tdwm.c - dwm - [fork] customized build of dwm, the dynamic window manager
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tdwm.c (56591B)
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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 * The event handlers of dwm are organized in an array which is accessed
10 * whenever a new event has been fetched. This allows event dispatching
11 * in O(1) time.
12 *
13 * Each child of the root window is called a client, except windows which have
14 * set the override_redirect flag. Clients are organized in a linked client
15 * list on each monitor, the focus history is remembered through a stack list
16 * on each monitor. Each client contains a bit array to indicate the tags of a
17 * client.
18 *
19 * Keys and tagging rules are organized as arrays and defined in config.h.
20 *
21 * To understand everything else, start reading main().
22 */
23 #include <errno.h>
24 #include <locale.h>
25 #include <signal.h>
26 #include <stdarg.h>
27 #include <stdio.h>
28 #include <stdlib.h>
29 #include <string.h>
30 #include <unistd.h>
31 #include <sys/types.h>
32 #include <sys/wait.h>
33 #include <X11/cursorfont.h>
34 #include <X11/keysym.h>
35 #include <X11/Xatom.h>
36 #include <X11/Xlib.h>
37 #include <X11/Xproto.h>
38 #include <X11/Xutil.h>
39 #ifdef XINERAMA
40 #include <X11/extensions/Xinerama.h>
41 #endif /* XINERAMA */
42 #include <X11/Xft/Xft.h>
43
44 /* for multimedia keys */
45 #include <X11/XF86keysym.h>
46
47 #include "drw.h"
48 #include "util.h"
49
50 /* macros */
51 #define BUTTONMASK (ButtonPressMask|ButtonReleaseMask)
52 #define CLEANMASK(mask) (mask & ~(numlockmask|LockMask) & (ShiftMask|ControlMask|Mod1Mask|Mod2Mask|Mod3Mask|Mod4Mask|Mod5Mask))
53 #define INTERSECT(x,y,w,h,m) (MAX(0, MIN((x)+(w),(m)->wx+(m)->ww) - MAX((x),(m)->wx)) \
54 * MAX(0, MIN((y)+(h),(m)->wy+(m)->wh) - MAX((y),(m)->wy)))
55 #define ISVISIBLE(C) ((C->tags & C->mon->tagset[C->mon->seltags]))
56 #define LENGTH(X) (sizeof X / sizeof X[0])
57 #define MOUSEMASK (BUTTONMASK|PointerMotionMask)
58 #define WIDTH(X) ((X)->w + 2 * (X)->bw)
59 #define HEIGHT(X) ((X)->h + 2 * (X)->bw)
60 #define TAGMASK ((1 << LENGTH(tags)) - 1)
61 #define TEXTW(X) (drw_fontset_getwidth(drw, (X)) + lrpad)
62
63 /* enums */
64 enum { CurNormal, CurResize, CurMove, CurLast }; /* cursor */
65 enum { SchemeNorm, SchemeSel }; /* color schemes */
66 enum { NetSupported, NetWMName, NetWMState, NetWMCheck,
67 NetWMFullscreen, NetActiveWindow, NetWMWindowType,
68 NetWMWindowTypeDialog, NetClientList, NetLast }; /* EWMH atoms */
69 enum { WMProtocols, WMDelete, WMState, WMTakeFocus, WMLast }; /* default atoms */
70 enum { ClkTagBar, ClkLtSymbol, ClkStatusText, ClkWinTitle,
71 ClkClientWin, ClkRootWin, ClkLast }; /* clicks */
72
73 typedef union {
74 int i;
75 unsigned int ui;
76 float f;
77 const void *v;
78 } Arg;
79
80 typedef struct {
81 unsigned int click;
82 unsigned int mask;
83 unsigned int button;
84 void (*func)(const Arg *arg);
85 const Arg arg;
86 } Button;
87
88 typedef struct Monitor Monitor;
89 typedef struct Client Client;
90 struct Client {
91 char name[256];
92 float mina, maxa;
93 int x, y, w, h;
94 int oldx, oldy, oldw, oldh;
95 int basew, baseh, incw, inch, maxw, maxh, minw, minh;
96 int bw, oldbw;
97 unsigned int tags;
98 int isfixed, floatpos, isfloating, isurgent, neverfocus, oldstate, isfullscreen;
99 Client *next;
100 Client *snext;
101 Monitor *mon;
102 Window win;
103 };
104
105 typedef struct {
106 unsigned int mod;
107 KeySym keysym;
108 void (*func)(const Arg *);
109 const Arg arg;
110 } Key;
111
112 typedef struct {
113 const char *symbol;
114 void (*arrange)(Monitor *);
115 } Layout;
116
117 typedef struct Pertag Pertag;
118 struct Monitor {
119 char ltsymbol[16];
120 float mfact;
121 int nmaster;
122 int num;
123 int by; /* bar geometry */
124 int mx, my, mw, mh; /* screen size */
125 int wx, wy, ww, wh; /* window area */
126 unsigned int seltags;
127 unsigned int sellt;
128 unsigned int tagset[2];
129 int showbar;
130 int topbar;
131 Client *clients;
132 Client *sel;
133 Client *stack;
134 Monitor *next;
135 Window barwin;
136 const Layout *lt[2];
137 Pertag *pertag;
138 };
139
140 typedef struct {
141 const char *class;
142 const char *instance;
143 const char *title;
144 unsigned int tags;
145 int floatpos;
146 int isfloating;
147 int monitor;
148 } Rule;
149
150 /* function declarations */
151 static void applyrules(Client *c);
152 static int applysizehints(Client *c, int *x, int *y, int *w, int *h, int interact);
153 static void arrange(Monitor *m);
154 static void arrangemon(Monitor *m);
155 static void attach(Client *c);
156 static void attachstack(Client *c);
157 static void buttonpress(XEvent *e);
158 static void checkotherwm(void);
159 static void cleanup(void);
160 static void cleanupmon(Monitor *mon);
161 static void clientmessage(XEvent *e);
162 static void configure(Client *c);
163 static void configurenotify(XEvent *e);
164 static void configurerequest(XEvent *e);
165 static Monitor *createmon(void);
166 static void destroynotify(XEvent *e);
167 static void detach(Client *c);
168 static void detachstack(Client *c);
169 static Monitor *dirtomon(int dir);
170 static void drawbar(Monitor *m);
171 static void drawbars(void);
172 static void enternotify(XEvent *e);
173 static void expose(XEvent *e);
174 static void focus(Client *c);
175 static void focusin(XEvent *e);
176 static void focusmon(const Arg *arg);
177 static void focusstack(const Arg *arg);
178 static int getrootptr(int *x, int *y);
179 static long getstate(Window w);
180 static int gettextprop(Window w, Atom atom, char *text, unsigned int size);
181 static void grabbuttons(Client *c, int focused);
182 static void grabkeys(void);
183 static void incnmaster(const Arg *arg);
184 static void keypress(XEvent *e);
185 static void killclient(const Arg *arg);
186 static void manage(Window w, XWindowAttributes *wa);
187 static void mappingnotify(XEvent *e);
188 static void maprequest(XEvent *e);
189 static void monocle(Monitor *m);
190 static void motionnotify(XEvent *e);
191 static void movemouse(const Arg *arg);
192 static Client *nexttiled(Client *c);
193 static void pop(Client *);
194 static void propertynotify(XEvent *e);
195 static void quit(const Arg *arg);
196 static Monitor *recttomon(int x, int y, int w, int h);
197 static void resize(Client *c, int x, int y, int w, int h, int interact);
198 static void resizeclient(Client *c, int x, int y, int w, int h);
199 static void resizemouse(const Arg *arg);
200 static void restack(Monitor *m);
201 static void run(void);
202 static void scan(void);
203 static int sendevent(Client *c, Atom proto);
204 static void sendmon(Client *c, Monitor *m);
205 static void setclientstate(Client *c, long state);
206 static void setfocus(Client *c);
207 static void setfullscreen(Client *c, int fullscreen);
208 static void setlayout(const Arg *arg);
209 static void setmfact(const Arg *arg);
210 static void setup(void);
211 static void seturgent(Client *c, int urg);
212 static void showhide(Client *c);
213 static void sigchld(int unused);
214 static void spawn(const Arg *arg);
215 static void tag(const Arg *arg);
216 static void tagmon(const Arg *arg);
217 static void tile(Monitor *);
218 static void togglebar(const Arg *arg);
219 static void togglefloating(const Arg *arg);
220 static void toggletag(const Arg *arg);
221 static void toggleview(const Arg *arg);
222 static void unfocus(Client *c, int setfocus);
223 static void unmanage(Client *c, int destroyed);
224 static void unmapnotify(XEvent *e);
225 static void updatebarpos(Monitor *m);
226 static void updatebars(void);
227 static void updateclientlist(void);
228 static int updategeom(void);
229 static void updatenumlockmask(void);
230 static void updatesizehints(Client *c);
231 static void updatestatus(void);
232 static void updatetitle(Client *c);
233 static void updatewindowtype(Client *c);
234 static void updatewmhints(Client *c);
235 static void view(const Arg *arg);
236 static Client *wintoclient(Window w);
237 static Monitor *wintomon(Window w);
238 static int xerror(Display *dpy, XErrorEvent *ee);
239 static int xerrordummy(Display *dpy, XErrorEvent *ee);
240 static int xerrorstart(Display *dpy, XErrorEvent *ee);
241 static void zoom(const Arg *arg);
242
243 /* variables */
244 static const char broken[] = "broken";
245 static char stext[256];
246 static int screen;
247 static int sw, sh; /* X display screen geometry width, height */
248 static int bh, blw = 0; /* bar geometry */
249 static int lrpad; /* sum of left and right padding for text */
250 static int (*xerrorxlib)(Display *, XErrorEvent *);
251 static unsigned int numlockmask = 0;
252 static void (*handler[LASTEvent]) (XEvent *) = {
253 [ButtonPress] = buttonpress,
254 [ClientMessage] = clientmessage,
255 [ConfigureRequest] = configurerequest,
256 [ConfigureNotify] = configurenotify,
257 [DestroyNotify] = destroynotify,
258 [EnterNotify] = enternotify,
259 [Expose] = expose,
260 [FocusIn] = focusin,
261 [KeyPress] = keypress,
262 [MappingNotify] = mappingnotify,
263 [MapRequest] = maprequest,
264 [MotionNotify] = motionnotify,
265 [PropertyNotify] = propertynotify,
266 [UnmapNotify] = unmapnotify
267 };
268 static Atom wmatom[WMLast], netatom[NetLast];
269 static int running = 1;
270 static Cur *cursor[CurLast];
271 static Clr **scheme;
272 static Display *dpy;
273 static Drw *drw;
274 static Monitor *mons, *selmon;
275 static Window root, wmcheckwin;
276
277 /* configuration, allows nested code to access above variables */
278 #include "config.h"
279
280 struct Pertag {
281 unsigned int curtag, prevtag; /* current and previous tag */
282 int nmasters[LENGTH(tags) + 1]; /* number of windows in master area */
283 float mfacts[LENGTH(tags) + 1]; /* mfacts per tag */
284 unsigned int sellts[LENGTH(tags) + 1]; /* selected layouts */
285 const Layout *ltidxs[LENGTH(tags) + 1][2]; /* matrix of tags and layouts indexes */
286 int showbars[LENGTH(tags) + 1]; /* display bar for the current tag */
287 };
288
289 /* compile-time check if all tags fit into an unsigned int bit array. */
290 struct NumTags { char limitexceeded[LENGTH(tags) > 31 ? -1 : 1]; };
291
292 /* function implementations */
293 void
294 applyrules(Client *c)
295 {
296 const char *class, *instance;
297 unsigned int i;
298 const Rule *r;
299 Monitor *m;
300 XClassHint ch = { NULL, NULL };
301
302 /* rule matching */
303 c->floatpos = 0;
304 c->isfloating = 0;
305 c->tags = 0;
306 XGetClassHint(dpy, c->win, &ch);
307 class = ch.res_class ? ch.res_class : broken;
308 instance = ch.res_name ? ch.res_name : broken;
309
310 for (i = 0; i < LENGTH(rules); i++) {
311 r = &rules[i];
312 if ((!r->title || strstr(c->name, r->title))
313 && (!r->class || strstr(class, r->class))
314 && (!r->instance || strstr(instance, r->instance)))
315 {
316 c->isfloating = r->isfloating;
317 c->floatpos = r->floatpos;
318 c->tags |= r->tags;
319 for (m = mons; m && m->num != r->monitor; m = m->next);
320 if (m)
321 c->mon = m;
322 }
323 }
324 if (ch.res_class)
325 XFree(ch.res_class);
326 if (ch.res_name)
327 XFree(ch.res_name);
328 c->tags = c->tags & TAGMASK ? c->tags & TAGMASK : c->mon->tagset[c->mon->seltags];
329 }
330
331 int
332 applysizehints(Client *c, int *x, int *y, int *w, int *h, int interact)
333 {
334 int baseismin;
335 Monitor *m = c->mon;
336
337 /* set minimum possible */
338 *w = MAX(1, *w);
339 *h = MAX(1, *h);
340 if (interact) {
341 if (*x > sw)
342 *x = sw - WIDTH(c);
343 if (*y > sh)
344 *y = sh - HEIGHT(c);
345 if (*x + *w + 2 * c->bw < 0)
346 *x = 0;
347 if (*y + *h + 2 * c->bw < 0)
348 *y = 0;
349 } else {
350 if (*x >= m->wx + m->ww)
351 *x = m->wx + m->ww - WIDTH(c);
352 if (*y >= m->wy + m->wh)
353 *y = m->wy + m->wh - HEIGHT(c);
354 if (*x + *w + 2 * c->bw <= m->wx)
355 *x = m->wx;
356 if (*y + *h + 2 * c->bw <= m->wy)
357 *y = m->wy;
358 }
359 if (*h < bh)
360 *h = bh;
361 if (*w < bh)
362 *w = bh;
363 if (resizehints || c->isfloating || !c->mon->lt[c->mon->sellt]->arrange) {
364 /* see last two sentences in ICCCM 4.1.2.3 */
365 baseismin = c->basew == c->minw && c->baseh == c->minh;
366 if (!baseismin) { /* temporarily remove base dimensions */
367 *w -= c->basew;
368 *h -= c->baseh;
369 }
370 /* adjust for aspect limits */
371 if (c->mina > 0 && c->maxa > 0) {
372 if (c->maxa < (float)*w / *h)
373 *w = *h * c->maxa + 0.5;
374 else if (c->mina < (float)*h / *w)
375 *h = *w * c->mina + 0.5;
376 }
377 if (baseismin) { /* increment calculation requires this */
378 *w -= c->basew;
379 *h -= c->baseh;
380 }
381 /* adjust for increment value */
382 if (c->incw)
383 *w -= *w % c->incw;
384 if (c->inch)
385 *h -= *h % c->inch;
386 /* restore base dimensions */
387 *w = MAX(*w + c->basew, c->minw);
388 *h = MAX(*h + c->baseh, c->minh);
389 if (c->maxw)
390 *w = MIN(*w, c->maxw);
391 if (c->maxh)
392 *h = MIN(*h, c->maxh);
393 }
394 return *x != c->x || *y != c->y || *w != c->w || *h != c->h;
395 }
396
397 void
398 arrange(Monitor *m)
399 {
400 if (m)
401 showhide(m->stack);
402 else for (m = mons; m; m = m->next)
403 showhide(m->stack);
404 if (m) {
405 arrangemon(m);
406 restack(m);
407 } else for (m = mons; m; m = m->next)
408 arrangemon(m);
409 }
410
411 void
412 arrangemon(Monitor *m)
413 {
414 strncpy(m->ltsymbol, m->lt[m->sellt]->symbol, sizeof m->ltsymbol);
415 if (m->lt[m->sellt]->arrange)
416 m->lt[m->sellt]->arrange(m);
417 }
418
419 void
420 attach(Client *c)
421 {
422 c->next = c->mon->clients;
423 c->mon->clients = c;
424 }
425
426 void
427 attachstack(Client *c)
428 {
429 c->snext = c->mon->stack;
430 c->mon->stack = c;
431 }
432
433 void
434 buttonpress(XEvent *e)
435 {
436 unsigned int i, x, click, occ = 0;
437 Arg arg = {0};
438 Client *c;
439 Monitor *m;
440 XButtonPressedEvent *ev = &e->xbutton;
441
442 click = ClkRootWin;
443 /* focus monitor if necessary */
444 if ((m = wintomon(ev->window)) && m != selmon) {
445 unfocus(selmon->sel, 1);
446 selmon = m;
447 focus(NULL);
448 }
449 if (ev->window == selmon->barwin) {
450 i = x = 0;
451 for (c = m->clients; c; c = c->next)
452 occ |= c->tags == 255 ? 0 : c->tags;
453 do {
454 /* do not reserve space for vacant tags */
455 if (!(occ & 1 << i || m->tagset[m->seltags] & 1 << i))
456 continue;
457 x += TEXTW(tags[i]);
458 } while (ev->x >= x && ++i < LENGTH(tags));
459 if (i < LENGTH(tags)) {
460 click = ClkTagBar;
461 arg.ui = 1 << i;
462 } else if (ev->x < x + blw)
463 click = ClkLtSymbol;
464 else if (ev->x > selmon->ww - TEXTW(stext))
465 click = ClkStatusText;
466 else
467 click = ClkWinTitle;
468 } else if ((c = wintoclient(ev->window))) {
469 focus(c);
470 restack(selmon);
471 XAllowEvents(dpy, ReplayPointer, CurrentTime);
472 click = ClkClientWin;
473 }
474 for (i = 0; i < LENGTH(buttons); i++)
475 if (click == buttons[i].click && buttons[i].func && buttons[i].button == ev->button
476 && CLEANMASK(buttons[i].mask) == CLEANMASK(ev->state))
477 buttons[i].func(click == ClkTagBar && buttons[i].arg.i == 0 ? &arg : &buttons[i].arg);
478 }
479
480 void
481 checkotherwm(void)
482 {
483 xerrorxlib = XSetErrorHandler(xerrorstart);
484 /* this causes an error if some other window manager is running */
485 XSelectInput(dpy, DefaultRootWindow(dpy), SubstructureRedirectMask);
486 XSync(dpy, False);
487 XSetErrorHandler(xerror);
488 XSync(dpy, False);
489 }
490
491 void
492 cleanup(void)
493 {
494 Arg a = {.ui = ~0};
495 Layout foo = { "", NULL };
496 Monitor *m;
497 size_t i;
498
499 view(&a);
500 selmon->lt[selmon->sellt] = &foo;
501 for (m = mons; m; m = m->next)
502 while (m->stack)
503 unmanage(m->stack, 0);
504 XUngrabKey(dpy, AnyKey, AnyModifier, root);
505 while (mons)
506 cleanupmon(mons);
507 for (i = 0; i < CurLast; i++)
508 drw_cur_free(drw, cursor[i]);
509 for (i = 0; i < LENGTH(colors); i++)
510 free(scheme[i]);
511 XDestroyWindow(dpy, wmcheckwin);
512 drw_free(drw);
513 XSync(dpy, False);
514 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
515 XDeleteProperty(dpy, root, netatom[NetActiveWindow]);
516 }
517
518 void
519 cleanupmon(Monitor *mon)
520 {
521 Monitor *m;
522
523 if (mon == mons)
524 mons = mons->next;
525 else {
526 for (m = mons; m && m->next != mon; m = m->next);
527 m->next = mon->next;
528 }
529 XUnmapWindow(dpy, mon->barwin);
530 XDestroyWindow(dpy, mon->barwin);
531 free(mon);
532 }
533
534 void
535 clientmessage(XEvent *e)
536 {
537 XClientMessageEvent *cme = &e->xclient;
538 Client *c = wintoclient(cme->window);
539
540 if (!c)
541 return;
542 if (cme->message_type == netatom[NetWMState]) {
543 if (cme->data.l[1] == netatom[NetWMFullscreen]
544 || cme->data.l[2] == netatom[NetWMFullscreen])
545 setfullscreen(c, (cme->data.l[0] == 1 /* _NET_WM_STATE_ADD */
546 || (cme->data.l[0] == 2 /* _NET_WM_STATE_TOGGLE */ && !c->isfullscreen)));
547 } else if (cme->message_type == netatom[NetActiveWindow]) {
548 if (c != selmon->sel && !c->isurgent)
549 seturgent(c, 1);
550 }
551 }
552
553 void
554 configure(Client *c)
555 {
556 XConfigureEvent ce;
557
558 ce.type = ConfigureNotify;
559 ce.display = dpy;
560 ce.event = c->win;
561 ce.window = c->win;
562 ce.x = c->x;
563 ce.y = c->y;
564 ce.width = c->w;
565 ce.height = c->h;
566 ce.border_width = c->bw;
567 ce.above = None;
568 ce.override_redirect = False;
569 XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&ce);
570 }
571
572 void
573 configurenotify(XEvent *e)
574 {
575 Monitor *m;
576 Client *c;
577 XConfigureEvent *ev = &e->xconfigure;
578 int dirty;
579
580 /* TODO: updategeom handling sucks, needs to be simplified */
581 if (ev->window == root) {
582 dirty = (sw != ev->width || sh != ev->height);
583 sw = ev->width;
584 sh = ev->height;
585 if (updategeom() || dirty) {
586 drw_resize(drw, sw, bh);
587 updatebars();
588 for (m = mons; m; m = m->next) {
589 for (c = m->clients; c; c = c->next)
590 if (c->isfullscreen)
591 resizeclient(c, m->mx, m->my, m->mw, m->mh);
592 XMoveResizeWindow(dpy, m->barwin, m->wx, m->by, m->ww, bh);
593 }
594 focus(NULL);
595 arrange(NULL);
596 }
597 }
598 }
599
600 void
601 configurerequest(XEvent *e)
602 {
603 Client *c;
604 Monitor *m;
605 XConfigureRequestEvent *ev = &e->xconfigurerequest;
606 XWindowChanges wc;
607
608 if ((c = wintoclient(ev->window))) {
609 if (ev->value_mask & CWBorderWidth)
610 c->bw = ev->border_width;
611 else if (c->isfloating || !selmon->lt[selmon->sellt]->arrange) {
612 m = c->mon;
613 if (ev->value_mask & CWX) {
614 c->oldx = c->x;
615 c->x = m->mx + ev->x;
616 }
617 if (ev->value_mask & CWY) {
618 c->oldy = c->y;
619 c->y = m->my + ev->y;
620 }
621 if (ev->value_mask & CWWidth) {
622 c->oldw = c->w;
623 c->w = ev->width;
624 }
625 if (ev->value_mask & CWHeight) {
626 c->oldh = c->h;
627 c->h = ev->height;
628 }
629 if ((c->x + c->w) > m->mx + m->mw && c->isfloating)
630 c->x = m->mx + (m->mw / 2 - WIDTH(c) / 2); /* center in x direction */
631 if ((c->y + c->h) > m->my + m->mh && c->isfloating)
632 c->y = m->my + (m->mh / 2 - HEIGHT(c) / 2); /* center in y direction */
633 if ((ev->value_mask & (CWX|CWY)) && !(ev->value_mask & (CWWidth|CWHeight)))
634 configure(c);
635 if (ISVISIBLE(c))
636 XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
637 } else
638 configure(c);
639 } else {
640 wc.x = ev->x;
641 wc.y = ev->y;
642 wc.width = ev->width;
643 wc.height = ev->height;
644 wc.border_width = ev->border_width;
645 wc.sibling = ev->above;
646 wc.stack_mode = ev->detail;
647 XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
648 }
649 XSync(dpy, False);
650 }
651
652 Monitor *
653 createmon(void)
654 {
655 Monitor *m;
656 unsigned int i;
657
658 m = ecalloc(1, sizeof(Monitor));
659 m->tagset[0] = m->tagset[1] = 1;
660 m->mfact = mfact;
661 m->nmaster = nmaster;
662 m->showbar = showbar;
663 m->topbar = topbar;
664 m->lt[0] = &layouts[0];
665 m->lt[1] = &layouts[1 % LENGTH(layouts)];
666 strncpy(m->ltsymbol, layouts[0].symbol, sizeof m->ltsymbol);
667 m->pertag = ecalloc(1, sizeof(Pertag));
668 m->pertag->curtag = m->pertag->prevtag = 1;
669
670 for (i = 0; i <= LENGTH(tags); i++) {
671 m->pertag->nmasters[i] = m->nmaster;
672 m->pertag->mfacts[i] = m->mfact;
673
674 m->pertag->ltidxs[i][0] = m->lt[0];
675 m->pertag->ltidxs[i][1] = m->lt[1];
676 m->pertag->sellts[i] = m->sellt;
677
678 m->pertag->showbars[i] = m->showbar;
679 }
680
681 return m;
682 }
683
684 void
685 destroynotify(XEvent *e)
686 {
687 Client *c;
688 XDestroyWindowEvent *ev = &e->xdestroywindow;
689
690 if ((c = wintoclient(ev->window)))
691 unmanage(c, 1);
692 }
693
694 void
695 detach(Client *c)
696 {
697 Client **tc;
698
699 for (tc = &c->mon->clients; *tc && *tc != c; tc = &(*tc)->next);
700 *tc = c->next;
701 }
702
703 void
704 detachstack(Client *c)
705 {
706 Client **tc, *t;
707
708 for (tc = &c->mon->stack; *tc && *tc != c; tc = &(*tc)->snext);
709 *tc = c->snext;
710
711 if (c == c->mon->sel) {
712 for (t = c->mon->stack; t && !ISVISIBLE(t); t = t->snext);
713 c->mon->sel = t;
714 }
715 }
716
717 Monitor *
718 dirtomon(int dir)
719 {
720 Monitor *m = NULL;
721
722 if (dir > 0) {
723 if (!(m = selmon->next))
724 m = mons;
725 } else if (selmon == mons)
726 for (m = mons; m->next; m = m->next);
727 else
728 for (m = mons; m->next != selmon; m = m->next);
729 return m;
730 }
731
732 void
733 drawbar(Monitor *m)
734 {
735 int x, w, sw = 0;
736 int boxs = drw->fonts->h / 9;
737 int boxw = drw->fonts->h / 6 + 2;
738 unsigned int i, occ = 0, urg = 0;
739 Client *c;
740
741 /* draw status first so it can be overdrawn by tags later */
742 if (m == selmon) { /* status is only drawn on selected monitor */
743 drw_setscheme(drw, scheme[SchemeNorm]);
744 sw = TEXTW(stext) - lrpad + 2; /* 2px right padding */
745 drw_text(drw, m->ww - sw, 0, sw, bh, 0, stext, 0);
746 }
747
748 for (c = m->clients; c; c = c->next) {
749 occ |= c->tags == 255 ? 0 : c->tags;
750 if (c->isurgent)
751 urg |= c->tags;
752 }
753 x = 0;
754 for (i = 0; i < LENGTH(tags); i++) {
755 /* do not draw vacant tags */
756 if (!(occ & 1 << i || m->tagset[m->seltags] & 1 << i))
757 continue;
758
759 w = TEXTW(tags[i]);
760 drw_setscheme(drw, scheme[m->tagset[m->seltags] & 1 << i ? SchemeSel : SchemeNorm]);
761 drw_text(drw, x, 0, w, bh, lrpad / 2, tags[i], urg & 1 << i);
762 x += w;
763 }
764 w = blw = TEXTW(m->ltsymbol);
765 drw_setscheme(drw, scheme[SchemeNorm]);
766 x = drw_text(drw, x, 0, w, bh, lrpad / 2, m->ltsymbol, 0);
767
768 if ((w = m->ww - sw - x) > bh) {
769 if (m->sel) {
770 /*drw_setscheme(drw, scheme[m == selmon ? SchemeSel : SchemeNorm]);*/
771 drw_text(drw, x, 0, w, bh, lrpad / 2, m->sel->name, 0);
772 if (m->sel->isfloating)
773 drw_rect(drw, x + boxs, boxs, boxw, boxw, m->sel->isfixed, 0);
774 } else {
775 drw_setscheme(drw, scheme[SchemeNorm]);
776 drw_rect(drw, x, 0, w, bh, 1, 1);
777 }
778 }
779 drw_map(drw, m->barwin, 0, 0, m->ww, bh);
780 }
781
782 void
783 drawbars(void)
784 {
785 Monitor *m;
786
787 for (m = mons; m; m = m->next)
788 drawbar(m);
789 }
790
791 void
792 enternotify(XEvent *e)
793 {
794 Client *c;
795 Monitor *m;
796 XCrossingEvent *ev = &e->xcrossing;
797
798 if ((ev->mode != NotifyNormal || ev->detail == NotifyInferior) && ev->window != root)
799 return;
800 c = wintoclient(ev->window);
801 m = c ? c->mon : wintomon(ev->window);
802 if (m != selmon) {
803 unfocus(selmon->sel, 1);
804 selmon = m;
805 } else if (!c || c == selmon->sel)
806 return;
807 focus(c);
808 }
809
810 void
811 expose(XEvent *e)
812 {
813 Monitor *m;
814 XExposeEvent *ev = &e->xexpose;
815
816 if (ev->count == 0 && (m = wintomon(ev->window)))
817 drawbar(m);
818 }
819
820 void
821 focus(Client *c)
822 {
823 if (!c || !ISVISIBLE(c))
824 for (c = selmon->stack; c && !ISVISIBLE(c); c = c->snext);
825 if (selmon->sel && selmon->sel != c)
826 unfocus(selmon->sel, 0);
827 if (c) {
828 if (c->mon != selmon)
829 selmon = c->mon;
830 if (c->isurgent)
831 seturgent(c, 0);
832 detachstack(c);
833 attachstack(c);
834 grabbuttons(c, 1);
835 XSetWindowBorder(dpy, c->win, scheme[SchemeSel][ColBorder].pixel);
836 setfocus(c);
837 } else {
838 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
839 XDeleteProperty(dpy, root, netatom[NetActiveWindow]);
840 }
841 selmon->sel = c;
842 drawbars();
843 }
844
845 /* there are some broken focus acquiring clients needing extra handling */
846 void
847 focusin(XEvent *e)
848 {
849 XFocusChangeEvent *ev = &e->xfocus;
850
851 if (selmon->sel && ev->window != selmon->sel->win)
852 setfocus(selmon->sel);
853 }
854
855 void
856 focusmon(const Arg *arg)
857 {
858 Monitor *m;
859
860 if (!mons->next)
861 return;
862 if ((m = dirtomon(arg->i)) == selmon)
863 return;
864 unfocus(selmon->sel, 0);
865 selmon = m;
866 focus(NULL);
867 }
868
869 void
870 focusstack(const Arg *arg)
871 {
872 Client *c = NULL, *i;
873
874 if (!selmon->sel)
875 return;
876 if (arg->i > 0) {
877 for (c = selmon->sel->next; c && !ISVISIBLE(c); c = c->next);
878 if (!c)
879 for (c = selmon->clients; c && !ISVISIBLE(c); c = c->next);
880 } else {
881 for (i = selmon->clients; i != selmon->sel; i = i->next)
882 if (ISVISIBLE(i))
883 c = i;
884 if (!c)
885 for (; i; i = i->next)
886 if (ISVISIBLE(i))
887 c = i;
888 }
889 if (c) {
890 focus(c);
891 restack(selmon);
892 }
893 }
894
895 Atom
896 getatomprop(Client *c, Atom prop)
897 {
898 int di;
899 unsigned long dl;
900 unsigned char *p = NULL;
901 Atom da, atom = None;
902
903 if (XGetWindowProperty(dpy, c->win, prop, 0L, sizeof atom, False, XA_ATOM,
904 &da, &di, &dl, &dl, &p) == Success && p) {
905 atom = *(Atom *)p;
906 XFree(p);
907 }
908 return atom;
909 }
910
911 int
912 getrootptr(int *x, int *y)
913 {
914 int di;
915 unsigned int dui;
916 Window dummy;
917
918 return XQueryPointer(dpy, root, &dummy, &dummy, x, y, &di, &di, &dui);
919 }
920
921 long
922 getstate(Window w)
923 {
924 int format;
925 long result = -1;
926 unsigned char *p = NULL;
927 unsigned long n, extra;
928 Atom real;
929
930 if (XGetWindowProperty(dpy, w, wmatom[WMState], 0L, 2L, False, wmatom[WMState],
931 &real, &format, &n, &extra, (unsigned char **)&p) != Success)
932 return -1;
933 if (n != 0)
934 result = *p;
935 XFree(p);
936 return result;
937 }
938
939 int
940 gettextprop(Window w, Atom atom, char *text, unsigned int size)
941 {
942 char **list = NULL;
943 int n;
944 XTextProperty name;
945
946 if (!text || size == 0)
947 return 0;
948 text[0] = '\0';
949 if (!XGetTextProperty(dpy, w, &name, atom) || !name.nitems)
950 return 0;
951 if (name.encoding == XA_STRING)
952 strncpy(text, (char *)name.value, size - 1);
953 else {
954 if (XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success && n > 0 && *list) {
955 strncpy(text, *list, size - 1);
956 XFreeStringList(list);
957 }
958 }
959 text[size - 1] = '\0';
960 XFree(name.value);
961 return 1;
962 }
963
964 void
965 grabbuttons(Client *c, int focused)
966 {
967 updatenumlockmask();
968 {
969 unsigned int i, j;
970 unsigned int modifiers[] = { 0, LockMask, numlockmask, numlockmask|LockMask };
971 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
972 if (!focused)
973 XGrabButton(dpy, AnyButton, AnyModifier, c->win, False,
974 BUTTONMASK, GrabModeSync, GrabModeSync, None, None);
975 for (i = 0; i < LENGTH(buttons); i++)
976 if (buttons[i].click == ClkClientWin)
977 for (j = 0; j < LENGTH(modifiers); j++)
978 XGrabButton(dpy, buttons[i].button,
979 buttons[i].mask | modifiers[j],
980 c->win, False, BUTTONMASK,
981 GrabModeAsync, GrabModeSync, None, None);
982 }
983 }
984
985 void
986 grabkeys(void)
987 {
988 updatenumlockmask();
989 {
990 unsigned int i, j;
991 unsigned int modifiers[] = { 0, LockMask, numlockmask, numlockmask|LockMask };
992 KeyCode code;
993
994 XUngrabKey(dpy, AnyKey, AnyModifier, root);
995 for (i = 0; i < LENGTH(keys); i++)
996 if ((code = XKeysymToKeycode(dpy, keys[i].keysym)))
997 for (j = 0; j < LENGTH(modifiers); j++)
998 XGrabKey(dpy, code, keys[i].mod | modifiers[j], root,
999 True, GrabModeAsync, GrabModeAsync);
1000 }
1001 }
1002
1003 void
1004 incnmaster(const Arg *arg)
1005 {
1006 selmon->nmaster = selmon->pertag->nmasters[selmon->pertag->curtag] = MAX(selmon->nmaster + arg->i, 0);
1007 arrange(selmon);
1008 }
1009
1010 #ifdef XINERAMA
1011 static int
1012 isuniquegeom(XineramaScreenInfo *unique, size_t n, XineramaScreenInfo *info)
1013 {
1014 while (n--)
1015 if (unique[n].x_org == info->x_org && unique[n].y_org == info->y_org
1016 && unique[n].width == info->width && unique[n].height == info->height)
1017 return 0;
1018 return 1;
1019 }
1020 #endif /* XINERAMA */
1021
1022 void
1023 keypress(XEvent *e)
1024 {
1025 unsigned int i;
1026 KeySym keysym;
1027 XKeyEvent *ev;
1028
1029 ev = &e->xkey;
1030 keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
1031 for (i = 0; i < LENGTH(keys); i++)
1032 if (keysym == keys[i].keysym
1033 && CLEANMASK(keys[i].mod) == CLEANMASK(ev->state)
1034 && keys[i].func)
1035 keys[i].func(&(keys[i].arg));
1036 }
1037
1038 void
1039 killclient(const Arg *arg)
1040 {
1041 if (!selmon->sel)
1042 return;
1043 if (!sendevent(selmon->sel, wmatom[WMDelete])) {
1044 XGrabServer(dpy);
1045 XSetErrorHandler(xerrordummy);
1046 XSetCloseDownMode(dpy, DestroyAll);
1047 XKillClient(dpy, selmon->sel->win);
1048 XSync(dpy, False);
1049 XSetErrorHandler(xerror);
1050 XUngrabServer(dpy);
1051 }
1052 }
1053
1054 void
1055 manage(Window w, XWindowAttributes *wa)
1056 {
1057 Client *c, *t = NULL;
1058 Window trans = None;
1059 XWindowChanges wc;
1060
1061 c = ecalloc(1, sizeof(Client));
1062 c->win = w;
1063 /* geometry */
1064 c->x = c->oldx = wa->x;
1065 c->y = c->oldy = wa->y;
1066 c->w = c->oldw = wa->width;
1067 c->h = c->oldh = wa->height;
1068 c->oldbw = wa->border_width;
1069
1070 updatetitle(c);
1071 if (XGetTransientForHint(dpy, w, &trans) && (t = wintoclient(trans))) {
1072 c->mon = t->mon;
1073 c->tags = t->tags;
1074 } else {
1075 c->mon = selmon;
1076 applyrules(c);
1077 }
1078
1079 if (c->x + WIDTH(c) > c->mon->mx + c->mon->mw)
1080 c->x = c->mon->mx + c->mon->mw - WIDTH(c);
1081 if (c->y + HEIGHT(c) > c->mon->my + c->mon->mh)
1082 c->y = c->mon->my + c->mon->mh - HEIGHT(c);
1083 c->x = MAX(c->x, c->mon->mx);
1084 /* only fix client y-offset, if the client center might cover the bar */
1085 c->y = MAX(c->y, ((c->mon->by == c->mon->my) && (c->x + (c->w / 2) >= c->mon->wx)
1086 && (c->x + (c->w / 2) < c->mon->wx + c->mon->ww)) ? bh : c->mon->my);
1087 c->bw = borderpx;
1088
1089 switch (c->floatpos) {
1090 case 1: case 4: case 7:
1091 c->x = 0;
1092 break;
1093 case 3: case 6: case 9:
1094 c->x = c->mon->mw - WIDTH(c);
1095 break;
1096 case 2: case 5: case 8: default:
1097 c->x = (c->mon->mw - WIDTH(c)) / 2;
1098 break;
1099 }
1100
1101 switch (c->floatpos) {
1102 case 1: case 2: case 3:
1103 c->y = 0;
1104 break;
1105 case 7: case 8: case 9:
1106 c->y = c->mon->mh - HEIGHT(c);
1107 break;
1108 case 4: case 5: case 6: default:
1109 c->y = (c->mon->mh - HEIGHT(c)) / 2;
1110 break;
1111 }
1112
1113 wc.border_width = c->bw;
1114 XConfigureWindow(dpy, w, CWBorderWidth, &wc);
1115 XSetWindowBorder(dpy, w, scheme[SchemeNorm][ColBorder].pixel);
1116 configure(c); /* propagates border_width, if size doesn't change */
1117 updatewindowtype(c);
1118 updatesizehints(c);
1119 updatewmhints(c);
1120 XSelectInput(dpy, w, EnterWindowMask|FocusChangeMask|PropertyChangeMask|StructureNotifyMask);
1121 grabbuttons(c, 0);
1122 if (!c->isfloating)
1123 c->isfloating = c->oldstate = trans != None || c->isfixed;
1124 if (c->isfloating)
1125 XRaiseWindow(dpy, c->win);
1126 attach(c);
1127 attachstack(c);
1128 XChangeProperty(dpy, root, netatom[NetClientList], XA_WINDOW, 32, PropModeAppend,
1129 (unsigned char *) &(c->win), 1);
1130 XMoveResizeWindow(dpy, c->win, c->x + 2 * sw, c->y, c->w, c->h); /* some windows require this */
1131 setclientstate(c, NormalState);
1132 if (c->mon == selmon)
1133 unfocus(selmon->sel, 0);
1134 c->mon->sel = c;
1135 arrange(c->mon);
1136 XMapWindow(dpy, c->win);
1137 focus(NULL);
1138 }
1139
1140 void
1141 mappingnotify(XEvent *e)
1142 {
1143 XMappingEvent *ev = &e->xmapping;
1144
1145 XRefreshKeyboardMapping(ev);
1146 if (ev->request == MappingKeyboard)
1147 grabkeys();
1148 }
1149
1150 void
1151 maprequest(XEvent *e)
1152 {
1153 static XWindowAttributes wa;
1154 XMapRequestEvent *ev = &e->xmaprequest;
1155
1156 if (!XGetWindowAttributes(dpy, ev->window, &wa))
1157 return;
1158 if (wa.override_redirect)
1159 return;
1160 if (!wintoclient(ev->window))
1161 manage(ev->window, &wa);
1162 }
1163
1164 void
1165 monocle(Monitor *m)
1166 {
1167 unsigned int n = 0;
1168 Client *c;
1169
1170 for (c = m->clients; c; c = c->next) {
1171 c->bw = 0;
1172 if (ISVISIBLE(c))
1173 n++;
1174 }
1175 if (n > 0) /* override layout symbol */
1176 snprintf(m->ltsymbol, sizeof m->ltsymbol, "[%d]", n);
1177 for (c = nexttiled(m->clients); c; c = nexttiled(c->next))
1178 resize(c, m->wx, m->wy, m->ww - 2 * c->bw, m->wh - 2 * c->bw, 0);
1179 }
1180
1181 void
1182 motionnotify(XEvent *e)
1183 {
1184 static Monitor *mon = NULL;
1185 Monitor *m;
1186 XMotionEvent *ev = &e->xmotion;
1187
1188 if (ev->window != root)
1189 return;
1190 if ((m = recttomon(ev->x_root, ev->y_root, 1, 1)) != mon && mon) {
1191 unfocus(selmon->sel, 1);
1192 selmon = m;
1193 focus(NULL);
1194 }
1195 mon = m;
1196 }
1197
1198 void
1199 movemouse(const Arg *arg)
1200 {
1201 int x, y, ocx, ocy, nx, ny;
1202 Client *c;
1203 Monitor *m;
1204 XEvent ev;
1205 Time lasttime = 0;
1206
1207 if (!(c = selmon->sel))
1208 return;
1209 if (c->isfullscreen) /* no support moving fullscreen windows by mouse */
1210 return;
1211 restack(selmon);
1212 ocx = c->x;
1213 ocy = c->y;
1214 if (XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
1215 None, cursor[CurMove]->cursor, CurrentTime) != GrabSuccess)
1216 return;
1217 if (!getrootptr(&x, &y))
1218 return;
1219 do {
1220 XMaskEvent(dpy, MOUSEMASK|ExposureMask|SubstructureRedirectMask, &ev);
1221 switch(ev.type) {
1222 case ConfigureRequest:
1223 case Expose:
1224 case MapRequest:
1225 handler[ev.type](&ev);
1226 break;
1227 case MotionNotify:
1228 if ((ev.xmotion.time - lasttime) <= (1000 / 60))
1229 continue;
1230 lasttime = ev.xmotion.time;
1231
1232 nx = ocx + (ev.xmotion.x - x);
1233 ny = ocy + (ev.xmotion.y - y);
1234 if (abs(selmon->wx - nx) < snap)
1235 nx = selmon->wx;
1236 else if (abs((selmon->wx + selmon->ww) - (nx + WIDTH(c))) < snap)
1237 nx = selmon->wx + selmon->ww - WIDTH(c);
1238 if (abs(selmon->wy - ny) < snap)
1239 ny = selmon->wy;
1240 else if (abs((selmon->wy + selmon->wh) - (ny + HEIGHT(c))) < snap)
1241 ny = selmon->wy + selmon->wh - HEIGHT(c);
1242 if (!c->isfloating && selmon->lt[selmon->sellt]->arrange
1243 && (abs(nx - c->x) > snap || abs(ny - c->y) > snap))
1244 togglefloating(NULL);
1245 if (!selmon->lt[selmon->sellt]->arrange || c->isfloating)
1246 resize(c, nx, ny, c->w, c->h, 1);
1247 break;
1248 }
1249 } while (ev.type != ButtonRelease);
1250 XUngrabPointer(dpy, CurrentTime);
1251 if ((m = recttomon(c->x, c->y, c->w, c->h)) != selmon) {
1252 sendmon(c, m);
1253 selmon = m;
1254 focus(NULL);
1255 }
1256 }
1257
1258 Client *
1259 nexttiled(Client *c)
1260 {
1261 for (; c && (c->isfloating || !ISVISIBLE(c)); c = c->next);
1262 return c;
1263 }
1264
1265 void
1266 pop(Client *c)
1267 {
1268 detach(c);
1269 attach(c);
1270 focus(c);
1271 arrange(c->mon);
1272 }
1273
1274 void
1275 propertynotify(XEvent *e)
1276 {
1277 Client *c;
1278 Window trans;
1279 XPropertyEvent *ev = &e->xproperty;
1280
1281 if ((ev->window == root) && (ev->atom == XA_WM_NAME))
1282 updatestatus();
1283 else if (ev->state == PropertyDelete)
1284 return; /* ignore */
1285 else if ((c = wintoclient(ev->window))) {
1286 switch(ev->atom) {
1287 default: break;
1288 case XA_WM_TRANSIENT_FOR:
1289 if (!c->isfloating && (XGetTransientForHint(dpy, c->win, &trans)) &&
1290 (c->isfloating = (wintoclient(trans)) != NULL))
1291 arrange(c->mon);
1292 break;
1293 case XA_WM_NORMAL_HINTS:
1294 updatesizehints(c);
1295 break;
1296 case XA_WM_HINTS:
1297 updatewmhints(c);
1298 drawbars();
1299 break;
1300 }
1301 if (ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
1302 updatetitle(c);
1303 if (c == c->mon->sel)
1304 drawbar(c->mon);
1305 }
1306 if (ev->atom == netatom[NetWMWindowType])
1307 updatewindowtype(c);
1308 }
1309 }
1310
1311 void
1312 quit(const Arg *arg)
1313 {
1314 running = 0;
1315 }
1316
1317 Monitor *
1318 recttomon(int x, int y, int w, int h)
1319 {
1320 Monitor *m, *r = selmon;
1321 int a, area = 0;
1322
1323 for (m = mons; m; m = m->next)
1324 if ((a = INTERSECT(x, y, w, h, m)) > area) {
1325 area = a;
1326 r = m;
1327 }
1328 return r;
1329 }
1330
1331 void
1332 resize(Client *c, int x, int y, int w, int h, int interact)
1333 {
1334 if (applysizehints(c, &x, &y, &w, &h, interact))
1335 resizeclient(c, x, y, w, h);
1336 }
1337
1338 void
1339 resizeclient(Client *c, int x, int y, int w, int h)
1340 {
1341 XWindowChanges wc;
1342
1343 c->oldx = c->x; c->x = wc.x = x;
1344 c->oldy = c->y; c->y = wc.y = y;
1345 c->oldw = c->w; c->w = wc.width = w;
1346 c->oldh = c->h; c->h = wc.height = h;
1347 wc.border_width = c->bw;
1348 XConfigureWindow(dpy, c->win, CWX|CWY|CWWidth|CWHeight|CWBorderWidth, &wc);
1349 configure(c);
1350 XSync(dpy, False);
1351 }
1352
1353 void
1354 resizemouse(const Arg *arg)
1355 {
1356 int ocx, ocy, nw, nh;
1357 Client *c;
1358 Monitor *m;
1359 XEvent ev;
1360 Time lasttime = 0;
1361
1362 if (!(c = selmon->sel))
1363 return;
1364 if (c->isfullscreen) /* no support resizing fullscreen windows by mouse */
1365 return;
1366 restack(selmon);
1367 ocx = c->x;
1368 ocy = c->y;
1369 if (XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
1370 None, cursor[CurResize]->cursor, CurrentTime) != GrabSuccess)
1371 return;
1372 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->bw - 1, c->h + c->bw - 1);
1373 do {
1374 XMaskEvent(dpy, MOUSEMASK|ExposureMask|SubstructureRedirectMask, &ev);
1375 switch(ev.type) {
1376 case ConfigureRequest:
1377 case Expose:
1378 case MapRequest:
1379 handler[ev.type](&ev);
1380 break;
1381 case MotionNotify:
1382 if ((ev.xmotion.time - lasttime) <= (1000 / 60))
1383 continue;
1384 lasttime = ev.xmotion.time;
1385
1386 nw = MAX(ev.xmotion.x - ocx - 2 * c->bw + 1, 1);
1387 nh = MAX(ev.xmotion.y - ocy - 2 * c->bw + 1, 1);
1388 if (c->mon->wx + nw >= selmon->wx && c->mon->wx + nw <= selmon->wx + selmon->ww
1389 && c->mon->wy + nh >= selmon->wy && c->mon->wy + nh <= selmon->wy + selmon->wh)
1390 {
1391 if (!c->isfloating && selmon->lt[selmon->sellt]->arrange
1392 && (abs(nw - c->w) > snap || abs(nh - c->h) > snap))
1393 togglefloating(NULL);
1394 }
1395 if (!selmon->lt[selmon->sellt]->arrange || c->isfloating)
1396 resize(c, c->x, c->y, nw, nh, 1);
1397 break;
1398 }
1399 } while (ev.type != ButtonRelease);
1400 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->bw - 1, c->h + c->bw - 1);
1401 XUngrabPointer(dpy, CurrentTime);
1402 while (XCheckMaskEvent(dpy, EnterWindowMask, &ev));
1403 if ((m = recttomon(c->x, c->y, c->w, c->h)) != selmon) {
1404 sendmon(c, m);
1405 selmon = m;
1406 focus(NULL);
1407 }
1408 }
1409
1410 void
1411 restack(Monitor *m)
1412 {
1413 Client *c;
1414 XEvent ev;
1415 XWindowChanges wc;
1416
1417 drawbar(m);
1418 if (!m->sel)
1419 return;
1420 if (m->sel->isfloating || !m->lt[m->sellt]->arrange)
1421 XRaiseWindow(dpy, m->sel->win);
1422 if (m->lt[m->sellt]->arrange) {
1423 wc.stack_mode = Below;
1424 wc.sibling = m->barwin;
1425 for (c = m->stack; c; c = c->snext)
1426 if (!c->isfloating && ISVISIBLE(c)) {
1427 XConfigureWindow(dpy, c->win, CWSibling|CWStackMode, &wc);
1428 wc.sibling = c->win;
1429 }
1430 }
1431 XSync(dpy, False);
1432 while (XCheckMaskEvent(dpy, EnterWindowMask, &ev));
1433 }
1434
1435 void
1436 run(void)
1437 {
1438 XEvent ev;
1439 /* main event loop */
1440 XSync(dpy, False);
1441 while (running && !XNextEvent(dpy, &ev))
1442 if (handler[ev.type])
1443 handler[ev.type](&ev); /* call handler */
1444 }
1445
1446 void
1447 scan(void)
1448 {
1449 unsigned int i, num;
1450 Window d1, d2, *wins = NULL;
1451 XWindowAttributes wa;
1452
1453 if (XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
1454 for (i = 0; i < num; i++) {
1455 if (!XGetWindowAttributes(dpy, wins[i], &wa)
1456 || wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
1457 continue;
1458 if (wa.map_state == IsViewable || getstate(wins[i]) == IconicState)
1459 manage(wins[i], &wa);
1460 }
1461 for (i = 0; i < num; i++) { /* now the transients */
1462 if (!XGetWindowAttributes(dpy, wins[i], &wa))
1463 continue;
1464 if (XGetTransientForHint(dpy, wins[i], &d1)
1465 && (wa.map_state == IsViewable || getstate(wins[i]) == IconicState))
1466 manage(wins[i], &wa);
1467 }
1468 if (wins)
1469 XFree(wins);
1470 }
1471 }
1472
1473 void
1474 sendmon(Client *c, Monitor *m)
1475 {
1476 if (c->mon == m)
1477 return;
1478 unfocus(c, 1);
1479 detach(c);
1480 detachstack(c);
1481 c->mon = m;
1482 c->tags = m->tagset[m->seltags]; /* assign tags of target monitor */
1483 attach(c);
1484 attachstack(c);
1485 focus(NULL);
1486 arrange(NULL);
1487 }
1488
1489 void
1490 setclientstate(Client *c, long state)
1491 {
1492 long data[] = { state, None };
1493
1494 XChangeProperty(dpy, c->win, wmatom[WMState], wmatom[WMState], 32,
1495 PropModeReplace, (unsigned char *)data, 2);
1496 }
1497
1498 int
1499 sendevent(Client *c, Atom proto)
1500 {
1501 int n;
1502 Atom *protocols;
1503 int exists = 0;
1504 XEvent ev;
1505
1506 if (XGetWMProtocols(dpy, c->win, &protocols, &n)) {
1507 while (!exists && n--)
1508 exists = protocols[n] == proto;
1509 XFree(protocols);
1510 }
1511 if (exists) {
1512 ev.type = ClientMessage;
1513 ev.xclient.window = c->win;
1514 ev.xclient.message_type = wmatom[WMProtocols];
1515 ev.xclient.format = 32;
1516 ev.xclient.data.l[0] = proto;
1517 ev.xclient.data.l[1] = CurrentTime;
1518 XSendEvent(dpy, c->win, False, NoEventMask, &ev);
1519 }
1520 return exists;
1521 }
1522
1523 void
1524 setfocus(Client *c)
1525 {
1526 if (!c->neverfocus) {
1527 XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
1528 XChangeProperty(dpy, root, netatom[NetActiveWindow],
1529 XA_WINDOW, 32, PropModeReplace,
1530 (unsigned char *) &(c->win), 1);
1531 }
1532 sendevent(c, wmatom[WMTakeFocus]);
1533 }
1534
1535 void
1536 setfullscreen(Client *c, int fullscreen)
1537 {
1538 if (fullscreen && !c->isfullscreen) {
1539 XChangeProperty(dpy, c->win, netatom[NetWMState], XA_ATOM, 32,
1540 PropModeReplace, (unsigned char*)&netatom[NetWMFullscreen], 1);
1541 c->isfullscreen = 1;
1542 c->oldstate = c->isfloating;
1543 c->oldbw = c->bw;
1544 c->bw = 0;
1545 c->isfloating = 1;
1546 resizeclient(c, c->mon->mx, c->mon->my, c->mon->mw, c->mon->mh);
1547 XRaiseWindow(dpy, c->win);
1548 } else if (!fullscreen && c->isfullscreen){
1549 XChangeProperty(dpy, c->win, netatom[NetWMState], XA_ATOM, 32,
1550 PropModeReplace, (unsigned char*)0, 0);
1551 c->isfullscreen = 0;
1552 c->isfloating = c->oldstate;
1553 c->bw = c->oldbw;
1554 c->x = c->oldx;
1555 c->y = c->oldy;
1556 c->w = c->oldw;
1557 c->h = c->oldh;
1558 resizeclient(c, c->x, c->y, c->w, c->h);
1559 arrange(c->mon);
1560 }
1561 }
1562
1563 void
1564 setlayout(const Arg *arg)
1565 {
1566 if (!arg || !arg->v || arg->v != selmon->lt[selmon->sellt])
1567 selmon->sellt = selmon->pertag->sellts[selmon->pertag->curtag] ^= 1;
1568 if (arg && arg->v)
1569 selmon->lt[selmon->sellt] = selmon->pertag->ltidxs[selmon->pertag->curtag][selmon->sellt] = (Layout *)arg->v;
1570 strncpy(selmon->ltsymbol, selmon->lt[selmon->sellt]->symbol, sizeof selmon->ltsymbol);
1571 if (selmon->sel)
1572 arrange(selmon);
1573 else
1574 drawbar(selmon);
1575 }
1576
1577 /* arg > 1.0 will set mfact absolutely */
1578 void
1579 setmfact(const Arg *arg)
1580 {
1581 float f;
1582
1583 if (!arg || !selmon->lt[selmon->sellt]->arrange)
1584 return;
1585 f = arg->f < 1.0 ? arg->f + selmon->mfact : arg->f - 1.0;
1586 if (f < 0.1 || f > 0.9)
1587 return;
1588 selmon->mfact = selmon->pertag->mfacts[selmon->pertag->curtag] = f;
1589 arrange(selmon);
1590 }
1591
1592 void
1593 setup(void)
1594 {
1595 int i;
1596 XSetWindowAttributes wa;
1597 Atom utf8string;
1598
1599 /* clean up any zombies immediately */
1600 sigchld(0);
1601
1602 /* init screen */
1603 screen = DefaultScreen(dpy);
1604 sw = DisplayWidth(dpy, screen);
1605 sh = DisplayHeight(dpy, screen);
1606 root = RootWindow(dpy, screen);
1607 drw = drw_create(dpy, screen, root, sw, sh);
1608 if (!drw_fontset_create(drw, fonts, LENGTH(fonts)))
1609 die("no fonts could be loaded.");
1610 lrpad = drw->fonts->h;
1611 bh = drw->fonts->h + 2;
1612 updategeom();
1613 /* init atoms */
1614 utf8string = XInternAtom(dpy, "UTF8_STRING", False);
1615 wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
1616 wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
1617 wmatom[WMState] = XInternAtom(dpy, "WM_STATE", False);
1618 wmatom[WMTakeFocus] = XInternAtom(dpy, "WM_TAKE_FOCUS", False);
1619 netatom[NetActiveWindow] = XInternAtom(dpy, "_NET_ACTIVE_WINDOW", False);
1620 netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
1621 netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
1622 netatom[NetWMState] = XInternAtom(dpy, "_NET_WM_STATE", False);
1623 netatom[NetWMCheck] = XInternAtom(dpy, "_NET_SUPPORTING_WM_CHECK", False);
1624 netatom[NetWMFullscreen] = XInternAtom(dpy, "_NET_WM_STATE_FULLSCREEN", False);
1625 netatom[NetWMWindowType] = XInternAtom(dpy, "_NET_WM_WINDOW_TYPE", False);
1626 netatom[NetWMWindowTypeDialog] = XInternAtom(dpy, "_NET_WM_WINDOW_TYPE_DIALOG", False);
1627 netatom[NetClientList] = XInternAtom(dpy, "_NET_CLIENT_LIST", False);
1628 /* init cursors */
1629 cursor[CurNormal] = drw_cur_create(drw, XC_left_ptr);
1630 cursor[CurResize] = drw_cur_create(drw, XC_sizing);
1631 cursor[CurMove] = drw_cur_create(drw, XC_fleur);
1632 /* init appearance */
1633 scheme = ecalloc(LENGTH(colors), sizeof(Clr *));
1634 for (i = 0; i < LENGTH(colors); i++)
1635 scheme[i] = drw_scm_create(drw, colors[i], 3);
1636 /* init bars */
1637 updatebars();
1638 updatestatus();
1639 /* supporting window for NetWMCheck */
1640 wmcheckwin = XCreateSimpleWindow(dpy, root, 0, 0, 1, 1, 0, 0, 0);
1641 XChangeProperty(dpy, wmcheckwin, netatom[NetWMCheck], XA_WINDOW, 32,
1642 PropModeReplace, (unsigned char *) &wmcheckwin, 1);
1643 XChangeProperty(dpy, wmcheckwin, netatom[NetWMName], utf8string, 8,
1644 PropModeReplace, (unsigned char *) "dwm", 3);
1645 XChangeProperty(dpy, root, netatom[NetWMCheck], XA_WINDOW, 32,
1646 PropModeReplace, (unsigned char *) &wmcheckwin, 1);
1647 /* EWMH support per view */
1648 XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
1649 PropModeReplace, (unsigned char *) netatom, NetLast);
1650 XDeleteProperty(dpy, root, netatom[NetClientList]);
1651 /* select events */
1652 wa.cursor = cursor[CurNormal]->cursor;
1653 wa.event_mask = SubstructureRedirectMask|SubstructureNotifyMask
1654 |ButtonPressMask|PointerMotionMask|EnterWindowMask
1655 |LeaveWindowMask|StructureNotifyMask|PropertyChangeMask;
1656 XChangeWindowAttributes(dpy, root, CWEventMask|CWCursor, &wa);
1657 XSelectInput(dpy, root, wa.event_mask);
1658 grabkeys();
1659 focus(NULL);
1660 }
1661
1662
1663 void
1664 seturgent(Client *c, int urg)
1665 {
1666 XWMHints *wmh;
1667
1668 c->isurgent = urg;
1669 if (!(wmh = XGetWMHints(dpy, c->win)))
1670 return;
1671 wmh->flags = urg ? (wmh->flags | XUrgencyHint) : (wmh->flags & ~XUrgencyHint);
1672 XSetWMHints(dpy, c->win, wmh);
1673 XFree(wmh);
1674 }
1675
1676 void
1677 showhide(Client *c)
1678 {
1679 if (!c)
1680 return;
1681 if (ISVISIBLE(c)) {
1682 /* show clients top down */
1683 XMoveWindow(dpy, c->win, c->x, c->y);
1684 if ((!c->mon->lt[c->mon->sellt]->arrange || c->isfloating) && !c->isfullscreen)
1685 resize(c, c->x, c->y, c->w, c->h, 0);
1686 showhide(c->snext);
1687 } else {
1688 /* hide clients bottom up */
1689 showhide(c->snext);
1690 XMoveWindow(dpy, c->win, WIDTH(c) * -2, c->y);
1691 }
1692 }
1693
1694 void
1695 sigchld(int unused)
1696 {
1697 if (signal(SIGCHLD, sigchld) == SIG_ERR)
1698 die("can't install SIGCHLD handler:");
1699 while (0 < waitpid(-1, NULL, WNOHANG));
1700 }
1701
1702 void
1703 spawn(const Arg *arg)
1704 {
1705 if (arg->v == dmenucmd)
1706 dmenumon[0] = '0' + selmon->num;
1707 if (fork() == 0) {
1708 if (dpy)
1709 close(ConnectionNumber(dpy));
1710 setsid();
1711 execvp(((char **)arg->v)[0], (char **)arg->v);
1712 fprintf(stderr, "dwm: execvp %s", ((char **)arg->v)[0]);
1713 perror(" failed");
1714 exit(EXIT_SUCCESS);
1715 }
1716 }
1717
1718 void
1719 tag(const Arg *arg)
1720 {
1721 if (selmon->sel && arg->ui & TAGMASK) {
1722 selmon->sel->tags = arg->ui & TAGMASK;
1723 focus(NULL);
1724 arrange(selmon);
1725 }
1726 }
1727
1728 void
1729 tagmon(const Arg *arg)
1730 {
1731 if (!selmon->sel || !mons->next)
1732 return;
1733 sendmon(selmon->sel, dirtomon(arg->i));
1734 }
1735
1736 void
1737 tile(Monitor *m)
1738 {
1739 unsigned int i, n, h, mw, my, ty;
1740 Client *c;
1741
1742 for (n = 0, c = nexttiled(m->clients); c; c = nexttiled(c->next), n++);
1743 if (n == 0)
1744 return;
1745
1746 if (n > m->nmaster)
1747 mw = m->nmaster ? m->ww * m->mfact : 0;
1748 else
1749 mw = m->ww;
1750 for (i = 0, my = ty = 0, c = nexttiled(m->clients); c; c = nexttiled(c->next), i++) {
1751 if (n == 1)
1752 c->bw = 0;
1753 else
1754 c->bw = borderpx;
1755
1756 if (i < m->nmaster) {
1757 h = (m->wh - my) / (MIN(n, m->nmaster) - i);
1758 resize(c, m->wx, m->wy, mw - (2*c->bw), h - (2*c->bw), 0);
1759 if (my + HEIGHT(c) < m->wh)
1760 my += HEIGHT(c);
1761 } else {
1762 h = (m->wh - ty) / (n - i);
1763 resize(c, m->wx + mw, m->wy + ty, m->ww - mw - (2*c->bw), h - (2*c->bw), 0);
1764 if (ty + HEIGHT(c) < m->wh)
1765 ty += HEIGHT(c);
1766 }
1767 }
1768 }
1769
1770 void
1771 togglebar(const Arg *arg)
1772 {
1773 selmon->showbar = selmon->pertag->showbars[selmon->pertag->curtag] = !selmon->showbar;
1774 updatebarpos(selmon);
1775 XMoveResizeWindow(dpy, selmon->barwin, selmon->wx, selmon->by, selmon->ww, bh);
1776 arrange(selmon);
1777 }
1778
1779 void
1780 togglefloating(const Arg *arg)
1781 {
1782 if (!selmon->sel)
1783 return;
1784 if (selmon->sel->isfullscreen) /* no support for fullscreen windows */
1785 return;
1786 selmon->sel->isfloating = !selmon->sel->isfloating || selmon->sel->isfixed;
1787 if (selmon->sel->isfloating)
1788 resize(selmon->sel, selmon->sel->x, selmon->sel->y,
1789 selmon->sel->w, selmon->sel->h, 0);
1790 arrange(selmon);
1791 }
1792
1793 void
1794 toggletag(const Arg *arg)
1795 {
1796 unsigned int newtags;
1797
1798 if (!selmon->sel)
1799 return;
1800 newtags = selmon->sel->tags ^ (arg->ui & TAGMASK);
1801 if (newtags) {
1802 selmon->sel->tags = newtags;
1803 focus(NULL);
1804 arrange(selmon);
1805 }
1806 }
1807
1808 void
1809 toggleview(const Arg *arg)
1810 {
1811 unsigned int newtagset = selmon->tagset[selmon->seltags] ^ (arg->ui & TAGMASK);
1812 int i;
1813
1814 if (newtagset) {
1815 selmon->tagset[selmon->seltags] = newtagset;
1816
1817 if (newtagset == ~0) {
1818 selmon->pertag->prevtag = selmon->pertag->curtag;
1819 selmon->pertag->curtag = 0;
1820 }
1821
1822 /* test if the user did not select the same tag */
1823 if (!(newtagset & 1 << (selmon->pertag->curtag - 1))) {
1824 selmon->pertag->prevtag = selmon->pertag->curtag;
1825 for (i = 0; !(newtagset & 1 << i); i++) ;
1826 selmon->pertag->curtag = i + 1;
1827 }
1828
1829 /* apply settings for this view */
1830 selmon->nmaster = selmon->pertag->nmasters[selmon->pertag->curtag];
1831 selmon->mfact = selmon->pertag->mfacts[selmon->pertag->curtag];
1832 selmon->sellt = selmon->pertag->sellts[selmon->pertag->curtag];
1833 selmon->lt[selmon->sellt] = selmon->pertag->ltidxs[selmon->pertag->curtag][selmon->sellt];
1834 selmon->lt[selmon->sellt^1] = selmon->pertag->ltidxs[selmon->pertag->curtag][selmon->sellt^1];
1835
1836 if (selmon->showbar != selmon->pertag->showbars[selmon->pertag->curtag])
1837 togglebar(NULL);
1838
1839 focus(NULL);
1840 arrange(selmon);
1841 }
1842 }
1843
1844 void
1845 unfocus(Client *c, int setfocus)
1846 {
1847 if (!c)
1848 return;
1849 grabbuttons(c, 0);
1850 XSetWindowBorder(dpy, c->win, scheme[SchemeNorm][ColBorder].pixel);
1851 if (setfocus) {
1852 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
1853 XDeleteProperty(dpy, root, netatom[NetActiveWindow]);
1854 }
1855 }
1856
1857 void
1858 unmanage(Client *c, int destroyed)
1859 {
1860 Monitor *m = c->mon;
1861 XWindowChanges wc;
1862
1863 detach(c);
1864 detachstack(c);
1865 if (!destroyed) {
1866 wc.border_width = c->oldbw;
1867 XGrabServer(dpy); /* avoid race conditions */
1868 XSetErrorHandler(xerrordummy);
1869 XConfigureWindow(dpy, c->win, CWBorderWidth, &wc); /* restore border */
1870 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
1871 setclientstate(c, WithdrawnState);
1872 XSync(dpy, False);
1873 XSetErrorHandler(xerror);
1874 XUngrabServer(dpy);
1875 }
1876 free(c);
1877 focus(NULL);
1878 updateclientlist();
1879 arrange(m);
1880 }
1881
1882 void
1883 unmapnotify(XEvent *e)
1884 {
1885 Client *c;
1886 XUnmapEvent *ev = &e->xunmap;
1887
1888 if ((c = wintoclient(ev->window))) {
1889 if (ev->send_event)
1890 setclientstate(c, WithdrawnState);
1891 else
1892 unmanage(c, 0);
1893 }
1894 }
1895
1896 void
1897 updatebars(void)
1898 {
1899 Monitor *m;
1900 XSetWindowAttributes wa = {
1901 .override_redirect = True,
1902 .background_pixmap = ParentRelative,
1903 .event_mask = ButtonPressMask|ExposureMask
1904 };
1905 XClassHint ch = {"dwm", "dwm"};
1906 for (m = mons; m; m = m->next) {
1907 if (m->barwin)
1908 continue;
1909 m->barwin = XCreateWindow(dpy, root, m->wx, m->by, m->ww, bh, 0, DefaultDepth(dpy, screen),
1910 CopyFromParent, DefaultVisual(dpy, screen),
1911 CWOverrideRedirect|CWBackPixmap|CWEventMask, &wa);
1912 XDefineCursor(dpy, m->barwin, cursor[CurNormal]->cursor);
1913 XMapRaised(dpy, m->barwin);
1914 XSetClassHint(dpy, m->barwin, &ch);
1915 }
1916 }
1917
1918 void
1919 updatebarpos(Monitor *m)
1920 {
1921 m->wy = m->my;
1922 m->wh = m->mh;
1923 if (m->showbar) {
1924 m->wh -= bh;
1925 m->by = m->topbar ? m->wy : m->wy + m->wh;
1926 m->wy = m->topbar ? m->wy + bh : m->wy;
1927 } else
1928 m->by = -bh;
1929 }
1930
1931 void
1932 updateclientlist()
1933 {
1934 Client *c;
1935 Monitor *m;
1936
1937 XDeleteProperty(dpy, root, netatom[NetClientList]);
1938 for (m = mons; m; m = m->next)
1939 for (c = m->clients; c; c = c->next)
1940 XChangeProperty(dpy, root, netatom[NetClientList],
1941 XA_WINDOW, 32, PropModeAppend,
1942 (unsigned char *) &(c->win), 1);
1943 }
1944
1945 int
1946 updategeom(void)
1947 {
1948 int dirty = 0;
1949
1950 #ifdef XINERAMA
1951 if (XineramaIsActive(dpy)) {
1952 int i, j, n, nn;
1953 Client *c;
1954 Monitor *m;
1955 XineramaScreenInfo *info = XineramaQueryScreens(dpy, &nn);
1956 XineramaScreenInfo *unique = NULL;
1957
1958 for (n = 0, m = mons; m; m = m->next, n++);
1959 /* only consider unique geometries as separate screens */
1960 unique = ecalloc(nn, sizeof(XineramaScreenInfo));
1961 for (i = 0, j = 0; i < nn; i++)
1962 if (isuniquegeom(unique, j, &info[i]))
1963 memcpy(&unique[j++], &info[i], sizeof(XineramaScreenInfo));
1964 XFree(info);
1965 nn = j;
1966 if (n <= nn) { /* new monitors available */
1967 for (i = 0; i < (nn - n); i++) {
1968 for (m = mons; m && m->next; m = m->next);
1969 if (m)
1970 m->next = createmon();
1971 else
1972 mons = createmon();
1973 }
1974 for (i = 0, m = mons; i < nn && m; m = m->next, i++)
1975 if (i >= n
1976 || unique[i].x_org != m->mx || unique[i].y_org != m->my
1977 || unique[i].width != m->mw || unique[i].height != m->mh)
1978 {
1979 dirty = 1;
1980 m->num = i;
1981 m->mx = m->wx = unique[i].x_org;
1982 m->my = m->wy = unique[i].y_org;
1983 m->mw = m->ww = unique[i].width;
1984 m->mh = m->wh = unique[i].height;
1985 updatebarpos(m);
1986 }
1987 } else { /* less monitors available nn < n */
1988 for (i = nn; i < n; i++) {
1989 for (m = mons; m && m->next; m = m->next);
1990 while ((c = m->clients)) {
1991 dirty = 1;
1992 m->clients = c->next;
1993 detachstack(c);
1994 c->mon = mons;
1995 attach(c);
1996 attachstack(c);
1997 }
1998 if (m == selmon)
1999 selmon = mons;
2000 cleanupmon(m);
2001 }
2002 }
2003 free(unique);
2004 } else
2005 #endif /* XINERAMA */
2006 { /* default monitor setup */
2007 if (!mons)
2008 mons = createmon();
2009 if (mons->mw != sw || mons->mh != sh) {
2010 dirty = 1;
2011 mons->mw = mons->ww = sw;
2012 mons->mh = mons->wh = sh;
2013 updatebarpos(mons);
2014 }
2015 }
2016 if (dirty) {
2017 selmon = mons;
2018 selmon = wintomon(root);
2019 }
2020 return dirty;
2021 }
2022
2023 void
2024 updatenumlockmask(void)
2025 {
2026 unsigned int i, j;
2027 XModifierKeymap *modmap;
2028
2029 numlockmask = 0;
2030 modmap = XGetModifierMapping(dpy);
2031 for (i = 0; i < 8; i++)
2032 for (j = 0; j < modmap->max_keypermod; j++)
2033 if (modmap->modifiermap[i * modmap->max_keypermod + j]
2034 == XKeysymToKeycode(dpy, XK_Num_Lock))
2035 numlockmask = (1 << i);
2036 XFreeModifiermap(modmap);
2037 }
2038
2039 void
2040 updatesizehints(Client *c)
2041 {
2042 long msize;
2043 XSizeHints size;
2044
2045 if (!XGetWMNormalHints(dpy, c->win, &size, &msize))
2046 /* size is uninitialized, ensure that size.flags aren't used */
2047 size.flags = PSize;
2048 if (size.flags & PBaseSize) {
2049 c->basew = size.base_width;
2050 c->baseh = size.base_height;
2051 } else if (size.flags & PMinSize) {
2052 c->basew = size.min_width;
2053 c->baseh = size.min_height;
2054 } else
2055 c->basew = c->baseh = 0;
2056 if (size.flags & PResizeInc) {
2057 c->incw = size.width_inc;
2058 c->inch = size.height_inc;
2059 } else
2060 c->incw = c->inch = 0;
2061 if (size.flags & PMaxSize) {
2062 c->maxw = size.max_width;
2063 c->maxh = size.max_height;
2064 } else
2065 c->maxw = c->maxh = 0;
2066 if (size.flags & PMinSize) {
2067 c->minw = size.min_width;
2068 c->minh = size.min_height;
2069 } else if (size.flags & PBaseSize) {
2070 c->minw = size.base_width;
2071 c->minh = size.base_height;
2072 } else
2073 c->minw = c->minh = 0;
2074 if (size.flags & PAspect) {
2075 c->mina = (float)size.min_aspect.y / size.min_aspect.x;
2076 c->maxa = (float)size.max_aspect.x / size.max_aspect.y;
2077 } else
2078 c->maxa = c->mina = 0.0;
2079 c->isfixed = (c->maxw && c->maxh && c->maxw == c->minw && c->maxh == c->minh);
2080 }
2081
2082 void
2083 updatestatus(void)
2084 {
2085 if (!gettextprop(root, XA_WM_NAME, stext, sizeof(stext)))
2086 strcpy(stext, "dwm-"VERSION);
2087 drawbar(selmon);
2088 }
2089
2090 void
2091 updatetitle(Client *c)
2092 {
2093 if (!gettextprop(c->win, netatom[NetWMName], c->name, sizeof c->name))
2094 gettextprop(c->win, XA_WM_NAME, c->name, sizeof c->name);
2095 if (c->name[0] == '\0') /* hack to mark broken clients */
2096 strcpy(c->name, broken);
2097 }
2098
2099 void
2100 updatewindowtype(Client *c)
2101 {
2102 Atom state = getatomprop(c, netatom[NetWMState]);
2103 Atom wtype = getatomprop(c, netatom[NetWMWindowType]);
2104
2105 if (state == netatom[NetWMFullscreen])
2106 setfullscreen(c, 1);
2107 if (wtype == netatom[NetWMWindowTypeDialog])
2108 c->isfloating = 1;
2109 }
2110
2111 void
2112 updatewmhints(Client *c)
2113 {
2114 XWMHints *wmh;
2115
2116 if ((wmh = XGetWMHints(dpy, c->win))) {
2117 if (c == selmon->sel && wmh->flags & XUrgencyHint) {
2118 wmh->flags &= ~XUrgencyHint;
2119 XSetWMHints(dpy, c->win, wmh);
2120 } else
2121 c->isurgent = (wmh->flags & XUrgencyHint) ? 1 : 0;
2122 if (wmh->flags & InputHint)
2123 c->neverfocus = !wmh->input;
2124 else
2125 c->neverfocus = 0;
2126 XFree(wmh);
2127 }
2128 }
2129
2130 void
2131 view(const Arg *arg)
2132 {
2133 int i;
2134 unsigned int tmptag;
2135
2136 if ((arg->ui & TAGMASK) == selmon->tagset[selmon->seltags])
2137 return;
2138 selmon->seltags ^= 1; /* toggle sel tagset */
2139 if (arg->ui & TAGMASK) {
2140 selmon->tagset[selmon->seltags] = arg->ui & TAGMASK;
2141 selmon->pertag->prevtag = selmon->pertag->curtag;
2142
2143 if (arg->ui == ~0)
2144 selmon->pertag->curtag = 0;
2145 else {
2146 for (i = 0; !(arg->ui & 1 << i); i++) ;
2147 selmon->pertag->curtag = i + 1;
2148 }
2149 } else {
2150 tmptag = selmon->pertag->prevtag;
2151 selmon->pertag->prevtag = selmon->pertag->curtag;
2152 selmon->pertag->curtag = tmptag;
2153 }
2154
2155 selmon->nmaster = selmon->pertag->nmasters[selmon->pertag->curtag];
2156 selmon->mfact = selmon->pertag->mfacts[selmon->pertag->curtag];
2157 selmon->sellt = selmon->pertag->sellts[selmon->pertag->curtag];
2158 selmon->lt[selmon->sellt] = selmon->pertag->ltidxs[selmon->pertag->curtag][selmon->sellt];
2159 selmon->lt[selmon->sellt^1] = selmon->pertag->ltidxs[selmon->pertag->curtag][selmon->sellt^1];
2160
2161 if (selmon->showbar != selmon->pertag->showbars[selmon->pertag->curtag])
2162 togglebar(NULL);
2163
2164 focus(NULL);
2165 arrange(selmon);
2166 }
2167
2168 Client *
2169 wintoclient(Window w)
2170 {
2171 Client *c;
2172 Monitor *m;
2173
2174 for (m = mons; m; m = m->next)
2175 for (c = m->clients; c; c = c->next)
2176 if (c->win == w)
2177 return c;
2178 return NULL;
2179 }
2180
2181 Monitor *
2182 wintomon(Window w)
2183 {
2184 int x, y;
2185 Client *c;
2186 Monitor *m;
2187
2188 if (w == root && getrootptr(&x, &y))
2189 return recttomon(x, y, 1, 1);
2190 for (m = mons; m; m = m->next)
2191 if (w == m->barwin)
2192 return m;
2193 if ((c = wintoclient(w)))
2194 return c->mon;
2195 return selmon;
2196 }
2197
2198 /* There's no way to check accesses to destroyed windows, thus those cases are
2199 * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
2200 * default error handler, which may call exit. */
2201 int
2202 xerror(Display *dpy, XErrorEvent *ee)
2203 {
2204 if (ee->error_code == BadWindow
2205 || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
2206 || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
2207 || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
2208 || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
2209 || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
2210 || (ee->request_code == X_GrabButton && ee->error_code == BadAccess)
2211 || (ee->request_code == X_GrabKey && ee->error_code == BadAccess)
2212 || (ee->request_code == X_CopyArea && ee->error_code == BadDrawable))
2213 return 0;
2214 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
2215 ee->request_code, ee->error_code);
2216 return xerrorxlib(dpy, ee); /* may call exit */
2217 }
2218
2219 int
2220 xerrordummy(Display *dpy, XErrorEvent *ee)
2221 {
2222 return 0;
2223 }
2224
2225 /* Startup Error handler to check if another window manager
2226 * is already running. */
2227 int
2228 xerrorstart(Display *dpy, XErrorEvent *ee)
2229 {
2230 die("dwm: another window manager is already running");
2231 return -1;
2232 }
2233
2234 void
2235 zoom(const Arg *arg)
2236 {
2237 Client *c = selmon->sel;
2238
2239 if (!selmon->lt[selmon->sellt]->arrange
2240 || (selmon->sel && selmon->sel->isfloating))
2241 return;
2242 if (c == nexttiled(selmon->clients))
2243 if (!c || !(c = nexttiled(c->next)))
2244 return;
2245 pop(c);
2246 }
2247
2248 int
2249 main(int argc, char *argv[])
2250 {
2251 if (argc == 2 && !strcmp("-v", argv[1]))
2252 die("dwm-"VERSION);
2253 else if (argc != 1)
2254 die("usage: dwm [-v]");
2255 if (!setlocale(LC_CTYPE, "") || !XSupportsLocale())
2256 fputs("warning: no locale support\n", stderr);
2257 if (!(dpy = XOpenDisplay(NULL)))
2258 die("dwm: cannot open display");
2259 checkotherwm();
2260 setup();
2261 #ifdef __OpenBSD__
2262 if (pledge("stdio rpath proc exec", NULL) == -1)
2263 die("pledge");
2264 #endif /* __OpenBSD__ */
2265 scan();
2266 run();
2267 cleanup();
2268 XCloseDisplay(dpy);
2269 return EXIT_SUCCESS;
2270 }