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applied Andreas Amanns' netwm_client_list patch, but with some indentation fixes
[dwm.git] / dwm.c
1 /* See LICENSE file for copyright and license details.
2 *
3 * dynamic window manager is designed like any other X client as well. It is
4 * driven through handling X events. In contrast to other X clients, a window
5 * manager selects for SubstructureRedirectMask on the root window, to receive
6 * events about window (dis-)appearance. Only one X connection at a time is
7 * allowed to select for this event mask.
8 *
9 * The event handlers of dwm are organized in an array which is accessed
10 * whenever a new event has been fetched. This allows event dispatching
11 * in O(1) time.
12 *
13 * Each child of the root window is called a client, except windows which have
14 * set the override_redirect flag. Clients are organized in a linked client
15 * list on each monitor, the focus history is remembered through a stack list
16 * on each monitor. Each client contains a bit array to indicate the tags of a
17 * client.
18 *
19 * Keys and tagging rules are organized as arrays and defined in config.h.
20 *
21 * To understand everything else, start reading main().
22 */
23 #include <errno.h>
24 #include <locale.h>
25 #include <stdarg.h>
26 #include <signal.h>
27 #include <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
43 /* macros */
44 #define BUTTONMASK (ButtonPressMask|ButtonReleaseMask)
45 #define CLEANMASK(mask) (mask & ~(numlockmask|LockMask) & (ShiftMask|ControlMask|Mod1Mask|Mod2Mask|Mod3Mask|Mod4Mask|Mod5Mask))
46 #define INTERSECT(x,y,w,h,m) (MAX(0, MIN((x)+(w),(m)->wx+(m)->ww) - MAX((x),(m)->wx)) \
47 * MAX(0, MIN((y)+(h),(m)->wy+(m)->wh) - MAX((y),(m)->wy)))
48 #define ISVISIBLE(C) ((C->tags & C->mon->tagset[C->mon->seltags]))
49 #define LENGTH(X) (sizeof X / sizeof X[0])
50 #define MAX(A, B) ((A) > (B) ? (A) : (B))
51 #define MIN(A, B) ((A) < (B) ? (A) : (B))
52 #define MOUSEMASK (BUTTONMASK|PointerMotionMask)
53 #define WIDTH(X) ((X)->w + 2 * (X)->bw)
54 #define HEIGHT(X) ((X)->h + 2 * (X)->bw)
55 #define TAGMASK ((1 << LENGTH(tags)) - 1)
56 #define TEXTW(X) (textnw(X, strlen(X)) + dc.font.height)
57
58 /* enums */
59 enum { CurNormal, CurResize, CurMove, CurLast }; /* cursor */
60 enum { ColBorder, ColFG, ColBG, ColLast }; /* color */
61 enum { NetSupported, NetWMName, NetWMState,
62 NetWMFullscreen, NetActiveWindow, NetWMWindowType,
63 NetWMWindowTypeDialog, NetClientList, NetLast }; /* EWMH atoms */
64 enum { WMProtocols, WMDelete, WMState, WMTakeFocus, WMLast }; /* default atoms */
65 enum { ClkTagBar, ClkLtSymbol, ClkStatusText, ClkWinTitle,
66 ClkClientWin, ClkRootWin, ClkLast }; /* clicks */
67
68 typedef union {
69 int i;
70 unsigned int ui;
71 float f;
72 const void *v;
73 } Arg;
74
75 typedef struct {
76 unsigned int click;
77 unsigned int mask;
78 unsigned int button;
79 void (*func)(const Arg *arg);
80 const Arg arg;
81 } Button;
82
83 typedef struct Monitor Monitor;
84 typedef struct Client Client;
85 struct Client {
86 char name[256];
87 float mina, maxa;
88 int x, y, w, h;
89 int oldx, oldy, oldw, oldh;
90 int basew, baseh, incw, inch, maxw, maxh, minw, minh;
91 int bw, oldbw;
92 unsigned int tags;
93 Bool isfixed, isfloating, isurgent, neverfocus, oldstate, isfullscreen;
94 Client *next;
95 Client *snext;
96 Monitor *mon;
97 Window win;
98 };
99
100 typedef struct {
101 int x, y, w, h;
102 unsigned long norm[ColLast];
103 unsigned long sel[ColLast];
104 Drawable drawable;
105 GC gc;
106 struct {
107 int ascent;
108 int descent;
109 int height;
110 XFontSet set;
111 XFontStruct *xfont;
112 } font;
113 } DC; /* draw context */
114
115 typedef struct {
116 unsigned int mod;
117 KeySym keysym;
118 void (*func)(const Arg *);
119 const Arg arg;
120 } Key;
121
122 typedef struct {
123 const char *symbol;
124 void (*arrange)(Monitor *);
125 } Layout;
126
127 struct Monitor {
128 char ltsymbol[16];
129 float mfact;
130 int nmaster;
131 int num;
132 int by; /* bar geometry */
133 int mx, my, mw, mh; /* screen size */
134 int wx, wy, ww, wh; /* window area */
135 unsigned int seltags;
136 unsigned int sellt;
137 unsigned int tagset[2];
138 Bool showbar;
139 Bool topbar;
140 Client *clients;
141 Client *sel;
142 Client *stack;
143 Monitor *next;
144 Window barwin;
145 const Layout *lt[2];
146 };
147
148 typedef struct {
149 const char *class;
150 const char *instance;
151 const char *title;
152 unsigned int tags;
153 Bool isfloating;
154 int monitor;
155 } Rule;
156
157 /* function declarations */
158 static void applyrules(Client *c);
159 static Bool applysizehints(Client *c, int *x, int *y, int *w, int *h, Bool interact);
160 static void arrange(Monitor *m);
161 static void arrangemon(Monitor *m);
162 static void attach(Client *c);
163 static void attachstack(Client *c);
164 static void buttonpress(XEvent *e);
165 static void checkotherwm(void);
166 static void cleanup(void);
167 static void cleanupmon(Monitor *mon);
168 static void clearurgent(Client *c);
169 static void clientmessage(XEvent *e);
170 static void configure(Client *c);
171 static void configurenotify(XEvent *e);
172 static void configurerequest(XEvent *e);
173 static Monitor *createmon(void);
174 static void destroynotify(XEvent *e);
175 static void detach(Client *c);
176 static void detachstack(Client *c);
177 static void die(const char *errstr, ...);
178 static Monitor *dirtomon(int dir);
179 static void drawbar(Monitor *m);
180 static void drawbars(void);
181 static void drawsquare(Bool filled, Bool empty, Bool invert, unsigned long col[ColLast]);
182 static void drawtext(const char *text, unsigned long col[ColLast], Bool invert);
183 static void enternotify(XEvent *e);
184 static void expose(XEvent *e);
185 static void focus(Client *c);
186 static void focusin(XEvent *e);
187 static void focusmon(const Arg *arg);
188 static void focusstack(const Arg *arg);
189 static unsigned long getcolor(const char *colstr);
190 static Bool getrootptr(int *x, int *y);
191 static long getstate(Window w);
192 static Bool gettextprop(Window w, Atom atom, char *text, unsigned int size);
193 static void grabbuttons(Client *c, Bool focused);
194 static void grabkeys(void);
195 static void incnmaster(const Arg *arg);
196 static void initfont(const char *fontstr);
197 static void keypress(XEvent *e);
198 static void killclient(const Arg *arg);
199 static void manage(Window w, XWindowAttributes *wa);
200 static void mappingnotify(XEvent *e);
201 static void maprequest(XEvent *e);
202 static void monocle(Monitor *m);
203 static void motionnotify(XEvent *e);
204 static void movemouse(const Arg *arg);
205 static Client *nexttiled(Client *c);
206 static void pop(Client *);
207 static void propertynotify(XEvent *e);
208 static void quit(const Arg *arg);
209 static Monitor *recttomon(int x, int y, int w, int h);
210 static void resize(Client *c, int x, int y, int w, int h, Bool interact);
211 static void resizeclient(Client *c, int x, int y, int w, int h);
212 static void resizemouse(const Arg *arg);
213 static void restack(Monitor *m);
214 static void run(void);
215 static void scan(void);
216 static Bool sendevent(Client *c, Atom proto);
217 static void sendmon(Client *c, Monitor *m);
218 static void setclientstate(Client *c, long state);
219 static void setfocus(Client *c);
220 static void setfullscreen(Client *c, Bool fullscreen);
221 static void setlayout(const Arg *arg);
222 static void setmfact(const Arg *arg);
223 static void setup(void);
224 static void showhide(Client *c);
225 static void sigchld(int unused);
226 static void spawn(const Arg *arg);
227 static void tag(const Arg *arg);
228 static void tagmon(const Arg *arg);
229 static int textnw(const char *text, unsigned int len);
230 static void tile(Monitor *);
231 static void togglebar(const Arg *arg);
232 static void togglefloating(const Arg *arg);
233 static void toggletag(const Arg *arg);
234 static void toggleview(const Arg *arg);
235 static void unfocus(Client *c, Bool setfocus);
236 static void unmanage(Client *c, Bool destroyed);
237 static void unmapnotify(XEvent *e);
238 static Bool updategeom(void);
239 static void updatebarpos(Monitor *m);
240 static void updatebars(void);
241 static void updateclientlist(void);
242 static void updatenumlockmask(void);
243 static void updatesizehints(Client *c);
244 static void updatestatus(void);
245 static void updatewindowtype(Client *c);
246 static void updatetitle(Client *c);
247 static void updatewmhints(Client *c);
248 static void view(const Arg *arg);
249 static Client *wintoclient(Window w);
250 static Monitor *wintomon(Window w);
251 static int xerror(Display *dpy, XErrorEvent *ee);
252 static int xerrordummy(Display *dpy, XErrorEvent *ee);
253 static int xerrorstart(Display *dpy, XErrorEvent *ee);
254 static void zoom(const Arg *arg);
255
256 /* variables */
257 static const char broken[] = "broken";
258 static char stext[256];
259 static int screen;
260 static int sw, sh; /* X display screen geometry width, height */
261 static int bh, blw = 0; /* bar geometry */
262 static int (*xerrorxlib)(Display *, XErrorEvent *);
263 static unsigned int numlockmask = 0;
264 static void (*handler[LASTEvent]) (XEvent *) = {
265 [ButtonPress] = buttonpress,
266 [ClientMessage] = clientmessage,
267 [ConfigureRequest] = configurerequest,
268 [ConfigureNotify] = configurenotify,
269 [DestroyNotify] = destroynotify,
270 [EnterNotify] = enternotify,
271 [Expose] = expose,
272 [FocusIn] = focusin,
273 [KeyPress] = keypress,
274 [MappingNotify] = mappingnotify,
275 [MapRequest] = maprequest,
276 [MotionNotify] = motionnotify,
277 [PropertyNotify] = propertynotify,
278 [UnmapNotify] = unmapnotify
279 };
280 static Atom wmatom[WMLast], netatom[NetLast];
281 static Bool running = True;
282 static Cursor cursor[CurLast];
283 static Display *dpy;
284 static DC dc;
285 static Monitor *mons = NULL, *selmon = NULL;
286 static Window root;
287
288 /* configuration, allows nested code to access above variables */
289 #include "config.h"
290
291 /* compile-time check if all tags fit into an unsigned int bit array. */
292 struct NumTags { char limitexceeded[LENGTH(tags) > 31 ? -1 : 1]; };
293
294 /* function implementations */
295 void
296 applyrules(Client *c) {
297 const char *class, *instance;
298 unsigned int i;
299 const Rule *r;
300 Monitor *m;
301 XClassHint ch = { NULL, NULL };
302
303 /* rule matching */
304 c->isfloating = c->tags = 0;
305 XGetClassHint(dpy, c->win, &ch);
306 class = ch.res_class ? ch.res_class : broken;
307 instance = ch.res_name ? ch.res_name : broken;
308
309 for(i = 0; i < LENGTH(rules); i++) {
310 r = &rules[i];
311 if((!r->title || strstr(c->name, r->title))
312 && (!r->class || strstr(class, r->class))
313 && (!r->instance || strstr(instance, r->instance)))
314 {
315 c->isfloating = r->isfloating;
316 c->tags |= r->tags;
317 for(m = mons; m && m->num != r->monitor; m = m->next);
318 if(m)
319 c->mon = m;
320 }
321 }
322 if(ch.res_class)
323 XFree(ch.res_class);
324 if(ch.res_name)
325 XFree(ch.res_name);
326 c->tags = c->tags & TAGMASK ? c->tags & TAGMASK : c->mon->tagset[c->mon->seltags];
327 }
328
329 Bool
330 applysizehints(Client *c, int *x, int *y, int *w, int *h, Bool interact) {
331 Bool baseismin;
332 Monitor *m = c->mon;
333
334 /* set minimum possible */
335 *w = MAX(1, *w);
336 *h = MAX(1, *h);
337 if(interact) {
338 if(*x > sw)
339 *x = sw - WIDTH(c);
340 if(*y > sh)
341 *y = sh - HEIGHT(c);
342 if(*x + *w + 2 * c->bw < 0)
343 *x = 0;
344 if(*y + *h + 2 * c->bw < 0)
345 *y = 0;
346 }
347 else {
348 if(*x >= m->wx + m->ww)
349 *x = m->wx + m->ww - WIDTH(c);
350 if(*y >= m->wy + m->wh)
351 *y = m->wy + m->wh - HEIGHT(c);
352 if(*x + *w + 2 * c->bw <= m->wx)
353 *x = m->wx;
354 if(*y + *h + 2 * c->bw <= m->wy)
355 *y = m->wy;
356 }
357 if(*h < bh)
358 *h = bh;
359 if(*w < bh)
360 *w = bh;
361 if(resizehints || c->isfloating || !c->mon->lt[c->mon->sellt]->arrange) {
362 /* see last two sentences in ICCCM 4.1.2.3 */
363 baseismin = c->basew == c->minw && c->baseh == c->minh;
364 if(!baseismin) { /* temporarily remove base dimensions */
365 *w -= c->basew;
366 *h -= c->baseh;
367 }
368 /* adjust for aspect limits */
369 if(c->mina > 0 && c->maxa > 0) {
370 if(c->maxa < (float)*w / *h)
371 *w = *h * c->maxa + 0.5;
372 else if(c->mina < (float)*h / *w)
373 *h = *w * c->mina + 0.5;
374 }
375 if(baseismin) { /* increment calculation requires this */
376 *w -= c->basew;
377 *h -= c->baseh;
378 }
379 /* adjust for increment value */
380 if(c->incw)
381 *w -= *w % c->incw;
382 if(c->inch)
383 *h -= *h % c->inch;
384 /* restore base dimensions */
385 *w = MAX(*w + c->basew, c->minw);
386 *h = MAX(*h + c->baseh, c->minh);
387 if(c->maxw)
388 *w = MIN(*w, c->maxw);
389 if(c->maxh)
390 *h = MIN(*h, c->maxh);
391 }
392 return *x != c->x || *y != c->y || *w != c->w || *h != c->h;
393 }
394
395 void
396 arrange(Monitor *m) {
397 if(m)
398 showhide(m->stack);
399 else for(m = mons; m; m = m->next)
400 showhide(m->stack);
401 if(m) {
402 arrangemon(m);
403 restack(m);
404 } else for(m = mons; m; m = m->next)
405 arrangemon(m);
406 }
407
408 void
409 arrangemon(Monitor *m) {
410 strncpy(m->ltsymbol, m->lt[m->sellt]->symbol, sizeof m->ltsymbol);
411 if(m->lt[m->sellt]->arrange)
412 m->lt[m->sellt]->arrange(m);
413 }
414
415 void
416 attach(Client *c) {
417 c->next = c->mon->clients;
418 c->mon->clients = c;
419 }
420
421 void
422 attachstack(Client *c) {
423 c->snext = c->mon->stack;
424 c->mon->stack = c;
425 }
426
427 void
428 buttonpress(XEvent *e) {
429 unsigned int i, x, click;
430 Arg arg = {0};
431 Client *c;
432 Monitor *m;
433 XButtonPressedEvent *ev = &e->xbutton;
434
435 click = ClkRootWin;
436 /* focus monitor if necessary */
437 if((m = wintomon(ev->window)) && m != selmon) {
438 unfocus(selmon->sel, True);
439 selmon = m;
440 focus(NULL);
441 }
442 if(ev->window == selmon->barwin) {
443 i = x = 0;
444 do
445 x += TEXTW(tags[i]);
446 while(ev->x >= x && ++i < LENGTH(tags));
447 if(i < LENGTH(tags)) {
448 click = ClkTagBar;
449 arg.ui = 1 << i;
450 }
451 else if(ev->x < x + blw)
452 click = ClkLtSymbol;
453 else if(ev->x > selmon->ww - TEXTW(stext))
454 click = ClkStatusText;
455 else
456 click = ClkWinTitle;
457 }
458 else if((c = wintoclient(ev->window))) {
459 focus(c);
460 click = ClkClientWin;
461 }
462 for(i = 0; i < LENGTH(buttons); i++)
463 if(click == buttons[i].click && buttons[i].func && buttons[i].button == ev->button
464 && CLEANMASK(buttons[i].mask) == CLEANMASK(ev->state))
465 buttons[i].func(click == ClkTagBar && buttons[i].arg.i == 0 ? &arg : &buttons[i].arg);
466 }
467
468 void
469 checkotherwm(void) {
470 xerrorxlib = XSetErrorHandler(xerrorstart);
471 /* this causes an error if some other window manager is running */
472 XSelectInput(dpy, DefaultRootWindow(dpy), SubstructureRedirectMask);
473 XSync(dpy, False);
474 XSetErrorHandler(xerror);
475 XSync(dpy, False);
476 }
477
478 void
479 cleanup(void) {
480 Arg a = {.ui = ~0};
481 Layout foo = { "", NULL };
482 Monitor *m;
483
484 view(&a);
485 selmon->lt[selmon->sellt] = &foo;
486 for(m = mons; m; m = m->next)
487 while(m->stack)
488 unmanage(m->stack, False);
489 if(dc.font.set)
490 XFreeFontSet(dpy, dc.font.set);
491 else
492 XFreeFont(dpy, dc.font.xfont);
493 XUngrabKey(dpy, AnyKey, AnyModifier, root);
494 XFreePixmap(dpy, dc.drawable);
495 XFreeGC(dpy, dc.gc);
496 XFreeCursor(dpy, cursor[CurNormal]);
497 XFreeCursor(dpy, cursor[CurResize]);
498 XFreeCursor(dpy, cursor[CurMove]);
499 while(mons)
500 cleanupmon(mons);
501 XSync(dpy, False);
502 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
503 XDeleteProperty(dpy, root, netatom[NetActiveWindow]);
504 }
505
506 void
507 cleanupmon(Monitor *mon) {
508 Monitor *m;
509
510 if(mon == mons)
511 mons = mons->next;
512 else {
513 for(m = mons; m && m->next != mon; m = m->next);
514 m->next = mon->next;
515 }
516 XUnmapWindow(dpy, mon->barwin);
517 XDestroyWindow(dpy, mon->barwin);
518 free(mon);
519 }
520
521 void
522 clearurgent(Client *c) {
523 XWMHints *wmh;
524
525 c->isurgent = False;
526 if(!(wmh = XGetWMHints(dpy, c->win)))
527 return;
528 wmh->flags &= ~XUrgencyHint;
529 XSetWMHints(dpy, c->win, wmh);
530 XFree(wmh);
531 }
532
533 void
534 clientmessage(XEvent *e) {
535 XClientMessageEvent *cme = &e->xclient;
536 Client *c = wintoclient(cme->window);
537
538 if(!c)
539 return;
540 if(cme->message_type == netatom[NetWMState]) {
541 if(cme->data.l[1] == netatom[NetWMFullscreen] || cme->data.l[2] == netatom[NetWMFullscreen])
542 setfullscreen(c, (cme->data.l[0] == 1 /* _NET_WM_STATE_ADD */
543 || (cme->data.l[0] == 2 /* _NET_WM_STATE_TOGGLE */ && !c->isfullscreen)));
544 }
545 else if(cme->message_type == netatom[NetActiveWindow]) {
546 if(!ISVISIBLE(c)) {
547 c->mon->seltags ^= 1;
548 c->mon->tagset[c->mon->seltags] = c->tags;
549 }
550 pop(c);
551 }
552 }
553
554 void
555 configure(Client *c) {
556 XConfigureEvent ce;
557
558 ce.type = ConfigureNotify;
559 ce.display = dpy;
560 ce.event = c->win;
561 ce.window = c->win;
562 ce.x = c->x;
563 ce.y = c->y;
564 ce.width = c->w;
565 ce.height = c->h;
566 ce.border_width = c->bw;
567 ce.above = None;
568 ce.override_redirect = False;
569 XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&ce);
570 }
571
572 void
573 configurenotify(XEvent *e) {
574 Monitor *m;
575 XConfigureEvent *ev = &e->xconfigure;
576 Bool dirty;
577
578 if(ev->window == root) {
579 dirty = (sw != ev->width);
580 sw = ev->width;
581 sh = ev->height;
582 if(updategeom() || dirty) {
583 if(dc.drawable != 0)
584 XFreePixmap(dpy, dc.drawable);
585 dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
586 updatebars();
587 for(m = mons; m; m = m->next)
588 XMoveResizeWindow(dpy, m->barwin, m->wx, m->by, m->ww, bh);
589 focus(NULL);
590 arrange(NULL);
591 }
592 }
593 }
594
595 void
596 configurerequest(XEvent *e) {
597 Client *c;
598 Monitor *m;
599 XConfigureRequestEvent *ev = &e->xconfigurerequest;
600 XWindowChanges wc;
601
602 if((c = wintoclient(ev->window))) {
603 if(ev->value_mask & CWBorderWidth)
604 c->bw = ev->border_width;
605 else if(c->isfloating || !selmon->lt[selmon->sellt]->arrange) {
606 m = c->mon;
607 if(ev->value_mask & CWX) {
608 c->oldx = c->x;
609 c->x = m->mx + ev->x;
610 }
611 if(ev->value_mask & CWY) {
612 c->oldy = c->y;
613 c->y = m->my + ev->y;
614 }
615 if(ev->value_mask & CWWidth) {
616 c->oldw = c->w;
617 c->w = ev->width;
618 }
619 if(ev->value_mask & CWHeight) {
620 c->oldh = c->h;
621 c->h = ev->height;
622 }
623 if((c->x + c->w) > m->mx + m->mw && c->isfloating)
624 c->x = m->mx + (m->mw / 2 - WIDTH(c) / 2); /* center in x direction */
625 if((c->y + c->h) > m->my + m->mh && c->isfloating)
626 c->y = m->my + (m->mh / 2 - HEIGHT(c) / 2); /* center in y direction */
627 if((ev->value_mask & (CWX|CWY)) && !(ev->value_mask & (CWWidth|CWHeight)))
628 configure(c);
629 if(ISVISIBLE(c))
630 XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
631 }
632 else
633 configure(c);
634 }
635 else {
636 wc.x = ev->x;
637 wc.y = ev->y;
638 wc.width = ev->width;
639 wc.height = ev->height;
640 wc.border_width = ev->border_width;
641 wc.sibling = ev->above;
642 wc.stack_mode = ev->detail;
643 XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
644 }
645 XSync(dpy, False);
646 }
647
648 Monitor *
649 createmon(void) {
650 Monitor *m;
651
652 if(!(m = (Monitor *)calloc(1, sizeof(Monitor))))
653 die("fatal: could not malloc() %u bytes\n", sizeof(Monitor));
654 m->tagset[0] = m->tagset[1] = 1;
655 m->mfact = mfact;
656 m->nmaster = nmaster;
657 m->showbar = showbar;
658 m->topbar = topbar;
659 m->lt[0] = &layouts[0];
660 m->lt[1] = &layouts[1 % LENGTH(layouts)];
661 strncpy(m->ltsymbol, layouts[0].symbol, sizeof m->ltsymbol);
662 return m;
663 }
664
665 void
666 destroynotify(XEvent *e) {
667 Client *c;
668 XDestroyWindowEvent *ev = &e->xdestroywindow;
669
670 if((c = wintoclient(ev->window)))
671 unmanage(c, True);
672 }
673
674 void
675 detach(Client *c) {
676 Client **tc;
677
678 for(tc = &c->mon->clients; *tc && *tc != c; tc = &(*tc)->next);
679 *tc = c->next;
680 }
681
682 void
683 detachstack(Client *c) {
684 Client **tc, *t;
685
686 for(tc = &c->mon->stack; *tc && *tc != c; tc = &(*tc)->snext);
687 *tc = c->snext;
688
689 if(c == c->mon->sel) {
690 for(t = c->mon->stack; t && !ISVISIBLE(t); t = t->snext);
691 c->mon->sel = t;
692 }
693 }
694
695 void
696 die(const char *errstr, ...) {
697 va_list ap;
698
699 va_start(ap, errstr);
700 vfprintf(stderr, errstr, ap);
701 va_end(ap);
702 exit(EXIT_FAILURE);
703 }
704
705 Monitor *
706 dirtomon(int dir) {
707 Monitor *m = NULL;
708
709 if(dir > 0) {
710 if(!(m = selmon->next))
711 m = mons;
712 }
713 else if(selmon == mons)
714 for(m = mons; m->next; m = m->next);
715 else
716 for(m = mons; m->next != selmon; m = m->next);
717 return m;
718 }
719
720 void
721 drawbar(Monitor *m) {
722 int x;
723 unsigned int i, occ = 0, urg = 0;
724 unsigned long *col;
725 Client *c;
726
727 for(c = m->clients; c; c = c->next) {
728 occ |= c->tags;
729 if(c->isurgent)
730 urg |= c->tags;
731 }
732 dc.x = 0;
733 for(i = 0; i < LENGTH(tags); i++) {
734 dc.w = TEXTW(tags[i]);
735 col = m->tagset[m->seltags] & 1 << i ? dc.sel : dc.norm;
736 drawtext(tags[i], col, urg & 1 << i);
737 drawsquare(m == selmon && selmon->sel && selmon->sel->tags & 1 << i,
738 occ & 1 << i, urg & 1 << i, col);
739 dc.x += dc.w;
740 }
741 dc.w = blw = TEXTW(m->ltsymbol);
742 drawtext(m->ltsymbol, dc.norm, False);
743 dc.x += dc.w;
744 x = dc.x;
745 if(m == selmon) { /* status is only drawn on selected monitor */
746 dc.w = TEXTW(stext);
747 dc.x = m->ww - dc.w;
748 if(dc.x < x) {
749 dc.x = x;
750 dc.w = m->ww - x;
751 }
752 drawtext(stext, dc.norm, False);
753 }
754 else
755 dc.x = m->ww;
756 if((dc.w = dc.x - x) > bh) {
757 dc.x = x;
758 if(m->sel) {
759 col = m == selmon ? dc.sel : dc.norm;
760 drawtext(m->sel->name, col, False);
761 drawsquare(m->sel->isfixed, m->sel->isfloating, False, col);
762 }
763 else
764 drawtext(NULL, dc.norm, False);
765 }
766 XCopyArea(dpy, dc.drawable, m->barwin, dc.gc, 0, 0, m->ww, bh, 0, 0);
767 XSync(dpy, False);
768 }
769
770 void
771 drawbars(void) {
772 Monitor *m;
773
774 for(m = mons; m; m = m->next)
775 drawbar(m);
776 }
777
778 void
779 drawsquare(Bool filled, Bool empty, Bool invert, unsigned long col[ColLast]) {
780 int x;
781
782 XSetForeground(dpy, dc.gc, col[invert ? ColBG : ColFG]);
783 x = (dc.font.ascent + dc.font.descent + 2) / 4;
784 if(filled)
785 XFillRectangle(dpy, dc.drawable, dc.gc, dc.x+1, dc.y+1, x+1, x+1);
786 else if(empty)
787 XDrawRectangle(dpy, dc.drawable, dc.gc, dc.x+1, dc.y+1, x, x);
788 }
789
790 void
791 drawtext(const char *text, unsigned long col[ColLast], Bool invert) {
792 char buf[256];
793 int i, x, y, h, len, olen;
794
795 XSetForeground(dpy, dc.gc, col[invert ? ColFG : ColBG]);
796 XFillRectangle(dpy, dc.drawable, dc.gc, dc.x, dc.y, dc.w, dc.h);
797 if(!text)
798 return;
799 olen = strlen(text);
800 h = dc.font.ascent + dc.font.descent;
801 y = dc.y + (dc.h / 2) - (h / 2) + dc.font.ascent;
802 x = dc.x + (h / 2);
803 /* shorten text if necessary */
804 for(len = MIN(olen, sizeof buf); len && textnw(text, len) > dc.w - h; len--);
805 if(!len)
806 return;
807 memcpy(buf, text, len);
808 if(len < olen)
809 for(i = len; i && i > len - 3; buf[--i] = '.');
810 XSetForeground(dpy, dc.gc, col[invert ? ColBG : ColFG]);
811 if(dc.font.set)
812 XmbDrawString(dpy, dc.drawable, dc.font.set, dc.gc, x, y, buf, len);
813 else
814 XDrawString(dpy, dc.drawable, dc.gc, x, y, buf, len);
815 }
816
817 void
818 enternotify(XEvent *e) {
819 Client *c;
820 Monitor *m;
821 XCrossingEvent *ev = &e->xcrossing;
822
823 if((ev->mode != NotifyNormal || ev->detail == NotifyInferior) && ev->window != root)
824 return;
825 c = wintoclient(ev->window);
826 m = c ? c->mon : wintomon(ev->window);
827 if(m != selmon) {
828 unfocus(selmon->sel, True);
829 selmon = m;
830 }
831 else if(!c || c == selmon->sel)
832 return;
833 focus(c);
834 }
835
836 void
837 expose(XEvent *e) {
838 Monitor *m;
839 XExposeEvent *ev = &e->xexpose;
840
841 if(ev->count == 0 && (m = wintomon(ev->window)))
842 drawbar(m);
843 }
844
845 void
846 focus(Client *c) {
847 if(!c || !ISVISIBLE(c))
848 for(c = selmon->stack; c && !ISVISIBLE(c); c = c->snext);
849 /* was if(selmon->sel) */
850 if(selmon->sel && selmon->sel != c)
851 unfocus(selmon->sel, False);
852 if(c) {
853 if(c->mon != selmon)
854 selmon = c->mon;
855 if(c->isurgent)
856 clearurgent(c);
857 detachstack(c);
858 attachstack(c);
859 grabbuttons(c, True);
860 XSetWindowBorder(dpy, c->win, dc.sel[ColBorder]);
861 setfocus(c);
862 }
863 else {
864 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
865 XDeleteProperty(dpy, root, netatom[NetActiveWindow]);
866 }
867 selmon->sel = c;
868 drawbars();
869 }
870
871 void
872 focusin(XEvent *e) { /* there are some broken focus acquiring clients */
873 XFocusChangeEvent *ev = &e->xfocus;
874
875 if(selmon->sel && ev->window != selmon->sel->win)
876 setfocus(selmon->sel);
877 }
878
879 void
880 focusmon(const Arg *arg) {
881 Monitor *m;
882
883 if(!mons->next)
884 return;
885 if((m = dirtomon(arg->i)) == selmon)
886 return;
887 unfocus(selmon->sel, True);
888 selmon = m;
889 focus(NULL);
890 }
891
892 void
893 focusstack(const Arg *arg) {
894 Client *c = NULL, *i;
895
896 if(!selmon->sel)
897 return;
898 if(arg->i > 0) {
899 for(c = selmon->sel->next; c && !ISVISIBLE(c); c = c->next);
900 if(!c)
901 for(c = selmon->clients; c && !ISVISIBLE(c); c = c->next);
902 }
903 else {
904 for(i = selmon->clients; i != selmon->sel; i = i->next)
905 if(ISVISIBLE(i))
906 c = i;
907 if(!c)
908 for(; i; i = i->next)
909 if(ISVISIBLE(i))
910 c = i;
911 }
912 if(c) {
913 focus(c);
914 restack(selmon);
915 }
916 }
917
918 Atom
919 getatomprop(Client *c, Atom prop) {
920 int di;
921 unsigned long dl;
922 unsigned char *p = NULL;
923 Atom da, atom = None;
924
925 if(XGetWindowProperty(dpy, c->win, prop, 0L, sizeof atom, False, XA_ATOM,
926 &da, &di, &dl, &dl, &p) == Success && p) {
927 atom = *(Atom *)p;
928 XFree(p);
929 }
930 return atom;
931 }
932
933 unsigned long
934 getcolor(const char *colstr) {
935 Colormap cmap = DefaultColormap(dpy, screen);
936 XColor color;
937
938 if(!XAllocNamedColor(dpy, cmap, colstr, &color, &color))
939 die("error, cannot allocate color '%s'\n", colstr);
940 return color.pixel;
941 }
942
943 Bool
944 getrootptr(int *x, int *y) {
945 int di;
946 unsigned int dui;
947 Window dummy;
948
949 return XQueryPointer(dpy, root, &dummy, &dummy, x, y, &di, &di, &dui);
950 }
951
952 long
953 getstate(Window w) {
954 int format;
955 long result = -1;
956 unsigned char *p = NULL;
957 unsigned long n, extra;
958 Atom real;
959
960 if(XGetWindowProperty(dpy, w, wmatom[WMState], 0L, 2L, False, wmatom[WMState],
961 &real, &format, &n, &extra, (unsigned char **)&p) != Success)
962 return -1;
963 if(n != 0)
964 result = *p;
965 XFree(p);
966 return result;
967 }
968
969 Bool
970 gettextprop(Window w, Atom atom, char *text, unsigned int size) {
971 char **list = NULL;
972 int n;
973 XTextProperty name;
974
975 if(!text || size == 0)
976 return False;
977 text[0] = '\0';
978 XGetTextProperty(dpy, w, &name, atom);
979 if(!name.nitems)
980 return False;
981 if(name.encoding == XA_STRING)
982 strncpy(text, (char *)name.value, size - 1);
983 else {
984 if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success && n > 0 && *list) {
985 strncpy(text, *list, size - 1);
986 XFreeStringList(list);
987 }
988 }
989 text[size - 1] = '\0';
990 XFree(name.value);
991 return True;
992 }
993
994 void
995 grabbuttons(Client *c, Bool focused) {
996 updatenumlockmask();
997 {
998 unsigned int i, j;
999 unsigned int modifiers[] = { 0, LockMask, numlockmask, numlockmask|LockMask };
1000 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
1001 if(focused) {
1002 for(i = 0; i < LENGTH(buttons); i++)
1003 if(buttons[i].click == ClkClientWin)
1004 for(j = 0; j < LENGTH(modifiers); j++)
1005 XGrabButton(dpy, buttons[i].button,
1006 buttons[i].mask | modifiers[j],
1007 c->win, False, BUTTONMASK,
1008 GrabModeAsync, GrabModeSync, None, None);
1009 }
1010 else
1011 XGrabButton(dpy, AnyButton, AnyModifier, c->win, False,
1012 BUTTONMASK, GrabModeAsync, GrabModeSync, None, None);
1013 }
1014 }
1015
1016 void
1017 grabkeys(void) {
1018 updatenumlockmask();
1019 {
1020 unsigned int i, j;
1021 unsigned int modifiers[] = { 0, LockMask, numlockmask, numlockmask|LockMask };
1022 KeyCode code;
1023
1024 XUngrabKey(dpy, AnyKey, AnyModifier, root);
1025 for(i = 0; i < LENGTH(keys); i++)
1026 if((code = XKeysymToKeycode(dpy, keys[i].keysym)))
1027 for(j = 0; j < LENGTH(modifiers); j++)
1028 XGrabKey(dpy, code, keys[i].mod | modifiers[j], root,
1029 True, GrabModeAsync, GrabModeAsync);
1030 }
1031 }
1032
1033 void
1034 incnmaster(const Arg *arg) {
1035 selmon->nmaster = MAX(selmon->nmaster + arg->i, 0);
1036 arrange(selmon);
1037 }
1038
1039 void
1040 initfont(const char *fontstr) {
1041 char *def, **missing;
1042 int n;
1043
1044 dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
1045 if(missing) {
1046 while(n--)
1047 fprintf(stderr, "dwm: missing fontset: %s\n", missing[n]);
1048 XFreeStringList(missing);
1049 }
1050 if(dc.font.set) {
1051 XFontStruct **xfonts;
1052 char **font_names;
1053
1054 dc.font.ascent = dc.font.descent = 0;
1055 XExtentsOfFontSet(dc.font.set);
1056 n = XFontsOfFontSet(dc.font.set, &xfonts, &font_names);
1057 while(n--) {
1058 dc.font.ascent = MAX(dc.font.ascent, (*xfonts)->ascent);
1059 dc.font.descent = MAX(dc.font.descent,(*xfonts)->descent);
1060 xfonts++;
1061 }
1062 }
1063 else {
1064 if(!(dc.font.xfont = XLoadQueryFont(dpy, fontstr))
1065 && !(dc.font.xfont = XLoadQueryFont(dpy, "fixed")))
1066 die("error, cannot load font: '%s'\n", fontstr);
1067 dc.font.ascent = dc.font.xfont->ascent;
1068 dc.font.descent = dc.font.xfont->descent;
1069 }
1070 dc.font.height = dc.font.ascent + dc.font.descent;
1071 }
1072
1073 #ifdef XINERAMA
1074 static Bool
1075 isuniquegeom(XineramaScreenInfo *unique, size_t n, XineramaScreenInfo *info) {
1076 while(n--)
1077 if(unique[n].x_org == info->x_org && unique[n].y_org == info->y_org
1078 && unique[n].width == info->width && unique[n].height == info->height)
1079 return False;
1080 return True;
1081 }
1082 #endif /* XINERAMA */
1083
1084 void
1085 keypress(XEvent *e) {
1086 unsigned int i;
1087 KeySym keysym;
1088 XKeyEvent *ev;
1089
1090 ev = &e->xkey;
1091 keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
1092 for(i = 0; i < LENGTH(keys); i++)
1093 if(keysym == keys[i].keysym
1094 && CLEANMASK(keys[i].mod) == CLEANMASK(ev->state)
1095 && keys[i].func)
1096 keys[i].func(&(keys[i].arg));
1097 }
1098
1099 void
1100 killclient(const Arg *arg) {
1101 if(!selmon->sel)
1102 return;
1103 if(!sendevent(selmon->sel, wmatom[WMDelete])) {
1104 XGrabServer(dpy);
1105 XSetErrorHandler(xerrordummy);
1106 XSetCloseDownMode(dpy, DestroyAll);
1107 XKillClient(dpy, selmon->sel->win);
1108 XSync(dpy, False);
1109 XSetErrorHandler(xerror);
1110 XUngrabServer(dpy);
1111 }
1112 }
1113
1114 void
1115 manage(Window w, XWindowAttributes *wa) {
1116 Client *c, *t = NULL;
1117 Window trans = None;
1118 XWindowChanges wc;
1119
1120 if(!(c = calloc(1, sizeof(Client))))
1121 die("fatal: could not malloc() %u bytes\n", sizeof(Client));
1122 c->win = w;
1123 updatetitle(c);
1124 if(XGetTransientForHint(dpy, w, &trans) && (t = wintoclient(trans))) {
1125 c->mon = t->mon;
1126 c->tags = t->tags;
1127 }
1128 else {
1129 c->mon = selmon;
1130 applyrules(c);
1131 }
1132 /* geometry */
1133 c->x = c->oldx = wa->x;
1134 c->y = c->oldy = wa->y;
1135 c->w = c->oldw = wa->width;
1136 c->h = c->oldh = wa->height;
1137 c->oldbw = wa->border_width;
1138
1139 if(c->x + WIDTH(c) > c->mon->mx + c->mon->mw)
1140 c->x = c->mon->mx + c->mon->mw - WIDTH(c);
1141 if(c->y + HEIGHT(c) > c->mon->my + c->mon->mh)
1142 c->y = c->mon->my + c->mon->mh - HEIGHT(c);
1143 c->x = MAX(c->x, c->mon->mx);
1144 /* only fix client y-offset, if the client center might cover the bar */
1145 c->y = MAX(c->y, ((c->mon->by == c->mon->my) && (c->x + (c->w / 2) >= c->mon->wx)
1146 && (c->x + (c->w / 2) < c->mon->wx + c->mon->ww)) ? bh : c->mon->my);
1147 c->bw = borderpx;
1148
1149 wc.border_width = c->bw;
1150 XConfigureWindow(dpy, w, CWBorderWidth, &wc);
1151 XSetWindowBorder(dpy, w, dc.norm[ColBorder]);
1152 configure(c); /* propagates border_width, if size doesn't change */
1153 updatewindowtype(c);
1154 updatesizehints(c);
1155 updatewmhints(c);
1156 XSelectInput(dpy, w, EnterWindowMask|FocusChangeMask|PropertyChangeMask|StructureNotifyMask);
1157 grabbuttons(c, False);
1158 if(!c->isfloating)
1159 c->isfloating = c->oldstate = trans != None || c->isfixed;
1160 if(c->isfloating)
1161 XRaiseWindow(dpy, c->win);
1162 attach(c);
1163 attachstack(c);
1164 XChangeProperty(dpy, root, netatom[NetClientList], XA_WINDOW, 32, PropModeAppend,
1165 (unsigned char *) &(c->win), 1);
1166 XMoveResizeWindow(dpy, c->win, c->x + 2 * sw, c->y, c->w, c->h); /* some windows require this */
1167 setclientstate(c, NormalState);
1168 if (c->mon == selmon)
1169 unfocus(selmon->sel, False);
1170 c->mon->sel = c;
1171 arrange(c->mon);
1172 XMapWindow(dpy, c->win);
1173 focus(NULL);
1174 }
1175
1176 void
1177 mappingnotify(XEvent *e) {
1178 XMappingEvent *ev = &e->xmapping;
1179
1180 XRefreshKeyboardMapping(ev);
1181 if(ev->request == MappingKeyboard)
1182 grabkeys();
1183 }
1184
1185 void
1186 maprequest(XEvent *e) {
1187 static XWindowAttributes wa;
1188 XMapRequestEvent *ev = &e->xmaprequest;
1189
1190 if(!XGetWindowAttributes(dpy, ev->window, &wa))
1191 return;
1192 if(wa.override_redirect)
1193 return;
1194 if(!wintoclient(ev->window))
1195 manage(ev->window, &wa);
1196 }
1197
1198 void
1199 monocle(Monitor *m) {
1200 unsigned int n = 0;
1201 Client *c;
1202
1203 for(c = m->clients; c; c = c->next)
1204 if(ISVISIBLE(c))
1205 n++;
1206 if(n > 0) /* override layout symbol */
1207 snprintf(m->ltsymbol, sizeof m->ltsymbol, "[%d]", n);
1208 for(c = nexttiled(m->clients); c; c = nexttiled(c->next))
1209 resize(c, m->wx, m->wy, m->ww - 2 * c->bw, m->wh - 2 * c->bw, False);
1210 }
1211
1212 void
1213 motionnotify(XEvent *e) {
1214 static Monitor *mon = NULL;
1215 Monitor *m;
1216 XMotionEvent *ev = &e->xmotion;
1217
1218 if(ev->window != root)
1219 return;
1220 if((m = recttomon(ev->x_root, ev->y_root, 1, 1)) != mon && mon) {
1221 unfocus(selmon->sel, True);
1222 selmon = m;
1223 focus(NULL);
1224 }
1225 mon = m;
1226 }
1227
1228 void
1229 movemouse(const Arg *arg) {
1230 int x, y, ocx, ocy, nx, ny;
1231 Client *c;
1232 Monitor *m;
1233 XEvent ev;
1234
1235 if(!(c = selmon->sel))
1236 return;
1237 restack(selmon);
1238 ocx = c->x;
1239 ocy = c->y;
1240 if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
1241 None, cursor[CurMove], CurrentTime) != GrabSuccess)
1242 return;
1243 if(!getrootptr(&x, &y))
1244 return;
1245 do {
1246 XMaskEvent(dpy, MOUSEMASK|ExposureMask|SubstructureRedirectMask, &ev);
1247 switch(ev.type) {
1248 case ConfigureRequest:
1249 case Expose:
1250 case MapRequest:
1251 handler[ev.type](&ev);
1252 break;
1253 case MotionNotify:
1254 nx = ocx + (ev.xmotion.x - x);
1255 ny = ocy + (ev.xmotion.y - y);
1256 if(nx >= selmon->wx && nx <= selmon->wx + selmon->ww
1257 && ny >= selmon->wy && ny <= selmon->wy + selmon->wh) {
1258 if(abs(selmon->wx - nx) < snap)
1259 nx = selmon->wx;
1260 else if(abs((selmon->wx + selmon->ww) - (nx + WIDTH(c))) < snap)
1261 nx = selmon->wx + selmon->ww - WIDTH(c);
1262 if(abs(selmon->wy - ny) < snap)
1263 ny = selmon->wy;
1264 else if(abs((selmon->wy + selmon->wh) - (ny + HEIGHT(c))) < snap)
1265 ny = selmon->wy + selmon->wh - HEIGHT(c);
1266 if(!c->isfloating && selmon->lt[selmon->sellt]->arrange
1267 && (abs(nx - c->x) > snap || abs(ny - c->y) > snap))
1268 togglefloating(NULL);
1269 }
1270 if(!selmon->lt[selmon->sellt]->arrange || c->isfloating) {
1271 if(c->isfullscreen)
1272 setfullscreen(c, False);
1273 resize(c, nx, ny, c->w, c->h, True);
1274 }
1275 break;
1276 }
1277 } while(ev.type != ButtonRelease);
1278 XUngrabPointer(dpy, CurrentTime);
1279 if((m = recttomon(c->x, c->y, c->w, c->h)) != selmon) {
1280 sendmon(c, m);
1281 selmon = m;
1282 focus(NULL);
1283 }
1284 }
1285
1286 Client *
1287 nexttiled(Client *c) {
1288 for(; c && (c->isfloating || !ISVISIBLE(c)); c = c->next);
1289 return c;
1290 }
1291
1292 void
1293 pop(Client *c) {
1294 detach(c);
1295 attach(c);
1296 focus(c);
1297 arrange(c->mon);
1298 }
1299
1300 void
1301 propertynotify(XEvent *e) {
1302 Client *c;
1303 Window trans;
1304 XPropertyEvent *ev = &e->xproperty;
1305
1306 if((ev->window == root) && (ev->atom == XA_WM_NAME))
1307 updatestatus();
1308 else if(ev->state == PropertyDelete)
1309 return; /* ignore */
1310 else if((c = wintoclient(ev->window))) {
1311 switch(ev->atom) {
1312 default: break;
1313 case XA_WM_TRANSIENT_FOR:
1314 if(!c->isfloating && (XGetTransientForHint(dpy, c->win, &trans)) &&
1315 (c->isfloating = (wintoclient(trans)) != NULL))
1316 arrange(c->mon);
1317 break;
1318 case XA_WM_NORMAL_HINTS:
1319 updatesizehints(c);
1320 break;
1321 case XA_WM_HINTS:
1322 updatewmhints(c);
1323 drawbars();
1324 break;
1325 }
1326 if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
1327 updatetitle(c);
1328 if(c == c->mon->sel)
1329 drawbar(c->mon);
1330 }
1331 if(ev->atom == netatom[NetWMWindowType])
1332 updatewindowtype(c);
1333 }
1334 }
1335
1336 void
1337 quit(const Arg *arg) {
1338 running = False;
1339 }
1340
1341 Monitor *
1342 recttomon(int x, int y, int w, int h) {
1343 Monitor *m, *r = selmon;
1344 int a, area = 0;
1345
1346 for(m = mons; m; m = m->next)
1347 if((a = INTERSECT(x, y, w, h, m)) > area) {
1348 area = a;
1349 r = m;
1350 }
1351 return r;
1352 }
1353
1354 void
1355 resize(Client *c, int x, int y, int w, int h, Bool interact) {
1356 if(applysizehints(c, &x, &y, &w, &h, interact))
1357 resizeclient(c, x, y, w, h);
1358 }
1359
1360 void
1361 resizeclient(Client *c, int x, int y, int w, int h) {
1362 XWindowChanges wc;
1363
1364 c->oldx = c->x; c->x = wc.x = x;
1365 c->oldy = c->y; c->y = wc.y = y;
1366 c->oldw = c->w; c->w = wc.width = w;
1367 c->oldh = c->h; c->h = wc.height = h;
1368 wc.border_width = c->bw;
1369 XConfigureWindow(dpy, c->win, CWX|CWY|CWWidth|CWHeight|CWBorderWidth, &wc);
1370 configure(c);
1371 XSync(dpy, False);
1372 }
1373
1374 void
1375 resizemouse(const Arg *arg) {
1376 int ocx, ocy;
1377 int nw, nh;
1378 Client *c;
1379 Monitor *m;
1380 XEvent ev;
1381
1382 if(!(c = selmon->sel))
1383 return;
1384 restack(selmon);
1385 ocx = c->x;
1386 ocy = c->y;
1387 if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
1388 None, cursor[CurResize], CurrentTime) != GrabSuccess)
1389 return;
1390 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->bw - 1, c->h + c->bw - 1);
1391 do {
1392 XMaskEvent(dpy, MOUSEMASK|ExposureMask|SubstructureRedirectMask, &ev);
1393 switch(ev.type) {
1394 case ConfigureRequest:
1395 case Expose:
1396 case MapRequest:
1397 handler[ev.type](&ev);
1398 break;
1399 case MotionNotify:
1400 nw = MAX(ev.xmotion.x - ocx - 2 * c->bw + 1, 1);
1401 nh = MAX(ev.xmotion.y - ocy - 2 * c->bw + 1, 1);
1402 if(c->mon->wx + nw >= selmon->wx && c->mon->wx + nw <= selmon->wx + selmon->ww
1403 && c->mon->wy + nh >= selmon->wy && c->mon->wy + nh <= selmon->wy + selmon->wh)
1404 {
1405 if(!c->isfloating && selmon->lt[selmon->sellt]->arrange
1406 && (abs(nw - c->w) > snap || abs(nh - c->h) > snap))
1407 togglefloating(NULL);
1408 }
1409 if(!selmon->lt[selmon->sellt]->arrange || c->isfloating) {
1410 if(c->isfullscreen)
1411 setfullscreen(c, False);
1412 resize(c, c->x, c->y, nw, nh, True);
1413 }
1414 break;
1415 }
1416 } while(ev.type != ButtonRelease);
1417 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->bw - 1, c->h + c->bw - 1);
1418 XUngrabPointer(dpy, CurrentTime);
1419 while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
1420 if((m = recttomon(c->x, c->y, c->w, c->h)) != selmon) {
1421 sendmon(c, m);
1422 selmon = m;
1423 focus(NULL);
1424 }
1425 }
1426
1427 void
1428 restack(Monitor *m) {
1429 Client *c;
1430 XEvent ev;
1431 XWindowChanges wc;
1432
1433 drawbar(m);
1434 if(!m->sel)
1435 return;
1436 if(m->sel->isfloating || !m->lt[m->sellt]->arrange)
1437 XRaiseWindow(dpy, m->sel->win);
1438 if(m->lt[m->sellt]->arrange) {
1439 wc.stack_mode = Below;
1440 wc.sibling = m->barwin;
1441 for(c = m->stack; c; c = c->snext)
1442 if(!c->isfloating && ISVISIBLE(c)) {
1443 XConfigureWindow(dpy, c->win, CWSibling|CWStackMode, &wc);
1444 wc.sibling = c->win;
1445 }
1446 }
1447 XSync(dpy, False);
1448 while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
1449 }
1450
1451 void
1452 run(void) {
1453 XEvent ev;
1454 /* main event loop */
1455 XSync(dpy, False);
1456 while(running && !XNextEvent(dpy, &ev))
1457 if(handler[ev.type])
1458 handler[ev.type](&ev); /* call handler */
1459 }
1460
1461 void
1462 scan(void) {
1463 unsigned int i, num;
1464 Window d1, d2, *wins = NULL;
1465 XWindowAttributes wa;
1466
1467 if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
1468 for(i = 0; i < num; i++) {
1469 if(!XGetWindowAttributes(dpy, wins[i], &wa)
1470 || wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
1471 continue;
1472 if(wa.map_state == IsViewable || getstate(wins[i]) == IconicState)
1473 manage(wins[i], &wa);
1474 }
1475 for(i = 0; i < num; i++) { /* now the transients */
1476 if(!XGetWindowAttributes(dpy, wins[i], &wa))
1477 continue;
1478 if(XGetTransientForHint(dpy, wins[i], &d1)
1479 && (wa.map_state == IsViewable || getstate(wins[i]) == IconicState))
1480 manage(wins[i], &wa);
1481 }
1482 if(wins)
1483 XFree(wins);
1484 }
1485 }
1486
1487 void
1488 sendmon(Client *c, Monitor *m) {
1489 if(c->mon == m)
1490 return;
1491 unfocus(c, True);
1492 detach(c);
1493 detachstack(c);
1494 c->mon = m;
1495 c->tags = m->tagset[m->seltags]; /* assign tags of target monitor */
1496 attach(c);
1497 attachstack(c);
1498 focus(NULL);
1499 arrange(NULL);
1500 }
1501
1502 void
1503 setclientstate(Client *c, long state) {
1504 long data[] = { state, None };
1505
1506 XChangeProperty(dpy, c->win, wmatom[WMState], wmatom[WMState], 32,
1507 PropModeReplace, (unsigned char *)data, 2);
1508 }
1509
1510 Bool
1511 sendevent(Client *c, Atom proto) {
1512 int n;
1513 Atom *protocols;
1514 Bool exists = False;
1515 XEvent ev;
1516
1517 if(XGetWMProtocols(dpy, c->win, &protocols, &n)) {
1518 while(!exists && n--)
1519 exists = protocols[n] == proto;
1520 XFree(protocols);
1521 }
1522 if(exists) {
1523 ev.type = ClientMessage;
1524 ev.xclient.window = c->win;
1525 ev.xclient.message_type = wmatom[WMProtocols];
1526 ev.xclient.format = 32;
1527 ev.xclient.data.l[0] = proto;
1528 ev.xclient.data.l[1] = CurrentTime;
1529 XSendEvent(dpy, c->win, False, NoEventMask, &ev);
1530 }
1531 return exists;
1532 }
1533
1534 void
1535 setfocus(Client *c) {
1536 if(!c->neverfocus) {
1537 XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
1538 XChangeProperty(dpy, root, netatom[NetActiveWindow],
1539 XA_WINDOW, 32, PropModeReplace,
1540 (unsigned char *) &(c->win), 1);
1541 }
1542 sendevent(c, wmatom[WMTakeFocus]);
1543 }
1544
1545 void
1546 setfullscreen(Client *c, Bool fullscreen) {
1547 if(fullscreen) {
1548 XChangeProperty(dpy, c->win, netatom[NetWMState], XA_ATOM, 32,
1549 PropModeReplace, (unsigned char*)&netatom[NetWMFullscreen], 1);
1550 c->isfullscreen = True;
1551 c->oldstate = c->isfloating;
1552 c->oldbw = c->bw;
1553 c->bw = 0;
1554 c->isfloating = True;
1555 resizeclient(c, c->mon->mx, c->mon->my, c->mon->mw, c->mon->mh);
1556 XRaiseWindow(dpy, c->win);
1557 }
1558 else {
1559 XChangeProperty(dpy, c->win, netatom[NetWMState], XA_ATOM, 32,
1560 PropModeReplace, (unsigned char*)0, 0);
1561 c->isfullscreen = False;
1562 c->isfloating = c->oldstate;
1563 c->bw = c->oldbw;
1564 c->x = c->oldx;
1565 c->y = c->oldy;
1566 c->w = c->oldw;
1567 c->h = c->oldh;
1568 resizeclient(c, c->x, c->y, c->w, c->h);
1569 arrange(c->mon);
1570 }
1571 }
1572
1573 void
1574 setlayout(const Arg *arg) {
1575 if(!arg || !arg->v || arg->v != selmon->lt[selmon->sellt])
1576 selmon->sellt ^= 1;
1577 if(arg && arg->v)
1578 selmon->lt[selmon->sellt] = (Layout *)arg->v;
1579 strncpy(selmon->ltsymbol, selmon->lt[selmon->sellt]->symbol, sizeof selmon->ltsymbol);
1580 if(selmon->sel)
1581 arrange(selmon);
1582 else
1583 drawbar(selmon);
1584 }
1585
1586 /* arg > 1.0 will set mfact absolutly */
1587 void
1588 setmfact(const Arg *arg) {
1589 float f;
1590
1591 if(!arg || !selmon->lt[selmon->sellt]->arrange)
1592 return;
1593 f = arg->f < 1.0 ? arg->f + selmon->mfact : arg->f - 1.0;
1594 if(f < 0.1 || f > 0.9)
1595 return;
1596 selmon->mfact = f;
1597 arrange(selmon);
1598 }
1599
1600 void
1601 setup(void) {
1602 XSetWindowAttributes wa;
1603
1604 /* clean up any zombies immediately */
1605 sigchld(0);
1606
1607 /* init screen */
1608 screen = DefaultScreen(dpy);
1609 root = RootWindow(dpy, screen);
1610 initfont(font);
1611 sw = DisplayWidth(dpy, screen);
1612 sh = DisplayHeight(dpy, screen);
1613 bh = dc.h = dc.font.height + 2;
1614 updategeom();
1615 /* init atoms */
1616 wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
1617 wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
1618 wmatom[WMState] = XInternAtom(dpy, "WM_STATE", False);
1619 wmatom[WMTakeFocus] = XInternAtom(dpy, "WM_TAKE_FOCUS", False);
1620 netatom[NetActiveWindow] = XInternAtom(dpy, "_NET_ACTIVE_WINDOW", False);
1621 netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
1622 netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
1623 netatom[NetWMState] = XInternAtom(dpy, "_NET_WM_STATE", False);
1624 netatom[NetWMFullscreen] = XInternAtom(dpy, "_NET_WM_STATE_FULLSCREEN", False);
1625 netatom[NetWMWindowType] = XInternAtom(dpy, "_NET_WM_WINDOW_TYPE", False);
1626 netatom[NetWMWindowTypeDialog] = XInternAtom(dpy, "_NET_WM_WINDOW_TYPE_DIALOG", False);
1627 netatom[NetClientList] = XInternAtom(dpy, "_NET_CLIENT_LIST", False);
1628 /* init cursors */
1629 cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
1630 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
1631 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
1632 /* init appearance */
1633 dc.norm[ColBorder] = getcolor(normbordercolor);
1634 dc.norm[ColBG] = getcolor(normbgcolor);
1635 dc.norm[ColFG] = getcolor(normfgcolor);
1636 dc.sel[ColBorder] = getcolor(selbordercolor);
1637 dc.sel[ColBG] = getcolor(selbgcolor);
1638 dc.sel[ColFG] = getcolor(selfgcolor);
1639 dc.drawable = XCreatePixmap(dpy, root, DisplayWidth(dpy, screen), bh, DefaultDepth(dpy, screen));
1640 dc.gc = XCreateGC(dpy, root, 0, NULL);
1641 XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
1642 if(!dc.font.set)
1643 XSetFont(dpy, dc.gc, dc.font.xfont->fid);
1644 /* init bars */
1645 updatebars();
1646 updatestatus();
1647 /* EWMH support per view */
1648 XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
1649 PropModeReplace, (unsigned char *) netatom, NetLast);
1650 XDeleteProperty(dpy, root, netatom[NetClientList]);
1651 /* select for events */
1652 wa.cursor = cursor[CurNormal];
1653 wa.event_mask = SubstructureRedirectMask|SubstructureNotifyMask|ButtonPressMask|PointerMotionMask
1654 |EnterWindowMask|LeaveWindowMask|StructureNotifyMask|PropertyChangeMask;
1655 XChangeWindowAttributes(dpy, root, CWEventMask|CWCursor, &wa);
1656 XSelectInput(dpy, root, wa.event_mask);
1657 grabkeys();
1658 }
1659
1660 void
1661 showhide(Client *c) {
1662 if(!c)
1663 return;
1664 if(ISVISIBLE(c)) { /* show clients top down */
1665 XMoveWindow(dpy, c->win, c->x, c->y);
1666 if((!c->mon->lt[c->mon->sellt]->arrange || c->isfloating) && !c->isfullscreen)
1667 resize(c, c->x, c->y, c->w, c->h, False);
1668 showhide(c->snext);
1669 }
1670 else { /* hide clients bottom up */
1671 showhide(c->snext);
1672 XMoveWindow(dpy, c->win, WIDTH(c) * -2, c->y);
1673 }
1674 }
1675
1676 void
1677 sigchld(int unused) {
1678 if(signal(SIGCHLD, sigchld) == SIG_ERR)
1679 die("Can't install SIGCHLD handler");
1680 while(0 < waitpid(-1, NULL, WNOHANG));
1681 }
1682
1683 void
1684 spawn(const Arg *arg) {
1685 if(fork() == 0) {
1686 if(dpy)
1687 close(ConnectionNumber(dpy));
1688 setsid();
1689 execvp(((char **)arg->v)[0], (char **)arg->v);
1690 fprintf(stderr, "dwm: execvp %s", ((char **)arg->v)[0]);
1691 perror(" failed");
1692 exit(EXIT_SUCCESS);
1693 }
1694 }
1695
1696 void
1697 tag(const Arg *arg) {
1698 if(selmon->sel && arg->ui & TAGMASK) {
1699 selmon->sel->tags = arg->ui & TAGMASK;
1700 focus(NULL);
1701 arrange(selmon);
1702 }
1703 }
1704
1705 void
1706 tagmon(const Arg *arg) {
1707 if(!selmon->sel || !mons->next)
1708 return;
1709 sendmon(selmon->sel, dirtomon(arg->i));
1710 }
1711
1712 int
1713 textnw(const char *text, unsigned int len) {
1714 XRectangle r;
1715
1716 if(dc.font.set) {
1717 XmbTextExtents(dc.font.set, text, len, NULL, &r);
1718 return r.width;
1719 }
1720 return XTextWidth(dc.font.xfont, text, len);
1721 }
1722
1723 void
1724 tile(Monitor *m) {
1725 unsigned int i, n, h, mw, my, ty;
1726 Client *c;
1727
1728 for(n = 0, c = nexttiled(m->clients); c; c = nexttiled(c->next), n++);
1729 if(n == 0)
1730 return;
1731
1732 if(n > m->nmaster)
1733 mw = m->nmaster ? m->ww * m->mfact : 0;
1734 else
1735 mw = m->ww;
1736 for(i = my = ty = 0, c = nexttiled(m->clients); c; c = nexttiled(c->next), i++)
1737 if(i < m->nmaster) {
1738 h = (m->wh - my) / (MIN(n, m->nmaster) - i);
1739 resize(c, m->wx, m->wy + my, mw - (2*c->bw), h - (2*c->bw), False);
1740 my += HEIGHT(c);
1741 }
1742 else {
1743 h = (m->wh - ty) / (n - i);
1744 resize(c, m->wx + mw, m->wy + ty, m->ww - mw - (2*c->bw), h - (2*c->bw), False);
1745 ty += HEIGHT(c);
1746 }
1747 }
1748
1749 void
1750 togglebar(const Arg *arg) {
1751 selmon->showbar = !selmon->showbar;
1752 updatebarpos(selmon);
1753 XMoveResizeWindow(dpy, selmon->barwin, selmon->wx, selmon->by, selmon->ww, bh);
1754 arrange(selmon);
1755 }
1756
1757 void
1758 togglefloating(const Arg *arg) {
1759 if(!selmon->sel)
1760 return;
1761 selmon->sel->isfloating = !selmon->sel->isfloating || selmon->sel->isfixed;
1762 if(selmon->sel->isfloating)
1763 resize(selmon->sel, selmon->sel->x, selmon->sel->y,
1764 selmon->sel->w, selmon->sel->h, False);
1765 else if(selmon->sel->isfullscreen)
1766 setfullscreen(selmon->sel, False);
1767 arrange(selmon);
1768 }
1769
1770 void
1771 toggletag(const Arg *arg) {
1772 unsigned int newtags;
1773
1774 if(!selmon->sel)
1775 return;
1776 newtags = selmon->sel->tags ^ (arg->ui & TAGMASK);
1777 if(newtags) {
1778 selmon->sel->tags = newtags;
1779 focus(NULL);
1780 arrange(selmon);
1781 }
1782 }
1783
1784 void
1785 toggleview(const Arg *arg) {
1786 unsigned int newtagset = selmon->tagset[selmon->seltags] ^ (arg->ui & TAGMASK);
1787
1788 if(newtagset) {
1789 selmon->tagset[selmon->seltags] = newtagset;
1790 focus(NULL);
1791 arrange(selmon);
1792 }
1793 }
1794
1795 void
1796 unfocus(Client *c, Bool setfocus) {
1797 if(!c)
1798 return;
1799 grabbuttons(c, False);
1800 XSetWindowBorder(dpy, c->win, dc.norm[ColBorder]);
1801 if(setfocus) {
1802 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
1803 XDeleteProperty(dpy, root, netatom[NetActiveWindow]);
1804 }
1805 }
1806
1807 void
1808 unmanage(Client *c, Bool destroyed) {
1809 Monitor *m = c->mon;
1810 XWindowChanges wc;
1811
1812 /* The server grab construct avoids race conditions. */
1813 detach(c);
1814 detachstack(c);
1815 if(!destroyed) {
1816 wc.border_width = c->oldbw;
1817 XGrabServer(dpy);
1818 XSetErrorHandler(xerrordummy);
1819 XConfigureWindow(dpy, c->win, CWBorderWidth, &wc); /* restore border */
1820 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
1821 setclientstate(c, WithdrawnState);
1822 XSync(dpy, False);
1823 XSetErrorHandler(xerror);
1824 XUngrabServer(dpy);
1825 }
1826 free(c);
1827 focus(NULL);
1828 updateclientlist();
1829 arrange(m);
1830 }
1831
1832 void
1833 unmapnotify(XEvent *e) {
1834 Client *c;
1835 XUnmapEvent *ev = &e->xunmap;
1836
1837 if((c = wintoclient(ev->window))) {
1838 if(ev->send_event)
1839 setclientstate(c, WithdrawnState);
1840 else
1841 unmanage(c, False);
1842 }
1843 }
1844
1845 void
1846 updatebars(void) {
1847 Monitor *m;
1848 XSetWindowAttributes wa = {
1849 .override_redirect = True,
1850 .background_pixmap = ParentRelative,
1851 .event_mask = ButtonPressMask|ExposureMask
1852 };
1853 for(m = mons; m; m = m->next) {
1854 if (m->barwin)
1855 continue;
1856 m->barwin = XCreateWindow(dpy, root, m->wx, m->by, m->ww, bh, 0, DefaultDepth(dpy, screen),
1857 CopyFromParent, DefaultVisual(dpy, screen),
1858 CWOverrideRedirect|CWBackPixmap|CWEventMask, &wa);
1859 XDefineCursor(dpy, m->barwin, cursor[CurNormal]);
1860 XMapRaised(dpy, m->barwin);
1861 }
1862 }
1863
1864 void
1865 updatebarpos(Monitor *m) {
1866 m->wy = m->my;
1867 m->wh = m->mh;
1868 if(m->showbar) {
1869 m->wh -= bh;
1870 m->by = m->topbar ? m->wy : m->wy + m->wh;
1871 m->wy = m->topbar ? m->wy + bh : m->wy;
1872 }
1873 else
1874 m->by = -bh;
1875 }
1876
1877 void
1878 updateclientlist() {
1879 Client *c;
1880 Monitor *m;
1881
1882 XDeleteProperty(dpy, root, netatom[NetClientList]);
1883 for(m = mons; m; m = m->next)
1884 for(c = m->clients; c; c = c->next)
1885 XChangeProperty(dpy, root, netatom[NetClientList],
1886 XA_WINDOW, 32, PropModeAppend,
1887 (unsigned char *) &(c->win), 1);
1888 }
1889
1890 Bool
1891 updategeom(void) {
1892 Bool dirty = False;
1893
1894 #ifdef XINERAMA
1895 if(XineramaIsActive(dpy)) {
1896 int i, j, n, nn;
1897 Client *c;
1898 Monitor *m;
1899 XineramaScreenInfo *info = XineramaQueryScreens(dpy, &nn);
1900 XineramaScreenInfo *unique = NULL;
1901
1902 for(n = 0, m = mons; m; m = m->next, n++);
1903 /* only consider unique geometries as separate screens */
1904 if(!(unique = (XineramaScreenInfo *)malloc(sizeof(XineramaScreenInfo) * nn)))
1905 die("fatal: could not malloc() %u bytes\n", sizeof(XineramaScreenInfo) * nn);
1906 for(i = 0, j = 0; i < nn; i++)
1907 if(isuniquegeom(unique, j, &info[i]))
1908 memcpy(&unique[j++], &info[i], sizeof(XineramaScreenInfo));
1909 XFree(info);
1910 nn = j;
1911 if(n <= nn) {
1912 for(i = 0; i < (nn - n); i++) { /* new monitors available */
1913 for(m = mons; m && m->next; m = m->next);
1914 if(m)
1915 m->next = createmon();
1916 else
1917 mons = createmon();
1918 }
1919 for(i = 0, m = mons; i < nn && m; m = m->next, i++)
1920 if(i >= n
1921 || (unique[i].x_org != m->mx || unique[i].y_org != m->my
1922 || unique[i].width != m->mw || unique[i].height != m->mh))
1923 {
1924 dirty = True;
1925 m->num = i;
1926 m->mx = m->wx = unique[i].x_org;
1927 m->my = m->wy = unique[i].y_org;
1928 m->mw = m->ww = unique[i].width;
1929 m->mh = m->wh = unique[i].height;
1930 updatebarpos(m);
1931 }
1932 }
1933 else { /* less monitors available nn < n */
1934 for(i = nn; i < n; i++) {
1935 for(m = mons; m && m->next; m = m->next);
1936 while(m->clients) {
1937 dirty = True;
1938 c = m->clients;
1939 m->clients = c->next;
1940 detachstack(c);
1941 c->mon = mons;
1942 attach(c);
1943 attachstack(c);
1944 }
1945 if(m == selmon)
1946 selmon = mons;
1947 cleanupmon(m);
1948 }
1949 }
1950 free(unique);
1951 }
1952 else
1953 #endif /* XINERAMA */
1954 /* default monitor setup */
1955 {
1956 if(!mons)
1957 mons = createmon();
1958 if(mons->mw != sw || mons->mh != sh) {
1959 dirty = True;
1960 mons->mw = mons->ww = sw;
1961 mons->mh = mons->wh = sh;
1962 updatebarpos(mons);
1963 }
1964 }
1965 if(dirty) {
1966 selmon = mons;
1967 selmon = wintomon(root);
1968 }
1969 return dirty;
1970 }
1971
1972 void
1973 updatenumlockmask(void) {
1974 unsigned int i, j;
1975 XModifierKeymap *modmap;
1976
1977 numlockmask = 0;
1978 modmap = XGetModifierMapping(dpy);
1979 for(i = 0; i < 8; i++)
1980 for(j = 0; j < modmap->max_keypermod; j++)
1981 if(modmap->modifiermap[i * modmap->max_keypermod + j]
1982 == XKeysymToKeycode(dpy, XK_Num_Lock))
1983 numlockmask = (1 << i);
1984 XFreeModifiermap(modmap);
1985 }
1986
1987 void
1988 updatesizehints(Client *c) {
1989 long msize;
1990 XSizeHints size;
1991
1992 if(!XGetWMNormalHints(dpy, c->win, &size, &msize))
1993 /* size is uninitialized, ensure that size.flags aren't used */
1994 size.flags = PSize;
1995 if(size.flags & PBaseSize) {
1996 c->basew = size.base_width;
1997 c->baseh = size.base_height;
1998 }
1999 else if(size.flags & PMinSize) {
2000 c->basew = size.min_width;
2001 c->baseh = size.min_height;
2002 }
2003 else
2004 c->basew = c->baseh = 0;
2005 if(size.flags & PResizeInc) {
2006 c->incw = size.width_inc;
2007 c->inch = size.height_inc;
2008 }
2009 else
2010 c->incw = c->inch = 0;
2011 if(size.flags & PMaxSize) {
2012 c->maxw = size.max_width;
2013 c->maxh = size.max_height;
2014 }
2015 else
2016 c->maxw = c->maxh = 0;
2017 if(size.flags & PMinSize) {
2018 c->minw = size.min_width;
2019 c->minh = size.min_height;
2020 }
2021 else if(size.flags & PBaseSize) {
2022 c->minw = size.base_width;
2023 c->minh = size.base_height;
2024 }
2025 else
2026 c->minw = c->minh = 0;
2027 if(size.flags & PAspect) {
2028 c->mina = (float)size.min_aspect.y / size.min_aspect.x;
2029 c->maxa = (float)size.max_aspect.x / size.max_aspect.y;
2030 }
2031 else
2032 c->maxa = c->mina = 0.0;
2033 c->isfixed = (c->maxw && c->minw && c->maxh && c->minh
2034 && c->maxw == c->minw && c->maxh == c->minh);
2035 }
2036
2037 void
2038 updatetitle(Client *c) {
2039 if(!gettextprop(c->win, netatom[NetWMName], c->name, sizeof c->name))
2040 gettextprop(c->win, XA_WM_NAME, c->name, sizeof c->name);
2041 if(c->name[0] == '\0') /* hack to mark broken clients */
2042 strcpy(c->name, broken);
2043 }
2044
2045 void
2046 updatestatus(void) {
2047 if(!gettextprop(root, XA_WM_NAME, stext, sizeof(stext)))
2048 strcpy(stext, "dwm-"VERSION);
2049 drawbar(selmon);
2050 }
2051
2052 void
2053 updatewindowtype(Client *c) {
2054 Atom state = getatomprop(c, netatom[NetWMState]);
2055 Atom wtype = getatomprop(c, netatom[NetWMWindowType]);
2056
2057 if(state == netatom[NetWMFullscreen])
2058 setfullscreen(c, True);
2059 if(wtype == netatom[NetWMWindowTypeDialog])
2060 c->isfloating = True;
2061 }
2062
2063 void
2064 updatewmhints(Client *c) {
2065 XWMHints *wmh;
2066
2067 if((wmh = XGetWMHints(dpy, c->win))) {
2068 if(c == selmon->sel && wmh->flags & XUrgencyHint) {
2069 wmh->flags &= ~XUrgencyHint;
2070 XSetWMHints(dpy, c->win, wmh);
2071 }
2072 else
2073 c->isurgent = (wmh->flags & XUrgencyHint) ? True : False;
2074 if(wmh->flags & InputHint)
2075 c->neverfocus = !wmh->input;
2076 else
2077 c->neverfocus = False;
2078 XFree(wmh);
2079 }
2080 }
2081
2082 void
2083 view(const Arg *arg) {
2084 if((arg->ui & TAGMASK) == selmon->tagset[selmon->seltags])
2085 return;
2086 selmon->seltags ^= 1; /* toggle sel tagset */
2087 if(arg->ui & TAGMASK)
2088 selmon->tagset[selmon->seltags] = arg->ui & TAGMASK;
2089 focus(NULL);
2090 arrange(selmon);
2091 }
2092
2093 Client *
2094 wintoclient(Window w) {
2095 Client *c;
2096 Monitor *m;
2097
2098 for(m = mons; m; m = m->next)
2099 for(c = m->clients; c; c = c->next)
2100 if(c->win == w)
2101 return c;
2102 return NULL;
2103 }
2104
2105 Monitor *
2106 wintomon(Window w) {
2107 int x, y;
2108 Client *c;
2109 Monitor *m;
2110
2111 if(w == root && getrootptr(&x, &y))
2112 return recttomon(x, y, 1, 1);
2113 for(m = mons; m; m = m->next)
2114 if(w == m->barwin)
2115 return m;
2116 if((c = wintoclient(w)))
2117 return c->mon;
2118 return selmon;
2119 }
2120
2121 /* There's no way to check accesses to destroyed windows, thus those cases are
2122 * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
2123 * default error handler, which may call exit. */
2124 int
2125 xerror(Display *dpy, XErrorEvent *ee) {
2126 if(ee->error_code == BadWindow
2127 || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
2128 || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
2129 || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
2130 || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
2131 || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
2132 || (ee->request_code == X_GrabButton && ee->error_code == BadAccess)
2133 || (ee->request_code == X_GrabKey && ee->error_code == BadAccess)
2134 || (ee->request_code == X_CopyArea && ee->error_code == BadDrawable))
2135 return 0;
2136 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
2137 ee->request_code, ee->error_code);
2138 return xerrorxlib(dpy, ee); /* may call exit */
2139 }
2140
2141 int
2142 xerrordummy(Display *dpy, XErrorEvent *ee) {
2143 return 0;
2144 }
2145
2146 /* Startup Error handler to check if another window manager
2147 * is already running. */
2148 int
2149 xerrorstart(Display *dpy, XErrorEvent *ee) {
2150 die("dwm: another window manager is already running\n");
2151 return -1;
2152 }
2153
2154 void
2155 zoom(const Arg *arg) {
2156 Client *c = selmon->sel;
2157
2158 if(!selmon->lt[selmon->sellt]->arrange
2159 || (selmon->sel && selmon->sel->isfloating))
2160 return;
2161 if(c == nexttiled(selmon->clients))
2162 if(!c || !(c = nexttiled(c->next)))
2163 return;
2164 pop(c);
2165 }
2166
2167 int
2168 main(int argc, char *argv[]) {
2169 if(argc == 2 && !strcmp("-v", argv[1]))
2170 die("dwm-"VERSION", © 2006-2012 dwm engineers, see LICENSE for details\n");
2171 else if(argc != 1)
2172 die("usage: dwm [-v]\n");
2173 if(!setlocale(LC_CTYPE, "") || !XSupportsLocale())
2174 fputs("warning: no locale support\n", stderr);
2175 if(!(dpy = XOpenDisplay(NULL)))
2176 die("dwm: cannot open display\n");
2177 checkotherwm();
2178 setup();
2179 scan();
2180 run();
2181 cleanup();
2182 XCloseDisplay(dpy);
2183 return EXIT_SUCCESS;
2184 }