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reverting to plain X11 fonts in order to implement draw.c default
[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 #include <X11/XKBlib.h>
40 #ifdef XINERAMA
41 #include <X11/extensions/Xinerama.h>
42 #endif /* XINERAMA */
43
44 #include "draw.h"
45
46 /* macros */
47 #define BUTTONMASK (ButtonPressMask|ButtonReleaseMask)
48 #define CLEANMASK(mask) (mask & ~(numlockmask|LockMask) & (ShiftMask|ControlMask|Mod1Mask|Mod2Mask|Mod3Mask|Mod4Mask|Mod5Mask))
49 #define INTERSECT(x,y,w,h,m) (MAX(0, MIN((x)+(w),(m)->wx+(m)->ww) - MAX((x),(m)->wx)) \
50 * MAX(0, MIN((y)+(h),(m)->wy+(m)->wh) - MAX((y),(m)->wy)))
51 #define ISVISIBLE(C) ((C->tags & C->mon->tagset[C->mon->seltags]))
52 #define LENGTH(X) (sizeof X / sizeof X[0])
53 #define MAX(A, B) ((A) > (B) ? (A) : (B))
54 #define MIN(A, B) ((A) < (B) ? (A) : (B))
55 #define MOUSEMASK (BUTTONMASK|PointerMotionMask)
56 #define WIDTH(X) ((X)->w + 2 * (X)->bw)
57 #define HEIGHT(X) ((X)->h + 2 * (X)->bw)
58 #define TAGMASK ((1 << LENGTH(tags)) - 1)
59 #define TEXTW(X) (textnw(X, strlen(X)) + dc.font.height)
60
61 /* enums */
62 enum { CurNormal, CurResize, CurMove, CurLast }; /* cursor */
63 enum { ColBorder, ColFG, ColBG, ColLast }; /* color */
64 enum { NetSupported, NetWMName, NetWMState,
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 Bool isfixed, isfloating, isurgent, neverfocus, oldstate, isfullscreen;
97 Client *next;
98 Client *snext;
99 Monitor *mon;
100 Window win;
101 };
102
103 typedef struct {
104 int x, y, w, h;
105 unsigned long norm[ColLast];
106 unsigned long sel[ColLast];
107 Drawable drawable;
108 GC gc;
109 struct {
110 int ascent;
111 int descent;
112 int height;
113 XFontSet set;
114 XFontStruct *xfont;
115 } font;
116 } DC; /* draw context */
117
118 typedef struct {
119 unsigned int mod;
120 KeySym keysym;
121 void (*func)(const Arg *);
122 const Arg arg;
123 } Key;
124
125 typedef struct {
126 const char *symbol;
127 void (*arrange)(Monitor *);
128 } Layout;
129
130 struct Monitor {
131 char ltsymbol[16];
132 float mfact;
133 int nmaster;
134 int num;
135 int by; /* bar geometry */
136 int mx, my, mw, mh; /* screen size */
137 int wx, wy, ww, wh; /* window area */
138 unsigned int seltags;
139 unsigned int sellt;
140 unsigned int tagset[2];
141 Bool showbar;
142 Bool topbar;
143 Client *clients;
144 Client *sel;
145 Client *stack;
146 Monitor *next;
147 Window barwin;
148 const Layout *lt[2];
149 };
150
151 typedef struct {
152 const char *class;
153 const char *instance;
154 const char *title;
155 unsigned int tags;
156 Bool isfloating;
157 int monitor;
158 } Rule;
159
160 /* function declarations */
161 static void applyrules(Client *c);
162 static Bool applysizehints(Client *c, int *x, int *y, int *w, int *h, Bool interact);
163 static void arrange(Monitor *m);
164 static void arrangemon(Monitor *m);
165 static void attach(Client *c);
166 static void attachstack(Client *c);
167 static void buttonpress(XEvent *e);
168 static void checkotherwm(void);
169 static void cleanup(void);
170 static void cleanupmon(Monitor *mon);
171 static void clearurgent(Client *c);
172 static void clientmessage(XEvent *e);
173 static void configure(Client *c);
174 static void configurenotify(XEvent *e);
175 static void configurerequest(XEvent *e);
176 static Monitor *createmon(void);
177 static void destroynotify(XEvent *e);
178 static void detach(Client *c);
179 static void detachstack(Client *c);
180 static void die(const char *errstr, ...);
181 static Monitor *dirtomon(int dir);
182 static void drawbar(Monitor *m);
183 static void drawbars(void);
184 static void drawsquare(Bool filled, Bool empty, Bool invert, unsigned long col[ColLast]);
185 static void drawtext(const char *text, unsigned long col[ColLast], Bool invert);
186 static void enternotify(XEvent *e);
187 static void expose(XEvent *e);
188 static void focus(Client *c);
189 static void focusin(XEvent *e);
190 static void focusmon(const Arg *arg);
191 static void focusstack(const Arg *arg);
192 static unsigned long getcolor(const char *colstr);
193 static Bool getrootptr(int *x, int *y);
194 static long getstate(Window w);
195 static Bool gettextprop(Window w, Atom atom, char *text, unsigned int size);
196 static void grabbuttons(Client *c, Bool focused);
197 static void grabkeys(void);
198 static void incnmaster(const Arg *arg);
199 static void initfont(const char *fontstr);
200 static void keypress(XEvent *e);
201 static void killclient(const Arg *arg);
202 static void manage(Window w, XWindowAttributes *wa);
203 static void mappingnotify(XEvent *e);
204 static void maprequest(XEvent *e);
205 static void monocle(Monitor *m);
206 static void motionnotify(XEvent *e);
207 static void movemouse(const Arg *arg);
208 static Client *nexttiled(Client *c);
209 static void pop(Client *);
210 static void propertynotify(XEvent *e);
211 static void quit(const Arg *arg);
212 static Monitor *recttomon(int x, int y, int w, int h);
213 static void resize(Client *c, int x, int y, int w, int h, Bool interact);
214 static void resizeclient(Client *c, int x, int y, int w, int h);
215 static void resizemouse(const Arg *arg);
216 static void restack(Monitor *m);
217 static void run(void);
218 static void scan(void);
219 static Bool sendevent(Client *c, Atom proto);
220 static void sendmon(Client *c, Monitor *m);
221 static void setclientstate(Client *c, long state);
222 static void setfocus(Client *c);
223 static void setfullscreen(Client *c, Bool fullscreen);
224 static void setlayout(const Arg *arg);
225 static void setmfact(const Arg *arg);
226 static void setup(void);
227 static void showhide(Client *c);
228 static void sigchld(int unused);
229 static void spawn(const Arg *arg);
230 static void tag(const Arg *arg);
231 static void tagmon(const Arg *arg);
232 static int textnw(const char *text, unsigned int len);
233 static void tile(Monitor *);
234 static void togglebar(const Arg *arg);
235 static void togglefloating(const Arg *arg);
236 static void toggletag(const Arg *arg);
237 static void toggleview(const Arg *arg);
238 static void unfocus(Client *c, Bool setfocus);
239 static void unmanage(Client *c, Bool destroyed);
240 static void unmapnotify(XEvent *e);
241 static Bool updategeom(void);
242 static void updatebarpos(Monitor *m);
243 static void updatebars(void);
244 static void updateclientlist(void);
245 static void updatenumlockmask(void);
246 static void updatesizehints(Client *c);
247 static void updatestatus(void);
248 static void updatewindowtype(Client *c);
249 static void updatetitle(Client *c);
250 static void updatewmhints(Client *c);
251 static void view(const Arg *arg);
252 static Client *wintoclient(Window w);
253 static Monitor *wintomon(Window w);
254 static int xerror(Display *dpy, XErrorEvent *ee);
255 static int xerrordummy(Display *dpy, XErrorEvent *ee);
256 static int xerrorstart(Display *dpy, XErrorEvent *ee);
257 static void zoom(const Arg *arg);
258
259 /* variables */
260 static const char broken[] = "broken";
261 static char stext[256];
262 static int screen;
263 static int sw, sh; /* X display screen geometry width, height */
264 static int bh, blw = 0; /* bar geometry */
265 static int (*xerrorxlib)(Display *, XErrorEvent *);
266 static unsigned int numlockmask = 0;
267 static void (*handler[LASTEvent]) (XEvent *) = {
268 [ButtonPress] = buttonpress,
269 [ClientMessage] = clientmessage,
270 [ConfigureRequest] = configurerequest,
271 [ConfigureNotify] = configurenotify,
272 [DestroyNotify] = destroynotify,
273 [EnterNotify] = enternotify,
274 [Expose] = expose,
275 [FocusIn] = focusin,
276 [KeyPress] = keypress,
277 [MappingNotify] = mappingnotify,
278 [MapRequest] = maprequest,
279 [MotionNotify] = motionnotify,
280 [PropertyNotify] = propertynotify,
281 [UnmapNotify] = unmapnotify
282 };
283 static Atom wmatom[WMLast], netatom[NetLast];
284 static Bool running = True, usexkb;
285 static Cursor cursor[CurLast];
286 static Display *dpy;
287 static DC dc;
288 static Monitor *mons = NULL, *selmon = NULL;
289 static Window root;
290
291 /* configuration, allows nested code to access above variables */
292 #include "config.h"
293
294 /* compile-time check if all tags fit into an unsigned int bit array. */
295 struct NumTags { char limitexceeded[LENGTH(tags) > 31 ? -1 : 1]; };
296
297 /* function implementations */
298 void
299 applyrules(Client *c) {
300 const char *class, *instance;
301 unsigned int i;
302 const Rule *r;
303 Monitor *m;
304 XClassHint ch = { NULL, NULL };
305
306 /* rule matching */
307 c->isfloating = c->tags = 0;
308 XGetClassHint(dpy, c->win, &ch);
309 class = ch.res_class ? ch.res_class : broken;
310 instance = ch.res_name ? ch.res_name : broken;
311
312 for(i = 0; i < LENGTH(rules); i++) {
313 r = &rules[i];
314 if((!r->title || strstr(c->name, r->title))
315 && (!r->class || strstr(class, r->class))
316 && (!r->instance || strstr(instance, r->instance)))
317 {
318 c->isfloating = r->isfloating;
319 c->tags |= r->tags;
320 for(m = mons; m && m->num != r->monitor; m = m->next);
321 if(m)
322 c->mon = m;
323 }
324 }
325 if(ch.res_class)
326 XFree(ch.res_class);
327 if(ch.res_name)
328 XFree(ch.res_name);
329 c->tags = c->tags & TAGMASK ? c->tags & TAGMASK : c->mon->tagset[c->mon->seltags];
330 }
331
332 Bool
333 applysizehints(Client *c, int *x, int *y, int *w, int *h, Bool interact) {
334 Bool baseismin;
335 Monitor *m = c->mon;
336
337 /* set minimum possible */
338 *w = MAX(1, *w);
339 *h = MAX(1, *h);
340 if(interact) {
341 if(*x > sw)
342 *x = sw - WIDTH(c);
343 if(*y > sh)
344 *y = sh - HEIGHT(c);
345 if(*x + *w + 2 * c->bw < 0)
346 *x = 0;
347 if(*y + *h + 2 * c->bw < 0)
348 *y = 0;
349 }
350 else {
351 if(*x >= m->wx + m->ww)
352 *x = m->wx + m->ww - WIDTH(c);
353 if(*y >= m->wy + m->wh)
354 *y = m->wy + m->wh - HEIGHT(c);
355 if(*x + *w + 2 * c->bw <= m->wx)
356 *x = m->wx;
357 if(*y + *h + 2 * c->bw <= m->wy)
358 *y = m->wy;
359 }
360 if(*h < bh)
361 *h = bh;
362 if(*w < bh)
363 *w = bh;
364 if(resizehints || c->isfloating || !c->mon->lt[c->mon->sellt]->arrange) {
365 /* see last two sentences in ICCCM 4.1.2.3 */
366 baseismin = c->basew == c->minw && c->baseh == c->minh;
367 if(!baseismin) { /* temporarily remove base dimensions */
368 *w -= c->basew;
369 *h -= c->baseh;
370 }
371 /* adjust for aspect limits */
372 if(c->mina > 0 && c->maxa > 0) {
373 if(c->maxa < (float)*w / *h)
374 *w = *h * c->maxa + 0.5;
375 else if(c->mina < (float)*h / *w)
376 *h = *w * c->mina + 0.5;
377 }
378 if(baseismin) { /* increment calculation requires this */
379 *w -= c->basew;
380 *h -= c->baseh;
381 }
382 /* adjust for increment value */
383 if(c->incw)
384 *w -= *w % c->incw;
385 if(c->inch)
386 *h -= *h % c->inch;
387 /* restore base dimensions */
388 *w = MAX(*w + c->basew, c->minw);
389 *h = MAX(*h + c->baseh, c->minh);
390 if(c->maxw)
391 *w = MIN(*w, c->maxw);
392 if(c->maxh)
393 *h = MIN(*h, c->maxh);
394 }
395 return *x != c->x || *y != c->y || *w != c->w || *h != c->h;
396 }
397
398 void
399 arrange(Monitor *m) {
400 if(m)
401 showhide(m->stack);
402 else for(m = mons; m; m = m->next)
403 showhide(m->stack);
404 if(m) {
405 arrangemon(m);
406 restack(m);
407 } else for(m = mons; m; m = m->next)
408 arrangemon(m);
409 }
410
411 void
412 arrangemon(Monitor *m) {
413 strncpy(m->ltsymbol, m->lt[m->sellt]->symbol, sizeof m->ltsymbol);
414 if(m->lt[m->sellt]->arrange)
415 m->lt[m->sellt]->arrange(m);
416 }
417
418 void
419 attach(Client *c) {
420 c->next = c->mon->clients;
421 c->mon->clients = c;
422 }
423
424 void
425 attachstack(Client *c) {
426 c->snext = c->mon->stack;
427 c->mon->stack = c;
428 }
429
430 void
431 buttonpress(XEvent *e) {
432 unsigned int i, x, click;
433 Arg arg = {0};
434 Client *c;
435 Monitor *m;
436 XButtonPressedEvent *ev = &e->xbutton;
437
438 click = ClkRootWin;
439 /* focus monitor if necessary */
440 if((m = wintomon(ev->window)) && m != selmon) {
441 unfocus(selmon->sel, True);
442 selmon = m;
443 focus(NULL);
444 }
445 if(ev->window == selmon->barwin) {
446 i = x = 0;
447 do
448 x += TEXTW(tags[i]);
449 while(ev->x >= x && ++i < LENGTH(tags));
450 if(i < LENGTH(tags)) {
451 click = ClkTagBar;
452 arg.ui = 1 << i;
453 }
454 else if(ev->x < x + blw)
455 click = ClkLtSymbol;
456 else if(ev->x > selmon->ww - TEXTW(stext))
457 click = ClkStatusText;
458 else
459 click = ClkWinTitle;
460 }
461 else if((c = wintoclient(ev->window))) {
462 focus(c);
463 click = ClkClientWin;
464 }
465 for(i = 0; i < LENGTH(buttons); i++)
466 if(click == buttons[i].click && buttons[i].func && buttons[i].button == ev->button
467 && CLEANMASK(buttons[i].mask) == CLEANMASK(ev->state))
468 buttons[i].func(click == ClkTagBar && buttons[i].arg.i == 0 ? &arg : &buttons[i].arg);
469 }
470
471 void
472 checkotherwm(void) {
473 xerrorxlib = XSetErrorHandler(xerrorstart);
474 /* this causes an error if some other window manager is running */
475 XSelectInput(dpy, DefaultRootWindow(dpy), SubstructureRedirectMask);
476 XSync(dpy, False);
477 XSetErrorHandler(xerror);
478 XSync(dpy, False);
479 }
480
481 void
482 cleanup(void) {
483 Arg a = {.ui = ~0};
484 Layout foo = { "", NULL };
485 Monitor *m;
486
487 view(&a);
488 selmon->lt[selmon->sellt] = &foo;
489 for(m = mons; m; m = m->next)
490 while(m->stack)
491 unmanage(m->stack, False);
492 if(dc.font.set)
493 XFreeFontSet(dpy, dc.font.set);
494 else
495 XFreeFont(dpy, dc.font.xfont);
496 XUngrabKey(dpy, AnyKey, AnyModifier, root);
497 XFreePixmap(dpy, dc.drawable);
498 XFreeGC(dpy, dc.gc);
499 XFreeCursor(dpy, cursor[CurNormal]);
500 XFreeCursor(dpy, cursor[CurResize]);
501 XFreeCursor(dpy, cursor[CurMove]);
502 while(mons)
503 cleanupmon(mons);
504 XSync(dpy, False);
505 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
506 XDeleteProperty(dpy, root, netatom[NetActiveWindow]);
507 }
508
509 void
510 cleanupmon(Monitor *mon) {
511 Monitor *m;
512
513 if(mon == mons)
514 mons = mons->next;
515 else {
516 for(m = mons; m && m->next != mon; m = m->next);
517 m->next = mon->next;
518 }
519 XUnmapWindow(dpy, mon->barwin);
520 XDestroyWindow(dpy, mon->barwin);
521 free(mon);
522 }
523
524 void
525 clearurgent(Client *c) {
526 XWMHints *wmh;
527
528 c->isurgent = False;
529 if(!(wmh = XGetWMHints(dpy, c->win)))
530 return;
531 wmh->flags &= ~XUrgencyHint;
532 XSetWMHints(dpy, c->win, wmh);
533 XFree(wmh);
534 }
535
536 void
537 clientmessage(XEvent *e) {
538 XClientMessageEvent *cme = &e->xclient;
539 Client *c = wintoclient(cme->window);
540
541 if(!c)
542 return;
543 if(cme->message_type == netatom[NetWMState]) {
544 if(cme->data.l[1] == netatom[NetWMFullscreen] || cme->data.l[2] == netatom[NetWMFullscreen])
545 setfullscreen(c, (cme->data.l[0] == 1 /* _NET_WM_STATE_ADD */
546 || (cme->data.l[0] == 2 /* _NET_WM_STATE_TOGGLE */ && !c->isfullscreen)));
547 }
548 else if(cme->message_type == netatom[NetActiveWindow]) {
549 if(!ISVISIBLE(c)) {
550 c->mon->seltags ^= 1;
551 c->mon->tagset[c->mon->seltags] = c->tags;
552 }
553 pop(c);
554 }
555 }
556
557 void
558 configure(Client *c) {
559 XConfigureEvent ce;
560
561 ce.type = ConfigureNotify;
562 ce.display = dpy;
563 ce.event = c->win;
564 ce.window = c->win;
565 ce.x = c->x;
566 ce.y = c->y;
567 ce.width = c->w;
568 ce.height = c->h;
569 ce.border_width = c->bw;
570 ce.above = None;
571 ce.override_redirect = False;
572 XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&ce);
573 }
574
575 void
576 configurenotify(XEvent *e) {
577 Monitor *m;
578 XConfigureEvent *ev = &e->xconfigure;
579 Bool dirty;
580
581 // TODO: updategeom handling sucks, needs to be simplified
582 if(ev->window == root) {
583 dirty = (sw != ev->width || sh != ev->height);
584 sw = ev->width;
585 sh = ev->height;
586 if(updategeom() || dirty) {
587 if(dc.drawable != 0)
588 XFreePixmap(dpy, dc.drawable);
589 dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
590 updatebars();
591 for(m = mons; m; m = m->next)
592 XMoveResizeWindow(dpy, m->barwin, m->wx, m->by, m->ww, bh);
593 focus(NULL);
594 arrange(NULL);
595 }
596 }
597 }
598
599 void
600 configurerequest(XEvent *e) {
601 Client *c;
602 Monitor *m;
603 XConfigureRequestEvent *ev = &e->xconfigurerequest;
604 XWindowChanges wc;
605
606 if((c = wintoclient(ev->window))) {
607 if(ev->value_mask & CWBorderWidth)
608 c->bw = ev->border_width;
609 else if(c->isfloating || !selmon->lt[selmon->sellt]->arrange) {
610 m = c->mon;
611 if(ev->value_mask & CWX) {
612 c->oldx = c->x;
613 c->x = m->mx + ev->x;
614 }
615 if(ev->value_mask & CWY) {
616 c->oldy = c->y;
617 c->y = m->my + ev->y;
618 }
619 if(ev->value_mask & CWWidth) {
620 c->oldw = c->w;
621 c->w = ev->width;
622 }
623 if(ev->value_mask & CWHeight) {
624 c->oldh = c->h;
625 c->h = ev->height;
626 }
627 if((c->x + c->w) > m->mx + m->mw && c->isfloating)
628 c->x = m->mx + (m->mw / 2 - WIDTH(c) / 2); /* center in x direction */
629 if((c->y + c->h) > m->my + m->mh && c->isfloating)
630 c->y = m->my + (m->mh / 2 - HEIGHT(c) / 2); /* center in y direction */
631 if((ev->value_mask & (CWX|CWY)) && !(ev->value_mask & (CWWidth|CWHeight)))
632 configure(c);
633 if(ISVISIBLE(c))
634 XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
635 }
636 else
637 configure(c);
638 }
639 else {
640 wc.x = ev->x;
641 wc.y = ev->y;
642 wc.width = ev->width;
643 wc.height = ev->height;
644 wc.border_width = ev->border_width;
645 wc.sibling = ev->above;
646 wc.stack_mode = ev->detail;
647 XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
648 }
649 XSync(dpy, False);
650 }
651
652 Monitor *
653 createmon(void) {
654 Monitor *m;
655
656 if(!(m = (Monitor *)calloc(1, sizeof(Monitor))))
657 die("fatal: could not malloc() %u bytes\n", sizeof(Monitor));
658 m->tagset[0] = m->tagset[1] = 1;
659 m->mfact = mfact;
660 m->nmaster = nmaster;
661 m->showbar = showbar;
662 m->topbar = topbar;
663 m->lt[0] = &layouts[0];
664 m->lt[1] = &layouts[1 % LENGTH(layouts)];
665 strncpy(m->ltsymbol, layouts[0].symbol, sizeof m->ltsymbol);
666 return m;
667 }
668
669 void
670 destroynotify(XEvent *e) {
671 Client *c;
672 XDestroyWindowEvent *ev = &e->xdestroywindow;
673
674 if((c = wintoclient(ev->window)))
675 unmanage(c, True);
676 }
677
678 void
679 detach(Client *c) {
680 Client **tc;
681
682 for(tc = &c->mon->clients; *tc && *tc != c; tc = &(*tc)->next);
683 *tc = c->next;
684 }
685
686 void
687 detachstack(Client *c) {
688 Client **tc, *t;
689
690 for(tc = &c->mon->stack; *tc && *tc != c; tc = &(*tc)->snext);
691 *tc = c->snext;
692
693 if(c == c->mon->sel) {
694 for(t = c->mon->stack; t && !ISVISIBLE(t); t = t->snext);
695 c->mon->sel = t;
696 }
697 }
698
699 void
700 die(const char *errstr, ...) {
701 va_list ap;
702
703 va_start(ap, errstr);
704 vfprintf(stderr, errstr, ap);
705 va_end(ap);
706 exit(EXIT_FAILURE);
707 }
708
709 Monitor *
710 dirtomon(int dir) {
711 Monitor *m = NULL;
712
713 if(dir > 0) {
714 if(!(m = selmon->next))
715 m = mons;
716 }
717 else if(selmon == mons)
718 for(m = mons; m->next; m = m->next);
719 else
720 for(m = mons; m->next != selmon; m = m->next);
721 return m;
722 }
723
724 void
725 drawbar(Monitor *m) {
726 int x;
727 unsigned int i, occ = 0, urg = 0;
728 unsigned long *col;
729 Client *c;
730
731 for(c = m->clients; c; c = c->next) {
732 occ |= c->tags;
733 if(c->isurgent)
734 urg |= c->tags;
735 }
736 dc.x = 0;
737 for(i = 0; i < LENGTH(tags); i++) {
738 dc.w = TEXTW(tags[i]);
739 col = m->tagset[m->seltags] & 1 << i ? dc.sel : dc.norm;
740 drawtext(tags[i], col, urg & 1 << i);
741 drawsquare(m == selmon && selmon->sel && selmon->sel->tags & 1 << i,
742 occ & 1 << i, urg & 1 << i, col);
743 dc.x += dc.w;
744 }
745 dc.w = blw = TEXTW(m->ltsymbol);
746 drawtext(m->ltsymbol, dc.norm, False);
747 dc.x += dc.w;
748 x = dc.x;
749 if(m == selmon) { /* status is only drawn on selected monitor */
750 dc.w = TEXTW(stext);
751 dc.x = m->ww - dc.w;
752 if(dc.x < x) {
753 dc.x = x;
754 dc.w = m->ww - x;
755 }
756 drawtext(stext, dc.norm, False);
757 }
758 else
759 dc.x = m->ww;
760 if((dc.w = dc.x - x) > bh) {
761 dc.x = x;
762 if(m->sel) {
763 col = m == selmon ? dc.sel : dc.norm;
764 drawtext(m->sel->name, col, False);
765 drawsquare(m->sel->isfixed, m->sel->isfloating, False, col);
766 }
767 else
768 drawtext(NULL, dc.norm, False);
769 }
770 XCopyArea(dpy, dc.drawable, m->barwin, dc.gc, 0, 0, m->ww, bh, 0, 0);
771 XSync(dpy, False);
772 }
773
774 void
775 drawbars(void) {
776 Monitor *m;
777
778 for(m = mons; m; m = m->next)
779 drawbar(m);
780 }
781
782 void
783 drawsquare(Bool filled, Bool empty, Bool invert, unsigned long col[ColLast]) {
784 int x;
785
786 XSetForeground(dpy, dc.gc, col[invert ? ColBG : ColFG]);
787 x = (dc.font.ascent + dc.font.descent + 2) / 4;
788 if(filled)
789 XFillRectangle(dpy, dc.drawable, dc.gc, dc.x+1, dc.y+1, x+1, x+1);
790 else if(empty)
791 XDrawRectangle(dpy, dc.drawable, dc.gc, dc.x+1, dc.y+1, x, x);
792 }
793
794 void
795 drawtext(const char *text, unsigned long col[ColLast], Bool invert) {
796 char buf[256];
797 int i, x, y, h, len, olen;
798
799 XSetForeground(dpy, dc.gc, col[invert ? ColFG : ColBG]);
800 XFillRectangle(dpy, dc.drawable, dc.gc, dc.x, dc.y, dc.w, dc.h);
801 if(!text)
802 return;
803 olen = strlen(text);
804 h = dc.font.ascent + dc.font.descent;
805 y = dc.y + (dc.h / 2) - (h / 2) + dc.font.ascent;
806 x = dc.x + (h / 2);
807 /* shorten text if necessary */
808 for(len = MIN(olen, sizeof buf); len && textnw(text, len) > dc.w - h; len--);
809 if(!len)
810 return;
811 memcpy(buf, text, len);
812 if(len < olen)
813 for(i = len; i && i > len - 3; buf[--i] = '.');
814 XSetForeground(dpy, dc.gc, col[invert ? ColBG : ColFG]);
815 if(dc.font.set)
816 XmbDrawString(dpy, dc.drawable, dc.font.set, dc.gc, x, y, buf, len);
817 else
818 XDrawString(dpy, dc.drawable, dc.gc, x, y, buf, len);
819 }
820
821 void
822 enternotify(XEvent *e) {
823 Client *c;
824 Monitor *m;
825 XCrossingEvent *ev = &e->xcrossing;
826
827 if((ev->mode != NotifyNormal || ev->detail == NotifyInferior) && ev->window != root)
828 return;
829 c = wintoclient(ev->window);
830 m = c ? c->mon : wintomon(ev->window);
831 if(m != selmon) {
832 unfocus(selmon->sel, True);
833 selmon = m;
834 }
835 else if(!c || c == selmon->sel)
836 return;
837 focus(c);
838 }
839
840 void
841 expose(XEvent *e) {
842 Monitor *m;
843 XExposeEvent *ev = &e->xexpose;
844
845 if(ev->count == 0 && (m = wintomon(ev->window)))
846 drawbar(m);
847 }
848
849 void
850 focus(Client *c) {
851 if(!c || !ISVISIBLE(c))
852 for(c = selmon->stack; c && !ISVISIBLE(c); c = c->snext);
853 /* was if(selmon->sel) */
854 if(selmon->sel && selmon->sel != c)
855 unfocus(selmon->sel, False);
856 if(c) {
857 if(c->mon != selmon)
858 selmon = c->mon;
859 if(c->isurgent)
860 clearurgent(c);
861 detachstack(c);
862 attachstack(c);
863 grabbuttons(c, True);
864 XSetWindowBorder(dpy, c->win, dc.sel[ColBorder]);
865 setfocus(c);
866 }
867 else {
868 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
869 XDeleteProperty(dpy, root, netatom[NetActiveWindow]);
870 }
871 selmon->sel = c;
872 drawbars();
873 }
874
875 void
876 focusin(XEvent *e) { /* there are some broken focus acquiring clients */
877 XFocusChangeEvent *ev = &e->xfocus;
878
879 if(selmon->sel && ev->window != selmon->sel->win)
880 setfocus(selmon->sel);
881 }
882
883 void
884 focusmon(const Arg *arg) {
885 Monitor *m;
886
887 if(!mons->next)
888 return;
889 if((m = dirtomon(arg->i)) == selmon)
890 return;
891 unfocus(selmon->sel, False); /* s/True/False/ fixes input focus issues
892 in gedit and anjuta */
893 selmon = m;
894 focus(NULL);
895 }
896
897 void
898 focusstack(const Arg *arg) {
899 Client *c = NULL, *i;
900
901 if(!selmon->sel)
902 return;
903 if(arg->i > 0) {
904 for(c = selmon->sel->next; c && !ISVISIBLE(c); c = c->next);
905 if(!c)
906 for(c = selmon->clients; c && !ISVISIBLE(c); c = c->next);
907 }
908 else {
909 for(i = selmon->clients; i != selmon->sel; i = i->next)
910 if(ISVISIBLE(i))
911 c = i;
912 if(!c)
913 for(; i; i = i->next)
914 if(ISVISIBLE(i))
915 c = i;
916 }
917 if(c) {
918 focus(c);
919 restack(selmon);
920 }
921 }
922
923 Atom
924 getatomprop(Client *c, Atom prop) {
925 int di;
926 unsigned long dl;
927 unsigned char *p = NULL;
928 Atom da, atom = None;
929
930 if(XGetWindowProperty(dpy, c->win, prop, 0L, sizeof atom, False, XA_ATOM,
931 &da, &di, &dl, &dl, &p) == Success && p) {
932 atom = *(Atom *)p;
933 XFree(p);
934 }
935 return atom;
936 }
937
938 unsigned long
939 getcolor(const char *colstr) {
940 Colormap cmap = DefaultColormap(dpy, screen);
941 XColor color;
942
943 if(!XAllocNamedColor(dpy, cmap, colstr, &color, &color))
944 die("error, cannot allocate color '%s'\n", colstr);
945 return color.pixel;
946 }
947
948 Bool
949 getrootptr(int *x, int *y) {
950 int di;
951 unsigned int dui;
952 Window dummy;
953
954 return XQueryPointer(dpy, root, &dummy, &dummy, x, y, &di, &di, &dui);
955 }
956
957 long
958 getstate(Window w) {
959 int format;
960 long result = -1;
961 unsigned char *p = NULL;
962 unsigned long n, extra;
963 Atom real;
964
965 if(XGetWindowProperty(dpy, w, wmatom[WMState], 0L, 2L, False, wmatom[WMState],
966 &real, &format, &n, &extra, (unsigned char **)&p) != Success)
967 return -1;
968 if(n != 0)
969 result = *p;
970 XFree(p);
971 return result;
972 }
973
974 Bool
975 gettextprop(Window w, Atom atom, char *text, unsigned int size) {
976 char **list = NULL;
977 int n;
978 XTextProperty name;
979
980 if(!text || size == 0)
981 return False;
982 text[0] = '\0';
983 XGetTextProperty(dpy, w, &name, atom);
984 if(!name.nitems)
985 return False;
986 if(name.encoding == XA_STRING)
987 strncpy(text, (char *)name.value, size - 1);
988 else {
989 if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success && n > 0 && *list) {
990 strncpy(text, *list, size - 1);
991 XFreeStringList(list);
992 }
993 }
994 text[size - 1] = '\0';
995 XFree(name.value);
996 return True;
997 }
998
999 void
1000 grabbuttons(Client *c, Bool focused) {
1001 updatenumlockmask();
1002 {
1003 unsigned int i, j;
1004 unsigned int modifiers[] = { 0, LockMask, numlockmask, numlockmask|LockMask };
1005 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
1006 if(focused) {
1007 for(i = 0; i < LENGTH(buttons); i++)
1008 if(buttons[i].click == ClkClientWin)
1009 for(j = 0; j < LENGTH(modifiers); j++)
1010 XGrabButton(dpy, buttons[i].button,
1011 buttons[i].mask | modifiers[j],
1012 c->win, False, BUTTONMASK,
1013 GrabModeAsync, GrabModeSync, None, None);
1014 }
1015 else
1016 XGrabButton(dpy, AnyButton, AnyModifier, c->win, False,
1017 BUTTONMASK, GrabModeAsync, GrabModeSync, None, None);
1018 }
1019 }
1020
1021 void
1022 grabkeys(void) {
1023 updatenumlockmask();
1024 {
1025 unsigned int i, j;
1026 unsigned int modifiers[] = { 0, LockMask, numlockmask, numlockmask|LockMask };
1027 KeyCode code;
1028
1029 XUngrabKey(dpy, AnyKey, AnyModifier, root);
1030 for(i = 0; i < LENGTH(keys); i++)
1031 if((code = XKeysymToKeycode(dpy, keys[i].keysym)))
1032 for(j = 0; j < LENGTH(modifiers); j++)
1033 XGrabKey(dpy, code, keys[i].mod | modifiers[j], root,
1034 True, GrabModeAsync, GrabModeAsync);
1035 }
1036 }
1037
1038 void
1039 incnmaster(const Arg *arg) {
1040 selmon->nmaster = MAX(selmon->nmaster + arg->i, 0);
1041 arrange(selmon);
1042 }
1043
1044 void
1045 initfont(const char *fontstr) {
1046 char *def, **missing;
1047 int n;
1048
1049 dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
1050 if(missing) {
1051 while(n--)
1052 fprintf(stderr, "dwm: missing fontset: %s\n", missing[n]);
1053 XFreeStringList(missing);
1054 }
1055 if(dc.font.set) {
1056 XFontStruct **xfonts;
1057 char **font_names;
1058
1059 dc.font.ascent = dc.font.descent = 0;
1060 XExtentsOfFontSet(dc.font.set);
1061 n = XFontsOfFontSet(dc.font.set, &xfonts, &font_names);
1062 while(n--) {
1063 dc.font.ascent = MAX(dc.font.ascent, (*xfonts)->ascent);
1064 dc.font.descent = MAX(dc.font.descent,(*xfonts)->descent);
1065 xfonts++;
1066 }
1067 }
1068 else {
1069 if(!(dc.font.xfont = XLoadQueryFont(dpy, fontstr))
1070 && !(dc.font.xfont = XLoadQueryFont(dpy, "fixed")))
1071 die("error, cannot load font: '%s'\n", fontstr);
1072 dc.font.ascent = dc.font.xfont->ascent;
1073 dc.font.descent = dc.font.xfont->descent;
1074 }
1075 dc.font.height = dc.font.ascent + dc.font.descent;
1076 }
1077
1078 #ifdef XINERAMA
1079 static Bool
1080 isuniquegeom(XineramaScreenInfo *unique, size_t n, XineramaScreenInfo *info) {
1081 while(n--)
1082 if(unique[n].x_org == info->x_org && unique[n].y_org == info->y_org
1083 && unique[n].width == info->width && unique[n].height == info->height)
1084 return False;
1085 return True;
1086 }
1087 #endif /* XINERAMA */
1088
1089 void
1090 keypress(XEvent *e) {
1091 unsigned int i;
1092 KeySym keysym;
1093 XKeyEvent *ev;
1094
1095 ev = &e->xkey;
1096 if(usexkb)
1097 keysym = XkbKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0, 0);
1098 else
1099 keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
1100 for(i = 0; i < LENGTH(keys); i++)
1101 if(keysym == keys[i].keysym
1102 && CLEANMASK(keys[i].mod) == CLEANMASK(ev->state)
1103 && keys[i].func)
1104 keys[i].func(&(keys[i].arg));
1105 }
1106
1107 void
1108 killclient(const Arg *arg) {
1109 if(!selmon->sel)
1110 return;
1111 if(!sendevent(selmon->sel, wmatom[WMDelete])) {
1112 XGrabServer(dpy);
1113 XSetErrorHandler(xerrordummy);
1114 XSetCloseDownMode(dpy, DestroyAll);
1115 XKillClient(dpy, selmon->sel->win);
1116 XSync(dpy, False);
1117 XSetErrorHandler(xerror);
1118 XUngrabServer(dpy);
1119 }
1120 }
1121
1122 void
1123 manage(Window w, XWindowAttributes *wa) {
1124 Client *c, *t = NULL;
1125 Window trans = None;
1126 XWindowChanges wc;
1127
1128 if(!(c = calloc(1, sizeof(Client))))
1129 die("fatal: could not malloc() %u bytes\n", sizeof(Client));
1130 c->win = w;
1131 updatetitle(c);
1132 if(XGetTransientForHint(dpy, w, &trans) && (t = wintoclient(trans))) {
1133 c->mon = t->mon;
1134 c->tags = t->tags;
1135 }
1136 else {
1137 c->mon = selmon;
1138 applyrules(c);
1139 }
1140 /* geometry */
1141 c->x = c->oldx = wa->x;
1142 c->y = c->oldy = wa->y;
1143 c->w = c->oldw = wa->width;
1144 c->h = c->oldh = wa->height;
1145 c->oldbw = wa->border_width;
1146
1147 if(c->x + WIDTH(c) > c->mon->mx + c->mon->mw)
1148 c->x = c->mon->mx + c->mon->mw - WIDTH(c);
1149 if(c->y + HEIGHT(c) > c->mon->my + c->mon->mh)
1150 c->y = c->mon->my + c->mon->mh - HEIGHT(c);
1151 c->x = MAX(c->x, c->mon->mx);
1152 /* only fix client y-offset, if the client center might cover the bar */
1153 c->y = MAX(c->y, ((c->mon->by == c->mon->my) && (c->x + (c->w / 2) >= c->mon->wx)
1154 && (c->x + (c->w / 2) < c->mon->wx + c->mon->ww)) ? bh : c->mon->my);
1155 c->bw = borderpx;
1156
1157 wc.border_width = c->bw;
1158 XConfigureWindow(dpy, w, CWBorderWidth, &wc);
1159 XSetWindowBorder(dpy, w, dc.norm[ColBorder]);
1160 configure(c); /* propagates border_width, if size doesn't change */
1161 updatewindowtype(c);
1162 updatesizehints(c);
1163 updatewmhints(c);
1164 XSelectInput(dpy, w, EnterWindowMask|FocusChangeMask|PropertyChangeMask|StructureNotifyMask);
1165 grabbuttons(c, False);
1166 if(!c->isfloating)
1167 c->isfloating = c->oldstate = trans != None || c->isfixed;
1168 if(c->isfloating)
1169 XRaiseWindow(dpy, c->win);
1170 attach(c);
1171 attachstack(c);
1172 XChangeProperty(dpy, root, netatom[NetClientList], XA_WINDOW, 32, PropModeAppend,
1173 (unsigned char *) &(c->win), 1);
1174 XMoveResizeWindow(dpy, c->win, c->x + 2 * sw, c->y, c->w, c->h); /* some windows require this */
1175 setclientstate(c, NormalState);
1176 if (c->mon == selmon)
1177 unfocus(selmon->sel, False);
1178 c->mon->sel = c;
1179 arrange(c->mon);
1180 XMapWindow(dpy, c->win);
1181 focus(NULL);
1182 }
1183
1184 void
1185 mappingnotify(XEvent *e) {
1186 XMappingEvent *ev = &e->xmapping;
1187
1188 XRefreshKeyboardMapping(ev);
1189 if(ev->request == MappingKeyboard)
1190 grabkeys();
1191 }
1192
1193 void
1194 maprequest(XEvent *e) {
1195 static XWindowAttributes wa;
1196 XMapRequestEvent *ev = &e->xmaprequest;
1197
1198 if(!XGetWindowAttributes(dpy, ev->window, &wa))
1199 return;
1200 if(wa.override_redirect)
1201 return;
1202 if(!wintoclient(ev->window))
1203 manage(ev->window, &wa);
1204 }
1205
1206 void
1207 monocle(Monitor *m) {
1208 unsigned int n = 0;
1209 Client *c;
1210
1211 for(c = m->clients; c; c = c->next)
1212 if(ISVISIBLE(c))
1213 n++;
1214 if(n > 0) /* override layout symbol */
1215 snprintf(m->ltsymbol, sizeof m->ltsymbol, "[%d]", n);
1216 for(c = nexttiled(m->clients); c; c = nexttiled(c->next))
1217 resize(c, m->wx, m->wy, m->ww - 2 * c->bw, m->wh - 2 * c->bw, False);
1218 }
1219
1220 void
1221 motionnotify(XEvent *e) {
1222 static Monitor *mon = NULL;
1223 Monitor *m;
1224 XMotionEvent *ev = &e->xmotion;
1225
1226 if(ev->window != root)
1227 return;
1228 if((m = recttomon(ev->x_root, ev->y_root, 1, 1)) != mon && mon) {
1229 unfocus(selmon->sel, True);
1230 selmon = m;
1231 focus(NULL);
1232 }
1233 mon = m;
1234 }
1235
1236 void
1237 movemouse(const Arg *arg) {
1238 int x, y, ocx, ocy, nx, ny;
1239 Client *c;
1240 Monitor *m;
1241 XEvent ev;
1242
1243 if(!(c = selmon->sel))
1244 return;
1245 if(c->isfullscreen) /* no support moving fullscreen windows by mouse */
1246 return;
1247 restack(selmon);
1248 ocx = c->x;
1249 ocy = c->y;
1250 if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
1251 None, cursor[CurMove], CurrentTime) != GrabSuccess)
1252 return;
1253 if(!getrootptr(&x, &y))
1254 return;
1255 do {
1256 XMaskEvent(dpy, MOUSEMASK|ExposureMask|SubstructureRedirectMask, &ev);
1257 switch(ev.type) {
1258 case ConfigureRequest:
1259 case Expose:
1260 case MapRequest:
1261 handler[ev.type](&ev);
1262 break;
1263 case MotionNotify:
1264 nx = ocx + (ev.xmotion.x - x);
1265 ny = ocy + (ev.xmotion.y - y);
1266 if(nx >= selmon->wx && nx <= selmon->wx + selmon->ww
1267 && ny >= selmon->wy && ny <= selmon->wy + selmon->wh) {
1268 if(abs(selmon->wx - nx) < snap)
1269 nx = selmon->wx;
1270 else if(abs((selmon->wx + selmon->ww) - (nx + WIDTH(c))) < snap)
1271 nx = selmon->wx + selmon->ww - WIDTH(c);
1272 if(abs(selmon->wy - ny) < snap)
1273 ny = selmon->wy;
1274 else if(abs((selmon->wy + selmon->wh) - (ny + HEIGHT(c))) < snap)
1275 ny = selmon->wy + selmon->wh - HEIGHT(c);
1276 if(!c->isfloating && selmon->lt[selmon->sellt]->arrange
1277 && (abs(nx - c->x) > snap || abs(ny - c->y) > snap))
1278 togglefloating(NULL);
1279 }
1280 if(!selmon->lt[selmon->sellt]->arrange || c->isfloating)
1281 resize(c, nx, ny, c->w, c->h, True);
1282 break;
1283 }
1284 } while(ev.type != ButtonRelease);
1285 XUngrabPointer(dpy, CurrentTime);
1286 if((m = recttomon(c->x, c->y, c->w, c->h)) != selmon) {
1287 sendmon(c, m);
1288 selmon = m;
1289 focus(NULL);
1290 }
1291 }
1292
1293 Client *
1294 nexttiled(Client *c) {
1295 for(; c && (c->isfloating || !ISVISIBLE(c)); c = c->next);
1296 return c;
1297 }
1298
1299 void
1300 pop(Client *c) {
1301 detach(c);
1302 attach(c);
1303 focus(c);
1304 arrange(c->mon);
1305 }
1306
1307 void
1308 propertynotify(XEvent *e) {
1309 Client *c;
1310 Window trans;
1311 XPropertyEvent *ev = &e->xproperty;
1312
1313 if((ev->window == root) && (ev->atom == XA_WM_NAME))
1314 updatestatus();
1315 else if(ev->state == PropertyDelete)
1316 return; /* ignore */
1317 else if((c = wintoclient(ev->window))) {
1318 switch(ev->atom) {
1319 default: break;
1320 case XA_WM_TRANSIENT_FOR:
1321 if(!c->isfloating && (XGetTransientForHint(dpy, c->win, &trans)) &&
1322 (c->isfloating = (wintoclient(trans)) != NULL))
1323 arrange(c->mon);
1324 break;
1325 case XA_WM_NORMAL_HINTS:
1326 updatesizehints(c);
1327 break;
1328 case XA_WM_HINTS:
1329 updatewmhints(c);
1330 drawbars();
1331 break;
1332 }
1333 if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
1334 updatetitle(c);
1335 if(c == c->mon->sel)
1336 drawbar(c->mon);
1337 }
1338 if(ev->atom == netatom[NetWMWindowType])
1339 updatewindowtype(c);
1340 }
1341 }
1342
1343 void
1344 quit(const Arg *arg) {
1345 running = False;
1346 }
1347
1348 Monitor *
1349 recttomon(int x, int y, int w, int h) {
1350 Monitor *m, *r = selmon;
1351 int a, area = 0;
1352
1353 for(m = mons; m; m = m->next)
1354 if((a = INTERSECT(x, y, w, h, m)) > area) {
1355 area = a;
1356 r = m;
1357 }
1358 return r;
1359 }
1360
1361 void
1362 resize(Client *c, int x, int y, int w, int h, Bool interact) {
1363 if(applysizehints(c, &x, &y, &w, &h, interact))
1364 resizeclient(c, x, y, w, h);
1365 }
1366
1367 void
1368 resizeclient(Client *c, int x, int y, int w, int h) {
1369 XWindowChanges wc;
1370
1371 c->oldx = c->x; c->x = wc.x = x;
1372 c->oldy = c->y; c->y = wc.y = y;
1373 c->oldw = c->w; c->w = wc.width = w;
1374 c->oldh = c->h; c->h = wc.height = h;
1375 wc.border_width = c->bw;
1376 XConfigureWindow(dpy, c->win, CWX|CWY|CWWidth|CWHeight|CWBorderWidth, &wc);
1377 configure(c);
1378 XSync(dpy, False);
1379 }
1380
1381 void
1382 resizemouse(const Arg *arg) {
1383 int ocx, ocy;
1384 int nw, nh;
1385 Client *c;
1386 Monitor *m;
1387 XEvent ev;
1388
1389 if(!(c = selmon->sel))
1390 return;
1391 if(c->isfullscreen) /* no support resizing fullscreen windows by mouse */
1392 return;
1393 restack(selmon);
1394 ocx = c->x;
1395 ocy = c->y;
1396 if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
1397 None, cursor[CurResize], CurrentTime) != GrabSuccess)
1398 return;
1399 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->bw - 1, c->h + c->bw - 1);
1400 do {
1401 XMaskEvent(dpy, MOUSEMASK|ExposureMask|SubstructureRedirectMask, &ev);
1402 switch(ev.type) {
1403 case ConfigureRequest:
1404 case Expose:
1405 case MapRequest:
1406 handler[ev.type](&ev);
1407 break;
1408 case MotionNotify:
1409 nw = MAX(ev.xmotion.x - ocx - 2 * c->bw + 1, 1);
1410 nh = MAX(ev.xmotion.y - ocy - 2 * c->bw + 1, 1);
1411 if(c->mon->wx + nw >= selmon->wx && c->mon->wx + nw <= selmon->wx + selmon->ww
1412 && c->mon->wy + nh >= selmon->wy && c->mon->wy + nh <= selmon->wy + selmon->wh)
1413 {
1414 if(!c->isfloating && selmon->lt[selmon->sellt]->arrange
1415 && (abs(nw - c->w) > snap || abs(nh - c->h) > snap))
1416 togglefloating(NULL);
1417 }
1418 if(!selmon->lt[selmon->sellt]->arrange || c->isfloating)
1419 resize(c, c->x, c->y, nw, nh, True);
1420 break;
1421 }
1422 } while(ev.type != ButtonRelease);
1423 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->bw - 1, c->h + c->bw - 1);
1424 XUngrabPointer(dpy, CurrentTime);
1425 while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
1426 if((m = recttomon(c->x, c->y, c->w, c->h)) != selmon) {
1427 sendmon(c, m);
1428 selmon = m;
1429 focus(NULL);
1430 }
1431 }
1432
1433 void
1434 restack(Monitor *m) {
1435 Client *c;
1436 XEvent ev;
1437 XWindowChanges wc;
1438
1439 drawbar(m);
1440 if(!m->sel)
1441 return;
1442 if(m->sel->isfloating || !m->lt[m->sellt]->arrange)
1443 XRaiseWindow(dpy, m->sel->win);
1444 if(m->lt[m->sellt]->arrange) {
1445 wc.stack_mode = Below;
1446 wc.sibling = m->barwin;
1447 for(c = m->stack; c; c = c->snext)
1448 if(!c->isfloating && ISVISIBLE(c)) {
1449 XConfigureWindow(dpy, c->win, CWSibling|CWStackMode, &wc);
1450 wc.sibling = c->win;
1451 }
1452 }
1453 XSync(dpy, False);
1454 while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
1455 }
1456
1457 void
1458 run(void) {
1459 XEvent ev;
1460 /* main event loop */
1461 XSync(dpy, False);
1462 while(running && !XNextEvent(dpy, &ev))
1463 if(handler[ev.type])
1464 handler[ev.type](&ev); /* call handler */
1465 }
1466
1467 void
1468 scan(void) {
1469 unsigned int i, num;
1470 Window d1, d2, *wins = NULL;
1471 XWindowAttributes wa;
1472
1473 if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
1474 for(i = 0; i < num; i++) {
1475 if(!XGetWindowAttributes(dpy, wins[i], &wa)
1476 || wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
1477 continue;
1478 if(wa.map_state == IsViewable || getstate(wins[i]) == IconicState)
1479 manage(wins[i], &wa);
1480 }
1481 for(i = 0; i < num; i++) { /* now the transients */
1482 if(!XGetWindowAttributes(dpy, wins[i], &wa))
1483 continue;
1484 if(XGetTransientForHint(dpy, wins[i], &d1)
1485 && (wa.map_state == IsViewable || getstate(wins[i]) == IconicState))
1486 manage(wins[i], &wa);
1487 }
1488 if(wins)
1489 XFree(wins);
1490 }
1491 }
1492
1493 void
1494 sendmon(Client *c, Monitor *m) {
1495 if(c->mon == m)
1496 return;
1497 unfocus(c, True);
1498 detach(c);
1499 detachstack(c);
1500 c->mon = m;
1501 c->tags = m->tagset[m->seltags]; /* assign tags of target monitor */
1502 attach(c);
1503 attachstack(c);
1504 focus(NULL);
1505 arrange(NULL);
1506 }
1507
1508 void
1509 setclientstate(Client *c, long state) {
1510 long data[] = { state, None };
1511
1512 XChangeProperty(dpy, c->win, wmatom[WMState], wmatom[WMState], 32,
1513 PropModeReplace, (unsigned char *)data, 2);
1514 }
1515
1516 Bool
1517 sendevent(Client *c, Atom proto) {
1518 int n;
1519 Atom *protocols;
1520 Bool exists = False;
1521 XEvent ev;
1522
1523 if(XGetWMProtocols(dpy, c->win, &protocols, &n)) {
1524 while(!exists && n--)
1525 exists = protocols[n] == proto;
1526 XFree(protocols);
1527 }
1528 if(exists) {
1529 ev.type = ClientMessage;
1530 ev.xclient.window = c->win;
1531 ev.xclient.message_type = wmatom[WMProtocols];
1532 ev.xclient.format = 32;
1533 ev.xclient.data.l[0] = proto;
1534 ev.xclient.data.l[1] = CurrentTime;
1535 XSendEvent(dpy, c->win, False, NoEventMask, &ev);
1536 }
1537 return exists;
1538 }
1539
1540 void
1541 setfocus(Client *c) {
1542 if(!c->neverfocus) {
1543 XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
1544 XChangeProperty(dpy, root, netatom[NetActiveWindow],
1545 XA_WINDOW, 32, PropModeReplace,
1546 (unsigned char *) &(c->win), 1);
1547 }
1548 sendevent(c, wmatom[WMTakeFocus]);
1549 }
1550
1551 void
1552 setfullscreen(Client *c, Bool fullscreen) {
1553 if(fullscreen) {
1554 XChangeProperty(dpy, c->win, netatom[NetWMState], XA_ATOM, 32,
1555 PropModeReplace, (unsigned char*)&netatom[NetWMFullscreen], 1);
1556 c->isfullscreen = True;
1557 c->oldstate = c->isfloating;
1558 c->oldbw = c->bw;
1559 c->bw = 0;
1560 c->isfloating = True;
1561 resizeclient(c, c->mon->mx, c->mon->my, c->mon->mw, c->mon->mh);
1562 XRaiseWindow(dpy, c->win);
1563 }
1564 else {
1565 XChangeProperty(dpy, c->win, netatom[NetWMState], XA_ATOM, 32,
1566 PropModeReplace, (unsigned char*)0, 0);
1567 c->isfullscreen = False;
1568 c->isfloating = c->oldstate;
1569 c->bw = c->oldbw;
1570 c->x = c->oldx;
1571 c->y = c->oldy;
1572 c->w = c->oldw;
1573 c->h = c->oldh;
1574 resizeclient(c, c->x, c->y, c->w, c->h);
1575 arrange(c->mon);
1576 }
1577 }
1578
1579 void
1580 setlayout(const Arg *arg) {
1581 if(!arg || !arg->v || arg->v != selmon->lt[selmon->sellt])
1582 selmon->sellt ^= 1;
1583 if(arg && arg->v)
1584 selmon->lt[selmon->sellt] = (Layout *)arg->v;
1585 strncpy(selmon->ltsymbol, selmon->lt[selmon->sellt]->symbol, sizeof selmon->ltsymbol);
1586 if(selmon->sel)
1587 arrange(selmon);
1588 else
1589 drawbar(selmon);
1590 }
1591
1592 /* arg > 1.0 will set mfact absolutly */
1593 void
1594 setmfact(const Arg *arg) {
1595 float f;
1596
1597 if(!arg || !selmon->lt[selmon->sellt]->arrange)
1598 return;
1599 f = arg->f < 1.0 ? arg->f + selmon->mfact : arg->f - 1.0;
1600 if(f < 0.1 || f > 0.9)
1601 return;
1602 selmon->mfact = f;
1603 arrange(selmon);
1604 }
1605
1606 void
1607 setup(void) {
1608 XSetWindowAttributes wa;
1609 int dummy = 0, xkbmajor = XkbMajorVersion, xkbminor = XkbMinorVersion;
1610
1611 /* clean up any zombies immediately */
1612 sigchld(0);
1613
1614 /* init screen */
1615 screen = DefaultScreen(dpy);
1616 root = RootWindow(dpy, screen);
1617 initfont(font);
1618 sw = DisplayWidth(dpy, screen);
1619 sh = DisplayHeight(dpy, screen);
1620 bh = dc.h = dc.font.height + 2;
1621 updategeom();
1622 /* init atoms */
1623 wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
1624 wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
1625 wmatom[WMState] = XInternAtom(dpy, "WM_STATE", False);
1626 wmatom[WMTakeFocus] = XInternAtom(dpy, "WM_TAKE_FOCUS", False);
1627 netatom[NetActiveWindow] = XInternAtom(dpy, "_NET_ACTIVE_WINDOW", False);
1628 netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
1629 netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
1630 netatom[NetWMState] = XInternAtom(dpy, "_NET_WM_STATE", False);
1631 netatom[NetWMFullscreen] = XInternAtom(dpy, "_NET_WM_STATE_FULLSCREEN", False);
1632 netatom[NetWMWindowType] = XInternAtom(dpy, "_NET_WM_WINDOW_TYPE", False);
1633 netatom[NetWMWindowTypeDialog] = XInternAtom(dpy, "_NET_WM_WINDOW_TYPE_DIALOG", False);
1634 netatom[NetClientList] = XInternAtom(dpy, "_NET_CLIENT_LIST", False);
1635 /* init cursors */
1636 cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
1637 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
1638 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
1639 /* init appearance */
1640 dc.norm[ColBorder] = getcolor(normbordercolor);
1641 dc.norm[ColBG] = getcolor(normbgcolor);
1642 dc.norm[ColFG] = getcolor(normfgcolor);
1643 dc.sel[ColBorder] = getcolor(selbordercolor);
1644 dc.sel[ColBG] = getcolor(selbgcolor);
1645 dc.sel[ColFG] = getcolor(selfgcolor);
1646 dc.drawable = XCreatePixmap(dpy, root, DisplayWidth(dpy, screen), bh, DefaultDepth(dpy, screen));
1647 dc.gc = XCreateGC(dpy, root, 0, NULL);
1648 XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
1649 if(!dc.font.set)
1650 XSetFont(dpy, dc.gc, dc.font.xfont->fid);
1651 /* init bars */
1652 updatebars();
1653 updatestatus();
1654 /* EWMH support per view */
1655 XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
1656 PropModeReplace, (unsigned char *) netatom, NetLast);
1657 XDeleteProperty(dpy, root, netatom[NetClientList]);
1658 /* select for events */
1659 wa.cursor = cursor[CurNormal];
1660 wa.event_mask = SubstructureRedirectMask|SubstructureNotifyMask|ButtonPressMask|PointerMotionMask
1661 |EnterWindowMask|LeaveWindowMask|StructureNotifyMask|PropertyChangeMask;
1662 XChangeWindowAttributes(dpy, root, CWEventMask|CWCursor, &wa);
1663 XSelectInput(dpy, root, wa.event_mask);
1664 /* init xkb */
1665 usexkb = XkbQueryExtension(dpy, &dummy, &dummy, &dummy, &xkbmajor, &xkbminor);
1666 grabkeys();
1667 }
1668
1669 void
1670 showhide(Client *c) {
1671 if(!c)
1672 return;
1673 if(ISVISIBLE(c)) { /* show clients top down */
1674 XMoveWindow(dpy, c->win, c->x, c->y);
1675 if((!c->mon->lt[c->mon->sellt]->arrange || c->isfloating) && !c->isfullscreen)
1676 resize(c, c->x, c->y, c->w, c->h, False);
1677 showhide(c->snext);
1678 }
1679 else { /* hide clients bottom up */
1680 showhide(c->snext);
1681 XMoveWindow(dpy, c->win, WIDTH(c) * -2, c->y);
1682 }
1683 }
1684
1685 void
1686 sigchld(int unused) {
1687 if(signal(SIGCHLD, sigchld) == SIG_ERR)
1688 die("Can't install SIGCHLD handler");
1689 while(0 < waitpid(-1, NULL, WNOHANG));
1690 }
1691
1692 void
1693 spawn(const Arg *arg) {
1694 if(fork() == 0) {
1695 if(dpy)
1696 close(ConnectionNumber(dpy));
1697 setsid();
1698 execvp(((char **)arg->v)[0], (char **)arg->v);
1699 fprintf(stderr, "dwm: execvp %s", ((char **)arg->v)[0]);
1700 perror(" failed");
1701 exit(EXIT_SUCCESS);
1702 }
1703 }
1704
1705 void
1706 tag(const Arg *arg) {
1707 if(selmon->sel && arg->ui & TAGMASK) {
1708 selmon->sel->tags = arg->ui & TAGMASK;
1709 focus(NULL);
1710 arrange(selmon);
1711 }
1712 }
1713
1714 void
1715 tagmon(const Arg *arg) {
1716 if(!selmon->sel || !mons->next)
1717 return;
1718 sendmon(selmon->sel, dirtomon(arg->i));
1719 }
1720
1721 int
1722 textnw(const char *text, unsigned int len) {
1723 XRectangle r;
1724
1725 if(dc.font.set) {
1726 XmbTextExtents(dc.font.set, text, len, NULL, &r);
1727 return r.width;
1728 }
1729 return XTextWidth(dc.font.xfont, text, len);
1730 }
1731
1732 void
1733 tile(Monitor *m) {
1734 unsigned int i, n, h, mw, my, ty;
1735 Client *c;
1736
1737 for(n = 0, c = nexttiled(m->clients); c; c = nexttiled(c->next), n++);
1738 if(n == 0)
1739 return;
1740
1741 if(n > m->nmaster)
1742 mw = m->nmaster ? m->ww * m->mfact : 0;
1743 else
1744 mw = m->ww;
1745 for(i = my = ty = 0, c = nexttiled(m->clients); c; c = nexttiled(c->next), i++)
1746 if(i < m->nmaster) {
1747 h = (m->wh - my) / (MIN(n, m->nmaster) - i);
1748 resize(c, m->wx, m->wy + my, mw - (2*c->bw), h - (2*c->bw), False);
1749 my += HEIGHT(c);
1750 }
1751 else {
1752 h = (m->wh - ty) / (n - i);
1753 resize(c, m->wx + mw, m->wy + ty, m->ww - mw - (2*c->bw), h - (2*c->bw), False);
1754 ty += HEIGHT(c);
1755 }
1756 }
1757
1758 void
1759 togglebar(const Arg *arg) {
1760 selmon->showbar = !selmon->showbar;
1761 updatebarpos(selmon);
1762 XMoveResizeWindow(dpy, selmon->barwin, selmon->wx, selmon->by, selmon->ww, bh);
1763 arrange(selmon);
1764 }
1765
1766 void
1767 togglefloating(const Arg *arg) {
1768 if(!selmon->sel)
1769 return;
1770 if(selmon->sel->isfullscreen) /* no support for fullscreen windows */
1771 return;
1772 selmon->sel->isfloating = !selmon->sel->isfloating || selmon->sel->isfixed;
1773 if(selmon->sel->isfloating)
1774 resize(selmon->sel, selmon->sel->x, selmon->sel->y,
1775 selmon->sel->w, selmon->sel->h, False);
1776 arrange(selmon);
1777 }
1778
1779 void
1780 toggletag(const Arg *arg) {
1781 unsigned int newtags;
1782
1783 if(!selmon->sel)
1784 return;
1785 newtags = selmon->sel->tags ^ (arg->ui & TAGMASK);
1786 if(newtags) {
1787 selmon->sel->tags = newtags;
1788 focus(NULL);
1789 arrange(selmon);
1790 }
1791 }
1792
1793 void
1794 toggleview(const Arg *arg) {
1795 unsigned int newtagset = selmon->tagset[selmon->seltags] ^ (arg->ui & TAGMASK);
1796
1797 if(newtagset) {
1798 selmon->tagset[selmon->seltags] = newtagset;
1799 focus(NULL);
1800 arrange(selmon);
1801 }
1802 }
1803
1804 void
1805 unfocus(Client *c, Bool setfocus) {
1806 if(!c)
1807 return;
1808 grabbuttons(c, False);
1809 XSetWindowBorder(dpy, c->win, dc.norm[ColBorder]);
1810 if(setfocus) {
1811 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
1812 XDeleteProperty(dpy, root, netatom[NetActiveWindow]);
1813 }
1814 }
1815
1816 void
1817 unmanage(Client *c, Bool destroyed) {
1818 Monitor *m = c->mon;
1819 XWindowChanges wc;
1820
1821 /* The server grab construct avoids race conditions. */
1822 detach(c);
1823 detachstack(c);
1824 if(!destroyed) {
1825 wc.border_width = c->oldbw;
1826 XGrabServer(dpy);
1827 XSetErrorHandler(xerrordummy);
1828 XConfigureWindow(dpy, c->win, CWBorderWidth, &wc); /* restore border */
1829 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
1830 setclientstate(c, WithdrawnState);
1831 XSync(dpy, False);
1832 XSetErrorHandler(xerror);
1833 XUngrabServer(dpy);
1834 }
1835 free(c);
1836 focus(NULL);
1837 updateclientlist();
1838 arrange(m);
1839 }
1840
1841 void
1842 unmapnotify(XEvent *e) {
1843 Client *c;
1844 XUnmapEvent *ev = &e->xunmap;
1845
1846 if((c = wintoclient(ev->window))) {
1847 if(ev->send_event)
1848 setclientstate(c, WithdrawnState);
1849 else
1850 unmanage(c, False);
1851 }
1852 }
1853
1854 void
1855 updatebars(void) {
1856 Monitor *m;
1857 XSetWindowAttributes wa = {
1858 .override_redirect = True,
1859 .background_pixmap = ParentRelative,
1860 .event_mask = ButtonPressMask|ExposureMask
1861 };
1862 for(m = mons; m; m = m->next) {
1863 if (m->barwin)
1864 continue;
1865 m->barwin = XCreateWindow(dpy, root, m->wx, m->by, m->ww, bh, 0, DefaultDepth(dpy, screen),
1866 CopyFromParent, DefaultVisual(dpy, screen),
1867 CWOverrideRedirect|CWBackPixmap|CWEventMask, &wa);
1868 XDefineCursor(dpy, m->barwin, cursor[CurNormal]);
1869 XMapRaised(dpy, m->barwin);
1870 }
1871 }
1872
1873 void
1874 updatebarpos(Monitor *m) {
1875 m->wy = m->my;
1876 m->wh = m->mh;
1877 if(m->showbar) {
1878 m->wh -= bh;
1879 m->by = m->topbar ? m->wy : m->wy + m->wh;
1880 m->wy = m->topbar ? m->wy + bh : m->wy;
1881 }
1882 else
1883 m->by = -bh;
1884 }
1885
1886 void
1887 updateclientlist() {
1888 Client *c;
1889 Monitor *m;
1890
1891 XDeleteProperty(dpy, root, netatom[NetClientList]);
1892 for(m = mons; m; m = m->next)
1893 for(c = m->clients; c; c = c->next)
1894 XChangeProperty(dpy, root, netatom[NetClientList],
1895 XA_WINDOW, 32, PropModeAppend,
1896 (unsigned char *) &(c->win), 1);
1897 }
1898
1899 Bool
1900 updategeom(void) {
1901 Bool dirty = False;
1902
1903 #ifdef XINERAMA
1904 if(XineramaIsActive(dpy)) {
1905 int i, j, n, nn;
1906 Client *c;
1907 Monitor *m;
1908 XineramaScreenInfo *info = XineramaQueryScreens(dpy, &nn);
1909 XineramaScreenInfo *unique = NULL;
1910
1911 for(n = 0, m = mons; m; m = m->next, n++);
1912 /* only consider unique geometries as separate screens */
1913 if(!(unique = (XineramaScreenInfo *)malloc(sizeof(XineramaScreenInfo) * nn)))
1914 die("fatal: could not malloc() %u bytes\n", sizeof(XineramaScreenInfo) * nn);
1915 for(i = 0, j = 0; i < nn; i++)
1916 if(isuniquegeom(unique, j, &info[i]))
1917 memcpy(&unique[j++], &info[i], sizeof(XineramaScreenInfo));
1918 XFree(info);
1919 nn = j;
1920 if(n <= nn) {
1921 for(i = 0; i < (nn - n); i++) { /* new monitors available */
1922 for(m = mons; m && m->next; m = m->next);
1923 if(m)
1924 m->next = createmon();
1925 else
1926 mons = createmon();
1927 }
1928 for(i = 0, m = mons; i < nn && m; m = m->next, i++)
1929 if(i >= n
1930 || (unique[i].x_org != m->mx || unique[i].y_org != m->my
1931 || unique[i].width != m->mw || unique[i].height != m->mh))
1932 {
1933 dirty = True;
1934 m->num = i;
1935 m->mx = m->wx = unique[i].x_org;
1936 m->my = m->wy = unique[i].y_org;
1937 m->mw = m->ww = unique[i].width;
1938 m->mh = m->wh = unique[i].height;
1939 updatebarpos(m);
1940 }
1941 }
1942 else { /* less monitors available nn < n */
1943 for(i = nn; i < n; i++) {
1944 for(m = mons; m && m->next; m = m->next);
1945 while(m->clients) {
1946 dirty = True;
1947 c = m->clients;
1948 m->clients = c->next;
1949 detachstack(c);
1950 c->mon = mons;
1951 attach(c);
1952 attachstack(c);
1953 }
1954 if(m == selmon)
1955 selmon = mons;
1956 cleanupmon(m);
1957 }
1958 }
1959 free(unique);
1960 }
1961 else
1962 #endif /* XINERAMA */
1963 /* default monitor setup */
1964 {
1965 if(!mons)
1966 mons = createmon();
1967 if(mons->mw != sw || mons->mh != sh) {
1968 dirty = True;
1969 mons->mw = mons->ww = sw;
1970 mons->mh = mons->wh = sh;
1971 updatebarpos(mons);
1972 }
1973 }
1974 if(dirty) {
1975 selmon = mons;
1976 selmon = wintomon(root);
1977 }
1978 return dirty;
1979 }
1980
1981 void
1982 updatenumlockmask(void) {
1983 unsigned int i, j;
1984 XModifierKeymap *modmap;
1985
1986 numlockmask = 0;
1987 modmap = XGetModifierMapping(dpy);
1988 for(i = 0; i < 8; i++)
1989 for(j = 0; j < modmap->max_keypermod; j++)
1990 if(modmap->modifiermap[i * modmap->max_keypermod + j]
1991 == XKeysymToKeycode(dpy, XK_Num_Lock))
1992 numlockmask = (1 << i);
1993 XFreeModifiermap(modmap);
1994 }
1995
1996 void
1997 updatesizehints(Client *c) {
1998 long msize;
1999 XSizeHints size;
2000
2001 if(!XGetWMNormalHints(dpy, c->win, &size, &msize))
2002 /* size is uninitialized, ensure that size.flags aren't used */
2003 size.flags = PSize;
2004 if(size.flags & PBaseSize) {
2005 c->basew = size.base_width;
2006 c->baseh = size.base_height;
2007 }
2008 else if(size.flags & PMinSize) {
2009 c->basew = size.min_width;
2010 c->baseh = size.min_height;
2011 }
2012 else
2013 c->basew = c->baseh = 0;
2014 if(size.flags & PResizeInc) {
2015 c->incw = size.width_inc;
2016 c->inch = size.height_inc;
2017 }
2018 else
2019 c->incw = c->inch = 0;
2020 if(size.flags & PMaxSize) {
2021 c->maxw = size.max_width;
2022 c->maxh = size.max_height;
2023 }
2024 else
2025 c->maxw = c->maxh = 0;
2026 if(size.flags & PMinSize) {
2027 c->minw = size.min_width;
2028 c->minh = size.min_height;
2029 }
2030 else if(size.flags & PBaseSize) {
2031 c->minw = size.base_width;
2032 c->minh = size.base_height;
2033 }
2034 else
2035 c->minw = c->minh = 0;
2036 if(size.flags & PAspect) {
2037 c->mina = (float)size.min_aspect.y / size.min_aspect.x;
2038 c->maxa = (float)size.max_aspect.x / size.max_aspect.y;
2039 }
2040 else
2041 c->maxa = c->mina = 0.0;
2042 c->isfixed = (c->maxw && c->minw && c->maxh && c->minh
2043 && c->maxw == c->minw && c->maxh == c->minh);
2044 }
2045
2046 void
2047 updatetitle(Client *c) {
2048 if(!gettextprop(c->win, netatom[NetWMName], c->name, sizeof c->name))
2049 gettextprop(c->win, XA_WM_NAME, c->name, sizeof c->name);
2050 if(c->name[0] == '\0') /* hack to mark broken clients */
2051 strcpy(c->name, broken);
2052 }
2053
2054 void
2055 updatestatus(void) {
2056 if(!gettextprop(root, XA_WM_NAME, stext, sizeof(stext)))
2057 strcpy(stext, "dwm-"VERSION);
2058 drawbar(selmon);
2059 }
2060
2061 void
2062 updatewindowtype(Client *c) {
2063 Atom state = getatomprop(c, netatom[NetWMState]);
2064 Atom wtype = getatomprop(c, netatom[NetWMWindowType]);
2065
2066 if(state == netatom[NetWMFullscreen])
2067 setfullscreen(c, True);
2068 if(wtype == netatom[NetWMWindowTypeDialog])
2069 c->isfloating = True;
2070 }
2071
2072 void
2073 updatewmhints(Client *c) {
2074 XWMHints *wmh;
2075
2076 if((wmh = XGetWMHints(dpy, c->win))) {
2077 if(c == selmon->sel && wmh->flags & XUrgencyHint) {
2078 wmh->flags &= ~XUrgencyHint;
2079 XSetWMHints(dpy, c->win, wmh);
2080 }
2081 else
2082 c->isurgent = (wmh->flags & XUrgencyHint) ? True : False;
2083 if(wmh->flags & InputHint)
2084 c->neverfocus = !wmh->input;
2085 else
2086 c->neverfocus = False;
2087 XFree(wmh);
2088 }
2089 }
2090
2091 void
2092 view(const Arg *arg) {
2093 if((arg->ui & TAGMASK) == selmon->tagset[selmon->seltags])
2094 return;
2095 selmon->seltags ^= 1; /* toggle sel tagset */
2096 if(arg->ui & TAGMASK)
2097 selmon->tagset[selmon->seltags] = arg->ui & TAGMASK;
2098 focus(NULL);
2099 arrange(selmon);
2100 }
2101
2102 Client *
2103 wintoclient(Window w) {
2104 Client *c;
2105 Monitor *m;
2106
2107 for(m = mons; m; m = m->next)
2108 for(c = m->clients; c; c = c->next)
2109 if(c->win == w)
2110 return c;
2111 return NULL;
2112 }
2113
2114 Monitor *
2115 wintomon(Window w) {
2116 int x, y;
2117 Client *c;
2118 Monitor *m;
2119
2120 if(w == root && getrootptr(&x, &y))
2121 return recttomon(x, y, 1, 1);
2122 for(m = mons; m; m = m->next)
2123 if(w == m->barwin)
2124 return m;
2125 if((c = wintoclient(w)))
2126 return c->mon;
2127 return selmon;
2128 }
2129
2130 /* There's no way to check accesses to destroyed windows, thus those cases are
2131 * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
2132 * default error handler, which may call exit. */
2133 int
2134 xerror(Display *dpy, XErrorEvent *ee) {
2135 if(ee->error_code == BadWindow
2136 || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
2137 || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
2138 || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
2139 || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
2140 || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
2141 || (ee->request_code == X_GrabButton && ee->error_code == BadAccess)
2142 || (ee->request_code == X_GrabKey && ee->error_code == BadAccess)
2143 || (ee->request_code == X_CopyArea && ee->error_code == BadDrawable))
2144 return 0;
2145 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
2146 ee->request_code, ee->error_code);
2147 return xerrorxlib(dpy, ee); /* may call exit */
2148 }
2149
2150 int
2151 xerrordummy(Display *dpy, XErrorEvent *ee) {
2152 return 0;
2153 }
2154
2155 /* Startup Error handler to check if another window manager
2156 * is already running. */
2157 int
2158 xerrorstart(Display *dpy, XErrorEvent *ee) {
2159 die("dwm: another window manager is already running\n");
2160 return -1;
2161 }
2162
2163 void
2164 zoom(const Arg *arg) {
2165 Client *c = selmon->sel;
2166
2167 if(!selmon->lt[selmon->sellt]->arrange
2168 || (selmon->sel && selmon->sel->isfloating))
2169 return;
2170 if(c == nexttiled(selmon->clients))
2171 if(!c || !(c = nexttiled(c->next)))
2172 return;
2173 pop(c);
2174 }
2175
2176 int
2177 main(int argc, char *argv[]) {
2178 if(argc == 2 && !strcmp("-v", argv[1]))
2179 die("dwm-"VERSION", © 2006-2012 dwm engineers, see LICENSE for details\n");
2180 else if(argc != 1)
2181 die("usage: dwm [-v]\n");
2182 if(!setlocale(LC_CTYPE, "") || !XSupportsLocale())
2183 fputs("warning: no locale support\n", stderr);
2184 if(!(dpy = XOpenDisplay(NULL)))
2185 die("dwm: cannot open display\n");
2186 checkotherwm();
2187 setup();
2188 scan();
2189 run();
2190 cleanup();
2191 XCloseDisplay(dpy);
2192 return EXIT_SUCCESS;
2193 }