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[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 * Calls to fetch an X event from the event queue are blocking. Due reading
10 * status text from standard input, a select()-driven main loop has been
11 * implemented which selects for reads on the X connection and STDIN_FILENO to
12 * handle all data smoothly. The event handlers of dwm are organized in an
13 * array which is accessed whenever a new event has been fetched. This allows
14 * event dispatching in O(1) time.
15 *
16 * Each child of the root window is called a client, except windows which have
17 * set the override_redirect flag. Clients are organized in a global
18 * doubly-linked client list, the focus history is remembered through a global
19 * stack list. Each client contains an array of Bools of the same size as the
20 * global tags array to indicate the tags of a client.
21 *
22 * Keys and tagging rules are organized as arrays and defined in config.h.
23 *
24 * To understand everything else, start reading main().
25 */
26 #include <errno.h>
27 #include <locale.h>
28 #include <stdarg.h>
29 #include <stdio.h>
30 #include <stdlib.h>
31 #include <string.h>
32 #include <unistd.h>
33 #include <sys/select.h>
34 #include <sys/types.h>
35 #include <sys/wait.h>
36 #include <regex.h>
37 #include <X11/cursorfont.h>
38 #include <X11/keysym.h>
39 #include <X11/Xatom.h>
40 #include <X11/Xlib.h>
41 #include <X11/Xproto.h>
42 #include <X11/Xutil.h>
43 //#ifdef XINERAMA
44 #include <X11/extensions/Xinerama.h>
45 //#endif
46
47 /* macros */
48 #define BUTTONMASK (ButtonPressMask | ButtonReleaseMask)
49 #define CLEANMASK(mask) (mask & ~(numlockmask | LockMask))
50 #define LENGTH(x) (sizeof x / sizeof x[0])
51 #define MAXTAGLEN 16
52 #define MOUSEMASK (BUTTONMASK | PointerMotionMask)
53
54
55 /* enums */
56 enum { BarTop, BarBot, BarOff }; /* bar position */
57 enum { CurNormal, CurResize, CurMove, CurLast }; /* cursor */
58 enum { ColBorder, ColFG, ColBG, ColLast }; /* color */
59 enum { NetSupported, NetWMName, NetLast }; /* EWMH atoms */
60 enum { WMProtocols, WMDelete, WMName, WMState, WMLast };/* default atoms */
61
62 /* typedefs */
63 typedef struct Client Client;
64 struct Client {
65 char name[256];
66 int x, y, w, h;
67 int basew, baseh, incw, inch, maxw, maxh, minw, minh;
68 int minax, maxax, minay, maxay;
69 long flags;
70 unsigned int border, oldborder;
71 Bool isbanned, isfixed, isfloating;
72 Bool *tags;
73 Client *next;
74 Client *prev;
75 Client *snext;
76 Window win;
77 int monitor;
78 };
79
80 typedef struct {
81 int x, y, w, h;
82 unsigned long norm[ColLast];
83 unsigned long sel[ColLast];
84 Drawable drawable;
85 GC gc;
86 struct {
87 int ascent;
88 int descent;
89 int height;
90 XFontSet set;
91 XFontStruct *xfont;
92 } font;
93 } DC; /* draw context */
94
95 typedef struct {
96 unsigned long mod;
97 KeySym keysym;
98 void (*func)(const char *arg);
99 const char *arg;
100 } Key;
101
102 typedef struct {
103 const char *symbol;
104 void (*arrange)(void);
105 } Layout;
106
107 typedef struct {
108 const char *prop;
109 const char *tags;
110 Bool isfloating;
111 int monitor;
112 } Rule;
113
114 typedef struct {
115 regex_t *propregex;
116 regex_t *tagregex;
117 } Regs;
118
119 typedef struct {
120 int screen;
121 Window root;
122 Window barwin;
123 int sx, sy, sw, sh, wax, way, wah, waw;
124 DC dc;
125 Bool *seltags;
126 Bool *prevtags;
127 Layout *layout;
128 double mwfact;
129 } Monitor;
130
131 /* function declarations */
132 void applyrules(Client *c);
133 void arrange(void);
134 void attach(Client *c);
135 void attachstack(Client *c);
136 void ban(Client *c);
137 void buttonpress(XEvent *e);
138 void checkotherwm(void);
139 void cleanup(void);
140 void compileregs(void);
141 void configure(Client *c);
142 void configurenotify(XEvent *e);
143 void configurerequest(XEvent *e);
144 void destroynotify(XEvent *e);
145 void detach(Client *c);
146 void detachstack(Client *c);
147 void drawbar(void);
148 void drawsquare(Monitor *, Bool filled, Bool empty, unsigned long col[ColLast]);
149 void drawtext(Monitor *, const char *text, unsigned long col[ColLast]);
150 void *emallocz(unsigned int size);
151 void enternotify(XEvent *e);
152 void eprint(const char *errstr, ...);
153 void expose(XEvent *e);
154 void floating(void); /* default floating layout */
155 void focus(Client *c);
156 void focusin(XEvent *e);
157 void focusnext(const char *arg);
158 void focusprev(const char *arg);
159 Client *getclient(Window w);
160 unsigned long getcolor(const char *colstr, int screen);
161 long getstate(Window w);
162 Bool gettextprop(Window w, Atom atom, char *text, unsigned int size);
163 void grabbuttons(Client *c, Bool focused);
164 void grabkeys(void);
165 unsigned int idxoftag(const char *tag);
166 void initfont(Monitor*, const char *fontstr);
167 Bool isoccupied(Monitor *m, unsigned int t);
168 Bool isprotodel(Client *c);
169 Bool isvisible(Client *c, int monitor);
170 void keypress(XEvent *e);
171 void killclient(const char *arg);
172 void manage(Window w, XWindowAttributes *wa);
173 void mappingnotify(XEvent *e);
174 void maprequest(XEvent *e);
175 void movemouse(Client *c);
176 Client *nexttiled(Client *c, int monitor);
177 void propertynotify(XEvent *e);
178 void quit(const char *arg);
179 void reapply(const char *arg);
180 void resize(Client *c, int x, int y, int w, int h, Bool sizehints);
181 void resizemouse(Client *c);
182 void restack(void);
183 void run(void);
184 void scan(void);
185 void setclientstate(Client *c, long state);
186 void setlayout(const char *arg);
187 void setmwfact(const char *arg);
188 void setup(void);
189 void spawn(const char *arg);
190 void tag(const char *arg);
191 unsigned int textnw(Monitor*, const char *text, unsigned int len);
192 unsigned int textw(Monitor*, const char *text);
193 void tile(void);
194 void togglebar(const char *arg);
195 void togglefloating(const char *arg);
196 void toggletag(const char *arg);
197 void toggleview(const char *arg);
198 void unban(Client *c);
199 void unmanage(Client *c);
200 void unmapnotify(XEvent *e);
201 void updatebarpos(Monitor *m);
202 void updatesizehints(Client *c);
203 void updatetitle(Client *c);
204 void view(const char *arg);
205 void viewprevtag(const char *arg); /* views previous selected tags */
206 int xerror(Display *dpy, XErrorEvent *ee);
207 int xerrordummy(Display *dsply, XErrorEvent *ee);
208 int xerrorstart(Display *dsply, XErrorEvent *ee);
209 void zoom(const char *arg);
210 int monitorat(void);
211 void movetomonitor(const char *arg);
212 void selectmonitor(const char *arg);
213
214 /* variables */
215 char stext[256];
216 int mcount = 1;
217 int (*xerrorxlib)(Display *, XErrorEvent *);
218 unsigned int bh, bpos;
219 unsigned int blw = 0;
220 unsigned int numlockmask = 0;
221 void (*handler[LASTEvent]) (XEvent *) = {
222 [ButtonPress] = buttonpress,
223 [ConfigureRequest] = configurerequest,
224 [ConfigureNotify] = configurenotify,
225 [DestroyNotify] = destroynotify,
226 [EnterNotify] = enternotify,
227 [Expose] = expose,
228 [FocusIn] = focusin,
229 [KeyPress] = keypress,
230 [MappingNotify] = mappingnotify,
231 [MapRequest] = maprequest,
232 [PropertyNotify] = propertynotify,
233 [UnmapNotify] = unmapnotify
234 };
235 Atom wmatom[WMLast], netatom[NetLast];
236 Bool isxinerama = False;
237 Bool domwfact = True;
238 Bool dozoom = True;
239 Bool otherwm, readin;
240 Bool running = True;
241 Client *clients = NULL;
242 Client *sel = NULL;
243 Client *stack = NULL;
244 Cursor cursor[CurLast];
245 Display *dpy;
246 DC dc = {0};
247 Regs *regs = NULL;
248 Monitor *monitors;
249 int selmonitor = 0;
250
251 /* configuration, allows nested code to access above variables */
252 #include "config.h"
253
254 //Bool prevtags[LENGTH(tags)];
255
256 /* function implementations */
257 void
258 applyrules(Client *c) {
259 static char buf[512];
260 unsigned int i, j;
261 regmatch_t tmp;
262 Bool matched_tag = False;
263 Bool matched_monitor = False;
264 XClassHint ch = { 0 };
265
266 /* rule matching */
267 XGetClassHint(dpy, c->win, &ch);
268 snprintf(buf, sizeof buf, "%s:%s:%s",
269 ch.res_class ? ch.res_class : "",
270 ch.res_name ? ch.res_name : "", c->name);
271 for(i = 0; i < LENGTH(rules); i++)
272 if(regs[i].propregex && !regexec(regs[i].propregex, buf, 1, &tmp, 0)) {
273 if (rules[i].monitor >= 0 && rules[i].monitor < mcount) {
274 matched_monitor = True;
275 c->monitor = rules[i].monitor;
276 }
277
278 c->isfloating = rules[i].isfloating;
279 for(j = 0; regs[i].tagregex && j < LENGTH(tags); j++) {
280 if(!regexec(regs[i].tagregex, tags[j], 1, &tmp, 0)) {
281 matched_tag = True;
282 c->tags[j] = True;
283 }
284 }
285 }
286 if(ch.res_class)
287 XFree(ch.res_class);
288 if(ch.res_name)
289 XFree(ch.res_name);
290 if(!matched_tag)
291 memcpy(c->tags, monitors[monitorat()].seltags, sizeof initags);
292 if (!matched_monitor)
293 c->monitor = monitorat();
294 }
295
296 void
297 arrange(void) {
298 Client *c;
299
300 for(c = clients; c; c = c->next)
301 if(isvisible(c, c->monitor))
302 unban(c);
303 else
304 ban(c);
305
306 monitors[selmonitor].layout->arrange();
307 focus(NULL);
308 restack();
309 }
310
311 void
312 attach(Client *c) {
313 if(clients)
314 clients->prev = c;
315 c->next = clients;
316 clients = c;
317 }
318
319 void
320 attachstack(Client *c) {
321 c->snext = stack;
322 stack = c;
323 }
324
325 void
326 ban(Client *c) {
327 if(c->isbanned)
328 return;
329 XMoveWindow(dpy, c->win, c->x + 3 * monitors[c->monitor].sw, c->y);
330 c->isbanned = True;
331 }
332
333 void
334 buttonpress(XEvent *e) {
335 unsigned int i, x;
336 Client *c;
337 XButtonPressedEvent *ev = &e->xbutton;
338
339 Monitor *m = &monitors[monitorat()];
340
341 if(ev->window == m->barwin) {
342 x = 0;
343 for(i = 0; i < LENGTH(tags); i++) {
344 x += textw(m, tags[i]);
345 if(ev->x < x) {
346 if(ev->button == Button1) {
347 if(ev->state & MODKEY)
348 tag(tags[i]);
349 else
350 view(tags[i]);
351 }
352 else if(ev->button == Button3) {
353 if(ev->state & MODKEY)
354 toggletag(tags[i]);
355 else
356 toggleview(tags[i]);
357 }
358 return;
359 }
360 }
361 if((ev->x < x + blw) && ev->button == Button1)
362 setlayout(NULL);
363 }
364 else if((c = getclient(ev->window))) {
365 focus(c);
366 if(CLEANMASK(ev->state) != MODKEY)
367 return;
368 if(ev->button == Button1) {
369 if((m->layout->arrange == floating) || c->isfloating)
370 restack();
371 else
372 togglefloating(NULL);
373 movemouse(c);
374 }
375 else if(ev->button == Button2) {
376 if((floating != m->layout->arrange) && c->isfloating)
377 togglefloating(NULL);
378 else
379 zoom(NULL);
380 }
381 else if(ev->button == Button3 && !c->isfixed) {
382 if((floating == m->layout->arrange) || c->isfloating)
383 restack();
384 else
385 togglefloating(NULL);
386 resizemouse(c);
387 }
388 }
389 }
390
391 void
392 checkotherwm(void) {
393 otherwm = False;
394 XSetErrorHandler(xerrorstart);
395
396 /* this causes an error if some other window manager is running */
397 XSelectInput(dpy, DefaultRootWindow(dpy), SubstructureRedirectMask);
398 XSync(dpy, False);
399 if(otherwm)
400 eprint("dwm: another window manager is already running\n");
401 XSync(dpy, False);
402 XSetErrorHandler(NULL);
403 xerrorxlib = XSetErrorHandler(xerror);
404 XSync(dpy, False);
405 }
406
407 void
408 cleanup(void) {
409 unsigned int i;
410 close(STDIN_FILENO);
411 while(stack) {
412 unban(stack);
413 unmanage(stack);
414 }
415 for(i = 0; i < mcount; i++) {
416 Monitor *m = &monitors[i];
417 if(m->dc.font.set)
418 XFreeFontSet(dpy, m->dc.font.set);
419 else
420 XFreeFont(dpy, m->dc.font.xfont);
421 XUngrabKey(dpy, AnyKey, AnyModifier, m->root);
422 XFreePixmap(dpy, m->dc.drawable);
423 XFreeGC(dpy, m->dc.gc);
424 XDestroyWindow(dpy, m->barwin);
425 XFreeCursor(dpy, cursor[CurNormal]);
426 XFreeCursor(dpy, cursor[CurResize]);
427 XFreeCursor(dpy, cursor[CurMove]);
428 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
429 XSync(dpy, False);
430 }
431 }
432
433 void
434 compileregs(void) {
435 unsigned int i;
436 regex_t *reg;
437
438 if(regs)
439 return;
440 regs = emallocz(LENGTH(rules) * sizeof(Regs));
441 for(i = 0; i < LENGTH(rules); i++) {
442 if(rules[i].prop) {
443 reg = emallocz(sizeof(regex_t));
444 if(regcomp(reg, rules[i].prop, REG_EXTENDED))
445 free(reg);
446 else
447 regs[i].propregex = reg;
448 }
449 if(rules[i].tags) {
450 reg = emallocz(sizeof(regex_t));
451 if(regcomp(reg, rules[i].tags, REG_EXTENDED))
452 free(reg);
453 else
454 regs[i].tagregex = reg;
455 }
456 }
457 }
458
459 void
460 configure(Client *c) {
461 XConfigureEvent ce;
462
463 ce.type = ConfigureNotify;
464 ce.display = dpy;
465 ce.event = c->win;
466 ce.window = c->win;
467 ce.x = c->x;
468 ce.y = c->y;
469 ce.width = c->w;
470 ce.height = c->h;
471 ce.border_width = c->border;
472 ce.above = None;
473 ce.override_redirect = False;
474 XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&ce);
475 }
476
477 void
478 configurenotify(XEvent *e) {
479 XConfigureEvent *ev = &e->xconfigure;
480 Monitor *m = &monitors[selmonitor];
481
482 if(ev->window == m->root && (ev->width != m->sw || ev->height != m->sh)) {
483 m->sw = ev->width;
484 m->sh = ev->height;
485 XFreePixmap(dpy, dc.drawable);
486 dc.drawable = XCreatePixmap(dpy, m->root, m->sw, bh, DefaultDepth(dpy, m->screen));
487 XResizeWindow(dpy, m->barwin, m->sw, bh);
488 updatebarpos(m);
489 arrange();
490 }
491 }
492
493 void
494 configurerequest(XEvent *e) {
495 Client *c;
496 XConfigureRequestEvent *ev = &e->xconfigurerequest;
497 XWindowChanges wc;
498
499 if((c = getclient(ev->window))) {
500 Monitor *m = &monitors[c->monitor];
501 if(ev->value_mask & CWBorderWidth)
502 c->border = ev->border_width;
503 if(c->isfixed || c->isfloating || (floating == m->layout->arrange)) {
504 if(ev->value_mask & CWX)
505 c->x = m->sx+ev->x;
506 if(ev->value_mask & CWY)
507 c->y = m->sy+ev->y;
508 if(ev->value_mask & CWWidth)
509 c->w = ev->width;
510 if(ev->value_mask & CWHeight)
511 c->h = ev->height;
512 if((c->x - m->sx + c->w) > m->sw && c->isfloating)
513 c->x = m->sx + (m->sw / 2 - c->w / 2); /* center in x direction */
514 if((c->y - m->sy + c->h) > m->sh && c->isfloating)
515 c->y = m->sy + (m->sh / 2 - c->h / 2); /* center in y direction */
516 if((ev->value_mask & (CWX | CWY))
517 && !(ev->value_mask & (CWWidth | CWHeight)))
518 configure(c);
519 if(isvisible(c, monitorat()))
520 XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
521 }
522 else
523 configure(c);
524 }
525 else {
526 wc.x = ev->x;
527 wc.y = ev->y;
528 wc.width = ev->width;
529 wc.height = ev->height;
530 wc.border_width = ev->border_width;
531 wc.sibling = ev->above;
532 wc.stack_mode = ev->detail;
533 XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
534 }
535 XSync(dpy, False);
536 }
537
538 void
539 destroynotify(XEvent *e) {
540 Client *c;
541 XDestroyWindowEvent *ev = &e->xdestroywindow;
542
543 if((c = getclient(ev->window)))
544 unmanage(c);
545 }
546
547 void
548 detach(Client *c) {
549 if(c->prev)
550 c->prev->next = c->next;
551 if(c->next)
552 c->next->prev = c->prev;
553 if(c == clients)
554 clients = c->next;
555 c->next = c->prev = NULL;
556 }
557
558 void
559 detachstack(Client *c) {
560 Client **tc;
561
562 for(tc=&stack; *tc && *tc != c; tc=&(*tc)->snext);
563 *tc = c->snext;
564 }
565
566 void
567 drawbar(void) {
568 int i, j, x;
569
570 for(i = 0; i < mcount; i++) {
571 Monitor *m = &monitors[i];
572 m->dc.x = 0;
573 for(j = 0; j < LENGTH(tags); j++) {
574 m->dc.w = textw(m, tags[j]);
575 if(m->seltags[j]) {
576 drawtext(m, tags[j], m->dc.sel);
577 drawsquare(m, sel && sel->tags[j] && sel->monitor == selmonitor, isoccupied(m, j), m->dc.sel);
578 }
579 else {
580 drawtext(m, tags[j], m->dc.norm);
581 drawsquare(m, sel && sel->tags[j] && sel->monitor == selmonitor, isoccupied(m, j), m->dc.norm);
582 }
583 m->dc.x += m->dc.w;
584 }
585 m->dc.w = blw;
586 drawtext(m, m->layout->symbol, m->dc.norm);
587 x = m->dc.x + m->dc.w;
588 m->dc.w = textw(m, stext);
589 m->dc.x = m->sw - m->dc.w;
590 if(m->dc.x < x) {
591 m->dc.x = x;
592 m->dc.w = m->sw - x;
593 }
594 drawtext(m, stext, m->dc.norm);
595 if((m->dc.w = m->dc.x - x) > bh) {
596 m->dc.x = x;
597 if(sel && sel->monitor == selmonitor) {
598 drawtext(m, sel->name, m->dc.sel);
599 drawsquare(m, False, sel->isfloating, m->dc.sel);
600 }
601 else
602 drawtext(m, NULL, m->dc.norm);
603 }
604 XCopyArea(dpy, m->dc.drawable, m->barwin, m->dc.gc, 0, 0, m->sw, bh, 0, 0);
605 XSync(dpy, False);
606 }
607 }
608
609 void
610 drawsquare(Monitor *m, Bool filled, Bool empty, unsigned long col[ColLast]) {
611 int x;
612 XGCValues gcv;
613 XRectangle r = { m->dc.x, m->dc.y, m->dc.w, m->dc.h };
614
615 gcv.foreground = col[ColFG];
616 XChangeGC(dpy, m->dc.gc, GCForeground, &gcv);
617 x = (m->dc.font.ascent + m->dc.font.descent + 2) / 4;
618 r.x = m->dc.x + 1;
619 r.y = m->dc.y + 1;
620 if(filled) {
621 r.width = r.height = x + 1;
622 XFillRectangles(dpy, m->dc.drawable, m->dc.gc, &r, 1);
623 }
624 else if(empty) {
625 r.width = r.height = x;
626 XDrawRectangles(dpy, m->dc.drawable, m->dc.gc, &r, 1);
627 }
628 }
629
630 void
631 drawtext(Monitor *m, const char *text, unsigned long col[ColLast]) {
632 int x, y, w, h;
633 static char buf[256];
634 unsigned int len, olen;
635 XRectangle r = { m->dc.x, m->dc.y, m->dc.w, m->dc.h };
636
637 XSetForeground(dpy, m->dc.gc, col[ColBG]);
638 XFillRectangles(dpy, m->dc.drawable, m->dc.gc, &r, 1);
639 if(!text)
640 return;
641 w = 0;
642 olen = len = strlen(text);
643 if(len >= sizeof buf)
644 len = sizeof buf - 1;
645 memcpy(buf, text, len);
646 buf[len] = 0;
647 h = m->dc.font.ascent + m->dc.font.descent;
648 y = m->dc.y + (m->dc.h / 2) - (h / 2) + m->dc.font.ascent;
649 x = m->dc.x + (h / 2);
650 /* shorten text if necessary */
651 while(len && (w = textnw(m, buf, len)) > m->dc.w - h)
652 buf[--len] = 0;
653 if(len < olen) {
654 if(len > 1)
655 buf[len - 1] = '.';
656 if(len > 2)
657 buf[len - 2] = '.';
658 if(len > 3)
659 buf[len - 3] = '.';
660 }
661 if(w > m->dc.w)
662 return; /* too long */
663 XSetForeground(dpy, m->dc.gc, col[ColFG]);
664 if(m->dc.font.set)
665 XmbDrawString(dpy, m->dc.drawable, m->dc.font.set, m->dc.gc, x, y, buf, len);
666 else
667 XDrawString(dpy, m->dc.drawable, m->dc.gc, x, y, buf, len);
668 }
669
670 void *
671 emallocz(unsigned int size) {
672 void *res = calloc(1, size);
673
674 if(!res)
675 eprint("fatal: could not malloc() %u bytes\n", size);
676 return res;
677 }
678
679 void
680 enternotify(XEvent *e) {
681 Client *c;
682 XCrossingEvent *ev = &e->xcrossing;
683
684 if(ev->mode != NotifyNormal || ev->detail == NotifyInferior);
685 //return;
686 if((c = getclient(ev->window)))
687 focus(c);
688 else {
689 selmonitor = monitorat();
690 fprintf(stderr, "updating selmonitor %d\n", selmonitor);
691 focus(NULL);
692 }
693 }
694
695 void
696 eprint(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 void
706 expose(XEvent *e) {
707 XExposeEvent *ev = &e->xexpose;
708
709 if(ev->count == 0) {
710 if(ev->window == monitors[selmonitor].barwin)
711 drawbar();
712 }
713 }
714
715 void
716 floating(void) { /* default floating layout */
717 Client *c;
718
719 domwfact = dozoom = False;
720 for(c = clients; c; c = c->next)
721 if(isvisible(c, selmonitor))
722 resize(c, c->x, c->y, c->w, c->h, True);
723 }
724
725 void
726 focus(Client *c) {
727 Monitor *m;
728
729 if(c)
730 selmonitor = c->monitor;
731 m = &monitors[selmonitor];
732 if(!c || (c && !isvisible(c, selmonitor)))
733 for(c = stack; c && !isvisible(c, c->monitor); c = c->snext);
734 if(sel && sel != c) {
735 grabbuttons(sel, False);
736 XSetWindowBorder(dpy, sel->win, monitors[sel->monitor].dc.norm[ColBorder]);
737 }
738 if(c) {
739 detachstack(c);
740 attachstack(c);
741 grabbuttons(c, True);
742 }
743 sel = c;
744 drawbar();
745 if(c) {
746 XSetWindowBorder(dpy, c->win, m->dc.sel[ColBorder]);
747 XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
748 selmonitor = c->monitor;
749 }
750 else {
751 XSetInputFocus(dpy, m->root, RevertToPointerRoot, CurrentTime);
752 }
753 }
754
755 void
756 focusin(XEvent *e) { /* there are some broken focus acquiring clients */
757 XFocusChangeEvent *ev = &e->xfocus;
758
759 if(sel && ev->window != sel->win)
760 XSetInputFocus(dpy, sel->win, RevertToPointerRoot, CurrentTime);
761 }
762
763 void
764 focusnext(const char *arg) {
765 Client *c;
766
767 if(!sel)
768 return;
769 for(c = sel->next; c && !isvisible(c, selmonitor); c = c->next);
770 if(!c)
771 for(c = clients; c && !isvisible(c, selmonitor); c = c->next);
772 if(c) {
773 focus(c);
774 restack();
775 }
776 }
777
778 void
779 focusprev(const char *arg) {
780 Client *c;
781
782 if(!sel)
783 return;
784 for(c = sel->prev; c && !isvisible(c, selmonitor); c = c->prev);
785 if(!c) {
786 for(c = clients; c && c->next; c = c->next);
787 for(; c && !isvisible(c, selmonitor); c = c->prev);
788 }
789 if(c) {
790 focus(c);
791 restack();
792 }
793 }
794
795 Client *
796 getclient(Window w) {
797 Client *c;
798
799 for(c = clients; c && c->win != w; c = c->next);
800 return c;
801 }
802
803 unsigned long
804 getcolor(const char *colstr, int screen) {
805 Colormap cmap = DefaultColormap(dpy, screen);
806 XColor color;
807
808 if(!XAllocNamedColor(dpy, cmap, colstr, &color, &color))
809 eprint("error, cannot allocate color '%s'\n", colstr);
810 return color.pixel;
811 }
812
813 long
814 getstate(Window w) {
815 int format, status;
816 long result = -1;
817 unsigned char *p = NULL;
818 unsigned long n, extra;
819 Atom real;
820
821 status = XGetWindowProperty(dpy, w, wmatom[WMState], 0L, 2L, False, wmatom[WMState],
822 &real, &format, &n, &extra, (unsigned char **)&p);
823 if(status != Success)
824 return -1;
825 if(n != 0)
826 result = *p;
827 XFree(p);
828 return result;
829 }
830
831 Bool
832 gettextprop(Window w, Atom atom, char *text, unsigned int size) {
833 char **list = NULL;
834 int n;
835 XTextProperty name;
836
837 if(!text || size == 0)
838 return False;
839 text[0] = '\0';
840 XGetTextProperty(dpy, w, &name, atom);
841 if(!name.nitems)
842 return False;
843 if(name.encoding == XA_STRING)
844 strncpy(text, (char *)name.value, size - 1);
845 else {
846 if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
847 && n > 0 && *list) {
848 strncpy(text, *list, size - 1);
849 XFreeStringList(list);
850 }
851 }
852 text[size - 1] = '\0';
853 XFree(name.value);
854 return True;
855 }
856
857 void
858 grabbuttons(Client *c, Bool focused) {
859 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
860
861 if(focused) {
862 XGrabButton(dpy, Button1, MODKEY, c->win, False, BUTTONMASK,
863 GrabModeAsync, GrabModeSync, None, None);
864 XGrabButton(dpy, Button1, MODKEY | LockMask, c->win, False, BUTTONMASK,
865 GrabModeAsync, GrabModeSync, None, None);
866 XGrabButton(dpy, Button1, MODKEY | numlockmask, c->win, False, BUTTONMASK,
867 GrabModeAsync, GrabModeSync, None, None);
868 XGrabButton(dpy, Button1, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
869 GrabModeAsync, GrabModeSync, None, None);
870
871 XGrabButton(dpy, Button2, MODKEY, c->win, False, BUTTONMASK,
872 GrabModeAsync, GrabModeSync, None, None);
873 XGrabButton(dpy, Button2, MODKEY | LockMask, c->win, False, BUTTONMASK,
874 GrabModeAsync, GrabModeSync, None, None);
875 XGrabButton(dpy, Button2, MODKEY | numlockmask, c->win, False, BUTTONMASK,
876 GrabModeAsync, GrabModeSync, None, None);
877 XGrabButton(dpy, Button2, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
878 GrabModeAsync, GrabModeSync, None, None);
879
880 XGrabButton(dpy, Button3, MODKEY, c->win, False, BUTTONMASK,
881 GrabModeAsync, GrabModeSync, None, None);
882 XGrabButton(dpy, Button3, MODKEY | LockMask, c->win, False, BUTTONMASK,
883 GrabModeAsync, GrabModeSync, None, None);
884 XGrabButton(dpy, Button3, MODKEY | numlockmask, c->win, False, BUTTONMASK,
885 GrabModeAsync, GrabModeSync, None, None);
886 XGrabButton(dpy, Button3, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
887 GrabModeAsync, GrabModeSync, None, None);
888 }
889 else
890 XGrabButton(dpy, AnyButton, AnyModifier, c->win, False, BUTTONMASK,
891 GrabModeAsync, GrabModeSync, None, None);
892 }
893
894 void
895 grabkeys(void) {
896 unsigned int i, j;
897 KeyCode code;
898 XModifierKeymap *modmap;
899
900 /* init modifier map */
901 modmap = XGetModifierMapping(dpy);
902 for(i = 0; i < 8; i++)
903 for(j = 0; j < modmap->max_keypermod; j++) {
904 if(modmap->modifiermap[i * modmap->max_keypermod + j] == XKeysymToKeycode(dpy, XK_Num_Lock))
905 numlockmask = (1 << i);
906 }
907 XFreeModifiermap(modmap);
908
909 for(i = 0; i < mcount; i++) {
910 Monitor *m = &monitors[i];
911 XUngrabKey(dpy, AnyKey, AnyModifier, m->root);
912 for(j = 0; j < LENGTH(keys); j++) {
913 code = XKeysymToKeycode(dpy, keys[j].keysym);
914 XGrabKey(dpy, code, keys[j].mod, m->root, True,
915 GrabModeAsync, GrabModeAsync);
916 XGrabKey(dpy, code, keys[j].mod | LockMask, m->root, True,
917 GrabModeAsync, GrabModeAsync);
918 XGrabKey(dpy, code, keys[j].mod | numlockmask, m->root, True,
919 GrabModeAsync, GrabModeAsync);
920 XGrabKey(dpy, code, keys[j].mod | numlockmask | LockMask, m->root, True,
921 GrabModeAsync, GrabModeAsync);
922 }
923 }
924 }
925
926 unsigned int
927 idxoftag(const char *tag) {
928 unsigned int i;
929
930 for(i = 0; (i < LENGTH(tags)) && (tags[i] != tag); i++);
931 return (i < LENGTH(tags)) ? i : 0;
932 }
933
934 void
935 initfont(Monitor *m, const char *fontstr) {
936 char *def, **missing;
937 int i, n;
938
939 missing = NULL;
940 if(m->dc.font.set)
941 XFreeFontSet(dpy, m->dc.font.set);
942 m->dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
943 if(missing) {
944 while(n--)
945 fprintf(stderr, "dwm: missing fontset: %s\n", missing[n]);
946 XFreeStringList(missing);
947 }
948 if(m->dc.font.set) {
949 XFontSetExtents *font_extents;
950 XFontStruct **xfonts;
951 char **font_names;
952 m->dc.font.ascent = m->dc.font.descent = 0;
953 font_extents = XExtentsOfFontSet(m->dc.font.set);
954 n = XFontsOfFontSet(m->dc.font.set, &xfonts, &font_names);
955 for(i = 0, m->dc.font.ascent = 0, m->dc.font.descent = 0; i < n; i++) {
956 if(m->dc.font.ascent < (*xfonts)->ascent)
957 m->dc.font.ascent = (*xfonts)->ascent;
958 if(m->dc.font.descent < (*xfonts)->descent)
959 m->dc.font.descent = (*xfonts)->descent;
960 xfonts++;
961 }
962 }
963 else {
964 if(m->dc.font.xfont)
965 XFreeFont(dpy, m->dc.font.xfont);
966 m->dc.font.xfont = NULL;
967 if(!(m->dc.font.xfont = XLoadQueryFont(dpy, fontstr))
968 && !(m->dc.font.xfont = XLoadQueryFont(dpy, "fixed")))
969 eprint("error, cannot load font: '%s'\n", fontstr);
970 m->dc.font.ascent = m->dc.font.xfont->ascent;
971 m->dc.font.descent = m->dc.font.xfont->descent;
972 }
973 m->dc.font.height = m->dc.font.ascent + m->dc.font.descent;
974 }
975
976 Bool
977 isoccupied(Monitor *m, unsigned int t) {
978 Client *c;
979
980 for(c = clients; c; c = c->next)
981 if(c->tags[t] && c->monitor == selmonitor)
982 return True;
983 return False;
984 }
985
986 Bool
987 isprotodel(Client *c) {
988 int i, n;
989 Atom *protocols;
990 Bool ret = False;
991
992 if(XGetWMProtocols(dpy, c->win, &protocols, &n)) {
993 for(i = 0; !ret && i < n; i++)
994 if(protocols[i] == wmatom[WMDelete])
995 ret = True;
996 XFree(protocols);
997 }
998 return ret;
999 }
1000
1001 Bool
1002 isvisible(Client *c, int monitor) {
1003 unsigned int i;
1004
1005 for(i = 0; i < LENGTH(tags); i++)
1006 if(c->tags[i] && monitors[c->monitor].seltags[i] && c->monitor == monitor)
1007 return True;
1008 return False;
1009 }
1010
1011 void
1012 keypress(XEvent *e) {
1013 unsigned int i;
1014 KeySym keysym;
1015 XKeyEvent *ev;
1016
1017 ev = &e->xkey;
1018 keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
1019 for(i = 0; i < LENGTH(keys); i++)
1020 if(keysym == keys[i].keysym
1021 && CLEANMASK(keys[i].mod) == CLEANMASK(ev->state))
1022 {
1023 if(keys[i].func)
1024 keys[i].func(keys[i].arg);
1025 }
1026 }
1027
1028 void
1029 killclient(const char *arg) {
1030 XEvent ev;
1031
1032 if(!sel)
1033 return;
1034 if(isprotodel(sel)) {
1035 ev.type = ClientMessage;
1036 ev.xclient.window = sel->win;
1037 ev.xclient.message_type = wmatom[WMProtocols];
1038 ev.xclient.format = 32;
1039 ev.xclient.data.l[0] = wmatom[WMDelete];
1040 ev.xclient.data.l[1] = CurrentTime;
1041 XSendEvent(dpy, sel->win, False, NoEventMask, &ev);
1042 }
1043 else
1044 XKillClient(dpy, sel->win);
1045 }
1046
1047 void
1048 manage(Window w, XWindowAttributes *wa) {
1049 Client *c, *t = NULL;
1050 Monitor *m;
1051 Status rettrans;
1052 Window trans;
1053 XWindowChanges wc;
1054
1055 c = emallocz(sizeof(Client));
1056 c->tags = emallocz(sizeof initags);
1057 c->win = w;
1058
1059 applyrules(c);
1060
1061 m = &monitors[c->monitor];
1062
1063 c->x = wa->x + m->sx;
1064 c->y = wa->y + m->sy;
1065 c->w = wa->width;
1066 c->h = wa->height;
1067 c->oldborder = wa->border_width;
1068
1069 if(c->w == m->sw && c->h == m->sh) {
1070 c->x = m->sx;
1071 c->y = m->sy;
1072 c->border = wa->border_width;
1073 }
1074 else {
1075 if(c->x + c->w + 2 * c->border > m->wax + m->waw)
1076 c->x = m->wax + m->waw - c->w - 2 * c->border;
1077 if(c->y + c->h + 2 * c->border > m->way + m->wah)
1078 c->y = m->way + m->wah - c->h - 2 * c->border;
1079 if(c->x < m->wax)
1080 c->x = m->wax;
1081 if(c->y < m->way)
1082 c->y = m->way;
1083 c->border = BORDERPX;
1084 }
1085 wc.border_width = c->border;
1086 XConfigureWindow(dpy, w, CWBorderWidth, &wc);
1087 XSetWindowBorder(dpy, w, m->dc.norm[ColBorder]);
1088 configure(c); /* propagates border_width, if size doesn't change */
1089 updatesizehints(c);
1090 XSelectInput(dpy, w, EnterWindowMask | FocusChangeMask | PropertyChangeMask | StructureNotifyMask);
1091 grabbuttons(c, False);
1092 updatetitle(c);
1093 if((rettrans = XGetTransientForHint(dpy, w, &trans) == Success))
1094 for(t = clients; t && t->win != trans; t = t->next);
1095 if(t)
1096 memcpy(c->tags, t->tags, sizeof initags);
1097 if(!c->isfloating)
1098 c->isfloating = (rettrans == Success) || c->isfixed;
1099 attach(c);
1100 attachstack(c);
1101 XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h); /* some windows require this */
1102 ban(c);
1103 XMapWindow(dpy, c->win);
1104 setclientstate(c, NormalState);
1105 arrange();
1106 }
1107
1108 void
1109 mappingnotify(XEvent *e) {
1110 XMappingEvent *ev = &e->xmapping;
1111
1112 XRefreshKeyboardMapping(ev);
1113 if(ev->request == MappingKeyboard)
1114 grabkeys();
1115 }
1116
1117 void
1118 maprequest(XEvent *e) {
1119 static XWindowAttributes wa;
1120 XMapRequestEvent *ev = &e->xmaprequest;
1121
1122 if(!XGetWindowAttributes(dpy, ev->window, &wa))
1123 return;
1124 if(wa.override_redirect)
1125 return;
1126 if(!getclient(ev->window))
1127 manage(ev->window, &wa);
1128 }
1129
1130 int
1131 monitorat() {
1132 int i, x, y;
1133 Window win;
1134 unsigned int mask;
1135
1136 XQueryPointer(dpy, monitors[selmonitor].root, &win, &win, &x, &y, &i, &i, &mask);
1137 for(i = 0; i < mcount; i++) {
1138 fprintf(stderr, "checking monitor[%d]: %d %d %d %d\n", i, monitors[i].sx, monitors[i].sy, monitors[i].sw, monitors[i].sh);
1139 if((x >= monitors[i].sx && x < monitors[i].sx + monitors[i].sw)
1140 && (y >= monitors[i].sy && y < monitors[i].sy + monitors[i].sh)) {
1141 fprintf(stderr, "%d,%d -> %d\n", x, y, i);
1142 return i;
1143 }
1144 }
1145 fprintf(stderr, "?,? -> 0\n");
1146 return 0;
1147 }
1148
1149 void
1150 movemouse(Client *c) {
1151 int x1, y1, ocx, ocy, di, nx, ny;
1152 unsigned int dui;
1153 Window dummy;
1154 XEvent ev;
1155
1156 ocx = nx = c->x;
1157 ocy = ny = c->y;
1158 if(XGrabPointer(dpy, monitors[selmonitor].root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
1159 None, cursor[CurMove], CurrentTime) != GrabSuccess)
1160 return;
1161 XQueryPointer(dpy, monitors[selmonitor].root, &dummy, &dummy, &x1, &y1, &di, &di, &dui);
1162 for(;;) {
1163 XMaskEvent(dpy, MOUSEMASK | ExposureMask | SubstructureRedirectMask, &ev);
1164 switch (ev.type) {
1165 case ButtonRelease:
1166 XUngrabPointer(dpy, CurrentTime);
1167 return;
1168 case ConfigureRequest:
1169 case Expose:
1170 case MapRequest:
1171 handler[ev.type](&ev);
1172 break;
1173 case MotionNotify:
1174 XSync(dpy, False);
1175 nx = ocx + (ev.xmotion.x - x1);
1176 ny = ocy + (ev.xmotion.y - y1);
1177 Monitor *m = &monitors[monitorat()];
1178 if(abs(m->wax - nx) < SNAP)
1179 nx = m->wax;
1180 else if(abs((m->wax + m->waw) - (nx + c->w + 2 * c->border)) < SNAP)
1181 nx = m->wax + m->waw - c->w - 2 * c->border;
1182 if(abs(m->way - ny) < SNAP)
1183 ny = m->way;
1184 else if(abs((m->way + m->wah) - (ny + c->h + 2 * c->border)) < SNAP)
1185 ny = m->way + m->wah - c->h - 2 * c->border;
1186 resize(c, nx, ny, c->w, c->h, False);
1187 memcpy(c->tags, monitors[monitorat()].seltags, sizeof initags);
1188 break;
1189 }
1190 }
1191 }
1192
1193 Client *
1194 nexttiled(Client *c, int monitor) {
1195 for(; c && (c->isfloating || !isvisible(c, monitor)); c = c->next);
1196 return c;
1197 }
1198
1199 void
1200 propertynotify(XEvent *e) {
1201 Client *c;
1202 Window trans;
1203 XPropertyEvent *ev = &e->xproperty;
1204
1205 if(ev->state == PropertyDelete)
1206 return; /* ignore */
1207 if((c = getclient(ev->window))) {
1208 switch (ev->atom) {
1209 default: break;
1210 case XA_WM_TRANSIENT_FOR:
1211 XGetTransientForHint(dpy, c->win, &trans);
1212 if(!c->isfloating && (c->isfloating = (getclient(trans) != NULL)))
1213 arrange();
1214 break;
1215 case XA_WM_NORMAL_HINTS:
1216 updatesizehints(c);
1217 break;
1218 }
1219 if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
1220 updatetitle(c);
1221 if(c == sel)
1222 drawbar();
1223 }
1224 }
1225 }
1226
1227 void
1228 quit(const char *arg) {
1229 readin = running = False;
1230 }
1231
1232 void
1233 reapply(const char *arg) {
1234 static Bool zerotags[LENGTH(tags)] = { 0 };
1235 Client *c;
1236
1237 for(c = clients; c; c = c->next) {
1238 memcpy(c->tags, zerotags, sizeof zerotags);
1239 applyrules(c);
1240 }
1241 arrange();
1242 }
1243
1244 void
1245 resize(Client *c, int x, int y, int w, int h, Bool sizehints) {
1246 XWindowChanges wc;
1247 //Monitor scr = monitors[monitorat()];
1248 // c->monitor = monitorat();
1249
1250 if(sizehints) {
1251 /* set minimum possible */
1252 if (w < 1)
1253 w = 1;
1254 if (h < 1)
1255 h = 1;
1256
1257 /* temporarily remove base dimensions */
1258 w -= c->basew;
1259 h -= c->baseh;
1260
1261 /* adjust for aspect limits */
1262 if (c->minay > 0 && c->maxay > 0 && c->minax > 0 && c->maxax > 0) {
1263 if (w * c->maxay > h * c->maxax)
1264 w = h * c->maxax / c->maxay;
1265 else if (w * c->minay < h * c->minax)
1266 h = w * c->minay / c->minax;
1267 }
1268
1269 /* adjust for increment value */
1270 if(c->incw)
1271 w -= w % c->incw;
1272 if(c->inch)
1273 h -= h % c->inch;
1274
1275 /* restore base dimensions */
1276 w += c->basew;
1277 h += c->baseh;
1278
1279 if(c->minw > 0 && w < c->minw)
1280 w = c->minw;
1281 if(c->minh > 0 && h < c->minh)
1282 h = c->minh;
1283 if(c->maxw > 0 && w > c->maxw)
1284 w = c->maxw;
1285 if(c->maxh > 0 && h > c->maxh)
1286 h = c->maxh;
1287 }
1288 if(w <= 0 || h <= 0)
1289 return;
1290 /* TODO: offscreen appearance fixes */
1291 /*
1292 if(x > scr.sw)
1293 x = scr.sw - w - 2 * c->border;
1294 if(y > scr.sh)
1295 y = scr.sh - h - 2 * c->border;
1296 if(x + w + 2 * c->border < scr.sx)
1297 x = scr.sx;
1298 if(y + h + 2 * c->border < scr.sy)
1299 y = scr.sy;
1300 */
1301 if(c->x != x || c->y != y || c->w != w || c->h != h) {
1302 c->x = wc.x = x;
1303 c->y = wc.y = y;
1304 c->w = wc.width = w;
1305 c->h = wc.height = h;
1306 wc.border_width = c->border;
1307 XConfigureWindow(dpy, c->win, CWX | CWY | CWWidth | CWHeight | CWBorderWidth, &wc);
1308 configure(c);
1309 XSync(dpy, False);
1310 }
1311 }
1312
1313 void
1314 resizemouse(Client *c) {
1315 int ocx, ocy;
1316 int nw, nh;
1317 XEvent ev;
1318
1319 ocx = c->x;
1320 ocy = c->y;
1321 if(XGrabPointer(dpy, monitors[selmonitor].root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
1322 None, cursor[CurResize], CurrentTime) != GrabSuccess)
1323 return;
1324 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->border - 1, c->h + c->border - 1);
1325 for(;;) {
1326 XMaskEvent(dpy, MOUSEMASK | ExposureMask | SubstructureRedirectMask , &ev);
1327 switch(ev.type) {
1328 case ButtonRelease:
1329 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0,
1330 c->w + c->border - 1, c->h + c->border - 1);
1331 XUngrabPointer(dpy, CurrentTime);
1332 while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
1333 return;
1334 case ConfigureRequest:
1335 case Expose:
1336 case MapRequest:
1337 handler[ev.type](&ev);
1338 break;
1339 case MotionNotify:
1340 XSync(dpy, False);
1341 if((nw = ev.xmotion.x - ocx - 2 * c->border + 1) <= 0)
1342 nw = 1;
1343 if((nh = ev.xmotion.y - ocy - 2 * c->border + 1) <= 0)
1344 nh = 1;
1345 resize(c, c->x, c->y, nw, nh, True);
1346 break;
1347 }
1348 }
1349 }
1350
1351 void
1352 restack(void) {
1353 unsigned int i;
1354 Client *c;
1355 XEvent ev;
1356 XWindowChanges wc;
1357
1358 drawbar();
1359 if(!sel)
1360 return;
1361 if(sel->isfloating || (monitors[selmonitor].layout->arrange == floating))
1362 XRaiseWindow(dpy, sel->win);
1363 if(monitors[selmonitor].layout->arrange != floating) {
1364 wc.stack_mode = Below;
1365 wc.sibling = monitors[selmonitor].barwin;
1366 if(!sel->isfloating) {
1367 XConfigureWindow(dpy, sel->win, CWSibling | CWStackMode, &wc);
1368 wc.sibling = sel->win;
1369 }
1370 for(i = 0; i < mcount; i++) {
1371 for(c = nexttiled(clients, i); c; c = nexttiled(c->next, i)) {
1372 if(c == sel)
1373 continue;
1374 XConfigureWindow(dpy, c->win, CWSibling | CWStackMode, &wc);
1375 wc.sibling = c->win;
1376 }
1377 }
1378 }
1379 XSync(dpy, False);
1380 while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
1381 }
1382
1383 void
1384 run(void) {
1385 char *p;
1386 char buf[sizeof stext];
1387 fd_set rd;
1388 int r, xfd;
1389 unsigned int len, offset;
1390 XEvent ev;
1391
1392 /* main event loop, also reads status text from stdin */
1393 XSync(dpy, False);
1394 xfd = ConnectionNumber(dpy);
1395 readin = True;
1396 offset = 0;
1397 len = sizeof stext - 1;
1398 buf[len] = stext[len] = '\0'; /* 0-terminator is never touched */
1399 while(running) {
1400 FD_ZERO(&rd);
1401 if(readin)
1402 FD_SET(STDIN_FILENO, &rd);
1403 FD_SET(xfd, &rd);
1404 if(select(xfd + 1, &rd, NULL, NULL, NULL) == -1) {
1405 if(errno == EINTR)
1406 continue;
1407 eprint("select failed\n");
1408 }
1409 if(FD_ISSET(STDIN_FILENO, &rd)) {
1410 switch((r = read(STDIN_FILENO, buf + offset, len - offset))) {
1411 case -1:
1412 strncpy(stext, strerror(errno), len);
1413 readin = False;
1414 break;
1415 case 0:
1416 strncpy(stext, "EOF", 4);
1417 readin = False;
1418 break;
1419 default:
1420 for(p = buf + offset; r > 0; p++, r--, offset++)
1421 if(*p == '\n' || *p == '\0') {
1422 *p = '\0';
1423 strncpy(stext, buf, len);
1424 p += r - 1; /* p is buf + offset + r - 1 */
1425 for(r = 0; *(p - r) && *(p - r) != '\n'; r++);
1426 offset = r;
1427 if(r)
1428 memmove(buf, p - r + 1, r);
1429 break;
1430 }
1431 break;
1432 }
1433 drawbar();
1434 }
1435 while(XPending(dpy)) {
1436 XNextEvent(dpy, &ev);
1437 if(handler[ev.type])
1438 (handler[ev.type])(&ev); /* call handler */
1439 }
1440 }
1441 }
1442
1443 void
1444 scan(void) {
1445 unsigned int i, j, num;
1446 Window *wins, d1, d2;
1447 XWindowAttributes wa;
1448
1449 for(i = 0; i < mcount; i++) {
1450 Monitor *m = &monitors[i];
1451 wins = NULL;
1452 if(XQueryTree(dpy, m->root, &d1, &d2, &wins, &num)) {
1453 for(j = 0; j < num; j++) {
1454 if(!XGetWindowAttributes(dpy, wins[j], &wa)
1455 || wa.override_redirect || XGetTransientForHint(dpy, wins[j], &d1))
1456 continue;
1457 if(wa.map_state == IsViewable || getstate(wins[j]) == IconicState)
1458 manage(wins[j], &wa);
1459 }
1460 for(j = 0; j < num; j++) { /* now the transients */
1461 if(!XGetWindowAttributes(dpy, wins[j], &wa))
1462 continue;
1463 if(XGetTransientForHint(dpy, wins[j], &d1)
1464 && (wa.map_state == IsViewable || getstate(wins[j]) == IconicState))
1465 manage(wins[j], &wa);
1466 }
1467 }
1468 if(wins)
1469 XFree(wins);
1470 }
1471 }
1472
1473 void
1474 setclientstate(Client *c, long state) {
1475 long data[] = {state, None};
1476
1477 XChangeProperty(dpy, c->win, wmatom[WMState], wmatom[WMState], 32,
1478 PropModeReplace, (unsigned char *)data, 2);
1479 }
1480
1481 void
1482 setlayout(const char *arg) {
1483 unsigned int i;
1484 Monitor *m = &monitors[monitorat()];
1485
1486 if(!arg) {
1487 m->layout++;
1488 if(m->layout == &layouts[LENGTH(layouts)])
1489 m->layout = &layouts[0];
1490 }
1491 else {
1492 for(i = 0; i < LENGTH(layouts); i++)
1493 if(!strcmp(arg, layouts[i].symbol))
1494 break;
1495 if(i == LENGTH(layouts))
1496 return;
1497 m->layout = &layouts[i];
1498 }
1499 if(sel)
1500 arrange();
1501 else
1502 drawbar();
1503 }
1504
1505 void
1506 setmwfact(const char *arg) {
1507 double delta;
1508
1509 Monitor *m = &monitors[monitorat()];
1510
1511 if(!domwfact)
1512 return;
1513 /* arg handling, manipulate mwfact */
1514 if(arg == NULL)
1515 m->mwfact = MWFACT;
1516 else if(sscanf(arg, "%lf", &delta) == 1) {
1517 if(arg[0] == '+' || arg[0] == '-')
1518 m->mwfact += delta;
1519 else
1520 m->mwfact = delta;
1521 if(m->mwfact < 0.1)
1522 m->mwfact = 0.1;
1523 else if(m->mwfact > 0.9)
1524 m->mwfact = 0.9;
1525 }
1526 arrange();
1527 }
1528
1529 void
1530 setup(void) {
1531 unsigned int i, j, k;
1532 Monitor *m;
1533 XSetWindowAttributes wa;
1534 XineramaScreenInfo *info = NULL;
1535
1536 /* init atoms */
1537 wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
1538 wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
1539 wmatom[WMName] = XInternAtom(dpy, "WM_NAME", False);
1540 wmatom[WMState] = XInternAtom(dpy, "WM_STATE", False);
1541 netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
1542 netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
1543
1544 /* init cursors */
1545 wa.cursor = cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
1546 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
1547 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
1548
1549 // init screens/monitors first
1550 mcount = 1;
1551 if((isxinerama = XineramaIsActive(dpy)))
1552 info = XineramaQueryScreens(dpy, &mcount);
1553 monitors = emallocz(mcount * sizeof(Monitor));
1554
1555 for(i = 0; i < mcount; i++) {
1556 /* init geometry */
1557 m = &monitors[i];
1558
1559 m->screen = isxinerama ? 0 : i;
1560 m->root = RootWindow(dpy, m->screen);
1561
1562 if (mcount != 1 && isxinerama) {
1563 m->sx = info[i].x_org;
1564 m->sy = info[i].y_org;
1565 m->sw = info[i].width;
1566 m->sh = info[i].height;
1567 fprintf(stderr, "monitor[%d]: %d,%d,%d,%d\n", i, m->sx, m->sy, m->sw, m->sh);
1568 }
1569 else {
1570 m->sx = 0;
1571 m->sy = 0;
1572 m->sw = DisplayWidth(dpy, m->screen);
1573 m->sh = DisplayHeight(dpy, m->screen);
1574 }
1575
1576 m->seltags = emallocz(sizeof initags);
1577 m->prevtags = emallocz(sizeof initags);
1578
1579 memcpy(m->seltags, initags, sizeof initags);
1580 memcpy(m->prevtags, initags, sizeof initags);
1581
1582 /* init appearance */
1583 m->dc.norm[ColBorder] = getcolor(NORMBORDERCOLOR, m->screen);
1584 m->dc.norm[ColBG] = getcolor(NORMBGCOLOR, m->screen);
1585 m->dc.norm[ColFG] = getcolor(NORMFGCOLOR, m->screen);
1586 m->dc.sel[ColBorder] = getcolor(SELBORDERCOLOR, m->screen);
1587 m->dc.sel[ColBG] = getcolor(SELBGCOLOR, m->screen);
1588 m->dc.sel[ColFG] = getcolor(SELFGCOLOR, m->screen);
1589 initfont(m, FONT);
1590 m->dc.h = bh = m->dc.font.height + 2;
1591
1592 /* init layouts */
1593 m->mwfact = MWFACT;
1594 m->layout = &layouts[0];
1595 for(blw = k = 0; k < LENGTH(layouts); k++) {
1596 j = textw(m, layouts[k].symbol);
1597 if(j > blw)
1598 blw = j;
1599 }
1600
1601 // TODO: bpos per screen?
1602 bpos = BARPOS;
1603 wa.override_redirect = 1;
1604 wa.background_pixmap = ParentRelative;
1605 wa.event_mask = ButtonPressMask | ExposureMask;
1606
1607 /* init bars */
1608 m->barwin = XCreateWindow(dpy, m->root, m->sx, m->sy, m->sw, bh, 0,
1609 DefaultDepth(dpy, m->screen), CopyFromParent, DefaultVisual(dpy, m->screen),
1610 CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
1611 XDefineCursor(dpy, m->barwin, cursor[CurNormal]);
1612 updatebarpos(m);
1613 XMapRaised(dpy, m->barwin);
1614 strcpy(stext, "dwm-"VERSION);
1615 m->dc.drawable = XCreatePixmap(dpy, m->root, m->sw, bh, DefaultDepth(dpy, m->screen));
1616 m->dc.gc = XCreateGC(dpy, m->root, 0, 0);
1617 XSetLineAttributes(dpy, m->dc.gc, 1, LineSolid, CapButt, JoinMiter);
1618 if(!m->dc.font.set)
1619 XSetFont(dpy, m->dc.gc, m->dc.font.xfont->fid);
1620
1621 /* EWMH support per monitor */
1622 XChangeProperty(dpy, m->root, netatom[NetSupported], XA_ATOM, 32,
1623 PropModeReplace, (unsigned char *) netatom, NetLast);
1624
1625 /* select for events */
1626 wa.event_mask = SubstructureRedirectMask | SubstructureNotifyMask
1627 | EnterWindowMask | LeaveWindowMask | StructureNotifyMask;
1628 XChangeWindowAttributes(dpy, m->root, CWEventMask | CWCursor, &wa);
1629 XSelectInput(dpy, m->root, wa.event_mask);
1630 }
1631 if(info)
1632 XFree(info);
1633
1634 /* grab keys */
1635 grabkeys();
1636
1637 /* init tags */
1638 compileregs();
1639
1640 selmonitor = monitorat();
1641 fprintf(stderr, "selmonitor == %d\n", selmonitor);
1642 }
1643
1644 void
1645 spawn(const char *arg) {
1646 static char *shell = NULL;
1647
1648 if(!shell && !(shell = getenv("SHELL")))
1649 shell = "/bin/sh";
1650 if(!arg)
1651 return;
1652 /* The double-fork construct avoids zombie processes and keeps the code
1653 * clean from stupid signal handlers. */
1654 if(fork() == 0) {
1655 if(fork() == 0) {
1656 if(dpy)
1657 close(ConnectionNumber(dpy));
1658 setsid();
1659 execl(shell, shell, "-c", arg, (char *)NULL);
1660 fprintf(stderr, "dwm: execl '%s -c %s'", shell, arg);
1661 perror(" failed");
1662 }
1663 exit(0);
1664 }
1665 wait(0);
1666 }
1667
1668 void
1669 tag(const char *arg) {
1670 unsigned int i;
1671
1672 if(!sel)
1673 return;
1674 for(i = 0; i < LENGTH(tags); i++)
1675 sel->tags[i] = (NULL == arg);
1676 sel->tags[idxoftag(arg)] = True;
1677 arrange();
1678 }
1679
1680 unsigned int
1681 textnw(Monitor *m, const char *text, unsigned int len) {
1682 XRectangle r;
1683
1684 if(m->dc.font.set) {
1685 XmbTextExtents(m->dc.font.set, text, len, NULL, &r);
1686 return r.width;
1687 }
1688 return XTextWidth(m->dc.font.xfont, text, len);
1689 }
1690
1691 unsigned int
1692 textw(Monitor *m, const char *text) {
1693 return textnw(m, text, strlen(text)) + m->dc.font.height;
1694 }
1695
1696 void
1697 tile(void) {
1698 unsigned int i, j, n, nx, ny, nw, nh, mw, th;
1699 Client *c, *mc;
1700
1701 domwfact = dozoom = True;
1702
1703 nx = ny = nw = 0; /* gcc stupidity requires this */
1704
1705 for (i = 0; i < mcount; i++) {
1706 Monitor *m = &monitors[i];
1707
1708 for(n = 0, c = nexttiled(clients, i); c; c = nexttiled(c->next, i))
1709 n++;
1710
1711 for(j = 0, c = mc = nexttiled(clients, i); c; c = nexttiled(c->next, i)) {
1712 /* window geoms */
1713 mw = (n == 1) ? m->waw : m->mwfact * m->waw;
1714 th = (n > 1) ? m->wah / (n - 1) : 0;
1715 if(n > 1 && th < bh)
1716 th = m->wah;
1717 if(j == 0) { /* master */
1718 nx = m->wax;
1719 ny = m->way;
1720 nw = mw - 2 * c->border;
1721 nh = m->wah - 2 * c->border;
1722 }
1723 else { /* tile window */
1724 if(j == 1) {
1725 ny = m->way;
1726 nx += mc->w + 2 * mc->border;
1727 nw = m->waw - mw - 2 * c->border;
1728 }
1729 if(j + 1 == n) /* remainder */
1730 nh = (m->way + m->wah) - ny - 2 * c->border;
1731 else
1732 nh = th - 2 * c->border;
1733 }
1734 fprintf(stderr, "tile(%d, %d, %d, %d)\n", nx, ny, nw, nh);
1735 resize(c, nx, ny, nw, nh, RESIZEHINTS);
1736 if((RESIZEHINTS) && ((c->h < bh) || (c->h > nh) || (c->w < bh) || (c->w > nw)))
1737 /* client doesn't accept size constraints */
1738 resize(c, nx, ny, nw, nh, False);
1739 if(n > 1 && th != m->wah)
1740 ny = c->y + c->h + 2 * c->border;
1741
1742 j++;
1743 }
1744 }
1745 fprintf(stderr, "done\n");
1746 }
1747 void
1748 togglebar(const char *arg) {
1749 if(bpos == BarOff)
1750 bpos = (BARPOS == BarOff) ? BarTop : BARPOS;
1751 else
1752 bpos = BarOff;
1753 updatebarpos(&monitors[monitorat()]);
1754 arrange();
1755 }
1756
1757 void
1758 togglefloating(const char *arg) {
1759 if(!sel)
1760 return;
1761 sel->isfloating = !sel->isfloating;
1762 if(sel->isfloating)
1763 resize(sel, sel->x, sel->y, sel->w, sel->h, True);
1764 arrange();
1765 }
1766
1767 void
1768 toggletag(const char *arg) {
1769 unsigned int i, j;
1770
1771 if(!sel)
1772 return;
1773 i = idxoftag(arg);
1774 sel->tags[i] = !sel->tags[i];
1775 for(j = 0; j < LENGTH(tags) && !sel->tags[j]; j++);
1776 if(j == LENGTH(tags))
1777 sel->tags[i] = True; /* at least one tag must be enabled */
1778 arrange();
1779 }
1780
1781 void
1782 toggleview(const char *arg) {
1783 unsigned int i, j;
1784
1785 Monitor *m = &monitors[monitorat()];
1786
1787 i = idxoftag(arg);
1788 m->seltags[i] = !m->seltags[i];
1789 for(j = 0; j < LENGTH(tags) && !m->seltags[j]; j++);
1790 if(j == LENGTH(tags))
1791 m->seltags[i] = True; /* at least one tag must be viewed */
1792 arrange();
1793 }
1794
1795 void
1796 unban(Client *c) {
1797 if(!c->isbanned)
1798 return;
1799 XMoveWindow(dpy, c->win, c->x, c->y);
1800 c->isbanned = False;
1801 }
1802
1803 void
1804 unmanage(Client *c) {
1805 XWindowChanges wc;
1806
1807 wc.border_width = c->oldborder;
1808 /* The server grab construct avoids race conditions. */
1809 XGrabServer(dpy);
1810 XSetErrorHandler(xerrordummy);
1811 XConfigureWindow(dpy, c->win, CWBorderWidth, &wc); /* restore border */
1812 detach(c);
1813 detachstack(c);
1814 if(sel == c)
1815 focus(NULL);
1816 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
1817 setclientstate(c, WithdrawnState);
1818 free(c->tags);
1819 free(c);
1820 XSync(dpy, False);
1821 XSetErrorHandler(xerror);
1822 XUngrabServer(dpy);
1823 arrange();
1824 }
1825
1826 void
1827 unmapnotify(XEvent *e) {
1828 Client *c;
1829 XUnmapEvent *ev = &e->xunmap;
1830
1831 if((c = getclient(ev->window)))
1832 unmanage(c);
1833 }
1834
1835 void
1836 updatebarpos(Monitor *m) {
1837 XEvent ev;
1838
1839 m->wax = m->sx;
1840 m->way = m->sy;
1841 m->wah = m->sh;
1842 m->waw = m->sw;
1843 switch(bpos) {
1844 default:
1845 m->wah -= bh;
1846 m->way += bh;
1847 XMoveWindow(dpy, m->barwin, m->sx, m->sy);
1848 break;
1849 case BarBot:
1850 m->wah -= bh;
1851 XMoveWindow(dpy, m->barwin, m->sx, m->sy + m->wah);
1852 break;
1853 case BarOff:
1854 XMoveWindow(dpy, m->barwin, m->sx, m->sy - bh);
1855 break;
1856 }
1857 XSync(dpy, False);
1858 while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
1859 }
1860
1861 void
1862 updatesizehints(Client *c) {
1863 long msize;
1864 XSizeHints size;
1865
1866 if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
1867 size.flags = PSize;
1868 c->flags = size.flags;
1869 if(c->flags & PBaseSize) {
1870 c->basew = size.base_width;
1871 c->baseh = size.base_height;
1872 }
1873 else if(c->flags & PMinSize) {
1874 c->basew = size.min_width;
1875 c->baseh = size.min_height;
1876 }
1877 else
1878 c->basew = c->baseh = 0;
1879 if(c->flags & PResizeInc) {
1880 c->incw = size.width_inc;
1881 c->inch = size.height_inc;
1882 }
1883 else
1884 c->incw = c->inch = 0;
1885 if(c->flags & PMaxSize) {
1886 c->maxw = size.max_width;
1887 c->maxh = size.max_height;
1888 }
1889 else
1890 c->maxw = c->maxh = 0;
1891 if(c->flags & PMinSize) {
1892 c->minw = size.min_width;
1893 c->minh = size.min_height;
1894 }
1895 else if(c->flags & PBaseSize) {
1896 c->minw = size.base_width;
1897 c->minh = size.base_height;
1898 }
1899 else
1900 c->minw = c->minh = 0;
1901 if(c->flags & PAspect) {
1902 c->minax = size.min_aspect.x;
1903 c->maxax = size.max_aspect.x;
1904 c->minay = size.min_aspect.y;
1905 c->maxay = size.max_aspect.y;
1906 }
1907 else
1908 c->minax = c->maxax = c->minay = c->maxay = 0;
1909 c->isfixed = (c->maxw && c->minw && c->maxh && c->minh
1910 && c->maxw == c->minw && c->maxh == c->minh);
1911 }
1912
1913 void
1914 updatetitle(Client *c) {
1915 if(!gettextprop(c->win, netatom[NetWMName], c->name, sizeof c->name))
1916 gettextprop(c->win, wmatom[WMName], c->name, sizeof c->name);
1917 }
1918
1919 /* There's no way to check accesses to destroyed windows, thus those cases are
1920 * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
1921 * default error handler, which may call exit. */
1922 int
1923 xerror(Display *dpy, XErrorEvent *ee) {
1924 if(ee->error_code == BadWindow
1925 || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
1926 || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
1927 || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
1928 || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
1929 || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
1930 || (ee->request_code == X_GrabKey && ee->error_code == BadAccess)
1931 || (ee->request_code == X_CopyArea && ee->error_code == BadDrawable))
1932 return 0;
1933 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
1934 ee->request_code, ee->error_code);
1935 return xerrorxlib(dpy, ee); /* may call exit */
1936 }
1937
1938 int
1939 xerrordummy(Display *dsply, XErrorEvent *ee) {
1940 return 0;
1941 }
1942
1943 /* Startup Error handler to check if another window manager
1944 * is already running. */
1945 int
1946 xerrorstart(Display *dsply, XErrorEvent *ee) {
1947 otherwm = True;
1948 return -1;
1949 }
1950
1951 void
1952 view(const char *arg) {
1953 unsigned int i;
1954
1955 Monitor *m = &monitors[monitorat()];
1956
1957 memcpy(m->prevtags, m->seltags, sizeof initags);
1958 for(i = 0; i < LENGTH(tags); i++)
1959 m->seltags[i] = (NULL == arg);
1960 m->seltags[idxoftag(arg)] = True;
1961 arrange();
1962 }
1963
1964 void
1965 viewprevtag(const char *arg) {
1966 static Bool tmp[LENGTH(tags)];
1967
1968 Monitor *m = &monitors[monitorat()];
1969
1970 memcpy(tmp, m->seltags, sizeof initags);
1971 memcpy(m->seltags, m->prevtags, sizeof initags);
1972 memcpy(m->prevtags, tmp, sizeof initags);
1973 arrange();
1974 }
1975
1976 void
1977 zoom(const char *arg) {
1978 Client *c;
1979
1980 if(!sel || !dozoom || sel->isfloating)
1981 return;
1982 if((c = sel) == nexttiled(clients, c->monitor))
1983 if(!(c = nexttiled(c->next, c->monitor)))
1984 return;
1985 detach(c);
1986 attach(c);
1987 focus(c);
1988 arrange();
1989 }
1990
1991 void
1992 movetomonitor(const char *arg) {
1993 if (sel) {
1994 sel->monitor = arg ? atoi(arg) : (sel->monitor+1) % mcount;
1995
1996 memcpy(sel->tags, monitors[sel->monitor].seltags, sizeof initags);
1997 resize(sel, monitors[sel->monitor].wax, monitors[sel->monitor].way, sel->w, sel->h, True);
1998 arrange();
1999 }
2000 }
2001
2002 void
2003 selectmonitor(const char *arg) {
2004 Monitor *m = &monitors[arg ? atoi(arg) : (monitorat()+1) % mcount];
2005
2006 XWarpPointer(dpy, None, m->root, 0, 0, 0, 0, m->wax+m->waw/2, m->way+m->wah/2);
2007 focus(NULL);
2008 }
2009
2010
2011 int
2012 main(int argc, char *argv[]) {
2013 if(argc == 2 && !strcmp("-v", argv[1]))
2014 eprint("dwm-"VERSION", © 2006-2007 Anselm R. Garbe, Sander van Dijk, "
2015 "Jukka Salmi, Premysl Hruby, Szabolcs Nagy, Christof Musik\n");
2016 else if(argc != 1)
2017 eprint("usage: dwm [-v]\n");
2018
2019 setlocale(LC_CTYPE, "");
2020 if(!(dpy = XOpenDisplay(0)))
2021 eprint("dwm: cannot open display\n");
2022
2023 checkotherwm();
2024 setup();
2025 drawbar();
2026 scan();
2027 run();
2028 cleanup();
2029
2030 XCloseDisplay(dpy);
2031 return 0;
2032 }