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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, 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 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], Bool invert);
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 isurgent(int monitor, unsigned int t);
170 Bool isvisible(Client *c, int monitor);
171 void keypress(XEvent *e);
172 void killclient(const char *arg);
173 void manage(Window w, XWindowAttributes *wa);
174 void mappingnotify(XEvent *e);
175 void maprequest(XEvent *e);
176 void movemouse(Client *c);
177 Client *nexttiled(Client *c, int monitor);
178 void propertynotify(XEvent *e);
179 void quit(const char *arg);
180 void reapply(const char *arg);
181 void resize(Client *c, int x, int y, int w, int h, Bool sizehints);
182 void resizemouse(Client *c);
183 void restack(void);
184 void run(void);
185 void scan(void);
186 void setclientstate(Client *c, long state);
187 void setlayout(const char *arg);
188 void setmwfact(const char *arg);
189 void setup(void);
190 void spawn(const char *arg);
191 void tag(const char *arg);
192 unsigned int textnw(Monitor*, const char *text, unsigned int len);
193 unsigned int textw(Monitor*, const char *text);
194 void tile(void);
195 void togglebar(const char *arg);
196 void togglefloating(const char *arg);
197 void toggletag(const char *arg);
198 void toggleview(const char *arg);
199 void unban(Client *c);
200 void unmanage(Client *c);
201 void unmapnotify(XEvent *e);
202 void updatebarpos(Monitor *m);
203 void updatesizehints(Client *c);
204 void updatetitle(Client *c);
205 void updatewmhints(Client *c);
206 void view(const char *arg);
207 void viewprevtag(const char *arg); /* views previous selected tags */
208 int xerror(Display *dpy, XErrorEvent *ee);
209 int xerrordummy(Display *dsply, XErrorEvent *ee);
210 int xerrorstart(Display *dsply, XErrorEvent *ee);
211 void zoom(const char *arg);
212 int monitorat(void);
213 void movetomonitor(const char *arg);
214 void selectmonitor(const char *arg);
215
216 /* variables */
217 char stext[256];
218 int mcount = 1;
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 int selmonitor = 0;
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(m, 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 if((m->layout->arrange == floating) || c->isfloating)
372 restack();
373 else
374 togglefloating(NULL);
375 movemouse(c);
376 }
377 else if(ev->button == Button2) {
378 if((floating != m->layout->arrange) && c->isfloating)
379 togglefloating(NULL);
380 else
381 zoom(NULL);
382 }
383 else if(ev->button == Button3 && !c->isfixed) {
384 if((floating == m->layout->arrange) || c->isfloating)
385 restack();
386 else
387 togglefloating(NULL);
388 resizemouse(c);
389 }
390 }
391 }
392
393 void
394 checkotherwm(void) {
395 otherwm = False;
396 XSetErrorHandler(xerrorstart);
397
398 /* this causes an error if some other window manager is running */
399 XSelectInput(dpy, DefaultRootWindow(dpy), SubstructureRedirectMask);
400 XSync(dpy, False);
401 if(otherwm)
402 eprint("dwm: another window manager is already running\n");
403 XSync(dpy, False);
404 XSetErrorHandler(NULL);
405 xerrorxlib = XSetErrorHandler(xerror);
406 XSync(dpy, False);
407 }
408
409 void
410 cleanup(void) {
411 unsigned int i;
412 close(STDIN_FILENO);
413 while(stack) {
414 unban(stack);
415 unmanage(stack);
416 }
417 for(i = 0; i < mcount; i++) {
418 Monitor *m = &monitors[i];
419 if(m->dc.font.set)
420 XFreeFontSet(dpy, m->dc.font.set);
421 else
422 XFreeFont(dpy, m->dc.font.xfont);
423 XUngrabKey(dpy, AnyKey, AnyModifier, m->root);
424 XFreePixmap(dpy, m->dc.drawable);
425 XFreeGC(dpy, m->dc.gc);
426 XDestroyWindow(dpy, m->barwin);
427 XFreeCursor(dpy, cursor[CurNormal]);
428 XFreeCursor(dpy, cursor[CurResize]);
429 XFreeCursor(dpy, cursor[CurMove]);
430 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
431 XSync(dpy, False);
432 }
433 }
434
435 void
436 compileregs(void) {
437 unsigned int i;
438 regex_t *reg;
439
440 if(regs)
441 return;
442 regs = emallocz(LENGTH(rules) * sizeof(Regs));
443 for(i = 0; i < LENGTH(rules); i++) {
444 if(rules[i].prop) {
445 reg = emallocz(sizeof(regex_t));
446 if(regcomp(reg, rules[i].prop, REG_EXTENDED))
447 free(reg);
448 else
449 regs[i].propregex = reg;
450 }
451 if(rules[i].tags) {
452 reg = emallocz(sizeof(regex_t));
453 if(regcomp(reg, rules[i].tags, REG_EXTENDED))
454 free(reg);
455 else
456 regs[i].tagregex = reg;
457 }
458 }
459 }
460
461 void
462 configure(Client *c) {
463 XConfigureEvent ce;
464
465 ce.type = ConfigureNotify;
466 ce.display = dpy;
467 ce.event = c->win;
468 ce.window = c->win;
469 ce.x = c->x;
470 ce.y = c->y;
471 ce.width = c->w;
472 ce.height = c->h;
473 ce.border_width = c->border;
474 ce.above = None;
475 ce.override_redirect = False;
476 XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&ce);
477 }
478
479 void
480 configurenotify(XEvent *e) {
481 XConfigureEvent *ev = &e->xconfigure;
482 Monitor *m = &monitors[selmonitor];
483
484 if(ev->window == m->root && (ev->width != m->sw || ev->height != m->sh)) {
485 m->sw = ev->width;
486 m->sh = ev->height;
487 XFreePixmap(dpy, dc.drawable);
488 dc.drawable = XCreatePixmap(dpy, m->root, m->sw, bh, DefaultDepth(dpy, m->screen));
489 XResizeWindow(dpy, m->barwin, m->sw, bh);
490 updatebarpos(m);
491 arrange();
492 }
493 }
494
495 void
496 configurerequest(XEvent *e) {
497 Client *c;
498 XConfigureRequestEvent *ev = &e->xconfigurerequest;
499 XWindowChanges wc;
500
501 if((c = getclient(ev->window))) {
502 Monitor *m = &monitors[c->monitor];
503 if(ev->value_mask & CWBorderWidth)
504 c->border = ev->border_width;
505 if(c->isfixed || c->isfloating || (floating == m->layout->arrange)) {
506 if(ev->value_mask & CWX)
507 c->x = m->sx+ev->x;
508 if(ev->value_mask & CWY)
509 c->y = m->sy+ev->y;
510 if(ev->value_mask & CWWidth)
511 c->w = ev->width;
512 if(ev->value_mask & CWHeight)
513 c->h = ev->height;
514 if((c->x - m->sx + c->w) > m->sw && c->isfloating)
515 c->x = m->sx + (m->sw / 2 - c->w / 2); /* center in x direction */
516 if((c->y - m->sy + c->h) > m->sh && c->isfloating)
517 c->y = m->sy + (m->sh / 2 - c->h / 2); /* center in y direction */
518 if((ev->value_mask & (CWX | CWY))
519 && !(ev->value_mask & (CWWidth | CWHeight)))
520 configure(c);
521 if(isvisible(c, monitorat()))
522 XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
523 }
524 else
525 configure(c);
526 }
527 else {
528 wc.x = ev->x;
529 wc.y = ev->y;
530 wc.width = ev->width;
531 wc.height = ev->height;
532 wc.border_width = ev->border_width;
533 wc.sibling = ev->above;
534 wc.stack_mode = ev->detail;
535 XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
536 }
537 XSync(dpy, False);
538 }
539
540 void
541 destroynotify(XEvent *e) {
542 Client *c;
543 XDestroyWindowEvent *ev = &e->xdestroywindow;
544
545 if((c = getclient(ev->window)))
546 unmanage(c);
547 }
548
549 void
550 detach(Client *c) {
551 if(c->prev)
552 c->prev->next = c->next;
553 if(c->next)
554 c->next->prev = c->prev;
555 if(c == clients)
556 clients = c->next;
557 c->next = c->prev = NULL;
558 }
559
560 void
561 detachstack(Client *c) {
562 Client **tc;
563
564 for(tc=&stack; *tc && *tc != c; tc=&(*tc)->snext);
565 *tc = c->snext;
566 }
567
568 void
569 drawbar(void) {
570 int i, j, x;
571
572 for(i = 0; i < mcount; i++) {
573 Monitor *m = &monitors[i];
574 m->dc.x = 0;
575 for(j = 0; j < LENGTH(tags); j++) {
576 m->dc.w = textw(m, tags[j]);
577 if(m->seltags[j]) {
578 drawtext(m, tags[j], m->dc.sel, isurgent(i, j));
579 drawsquare(m, sel && sel->tags[j] && sel->monitor == selmonitor, isoccupied(m, j), m->dc.sel);
580 }
581 else {
582 drawtext(m, tags[j], m->dc.norm, isurgent(i, j));
583 drawsquare(m, sel && sel->tags[j] && sel->monitor == selmonitor, isoccupied(m, j), m->dc.norm);
584 }
585 m->dc.x += m->dc.w;
586 }
587 m->dc.w = blw;
588 drawtext(m, m->layout->symbol, m->dc.norm, False);
589 x = m->dc.x + m->dc.w;
590 m->dc.w = textw(m, stext);
591 m->dc.x = m->sw - m->dc.w;
592 if(m->dc.x < x) {
593 m->dc.x = x;
594 m->dc.w = m->sw - x;
595 }
596 drawtext(m, stext, m->dc.norm, False);
597 if((m->dc.w = m->dc.x - x) > bh) {
598 m->dc.x = x;
599 if(sel && sel->monitor == selmonitor) {
600 drawtext(m, sel->name, m->dc.sel, False);
601 drawsquare(m, False, sel->isfloating, m->dc.sel);
602 }
603 else
604 drawtext(m, NULL, m->dc.norm, False);
605 }
606 XCopyArea(dpy, m->dc.drawable, m->barwin, m->dc.gc, 0, 0, m->sw, bh, 0, 0);
607 XSync(dpy, False);
608 }
609 }
610
611 void
612 drawsquare(Monitor *m, Bool filled, Bool empty, unsigned long col[ColLast]) {
613 int x;
614 XGCValues gcv;
615 XRectangle r = { m->dc.x, m->dc.y, m->dc.w, m->dc.h };
616
617 gcv.foreground = col[ColFG];
618 XChangeGC(dpy, m->dc.gc, GCForeground, &gcv);
619 x = (m->dc.font.ascent + m->dc.font.descent + 2) / 4;
620 r.x = m->dc.x + 1;
621 r.y = m->dc.y + 1;
622 if(filled) {
623 r.width = r.height = x + 1;
624 XFillRectangles(dpy, m->dc.drawable, m->dc.gc, &r, 1);
625 }
626 else if(empty) {
627 r.width = r.height = x;
628 XDrawRectangles(dpy, m->dc.drawable, m->dc.gc, &r, 1);
629 }
630 }
631
632 void
633 drawtext(Monitor *m, const char *text, unsigned long col[ColLast], Bool invert) {
634 int x, y, w, h;
635 static char buf[256];
636 unsigned int len, olen;
637 XRectangle r = { m->dc.x, m->dc.y, m->dc.w, m->dc.h };
638
639 XSetForeground(dpy, m->dc.gc, col[invert ? ColFG : ColBG]);
640 XFillRectangles(dpy, m->dc.drawable, m->dc.gc, &r, 1);
641 if(!text)
642 return;
643 w = 0;
644 olen = len = strlen(text);
645 if(len >= sizeof buf)
646 len = sizeof buf - 1;
647 memcpy(buf, text, len);
648 buf[len] = 0;
649 h = m->dc.font.ascent + m->dc.font.descent;
650 y = m->dc.y + (m->dc.h / 2) - (h / 2) + m->dc.font.ascent;
651 x = m->dc.x + (h / 2);
652 /* shorten text if necessary */
653 while(len && (w = textnw(m, buf, len)) > m->dc.w - h)
654 buf[--len] = 0;
655 if(len < olen) {
656 if(len > 1)
657 buf[len - 1] = '.';
658 if(len > 2)
659 buf[len - 2] = '.';
660 if(len > 3)
661 buf[len - 3] = '.';
662 }
663 if(w > m->dc.w)
664 return; /* too long */
665 XSetForeground(dpy, m->dc.gc, col[invert ? ColBG : ColFG]);
666 if(m->dc.font.set)
667 XmbDrawString(dpy, m->dc.drawable, m->dc.font.set, m->dc.gc, x, y, buf, len);
668 else
669 XDrawString(dpy, m->dc.drawable, m->dc.gc, x, y, buf, len);
670 }
671
672 void *
673 emallocz(unsigned int size) {
674 void *res = calloc(1, size);
675
676 if(!res)
677 eprint("fatal: could not malloc() %u bytes\n", size);
678 return res;
679 }
680
681 void
682 enternotify(XEvent *e) {
683 Client *c;
684 XCrossingEvent *ev = &e->xcrossing;
685
686 if(ev->mode != NotifyNormal || ev->detail == NotifyInferior);
687 //return;
688 if((c = getclient(ev->window)))
689 focus(c);
690 else {
691 selmonitor = monitorat();
692 fprintf(stderr, "updating selmonitor %d\n", selmonitor);
693 focus(NULL);
694 }
695 }
696
697 void
698 eprint(const char *errstr, ...) {
699 va_list ap;
700
701 va_start(ap, errstr);
702 vfprintf(stderr, errstr, ap);
703 va_end(ap);
704 exit(EXIT_FAILURE);
705 }
706
707 void
708 expose(XEvent *e) {
709 XExposeEvent *ev = &e->xexpose;
710
711 if(ev->count == 0) {
712 if(ev->window == monitors[selmonitor].barwin)
713 drawbar();
714 }
715 }
716
717 void
718 floating(void) { /* default floating layout */
719 Client *c;
720
721 domwfact = dozoom = False;
722 for(c = clients; c; c = c->next)
723 if(isvisible(c, selmonitor))
724 resize(c, c->x, c->y, c->w, c->h, True);
725 }
726
727 void
728 focus(Client *c) {
729 Monitor *m;
730
731 if(c)
732 selmonitor = c->monitor;
733 m = &monitors[selmonitor];
734 if(!c || (c && !isvisible(c, selmonitor)))
735 for(c = stack; c && !isvisible(c, c->monitor); c = c->snext);
736 if(sel && sel != c) {
737 grabbuttons(sel, False);
738 XSetWindowBorder(dpy, sel->win, monitors[sel->monitor].dc.norm[ColBorder]);
739 }
740 if(c) {
741 detachstack(c);
742 attachstack(c);
743 grabbuttons(c, True);
744 }
745 sel = c;
746 drawbar();
747 if(c) {
748 XSetWindowBorder(dpy, c->win, m->dc.sel[ColBorder]);
749 XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
750 selmonitor = c->monitor;
751 }
752 else {
753 XSetInputFocus(dpy, m->root, RevertToPointerRoot, CurrentTime);
754 }
755 }
756
757 void
758 focusin(XEvent *e) { /* there are some broken focus acquiring clients */
759 XFocusChangeEvent *ev = &e->xfocus;
760
761 if(sel && ev->window != sel->win)
762 XSetInputFocus(dpy, sel->win, RevertToPointerRoot, CurrentTime);
763 }
764
765 void
766 focusnext(const char *arg) {
767 Client *c;
768
769 if(!sel)
770 return;
771 for(c = sel->next; c && !isvisible(c, selmonitor); c = c->next);
772 if(!c)
773 for(c = clients; c && !isvisible(c, selmonitor); c = c->next);
774 if(c) {
775 focus(c);
776 restack();
777 }
778 }
779
780 void
781 focusprev(const char *arg) {
782 Client *c;
783
784 if(!sel)
785 return;
786 for(c = sel->prev; c && !isvisible(c, selmonitor); c = c->prev);
787 if(!c) {
788 for(c = clients; c && c->next; c = c->next);
789 for(; c && !isvisible(c, selmonitor); c = c->prev);
790 }
791 if(c) {
792 focus(c);
793 restack();
794 }
795 }
796
797 Client *
798 getclient(Window w) {
799 Client *c;
800
801 for(c = clients; c && c->win != w; c = c->next);
802 return c;
803 }
804
805 unsigned long
806 getcolor(const char *colstr, int screen) {
807 Colormap cmap = DefaultColormap(dpy, screen);
808 XColor color;
809
810 if(!XAllocNamedColor(dpy, cmap, colstr, &color, &color))
811 eprint("error, cannot allocate color '%s'\n", colstr);
812 return color.pixel;
813 }
814
815 long
816 getstate(Window w) {
817 int format, status;
818 long result = -1;
819 unsigned char *p = NULL;
820 unsigned long n, extra;
821 Atom real;
822
823 status = XGetWindowProperty(dpy, w, wmatom[WMState], 0L, 2L, False, wmatom[WMState],
824 &real, &format, &n, &extra, (unsigned char **)&p);
825 if(status != Success)
826 return -1;
827 if(n != 0)
828 result = *p;
829 XFree(p);
830 return result;
831 }
832
833 Bool
834 gettextprop(Window w, Atom atom, char *text, unsigned int size) {
835 char **list = NULL;
836 int n;
837 XTextProperty name;
838
839 if(!text || size == 0)
840 return False;
841 text[0] = '\0';
842 XGetTextProperty(dpy, w, &name, atom);
843 if(!name.nitems)
844 return False;
845 if(name.encoding == XA_STRING)
846 strncpy(text, (char *)name.value, size - 1);
847 else {
848 if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
849 && n > 0 && *list) {
850 strncpy(text, *list, size - 1);
851 XFreeStringList(list);
852 }
853 }
854 text[size - 1] = '\0';
855 XFree(name.value);
856 return True;
857 }
858
859 void
860 grabbuttons(Client *c, Bool focused) {
861 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
862
863 if(focused) {
864 XGrabButton(dpy, Button1, MODKEY, c->win, False, BUTTONMASK,
865 GrabModeAsync, GrabModeSync, None, None);
866 XGrabButton(dpy, Button1, MODKEY | LockMask, c->win, False, BUTTONMASK,
867 GrabModeAsync, GrabModeSync, None, None);
868 XGrabButton(dpy, Button1, MODKEY | numlockmask, c->win, False, BUTTONMASK,
869 GrabModeAsync, GrabModeSync, None, None);
870 XGrabButton(dpy, Button1, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
871 GrabModeAsync, GrabModeSync, None, None);
872
873 XGrabButton(dpy, Button2, MODKEY, c->win, False, BUTTONMASK,
874 GrabModeAsync, GrabModeSync, None, None);
875 XGrabButton(dpy, Button2, MODKEY | LockMask, c->win, False, BUTTONMASK,
876 GrabModeAsync, GrabModeSync, None, None);
877 XGrabButton(dpy, Button2, MODKEY | numlockmask, c->win, False, BUTTONMASK,
878 GrabModeAsync, GrabModeSync, None, None);
879 XGrabButton(dpy, Button2, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
880 GrabModeAsync, GrabModeSync, None, None);
881
882 XGrabButton(dpy, Button3, MODKEY, c->win, False, BUTTONMASK,
883 GrabModeAsync, GrabModeSync, None, None);
884 XGrabButton(dpy, Button3, MODKEY | LockMask, c->win, False, BUTTONMASK,
885 GrabModeAsync, GrabModeSync, None, None);
886 XGrabButton(dpy, Button3, MODKEY | numlockmask, c->win, False, BUTTONMASK,
887 GrabModeAsync, GrabModeSync, None, None);
888 XGrabButton(dpy, Button3, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
889 GrabModeAsync, GrabModeSync, None, None);
890 }
891 else
892 XGrabButton(dpy, AnyButton, AnyModifier, c->win, False, BUTTONMASK,
893 GrabModeAsync, GrabModeSync, None, None);
894 }
895
896 void
897 grabkeys(void) {
898 unsigned int i, j;
899 KeyCode code;
900 XModifierKeymap *modmap;
901
902 /* init modifier map */
903 modmap = XGetModifierMapping(dpy);
904 for(i = 0; i < 8; i++)
905 for(j = 0; j < modmap->max_keypermod; j++) {
906 if(modmap->modifiermap[i * modmap->max_keypermod + j] == XKeysymToKeycode(dpy, XK_Num_Lock))
907 numlockmask = (1 << i);
908 }
909 XFreeModifiermap(modmap);
910
911 for(i = 0; i < mcount; i++) {
912 Monitor *m = &monitors[i];
913 XUngrabKey(dpy, AnyKey, AnyModifier, m->root);
914 for(j = 0; j < LENGTH(keys); j++) {
915 code = XKeysymToKeycode(dpy, keys[j].keysym);
916 XGrabKey(dpy, code, keys[j].mod, m->root, True,
917 GrabModeAsync, GrabModeAsync);
918 XGrabKey(dpy, code, keys[j].mod | LockMask, m->root, True,
919 GrabModeAsync, GrabModeAsync);
920 XGrabKey(dpy, code, keys[j].mod | numlockmask, m->root, True,
921 GrabModeAsync, GrabModeAsync);
922 XGrabKey(dpy, code, keys[j].mod | numlockmask | LockMask, m->root, True,
923 GrabModeAsync, GrabModeAsync);
924 }
925 }
926 }
927
928 unsigned int
929 idxoftag(const char *tag) {
930 unsigned int i;
931
932 for(i = 0; (i < LENGTH(tags)) && (tags[i] != tag); i++);
933 return (i < LENGTH(tags)) ? i : 0;
934 }
935
936 void
937 initfont(Monitor *m, const char *fontstr) {
938 char *def, **missing;
939 int i, n;
940
941 missing = NULL;
942 if(m->dc.font.set)
943 XFreeFontSet(dpy, m->dc.font.set);
944 m->dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
945 if(missing) {
946 while(n--)
947 fprintf(stderr, "dwm: missing fontset: %s\n", missing[n]);
948 XFreeStringList(missing);
949 }
950 if(m->dc.font.set) {
951 XFontSetExtents *font_extents;
952 XFontStruct **xfonts;
953 char **font_names;
954 m->dc.font.ascent = m->dc.font.descent = 0;
955 font_extents = XExtentsOfFontSet(m->dc.font.set);
956 n = XFontsOfFontSet(m->dc.font.set, &xfonts, &font_names);
957 for(i = 0, m->dc.font.ascent = 0, m->dc.font.descent = 0; i < n; i++) {
958 if(m->dc.font.ascent < (*xfonts)->ascent)
959 m->dc.font.ascent = (*xfonts)->ascent;
960 if(m->dc.font.descent < (*xfonts)->descent)
961 m->dc.font.descent = (*xfonts)->descent;
962 xfonts++;
963 }
964 }
965 else {
966 if(m->dc.font.xfont)
967 XFreeFont(dpy, m->dc.font.xfont);
968 m->dc.font.xfont = NULL;
969 if(!(m->dc.font.xfont = XLoadQueryFont(dpy, fontstr))
970 && !(m->dc.font.xfont = XLoadQueryFont(dpy, "fixed")))
971 eprint("error, cannot load font: '%s'\n", fontstr);
972 m->dc.font.ascent = m->dc.font.xfont->ascent;
973 m->dc.font.descent = m->dc.font.xfont->descent;
974 }
975 m->dc.font.height = m->dc.font.ascent + m->dc.font.descent;
976 }
977
978 Bool
979 isoccupied(Monitor *m, unsigned int t) {
980 Client *c;
981
982 for(c = clients; c; c = c->next)
983 if(c->tags[t] && c->monitor == selmonitor)
984 return True;
985 return False;
986 }
987
988 Bool
989 isprotodel(Client *c) {
990 int i, n;
991 Atom *protocols;
992 Bool ret = False;
993
994 if(XGetWMProtocols(dpy, c->win, &protocols, &n)) {
995 for(i = 0; !ret && i < n; i++)
996 if(protocols[i] == wmatom[WMDelete])
997 ret = True;
998 XFree(protocols);
999 }
1000 return ret;
1001 }
1002
1003 Bool
1004 isurgent(int monitor, unsigned int t) {
1005 Client *c;
1006
1007 for(c = clients; c; c = c->next)
1008 if(c->monitor == monitor && c->isurgent && c->tags[t])
1009 return True;
1010 return False;
1011 }
1012
1013 Bool
1014 isvisible(Client *c, int monitor) {
1015 unsigned int i;
1016
1017 for(i = 0; i < LENGTH(tags); i++)
1018 if(c->tags[i] && monitors[c->monitor].seltags[i] && c->monitor == monitor)
1019 return True;
1020 return False;
1021 }
1022
1023 void
1024 keypress(XEvent *e) {
1025 unsigned int i;
1026 KeySym keysym;
1027 XKeyEvent *ev;
1028
1029 ev = &e->xkey;
1030 keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
1031 for(i = 0; i < LENGTH(keys); i++)
1032 if(keysym == keys[i].keysym
1033 && CLEANMASK(keys[i].mod) == CLEANMASK(ev->state))
1034 {
1035 if(keys[i].func)
1036 keys[i].func(keys[i].arg);
1037 }
1038 }
1039
1040 void
1041 killclient(const char *arg) {
1042 XEvent ev;
1043
1044 if(!sel)
1045 return;
1046 if(isprotodel(sel)) {
1047 ev.type = ClientMessage;
1048 ev.xclient.window = sel->win;
1049 ev.xclient.message_type = wmatom[WMProtocols];
1050 ev.xclient.format = 32;
1051 ev.xclient.data.l[0] = wmatom[WMDelete];
1052 ev.xclient.data.l[1] = CurrentTime;
1053 XSendEvent(dpy, sel->win, False, NoEventMask, &ev);
1054 }
1055 else
1056 XKillClient(dpy, sel->win);
1057 }
1058
1059 void
1060 manage(Window w, XWindowAttributes *wa) {
1061 Client *c, *t = NULL;
1062 Monitor *m;
1063 Status rettrans;
1064 Window trans;
1065 XWindowChanges wc;
1066
1067 c = emallocz(sizeof(Client));
1068 c->tags = emallocz(sizeof initags);
1069 c->win = w;
1070
1071 applyrules(c);
1072
1073 m = &monitors[c->monitor];
1074
1075 c->x = wa->x + m->sx;
1076 c->y = wa->y + m->sy;
1077 c->w = wa->width;
1078 c->h = wa->height;
1079 c->oldborder = wa->border_width;
1080
1081 if(c->w == m->sw && c->h == m->sh) {
1082 c->x = m->sx;
1083 c->y = m->sy;
1084 c->border = wa->border_width;
1085 }
1086 else {
1087 if(c->x + c->w + 2 * c->border > m->wax + m->waw)
1088 c->x = m->wax + m->waw - c->w - 2 * c->border;
1089 if(c->y + c->h + 2 * c->border > m->way + m->wah)
1090 c->y = m->way + m->wah - c->h - 2 * c->border;
1091 if(c->x < m->wax)
1092 c->x = m->wax;
1093 if(c->y < m->way)
1094 c->y = m->way;
1095 c->border = BORDERPX;
1096 }
1097 wc.border_width = c->border;
1098 XConfigureWindow(dpy, w, CWBorderWidth, &wc);
1099 XSetWindowBorder(dpy, w, m->dc.norm[ColBorder]);
1100 configure(c); /* propagates border_width, if size doesn't change */
1101 updatesizehints(c);
1102 XSelectInput(dpy, w, EnterWindowMask | FocusChangeMask | PropertyChangeMask | StructureNotifyMask);
1103 grabbuttons(c, False);
1104 updatetitle(c);
1105 if((rettrans = XGetTransientForHint(dpy, w, &trans) == Success))
1106 for(t = clients; t && t->win != trans; t = t->next);
1107 if(t)
1108 memcpy(c->tags, t->tags, sizeof initags);
1109 if(!c->isfloating)
1110 c->isfloating = (rettrans == Success) || c->isfixed;
1111 attach(c);
1112 attachstack(c);
1113 XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h); /* some windows require this */
1114 ban(c);
1115 XMapWindow(dpy, c->win);
1116 setclientstate(c, NormalState);
1117 arrange();
1118 }
1119
1120 void
1121 mappingnotify(XEvent *e) {
1122 XMappingEvent *ev = &e->xmapping;
1123
1124 XRefreshKeyboardMapping(ev);
1125 if(ev->request == MappingKeyboard)
1126 grabkeys();
1127 }
1128
1129 void
1130 maprequest(XEvent *e) {
1131 static XWindowAttributes wa;
1132 XMapRequestEvent *ev = &e->xmaprequest;
1133
1134 if(!XGetWindowAttributes(dpy, ev->window, &wa))
1135 return;
1136 if(wa.override_redirect)
1137 return;
1138 if(!getclient(ev->window))
1139 manage(ev->window, &wa);
1140 }
1141
1142 int
1143 monitorat() {
1144 int i, x, y;
1145 Window win;
1146 unsigned int mask;
1147
1148 XQueryPointer(dpy, monitors[selmonitor].root, &win, &win, &x, &y, &i, &i, &mask);
1149 for(i = 0; i < mcount; i++) {
1150 fprintf(stderr, "checking monitor[%d]: %d %d %d %d\n", i, monitors[i].sx, monitors[i].sy, monitors[i].sw, monitors[i].sh);
1151 if((x >= monitors[i].sx && x < monitors[i].sx + monitors[i].sw)
1152 && (y >= monitors[i].sy && y < monitors[i].sy + monitors[i].sh)) {
1153 fprintf(stderr, "%d,%d -> %d\n", x, y, i);
1154 return i;
1155 }
1156 }
1157 fprintf(stderr, "?,? -> 0\n");
1158 return 0;
1159 }
1160
1161 void
1162 movemouse(Client *c) {
1163 int x1, y1, ocx, ocy, di, nx, ny;
1164 unsigned int dui;
1165 Window dummy;
1166 XEvent ev;
1167
1168 ocx = nx = c->x;
1169 ocy = ny = c->y;
1170 if(XGrabPointer(dpy, monitors[selmonitor].root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
1171 None, cursor[CurMove], CurrentTime) != GrabSuccess)
1172 return;
1173 XQueryPointer(dpy, monitors[selmonitor].root, &dummy, &dummy, &x1, &y1, &di, &di, &dui);
1174 for(;;) {
1175 XMaskEvent(dpy, MOUSEMASK | ExposureMask | SubstructureRedirectMask, &ev);
1176 switch (ev.type) {
1177 case ButtonRelease:
1178 XUngrabPointer(dpy, CurrentTime);
1179 return;
1180 case ConfigureRequest:
1181 case Expose:
1182 case MapRequest:
1183 handler[ev.type](&ev);
1184 break;
1185 case MotionNotify:
1186 XSync(dpy, False);
1187 nx = ocx + (ev.xmotion.x - x1);
1188 ny = ocy + (ev.xmotion.y - y1);
1189 Monitor *m = &monitors[monitorat()];
1190 if(abs(m->wax - nx) < SNAP)
1191 nx = m->wax;
1192 else if(abs((m->wax + m->waw) - (nx + c->w + 2 * c->border)) < SNAP)
1193 nx = m->wax + m->waw - c->w - 2 * c->border;
1194 if(abs(m->way - ny) < SNAP)
1195 ny = m->way;
1196 else if(abs((m->way + m->wah) - (ny + c->h + 2 * c->border)) < SNAP)
1197 ny = m->way + m->wah - c->h - 2 * c->border;
1198 resize(c, nx, ny, c->w, c->h, False);
1199 memcpy(c->tags, monitors[monitorat()].seltags, sizeof initags);
1200 break;
1201 }
1202 }
1203 }
1204
1205 Client *
1206 nexttiled(Client *c, int monitor) {
1207 for(; c && (c->isfloating || !isvisible(c, monitor)); c = c->next);
1208 return c;
1209 }
1210
1211 void
1212 propertynotify(XEvent *e) {
1213 Client *c;
1214 Window trans;
1215 XPropertyEvent *ev = &e->xproperty;
1216
1217 if(ev->state == PropertyDelete)
1218 return; /* ignore */
1219 if((c = getclient(ev->window))) {
1220 switch (ev->atom) {
1221 default: break;
1222 case XA_WM_TRANSIENT_FOR:
1223 XGetTransientForHint(dpy, c->win, &trans);
1224 if(!c->isfloating && (c->isfloating = (getclient(trans) != NULL)))
1225 arrange();
1226 break;
1227 case XA_WM_NORMAL_HINTS:
1228 updatesizehints(c);
1229 break;
1230 case XA_WM_HINTS:
1231 updatewmhints(c);
1232 drawbar();
1233 break;
1234 }
1235 if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
1236 updatetitle(c);
1237 if(c == sel)
1238 drawbar();
1239 }
1240 }
1241 }
1242
1243 void
1244 quit(const char *arg) {
1245 readin = running = False;
1246 }
1247
1248 void
1249 reapply(const char *arg) {
1250 static Bool zerotags[LENGTH(tags)] = { 0 };
1251 Client *c;
1252
1253 for(c = clients; c; c = c->next) {
1254 memcpy(c->tags, zerotags, sizeof zerotags);
1255 applyrules(c);
1256 }
1257 arrange();
1258 }
1259
1260 void
1261 resize(Client *c, int x, int y, int w, int h, Bool sizehints) {
1262 XWindowChanges wc;
1263 //Monitor scr = monitors[monitorat()];
1264 // c->monitor = monitorat();
1265
1266 if(sizehints) {
1267 /* set minimum possible */
1268 if (w < 1)
1269 w = 1;
1270 if (h < 1)
1271 h = 1;
1272
1273 /* temporarily remove base dimensions */
1274 w -= c->basew;
1275 h -= c->baseh;
1276
1277 /* adjust for aspect limits */
1278 if (c->minay > 0 && c->maxay > 0 && c->minax > 0 && c->maxax > 0) {
1279 if (w * c->maxay > h * c->maxax)
1280 w = h * c->maxax / c->maxay;
1281 else if (w * c->minay < h * c->minax)
1282 h = w * c->minay / c->minax;
1283 }
1284
1285 /* adjust for increment value */
1286 if(c->incw)
1287 w -= w % c->incw;
1288 if(c->inch)
1289 h -= h % c->inch;
1290
1291 /* restore base dimensions */
1292 w += c->basew;
1293 h += c->baseh;
1294
1295 if(c->minw > 0 && w < c->minw)
1296 w = c->minw;
1297 if(c->minh > 0 && h < c->minh)
1298 h = c->minh;
1299 if(c->maxw > 0 && w > c->maxw)
1300 w = c->maxw;
1301 if(c->maxh > 0 && h > c->maxh)
1302 h = c->maxh;
1303 }
1304 if(w <= 0 || h <= 0)
1305 return;
1306 /* TODO: offscreen appearance fixes */
1307 /*
1308 if(x > scr.sw)
1309 x = scr.sw - w - 2 * c->border;
1310 if(y > scr.sh)
1311 y = scr.sh - h - 2 * c->border;
1312 if(x + w + 2 * c->border < scr.sx)
1313 x = scr.sx;
1314 if(y + h + 2 * c->border < scr.sy)
1315 y = scr.sy;
1316 */
1317 if(c->x != x || c->y != y || c->w != w || c->h != h) {
1318 c->x = wc.x = x;
1319 c->y = wc.y = y;
1320 c->w = wc.width = w;
1321 c->h = wc.height = h;
1322 wc.border_width = c->border;
1323 XConfigureWindow(dpy, c->win, CWX | CWY | CWWidth | CWHeight | CWBorderWidth, &wc);
1324 configure(c);
1325 XSync(dpy, False);
1326 }
1327 }
1328
1329 void
1330 resizemouse(Client *c) {
1331 int ocx, ocy;
1332 int nw, nh;
1333 XEvent ev;
1334
1335 ocx = c->x;
1336 ocy = c->y;
1337 if(XGrabPointer(dpy, monitors[selmonitor].root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
1338 None, cursor[CurResize], CurrentTime) != GrabSuccess)
1339 return;
1340 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->border - 1, c->h + c->border - 1);
1341 for(;;) {
1342 XMaskEvent(dpy, MOUSEMASK | ExposureMask | SubstructureRedirectMask , &ev);
1343 switch(ev.type) {
1344 case ButtonRelease:
1345 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0,
1346 c->w + c->border - 1, c->h + c->border - 1);
1347 XUngrabPointer(dpy, CurrentTime);
1348 while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
1349 return;
1350 case ConfigureRequest:
1351 case Expose:
1352 case MapRequest:
1353 handler[ev.type](&ev);
1354 break;
1355 case MotionNotify:
1356 XSync(dpy, False);
1357 if((nw = ev.xmotion.x - ocx - 2 * c->border + 1) <= 0)
1358 nw = 1;
1359 if((nh = ev.xmotion.y - ocy - 2 * c->border + 1) <= 0)
1360 nh = 1;
1361 resize(c, c->x, c->y, nw, nh, True);
1362 break;
1363 }
1364 }
1365 }
1366
1367 void
1368 restack(void) {
1369 unsigned int i;
1370 Client *c;
1371 XEvent ev;
1372 XWindowChanges wc;
1373
1374 drawbar();
1375 if(!sel)
1376 return;
1377 if(sel->isfloating || (monitors[selmonitor].layout->arrange == floating))
1378 XRaiseWindow(dpy, sel->win);
1379 if(monitors[selmonitor].layout->arrange != floating) {
1380 wc.stack_mode = Below;
1381 wc.sibling = monitors[selmonitor].barwin;
1382 if(!sel->isfloating) {
1383 XConfigureWindow(dpy, sel->win, CWSibling | CWStackMode, &wc);
1384 wc.sibling = sel->win;
1385 }
1386 for(i = 0; i < mcount; i++) {
1387 for(c = nexttiled(clients, i); c; c = nexttiled(c->next, i)) {
1388 if(c == sel)
1389 continue;
1390 XConfigureWindow(dpy, c->win, CWSibling | CWStackMode, &wc);
1391 wc.sibling = c->win;
1392 }
1393 }
1394 }
1395 XSync(dpy, False);
1396 while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
1397 }
1398
1399 void
1400 run(void) {
1401 char *p;
1402 char buf[sizeof stext];
1403 fd_set rd;
1404 int r, xfd;
1405 unsigned int len, offset;
1406 XEvent ev;
1407
1408 /* main event loop, also reads status text from stdin */
1409 XSync(dpy, False);
1410 xfd = ConnectionNumber(dpy);
1411 readin = True;
1412 offset = 0;
1413 len = sizeof stext - 1;
1414 buf[len] = stext[len] = '\0'; /* 0-terminator is never touched */
1415 while(running) {
1416 FD_ZERO(&rd);
1417 if(readin)
1418 FD_SET(STDIN_FILENO, &rd);
1419 FD_SET(xfd, &rd);
1420 if(select(xfd + 1, &rd, NULL, NULL, NULL) == -1) {
1421 if(errno == EINTR)
1422 continue;
1423 eprint("select failed\n");
1424 }
1425 if(FD_ISSET(STDIN_FILENO, &rd)) {
1426 switch((r = read(STDIN_FILENO, buf + offset, len - offset))) {
1427 case -1:
1428 strncpy(stext, strerror(errno), len);
1429 readin = False;
1430 break;
1431 case 0:
1432 strncpy(stext, "EOF", 4);
1433 readin = False;
1434 break;
1435 default:
1436 for(p = buf + offset; r > 0; p++, r--, offset++)
1437 if(*p == '\n' || *p == '\0') {
1438 *p = '\0';
1439 strncpy(stext, buf, len);
1440 p += r - 1; /* p is buf + offset + r - 1 */
1441 for(r = 0; *(p - r) && *(p - r) != '\n'; r++);
1442 offset = r;
1443 if(r)
1444 memmove(buf, p - r + 1, r);
1445 break;
1446 }
1447 break;
1448 }
1449 drawbar();
1450 }
1451 while(XPending(dpy)) {
1452 XNextEvent(dpy, &ev);
1453 if(handler[ev.type])
1454 (handler[ev.type])(&ev); /* call handler */
1455 }
1456 }
1457 }
1458
1459 void
1460 scan(void) {
1461 unsigned int i, j, num;
1462 Window *wins, d1, d2;
1463 XWindowAttributes wa;
1464
1465 for(i = 0; i < mcount; i++) {
1466 Monitor *m = &monitors[i];
1467 wins = NULL;
1468 if(XQueryTree(dpy, m->root, &d1, &d2, &wins, &num)) {
1469 for(j = 0; j < num; j++) {
1470 if(!XGetWindowAttributes(dpy, wins[j], &wa)
1471 || wa.override_redirect || XGetTransientForHint(dpy, wins[j], &d1))
1472 continue;
1473 if(wa.map_state == IsViewable || getstate(wins[j]) == IconicState)
1474 manage(wins[j], &wa);
1475 }
1476 for(j = 0; j < num; j++) { /* now the transients */
1477 if(!XGetWindowAttributes(dpy, wins[j], &wa))
1478 continue;
1479 if(XGetTransientForHint(dpy, wins[j], &d1)
1480 && (wa.map_state == IsViewable || getstate(wins[j]) == IconicState))
1481 manage(wins[j], &wa);
1482 }
1483 }
1484 if(wins)
1485 XFree(wins);
1486 }
1487 }
1488
1489 void
1490 setclientstate(Client *c, long state) {
1491 long data[] = {state, None};
1492
1493 XChangeProperty(dpy, c->win, wmatom[WMState], wmatom[WMState], 32,
1494 PropModeReplace, (unsigned char *)data, 2);
1495 }
1496
1497 void
1498 setlayout(const char *arg) {
1499 unsigned int i;
1500 Monitor *m = &monitors[monitorat()];
1501
1502 if(!arg) {
1503 m->layout++;
1504 if(m->layout == &layouts[LENGTH(layouts)])
1505 m->layout = &layouts[0];
1506 }
1507 else {
1508 for(i = 0; i < LENGTH(layouts); i++)
1509 if(!strcmp(arg, layouts[i].symbol))
1510 break;
1511 if(i == LENGTH(layouts))
1512 return;
1513 m->layout = &layouts[i];
1514 }
1515 if(sel)
1516 arrange();
1517 else
1518 drawbar();
1519 }
1520
1521 void
1522 setmwfact(const char *arg) {
1523 double delta;
1524
1525 Monitor *m = &monitors[monitorat()];
1526
1527 if(!domwfact)
1528 return;
1529 /* arg handling, manipulate mwfact */
1530 if(arg == NULL)
1531 m->mwfact = MWFACT;
1532 else if(sscanf(arg, "%lf", &delta) == 1) {
1533 if(arg[0] == '+' || arg[0] == '-')
1534 m->mwfact += delta;
1535 else
1536 m->mwfact = delta;
1537 if(m->mwfact < 0.1)
1538 m->mwfact = 0.1;
1539 else if(m->mwfact > 0.9)
1540 m->mwfact = 0.9;
1541 }
1542 arrange();
1543 }
1544
1545 void
1546 setup(void) {
1547 unsigned int i, j, k;
1548 Monitor *m;
1549 XSetWindowAttributes wa;
1550 XineramaScreenInfo *info = NULL;
1551
1552 /* init atoms */
1553 wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
1554 wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
1555 wmatom[WMName] = XInternAtom(dpy, "WM_NAME", False);
1556 wmatom[WMState] = XInternAtom(dpy, "WM_STATE", False);
1557 netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
1558 netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
1559
1560 /* init cursors */
1561 wa.cursor = cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
1562 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
1563 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
1564
1565 // init screens/monitors first
1566 mcount = 1;
1567 if((isxinerama = XineramaIsActive(dpy)))
1568 info = XineramaQueryScreens(dpy, &mcount);
1569 monitors = emallocz(mcount * sizeof(Monitor));
1570
1571 for(i = 0; i < mcount; i++) {
1572 /* init geometry */
1573 m = &monitors[i];
1574
1575 m->screen = isxinerama ? 0 : i;
1576 m->root = RootWindow(dpy, m->screen);
1577
1578 if (mcount != 1 && isxinerama) {
1579 m->sx = info[i].x_org;
1580 m->sy = info[i].y_org;
1581 m->sw = info[i].width;
1582 m->sh = info[i].height;
1583 fprintf(stderr, "monitor[%d]: %d,%d,%d,%d\n", i, m->sx, m->sy, m->sw, m->sh);
1584 }
1585 else {
1586 m->sx = 0;
1587 m->sy = 0;
1588 m->sw = DisplayWidth(dpy, m->screen);
1589 m->sh = DisplayHeight(dpy, m->screen);
1590 }
1591
1592 m->seltags = emallocz(sizeof initags);
1593 m->prevtags = emallocz(sizeof initags);
1594
1595 memcpy(m->seltags, initags, sizeof initags);
1596 memcpy(m->prevtags, initags, sizeof initags);
1597
1598 /* init appearance */
1599 m->dc.norm[ColBorder] = getcolor(NORMBORDERCOLOR, m->screen);
1600 m->dc.norm[ColBG] = getcolor(NORMBGCOLOR, m->screen);
1601 m->dc.norm[ColFG] = getcolor(NORMFGCOLOR, m->screen);
1602 m->dc.sel[ColBorder] = getcolor(SELBORDERCOLOR, m->screen);
1603 m->dc.sel[ColBG] = getcolor(SELBGCOLOR, m->screen);
1604 m->dc.sel[ColFG] = getcolor(SELFGCOLOR, m->screen);
1605 initfont(m, FONT);
1606 m->dc.h = bh = m->dc.font.height + 2;
1607
1608 /* init layouts */
1609 m->mwfact = MWFACT;
1610 m->layout = &layouts[0];
1611 for(blw = k = 0; k < LENGTH(layouts); k++) {
1612 j = textw(m, layouts[k].symbol);
1613 if(j > blw)
1614 blw = j;
1615 }
1616
1617 // TODO: bpos per screen?
1618 bpos = BARPOS;
1619 wa.override_redirect = 1;
1620 wa.background_pixmap = ParentRelative;
1621 wa.event_mask = ButtonPressMask | ExposureMask;
1622
1623 /* init bars */
1624 m->barwin = XCreateWindow(dpy, m->root, m->sx, m->sy, m->sw, bh, 0,
1625 DefaultDepth(dpy, m->screen), CopyFromParent, DefaultVisual(dpy, m->screen),
1626 CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
1627 XDefineCursor(dpy, m->barwin, cursor[CurNormal]);
1628 updatebarpos(m);
1629 XMapRaised(dpy, m->barwin);
1630 strcpy(stext, "dwm-"VERSION);
1631 m->dc.drawable = XCreatePixmap(dpy, m->root, m->sw, bh, DefaultDepth(dpy, m->screen));
1632 m->dc.gc = XCreateGC(dpy, m->root, 0, 0);
1633 XSetLineAttributes(dpy, m->dc.gc, 1, LineSolid, CapButt, JoinMiter);
1634 if(!m->dc.font.set)
1635 XSetFont(dpy, m->dc.gc, m->dc.font.xfont->fid);
1636
1637 /* EWMH support per monitor */
1638 XChangeProperty(dpy, m->root, netatom[NetSupported], XA_ATOM, 32,
1639 PropModeReplace, (unsigned char *) netatom, NetLast);
1640
1641 /* select for events */
1642 wa.event_mask = SubstructureRedirectMask | SubstructureNotifyMask
1643 | EnterWindowMask | LeaveWindowMask | StructureNotifyMask;
1644 XChangeWindowAttributes(dpy, m->root, CWEventMask | CWCursor, &wa);
1645 XSelectInput(dpy, m->root, wa.event_mask);
1646 }
1647 if(info)
1648 XFree(info);
1649
1650 /* grab keys */
1651 grabkeys();
1652
1653 /* init tags */
1654 compileregs();
1655
1656 selmonitor = monitorat();
1657 fprintf(stderr, "selmonitor == %d\n", selmonitor);
1658 }
1659
1660 void
1661 spawn(const char *arg) {
1662 static char *shell = NULL;
1663
1664 if(!shell && !(shell = getenv("SHELL")))
1665 shell = "/bin/sh";
1666 if(!arg)
1667 return;
1668 /* The double-fork construct avoids zombie processes and keeps the code
1669 * clean from stupid signal handlers. */
1670 if(fork() == 0) {
1671 if(fork() == 0) {
1672 if(dpy)
1673 close(ConnectionNumber(dpy));
1674 setsid();
1675 execl(shell, shell, "-c", arg, (char *)NULL);
1676 fprintf(stderr, "dwm: execl '%s -c %s'", shell, arg);
1677 perror(" failed");
1678 }
1679 exit(0);
1680 }
1681 wait(0);
1682 }
1683
1684 void
1685 tag(const char *arg) {
1686 unsigned int i;
1687
1688 if(!sel)
1689 return;
1690 for(i = 0; i < LENGTH(tags); i++)
1691 sel->tags[i] = (NULL == arg);
1692 sel->tags[idxoftag(arg)] = True;
1693 arrange();
1694 }
1695
1696 unsigned int
1697 textnw(Monitor *m, const char *text, unsigned int len) {
1698 XRectangle r;
1699
1700 if(m->dc.font.set) {
1701 XmbTextExtents(m->dc.font.set, text, len, NULL, &r);
1702 return r.width;
1703 }
1704 return XTextWidth(m->dc.font.xfont, text, len);
1705 }
1706
1707 unsigned int
1708 textw(Monitor *m, const char *text) {
1709 return textnw(m, text, strlen(text)) + m->dc.font.height;
1710 }
1711
1712 void
1713 tile(void) {
1714 unsigned int i, j, n, nx, ny, nw, nh, mw, th;
1715 Client *c, *mc;
1716
1717 domwfact = dozoom = True;
1718
1719 nx = ny = nw = 0; /* gcc stupidity requires this */
1720
1721 for (i = 0; i < mcount; i++) {
1722 Monitor *m = &monitors[i];
1723
1724 for(n = 0, c = nexttiled(clients, i); c; c = nexttiled(c->next, i))
1725 n++;
1726
1727 for(j = 0, c = mc = nexttiled(clients, i); c; c = nexttiled(c->next, i)) {
1728 /* window geoms */
1729 mw = (n == 1) ? m->waw : m->mwfact * m->waw;
1730 th = (n > 1) ? m->wah / (n - 1) : 0;
1731 if(n > 1 && th < bh)
1732 th = m->wah;
1733 if(j == 0) { /* master */
1734 nx = m->wax;
1735 ny = m->way;
1736 nw = mw - 2 * c->border;
1737 nh = m->wah - 2 * c->border;
1738 }
1739 else { /* tile window */
1740 if(j == 1) {
1741 ny = m->way;
1742 nx += mc->w + 2 * mc->border;
1743 nw = m->waw - mw - 2 * c->border;
1744 }
1745 if(j + 1 == n) /* remainder */
1746 nh = (m->way + m->wah) - ny - 2 * c->border;
1747 else
1748 nh = th - 2 * c->border;
1749 }
1750 fprintf(stderr, "tile(%d, %d, %d, %d)\n", nx, ny, nw, nh);
1751 resize(c, nx, ny, nw, nh, RESIZEHINTS);
1752 if((RESIZEHINTS) && ((c->h < bh) || (c->h > nh) || (c->w < bh) || (c->w > nw)))
1753 /* client doesn't accept size constraints */
1754 resize(c, nx, ny, nw, nh, False);
1755 if(n > 1 && th != m->wah)
1756 ny = c->y + c->h + 2 * c->border;
1757
1758 j++;
1759 }
1760 }
1761 fprintf(stderr, "done\n");
1762 }
1763 void
1764 togglebar(const char *arg) {
1765 if(bpos == BarOff)
1766 bpos = (BARPOS == BarOff) ? BarTop : BARPOS;
1767 else
1768 bpos = BarOff;
1769 updatebarpos(&monitors[monitorat()]);
1770 arrange();
1771 }
1772
1773 void
1774 togglefloating(const char *arg) {
1775 if(!sel)
1776 return;
1777 sel->isfloating = !sel->isfloating;
1778 if(sel->isfloating)
1779 resize(sel, sel->x, sel->y, sel->w, sel->h, True);
1780 arrange();
1781 }
1782
1783 void
1784 toggletag(const char *arg) {
1785 unsigned int i, j;
1786
1787 if(!sel)
1788 return;
1789 i = idxoftag(arg);
1790 sel->tags[i] = !sel->tags[i];
1791 for(j = 0; j < LENGTH(tags) && !sel->tags[j]; j++);
1792 if(j == LENGTH(tags))
1793 sel->tags[i] = True; /* at least one tag must be enabled */
1794 arrange();
1795 }
1796
1797 void
1798 toggleview(const char *arg) {
1799 unsigned int i, j;
1800
1801 Monitor *m = &monitors[monitorat()];
1802
1803 i = idxoftag(arg);
1804 m->seltags[i] = !m->seltags[i];
1805 for(j = 0; j < LENGTH(tags) && !m->seltags[j]; j++);
1806 if(j == LENGTH(tags))
1807 m->seltags[i] = True; /* at least one tag must be viewed */
1808 arrange();
1809 }
1810
1811 void
1812 unban(Client *c) {
1813 if(!c->isbanned)
1814 return;
1815 XMoveWindow(dpy, c->win, c->x, c->y);
1816 c->isbanned = False;
1817 }
1818
1819 void
1820 unmanage(Client *c) {
1821 XWindowChanges wc;
1822
1823 wc.border_width = c->oldborder;
1824 /* The server grab construct avoids race conditions. */
1825 XGrabServer(dpy);
1826 XSetErrorHandler(xerrordummy);
1827 XConfigureWindow(dpy, c->win, CWBorderWidth, &wc); /* restore border */
1828 detach(c);
1829 detachstack(c);
1830 if(sel == c)
1831 focus(NULL);
1832 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
1833 setclientstate(c, WithdrawnState);
1834 free(c->tags);
1835 free(c);
1836 XSync(dpy, False);
1837 XSetErrorHandler(xerror);
1838 XUngrabServer(dpy);
1839 arrange();
1840 }
1841
1842 void
1843 unmapnotify(XEvent *e) {
1844 Client *c;
1845 XUnmapEvent *ev = &e->xunmap;
1846
1847 if((c = getclient(ev->window)))
1848 unmanage(c);
1849 }
1850
1851 void
1852 updatebarpos(Monitor *m) {
1853 XEvent ev;
1854
1855 m->wax = m->sx;
1856 m->way = m->sy;
1857 m->wah = m->sh;
1858 m->waw = m->sw;
1859 switch(bpos) {
1860 default:
1861 m->wah -= bh;
1862 m->way += bh;
1863 XMoveWindow(dpy, m->barwin, m->sx, m->sy);
1864 break;
1865 case BarBot:
1866 m->wah -= bh;
1867 XMoveWindow(dpy, m->barwin, m->sx, m->sy + m->wah);
1868 break;
1869 case BarOff:
1870 XMoveWindow(dpy, m->barwin, m->sx, m->sy - bh);
1871 break;
1872 }
1873 XSync(dpy, False);
1874 while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
1875 }
1876
1877 void
1878 updatesizehints(Client *c) {
1879 long msize;
1880 XSizeHints size;
1881
1882 if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
1883 size.flags = PSize;
1884 c->flags = size.flags;
1885 if(c->flags & PBaseSize) {
1886 c->basew = size.base_width;
1887 c->baseh = size.base_height;
1888 }
1889 else if(c->flags & PMinSize) {
1890 c->basew = size.min_width;
1891 c->baseh = size.min_height;
1892 }
1893 else
1894 c->basew = c->baseh = 0;
1895 if(c->flags & PResizeInc) {
1896 c->incw = size.width_inc;
1897 c->inch = size.height_inc;
1898 }
1899 else
1900 c->incw = c->inch = 0;
1901 if(c->flags & PMaxSize) {
1902 c->maxw = size.max_width;
1903 c->maxh = size.max_height;
1904 }
1905 else
1906 c->maxw = c->maxh = 0;
1907 if(c->flags & PMinSize) {
1908 c->minw = size.min_width;
1909 c->minh = size.min_height;
1910 }
1911 else if(c->flags & PBaseSize) {
1912 c->minw = size.base_width;
1913 c->minh = size.base_height;
1914 }
1915 else
1916 c->minw = c->minh = 0;
1917 if(c->flags & PAspect) {
1918 c->minax = size.min_aspect.x;
1919 c->maxax = size.max_aspect.x;
1920 c->minay = size.min_aspect.y;
1921 c->maxay = size.max_aspect.y;
1922 }
1923 else
1924 c->minax = c->maxax = c->minay = c->maxay = 0;
1925 c->isfixed = (c->maxw && c->minw && c->maxh && c->minh
1926 && c->maxw == c->minw && c->maxh == c->minh);
1927 }
1928
1929 void
1930 updatetitle(Client *c) {
1931 if(!gettextprop(c->win, netatom[NetWMName], c->name, sizeof c->name))
1932 gettextprop(c->win, wmatom[WMName], c->name, sizeof c->name);
1933 }
1934
1935 void
1936 updatewmhints(Client *c) {
1937 XWMHints *wmh;
1938
1939 if((wmh = XGetWMHints(dpy, c->win))) {
1940 c->isurgent = (wmh->flags & XUrgencyHint) ? True : False;
1941 XFree(wmh);
1942 }
1943 }
1944
1945 /* There's no way to check accesses to destroyed windows, thus those cases are
1946 * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
1947 * default error handler, which may call exit. */
1948 int
1949 xerror(Display *dpy, XErrorEvent *ee) {
1950 if(ee->error_code == BadWindow
1951 || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
1952 || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
1953 || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
1954 || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
1955 || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
1956 || (ee->request_code == X_GrabKey && ee->error_code == BadAccess)
1957 || (ee->request_code == X_CopyArea && ee->error_code == BadDrawable))
1958 return 0;
1959 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
1960 ee->request_code, ee->error_code);
1961 return xerrorxlib(dpy, ee); /* may call exit */
1962 }
1963
1964 int
1965 xerrordummy(Display *dsply, XErrorEvent *ee) {
1966 return 0;
1967 }
1968
1969 /* Startup Error handler to check if another window manager
1970 * is already running. */
1971 int
1972 xerrorstart(Display *dsply, XErrorEvent *ee) {
1973 otherwm = True;
1974 return -1;
1975 }
1976
1977 void
1978 view(const char *arg) {
1979 unsigned int i;
1980
1981 Monitor *m = &monitors[monitorat()];
1982
1983 memcpy(m->prevtags, m->seltags, sizeof initags);
1984 for(i = 0; i < LENGTH(tags); i++)
1985 m->seltags[i] = (NULL == arg);
1986 m->seltags[idxoftag(arg)] = True;
1987 arrange();
1988 }
1989
1990 void
1991 viewprevtag(const char *arg) {
1992 static Bool tmp[LENGTH(tags)];
1993
1994 Monitor *m = &monitors[monitorat()];
1995
1996 memcpy(tmp, m->seltags, sizeof initags);
1997 memcpy(m->seltags, m->prevtags, sizeof initags);
1998 memcpy(m->prevtags, tmp, sizeof initags);
1999 arrange();
2000 }
2001
2002 void
2003 zoom(const char *arg) {
2004 Client *c;
2005
2006 if(!sel || !dozoom || sel->isfloating)
2007 return;
2008 if((c = sel) == nexttiled(clients, c->monitor))
2009 if(!(c = nexttiled(c->next, c->monitor)))
2010 return;
2011 detach(c);
2012 attach(c);
2013 focus(c);
2014 arrange();
2015 }
2016
2017 void
2018 movetomonitor(const char *arg) {
2019 if (sel) {
2020 sel->monitor = arg ? atoi(arg) : (sel->monitor+1) % mcount;
2021
2022 memcpy(sel->tags, monitors[sel->monitor].seltags, sizeof initags);
2023 resize(sel, monitors[sel->monitor].wax, monitors[sel->monitor].way, sel->w, sel->h, True);
2024 arrange();
2025 }
2026 }
2027
2028 void
2029 selectmonitor(const char *arg) {
2030 Monitor *m = &monitors[arg ? atoi(arg) : (monitorat()+1) % mcount];
2031
2032 XWarpPointer(dpy, None, m->root, 0, 0, 0, 0, m->wax+m->waw/2, m->way+m->wah/2);
2033 focus(NULL);
2034 }
2035
2036
2037 int
2038 main(int argc, char *argv[]) {
2039 if(argc == 2 && !strcmp("-v", argv[1]))
2040 eprint("dwm-"VERSION", © 2006-2007 Anselm R. Garbe, Sander van Dijk, "
2041 "Jukka Salmi, Premysl Hruby, Szabolcs Nagy, Christof Musik\n");
2042 else if(argc != 1)
2043 eprint("usage: dwm [-v]\n");
2044
2045 setlocale(LC_CTYPE, "");
2046 if(!(dpy = XOpenDisplay(0)))
2047 eprint("dwm: cannot open display\n");
2048
2049 checkotherwm();
2050 setup();
2051 drawbar();
2052 scan();
2053 run();
2054 cleanup();
2055
2056 XCloseDisplay(dpy);
2057 return 0;
2058 }