dwm.c (view raw)
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 */
56enum { BarTop, BarBot, BarOff }; /* bar position */
57enum { CurNormal, CurResize, CurMove, CurLast }; /* cursor */
58enum { ColBorder, ColFG, ColBG, ColLast }; /* color */
59enum { NetSupported, NetWMName, NetLast }; /* EWMH atoms */
60enum { WMProtocols, WMDelete, WMName, WMState, WMLast };/* default atoms */
61
62/* typedefs */
63typedef struct Client Client;
64struct 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
80typedef 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
95typedef struct {
96 unsigned long mod;
97 KeySym keysym;
98 void (*func)(const char *arg);
99 const char *arg;
100} Key;
101
102typedef struct {
103 const char *symbol;
104 void (*arrange)(void);
105} Layout;
106
107typedef struct {
108 const char *prop;
109 const char *tags;
110 Bool isfloating;
111 int monitor;
112} Rule;
113
114typedef struct {
115 regex_t *propregex;
116 regex_t *tagregex;
117} Regs;
118
119typedef 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 */
132void applyrules(Client *c);
133void arrange(void);
134void attach(Client *c);
135void attachstack(Client *c);
136void ban(Client *c);
137void buttonpress(XEvent *e);
138void checkotherwm(void);
139void cleanup(void);
140void compileregs(void);
141void configure(Client *c);
142void configurenotify(XEvent *e);
143void configurerequest(XEvent *e);
144void destroynotify(XEvent *e);
145void detach(Client *c);
146void detachstack(Client *c);
147void drawbar(void);
148void drawsquare(Monitor *, Bool filled, Bool empty, unsigned long col[ColLast]);
149void drawtext(Monitor *, const char *text, unsigned long col[ColLast], Bool invert);
150void *emallocz(unsigned int size);
151void enternotify(XEvent *e);
152void eprint(const char *errstr, ...);
153void expose(XEvent *e);
154void floating(void); /* default floating layout */
155void focus(Client *c);
156void focusin(XEvent *e);
157void focusnext(const char *arg);
158void focusprev(const char *arg);
159Client *getclient(Window w);
160unsigned long getcolor(const char *colstr, int screen);
161long getstate(Window w);
162Bool gettextprop(Window w, Atom atom, char *text, unsigned int size);
163void grabbuttons(Client *c, Bool focused);
164void grabkeys(void);
165unsigned int idxoftag(const char *tag);
166void initfont(Monitor*, const char *fontstr);
167Bool isoccupied(Monitor *m, unsigned int t);
168Bool isprotodel(Client *c);
169Bool isurgent(int monitor, unsigned int t);
170Bool isvisible(Client *c, int monitor);
171void keypress(XEvent *e);
172void killclient(const char *arg);
173void manage(Window w, XWindowAttributes *wa);
174void mappingnotify(XEvent *e);
175void maprequest(XEvent *e);
176void movemouse(Client *c);
177Client *nexttiled(Client *c, int monitor);
178void propertynotify(XEvent *e);
179void quit(const char *arg);
180void reapply(const char *arg);
181void resize(Client *c, int x, int y, int w, int h, Bool sizehints);
182void resizemouse(Client *c);
183void restack(void);
184void run(void);
185void scan(void);
186void setclientstate(Client *c, long state);
187void setlayout(const char *arg);
188void setmwfact(const char *arg);
189void setup(void);
190void spawn(const char *arg);
191void tag(const char *arg);
192unsigned int textnw(Monitor*, const char *text, unsigned int len);
193unsigned int textw(Monitor*, const char *text);
194void tile(void);
195void togglebar(const char *arg);
196void togglefloating(const char *arg);
197void toggletag(const char *arg);
198void toggleview(const char *arg);
199void unban(Client *c);
200void unmanage(Client *c);
201void unmapnotify(XEvent *e);
202void updatebarpos(Monitor *m);
203void updatesizehints(Client *c);
204void updatetitle(Client *c);
205void updatewmhints(Client *c);
206void view(const char *arg);
207void viewprevtag(const char *arg); /* views previous selected tags */
208int xerror(Display *dpy, XErrorEvent *ee);
209int xerrordummy(Display *dsply, XErrorEvent *ee);
210int xerrorstart(Display *dsply, XErrorEvent *ee);
211void zoom(const char *arg);
212int monitorat(void);
213void movetomonitor(const char *arg);
214void selectmonitor(const char *arg);
215
216/* variables */
217char stext[256];
218int mcount = 1;
219int (*xerrorxlib)(Display *, XErrorEvent *);
220unsigned int bh, bpos;
221unsigned int blw = 0;
222unsigned int numlockmask = 0;
223void (*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};
237Atom wmatom[WMLast], netatom[NetLast];
238Bool isxinerama = False;
239Bool domwfact = True;
240Bool dozoom = True;
241Bool otherwm, readin;
242Bool running = True;
243Client *clients = NULL;
244Client *sel = NULL;
245Client *stack = NULL;
246Cursor cursor[CurLast];
247Display *dpy;
248DC dc = {0};
249Regs *regs = NULL;
250Monitor *monitors;
251int 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 */
259void
260applyrules(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
298void
299arrange(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
313void
314attach(Client *c) {
315 if(clients)
316 clients->prev = c;
317 c->next = clients;
318 clients = c;
319}
320
321void
322attachstack(Client *c) {
323 c->snext = stack;
324 stack = c;
325}
326
327void
328ban(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
335void
336buttonpress(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 restack();
372 movemouse(c);
373 }
374 else if(ev->button == Button2) {
375 if((floating != m->layout->arrange) && c->isfloating)
376 togglefloating(NULL);
377 else
378 zoom(NULL);
379 }
380 else if(ev->button == Button3 && !c->isfixed) {
381 restack();
382 resizemouse(c);
383 }
384 }
385}
386
387void
388checkotherwm(void) {
389 otherwm = False;
390 XSetErrorHandler(xerrorstart);
391
392 /* this causes an error if some other window manager is running */
393 XSelectInput(dpy, DefaultRootWindow(dpy), SubstructureRedirectMask);
394 XSync(dpy, False);
395 if(otherwm)
396 eprint("dwm: another window manager is already running\n");
397 XSync(dpy, False);
398 XSetErrorHandler(NULL);
399 xerrorxlib = XSetErrorHandler(xerror);
400 XSync(dpy, False);
401}
402
403void
404cleanup(void) {
405 unsigned int i;
406 close(STDIN_FILENO);
407 while(stack) {
408 unban(stack);
409 unmanage(stack);
410 }
411 for(i = 0; i < mcount; i++) {
412 Monitor *m = &monitors[i];
413 if(m->dc.font.set)
414 XFreeFontSet(dpy, m->dc.font.set);
415 else
416 XFreeFont(dpy, m->dc.font.xfont);
417 XUngrabKey(dpy, AnyKey, AnyModifier, m->root);
418 XFreePixmap(dpy, m->dc.drawable);
419 XFreeGC(dpy, m->dc.gc);
420 XDestroyWindow(dpy, m->barwin);
421 XFreeCursor(dpy, cursor[CurNormal]);
422 XFreeCursor(dpy, cursor[CurResize]);
423 XFreeCursor(dpy, cursor[CurMove]);
424 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
425 XSync(dpy, False);
426 }
427}
428
429void
430compileregs(void) {
431 unsigned int i;
432 regex_t *reg;
433
434 if(regs)
435 return;
436 regs = emallocz(LENGTH(rules) * sizeof(Regs));
437 for(i = 0; i < LENGTH(rules); i++) {
438 if(rules[i].prop) {
439 reg = emallocz(sizeof(regex_t));
440 if(regcomp(reg, rules[i].prop, REG_EXTENDED))
441 free(reg);
442 else
443 regs[i].propregex = reg;
444 }
445 if(rules[i].tags) {
446 reg = emallocz(sizeof(regex_t));
447 if(regcomp(reg, rules[i].tags, REG_EXTENDED))
448 free(reg);
449 else
450 regs[i].tagregex = reg;
451 }
452 }
453}
454
455void
456configure(Client *c) {
457 XConfigureEvent ce;
458
459 ce.type = ConfigureNotify;
460 ce.display = dpy;
461 ce.event = c->win;
462 ce.window = c->win;
463 ce.x = c->x;
464 ce.y = c->y;
465 ce.width = c->w;
466 ce.height = c->h;
467 ce.border_width = c->border;
468 ce.above = None;
469 ce.override_redirect = False;
470 XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&ce);
471}
472
473void
474configurenotify(XEvent *e) {
475 XConfigureEvent *ev = &e->xconfigure;
476 Monitor *m = &monitors[selmonitor];
477
478 if(ev->window == m->root && (ev->width != m->sw || ev->height != m->sh)) {
479 m->sw = ev->width;
480 m->sh = ev->height;
481 XFreePixmap(dpy, dc.drawable);
482 dc.drawable = XCreatePixmap(dpy, m->root, m->sw, bh, DefaultDepth(dpy, m->screen));
483 XResizeWindow(dpy, m->barwin, m->sw, bh);
484 updatebarpos(m);
485 arrange();
486 }
487}
488
489void
490configurerequest(XEvent *e) {
491 Client *c;
492 XConfigureRequestEvent *ev = &e->xconfigurerequest;
493 XWindowChanges wc;
494
495 if((c = getclient(ev->window))) {
496 Monitor *m = &monitors[c->monitor];
497 if(ev->value_mask & CWBorderWidth)
498 c->border = ev->border_width;
499 if(c->isfixed || c->isfloating || (floating == m->layout->arrange)) {
500 if(ev->value_mask & CWX)
501 c->x = m->sx+ev->x;
502 if(ev->value_mask & CWY)
503 c->y = m->sy+ev->y;
504 if(ev->value_mask & CWWidth)
505 c->w = ev->width;
506 if(ev->value_mask & CWHeight)
507 c->h = ev->height;
508 if((c->x - m->sx + c->w) > m->sw && c->isfloating)
509 c->x = m->sx + (m->sw / 2 - c->w / 2); /* center in x direction */
510 if((c->y - m->sy + c->h) > m->sh && c->isfloating)
511 c->y = m->sy + (m->sh / 2 - c->h / 2); /* center in y direction */
512 if((ev->value_mask & (CWX | CWY))
513 && !(ev->value_mask & (CWWidth | CWHeight)))
514 configure(c);
515 if(isvisible(c, monitorat()))
516 XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
517 }
518 else
519 configure(c);
520 }
521 else {
522 wc.x = ev->x;
523 wc.y = ev->y;
524 wc.width = ev->width;
525 wc.height = ev->height;
526 wc.border_width = ev->border_width;
527 wc.sibling = ev->above;
528 wc.stack_mode = ev->detail;
529 XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
530 }
531 XSync(dpy, False);
532}
533
534void
535destroynotify(XEvent *e) {
536 Client *c;
537 XDestroyWindowEvent *ev = &e->xdestroywindow;
538
539 if((c = getclient(ev->window)))
540 unmanage(c);
541}
542
543void
544detach(Client *c) {
545 if(c->prev)
546 c->prev->next = c->next;
547 if(c->next)
548 c->next->prev = c->prev;
549 if(c == clients)
550 clients = c->next;
551 c->next = c->prev = NULL;
552}
553
554void
555detachstack(Client *c) {
556 Client **tc;
557
558 for(tc=&stack; *tc && *tc != c; tc=&(*tc)->snext);
559 *tc = c->snext;
560}
561
562void
563drawbar(void) {
564 int i, j, x;
565
566 for(i = 0; i < mcount; i++) {
567 Monitor *m = &monitors[i];
568 m->dc.x = 0;
569 for(j = 0; j < LENGTH(tags); j++) {
570 m->dc.w = textw(m, tags[j]);
571 if(m->seltags[j]) {
572 drawtext(m, tags[j], m->dc.sel, isurgent(i, j));
573 drawsquare(m, sel && sel->tags[j] && sel->monitor == selmonitor, isoccupied(m, j), m->dc.sel);
574 }
575 else {
576 drawtext(m, tags[j], m->dc.norm, isurgent(i, j));
577 drawsquare(m, sel && sel->tags[j] && sel->monitor == selmonitor, isoccupied(m, j), m->dc.norm);
578 }
579 m->dc.x += m->dc.w;
580 }
581 m->dc.w = blw;
582 drawtext(m, m->layout->symbol, m->dc.norm, False);
583 x = m->dc.x + m->dc.w;
584 m->dc.w = textw(m, stext);
585 m->dc.x = m->sw - m->dc.w;
586 if(m->dc.x < x) {
587 m->dc.x = x;
588 m->dc.w = m->sw - x;
589 }
590 drawtext(m, stext, m->dc.norm, False);
591 if((m->dc.w = m->dc.x - x) > bh) {
592 m->dc.x = x;
593 if(sel && sel->monitor == selmonitor) {
594 drawtext(m, sel->name, m->dc.sel, False);
595 drawsquare(m, False, sel->isfloating, m->dc.sel);
596 }
597 else
598 drawtext(m, NULL, m->dc.norm, False);
599 }
600 XCopyArea(dpy, m->dc.drawable, m->barwin, m->dc.gc, 0, 0, m->sw, bh, 0, 0);
601 XSync(dpy, False);
602 }
603}
604
605void
606drawsquare(Monitor *m, Bool filled, Bool empty, unsigned long col[ColLast]) {
607 int x;
608 XGCValues gcv;
609 XRectangle r = { m->dc.x, m->dc.y, m->dc.w, m->dc.h };
610
611 gcv.foreground = col[ColFG];
612 XChangeGC(dpy, m->dc.gc, GCForeground, &gcv);
613 x = (m->dc.font.ascent + m->dc.font.descent + 2) / 4;
614 r.x = m->dc.x + 1;
615 r.y = m->dc.y + 1;
616 if(filled) {
617 r.width = r.height = x + 1;
618 XFillRectangles(dpy, m->dc.drawable, m->dc.gc, &r, 1);
619 }
620 else if(empty) {
621 r.width = r.height = x;
622 XDrawRectangles(dpy, m->dc.drawable, m->dc.gc, &r, 1);
623 }
624}
625
626void
627drawtext(Monitor *m, const char *text, unsigned long col[ColLast], Bool invert) {
628 int x, y, w, h;
629 static char buf[256];
630 unsigned int len, olen;
631 XRectangle r = { m->dc.x, m->dc.y, m->dc.w, m->dc.h };
632
633 XSetForeground(dpy, m->dc.gc, col[invert ? ColFG : ColBG]);
634 XFillRectangles(dpy, m->dc.drawable, m->dc.gc, &r, 1);
635 if(!text)
636 return;
637 w = 0;
638 olen = len = strlen(text);
639 if(len >= sizeof buf)
640 len = sizeof buf - 1;
641 memcpy(buf, text, len);
642 buf[len] = 0;
643 h = m->dc.font.ascent + m->dc.font.descent;
644 y = m->dc.y + (m->dc.h / 2) - (h / 2) + m->dc.font.ascent;
645 x = m->dc.x + (h / 2);
646 /* shorten text if necessary */
647 while(len && (w = textnw(m, buf, len)) > m->dc.w - h)
648 buf[--len] = 0;
649 if(len < olen) {
650 if(len > 1)
651 buf[len - 1] = '.';
652 if(len > 2)
653 buf[len - 2] = '.';
654 if(len > 3)
655 buf[len - 3] = '.';
656 }
657 if(w > m->dc.w)
658 return; /* too long */
659 XSetForeground(dpy, m->dc.gc, col[invert ? ColBG : ColFG]);
660 if(m->dc.font.set)
661 XmbDrawString(dpy, m->dc.drawable, m->dc.font.set, m->dc.gc, x, y, buf, len);
662 else
663 XDrawString(dpy, m->dc.drawable, m->dc.gc, x, y, buf, len);
664}
665
666void *
667emallocz(unsigned int size) {
668 void *res = calloc(1, size);
669
670 if(!res)
671 eprint("fatal: could not malloc() %u bytes\n", size);
672 return res;
673}
674
675void
676enternotify(XEvent *e) {
677 Client *c;
678 XCrossingEvent *ev = &e->xcrossing;
679
680 if(ev->mode != NotifyNormal || ev->detail == NotifyInferior);
681 //return;
682 if((c = getclient(ev->window)))
683 focus(c);
684 else {
685 selmonitor = monitorat();
686 fprintf(stderr, "updating selmonitor %d\n", selmonitor);
687 focus(NULL);
688 }
689}
690
691void
692eprint(const char *errstr, ...) {
693 va_list ap;
694
695 va_start(ap, errstr);
696 vfprintf(stderr, errstr, ap);
697 va_end(ap);
698 exit(EXIT_FAILURE);
699}
700
701void
702expose(XEvent *e) {
703 XExposeEvent *ev = &e->xexpose;
704
705 if(ev->count == 0) {
706 if(ev->window == monitors[selmonitor].barwin)
707 drawbar();
708 }
709}
710
711void
712floating(void) { /* default floating layout */
713 Client *c;
714
715 domwfact = dozoom = False;
716 for(c = clients; c; c = c->next)
717 if(isvisible(c, selmonitor))
718 resize(c, c->x, c->y, c->w, c->h, True);
719}
720
721void
722focus(Client *c) {
723 Monitor *m;
724
725 if(c)
726 selmonitor = c->monitor;
727 m = &monitors[selmonitor];
728 if(!c || (c && !isvisible(c, selmonitor)))
729 for(c = stack; c && !isvisible(c, c->monitor); c = c->snext);
730 if(sel && sel != c) {
731 grabbuttons(sel, False);
732 XSetWindowBorder(dpy, sel->win, monitors[sel->monitor].dc.norm[ColBorder]);
733 }
734 if(c) {
735 detachstack(c);
736 attachstack(c);
737 grabbuttons(c, True);
738 }
739 sel = c;
740 drawbar();
741 if(c) {
742 XSetWindowBorder(dpy, c->win, m->dc.sel[ColBorder]);
743 XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
744 selmonitor = c->monitor;
745 }
746 else {
747 XSetInputFocus(dpy, m->root, RevertToPointerRoot, CurrentTime);
748 }
749}
750
751void
752focusin(XEvent *e) { /* there are some broken focus acquiring clients */
753 XFocusChangeEvent *ev = &e->xfocus;
754
755 if(sel && ev->window != sel->win)
756 XSetInputFocus(dpy, sel->win, RevertToPointerRoot, CurrentTime);
757}
758
759void
760focusnext(const char *arg) {
761 Client *c;
762
763 if(!sel)
764 return;
765 for(c = sel->next; c && !isvisible(c, selmonitor); c = c->next);
766 if(!c)
767 for(c = clients; c && !isvisible(c, selmonitor); c = c->next);
768 if(c) {
769 focus(c);
770 restack();
771 }
772}
773
774void
775focusprev(const char *arg) {
776 Client *c;
777
778 if(!sel)
779 return;
780 for(c = sel->prev; c && !isvisible(c, selmonitor); c = c->prev);
781 if(!c) {
782 for(c = clients; c && c->next; c = c->next);
783 for(; c && !isvisible(c, selmonitor); c = c->prev);
784 }
785 if(c) {
786 focus(c);
787 restack();
788 }
789}
790
791Client *
792getclient(Window w) {
793 Client *c;
794
795 for(c = clients; c && c->win != w; c = c->next);
796 return c;
797}
798
799unsigned long
800getcolor(const char *colstr, int screen) {
801 Colormap cmap = DefaultColormap(dpy, screen);
802 XColor color;
803
804 if(!XAllocNamedColor(dpy, cmap, colstr, &color, &color))
805 eprint("error, cannot allocate color '%s'\n", colstr);
806 return color.pixel;
807}
808
809long
810getstate(Window w) {
811 int format, status;
812 long result = -1;
813 unsigned char *p = NULL;
814 unsigned long n, extra;
815 Atom real;
816
817 status = XGetWindowProperty(dpy, w, wmatom[WMState], 0L, 2L, False, wmatom[WMState],
818 &real, &format, &n, &extra, (unsigned char **)&p);
819 if(status != Success)
820 return -1;
821 if(n != 0)
822 result = *p;
823 XFree(p);
824 return result;
825}
826
827Bool
828gettextprop(Window w, Atom atom, char *text, unsigned int size) {
829 char **list = NULL;
830 int n;
831 XTextProperty name;
832
833 if(!text || size == 0)
834 return False;
835 text[0] = '\0';
836 XGetTextProperty(dpy, w, &name, atom);
837 if(!name.nitems)
838 return False;
839 if(name.encoding == XA_STRING)
840 strncpy(text, (char *)name.value, size - 1);
841 else {
842 if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
843 && n > 0 && *list) {
844 strncpy(text, *list, size - 1);
845 XFreeStringList(list);
846 }
847 }
848 text[size - 1] = '\0';
849 XFree(name.value);
850 return True;
851}
852
853void
854grabbuttons(Client *c, Bool focused) {
855 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
856
857 if(focused) {
858 XGrabButton(dpy, Button1, MODKEY, c->win, False, BUTTONMASK,
859 GrabModeAsync, GrabModeSync, None, None);
860 XGrabButton(dpy, Button1, MODKEY | LockMask, c->win, False, BUTTONMASK,
861 GrabModeAsync, GrabModeSync, None, None);
862 XGrabButton(dpy, Button1, MODKEY | numlockmask, c->win, False, BUTTONMASK,
863 GrabModeAsync, GrabModeSync, None, None);
864 XGrabButton(dpy, Button1, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
865 GrabModeAsync, GrabModeSync, None, None);
866
867 XGrabButton(dpy, Button2, MODKEY, c->win, False, BUTTONMASK,
868 GrabModeAsync, GrabModeSync, None, None);
869 XGrabButton(dpy, Button2, MODKEY | LockMask, c->win, False, BUTTONMASK,
870 GrabModeAsync, GrabModeSync, None, None);
871 XGrabButton(dpy, Button2, MODKEY | numlockmask, c->win, False, BUTTONMASK,
872 GrabModeAsync, GrabModeSync, None, None);
873 XGrabButton(dpy, Button2, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
874 GrabModeAsync, GrabModeSync, None, None);
875
876 XGrabButton(dpy, Button3, MODKEY, c->win, False, BUTTONMASK,
877 GrabModeAsync, GrabModeSync, None, None);
878 XGrabButton(dpy, Button3, MODKEY | LockMask, c->win, False, BUTTONMASK,
879 GrabModeAsync, GrabModeSync, None, None);
880 XGrabButton(dpy, Button3, MODKEY | numlockmask, c->win, False, BUTTONMASK,
881 GrabModeAsync, GrabModeSync, None, None);
882 XGrabButton(dpy, Button3, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
883 GrabModeAsync, GrabModeSync, None, None);
884 }
885 else
886 XGrabButton(dpy, AnyButton, AnyModifier, c->win, False, BUTTONMASK,
887 GrabModeAsync, GrabModeSync, None, None);
888}
889
890void
891grabkeys(void) {
892 unsigned int i, j;
893 KeyCode code;
894 XModifierKeymap *modmap;
895
896 /* init modifier map */
897 modmap = XGetModifierMapping(dpy);
898 for(i = 0; i < 8; i++)
899 for(j = 0; j < modmap->max_keypermod; j++) {
900 if(modmap->modifiermap[i * modmap->max_keypermod + j] == XKeysymToKeycode(dpy, XK_Num_Lock))
901 numlockmask = (1 << i);
902 }
903 XFreeModifiermap(modmap);
904
905 for(i = 0; i < mcount; i++) {
906 Monitor *m = &monitors[i];
907 XUngrabKey(dpy, AnyKey, AnyModifier, m->root);
908 for(j = 0; j < LENGTH(keys); j++) {
909 code = XKeysymToKeycode(dpy, keys[j].keysym);
910 XGrabKey(dpy, code, keys[j].mod, m->root, True,
911 GrabModeAsync, GrabModeAsync);
912 XGrabKey(dpy, code, keys[j].mod | LockMask, m->root, True,
913 GrabModeAsync, GrabModeAsync);
914 XGrabKey(dpy, code, keys[j].mod | numlockmask, m->root, True,
915 GrabModeAsync, GrabModeAsync);
916 XGrabKey(dpy, code, keys[j].mod | numlockmask | LockMask, m->root, True,
917 GrabModeAsync, GrabModeAsync);
918 }
919 }
920}
921
922unsigned int
923idxoftag(const char *tag) {
924 unsigned int i;
925
926 for(i = 0; (i < LENGTH(tags)) && (tags[i] != tag); i++);
927 return (i < LENGTH(tags)) ? i : 0;
928}
929
930void
931initfont(Monitor *m, const char *fontstr) {
932 char *def, **missing;
933 int i, n;
934
935 missing = NULL;
936 if(m->dc.font.set)
937 XFreeFontSet(dpy, m->dc.font.set);
938 m->dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
939 if(missing) {
940 while(n--)
941 fprintf(stderr, "dwm: missing fontset: %s\n", missing[n]);
942 XFreeStringList(missing);
943 }
944 if(m->dc.font.set) {
945 XFontSetExtents *font_extents;
946 XFontStruct **xfonts;
947 char **font_names;
948 m->dc.font.ascent = m->dc.font.descent = 0;
949 font_extents = XExtentsOfFontSet(m->dc.font.set);
950 n = XFontsOfFontSet(m->dc.font.set, &xfonts, &font_names);
951 for(i = 0, m->dc.font.ascent = 0, m->dc.font.descent = 0; i < n; i++) {
952 if(m->dc.font.ascent < (*xfonts)->ascent)
953 m->dc.font.ascent = (*xfonts)->ascent;
954 if(m->dc.font.descent < (*xfonts)->descent)
955 m->dc.font.descent = (*xfonts)->descent;
956 xfonts++;
957 }
958 }
959 else {
960 if(m->dc.font.xfont)
961 XFreeFont(dpy, m->dc.font.xfont);
962 m->dc.font.xfont = NULL;
963 if(!(m->dc.font.xfont = XLoadQueryFont(dpy, fontstr))
964 && !(m->dc.font.xfont = XLoadQueryFont(dpy, "fixed")))
965 eprint("error, cannot load font: '%s'\n", fontstr);
966 m->dc.font.ascent = m->dc.font.xfont->ascent;
967 m->dc.font.descent = m->dc.font.xfont->descent;
968 }
969 m->dc.font.height = m->dc.font.ascent + m->dc.font.descent;
970}
971
972Bool
973isoccupied(Monitor *m, unsigned int t) {
974 Client *c;
975
976 for(c = clients; c; c = c->next)
977 if(c->tags[t] && c->monitor == selmonitor)
978 return True;
979 return False;
980}
981
982Bool
983isprotodel(Client *c) {
984 int i, n;
985 Atom *protocols;
986 Bool ret = False;
987
988 if(XGetWMProtocols(dpy, c->win, &protocols, &n)) {
989 for(i = 0; !ret && i < n; i++)
990 if(protocols[i] == wmatom[WMDelete])
991 ret = True;
992 XFree(protocols);
993 }
994 return ret;
995}
996
997Bool
998isurgent(int monitor, unsigned int t) {
999 Client *c;
1000
1001 for(c = clients; c; c = c->next)
1002 if(c->monitor == monitor && c->isurgent && c->tags[t])
1003 return True;
1004 return False;
1005}
1006
1007Bool
1008isvisible(Client *c, int monitor) {
1009 unsigned int i;
1010
1011 for(i = 0; i < LENGTH(tags); i++)
1012 if(c->tags[i] && monitors[c->monitor].seltags[i] && c->monitor == monitor)
1013 return True;
1014 return False;
1015}
1016
1017void
1018keypress(XEvent *e) {
1019 unsigned int i;
1020 KeySym keysym;
1021 XKeyEvent *ev;
1022
1023 ev = &e->xkey;
1024 keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
1025 for(i = 0; i < LENGTH(keys); i++)
1026 if(keysym == keys[i].keysym
1027 && CLEANMASK(keys[i].mod) == CLEANMASK(ev->state))
1028 {
1029 if(keys[i].func)
1030 keys[i].func(keys[i].arg);
1031 }
1032}
1033
1034void
1035killclient(const char *arg) {
1036 XEvent ev;
1037
1038 if(!sel)
1039 return;
1040 if(isprotodel(sel)) {
1041 ev.type = ClientMessage;
1042 ev.xclient.window = sel->win;
1043 ev.xclient.message_type = wmatom[WMProtocols];
1044 ev.xclient.format = 32;
1045 ev.xclient.data.l[0] = wmatom[WMDelete];
1046 ev.xclient.data.l[1] = CurrentTime;
1047 XSendEvent(dpy, sel->win, False, NoEventMask, &ev);
1048 }
1049 else
1050 XKillClient(dpy, sel->win);
1051}
1052
1053void
1054manage(Window w, XWindowAttributes *wa) {
1055 Client *c, *t = NULL;
1056 Monitor *m;
1057 Status rettrans;
1058 Window trans;
1059 XWindowChanges wc;
1060
1061 c = emallocz(sizeof(Client));
1062 c->tags = emallocz(sizeof initags);
1063 c->win = w;
1064
1065 applyrules(c);
1066
1067 m = &monitors[c->monitor];
1068
1069 c->x = wa->x + m->sx;
1070 c->y = wa->y + m->sy;
1071 c->w = wa->width;
1072 c->h = wa->height;
1073 c->oldborder = wa->border_width;
1074
1075 if(c->w == m->sw && c->h == m->sh) {
1076 c->x = m->sx;
1077 c->y = m->sy;
1078 c->border = wa->border_width;
1079 }
1080 else {
1081 if(c->x + c->w + 2 * c->border > m->wax + m->waw)
1082 c->x = m->wax + m->waw - c->w - 2 * c->border;
1083 if(c->y + c->h + 2 * c->border > m->way + m->wah)
1084 c->y = m->way + m->wah - c->h - 2 * c->border;
1085 if(c->x < m->wax)
1086 c->x = m->wax;
1087 if(c->y < m->way)
1088 c->y = m->way;
1089 c->border = BORDERPX;
1090 }
1091 wc.border_width = c->border;
1092 XConfigureWindow(dpy, w, CWBorderWidth, &wc);
1093 XSetWindowBorder(dpy, w, m->dc.norm[ColBorder]);
1094 configure(c); /* propagates border_width, if size doesn't change */
1095 updatesizehints(c);
1096 XSelectInput(dpy, w, EnterWindowMask | FocusChangeMask | PropertyChangeMask | StructureNotifyMask);
1097 grabbuttons(c, False);
1098 updatetitle(c);
1099 if((rettrans = XGetTransientForHint(dpy, w, &trans) == Success))
1100 for(t = clients; t && t->win != trans; t = t->next);
1101 if(t)
1102 memcpy(c->tags, t->tags, sizeof initags);
1103 if(!c->isfloating)
1104 c->isfloating = (rettrans == Success) || c->isfixed;
1105 attach(c);
1106 attachstack(c);
1107 XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h); /* some windows require this */
1108 ban(c);
1109 XMapWindow(dpy, c->win);
1110 setclientstate(c, NormalState);
1111 arrange();
1112}
1113
1114void
1115mappingnotify(XEvent *e) {
1116 XMappingEvent *ev = &e->xmapping;
1117
1118 XRefreshKeyboardMapping(ev);
1119 if(ev->request == MappingKeyboard)
1120 grabkeys();
1121}
1122
1123void
1124maprequest(XEvent *e) {
1125 static XWindowAttributes wa;
1126 XMapRequestEvent *ev = &e->xmaprequest;
1127
1128 if(!XGetWindowAttributes(dpy, ev->window, &wa))
1129 return;
1130 if(wa.override_redirect)
1131 return;
1132 if(!getclient(ev->window))
1133 manage(ev->window, &wa);
1134}
1135
1136int
1137monitorat() {
1138 int i, x, y;
1139 Window win;
1140 unsigned int mask;
1141
1142 XQueryPointer(dpy, monitors[selmonitor].root, &win, &win, &x, &y, &i, &i, &mask);
1143 for(i = 0; i < mcount; i++) {
1144 fprintf(stderr, "checking monitor[%d]: %d %d %d %d\n", i, monitors[i].sx, monitors[i].sy, monitors[i].sw, monitors[i].sh);
1145 if((x >= monitors[i].sx && x < monitors[i].sx + monitors[i].sw)
1146 && (y >= monitors[i].sy && y < monitors[i].sy + monitors[i].sh)) {
1147 fprintf(stderr, "%d,%d -> %d\n", x, y, i);
1148 return i;
1149 }
1150 }
1151 fprintf(stderr, "?,? -> 0\n");
1152 return 0;
1153}
1154
1155void
1156movemouse(Client *c) {
1157 int x1, y1, ocx, ocy, di, nx, ny;
1158 unsigned int dui;
1159 Window dummy;
1160 XEvent ev;
1161
1162 ocx = nx = c->x;
1163 ocy = ny = c->y;
1164 if(XGrabPointer(dpy, monitors[selmonitor].root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
1165 None, cursor[CurMove], CurrentTime) != GrabSuccess)
1166 return;
1167 XQueryPointer(dpy, monitors[selmonitor].root, &dummy, &dummy, &x1, &y1, &di, &di, &dui);
1168 for(;;) {
1169 XMaskEvent(dpy, MOUSEMASK | ExposureMask | SubstructureRedirectMask, &ev);
1170 switch (ev.type) {
1171 case ButtonRelease:
1172 XUngrabPointer(dpy, CurrentTime);
1173 return;
1174 case ConfigureRequest:
1175 case Expose:
1176 case MapRequest:
1177 handler[ev.type](&ev);
1178 break;
1179 case MotionNotify:
1180 XSync(dpy, False);
1181 nx = ocx + (ev.xmotion.x - x1);
1182 ny = ocy + (ev.xmotion.y - y1);
1183 Monitor *m = &monitors[monitorat()];
1184 if(abs(m->wax - nx) < SNAP)
1185 nx = m->wax;
1186 else if(abs((m->wax + m->waw) - (nx + c->w + 2 * c->border)) < SNAP)
1187 nx = m->wax + m->waw - c->w - 2 * c->border;
1188 if(abs(m->way - ny) < SNAP)
1189 ny = m->way;
1190 else if(abs((m->way + m->wah) - (ny + c->h + 2 * c->border)) < SNAP)
1191 ny = m->way + m->wah - c->h - 2 * c->border;
1192 if((monitors[selmonitor].layout->arrange != floating) && (abs(nx - c->x) > SNAP || abs(ny - c->y) > SNAP))
1193 togglefloating(NULL);
1194 if((monitors[selmonitor].layout->arrange == floating) || c->isfloating)
1195 resize(c, nx, ny, c->w, c->h, False);
1196 memcpy(c->tags, monitors[monitorat()].seltags, sizeof initags);
1197 break;
1198 }
1199 }
1200}
1201
1202Client *
1203nexttiled(Client *c, int monitor) {
1204 for(; c && (c->isfloating || !isvisible(c, monitor)); c = c->next);
1205 return c;
1206}
1207
1208void
1209propertynotify(XEvent *e) {
1210 Client *c;
1211 Window trans;
1212 XPropertyEvent *ev = &e->xproperty;
1213
1214 if(ev->state == PropertyDelete)
1215 return; /* ignore */
1216 if((c = getclient(ev->window))) {
1217 switch (ev->atom) {
1218 default: break;
1219 case XA_WM_TRANSIENT_FOR:
1220 XGetTransientForHint(dpy, c->win, &trans);
1221 if(!c->isfloating && (c->isfloating = (getclient(trans) != NULL)))
1222 arrange();
1223 break;
1224 case XA_WM_NORMAL_HINTS:
1225 updatesizehints(c);
1226 break;
1227 case XA_WM_HINTS:
1228 updatewmhints(c);
1229 drawbar();
1230 break;
1231 }
1232 if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
1233 updatetitle(c);
1234 if(c == sel)
1235 drawbar();
1236 }
1237 }
1238}
1239
1240void
1241quit(const char *arg) {
1242 readin = running = False;
1243}
1244
1245void
1246reapply(const char *arg) {
1247 static Bool zerotags[LENGTH(tags)] = { 0 };
1248 Client *c;
1249
1250 for(c = clients; c; c = c->next) {
1251 memcpy(c->tags, zerotags, sizeof zerotags);
1252 applyrules(c);
1253 }
1254 arrange();
1255}
1256
1257void
1258resize(Client *c, int x, int y, int w, int h, Bool sizehints) {
1259 XWindowChanges wc;
1260 //Monitor scr = monitors[monitorat()];
1261// c->monitor = monitorat();
1262
1263 if(sizehints) {
1264 /* set minimum possible */
1265 if (w < 1)
1266 w = 1;
1267 if (h < 1)
1268 h = 1;
1269
1270 /* temporarily remove base dimensions */
1271 w -= c->basew;
1272 h -= c->baseh;
1273
1274 /* adjust for aspect limits */
1275 if (c->minay > 0 && c->maxay > 0 && c->minax > 0 && c->maxax > 0) {
1276 if (w * c->maxay > h * c->maxax)
1277 w = h * c->maxax / c->maxay;
1278 else if (w * c->minay < h * c->minax)
1279 h = w * c->minay / c->minax;
1280 }
1281
1282 /* adjust for increment value */
1283 if(c->incw)
1284 w -= w % c->incw;
1285 if(c->inch)
1286 h -= h % c->inch;
1287
1288 /* restore base dimensions */
1289 w += c->basew;
1290 h += c->baseh;
1291
1292 if(c->minw > 0 && w < c->minw)
1293 w = c->minw;
1294 if(c->minh > 0 && h < c->minh)
1295 h = c->minh;
1296 if(c->maxw > 0 && w > c->maxw)
1297 w = c->maxw;
1298 if(c->maxh > 0 && h > c->maxh)
1299 h = c->maxh;
1300 }
1301 if(w <= 0 || h <= 0)
1302 return;
1303 /* TODO: offscreen appearance fixes */
1304 /*
1305 if(x > scr.sw)
1306 x = scr.sw - w - 2 * c->border;
1307 if(y > scr.sh)
1308 y = scr.sh - h - 2 * c->border;
1309 if(x + w + 2 * c->border < scr.sx)
1310 x = scr.sx;
1311 if(y + h + 2 * c->border < scr.sy)
1312 y = scr.sy;
1313 */
1314 if(c->x != x || c->y != y || c->w != w || c->h != h) {
1315 c->x = wc.x = x;
1316 c->y = wc.y = y;
1317 c->w = wc.width = w;
1318 c->h = wc.height = h;
1319 wc.border_width = c->border;
1320 XConfigureWindow(dpy, c->win, CWX | CWY | CWWidth | CWHeight | CWBorderWidth, &wc);
1321 configure(c);
1322 XSync(dpy, False);
1323 }
1324}
1325
1326void
1327resizemouse(Client *c) {
1328 int ocx, ocy;
1329 int nw, nh;
1330 XEvent ev;
1331
1332 ocx = c->x;
1333 ocy = c->y;
1334 if(XGrabPointer(dpy, monitors[selmonitor].root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
1335 None, cursor[CurResize], CurrentTime) != GrabSuccess)
1336 return;
1337 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->border - 1, c->h + c->border - 1);
1338 for(;;) {
1339 XMaskEvent(dpy, MOUSEMASK | ExposureMask | SubstructureRedirectMask , &ev);
1340 switch(ev.type) {
1341 case ButtonRelease:
1342 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0,
1343 c->w + c->border - 1, c->h + c->border - 1);
1344 XUngrabPointer(dpy, CurrentTime);
1345 while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
1346 return;
1347 case ConfigureRequest:
1348 case Expose:
1349 case MapRequest:
1350 handler[ev.type](&ev);
1351 break;
1352 case MotionNotify:
1353 XSync(dpy, False);
1354 if((nw = ev.xmotion.x - ocx - 2 * c->border + 1) <= 0)
1355 nw = 1;
1356 if((nh = ev.xmotion.y - ocy - 2 * c->border + 1) <= 0)
1357 nh = 1;
1358 if((monitors[selmonitor].layout->arrange != floating) && (abs(nw - c->w) > SNAP || abs(nh - c->h) > SNAP))
1359 togglefloating(NULL);
1360 if((monitors[selmonitor].layout->arrange == floating) || c->isfloating)
1361 resize(c, c->x, c->y, nw, nh, True);
1362 break;
1363 }
1364 }
1365}
1366
1367void
1368restack(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
1399void
1400run(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
1459void
1460scan(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
1489void
1490setclientstate(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
1497void
1498setlayout(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
1521void
1522setmwfact(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
1545void
1546setup(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
1660void
1661spawn(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
1684void
1685tag(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
1696unsigned int
1697textnw(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
1707unsigned int
1708textw(Monitor *m, const char *text) {
1709 return textnw(m, text, strlen(text)) + m->dc.font.height;
1710}
1711
1712void
1713tile(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 /* window geoms */
1728 mw = (n == 1) ? m->waw : m->mwfact * m->waw;
1729 th = (n > 1) ? m->wah / (n - 1) : 0;
1730 if(n > 1 && th < bh)
1731 th = m->wah;
1732
1733 for(j = 0, c = mc = nexttiled(clients, i); c; c = nexttiled(c->next, i)) {
1734 if(j == 0) { /* master */
1735 nx = m->wax;
1736 ny = m->way;
1737 nw = mw - 2 * c->border;
1738 nh = m->wah - 2 * c->border;
1739 }
1740 else { /* tile window */
1741 if(j == 1) {
1742 ny = m->way;
1743 nx += mc->w + 2 * mc->border;
1744 nw = m->waw - mw - 2 * c->border;
1745 }
1746 if(j + 1 == n) /* remainder */
1747 nh = (m->way + m->wah) - ny - 2 * c->border;
1748 else
1749 nh = th - 2 * c->border;
1750 }
1751 fprintf(stderr, "tile(%d, %d, %d, %d)\n", nx, ny, nw, nh);
1752 resize(c, nx, ny, nw, nh, RESIZEHINTS);
1753 if((RESIZEHINTS) && ((c->h < bh) || (c->h > nh) || (c->w < bh) || (c->w > nw)))
1754 /* client doesn't accept size constraints */
1755 resize(c, nx, ny, nw, nh, False);
1756 if(n > 1 && th != m->wah)
1757 ny = c->y + c->h + 2 * c->border;
1758
1759 j++;
1760 }
1761 }
1762 fprintf(stderr, "done\n");
1763}
1764void
1765togglebar(const char *arg) {
1766 if(bpos == BarOff)
1767 bpos = (BARPOS == BarOff) ? BarTop : BARPOS;
1768 else
1769 bpos = BarOff;
1770 updatebarpos(&monitors[monitorat()]);
1771 arrange();
1772}
1773
1774void
1775togglefloating(const char *arg) {
1776 if(!sel)
1777 return;
1778 sel->isfloating = !sel->isfloating;
1779 if(sel->isfloating)
1780 resize(sel, sel->x, sel->y, sel->w, sel->h, True);
1781 arrange();
1782}
1783
1784void
1785toggletag(const char *arg) {
1786 unsigned int i, j;
1787
1788 if(!sel)
1789 return;
1790 i = idxoftag(arg);
1791 sel->tags[i] = !sel->tags[i];
1792 for(j = 0; j < LENGTH(tags) && !sel->tags[j]; j++);
1793 if(j == LENGTH(tags))
1794 sel->tags[i] = True; /* at least one tag must be enabled */
1795 arrange();
1796}
1797
1798void
1799toggleview(const char *arg) {
1800 unsigned int i, j;
1801
1802 Monitor *m = &monitors[monitorat()];
1803
1804 i = idxoftag(arg);
1805 m->seltags[i] = !m->seltags[i];
1806 for(j = 0; j < LENGTH(tags) && !m->seltags[j]; j++);
1807 if(j == LENGTH(tags))
1808 m->seltags[i] = True; /* at least one tag must be viewed */
1809 arrange();
1810}
1811
1812void
1813unban(Client *c) {
1814 if(!c->isbanned)
1815 return;
1816 XMoveWindow(dpy, c->win, c->x, c->y);
1817 c->isbanned = False;
1818}
1819
1820void
1821unmanage(Client *c) {
1822 XWindowChanges wc;
1823
1824 wc.border_width = c->oldborder;
1825 /* The server grab construct avoids race conditions. */
1826 XGrabServer(dpy);
1827 XSetErrorHandler(xerrordummy);
1828 XConfigureWindow(dpy, c->win, CWBorderWidth, &wc); /* restore border */
1829 detach(c);
1830 detachstack(c);
1831 if(sel == c)
1832 focus(NULL);
1833 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
1834 setclientstate(c, WithdrawnState);
1835 free(c->tags);
1836 free(c);
1837 XSync(dpy, False);
1838 XSetErrorHandler(xerror);
1839 XUngrabServer(dpy);
1840 arrange();
1841}
1842
1843void
1844unmapnotify(XEvent *e) {
1845 Client *c;
1846 XUnmapEvent *ev = &e->xunmap;
1847
1848 if((c = getclient(ev->window)))
1849 unmanage(c);
1850}
1851
1852void
1853updatebarpos(Monitor *m) {
1854 XEvent ev;
1855
1856 m->wax = m->sx;
1857 m->way = m->sy;
1858 m->wah = m->sh;
1859 m->waw = m->sw;
1860 switch(bpos) {
1861 default:
1862 m->wah -= bh;
1863 m->way += bh;
1864 XMoveWindow(dpy, m->barwin, m->sx, m->sy);
1865 break;
1866 case BarBot:
1867 m->wah -= bh;
1868 XMoveWindow(dpy, m->barwin, m->sx, m->sy + m->wah);
1869 break;
1870 case BarOff:
1871 XMoveWindow(dpy, m->barwin, m->sx, m->sy - bh);
1872 break;
1873 }
1874 XSync(dpy, False);
1875 while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
1876}
1877
1878void
1879updatesizehints(Client *c) {
1880 long msize;
1881 XSizeHints size;
1882
1883 if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
1884 size.flags = PSize;
1885 c->flags = size.flags;
1886 if(c->flags & PBaseSize) {
1887 c->basew = size.base_width;
1888 c->baseh = size.base_height;
1889 }
1890 else if(c->flags & PMinSize) {
1891 c->basew = size.min_width;
1892 c->baseh = size.min_height;
1893 }
1894 else
1895 c->basew = c->baseh = 0;
1896 if(c->flags & PResizeInc) {
1897 c->incw = size.width_inc;
1898 c->inch = size.height_inc;
1899 }
1900 else
1901 c->incw = c->inch = 0;
1902 if(c->flags & PMaxSize) {
1903 c->maxw = size.max_width;
1904 c->maxh = size.max_height;
1905 }
1906 else
1907 c->maxw = c->maxh = 0;
1908 if(c->flags & PMinSize) {
1909 c->minw = size.min_width;
1910 c->minh = size.min_height;
1911 }
1912 else if(c->flags & PBaseSize) {
1913 c->minw = size.base_width;
1914 c->minh = size.base_height;
1915 }
1916 else
1917 c->minw = c->minh = 0;
1918 if(c->flags & PAspect) {
1919 c->minax = size.min_aspect.x;
1920 c->maxax = size.max_aspect.x;
1921 c->minay = size.min_aspect.y;
1922 c->maxay = size.max_aspect.y;
1923 }
1924 else
1925 c->minax = c->maxax = c->minay = c->maxay = 0;
1926 c->isfixed = (c->maxw && c->minw && c->maxh && c->minh
1927 && c->maxw == c->minw && c->maxh == c->minh);
1928}
1929
1930void
1931updatetitle(Client *c) {
1932 if(!gettextprop(c->win, netatom[NetWMName], c->name, sizeof c->name))
1933 gettextprop(c->win, wmatom[WMName], c->name, sizeof c->name);
1934}
1935
1936void
1937updatewmhints(Client *c) {
1938 XWMHints *wmh;
1939
1940 if((wmh = XGetWMHints(dpy, c->win))) {
1941 c->isurgent = (wmh->flags & XUrgencyHint) ? True : False;
1942 XFree(wmh);
1943 }
1944}
1945
1946/* There's no way to check accesses to destroyed windows, thus those cases are
1947 * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
1948 * default error handler, which may call exit. */
1949int
1950xerror(Display *dpy, XErrorEvent *ee) {
1951 if(ee->error_code == BadWindow
1952 || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
1953 || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
1954 || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
1955 || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
1956 || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
1957 || (ee->request_code == X_GrabKey && ee->error_code == BadAccess)
1958 || (ee->request_code == X_CopyArea && ee->error_code == BadDrawable))
1959 return 0;
1960 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
1961 ee->request_code, ee->error_code);
1962 return xerrorxlib(dpy, ee); /* may call exit */
1963}
1964
1965int
1966xerrordummy(Display *dsply, XErrorEvent *ee) {
1967 return 0;
1968}
1969
1970/* Startup Error handler to check if another window manager
1971 * is already running. */
1972int
1973xerrorstart(Display *dsply, XErrorEvent *ee) {
1974 otherwm = True;
1975 return -1;
1976}
1977
1978void
1979view(const char *arg) {
1980 unsigned int i;
1981 Bool tmp[LENGTH(tags)];
1982 Monitor *m = &monitors[monitorat()];
1983
1984 for(i = 0; i < LENGTH(tags); i++)
1985 tmp[i] = (NULL == arg);
1986 tmp[idxoftag(arg)] = True;
1987 if(memcmp(m->seltags, tmp, sizeof initags) != 0) {
1988 memcpy(m->prevtags, m->seltags, sizeof initags);
1989 memcpy(m->seltags, tmp, sizeof initags);
1990 arrange();
1991 }
1992}
1993
1994void
1995viewprevtag(const char *arg) {
1996 static Bool tmp[LENGTH(tags)];
1997
1998 Monitor *m = &monitors[monitorat()];
1999
2000 memcpy(tmp, m->seltags, sizeof initags);
2001 memcpy(m->seltags, m->prevtags, sizeof initags);
2002 memcpy(m->prevtags, tmp, sizeof initags);
2003 arrange();
2004}
2005
2006void
2007zoom(const char *arg) {
2008 Client *c;
2009
2010 if(!sel || !dozoom || sel->isfloating)
2011 return;
2012 if((c = sel) == nexttiled(clients, c->monitor))
2013 if(!(c = nexttiled(c->next, c->monitor)))
2014 return;
2015 detach(c);
2016 attach(c);
2017 focus(c);
2018 arrange();
2019}
2020
2021void
2022movetomonitor(const char *arg) {
2023 if (sel) {
2024 sel->monitor = arg ? atoi(arg) : (sel->monitor+1) % mcount;
2025
2026 memcpy(sel->tags, monitors[sel->monitor].seltags, sizeof initags);
2027 resize(sel, monitors[sel->monitor].wax, monitors[sel->monitor].way, sel->w, sel->h, True);
2028 arrange();
2029 }
2030}
2031
2032void
2033selectmonitor(const char *arg) {
2034 Monitor *m = &monitors[arg ? atoi(arg) : (monitorat()+1) % mcount];
2035
2036 XWarpPointer(dpy, None, m->root, 0, 0, 0, 0, m->wax+m->waw/2, m->way+m->wah/2);
2037 focus(NULL);
2038}
2039
2040
2041int
2042main(int argc, char *argv[]) {
2043 if(argc == 2 && !strcmp("-v", argv[1]))
2044 eprint("dwm-"VERSION", © 2006-2007 Anselm R. Garbe, Sander van Dijk, "
2045 "Jukka Salmi, Premysl Hruby, Szabolcs Nagy, Christof Musik\n");
2046 else if(argc != 1)
2047 eprint("usage: dwm [-v]\n");
2048
2049 setlocale(LC_CTYPE, "");
2050 if(!(dpy = XOpenDisplay(0)))
2051 eprint("dwm: cannot open display\n");
2052
2053 checkotherwm();
2054 setup();
2055 drawbar();
2056 scan();
2057 run();
2058 cleanup();
2059
2060 XCloseDisplay(dpy);
2061 return 0;
2062}