Xinqi Bao's Git

projects / dwm.git / blob


47823432bfe5effed3b251b2f94e12cc2aa979ca
[dwm.git] / dwm.c
1 /* See LICENSE file for copyright and license details.
2 *
3 * dynamic window manager is designed like any other X client as well. It is
4 * driven through handling X events. In contrast to other X clients, a window
5 * manager selects for SubstructureRedirectMask on the root window, to receive
6 * events about window (dis-)appearance. Only one X connection at a time is
7 * allowed to select for this event mask.
8 *
9 * The event handlers of dwm are organized in an array which is accessed
10 * whenever a new event has been fetched. This allows event dispatching
11 * in O(1) time.
12 *
13 * Each child of the root window is called a client, except windows which have
14 * set the override_redirect flag. Clients are organized in a linked client
15 * list on each monitor, the focus history is remembered through a stack list
16 * on each monitor. Each client contains a bit array to indicate the tags of a
17 * client.
18 *
19 * Keys and tagging rules are organized as arrays and defined in config.h.
20 *
21 * To understand everything else, start reading main().
22 */
23 #include <errno.h>
24 #include <locale.h>
25 #include <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 restack(selmon);
450 XAllowEvents(dpy, ReplayPointer, CurrentTime);
451 click = ClkClientWin;
452 }
453 for (i = 0; i < LENGTH(buttons); i++)
454 if (click == buttons[i].click && buttons[i].func && buttons[i].button == ev->button
455 && CLEANMASK(buttons[i].mask) == CLEANMASK(ev->state))
456 buttons[i].func(click == ClkTagBar && buttons[i].arg.i == 0 ? &arg : &buttons[i].arg);
457 }
458
459 void
460 checkotherwm(void)
461 {
462 xerrorxlib = XSetErrorHandler(xerrorstart);
463 /* this causes an error if some other window manager is running */
464 XSelectInput(dpy, DefaultRootWindow(dpy), SubstructureRedirectMask);
465 XSync(dpy, False);
466 XSetErrorHandler(xerror);
467 XSync(dpy, False);
468 }
469
470 void
471 cleanup(void)
472 {
473 Arg a = {.ui = ~0};
474 Layout foo = { "", NULL };
475 Monitor *m;
476 size_t i;
477
478 view(&a);
479 selmon->lt[selmon->sellt] = &foo;
480 for (m = mons; m; m = m->next)
481 while (m->stack)
482 unmanage(m->stack, 0);
483 XUngrabKey(dpy, AnyKey, AnyModifier, root);
484 while (mons)
485 cleanupmon(mons);
486 for (i = 0; i < CurLast; i++)
487 drw_cur_free(drw, cursor[i]);
488 for (i = 0; i < LENGTH(colors); i++)
489 free(scheme[i]);
490 XDestroyWindow(dpy, wmcheckwin);
491 drw_free(drw);
492 XSync(dpy, False);
493 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
494 XDeleteProperty(dpy, root, netatom[NetActiveWindow]);
495 }
496
497 void
498 cleanupmon(Monitor *mon)
499 {
500 Monitor *m;
501
502 if (mon == mons)
503 mons = mons->next;
504 else {
505 for (m = mons; m && m->next != mon; m = m->next);
506 m->next = mon->next;
507 }
508 XUnmapWindow(dpy, mon->barwin);
509 XDestroyWindow(dpy, mon->barwin);
510 free(mon);
511 }
512
513 void
514 clientmessage(XEvent *e)
515 {
516 XClientMessageEvent *cme = &e->xclient;
517 Client *c = wintoclient(cme->window);
518
519 if (!c)
520 return;
521 if (cme->message_type == netatom[NetWMState]) {
522 if (cme->data.l[1] == netatom[NetWMFullscreen]
523 || cme->data.l[2] == netatom[NetWMFullscreen])
524 setfullscreen(c, (cme->data.l[0] == 1 /* _NET_WM_STATE_ADD */
525 || (cme->data.l[0] == 2 /* _NET_WM_STATE_TOGGLE */ && !c->isfullscreen)));
526 } else if (cme->message_type == netatom[NetActiveWindow]) {
527 if (c != selmon->sel && !c->isurgent)
528 seturgent(c, 1);
529 }
530 }
531
532 void
533 configure(Client *c)
534 {
535 XConfigureEvent ce;
536
537 ce.type = ConfigureNotify;
538 ce.display = dpy;
539 ce.event = c->win;
540 ce.window = c->win;
541 ce.x = c->x;
542 ce.y = c->y;
543 ce.width = c->w;
544 ce.height = c->h;
545 ce.border_width = c->bw;
546 ce.above = None;
547 ce.override_redirect = False;
548 XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&ce);
549 }
550
551 void
552 configurenotify(XEvent *e)
553 {
554 Monitor *m;
555 Client *c;
556 XConfigureEvent *ev = &e->xconfigure;
557 int dirty;
558
559 /* TODO: updategeom handling sucks, needs to be simplified */
560 if (ev->window == root) {
561 dirty = (sw != ev->width || sh != ev->height);
562 sw = ev->width;
563 sh = ev->height;
564 if (updategeom() || dirty) {
565 drw_resize(drw, sw, bh);
566 updatebars();
567 for (m = mons; m; m = m->next) {
568 for (c = m->clients; c; c = c->next)
569 if (c->isfullscreen)
570 resizeclient(c, m->mx, m->my, m->mw, m->mh);
571 XMoveResizeWindow(dpy, m->barwin, m->wx, m->by, m->ww, bh);
572 }
573 focus(NULL);
574 arrange(NULL);
575 }
576 }
577 }
578
579 void
580 configurerequest(XEvent *e)
581 {
582 Client *c;
583 Monitor *m;
584 XConfigureRequestEvent *ev = &e->xconfigurerequest;
585 XWindowChanges wc;
586
587 if ((c = wintoclient(ev->window))) {
588 if (ev->value_mask & CWBorderWidth)
589 c->bw = ev->border_width;
590 else if (c->isfloating || !selmon->lt[selmon->sellt]->arrange) {
591 m = c->mon;
592 if (ev->value_mask & CWX) {
593 c->oldx = c->x;
594 c->x = m->mx + ev->x;
595 }
596 if (ev->value_mask & CWY) {
597 c->oldy = c->y;
598 c->y = m->my + ev->y;
599 }
600 if (ev->value_mask & CWWidth) {
601 c->oldw = c->w;
602 c->w = ev->width;
603 }
604 if (ev->value_mask & CWHeight) {
605 c->oldh = c->h;
606 c->h = ev->height;
607 }
608 if ((c->x + c->w) > m->mx + m->mw && c->isfloating)
609 c->x = m->mx + (m->mw / 2 - WIDTH(c) / 2); /* center in x direction */
610 if ((c->y + c->h) > m->my + m->mh && c->isfloating)
611 c->y = m->my + (m->mh / 2 - HEIGHT(c) / 2); /* center in y direction */
612 if ((ev->value_mask & (CWX|CWY)) && !(ev->value_mask & (CWWidth|CWHeight)))
613 configure(c);
614 if (ISVISIBLE(c))
615 XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
616 } else
617 configure(c);
618 } else {
619 wc.x = ev->x;
620 wc.y = ev->y;
621 wc.width = ev->width;
622 wc.height = ev->height;
623 wc.border_width = ev->border_width;
624 wc.sibling = ev->above;
625 wc.stack_mode = ev->detail;
626 XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
627 }
628 XSync(dpy, False);
629 }
630
631 Monitor *
632 createmon(void)
633 {
634 Monitor *m;
635
636 m = ecalloc(1, sizeof(Monitor));
637 m->tagset[0] = m->tagset[1] = 1;
638 m->mfact = mfact;
639 m->nmaster = nmaster;
640 m->showbar = showbar;
641 m->topbar = topbar;
642 m->lt[0] = &layouts[0];
643 m->lt[1] = &layouts[1 % LENGTH(layouts)];
644 strncpy(m->ltsymbol, layouts[0].symbol, sizeof m->ltsymbol);
645 return m;
646 }
647
648 void
649 destroynotify(XEvent *e)
650 {
651 Client *c;
652 XDestroyWindowEvent *ev = &e->xdestroywindow;
653
654 if ((c = wintoclient(ev->window)))
655 unmanage(c, 1);
656 }
657
658 void
659 detach(Client *c)
660 {
661 Client **tc;
662
663 for (tc = &c->mon->clients; *tc && *tc != c; tc = &(*tc)->next);
664 *tc = c->next;
665 }
666
667 void
668 detachstack(Client *c)
669 {
670 Client **tc, *t;
671
672 for (tc = &c->mon->stack; *tc && *tc != c; tc = &(*tc)->snext);
673 *tc = c->snext;
674
675 if (c == c->mon->sel) {
676 for (t = c->mon->stack; t && !ISVISIBLE(t); t = t->snext);
677 c->mon->sel = t;
678 }
679 }
680
681 Monitor *
682 dirtomon(int dir)
683 {
684 Monitor *m = NULL;
685
686 if (dir > 0) {
687 if (!(m = selmon->next))
688 m = mons;
689 } else if (selmon == mons)
690 for (m = mons; m->next; m = m->next);
691 else
692 for (m = mons; m->next != selmon; m = m->next);
693 return m;
694 }
695
696 void
697 drawbar(Monitor *m)
698 {
699 int x, w, sw = 0;
700 int boxs = drw->fonts->h / 9;
701 int boxw = drw->fonts->h / 6 + 2;
702 unsigned int i, occ = 0, urg = 0;
703 Client *c;
704
705 /* draw status first so it can be overdrawn by tags later */
706 if (m == selmon) { /* status is only drawn on selected monitor */
707 drw_setscheme(drw, scheme[SchemeNorm]);
708 sw = TEXTW(stext) - lrpad + 2; /* 2px right padding */
709 drw_text(drw, m->ww - sw, 0, sw, bh, 0, stext, 0);
710 }
711
712 for (c = m->clients; c; c = c->next) {
713 occ |= c->tags;
714 if (c->isurgent)
715 urg |= c->tags;
716 }
717 x = 0;
718 for (i = 0; i < LENGTH(tags); i++) {
719 w = TEXTW(tags[i]);
720 drw_setscheme(drw, scheme[m->tagset[m->seltags] & 1 << i ? SchemeSel : SchemeNorm]);
721 drw_text(drw, x, 0, w, bh, lrpad / 2, tags[i], urg & 1 << i);
722 if (occ & 1 << i)
723 drw_rect(drw, x + boxs, boxs, boxw, boxw,
724 m == selmon && selmon->sel && selmon->sel->tags & 1 << i,
725 urg & 1 << i);
726 x += w;
727 }
728 w = blw = TEXTW(m->ltsymbol);
729 drw_setscheme(drw, scheme[SchemeNorm]);
730 x = drw_text(drw, x, 0, w, bh, lrpad / 2, m->ltsymbol, 0);
731
732 if ((w = m->ww - sw - x) > bh) {
733 if (m->sel) {
734 drw_setscheme(drw, scheme[m == selmon ? SchemeSel : SchemeNorm]);
735 drw_text(drw, x, 0, w, bh, lrpad / 2, m->sel->name, 0);
736 if (m->sel->isfloating)
737 drw_rect(drw, x + boxs, boxs, boxw, boxw, m->sel->isfixed, 0);
738 } else {
739 drw_setscheme(drw, scheme[SchemeNorm]);
740 drw_rect(drw, x, 0, w, bh, 1, 1);
741 }
742 }
743 drw_map(drw, m->barwin, 0, 0, m->ww, bh);
744 }
745
746 void
747 drawbars(void)
748 {
749 Monitor *m;
750
751 for (m = mons; m; m = m->next)
752 drawbar(m);
753 }
754
755 void
756 enternotify(XEvent *e)
757 {
758 Client *c;
759 Monitor *m;
760 XCrossingEvent *ev = &e->xcrossing;
761
762 if ((ev->mode != NotifyNormal || ev->detail == NotifyInferior) && ev->window != root)
763 return;
764 c = wintoclient(ev->window);
765 m = c ? c->mon : wintomon(ev->window);
766 if (m != selmon) {
767 unfocus(selmon->sel, 1);
768 selmon = m;
769 } else if (!c || c == selmon->sel)
770 return;
771 focus(c);
772 }
773
774 void
775 expose(XEvent *e)
776 {
777 Monitor *m;
778 XExposeEvent *ev = &e->xexpose;
779
780 if (ev->count == 0 && (m = wintomon(ev->window)))
781 drawbar(m);
782 }
783
784 void
785 focus(Client *c)
786 {
787 if (!c || !ISVISIBLE(c))
788 for (c = selmon->stack; c && !ISVISIBLE(c); c = c->snext);
789 if (selmon->sel && selmon->sel != c)
790 unfocus(selmon->sel, 0);
791 if (c) {
792 if (c->mon != selmon)
793 selmon = c->mon;
794 if (c->isurgent)
795 seturgent(c, 0);
796 detachstack(c);
797 attachstack(c);
798 grabbuttons(c, 1);
799 XSetWindowBorder(dpy, c->win, scheme[SchemeSel][ColBorder].pixel);
800 setfocus(c);
801 } else {
802 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
803 XDeleteProperty(dpy, root, netatom[NetActiveWindow]);
804 }
805 selmon->sel = c;
806 drawbars();
807 }
808
809 /* there are some broken focus acquiring clients needing extra handling */
810 void
811 focusin(XEvent *e)
812 {
813 XFocusChangeEvent *ev = &e->xfocus;
814
815 if (selmon->sel && ev->window != selmon->sel->win)
816 setfocus(selmon->sel);
817 }
818
819 void
820 focusmon(const Arg *arg)
821 {
822 Monitor *m;
823
824 if (!mons->next)
825 return;
826 if ((m = dirtomon(arg->i)) == selmon)
827 return;
828 unfocus(selmon->sel, 0);
829 selmon = m;
830 focus(NULL);
831 }
832
833 void
834 focusstack(const Arg *arg)
835 {
836 Client *c = NULL, *i;
837
838 if (!selmon->sel)
839 return;
840 if (arg->i > 0) {
841 for (c = selmon->sel->next; c && !ISVISIBLE(c); c = c->next);
842 if (!c)
843 for (c = selmon->clients; c && !ISVISIBLE(c); c = c->next);
844 } else {
845 for (i = selmon->clients; i != selmon->sel; i = i->next)
846 if (ISVISIBLE(i))
847 c = i;
848 if (!c)
849 for (; i; i = i->next)
850 if (ISVISIBLE(i))
851 c = i;
852 }
853 if (c) {
854 focus(c);
855 restack(selmon);
856 }
857 }
858
859 Atom
860 getatomprop(Client *c, Atom prop)
861 {
862 int di;
863 unsigned long dl;
864 unsigned char *p = NULL;
865 Atom da, atom = None;
866
867 if (XGetWindowProperty(dpy, c->win, prop, 0L, sizeof atom, False, XA_ATOM,
868 &da, &di, &dl, &dl, &p) == Success && p) {
869 atom = *(Atom *)p;
870 XFree(p);
871 }
872 return atom;
873 }
874
875 int
876 getrootptr(int *x, int *y)
877 {
878 int di;
879 unsigned int dui;
880 Window dummy;
881
882 return XQueryPointer(dpy, root, &dummy, &dummy, x, y, &di, &di, &dui);
883 }
884
885 long
886 getstate(Window w)
887 {
888 int format;
889 long result = -1;
890 unsigned char *p = NULL;
891 unsigned long n, extra;
892 Atom real;
893
894 if (XGetWindowProperty(dpy, w, wmatom[WMState], 0L, 2L, False, wmatom[WMState],
895 &real, &format, &n, &extra, (unsigned char **)&p) != Success)
896 return -1;
897 if (n != 0)
898 result = *p;
899 XFree(p);
900 return result;
901 }
902
903 int
904 gettextprop(Window w, Atom atom, char *text, unsigned int size)
905 {
906 char **list = NULL;
907 int n;
908 XTextProperty name;
909
910 if (!text || size == 0)
911 return 0;
912 text[0] = '\0';
913 XGetTextProperty(dpy, w, &name, atom);
914 if (!name.nitems)
915 return 0;
916 if (name.encoding == XA_STRING)
917 strncpy(text, (char *)name.value, size - 1);
918 else {
919 if (XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success && n > 0 && *list) {
920 strncpy(text, *list, size - 1);
921 XFreeStringList(list);
922 }
923 }
924 text[size - 1] = '\0';
925 XFree(name.value);
926 return 1;
927 }
928
929 void
930 grabbuttons(Client *c, int focused)
931 {
932 updatenumlockmask();
933 {
934 unsigned int i, j;
935 unsigned int modifiers[] = { 0, LockMask, numlockmask, numlockmask|LockMask };
936 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
937 if (!focused)
938 XGrabButton(dpy, AnyButton, AnyModifier, c->win, False,
939 BUTTONMASK, GrabModeSync, GrabModeSync, None, None);
940 for (i = 0; i < LENGTH(buttons); i++)
941 if (buttons[i].click == ClkClientWin)
942 for (j = 0; j < LENGTH(modifiers); j++)
943 XGrabButton(dpy, buttons[i].button,
944 buttons[i].mask | modifiers[j],
945 c->win, False, BUTTONMASK,
946 GrabModeAsync, GrabModeSync, None, None);
947 }
948 }
949
950 void
951 grabkeys(void)
952 {
953 updatenumlockmask();
954 {
955 unsigned int i, j;
956 unsigned int modifiers[] = { 0, LockMask, numlockmask, numlockmask|LockMask };
957 KeyCode code;
958
959 XUngrabKey(dpy, AnyKey, AnyModifier, root);
960 for (i = 0; i < LENGTH(keys); i++)
961 if ((code = XKeysymToKeycode(dpy, keys[i].keysym)))
962 for (j = 0; j < LENGTH(modifiers); j++)
963 XGrabKey(dpy, code, keys[i].mod | modifiers[j], root,
964 True, GrabModeAsync, GrabModeAsync);
965 }
966 }
967
968 void
969 incnmaster(const Arg *arg)
970 {
971 selmon->nmaster = MAX(selmon->nmaster + arg->i, 0);
972 arrange(selmon);
973 }
974
975 #ifdef XINERAMA
976 static int
977 isuniquegeom(XineramaScreenInfo *unique, size_t n, XineramaScreenInfo *info)
978 {
979 while (n--)
980 if (unique[n].x_org == info->x_org && unique[n].y_org == info->y_org
981 && unique[n].width == info->width && unique[n].height == info->height)
982 return 0;
983 return 1;
984 }
985 #endif /* XINERAMA */
986
987 void
988 keypress(XEvent *e)
989 {
990 unsigned int i;
991 KeySym keysym;
992 XKeyEvent *ev;
993
994 ev = &e->xkey;
995 keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
996 for (i = 0; i < LENGTH(keys); i++)
997 if (keysym == keys[i].keysym
998 && CLEANMASK(keys[i].mod) == CLEANMASK(ev->state)
999 && keys[i].func)
1000 keys[i].func(&(keys[i].arg));
1001 }
1002
1003 void
1004 killclient(const Arg *arg)
1005 {
1006 if (!selmon->sel)
1007 return;
1008 if (!sendevent(selmon->sel, wmatom[WMDelete])) {
1009 XGrabServer(dpy);
1010 XSetErrorHandler(xerrordummy);
1011 XSetCloseDownMode(dpy, DestroyAll);
1012 XKillClient(dpy, selmon->sel->win);
1013 XSync(dpy, False);
1014 XSetErrorHandler(xerror);
1015 XUngrabServer(dpy);
1016 }
1017 }
1018
1019 void
1020 manage(Window w, XWindowAttributes *wa)
1021 {
1022 Client *c, *t = NULL;
1023 Window trans = None;
1024 XWindowChanges wc;
1025
1026 c = ecalloc(1, sizeof(Client));
1027 c->win = w;
1028 /* geometry */
1029 c->x = c->oldx = wa->x;
1030 c->y = c->oldy = wa->y;
1031 c->w = c->oldw = wa->width;
1032 c->h = c->oldh = wa->height;
1033 c->oldbw = wa->border_width;
1034
1035 updatetitle(c);
1036 if (XGetTransientForHint(dpy, w, &trans) && (t = wintoclient(trans))) {
1037 c->mon = t->mon;
1038 c->tags = t->tags;
1039 } else {
1040 c->mon = selmon;
1041 applyrules(c);
1042 }
1043
1044 if (c->x + WIDTH(c) > c->mon->mx + c->mon->mw)
1045 c->x = c->mon->mx + c->mon->mw - WIDTH(c);
1046 if (c->y + HEIGHT(c) > c->mon->my + c->mon->mh)
1047 c->y = c->mon->my + c->mon->mh - HEIGHT(c);
1048 c->x = MAX(c->x, c->mon->mx);
1049 /* only fix client y-offset, if the client center might cover the bar */
1050 c->y = MAX(c->y, ((c->mon->by == c->mon->my) && (c->x + (c->w / 2) >= c->mon->wx)
1051 && (c->x + (c->w / 2) < c->mon->wx + c->mon->ww)) ? bh : c->mon->my);
1052 c->bw = borderpx;
1053
1054 wc.border_width = c->bw;
1055 XConfigureWindow(dpy, w, CWBorderWidth, &wc);
1056 XSetWindowBorder(dpy, w, scheme[SchemeNorm][ColBorder].pixel);
1057 configure(c); /* propagates border_width, if size doesn't change */
1058 updatewindowtype(c);
1059 updatesizehints(c);
1060 updatewmhints(c);
1061 XSelectInput(dpy, w, EnterWindowMask|FocusChangeMask|PropertyChangeMask|StructureNotifyMask);
1062 grabbuttons(c, 0);
1063 if (!c->isfloating)
1064 c->isfloating = c->oldstate = trans != None || c->isfixed;
1065 if (c->isfloating)
1066 XRaiseWindow(dpy, c->win);
1067 attach(c);
1068 attachstack(c);
1069 XChangeProperty(dpy, root, netatom[NetClientList], XA_WINDOW, 32, PropModeAppend,
1070 (unsigned char *) &(c->win), 1);
1071 XMoveResizeWindow(dpy, c->win, c->x + 2 * sw, c->y, c->w, c->h); /* some windows require this */
1072 setclientstate(c, NormalState);
1073 if (c->mon == selmon)
1074 unfocus(selmon->sel, 0);
1075 c->mon->sel = c;
1076 arrange(c->mon);
1077 XMapWindow(dpy, c->win);
1078 focus(NULL);
1079 }
1080
1081 void
1082 mappingnotify(XEvent *e)
1083 {
1084 XMappingEvent *ev = &e->xmapping;
1085
1086 XRefreshKeyboardMapping(ev);
1087 if (ev->request == MappingKeyboard)
1088 grabkeys();
1089 }
1090
1091 void
1092 maprequest(XEvent *e)
1093 {
1094 static XWindowAttributes wa;
1095 XMapRequestEvent *ev = &e->xmaprequest;
1096
1097 if (!XGetWindowAttributes(dpy, ev->window, &wa))
1098 return;
1099 if (wa.override_redirect)
1100 return;
1101 if (!wintoclient(ev->window))
1102 manage(ev->window, &wa);
1103 }
1104
1105 void
1106 monocle(Monitor *m)
1107 {
1108 unsigned int n = 0;
1109 Client *c;
1110
1111 for (c = m->clients; c; c = c->next)
1112 if (ISVISIBLE(c))
1113 n++;
1114 if (n > 0) /* override layout symbol */
1115 snprintf(m->ltsymbol, sizeof m->ltsymbol, "[%d]", n);
1116 for (c = nexttiled(m->clients); c; c = nexttiled(c->next))
1117 resize(c, m->wx, m->wy, m->ww - 2 * c->bw, m->wh - 2 * c->bw, 0);
1118 }
1119
1120 void
1121 motionnotify(XEvent *e)
1122 {
1123 static Monitor *mon = NULL;
1124 Monitor *m;
1125 XMotionEvent *ev = &e->xmotion;
1126
1127 if (ev->window != root)
1128 return;
1129 if ((m = recttomon(ev->x_root, ev->y_root, 1, 1)) != mon && mon) {
1130 unfocus(selmon->sel, 1);
1131 selmon = m;
1132 focus(NULL);
1133 }
1134 mon = m;
1135 }
1136
1137 void
1138 movemouse(const Arg *arg)
1139 {
1140 int x, y, ocx, ocy, nx, ny;
1141 Client *c;
1142 Monitor *m;
1143 XEvent ev;
1144 Time lasttime = 0;
1145
1146 if (!(c = selmon->sel))
1147 return;
1148 if (c->isfullscreen) /* no support moving fullscreen windows by mouse */
1149 return;
1150 restack(selmon);
1151 ocx = c->x;
1152 ocy = c->y;
1153 if (XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
1154 None, cursor[CurMove]->cursor, CurrentTime) != GrabSuccess)
1155 return;
1156 if (!getrootptr(&x, &y))
1157 return;
1158 do {
1159 XMaskEvent(dpy, MOUSEMASK|ExposureMask|SubstructureRedirectMask, &ev);
1160 switch(ev.type) {
1161 case ConfigureRequest:
1162 case Expose:
1163 case MapRequest:
1164 handler[ev.type](&ev);
1165 break;
1166 case MotionNotify:
1167 if ((ev.xmotion.time - lasttime) <= (1000 / 60))
1168 continue;
1169 lasttime = ev.xmotion.time;
1170
1171 nx = ocx + (ev.xmotion.x - x);
1172 ny = ocy + (ev.xmotion.y - y);
1173 if (abs(selmon->wx - nx) < snap)
1174 nx = selmon->wx;
1175 else if (abs((selmon->wx + selmon->ww) - (nx + WIDTH(c))) < snap)
1176 nx = selmon->wx + selmon->ww - WIDTH(c);
1177 if (abs(selmon->wy - ny) < snap)
1178 ny = selmon->wy;
1179 else if (abs((selmon->wy + selmon->wh) - (ny + HEIGHT(c))) < snap)
1180 ny = selmon->wy + selmon->wh - HEIGHT(c);
1181 if (!c->isfloating && selmon->lt[selmon->sellt]->arrange
1182 && (abs(nx - c->x) > snap || abs(ny - c->y) > snap))
1183 togglefloating(NULL);
1184 if (!selmon->lt[selmon->sellt]->arrange || c->isfloating)
1185 resize(c, nx, ny, c->w, c->h, 1);
1186 break;
1187 }
1188 } while (ev.type != ButtonRelease);
1189 XUngrabPointer(dpy, CurrentTime);
1190 if ((m = recttomon(c->x, c->y, c->w, c->h)) != selmon) {
1191 sendmon(c, m);
1192 selmon = m;
1193 focus(NULL);
1194 }
1195 }
1196
1197 Client *
1198 nexttiled(Client *c)
1199 {
1200 for (; c && (c->isfloating || !ISVISIBLE(c)); c = c->next);
1201 return c;
1202 }
1203
1204 void
1205 pop(Client *c)
1206 {
1207 detach(c);
1208 attach(c);
1209 focus(c);
1210 arrange(c->mon);
1211 }
1212
1213 void
1214 propertynotify(XEvent *e)
1215 {
1216 Client *c;
1217 Window trans;
1218 XPropertyEvent *ev = &e->xproperty;
1219
1220 if ((ev->window == root) && (ev->atom == XA_WM_NAME))
1221 updatestatus();
1222 else if (ev->state == PropertyDelete)
1223 return; /* ignore */
1224 else if ((c = wintoclient(ev->window))) {
1225 switch(ev->atom) {
1226 default: break;
1227 case XA_WM_TRANSIENT_FOR:
1228 if (!c->isfloating && (XGetTransientForHint(dpy, c->win, &trans)) &&
1229 (c->isfloating = (wintoclient(trans)) != NULL))
1230 arrange(c->mon);
1231 break;
1232 case XA_WM_NORMAL_HINTS:
1233 updatesizehints(c);
1234 break;
1235 case XA_WM_HINTS:
1236 updatewmhints(c);
1237 drawbars();
1238 break;
1239 }
1240 if (ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
1241 updatetitle(c);
1242 if (c == c->mon->sel)
1243 drawbar(c->mon);
1244 }
1245 if (ev->atom == netatom[NetWMWindowType])
1246 updatewindowtype(c);
1247 }
1248 }
1249
1250 void
1251 quit(const Arg *arg)
1252 {
1253 running = 0;
1254 }
1255
1256 Monitor *
1257 recttomon(int x, int y, int w, int h)
1258 {
1259 Monitor *m, *r = selmon;
1260 int a, area = 0;
1261
1262 for (m = mons; m; m = m->next)
1263 if ((a = INTERSECT(x, y, w, h, m)) > area) {
1264 area = a;
1265 r = m;
1266 }
1267 return r;
1268 }
1269
1270 void
1271 resize(Client *c, int x, int y, int w, int h, int interact)
1272 {
1273 if (applysizehints(c, &x, &y, &w, &h, interact))
1274 resizeclient(c, x, y, w, h);
1275 }
1276
1277 void
1278 resizeclient(Client *c, int x, int y, int w, int h)
1279 {
1280 XWindowChanges wc;
1281
1282 c->oldx = c->x; c->x = wc.x = x;
1283 c->oldy = c->y; c->y = wc.y = y;
1284 c->oldw = c->w; c->w = wc.width = w;
1285 c->oldh = c->h; c->h = wc.height = h;
1286 wc.border_width = c->bw;
1287 XConfigureWindow(dpy, c->win, CWX|CWY|CWWidth|CWHeight|CWBorderWidth, &wc);
1288 configure(c);
1289 XSync(dpy, False);
1290 }
1291
1292 void
1293 resizemouse(const Arg *arg)
1294 {
1295 int ocx, ocy, nw, nh;
1296 Client *c;
1297 Monitor *m;
1298 XEvent ev;
1299 Time lasttime = 0;
1300
1301 if (!(c = selmon->sel))
1302 return;
1303 if (c->isfullscreen) /* no support resizing fullscreen windows by mouse */
1304 return;
1305 restack(selmon);
1306 ocx = c->x;
1307 ocy = c->y;
1308 if (XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
1309 None, cursor[CurResize]->cursor, CurrentTime) != GrabSuccess)
1310 return;
1311 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->bw - 1, c->h + c->bw - 1);
1312 do {
1313 XMaskEvent(dpy, MOUSEMASK|ExposureMask|SubstructureRedirectMask, &ev);
1314 switch(ev.type) {
1315 case ConfigureRequest:
1316 case Expose:
1317 case MapRequest:
1318 handler[ev.type](&ev);
1319 break;
1320 case MotionNotify:
1321 if ((ev.xmotion.time - lasttime) <= (1000 / 60))
1322 continue;
1323 lasttime = ev.xmotion.time;
1324
1325 nw = MAX(ev.xmotion.x - ocx - 2 * c->bw + 1, 1);
1326 nh = MAX(ev.xmotion.y - ocy - 2 * c->bw + 1, 1);
1327 if (c->mon->wx + nw >= selmon->wx && c->mon->wx + nw <= selmon->wx + selmon->ww
1328 && c->mon->wy + nh >= selmon->wy && c->mon->wy + nh <= selmon->wy + selmon->wh)
1329 {
1330 if (!c->isfloating && selmon->lt[selmon->sellt]->arrange
1331 && (abs(nw - c->w) > snap || abs(nh - c->h) > snap))
1332 togglefloating(NULL);
1333 }
1334 if (!selmon->lt[selmon->sellt]->arrange || c->isfloating)
1335 resize(c, c->x, c->y, nw, nh, 1);
1336 break;
1337 }
1338 } while (ev.type != ButtonRelease);
1339 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->bw - 1, c->h + c->bw - 1);
1340 XUngrabPointer(dpy, CurrentTime);
1341 while (XCheckMaskEvent(dpy, EnterWindowMask, &ev));
1342 if ((m = recttomon(c->x, c->y, c->w, c->h)) != selmon) {
1343 sendmon(c, m);
1344 selmon = m;
1345 focus(NULL);
1346 }
1347 }
1348
1349 void
1350 restack(Monitor *m)
1351 {
1352 Client *c;
1353 XEvent ev;
1354 XWindowChanges wc;
1355
1356 drawbar(m);
1357 if (!m->sel)
1358 return;
1359 if (m->sel->isfloating || !m->lt[m->sellt]->arrange)
1360 XRaiseWindow(dpy, m->sel->win);
1361 if (m->lt[m->sellt]->arrange) {
1362 wc.stack_mode = Below;
1363 wc.sibling = m->barwin;
1364 for (c = m->stack; c; c = c->snext)
1365 if (!c->isfloating && ISVISIBLE(c)) {
1366 XConfigureWindow(dpy, c->win, CWSibling|CWStackMode, &wc);
1367 wc.sibling = c->win;
1368 }
1369 }
1370 XSync(dpy, False);
1371 while (XCheckMaskEvent(dpy, EnterWindowMask, &ev));
1372 }
1373
1374 void
1375 run(void)
1376 {
1377 XEvent ev;
1378 /* main event loop */
1379 XSync(dpy, False);
1380 while (running && !XNextEvent(dpy, &ev))
1381 if (handler[ev.type])
1382 handler[ev.type](&ev); /* call handler */
1383 }
1384
1385 void
1386 scan(void)
1387 {
1388 unsigned int i, num;
1389 Window d1, d2, *wins = NULL;
1390 XWindowAttributes wa;
1391
1392 if (XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
1393 for (i = 0; i < num; i++) {
1394 if (!XGetWindowAttributes(dpy, wins[i], &wa)
1395 || wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
1396 continue;
1397 if (wa.map_state == IsViewable || getstate(wins[i]) == IconicState)
1398 manage(wins[i], &wa);
1399 }
1400 for (i = 0; i < num; i++) { /* now the transients */
1401 if (!XGetWindowAttributes(dpy, wins[i], &wa))
1402 continue;
1403 if (XGetTransientForHint(dpy, wins[i], &d1)
1404 && (wa.map_state == IsViewable || getstate(wins[i]) == IconicState))
1405 manage(wins[i], &wa);
1406 }
1407 if (wins)
1408 XFree(wins);
1409 }
1410 }
1411
1412 void
1413 sendmon(Client *c, Monitor *m)
1414 {
1415 if (c->mon == m)
1416 return;
1417 unfocus(c, 1);
1418 detach(c);
1419 detachstack(c);
1420 c->mon = m;
1421 c->tags = m->tagset[m->seltags]; /* assign tags of target monitor */
1422 attach(c);
1423 attachstack(c);
1424 focus(NULL);
1425 arrange(NULL);
1426 }
1427
1428 void
1429 setclientstate(Client *c, long state)
1430 {
1431 long data[] = { state, None };
1432
1433 XChangeProperty(dpy, c->win, wmatom[WMState], wmatom[WMState], 32,
1434 PropModeReplace, (unsigned char *)data, 2);
1435 }
1436
1437 int
1438 sendevent(Client *c, Atom proto)
1439 {
1440 int n;
1441 Atom *protocols;
1442 int exists = 0;
1443 XEvent ev;
1444
1445 if (XGetWMProtocols(dpy, c->win, &protocols, &n)) {
1446 while (!exists && n--)
1447 exists = protocols[n] == proto;
1448 XFree(protocols);
1449 }
1450 if (exists) {
1451 ev.type = ClientMessage;
1452 ev.xclient.window = c->win;
1453 ev.xclient.message_type = wmatom[WMProtocols];
1454 ev.xclient.format = 32;
1455 ev.xclient.data.l[0] = proto;
1456 ev.xclient.data.l[1] = CurrentTime;
1457 XSendEvent(dpy, c->win, False, NoEventMask, &ev);
1458 }
1459 return exists;
1460 }
1461
1462 void
1463 setfocus(Client *c)
1464 {
1465 if (!c->neverfocus) {
1466 XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
1467 XChangeProperty(dpy, root, netatom[NetActiveWindow],
1468 XA_WINDOW, 32, PropModeReplace,
1469 (unsigned char *) &(c->win), 1);
1470 }
1471 sendevent(c, wmatom[WMTakeFocus]);
1472 }
1473
1474 void
1475 setfullscreen(Client *c, int fullscreen)
1476 {
1477 if (fullscreen && !c->isfullscreen) {
1478 XChangeProperty(dpy, c->win, netatom[NetWMState], XA_ATOM, 32,
1479 PropModeReplace, (unsigned char*)&netatom[NetWMFullscreen], 1);
1480 c->isfullscreen = 1;
1481 c->oldstate = c->isfloating;
1482 c->oldbw = c->bw;
1483 c->bw = 0;
1484 c->isfloating = 1;
1485 resizeclient(c, c->mon->mx, c->mon->my, c->mon->mw, c->mon->mh);
1486 XRaiseWindow(dpy, c->win);
1487 } else if (!fullscreen && c->isfullscreen){
1488 XChangeProperty(dpy, c->win, netatom[NetWMState], XA_ATOM, 32,
1489 PropModeReplace, (unsigned char*)0, 0);
1490 c->isfullscreen = 0;
1491 c->isfloating = c->oldstate;
1492 c->bw = c->oldbw;
1493 c->x = c->oldx;
1494 c->y = c->oldy;
1495 c->w = c->oldw;
1496 c->h = c->oldh;
1497 resizeclient(c, c->x, c->y, c->w, c->h);
1498 arrange(c->mon);
1499 }
1500 }
1501
1502 void
1503 setlayout(const Arg *arg)
1504 {
1505 if (!arg || !arg->v || arg->v != selmon->lt[selmon->sellt])
1506 selmon->sellt ^= 1;
1507 if (arg && arg->v)
1508 selmon->lt[selmon->sellt] = (Layout *)arg->v;
1509 strncpy(selmon->ltsymbol, selmon->lt[selmon->sellt]->symbol, sizeof selmon->ltsymbol);
1510 if (selmon->sel)
1511 arrange(selmon);
1512 else
1513 drawbar(selmon);
1514 }
1515
1516 /* arg > 1.0 will set mfact absolutely */
1517 void
1518 setmfact(const Arg *arg)
1519 {
1520 float f;
1521
1522 if (!arg || !selmon->lt[selmon->sellt]->arrange)
1523 return;
1524 f = arg->f < 1.0 ? arg->f + selmon->mfact : arg->f - 1.0;
1525 if (f < 0.1 || f > 0.9)
1526 return;
1527 selmon->mfact = f;
1528 arrange(selmon);
1529 }
1530
1531 void
1532 setup(void)
1533 {
1534 int i;
1535 XSetWindowAttributes wa;
1536 Atom utf8string;
1537
1538 /* clean up any zombies immediately */
1539 sigchld(0);
1540
1541 /* init screen */
1542 screen = DefaultScreen(dpy);
1543 sw = DisplayWidth(dpy, screen);
1544 sh = DisplayHeight(dpy, screen);
1545 root = RootWindow(dpy, screen);
1546 drw = drw_create(dpy, screen, root, sw, sh);
1547 if (!drw_fontset_create(drw, fonts, LENGTH(fonts)))
1548 die("no fonts could be loaded.");
1549 lrpad = drw->fonts->h;
1550 bh = drw->fonts->h + 2;
1551 updategeom();
1552 /* init atoms */
1553 utf8string = XInternAtom(dpy, "UTF8_STRING", False);
1554 wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
1555 wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
1556 wmatom[WMState] = XInternAtom(dpy, "WM_STATE", False);
1557 wmatom[WMTakeFocus] = XInternAtom(dpy, "WM_TAKE_FOCUS", False);
1558 netatom[NetActiveWindow] = XInternAtom(dpy, "_NET_ACTIVE_WINDOW", False);
1559 netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
1560 netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
1561 netatom[NetWMState] = XInternAtom(dpy, "_NET_WM_STATE", False);
1562 netatom[NetWMCheck] = XInternAtom(dpy, "_NET_SUPPORTING_WM_CHECK", False);
1563 netatom[NetWMFullscreen] = XInternAtom(dpy, "_NET_WM_STATE_FULLSCREEN", False);
1564 netatom[NetWMWindowType] = XInternAtom(dpy, "_NET_WM_WINDOW_TYPE", False);
1565 netatom[NetWMWindowTypeDialog] = XInternAtom(dpy, "_NET_WM_WINDOW_TYPE_DIALOG", False);
1566 netatom[NetClientList] = XInternAtom(dpy, "_NET_CLIENT_LIST", False);
1567 /* init cursors */
1568 cursor[CurNormal] = drw_cur_create(drw, XC_left_ptr);
1569 cursor[CurResize] = drw_cur_create(drw, XC_sizing);
1570 cursor[CurMove] = drw_cur_create(drw, XC_fleur);
1571 /* init appearance */
1572 scheme = ecalloc(LENGTH(colors), sizeof(Scm));
1573 for (i = 0; i < LENGTH(colors); i++)
1574 scheme[i] = drw_scm_create(drw, colors[i], 3);
1575 /* init bars */
1576 updatebars();
1577 updatestatus();
1578 /* supporting window for NetWMCheck */
1579 wmcheckwin = XCreateSimpleWindow(dpy, root, 0, 0, 1, 1, 0, 0, 0);
1580 XChangeProperty(dpy, wmcheckwin, netatom[NetWMCheck], XA_WINDOW, 32,
1581 PropModeReplace, (unsigned char *) &wmcheckwin, 1);
1582 XChangeProperty(dpy, wmcheckwin, netatom[NetWMName], utf8string, 8,
1583 PropModeReplace, (unsigned char *) "dwm", 4);
1584 XChangeProperty(dpy, root, netatom[NetWMCheck], XA_WINDOW, 32,
1585 PropModeReplace, (unsigned char *) &wmcheckwin, 1);
1586 /* EWMH support per view */
1587 XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
1588 PropModeReplace, (unsigned char *) netatom, NetLast);
1589 XDeleteProperty(dpy, root, netatom[NetClientList]);
1590 /* select events */
1591 wa.cursor = cursor[CurNormal]->cursor;
1592 wa.event_mask = SubstructureRedirectMask|SubstructureNotifyMask
1593 |ButtonPressMask|PointerMotionMask|EnterWindowMask
1594 |LeaveWindowMask|StructureNotifyMask|PropertyChangeMask;
1595 XChangeWindowAttributes(dpy, root, CWEventMask|CWCursor, &wa);
1596 XSelectInput(dpy, root, wa.event_mask);
1597 grabkeys();
1598 focus(NULL);
1599 }
1600
1601
1602 void
1603 seturgent(Client *c, int urg)
1604 {
1605 XWMHints *wmh;
1606
1607 c->isurgent = urg;
1608 if (!(wmh = XGetWMHints(dpy, c->win)))
1609 return;
1610 wmh->flags = urg ? (wmh->flags | XUrgencyHint) : (wmh->flags & ~XUrgencyHint);
1611 XSetWMHints(dpy, c->win, wmh);
1612 XFree(wmh);
1613 }
1614
1615 void
1616 showhide(Client *c)
1617 {
1618 if (!c)
1619 return;
1620 if (ISVISIBLE(c)) {
1621 /* show clients top down */
1622 XMoveWindow(dpy, c->win, c->x, c->y);
1623 if ((!c->mon->lt[c->mon->sellt]->arrange || c->isfloating) && !c->isfullscreen)
1624 resize(c, c->x, c->y, c->w, c->h, 0);
1625 showhide(c->snext);
1626 } else {
1627 /* hide clients bottom up */
1628 showhide(c->snext);
1629 XMoveWindow(dpy, c->win, WIDTH(c) * -2, c->y);
1630 }
1631 }
1632
1633 void
1634 sigchld(int unused)
1635 {
1636 if (signal(SIGCHLD, sigchld) == SIG_ERR)
1637 die("can't install SIGCHLD handler:");
1638 while (0 < waitpid(-1, NULL, WNOHANG));
1639 }
1640
1641 void
1642 spawn(const Arg *arg)
1643 {
1644 if (arg->v == dmenucmd)
1645 dmenumon[0] = '0' + selmon->num;
1646 if (fork() == 0) {
1647 if (dpy)
1648 close(ConnectionNumber(dpy));
1649 setsid();
1650 execvp(((char **)arg->v)[0], (char **)arg->v);
1651 fprintf(stderr, "dwm: execvp %s", ((char **)arg->v)[0]);
1652 perror(" failed");
1653 exit(EXIT_SUCCESS);
1654 }
1655 }
1656
1657 void
1658 tag(const Arg *arg)
1659 {
1660 if (selmon->sel && arg->ui & TAGMASK) {
1661 selmon->sel->tags = arg->ui & TAGMASK;
1662 focus(NULL);
1663 arrange(selmon);
1664 }
1665 }
1666
1667 void
1668 tagmon(const Arg *arg)
1669 {
1670 if (!selmon->sel || !mons->next)
1671 return;
1672 sendmon(selmon->sel, dirtomon(arg->i));
1673 }
1674
1675 void
1676 tile(Monitor *m)
1677 {
1678 unsigned int i, n, h, mw, my, ty;
1679 Client *c;
1680
1681 for (n = 0, c = nexttiled(m->clients); c; c = nexttiled(c->next), n++);
1682 if (n == 0)
1683 return;
1684
1685 if (n > m->nmaster)
1686 mw = m->nmaster ? m->ww * m->mfact : 0;
1687 else
1688 mw = m->ww;
1689 for (i = my = ty = 0, c = nexttiled(m->clients); c; c = nexttiled(c->next), i++)
1690 if (i < m->nmaster) {
1691 h = (m->wh - my) / (MIN(n, m->nmaster) - i);
1692 resize(c, m->wx, m->wy + my, mw - (2*c->bw), h - (2*c->bw), 0);
1693 my += HEIGHT(c);
1694 } else {
1695 h = (m->wh - ty) / (n - i);
1696 resize(c, m->wx + mw, m->wy + ty, m->ww - mw - (2*c->bw), h - (2*c->bw), 0);
1697 ty += HEIGHT(c);
1698 }
1699 }
1700
1701 void
1702 togglebar(const Arg *arg)
1703 {
1704 selmon->showbar = !selmon->showbar;
1705 updatebarpos(selmon);
1706 XMoveResizeWindow(dpy, selmon->barwin, selmon->wx, selmon->by, selmon->ww, bh);
1707 arrange(selmon);
1708 }
1709
1710 void
1711 togglefloating(const Arg *arg)
1712 {
1713 if (!selmon->sel)
1714 return;
1715 if (selmon->sel->isfullscreen) /* no support for fullscreen windows */
1716 return;
1717 selmon->sel->isfloating = !selmon->sel->isfloating || selmon->sel->isfixed;
1718 if (selmon->sel->isfloating)
1719 resize(selmon->sel, selmon->sel->x, selmon->sel->y,
1720 selmon->sel->w, selmon->sel->h, 0);
1721 arrange(selmon);
1722 }
1723
1724 void
1725 toggletag(const Arg *arg)
1726 {
1727 unsigned int newtags;
1728
1729 if (!selmon->sel)
1730 return;
1731 newtags = selmon->sel->tags ^ (arg->ui & TAGMASK);
1732 if (newtags) {
1733 selmon->sel->tags = newtags;
1734 focus(NULL);
1735 arrange(selmon);
1736 }
1737 }
1738
1739 void
1740 toggleview(const Arg *arg)
1741 {
1742 unsigned int newtagset = selmon->tagset[selmon->seltags] ^ (arg->ui & TAGMASK);
1743
1744 if (newtagset) {
1745 selmon->tagset[selmon->seltags] = newtagset;
1746 focus(NULL);
1747 arrange(selmon);
1748 }
1749 }
1750
1751 void
1752 unfocus(Client *c, int setfocus)
1753 {
1754 if (!c)
1755 return;
1756 grabbuttons(c, 0);
1757 XSetWindowBorder(dpy, c->win, scheme[SchemeNorm][ColBorder].pixel);
1758 if (setfocus) {
1759 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
1760 XDeleteProperty(dpy, root, netatom[NetActiveWindow]);
1761 }
1762 }
1763
1764 void
1765 unmanage(Client *c, int destroyed)
1766 {
1767 Monitor *m = c->mon;
1768 XWindowChanges wc;
1769
1770 detach(c);
1771 detachstack(c);
1772 if (!destroyed) {
1773 wc.border_width = c->oldbw;
1774 XGrabServer(dpy); /* avoid race conditions */
1775 XSetErrorHandler(xerrordummy);
1776 XConfigureWindow(dpy, c->win, CWBorderWidth, &wc); /* restore border */
1777 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
1778 setclientstate(c, WithdrawnState);
1779 XSync(dpy, False);
1780 XSetErrorHandler(xerror);
1781 XUngrabServer(dpy);
1782 }
1783 free(c);
1784 focus(NULL);
1785 updateclientlist();
1786 arrange(m);
1787 }
1788
1789 void
1790 unmapnotify(XEvent *e)
1791 {
1792 Client *c;
1793 XUnmapEvent *ev = &e->xunmap;
1794
1795 if ((c = wintoclient(ev->window))) {
1796 if (ev->send_event)
1797 setclientstate(c, WithdrawnState);
1798 else
1799 unmanage(c, 0);
1800 }
1801 }
1802
1803 void
1804 updatebars(void)
1805 {
1806 Monitor *m;
1807 XSetWindowAttributes wa = {
1808 .override_redirect = True,
1809 .background_pixmap = ParentRelative,
1810 .event_mask = ButtonPressMask|ExposureMask
1811 };
1812 for (m = mons; m; m = m->next) {
1813 if (m->barwin)
1814 continue;
1815 m->barwin = XCreateWindow(dpy, root, m->wx, m->by, m->ww, bh, 0, DefaultDepth(dpy, screen),
1816 CopyFromParent, DefaultVisual(dpy, screen),
1817 CWOverrideRedirect|CWBackPixmap|CWEventMask, &wa);
1818 XDefineCursor(dpy, m->barwin, cursor[CurNormal]->cursor);
1819 XMapRaised(dpy, m->barwin);
1820 }
1821 }
1822
1823 void
1824 updatebarpos(Monitor *m)
1825 {
1826 m->wy = m->my;
1827 m->wh = m->mh;
1828 if (m->showbar) {
1829 m->wh -= bh;
1830 m->by = m->topbar ? m->wy : m->wy + m->wh;
1831 m->wy = m->topbar ? m->wy + bh : m->wy;
1832 } else
1833 m->by = -bh;
1834 }
1835
1836 void
1837 updateclientlist()
1838 {
1839 Client *c;
1840 Monitor *m;
1841
1842 XDeleteProperty(dpy, root, netatom[NetClientList]);
1843 for (m = mons; m; m = m->next)
1844 for (c = m->clients; c; c = c->next)
1845 XChangeProperty(dpy, root, netatom[NetClientList],
1846 XA_WINDOW, 32, PropModeAppend,
1847 (unsigned char *) &(c->win), 1);
1848 }
1849
1850 int
1851 updategeom(void)
1852 {
1853 int dirty = 0;
1854
1855 #ifdef XINERAMA
1856 if (XineramaIsActive(dpy)) {
1857 int i, j, n, nn;
1858 Client *c;
1859 Monitor *m;
1860 XineramaScreenInfo *info = XineramaQueryScreens(dpy, &nn);
1861 XineramaScreenInfo *unique = NULL;
1862
1863 for (n = 0, m = mons; m; m = m->next, n++);
1864 /* only consider unique geometries as separate screens */
1865 unique = ecalloc(nn, sizeof(XineramaScreenInfo));
1866 for (i = 0, j = 0; i < nn; i++)
1867 if (isuniquegeom(unique, j, &info[i]))
1868 memcpy(&unique[j++], &info[i], sizeof(XineramaScreenInfo));
1869 XFree(info);
1870 nn = j;
1871 if (n <= nn) { /* new monitors available */
1872 for (i = 0; i < (nn - n); i++) {
1873 for (m = mons; m && m->next; m = m->next);
1874 if (m)
1875 m->next = createmon();
1876 else
1877 mons = createmon();
1878 }
1879 for (i = 0, m = mons; i < nn && m; m = m->next, i++)
1880 if (i >= n
1881 || unique[i].x_org != m->mx || unique[i].y_org != m->my
1882 || unique[i].width != m->mw || unique[i].height != m->mh)
1883 {
1884 dirty = 1;
1885 m->num = i;
1886 m->mx = m->wx = unique[i].x_org;
1887 m->my = m->wy = unique[i].y_org;
1888 m->mw = m->ww = unique[i].width;
1889 m->mh = m->wh = unique[i].height;
1890 updatebarpos(m);
1891 }
1892 } else { /* less monitors available nn < n */
1893 for (i = nn; i < n; i++) {
1894 for (m = mons; m && m->next; m = m->next);
1895 while ((c = m->clients)) {
1896 dirty = 1;
1897 m->clients = c->next;
1898 detachstack(c);
1899 c->mon = mons;
1900 attach(c);
1901 attachstack(c);
1902 }
1903 if (m == selmon)
1904 selmon = mons;
1905 cleanupmon(m);
1906 }
1907 }
1908 free(unique);
1909 } else
1910 #endif /* XINERAMA */
1911 { /* default monitor setup */
1912 if (!mons)
1913 mons = createmon();
1914 if (mons->mw != sw || mons->mh != sh) {
1915 dirty = 1;
1916 mons->mw = mons->ww = sw;
1917 mons->mh = mons->wh = sh;
1918 updatebarpos(mons);
1919 }
1920 }
1921 if (dirty) {
1922 selmon = mons;
1923 selmon = wintomon(root);
1924 }
1925 return dirty;
1926 }
1927
1928 void
1929 updatenumlockmask(void)
1930 {
1931 unsigned int i, j;
1932 XModifierKeymap *modmap;
1933
1934 numlockmask = 0;
1935 modmap = XGetModifierMapping(dpy);
1936 for (i = 0; i < 8; i++)
1937 for (j = 0; j < modmap->max_keypermod; j++)
1938 if (modmap->modifiermap[i * modmap->max_keypermod + j]
1939 == XKeysymToKeycode(dpy, XK_Num_Lock))
1940 numlockmask = (1 << i);
1941 XFreeModifiermap(modmap);
1942 }
1943
1944 void
1945 updatesizehints(Client *c)
1946 {
1947 long msize;
1948 XSizeHints size;
1949
1950 if (!XGetWMNormalHints(dpy, c->win, &size, &msize))
1951 /* size is uninitialized, ensure that size.flags aren't used */
1952 size.flags = PSize;
1953 if (size.flags & PBaseSize) {
1954 c->basew = size.base_width;
1955 c->baseh = size.base_height;
1956 } else if (size.flags & PMinSize) {
1957 c->basew = size.min_width;
1958 c->baseh = size.min_height;
1959 } else
1960 c->basew = c->baseh = 0;
1961 if (size.flags & PResizeInc) {
1962 c->incw = size.width_inc;
1963 c->inch = size.height_inc;
1964 } else
1965 c->incw = c->inch = 0;
1966 if (size.flags & PMaxSize) {
1967 c->maxw = size.max_width;
1968 c->maxh = size.max_height;
1969 } else
1970 c->maxw = c->maxh = 0;
1971 if (size.flags & PMinSize) {
1972 c->minw = size.min_width;
1973 c->minh = size.min_height;
1974 } else if (size.flags & PBaseSize) {
1975 c->minw = size.base_width;
1976 c->minh = size.base_height;
1977 } else
1978 c->minw = c->minh = 0;
1979 if (size.flags & PAspect) {
1980 c->mina = (float)size.min_aspect.y / size.min_aspect.x;
1981 c->maxa = (float)size.max_aspect.x / size.max_aspect.y;
1982 } else
1983 c->maxa = c->mina = 0.0;
1984 c->isfixed = (c->maxw && c->maxh && c->maxw == c->minw && c->maxh == c->minh);
1985 }
1986
1987 void
1988 updatetitle(Client *c)
1989 {
1990 if (!gettextprop(c->win, netatom[NetWMName], c->name, sizeof c->name))
1991 gettextprop(c->win, XA_WM_NAME, c->name, sizeof c->name);
1992 if (c->name[0] == '\0') /* hack to mark broken clients */
1993 strcpy(c->name, broken);
1994 }
1995
1996 void
1997 updatestatus(void)
1998 {
1999 if (!gettextprop(root, XA_WM_NAME, stext, sizeof(stext)))
2000 strcpy(stext, "dwm-"VERSION);
2001 drawbar(selmon);
2002 }
2003
2004 void
2005 updatewindowtype(Client *c)
2006 {
2007 Atom state = getatomprop(c, netatom[NetWMState]);
2008 Atom wtype = getatomprop(c, netatom[NetWMWindowType]);
2009
2010 if (state == netatom[NetWMFullscreen])
2011 setfullscreen(c, 1);
2012 if (wtype == netatom[NetWMWindowTypeDialog])
2013 c->isfloating = 1;
2014 }
2015
2016 void
2017 updatewmhints(Client *c)
2018 {
2019 XWMHints *wmh;
2020
2021 if ((wmh = XGetWMHints(dpy, c->win))) {
2022 if (c == selmon->sel && wmh->flags & XUrgencyHint) {
2023 wmh->flags &= ~XUrgencyHint;
2024 XSetWMHints(dpy, c->win, wmh);
2025 } else
2026 c->isurgent = (wmh->flags & XUrgencyHint) ? 1 : 0;
2027 if (wmh->flags & InputHint)
2028 c->neverfocus = !wmh->input;
2029 else
2030 c->neverfocus = 0;
2031 XFree(wmh);
2032 }
2033 }
2034
2035 void
2036 view(const Arg *arg)
2037 {
2038 if ((arg->ui & TAGMASK) == selmon->tagset[selmon->seltags])
2039 return;
2040 selmon->seltags ^= 1; /* toggle sel tagset */
2041 if (arg->ui & TAGMASK)
2042 selmon->tagset[selmon->seltags] = arg->ui & TAGMASK;
2043 focus(NULL);
2044 arrange(selmon);
2045 }
2046
2047 Client *
2048 wintoclient(Window w)
2049 {
2050 Client *c;
2051 Monitor *m;
2052
2053 for (m = mons; m; m = m->next)
2054 for (c = m->clients; c; c = c->next)
2055 if (c->win == w)
2056 return c;
2057 return NULL;
2058 }
2059
2060 Monitor *
2061 wintomon(Window w)
2062 {
2063 int x, y;
2064 Client *c;
2065 Monitor *m;
2066
2067 if (w == root && getrootptr(&x, &y))
2068 return recttomon(x, y, 1, 1);
2069 for (m = mons; m; m = m->next)
2070 if (w == m->barwin)
2071 return m;
2072 if ((c = wintoclient(w)))
2073 return c->mon;
2074 return selmon;
2075 }
2076
2077 /* There's no way to check accesses to destroyed windows, thus those cases are
2078 * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
2079 * default error handler, which may call exit. */
2080 int
2081 xerror(Display *dpy, XErrorEvent *ee)
2082 {
2083 if (ee->error_code == BadWindow
2084 || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
2085 || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
2086 || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
2087 || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
2088 || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
2089 || (ee->request_code == X_GrabButton && ee->error_code == BadAccess)
2090 || (ee->request_code == X_GrabKey && ee->error_code == BadAccess)
2091 || (ee->request_code == X_CopyArea && ee->error_code == BadDrawable))
2092 return 0;
2093 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
2094 ee->request_code, ee->error_code);
2095 return xerrorxlib(dpy, ee); /* may call exit */
2096 }
2097
2098 int
2099 xerrordummy(Display *dpy, XErrorEvent *ee)
2100 {
2101 return 0;
2102 }
2103
2104 /* Startup Error handler to check if another window manager
2105 * is already running. */
2106 int
2107 xerrorstart(Display *dpy, XErrorEvent *ee)
2108 {
2109 die("dwm: another window manager is already running");
2110 return -1;
2111 }
2112
2113 void
2114 zoom(const Arg *arg)
2115 {
2116 Client *c = selmon->sel;
2117
2118 if (!selmon->lt[selmon->sellt]->arrange
2119 || (selmon->sel && selmon->sel->isfloating))
2120 return;
2121 if (c == nexttiled(selmon->clients))
2122 if (!c || !(c = nexttiled(c->next)))
2123 return;
2124 pop(c);
2125 }
2126
2127 int
2128 main(int argc, char *argv[])
2129 {
2130 if (argc == 2 && !strcmp("-v", argv[1]))
2131 die("dwm-"VERSION);
2132 else if (argc != 1)
2133 die("usage: dwm [-v]");
2134 if (!setlocale(LC_CTYPE, "") || !XSupportsLocale())
2135 fputs("warning: no locale support\n", stderr);
2136 if (!(dpy = XOpenDisplay(NULL)))
2137 die("dwm: cannot open display");
2138 checkotherwm();
2139 setup();
2140 scan();
2141 run();
2142 cleanup();
2143 XCloseDisplay(dpy);
2144 return EXIT_SUCCESS;
2145 }