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fixed wrong tagging stuff
[dwm.git] / dwm.c
1 /* See LICENSE file for copyright and license details.
2 *
3 * dynamic window manager is designed like any other X client as well. It is
4 * driven through handling X events. In contrast to other X clients, a window
5 * manager selects for SubstructureRedirectMask on the root window, to receive
6 * events about window (dis-)appearance. Only one X connection at a time is
7 * allowed to select for this event mask.
8 *
9 * Calls to fetch an X event from the event queue are blocking. Due reading
10 * status text from standard input, a select()-driven main loop has been
11 * implemented which selects for reads on the X connection and STDIN_FILENO to
12 * handle all data smoothly. The event handlers of dwm are organized in an
13 * array which is accessed whenever a new event has been fetched. This allows
14 * event dispatching in O(1) time.
15 *
16 * Each child of the root window is called a client, except windows which have
17 * set the override_redirect flag. Clients are organized in a global
18 * doubly-linked client list, the focus history is remembered through a global
19 * stack list. Each client contains an array of Bools of the same size as the
20 * global tags array to indicate the tags of a client.
21 *
22 * Keys and tagging rules are organized as arrays and defined in config.h.
23 *
24 * To understand everything else, start reading main().
25 */
26 #include <errno.h>
27 #include <locale.h>
28 #include <stdarg.h>
29 #include <stdio.h>
30 #include <stdlib.h>
31 #include <string.h>
32 #include <unistd.h>
33 #include <sys/select.h>
34 #include <sys/types.h>
35 #include <sys/wait.h>
36 #include <regex.h>
37 #include <X11/cursorfont.h>
38 #include <X11/keysym.h>
39 #include <X11/Xatom.h>
40 #include <X11/Xlib.h>
41 #include <X11/Xproto.h>
42 #include <X11/Xutil.h>
43 //#ifdef XINERAMA
44 #include <X11/extensions/Xinerama.h>
45 //#endif
46
47 /* macros */
48 #define BUTTONMASK (ButtonPressMask | ButtonReleaseMask)
49 #define CLEANMASK(mask) (mask & ~(numlockmask | LockMask))
50 #define LENGTH(x) (sizeof x / sizeof x[0])
51 #define MAXTAGLEN 16
52 #define MOUSEMASK (BUTTONMASK | PointerMotionMask)
53
54
55 /* enums */
56 enum { BarTop, BarBot, BarOff }; /* bar position */
57 enum { CurNormal, CurResize, CurMove, CurLast }; /* cursor */
58 enum { ColBorder, ColFG, ColBG, ColLast }; /* color */
59 enum { NetSupported, NetWMName, NetLast }; /* EWMH atoms */
60 enum { WMProtocols, WMDelete, WMName, WMState, WMLast };/* default atoms */
61
62 /* typedefs */
63 typedef struct Client Client;
64 struct Client {
65 char name[256];
66 int x, y, w, h;
67 int basew, baseh, incw, inch, maxw, maxh, minw, minh;
68 int minax, maxax, minay, maxay;
69 long flags;
70 unsigned int border, oldborder;
71 Bool isbanned, isfixed, isfloating;
72 Bool *tags;
73 Client *next;
74 Client *prev;
75 Client *snext;
76 Window win;
77 int monitor;
78 };
79
80 typedef struct {
81 int x, y, w, h;
82 unsigned long norm[ColLast];
83 unsigned long sel[ColLast];
84 Drawable drawable;
85 GC gc;
86 struct {
87 int ascent;
88 int descent;
89 int height;
90 XFontSet set;
91 XFontStruct *xfont;
92 } font;
93 } DC; /* draw context */
94
95 typedef struct {
96 unsigned long mod;
97 KeySym keysym;
98 void (*func)(const char *arg);
99 const char *arg;
100 } Key;
101
102 typedef struct {
103 const char *symbol;
104 void (*arrange)(void);
105 } Layout;
106
107 typedef struct {
108 const char *prop;
109 const char *tags;
110 Bool isfloating;
111 int monitor;
112 } Rule;
113
114 typedef struct {
115 regex_t *propregex;
116 regex_t *tagregex;
117 } Regs;
118
119 typedef struct {
120 int id;
121 Window barwin;
122 //TODO: Window root;
123 //TODO: int screen;
124 int sx, sy, sw, sh, wax, way, wah, waw;
125 DC dc;
126 Bool *seltags;
127 Bool *prevtags;
128 Layout *layout;
129 double mwfact;
130 } Monitor;
131
132 /* function declarations */
133 void applyrules(Client *c);
134 void arrange(void);
135 void attach(Client *c);
136 void attachstack(Client *c);
137 void ban(Client *c);
138 void buttonpress(XEvent *e);
139 void checkotherwm(void);
140 void cleanup(void);
141 void compileregs(void);
142 void configure(Client *c);
143 void configurenotify(XEvent *e);
144 void configurerequest(XEvent *e);
145 void destroynotify(XEvent *e);
146 void detach(Client *c);
147 void detachstack(Client *c);
148 void drawbar(void);
149 void drawsquare(Monitor *, Bool filled, Bool empty, unsigned long col[ColLast]);
150 void drawtext(Monitor *, const char *text, unsigned long col[ColLast]);
151 void *emallocz(unsigned int size);
152 void enternotify(XEvent *e);
153 void eprint(const char *errstr, ...);
154 void expose(XEvent *e);
155 void floating(void); /* default floating layout */
156 void focus(Client *c);
157 void focusin(XEvent *e);
158 void focusnext(const char *arg);
159 void focusprev(const char *arg);
160 Client *getclient(Window w);
161 unsigned long getcolor(const char *colstr);
162 long getstate(Window w);
163 Bool gettextprop(Window w, Atom atom, char *text, unsigned int size);
164 void grabbuttons(Client *c, Bool focused);
165 void grabkeys(void);
166 unsigned int idxoftag(const char *tag);
167 void initfont(Monitor*, const char *fontstr);
168 Bool isoccupied(Monitor *m, unsigned int t);
169 Bool isprotodel(Client *c);
170 Bool isvisible(Client *c, Monitor *m);
171 void keypress(XEvent *e);
172 void killclient(const char *arg);
173 void leavenotify(XEvent *e);
174 void manage(Window w, XWindowAttributes *wa);
175 void mappingnotify(XEvent *e);
176 void maprequest(XEvent *e);
177 void maximize(const char *arg);
178 void movemouse(Client *c);
179 Client *nexttiled(Client *c, Monitor *m);
180 void propertynotify(XEvent *e);
181 void quit(const char *arg);
182 void reapply(const char *arg);
183 void resize(Client *c, int x, int y, int w, int h, Bool sizehints);
184 void resizemouse(Client *c);
185 void restack(void);
186 void run(void);
187 void scan(void);
188 void setclientstate(Client *c, long state);
189 void setlayout(const char *arg);
190 void setmwfact(const char *arg);
191 void setup(void);
192 void spawn(const char *arg);
193 void tag(const char *arg);
194 unsigned int textnw(Monitor*, const char *text, unsigned int len);
195 unsigned int textw(Monitor*, const char *text);
196 void tile(void);
197 void togglebar(const char *arg);
198 void togglefloating(const char *arg);
199 void toggletag(const char *arg);
200 void toggleview(const char *arg);
201 void unban(Client *c);
202 void unmanage(Client *c);
203 void unmapnotify(XEvent *e);
204 void updatebarpos(Monitor *s);
205 void updatesizehints(Client *c);
206 void updatetitle(Client *c);
207 void view(const char *arg);
208 void viewprevtag(const char *arg); /* views previous selected tags */
209 int xerror(Display *dpy, XErrorEvent *ee);
210 int xerrordummy(Display *dsply, XErrorEvent *ee);
211 int xerrorstart(Display *dsply, XErrorEvent *ee);
212 void zoom(const char *arg);
213 int monitorat(int, int);
214 void movetomonitor(const char *arg);
215 void selectmonitor(const char *arg);
216
217 /* variables */
218 char stext[256];
219 int mcount, screen;
220 //double mwfact;
221 //int screen, sx, sy, sw, sh, wax, way, waw, wah;
222 int (*xerrorxlib)(Display *, XErrorEvent *);
223 unsigned int bh, bpos;
224 unsigned int blw = 0;
225 unsigned int numlockmask = 0;
226 void (*handler[LASTEvent]) (XEvent *) = {
227 [ButtonPress] = buttonpress,
228 [ConfigureRequest] = configurerequest,
229 [ConfigureNotify] = configurenotify,
230 [DestroyNotify] = destroynotify,
231 [EnterNotify] = enternotify,
232 [Expose] = expose,
233 [FocusIn] = focusin,
234 [KeyPress] = keypress,
235 [LeaveNotify] = leavenotify,
236 [MappingNotify] = mappingnotify,
237 [MapRequest] = maprequest,
238 [PropertyNotify] = propertynotify,
239 [UnmapNotify] = unmapnotify
240 };
241 Atom wmatom[WMLast], netatom[NetLast];
242 Bool domwfact = True;
243 Bool dozoom = True;
244 Bool otherwm, readin;
245 Bool running = True;
246 //Bool selscreen = True;
247 Client *clients = NULL;
248 Client *sel = NULL;
249 Client *stack = NULL;
250 Cursor cursor[CurLast];
251 Display *dpy;
252 DC dc = {0};
253 Window root;
254 //Layout *layout = NULL;
255 //Window barwin, root;
256 Regs *regs = NULL;
257 Monitor *monitors;
258 int selmonitor = 0;
259
260 /* configuration, allows nested code to access above variables */
261 #include "config.h"
262
263 //Bool prevtags[LENGTH(tags)];
264
265 /* function implementations */
266 void
267 applyrules(Client *c) {
268 static char buf[512];
269 unsigned int i, j;
270 regmatch_t tmp;
271 Bool matched_tag = False;
272 Bool matched_monitor = False;
273 XClassHint ch = { 0 };
274
275 /* rule matching */
276 XGetClassHint(dpy, c->win, &ch);
277 snprintf(buf, sizeof buf, "%s:%s:%s",
278 ch.res_class ? ch.res_class : "",
279 ch.res_name ? ch.res_name : "", c->name);
280 for(i = 0; i < LENGTH(rules); i++)
281 if(regs[i].propregex && !regexec(regs[i].propregex, buf, 1, &tmp, 0)) {
282 if (rules[i].monitor >= 0 && rules[i].monitor < mcount) {
283 matched_monitor = True;
284 c->monitor = rules[i].monitor;
285 }
286
287 c->isfloating = rules[i].isfloating;
288 for(j = 0; regs[i].tagregex && j < LENGTH(tags); j++) {
289 if(!regexec(regs[i].tagregex, tags[j], 1, &tmp, 0)) {
290 matched_tag = True;
291 c->tags[j] = True;
292 }
293 }
294 }
295 if(ch.res_class)
296 XFree(ch.res_class);
297 if(ch.res_name)
298 XFree(ch.res_name);
299 if(!matched_tag)
300 memcpy(c->tags, monitors[monitorat(-1, -1)].seltags, sizeof initags);
301 if (!matched_monitor)
302 c->monitor = monitorat(-1, -1);
303 }
304
305 void
306 arrange(void) {
307 Client *c;
308
309 for(c = clients; c; c = c->next)
310 if(isvisible(c, &monitors[c->monitor]))
311 unban(c);
312 else
313 ban(c);
314
315 monitors[selmonitor].layout->arrange();
316 focus(NULL);
317 restack();
318 }
319
320 void
321 attach(Client *c) {
322 if(clients)
323 clients->prev = c;
324 c->next = clients;
325 clients = c;
326 }
327
328 void
329 attachstack(Client *c) {
330 c->snext = stack;
331 stack = c;
332 }
333
334 void
335 ban(Client *c) {
336 if(c->isbanned)
337 return;
338 XMoveWindow(dpy, c->win, c->x + 3 * monitors[c->monitor].sw, c->y);
339 c->isbanned = True;
340 }
341
342 void
343 buttonpress(XEvent *e) {
344 unsigned int i, x;
345 Client *c;
346 XButtonPressedEvent *ev = &e->xbutton;
347
348 Monitor s = monitors[monitorat(-1, -1)];
349
350 if(ev->window == s.barwin) {
351 x = 0;
352 for(i = 0; i < LENGTH(tags); i++) {
353 x += textw(&s, tags[i]);
354 if(ev->x < x) {
355 if(ev->button == Button1) {
356 if(ev->state & MODKEY)
357 tag(tags[i]);
358 else
359 view(tags[i]);
360 }
361 else if(ev->button == Button3) {
362 if(ev->state & MODKEY)
363 toggletag(tags[i]);
364 else
365 toggleview(tags[i]);
366 }
367 return;
368 }
369 }
370 if((ev->x < x + blw) && ev->button == Button1)
371 setlayout(NULL);
372 }
373 else if((c = getclient(ev->window))) {
374 focus(c);
375 if(CLEANMASK(ev->state) != MODKEY)
376 return;
377 if(ev->button == Button1) {
378 if((s.layout->arrange == floating) || c->isfloating)
379 restack();
380 else
381 togglefloating(NULL);
382 movemouse(c);
383 }
384 else if(ev->button == Button2) {
385 if((floating != s.layout->arrange) && c->isfloating)
386 togglefloating(NULL);
387 else
388 zoom(NULL);
389 }
390 else if(ev->button == Button3 && !c->isfixed) {
391 if((floating == s.layout->arrange) || c->isfloating)
392 restack();
393 else
394 togglefloating(NULL);
395 resizemouse(c);
396 }
397 }
398 }
399
400 void
401 checkotherwm(void) {
402 otherwm = False;
403 XSetErrorHandler(xerrorstart);
404
405 /* this causes an error if some other window manager is running */
406 XSelectInput(dpy, root, SubstructureRedirectMask);
407 XSync(dpy, False);
408 if(otherwm)
409 eprint("dwm: another window manager is already running\n");
410 XSync(dpy, False);
411 XSetErrorHandler(NULL);
412 xerrorxlib = XSetErrorHandler(xerror);
413 XSync(dpy, False);
414 }
415
416 void
417 cleanup(void) {
418 unsigned int i;
419 close(STDIN_FILENO);
420 while(stack) {
421 unban(stack);
422 unmanage(stack);
423 }
424 for(i = 0; i < mcount; i++) {
425 Monitor *m = &monitors[i];
426 if(m->dc.font.set)
427 XFreeFontSet(dpy, m->dc.font.set);
428 else
429 XFreeFont(dpy, m->dc.font.xfont);
430 XUngrabKey(dpy, AnyKey, AnyModifier, root);
431 XFreePixmap(dpy, m->dc.drawable);
432 XFreeGC(dpy, m->dc.gc);
433 XDestroyWindow(dpy, m->barwin);
434 XFreeCursor(dpy, cursor[CurNormal]);
435 XFreeCursor(dpy, cursor[CurResize]);
436 XFreeCursor(dpy, cursor[CurMove]);
437 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
438 XSync(dpy, False);
439 }
440 }
441
442 void
443 compileregs(void) {
444 unsigned int i;
445 regex_t *reg;
446
447 if(regs)
448 return;
449 regs = emallocz(LENGTH(rules) * sizeof(Regs));
450 for(i = 0; i < LENGTH(rules); i++) {
451 if(rules[i].prop) {
452 reg = emallocz(sizeof(regex_t));
453 if(regcomp(reg, rules[i].prop, REG_EXTENDED))
454 free(reg);
455 else
456 regs[i].propregex = reg;
457 }
458 if(rules[i].tags) {
459 reg = emallocz(sizeof(regex_t));
460 if(regcomp(reg, rules[i].tags, REG_EXTENDED))
461 free(reg);
462 else
463 regs[i].tagregex = reg;
464 }
465 }
466 }
467
468 void
469 configure(Client *c) {
470 XConfigureEvent ce;
471
472 ce.type = ConfigureNotify;
473 ce.display = dpy;
474 ce.event = c->win;
475 ce.window = c->win;
476 ce.x = c->x;
477 ce.y = c->y;
478 ce.width = c->w;
479 ce.height = c->h;
480 ce.border_width = c->border;
481 ce.above = None;
482 ce.override_redirect = False;
483 XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&ce);
484 }
485
486 void
487 configurenotify(XEvent *e) {
488 XConfigureEvent *ev = &e->xconfigure;
489 Monitor *m = &monitors[selmonitor];
490
491 if(ev->window == root && (ev->width != m->sw || ev->height != m->sh)) {
492 m->sw = ev->width;
493 m->sh = ev->height;
494 XFreePixmap(dpy, dc.drawable);
495 dc.drawable = XCreatePixmap(dpy, root, m->sw, bh, DefaultDepth(dpy, screen));
496 XResizeWindow(dpy, m->barwin, m->sw, bh);
497 updatebarpos(m);
498 arrange();
499 }
500 }
501
502 void
503 configurerequest(XEvent *e) {
504 Client *c;
505 XConfigureRequestEvent *ev = &e->xconfigurerequest;
506 XWindowChanges wc;
507
508 if((c = getclient(ev->window))) {
509 Monitor *m = &monitors[c->monitor];
510 if(ev->value_mask & CWBorderWidth)
511 c->border = ev->border_width;
512 if(c->isfixed || c->isfloating || (floating == m->layout->arrange)) {
513 if(ev->value_mask & CWX)
514 c->x = m->sx+ev->x;
515 if(ev->value_mask & CWY)
516 c->y = m->sy+ev->y;
517 if(ev->value_mask & CWWidth)
518 c->w = ev->width;
519 if(ev->value_mask & CWHeight)
520 c->h = ev->height;
521 if((c->x - m->sx + c->w) > m->sw && c->isfloating)
522 c->x = m->sx + (m->sw / 2 - c->w / 2); /* center in x direction */
523 if((c->y - m->sy + c->h) > m->sh && c->isfloating)
524 c->y = m->sy + (m->sh / 2 - c->h / 2); /* center in y direction */
525 if((ev->value_mask & (CWX | CWY))
526 && !(ev->value_mask & (CWWidth | CWHeight)))
527 configure(c);
528 if(isvisible(c, &monitors[monitorat(-1,-1)]))
529 XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
530 }
531 else
532 configure(c);
533 }
534 else {
535 wc.x = ev->x;
536 wc.y = ev->y;
537 wc.width = ev->width;
538 wc.height = ev->height;
539 wc.border_width = ev->border_width;
540 wc.sibling = ev->above;
541 wc.stack_mode = ev->detail;
542 XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
543 }
544 XSync(dpy, False);
545 }
546
547 void
548 destroynotify(XEvent *e) {
549 Client *c;
550 XDestroyWindowEvent *ev = &e->xdestroywindow;
551
552 if((c = getclient(ev->window)))
553 unmanage(c);
554 }
555
556 void
557 detach(Client *c) {
558 if(c->prev)
559 c->prev->next = c->next;
560 if(c->next)
561 c->next->prev = c->prev;
562 if(c == clients)
563 clients = c->next;
564 c->next = c->prev = NULL;
565 }
566
567 void
568 detachstack(Client *c) {
569 Client **tc;
570
571 for(tc=&stack; *tc && *tc != c; tc=&(*tc)->snext);
572 *tc = c->snext;
573 }
574
575 void
576 drawbar(void) {
577 int i, x, s;
578
579 for(s = 0; s < mcount; ++s) {
580 Monitor *m = &monitors[s];
581 m->dc.x = 0;
582 for(i = 0; i < LENGTH(tags); i++) {
583 m->dc.w = textw(m, tags[i]);
584 if(m->seltags[i]) {
585 drawtext(m, tags[i], m->dc.sel);
586 drawsquare(m, sel && sel->tags[i] && sel->monitor == m->id, isoccupied(m, i), m->dc.sel);
587 }
588 else {
589 drawtext(m, tags[i], m->dc.norm);
590 drawsquare(m, sel && sel->tags[i] && sel->monitor == m->id, isoccupied(m, i), m->dc.norm);
591 }
592 m->dc.x += m->dc.w;
593 }
594 m->dc.w = blw;
595 drawtext(m, m->layout->symbol, m->dc.norm);
596 x = m->dc.x + m->dc.w;
597 m->dc.w = textw(m, stext);
598 m->dc.x = m->sw - m->dc.w;
599 if(m->dc.x < x) {
600 m->dc.x = x;
601 m->dc.w = m->sw - x;
602 }
603 drawtext(m, stext, m->dc.norm);
604 if((m->dc.w = m->dc.x - x) > bh) {
605 m->dc.x = x;
606 if(sel && sel->monitor == m->id) {
607 drawtext(m, sel->name, m->dc.sel);
608 drawsquare(m, False, sel->isfloating, m->dc.sel);
609 }
610 else
611 drawtext(m, NULL, m->dc.norm);
612 }
613 XCopyArea(dpy, m->dc.drawable, m->barwin, m->dc.gc, 0, 0, m->sw, bh, 0, 0);
614 XSync(dpy, False);
615 }
616 }
617
618 void
619 drawsquare(Monitor *m, Bool filled, Bool empty, unsigned long col[ColLast]) {
620 int x;
621 XGCValues gcv;
622 XRectangle r = { m->dc.x, m->dc.y, m->dc.w, m->dc.h };
623
624 gcv.foreground = col[ColFG];
625 XChangeGC(dpy, m->dc.gc, GCForeground, &gcv);
626 x = (m->dc.font.ascent + m->dc.font.descent + 2) / 4;
627 r.x = m->dc.x + 1;
628 r.y = m->dc.y + 1;
629 if(filled) {
630 r.width = r.height = x + 1;
631 XFillRectangles(dpy, m->dc.drawable, m->dc.gc, &r, 1);
632 }
633 else if(empty) {
634 r.width = r.height = x;
635 XDrawRectangles(dpy, m->dc.drawable, m->dc.gc, &r, 1);
636 }
637 }
638
639 void
640 drawtext(Monitor *m, const char *text, unsigned long col[ColLast]) {
641 int x, y, w, h;
642 static char buf[256];
643 unsigned int len, olen;
644 XRectangle r = { m->dc.x, m->dc.y, m->dc.w, m->dc.h };
645
646 XSetForeground(dpy, m->dc.gc, col[ColBG]);
647 XFillRectangles(dpy, m->dc.drawable, m->dc.gc, &r, 1);
648 if(!text)
649 return;
650 w = 0;
651 olen = len = strlen(text);
652 if(len >= sizeof buf)
653 len = sizeof buf - 1;
654 memcpy(buf, text, len);
655 buf[len] = 0;
656 h = m->dc.font.ascent + m->dc.font.descent;
657 y = m->dc.y + (m->dc.h / 2) - (h / 2) + m->dc.font.ascent;
658 x = m->dc.x + (h / 2);
659 /* shorten text if necessary */
660 while(len && (w = textnw(m, buf, len)) > m->dc.w - h)
661 buf[--len] = 0;
662 if(len < olen) {
663 if(len > 1)
664 buf[len - 1] = '.';
665 if(len > 2)
666 buf[len - 2] = '.';
667 if(len > 3)
668 buf[len - 3] = '.';
669 }
670 if(w > m->dc.w)
671 return; /* too long */
672 XSetForeground(dpy, m->dc.gc, col[ColFG]);
673 if(m->dc.font.set)
674 XmbDrawString(dpy, m->dc.drawable, m->dc.font.set, m->dc.gc, x, y, buf, len);
675 else
676 XDrawString(dpy, m->dc.drawable, m->dc.gc, x, y, buf, len);
677 }
678
679 void *
680 emallocz(unsigned int size) {
681 void *res = calloc(1, size);
682
683 if(!res)
684 eprint("fatal: could not malloc() %u bytes\n", size);
685 return res;
686 }
687
688 void
689 enternotify(XEvent *e) {
690 Client *c;
691 XCrossingEvent *ev = &e->xcrossing;
692
693 if(ev->mode != NotifyNormal || ev->detail == NotifyInferior)
694 return;
695 if((c = getclient(ev->window)))
696 focus(c);
697 else if(ev->window == root) {
698 selmonitor = True;
699 focus(NULL);
700 }
701 }
702
703 void
704 eprint(const char *errstr, ...) {
705 va_list ap;
706
707 va_start(ap, errstr);
708 vfprintf(stderr, errstr, ap);
709 va_end(ap);
710 exit(EXIT_FAILURE);
711 }
712
713 void
714 expose(XEvent *e) {
715 XExposeEvent *ev = &e->xexpose;
716
717 if(ev->count == 0) {
718 if(ev->window == monitors[selmonitor].barwin)
719 drawbar();
720 }
721 }
722
723 void
724 floating(void) { /* default floating layout */
725 Client *c;
726
727 domwfact = dozoom = False;
728 for(c = clients; c; c = c->next)
729 if(isvisible(c, &monitors[selmonitor]))
730 resize(c, c->x, c->y, c->w, c->h, True);
731 }
732
733 void
734 focus(Client *c) {
735 Monitor *m = &monitors[monitorat(-1, -1)];
736 if(!c || (c && !isvisible(c, m)))
737 for(c = stack; c && !isvisible(c, m); c = c->snext);
738 if(sel && sel != c) {
739 grabbuttons(sel, False);
740 XSetWindowBorder(dpy, sel->win, monitors[sel->monitor].dc.norm[ColBorder]);
741 }
742 if(c) {
743 detachstack(c);
744 attachstack(c);
745 grabbuttons(c, True);
746 }
747 sel = c;
748 drawbar();
749 if(c) {
750 XSetWindowBorder(dpy, c->win, monitors[c->monitor].dc.sel[ColBorder]);
751 XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
752 selmonitor = monitorat(c->x, c->y);
753 }
754 else {
755 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
756 selmonitor = monitorat(-1, -1);
757 }
758 }
759
760 void
761 focusin(XEvent *e) { /* there are some broken focus acquiring clients */
762 XFocusChangeEvent *ev = &e->xfocus;
763
764 if(sel && ev->window != sel->win)
765 XSetInputFocus(dpy, sel->win, RevertToPointerRoot, CurrentTime);
766 }
767
768 void
769 focusnext(const char *arg) {
770 Client *c;
771 Monitor *m = &monitors[selmonitor];
772
773 if(!sel)
774 return;
775 for(c = sel->next; c && !isvisible(c, m); c = c->next);
776 if(!c)
777 for(c = clients; c && !isvisible(c, m); c = c->next);
778 if(c) {
779 focus(c);
780 restack();
781 }
782 }
783
784 void
785 focusprev(const char *arg) {
786 Client *c;
787 Monitor *m = &monitors[selmonitor];
788
789 if(!sel)
790 return;
791 for(c = sel->prev; c && !isvisible(c, m); c = c->prev);
792 if(!c) {
793 for(c = clients; c && c->next; c = c->next);
794 for(; c && !isvisible(c, m); c = c->prev);
795 }
796 if(c) {
797 focus(c);
798 restack();
799 }
800 }
801
802 Client *
803 getclient(Window w) {
804 Client *c;
805
806 for(c = clients; c && c->win != w; c = c->next);
807 return c;
808 }
809
810 unsigned long
811 getcolor(const char *colstr) {
812 Colormap cmap = DefaultColormap(dpy, screen);
813 XColor color;
814
815 if(!XAllocNamedColor(dpy, cmap, colstr, &color, &color))
816 eprint("error, cannot allocate color '%s'\n", colstr);
817 return color.pixel;
818 }
819
820 long
821 getstate(Window w) {
822 int format, status;
823 long result = -1;
824 unsigned char *p = NULL;
825 unsigned long n, extra;
826 Atom real;
827
828 status = XGetWindowProperty(dpy, w, wmatom[WMState], 0L, 2L, False, wmatom[WMState],
829 &real, &format, &n, &extra, (unsigned char **)&p);
830 if(status != Success)
831 return -1;
832 if(n != 0)
833 result = *p;
834 XFree(p);
835 return result;
836 }
837
838 Bool
839 gettextprop(Window w, Atom atom, char *text, unsigned int size) {
840 char **list = NULL;
841 int n;
842 XTextProperty name;
843
844 if(!text || size == 0)
845 return False;
846 text[0] = '\0';
847 XGetTextProperty(dpy, w, &name, atom);
848 if(!name.nitems)
849 return False;
850 if(name.encoding == XA_STRING)
851 strncpy(text, (char *)name.value, size - 1);
852 else {
853 if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
854 && n > 0 && *list) {
855 strncpy(text, *list, size - 1);
856 XFreeStringList(list);
857 }
858 }
859 text[size - 1] = '\0';
860 XFree(name.value);
861 return True;
862 }
863
864 void
865 grabbuttons(Client *c, Bool focused) {
866 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
867
868 if(focused) {
869 XGrabButton(dpy, Button1, MODKEY, c->win, False, BUTTONMASK,
870 GrabModeAsync, GrabModeSync, None, None);
871 XGrabButton(dpy, Button1, MODKEY | LockMask, c->win, False, BUTTONMASK,
872 GrabModeAsync, GrabModeSync, None, None);
873 XGrabButton(dpy, Button1, MODKEY | numlockmask, c->win, False, BUTTONMASK,
874 GrabModeAsync, GrabModeSync, None, None);
875 XGrabButton(dpy, Button1, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
876 GrabModeAsync, GrabModeSync, None, None);
877
878 XGrabButton(dpy, Button2, MODKEY, c->win, False, BUTTONMASK,
879 GrabModeAsync, GrabModeSync, None, None);
880 XGrabButton(dpy, Button2, MODKEY | LockMask, c->win, False, BUTTONMASK,
881 GrabModeAsync, GrabModeSync, None, None);
882 XGrabButton(dpy, Button2, MODKEY | numlockmask, c->win, False, BUTTONMASK,
883 GrabModeAsync, GrabModeSync, None, None);
884 XGrabButton(dpy, Button2, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
885 GrabModeAsync, GrabModeSync, None, None);
886
887 XGrabButton(dpy, Button3, MODKEY, c->win, False, BUTTONMASK,
888 GrabModeAsync, GrabModeSync, None, None);
889 XGrabButton(dpy, Button3, MODKEY | LockMask, c->win, False, BUTTONMASK,
890 GrabModeAsync, GrabModeSync, None, None);
891 XGrabButton(dpy, Button3, MODKEY | numlockmask, c->win, False, BUTTONMASK,
892 GrabModeAsync, GrabModeSync, None, None);
893 XGrabButton(dpy, Button3, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
894 GrabModeAsync, GrabModeSync, None, None);
895 }
896 else
897 XGrabButton(dpy, AnyButton, AnyModifier, c->win, False, BUTTONMASK,
898 GrabModeAsync, GrabModeSync, None, None);
899 }
900
901 void
902 grabkeys(void) {
903 unsigned int i;
904 KeyCode code;
905
906 XUngrabKey(dpy, AnyKey, AnyModifier, root);
907 for(i = 0; i < LENGTH(keys); i++) {
908 code = XKeysymToKeycode(dpy, keys[i].keysym);
909 XGrabKey(dpy, code, keys[i].mod, root, True,
910 GrabModeAsync, GrabModeAsync);
911 XGrabKey(dpy, code, keys[i].mod | LockMask, root, True,
912 GrabModeAsync, GrabModeAsync);
913 XGrabKey(dpy, code, keys[i].mod | numlockmask, root, True,
914 GrabModeAsync, GrabModeAsync);
915 XGrabKey(dpy, code, keys[i].mod | numlockmask | LockMask, root, True,
916 GrabModeAsync, GrabModeAsync);
917 }
918 }
919
920 unsigned int
921 idxoftag(const char *tag) {
922 unsigned int i;
923
924 for(i = 0; (i < LENGTH(tags)) && (tags[i] != tag); i++);
925 return (i < LENGTH(tags)) ? i : 0;
926 }
927
928 void
929 initfont(Monitor *m, const char *fontstr) {
930 char *def, **missing;
931 int i, n;
932
933 missing = NULL;
934 if(m->dc.font.set)
935 XFreeFontSet(dpy, m->dc.font.set);
936 m->dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
937 if(missing) {
938 while(n--)
939 fprintf(stderr, "dwm: missing fontset: %s\n", missing[n]);
940 XFreeStringList(missing);
941 }
942 if(m->dc.font.set) {
943 XFontSetExtents *font_extents;
944 XFontStruct **xfonts;
945 char **font_names;
946 m->dc.font.ascent = m->dc.font.descent = 0;
947 font_extents = XExtentsOfFontSet(m->dc.font.set);
948 n = XFontsOfFontSet(m->dc.font.set, &xfonts, &font_names);
949 for(i = 0, m->dc.font.ascent = 0, m->dc.font.descent = 0; i < n; i++) {
950 if(m->dc.font.ascent < (*xfonts)->ascent)
951 m->dc.font.ascent = (*xfonts)->ascent;
952 if(m->dc.font.descent < (*xfonts)->descent)
953 m->dc.font.descent = (*xfonts)->descent;
954 xfonts++;
955 }
956 }
957 else {
958 if(m->dc.font.xfont)
959 XFreeFont(dpy, m->dc.font.xfont);
960 m->dc.font.xfont = NULL;
961 if(!(m->dc.font.xfont = XLoadQueryFont(dpy, fontstr))
962 && !(m->dc.font.xfont = XLoadQueryFont(dpy, "fixed")))
963 eprint("error, cannot load font: '%s'\n", fontstr);
964 m->dc.font.ascent = m->dc.font.xfont->ascent;
965 m->dc.font.descent = m->dc.font.xfont->descent;
966 }
967 m->dc.font.height = m->dc.font.ascent + m->dc.font.descent;
968 }
969
970 Bool
971 isoccupied(Monitor *m, unsigned int t) {
972 Client *c;
973
974 for(c = clients; c; c = c->next)
975 if(c->tags[t] && c->monitor == m->id)
976 return True;
977 return False;
978 }
979
980 Bool
981 isprotodel(Client *c) {
982 int i, n;
983 Atom *protocols;
984 Bool ret = False;
985
986 if(XGetWMProtocols(dpy, c->win, &protocols, &n)) {
987 for(i = 0; !ret && i < n; i++)
988 if(protocols[i] == wmatom[WMDelete])
989 ret = True;
990 XFree(protocols);
991 }
992 return ret;
993 }
994
995 Bool
996 isvisible(Client *c, Monitor *m) {
997 unsigned int i;
998
999 for(i = 0; i < LENGTH(tags); i++)
1000 if(c->tags[i] && monitors[c->monitor].seltags[i] && m->id == c->monitor)
1001 return True;
1002 return False;
1003 }
1004
1005 void
1006 keypress(XEvent *e) {
1007 unsigned int i;
1008 KeySym keysym;
1009 XKeyEvent *ev;
1010
1011 ev = &e->xkey;
1012 keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
1013 for(i = 0; i < LENGTH(keys); i++)
1014 if(keysym == keys[i].keysym
1015 && CLEANMASK(keys[i].mod) == CLEANMASK(ev->state))
1016 {
1017 if(keys[i].func)
1018 keys[i].func(keys[i].arg);
1019 }
1020 }
1021
1022 void
1023 killclient(const char *arg) {
1024 XEvent ev;
1025
1026 if(!sel)
1027 return;
1028 if(isprotodel(sel)) {
1029 ev.type = ClientMessage;
1030 ev.xclient.window = sel->win;
1031 ev.xclient.message_type = wmatom[WMProtocols];
1032 ev.xclient.format = 32;
1033 ev.xclient.data.l[0] = wmatom[WMDelete];
1034 ev.xclient.data.l[1] = CurrentTime;
1035 XSendEvent(dpy, sel->win, False, NoEventMask, &ev);
1036 }
1037 else
1038 XKillClient(dpy, sel->win);
1039 }
1040
1041 void
1042 leavenotify(XEvent *e) {
1043 XCrossingEvent *ev = &e->xcrossing;
1044
1045 if((ev->window == root) && !ev->same_screen) {
1046 selmonitor = False;
1047 focus(NULL);
1048 }
1049 }
1050
1051 void
1052 manage(Window w, XWindowAttributes *wa) {
1053 Client *c, *t = NULL;
1054 Window trans;
1055 Status rettrans;
1056 XWindowChanges wc;
1057
1058 c = emallocz(sizeof(Client));
1059 c->tags = emallocz(sizeof initags);
1060 c->win = w;
1061
1062 applyrules(c);
1063 Monitor *m = &monitors[c->monitor];
1064
1065 c->x = wa->x+m->sx;
1066 c->y = wa->y+m->sy;
1067 c->w = wa->width;
1068 c->h = wa->height;
1069 c->oldborder = wa->border_width;
1070
1071 if (monitorat(c->x, c->y) != c->monitor) {
1072 c->x = m->sx;
1073 c->y = m->sy;
1074 }
1075
1076 if(c->w == m->sw && c->h == m->sh) {
1077 c->x = m->sx;
1078 c->y = m->sy;
1079 c->border = wa->border_width;
1080 }
1081 else {
1082 if(c->x + c->w + 2 * c->border > m->wax + m->waw)
1083 c->x = m->wax + m->waw - c->w - 2 * c->border;
1084 if(c->y + c->h + 2 * c->border > m->way + m->wah)
1085 c->y = m->way + m->wah - c->h - 2 * c->border;
1086 if(c->x < m->wax)
1087 c->x = m->wax;
1088 if(c->y < m->way)
1089 c->y = m->way;
1090 c->border = BORDERPX;
1091 }
1092 wc.border_width = c->border;
1093 XConfigureWindow(dpy, w, CWBorderWidth, &wc);
1094 XSetWindowBorder(dpy, w, m->dc.norm[ColBorder]);
1095 configure(c); /* propagates border_width, if size doesn't change */
1096 updatesizehints(c);
1097 XSelectInput(dpy, w, EnterWindowMask | FocusChangeMask | PropertyChangeMask | StructureNotifyMask);
1098 grabbuttons(c, False);
1099 updatetitle(c);
1100 if((rettrans = XGetTransientForHint(dpy, w, &trans) == Success))
1101 for(t = clients; t && t->win != trans; t = t->next);
1102 if(t)
1103 memcpy(c->tags, t->tags, sizeof initags);
1104 if(!c->isfloating)
1105 c->isfloating = (rettrans == Success) || c->isfixed;
1106 attach(c);
1107 attachstack(c);
1108 XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h); /* some windows require this */
1109 ban(c);
1110 XMapWindow(dpy, c->win);
1111 setclientstate(c, NormalState);
1112 arrange();
1113 }
1114
1115 void
1116 mappingnotify(XEvent *e) {
1117 XMappingEvent *ev = &e->xmapping;
1118
1119 XRefreshKeyboardMapping(ev);
1120 if(ev->request == MappingKeyboard)
1121 grabkeys();
1122 }
1123
1124 void
1125 maprequest(XEvent *e) {
1126 static XWindowAttributes wa;
1127 XMapRequestEvent *ev = &e->xmaprequest;
1128
1129 if(!XGetWindowAttributes(dpy, ev->window, &wa))
1130 return;
1131 if(wa.override_redirect)
1132 return;
1133 if(!getclient(ev->window))
1134 manage(ev->window, &wa);
1135 }
1136
1137 void
1138 maximize(const char *arg) {
1139 /*
1140 if(!sel || (!sel->isfloating && layout->arrange != floating))
1141 return;
1142 resize(sel, wax, way, waw - 2 * sel->border, wah - 2 * sel->border, True);
1143 */
1144 }
1145
1146 void
1147 movemouse(Client *c) {
1148 int x1, y1, ocx, ocy, di, nx, ny;
1149 unsigned int dui;
1150 Window dummy;
1151 XEvent ev;
1152
1153 ocx = nx = c->x;
1154 ocy = ny = c->y;
1155 if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
1156 None, cursor[CurMove], CurrentTime) != GrabSuccess)
1157 return;
1158 XQueryPointer(dpy, root, &dummy, &dummy, &x1, &y1, &di, &di, &dui);
1159 for(;;) {
1160 XMaskEvent(dpy, MOUSEMASK | ExposureMask | SubstructureRedirectMask, &ev);
1161 switch (ev.type) {
1162 case ButtonRelease:
1163 XUngrabPointer(dpy, CurrentTime);
1164 return;
1165 case ConfigureRequest:
1166 case Expose:
1167 case MapRequest:
1168 handler[ev.type](&ev);
1169 break;
1170 case MotionNotify:
1171 XSync(dpy, False);
1172 nx = ocx + (ev.xmotion.x - x1);
1173 ny = ocy + (ev.xmotion.y - y1);
1174 Monitor *m = &monitors[monitorat(nx, ny)];
1175 if(abs(m->wax - nx) < SNAP)
1176 nx = m->wax;
1177 else if(abs((m->wax + m->waw) - (nx + c->w + 2 * c->border)) < SNAP)
1178 nx = m->wax + m->waw - c->w - 2 * c->border;
1179 if(abs(m->way - ny) < SNAP)
1180 ny = m->way;
1181 else if(abs((m->way + m->wah) - (ny + c->h + 2 * c->border)) < SNAP)
1182 ny = m->way + m->wah - c->h - 2 * c->border;
1183 resize(c, nx, ny, c->w, c->h, False);
1184 memcpy(c->tags, monitors[monitorat(nx, ny)].seltags, sizeof initags);
1185 break;
1186 }
1187 }
1188 }
1189
1190 Client *
1191 nexttiled(Client *c, Monitor *m) {
1192 for(; c && (c->isfloating || !isvisible(c, m)); c = c->next);
1193 return c;
1194 }
1195
1196 void
1197 propertynotify(XEvent *e) {
1198 Client *c;
1199 Window trans;
1200 XPropertyEvent *ev = &e->xproperty;
1201
1202 if(ev->state == PropertyDelete)
1203 return; /* ignore */
1204 if((c = getclient(ev->window))) {
1205 switch (ev->atom) {
1206 default: break;
1207 case XA_WM_TRANSIENT_FOR:
1208 XGetTransientForHint(dpy, c->win, &trans);
1209 if(!c->isfloating && (c->isfloating = (getclient(trans) != NULL)))
1210 arrange();
1211 break;
1212 case XA_WM_NORMAL_HINTS:
1213 updatesizehints(c);
1214 break;
1215 }
1216 if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
1217 updatetitle(c);
1218 if(c == sel)
1219 drawbar();
1220 }
1221 }
1222 }
1223
1224 void
1225 quit(const char *arg) {
1226 readin = running = False;
1227 }
1228
1229 void
1230 reapply(const char *arg) {
1231 static Bool zerotags[LENGTH(tags)] = { 0 };
1232 Client *c;
1233
1234 for(c = clients; c; c = c->next) {
1235 memcpy(c->tags, zerotags, sizeof zerotags);
1236 applyrules(c);
1237 }
1238 arrange();
1239 }
1240
1241 void
1242 resize(Client *c, int x, int y, int w, int h, Bool sizehints) {
1243 XWindowChanges wc;
1244 Monitor scr = monitors[monitorat(x, y)];
1245 c->monitor = scr.id;
1246
1247 if(sizehints) {
1248 /* set minimum possible */
1249 if (w < 1)
1250 w = 1;
1251 if (h < 1)
1252 h = 1;
1253
1254 /* temporarily remove base dimensions */
1255 w -= c->basew;
1256 h -= c->baseh;
1257
1258 /* adjust for aspect limits */
1259 if (c->minay > 0 && c->maxay > 0 && c->minax > 0 && c->maxax > 0) {
1260 if (w * c->maxay > h * c->maxax)
1261 w = h * c->maxax / c->maxay;
1262 else if (w * c->minay < h * c->minax)
1263 h = w * c->minay / c->minax;
1264 }
1265
1266 /* adjust for increment value */
1267 if(c->incw)
1268 w -= w % c->incw;
1269 if(c->inch)
1270 h -= h % c->inch;
1271
1272 /* restore base dimensions */
1273 w += c->basew;
1274 h += c->baseh;
1275
1276 if(c->minw > 0 && w < c->minw)
1277 w = c->minw;
1278 if(c->minh > 0 && h < c->minh)
1279 h = c->minh;
1280 if(c->maxw > 0 && w > c->maxw)
1281 w = c->maxw;
1282 if(c->maxh > 0 && h > c->maxh)
1283 h = c->maxh;
1284 }
1285 if(w <= 0 || h <= 0)
1286 return;
1287 /* TODO: offscreen appearance fixes */
1288 /*
1289 if(x > scr.sw)
1290 x = scr.sw - w - 2 * c->border;
1291 if(y > scr.sh)
1292 y = scr.sh - h - 2 * c->border;
1293 if(x + w + 2 * c->border < scr.sx)
1294 x = scr.sx;
1295 if(y + h + 2 * c->border < scr.sy)
1296 y = scr.sy;
1297 */
1298 if(c->x != x || c->y != y || c->w != w || c->h != h) {
1299 c->x = wc.x = x;
1300 c->y = wc.y = y;
1301 c->w = wc.width = w;
1302 c->h = wc.height = h;
1303 wc.border_width = c->border;
1304 XConfigureWindow(dpy, c->win, CWX | CWY | CWWidth | CWHeight | CWBorderWidth, &wc);
1305 configure(c);
1306 XSync(dpy, False);
1307 }
1308 }
1309
1310 void
1311 resizemouse(Client *c) {
1312 int ocx, ocy;
1313 int nw, nh;
1314 XEvent ev;
1315
1316 ocx = c->x;
1317 ocy = c->y;
1318 if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
1319 None, cursor[CurResize], CurrentTime) != GrabSuccess)
1320 return;
1321 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->border - 1, c->h + c->border - 1);
1322 for(;;) {
1323 XMaskEvent(dpy, MOUSEMASK | ExposureMask | SubstructureRedirectMask , &ev);
1324 switch(ev.type) {
1325 case ButtonRelease:
1326 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0,
1327 c->w + c->border - 1, c->h + c->border - 1);
1328 XUngrabPointer(dpy, CurrentTime);
1329 while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
1330 return;
1331 case ConfigureRequest:
1332 case Expose:
1333 case MapRequest:
1334 handler[ev.type](&ev);
1335 break;
1336 case MotionNotify:
1337 XSync(dpy, False);
1338 if((nw = ev.xmotion.x - ocx - 2 * c->border + 1) <= 0)
1339 nw = 1;
1340 if((nh = ev.xmotion.y - ocy - 2 * c->border + 1) <= 0)
1341 nh = 1;
1342 resize(c, c->x, c->y, nw, nh, True);
1343 break;
1344 }
1345 }
1346 }
1347
1348 void
1349 restack(void) {
1350 Client *c;
1351 XEvent ev;
1352 XWindowChanges wc;
1353 int s;
1354
1355 drawbar();
1356 if(!sel)
1357 return;
1358 if(sel->isfloating || (monitors[selmonitor].layout->arrange == floating))
1359 XRaiseWindow(dpy, sel->win);
1360 if(monitors[selmonitor].layout->arrange != floating) {
1361 wc.stack_mode = Below;
1362 wc.sibling = monitors[selmonitor].barwin;
1363 if(!sel->isfloating) {
1364 XConfigureWindow(dpy, sel->win, CWSibling | CWStackMode, &wc);
1365 wc.sibling = sel->win;
1366 }
1367 for(s = 0; s < mcount; s++) {
1368 for(c = nexttiled(clients, &monitors[s]); c; c = nexttiled(c->next, &monitors[s])) {
1369 if(c == sel)
1370 continue;
1371 XConfigureWindow(dpy, c->win, CWSibling | CWStackMode, &wc);
1372 wc.sibling = c->win;
1373 }
1374 }
1375 }
1376 XSync(dpy, False);
1377 while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
1378 }
1379
1380 void
1381 run(void) {
1382 char *p;
1383 char buf[sizeof stext];
1384 fd_set rd;
1385 int r, xfd;
1386 unsigned int len, offset;
1387 XEvent ev;
1388
1389 /* main event loop, also reads status text from stdin */
1390 XSync(dpy, False);
1391 xfd = ConnectionNumber(dpy);
1392 readin = True;
1393 offset = 0;
1394 len = sizeof stext - 1;
1395 buf[len] = stext[len] = '\0'; /* 0-terminator is never touched */
1396 while(running) {
1397 FD_ZERO(&rd);
1398 if(readin)
1399 FD_SET(STDIN_FILENO, &rd);
1400 FD_SET(xfd, &rd);
1401 if(select(xfd + 1, &rd, NULL, NULL, NULL) == -1) {
1402 if(errno == EINTR)
1403 continue;
1404 eprint("select failed\n");
1405 }
1406 if(FD_ISSET(STDIN_FILENO, &rd)) {
1407 switch((r = read(STDIN_FILENO, buf + offset, len - offset))) {
1408 case -1:
1409 strncpy(stext, strerror(errno), len);
1410 readin = False;
1411 break;
1412 case 0:
1413 strncpy(stext, "EOF", 4);
1414 readin = False;
1415 break;
1416 default:
1417 for(p = buf + offset; r > 0; p++, r--, offset++)
1418 if(*p == '\n' || *p == '\0') {
1419 *p = '\0';
1420 strncpy(stext, buf, len);
1421 p += r - 1; /* p is buf + offset + r - 1 */
1422 for(r = 0; *(p - r) && *(p - r) != '\n'; r++);
1423 offset = r;
1424 if(r)
1425 memmove(buf, p - r + 1, r);
1426 break;
1427 }
1428 break;
1429 }
1430 drawbar();
1431 }
1432 while(XPending(dpy)) {
1433 XNextEvent(dpy, &ev);
1434 if(handler[ev.type])
1435 (handler[ev.type])(&ev); /* call handler */
1436 }
1437 }
1438 }
1439
1440 void
1441 scan(void) {
1442 unsigned int i, num;
1443 Window *wins, d1, d2;
1444 XWindowAttributes wa;
1445
1446 wins = NULL;
1447 if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
1448 for(i = 0; i < num; i++) {
1449 if(!XGetWindowAttributes(dpy, wins[i], &wa)
1450 || wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
1451 continue;
1452 if(wa.map_state == IsViewable || getstate(wins[i]) == IconicState)
1453 manage(wins[i], &wa);
1454 }
1455 for(i = 0; i < num; i++) { /* now the transients */
1456 if(!XGetWindowAttributes(dpy, wins[i], &wa))
1457 continue;
1458 if(XGetTransientForHint(dpy, wins[i], &d1)
1459 && (wa.map_state == IsViewable || getstate(wins[i]) == IconicState))
1460 manage(wins[i], &wa);
1461 }
1462 }
1463 if(wins)
1464 XFree(wins);
1465 }
1466
1467 void
1468 setclientstate(Client *c, long state) {
1469 long data[] = {state, None};
1470
1471 XChangeProperty(dpy, c->win, wmatom[WMState], wmatom[WMState], 32,
1472 PropModeReplace, (unsigned char *)data, 2);
1473 }
1474
1475 void
1476 setlayout(const char *arg) {
1477 unsigned int i;
1478 Monitor *m = &monitors[monitorat(-1, -1)];
1479
1480 if(!arg) {
1481 m->layout++;
1482 if(m->layout == &layouts[LENGTH(layouts)])
1483 m->layout = &layouts[0];
1484 }
1485 else {
1486 for(i = 0; i < LENGTH(layouts); i++)
1487 if(!strcmp(arg, layouts[i].symbol))
1488 break;
1489 if(i == LENGTH(layouts))
1490 return;
1491 m->layout = &layouts[i];
1492 }
1493 if(sel)
1494 arrange();
1495 else
1496 drawbar();
1497 }
1498
1499 void
1500 setmwfact(const char *arg) {
1501 double delta;
1502
1503 Monitor *m = &monitors[monitorat(-1, -1)];
1504
1505 if(!domwfact)
1506 return;
1507 /* arg handling, manipulate mwfact */
1508 if(arg == NULL)
1509 m->mwfact = MWFACT;
1510 else if(sscanf(arg, "%lf", &delta) == 1) {
1511 if(arg[0] == '+' || arg[0] == '-')
1512 m->mwfact += delta;
1513 else
1514 m->mwfact = delta;
1515 if(m->mwfact < 0.1)
1516 m->mwfact = 0.1;
1517 else if(m->mwfact > 0.9)
1518 m->mwfact = 0.9;
1519 }
1520 arrange();
1521 }
1522
1523 void
1524 setup(void) {
1525 unsigned int i, j, k;
1526 XModifierKeymap *modmap;
1527 XSetWindowAttributes wa;
1528 int s = 1;
1529 GC g;
1530 XineramaScreenInfo *info = NULL;
1531
1532 /* init atoms */
1533 wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
1534 wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
1535 wmatom[WMName] = XInternAtom(dpy, "WM_NAME", False);
1536 wmatom[WMState] = XInternAtom(dpy, "WM_STATE", False);
1537 netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
1538 netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
1539 XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
1540 PropModeReplace, (unsigned char *) netatom, NetLast);
1541
1542 /* init cursors */
1543 cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
1544 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
1545 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
1546
1547
1548 /* init modifier map */
1549 modmap = XGetModifierMapping(dpy);
1550 for(i = 0; i < 8; i++)
1551 for(j = 0; j < modmap->max_keypermod; j++) {
1552 if(modmap->modifiermap[i * modmap->max_keypermod + j]
1553 == XKeysymToKeycode(dpy, XK_Num_Lock))
1554 numlockmask = (1 << i);
1555 }
1556 XFreeModifiermap(modmap);
1557
1558 /* select for events */
1559 wa.event_mask = SubstructureRedirectMask | SubstructureNotifyMask
1560 | EnterWindowMask | LeaveWindowMask | StructureNotifyMask;
1561 wa.cursor = cursor[CurNormal];
1562 XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);
1563 XSelectInput(dpy, root, wa.event_mask);
1564
1565 /* grab keys */
1566 grabkeys();
1567
1568 /* init tags */
1569 compileregs();
1570
1571 if (XineramaIsActive(dpy)) {
1572 info = XineramaQueryScreens(dpy, &s);
1573 }
1574
1575 monitors = emallocz(s*sizeof(Monitor));
1576 mcount = s;
1577
1578 for(i = 0; i < s; i++) {
1579 /* init geometry */
1580 if (mcount != 1) {
1581 monitors[i].sx = info[i].x_org;
1582 monitors[i].sy = info[i].y_org;
1583 monitors[i].sw = info[i].width;
1584 monitors[i].sh = info[i].height;
1585 }
1586 else {
1587 monitors[i].sx = 0;
1588 monitors[i].sy = 0;
1589 monitors[i].sw = DisplayWidth(dpy, screen);
1590 monitors[i].sh = DisplayHeight(dpy, screen);
1591 }
1592
1593 monitors[i].id = i;
1594 monitors[i].seltags = emallocz(sizeof initags);
1595 monitors[i].prevtags = emallocz(sizeof initags);
1596
1597 memcpy(monitors[i].seltags, initags, sizeof initags);
1598 memcpy(monitors[i].prevtags, initags, sizeof initags);
1599
1600 /* init appearance */
1601 monitors[i].dc.norm[ColBorder] = getcolor(NORMBORDERCOLOR);
1602 monitors[i].dc.norm[ColBG] = getcolor(NORMBGCOLOR);
1603 monitors[i].dc.norm[ColFG] = getcolor(NORMFGCOLOR);
1604 monitors[i].dc.sel[ColBorder] = getcolor(SELBORDERCOLOR);
1605 monitors[i].dc.sel[ColBG] = getcolor(SELBGCOLOR);
1606 monitors[i].dc.sel[ColFG] = getcolor(SELFGCOLOR);
1607 initfont(&(monitors[i]), FONT);
1608 monitors[i].dc.h = bh = monitors[i].dc.font.height + 2;
1609
1610 /* init layouts */
1611 monitors[i].mwfact = MWFACT;
1612 monitors[i].layout = &layouts[0];
1613 for(blw = k = 0; k < LENGTH(layouts); k++) {
1614 j = textw(&monitors[i], layouts[k].symbol);
1615 if(j > blw)
1616 blw = j;
1617 }
1618
1619 bpos = BARPOS;
1620 wa.override_redirect = 1;
1621 wa.background_pixmap = ParentRelative;
1622 wa.event_mask = ButtonPressMask | ExposureMask;
1623
1624 /* init bars */
1625 monitors[i].barwin = XCreateWindow(dpy, root, monitors[i].sx, monitors[i].sy, monitors[i].sw, bh, 0,
1626 DefaultDepth(dpy, screen), CopyFromParent, DefaultVisual(dpy, screen),
1627 CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
1628 XDefineCursor(dpy, monitors[i].barwin, cursor[CurNormal]);
1629 updatebarpos(&monitors[i]);
1630 XMapRaised(dpy, monitors[i].barwin);
1631 strcpy(stext, "dwm-"VERSION);
1632 monitors[i].dc.drawable = XCreatePixmap(dpy, root, monitors[i].sw, bh, DefaultDepth(dpy, screen));
1633 g = XCreateGC(dpy, root, 0, 0);
1634 monitors[i].dc.gc = XCreateGC(dpy, root, 0, 0);
1635 XSetLineAttributes(dpy, monitors[i].dc.gc, 1, LineSolid, CapButt, JoinMiter);
1636 if(!monitors[i].dc.font.set)
1637 XSetFont(dpy, monitors[i].dc.gc, monitors[i].dc.font.xfont->fid);
1638 }
1639 }
1640
1641 void
1642 spawn(const char *arg) {
1643 static char *shell = NULL;
1644
1645 if(!shell && !(shell = getenv("SHELL")))
1646 shell = "/bin/sh";
1647 if(!arg)
1648 return;
1649 /* The double-fork construct avoids zombie processes and keeps the code
1650 * clean from stupid signal handlers. */
1651 if(fork() == 0) {
1652 if(fork() == 0) {
1653 if(dpy)
1654 close(ConnectionNumber(dpy));
1655 setsid();
1656 execl(shell, shell, "-c", arg, (char *)NULL);
1657 fprintf(stderr, "dwm: execl '%s -c %s'", shell, arg);
1658 perror(" failed");
1659 }
1660 exit(0);
1661 }
1662 wait(0);
1663 }
1664
1665 void
1666 tag(const char *arg) {
1667 unsigned int i;
1668
1669 if(!sel)
1670 return;
1671 for(i = 0; i < LENGTH(tags); i++)
1672 sel->tags[i] = (NULL == arg);
1673 sel->tags[idxoftag(arg)] = True;
1674 arrange();
1675 }
1676
1677 unsigned int
1678 textnw(Monitor *m, const char *text, unsigned int len) {
1679 XRectangle r;
1680
1681 if(m->dc.font.set) {
1682 XmbTextExtents(m->dc.font.set, text, len, NULL, &r);
1683 return r.width;
1684 }
1685 return XTextWidth(m->dc.font.xfont, text, len);
1686 }
1687
1688 unsigned int
1689 textw(Monitor *m, const char *text) {
1690 return textnw(m, text, strlen(text)) + m->dc.font.height;
1691 }
1692
1693 void
1694 tile(void) {
1695 unsigned int i, n, nx, ny, nw, nh, mw, th;
1696 int s;
1697 Client *c, *mc;
1698
1699 domwfact = dozoom = True;
1700
1701 nw = 0; /* gcc stupidity requires this */
1702
1703 for (s = 0; s < mcount; s++) {
1704 Monitor *m = &monitors[s];
1705
1706 for(n = 0, c = nexttiled(clients, m); c; c = nexttiled(c->next, m))
1707 n++;
1708
1709 for(i = 0, c = mc = nexttiled(clients, m); c; c = nexttiled(c->next, m)) {
1710 /* window geoms */
1711 mw = (n == 1) ? m->waw : m->mwfact * m->waw;
1712 th = (n > 1) ? m->wah / (n - 1) : 0;
1713 if(n > 1 && th < bh)
1714 th = m->wah;
1715 if(i == 0) { /* master */
1716 nx = m->wax;
1717 ny = m->way;
1718 nw = mw - 2 * c->border;
1719 nh = m->wah - 2 * c->border;
1720 }
1721 else { /* tile window */
1722 if(i == 1) {
1723 ny = m->way;
1724 nx += mc->w + 2 * mc->border;
1725 nw = m->waw - mw - 2 * c->border;
1726 }
1727 if(i + 1 == n) /* remainder */
1728 nh = (m->way + m->wah) - ny - 2 * c->border;
1729 else
1730 nh = th - 2 * c->border;
1731 }
1732 resize(c, nx, ny, nw, nh, RESIZEHINTS);
1733 if((RESIZEHINTS) && ((c->h < bh) || (c->h > nh) || (c->w < bh) || (c->w > nw)))
1734 /* client doesn't accept size constraints */
1735 resize(c, nx, ny, nw, nh, False);
1736 if(n > 1 && th != m->wah)
1737 ny = c->y + c->h + 2 * c->border;
1738
1739 i++;
1740 }
1741 }
1742 }
1743 void
1744 togglebar(const char *arg) {
1745 if(bpos == BarOff)
1746 bpos = (BARPOS == BarOff) ? BarTop : BARPOS;
1747 else
1748 bpos = BarOff;
1749 updatebarpos(&monitors[monitorat(-1,-1)]);
1750 arrange();
1751 }
1752
1753 void
1754 togglefloating(const char *arg) {
1755 if(!sel)
1756 return;
1757 sel->isfloating = !sel->isfloating;
1758 if(sel->isfloating)
1759 resize(sel, sel->x, sel->y, sel->w, sel->h, True);
1760 arrange();
1761 }
1762
1763 void
1764 toggletag(const char *arg) {
1765 unsigned int i, j;
1766
1767 if(!sel)
1768 return;
1769 i = idxoftag(arg);
1770 sel->tags[i] = !sel->tags[i];
1771 for(j = 0; j < LENGTH(tags) && !sel->tags[j]; j++);
1772 if(j == LENGTH(tags))
1773 sel->tags[i] = True; /* at least one tag must be enabled */
1774 arrange();
1775 }
1776
1777 void
1778 toggleview(const char *arg) {
1779 unsigned int i, j;
1780
1781 Monitor *m = &monitors[monitorat(-1, -1)];
1782
1783 i = idxoftag(arg);
1784 m->seltags[i] = !m->seltags[i];
1785 for(j = 0; j < LENGTH(tags) && !m->seltags[j]; j++);
1786 if(j == LENGTH(tags))
1787 m->seltags[i] = True; /* at least one tag must be viewed */
1788 arrange();
1789 }
1790
1791 void
1792 unban(Client *c) {
1793 if(!c->isbanned)
1794 return;
1795 XMoveWindow(dpy, c->win, c->x, c->y);
1796 c->isbanned = False;
1797 }
1798
1799 void
1800 unmanage(Client *c) {
1801 XWindowChanges wc;
1802
1803 wc.border_width = c->oldborder;
1804 /* The server grab construct avoids race conditions. */
1805 XGrabServer(dpy);
1806 XSetErrorHandler(xerrordummy);
1807 XConfigureWindow(dpy, c->win, CWBorderWidth, &wc); /* restore border */
1808 detach(c);
1809 detachstack(c);
1810 if(sel == c)
1811 focus(NULL);
1812 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
1813 setclientstate(c, WithdrawnState);
1814 free(c->tags);
1815 free(c);
1816 XSync(dpy, False);
1817 XSetErrorHandler(xerror);
1818 XUngrabServer(dpy);
1819 arrange();
1820 }
1821
1822 void
1823 unmapnotify(XEvent *e) {
1824 Client *c;
1825 XUnmapEvent *ev = &e->xunmap;
1826
1827 if((c = getclient(ev->window)))
1828 unmanage(c);
1829 }
1830
1831 void
1832 updatebarpos(Monitor *s) {
1833 XEvent ev;
1834
1835 s->wax = s->sx;
1836 s->way = s->sy;
1837 s->wah = s->sh;
1838 s->waw = s->sw;
1839 switch(bpos) {
1840 default:
1841 s->wah -= bh;
1842 s->way += bh;
1843 XMoveWindow(dpy, s->barwin, s->sx, s->sy);
1844 break;
1845 case BarBot:
1846 s->wah -= bh;
1847 XMoveWindow(dpy, s->barwin, s->sx, s->sy + s->wah);
1848 break;
1849 case BarOff:
1850 XMoveWindow(dpy, s->barwin, s->sx, s->sy - bh);
1851 break;
1852 }
1853 XSync(dpy, False);
1854 while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
1855 }
1856
1857 void
1858 updatesizehints(Client *c) {
1859 long msize;
1860 XSizeHints size;
1861
1862 if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
1863 size.flags = PSize;
1864 c->flags = size.flags;
1865 if(c->flags & PBaseSize) {
1866 c->basew = size.base_width;
1867 c->baseh = size.base_height;
1868 }
1869 else if(c->flags & PMinSize) {
1870 c->basew = size.min_width;
1871 c->baseh = size.min_height;
1872 }
1873 else
1874 c->basew = c->baseh = 0;
1875 if(c->flags & PResizeInc) {
1876 c->incw = size.width_inc;
1877 c->inch = size.height_inc;
1878 }
1879 else
1880 c->incw = c->inch = 0;
1881 if(c->flags & PMaxSize) {
1882 c->maxw = size.max_width;
1883 c->maxh = size.max_height;
1884 }
1885 else
1886 c->maxw = c->maxh = 0;
1887 if(c->flags & PMinSize) {
1888 c->minw = size.min_width;
1889 c->minh = size.min_height;
1890 }
1891 else if(c->flags & PBaseSize) {
1892 c->minw = size.base_width;
1893 c->minh = size.base_height;
1894 }
1895 else
1896 c->minw = c->minh = 0;
1897 if(c->flags & PAspect) {
1898 c->minax = size.min_aspect.x;
1899 c->maxax = size.max_aspect.x;
1900 c->minay = size.min_aspect.y;
1901 c->maxay = size.max_aspect.y;
1902 }
1903 else
1904 c->minax = c->maxax = c->minay = c->maxay = 0;
1905 c->isfixed = (c->maxw && c->minw && c->maxh && c->minh
1906 && c->maxw == c->minw && c->maxh == c->minh);
1907 }
1908
1909 void
1910 updatetitle(Client *c) {
1911 if(!gettextprop(c->win, netatom[NetWMName], c->name, sizeof c->name))
1912 gettextprop(c->win, wmatom[WMName], c->name, sizeof c->name);
1913 }
1914
1915 /* There's no way to check accesses to destroyed windows, thus those cases are
1916 * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
1917 * default error handler, which may call exit. */
1918 int
1919 xerror(Display *dpy, XErrorEvent *ee) {
1920 if(ee->error_code == BadWindow
1921 || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
1922 || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
1923 || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
1924 || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
1925 || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
1926 || (ee->request_code == X_GrabKey && ee->error_code == BadAccess)
1927 || (ee->request_code == X_CopyArea && ee->error_code == BadDrawable))
1928 return 0;
1929 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
1930 ee->request_code, ee->error_code);
1931 return xerrorxlib(dpy, ee); /* may call exit */
1932 }
1933
1934 int
1935 xerrordummy(Display *dsply, XErrorEvent *ee) {
1936 return 0;
1937 }
1938
1939 /* Startup Error handler to check if another window manager
1940 * is already running. */
1941 int
1942 xerrorstart(Display *dsply, XErrorEvent *ee) {
1943 otherwm = True;
1944 return -1;
1945 }
1946
1947 void
1948 view(const char *arg) {
1949 unsigned int i;
1950
1951 Monitor *m = &monitors[monitorat(-1, -1)];
1952
1953 memcpy(m->prevtags, m->seltags, sizeof initags);
1954 for(i = 0; i < LENGTH(tags); i++)
1955 m->seltags[i] = (NULL == arg);
1956 m->seltags[idxoftag(arg)] = True;
1957 arrange();
1958 }
1959
1960 void
1961 viewprevtag(const char *arg) {
1962 static Bool tmp[LENGTH(tags)];
1963
1964 Monitor *m = &monitors[monitorat(-1, -1)];
1965
1966 memcpy(tmp, m->seltags, sizeof initags);
1967 memcpy(m->seltags, m->prevtags, sizeof initags);
1968 memcpy(m->prevtags, tmp, sizeof initags);
1969 arrange();
1970 }
1971
1972 void
1973 zoom(const char *arg) {
1974 Client *c;
1975
1976 if(!sel || !dozoom || sel->isfloating)
1977 return;
1978 if((c = sel) == nexttiled(clients, &monitors[c->monitor]))
1979 if(!(c = nexttiled(c->next, &monitors[c->monitor])))
1980 return;
1981 detach(c);
1982 attach(c);
1983 focus(c);
1984 arrange();
1985 }
1986
1987 int
1988 monitorat(int x, int y) {
1989 int i;
1990
1991 if(!XineramaIsActive(dpy))
1992 return 0;
1993
1994 if (x < 0 || y < 0) {
1995 Window win;
1996 unsigned int mask;
1997 XQueryPointer(dpy, root, &win, &win, &x, &y, &i, &i, &mask);
1998 }
1999
2000 for(i = 0; i < mcount; i++)
2001 if((x < 0 || (x >= monitors[i].sx && x < monitors[i].sx + monitors[i].sw))
2002 && (y < 0 || (y >= monitors[i].sy && y < monitors[i].sy + monitors[i].sh)))
2003 {
2004 return i;
2005 }
2006 return 0;
2007 }
2008
2009 void
2010 movetomonitor(const char *arg) {
2011 if (sel) {
2012 sel->monitor = arg ? atoi(arg) : (sel->monitor+1) % mcount;
2013
2014 memcpy(sel->tags, monitors[sel->monitor].seltags, sizeof initags);
2015 resize(sel, monitors[sel->monitor].wax, monitors[sel->monitor].way, sel->w, sel->h, True);
2016 arrange();
2017 }
2018 }
2019
2020 void
2021 selectmonitor(const char *arg) {
2022 Monitor *m = &monitors[arg ? atoi(arg) : (monitorat(-1, -1)+1) % mcount];
2023
2024 XWarpPointer(dpy, None, root, 0, 0, 0, 0, m->wax+m->waw/2, m->way+m->wah/2);
2025 focus(NULL);
2026 }
2027
2028
2029 int
2030 main(int argc, char *argv[]) {
2031 if(argc == 2 && !strcmp("-v", argv[1]))
2032 eprint("dwm-"VERSION", © 2006-2007 Anselm R. Garbe, Sander van Dijk, "
2033 "Jukka Salmi, Premysl Hruby, Szabolcs Nagy\n");
2034 else if(argc != 1)
2035 eprint("usage: dwm [-v]\n");
2036
2037 setlocale(LC_CTYPE, "");
2038 if(!(dpy = XOpenDisplay(0)))
2039 eprint("dwm: cannot open display\n");
2040 screen = DefaultScreen(dpy);
2041 root = RootWindow(dpy, screen);
2042
2043 checkotherwm();
2044 setup();
2045 drawbar();
2046 scan();
2047 run();
2048 cleanup();
2049
2050 XCloseDisplay(dpy);
2051 return 0;
2052 }