aewl
view dwm.c @ 754:4c12dccc288d
this is the (second) begin of aewl - my personal stipped down dwm
| author | meillo@marmaro.de |
|---|---|
| date | Thu, 29 May 2008 23:12:30 +0200 |
| parents | main.c@628c5bac7f3b |
| children | cdd895c163bd |
line source
1 /* (C)opyright MMVI-MMVII Anselm R. Garbe <garbeam at gmail dot com>
2 * See LICENSE file for license details.
3 *
4 * dynamic window manager is designed like any other X client as well. It is
5 * driven through handling X events. In contrast to other X clients, a window
6 * manager selects for SubstructureRedirectMask on the root window, to receive
7 * events about window (dis-)appearance. Only one X connection at a time is
8 * allowed to select for this event mask.
9 *
10 * Calls to fetch an X event from the event queue are blocking. Due reading
11 * status text from standard input, a select()-driven main loop has been
12 * implemented which selects for reads on the X connection and STDIN_FILENO to
13 * handle all data smoothly. The event handlers of dwm are organized in an
14 * array which is accessed whenever a new event has been fetched. This allows
15 * event dispatching in O(1) time.
16 *
17 * Each child of the root window is called a client, except windows which have
18 * set the override_redirect flag. Clients are organized in a global
19 * doubly-linked client list, the focus history is remembered through a global
20 * stack list. Each client contains an array of Bools of the same size as the
21 * global tags array to indicate the tags of a client. For each client dwm
22 * creates a small title window, which is resized whenever the (_NET_)WM_NAME
23 * properties are updated or the client is moved/resized.
24 *
25 * Keys and tagging rules are organized as arrays and defined in the config.h
26 * file. These arrays are kept static in event.o and tag.o respectively,
27 * because no other part of dwm needs access to them. The current mode is
28 * represented by the arrange() function pointer, which wether points to
29 * dofloat() or dotile().
30 *
31 * To understand everything else, start reading main.c:main().
32 */
34 #include "config.h"
35 #include <errno.h>
36 #include <locale.h>
37 #include <regex.h>
38 #include <stdio.h>
39 #include <stdarg.h>
40 #include <stdlib.h>
41 #include <string.h>
42 #include <unistd.h>
43 #include <sys/select.h>
44 #include <sys/types.h>
45 #include <sys/wait.h>
46 #include <X11/cursorfont.h>
47 #include <X11/keysym.h>
48 #include <X11/Xatom.h>
49 #include <X11/Xlib.h>
50 #include <X11/Xproto.h>
51 #include <X11/Xutil.h>
53 /* mask shorthands, used in event.c and client.c */
54 #define BUTTONMASK (ButtonPressMask | ButtonReleaseMask)
56 enum { NetSupported, NetWMName, NetLast }; /* EWMH atoms */
57 enum { WMProtocols, WMDelete, WMState, WMLast }; /* default atoms */
58 enum { CurNormal, CurResize, CurMove, CurLast }; /* cursor */
59 enum { ColBorder, ColFG, ColBG, ColLast }; /* color */
61 typedef union {
62 const char *cmd;
63 int i;
64 } Arg; /* argument type */
66 typedef struct {
67 int ascent;
68 int descent;
69 int height;
70 XFontSet set;
71 XFontStruct *xfont;
72 } Fnt;
74 typedef struct {
75 int x, y, w, h;
76 unsigned long norm[ColLast];
77 unsigned long sel[ColLast];
78 Drawable drawable;
79 Fnt font;
80 GC gc;
81 } DC; /* draw context */
83 typedef struct Client Client;
84 struct Client {
85 char name[256];
86 int x, y, w, h;
87 int rx, ry, rw, rh; /* revert geometry */
88 int basew, baseh, incw, inch, maxw, maxh, minw, minh;
89 int minax, minay, maxax, maxay;
90 long flags;
91 unsigned int border;
92 Bool isfixed, isfloat, ismax;
93 Bool *tags;
94 Client *next;
95 Client *prev;
96 Client *snext;
97 Window win;
98 };
100 typedef struct {
101 const char *clpattern;
102 const char *tpattern;
103 Bool isfloat;
104 } Rule;
106 typedef struct {
107 regex_t *clregex;
108 regex_t *tregex;
109 } RReg;
112 typedef struct {
113 unsigned long mod;
114 KeySym keysym;
115 void (*func)(Arg *arg);
116 Arg arg;
117 } Key;
120 #define CLEANMASK(mask) (mask & ~(numlockmask | LockMask))
121 #define MOUSEMASK (BUTTONMASK | PointerMotionMask)
125 const char *tags[]; /* all tags */
126 char stext[256]; /* status text */
127 int bh, bmw; /* bar height, bar mode label width */
128 int screen, sx, sy, sw, sh; /* screen geometry */
129 int wax, way, wah, waw; /* windowarea geometry */
130 unsigned int nmaster; /* number of master clients */
131 unsigned int ntags, numlockmask; /* number of tags, dynamic lock mask */
132 void (*handler[LASTEvent])(XEvent *); /* event handler */
133 void (*arrange)(void); /* arrange function, indicates mode */
134 Atom wmatom[WMLast], netatom[NetLast];
135 Bool running, selscreen, *seltag; /* seltag is array of Bool */
136 Client *clients, *sel, *stack; /* global client list and stack */
137 Cursor cursor[CurLast];
138 DC dc; /* global draw context */
139 Display *dpy;
140 Window root, barwin;
142 Bool running = True;
143 Bool selscreen = True;
144 Client *clients = NULL;
145 Client *sel = NULL;
146 Client *stack = NULL;
147 DC dc = {0};
149 static int (*xerrorxlib)(Display *, XErrorEvent *);
150 static Bool otherwm, readin;
151 static RReg *rreg = NULL;
152 static unsigned int len = 0;
155 TAGS
156 RULES
159 /* client.c */
160 void configure(Client *c); /* send synthetic configure event */
161 void focus(Client *c); /* focus c, c may be NULL */
162 Client *getclient(Window w); /* return client of w */
163 Bool isprotodel(Client *c); /* returns True if c->win supports wmatom[WMDelete] */
164 void killclient(Arg *arg); /* kill c nicely */
165 void manage(Window w, XWindowAttributes *wa); /* manage new client */
166 void resize(Client *c, Bool sizehints); /* resize c*/
167 void updatesizehints(Client *c); /* update the size hint variables of c */
168 void updatetitle(Client *c); /* update the name of c */
169 void unmanage(Client *c); /* destroy c */
171 /* draw.c */
172 void drawstatus(void); /* draw the bar */
173 unsigned long getcolor(const char *colstr); /* return color of colstr */
174 void setfont(const char *fontstr); /* set the font for DC */
175 unsigned int textw(const char *text); /* return the width of text in px*/
177 /* event.c */
178 void grabkeys(void); /* grab all keys defined in config.h */
179 void procevent(void); /* process pending X events */
181 /* main.c */
182 void quit(Arg *arg); /* quit dwm nicely */
183 void sendevent(Window w, Atom a, long value); /* send synthetic event to w */
184 int xerror(Display *dsply, XErrorEvent *ee); /* dwm's X error handler */
186 /* tag.c */
187 void initrregs(void); /* initialize regexps of rules defined in config.h */
188 Client *getnext(Client *c); /* returns next visible client */
189 Client *getprev(Client *c); /* returns previous visible client */
190 void settags(Client *c, Client *trans); /* sets tags of c */
191 void tag(Arg *arg); /* tags c with arg's index */
192 void toggletag(Arg *arg); /* toggles c tags with arg's index */
193 void viewnext(Arg *arg); /* view next tag(s) */
195 /* util.c */
196 void *emallocz(unsigned int size); /* allocates zero-initialized memory, exits on error */
197 void eprint(const char *errstr, ...); /* prints errstr and exits with 1 */
198 void spawn(Arg *arg); /* forks a new subprocess with to arg's cmd */
200 /* view.c */
201 void detach(Client *c); /* detaches c from global client list */
202 void dofloat(void); /* arranges all windows floating */
203 void dotile(void); /* arranges all windows tiled */
204 void domax(void); /* arranges all windows fullscreen */
205 void focusnext(Arg *arg); /* focuses next visible client, arg is ignored */
206 void incnmaster(Arg *arg); /* increments nmaster with arg's index value */
207 Bool isvisible(Client *c); /* returns True if client is visible */
208 void restack(void); /* restores z layers of all clients */
209 void togglefloat(Arg *arg); /* toggles focusesd client between floating/non-floating state */
210 void togglemode(Arg *arg); /* toggles global arrange function (dotile/dofloat) */
211 void view(Arg *arg); /* views the tag with arg's index */
212 void zoom(Arg *arg); /* zooms the focused client to master area, arg is ignored */
223 /* from view.c */
224 /* static */
226 static Client *
227 nexttiled(Client *c) {
228 for(c = getnext(c); c && c->isfloat; c = getnext(c->next));
229 return c;
230 }
232 static void
233 togglemax(Client *c) {
234 XEvent ev;
236 if(c->isfixed)
237 return;
239 if((c->ismax = !c->ismax)) {
240 c->rx = c->x; c->x = wax;
241 c->ry = c->y; c->y = way;
242 c->rw = c->w; c->w = waw - 2 * BORDERPX;
243 c->rh = c->h; c->h = wah - 2 * BORDERPX;
244 }
245 else {
246 c->x = c->rx;
247 c->y = c->ry;
248 c->w = c->rw;
249 c->h = c->rh;
250 }
251 resize(c, True);
252 while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
253 }
257 void (*arrange)(void) = DEFMODE;
259 void
260 detach(Client *c) {
261 if(c->prev)
262 c->prev->next = c->next;
263 if(c->next)
264 c->next->prev = c->prev;
265 if(c == clients)
266 clients = c->next;
267 c->next = c->prev = NULL;
268 }
270 void
271 dofloat(void) {
272 Client *c;
274 for(c = clients; c; c = c->next) {
275 if(isvisible(c)) {
276 resize(c, True);
277 }
278 else
279 XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
280 }
281 if(!sel || !isvisible(sel)) {
282 for(c = stack; c && !isvisible(c); c = c->snext);
283 focus(c);
284 }
285 restack();
286 }
288 void
289 dotile(void) {
290 unsigned int i, n, mw, mh, tw, th;
291 Client *c;
293 for(n = 0, c = nexttiled(clients); c; c = nexttiled(c->next))
294 n++;
295 /* window geoms */
296 mh = (n > nmaster) ? wah / nmaster : wah / (n > 0 ? n : 1);
297 mw = (n > nmaster) ? waw / 2 : waw;
298 th = (n > nmaster) ? wah / (n - nmaster) : 0;
299 tw = waw - mw;
301 for(i = 0, c = clients; c; c = c->next)
302 if(isvisible(c)) {
303 if(c->isfloat) {
304 resize(c, True);
305 continue;
306 }
307 c->ismax = False;
308 c->x = wax;
309 c->y = way;
310 if(i < nmaster) {
311 c->y += i * mh;
312 c->w = mw - 2 * BORDERPX;
313 c->h = mh - 2 * BORDERPX;
314 }
315 else { /* tile window */
316 c->x += mw;
317 c->w = tw - 2 * BORDERPX;
318 if(th > 2 * BORDERPX) {
319 c->y += (i - nmaster) * th;
320 c->h = th - 2 * BORDERPX;
321 }
322 else /* fallback if th <= 2 * BORDERPX */
323 c->h = wah - 2 * BORDERPX;
324 }
325 resize(c, False);
326 i++;
327 }
328 else
329 XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
330 if(!sel || !isvisible(sel)) {
331 for(c = stack; c && !isvisible(c); c = c->snext);
332 focus(c);
333 }
334 restack();
335 }
337 /* begin code by mitch */
338 void
339 arrangemax(Client *c) {
340 if(c == sel) {
341 c->ismax = True;
342 c->x = sx;
343 c->y = bh;
344 c->w = sw - 2 * BORDERPX;
345 c->h = sh - bh - 2 * BORDERPX;
346 XRaiseWindow(dpy, c->win);
347 } else {
348 c->ismax = False;
349 XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
350 XLowerWindow(dpy, c->win);
351 }
352 }
354 void
355 domax(void) {
356 Client *c;
358 for(c = clients; c; c = c->next) {
359 if(isvisible(c)) {
360 if(c->isfloat) {
361 resize(c, True);
362 continue;
363 }
364 arrangemax(c);
365 resize(c, False);
366 } else {
367 XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
368 }
370 }
371 if(!sel || !isvisible(sel)) {
372 for(c = stack; c && !isvisible(c); c = c->snext);
373 focus(c);
374 }
375 restack();
376 }
377 /* end code by mitch */
379 void
380 focusnext(Arg *arg) {
381 Client *c;
383 if(!sel)
384 return;
385 if(!(c = getnext(sel->next)))
386 c = getnext(clients);
387 if(c) {
388 focus(c);
389 restack();
390 }
391 }
393 void
394 incnmaster(Arg *arg) {
395 if((arrange == dofloat) || (nmaster + arg->i < 1)
396 || (wah / (nmaster + arg->i) <= 2 * BORDERPX))
397 return;
398 nmaster += arg->i;
399 if(sel)
400 arrange();
401 else
402 drawstatus();
403 }
405 Bool
406 isvisible(Client *c) {
407 unsigned int i;
409 for(i = 0; i < ntags; i++)
410 if(c->tags[i] && seltag[i])
411 return True;
412 return False;
413 }
415 void
416 restack(void) {
417 Client *c;
418 XEvent ev;
420 drawstatus();
421 if(!sel)
422 return;
423 if(sel->isfloat || arrange == dofloat)
424 XRaiseWindow(dpy, sel->win);
426 /* begin code by mitch */
427 if(arrange == domax) {
428 for(c = nexttiled(clients); c; c = nexttiled(c->next)) {
429 arrangemax(c);
430 resize(c, False);
431 }
433 } else if (arrange == dotile) {
434 /* end code by mitch */
436 if(!sel->isfloat)
437 XLowerWindow(dpy, sel->win);
438 for(c = nexttiled(clients); c; c = nexttiled(c->next)) {
439 if(c == sel)
440 continue;
441 XLowerWindow(dpy, c->win);
442 }
443 }
444 XSync(dpy, False);
445 while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
446 }
448 void
449 togglefloat(Arg *arg) {
450 if (!sel || arrange == dofloat)
451 return;
452 sel->isfloat = !sel->isfloat;
453 arrange();
454 }
456 void
457 togglemode(Arg *arg) {
458 /* only toggle between tile and max - float is just available through togglefloat */
459 arrange = (arrange == dotile) ? domax : dotile;
460 if(sel)
461 arrange();
462 else
463 drawstatus();
464 }
466 void
467 view(Arg *arg) {
468 unsigned int i;
470 for(i = 0; i < ntags; i++)
471 seltag[i] = (arg->i == -1) ? True : False;
472 if(arg->i >= 0 && arg->i < ntags)
473 seltag[arg->i] = True;
474 arrange();
475 }
477 void
478 zoom(Arg *arg) {
479 unsigned int n;
480 Client *c;
482 if(!sel)
483 return;
484 if(sel->isfloat || (arrange == dofloat)) {
485 togglemax(sel);
486 return;
487 }
488 for(n = 0, c = nexttiled(clients); c; c = nexttiled(c->next))
489 n++;
491 if((c = sel) == nexttiled(clients))
492 if(!(c = nexttiled(c->next)))
493 return;
494 detach(c);
495 if(clients)
496 clients->prev = c;
497 c->next = clients;
498 clients = c;
499 focus(c);
500 arrange();
501 }
518 /* from util.c */
521 void *
522 emallocz(unsigned int size) {
523 void *res = calloc(1, size);
525 if(!res)
526 eprint("fatal: could not malloc() %u bytes\n", size);
527 return res;
528 }
530 void
531 eprint(const char *errstr, ...) {
532 va_list ap;
534 va_start(ap, errstr);
535 vfprintf(stderr, errstr, ap);
536 va_end(ap);
537 exit(EXIT_FAILURE);
538 }
540 void
541 spawn(Arg *arg) {
542 static char *shell = NULL;
544 if(!shell && !(shell = getenv("SHELL")))
545 shell = "/bin/sh";
546 if(!arg->cmd)
547 return;
548 /* The double-fork construct avoids zombie processes and keeps the code
549 * clean from stupid signal handlers. */
550 if(fork() == 0) {
551 if(fork() == 0) {
552 if(dpy)
553 close(ConnectionNumber(dpy));
554 setsid();
555 execl(shell, shell, "-c", arg->cmd, (char *)NULL);
556 fprintf(stderr, "dwm: execl '%s -c %s'", shell, arg->cmd);
557 perror(" failed");
558 }
559 exit(0);
560 }
561 wait(0);
562 }
576 /* from tag.c */
578 /* static */
580 Client *
581 getnext(Client *c) {
582 for(; c && !isvisible(c); c = c->next);
583 return c;
584 }
586 Client *
587 getprev(Client *c) {
588 for(; c && !isvisible(c); c = c->prev);
589 return c;
590 }
592 void
593 initrregs(void) {
594 unsigned int i;
595 regex_t *reg;
597 if(rreg)
598 return;
599 len = sizeof rule / sizeof rule[0];
600 rreg = emallocz(len * sizeof(RReg));
601 for(i = 0; i < len; i++) {
602 if(rule[i].clpattern) {
603 reg = emallocz(sizeof(regex_t));
604 if(regcomp(reg, rule[i].clpattern, REG_EXTENDED))
605 free(reg);
606 else
607 rreg[i].clregex = reg;
608 }
609 if(rule[i].tpattern) {
610 reg = emallocz(sizeof(regex_t));
611 if(regcomp(reg, rule[i].tpattern, REG_EXTENDED))
612 free(reg);
613 else
614 rreg[i].tregex = reg;
615 }
616 }
617 }
619 void
620 settags(Client *c, Client *trans) {
621 char prop[512];
622 unsigned int i, j;
623 regmatch_t tmp;
624 Bool matched = trans != NULL;
625 XClassHint ch = { 0 };
627 if(matched) {
628 for(i = 0; i < ntags; i++)
629 c->tags[i] = trans->tags[i];
630 }
631 else {
632 XGetClassHint(dpy, c->win, &ch);
633 snprintf(prop, sizeof prop, "%s:%s:%s",
634 ch.res_class ? ch.res_class : "",
635 ch.res_name ? ch.res_name : "", c->name);
636 for(i = 0; i < len; i++)
637 if(rreg[i].clregex && !regexec(rreg[i].clregex, prop, 1, &tmp, 0)) {
638 c->isfloat = rule[i].isfloat;
639 for(j = 0; rreg[i].tregex && j < ntags; j++) {
640 if(!regexec(rreg[i].tregex, tags[j], 1, &tmp, 0)) {
641 matched = True;
642 c->tags[j] = True;
643 }
644 }
645 break; /* perform only the first rule matching */
646 }
647 if(ch.res_class)
648 XFree(ch.res_class);
649 if(ch.res_name)
650 XFree(ch.res_name);
651 }
652 if(!matched)
653 for(i = 0; i < ntags; i++)
654 c->tags[i] = seltag[i];
655 }
657 void
658 tag(Arg *arg) {
659 unsigned int i;
661 if(!sel)
662 return;
663 for(i = 0; i < ntags; i++)
664 sel->tags[i] = (arg->i == -1) ? True : False;
665 if(arg->i >= 0 && arg->i < ntags)
666 sel->tags[arg->i] = True;
667 arrange();
668 }
670 void
671 toggletag(Arg *arg) {
672 unsigned int i;
674 if(!sel)
675 return;
676 sel->tags[arg->i] = !sel->tags[arg->i];
677 for(i = 0; i < ntags && !sel->tags[i]; i++);
678 if(i == ntags)
679 sel->tags[arg->i] = True;
680 arrange();
681 }
683 /* begin code by jukka */
684 void
685 viewnext(Arg *arg) {
686 unsigned int i;
687 Bool last = seltag[ntags-1];
689 for (i=ntags-1; i>0; --i)
690 seltag[i] = seltag[i-1];
691 seltag[0] = last;
692 arrange();
693 }
694 /* end code by jukka */
711 /* from event.c */
712 /* static */
714 KEYS
718 static void
719 movemouse(Client *c) {
720 int x1, y1, ocx, ocy, di;
721 unsigned int dui;
722 Window dummy;
723 XEvent ev;
725 ocx = c->x;
726 ocy = c->y;
727 if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
728 None, cursor[CurMove], CurrentTime) != GrabSuccess)
729 return;
730 c->ismax = False;
731 XQueryPointer(dpy, root, &dummy, &dummy, &x1, &y1, &di, &di, &dui);
732 for(;;) {
733 XMaskEvent(dpy, MOUSEMASK | ExposureMask | SubstructureRedirectMask, &ev);
734 switch (ev.type) {
735 case ButtonRelease:
736 resize(c, True);
737 XUngrabPointer(dpy, CurrentTime);
738 return;
739 case ConfigureRequest:
740 case Expose:
741 case MapRequest:
742 handler[ev.type](&ev);
743 break;
744 case MotionNotify:
745 XSync(dpy, False);
746 c->x = ocx + (ev.xmotion.x - x1);
747 c->y = ocy + (ev.xmotion.y - y1);
748 if(abs(wax + c->x) < SNAP)
749 c->x = wax;
750 else if(abs((wax + waw) - (c->x + c->w + 2 * c->border)) < SNAP)
751 c->x = wax + waw - c->w - 2 * c->border;
752 if(abs(way - c->y) < SNAP)
753 c->y = way;
754 else if(abs((way + wah) - (c->y + c->h + 2 * c->border)) < SNAP)
755 c->y = way + wah - c->h - 2 * c->border;
756 resize(c, False);
757 break;
758 }
759 }
760 }
762 static void
763 resizemouse(Client *c) {
764 int ocx, ocy;
765 int nw, nh;
766 XEvent ev;
768 ocx = c->x;
769 ocy = c->y;
770 if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
771 None, cursor[CurResize], CurrentTime) != GrabSuccess)
772 return;
773 c->ismax = False;
774 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->border - 1, c->h + c->border - 1);
775 for(;;) {
776 XMaskEvent(dpy, MOUSEMASK | ExposureMask | SubstructureRedirectMask , &ev);
777 switch(ev.type) {
778 case ButtonRelease:
779 resize(c, True);
780 XUngrabPointer(dpy, CurrentTime);
781 return;
782 case ConfigureRequest:
783 case Expose:
784 case MapRequest:
785 handler[ev.type](&ev);
786 break;
787 case MotionNotify:
788 XSync(dpy, False);
789 nw = ev.xmotion.x - ocx - 2 * c->border + 1;
790 c->w = nw > 0 ? nw : 1;
791 nh = ev.xmotion.y - ocy - 2 * c->border + 1;
792 c->h = nh > 0 ? nh : 1;
793 resize(c, True);
794 break;
795 }
796 }
797 }
799 static void
800 buttonpress(XEvent *e) {
801 int x;
802 Arg a;
803 Client *c;
804 XButtonPressedEvent *ev = &e->xbutton;
806 if(barwin == ev->window) {
807 x = 0;
808 for(a.i = 0; a.i < ntags; a.i++) {
809 x += textw(tags[a.i]);
810 if(ev->x < x) {
811 if(ev->button == Button1) {
812 view(&a);
813 }
814 return;
815 }
816 }
817 if(ev->x < x + bmw)
818 if (ev->button == Button1) {
819 togglemode(NULL);
820 }
821 }
822 else if((c = getclient(ev->window))) {
823 focus(c);
824 if(CLEANMASK(ev->state) != MODKEY)
825 return;
826 if(ev->button == Button1 && (arrange == dofloat || c->isfloat)) {
827 restack();
828 movemouse(c);
829 }
830 else if(ev->button == Button2)
831 zoom(NULL);
832 else if(ev->button == Button3 && (arrange == dofloat || c->isfloat) &&
833 !c->isfixed) {
834 restack();
835 resizemouse(c);
836 }
837 }
838 }
840 static void
841 configurerequest(XEvent *e) {
842 unsigned long newmask;
843 Client *c;
844 XConfigureRequestEvent *ev = &e->xconfigurerequest;
845 XWindowChanges wc;
847 if((c = getclient(ev->window))) {
848 c->ismax = False;
849 if(ev->value_mask & CWX)
850 c->x = ev->x;
851 if(ev->value_mask & CWY)
852 c->y = ev->y;
853 if(ev->value_mask & CWWidth)
854 c->w = ev->width;
855 if(ev->value_mask & CWHeight)
856 c->h = ev->height;
857 if(ev->value_mask & CWBorderWidth)
858 c->border = ev->border_width;
859 wc.x = c->x;
860 wc.y = c->y;
861 wc.width = c->w;
862 wc.height = c->h;
863 newmask = ev->value_mask & (~(CWSibling | CWStackMode | CWBorderWidth));
864 if(newmask)
865 XConfigureWindow(dpy, c->win, newmask, &wc);
866 else
867 configure(c);
868 XSync(dpy, False);
869 if(c->isfloat) {
870 resize(c, False);
871 if(!isvisible(c))
872 XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
873 }
874 else
875 arrange();
876 }
877 else {
878 wc.x = ev->x;
879 wc.y = ev->y;
880 wc.width = ev->width;
881 wc.height = ev->height;
882 wc.border_width = ev->border_width;
883 wc.sibling = ev->above;
884 wc.stack_mode = ev->detail;
885 XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
886 XSync(dpy, False);
887 }
888 }
890 static void
891 destroynotify(XEvent *e) {
892 Client *c;
893 XDestroyWindowEvent *ev = &e->xdestroywindow;
895 if((c = getclient(ev->window)))
896 unmanage(c);
897 }
899 static void
900 enternotify(XEvent *e) {
901 Client *c;
902 XCrossingEvent *ev = &e->xcrossing;
904 if(ev->mode != NotifyNormal || ev->detail == NotifyInferior)
905 return;
906 if((c = getclient(ev->window)) && isvisible(c))
907 focus(c);
908 else if(ev->window == root) {
909 selscreen = True;
910 for(c = stack; c && !isvisible(c); c = c->snext);
911 focus(c);
912 }
913 }
915 static void
916 expose(XEvent *e) {
917 XExposeEvent *ev = &e->xexpose;
919 if(ev->count == 0) {
920 if(barwin == ev->window)
921 drawstatus();
922 }
923 }
925 static void
926 keypress(XEvent *e) {
927 static unsigned int len = sizeof key / sizeof key[0];
928 unsigned int i;
929 KeySym keysym;
930 XKeyEvent *ev = &e->xkey;
932 keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
933 for(i = 0; i < len; i++) {
934 if(keysym == key[i].keysym
935 && CLEANMASK(key[i].mod) == CLEANMASK(ev->state))
936 {
937 if(key[i].func)
938 key[i].func(&key[i].arg);
939 }
940 }
941 }
943 static void
944 leavenotify(XEvent *e) {
945 XCrossingEvent *ev = &e->xcrossing;
947 if((ev->window == root) && !ev->same_screen) {
948 selscreen = False;
949 focus(NULL);
950 }
951 }
953 static void
954 mappingnotify(XEvent *e) {
955 XMappingEvent *ev = &e->xmapping;
957 XRefreshKeyboardMapping(ev);
958 if(ev->request == MappingKeyboard)
959 grabkeys();
960 }
962 static void
963 maprequest(XEvent *e) {
964 static XWindowAttributes wa;
965 XMapRequestEvent *ev = &e->xmaprequest;
967 if(!XGetWindowAttributes(dpy, ev->window, &wa))
968 return;
969 if(wa.override_redirect) {
970 XSelectInput(dpy, ev->window,
971 (StructureNotifyMask | PropertyChangeMask));
972 return;
973 }
974 if(!getclient(ev->window))
975 manage(ev->window, &wa);
976 }
978 static void
979 propertynotify(XEvent *e) {
980 Client *c;
981 Window trans;
982 XPropertyEvent *ev = &e->xproperty;
984 if(ev->state == PropertyDelete)
985 return; /* ignore */
986 if((c = getclient(ev->window))) {
987 switch (ev->atom) {
988 default: break;
989 case XA_WM_TRANSIENT_FOR:
990 XGetTransientForHint(dpy, c->win, &trans);
991 if(!c->isfloat && (c->isfloat = (trans != 0)))
992 arrange();
993 break;
994 case XA_WM_NORMAL_HINTS:
995 updatesizehints(c);
996 break;
997 }
998 if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
999 updatetitle(c);
1000 if(c == sel)
1001 drawstatus();
1002 }
1003 }
1004 }
1006 static void
1007 unmapnotify(XEvent *e) {
1008 Client *c;
1009 XUnmapEvent *ev = &e->xunmap;
1011 if((c = getclient(ev->window)))
1012 unmanage(c);
1013 }
1017 void (*handler[LASTEvent]) (XEvent *) = {
1018 [ButtonPress] = buttonpress,
1019 [ConfigureRequest] = configurerequest,
1020 [DestroyNotify] = destroynotify,
1021 [EnterNotify] = enternotify,
1022 [LeaveNotify] = leavenotify,
1023 [Expose] = expose,
1024 [KeyPress] = keypress,
1025 [MappingNotify] = mappingnotify,
1026 [MapRequest] = maprequest,
1027 [PropertyNotify] = propertynotify,
1028 [UnmapNotify] = unmapnotify
1029 };
1031 void
1032 grabkeys(void) {
1033 static unsigned int len = sizeof key / sizeof key[0];
1034 unsigned int i;
1035 KeyCode code;
1037 XUngrabKey(dpy, AnyKey, AnyModifier, root);
1038 for(i = 0; i < len; i++) {
1039 code = XKeysymToKeycode(dpy, key[i].keysym);
1040 XGrabKey(dpy, code, key[i].mod, root, True,
1041 GrabModeAsync, GrabModeAsync);
1042 XGrabKey(dpy, code, key[i].mod | LockMask, root, True,
1043 GrabModeAsync, GrabModeAsync);
1044 XGrabKey(dpy, code, key[i].mod | numlockmask, root, True,
1045 GrabModeAsync, GrabModeAsync);
1046 XGrabKey(dpy, code, key[i].mod | numlockmask | LockMask, root, True,
1047 GrabModeAsync, GrabModeAsync);
1048 }
1049 }
1051 void
1052 procevent(void) {
1053 XEvent ev;
1055 while(XPending(dpy)) {
1056 XNextEvent(dpy, &ev);
1057 if(handler[ev.type])
1058 (handler[ev.type])(&ev); /* call handler */
1059 }
1060 }
1076 /* from draw.c */
1077 /* static */
1079 static unsigned int
1080 textnw(const char *text, unsigned int len) {
1081 XRectangle r;
1083 if(dc.font.set) {
1084 XmbTextExtents(dc.font.set, text, len, NULL, &r);
1085 return r.width;
1086 }
1087 return XTextWidth(dc.font.xfont, text, len);
1088 }
1090 static void
1091 drawtext(const char *text, unsigned long col[ColLast]) {
1092 int x, y, w, h;
1093 static char buf[256];
1094 unsigned int len, olen;
1095 XGCValues gcv;
1096 XRectangle r = { dc.x, dc.y, dc.w, dc.h };
1098 XSetForeground(dpy, dc.gc, col[ColBG]);
1099 XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
1100 if(!text)
1101 return;
1102 w = 0;
1103 olen = len = strlen(text);
1104 if(len >= sizeof buf)
1105 len = sizeof buf - 1;
1106 memcpy(buf, text, len);
1107 buf[len] = 0;
1108 h = dc.font.ascent + dc.font.descent;
1109 y = dc.y + (dc.h / 2) - (h / 2) + dc.font.ascent;
1110 x = dc.x + (h / 2);
1111 /* shorten text if necessary */
1112 while(len && (w = textnw(buf, len)) > dc.w - h)
1113 buf[--len] = 0;
1114 if(len < olen) {
1115 if(len > 1)
1116 buf[len - 1] = '.';
1117 if(len > 2)
1118 buf[len - 2] = '.';
1119 if(len > 3)
1120 buf[len - 3] = '.';
1121 }
1122 if(w > dc.w)
1123 return; /* too long */
1124 gcv.foreground = col[ColFG];
1125 if(dc.font.set) {
1126 XChangeGC(dpy, dc.gc, GCForeground, &gcv);
1127 XmbDrawString(dpy, dc.drawable, dc.font.set, dc.gc, x, y, buf, len);
1128 } else {
1129 gcv.font = dc.font.xfont->fid;
1130 XChangeGC(dpy, dc.gc, GCForeground | GCFont, &gcv);
1131 XDrawString(dpy, dc.drawable, dc.gc, x, y, buf, len);
1132 }
1133 }
1137 void
1138 drawstatus(void) {
1139 int i, x;
1141 dc.x = dc.y = 0;
1142 for(i = 0; i < ntags; i++) {
1143 dc.w = textw(tags[i]);
1144 drawtext(tags[i], (seltag[i] ? dc.sel : dc.norm));
1145 dc.x += dc.w + 1;
1146 }
1147 dc.w = bmw;
1148 drawtext("", dc.norm);
1149 x = dc.x + dc.w;
1150 dc.w = textw(stext);
1151 dc.x = sw - dc.w;
1152 if(dc.x < x) {
1153 dc.x = x;
1154 dc.w = sw - x;
1155 }
1156 drawtext(stext, dc.norm);
1157 if((dc.w = dc.x - x) > bh) {
1158 dc.x = x;
1159 drawtext(sel ? sel->name : NULL, dc.norm);
1160 }
1161 XCopyArea(dpy, dc.drawable, barwin, dc.gc, 0, 0, sw, bh, 0, 0);
1162 XSync(dpy, False);
1163 }
1165 unsigned long
1166 getcolor(const char *colstr) {
1167 Colormap cmap = DefaultColormap(dpy, screen);
1168 XColor color;
1170 if(!XAllocNamedColor(dpy, cmap, colstr, &color, &color))
1171 eprint("error, cannot allocate color '%s'\n", colstr);
1172 return color.pixel;
1173 }
1175 void
1176 setfont(const char *fontstr) {
1177 char *def, **missing;
1178 int i, n;
1180 missing = NULL;
1181 if(dc.font.set)
1182 XFreeFontSet(dpy, dc.font.set);
1183 dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
1184 if(missing) {
1185 while(n--)
1186 fprintf(stderr, "missing fontset: %s\n", missing[n]);
1187 XFreeStringList(missing);
1188 }
1189 if(dc.font.set) {
1190 XFontSetExtents *font_extents;
1191 XFontStruct **xfonts;
1192 char **font_names;
1193 dc.font.ascent = dc.font.descent = 0;
1194 font_extents = XExtentsOfFontSet(dc.font.set);
1195 n = XFontsOfFontSet(dc.font.set, &xfonts, &font_names);
1196 for(i = 0, dc.font.ascent = 0, dc.font.descent = 0; i < n; i++) {
1197 if(dc.font.ascent < (*xfonts)->ascent)
1198 dc.font.ascent = (*xfonts)->ascent;
1199 if(dc.font.descent < (*xfonts)->descent)
1200 dc.font.descent = (*xfonts)->descent;
1201 xfonts++;
1202 }
1203 } else {
1204 if(dc.font.xfont)
1205 XFreeFont(dpy, dc.font.xfont);
1206 dc.font.xfont = NULL;
1207 if(!(dc.font.xfont = XLoadQueryFont(dpy, fontstr)))
1208 eprint("error, cannot load font: '%s'\n", fontstr);
1209 dc.font.ascent = dc.font.xfont->ascent;
1210 dc.font.descent = dc.font.xfont->descent;
1211 }
1212 dc.font.height = dc.font.ascent + dc.font.descent;
1213 }
1215 unsigned int
1216 textw(const char *text) {
1217 return textnw(text, strlen(text)) + dc.font.height;
1218 }
1230 /* from client.c */
1231 /* static */
1233 static void
1234 detachstack(Client *c) {
1235 Client **tc;
1236 for(tc=&stack; *tc && *tc != c; tc=&(*tc)->snext);
1237 *tc = c->snext;
1238 }
1240 static void
1241 grabbuttons(Client *c, Bool focused) {
1242 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
1244 if(focused) {
1245 XGrabButton(dpy, Button1, MODKEY, c->win, False, BUTTONMASK,
1246 GrabModeAsync, GrabModeSync, None, None);
1247 XGrabButton(dpy, Button1, MODKEY | LockMask, c->win, False, BUTTONMASK,
1248 GrabModeAsync, GrabModeSync, None, None);
1249 XGrabButton(dpy, Button1, MODKEY | numlockmask, c->win, False, BUTTONMASK,
1250 GrabModeAsync, GrabModeSync, None, None);
1251 XGrabButton(dpy, Button1, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
1252 GrabModeAsync, GrabModeSync, None, None);
1254 XGrabButton(dpy, Button2, MODKEY, c->win, False, BUTTONMASK,
1255 GrabModeAsync, GrabModeSync, None, None);
1256 XGrabButton(dpy, Button2, MODKEY | LockMask, c->win, False, BUTTONMASK,
1257 GrabModeAsync, GrabModeSync, None, None);
1258 XGrabButton(dpy, Button2, MODKEY | numlockmask, c->win, False, BUTTONMASK,
1259 GrabModeAsync, GrabModeSync, None, None);
1260 XGrabButton(dpy, Button2, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
1261 GrabModeAsync, GrabModeSync, None, None);
1263 XGrabButton(dpy, Button3, MODKEY, c->win, False, BUTTONMASK,
1264 GrabModeAsync, GrabModeSync, None, None);
1265 XGrabButton(dpy, Button3, MODKEY | LockMask, c->win, False, BUTTONMASK,
1266 GrabModeAsync, GrabModeSync, None, None);
1267 XGrabButton(dpy, Button3, MODKEY | numlockmask, c->win, False, BUTTONMASK,
1268 GrabModeAsync, GrabModeSync, None, None);
1269 XGrabButton(dpy, Button3, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
1270 GrabModeAsync, GrabModeSync, None, None);
1271 } else {
1272 XGrabButton(dpy, AnyButton, AnyModifier, c->win, False, BUTTONMASK,
1273 GrabModeAsync, GrabModeSync, None, None);
1274 }
1275 }
1277 static void
1278 setclientstate(Client *c, long state) {
1279 long data[] = {state, None};
1280 XChangeProperty(dpy, c->win, wmatom[WMState], wmatom[WMState], 32,
1281 PropModeReplace, (unsigned char *)data, 2);
1282 }
1284 static int
1285 xerrordummy(Display *dsply, XErrorEvent *ee) {
1286 return 0;
1287 }
1291 void
1292 configure(Client *c) {
1293 XEvent synev;
1295 synev.type = ConfigureNotify;
1296 synev.xconfigure.display = dpy;
1297 synev.xconfigure.event = c->win;
1298 synev.xconfigure.window = c->win;
1299 synev.xconfigure.x = c->x;
1300 synev.xconfigure.y = c->y;
1301 synev.xconfigure.width = c->w;
1302 synev.xconfigure.height = c->h;
1303 synev.xconfigure.border_width = c->border;
1304 synev.xconfigure.above = None;
1305 XSendEvent(dpy, c->win, True, NoEventMask, &synev);
1306 }
1308 void
1309 focus(Client *c) {
1310 if(c && !isvisible(c))
1311 return;
1312 if(sel && sel != c) {
1313 grabbuttons(sel, False);
1314 XSetWindowBorder(dpy, sel->win, dc.norm[ColBorder]);
1315 }
1316 if(c) {
1317 detachstack(c);
1318 c->snext = stack;
1319 stack = c;
1320 grabbuttons(c, True);
1321 }
1322 sel = c;
1323 drawstatus();
1324 if(!selscreen)
1325 return;
1326 if(c) {
1327 XSetWindowBorder(dpy, c->win, dc.sel[ColBorder]);
1328 XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
1329 } else {
1330 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
1331 }
1332 }
1334 Client *
1335 getclient(Window w) {
1336 Client *c;
1338 for(c = clients; c; c = c->next) {
1339 if(c->win == w) {
1340 return c;
1341 }
1342 }
1343 return NULL;
1344 }
1346 Bool
1347 isprotodel(Client *c) {
1348 int i, n;
1349 Atom *protocols;
1350 Bool ret = False;
1352 if(XGetWMProtocols(dpy, c->win, &protocols, &n)) {
1353 for(i = 0; !ret && i < n; i++)
1354 if(protocols[i] == wmatom[WMDelete])
1355 ret = True;
1356 XFree(protocols);
1357 }
1358 return ret;
1359 }
1361 void
1362 killclient(Arg *arg) {
1363 if(!sel)
1364 return;
1365 if(isprotodel(sel))
1366 sendevent(sel->win, wmatom[WMProtocols], wmatom[WMDelete]);
1367 else
1368 XKillClient(dpy, sel->win);
1369 }
1371 void
1372 manage(Window w, XWindowAttributes *wa) {
1373 Client *c;
1374 Window trans;
1376 c = emallocz(sizeof(Client));
1377 c->tags = emallocz(ntags * sizeof(Bool));
1378 c->win = w;
1379 c->x = wa->x;
1380 c->y = wa->y;
1381 c->w = wa->width;
1382 c->h = wa->height;
1383 if(c->w == sw && c->h == sh) {
1384 c->border = 0;
1385 c->x = sx;
1386 c->y = sy;
1387 } else {
1388 c->border = BORDERPX;
1389 if(c->x + c->w + 2 * c->border > wax + waw)
1390 c->x = wax + waw - c->w - 2 * c->border;
1391 if(c->y + c->h + 2 * c->border > way + wah)
1392 c->y = way + wah - c->h - 2 * c->border;
1393 if(c->x < wax)
1394 c->x = wax;
1395 if(c->y < way)
1396 c->y = way;
1397 }
1398 updatesizehints(c);
1399 XSelectInput(dpy, c->win,
1400 StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
1401 XGetTransientForHint(dpy, c->win, &trans);
1402 grabbuttons(c, False);
1403 XSetWindowBorder(dpy, c->win, dc.norm[ColBorder]);
1404 updatetitle(c);
1405 settags(c, getclient(trans));
1406 if(!c->isfloat)
1407 c->isfloat = trans || c->isfixed;
1408 if(clients)
1409 clients->prev = c;
1410 c->next = clients;
1411 c->snext = stack;
1412 stack = clients = c;
1413 XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
1414 XMapWindow(dpy, c->win);
1415 setclientstate(c, NormalState);
1416 if(isvisible(c))
1417 focus(c);
1418 arrange();
1419 }
1421 void
1422 resize(Client *c, Bool sizehints) {
1423 float actual, dx, dy, max, min;
1424 XWindowChanges wc;
1426 if(c->w <= 0 || c->h <= 0)
1427 return;
1428 if(sizehints) {
1429 if(c->minw && c->w < c->minw)
1430 c->w = c->minw;
1431 if(c->minh && c->h < c->minh)
1432 c->h = c->minh;
1433 if(c->maxw && c->w > c->maxw)
1434 c->w = c->maxw;
1435 if(c->maxh && c->h > c->maxh)
1436 c->h = c->maxh;
1437 /* inspired by algorithm from fluxbox */
1438 if(c->minay > 0 && c->maxay && (c->h - c->baseh) > 0) {
1439 dx = (float)(c->w - c->basew);
1440 dy = (float)(c->h - c->baseh);
1441 min = (float)(c->minax) / (float)(c->minay);
1442 max = (float)(c->maxax) / (float)(c->maxay);
1443 actual = dx / dy;
1444 if(max > 0 && min > 0 && actual > 0) {
1445 if(actual < min) {
1446 dy = (dx * min + dy) / (min * min + 1);
1447 dx = dy * min;
1448 c->w = (int)dx + c->basew;
1449 c->h = (int)dy + c->baseh;
1450 }
1451 else if(actual > max) {
1452 dy = (dx * min + dy) / (max * max + 1);
1453 dx = dy * min;
1454 c->w = (int)dx + c->basew;
1455 c->h = (int)dy + c->baseh;
1456 }
1457 }
1458 }
1459 if(c->incw)
1460 c->w -= (c->w - c->basew) % c->incw;
1461 if(c->inch)
1462 c->h -= (c->h - c->baseh) % c->inch;
1463 }
1464 if(c->w == sw && c->h == sh)
1465 c->border = 0;
1466 else
1467 c->border = BORDERPX;
1468 /* offscreen appearance fixes */
1469 if(c->x > sw)
1470 c->x = sw - c->w - 2 * c->border;
1471 if(c->y > sh)
1472 c->y = sh - c->h - 2 * c->border;
1473 if(c->x + c->w + 2 * c->border < sx)
1474 c->x = sx;
1475 if(c->y + c->h + 2 * c->border < sy)
1476 c->y = sy;
1477 wc.x = c->x;
1478 wc.y = c->y;
1479 wc.width = c->w;
1480 wc.height = c->h;
1481 wc.border_width = c->border;
1482 XConfigureWindow(dpy, c->win, CWX | CWY | CWWidth | CWHeight | CWBorderWidth, &wc);
1483 configure(c);
1484 XSync(dpy, False);
1485 }
1487 void
1488 updatesizehints(Client *c) {
1489 long msize;
1490 XSizeHints size;
1492 if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
1493 size.flags = PSize;
1494 c->flags = size.flags;
1495 if(c->flags & PBaseSize) {
1496 c->basew = size.base_width;
1497 c->baseh = size.base_height;
1498 } else {
1499 c->basew = c->baseh = 0;
1500 }
1501 if(c->flags & PResizeInc) {
1502 c->incw = size.width_inc;
1503 c->inch = size.height_inc;
1504 } else {
1505 c->incw = c->inch = 0;
1506 }
1507 if(c->flags & PMaxSize) {
1508 c->maxw = size.max_width;
1509 c->maxh = size.max_height;
1510 } else {
1511 c->maxw = c->maxh = 0;
1512 }
1513 if(c->flags & PMinSize) {
1514 c->minw = size.min_width;
1515 c->minh = size.min_height;
1516 } else {
1517 c->minw = c->minh = 0;
1518 }
1519 if(c->flags & PAspect) {
1520 c->minax = size.min_aspect.x;
1521 c->minay = size.min_aspect.y;
1522 c->maxax = size.max_aspect.x;
1523 c->maxay = size.max_aspect.y;
1524 } else {
1525 c->minax = c->minay = c->maxax = c->maxay = 0;
1526 }
1527 c->isfixed = (c->maxw && c->minw && c->maxh && c->minh &&
1528 c->maxw == c->minw && c->maxh == c->minh);
1529 }
1531 void
1532 updatetitle(Client *c) {
1533 char **list = NULL;
1534 int n;
1535 XTextProperty name;
1537 name.nitems = 0;
1538 c->name[0] = 0;
1539 XGetTextProperty(dpy, c->win, &name, netatom[NetWMName]);
1540 if(!name.nitems)
1541 XGetWMName(dpy, c->win, &name);
1542 if(!name.nitems)
1543 return;
1544 if(name.encoding == XA_STRING)
1545 strncpy(c->name, (char *)name.value, sizeof c->name);
1546 else {
1547 if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success && n > 0 && *list) {
1548 strncpy(c->name, *list, sizeof c->name);
1549 XFreeStringList(list);
1550 }
1551 }
1552 XFree(name.value);
1553 }
1555 void
1556 unmanage(Client *c) {
1557 Client *nc;
1559 /* The server grab construct avoids race conditions. */
1560 XGrabServer(dpy);
1561 XSetErrorHandler(xerrordummy);
1562 detach(c);
1563 detachstack(c);
1564 if(sel == c) {
1565 for(nc = stack; nc && !isvisible(nc); nc = nc->snext);
1566 focus(nc);
1567 }
1568 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
1569 setclientstate(c, WithdrawnState);
1570 free(c->tags);
1571 free(c);
1572 XSync(dpy, False);
1573 XSetErrorHandler(xerror);
1574 XUngrabServer(dpy);
1575 arrange();
1576 }
1596 /* static */
1599 static void
1600 cleanup(void) {
1601 close(STDIN_FILENO);
1602 while(stack) {
1603 resize(stack, True);
1604 unmanage(stack);
1605 }
1606 if(dc.font.set)
1607 XFreeFontSet(dpy, dc.font.set);
1608 else
1609 XFreeFont(dpy, dc.font.xfont);
1610 XUngrabKey(dpy, AnyKey, AnyModifier, root);
1611 XFreePixmap(dpy, dc.drawable);
1612 XFreeGC(dpy, dc.gc);
1613 XDestroyWindow(dpy, barwin);
1614 XFreeCursor(dpy, cursor[CurNormal]);
1615 XFreeCursor(dpy, cursor[CurResize]);
1616 XFreeCursor(dpy, cursor[CurMove]);
1617 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
1618 XSync(dpy, False);
1619 free(seltag);
1620 }
1622 static void
1623 scan(void) {
1624 unsigned int i, num;
1625 Window *wins, d1, d2;
1626 XWindowAttributes wa;
1628 wins = NULL;
1629 if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
1630 for(i = 0; i < num; i++) {
1631 if(!XGetWindowAttributes(dpy, wins[i], &wa))
1632 continue;
1633 if(wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
1634 continue;
1635 if(wa.map_state == IsViewable)
1636 manage(wins[i], &wa);
1637 }
1638 }
1639 if(wins)
1640 XFree(wins);
1641 }
1643 static void
1644 setup(void) {
1645 int i, j;
1646 unsigned int mask;
1647 Window w;
1648 XModifierKeymap *modmap;
1649 XSetWindowAttributes wa;
1651 /* init atoms */
1652 wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
1653 wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
1654 wmatom[WMState] = XInternAtom(dpy, "WM_STATE", False);
1655 netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
1656 netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
1657 XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
1658 PropModeReplace, (unsigned char *) netatom, NetLast);
1659 /* init cursors */
1660 cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
1661 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
1662 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
1663 /* init modifier map */
1664 numlockmask = 0;
1665 modmap = XGetModifierMapping(dpy);
1666 for (i = 0; i < 8; i++) {
1667 for (j = 0; j < modmap->max_keypermod; j++) {
1668 if(modmap->modifiermap[i * modmap->max_keypermod + j] == XKeysymToKeycode(dpy, XK_Num_Lock))
1669 numlockmask = (1 << i);
1670 }
1671 }
1672 XFreeModifiermap(modmap);
1673 /* select for events */
1674 wa.event_mask = SubstructureRedirectMask | SubstructureNotifyMask
1675 | EnterWindowMask | LeaveWindowMask;
1676 wa.cursor = cursor[CurNormal];
1677 XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);
1678 grabkeys();
1679 initrregs();
1680 for(ntags = 0; tags[ntags]; ntags++);
1681 seltag = emallocz(sizeof(Bool) * ntags);
1682 seltag[0] = True;
1683 /* style */
1684 dc.norm[ColBorder] = getcolor(NORMBORDERCOLOR);
1685 dc.norm[ColBG] = getcolor(NORMBGCOLOR);
1686 dc.norm[ColFG] = getcolor(NORMFGCOLOR);
1687 dc.sel[ColBorder] = getcolor(SELBORDERCOLOR);
1688 dc.sel[ColBG] = getcolor(SELBGCOLOR);
1689 dc.sel[ColFG] = getcolor(SELFGCOLOR);
1690 setfont(FONT);
1691 /* geometry */
1692 sx = sy = 0;
1693 sw = DisplayWidth(dpy, screen);
1694 sh = DisplayHeight(dpy, screen);
1695 nmaster = NMASTER;
1696 bmw = 1;
1697 /* bar */
1698 dc.h = bh = dc.font.height + 2;
1699 wa.override_redirect = 1;
1700 wa.background_pixmap = ParentRelative;
1701 wa.event_mask = ButtonPressMask | ExposureMask;
1702 barwin = XCreateWindow(dpy, root, sx, sy, sw, bh, 0,
1703 DefaultDepth(dpy, screen), CopyFromParent, DefaultVisual(dpy, screen),
1704 CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
1705 XDefineCursor(dpy, barwin, cursor[CurNormal]);
1706 XMapRaised(dpy, barwin);
1707 strcpy(stext, "dwm-"VERSION);
1708 /* windowarea */
1709 wax = sx;
1710 way = sy + bh;
1711 wah = sh - bh;
1712 waw = sw;
1713 /* pixmap for everything */
1714 dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
1715 dc.gc = XCreateGC(dpy, root, 0, 0);
1716 XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
1717 /* multihead support */
1718 selscreen = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask);
1719 }
1721 /*
1722 * Startup Error handler to check if another window manager
1723 * is already running.
1724 */
1725 static int
1726 xerrorstart(Display *dsply, XErrorEvent *ee) {
1727 otherwm = True;
1728 return -1;
1729 }
1733 void
1734 sendevent(Window w, Atom a, long value) {
1735 XEvent e;
1737 e.type = ClientMessage;
1738 e.xclient.window = w;
1739 e.xclient.message_type = a;
1740 e.xclient.format = 32;
1741 e.xclient.data.l[0] = value;
1742 e.xclient.data.l[1] = CurrentTime;
1743 XSendEvent(dpy, w, False, NoEventMask, &e);
1744 XSync(dpy, False);
1745 }
1747 void
1748 quit(Arg *arg) {
1749 readin = running = False;
1750 }
1752 /* There's no way to check accesses to destroyed windows, thus those cases are
1753 * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
1754 * default error handler, which may call exit.
1755 */
1756 int
1757 xerror(Display *dpy, XErrorEvent *ee) {
1758 if(ee->error_code == BadWindow
1759 || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
1760 || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
1761 || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
1762 || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
1763 || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
1764 || (ee->request_code == X_GrabKey && ee->error_code == BadAccess)
1765 || (ee->request_code == X_CopyArea && ee->error_code == BadDrawable))
1766 return 0;
1767 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
1768 ee->request_code, ee->error_code);
1769 return xerrorxlib(dpy, ee); /* may call exit */
1770 }
1772 int
1773 main(int argc, char *argv[]) {
1774 char *p;
1775 int r, xfd;
1776 fd_set rd;
1778 if(argc == 2 && !strncmp("-v", argv[1], 3)) {
1779 fputs("dwm-"VERSION", (C)opyright MMVI-MMVII Anselm R. Garbe\n", stdout);
1780 exit(EXIT_SUCCESS);
1781 }
1782 else if(argc != 1)
1783 eprint("usage: dwm [-v]\n");
1784 setlocale(LC_CTYPE, "");
1785 dpy = XOpenDisplay(0);
1786 if(!dpy)
1787 eprint("dwm: cannot open display\n");
1788 xfd = ConnectionNumber(dpy);
1789 screen = DefaultScreen(dpy);
1790 root = RootWindow(dpy, screen);
1791 otherwm = False;
1792 XSetErrorHandler(xerrorstart);
1793 /* this causes an error if some other window manager is running */
1794 XSelectInput(dpy, root, SubstructureRedirectMask);
1795 XSync(dpy, False);
1796 if(otherwm)
1797 eprint("dwm: another window manager is already running\n");
1799 XSync(dpy, False);
1800 XSetErrorHandler(NULL);
1801 xerrorxlib = XSetErrorHandler(xerror);
1802 XSync(dpy, False);
1803 setup();
1804 drawstatus();
1805 scan();
1807 /* main event loop, also reads status text from stdin */
1808 XSync(dpy, False);
1809 procevent();
1810 readin = True;
1811 while(running) {
1812 FD_ZERO(&rd);
1813 if(readin)
1814 FD_SET(STDIN_FILENO, &rd);
1815 FD_SET(xfd, &rd);
1816 if(select(xfd + 1, &rd, NULL, NULL, NULL) == -1) {
1817 if(errno == EINTR)
1818 continue;
1819 eprint("select failed\n");
1820 }
1821 if(FD_ISSET(STDIN_FILENO, &rd)) {
1822 switch(r = read(STDIN_FILENO, stext, sizeof stext - 1)) {
1823 case -1:
1824 strncpy(stext, strerror(errno), sizeof stext - 1);
1825 stext[sizeof stext - 1] = '\0';
1826 readin = False;
1827 break;
1828 case 0:
1829 strncpy(stext, "EOF", 4);
1830 readin = False;
1831 break;
1832 default:
1833 for(stext[r] = '\0', p = stext + strlen(stext) - 1; p >= stext && *p == '\n'; *p-- = '\0');
1834 for(; p >= stext && *p != '\n'; --p);
1835 if(p > stext)
1836 strncpy(stext, p + 1, sizeof stext);
1837 }
1838 drawstatus();
1839 }
1840 if(FD_ISSET(xfd, &rd))
1841 procevent();
1842 }
1843 cleanup();
1844 XCloseDisplay(dpy);
1845 return 0;
1846 }