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