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