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removed Monitor->dc, unnecessary
[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, isurgent;
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 monitor;
121 Window barwin;
122 int sx, sy, sw, sh, wax, way, wah, waw;
123 Bool *seltags;
124 Bool *prevtags;
125 Layout *layout;
126 double mwfact;
127 } Monitor;
128
129 /* function declarations */
130 void applyrules(Client *c);
131 void arrange(void);
132 void attach(Client *c);
133 void attachstack(Client *c);
134 void ban(Client *c);
135 void buttonpress(XEvent *e);
136 void checkotherwm(void);
137 void cleanup(void);
138 void compileregs(void);
139 void configure(Client *c);
140 void configurenotify(XEvent *e);
141 void configurerequest(XEvent *e);
142 void destroynotify(XEvent *e);
143 void detach(Client *c);
144 void detachstack(Client *c);
145 void drawbar(void);
146 void drawsquare(Monitor *, Bool filled, Bool empty, Bool invert, unsigned long col[ColLast]);
147 void drawtext(Monitor *, const char *text, unsigned long col[ColLast], Bool invert);
148 void *emallocz(unsigned int size);
149 void enternotify(XEvent *e);
150 void eprint(const char *errstr, ...);
151 void expose(XEvent *e);
152 void floating(void); /* default floating layout */
153 void focus(Client *c);
154 void focusin(XEvent *e);
155 void focusnext(const char *arg);
156 void focusprev(const char *arg);
157 Client *getclient(Window w);
158 unsigned long getcolor(const char *colstr);
159 long getstate(Window w);
160 Bool gettextprop(Window w, Atom atom, char *text, unsigned int size);
161 void grabbuttons(Client *c, Bool focused);
162 void grabkeys(void);
163 unsigned int idxoftag(const char *tag);
164 void initfont(const char *fontstr);
165 Bool isoccupied(unsigned int monitor, unsigned int t);
166 Bool isprotodel(Client *c);
167 Bool isurgent(unsigned int monitor, unsigned int t);
168 Bool isvisible(Client *c, int monitor);
169 void keypress(XEvent *e);
170 void killclient(const char *arg);
171 void manage(Window w, XWindowAttributes *wa);
172 void mappingnotify(XEvent *e);
173 void maprequest(XEvent *e);
174 void movemouse(Client *c);
175 Client *nexttiled(Client *c, int monitor);
176 void propertynotify(XEvent *e);
177 void quit(const char *arg);
178 void reapply(const char *arg);
179 void resize(Client *c, int x, int y, int w, int h, Bool sizehints);
180 void resizemouse(Client *c);
181 void restack(void);
182 void run(void);
183 void scan(void);
184 void setclientstate(Client *c, long state);
185 void setlayout(const char *arg);
186 void setmwfact(const char *arg);
187 void setup(void);
188 void spawn(const char *arg);
189 void tag(const char *arg);
190 unsigned int textnw(const char *text, unsigned int len);
191 unsigned int textw(const char *text);
192 void tile(void);
193 void togglebar(const char *arg);
194 void togglefloating(const char *arg);
195 void toggletag(const char *arg);
196 void toggleview(const char *arg);
197 void unban(Client *c);
198 void unmanage(Client *c);
199 void unmapnotify(XEvent *e);
200 void updatebarpos(Monitor *m);
201 void updatesizehints(Client *c);
202 void updatetitle(Client *c);
203 void updatewmhints(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 selmonitor = 0;
218 int screen;
219 int (*xerrorxlib)(Display *, XErrorEvent *);
220 unsigned int bh, bpos;
221 unsigned int blw = 0;
222 unsigned int numlockmask = 0;
223 void (*handler[LASTEvent]) (XEvent *) = {
224 [ButtonPress] = buttonpress,
225 [ConfigureRequest] = configurerequest,
226 [ConfigureNotify] = configurenotify,
227 [DestroyNotify] = destroynotify,
228 [EnterNotify] = enternotify,
229 [Expose] = expose,
230 [FocusIn] = focusin,
231 [KeyPress] = keypress,
232 [MappingNotify] = mappingnotify,
233 [MapRequest] = maprequest,
234 [PropertyNotify] = propertynotify,
235 [UnmapNotify] = unmapnotify
236 };
237 Atom wmatom[WMLast], netatom[NetLast];
238 Bool isxinerama = False;
239 Bool domwfact = True;
240 Bool dozoom = True;
241 Bool otherwm, readin;
242 Bool running = True;
243 Client *clients = NULL;
244 Client *sel = NULL;
245 Client *stack = NULL;
246 Cursor cursor[CurLast];
247 Display *dpy;
248 DC dc = {0};
249 Regs *regs = NULL;
250 Monitor *monitors;
251 Window root;
252
253 /* configuration, allows nested code to access above variables */
254 #include "config.h"
255
256 //Bool prevtags[LENGTH(tags)];
257
258 /* function implementations */
259 void
260 applyrules(Client *c) {
261 static char buf[512];
262 unsigned int i, j;
263 regmatch_t tmp;
264 Bool matched_tag = False;
265 Bool matched_monitor = False;
266 XClassHint ch = { 0 };
267
268 /* rule matching */
269 XGetClassHint(dpy, c->win, &ch);
270 snprintf(buf, sizeof buf, "%s:%s:%s",
271 ch.res_class ? ch.res_class : "",
272 ch.res_name ? ch.res_name : "", c->name);
273 for(i = 0; i < LENGTH(rules); i++)
274 if(regs[i].propregex && !regexec(regs[i].propregex, buf, 1, &tmp, 0)) {
275 if (rules[i].monitor >= 0 && rules[i].monitor < mcount) {
276 matched_monitor = True;
277 c->monitor = rules[i].monitor;
278 }
279
280 c->isfloating = rules[i].isfloating;
281 for(j = 0; regs[i].tagregex && j < LENGTH(tags); j++) {
282 if(!regexec(regs[i].tagregex, tags[j], 1, &tmp, 0)) {
283 matched_tag = True;
284 c->tags[j] = True;
285 }
286 }
287 }
288 if(ch.res_class)
289 XFree(ch.res_class);
290 if(ch.res_name)
291 XFree(ch.res_name);
292 if(!matched_tag)
293 memcpy(c->tags, monitors[monitorat()].seltags, sizeof initags);
294 if (!matched_monitor)
295 c->monitor = monitorat();
296 }
297
298 void
299 arrange(void) {
300 Client *c;
301
302 for(c = clients; c; c = c->next)
303 if(isvisible(c, c->monitor))
304 unban(c);
305 else
306 ban(c);
307
308 monitors[selmonitor].layout->arrange();
309 focus(NULL);
310 restack();
311 }
312
313 void
314 attach(Client *c) {
315 if(clients)
316 clients->prev = c;
317 c->next = clients;
318 clients = c;
319 }
320
321 void
322 attachstack(Client *c) {
323 c->snext = stack;
324 stack = c;
325 }
326
327 void
328 ban(Client *c) {
329 if(c->isbanned)
330 return;
331 XMoveWindow(dpy, c->win, c->x + 3 * monitors[c->monitor].sw, c->y);
332 c->isbanned = True;
333 }
334
335 void
336 buttonpress(XEvent *e) {
337 unsigned int i, x;
338 Client *c;
339 XButtonPressedEvent *ev = &e->xbutton;
340
341 Monitor *m = &monitors[monitorat()];
342
343 if(ev->window == m->barwin) {
344 x = 0;
345 for(i = 0; i < LENGTH(tags); i++) {
346 x += textw(tags[i]);
347 if(ev->x < x) {
348 if(ev->button == Button1) {
349 if(ev->state & MODKEY)
350 tag(tags[i]);
351 else
352 view(tags[i]);
353 }
354 else if(ev->button == Button3) {
355 if(ev->state & MODKEY)
356 toggletag(tags[i]);
357 else
358 toggleview(tags[i]);
359 }
360 return;
361 }
362 }
363 if((ev->x < x + blw) && ev->button == Button1)
364 setlayout(NULL);
365 }
366 else if((c = getclient(ev->window))) {
367 focus(c);
368 if(CLEANMASK(ev->state) != MODKEY)
369 return;
370 if(ev->button == Button1) {
371 restack();
372 movemouse(c);
373 }
374 else if(ev->button == Button2) {
375 if((floating != m->layout->arrange) && c->isfloating)
376 togglefloating(NULL);
377 else
378 zoom(NULL);
379 }
380 else if(ev->button == Button3 && !c->isfixed) {
381 restack();
382 resizemouse(c);
383 }
384 }
385 }
386
387 void
388 checkotherwm(void) {
389 otherwm = False;
390 XSetErrorHandler(xerrorstart);
391
392 /* this causes an error if some other window manager is running */
393 XSelectInput(dpy, DefaultRootWindow(dpy), SubstructureRedirectMask);
394 XSync(dpy, False);
395 if(otherwm)
396 eprint("dwm: another window manager is already running\n");
397 XSync(dpy, False);
398 XSetErrorHandler(NULL);
399 xerrorxlib = XSetErrorHandler(xerror);
400 XSync(dpy, False);
401 }
402
403 void
404 cleanup(void) {
405 unsigned int i;
406 close(STDIN_FILENO);
407 while(stack) {
408 unban(stack);
409 unmanage(stack);
410 }
411 if(dc.font.set)
412 XFreeFontSet(dpy, dc.font.set);
413 else
414 XFreeFont(dpy, dc.font.xfont);
415
416 XUngrabKey(dpy, AnyKey, AnyModifier, root);
417 XFreePixmap(dpy, dc.drawable);
418 XFreeGC(dpy, dc.gc);
419 XFreeCursor(dpy, cursor[CurNormal]);
420 XFreeCursor(dpy, cursor[CurResize]);
421 XFreeCursor(dpy, cursor[CurMove]);
422 for(i = 0; i < mcount; i++)
423 XDestroyWindow(dpy, monitors[i].barwin);
424 XSync(dpy, False);
425 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
426 }
427
428 void
429 compileregs(void) {
430 unsigned int i;
431 regex_t *reg;
432
433 if(regs)
434 return;
435 regs = emallocz(LENGTH(rules) * sizeof(Regs));
436 for(i = 0; i < LENGTH(rules); i++) {
437 if(rules[i].prop) {
438 reg = emallocz(sizeof(regex_t));
439 if(regcomp(reg, rules[i].prop, REG_EXTENDED))
440 free(reg);
441 else
442 regs[i].propregex = reg;
443 }
444 if(rules[i].tags) {
445 reg = emallocz(sizeof(regex_t));
446 if(regcomp(reg, rules[i].tags, REG_EXTENDED))
447 free(reg);
448 else
449 regs[i].tagregex = reg;
450 }
451 }
452 }
453
454 void
455 configure(Client *c) {
456 XConfigureEvent ce;
457
458 ce.type = ConfigureNotify;
459 ce.display = dpy;
460 ce.event = c->win;
461 ce.window = c->win;
462 ce.x = c->x;
463 ce.y = c->y;
464 ce.width = c->w;
465 ce.height = c->h;
466 ce.border_width = c->border;
467 ce.above = None;
468 ce.override_redirect = False;
469 XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&ce);
470 }
471
472 void
473 configurenotify(XEvent *e) {
474 XConfigureEvent *ev = &e->xconfigure;
475 Monitor *m = &monitors[selmonitor];
476
477 if(ev->window == root && (ev->width != m->sw || ev->height != m->sh)) {
478 /* TODO -- update Xinerama dimensions here */
479 m->sw = ev->width;
480 m->sh = ev->height;
481 XFreePixmap(dpy, dc.drawable);
482 dc.drawable = XCreatePixmap(dpy, root, DisplayWidth(root, screen), bh, DefaultDepth(dpy, screen));
483 XResizeWindow(dpy, m->barwin, m->sw, bh);
484 updatebarpos(m);
485 arrange();
486 }
487 }
488
489 void
490 configurerequest(XEvent *e) {
491 Client *c;
492 XConfigureRequestEvent *ev = &e->xconfigurerequest;
493 XWindowChanges wc;
494
495 if((c = getclient(ev->window))) {
496 Monitor *m = &monitors[c->monitor];
497 if(ev->value_mask & CWBorderWidth)
498 c->border = ev->border_width;
499 if(c->isfixed || c->isfloating || (floating == m->layout->arrange)) {
500 if(ev->value_mask & CWX)
501 c->x = m->sx+ev->x;
502 if(ev->value_mask & CWY)
503 c->y = m->sy+ev->y;
504 if(ev->value_mask & CWWidth)
505 c->w = ev->width;
506 if(ev->value_mask & CWHeight)
507 c->h = ev->height;
508 if((c->x - m->sx + c->w) > m->sw && c->isfloating)
509 c->x = m->sx + (m->sw / 2 - c->w / 2); /* center in x direction */
510 if((c->y - m->sy + c->h) > m->sh && c->isfloating)
511 c->y = m->sy + (m->sh / 2 - c->h / 2); /* center in y direction */
512 if((ev->value_mask & (CWX | CWY))
513 && !(ev->value_mask & (CWWidth | CWHeight)))
514 configure(c);
515 if(isvisible(c, monitorat()))
516 XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
517 }
518 else
519 configure(c);
520 }
521 else {
522 wc.x = ev->x;
523 wc.y = ev->y;
524 wc.width = ev->width;
525 wc.height = ev->height;
526 wc.border_width = ev->border_width;
527 wc.sibling = ev->above;
528 wc.stack_mode = ev->detail;
529 XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
530 }
531 XSync(dpy, False);
532 }
533
534 void
535 destroynotify(XEvent *e) {
536 Client *c;
537 XDestroyWindowEvent *ev = &e->xdestroywindow;
538
539 if((c = getclient(ev->window)))
540 unmanage(c);
541 }
542
543 void
544 detach(Client *c) {
545 if(c->prev)
546 c->prev->next = c->next;
547 if(c->next)
548 c->next->prev = c->prev;
549 if(c == clients)
550 clients = c->next;
551 c->next = c->prev = NULL;
552 }
553
554 void
555 detachstack(Client *c) {
556 Client **tc;
557
558 for(tc=&stack; *tc && *tc != c; tc=&(*tc)->snext);
559 *tc = c->snext;
560 }
561
562 void
563 drawbar(void) {
564 int i, j, x;
565 Client *c;
566
567 for(i = 0; i < mcount; i++) {
568 Monitor *m = &monitors[i];
569 dc.x = 0;
570 for(c = stack; c && !isvisible(c, i); c = c->snext);
571 fprintf(stderr, "m%d %s\n", i, c ? c->name : "NIL");
572 for(j = 0; j < LENGTH(tags); j++) {
573 dc.w = textw(tags[j]);
574 if(m->seltags[j]) {
575 drawtext(m, tags[j], dc.sel, isurgent(i, j));
576 drawsquare(m, c && c->tags[j] && c->monitor == i,
577 isoccupied(i, j), isurgent(i, j), dc.sel);
578 }
579 else {
580 drawtext(m, tags[j], dc.norm, isurgent(i, j));
581 drawsquare(m, c && c->tags[j] && c->monitor == i,
582 isoccupied(i, j), isurgent(i, j), dc.norm);
583 }
584 dc.x += dc.w;
585 }
586 dc.w = blw;
587 drawtext(m, m->layout->symbol, dc.norm, False);
588 x = dc.x + dc.w;
589 if(i == selmonitor) {
590 dc.w = textw(stext);
591 dc.x = m->sw - dc.w;
592 if(dc.x < x) {
593 dc.x = x;
594 dc.w = m->sw - x;
595 }
596 drawtext(m, stext, dc.norm, False);
597 }
598 else
599 dc.x = m->sw;
600 if((dc.w = dc.x - x) > bh) {
601 dc.x = x;
602 if(c) {
603 drawtext(m, c->name, dc.sel, False);
604 drawsquare(m, False, c->isfloating, False, dc.sel);
605 }
606 else
607 drawtext(m, NULL, dc.norm, False);
608 }
609 XCopyArea(dpy, dc.drawable, m->barwin, dc.gc, 0, 0, m->sw, bh, 0, 0);
610 XSync(dpy, False);
611 }
612 }
613
614 void
615 drawsquare(Monitor *m, Bool filled, Bool empty, Bool invert, unsigned long col[ColLast]) {
616 int x;
617 XGCValues gcv;
618 XRectangle r = { dc.x, dc.y, dc.w, dc.h };
619
620 gcv.foreground = col[invert ? ColBG : ColFG];
621 XChangeGC(dpy, dc.gc, GCForeground, &gcv);
622 x = (dc.font.ascent + dc.font.descent + 2) / 4;
623 r.x = dc.x + 1;
624 r.y = dc.y + 1;
625 if(filled) {
626 r.width = r.height = x + 1;
627 XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
628 }
629 else if(empty) {
630 r.width = r.height = x;
631 XDrawRectangles(dpy, dc.drawable, dc.gc, &r, 1);
632 }
633 }
634
635 void
636 drawtext(Monitor *m, const char *text, unsigned long col[ColLast], Bool invert) {
637 int x, y, w, h;
638 static char buf[256];
639 unsigned int len, olen;
640 XRectangle r = { dc.x, dc.y, dc.w, dc.h };
641
642 XSetForeground(dpy, dc.gc, col[invert ? ColFG : ColBG]);
643 XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
644 if(!text)
645 return;
646 w = 0;
647 olen = len = strlen(text);
648 if(len >= sizeof buf)
649 len = sizeof buf - 1;
650 memcpy(buf, text, len);
651 buf[len] = 0;
652 h = dc.font.ascent + dc.font.descent;
653 y = dc.y + (dc.h / 2) - (h / 2) + dc.font.ascent;
654 x = dc.x + (h / 2);
655 /* shorten text if necessary */
656 while(len && (w = textnw(buf, len)) > dc.w - h)
657 buf[--len] = 0;
658 if(len < olen) {
659 if(len > 1)
660 buf[len - 1] = '.';
661 if(len > 2)
662 buf[len - 2] = '.';
663 if(len > 3)
664 buf[len - 3] = '.';
665 }
666 if(w > dc.w)
667 return; /* too long */
668 XSetForeground(dpy, dc.gc, col[invert ? ColBG : ColFG]);
669 if(dc.font.set)
670 XmbDrawString(dpy, dc.drawable, dc.font.set, dc.gc, x, y, buf, len);
671 else
672 XDrawString(dpy, dc.drawable, dc.gc, x, y, buf, len);
673 }
674
675 void *
676 emallocz(unsigned int size) {
677 void *res = calloc(1, size);
678
679 if(!res)
680 eprint("fatal: could not malloc() %u bytes\n", size);
681 return res;
682 }
683
684 void
685 enternotify(XEvent *e) {
686 Client *c;
687 XCrossingEvent *ev = &e->xcrossing;
688
689 if(ev->mode != NotifyNormal || ev->detail == NotifyInferior) {
690 if(!isxinerama || ev->window != root)
691 return;
692 }
693 if((c = getclient(ev->window)))
694 focus(c);
695 else {
696 selmonitor = monitorat();
697 fprintf(stderr, "updating selmonitor %d\n", selmonitor);
698 focus(NULL);
699 }
700 }
701
702 void
703 eprint(const char *errstr, ...) {
704 va_list ap;
705
706 va_start(ap, errstr);
707 vfprintf(stderr, errstr, ap);
708 va_end(ap);
709 exit(EXIT_FAILURE);
710 }
711
712 void
713 expose(XEvent *e) {
714 XExposeEvent *ev = &e->xexpose;
715
716 if(ev->count == 0) {
717 if(ev->window == monitors[selmonitor].barwin)
718 drawbar();
719 }
720 }
721
722 void
723 floating(void) { /* default floating layout */
724 Client *c;
725
726 domwfact = dozoom = False;
727 for(c = clients; c; c = c->next)
728 if(isvisible(c, selmonitor))
729 resize(c, c->x, c->y, c->w, c->h, True);
730 }
731
732 void
733 focus(Client *c) {
734 Monitor *m;
735
736 if(c)
737 selmonitor = c->monitor;
738 m = &monitors[selmonitor];
739 if(!c || (c && !isvisible(c, selmonitor)))
740 for(c = stack; c && !isvisible(c, c->monitor); c = c->snext);
741 if(sel && sel != c) {
742 grabbuttons(sel, False);
743 XSetWindowBorder(dpy, sel->win, dc.norm[ColBorder]);
744 }
745 if(c) {
746 detachstack(c);
747 attachstack(c);
748 grabbuttons(c, True);
749 }
750 sel = c;
751 drawbar();
752 if(c) {
753 XSetWindowBorder(dpy, c->win, dc.sel[ColBorder]);
754 XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
755 selmonitor = c->monitor;
756 }
757 else {
758 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
759 drawbar();
760 }
761 }
762
763 void
764 focusin(XEvent *e) { /* there are some broken focus acquiring clients */
765 XFocusChangeEvent *ev = &e->xfocus;
766
767 if(sel && ev->window != sel->win)
768 XSetInputFocus(dpy, sel->win, RevertToPointerRoot, CurrentTime);
769 }
770
771 void
772 focusnext(const char *arg) {
773 Client *c;
774
775 if(!sel)
776 return;
777 for(c = sel->next; c && !isvisible(c, selmonitor); c = c->next);
778 if(!c)
779 for(c = clients; c && !isvisible(c, selmonitor); c = c->next);
780 if(c) {
781 focus(c);
782 restack();
783 }
784 }
785
786 void
787 focusprev(const char *arg) {
788 Client *c;
789
790 if(!sel)
791 return;
792 for(c = sel->prev; c && !isvisible(c, selmonitor); c = c->prev);
793 if(!c) {
794 for(c = clients; c && c->next; c = c->next);
795 for(; c && !isvisible(c, selmonitor); c = c->prev);
796 }
797 if(c) {
798 focus(c);
799 restack();
800 }
801 }
802
803 Client *
804 getclient(Window w) {
805 Client *c;
806
807 for(c = clients; c && c->win != w; c = c->next);
808 return c;
809 }
810
811 unsigned long
812 getcolor(const char *colstr) {
813 Colormap cmap = DefaultColormap(dpy, screen);
814 XColor color;
815
816 if(!XAllocNamedColor(dpy, cmap, colstr, &color, &color))
817 eprint("error, cannot allocate color '%s'\n", colstr);
818 return color.pixel;
819 }
820
821 long
822 getstate(Window w) {
823 int format, status;
824 long result = -1;
825 unsigned char *p = NULL;
826 unsigned long n, extra;
827 Atom real;
828
829 status = XGetWindowProperty(dpy, w, wmatom[WMState], 0L, 2L, False, wmatom[WMState],
830 &real, &format, &n, &extra, (unsigned char **)&p);
831 if(status != Success)
832 return -1;
833 if(n != 0)
834 result = *p;
835 XFree(p);
836 return result;
837 }
838
839 Bool
840 gettextprop(Window w, Atom atom, char *text, unsigned int size) {
841 char **list = NULL;
842 int n;
843 XTextProperty name;
844
845 if(!text || size == 0)
846 return False;
847 text[0] = '\0';
848 XGetTextProperty(dpy, w, &name, atom);
849 if(!name.nitems)
850 return False;
851 if(name.encoding == XA_STRING)
852 strncpy(text, (char *)name.value, size - 1);
853 else {
854 if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
855 && n > 0 && *list) {
856 strncpy(text, *list, size - 1);
857 XFreeStringList(list);
858 }
859 }
860 text[size - 1] = '\0';
861 XFree(name.value);
862 return True;
863 }
864
865 void
866 grabbuttons(Client *c, Bool focused) {
867 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
868
869 if(focused) {
870 XGrabButton(dpy, Button1, MODKEY, c->win, False, BUTTONMASK,
871 GrabModeAsync, GrabModeSync, None, None);
872 XGrabButton(dpy, Button1, MODKEY | LockMask, c->win, False, BUTTONMASK,
873 GrabModeAsync, GrabModeSync, None, None);
874 XGrabButton(dpy, Button1, MODKEY | numlockmask, c->win, False, BUTTONMASK,
875 GrabModeAsync, GrabModeSync, None, None);
876 XGrabButton(dpy, Button1, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
877 GrabModeAsync, GrabModeSync, None, None);
878
879 XGrabButton(dpy, Button2, MODKEY, c->win, False, BUTTONMASK,
880 GrabModeAsync, GrabModeSync, None, None);
881 XGrabButton(dpy, Button2, MODKEY | LockMask, c->win, False, BUTTONMASK,
882 GrabModeAsync, GrabModeSync, None, None);
883 XGrabButton(dpy, Button2, MODKEY | numlockmask, c->win, False, BUTTONMASK,
884 GrabModeAsync, GrabModeSync, None, None);
885 XGrabButton(dpy, Button2, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
886 GrabModeAsync, GrabModeSync, None, None);
887
888 XGrabButton(dpy, Button3, MODKEY, c->win, False, BUTTONMASK,
889 GrabModeAsync, GrabModeSync, None, None);
890 XGrabButton(dpy, Button3, MODKEY | LockMask, c->win, False, BUTTONMASK,
891 GrabModeAsync, GrabModeSync, None, None);
892 XGrabButton(dpy, Button3, MODKEY | numlockmask, c->win, False, BUTTONMASK,
893 GrabModeAsync, GrabModeSync, None, None);
894 XGrabButton(dpy, Button3, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
895 GrabModeAsync, GrabModeSync, None, None);
896 }
897 else
898 XGrabButton(dpy, AnyButton, AnyModifier, c->win, False, BUTTONMASK,
899 GrabModeAsync, GrabModeSync, None, None);
900 }
901
902 void
903 grabkeys(void) {
904 unsigned int i, j;
905 KeyCode code;
906 XModifierKeymap *modmap;
907
908 /* init modifier map */
909 modmap = XGetModifierMapping(dpy);
910 for(i = 0; i < 8; i++)
911 for(j = 0; j < modmap->max_keypermod; j++) {
912 if(modmap->modifiermap[i * modmap->max_keypermod + j] == XKeysymToKeycode(dpy, XK_Num_Lock))
913 numlockmask = (1 << i);
914 }
915 XFreeModifiermap(modmap);
916
917 XUngrabKey(dpy, AnyKey, AnyModifier, root);
918 for(i = 0; i < LENGTH(keys); i++) {
919 code = XKeysymToKeycode(dpy, keys[i].keysym);
920 XGrabKey(dpy, code, keys[i].mod, root, True,
921 GrabModeAsync, GrabModeAsync);
922 XGrabKey(dpy, code, keys[i].mod | LockMask, root, True,
923 GrabModeAsync, GrabModeAsync);
924 XGrabKey(dpy, code, keys[i].mod | numlockmask, root, True,
925 GrabModeAsync, GrabModeAsync);
926 XGrabKey(dpy, code, keys[i].mod | numlockmask | LockMask, root, True,
927 GrabModeAsync, GrabModeAsync);
928 }
929 }
930
931 unsigned int
932 idxoftag(const char *tag) {
933 unsigned int i;
934
935 for(i = 0; (i < LENGTH(tags)) && (tags[i] != tag); i++);
936 return (i < LENGTH(tags)) ? i : 0;
937 }
938
939 void
940 initfont(const char *fontstr) {
941 char *def, **missing;
942 int i, n;
943
944 missing = NULL;
945 if(dc.font.set)
946 XFreeFontSet(dpy, dc.font.set);
947 dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
948 if(missing) {
949 while(n--)
950 fprintf(stderr, "dwm: missing fontset: %s\n", missing[n]);
951 XFreeStringList(missing);
952 }
953 if(dc.font.set) {
954 XFontSetExtents *font_extents;
955 XFontStruct **xfonts;
956 char **font_names;
957 dc.font.ascent = dc.font.descent = 0;
958 font_extents = XExtentsOfFontSet(dc.font.set);
959 n = XFontsOfFontSet(dc.font.set, &xfonts, &font_names);
960 for(i = 0, dc.font.ascent = 0, dc.font.descent = 0; i < n; i++) {
961 if(dc.font.ascent < (*xfonts)->ascent)
962 dc.font.ascent = (*xfonts)->ascent;
963 if(dc.font.descent < (*xfonts)->descent)
964 dc.font.descent = (*xfonts)->descent;
965 xfonts++;
966 }
967 }
968 else {
969 if(dc.font.xfont)
970 XFreeFont(dpy, dc.font.xfont);
971 dc.font.xfont = NULL;
972 if(!(dc.font.xfont = XLoadQueryFont(dpy, fontstr))
973 && !(dc.font.xfont = XLoadQueryFont(dpy, "fixed")))
974 eprint("error, cannot load font: '%s'\n", fontstr);
975 dc.font.ascent = dc.font.xfont->ascent;
976 dc.font.descent = dc.font.xfont->descent;
977 }
978 dc.font.height = dc.font.ascent + dc.font.descent;
979 }
980
981 Bool
982 isoccupied(unsigned int monitor, unsigned int t) {
983 Client *c;
984
985 for(c = clients; c; c = c->next)
986 if(c->tags[t] && c->monitor == monitor)
987 return True;
988 return False;
989 }
990
991 Bool
992 isprotodel(Client *c) {
993 int i, n;
994 Atom *protocols;
995 Bool ret = False;
996
997 if(XGetWMProtocols(dpy, c->win, &protocols, &n)) {
998 for(i = 0; !ret && i < n; i++)
999 if(protocols[i] == wmatom[WMDelete])
1000 ret = True;
1001 XFree(protocols);
1002 }
1003 return ret;
1004 }
1005
1006 Bool
1007 isurgent(unsigned int monitor, unsigned int t) {
1008 Client *c;
1009
1010 for(c = clients; c; c = c->next)
1011 if(c->monitor == monitor && c->isurgent && c->tags[t])
1012 return True;
1013 return False;
1014 }
1015
1016 Bool
1017 isvisible(Client *c, int monitor) {
1018 unsigned int i;
1019
1020 if(c->monitor != monitor)
1021 return False;
1022 for(i = 0; i < LENGTH(tags); i++)
1023 if(c->tags[i] && monitors[c->monitor].seltags[i])
1024 return True;
1025 return False;
1026 }
1027
1028 void
1029 keypress(XEvent *e) {
1030 unsigned int i;
1031 KeySym keysym;
1032 XKeyEvent *ev;
1033
1034 ev = &e->xkey;
1035 keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
1036 for(i = 0; i < LENGTH(keys); i++)
1037 if(keysym == keys[i].keysym
1038 && CLEANMASK(keys[i].mod) == CLEANMASK(ev->state))
1039 {
1040 if(keys[i].func)
1041 keys[i].func(keys[i].arg);
1042 }
1043 }
1044
1045 void
1046 killclient(const char *arg) {
1047 XEvent ev;
1048
1049 if(!sel)
1050 return;
1051 if(isprotodel(sel)) {
1052 ev.type = ClientMessage;
1053 ev.xclient.window = sel->win;
1054 ev.xclient.message_type = wmatom[WMProtocols];
1055 ev.xclient.format = 32;
1056 ev.xclient.data.l[0] = wmatom[WMDelete];
1057 ev.xclient.data.l[1] = CurrentTime;
1058 XSendEvent(dpy, sel->win, False, NoEventMask, &ev);
1059 }
1060 else
1061 XKillClient(dpy, sel->win);
1062 }
1063
1064 void
1065 manage(Window w, XWindowAttributes *wa) {
1066 Client *c, *t = NULL;
1067 Monitor *m;
1068 Status rettrans;
1069 Window trans;
1070 XWindowChanges wc;
1071
1072 c = emallocz(sizeof(Client));
1073 c->tags = emallocz(sizeof initags);
1074 c->win = w;
1075
1076 applyrules(c);
1077
1078 m = &monitors[c->monitor];
1079
1080 c->x = wa->x + m->sx;
1081 c->y = wa->y + m->sy;
1082 c->w = wa->width;
1083 c->h = wa->height;
1084 c->oldborder = wa->border_width;
1085
1086 if(c->w == m->sw && c->h == m->sh) {
1087 c->x = m->sx;
1088 c->y = m->sy;
1089 c->border = wa->border_width;
1090 }
1091 else {
1092 if(c->x + c->w + 2 * c->border > m->wax + m->waw)
1093 c->x = m->wax + m->waw - c->w - 2 * c->border;
1094 if(c->y + c->h + 2 * c->border > m->way + m->wah)
1095 c->y = m->way + m->wah - c->h - 2 * c->border;
1096 if(c->x < m->wax)
1097 c->x = m->wax;
1098 if(c->y < m->way)
1099 c->y = m->way;
1100 c->border = BORDERPX;
1101 }
1102 wc.border_width = c->border;
1103 XConfigureWindow(dpy, w, CWBorderWidth, &wc);
1104 XSetWindowBorder(dpy, w, dc.norm[ColBorder]);
1105 configure(c); /* propagates border_width, if size doesn't change */
1106 updatesizehints(c);
1107 XSelectInput(dpy, w, EnterWindowMask | FocusChangeMask | PropertyChangeMask | StructureNotifyMask);
1108 grabbuttons(c, False);
1109 updatetitle(c);
1110 if((rettrans = XGetTransientForHint(dpy, w, &trans) == Success))
1111 for(t = clients; t && t->win != trans; t = t->next);
1112 if(t)
1113 memcpy(c->tags, t->tags, sizeof initags);
1114 if(!c->isfloating)
1115 c->isfloating = (rettrans == Success) || c->isfixed;
1116 attach(c);
1117 attachstack(c);
1118 XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h); /* some windows require this */
1119 ban(c);
1120 XMapWindow(dpy, c->win);
1121 setclientstate(c, NormalState);
1122 arrange();
1123 }
1124
1125 void
1126 mappingnotify(XEvent *e) {
1127 XMappingEvent *ev = &e->xmapping;
1128
1129 XRefreshKeyboardMapping(ev);
1130 if(ev->request == MappingKeyboard)
1131 grabkeys();
1132 }
1133
1134 void
1135 maprequest(XEvent *e) {
1136 static XWindowAttributes wa;
1137 XMapRequestEvent *ev = &e->xmaprequest;
1138
1139 if(!XGetWindowAttributes(dpy, ev->window, &wa))
1140 return;
1141 if(wa.override_redirect)
1142 return;
1143 if(!getclient(ev->window))
1144 manage(ev->window, &wa);
1145 }
1146
1147 int
1148 monitorat() {
1149 int i, x, y;
1150 Window win;
1151 unsigned int mask;
1152
1153 XQueryPointer(dpy, root, &win, &win, &x, &y, &i, &i, &mask);
1154 for(i = 0; i < mcount; i++) {
1155 if((x >= monitors[i].sx && x < monitors[i].sx + monitors[i].sw)
1156 && (y >= monitors[i].sy && y < monitors[i].sy + monitors[i].sh)) {
1157 return i;
1158 }
1159 }
1160 return 0;
1161 }
1162
1163 void
1164 movemouse(Client *c) {
1165 int x1, y1, ocx, ocy, di, nx, ny;
1166 unsigned int dui;
1167 Window dummy;
1168 XEvent ev;
1169
1170 ocx = nx = c->x;
1171 ocy = ny = c->y;
1172 if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
1173 None, cursor[CurMove], CurrentTime) != GrabSuccess)
1174 return;
1175 XQueryPointer(dpy, root, &dummy, &dummy, &x1, &y1, &di, &di, &dui);
1176 for(;;) {
1177 XMaskEvent(dpy, MOUSEMASK | ExposureMask | SubstructureRedirectMask, &ev);
1178 switch (ev.type) {
1179 case ButtonRelease:
1180 XUngrabPointer(dpy, CurrentTime);
1181 return;
1182 case ConfigureRequest:
1183 case Expose:
1184 case MapRequest:
1185 handler[ev.type](&ev);
1186 break;
1187 case MotionNotify:
1188 XSync(dpy, False);
1189 nx = ocx + (ev.xmotion.x - x1);
1190 ny = ocy + (ev.xmotion.y - y1);
1191 Monitor *m = &monitors[monitorat()];
1192 if(abs(m->wax - nx) < SNAP)
1193 nx = m->wax;
1194 else if(abs((m->wax + m->waw) - (nx + c->w + 2 * c->border)) < SNAP)
1195 nx = m->wax + m->waw - c->w - 2 * c->border;
1196 if(abs(m->way - ny) < SNAP)
1197 ny = m->way;
1198 else if(abs((m->way + m->wah) - (ny + c->h + 2 * c->border)) < SNAP)
1199 ny = m->way + m->wah - c->h - 2 * c->border;
1200 if((monitors[selmonitor].layout->arrange != floating) && (abs(nx - c->x) > SNAP || abs(ny - c->y) > SNAP))
1201 togglefloating(NULL);
1202 if((monitors[selmonitor].layout->arrange == floating) || c->isfloating)
1203 resize(c, nx, ny, c->w, c->h, False);
1204 memcpy(c->tags, monitors[monitorat()].seltags, sizeof initags);
1205 break;
1206 }
1207 }
1208 }
1209
1210 Client *
1211 nexttiled(Client *c, int monitor) {
1212 for(; c && (c->isfloating || !isvisible(c, monitor)); c = c->next);
1213 return c;
1214 }
1215
1216 void
1217 propertynotify(XEvent *e) {
1218 Client *c;
1219 Window trans;
1220 XPropertyEvent *ev = &e->xproperty;
1221
1222 if(ev->state == PropertyDelete)
1223 return; /* ignore */
1224 if((c = getclient(ev->window))) {
1225 switch (ev->atom) {
1226 default: break;
1227 case XA_WM_TRANSIENT_FOR:
1228 XGetTransientForHint(dpy, c->win, &trans);
1229 if(!c->isfloating && (c->isfloating = (getclient(trans) != NULL)))
1230 arrange();
1231 break;
1232 case XA_WM_NORMAL_HINTS:
1233 updatesizehints(c);
1234 break;
1235 case XA_WM_HINTS:
1236 updatewmhints(c);
1237 drawbar();
1238 break;
1239 }
1240 if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
1241 updatetitle(c);
1242 if(c == sel)
1243 drawbar();
1244 }
1245 }
1246 }
1247
1248 void
1249 quit(const char *arg) {
1250 readin = running = False;
1251 }
1252
1253 void
1254 reapply(const char *arg) {
1255 static Bool zerotags[LENGTH(tags)] = { 0 };
1256 Client *c;
1257
1258 for(c = clients; c; c = c->next) {
1259 memcpy(c->tags, zerotags, sizeof zerotags);
1260 applyrules(c);
1261 }
1262 arrange();
1263 }
1264
1265 void
1266 resize(Client *c, int x, int y, int w, int h, Bool sizehints) {
1267 XWindowChanges wc;
1268 //Monitor scr = monitors[monitorat()];
1269 // c->monitor = monitorat();
1270
1271 if(sizehints) {
1272 /* set minimum possible */
1273 if (w < 1)
1274 w = 1;
1275 if (h < 1)
1276 h = 1;
1277
1278 /* temporarily remove base dimensions */
1279 w -= c->basew;
1280 h -= c->baseh;
1281
1282 /* adjust for aspect limits */
1283 if (c->minay > 0 && c->maxay > 0 && c->minax > 0 && c->maxax > 0) {
1284 if (w * c->maxay > h * c->maxax)
1285 w = h * c->maxax / c->maxay;
1286 else if (w * c->minay < h * c->minax)
1287 h = w * c->minay / c->minax;
1288 }
1289
1290 /* adjust for increment value */
1291 if(c->incw)
1292 w -= w % c->incw;
1293 if(c->inch)
1294 h -= h % c->inch;
1295
1296 /* restore base dimensions */
1297 w += c->basew;
1298 h += c->baseh;
1299
1300 if(c->minw > 0 && w < c->minw)
1301 w = c->minw;
1302 if(c->minh > 0 && h < c->minh)
1303 h = c->minh;
1304 if(c->maxw > 0 && w > c->maxw)
1305 w = c->maxw;
1306 if(c->maxh > 0 && h > c->maxh)
1307 h = c->maxh;
1308 }
1309 if(w <= 0 || h <= 0)
1310 return;
1311 /* TODO: offscreen appearance fixes */
1312 /*
1313 if(x > scr.sw)
1314 x = scr.sw - w - 2 * c->border;
1315 if(y > scr.sh)
1316 y = scr.sh - h - 2 * c->border;
1317 if(x + w + 2 * c->border < scr.sx)
1318 x = scr.sx;
1319 if(y + h + 2 * c->border < scr.sy)
1320 y = scr.sy;
1321 */
1322 if(c->x != x || c->y != y || c->w != w || c->h != h) {
1323 c->x = wc.x = x;
1324 c->y = wc.y = y;
1325 c->w = wc.width = w;
1326 c->h = wc.height = h;
1327 wc.border_width = c->border;
1328 XConfigureWindow(dpy, c->win, CWX | CWY | CWWidth | CWHeight | CWBorderWidth, &wc);
1329 configure(c);
1330 XSync(dpy, False);
1331 }
1332 }
1333
1334 void
1335 resizemouse(Client *c) {
1336 int ocx, ocy;
1337 int nw, nh;
1338 XEvent ev;
1339
1340 ocx = c->x;
1341 ocy = c->y;
1342 if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
1343 None, cursor[CurResize], CurrentTime) != GrabSuccess)
1344 return;
1345 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->border - 1, c->h + c->border - 1);
1346 for(;;) {
1347 XMaskEvent(dpy, MOUSEMASK | ExposureMask | SubstructureRedirectMask , &ev);
1348 switch(ev.type) {
1349 case ButtonRelease:
1350 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0,
1351 c->w + c->border - 1, c->h + c->border - 1);
1352 XUngrabPointer(dpy, CurrentTime);
1353 while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
1354 return;
1355 case ConfigureRequest:
1356 case Expose:
1357 case MapRequest:
1358 handler[ev.type](&ev);
1359 break;
1360 case MotionNotify:
1361 XSync(dpy, False);
1362 if((nw = ev.xmotion.x - ocx - 2 * c->border + 1) <= 0)
1363 nw = 1;
1364 if((nh = ev.xmotion.y - ocy - 2 * c->border + 1) <= 0)
1365 nh = 1;
1366 if((monitors[selmonitor].layout->arrange != floating) && (abs(nw - c->w) > SNAP || abs(nh - c->h) > SNAP))
1367 togglefloating(NULL);
1368 if((monitors[selmonitor].layout->arrange == floating) || c->isfloating)
1369 resize(c, c->x, c->y, nw, nh, True);
1370 break;
1371 }
1372 }
1373 }
1374
1375 void
1376 restack(void) {
1377 unsigned int i;
1378 Client *c;
1379 XEvent ev;
1380 XWindowChanges wc;
1381
1382 drawbar();
1383 if(!sel)
1384 return;
1385 if(sel->isfloating || (monitors[selmonitor].layout->arrange == floating))
1386 XRaiseWindow(dpy, sel->win);
1387 if(monitors[selmonitor].layout->arrange != floating) {
1388 wc.stack_mode = Below;
1389 wc.sibling = monitors[selmonitor].barwin;
1390 if(!sel->isfloating) {
1391 XConfigureWindow(dpy, sel->win, CWSibling | CWStackMode, &wc);
1392 wc.sibling = sel->win;
1393 }
1394 for(i = 0; i < mcount; i++) {
1395 for(c = nexttiled(clients, i); c; c = nexttiled(c->next, i)) {
1396 if(c == sel)
1397 continue;
1398 XConfigureWindow(dpy, c->win, CWSibling | CWStackMode, &wc);
1399 wc.sibling = c->win;
1400 }
1401 }
1402 }
1403 XSync(dpy, False);
1404 while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
1405 }
1406
1407 void
1408 run(void) {
1409 char *p;
1410 char buf[sizeof stext];
1411 fd_set rd;
1412 int r, xfd;
1413 unsigned int len, offset;
1414 XEvent ev;
1415
1416 /* main event loop, also reads status text from stdin */
1417 XSync(dpy, False);
1418 xfd = ConnectionNumber(dpy);
1419 readin = True;
1420 offset = 0;
1421 len = sizeof stext - 1;
1422 buf[len] = stext[len] = '\0'; /* 0-terminator is never touched */
1423 while(running) {
1424 FD_ZERO(&rd);
1425 if(readin)
1426 FD_SET(STDIN_FILENO, &rd);
1427 FD_SET(xfd, &rd);
1428 if(select(xfd + 1, &rd, NULL, NULL, NULL) == -1) {
1429 if(errno == EINTR)
1430 continue;
1431 eprint("select failed\n");
1432 }
1433 if(FD_ISSET(STDIN_FILENO, &rd)) {
1434 switch((r = read(STDIN_FILENO, buf + offset, len - offset))) {
1435 case -1:
1436 strncpy(stext, strerror(errno), len);
1437 readin = False;
1438 break;
1439 case 0:
1440 strncpy(stext, "EOF", 4);
1441 readin = False;
1442 break;
1443 default:
1444 for(p = buf + offset; r > 0; p++, r--, offset++)
1445 if(*p == '\n' || *p == '\0') {
1446 *p = '\0';
1447 strncpy(stext, buf, len);
1448 p += r - 1; /* p is buf + offset + r - 1 */
1449 for(r = 0; *(p - r) && *(p - r) != '\n'; r++);
1450 offset = r;
1451 if(r)
1452 memmove(buf, p - r + 1, r);
1453 break;
1454 }
1455 break;
1456 }
1457 drawbar();
1458 }
1459 while(XPending(dpy)) {
1460 XNextEvent(dpy, &ev);
1461 if(handler[ev.type])
1462 (handler[ev.type])(&ev); /* call handler */
1463 }
1464 }
1465 }
1466
1467 void
1468 scan(void) {
1469 unsigned int i, num;
1470 Window *wins, d1, d2;
1471 XWindowAttributes wa;
1472
1473 wins = NULL;
1474 if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
1475 for(i = 0; i < num; i++) {
1476 if(!XGetWindowAttributes(dpy, wins[i], &wa)
1477 || wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
1478 continue;
1479 if(wa.map_state == IsViewable || getstate(wins[i]) == IconicState)
1480 manage(wins[i], &wa);
1481 }
1482 for(i = 0; i < num; i++) { /* now the transients */
1483 if(!XGetWindowAttributes(dpy, wins[i], &wa))
1484 continue;
1485 if(XGetTransientForHint(dpy, wins[i], &d1)
1486 && (wa.map_state == IsViewable || getstate(wins[i]) == IconicState))
1487 manage(wins[i], &wa);
1488 }
1489 }
1490 if(wins)
1491 XFree(wins);
1492 }
1493
1494 void
1495 setclientstate(Client *c, long state) {
1496 long data[] = {state, None};
1497
1498 XChangeProperty(dpy, c->win, wmatom[WMState], wmatom[WMState], 32,
1499 PropModeReplace, (unsigned char *)data, 2);
1500 }
1501
1502 void
1503 setlayout(const char *arg) {
1504 unsigned int i;
1505 Monitor *m = &monitors[monitorat()];
1506
1507 if(!arg) {
1508 m->layout++;
1509 if(m->layout == &layouts[LENGTH(layouts)])
1510 m->layout = &layouts[0];
1511 }
1512 else {
1513 for(i = 0; i < LENGTH(layouts); i++)
1514 if(!strcmp(arg, layouts[i].symbol))
1515 break;
1516 if(i == LENGTH(layouts))
1517 return;
1518 m->layout = &layouts[i];
1519 }
1520 if(sel)
1521 arrange();
1522 else
1523 drawbar();
1524 }
1525
1526 void
1527 setmwfact(const char *arg) {
1528 double delta;
1529
1530 Monitor *m = &monitors[monitorat()];
1531
1532 if(!domwfact)
1533 return;
1534 /* arg handling, manipulate mwfact */
1535 if(arg == NULL)
1536 m->mwfact = MWFACT;
1537 else if(sscanf(arg, "%lf", &delta) == 1) {
1538 if(arg[0] == '+' || arg[0] == '-')
1539 m->mwfact += delta;
1540 else
1541 m->mwfact = delta;
1542 if(m->mwfact < 0.1)
1543 m->mwfact = 0.1;
1544 else if(m->mwfact > 0.9)
1545 m->mwfact = 0.9;
1546 }
1547 arrange();
1548 }
1549
1550 void
1551 setup(void) {
1552 unsigned int i;
1553 Monitor *m;
1554 XSetWindowAttributes wa;
1555 XineramaScreenInfo *info = NULL;
1556
1557 /* init atoms */
1558 wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
1559 wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
1560 wmatom[WMName] = XInternAtom(dpy, "WM_NAME", False);
1561 wmatom[WMState] = XInternAtom(dpy, "WM_STATE", False);
1562 netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
1563 netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
1564
1565 /* init cursors */
1566 wa.cursor = cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
1567 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
1568 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
1569
1570 // init screens/monitors first
1571 mcount = 1;
1572 if((isxinerama = XineramaIsActive(dpy)))
1573 info = XineramaQueryScreens(dpy, &mcount);
1574 monitors = emallocz(mcount * sizeof(Monitor));
1575
1576 screen = DefaultScreen(dpy);
1577 root = RootWindow(dpy, screen);
1578
1579 /* init appearance */
1580 dc.norm[ColBorder] = getcolor(NORMBORDERCOLOR);
1581 dc.norm[ColBG] = getcolor(NORMBGCOLOR);
1582 dc.norm[ColFG] = getcolor(NORMFGCOLOR);
1583 dc.sel[ColBorder] = getcolor(SELBORDERCOLOR);
1584 dc.sel[ColBG] = getcolor(SELBGCOLOR);
1585 dc.sel[ColFG] = getcolor(SELFGCOLOR);
1586 initfont(FONT);
1587 dc.h = bh = dc.font.height + 2;
1588 dc.drawable = XCreatePixmap(dpy, root, DisplayWidth(dpy, screen), bh, DefaultDepth(dpy, screen));
1589 dc.gc = XCreateGC(dpy, root, 0, 0);
1590 XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
1591 if(!dc.font.set)
1592 XSetFont(dpy, dc.gc, dc.font.xfont->fid);
1593
1594 for(blw = i = 0; i < LENGTH(layouts); i++) {
1595 i = textw(layouts[i].symbol);
1596 if(i > blw)
1597 blw = i;
1598 }
1599 for(i = 0; i < mcount; i++) {
1600 /* init geometry */
1601 m = &monitors[i];
1602
1603 m->monitor = i;
1604
1605 if (mcount != 1 && isxinerama) {
1606 m->sx = info[i].x_org;
1607 m->sy = info[i].y_org;
1608 m->sw = info[i].width;
1609 m->sh = info[i].height;
1610 fprintf(stderr, "monitor[%d]: %d,%d,%d,%d\n", i, m->sx, m->sy, m->sw, m->sh);
1611 }
1612 else {
1613 m->sx = 0;
1614 m->sy = 0;
1615 m->sw = DisplayWidth(dpy, screen);
1616 m->sh = DisplayHeight(dpy, screen);
1617 }
1618
1619 m->seltags = emallocz(sizeof initags);
1620 m->prevtags = emallocz(sizeof initags);
1621
1622 memcpy(m->seltags, initags, sizeof initags);
1623 memcpy(m->prevtags, initags, sizeof initags);
1624
1625 /* init layouts */
1626 m->mwfact = MWFACT;
1627 m->layout = &layouts[0];
1628
1629 // TODO: bpos per screen?
1630 bpos = BARPOS;
1631 wa.override_redirect = 1;
1632 wa.background_pixmap = ParentRelative;
1633 wa.event_mask = ButtonPressMask | ExposureMask;
1634
1635 /* init bars */
1636 m->barwin = XCreateWindow(dpy, root, m->sx, m->sy, m->sw, bh, 0,
1637 DefaultDepth(dpy, screen), CopyFromParent, DefaultVisual(dpy, screen),
1638 CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
1639 XDefineCursor(dpy, m->barwin, cursor[CurNormal]);
1640 updatebarpos(m);
1641 XMapRaised(dpy, m->barwin);
1642 strcpy(stext, "dwm-"VERSION);
1643
1644 /* EWMH support per monitor */
1645 XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
1646 PropModeReplace, (unsigned char *) netatom, NetLast);
1647
1648 /* select for events */
1649 wa.event_mask = SubstructureRedirectMask | SubstructureNotifyMask
1650 | EnterWindowMask | LeaveWindowMask | StructureNotifyMask;
1651 XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);
1652 XSelectInput(dpy, root, wa.event_mask);
1653 }
1654 if(info)
1655 XFree(info);
1656
1657 /* grab keys */
1658 grabkeys();
1659
1660 /* init tags */
1661 compileregs();
1662
1663 selmonitor = monitorat();
1664 fprintf(stderr, "selmonitor == %d\n", selmonitor);
1665 }
1666
1667 void
1668 spawn(const char *arg) {
1669 static char *shell = NULL;
1670
1671 if(!shell && !(shell = getenv("SHELL")))
1672 shell = "/bin/sh";
1673 if(!arg)
1674 return;
1675 /* The double-fork construct avoids zombie processes and keeps the code
1676 * clean from stupid signal handlers. */
1677 if(fork() == 0) {
1678 if(fork() == 0) {
1679 if(dpy)
1680 close(ConnectionNumber(dpy));
1681 setsid();
1682 execl(shell, shell, "-c", arg, (char *)NULL);
1683 fprintf(stderr, "dwm: execl '%s -c %s'", shell, arg);
1684 perror(" failed");
1685 }
1686 exit(0);
1687 }
1688 wait(0);
1689 }
1690
1691 void
1692 tag(const char *arg) {
1693 unsigned int i;
1694
1695 if(!sel)
1696 return;
1697 for(i = 0; i < LENGTH(tags); i++)
1698 sel->tags[i] = (NULL == arg);
1699 sel->tags[idxoftag(arg)] = True;
1700 arrange();
1701 }
1702
1703 unsigned int
1704 textnw(const char *text, unsigned int len) {
1705 XRectangle r;
1706
1707 if(dc.font.set) {
1708 XmbTextExtents(dc.font.set, text, len, NULL, &r);
1709 return r.width;
1710 }
1711 return XTextWidth(dc.font.xfont, text, len);
1712 }
1713
1714 unsigned int
1715 textw(const char *text) {
1716 return textnw(text, strlen(text)) + dc.font.height;
1717 }
1718
1719 void
1720 tile(void) {
1721 unsigned int i, j, n, nx, ny, nw, nh, mw, th;
1722 Client *c, *mc;
1723
1724 domwfact = dozoom = True;
1725
1726 nx = ny = nw = 0; /* gcc stupidity requires this */
1727
1728 for (i = 0; i < mcount; i++) {
1729 Monitor *m = &monitors[i];
1730
1731 for(n = 0, c = nexttiled(clients, i); c; c = nexttiled(c->next, i))
1732 n++;
1733
1734 /* window geoms */
1735 mw = (n == 1) ? m->waw : m->mwfact * m->waw;
1736 th = (n > 1) ? m->wah / (n - 1) : 0;
1737 if(n > 1 && th < bh)
1738 th = m->wah;
1739
1740 for(j = 0, c = mc = nexttiled(clients, i); c; c = nexttiled(c->next, i)) {
1741 if(j == 0) { /* master */
1742 nx = m->wax;
1743 ny = m->way;
1744 nw = mw - 2 * c->border;
1745 nh = m->wah - 2 * c->border;
1746 }
1747 else { /* tile window */
1748 if(j == 1) {
1749 ny = m->way;
1750 nx += mc->w + 2 * mc->border;
1751 nw = m->waw - mw - 2 * c->border;
1752 }
1753 if(j + 1 == n) /* remainder */
1754 nh = (m->way + m->wah) - ny - 2 * c->border;
1755 else
1756 nh = th - 2 * c->border;
1757 }
1758 fprintf(stderr, "tile(%d, %d, %d, %d)\n", nx, ny, nw, nh);
1759 resize(c, nx, ny, nw, nh, RESIZEHINTS);
1760 if((RESIZEHINTS) && ((c->h < bh) || (c->h > nh) || (c->w < bh) || (c->w > nw)))
1761 /* client doesn't accept size constraints */
1762 resize(c, nx, ny, nw, nh, False);
1763 if(n > 1 && th != m->wah)
1764 ny = c->y + c->h + 2 * c->border;
1765
1766 j++;
1767 }
1768 }
1769 fprintf(stderr, "done\n");
1770 }
1771 void
1772 togglebar(const char *arg) {
1773 if(bpos == BarOff)
1774 bpos = (BARPOS == BarOff) ? BarTop : BARPOS;
1775 else
1776 bpos = BarOff;
1777 updatebarpos(&monitors[monitorat()]);
1778 arrange();
1779 }
1780
1781 void
1782 togglefloating(const char *arg) {
1783 if(!sel)
1784 return;
1785 sel->isfloating = !sel->isfloating;
1786 if(sel->isfloating)
1787 resize(sel, sel->x, sel->y, sel->w, sel->h, True);
1788 arrange();
1789 }
1790
1791 void
1792 toggletag(const char *arg) {
1793 unsigned int i, j;
1794
1795 if(!sel)
1796 return;
1797 i = idxoftag(arg);
1798 sel->tags[i] = !sel->tags[i];
1799 for(j = 0; j < LENGTH(tags) && !sel->tags[j]; j++);
1800 if(j == LENGTH(tags))
1801 sel->tags[i] = True; /* at least one tag must be enabled */
1802 arrange();
1803 }
1804
1805 void
1806 toggleview(const char *arg) {
1807 unsigned int i, j;
1808
1809 Monitor *m = &monitors[monitorat()];
1810
1811 i = idxoftag(arg);
1812 m->seltags[i] = !m->seltags[i];
1813 for(j = 0; j < LENGTH(tags) && !m->seltags[j]; j++);
1814 if(j == LENGTH(tags))
1815 m->seltags[i] = True; /* at least one tag must be viewed */
1816 arrange();
1817 }
1818
1819 void
1820 unban(Client *c) {
1821 if(!c->isbanned)
1822 return;
1823 XMoveWindow(dpy, c->win, c->x, c->y);
1824 c->isbanned = False;
1825 }
1826
1827 void
1828 unmanage(Client *c) {
1829 XWindowChanges wc;
1830
1831 wc.border_width = c->oldborder;
1832 /* The server grab construct avoids race conditions. */
1833 XGrabServer(dpy);
1834 XSetErrorHandler(xerrordummy);
1835 XConfigureWindow(dpy, c->win, CWBorderWidth, &wc); /* restore border */
1836 detach(c);
1837 detachstack(c);
1838 if(sel == c)
1839 focus(NULL);
1840 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
1841 setclientstate(c, WithdrawnState);
1842 free(c->tags);
1843 free(c);
1844 XSync(dpy, False);
1845 XSetErrorHandler(xerror);
1846 XUngrabServer(dpy);
1847 arrange();
1848 }
1849
1850 void
1851 unmapnotify(XEvent *e) {
1852 Client *c;
1853 XUnmapEvent *ev = &e->xunmap;
1854
1855 if((c = getclient(ev->window)))
1856 unmanage(c);
1857 }
1858
1859 void
1860 updatebarpos(Monitor *m) {
1861 XEvent ev;
1862
1863 m->wax = m->sx;
1864 m->way = m->sy;
1865 m->wah = m->sh;
1866 m->waw = m->sw;
1867 switch(bpos) {
1868 default:
1869 m->wah -= bh;
1870 m->way += bh;
1871 XMoveWindow(dpy, m->barwin, m->sx, m->sy);
1872 break;
1873 case BarBot:
1874 m->wah -= bh;
1875 XMoveWindow(dpy, m->barwin, m->sx, m->sy + m->wah);
1876 break;
1877 case BarOff:
1878 XMoveWindow(dpy, m->barwin, m->sx, m->sy - bh);
1879 break;
1880 }
1881 XSync(dpy, False);
1882 while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
1883 }
1884
1885 void
1886 updatesizehints(Client *c) {
1887 long msize;
1888 XSizeHints size;
1889
1890 if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
1891 size.flags = PSize;
1892 c->flags = size.flags;
1893 if(c->flags & PBaseSize) {
1894 c->basew = size.base_width;
1895 c->baseh = size.base_height;
1896 }
1897 else if(c->flags & PMinSize) {
1898 c->basew = size.min_width;
1899 c->baseh = size.min_height;
1900 }
1901 else
1902 c->basew = c->baseh = 0;
1903 if(c->flags & PResizeInc) {
1904 c->incw = size.width_inc;
1905 c->inch = size.height_inc;
1906 }
1907 else
1908 c->incw = c->inch = 0;
1909 if(c->flags & PMaxSize) {
1910 c->maxw = size.max_width;
1911 c->maxh = size.max_height;
1912 }
1913 else
1914 c->maxw = c->maxh = 0;
1915 if(c->flags & PMinSize) {
1916 c->minw = size.min_width;
1917 c->minh = size.min_height;
1918 }
1919 else if(c->flags & PBaseSize) {
1920 c->minw = size.base_width;
1921 c->minh = size.base_height;
1922 }
1923 else
1924 c->minw = c->minh = 0;
1925 if(c->flags & PAspect) {
1926 c->minax = size.min_aspect.x;
1927 c->maxax = size.max_aspect.x;
1928 c->minay = size.min_aspect.y;
1929 c->maxay = size.max_aspect.y;
1930 }
1931 else
1932 c->minax = c->maxax = c->minay = c->maxay = 0;
1933 c->isfixed = (c->maxw && c->minw && c->maxh && c->minh
1934 && c->maxw == c->minw && c->maxh == c->minh);
1935 }
1936
1937 void
1938 updatetitle(Client *c) {
1939 if(!gettextprop(c->win, netatom[NetWMName], c->name, sizeof c->name))
1940 gettextprop(c->win, wmatom[WMName], c->name, sizeof c->name);
1941 }
1942
1943 void
1944 updatewmhints(Client *c) {
1945 XWMHints *wmh;
1946
1947 if((wmh = XGetWMHints(dpy, c->win))) {
1948 c->isurgent = (wmh->flags & XUrgencyHint) ? True : False;
1949 XFree(wmh);
1950 }
1951 }
1952
1953 /* There's no way to check accesses to destroyed windows, thus those cases are
1954 * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
1955 * default error handler, which may call exit. */
1956 int
1957 xerror(Display *dpy, XErrorEvent *ee) {
1958 if(ee->error_code == BadWindow
1959 || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
1960 || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
1961 || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
1962 || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
1963 || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
1964 || (ee->request_code == X_GrabKey && ee->error_code == BadAccess)
1965 || (ee->request_code == X_CopyArea && ee->error_code == BadDrawable))
1966 return 0;
1967 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
1968 ee->request_code, ee->error_code);
1969 return xerrorxlib(dpy, ee); /* may call exit */
1970 }
1971
1972 int
1973 xerrordummy(Display *dsply, XErrorEvent *ee) {
1974 return 0;
1975 }
1976
1977 /* Startup Error handler to check if another window manager
1978 * is already running. */
1979 int
1980 xerrorstart(Display *dsply, XErrorEvent *ee) {
1981 otherwm = True;
1982 return -1;
1983 }
1984
1985 void
1986 view(const char *arg) {
1987 unsigned int i;
1988 Bool tmp[LENGTH(tags)];
1989 Monitor *m = &monitors[monitorat()];
1990
1991 for(i = 0; i < LENGTH(tags); i++)
1992 tmp[i] = (NULL == arg);
1993 tmp[idxoftag(arg)] = True;
1994 if(memcmp(m->seltags, tmp, sizeof initags) != 0) {
1995 memcpy(m->prevtags, m->seltags, sizeof initags);
1996 memcpy(m->seltags, tmp, sizeof initags);
1997 arrange();
1998 }
1999 }
2000
2001 void
2002 viewprevtag(const char *arg) {
2003 static Bool tmp[LENGTH(tags)];
2004
2005 Monitor *m = &monitors[monitorat()];
2006
2007 memcpy(tmp, m->seltags, sizeof initags);
2008 memcpy(m->seltags, m->prevtags, sizeof initags);
2009 memcpy(m->prevtags, tmp, sizeof initags);
2010 arrange();
2011 }
2012
2013 void
2014 zoom(const char *arg) {
2015 Client *c;
2016
2017 if(!sel || !dozoom || sel->isfloating)
2018 return;
2019 if((c = sel) == nexttiled(clients, c->monitor))
2020 if(!(c = nexttiled(c->next, c->monitor)))
2021 return;
2022 detach(c);
2023 attach(c);
2024 focus(c);
2025 arrange();
2026 }
2027
2028 void
2029 movetomonitor(const char *arg) {
2030 if (sel) {
2031 sel->monitor = arg ? atoi(arg) : (sel->monitor+1) % mcount;
2032
2033 memcpy(sel->tags, monitors[sel->monitor].seltags, sizeof initags);
2034 resize(sel, monitors[sel->monitor].wax, monitors[sel->monitor].way, sel->w, sel->h, True);
2035 arrange();
2036 }
2037 }
2038
2039 void
2040 selectmonitor(const char *arg) {
2041 Monitor *m = &monitors[arg ? atoi(arg) : (monitorat()+1) % mcount];
2042
2043 XWarpPointer(dpy, None, root, 0, 0, 0, 0, m->wax+m->waw/2, m->way+m->wah/2);
2044 focus(NULL);
2045 }
2046
2047
2048 int
2049 main(int argc, char *argv[]) {
2050 if(argc == 2 && !strcmp("-v", argv[1]))
2051 eprint("dwm-"VERSION", © 2006-2007 Anselm R. Garbe, Sander van Dijk, "
2052 "Jukka Salmi, Premysl Hruby, Szabolcs Nagy, Christof Musik\n");
2053 else if(argc != 1)
2054 eprint("usage: dwm [-v]\n");
2055
2056 setlocale(LC_CTYPE, "");
2057 if(!(dpy = XOpenDisplay(0)))
2058 eprint("dwm: cannot open display\n");
2059
2060 checkotherwm();
2061 setup();
2062 drawbar();
2063 scan();
2064 run();
2065 cleanup();
2066
2067 XCloseDisplay(dpy);
2068 return 0;
2069 }