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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 LENGTH(X) (sizeof X / sizeof X[0])
54 #define MOUSEMASK (BUTTONMASK|PointerMotionMask)
55 #define WIDTH(X) ((X)->w + 2 * (X)->bw)
56 #define HEIGHT(X) ((X)->h + 2 * (X)->bw)
57 #define TAGMASK ((1 << LENGTH(tags)) - 1)
58 #define TEXTW(X) (drw_fontset_getwidth(drw, (X)) + lrpad)
59 #define ColBorder 2
60
61 /* enums */
62 enum { CurNormal, CurResize, CurMove, CurLast }; /* cursor */
63 enum { SchemeNorm, SchemeSel }; /* color schemes */
64 enum { NetSupported, NetWMName, NetWMState, NetWMCheck,
65 NetWMFullscreen, NetActiveWindow, NetWMWindowType,
66 NetWMWindowTypeDialog, NetClientList, NetLast }; /* EWMH atoms */
67 enum { WMProtocols, WMDelete, WMState, WMTakeFocus, WMLast }; /* default atoms */
68 enum { ClkTagBar, ClkLtSymbol, ClkStatusText, ClkWinTitle,
69 ClkClientWin, ClkRootWin, ClkLast }; /* clicks */
70
71 typedef union {
72 int i;
73 unsigned int ui;
74 float f;
75 const void *v;
76 } Arg;
77
78 typedef struct {
79 unsigned int click;
80 unsigned int mask;
81 unsigned int button;
82 void (*func)(const Arg *arg);
83 const Arg arg;
84 } Button;
85
86 typedef struct Monitor Monitor;
87 typedef struct Client Client;
88 struct Client {
89 char name[256];
90 float mina, maxa;
91 int x, y, w, h;
92 int oldx, oldy, oldw, oldh;
93 int basew, baseh, incw, inch, maxw, maxh, minw, minh;
94 int bw, oldbw;
95 unsigned int tags;
96 int isfixed, isfloating, isurgent, neverfocus, oldstate, isfullscreen;
97 Client *next;
98 Client *snext;
99 Monitor *mon;
100 Window win;
101 };
102
103 typedef struct {
104 unsigned int mod;
105 KeySym keysym;
106 void (*func)(const Arg *);
107 const Arg arg;
108 } Key;
109
110 typedef struct {
111 const char *symbol;
112 void (*arrange)(Monitor *);
113 } Layout;
114
115 struct Monitor {
116 char ltsymbol[16];
117 float mfact;
118 int nmaster;
119 int num;
120 int by; /* bar geometry */
121 int mx, my, mw, mh; /* screen size */
122 int wx, wy, ww, wh; /* window area */
123 unsigned int seltags;
124 unsigned int sellt;
125 unsigned int tagset[2];
126 int showbar;
127 int topbar;
128 Client *clients;
129 Client *sel;
130 Client *stack;
131 Monitor *next;
132 Window barwin;
133 const Layout *lt[2];
134 };
135
136 typedef struct {
137 const char *class;
138 const char *instance;
139 const char *title;
140 unsigned int tags;
141 int isfloating;
142 int monitor;
143 } Rule;
144
145 /* function declarations */
146 static void applyrules(Client *c);
147 static int applysizehints(Client *c, int *x, int *y, int *w, int *h, int interact);
148 static void arrange(Monitor *m);
149 static void arrangemon(Monitor *m);
150 static void attach(Client *c);
151 static void attachstack(Client *c);
152 static void buttonpress(XEvent *e);
153 static void checkotherwm(void);
154 static void cleanup(void);
155 static void cleanupmon(Monitor *mon);
156 static void clientmessage(XEvent *e);
157 static void configure(Client *c);
158 static void configurenotify(XEvent *e);
159 static void configurerequest(XEvent *e);
160 static Monitor *createmon(void);
161 static void destroynotify(XEvent *e);
162 static void detach(Client *c);
163 static void detachstack(Client *c);
164 static Monitor *dirtomon(int dir);
165 static void drawbar(Monitor *m);
166 static void drawbars(void);
167 static void enternotify(XEvent *e);
168 static void expose(XEvent *e);
169 static void focus(Client *c);
170 static void focusin(XEvent *e);
171 static void focusmon(const Arg *arg);
172 static void focusstack(const Arg *arg);
173 static int getrootptr(int *x, int *y);
174 static long getstate(Window w);
175 static int gettextprop(Window w, Atom atom, char *text, unsigned int size);
176 static void grabbuttons(Client *c, int focused);
177 static void grabkeys(void);
178 static void incnmaster(const Arg *arg);
179 static void keypress(XEvent *e);
180 static void killclient(const Arg *arg);
181 static void manage(Window w, XWindowAttributes *wa);
182 static void mappingnotify(XEvent *e);
183 static void maprequest(XEvent *e);
184 static void monocle(Monitor *m);
185 static void motionnotify(XEvent *e);
186 static void movemouse(const Arg *arg);
187 static Client *nexttiled(Client *c);
188 static void pop(Client *);
189 static void propertynotify(XEvent *e);
190 static void quit(const Arg *arg);
191 static Monitor *recttomon(int x, int y, int w, int h);
192 static void resize(Client *c, int x, int y, int w, int h, int interact);
193 static void resizeclient(Client *c, int x, int y, int w, int h);
194 static void resizemouse(const Arg *arg);
195 static void restack(Monitor *m);
196 static void run(void);
197 static void scan(void);
198 static int sendevent(Client *c, Atom proto);
199 static void sendmon(Client *c, Monitor *m);
200 static void setclientstate(Client *c, long state);
201 static void setfocus(Client *c);
202 static void setfullscreen(Client *c, int fullscreen);
203 static void setlayout(const Arg *arg);
204 static void setmfact(const Arg *arg);
205 static void setup(void);
206 static void seturgent(Client *c, int urg);
207 static void showhide(Client *c);
208 static void sigchld(int unused);
209 static void spawn(const Arg *arg);
210 static void tag(const Arg *arg);
211 static void tagmon(const Arg *arg);
212 static void tile(Monitor *);
213 static void togglebar(const Arg *arg);
214 static void togglefloating(const Arg *arg);
215 static void toggletag(const Arg *arg);
216 static void toggleview(const Arg *arg);
217 static void unfocus(Client *c, int setfocus);
218 static void unmanage(Client *c, int destroyed);
219 static void unmapnotify(XEvent *e);
220 static int updategeom(void);
221 static void updatebarpos(Monitor *m);
222 static void updatebars(void);
223 static void updateclientlist(void);
224 static void updatenumlockmask(void);
225 static void updatesizehints(Client *c);
226 static void updatestatus(void);
227 static void updatewindowtype(Client *c);
228 static void updatetitle(Client *c);
229 static void updatewmhints(Client *c);
230 static void view(const Arg *arg);
231 static Client *wintoclient(Window w);
232 static Monitor *wintomon(Window w);
233 static int xerror(Display *dpy, XErrorEvent *ee);
234 static int xerrordummy(Display *dpy, XErrorEvent *ee);
235 static int xerrorstart(Display *dpy, XErrorEvent *ee);
236 static void zoom(const Arg *arg);
237
238 /* variables */
239 static const char broken[] = "broken";
240 static char stext[256];
241 static int screen;
242 static int sw, sh; /* X display screen geometry width, height */
243 static int bh, blw = 0; /* bar geometry */
244 static int lrpad; /* sum of left and right padding for text */
245 static int (*xerrorxlib)(Display *, XErrorEvent *);
246 static unsigned int numlockmask = 0;
247 static void (*handler[LASTEvent]) (XEvent *) = {
248 [ButtonPress] = buttonpress,
249 [ClientMessage] = clientmessage,
250 [ConfigureRequest] = configurerequest,
251 [ConfigureNotify] = configurenotify,
252 [DestroyNotify] = destroynotify,
253 [EnterNotify] = enternotify,
254 [Expose] = expose,
255 [FocusIn] = focusin,
256 [KeyPress] = keypress,
257 [MappingNotify] = mappingnotify,
258 [MapRequest] = maprequest,
259 [MotionNotify] = motionnotify,
260 [PropertyNotify] = propertynotify,
261 [UnmapNotify] = unmapnotify
262 };
263 static Atom wmatom[WMLast], netatom[NetLast];
264 static int running = 1;
265 static Cur *cursor[CurLast];
266 static Scm *scheme;
267 static Display *dpy;
268 static Drw *drw;
269 static Monitor *mons, *selmon;
270 static Window root, wmcheckwin;
271
272 /* configuration, allows nested code to access above variables */
273 #include "config.h"
274
275 /* compile-time check if all tags fit into an unsigned int bit array. */
276 struct NumTags { char limitexceeded[LENGTH(tags) > 31 ? -1 : 1]; };
277
278 /* function implementations */
279 void
280 applyrules(Client *c)
281 {
282 const char *class, *instance;
283 unsigned int i;
284 const Rule *r;
285 Monitor *m;
286 XClassHint ch = { NULL, NULL };
287
288 /* rule matching */
289 c->isfloating = 0;
290 c->tags = 0;
291 XGetClassHint(dpy, c->win, &ch);
292 class = ch.res_class ? ch.res_class : broken;
293 instance = ch.res_name ? ch.res_name : broken;
294
295 for (i = 0; i < LENGTH(rules); i++) {
296 r = &rules[i];
297 if ((!r->title || strstr(c->name, r->title))
298 && (!r->class || strstr(class, r->class))
299 && (!r->instance || strstr(instance, r->instance)))
300 {
301 c->isfloating = r->isfloating;
302 c->tags |= r->tags;
303 for (m = mons; m && m->num != r->monitor; m = m->next);
304 if (m)
305 c->mon = m;
306 }
307 }
308 if (ch.res_class)
309 XFree(ch.res_class);
310 if (ch.res_name)
311 XFree(ch.res_name);
312 c->tags = c->tags & TAGMASK ? c->tags & TAGMASK : c->mon->tagset[c->mon->seltags];
313 }
314
315 int
316 applysizehints(Client *c, int *x, int *y, int *w, int *h, int interact)
317 {
318 int baseismin;
319 Monitor *m = c->mon;
320
321 /* set minimum possible */
322 *w = MAX(1, *w);
323 *h = MAX(1, *h);
324 if (interact) {
325 if (*x > sw)
326 *x = sw - WIDTH(c);
327 if (*y > sh)
328 *y = sh - HEIGHT(c);
329 if (*x + *w + 2 * c->bw < 0)
330 *x = 0;
331 if (*y + *h + 2 * c->bw < 0)
332 *y = 0;
333 } else {
334 if (*x >= m->wx + m->ww)
335 *x = m->wx + m->ww - WIDTH(c);
336 if (*y >= m->wy + m->wh)
337 *y = m->wy + m->wh - HEIGHT(c);
338 if (*x + *w + 2 * c->bw <= m->wx)
339 *x = m->wx;
340 if (*y + *h + 2 * c->bw <= m->wy)
341 *y = m->wy;
342 }
343 if (*h < bh)
344 *h = bh;
345 if (*w < bh)
346 *w = bh;
347 if (resizehints || c->isfloating || !c->mon->lt[c->mon->sellt]->arrange) {
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 + blw)
442 click = ClkLtSymbol;
443 else if (ev->x > selmon->ww - TEXTW(stext))
444 click = ClkStatusText;
445 else
446 click = ClkWinTitle;
447 } else if ((c = wintoclient(ev->window))) {
448 focus(c);
449 click = ClkClientWin;
450 }
451 for (i = 0; i < LENGTH(buttons); i++)
452 if (click == buttons[i].click && buttons[i].func && buttons[i].button == ev->button
453 && CLEANMASK(buttons[i].mask) == CLEANMASK(ev->state))
454 buttons[i].func(click == ClkTagBar && buttons[i].arg.i == 0 ? &arg : &buttons[i].arg);
455 }
456
457 void
458 checkotherwm(void)
459 {
460 xerrorxlib = XSetErrorHandler(xerrorstart);
461 /* this causes an error if some other window manager is running */
462 XSelectInput(dpy, DefaultRootWindow(dpy), SubstructureRedirectMask);
463 XSync(dpy, False);
464 XSetErrorHandler(xerror);
465 XSync(dpy, False);
466 }
467
468 void
469 cleanup(void)
470 {
471 Arg a = {.ui = ~0};
472 Layout foo = { "", NULL };
473 Monitor *m;
474 size_t i;
475
476 view(&a);
477 selmon->lt[selmon->sellt] = &foo;
478 for (m = mons; m; m = m->next)
479 while (m->stack)
480 unmanage(m->stack, 0);
481 XUngrabKey(dpy, AnyKey, AnyModifier, root);
482 while (mons)
483 cleanupmon(mons);
484 for (i = 0; i < CurLast; i++)
485 drw_cur_free(drw, cursor[i]);
486 for (i = 0; i < LENGTH(colors); i++)
487 free(scheme[i]);
488 XDestroyWindow(dpy, wmcheckwin);
489 drw_free(drw);
490 XSync(dpy, False);
491 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
492 XDeleteProperty(dpy, root, netatom[NetActiveWindow]);
493 }
494
495 void
496 cleanupmon(Monitor *mon)
497 {
498 Monitor *m;
499
500 if (mon == mons)
501 mons = mons->next;
502 else {
503 for (m = mons; m && m->next != mon; m = m->next);
504 m->next = mon->next;
505 }
506 XUnmapWindow(dpy, mon->barwin);
507 XDestroyWindow(dpy, mon->barwin);
508 free(mon);
509 }
510
511 void
512 clientmessage(XEvent *e)
513 {
514 XClientMessageEvent *cme = &e->xclient;
515 Client *c = wintoclient(cme->window);
516
517 if (!c)
518 return;
519 if (cme->message_type == netatom[NetWMState]) {
520 if (cme->data.l[1] == netatom[NetWMFullscreen]
521 || cme->data.l[2] == netatom[NetWMFullscreen])
522 setfullscreen(c, (cme->data.l[0] == 1 /* _NET_WM_STATE_ADD */
523 || (cme->data.l[0] == 2 /* _NET_WM_STATE_TOGGLE */ && !c->isfullscreen)));
524 } else if (cme->message_type == netatom[NetActiveWindow]) {
525 if (c != selmon->sel && !c->isurgent)
526 seturgent(c, 1);
527 }
528 }
529
530 void
531 configure(Client *c)
532 {
533 XConfigureEvent ce;
534
535 ce.type = ConfigureNotify;
536 ce.display = dpy;
537 ce.event = c->win;
538 ce.window = c->win;
539 ce.x = c->x;
540 ce.y = c->y;
541 ce.width = c->w;
542 ce.height = c->h;
543 ce.border_width = c->bw;
544 ce.above = None;
545 ce.override_redirect = False;
546 XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&ce);
547 }
548
549 void
550 configurenotify(XEvent *e)
551 {
552 Monitor *m;
553 Client *c;
554 XConfigureEvent *ev = &e->xconfigure;
555 int dirty;
556
557 /* TODO: updategeom handling sucks, needs to be simplified */
558 if (ev->window == root) {
559 dirty = (sw != ev->width || sh != ev->height);
560 sw = ev->width;
561 sh = ev->height;
562 if (updategeom() || dirty) {
563 drw_resize(drw, sw, bh);
564 updatebars();
565 for (m = mons; m; m = m->next) {
566 for (c = m->clients; c; c = c->next)
567 if (c->isfullscreen)
568 resizeclient(c, m->mx, m->my, m->mw, m->mh);
569 XMoveResizeWindow(dpy, m->barwin, m->wx, m->by, m->ww, bh);
570 }
571 focus(NULL);
572 arrange(NULL);
573 }
574 }
575 }
576
577 void
578 configurerequest(XEvent *e)
579 {
580 Client *c;
581 Monitor *m;
582 XConfigureRequestEvent *ev = &e->xconfigurerequest;
583 XWindowChanges wc;
584
585 if ((c = wintoclient(ev->window))) {
586 if (ev->value_mask & CWBorderWidth)
587 c->bw = ev->border_width;
588 else if (c->isfloating || !selmon->lt[selmon->sellt]->arrange) {
589 m = c->mon;
590 if (ev->value_mask & CWX) {
591 c->oldx = c->x;
592 c->x = m->mx + ev->x;
593 }
594 if (ev->value_mask & CWY) {
595 c->oldy = c->y;
596 c->y = m->my + ev->y;
597 }
598 if (ev->value_mask & CWWidth) {
599 c->oldw = c->w;
600 c->w = ev->width;
601 }
602 if (ev->value_mask & CWHeight) {
603 c->oldh = c->h;
604 c->h = ev->height;
605 }
606 if ((c->x + c->w) > m->mx + m->mw && c->isfloating)
607 c->x = m->mx + (m->mw / 2 - WIDTH(c) / 2); /* center in x direction */
608 if ((c->y + c->h) > m->my + m->mh && c->isfloating)
609 c->y = m->my + (m->mh / 2 - HEIGHT(c) / 2); /* center in y direction */
610 if ((ev->value_mask & (CWX|CWY)) && !(ev->value_mask & (CWWidth|CWHeight)))
611 configure(c);
612 if (ISVISIBLE(c))
613 XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
614 } else
615 configure(c);
616 } else {
617 wc.x = ev->x;
618 wc.y = ev->y;
619 wc.width = ev->width;
620 wc.height = ev->height;
621 wc.border_width = ev->border_width;
622 wc.sibling = ev->above;
623 wc.stack_mode = ev->detail;
624 XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
625 }
626 XSync(dpy, False);
627 }
628
629 Monitor *
630 createmon(void)
631 {
632 Monitor *m;
633
634 m = ecalloc(1, sizeof(Monitor));
635 m->tagset[0] = m->tagset[1] = 1;
636 m->mfact = mfact;
637 m->nmaster = nmaster;
638 m->showbar = showbar;
639 m->topbar = topbar;
640 m->lt[0] = &layouts[0];
641 m->lt[1] = &layouts[1 % LENGTH(layouts)];
642 strncpy(m->ltsymbol, layouts[0].symbol, sizeof m->ltsymbol);
643 return m;
644 }
645
646 void
647 destroynotify(XEvent *e)
648 {
649 Client *c;
650 XDestroyWindowEvent *ev = &e->xdestroywindow;
651
652 if ((c = wintoclient(ev->window)))
653 unmanage(c, 1);
654 }
655
656 void
657 detach(Client *c)
658 {
659 Client **tc;
660
661 for (tc = &c->mon->clients; *tc && *tc != c; tc = &(*tc)->next);
662 *tc = c->next;
663 }
664
665 void
666 detachstack(Client *c)
667 {
668 Client **tc, *t;
669
670 for (tc = &c->mon->stack; *tc && *tc != c; tc = &(*tc)->snext);
671 *tc = c->snext;
672
673 if (c == c->mon->sel) {
674 for (t = c->mon->stack; t && !ISVISIBLE(t); t = t->snext);
675 c->mon->sel = t;
676 }
677 }
678
679 Monitor *
680 dirtomon(int dir)
681 {
682 Monitor *m = NULL;
683
684 if (dir > 0) {
685 if (!(m = selmon->next))
686 m = mons;
687 } else if (selmon == mons)
688 for (m = mons; m->next; m = m->next);
689 else
690 for (m = mons; m->next != selmon; m = m->next);
691 return m;
692 }
693
694 void
695 drawbar(Monitor *m)
696 {
697 int x, w, sw = 0;
698 int boxs = drw->fonts->h / 9;
699 int boxw = drw->fonts->h / 6 + 2;
700 unsigned int i, occ = 0, urg = 0;
701 Client *c;
702
703 /* draw status first so it can be overdrawn by tags later */
704 if (m == selmon) { /* status is only drawn on selected monitor */
705 drw_setscheme(drw, scheme[SchemeNorm]);
706 sw = TEXTW(stext) - lrpad + 2; /* 2px right padding */
707 drw_text(drw, m->ww - sw, 0, sw, bh, 0, stext, 0);
708 }
709
710 for (c = m->clients; c; c = c->next) {
711 occ |= c->tags;
712 if (c->isurgent)
713 urg |= c->tags;
714 }
715 x = 0;
716 for (i = 0; i < LENGTH(tags); i++) {
717 w = TEXTW(tags[i]);
718 drw_setscheme(drw, scheme[m->tagset[m->seltags] & 1 << i ? SchemeSel : SchemeNorm]);
719 drw_text(drw, x, 0, w, bh, lrpad / 2, tags[i], urg & 1 << i);
720 if (occ & 1 << i)
721 drw_rect(drw, x + boxs, boxs, boxw, boxw,
722 m == selmon && selmon->sel && selmon->sel->tags & 1 << i,
723 urg & 1 << i);
724 x += w;
725 }
726 w = blw = TEXTW(m->ltsymbol);
727 drw_setscheme(drw, scheme[SchemeNorm]);
728 x = drw_text(drw, x, 0, w, bh, lrpad / 2, m->ltsymbol, 0);
729
730 if ((w = m->ww - sw - x) > bh) {
731 if (m->sel) {
732 drw_setscheme(drw, scheme[m == selmon ? SchemeSel : SchemeNorm]);
733 drw_text(drw, x, 0, w, bh, lrpad / 2, m->sel->name, 0);
734 if (m->sel->isfloating)
735 drw_rect(drw, x + boxs, boxs, boxw, boxw, m->sel->isfixed, 0);
736 } else {
737 drw_setscheme(drw, scheme[SchemeNorm]);
738 drw_rect(drw, x, 0, w, bh, 1, 1);
739 }
740 }
741 drw_map(drw, m->barwin, 0, 0, m->ww, bh);
742 }
743
744 void
745 drawbars(void)
746 {
747 Monitor *m;
748
749 for (m = mons; m; m = m->next)
750 drawbar(m);
751 }
752
753 void
754 enternotify(XEvent *e)
755 {
756 Client *c;
757 Monitor *m;
758 XCrossingEvent *ev = &e->xcrossing;
759
760 if ((ev->mode != NotifyNormal || ev->detail == NotifyInferior) && ev->window != root)
761 return;
762 c = wintoclient(ev->window);
763 m = c ? c->mon : wintomon(ev->window);
764 if (m != selmon) {
765 unfocus(selmon->sel, 1);
766 selmon = m;
767 } else if (!c || c == selmon->sel)
768 return;
769 focus(c);
770 }
771
772 void
773 expose(XEvent *e)
774 {
775 Monitor *m;
776 XExposeEvent *ev = &e->xexpose;
777
778 if (ev->count == 0 && (m = wintomon(ev->window)))
779 drawbar(m);
780 }
781
782 void
783 focus(Client *c)
784 {
785 if (!c || !ISVISIBLE(c))
786 for (c = selmon->stack; c && !ISVISIBLE(c); c = c->snext);
787 if (selmon->sel && selmon->sel != c)
788 unfocus(selmon->sel, 0);
789 if (c) {
790 if (c->mon != selmon)
791 selmon = c->mon;
792 if (c->isurgent)
793 seturgent(c, 0);
794 detachstack(c);
795 attachstack(c);
796 grabbuttons(c, 1);
797 XSetWindowBorder(dpy, c->win, scheme[SchemeSel][ColBorder].pixel);
798 setfocus(c);
799 } else {
800 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
801 XDeleteProperty(dpy, root, netatom[NetActiveWindow]);
802 }
803 selmon->sel = c;
804 drawbars();
805 }
806
807 /* there are some broken focus acquiring clients needing extra handling */
808 void
809 focusin(XEvent *e)
810 {
811 XFocusChangeEvent *ev = &e->xfocus;
812
813 if (selmon->sel && ev->window != selmon->sel->win)
814 setfocus(selmon->sel);
815 }
816
817 void
818 focusmon(const Arg *arg)
819 {
820 Monitor *m;
821
822 if (!mons->next)
823 return;
824 if ((m = dirtomon(arg->i)) == selmon)
825 return;
826 unfocus(selmon->sel, 0);
827 selmon = m;
828 focus(NULL);
829 }
830
831 void
832 focusstack(const Arg *arg)
833 {
834 Client *c = NULL, *i;
835
836 if (!selmon->sel)
837 return;
838 if (arg->i > 0) {
839 for (c = selmon->sel->next; c && !ISVISIBLE(c); c = c->next);
840 if (!c)
841 for (c = selmon->clients; c && !ISVISIBLE(c); c = c->next);
842 } else {
843 for (i = selmon->clients; i != selmon->sel; i = i->next)
844 if (ISVISIBLE(i))
845 c = i;
846 if (!c)
847 for (; i; i = i->next)
848 if (ISVISIBLE(i))
849 c = i;
850 }
851 if (c) {
852 focus(c);
853 restack(selmon);
854 }
855 }
856
857 Atom
858 getatomprop(Client *c, Atom prop)
859 {
860 int di;
861 unsigned long dl;
862 unsigned char *p = NULL;
863 Atom da, atom = None;
864
865 if (XGetWindowProperty(dpy, c->win, prop, 0L, sizeof atom, False, XA_ATOM,
866 &da, &di, &dl, &dl, &p) == Success && p) {
867 atom = *(Atom *)p;
868 XFree(p);
869 }
870 return atom;
871 }
872
873 int
874 getrootptr(int *x, int *y)
875 {
876 int di;
877 unsigned int dui;
878 Window dummy;
879
880 return XQueryPointer(dpy, root, &dummy, &dummy, x, y, &di, &di, &dui);
881 }
882
883 long
884 getstate(Window w)
885 {
886 int format;
887 long result = -1;
888 unsigned char *p = NULL;
889 unsigned long n, extra;
890 Atom real;
891
892 if (XGetWindowProperty(dpy, w, wmatom[WMState], 0L, 2L, False, wmatom[WMState],
893 &real, &format, &n, &extra, (unsigned char **)&p) != Success)
894 return -1;
895 if (n != 0)
896 result = *p;
897 XFree(p);
898 return result;
899 }
900
901 int
902 gettextprop(Window w, Atom atom, char *text, unsigned int size)
903 {
904 char **list = NULL;
905 int n;
906 XTextProperty name;
907
908 if (!text || size == 0)
909 return 0;
910 text[0] = '\0';
911 XGetTextProperty(dpy, w, &name, atom);
912 if (!name.nitems)
913 return 0;
914 if (name.encoding == XA_STRING)
915 strncpy(text, (char *)name.value, size - 1);
916 else {
917 if (XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success && n > 0 && *list) {
918 strncpy(text, *list, size - 1);
919 XFreeStringList(list);
920 }
921 }
922 text[size - 1] = '\0';
923 XFree(name.value);
924 return 1;
925 }
926
927 void
928 grabbuttons(Client *c, int focused)
929 {
930 updatenumlockmask();
931 {
932 unsigned int i, j;
933 unsigned int modifiers[] = { 0, LockMask, numlockmask, numlockmask|LockMask };
934 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
935 if (focused) {
936 for (i = 0; i < LENGTH(buttons); i++)
937 if (buttons[i].click == ClkClientWin)
938 for (j = 0; j < LENGTH(modifiers); j++)
939 XGrabButton(dpy, buttons[i].button,
940 buttons[i].mask | modifiers[j],
941 c->win, False, BUTTONMASK,
942 GrabModeAsync, GrabModeSync, None, None);
943 } else
944 XGrabButton(dpy, AnyButton, AnyModifier, c->win, False,
945 BUTTONMASK, GrabModeAsync, GrabModeSync, None, None);
946 }
947 }
948
949 void
950 grabkeys(void)
951 {
952 updatenumlockmask();
953 {
954 unsigned int i, j;
955 unsigned int modifiers[] = { 0, LockMask, numlockmask, numlockmask|LockMask };
956 KeyCode code;
957
958 XUngrabKey(dpy, AnyKey, AnyModifier, root);
959 for (i = 0; i < LENGTH(keys); i++)
960 if ((code = XKeysymToKeycode(dpy, keys[i].keysym)))
961 for (j = 0; j < LENGTH(modifiers); j++)
962 XGrabKey(dpy, code, keys[i].mod | modifiers[j], root,
963 True, GrabModeAsync, GrabModeAsync);
964 }
965 }
966
967 void
968 incnmaster(const Arg *arg)
969 {
970 selmon->nmaster = MAX(selmon->nmaster + arg->i, 0);
971 arrange(selmon);
972 }
973
974 #ifdef XINERAMA
975 static int
976 isuniquegeom(XineramaScreenInfo *unique, size_t n, XineramaScreenInfo *info)
977 {
978 while (n--)
979 if (unique[n].x_org == info->x_org && unique[n].y_org == info->y_org
980 && unique[n].width == info->width && unique[n].height == info->height)
981 return 0;
982 return 1;
983 }
984 #endif /* XINERAMA */
985
986 void
987 keypress(XEvent *e)
988 {
989 unsigned int i;
990 KeySym keysym;
991 XKeyEvent *ev;
992
993 ev = &e->xkey;
994 keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
995 for (i = 0; i < LENGTH(keys); i++)
996 if (keysym == keys[i].keysym
997 && CLEANMASK(keys[i].mod) == CLEANMASK(ev->state)
998 && keys[i].func)
999 keys[i].func(&(keys[i].arg));
1000 }
1001
1002 void
1003 killclient(const Arg *arg)
1004 {
1005 if (!selmon->sel)
1006 return;
1007 if (!sendevent(selmon->sel, wmatom[WMDelete])) {
1008 XGrabServer(dpy);
1009 XSetErrorHandler(xerrordummy);
1010 XSetCloseDownMode(dpy, DestroyAll);
1011 XKillClient(dpy, selmon->sel->win);
1012 XSync(dpy, False);
1013 XSetErrorHandler(xerror);
1014 XUngrabServer(dpy);
1015 }
1016 }
1017
1018 void
1019 manage(Window w, XWindowAttributes *wa)
1020 {
1021 Client *c, *t = NULL;
1022 Window trans = None;
1023 XWindowChanges wc;
1024
1025 c = ecalloc(1, sizeof(Client));
1026 c->win = w;
1027 /* geometry */
1028 c->x = c->oldx = wa->x;
1029 c->y = c->oldy = wa->y;
1030 c->w = c->oldw = wa->width;
1031 c->h = c->oldh = wa->height;
1032 c->oldbw = wa->border_width;
1033
1034 updatetitle(c);
1035 if (XGetTransientForHint(dpy, w, &trans) && (t = wintoclient(trans))) {
1036 c->mon = t->mon;
1037 c->tags = t->tags;
1038 } else {
1039 c->mon = selmon;
1040 applyrules(c);
1041 }
1042
1043 if (c->x + WIDTH(c) > c->mon->mx + c->mon->mw)
1044 c->x = c->mon->mx + c->mon->mw - WIDTH(c);
1045 if (c->y + HEIGHT(c) > c->mon->my + c->mon->mh)
1046 c->y = c->mon->my + c->mon->mh - HEIGHT(c);
1047 c->x = MAX(c->x, c->mon->mx);
1048 /* only fix client y-offset, if the client center might cover the bar */
1049 c->y = MAX(c->y, ((c->mon->by == c->mon->my) && (c->x + (c->w / 2) >= c->mon->wx)
1050 && (c->x + (c->w / 2) < c->mon->wx + c->mon->ww)) ? bh : c->mon->my);
1051 c->bw = borderpx;
1052
1053 wc.border_width = c->bw;
1054 XConfigureWindow(dpy, w, CWBorderWidth, &wc);
1055 XSetWindowBorder(dpy, w, scheme[SchemeNorm][ColBorder].pixel);
1056 configure(c); /* propagates border_width, if size doesn't change */
1057 updatewindowtype(c);
1058 updatesizehints(c);
1059 updatewmhints(c);
1060 XSelectInput(dpy, w, EnterWindowMask|FocusChangeMask|PropertyChangeMask|StructureNotifyMask);
1061 grabbuttons(c, 0);
1062 if (!c->isfloating)
1063 c->isfloating = c->oldstate = trans != None || c->isfixed;
1064 if (c->isfloating)
1065 XRaiseWindow(dpy, c->win);
1066 attach(c);
1067 attachstack(c);
1068 XChangeProperty(dpy, root, netatom[NetClientList], XA_WINDOW, 32, PropModeAppend,
1069 (unsigned char *) &(c->win), 1);
1070 XMoveResizeWindow(dpy, c->win, c->x + 2 * sw, c->y, c->w, c->h); /* some windows require this */
1071 setclientstate(c, NormalState);
1072 if (c->mon == selmon)
1073 unfocus(selmon->sel, 0);
1074 c->mon->sel = c;
1075 arrange(c->mon);
1076 XMapWindow(dpy, c->win);
1077 focus(NULL);
1078 }
1079
1080 void
1081 mappingnotify(XEvent *e)
1082 {
1083 XMappingEvent *ev = &e->xmapping;
1084
1085 XRefreshKeyboardMapping(ev);
1086 if (ev->request == MappingKeyboard)
1087 grabkeys();
1088 }
1089
1090 void
1091 maprequest(XEvent *e)
1092 {
1093 static XWindowAttributes wa;
1094 XMapRequestEvent *ev = &e->xmaprequest;
1095
1096 if (!XGetWindowAttributes(dpy, ev->window, &wa))
1097 return;
1098 if (wa.override_redirect)
1099 return;
1100 if (!wintoclient(ev->window))
1101 manage(ev->window, &wa);
1102 }
1103
1104 void
1105 monocle(Monitor *m)
1106 {
1107 unsigned int n = 0;
1108 Client *c;
1109
1110 for (c = m->clients; c; c = c->next)
1111 if (ISVISIBLE(c))
1112 n++;
1113 if (n > 0) /* override layout symbol */
1114 snprintf(m->ltsymbol, sizeof m->ltsymbol, "[%d]", n);
1115 for (c = nexttiled(m->clients); c; c = nexttiled(c->next))
1116 resize(c, m->wx, m->wy, m->ww - 2 * c->bw, m->wh - 2 * c->bw, 0);
1117 }
1118
1119 void
1120 motionnotify(XEvent *e)
1121 {
1122 static Monitor *mon = NULL;
1123 Monitor *m;
1124 XMotionEvent *ev = &e->xmotion;
1125
1126 if (ev->window != root)
1127 return;
1128 if ((m = recttomon(ev->x_root, ev->y_root, 1, 1)) != mon && mon) {
1129 unfocus(selmon->sel, 1);
1130 selmon = m;
1131 focus(NULL);
1132 }
1133 mon = m;
1134 }
1135
1136 void
1137 movemouse(const Arg *arg)
1138 {
1139 int x, y, ocx, ocy, nx, ny;
1140 Client *c;
1141 Monitor *m;
1142 XEvent ev;
1143 Time lasttime = 0;
1144
1145 if (!(c = selmon->sel))
1146 return;
1147 if (c->isfullscreen) /* no support moving fullscreen windows by mouse */
1148 return;
1149 restack(selmon);
1150 ocx = c->x;
1151 ocy = c->y;
1152 if (XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
1153 None, cursor[CurMove]->cursor, CurrentTime) != GrabSuccess)
1154 return;
1155 if (!getrootptr(&x, &y))
1156 return;
1157 do {
1158 XMaskEvent(dpy, MOUSEMASK|ExposureMask|SubstructureRedirectMask, &ev);
1159 switch(ev.type) {
1160 case ConfigureRequest:
1161 case Expose:
1162 case MapRequest:
1163 handler[ev.type](&ev);
1164 break;
1165 case MotionNotify:
1166 if ((ev.xmotion.time - lasttime) <= (1000 / 60))
1167 continue;
1168 lasttime = ev.xmotion.time;
1169
1170 nx = ocx + (ev.xmotion.x - x);
1171 ny = ocy + (ev.xmotion.y - y);
1172 if (nx >= selmon->wx && nx <= selmon->wx + selmon->ww
1173 && ny >= selmon->wy && ny <= selmon->wy + selmon->wh) {
1174 if (abs(selmon->wx - nx) < snap)
1175 nx = selmon->wx;
1176 else if (abs((selmon->wx + selmon->ww) - (nx + WIDTH(c))) < snap)
1177 nx = selmon->wx + selmon->ww - WIDTH(c);
1178 if (abs(selmon->wy - ny) < snap)
1179 ny = selmon->wy;
1180 else if (abs((selmon->wy + selmon->wh) - (ny + HEIGHT(c))) < snap)
1181 ny = selmon->wy + selmon->wh - HEIGHT(c);
1182 if (!c->isfloating && selmon->lt[selmon->sellt]->arrange
1183 && (abs(nx - c->x) > snap || abs(ny - c->y) > snap))
1184 togglefloating(NULL);
1185 }
1186 if (!selmon->lt[selmon->sellt]->arrange || c->isfloating)
1187 resize(c, nx, ny, c->w, c->h, 1);
1188 break;
1189 }
1190 } while (ev.type != ButtonRelease);
1191 XUngrabPointer(dpy, CurrentTime);
1192 if ((m = recttomon(c->x, c->y, c->w, c->h)) != selmon) {
1193 sendmon(c, m);
1194 selmon = m;
1195 focus(NULL);
1196 }
1197 }
1198
1199 Client *
1200 nexttiled(Client *c)
1201 {
1202 for (; c && (c->isfloating || !ISVISIBLE(c)); c = c->next);
1203 return c;
1204 }
1205
1206 void
1207 pop(Client *c)
1208 {
1209 detach(c);
1210 attach(c);
1211 focus(c);
1212 arrange(c->mon);
1213 }
1214
1215 void
1216 propertynotify(XEvent *e)
1217 {
1218 Client *c;
1219 Window trans;
1220 XPropertyEvent *ev = &e->xproperty;
1221
1222 if ((ev->window == root) && (ev->atom == XA_WM_NAME))
1223 updatestatus();
1224 else if (ev->state == PropertyDelete)
1225 return; /* ignore */
1226 else if ((c = wintoclient(ev->window))) {
1227 switch(ev->atom) {
1228 default: break;
1229 case XA_WM_TRANSIENT_FOR:
1230 if (!c->isfloating && (XGetTransientForHint(dpy, c->win, &trans)) &&
1231 (c->isfloating = (wintoclient(trans)) != NULL))
1232 arrange(c->mon);
1233 break;
1234 case XA_WM_NORMAL_HINTS:
1235 updatesizehints(c);
1236 break;
1237 case XA_WM_HINTS:
1238 updatewmhints(c);
1239 drawbars();
1240 break;
1241 }
1242 if (ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
1243 updatetitle(c);
1244 if (c == c->mon->sel)
1245 drawbar(c->mon);
1246 }
1247 if (ev->atom == netatom[NetWMWindowType])
1248 updatewindowtype(c);
1249 }
1250 }
1251
1252 void
1253 quit(const Arg *arg)
1254 {
1255 running = 0;
1256 }
1257
1258 Monitor *
1259 recttomon(int x, int y, int w, int h)
1260 {
1261 Monitor *m, *r = selmon;
1262 int a, area = 0;
1263
1264 for (m = mons; m; m = m->next)
1265 if ((a = INTERSECT(x, y, w, h, m)) > area) {
1266 area = a;
1267 r = m;
1268 }
1269 return r;
1270 }
1271
1272 void
1273 resize(Client *c, int x, int y, int w, int h, int interact)
1274 {
1275 if (applysizehints(c, &x, &y, &w, &h, interact))
1276 resizeclient(c, x, y, w, h);
1277 }
1278
1279 void
1280 resizeclient(Client *c, int x, int y, int w, int h)
1281 {
1282 XWindowChanges wc;
1283
1284 c->oldx = c->x; c->x = wc.x = x;
1285 c->oldy = c->y; c->y = wc.y = y;
1286 c->oldw = c->w; c->w = wc.width = w;
1287 c->oldh = c->h; c->h = wc.height = h;
1288 wc.border_width = c->bw;
1289 XConfigureWindow(dpy, c->win, CWX|CWY|CWWidth|CWHeight|CWBorderWidth, &wc);
1290 configure(c);
1291 XSync(dpy, False);
1292 }
1293
1294 void
1295 resizemouse(const Arg *arg)
1296 {
1297 int ocx, ocy, nw, nh;
1298 Client *c;
1299 Monitor *m;
1300 XEvent ev;
1301 Time lasttime = 0;
1302
1303 if (!(c = selmon->sel))
1304 return;
1305 if (c->isfullscreen) /* no support resizing fullscreen windows by mouse */
1306 return;
1307 restack(selmon);
1308 ocx = c->x;
1309 ocy = c->y;
1310 if (XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
1311 None, cursor[CurResize]->cursor, CurrentTime) != GrabSuccess)
1312 return;
1313 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->bw - 1, c->h + c->bw - 1);
1314 do {
1315 XMaskEvent(dpy, MOUSEMASK|ExposureMask|SubstructureRedirectMask, &ev);
1316 switch(ev.type) {
1317 case ConfigureRequest:
1318 case Expose:
1319 case MapRequest:
1320 handler[ev.type](&ev);
1321 break;
1322 case MotionNotify:
1323 if ((ev.xmotion.time - lasttime) <= (1000 / 60))
1324 continue;
1325 lasttime = ev.xmotion.time;
1326
1327 nw = MAX(ev.xmotion.x - ocx - 2 * c->bw + 1, 1);
1328 nh = MAX(ev.xmotion.y - ocy - 2 * c->bw + 1, 1);
1329 if (c->mon->wx + nw >= selmon->wx && c->mon->wx + nw <= selmon->wx + selmon->ww
1330 && c->mon->wy + nh >= selmon->wy && c->mon->wy + nh <= selmon->wy + selmon->wh)
1331 {
1332 if (!c->isfloating && selmon->lt[selmon->sellt]->arrange
1333 && (abs(nw - c->w) > snap || abs(nh - c->h) > snap))
1334 togglefloating(NULL);
1335 }
1336 if (!selmon->lt[selmon->sellt]->arrange || c->isfloating)
1337 resize(c, c->x, c->y, nw, nh, 1);
1338 break;
1339 }
1340 } while (ev.type != ButtonRelease);
1341 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->bw - 1, c->h + c->bw - 1);
1342 XUngrabPointer(dpy, CurrentTime);
1343 while (XCheckMaskEvent(dpy, EnterWindowMask, &ev));
1344 if ((m = recttomon(c->x, c->y, c->w, c->h)) != selmon) {
1345 sendmon(c, m);
1346 selmon = m;
1347 focus(NULL);
1348 }
1349 }
1350
1351 void
1352 restack(Monitor *m)
1353 {
1354 Client *c;
1355 XEvent ev;
1356 XWindowChanges wc;
1357
1358 drawbar(m);
1359 if (!m->sel)
1360 return;
1361 if (m->sel->isfloating || !m->lt[m->sellt]->arrange)
1362 XRaiseWindow(dpy, m->sel->win);
1363 if (m->lt[m->sellt]->arrange) {
1364 wc.stack_mode = Below;
1365 wc.sibling = m->barwin;
1366 for (c = m->stack; c; c = c->snext)
1367 if (!c->isfloating && ISVISIBLE(c)) {
1368 XConfigureWindow(dpy, c->win, CWSibling|CWStackMode, &wc);
1369 wc.sibling = c->win;
1370 }
1371 }
1372 XSync(dpy, False);
1373 while (XCheckMaskEvent(dpy, EnterWindowMask, &ev));
1374 }
1375
1376 void
1377 run(void)
1378 {
1379 XEvent ev;
1380 /* main event loop */
1381 XSync(dpy, False);
1382 while (running && !XNextEvent(dpy, &ev))
1383 if (handler[ev.type])
1384 handler[ev.type](&ev); /* call handler */
1385 }
1386
1387 void
1388 scan(void)
1389 {
1390 unsigned int i, num;
1391 Window d1, d2, *wins = NULL;
1392 XWindowAttributes wa;
1393
1394 if (XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
1395 for (i = 0; i < num; i++) {
1396 if (!XGetWindowAttributes(dpy, wins[i], &wa)
1397 || wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
1398 continue;
1399 if (wa.map_state == IsViewable || getstate(wins[i]) == IconicState)
1400 manage(wins[i], &wa);
1401 }
1402 for (i = 0; i < num; i++) { /* now the transients */
1403 if (!XGetWindowAttributes(dpy, wins[i], &wa))
1404 continue;
1405 if (XGetTransientForHint(dpy, wins[i], &d1)
1406 && (wa.map_state == IsViewable || getstate(wins[i]) == IconicState))
1407 manage(wins[i], &wa);
1408 }
1409 if (wins)
1410 XFree(wins);
1411 }
1412 }
1413
1414 void
1415 sendmon(Client *c, Monitor *m)
1416 {
1417 if (c->mon == m)
1418 return;
1419 unfocus(c, 1);
1420 detach(c);
1421 detachstack(c);
1422 c->mon = m;
1423 c->tags = m->tagset[m->seltags]; /* assign tags of target monitor */
1424 attach(c);
1425 attachstack(c);
1426 focus(NULL);
1427 arrange(NULL);
1428 }
1429
1430 void
1431 setclientstate(Client *c, long state)
1432 {
1433 long data[] = { state, None };
1434
1435 XChangeProperty(dpy, c->win, wmatom[WMState], wmatom[WMState], 32,
1436 PropModeReplace, (unsigned char *)data, 2);
1437 }
1438
1439 int
1440 sendevent(Client *c, Atom proto)
1441 {
1442 int n;
1443 Atom *protocols;
1444 int exists = 0;
1445 XEvent ev;
1446
1447 if (XGetWMProtocols(dpy, c->win, &protocols, &n)) {
1448 while (!exists && n--)
1449 exists = protocols[n] == proto;
1450 XFree(protocols);
1451 }
1452 if (exists) {
1453 ev.type = ClientMessage;
1454 ev.xclient.window = c->win;
1455 ev.xclient.message_type = wmatom[WMProtocols];
1456 ev.xclient.format = 32;
1457 ev.xclient.data.l[0] = proto;
1458 ev.xclient.data.l[1] = CurrentTime;
1459 XSendEvent(dpy, c->win, False, NoEventMask, &ev);
1460 }
1461 return exists;
1462 }
1463
1464 void
1465 setfocus(Client *c)
1466 {
1467 if (!c->neverfocus) {
1468 XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
1469 XChangeProperty(dpy, root, netatom[NetActiveWindow],
1470 XA_WINDOW, 32, PropModeReplace,
1471 (unsigned char *) &(c->win), 1);
1472 }
1473 sendevent(c, wmatom[WMTakeFocus]);
1474 }
1475
1476 void
1477 setfullscreen(Client *c, int fullscreen)
1478 {
1479 if (fullscreen && !c->isfullscreen) {
1480 XChangeProperty(dpy, c->win, netatom[NetWMState], XA_ATOM, 32,
1481 PropModeReplace, (unsigned char*)&netatom[NetWMFullscreen], 1);
1482 c->isfullscreen = 1;
1483 c->oldstate = c->isfloating;
1484 c->oldbw = c->bw;
1485 c->bw = 0;
1486 c->isfloating = 1;
1487 resizeclient(c, c->mon->mx, c->mon->my, c->mon->mw, c->mon->mh);
1488 XRaiseWindow(dpy, c->win);
1489 } else if (!fullscreen && c->isfullscreen){
1490 XChangeProperty(dpy, c->win, netatom[NetWMState], XA_ATOM, 32,
1491 PropModeReplace, (unsigned char*)0, 0);
1492 c->isfullscreen = 0;
1493 c->isfloating = c->oldstate;
1494 c->bw = c->oldbw;
1495 c->x = c->oldx;
1496 c->y = c->oldy;
1497 c->w = c->oldw;
1498 c->h = c->oldh;
1499 resizeclient(c, c->x, c->y, c->w, c->h);
1500 arrange(c->mon);
1501 }
1502 }
1503
1504 void
1505 setlayout(const Arg *arg)
1506 {
1507 if (!arg || !arg->v || arg->v != selmon->lt[selmon->sellt])
1508 selmon->sellt ^= 1;
1509 if (arg && arg->v)
1510 selmon->lt[selmon->sellt] = (Layout *)arg->v;
1511 strncpy(selmon->ltsymbol, selmon->lt[selmon->sellt]->symbol, sizeof selmon->ltsymbol);
1512 if (selmon->sel)
1513 arrange(selmon);
1514 else
1515 drawbar(selmon);
1516 }
1517
1518 /* arg > 1.0 will set mfact absolutely */
1519 void
1520 setmfact(const Arg *arg)
1521 {
1522 float f;
1523
1524 if (!arg || !selmon->lt[selmon->sellt]->arrange)
1525 return;
1526 f = arg->f < 1.0 ? arg->f + selmon->mfact : arg->f - 1.0;
1527 if (f < 0.1 || f > 0.9)
1528 return;
1529 selmon->mfact = f;
1530 arrange(selmon);
1531 }
1532
1533 void
1534 setup(void)
1535 {
1536 int i;
1537 XSetWindowAttributes wa;
1538 Atom utf8string;
1539
1540 /* clean up any zombies immediately */
1541 sigchld(0);
1542
1543 /* init screen */
1544 screen = DefaultScreen(dpy);
1545 sw = DisplayWidth(dpy, screen);
1546 sh = DisplayHeight(dpy, screen);
1547 root = RootWindow(dpy, screen);
1548 drw = drw_create(dpy, screen, root, sw, sh);
1549 if (!drw_fontset_create(drw, fonts, LENGTH(fonts)))
1550 die("no fonts could be loaded.");
1551 lrpad = drw->fonts->h;
1552 bh = drw->fonts->h + 2;
1553 updategeom();
1554 /* init atoms */
1555 utf8string = XInternAtom(dpy, "UTF8_STRING", False);
1556 wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
1557 wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
1558 wmatom[WMState] = XInternAtom(dpy, "WM_STATE", False);
1559 wmatom[WMTakeFocus] = XInternAtom(dpy, "WM_TAKE_FOCUS", False);
1560 netatom[NetActiveWindow] = XInternAtom(dpy, "_NET_ACTIVE_WINDOW", False);
1561 netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
1562 netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
1563 netatom[NetWMState] = XInternAtom(dpy, "_NET_WM_STATE", False);
1564 netatom[NetWMCheck] = XInternAtom(dpy, "_NET_SUPPORTING_WM_CHECK", False);
1565 netatom[NetWMFullscreen] = XInternAtom(dpy, "_NET_WM_STATE_FULLSCREEN", False);
1566 netatom[NetWMWindowType] = XInternAtom(dpy, "_NET_WM_WINDOW_TYPE", False);
1567 netatom[NetWMWindowTypeDialog] = XInternAtom(dpy, "_NET_WM_WINDOW_TYPE_DIALOG", False);
1568 netatom[NetClientList] = XInternAtom(dpy, "_NET_CLIENT_LIST", False);
1569 /* init cursors */
1570 cursor[CurNormal] = drw_cur_create(drw, XC_left_ptr);
1571 cursor[CurResize] = drw_cur_create(drw, XC_sizing);
1572 cursor[CurMove] = drw_cur_create(drw, XC_fleur);
1573 /* init appearance */
1574 scheme = ecalloc(LENGTH(colors), sizeof(Scm));
1575 for (i = 0; i < LENGTH(colors); i++)
1576 scheme[i] = drw_scm_create(drw, colors[i], 3);
1577 /* init bars */
1578 updatebars();
1579 updatestatus();
1580 /* supporting window for NetWMCheck */
1581 wmcheckwin = XCreateSimpleWindow(dpy, root, 0, 0, 1, 1, 0, 0, 0);
1582 XChangeProperty(dpy, wmcheckwin, netatom[NetWMCheck], XA_WINDOW, 32,
1583 PropModeReplace, (unsigned char *) &wmcheckwin, 1);
1584 XChangeProperty(dpy, wmcheckwin, netatom[NetWMName], utf8string, 8,
1585 PropModeReplace, (unsigned char *) "dwm", 4);
1586 XChangeProperty(dpy, root, netatom[NetWMCheck], XA_WINDOW, 32,
1587 PropModeReplace, (unsigned char *) &wmcheckwin, 1);
1588 /* EWMH support per view */
1589 XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
1590 PropModeReplace, (unsigned char *) netatom, NetLast);
1591 XDeleteProperty(dpy, root, netatom[NetClientList]);
1592 /* select events */
1593 wa.cursor = cursor[CurNormal]->cursor;
1594 wa.event_mask = SubstructureRedirectMask|SubstructureNotifyMask
1595 |ButtonPressMask|PointerMotionMask|EnterWindowMask
1596 |LeaveWindowMask|StructureNotifyMask|PropertyChangeMask;
1597 XChangeWindowAttributes(dpy, root, CWEventMask|CWCursor, &wa);
1598 XSelectInput(dpy, root, wa.event_mask);
1599 grabkeys();
1600 focus(NULL);
1601 }
1602
1603
1604 void
1605 seturgent(Client *c, int urg)
1606 {
1607 XWMHints *wmh;
1608
1609 c->isurgent = urg;
1610 if (!(wmh = XGetWMHints(dpy, c->win)))
1611 return;
1612 wmh->flags = urg ? (wmh->flags | XUrgencyHint) : (wmh->flags & ~XUrgencyHint);
1613 XSetWMHints(dpy, c->win, wmh);
1614 XFree(wmh);
1615 }
1616
1617 void
1618 showhide(Client *c)
1619 {
1620 if (!c)
1621 return;
1622 if (ISVISIBLE(c)) {
1623 /* show clients top down */
1624 XMoveWindow(dpy, c->win, c->x, c->y);
1625 if ((!c->mon->lt[c->mon->sellt]->arrange || c->isfloating) && !c->isfullscreen)
1626 resize(c, c->x, c->y, c->w, c->h, 0);
1627 showhide(c->snext);
1628 } else {
1629 /* hide clients bottom up */
1630 showhide(c->snext);
1631 XMoveWindow(dpy, c->win, WIDTH(c) * -2, c->y);
1632 }
1633 }
1634
1635 void
1636 sigchld(int unused)
1637 {
1638 if (signal(SIGCHLD, sigchld) == SIG_ERR)
1639 die("can't install SIGCHLD handler:");
1640 while (0 < waitpid(-1, NULL, WNOHANG));
1641 }
1642
1643 void
1644 spawn(const Arg *arg)
1645 {
1646 if (arg->v == dmenucmd)
1647 dmenumon[0] = '0' + selmon->num;
1648 if (fork() == 0) {
1649 if (dpy)
1650 close(ConnectionNumber(dpy));
1651 setsid();
1652 execvp(((char **)arg->v)[0], (char **)arg->v);
1653 fprintf(stderr, "dwm: execvp %s", ((char **)arg->v)[0]);
1654 perror(" failed");
1655 exit(EXIT_SUCCESS);
1656 }
1657 }
1658
1659 void
1660 tag(const Arg *arg)
1661 {
1662 if (selmon->sel && arg->ui & TAGMASK) {
1663 selmon->sel->tags = arg->ui & TAGMASK;
1664 focus(NULL);
1665 arrange(selmon);
1666 }
1667 }
1668
1669 void
1670 tagmon(const Arg *arg)
1671 {
1672 if (!selmon->sel || !mons->next)
1673 return;
1674 sendmon(selmon->sel, dirtomon(arg->i));
1675 }
1676
1677 void
1678 tile(Monitor *m)
1679 {
1680 unsigned int i, n, h, mw, my, ty;
1681 Client *c;
1682
1683 for (n = 0, c = nexttiled(m->clients); c; c = nexttiled(c->next), n++);
1684 if (n == 0)
1685 return;
1686
1687 if (n > m->nmaster)
1688 mw = m->nmaster ? m->ww * m->mfact : 0;
1689 else
1690 mw = m->ww;
1691 for (i = my = ty = 0, c = nexttiled(m->clients); c; c = nexttiled(c->next), i++)
1692 if (i < m->nmaster) {
1693 h = (m->wh - my) / (MIN(n, m->nmaster) - i);
1694 resize(c, m->wx, m->wy + my, mw - (2*c->bw), h - (2*c->bw), 0);
1695 my += HEIGHT(c);
1696 } else {
1697 h = (m->wh - ty) / (n - i);
1698 resize(c, m->wx + mw, m->wy + ty, m->ww - mw - (2*c->bw), h - (2*c->bw), 0);
1699 ty += HEIGHT(c);
1700 }
1701 }
1702
1703 void
1704 togglebar(const Arg *arg)
1705 {
1706 selmon->showbar = !selmon->showbar;
1707 updatebarpos(selmon);
1708 XMoveResizeWindow(dpy, selmon->barwin, selmon->wx, selmon->by, selmon->ww, bh);
1709 arrange(selmon);
1710 }
1711
1712 void
1713 togglefloating(const Arg *arg)
1714 {
1715 if (!selmon->sel)
1716 return;
1717 if (selmon->sel->isfullscreen) /* no support for fullscreen windows */
1718 return;
1719 selmon->sel->isfloating = !selmon->sel->isfloating || selmon->sel->isfixed;
1720 if (selmon->sel->isfloating)
1721 resize(selmon->sel, selmon->sel->x, selmon->sel->y,
1722 selmon->sel->w, selmon->sel->h, 0);
1723 arrange(selmon);
1724 }
1725
1726 void
1727 toggletag(const Arg *arg)
1728 {
1729 unsigned int newtags;
1730
1731 if (!selmon->sel)
1732 return;
1733 newtags = selmon->sel->tags ^ (arg->ui & TAGMASK);
1734 if (newtags) {
1735 selmon->sel->tags = newtags;
1736 focus(NULL);
1737 arrange(selmon);
1738 }
1739 }
1740
1741 void
1742 toggleview(const Arg *arg)
1743 {
1744 unsigned int newtagset = selmon->tagset[selmon->seltags] ^ (arg->ui & TAGMASK);
1745
1746 if (newtagset) {
1747 selmon->tagset[selmon->seltags] = newtagset;
1748 focus(NULL);
1749 arrange(selmon);
1750 }
1751 }
1752
1753 void
1754 unfocus(Client *c, int setfocus)
1755 {
1756 if (!c)
1757 return;
1758 grabbuttons(c, 0);
1759 XSetWindowBorder(dpy, c->win, scheme[SchemeNorm][ColBorder].pixel);
1760 if (setfocus) {
1761 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
1762 XDeleteProperty(dpy, root, netatom[NetActiveWindow]);
1763 }
1764 }
1765
1766 void
1767 unmanage(Client *c, int destroyed)
1768 {
1769 Monitor *m = c->mon;
1770 XWindowChanges wc;
1771
1772 detach(c);
1773 detachstack(c);
1774 if (!destroyed) {
1775 wc.border_width = c->oldbw;
1776 XGrabServer(dpy); /* avoid race conditions */
1777 XSetErrorHandler(xerrordummy);
1778 XConfigureWindow(dpy, c->win, CWBorderWidth, &wc); /* restore border */
1779 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
1780 setclientstate(c, WithdrawnState);
1781 XSync(dpy, False);
1782 XSetErrorHandler(xerror);
1783 XUngrabServer(dpy);
1784 }
1785 free(c);
1786 focus(NULL);
1787 updateclientlist();
1788 arrange(m);
1789 }
1790
1791 void
1792 unmapnotify(XEvent *e)
1793 {
1794 Client *c;
1795 XUnmapEvent *ev = &e->xunmap;
1796
1797 if ((c = wintoclient(ev->window))) {
1798 if (ev->send_event)
1799 setclientstate(c, WithdrawnState);
1800 else
1801 unmanage(c, 0);
1802 }
1803 }
1804
1805 void
1806 updatebars(void)
1807 {
1808 Monitor *m;
1809 XSetWindowAttributes wa = {
1810 .override_redirect = True,
1811 .background_pixmap = ParentRelative,
1812 .event_mask = ButtonPressMask|ExposureMask
1813 };
1814 for (m = mons; m; m = m->next) {
1815 if (m->barwin)
1816 continue;
1817 m->barwin = XCreateWindow(dpy, root, m->wx, m->by, m->ww, bh, 0, DefaultDepth(dpy, screen),
1818 CopyFromParent, DefaultVisual(dpy, screen),
1819 CWOverrideRedirect|CWBackPixmap|CWEventMask, &wa);
1820 XDefineCursor(dpy, m->barwin, cursor[CurNormal]->cursor);
1821 XMapRaised(dpy, m->barwin);
1822 }
1823 }
1824
1825 void
1826 updatebarpos(Monitor *m)
1827 {
1828 m->wy = m->my;
1829 m->wh = m->mh;
1830 if (m->showbar) {
1831 m->wh -= bh;
1832 m->by = m->topbar ? m->wy : m->wy + m->wh;
1833 m->wy = m->topbar ? m->wy + bh : m->wy;
1834 } else
1835 m->by = -bh;
1836 }
1837
1838 void
1839 updateclientlist()
1840 {
1841 Client *c;
1842 Monitor *m;
1843
1844 XDeleteProperty(dpy, root, netatom[NetClientList]);
1845 for (m = mons; m; m = m->next)
1846 for (c = m->clients; c; c = c->next)
1847 XChangeProperty(dpy, root, netatom[NetClientList],
1848 XA_WINDOW, 32, PropModeAppend,
1849 (unsigned char *) &(c->win), 1);
1850 }
1851
1852 int
1853 updategeom(void)
1854 {
1855 int dirty = 0;
1856
1857 #ifdef XINERAMA
1858 if (XineramaIsActive(dpy)) {
1859 int i, j, n, nn;
1860 Client *c;
1861 Monitor *m;
1862 XineramaScreenInfo *info = XineramaQueryScreens(dpy, &nn);
1863 XineramaScreenInfo *unique = NULL;
1864
1865 for (n = 0, m = mons; m; m = m->next, n++);
1866 /* only consider unique geometries as separate screens */
1867 unique = ecalloc(nn, sizeof(XineramaScreenInfo));
1868 for (i = 0, j = 0; i < nn; i++)
1869 if (isuniquegeom(unique, j, &info[i]))
1870 memcpy(&unique[j++], &info[i], sizeof(XineramaScreenInfo));
1871 XFree(info);
1872 nn = j;
1873 if (n <= nn) { /* new monitors available */
1874 for (i = 0; i < (nn - n); i++) {
1875 for (m = mons; m && m->next; m = m->next);
1876 if (m)
1877 m->next = createmon();
1878 else
1879 mons = createmon();
1880 }
1881 for (i = 0, m = mons; i < nn && m; m = m->next, i++)
1882 if (i >= n
1883 || unique[i].x_org != m->mx || unique[i].y_org != m->my
1884 || unique[i].width != m->mw || unique[i].height != m->mh)
1885 {
1886 dirty = 1;
1887 m->num = i;
1888 m->mx = m->wx = unique[i].x_org;
1889 m->my = m->wy = unique[i].y_org;
1890 m->mw = m->ww = unique[i].width;
1891 m->mh = m->wh = unique[i].height;
1892 updatebarpos(m);
1893 }
1894 } else { /* less monitors available nn < n */
1895 for (i = nn; i < n; i++) {
1896 for (m = mons; m && m->next; m = m->next);
1897 while ((c = m->clients)) {
1898 dirty = 1;
1899 m->clients = c->next;
1900 detachstack(c);
1901 c->mon = mons;
1902 attach(c);
1903 attachstack(c);
1904 }
1905 if (m == selmon)
1906 selmon = mons;
1907 cleanupmon(m);
1908 }
1909 }
1910 free(unique);
1911 } else
1912 #endif /* XINERAMA */
1913 { /* default monitor setup */
1914 if (!mons)
1915 mons = createmon();
1916 if (mons->mw != sw || mons->mh != sh) {
1917 dirty = 1;
1918 mons->mw = mons->ww = sw;
1919 mons->mh = mons->wh = sh;
1920 updatebarpos(mons);
1921 }
1922 }
1923 if (dirty) {
1924 selmon = mons;
1925 selmon = wintomon(root);
1926 }
1927 return dirty;
1928 }
1929
1930 void
1931 updatenumlockmask(void)
1932 {
1933 unsigned int i, j;
1934 XModifierKeymap *modmap;
1935
1936 numlockmask = 0;
1937 modmap = XGetModifierMapping(dpy);
1938 for (i = 0; i < 8; i++)
1939 for (j = 0; j < modmap->max_keypermod; j++)
1940 if (modmap->modifiermap[i * modmap->max_keypermod + j]
1941 == XKeysymToKeycode(dpy, XK_Num_Lock))
1942 numlockmask = (1 << i);
1943 XFreeModifiermap(modmap);
1944 }
1945
1946 void
1947 updatesizehints(Client *c)
1948 {
1949 long msize;
1950 XSizeHints size;
1951
1952 if (!XGetWMNormalHints(dpy, c->win, &size, &msize))
1953 /* size is uninitialized, ensure that size.flags aren't used */
1954 size.flags = PSize;
1955 if (size.flags & PBaseSize) {
1956 c->basew = size.base_width;
1957 c->baseh = size.base_height;
1958 } else if (size.flags & PMinSize) {
1959 c->basew = size.min_width;
1960 c->baseh = size.min_height;
1961 } else
1962 c->basew = c->baseh = 0;
1963 if (size.flags & PResizeInc) {
1964 c->incw = size.width_inc;
1965 c->inch = size.height_inc;
1966 } else
1967 c->incw = c->inch = 0;
1968 if (size.flags & PMaxSize) {
1969 c->maxw = size.max_width;
1970 c->maxh = size.max_height;
1971 } else
1972 c->maxw = c->maxh = 0;
1973 if (size.flags & PMinSize) {
1974 c->minw = size.min_width;
1975 c->minh = size.min_height;
1976 } else if (size.flags & PBaseSize) {
1977 c->minw = size.base_width;
1978 c->minh = size.base_height;
1979 } else
1980 c->minw = c->minh = 0;
1981 if (size.flags & PAspect) {
1982 c->mina = (float)size.min_aspect.y / size.min_aspect.x;
1983 c->maxa = (float)size.max_aspect.x / size.max_aspect.y;
1984 } else
1985 c->maxa = c->mina = 0.0;
1986 c->isfixed = (c->maxw && c->minw && c->maxh && c->minh
1987 && c->maxw == c->minw && c->maxh == c->minh);
1988 }
1989
1990 void
1991 updatetitle(Client *c)
1992 {
1993 if (!gettextprop(c->win, netatom[NetWMName], c->name, sizeof c->name))
1994 gettextprop(c->win, XA_WM_NAME, c->name, sizeof c->name);
1995 if (c->name[0] == '\0') /* hack to mark broken clients */
1996 strcpy(c->name, broken);
1997 }
1998
1999 void
2000 updatestatus(void)
2001 {
2002 if (!gettextprop(root, XA_WM_NAME, stext, sizeof(stext)))
2003 strcpy(stext, "dwm-"VERSION);
2004 drawbar(selmon);
2005 }
2006
2007 void
2008 updatewindowtype(Client *c)
2009 {
2010 Atom state = getatomprop(c, netatom[NetWMState]);
2011 Atom wtype = getatomprop(c, netatom[NetWMWindowType]);
2012
2013 if (state == netatom[NetWMFullscreen])
2014 setfullscreen(c, 1);
2015 if (wtype == netatom[NetWMWindowTypeDialog])
2016 c->isfloating = 1;
2017 }
2018
2019 void
2020 updatewmhints(Client *c)
2021 {
2022 XWMHints *wmh;
2023
2024 if ((wmh = XGetWMHints(dpy, c->win))) {
2025 if (c == selmon->sel && wmh->flags & XUrgencyHint) {
2026 wmh->flags &= ~XUrgencyHint;
2027 XSetWMHints(dpy, c->win, wmh);
2028 } else
2029 c->isurgent = (wmh->flags & XUrgencyHint) ? 1 : 0;
2030 if (wmh->flags & InputHint)
2031 c->neverfocus = !wmh->input;
2032 else
2033 c->neverfocus = 0;
2034 XFree(wmh);
2035 }
2036 }
2037
2038 void
2039 view(const Arg *arg)
2040 {
2041 if ((arg->ui & TAGMASK) == selmon->tagset[selmon->seltags])
2042 return;
2043 selmon->seltags ^= 1; /* toggle sel tagset */
2044 if (arg->ui & TAGMASK)
2045 selmon->tagset[selmon->seltags] = arg->ui & TAGMASK;
2046 focus(NULL);
2047 arrange(selmon);
2048 }
2049
2050 Client *
2051 wintoclient(Window w)
2052 {
2053 Client *c;
2054 Monitor *m;
2055
2056 for (m = mons; m; m = m->next)
2057 for (c = m->clients; c; c = c->next)
2058 if (c->win == w)
2059 return c;
2060 return NULL;
2061 }
2062
2063 Monitor *
2064 wintomon(Window w)
2065 {
2066 int x, y;
2067 Client *c;
2068 Monitor *m;
2069
2070 if (w == root && getrootptr(&x, &y))
2071 return recttomon(x, y, 1, 1);
2072 for (m = mons; m; m = m->next)
2073 if (w == m->barwin)
2074 return m;
2075 if ((c = wintoclient(w)))
2076 return c->mon;
2077 return selmon;
2078 }
2079
2080 /* There's no way to check accesses to destroyed windows, thus those cases are
2081 * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
2082 * default error handler, which may call exit. */
2083 int
2084 xerror(Display *dpy, XErrorEvent *ee)
2085 {
2086 if (ee->error_code == BadWindow
2087 || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
2088 || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
2089 || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
2090 || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
2091 || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
2092 || (ee->request_code == X_GrabButton && ee->error_code == BadAccess)
2093 || (ee->request_code == X_GrabKey && ee->error_code == BadAccess)
2094 || (ee->request_code == X_CopyArea && ee->error_code == BadDrawable))
2095 return 0;
2096 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
2097 ee->request_code, ee->error_code);
2098 return xerrorxlib(dpy, ee); /* may call exit */
2099 }
2100
2101 int
2102 xerrordummy(Display *dpy, XErrorEvent *ee)
2103 {
2104 return 0;
2105 }
2106
2107 /* Startup Error handler to check if another window manager
2108 * is already running. */
2109 int
2110 xerrorstart(Display *dpy, XErrorEvent *ee)
2111 {
2112 die("dwm: another window manager is already running");
2113 return -1;
2114 }
2115
2116 void
2117 zoom(const Arg *arg)
2118 {
2119 Client *c = selmon->sel;
2120
2121 if (!selmon->lt[selmon->sellt]->arrange
2122 || (selmon->sel && selmon->sel->isfloating))
2123 return;
2124 if (c == nexttiled(selmon->clients))
2125 if (!c || !(c = nexttiled(c->next)))
2126 return;
2127 pop(c);
2128 }
2129
2130 int
2131 main(int argc, char *argv[])
2132 {
2133 if (argc == 2 && !strcmp("-v", argv[1]))
2134 die("dwm-"VERSION);
2135 else if (argc != 1)
2136 die("usage: dwm [-v]");
2137 if (!setlocale(LC_CTYPE, "") || !XSupportsLocale())
2138 fputs("warning: no locale support\n", stderr);
2139 if (!(dpy = XOpenDisplay(NULL)))
2140 die("dwm: cannot open display");
2141 checkotherwm();
2142 setup();
2143 scan();
2144 run();
2145 cleanup();
2146 XCloseDisplay(dpy);
2147 return EXIT_SUCCESS;
2148 }