */
1199 c->y = MAX(c->y, ((c->mon->by == c->mon->my) && (c->x + (c->w / 2) >= c->mon->wx)
1200 && (c->x + (c->w / 2) < c->mon->wx + c->mon->ww)) ? bh : c->mon->my);
1201 c->bw = borderpx;
1202
1203 wc.border_width = c->bw;
1204 XConfigureWindow(dpy, w, CWBorderWidth, &wc);
1205 XSetWindowBorder(dpy, w, scheme[SchemeNorm][ColBorder].pixel);
1206 configure(c); /* propagates border_width, if size doesn't change */
1207 updatewindowtype(c);
1208 updatesizehints(c);
1209 updatewmhints(c);
1210
1211 if (c->x < snap) c->x = c->mon->mx + (c->mon->mw - WIDTH(c) ) / 2;
1212 if (c->y < snap) c->y = c->mon->my + (c->mon->mh - HEIGHT(c)) / 2;
1213
1214 XSelectInput(dpy, w, EnterWindowMask|FocusChangeMask|PropertyChangeMask|StructureNotifyMask);
1215 grabbuttons(c, 0);
1216 if (!c->isfloating)
1217 c->isfloating = c->oldstate = trans != None || c->isfixed;
1218 if (c->isfloating)
1219 XRaiseWindow(dpy, c->win);
1220 attach(c);
1221 attachstack(c);
1222 XChangeProperty(dpy, root, netatom[NetClientList], XA_WINDOW, 32, PropModeAppend,
1223 (unsigned char *) &(c->win), 1);
1224 XMoveResizeWindow(dpy, c->win, c->x + 2 * sw, c->y, c->w, c->h); /* some windows require this */
1225 setclientstate(c, NormalState);
1226 if (c->mon == selmon)
1227 unfocus(selmon->sel, 0);
1228 c->mon->sel = c;
1229 arrange(c->mon);
1230 XMapWindow(dpy, c->win);
1231 focus(NULL);
1232 }
1233
1234 void
1235 mappingnotify(XEvent *e)
1236 {
1237 XMappingEvent *ev = &e->xmapping;
1238
1239 XRefreshKeyboardMapping(ev);
1240 if (ev->request == MappingKeyboard)
1241 grabkeys();
1242 }
1243
1244 void
1245 maprequest(XEvent *e)
1246 {
1247 static XWindowAttributes wa;
1248 XMapRequestEvent *ev = &e->xmaprequest;
1249
1250 if (!XGetWindowAttributes(dpy, ev->window, &wa))
1251 return;
1252 if (wa.override_redirect)
1253 return;
1254 if (!wintoclient(ev->window))
1255 manage(ev->window, &wa);
1256 }
1257
1258 void
1259 monocle(Monitor *m)
1260 {
1261 unsigned int n = 0;
1262 Client *c;
1263
1264 for (c = m->clients; c; c = c->next)
1265 if (ISVISIBLE(c))
1266 n++;
1267 if (n > 0) /* override layout symbol */
1268 snprintf(m->ltsymbol, sizeof m->ltsymbol, "[%d]", n);
1269 for (c = nexttiled(m->clients); c; c = nexttiled(c->next))
1270 resize(c, m->wx, m->wy, m->ww - 2 * c->bw, m->wh - 2 * c->bw, 0);
1271 }
1272
1273 void
1274 motionnotify(XEvent *e)
1275 {
1276 static Monitor *mon = NULL;
1277 Monitor *m;
1278 XMotionEvent *ev = &e->xmotion;
1279
1280 if (ev->window != root)
1281 return;
1282 if ((m = recttomon(ev->x_root, ev->y_root, 1, 1)) != mon && mon) {
1283 unfocus(selmon->sel, 1);
1284 selmon = m;
1285 focus(NULL);
1286 }
1287 mon = m;
1288 }
1289
1290 void
1291 movemouse(const Arg *arg)
1292 {
1293 int x, y, ocx, ocy, nx, ny;
1294 Client *c;
1295 Monitor *m;
1296 XEvent ev;
1297 Time lasttime = 0;
1298
1299 if (!(c = selmon->sel))
1300 return;
1301 if (c->isfullscreen) /* no support moving fullscreen windows by mouse */
1302 return;
1303 restack(selmon);
1304 ocx = c->x;
1305 ocy = c->y;
1306 if (XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
1307 None, cursor[CurMove]->cursor, CurrentTime) != GrabSuccess)
1308 return;
1309 if (!getrootptr(&x, &y))
1310 return;
1311 do {
1312 XMaskEvent(dpy, MOUSEMASK|ExposureMask|SubstructureRedirectMask, &ev);
1313 switch(ev.type) {
1314 case ConfigureRequest:
1315 case Expose:
1316 case MapRequest:
1317 handler[ev.type](&ev);
1318 break;
1319 case MotionNotify:
1320 if ((ev.xmotion.time - lasttime) <= (1000 / 60))
1321 continue;
1322 lasttime = ev.xmotion.time;
1323
1324 nx = ocx + (ev.xmotion.x - x);
1325 ny = ocy + (ev.xmotion.y - y);
1326 if (abs(selmon->wx - nx) < snap)
1327 nx = selmon->wx;
1328 else if (abs((selmon->wx + selmon->ww) - (nx + WIDTH(c))) < snap)
1329 nx = selmon->wx + selmon->ww - WIDTH(c);
1330 if (abs(selmon->wy - ny) < snap)
1331 ny = selmon->wy;
1332 else if (abs((selmon->wy + selmon->wh) - (ny + HEIGHT(c))) < snap)
1333 ny = selmon->wy + selmon->wh - HEIGHT(c);
1334 if (!c->isfloating && selmon->lt[selmon->sellt]->arrange
1335 && (abs(nx - c->x) > snap || abs(ny - c->y) > snap))
1336 togglefloating(NULL);
1337 if (!selmon->lt[selmon->sellt]->arrange || c->isfloating)
1338 resize(c, nx, ny, c->w, c->h, 1);
1339 break;
1340 }
1341 } while (ev.type != ButtonRelease);
1342 XUngrabPointer(dpy, CurrentTime);
1343 if ((m = recttomon(c->x, c->y, c->w, c->h)) != selmon) {
1344 sendmon(c, m);
1345 selmon = m;
1346 focus(NULL);
1347 }
1348 }
1349
1350 Client *
1351 nexttiled(Client *c)
1352 {
1353 for (; c && (c->isfloating || !ISVISIBLE(c)); c = c->next);
1354 return c;
1355 }
1356
1357 void
1358 pop(Client *c)
1359 {
1360 detach(c);
1361 attach(c);
1362 focus(c);
1363 arrange(c->mon);
1364 }
1365
1366 void
1367 propertynotify(XEvent *e)
1368 {
1369 Client *c;
1370 Window trans;
1371 XPropertyEvent *ev = &e->xproperty;
1372
1373 if ((ev->window == root) && (ev->atom == XA_WM_NAME))
1374 updatestatus();
1375 else if (ev->state == PropertyDelete)
1376 return; /* ignore */
1377 else if ((c = wintoclient(ev->window))) {
1378 switch(ev->atom) {
1379 default: break;
1380 case XA_WM_TRANSIENT_FOR:
1381 if (!c->isfloating && (XGetTransientForHint(dpy, c->win, &trans)) &&
1382 (c->isfloating = (wintoclient(trans)) != NULL))
1383 arrange(c->mon);
1384 break;
1385 case XA_WM_NORMAL_HINTS:
1386 updatesizehints(c);
1387 break;
1388 case XA_WM_HINTS:
1389 updatewmhints(c);
1390 drawbars();
1391 break;
1392 }
1393 if (ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
1394 updatetitle(c);
1395 if (c == c->mon->sel)
1396 drawbar(c->mon);
1397 }
1398 if (ev->atom == netatom[NetWMWindowType])
1399 updatewindowtype(c);
1400 }
1401 }
1402
1403 void
1404 quit(const Arg *arg)
1405 {
1406 running = 0;
1407 }
1408
1409 Monitor *
1410 recttomon(int x, int y, int w, int h)
1411 {
1412 Monitor *m, *r = selmon;
1413 int a, area = 0;
1414
1415 for (m = mons; m; m = m->next)
1416 if ((a = INTERSECT(x, y, w, h, m)) > area) {
1417 area = a;
1418 r = m;
1419 }
1420 return r;
1421 }
1422
1423 void
1424 resize(Client *c, int x, int y, int w, int h, int interact)
1425 {
1426 if (applysizehints(c, &x, &y, &w, &h, interact))
1427 resizeclient(c, x, y, w, h);
1428 }
1429
1430 void
1431 resizeclient(Client *c, int x, int y, int w, int h)
1432 {
1433 XWindowChanges wc;
1434
1435 c->oldx = c->x; c->x = wc.x = x;
1436 c->oldy = c->y; c->y = wc.y = y;
1437 c->oldw = c->w; c->w = wc.width = w;
1438 c->oldh = c->h; c->h = wc.height = h;
1439 wc.border_width = c->bw;
1440 XConfigureWindow(dpy, c->win, CWX|CWY|CWWidth|CWHeight|CWBorderWidth, &wc);
1441 configure(c);
1442 XSync(dpy, False);
1443 }
1444
1445 void
1446 resizemouse(const Arg *arg)
1447 {
1448 int ocx, ocy, nw, nh;
1449 Client *c;
1450 Monitor *m;
1451 XEvent ev;
1452 Time lasttime = 0;
1453
1454 if (!(c = selmon->sel))
1455 return;
1456 if (c->isfullscreen) /* no support resizing fullscreen windows by mouse */
1457 return;
1458 restack(selmon);
1459 ocx = c->x;
1460 ocy = c->y;
1461 if (XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
1462 None, cursor[CurResize]->cursor, CurrentTime) != GrabSuccess)
1463 return;
1464
1465
1466 int horizcorner, vertcorner;
1467 int ocx2, ocy2, nx, ny;
1468 int di;
1469 unsigned int dui;
1470 Window dummy;
1471 ocx2 = c->x + c->w;
1472 ocy2 = c->y + c->h;
1473 if (!XQueryPointer (dpy, c->win, &dummy, &dummy, &di, &di, &nx, &ny, &dui))
1474 return;
1475 horizcorner = nx < c->w / 2;
1476 vertcorner = ny < c->h / 2;
1477 XWarpPointer (dpy, None, c->win, 0, 0, 0, 0,
1478 horizcorner ? (-c->bw) : (c->w + c->bw -1),
1479 vertcorner ? (-c->bw) : (c->h + c->bw -1));
1480
1481 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->bw - 1, c->h + c->bw - 1);
1482
1483 do {
1484 XMaskEvent(dpy, MOUSEMASK|ExposureMask|SubstructureRedirectMask, &ev);
1485 switch(ev.type) {
1486 case ConfigureRequest:
1487 case Expose:
1488 case MapRequest:
1489 handler[ev.type](&ev);
1490 break;
1491 case MotionNotify:
1492 if ((ev.xmotion.time - lasttime) <= (1000 / 60))
1493 continue;
1494 lasttime = ev.xmotion.time;
1495
1496 nw = MAX(ev.xmotion.x - ocx - 2 * c->bw + 1, 1);
1497 nh = MAX(ev.xmotion.y - ocy - 2 * c->bw + 1, 1);
1498
1499 nx = horizcorner ? ev.xmotion.x : c->x;
1500 ny = vertcorner ? ev.xmotion.y : c->y;
1501 nw = MAX(horizcorner ? (ocx2 - nx) : (ev.xmotion.x - ocx - 2 * c->bw + 1), 1);
1502 nh = MAX(vertcorner ? (ocy2 - ny) : (ev.xmotion.y - ocy - 2 * c->bw + 1), 1);
1503
1504 if (c->mon->wx + nw >= selmon->wx && c->mon->wx + nw <= selmon->wx + selmon->ww
1505 && c->mon->wy + nh >= selmon->wy && c->mon->wy + nh <= selmon->wy + selmon->wh)
1506 {
1507 if (!c->isfloating && selmon->lt[selmon->sellt]->arrange
1508 && (abs(nw - c->w) > snap || abs(nh - c->h) > snap))
1509 togglefloating(NULL);
1510 }
1511 if (!selmon->lt[selmon->sellt]->arrange || c->isfloating)
1512
1513 resize(c, nx, ny, nw, nh, 1);
1514
1515 resize(c, c->x, c->y, nw, nh, 1);
1516
1517 break;
1518 }
1519 } while (ev.type != ButtonRelease);
1520
1521 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0,
1522 horizcorner ? (-c->bw) : (c->w + c->bw - 1),
1523 vertcorner ? (-c->bw) : (c->h + c->bw - 1));
1524
1525 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->bw - 1, c->h + c->bw - 1);
1526
1527 XUngrabPointer(dpy, CurrentTime);
1528 while (XCheckMaskEvent(dpy, EnterWindowMask, &ev));
1529 if ((m = recttomon(c->x, c->y, c->w, c->h)) != selmon) {
1530 sendmon(c, m);
1531 selmon = m;
1532 focus(NULL);
1533 }
1534 }
1535
1536 void
1537 restack(Monitor *m)
1538 {
1539 Client *c;
1540 XEvent ev;
1541 XWindowChanges wc;
1542
1543 drawbar(m);
1544 if (!m->sel)
1545 return;
1546 if (m->sel->isfloating || !m->lt[m->sellt]->arrange)
1547 XRaiseWindow(dpy, m->sel->win);
1548 if (m->lt[m->sellt]->arrange) {
1549 wc.stack_mode = Below;
1550 wc.sibling = m->barwin;
1551 for (c = m->stack; c; c = c->snext)
1552 if (!c->isfloating && ISVISIBLE(c)) {
1553 XConfigureWindow(dpy, c->win, CWSibling|CWStackMode, &wc);
1554 wc.sibling = c->win;
1555 }
1556 }
1557 XSync(dpy, False);
1558 while (XCheckMaskEvent(dpy, EnterWindowMask, &ev));
1559 }
1560
1561 void
1562 run(void)
1563 {
1564 XEvent ev;
1565 /* main event loop */
1566 XSync(dpy, False);
1567 while (running && !XNextEvent(dpy, &ev))
1568 if (handler[ev.type])
1569 handler[ev.type](&ev); /* call handler */
1570 }
1571
1572 void
1573 scan(void)
1574 {
1575 unsigned int i, num;
1576 Window d1, d2, *wins = NULL;
1577 XWindowAttributes wa;
1578
1579 if (XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
1580 for (i = 0; i < num; i++) {
1581 if (!XGetWindowAttributes(dpy, wins[i], &wa)
1582 || wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
1583 continue;
1584 if (wa.map_state == IsViewable || getstate(wins[i]) == IconicState)
1585 manage(wins[i], &wa);
1586 }
1587 for (i = 0; i < num; i++) { /* now the transients */
1588 if (!XGetWindowAttributes(dpy, wins[i], &wa))
1589 continue;
1590 if (XGetTransientForHint(dpy, wins[i], &d1)
1591 && (wa.map_state == IsViewable || getstate(wins[i]) == IconicState))
1592 manage(wins[i], &wa);
1593 }
1594 if (wins)
1595 XFree(wins);
1596 }
1597 }
1598
1599 void
1600 sendmon(Client *c, Monitor *m)
1601 {
1602 if (c->mon == m)
1603 return;
1604 unfocus(c, 1);
1605 detach(c);
1606 detachstack(c);
1607 c->mon = m;
1608 c->tags = m->tagset[m->seltags]; /* assign tags of target monitor */
1609 attach(c);
1610 attachstack(c);
1611 focus(NULL);
1612 arrange(NULL);
1613 }
1614
1615 void
1616 setclientstate(Client *c, long state)
1617 {
1618 long data[] = { state, None };
1619
1620 XChangeProperty(dpy, c->win, wmatom[WMState], wmatom[WMState], 32,
1621 PropModeReplace, (unsigned char *)data, 2);
1622 }
1623
1624 int
1625 sendevent(Client *c, Atom proto)
1626 {
1627 int n;
1628 Atom *protocols;
1629 int exists = 0;
1630 XEvent ev;
1631
1632 if (XGetWMProtocols(dpy, c->win, &protocols, &n)) {
1633 while (!exists && n--)
1634 exists = protocols[n] == proto;
1635 XFree(protocols);
1636 }
1637 if (exists) {
1638 ev.type = ClientMessage;
1639 ev.xclient.window = c->win;
1640 ev.xclient.message_type = wmatom[WMProtocols];
1641 ev.xclient.format = 32;
1642 ev.xclient.data.l[0] = proto;
1643 ev.xclient.data.l[1] = CurrentTime;
1644 XSendEvent(dpy, c->win, False, NoEventMask, &ev);
1645 }
1646 return exists;
1647 }
1648
1649 void
1650 setfocus(Client *c)
1651 {
1652 if (!c->neverfocus) {
1653 XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
1654 XChangeProperty(dpy, root, netatom[NetActiveWindow],
1655 XA_WINDOW, 32, PropModeReplace,
1656 (unsigned char *) &(c->win), 1);
1657 }
1658 sendevent(c, wmatom[WMTakeFocus]);
1659 }
1660
1661 void
1662 setfullscreen(Client *c, int fullscreen)
1663 {
1664 if (fullscreen && !c->isfullscreen) {
1665 XChangeProperty(dpy, c->win, netatom[NetWMState], XA_ATOM, 32,
1666 PropModeReplace, (unsigned char*)&netatom[NetWMFullscreen], 1);
1667 c->isfullscreen = 1;
1668 c->oldstate = c->isfloating;
1669 c->oldbw = c->bw;
1670 c->bw = 0;
1671 c->isfloating = 1;
1672 resizeclient(c, c->mon->mx, c->mon->my, c->mon->mw, c->mon->mh);
1673 XRaiseWindow(dpy, c->win);
1674 } else if (!fullscreen && c->isfullscreen){
1675 XChangeProperty(dpy, c->win, netatom[NetWMState], XA_ATOM, 32,
1676 PropModeReplace, (unsigned char*)0, 0);
1677 c->isfullscreen = 0;
1678 c->isfloating = c->oldstate;
1679 c->bw = c->oldbw;
1680 c->x = c->oldx;
1681 c->y = c->oldy;
1682 c->w = c->oldw;
1683 c->h = c->oldh;
1684 resizeclient(c, c->x, c->y, c->w, c->h);
1685 arrange(c->mon);
1686 }
1687 }
1688
1689 void
1690 setlayout(const Arg *arg)
1691 {
1692
1693 if (!arg || !arg->v || arg->v != selmon->lt[selmon->sellt])
1694 selmon->sellt = selmon->pertag->sellts[selmon->pertag->curtag] ^= 1;
1695 if (arg && arg->v)
1696 selmon->lt[selmon->sellt] = selmon->pertag->ltidxs[selmon->pertag->curtag][selmon->sellt] = (Layout *)arg->v;
1697
1698 if (!arg || !arg->v || arg->v != selmon->lt[selmon->sellt])
1699 selmon->sellt ^= 1;
1700 if (arg && arg->v)
1701 selmon->lt[selmon->sellt] = (Layout *)arg->v;
1702
1703 strncpy(selmon->ltsymbol, selmon->lt[selmon->sellt]->symbol, sizeof selmon->ltsymbol);
1704 if (selmon->sel)
1705 arrange(selmon);
1706 else
1707 drawbar(selmon);
1708 }
1709
1710 /* arg > 1.0 will set mfact absolutely */
1711 void
1712 setmfact(const Arg *arg)
1713 {
1714 float f;
1715
1716 if (!arg || !selmon->lt[selmon->sellt]->arrange)
1717 return;
1718 f = arg->f < 1.0 ? arg->f + selmon->mfact : arg->f - 1.0;
1719 if (f < 0.05 || f > 0.95)
1720 return;
1721
1722 selmon->mfact = selmon->pertag->mfacts[selmon->pertag->curtag] = f;
1723
1724 selmon->mfact = f;
1725
1726 arrange(selmon);
1727 }
1728
1729 void
1730 setup(void)
1731 {
1732 int i;
1733 XSetWindowAttributes wa;
1734 Atom utf8string;
1735
1736 /* clean up any zombies immediately */
1737 sigchld(0);
1738
1739 /* init screen */
1740 screen = DefaultScreen(dpy);
1741 sw = DisplayWidth(dpy, screen);
1742 sh = DisplayHeight(dpy, screen);
1743 root = RootWindow(dpy, screen);
1744 drw = drw_create(dpy, screen, root, sw, sh);
1745 if (!drw_fontset_create(drw, fonts, LENGTH(fonts)))
1746 die("no fonts could be loaded.");
1747 lrpad = drw->fonts->h;
1748 bh = drw->fonts->h + 2;
1749 updategeom();
1750 /* init atoms */
1751 utf8string = XInternAtom(dpy, "UTF8_STRING", False);
1752 wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
1753 wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
1754 wmatom[WMState] = XInternAtom(dpy, "WM_STATE", False);
1755 wmatom[WMTakeFocus] = XInternAtom(dpy, "WM_TAKE_FOCUS", False);
1756 netatom[NetActiveWindow] = XInternAtom(dpy, "_NET_ACTIVE_WINDOW", False);
1757 netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
1758 netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
1759 netatom[NetWMState] = XInternAtom(dpy, "_NET_WM_STATE", False);
1760 netatom[NetWMCheck] = XInternAtom(dpy, "_NET_SUPPORTING_WM_CHECK", False);
1761 netatom[NetWMFullscreen] = XInternAtom(dpy, "_NET_WM_STATE_FULLSCREEN", False);
1762 netatom[NetWMWindowType] = XInternAtom(dpy, "_NET_WM_WINDOW_TYPE", False);
1763 netatom[NetWMWindowTypeDialog] = XInternAtom(dpy, "_NET_WM_WINDOW_TYPE_DIALOG", False);
1764 netatom[NetClientList] = XInternAtom(dpy, "_NET_CLIENT_LIST", False);
1765 /* init cursors */
1766 cursor[CurNormal] = drw_cur_create(drw, XC_left_ptr);
1767 cursor[CurResize] = drw_cur_create(drw, XC_sizing);
1768 cursor[CurMove] = drw_cur_create(drw, XC_fleur);
1769 /* init appearance */
1770 scheme = ecalloc(LENGTH(colors), sizeof(Clr *));
1771 for (i = 0; i < LENGTH(colors); i++)
1772 scheme[i] = drw_scm_create(drw, colors[i], 3);
1773 /* init bars */
1774 updatebars();
1775 updatestatus();
1776 /* supporting window for NetWMCheck */
1777 wmcheckwin = XCreateSimpleWindow(dpy, root, 0, 0, 1, 1, 0, 0, 0);
1778 XChangeProperty(dpy, wmcheckwin, netatom[NetWMCheck], XA_WINDOW, 32,
1779 PropModeReplace, (unsigned char *) &wmcheckwin, 1);
1780 XChangeProperty(dpy, wmcheckwin, netatom[NetWMName], utf8string, 8,
1781 PropModeReplace, (unsigned char *) "dwm", 3);
1782 XChangeProperty(dpy, root, netatom[NetWMCheck], XA_WINDOW, 32,
1783 PropModeReplace, (unsigned char *) &wmcheckwin, 1);
1784 /* EWMH support per view */
1785 XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
1786 PropModeReplace, (unsigned char *) netatom, NetLast);
1787 XDeleteProperty(dpy, root, netatom[NetClientList]);
1788 /* select events */
1789 wa.cursor = cursor[CurNormal]->cursor;
1790 wa.event_mask = SubstructureRedirectMask|SubstructureNotifyMask
1791 |ButtonPressMask|PointerMotionMask|EnterWindowMask
1792 |LeaveWindowMask|StructureNotifyMask|PropertyChangeMask;
1793 XChangeWindowAttributes(dpy, root, CWEventMask|CWCursor, &wa);
1794 XSelectInput(dpy, root, wa.event_mask);
1795 grabkeys();
1796 focus(NULL);
1797 }
1798
1799
1800 void
1801 seturgent(Client *c, int urg)
1802 {
1803 XWMHints *wmh;
1804
1805 c->isurgent = urg;
1806 if (!(wmh = XGetWMHints(dpy, c->win)))
1807 return;
1808 wmh->flags = urg ? (wmh->flags | XUrgencyHint) : (wmh->flags & ~XUrgencyHint);
1809 XSetWMHints(dpy, c->win, wmh);
1810 XFree(wmh);
1811 }
1812
1813 void
1814 showhide(Client *c)
1815 {
1816 if (!c)
1817 return;
1818 if (ISVISIBLE(c)) {
1819 /* show clients top down */
1820 XMoveWindow(dpy, c->win, c->x, c->y);
1821 if ((!c->mon->lt[c->mon->sellt]->arrange || c->isfloating) && !c->isfullscreen)
1822 resize(c, c->x, c->y, c->w, c->h, 0);
1823 showhide(c->snext);
1824 } else {
1825 /* hide clients bottom up */
1826 showhide(c->snext);
1827 XMoveWindow(dpy, c->win, WIDTH(c) * -2, c->y);
1828 }
1829 }
1830
1831 void
1832 sigchld(int unused)
1833 {
1834 if (signal(SIGCHLD, sigchld) == SIG_ERR)
1835 die("can't install SIGCHLD handler:");
1836 while (0 < waitpid(-1, NULL, WNOHANG));
1837 }
1838
1839 void
1840 spawn(const Arg *arg)
1841 {
1842 if (arg->v == dmenucmd)
1843 dmenumon[0] = '0' + selmon->num;
1844 if (fork() == 0) {
1845 if (dpy)
1846 close(ConnectionNumber(dpy));
1847 setsid();
1848 execvp(((char **)arg->v)[0], (char **)arg->v);
1849 fprintf(stderr, "dwm: execvp %s", ((char **)arg->v)[0]);
1850 perror(" failed");
1851 exit(EXIT_SUCCESS);
1852 }
1853 }
1854
1855 void
1856 tag(const Arg *arg)
1857 {
1858 if (selmon->sel && arg->ui & TAGMASK) {
1859 selmon->sel->tags = arg->ui & TAGMASK;
1860 focus(NULL);
1861 arrange(selmon);
1862 }
1863 }
1864
1865 void
1866 tagmon(const Arg *arg)
1867 {
1868 if (!selmon->sel || !mons->next)
1869 return;
1870 sendmon(selmon->sel, dirtomon(arg->i));
1871 }
1872
1873 void
1874 tile(Monitor *m)
1875 {
1876 unsigned int i, n, h, mw, my, ty;
1877 Client *c;
1878
1879 for (n = 0, c = nexttiled(m->clients); c; c = nexttiled(c->next), n++);
1880 if (n == 0)
1881 return;
1882
1883
1884 float mfacts = 0, sfacts = 0;
1885
1886 for (n = 0, c = nexttiled(m->clients); c; c = nexttiled(c->next), n++) {
1887 if (n < m->nmaster)
1888 mfacts += c->cfact;
1889 else
1890 sfacts += c->cfact;
1891 }
1892
1893
1894 if (n > m->nmaster)
1895 mw = m->nmaster ? m->ww * m->mfact : 0;
1896 else
1897 mw = m->ww;
1898 for (i = my = ty = 0, c = nexttiled(m->clients); c; c = nexttiled(c->next), i++)
1899 if (i < m->nmaster) {
1900 h = (m->wh - my) / (MIN(n, m->nmaster) - i);
1901
1902 h = (m->wh - my) * (c->cfact / mfacts);
1903 mfacts -= c->cfact;
1904
1905 resize(c, m->wx, m->wy + my, mw - (2*c->bw), h - (2*c->bw), 0);
1906 if (my + HEIGHT(c) < m->wh)
1907 my += HEIGHT(c);
1908 } else {
1909 h = (m->wh - ty) / (n - i);
1910
1911 h = (m->wh - ty) * (c->cfact / sfacts);
1912 sfacts -= c->cfact;
1913
1914 resize(c, m->wx + mw, m->wy + ty, m->ww - mw - (2*c->bw), h - (2*c->bw), 0);
1915 if (ty + HEIGHT(c) < m->wh)
1916 ty += HEIGHT(c);
1917 }
1918 }
1919
1920 void
1921 togglebar(const Arg *arg)
1922 {
1923
1924 selmon->showbar = selmon->pertag->showbars[selmon->pertag->curtag] = !selmon->showbar;
1925
1926 selmon->showbar = !selmon->showbar;
1927
1928 updatebarpos(selmon);
1929 XMoveResizeWindow(dpy, selmon->barwin, selmon->wx, selmon->by, selmon->ww, bh);
1930 arrange(selmon);
1931 }
1932
1933 void
1934 togglefloating(const Arg *arg)
1935 {
1936 if (!selmon->sel)
1937 return;
1938 if (selmon->sel->isfullscreen) /* no support for fullscreen windows */
1939 return;
1940 selmon->sel->isfloating = !selmon->sel->isfloating || selmon->sel->isfixed;
1941 if (selmon->sel->isfloating)
1942 resize(selmon->sel, selmon->sel->x, selmon->sel->y,
1943 selmon->sel->w, selmon->sel->h, 0);
1944 arrange(selmon);
1945 }
1946
1947 void
1948 toggletag(const Arg *arg)
1949 {
1950 unsigned int newtags;
1951
1952 if (!selmon->sel)
1953 return;
1954 newtags = selmon->sel->tags ^ (arg->ui & TAGMASK);
1955 if (newtags) {
1956 selmon->sel->tags = newtags;
1957 focus(NULL);
1958 arrange(selmon);
1959 }
1960 }
1961
1962 void
1963 toggleview(const Arg *arg)
1964 {
1965 unsigned int newtagset = selmon->tagset[selmon->seltags] ^ (arg->ui & TAGMASK);
1966
1967 if (newtagset) {
1968 selmon->tagset[selmon->seltags] = newtagset;
1969
1970 int i;
1971
1972 if (newtagset == ~0) {
1973 selmon->pertag->prevtag = selmon->pertag->curtag;
1974 selmon->pertag->curtag = 0;
1975 }
1976
1977 /* test if the user did not select the same tag */
1978 if (!(newtagset & 1 << (selmon->pertag->curtag - 1))) {
1979 selmon->pertag->prevtag = selmon->pertag->curtag;
1980 for (i = 0; !(newtagset & 1 << i); i++) ;
1981 selmon->pertag->curtag = i + 1;
1982 }
1983
1984 /* apply settings for this view */
1985 selmon->nmaster = selmon->pertag->nmasters[selmon->pertag->curtag];
1986 selmon->mfact = selmon->pertag->mfacts[selmon->pertag->curtag];
1987 selmon->sellt = selmon->pertag->sellts[selmon->pertag->curtag];
1988 selmon->lt[selmon->sellt] = selmon->pertag->ltidxs[selmon->pertag->curtag][selmon->sellt];
1989 selmon->lt[selmon->sellt^1] = selmon->pertag->ltidxs[selmon->pertag->curtag][selmon->sellt^1];
1990
1991 if (selmon->showbar != selmon->pertag->showbars[selmon->pertag->curtag])
1992 togglebar(NULL);
1993
1994 focus(NULL);
1995 arrange(selmon);
1996 }
1997 }
1998
1999 void
2000 unfocus(Client *c, int setfocus)
2001 {
2002 if (!c)
2003 return;
2004 grabbuttons(c, 0);
2005 XSetWindowBorder(dpy, c->win, scheme[SchemeNorm][ColBorder].pixel);
2006 if (setfocus) {
2007 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
2008 XDeleteProperty(dpy, root, netatom[NetActiveWindow]);
2009 }
2010 }
2011
2012 void
2013 unmanage(Client *c, int destroyed)
2014 {
2015 Monitor *m = c->mon;
2016 XWindowChanges wc;
2017
2018 detach(c);
2019 detachstack(c);
2020 if (!destroyed) {
2021 wc.border_width = c->oldbw;
2022 XGrabServer(dpy); /* avoid race conditions */
2023 XSetErrorHandler(xerrordummy);
2024 XConfigureWindow(dpy, c->win, CWBorderWidth, &wc); /* restore border */
2025 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
2026 setclientstate(c, WithdrawnState);
2027 XSync(dpy, False);
2028 XSetErrorHandler(xerror);
2029 XUngrabServer(dpy);
2030 }
2031 free(c);
2032 focus(NULL);
2033 updateclientlist();
2034 arrange(m);
2035 }
2036
2037 void
2038 unmapnotify(XEvent *e)
2039 {
2040 Client *c;
2041 XUnmapEvent *ev = &e->xunmap;
2042
2043 if ((c = wintoclient(ev->window))) {
2044 if (ev->send_event)
2045 setclientstate(c, WithdrawnState);
2046 else
2047 unmanage(c, 0);
2048 }
2049 }
2050
2051 void
2052 updatebars(void)
2053 {
2054 Monitor *m;
2055 XSetWindowAttributes wa = {
2056 .override_redirect = True,
2057 .background_pixmap = ParentRelative,
2058 .event_mask = ButtonPressMask|ExposureMask
2059 };
2060 XClassHint ch = {"dwm", "dwm"};
2061 for (m = mons; m; m = m->next) {
2062 if (m->barwin)
2063 continue;
2064 m->barwin = XCreateWindow(dpy, root, m->wx, m->by, m->ww, bh, 0, DefaultDepth(dpy, screen),
2065 CopyFromParent, DefaultVisual(dpy, screen),
2066 CWOverrideRedirect|CWBackPixmap|CWEventMask, &wa);
2067 XDefineCursor(dpy, m->barwin, cursor[CurNormal]->cursor);
2068 XMapRaised(dpy, m->barwin);
2069 XSetClassHint(dpy, m->barwin, &ch);
2070 }
2071 }
2072
2073 void
2074 updatebarpos(Monitor *m)
2075 {
2076 m->wy = m->my;
2077 m->wh = m->mh;
2078 if (m->showbar) {
2079 m->wh -= bh;
2080 m->by = m->topbar ? m->wy : m->wy + m->wh;
2081 m->wy = m->topbar ? m->wy + bh : m->wy;
2082 } else
2083 m->by = -bh;
2084 }
2085
2086 void
2087 updateclientlist()
2088 {
2089 Client *c;
2090 Monitor *m;
2091
2092 XDeleteProperty(dpy, root, netatom[NetClientList]);
2093 for (m = mons; m; m = m->next)
2094 for (c = m->clients; c; c = c->next)
2095 XChangeProperty(dpy, root, netatom[NetClientList],
2096 XA_WINDOW, 32, PropModeAppend,
2097 (unsigned char *) &(c->win), 1);
2098 }
2099
2100 int
2101 updategeom(void)
2102 {
2103 int dirty = 0;
2104
2105
2106 if (XineramaIsActive(dpy)) {
2107 int i, j, n, nn;
2108 Client *c;
2109 Monitor *m;
2110 XineramaScreenInfo *info = XineramaQueryScreens(dpy, &nn);
2111 XineramaScreenInfo *unique = NULL;
2112
2113 for (n = 0, m = mons; m; m = m->next, n++);
2114 /* only consider unique geometries as separate screens */
2115 unique = ecalloc(nn, sizeof(XineramaScreenInfo));
2116 for (i = 0, j = 0; i < nn; i++)
2117 if (isuniquegeom(unique, j, &info[i]))
2118 memcpy(&unique[j++], &info[i], sizeof(XineramaScreenInfo));
2119 XFree(info);
2120 nn = j;
2121 if (n <= nn) { /* new monitors available */
2122 for (i = 0; i < (nn - n); i++) {
2123 for (m = mons; m && m->next; m = m->next);
2124 if (m)
2125 m->next = createmon();
2126 else
2127 mons = createmon();
2128 }
2129 for (i = 0, m = mons; i < nn && m; m = m->next, i++)
2130 if (i >= n
2131 || unique[i].x_org != m->mx || unique[i].y_org != m->my
2132 || unique[i].width != m->mw || unique[i].height != m->mh)
2133 {
2134 dirty = 1;
2135 m->num = i;
2136 m->mx = m->wx = unique[i].x_org;
2137 m->my = m->wy = unique[i].y_org;
2138 m->mw = m->ww = unique[i].width;
2139 m->mh = m->wh = unique[i].height;
2140 updatebarpos(m);
2141 }
2142 } else { /* less monitors available nn < n */
2143 for (i = nn; i < n; i++) {
2144 for (m = mons; m && m->next; m = m->next);
2145 while ((c = m->clients)) {
2146 dirty = 1;
2147 m->clients = c->next;
2148 detachstack(c);
2149 c->mon = mons;
2150 attach(c);
2151 attachstack(c);
2152 }
2153 if (m == selmon)
2154 selmon = mons;
2155 cleanupmon(m);
2156 }
2157 }
2158 free(unique);
2159 } else
2160
2161 { /* default monitor setup */
2162 if (!mons)
2163 mons = createmon();
2164 if (mons->mw != sw || mons->mh != sh) {
2165 dirty = 1;
2166 mons->mw = mons->ww = sw;
2167 mons->mh = mons->wh = sh;
2168 updatebarpos(mons);
2169 }
2170 }
2171 if (dirty) {
2172 selmon = mons;
2173 selmon = wintomon(root);
2174 }
2175 return dirty;
2176 }
2177
2178 void
2179 updatenumlockmask(void)
2180 {
2181 unsigned int i, j;
2182 XModifierKeymap *modmap;
2183
2184 numlockmask = 0;
2185 modmap = XGetModifierMapping(dpy);
2186 for (i = 0; i < 8; i++)
2187 for (j = 0; j < modmap->max_keypermod; j++)
2188 if (modmap->modifiermap[i * modmap->max_keypermod + j]
2189 == XKeysymToKeycode(dpy, XK_Num_Lock))
2190 numlockmask = (1 << i);
2191 XFreeModifiermap(modmap);
2192 }
2193
2194 void
2195 updatesizehints(Client *c)
2196 {
2197 long msize;
2198 XSizeHints size;
2199
2200 if (!XGetWMNormalHints(dpy, c->win, &size, &msize))
2201 /* size is uninitialized, ensure that size.flags aren't used */
2202 size.flags = PSize;
2203 if (size.flags & PBaseSize) {
2204 c->basew = size.base_width;
2205 c->baseh = size.base_height;
2206 } else if (size.flags & PMinSize) {
2207 c->basew = size.min_width;
2208 c->baseh = size.min_height;
2209 } else
2210 c->basew = c->baseh = 0;
2211 if (size.flags & PResizeInc) {
2212 c->incw = size.width_inc;
2213 c->inch = size.height_inc;
2214 } else
2215 c->incw = c->inch = 0;
2216 if (size.flags & PMaxSize) {
2217 c->maxw = size.max_width;
2218 c->maxh = size.max_height;
2219 } else
2220 c->maxw = c->maxh = 0;
2221 if (size.flags & PMinSize) {
2222 c->minw = size.min_width;
2223 c->minh = size.min_height;
2224 } else if (size.flags & PBaseSize) {
2225 c->minw = size.base_width;
2226 c->minh = size.base_height;
2227 } else
2228 c->minw = c->minh = 0;
2229 if (size.flags & PAspect) {
2230 c->mina = (float)size.min_aspect.y / size.min_aspect.x;
2231 c->maxa = (float)size.max_aspect.x / size.max_aspect.y;
2232 } else
2233 c->maxa = c->mina = 0.0;
2234 c->isfixed = (c->maxw && c->maxh && c->maxw == c->minw && c->maxh == c->minh);
2235 }
2236
2237 void
2238 updatestatus(void)
2239 {
2240 if (!gettextprop(root, XA_WM_NAME, stext, sizeof(stext)))
2241 strcpy(stext, "dwm-"VERSION);
2242 drawbar(selmon);
2243 }
2244
2245 void
2246 updatetitle(Client *c)
2247 {
2248 if (!gettextprop(c->win, netatom[NetWMName], c->name, sizeof c->name))
2249 gettextprop(c->win, XA_WM_NAME, c->name, sizeof c->name);
2250 if (c->name[0] == '\0') /* hack to mark broken clients */
2251 strcpy(c->name, broken);
2252 }
2253
2254 void
2255 updatewindowtype(Client *c)
2256 {
2257 Atom state = getatomprop(c, netatom[NetWMState]);
2258 Atom wtype = getatomprop(c, netatom[NetWMWindowType]);
2259
2260 if (state == netatom[NetWMFullscreen])
2261 setfullscreen(c, 1);
2262 if (wtype == netatom[NetWMWindowTypeDialog])
2263 c->isfloating = 1;
2264 }
2265
2266 void
2267 updatewmhints(Client *c)
2268 {
2269 XWMHints *wmh;
2270
2271 if ((wmh = XGetWMHints(dpy, c->win))) {
2272 if (c == selmon->sel && wmh->flags & XUrgencyHint) {
2273 wmh->flags &= ~XUrgencyHint;
2274 XSetWMHints(dpy, c->win, wmh);
2275 } else
2276 c->isurgent = (wmh->flags & XUrgencyHint) ? 1 : 0;
2277 if (wmh->flags & InputHint)
2278 c->neverfocus = !wmh->input;
2279 else
2280 c->neverfocus = 0;
2281 XFree(wmh);
2282 }
2283 }
2284
2285 void
2286 view(const Arg *arg)
2287 {
2288
2289 int i;
2290 unsigned int tmptag;
2291
2292 if ((arg->ui & TAGMASK) == selmon->tagset[selmon->seltags])
2293 return;
2294 selmon->seltags ^= 1; /* toggle sel tagset */
2295 if (arg->ui & TAGMASK) {
2296 selmon->tagset[selmon->seltags] = arg->ui & TAGMASK;
2297 selmon->pertag->prevtag = selmon->pertag->curtag;
2298
2299 if (arg->ui == ~0)
2300 selmon->pertag->curtag = 0;
2301 else {
2302 for (i = 0; !(arg->ui & 1 << i); i++) ;
2303 selmon->pertag->curtag = i + 1;
2304 }
2305 } else {
2306 tmptag = selmon->pertag->prevtag;
2307 selmon->pertag->prevtag = selmon->pertag->curtag;
2308 selmon->pertag->curtag = tmptag;
2309 }
2310
2311 selmon->nmaster = selmon->pertag->nmasters[selmon->pertag->curtag];
2312 selmon->mfact = selmon->pertag->mfacts[selmon->pertag->curtag];
2313 selmon->sellt = selmon->pertag->sellts[selmon->pertag->curtag];
2314 selmon->lt[selmon->sellt] = selmon->pertag->ltidxs[selmon->pertag->curtag][selmon->sellt];
2315 selmon->lt[selmon->sellt^1] = selmon->pertag->ltidxs[selmon->pertag->curtag][selmon->sellt^1];
2316
2317
2318 if (selmon->showbar != selmon->pertag->showbars[selmon->pertag->curtag])
2319 togglebar(NULL);
2320
2321
2322 if ((arg->ui & TAGMASK) == selmon->tagset[selmon->seltags])
2323 return;
2324 selmon->seltags ^= 1; /* toggle sel tagset */
2325 if (arg->ui & TAGMASK)
2326 selmon->tagset[selmon->seltags] = arg->ui & TAGMASK;
2327
2328 focus(NULL);
2329 arrange(selmon);
2330 }
2331
2332 Client *
2333 wintoclient(Window w)
2334 {
2335 Client *c;
2336 Monitor *m;
2337
2338 for (m = mons; m; m = m->next)
2339 for (c = m->clients; c; c = c->next)
2340 if (c->win == w)
2341 return c;
2342 return NULL;
2343 }
2344
2345 Monitor *
2346 wintomon(Window w)
2347 {
2348 int x, y;
2349 Client *c;
2350 Monitor *m;
2351
2352 if (w == root && getrootptr(&x, &y))
2353 return recttomon(x, y, 1, 1);
2354 for (m = mons; m; m = m->next)
2355 if (w == m->barwin)
2356 return m;
2357 if ((c = wintoclient(w)))
2358 return c->mon;
2359 return selmon;
2360 }
2361
2362 /* There's no way to check accesses to destroyed windows, thus those cases are
2363 * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
2364 * default error handler, which may call exit. */
2365 int
2366 xerror(Display *dpy, XErrorEvent *ee)
2367 {
2368 if (ee->error_code == BadWindow
2369 || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
2370 || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
2371 || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
2372 || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
2373 || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
2374 || (ee->request_code == X_GrabButton && ee->error_code == BadAccess)
2375 || (ee->request_code == X_GrabKey && ee->error_code == BadAccess)
2376 || (ee->request_code == X_CopyArea && ee->error_code == BadDrawable))
2377 return 0;
2378 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
2379 ee->request_code, ee->error_code);
2380 return xerrorxlib(dpy, ee); /* may call exit */
2381 }
2382
2383 int
2384 xerrordummy(Display *dpy, XErrorEvent *ee)
2385 {
2386 return 0;
2387 }
2388
2389 /* Startup Error handler to check if another window manager
2390 * is already running. */
2391 int
2392 xerrorstart(Display *dpy, XErrorEvent *ee)
2393 {
2394 die("dwm: another window manager is already running");
2395 return -1;
2396 }
2397
2398 void
2399 zoom(const Arg *arg)
2400 {
2401 Client *c = selmon->sel;
2402
2403 if (!selmon->lt[selmon->sellt]->arrange
2404 || (selmon->sel && selmon->sel->isfloating))
2405 return;
2406 if (c == nexttiled(selmon->clients))
2407 if (!c || !(c = nexttiled(c->next)))
2408 return;
2409 pop(c);
2410 }
2411
2412 int
2413 main(int argc, char *argv[])
2414 {
2415 if (argc == 2 && !strcmp("-v", argv[1]))
2416 die("dwm-"VERSION);
2417 else if (argc != 1)
2418 die("usage: dwm [-v]");
2419 if (!setlocale(LC_CTYPE, "") || !XSupportsLocale())
2420 fputs("warning: no locale support\n", stderr);
2421 if (!(dpy = XOpenDisplay(NULL)))
2422 die("dwm: cannot open display");
2423 checkotherwm();
2424 setup();
2425
2426 if (pledge("stdio rpath proc exec", NULL) == -1)
2427 die("pledge");
2428
2429 scan();
2430 run();
2431 cleanup();
2432 XCloseDisplay(dpy);
2433 return EXIT_SUCCESS;
2434 }
2435
2436
2437 void
2438 togglewin(const Arg *arg)
2439 {
2440 Client *c = (Client*)arg->v;
2441
2442 if (c == selmon->sel) {
2443 focus(NULL);
2444 arrange(c->mon);
2445 } else {
2446 focus(c);
2447 restack(selmon);
2448 }
2449 }
2450
2451 void
2452 killwin(const Arg *arg)
2453 {
2454 selmon->sel = (Client*)arg->v;
2455 killclient(arg);
2456 }
2457
2458 void
2459 zoomwin(const Arg *arg)
2460 {
2461 togglewin(arg);
2462 zoom(arg);
2463 }
2464
2465
2466
2467 void
2468 setcfact(const Arg *arg) {
2469 float f;
2470 Client *c;
2471
2472 c = selmon->sel;
2473
2474 if(!arg || !c || !selmon->lt[selmon->sellt]->arrange)
2475 return;
2476 f = arg->f + c->cfact;
2477 if(arg->f == 0.0)
2478 f = 1.0;
2479 else if(f < 0.25 || f > 4.0)
2480 return;
2481 c->cfact = f;
2482 arrange(selmon);
2483 }
2484
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