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, Bool invert, 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(unsigned int monitor, unsigned int t);
168Bool isprotodel(Client *c);
169Bool isurgent(unsigned int monitor, unsigned int t);
170Bool isvisible(Client *c, int monitor);
171void keypress(XEvent *e);
172void killclient(const char *arg);
173void manage(Window w, XWindowAttributes *wa);
174void mappingnotify(XEvent *e);
175void maprequest(XEvent *e);
176void movemouse(Client *c);
177Client *nexttiled(Client *c, int monitor);
178void propertynotify(XEvent *e);
179void quit(const char *arg);
180void reapply(const char *arg);
181void resize(Client *c, int x, int y, int w, int h, Bool sizehints);
182void resizemouse(Client *c);
183void restack(void);
184void run(void);
185void scan(void);
186void setclientstate(Client *c, long state);
187void setlayout(const char *arg);
188void setmwfact(const char *arg);
189void setup(void);
190void spawn(const char *arg);
191void tag(const char *arg);
192unsigned int textnw(Monitor*, const char *text, unsigned int len);
193unsigned int textw(Monitor*, const char *text);
194void tile(void);
195void togglebar(const char *arg);
196void togglefloating(const char *arg);
197void toggletag(const char *arg);
198void toggleview(const char *arg);
199void unban(Client *c);
200void unmanage(Client *c);
201void unmapnotify(XEvent *e);
202void updatebarpos(Monitor *m);
203void updatesizehints(Client *c);
204void updatetitle(Client *c);
205void updatewmhints(Client *c);
206void view(const char *arg);
207void viewprevtag(const char *arg); /* views previous selected tags */
208int xerror(Display *dpy, XErrorEvent *ee);
209int xerrordummy(Display *dsply, XErrorEvent *ee);
210int xerrorstart(Display *dsply, XErrorEvent *ee);
211void zoom(const char *arg);
212int monitorat(void);
213void movetomonitor(const char *arg);
214void selectmonitor(const char *arg);
215
216/* variables */
217char stext[256];
218int mcount = 1;
219int (*xerrorxlib)(Display *, XErrorEvent *);
220unsigned int bh, bpos;
221unsigned int blw = 0;
222unsigned int numlockmask = 0;
223void (*handler[LASTEvent]) (XEvent *) = {
224 [ButtonPress] = buttonpress,
225 [ConfigureRequest] = configurerequest,
226 [ConfigureNotify] = configurenotify,
227 [DestroyNotify] = destroynotify,
228 [EnterNotify] = enternotify,
229 [Expose] = expose,
230 [FocusIn] = focusin,
231 [KeyPress] = keypress,
232 [MappingNotify] = mappingnotify,
233 [MapRequest] = maprequest,
234 [PropertyNotify] = propertynotify,
235 [UnmapNotify] = unmapnotify
236};
237Atom wmatom[WMLast], netatom[NetLast];
238Bool isxinerama = False;
239Bool domwfact = True;
240Bool dozoom = True;
241Bool otherwm, readin;
242Bool running = True;
243Client *clients = NULL;
244Client *sel = NULL;
245Client *stack = NULL;
246Cursor cursor[CurLast];
247Display *dpy;
248DC dc = {0};
249Regs *regs = NULL;
250Monitor *monitors;
251int selmonitor = 0;
252
253/* configuration, allows nested code to access above variables */
254#include "config.h"
255
256//Bool prevtags[LENGTH(tags)];
257
258/* function implementations */
259void
260applyrules(Client *c) {
261 static char buf[512];
262 unsigned int i, j;
263 regmatch_t tmp;
264 Bool matched_tag = False;
265 Bool matched_monitor = False;
266 XClassHint ch = { 0 };
267
268 /* rule matching */
269 XGetClassHint(dpy, c->win, &ch);
270 snprintf(buf, sizeof buf, "%s:%s:%s",
271 ch.res_class ? ch.res_class : "",
272 ch.res_name ? ch.res_name : "", c->name);
273 for(i = 0; i < LENGTH(rules); i++)
274 if(regs[i].propregex && !regexec(regs[i].propregex, buf, 1, &tmp, 0)) {
275 if (rules[i].monitor >= 0 && rules[i].monitor < mcount) {
276 matched_monitor = True;
277 c->monitor = rules[i].monitor;
278 }
279
280 c->isfloating = rules[i].isfloating;
281 for(j = 0; regs[i].tagregex && j < LENGTH(tags); j++) {
282 if(!regexec(regs[i].tagregex, tags[j], 1, &tmp, 0)) {
283 matched_tag = True;
284 c->tags[j] = True;
285 }
286 }
287 }
288 if(ch.res_class)
289 XFree(ch.res_class);
290 if(ch.res_name)
291 XFree(ch.res_name);
292 if(!matched_tag)
293 memcpy(c->tags, monitors[monitorat()].seltags, sizeof initags);
294 if (!matched_monitor)
295 c->monitor = monitorat();
296}
297
298void
299arrange(void) {
300 Client *c;
301
302 for(c = clients; c; c = c->next)
303 if(isvisible(c, c->monitor))
304 unban(c);
305 else
306 ban(c);
307
308 monitors[selmonitor].layout->arrange();
309 focus(NULL);
310 restack();
311}
312
313void
314attach(Client *c) {
315 if(clients)
316 clients->prev = c;
317 c->next = clients;
318 clients = c;
319}
320
321void
322attachstack(Client *c) {
323 c->snext = stack;
324 stack = c;
325}
326
327void
328ban(Client *c) {
329 if(c->isbanned)
330 return;
331 XMoveWindow(dpy, c->win, c->x + 3 * monitors[c->monitor].sw, c->y);
332 c->isbanned = True;
333}
334
335void
336buttonpress(XEvent *e) {
337 unsigned int i, x;
338 Client *c;
339 XButtonPressedEvent *ev = &e->xbutton;
340
341 Monitor *m = &monitors[monitorat()];
342
343 if(ev->window == m->barwin) {
344 x = 0;
345 for(i = 0; i < LENGTH(tags); i++) {
346 x += textw(m, tags[i]);
347 if(ev->x < x) {
348 if(ev->button == Button1) {
349 if(ev->state & MODKEY)
350 tag(tags[i]);
351 else
352 view(tags[i]);
353 }
354 else if(ev->button == Button3) {
355 if(ev->state & MODKEY)
356 toggletag(tags[i]);
357 else
358 toggleview(tags[i]);
359 }
360 return;
361 }
362 }
363 if((ev->x < x + blw) && ev->button == Button1)
364 setlayout(NULL);
365 }
366 else if((c = getclient(ev->window))) {
367 focus(c);
368 if(CLEANMASK(ev->state) != MODKEY)
369 return;
370 if(ev->button == Button1) {
371 restack();
372 movemouse(c);
373 }
374 else if(ev->button == Button2) {
375 if((floating != m->layout->arrange) && c->isfloating)
376 togglefloating(NULL);
377 else
378 zoom(NULL);
379 }
380 else if(ev->button == Button3 && !c->isfixed) {
381 restack();
382 resizemouse(c);
383 }
384 }
385}
386
387void
388checkotherwm(void) {
389 otherwm = False;
390 XSetErrorHandler(xerrorstart);
391
392 /* this causes an error if some other window manager is running */
393 XSelectInput(dpy, DefaultRootWindow(dpy), SubstructureRedirectMask);
394 XSync(dpy, False);
395 if(otherwm)
396 eprint("dwm: another window manager is already running\n");
397 XSync(dpy, False);
398 XSetErrorHandler(NULL);
399 xerrorxlib = XSetErrorHandler(xerror);
400 XSync(dpy, False);
401}
402
403void
404cleanup(void) {
405 unsigned int i;
406 close(STDIN_FILENO);
407 while(stack) {
408 unban(stack);
409 unmanage(stack);
410 }
411 for(i = 0; i < mcount; i++) {
412 Monitor *m = &monitors[i];
413 if(m->dc.font.set)
414 XFreeFontSet(dpy, m->dc.font.set);
415 else
416 XFreeFont(dpy, m->dc.font.xfont);
417 XUngrabKey(dpy, AnyKey, AnyModifier, m->root);
418 XFreePixmap(dpy, m->dc.drawable);
419 XFreeGC(dpy, m->dc.gc);
420 XDestroyWindow(dpy, m->barwin);
421 XFreeCursor(dpy, cursor[CurNormal]);
422 XFreeCursor(dpy, cursor[CurResize]);
423 XFreeCursor(dpy, cursor[CurMove]);
424 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
425 XSync(dpy, False);
426 }
427}
428
429void
430compileregs(void) {
431 unsigned int i;
432 regex_t *reg;
433
434 if(regs)
435 return;
436 regs = emallocz(LENGTH(rules) * sizeof(Regs));
437 for(i = 0; i < LENGTH(rules); i++) {
438 if(rules[i].prop) {
439 reg = emallocz(sizeof(regex_t));
440 if(regcomp(reg, rules[i].prop, REG_EXTENDED))
441 free(reg);
442 else
443 regs[i].propregex = reg;
444 }
445 if(rules[i].tags) {
446 reg = emallocz(sizeof(regex_t));
447 if(regcomp(reg, rules[i].tags, REG_EXTENDED))
448 free(reg);
449 else
450 regs[i].tagregex = reg;
451 }
452 }
453}
454
455void
456configure(Client *c) {
457 XConfigureEvent ce;
458
459 ce.type = ConfigureNotify;
460 ce.display = dpy;
461 ce.event = c->win;
462 ce.window = c->win;
463 ce.x = c->x;
464 ce.y = c->y;
465 ce.width = c->w;
466 ce.height = c->h;
467 ce.border_width = c->border;
468 ce.above = None;
469 ce.override_redirect = False;
470 XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&ce);
471}
472
473void
474configurenotify(XEvent *e) {
475 XConfigureEvent *ev = &e->xconfigure;
476 Monitor *m = &monitors[selmonitor];
477
478 if(ev->window == m->root && (ev->width != m->sw || ev->height != m->sh)) {
479 m->sw = ev->width;
480 m->sh = ev->height;
481 XFreePixmap(dpy, dc.drawable);
482 dc.drawable = XCreatePixmap(dpy, m->root, m->sw, bh, DefaultDepth(dpy, m->screen));
483 XResizeWindow(dpy, m->barwin, m->sw, bh);
484 updatebarpos(m);
485 arrange();
486 }
487}
488
489void
490configurerequest(XEvent *e) {
491 Client *c;
492 XConfigureRequestEvent *ev = &e->xconfigurerequest;
493 XWindowChanges wc;
494
495 if((c = getclient(ev->window))) {
496 Monitor *m = &monitors[c->monitor];
497 if(ev->value_mask & CWBorderWidth)
498 c->border = ev->border_width;
499 if(c->isfixed || c->isfloating || (floating == m->layout->arrange)) {
500 if(ev->value_mask & CWX)
501 c->x = m->sx+ev->x;
502 if(ev->value_mask & CWY)
503 c->y = m->sy+ev->y;
504 if(ev->value_mask & CWWidth)
505 c->w = ev->width;
506 if(ev->value_mask & CWHeight)
507 c->h = ev->height;
508 if((c->x - m->sx + c->w) > m->sw && c->isfloating)
509 c->x = m->sx + (m->sw / 2 - c->w / 2); /* center in x direction */
510 if((c->y - m->sy + c->h) > m->sh && c->isfloating)
511 c->y = m->sy + (m->sh / 2 - c->h / 2); /* center in y direction */
512 if((ev->value_mask & (CWX | CWY))
513 && !(ev->value_mask & (CWWidth | CWHeight)))
514 configure(c);
515 if(isvisible(c, monitorat()))
516 XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
517 }
518 else
519 configure(c);
520 }
521 else {
522 wc.x = ev->x;
523 wc.y = ev->y;
524 wc.width = ev->width;
525 wc.height = ev->height;
526 wc.border_width = ev->border_width;
527 wc.sibling = ev->above;
528 wc.stack_mode = ev->detail;
529 XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
530 }
531 XSync(dpy, False);
532}
533
534void
535destroynotify(XEvent *e) {
536 Client *c;
537 XDestroyWindowEvent *ev = &e->xdestroywindow;
538
539 if((c = getclient(ev->window)))
540 unmanage(c);
541}
542
543void
544detach(Client *c) {
545 if(c->prev)
546 c->prev->next = c->next;
547 if(c->next)
548 c->next->prev = c->prev;
549 if(c == clients)
550 clients = c->next;
551 c->next = c->prev = NULL;
552}
553
554void
555detachstack(Client *c) {
556 Client **tc;
557
558 for(tc=&stack; *tc && *tc != c; tc=&(*tc)->snext);
559 *tc = c->snext;
560}
561
562void
563drawbar(void) {
564 int i, j, x;
565 Client *c;
566
567 for(i = 0; i < mcount; i++) {
568 Monitor *m = &monitors[i];
569 m->dc.x = 0;
570 for(c = stack; c && !isvisible(c, i); c = c->snext);
571 fprintf(stderr, "m%d %s\n", i, c ? c->name : "NIL");
572 for(j = 0; j < LENGTH(tags); j++) {
573 m->dc.w = textw(m, tags[j]);
574 if(m->seltags[j]) {
575 drawtext(m, tags[j], m->dc.sel, isurgent(i, j));
576 drawsquare(m, c && c->tags[j] && c->monitor == i,
577 isoccupied(i, j), isurgent(i, j), m->dc.sel);
578 }
579 else {
580 drawtext(m, tags[j], m->dc.norm, isurgent(i, j));
581 drawsquare(m, c && c->tags[j] && c->monitor == i,
582 isoccupied(i, j), isurgent(i, j), m->dc.norm);
583 }
584 m->dc.x += m->dc.w;
585 }
586 m->dc.w = blw;
587 drawtext(m, m->layout->symbol, m->dc.norm, False);
588 x = m->dc.x + m->dc.w;
589 if(i == selmonitor) {
590 m->dc.w = textw(m, stext);
591 m->dc.x = m->sw - m->dc.w;
592 if(m->dc.x < x) {
593 m->dc.x = x;
594 m->dc.w = m->sw - x;
595 }
596 drawtext(m, stext, m->dc.norm, False);
597 }
598 else
599 m->dc.x = m->sw;
600 if((m->dc.w = m->dc.x - x) > bh) {
601 m->dc.x = x;
602 if(c) {
603 drawtext(m, c->name, m->dc.sel, False);
604 drawsquare(m, False, c->isfloating, False, m->dc.sel);
605 }
606 else
607 drawtext(m, NULL, m->dc.norm, False);
608 }
609 XCopyArea(dpy, m->dc.drawable, m->barwin, m->dc.gc, 0, 0, m->sw, bh, 0, 0);
610 XSync(dpy, False);
611 }
612}
613
614void
615drawsquare(Monitor *m, Bool filled, Bool empty, Bool invert, unsigned long col[ColLast]) {
616 int x;
617 XGCValues gcv;
618 XRectangle r = { m->dc.x, m->dc.y, m->dc.w, m->dc.h };
619
620 gcv.foreground = col[invert ? ColBG : ColFG];
621 XChangeGC(dpy, m->dc.gc, GCForeground, &gcv);
622 x = (m->dc.font.ascent + m->dc.font.descent + 2) / 4;
623 r.x = m->dc.x + 1;
624 r.y = m->dc.y + 1;
625 if(filled) {
626 r.width = r.height = x + 1;
627 XFillRectangles(dpy, m->dc.drawable, m->dc.gc, &r, 1);
628 }
629 else if(empty) {
630 r.width = r.height = x;
631 XDrawRectangles(dpy, m->dc.drawable, m->dc.gc, &r, 1);
632 }
633}
634
635void
636drawtext(Monitor *m, const char *text, unsigned long col[ColLast], Bool invert) {
637 int x, y, w, h;
638 static char buf[256];
639 unsigned int len, olen;
640 XRectangle r = { m->dc.x, m->dc.y, m->dc.w, m->dc.h };
641
642 XSetForeground(dpy, m->dc.gc, col[invert ? ColFG : ColBG]);
643 XFillRectangles(dpy, m->dc.drawable, m->dc.gc, &r, 1);
644 if(!text)
645 return;
646 w = 0;
647 olen = len = strlen(text);
648 if(len >= sizeof buf)
649 len = sizeof buf - 1;
650 memcpy(buf, text, len);
651 buf[len] = 0;
652 h = m->dc.font.ascent + m->dc.font.descent;
653 y = m->dc.y + (m->dc.h / 2) - (h / 2) + m->dc.font.ascent;
654 x = m->dc.x + (h / 2);
655 /* shorten text if necessary */
656 while(len && (w = textnw(m, buf, len)) > m->dc.w - h)
657 buf[--len] = 0;
658 if(len < olen) {
659 if(len > 1)
660 buf[len - 1] = '.';
661 if(len > 2)
662 buf[len - 2] = '.';
663 if(len > 3)
664 buf[len - 3] = '.';
665 }
666 if(w > m->dc.w)
667 return; /* too long */
668 XSetForeground(dpy, m->dc.gc, col[invert ? ColBG : ColFG]);
669 if(m->dc.font.set)
670 XmbDrawString(dpy, m->dc.drawable, m->dc.font.set, m->dc.gc, x, y, buf, len);
671 else
672 XDrawString(dpy, m->dc.drawable, m->dc.gc, x, y, buf, len);
673}
674
675void *
676emallocz(unsigned int size) {
677 void *res = calloc(1, size);
678
679 if(!res)
680 eprint("fatal: could not malloc() %u bytes\n", size);
681 return res;
682}
683
684void
685enternotify(XEvent *e) {
686 Client *c;
687 XCrossingEvent *ev = &e->xcrossing;
688
689 if(ev->mode != NotifyNormal || ev->detail == NotifyInferior) {
690 if(!isxinerama || ev->window != monitors[selmonitor].root)
691 return;
692 }
693 if((c = getclient(ev->window)))
694 focus(c);
695 else {
696 selmonitor = monitorat();
697 fprintf(stderr, "updating selmonitor %d\n", selmonitor);
698 focus(NULL);
699 }
700}
701
702void
703eprint(const char *errstr, ...) {
704 va_list ap;
705
706 va_start(ap, errstr);
707 vfprintf(stderr, errstr, ap);
708 va_end(ap);
709 exit(EXIT_FAILURE);
710}
711
712void
713expose(XEvent *e) {
714 XExposeEvent *ev = &e->xexpose;
715
716 if(ev->count == 0) {
717 if(ev->window == monitors[selmonitor].barwin)
718 drawbar();
719 }
720}
721
722void
723floating(void) { /* default floating layout */
724 Client *c;
725
726 domwfact = dozoom = False;
727 for(c = clients; c; c = c->next)
728 if(isvisible(c, selmonitor))
729 resize(c, c->x, c->y, c->w, c->h, True);
730}
731
732void
733focus(Client *c) {
734 Monitor *m;
735
736 if(c)
737 selmonitor = c->monitor;
738 m = &monitors[selmonitor];
739 if(!c || (c && !isvisible(c, selmonitor)))
740 for(c = stack; c && !isvisible(c, c->monitor); c = c->snext);
741 if(sel && sel != c) {
742 grabbuttons(sel, False);
743 XSetWindowBorder(dpy, sel->win, monitors[sel->monitor].dc.norm[ColBorder]);
744 }
745 if(c) {
746 detachstack(c);
747 attachstack(c);
748 grabbuttons(c, True);
749 }
750 sel = c;
751 drawbar();
752 if(c) {
753 XSetWindowBorder(dpy, c->win, m->dc.sel[ColBorder]);
754 XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
755 selmonitor = c->monitor;
756 }
757 else {
758 XSetInputFocus(dpy, m->root, RevertToPointerRoot, CurrentTime);
759 drawbar();
760 }
761}
762
763void
764focusin(XEvent *e) { /* there are some broken focus acquiring clients */
765 XFocusChangeEvent *ev = &e->xfocus;
766
767 if(sel && ev->window != sel->win)
768 XSetInputFocus(dpy, sel->win, RevertToPointerRoot, CurrentTime);
769}
770
771void
772focusnext(const char *arg) {
773 Client *c;
774
775 if(!sel)
776 return;
777 for(c = sel->next; c && !isvisible(c, selmonitor); c = c->next);
778 if(!c)
779 for(c = clients; c && !isvisible(c, selmonitor); c = c->next);
780 if(c) {
781 focus(c);
782 restack();
783 }
784}
785
786void
787focusprev(const char *arg) {
788 Client *c;
789
790 if(!sel)
791 return;
792 for(c = sel->prev; c && !isvisible(c, selmonitor); c = c->prev);
793 if(!c) {
794 for(c = clients; c && c->next; c = c->next);
795 for(; c && !isvisible(c, selmonitor); c = c->prev);
796 }
797 if(c) {
798 focus(c);
799 restack();
800 }
801}
802
803Client *
804getclient(Window w) {
805 Client *c;
806
807 for(c = clients; c && c->win != w; c = c->next);
808 return c;
809}
810
811unsigned long
812getcolor(const char *colstr, int screen) {
813 Colormap cmap = DefaultColormap(dpy, screen);
814 XColor color;
815
816 if(!XAllocNamedColor(dpy, cmap, colstr, &color, &color))
817 eprint("error, cannot allocate color '%s'\n", colstr);
818 return color.pixel;
819}
820
821long
822getstate(Window w) {
823 int format, status;
824 long result = -1;
825 unsigned char *p = NULL;
826 unsigned long n, extra;
827 Atom real;
828
829 status = XGetWindowProperty(dpy, w, wmatom[WMState], 0L, 2L, False, wmatom[WMState],
830 &real, &format, &n, &extra, (unsigned char **)&p);
831 if(status != Success)
832 return -1;
833 if(n != 0)
834 result = *p;
835 XFree(p);
836 return result;
837}
838
839Bool
840gettextprop(Window w, Atom atom, char *text, unsigned int size) {
841 char **list = NULL;
842 int n;
843 XTextProperty name;
844
845 if(!text || size == 0)
846 return False;
847 text[0] = '\0';
848 XGetTextProperty(dpy, w, &name, atom);
849 if(!name.nitems)
850 return False;
851 if(name.encoding == XA_STRING)
852 strncpy(text, (char *)name.value, size - 1);
853 else {
854 if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
855 && n > 0 && *list) {
856 strncpy(text, *list, size - 1);
857 XFreeStringList(list);
858 }
859 }
860 text[size - 1] = '\0';
861 XFree(name.value);
862 return True;
863}
864
865void
866grabbuttons(Client *c, Bool focused) {
867 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
868
869 if(focused) {
870 XGrabButton(dpy, Button1, MODKEY, c->win, False, BUTTONMASK,
871 GrabModeAsync, GrabModeSync, None, None);
872 XGrabButton(dpy, Button1, MODKEY | LockMask, c->win, False, BUTTONMASK,
873 GrabModeAsync, GrabModeSync, None, None);
874 XGrabButton(dpy, Button1, MODKEY | numlockmask, c->win, False, BUTTONMASK,
875 GrabModeAsync, GrabModeSync, None, None);
876 XGrabButton(dpy, Button1, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
877 GrabModeAsync, GrabModeSync, None, None);
878
879 XGrabButton(dpy, Button2, MODKEY, c->win, False, BUTTONMASK,
880 GrabModeAsync, GrabModeSync, None, None);
881 XGrabButton(dpy, Button2, MODKEY | LockMask, c->win, False, BUTTONMASK,
882 GrabModeAsync, GrabModeSync, None, None);
883 XGrabButton(dpy, Button2, MODKEY | numlockmask, c->win, False, BUTTONMASK,
884 GrabModeAsync, GrabModeSync, None, None);
885 XGrabButton(dpy, Button2, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
886 GrabModeAsync, GrabModeSync, None, None);
887
888 XGrabButton(dpy, Button3, MODKEY, c->win, False, BUTTONMASK,
889 GrabModeAsync, GrabModeSync, None, None);
890 XGrabButton(dpy, Button3, MODKEY | LockMask, c->win, False, BUTTONMASK,
891 GrabModeAsync, GrabModeSync, None, None);
892 XGrabButton(dpy, Button3, MODKEY | numlockmask, c->win, False, BUTTONMASK,
893 GrabModeAsync, GrabModeSync, None, None);
894 XGrabButton(dpy, Button3, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
895 GrabModeAsync, GrabModeSync, None, None);
896 }
897 else
898 XGrabButton(dpy, AnyButton, AnyModifier, c->win, False, BUTTONMASK,
899 GrabModeAsync, GrabModeSync, None, None);
900}
901
902void
903grabkeys(void) {
904 unsigned int i, j;
905 KeyCode code;
906 XModifierKeymap *modmap;
907
908 /* init modifier map */
909 modmap = XGetModifierMapping(dpy);
910 for(i = 0; i < 8; i++)
911 for(j = 0; j < modmap->max_keypermod; j++) {
912 if(modmap->modifiermap[i * modmap->max_keypermod + j] == XKeysymToKeycode(dpy, XK_Num_Lock))
913 numlockmask = (1 << i);
914 }
915 XFreeModifiermap(modmap);
916
917 for(i = 0; i < mcount; i++) {
918 Monitor *m = &monitors[i];
919 XUngrabKey(dpy, AnyKey, AnyModifier, m->root);
920 for(j = 0; j < LENGTH(keys); j++) {
921 code = XKeysymToKeycode(dpy, keys[j].keysym);
922 XGrabKey(dpy, code, keys[j].mod, m->root, True,
923 GrabModeAsync, GrabModeAsync);
924 XGrabKey(dpy, code, keys[j].mod | LockMask, m->root, True,
925 GrabModeAsync, GrabModeAsync);
926 XGrabKey(dpy, code, keys[j].mod | numlockmask, m->root, True,
927 GrabModeAsync, GrabModeAsync);
928 XGrabKey(dpy, code, keys[j].mod | numlockmask | LockMask, m->root, True,
929 GrabModeAsync, GrabModeAsync);
930 }
931 }
932}
933
934unsigned int
935idxoftag(const char *tag) {
936 unsigned int i;
937
938 for(i = 0; (i < LENGTH(tags)) && (tags[i] != tag); i++);
939 return (i < LENGTH(tags)) ? i : 0;
940}
941
942void
943initfont(Monitor *m, const char *fontstr) {
944 char *def, **missing;
945 int i, n;
946
947 missing = NULL;
948 if(m->dc.font.set)
949 XFreeFontSet(dpy, m->dc.font.set);
950 m->dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
951 if(missing) {
952 while(n--)
953 fprintf(stderr, "dwm: missing fontset: %s\n", missing[n]);
954 XFreeStringList(missing);
955 }
956 if(m->dc.font.set) {
957 XFontSetExtents *font_extents;
958 XFontStruct **xfonts;
959 char **font_names;
960 m->dc.font.ascent = m->dc.font.descent = 0;
961 font_extents = XExtentsOfFontSet(m->dc.font.set);
962 n = XFontsOfFontSet(m->dc.font.set, &xfonts, &font_names);
963 for(i = 0, m->dc.font.ascent = 0, m->dc.font.descent = 0; i < n; i++) {
964 if(m->dc.font.ascent < (*xfonts)->ascent)
965 m->dc.font.ascent = (*xfonts)->ascent;
966 if(m->dc.font.descent < (*xfonts)->descent)
967 m->dc.font.descent = (*xfonts)->descent;
968 xfonts++;
969 }
970 }
971 else {
972 if(m->dc.font.xfont)
973 XFreeFont(dpy, m->dc.font.xfont);
974 m->dc.font.xfont = NULL;
975 if(!(m->dc.font.xfont = XLoadQueryFont(dpy, fontstr))
976 && !(m->dc.font.xfont = XLoadQueryFont(dpy, "fixed")))
977 eprint("error, cannot load font: '%s'\n", fontstr);
978 m->dc.font.ascent = m->dc.font.xfont->ascent;
979 m->dc.font.descent = m->dc.font.xfont->descent;
980 }
981 m->dc.font.height = m->dc.font.ascent + m->dc.font.descent;
982}
983
984Bool
985isoccupied(unsigned int monitor, unsigned int t) {
986 Client *c;
987
988 for(c = clients; c; c = c->next)
989 if(c->tags[t] && c->monitor == monitor)
990 return True;
991 return False;
992}
993
994Bool
995isprotodel(Client *c) {
996 int i, n;
997 Atom *protocols;
998 Bool ret = False;
999
1000 if(XGetWMProtocols(dpy, c->win, &protocols, &n)) {
1001 for(i = 0; !ret && i < n; i++)
1002 if(protocols[i] == wmatom[WMDelete])
1003 ret = True;
1004 XFree(protocols);
1005 }
1006 return ret;
1007}
1008
1009Bool
1010isurgent(unsigned int monitor, unsigned int t) {
1011 Client *c;
1012
1013 for(c = clients; c; c = c->next)
1014 if(c->monitor == monitor && c->isurgent && c->tags[t])
1015 return True;
1016 return False;
1017}
1018
1019Bool
1020isvisible(Client *c, int monitor) {
1021 unsigned int i;
1022
1023 if(c->monitor != monitor)
1024 return False;
1025 for(i = 0; i < LENGTH(tags); i++)
1026 if(c->tags[i] && monitors[c->monitor].seltags[i])
1027 return True;
1028 return False;
1029}
1030
1031void
1032keypress(XEvent *e) {
1033 unsigned int i;
1034 KeySym keysym;
1035 XKeyEvent *ev;
1036
1037 ev = &e->xkey;
1038 keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
1039 for(i = 0; i < LENGTH(keys); i++)
1040 if(keysym == keys[i].keysym
1041 && CLEANMASK(keys[i].mod) == CLEANMASK(ev->state))
1042 {
1043 if(keys[i].func)
1044 keys[i].func(keys[i].arg);
1045 }
1046}
1047
1048void
1049killclient(const char *arg) {
1050 XEvent ev;
1051
1052 if(!sel)
1053 return;
1054 if(isprotodel(sel)) {
1055 ev.type = ClientMessage;
1056 ev.xclient.window = sel->win;
1057 ev.xclient.message_type = wmatom[WMProtocols];
1058 ev.xclient.format = 32;
1059 ev.xclient.data.l[0] = wmatom[WMDelete];
1060 ev.xclient.data.l[1] = CurrentTime;
1061 XSendEvent(dpy, sel->win, False, NoEventMask, &ev);
1062 }
1063 else
1064 XKillClient(dpy, sel->win);
1065}
1066
1067void
1068manage(Window w, XWindowAttributes *wa) {
1069 Client *c, *t = NULL;
1070 Monitor *m;
1071 Status rettrans;
1072 Window trans;
1073 XWindowChanges wc;
1074
1075 c = emallocz(sizeof(Client));
1076 c->tags = emallocz(sizeof initags);
1077 c->win = w;
1078
1079 applyrules(c);
1080
1081 m = &monitors[c->monitor];
1082
1083 c->x = wa->x + m->sx;
1084 c->y = wa->y + m->sy;
1085 c->w = wa->width;
1086 c->h = wa->height;
1087 c->oldborder = wa->border_width;
1088
1089 if(c->w == m->sw && c->h == m->sh) {
1090 c->x = m->sx;
1091 c->y = m->sy;
1092 c->border = wa->border_width;
1093 }
1094 else {
1095 if(c->x + c->w + 2 * c->border > m->wax + m->waw)
1096 c->x = m->wax + m->waw - c->w - 2 * c->border;
1097 if(c->y + c->h + 2 * c->border > m->way + m->wah)
1098 c->y = m->way + m->wah - c->h - 2 * c->border;
1099 if(c->x < m->wax)
1100 c->x = m->wax;
1101 if(c->y < m->way)
1102 c->y = m->way;
1103 c->border = BORDERPX;
1104 }
1105 wc.border_width = c->border;
1106 XConfigureWindow(dpy, w, CWBorderWidth, &wc);
1107 XSetWindowBorder(dpy, w, m->dc.norm[ColBorder]);
1108 configure(c); /* propagates border_width, if size doesn't change */
1109 updatesizehints(c);
1110 XSelectInput(dpy, w, EnterWindowMask | FocusChangeMask | PropertyChangeMask | StructureNotifyMask);
1111 grabbuttons(c, False);
1112 updatetitle(c);
1113 if((rettrans = XGetTransientForHint(dpy, w, &trans) == Success))
1114 for(t = clients; t && t->win != trans; t = t->next);
1115 if(t)
1116 memcpy(c->tags, t->tags, sizeof initags);
1117 if(!c->isfloating)
1118 c->isfloating = (rettrans == Success) || c->isfixed;
1119 attach(c);
1120 attachstack(c);
1121 XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h); /* some windows require this */
1122 ban(c);
1123 XMapWindow(dpy, c->win);
1124 setclientstate(c, NormalState);
1125 arrange();
1126}
1127
1128void
1129mappingnotify(XEvent *e) {
1130 XMappingEvent *ev = &e->xmapping;
1131
1132 XRefreshKeyboardMapping(ev);
1133 if(ev->request == MappingKeyboard)
1134 grabkeys();
1135}
1136
1137void
1138maprequest(XEvent *e) {
1139 static XWindowAttributes wa;
1140 XMapRequestEvent *ev = &e->xmaprequest;
1141
1142 if(!XGetWindowAttributes(dpy, ev->window, &wa))
1143 return;
1144 if(wa.override_redirect)
1145 return;
1146 if(!getclient(ev->window))
1147 manage(ev->window, &wa);
1148}
1149
1150int
1151monitorat() {
1152 int i, x, y;
1153 Window win;
1154 unsigned int mask;
1155
1156 XQueryPointer(dpy, monitors[selmonitor].root, &win, &win, &x, &y, &i, &i, &mask);
1157 for(i = 0; i < mcount; i++) {
1158 if((x >= monitors[i].sx && x < monitors[i].sx + monitors[i].sw)
1159 && (y >= monitors[i].sy && y < monitors[i].sy + monitors[i].sh)) {
1160 return i;
1161 }
1162 }
1163 return 0;
1164}
1165
1166void
1167movemouse(Client *c) {
1168 int x1, y1, ocx, ocy, di, nx, ny;
1169 unsigned int dui;
1170 Window dummy;
1171 XEvent ev;
1172
1173 ocx = nx = c->x;
1174 ocy = ny = c->y;
1175 if(XGrabPointer(dpy, monitors[selmonitor].root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
1176 None, cursor[CurMove], CurrentTime) != GrabSuccess)
1177 return;
1178 XQueryPointer(dpy, monitors[selmonitor].root, &dummy, &dummy, &x1, &y1, &di, &di, &dui);
1179 for(;;) {
1180 XMaskEvent(dpy, MOUSEMASK | ExposureMask | SubstructureRedirectMask, &ev);
1181 switch (ev.type) {
1182 case ButtonRelease:
1183 XUngrabPointer(dpy, CurrentTime);
1184 return;
1185 case ConfigureRequest:
1186 case Expose:
1187 case MapRequest:
1188 handler[ev.type](&ev);
1189 break;
1190 case MotionNotify:
1191 XSync(dpy, False);
1192 nx = ocx + (ev.xmotion.x - x1);
1193 ny = ocy + (ev.xmotion.y - y1);
1194 Monitor *m = &monitors[monitorat()];
1195 if(abs(m->wax - nx) < SNAP)
1196 nx = m->wax;
1197 else if(abs((m->wax + m->waw) - (nx + c->w + 2 * c->border)) < SNAP)
1198 nx = m->wax + m->waw - c->w - 2 * c->border;
1199 if(abs(m->way - ny) < SNAP)
1200 ny = m->way;
1201 else if(abs((m->way + m->wah) - (ny + c->h + 2 * c->border)) < SNAP)
1202 ny = m->way + m->wah - c->h - 2 * c->border;
1203 if((monitors[selmonitor].layout->arrange != floating) && (abs(nx - c->x) > SNAP || abs(ny - c->y) > SNAP))
1204 togglefloating(NULL);
1205 if((monitors[selmonitor].layout->arrange == floating) || c->isfloating)
1206 resize(c, nx, ny, c->w, c->h, False);
1207 memcpy(c->tags, monitors[monitorat()].seltags, sizeof initags);
1208 break;
1209 }
1210 }
1211}
1212
1213Client *
1214nexttiled(Client *c, int monitor) {
1215 for(; c && (c->isfloating || !isvisible(c, monitor)); c = c->next);
1216 return c;
1217}
1218
1219void
1220propertynotify(XEvent *e) {
1221 Client *c;
1222 Window trans;
1223 XPropertyEvent *ev = &e->xproperty;
1224
1225 if(ev->state == PropertyDelete)
1226 return; /* ignore */
1227 if((c = getclient(ev->window))) {
1228 switch (ev->atom) {
1229 default: break;
1230 case XA_WM_TRANSIENT_FOR:
1231 XGetTransientForHint(dpy, c->win, &trans);
1232 if(!c->isfloating && (c->isfloating = (getclient(trans) != NULL)))
1233 arrange();
1234 break;
1235 case XA_WM_NORMAL_HINTS:
1236 updatesizehints(c);
1237 break;
1238 case XA_WM_HINTS:
1239 updatewmhints(c);
1240 drawbar();
1241 break;
1242 }
1243 if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
1244 updatetitle(c);
1245 if(c == sel)
1246 drawbar();
1247 }
1248 }
1249}
1250
1251void
1252quit(const char *arg) {
1253 readin = running = False;
1254}
1255
1256void
1257reapply(const char *arg) {
1258 static Bool zerotags[LENGTH(tags)] = { 0 };
1259 Client *c;
1260
1261 for(c = clients; c; c = c->next) {
1262 memcpy(c->tags, zerotags, sizeof zerotags);
1263 applyrules(c);
1264 }
1265 arrange();
1266}
1267
1268void
1269resize(Client *c, int x, int y, int w, int h, Bool sizehints) {
1270 XWindowChanges wc;
1271 //Monitor scr = monitors[monitorat()];
1272// c->monitor = monitorat();
1273
1274 if(sizehints) {
1275 /* set minimum possible */
1276 if (w < 1)
1277 w = 1;
1278 if (h < 1)
1279 h = 1;
1280
1281 /* temporarily remove base dimensions */
1282 w -= c->basew;
1283 h -= c->baseh;
1284
1285 /* adjust for aspect limits */
1286 if (c->minay > 0 && c->maxay > 0 && c->minax > 0 && c->maxax > 0) {
1287 if (w * c->maxay > h * c->maxax)
1288 w = h * c->maxax / c->maxay;
1289 else if (w * c->minay < h * c->minax)
1290 h = w * c->minay / c->minax;
1291 }
1292
1293 /* adjust for increment value */
1294 if(c->incw)
1295 w -= w % c->incw;
1296 if(c->inch)
1297 h -= h % c->inch;
1298
1299 /* restore base dimensions */
1300 w += c->basew;
1301 h += c->baseh;
1302
1303 if(c->minw > 0 && w < c->minw)
1304 w = c->minw;
1305 if(c->minh > 0 && h < c->minh)
1306 h = c->minh;
1307 if(c->maxw > 0 && w > c->maxw)
1308 w = c->maxw;
1309 if(c->maxh > 0 && h > c->maxh)
1310 h = c->maxh;
1311 }
1312 if(w <= 0 || h <= 0)
1313 return;
1314 /* TODO: offscreen appearance fixes */
1315 /*
1316 if(x > scr.sw)
1317 x = scr.sw - w - 2 * c->border;
1318 if(y > scr.sh)
1319 y = scr.sh - h - 2 * c->border;
1320 if(x + w + 2 * c->border < scr.sx)
1321 x = scr.sx;
1322 if(y + h + 2 * c->border < scr.sy)
1323 y = scr.sy;
1324 */
1325 if(c->x != x || c->y != y || c->w != w || c->h != h) {
1326 c->x = wc.x = x;
1327 c->y = wc.y = y;
1328 c->w = wc.width = w;
1329 c->h = wc.height = h;
1330 wc.border_width = c->border;
1331 XConfigureWindow(dpy, c->win, CWX | CWY | CWWidth | CWHeight | CWBorderWidth, &wc);
1332 configure(c);
1333 XSync(dpy, False);
1334 }
1335}
1336
1337void
1338resizemouse(Client *c) {
1339 int ocx, ocy;
1340 int nw, nh;
1341 XEvent ev;
1342
1343 ocx = c->x;
1344 ocy = c->y;
1345 if(XGrabPointer(dpy, monitors[selmonitor].root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
1346 None, cursor[CurResize], CurrentTime) != GrabSuccess)
1347 return;
1348 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->border - 1, c->h + c->border - 1);
1349 for(;;) {
1350 XMaskEvent(dpy, MOUSEMASK | ExposureMask | SubstructureRedirectMask , &ev);
1351 switch(ev.type) {
1352 case ButtonRelease:
1353 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0,
1354 c->w + c->border - 1, c->h + c->border - 1);
1355 XUngrabPointer(dpy, CurrentTime);
1356 while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
1357 return;
1358 case ConfigureRequest:
1359 case Expose:
1360 case MapRequest:
1361 handler[ev.type](&ev);
1362 break;
1363 case MotionNotify:
1364 XSync(dpy, False);
1365 if((nw = ev.xmotion.x - ocx - 2 * c->border + 1) <= 0)
1366 nw = 1;
1367 if((nh = ev.xmotion.y - ocy - 2 * c->border + 1) <= 0)
1368 nh = 1;
1369 if((monitors[selmonitor].layout->arrange != floating) && (abs(nw - c->w) > SNAP || abs(nh - c->h) > SNAP))
1370 togglefloating(NULL);
1371 if((monitors[selmonitor].layout->arrange == floating) || c->isfloating)
1372 resize(c, c->x, c->y, nw, nh, True);
1373 break;
1374 }
1375 }
1376}
1377
1378void
1379restack(void) {
1380 unsigned int i;
1381 Client *c;
1382 XEvent ev;
1383 XWindowChanges wc;
1384
1385 drawbar();
1386 if(!sel)
1387 return;
1388 if(sel->isfloating || (monitors[selmonitor].layout->arrange == floating))
1389 XRaiseWindow(dpy, sel->win);
1390 if(monitors[selmonitor].layout->arrange != floating) {
1391 wc.stack_mode = Below;
1392 wc.sibling = monitors[selmonitor].barwin;
1393 if(!sel->isfloating) {
1394 XConfigureWindow(dpy, sel->win, CWSibling | CWStackMode, &wc);
1395 wc.sibling = sel->win;
1396 }
1397 for(i = 0; i < mcount; i++) {
1398 for(c = nexttiled(clients, i); c; c = nexttiled(c->next, i)) {
1399 if(c == sel)
1400 continue;
1401 XConfigureWindow(dpy, c->win, CWSibling | CWStackMode, &wc);
1402 wc.sibling = c->win;
1403 }
1404 }
1405 }
1406 XSync(dpy, False);
1407 while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
1408}
1409
1410void
1411run(void) {
1412 char *p;
1413 char buf[sizeof stext];
1414 fd_set rd;
1415 int r, xfd;
1416 unsigned int len, offset;
1417 XEvent ev;
1418
1419 /* main event loop, also reads status text from stdin */
1420 XSync(dpy, False);
1421 xfd = ConnectionNumber(dpy);
1422 readin = True;
1423 offset = 0;
1424 len = sizeof stext - 1;
1425 buf[len] = stext[len] = '\0'; /* 0-terminator is never touched */
1426 while(running) {
1427 FD_ZERO(&rd);
1428 if(readin)
1429 FD_SET(STDIN_FILENO, &rd);
1430 FD_SET(xfd, &rd);
1431 if(select(xfd + 1, &rd, NULL, NULL, NULL) == -1) {
1432 if(errno == EINTR)
1433 continue;
1434 eprint("select failed\n");
1435 }
1436 if(FD_ISSET(STDIN_FILENO, &rd)) {
1437 switch((r = read(STDIN_FILENO, buf + offset, len - offset))) {
1438 case -1:
1439 strncpy(stext, strerror(errno), len);
1440 readin = False;
1441 break;
1442 case 0:
1443 strncpy(stext, "EOF", 4);
1444 readin = False;
1445 break;
1446 default:
1447 for(p = buf + offset; r > 0; p++, r--, offset++)
1448 if(*p == '\n' || *p == '\0') {
1449 *p = '\0';
1450 strncpy(stext, buf, len);
1451 p += r - 1; /* p is buf + offset + r - 1 */
1452 for(r = 0; *(p - r) && *(p - r) != '\n'; r++);
1453 offset = r;
1454 if(r)
1455 memmove(buf, p - r + 1, r);
1456 break;
1457 }
1458 break;
1459 }
1460 drawbar();
1461 }
1462 while(XPending(dpy)) {
1463 XNextEvent(dpy, &ev);
1464 if(handler[ev.type])
1465 (handler[ev.type])(&ev); /* call handler */
1466 }
1467 }
1468}
1469
1470void
1471scan(void) {
1472 unsigned int i, j, num;
1473 Window *wins, d1, d2;
1474 XWindowAttributes wa;
1475
1476 for(i = 0; i < mcount; i++) {
1477 Monitor *m = &monitors[i];
1478 wins = NULL;
1479 if(XQueryTree(dpy, m->root, &d1, &d2, &wins, &num)) {
1480 for(j = 0; j < num; j++) {
1481 if(!XGetWindowAttributes(dpy, wins[j], &wa)
1482 || wa.override_redirect || XGetTransientForHint(dpy, wins[j], &d1))
1483 continue;
1484 if(wa.map_state == IsViewable || getstate(wins[j]) == IconicState)
1485 manage(wins[j], &wa);
1486 }
1487 for(j = 0; j < num; j++) { /* now the transients */
1488 if(!XGetWindowAttributes(dpy, wins[j], &wa))
1489 continue;
1490 if(XGetTransientForHint(dpy, wins[j], &d1)
1491 && (wa.map_state == IsViewable || getstate(wins[j]) == IconicState))
1492 manage(wins[j], &wa);
1493 }
1494 }
1495 if(wins)
1496 XFree(wins);
1497 }
1498}
1499
1500void
1501setclientstate(Client *c, long state) {
1502 long data[] = {state, None};
1503
1504 XChangeProperty(dpy, c->win, wmatom[WMState], wmatom[WMState], 32,
1505 PropModeReplace, (unsigned char *)data, 2);
1506}
1507
1508void
1509setlayout(const char *arg) {
1510 unsigned int i;
1511 Monitor *m = &monitors[monitorat()];
1512
1513 if(!arg) {
1514 m->layout++;
1515 if(m->layout == &layouts[LENGTH(layouts)])
1516 m->layout = &layouts[0];
1517 }
1518 else {
1519 for(i = 0; i < LENGTH(layouts); i++)
1520 if(!strcmp(arg, layouts[i].symbol))
1521 break;
1522 if(i == LENGTH(layouts))
1523 return;
1524 m->layout = &layouts[i];
1525 }
1526 if(sel)
1527 arrange();
1528 else
1529 drawbar();
1530}
1531
1532void
1533setmwfact(const char *arg) {
1534 double delta;
1535
1536 Monitor *m = &monitors[monitorat()];
1537
1538 if(!domwfact)
1539 return;
1540 /* arg handling, manipulate mwfact */
1541 if(arg == NULL)
1542 m->mwfact = MWFACT;
1543 else if(sscanf(arg, "%lf", &delta) == 1) {
1544 if(arg[0] == '+' || arg[0] == '-')
1545 m->mwfact += delta;
1546 else
1547 m->mwfact = delta;
1548 if(m->mwfact < 0.1)
1549 m->mwfact = 0.1;
1550 else if(m->mwfact > 0.9)
1551 m->mwfact = 0.9;
1552 }
1553 arrange();
1554}
1555
1556void
1557setup(void) {
1558 unsigned int i, j, k;
1559 Monitor *m;
1560 XSetWindowAttributes wa;
1561 XineramaScreenInfo *info = NULL;
1562
1563 /* init atoms */
1564 wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
1565 wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
1566 wmatom[WMName] = XInternAtom(dpy, "WM_NAME", False);
1567 wmatom[WMState] = XInternAtom(dpy, "WM_STATE", False);
1568 netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
1569 netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
1570
1571 /* init cursors */
1572 wa.cursor = cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
1573 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
1574 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
1575
1576 // init screens/monitors first
1577 mcount = 1;
1578 if((isxinerama = XineramaIsActive(dpy)))
1579 info = XineramaQueryScreens(dpy, &mcount);
1580 monitors = emallocz(mcount * sizeof(Monitor));
1581
1582 for(i = 0; i < mcount; i++) {
1583 /* init geometry */
1584 m = &monitors[i];
1585
1586 m->screen = isxinerama ? 0 : i;
1587 m->root = RootWindow(dpy, m->screen);
1588
1589 if (mcount != 1 && isxinerama) {
1590 m->sx = info[i].x_org;
1591 m->sy = info[i].y_org;
1592 m->sw = info[i].width;
1593 m->sh = info[i].height;
1594 fprintf(stderr, "monitor[%d]: %d,%d,%d,%d\n", i, m->sx, m->sy, m->sw, m->sh);
1595 }
1596 else {
1597 m->sx = 0;
1598 m->sy = 0;
1599 m->sw = DisplayWidth(dpy, m->screen);
1600 m->sh = DisplayHeight(dpy, m->screen);
1601 }
1602
1603 m->seltags = emallocz(sizeof initags);
1604 m->prevtags = emallocz(sizeof initags);
1605
1606 memcpy(m->seltags, initags, sizeof initags);
1607 memcpy(m->prevtags, initags, sizeof initags);
1608
1609 /* init appearance */
1610 m->dc.norm[ColBorder] = getcolor(NORMBORDERCOLOR, m->screen);
1611 m->dc.norm[ColBG] = getcolor(NORMBGCOLOR, m->screen);
1612 m->dc.norm[ColFG] = getcolor(NORMFGCOLOR, m->screen);
1613 m->dc.sel[ColBorder] = getcolor(SELBORDERCOLOR, m->screen);
1614 m->dc.sel[ColBG] = getcolor(SELBGCOLOR, m->screen);
1615 m->dc.sel[ColFG] = getcolor(SELFGCOLOR, m->screen);
1616 initfont(m, FONT);
1617 m->dc.h = bh = m->dc.font.height + 2;
1618
1619 /* init layouts */
1620 m->mwfact = MWFACT;
1621 m->layout = &layouts[0];
1622 for(blw = k = 0; k < LENGTH(layouts); k++) {
1623 j = textw(m, layouts[k].symbol);
1624 if(j > blw)
1625 blw = j;
1626 }
1627
1628 // TODO: bpos per screen?
1629 bpos = BARPOS;
1630 wa.override_redirect = 1;
1631 wa.background_pixmap = ParentRelative;
1632 wa.event_mask = ButtonPressMask | ExposureMask;
1633
1634 /* init bars */
1635 m->barwin = XCreateWindow(dpy, m->root, m->sx, m->sy, m->sw, bh, 0,
1636 DefaultDepth(dpy, m->screen), CopyFromParent, DefaultVisual(dpy, m->screen),
1637 CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
1638 XDefineCursor(dpy, m->barwin, cursor[CurNormal]);
1639 updatebarpos(m);
1640 XMapRaised(dpy, m->barwin);
1641 strcpy(stext, "dwm-"VERSION);
1642 m->dc.drawable = XCreatePixmap(dpy, m->root, m->sw, bh, DefaultDepth(dpy, m->screen));
1643 m->dc.gc = XCreateGC(dpy, m->root, 0, 0);
1644 XSetLineAttributes(dpy, m->dc.gc, 1, LineSolid, CapButt, JoinMiter);
1645 if(!m->dc.font.set)
1646 XSetFont(dpy, m->dc.gc, m->dc.font.xfont->fid);
1647
1648 /* EWMH support per monitor */
1649 XChangeProperty(dpy, m->root, netatom[NetSupported], XA_ATOM, 32,
1650 PropModeReplace, (unsigned char *) netatom, NetLast);
1651
1652 /* select for events */
1653 wa.event_mask = SubstructureRedirectMask | SubstructureNotifyMask
1654 | EnterWindowMask | LeaveWindowMask | StructureNotifyMask;
1655 XChangeWindowAttributes(dpy, m->root, CWEventMask | CWCursor, &wa);
1656 XSelectInput(dpy, m->root, wa.event_mask);
1657 }
1658 if(info)
1659 XFree(info);
1660
1661 /* grab keys */
1662 grabkeys();
1663
1664 /* init tags */
1665 compileregs();
1666
1667 selmonitor = monitorat();
1668 fprintf(stderr, "selmonitor == %d\n", selmonitor);
1669}
1670
1671void
1672spawn(const char *arg) {
1673 static char *shell = NULL;
1674
1675 if(!shell && !(shell = getenv("SHELL")))
1676 shell = "/bin/sh";
1677 if(!arg)
1678 return;
1679 /* The double-fork construct avoids zombie processes and keeps the code
1680 * clean from stupid signal handlers. */
1681 if(fork() == 0) {
1682 if(fork() == 0) {
1683 if(dpy)
1684 close(ConnectionNumber(dpy));
1685 setsid();
1686 execl(shell, shell, "-c", arg, (char *)NULL);
1687 fprintf(stderr, "dwm: execl '%s -c %s'", shell, arg);
1688 perror(" failed");
1689 }
1690 exit(0);
1691 }
1692 wait(0);
1693}
1694
1695void
1696tag(const char *arg) {
1697 unsigned int i;
1698
1699 if(!sel)
1700 return;
1701 for(i = 0; i < LENGTH(tags); i++)
1702 sel->tags[i] = (NULL == arg);
1703 sel->tags[idxoftag(arg)] = True;
1704 arrange();
1705}
1706
1707unsigned int
1708textnw(Monitor *m, const char *text, unsigned int len) {
1709 XRectangle r;
1710
1711 if(m->dc.font.set) {
1712 XmbTextExtents(m->dc.font.set, text, len, NULL, &r);
1713 return r.width;
1714 }
1715 return XTextWidth(m->dc.font.xfont, text, len);
1716}
1717
1718unsigned int
1719textw(Monitor *m, const char *text) {
1720 return textnw(m, text, strlen(text)) + m->dc.font.height;
1721}
1722
1723void
1724tile(void) {
1725 unsigned int i, j, n, nx, ny, nw, nh, mw, th;
1726 Client *c, *mc;
1727
1728 domwfact = dozoom = True;
1729
1730 nx = ny = nw = 0; /* gcc stupidity requires this */
1731
1732 for (i = 0; i < mcount; i++) {
1733 Monitor *m = &monitors[i];
1734
1735 for(n = 0, c = nexttiled(clients, i); c; c = nexttiled(c->next, i))
1736 n++;
1737
1738 /* window geoms */
1739 mw = (n == 1) ? m->waw : m->mwfact * m->waw;
1740 th = (n > 1) ? m->wah / (n - 1) : 0;
1741 if(n > 1 && th < bh)
1742 th = m->wah;
1743
1744 for(j = 0, c = mc = nexttiled(clients, i); c; c = nexttiled(c->next, i)) {
1745 if(j == 0) { /* master */
1746 nx = m->wax;
1747 ny = m->way;
1748 nw = mw - 2 * c->border;
1749 nh = m->wah - 2 * c->border;
1750 }
1751 else { /* tile window */
1752 if(j == 1) {
1753 ny = m->way;
1754 nx += mc->w + 2 * mc->border;
1755 nw = m->waw - mw - 2 * c->border;
1756 }
1757 if(j + 1 == n) /* remainder */
1758 nh = (m->way + m->wah) - ny - 2 * c->border;
1759 else
1760 nh = th - 2 * c->border;
1761 }
1762 fprintf(stderr, "tile(%d, %d, %d, %d)\n", nx, ny, nw, nh);
1763 resize(c, nx, ny, nw, nh, RESIZEHINTS);
1764 if((RESIZEHINTS) && ((c->h < bh) || (c->h > nh) || (c->w < bh) || (c->w > nw)))
1765 /* client doesn't accept size constraints */
1766 resize(c, nx, ny, nw, nh, False);
1767 if(n > 1 && th != m->wah)
1768 ny = c->y + c->h + 2 * c->border;
1769
1770 j++;
1771 }
1772 }
1773 fprintf(stderr, "done\n");
1774}
1775void
1776togglebar(const char *arg) {
1777 if(bpos == BarOff)
1778 bpos = (BARPOS == BarOff) ? BarTop : BARPOS;
1779 else
1780 bpos = BarOff;
1781 updatebarpos(&monitors[monitorat()]);
1782 arrange();
1783}
1784
1785void
1786togglefloating(const char *arg) {
1787 if(!sel)
1788 return;
1789 sel->isfloating = !sel->isfloating;
1790 if(sel->isfloating)
1791 resize(sel, sel->x, sel->y, sel->w, sel->h, True);
1792 arrange();
1793}
1794
1795void
1796toggletag(const char *arg) {
1797 unsigned int i, j;
1798
1799 if(!sel)
1800 return;
1801 i = idxoftag(arg);
1802 sel->tags[i] = !sel->tags[i];
1803 for(j = 0; j < LENGTH(tags) && !sel->tags[j]; j++);
1804 if(j == LENGTH(tags))
1805 sel->tags[i] = True; /* at least one tag must be enabled */
1806 arrange();
1807}
1808
1809void
1810toggleview(const char *arg) {
1811 unsigned int i, j;
1812
1813 Monitor *m = &monitors[monitorat()];
1814
1815 i = idxoftag(arg);
1816 m->seltags[i] = !m->seltags[i];
1817 for(j = 0; j < LENGTH(tags) && !m->seltags[j]; j++);
1818 if(j == LENGTH(tags))
1819 m->seltags[i] = True; /* at least one tag must be viewed */
1820 arrange();
1821}
1822
1823void
1824unban(Client *c) {
1825 if(!c->isbanned)
1826 return;
1827 XMoveWindow(dpy, c->win, c->x, c->y);
1828 c->isbanned = False;
1829}
1830
1831void
1832unmanage(Client *c) {
1833 XWindowChanges wc;
1834
1835 wc.border_width = c->oldborder;
1836 /* The server grab construct avoids race conditions. */
1837 XGrabServer(dpy);
1838 XSetErrorHandler(xerrordummy);
1839 XConfigureWindow(dpy, c->win, CWBorderWidth, &wc); /* restore border */
1840 detach(c);
1841 detachstack(c);
1842 if(sel == c)
1843 focus(NULL);
1844 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
1845 setclientstate(c, WithdrawnState);
1846 free(c->tags);
1847 free(c);
1848 XSync(dpy, False);
1849 XSetErrorHandler(xerror);
1850 XUngrabServer(dpy);
1851 arrange();
1852}
1853
1854void
1855unmapnotify(XEvent *e) {
1856 Client *c;
1857 XUnmapEvent *ev = &e->xunmap;
1858
1859 if((c = getclient(ev->window)))
1860 unmanage(c);
1861}
1862
1863void
1864updatebarpos(Monitor *m) {
1865 XEvent ev;
1866
1867 m->wax = m->sx;
1868 m->way = m->sy;
1869 m->wah = m->sh;
1870 m->waw = m->sw;
1871 switch(bpos) {
1872 default:
1873 m->wah -= bh;
1874 m->way += bh;
1875 XMoveWindow(dpy, m->barwin, m->sx, m->sy);
1876 break;
1877 case BarBot:
1878 m->wah -= bh;
1879 XMoveWindow(dpy, m->barwin, m->sx, m->sy + m->wah);
1880 break;
1881 case BarOff:
1882 XMoveWindow(dpy, m->barwin, m->sx, m->sy - bh);
1883 break;
1884 }
1885 XSync(dpy, False);
1886 while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
1887}
1888
1889void
1890updatesizehints(Client *c) {
1891 long msize;
1892 XSizeHints size;
1893
1894 if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
1895 size.flags = PSize;
1896 c->flags = size.flags;
1897 if(c->flags & PBaseSize) {
1898 c->basew = size.base_width;
1899 c->baseh = size.base_height;
1900 }
1901 else if(c->flags & PMinSize) {
1902 c->basew = size.min_width;
1903 c->baseh = size.min_height;
1904 }
1905 else
1906 c->basew = c->baseh = 0;
1907 if(c->flags & PResizeInc) {
1908 c->incw = size.width_inc;
1909 c->inch = size.height_inc;
1910 }
1911 else
1912 c->incw = c->inch = 0;
1913 if(c->flags & PMaxSize) {
1914 c->maxw = size.max_width;
1915 c->maxh = size.max_height;
1916 }
1917 else
1918 c->maxw = c->maxh = 0;
1919 if(c->flags & PMinSize) {
1920 c->minw = size.min_width;
1921 c->minh = size.min_height;
1922 }
1923 else if(c->flags & PBaseSize) {
1924 c->minw = size.base_width;
1925 c->minh = size.base_height;
1926 }
1927 else
1928 c->minw = c->minh = 0;
1929 if(c->flags & PAspect) {
1930 c->minax = size.min_aspect.x;
1931 c->maxax = size.max_aspect.x;
1932 c->minay = size.min_aspect.y;
1933 c->maxay = size.max_aspect.y;
1934 }
1935 else
1936 c->minax = c->maxax = c->minay = c->maxay = 0;
1937 c->isfixed = (c->maxw && c->minw && c->maxh && c->minh
1938 && c->maxw == c->minw && c->maxh == c->minh);
1939}
1940
1941void
1942updatetitle(Client *c) {
1943 if(!gettextprop(c->win, netatom[NetWMName], c->name, sizeof c->name))
1944 gettextprop(c->win, wmatom[WMName], c->name, sizeof c->name);
1945}
1946
1947void
1948updatewmhints(Client *c) {
1949 XWMHints *wmh;
1950
1951 if((wmh = XGetWMHints(dpy, c->win))) {
1952 c->isurgent = (wmh->flags & XUrgencyHint) ? True : False;
1953 XFree(wmh);
1954 }
1955}
1956
1957/* There's no way to check accesses to destroyed windows, thus those cases are
1958 * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
1959 * default error handler, which may call exit. */
1960int
1961xerror(Display *dpy, XErrorEvent *ee) {
1962 if(ee->error_code == BadWindow
1963 || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
1964 || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
1965 || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
1966 || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
1967 || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
1968 || (ee->request_code == X_GrabKey && ee->error_code == BadAccess)
1969 || (ee->request_code == X_CopyArea && ee->error_code == BadDrawable))
1970 return 0;
1971 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
1972 ee->request_code, ee->error_code);
1973 return xerrorxlib(dpy, ee); /* may call exit */
1974}
1975
1976int
1977xerrordummy(Display *dsply, XErrorEvent *ee) {
1978 return 0;
1979}
1980
1981/* Startup Error handler to check if another window manager
1982 * is already running. */
1983int
1984xerrorstart(Display *dsply, XErrorEvent *ee) {
1985 otherwm = True;
1986 return -1;
1987}
1988
1989void
1990view(const char *arg) {
1991 unsigned int i;
1992 Bool tmp[LENGTH(tags)];
1993 Monitor *m = &monitors[monitorat()];
1994
1995 for(i = 0; i < LENGTH(tags); i++)
1996 tmp[i] = (NULL == arg);
1997 tmp[idxoftag(arg)] = True;
1998 if(memcmp(m->seltags, tmp, sizeof initags) != 0) {
1999 memcpy(m->prevtags, m->seltags, sizeof initags);
2000 memcpy(m->seltags, tmp, sizeof initags);
2001 arrange();
2002 }
2003}
2004
2005void
2006viewprevtag(const char *arg) {
2007 static Bool tmp[LENGTH(tags)];
2008
2009 Monitor *m = &monitors[monitorat()];
2010
2011 memcpy(tmp, m->seltags, sizeof initags);
2012 memcpy(m->seltags, m->prevtags, sizeof initags);
2013 memcpy(m->prevtags, tmp, sizeof initags);
2014 arrange();
2015}
2016
2017void
2018zoom(const char *arg) {
2019 Client *c;
2020
2021 if(!sel || !dozoom || sel->isfloating)
2022 return;
2023 if((c = sel) == nexttiled(clients, c->monitor))
2024 if(!(c = nexttiled(c->next, c->monitor)))
2025 return;
2026 detach(c);
2027 attach(c);
2028 focus(c);
2029 arrange();
2030}
2031
2032void
2033movetomonitor(const char *arg) {
2034 if (sel) {
2035 sel->monitor = arg ? atoi(arg) : (sel->monitor+1) % mcount;
2036
2037 memcpy(sel->tags, monitors[sel->monitor].seltags, sizeof initags);
2038 resize(sel, monitors[sel->monitor].wax, monitors[sel->monitor].way, sel->w, sel->h, True);
2039 arrange();
2040 }
2041}
2042
2043void
2044selectmonitor(const char *arg) {
2045 Monitor *m = &monitors[arg ? atoi(arg) : (monitorat()+1) % mcount];
2046
2047 XWarpPointer(dpy, None, m->root, 0, 0, 0, 0, m->wax+m->waw/2, m->way+m->wah/2);
2048 focus(NULL);
2049}
2050
2051
2052int
2053main(int argc, char *argv[]) {
2054 if(argc == 2 && !strcmp("-v", argv[1]))
2055 eprint("dwm-"VERSION", © 2006-2007 Anselm R. Garbe, Sander van Dijk, "
2056 "Jukka Salmi, Premysl Hruby, Szabolcs Nagy, Christof Musik\n");
2057 else if(argc != 1)
2058 eprint("usage: dwm [-v]\n");
2059
2060 setlocale(LC_CTYPE, "");
2061 if(!(dpy = XOpenDisplay(0)))
2062 eprint("dwm: cannot open display\n");
2063
2064 checkotherwm();
2065 setup();
2066 drawbar();
2067 scan();
2068 run();
2069 cleanup();
2070
2071 XCloseDisplay(dpy);
2072 return 0;
2073}