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/XF86keysym.h>
36#include <X11/Xatom.h>
37#include <X11/Xlib.h>
38#include <X11/Xproto.h>
39#include <X11/Xutil.h>
40#ifdef XINERAMA
41#include <X11/extensions/Xinerama.h>
42#endif /* XINERAMA */
43#include <X11/Xft/Xft.h>
44
45#include "drw.h"
46#include "util.h"
47
48/* macros */
49#define BUTTONMASK (ButtonPressMask|ButtonReleaseMask)
50#define CLEANMASK(mask) (mask & ~(numlockmask|LockMask) & (ShiftMask|ControlMask|Mod1Mask|Mod2Mask|Mod3Mask|Mod4Mask|Mod5Mask))
51#define INTERSECT(x,y,w,h,m) (MAX(0, MIN((x)+(w),(m)->wx+(m)->ww) - MAX((x),(m)->wx)) \
52 * MAX(0, MIN((y)+(h),(m)->wy+(m)->wh) - MAX((y),(m)->wy)))
53#define ISVISIBLE(C) ((C)->tags & (C)->mon->tagset[(C)->mon->seltags])
54#define LENGTH(X) (sizeof X / sizeof X[0])
55#define MOUSEMASK (BUTTONMASK|PointerMotionMask)
56#define WIDTH(X) ((X)->w + 2 * (X)->bw)
57#define HEIGHT(X) ((X)->h + 2 * (X)->bw)
58#define TAGMASK ((1 << LENGTH(tags)) - 1)
59#define TEXTW(X) (drw_fontset_getwidth(drw, (X)) + lrpad)
60#define MAXWH(M) ((M)->wh - ((M)->wh * 0.1))
61#define MAXWW(M) ((M)->ww - ((M)->ww * 0.3))
62
63/* enums */
64enum { CurNormal, CurResize, CurMove, CurLast }; /* cursor */
65enum { SchemeNorm, SchemeSel }; /* color schemes */
66enum { NetSupported, NetWMName, NetWMState, NetWMCheck,
67 NetWMFullscreen, NetActiveWindow, NetWMWindowType,
68 NetWMWindowTypeDialog, NetClientList, NetLast }; /* EWMH atoms */
69enum { WMProtocols, WMDelete, WMState, WMTakeFocus, WMLast }; /* default atoms */
70enum { ClkTagBar, ClkLtSymbol, ClkStatusText, ClkWinTitle,
71 ClkClientWin, ClkRootWin, ClkLast }; /* clicks */
72
73typedef union {
74 int i;
75 unsigned int ui;
76 float f;
77 const void *v;
78} Arg;
79
80typedef 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
88typedef struct Monitor Monitor;
89typedef struct Client Client;
90struct 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, hintsvalid;
96 int bw, oldbw;
97 unsigned int tags;
98 int isfixed, isfloating, isurgent, neverfocus, oldstate, isfullscreen;
99 Client *next;
100 Client *snext;
101 Monitor *mon;
102 Window win;
103};
104
105typedef struct {
106 unsigned int mod;
107 KeySym keysym;
108 void (*func)(const Arg *);
109 const Arg arg;
110} Key;
111
112typedef struct {
113 const char *symbol;
114 void (*arrange)(Monitor *);
115} Layout;
116
117struct Monitor {
118 char ltsymbol[16];
119 float mfact;
120 int nmaster;
121 int num;
122 int by; /* bar geometry */
123 int mx, my, mw, mh; /* screen size */
124 int wx, wy, ww, wh; /* window area */
125 unsigned int seltags;
126 unsigned int sellt;
127 unsigned int tagset[2];
128 int showbar;
129 int topbar;
130 Client *clients;
131 Client *sel;
132 Client *stack;
133 Monitor *next;
134 Window barwin;
135 const Layout *lt[2];
136};
137
138typedef struct {
139 const char *class;
140 const char *instance;
141 const char *title;
142 unsigned int tags;
143 int isfloating;
144 int monitor;
145} Rule;
146
147/* function declarations */
148static void applyrules(Client *c);
149static int applysizehints(Client *c, int *x, int *y, int *w, int *h, int interact);
150static void arrange(Monitor *m);
151static void arrangemon(Monitor *m);
152static void attach(Client *c);
153static void attachstack(Client *c);
154static void buttonpress(XEvent *e);
155static void checkotherwm(void);
156static void cleanup(void);
157static void cleanupmon(Monitor *mon);
158static void clientmessage(XEvent *e);
159static void configure(Client *c);
160static void configurenotify(XEvent *e);
161static void configurerequest(XEvent *e);
162static Monitor *createmon(void);
163static void destroynotify(XEvent *e);
164static void detach(Client *c);
165static void detachstack(Client *c);
166static Monitor *dirtomon(int dir);
167static void drawbar(Monitor *m);
168static void drawbars(void);
169static void enternotify(XEvent *e);
170static void expose(XEvent *e);
171static void focus(Client *c);
172static void focusin(XEvent *e);
173static void focusmon(const Arg *arg);
174static void focusstack(const Arg *arg);
175static Atom getatomprop(Client *c, Atom prop);
176static int getrootptr(int *x, int *y);
177static long getstate(Window w);
178static int gettextprop(Window w, Atom atom, char *text, unsigned int size);
179static void grabbuttons(Client *c, int focused);
180static void grabkeys(void);
181static void incnmaster(const Arg *arg);
182static void keypress(XEvent *e);
183static void killclient(const Arg *arg);
184static void manage(Window w, XWindowAttributes *wa);
185static void mappingnotify(XEvent *e);
186static void maprequest(XEvent *e);
187static void monocle(Monitor *m);
188static void motionnotify(XEvent *e);
189static void movemouse(const Arg *arg);
190static void movestack(const Arg *arg);
191static Client *nexttiled(Client *c);
192static void pop(Client *c);
193static void propertynotify(XEvent *e);
194static void quit(const Arg *arg);
195static Monitor *recttomon(int x, int y, int w, int h);
196static void resize(Client *c, int x, int y, int w, int h, int interact);
197static void resizeclient(Client *c, int x, int y, int w, int h);
198static void resizemouse(const Arg *arg);
199static void restack(Monitor *m);
200static void run(void);
201static void scan(void);
202static int sendevent(Client *c, Atom proto);
203static void sendmon(Client *c, Monitor *m);
204static void setclientstate(Client *c, long state);
205static void setfocus(Client *c);
206static void setfullscreen(Client *c, int fullscreen);
207static void setlayout(const Arg *arg);
208static void setmfact(const Arg *arg);
209static void setup(void);
210static void seturgent(Client *c, int urg);
211static void showhide(Client *c);
212static void sigchld(int unused);
213static void spawn(const Arg *arg);
214static void tag(const Arg *arg);
215static void tagmon(const Arg *arg);
216static void tile(Monitor *m);
217static void togglebar(const Arg *arg);
218static void togglefloating(const Arg *arg);
219static void togglefullscrn(const Arg *arg);
220static void toggletag(const Arg *arg);
221static void toggleview(const Arg *arg);
222static void unfocus(Client *c, int setfocus);
223static void unmanage(Client *c, int destroyed);
224static void unmapnotify(XEvent *e);
225static void updatebarpos(Monitor *m);
226static void updatebars(void);
227static void updateclientlist(void);
228static int updategeom(void);
229static void updatenumlockmask(void);
230static void updatesizehints(Client *c);
231static void updatestatus(void);
232static void updatetitle(Client *c);
233static void updatewindowtype(Client *c);
234static void updatewmhints(Client *c);
235static void view(const Arg *arg);
236static Client *wintoclient(Window w);
237static Monitor *wintomon(Window w);
238static int xerror(Display *dpy, XErrorEvent *ee);
239static int xerrordummy(Display *dpy, XErrorEvent *ee);
240static int xerrorstart(Display *dpy, XErrorEvent *ee);
241static void zoom(const Arg *arg);
242
243/* variables */
244static const char broken[] = "broken";
245static char stext[256];
246static int screen;
247static int sw, sh; /* X display screen geometry width, height */
248static int bh; /* bar height */
249static int lrpad; /* sum of left and right padding for text */
250static int (*xerrorxlib)(Display *, XErrorEvent *);
251static unsigned int numlockmask = 0;
252static 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};
268static Atom wmatom[WMLast], netatom[NetLast];
269static int running = 1;
270static Cur *cursor[CurLast];
271static Clr **scheme;
272static Display *dpy;
273static Drw *drw;
274static Monitor *mons, *selmon;
275static Window root, wmcheckwin;
276
277/* configuration, allows nested code to access above variables */
278#include "config.h"
279
280/* compile-time check if all tags fit into an unsigned int bit array. */
281struct NumTags { char limitexceeded[LENGTH(tags) > 31 ? -1 : 1]; };
282
283/* function implementations */
284void
285applyrules(Client *c)
286{
287 const char *class, *instance;
288 unsigned int i;
289 const Rule *r;
290 Monitor *m;
291 XClassHint ch = { NULL, NULL };
292
293 /* rule matching */
294 c->isfloating = 0;
295 c->tags = 0;
296 XGetClassHint(dpy, c->win, &ch);
297 class = ch.res_class ? ch.res_class : broken;
298 instance = ch.res_name ? ch.res_name : broken;
299
300 for (i = 0; i < LENGTH(rules); i++) {
301 r = &rules[i];
302 if ((!r->title || strstr(c->name, r->title))
303 && (!r->class || strstr(class, r->class))
304 && (!r->instance || strstr(instance, r->instance)))
305 {
306 c->isfloating = r->isfloating;
307 c->tags |= r->tags;
308 for (m = mons; m && m->num != r->monitor; m = m->next);
309 if (m)
310 c->mon = m;
311 }
312 }
313 if (ch.res_class)
314 XFree(ch.res_class);
315 if (ch.res_name)
316 XFree(ch.res_name);
317 c->tags = c->tags & TAGMASK ? c->tags & TAGMASK : c->mon->tagset[c->mon->seltags];
318}
319
320int
321applysizehints(Client *c, int *x, int *y, int *w, int *h, int interact)
322{
323 int baseismin;
324 Monitor *m = c->mon;
325
326 /* set minimum possible */
327 *w = MAX(1, *w);
328 *h = MAX(1, *h);
329 if (interact) {
330 if (*x > sw)
331 *x = sw - WIDTH(c);
332 if (*y > sh)
333 *y = sh - HEIGHT(c);
334 if (*x + *w + 2 * c->bw < 0)
335 *x = 0;
336 if (*y + *h + 2 * c->bw < 0)
337 *y = 0;
338 } else {
339 if (*x >= m->wx + m->ww)
340 *x = m->wx + m->ww - WIDTH(c);
341 if (*y >= m->wy + m->wh)
342 *y = m->wy + m->wh - HEIGHT(c);
343 if (*x + *w + 2 * c->bw <= m->wx)
344 *x = m->wx;
345 if (*y + *h + 2 * c->bw <= m->wy)
346 *y = m->wy;
347 }
348 if (*h < bh)
349 *h = bh;
350 if (*w < bh)
351 *w = bh;
352 if (resizehints || c->isfloating || !c->mon->lt[c->mon->sellt]->arrange) {
353 if (!c->hintsvalid)
354 updatesizehints(c);
355 /* see last two sentences in ICCCM 4.1.2.3 */
356 baseismin = c->basew == c->minw && c->baseh == c->minh;
357 if (!baseismin) { /* temporarily remove base dimensions */
358 *w -= c->basew;
359 *h -= c->baseh;
360 }
361 /* adjust for aspect limits */
362 if (c->mina > 0 && c->maxa > 0) {
363 if (c->maxa < (float)*w / *h)
364 *w = *h * c->maxa + 0.5;
365 else if (c->mina < (float)*h / *w)
366 *h = *w * c->mina + 0.5;
367 }
368 if (baseismin) { /* increment calculation requires this */
369 *w -= c->basew;
370 *h -= c->baseh;
371 }
372 /* adjust for increment value */
373 if (c->incw)
374 *w -= *w % c->incw;
375 if (c->inch)
376 *h -= *h % c->inch;
377 /* restore base dimensions */
378 *w = MAX(*w + c->basew, c->minw);
379 *h = MAX(*h + c->baseh, c->minh);
380 if (c->maxw)
381 *w = MIN(*w, c->maxw);
382 if (c->maxh)
383 *h = MIN(*h, c->maxh);
384 }
385 return *x != c->x || *y != c->y || *w != c->w || *h != c->h;
386}
387
388void
389arrange(Monitor *m)
390{
391 if (m)
392 showhide(m->stack);
393 else for (m = mons; m; m = m->next)
394 showhide(m->stack);
395 if (m) {
396 arrangemon(m);
397 restack(m);
398 } else for (m = mons; m; m = m->next)
399 arrangemon(m);
400}
401
402void
403arrangemon(Monitor *m)
404{
405 strncpy(m->ltsymbol, m->lt[m->sellt]->symbol, sizeof m->ltsymbol);
406 if (m->lt[m->sellt]->arrange)
407 m->lt[m->sellt]->arrange(m);
408}
409
410void
411attach(Client *c)
412{
413 c->next = c->mon->clients;
414 c->mon->clients = c;
415}
416
417void
418attachstack(Client *c)
419{
420 c->snext = c->mon->stack;
421 c->mon->stack = c;
422}
423
424void
425buttonpress(XEvent *e)
426{
427 unsigned int i, x, click;
428 Arg arg = {0};
429 Client *c;
430 Monitor *m;
431 XButtonPressedEvent *ev = &e->xbutton;
432
433 click = ClkRootWin;
434 /* focus monitor if necessary */
435 if ((m = wintomon(ev->window)) && m != selmon) {
436 unfocus(selmon->sel, 1);
437 selmon = m;
438 focus(NULL);
439 }
440 if (ev->window == selmon->barwin) {
441 i = x = 0;
442 do
443 x += TEXTW(tags[i]);
444 while (ev->x >= x && ++i < LENGTH(tags));
445 if (i < LENGTH(tags)) {
446 click = ClkTagBar;
447 arg.ui = 1 << i;
448 } else if (ev->x < x + TEXTW(selmon->ltsymbol))
449 click = ClkLtSymbol;
450 else if (ev->x > selmon->ww - (int)TEXTW(stext))
451 click = ClkStatusText;
452 else
453 click = ClkWinTitle;
454 } else if ((c = wintoclient(ev->window))) {
455 focus(c);
456 restack(selmon);
457 XAllowEvents(dpy, ReplayPointer, CurrentTime);
458 click = ClkClientWin;
459 }
460 for (i = 0; i < LENGTH(buttons); i++)
461 if (click == buttons[i].click && buttons[i].func && buttons[i].button == ev->button
462 && CLEANMASK(buttons[i].mask) == CLEANMASK(ev->state))
463 buttons[i].func(click == ClkTagBar && buttons[i].arg.i == 0 ? &arg : &buttons[i].arg);
464}
465
466void
467checkotherwm(void)
468{
469 xerrorxlib = XSetErrorHandler(xerrorstart);
470 /* this causes an error if some other window manager is running */
471 XSelectInput(dpy, DefaultRootWindow(dpy), SubstructureRedirectMask);
472 XSync(dpy, False);
473 XSetErrorHandler(xerror);
474 XSync(dpy, False);
475}
476
477void
478cleanup(void)
479{
480 Arg a = {.ui = ~0};
481 Layout foo = { "", NULL };
482 Monitor *m;
483 size_t i;
484
485 view(&a);
486 selmon->lt[selmon->sellt] = &foo;
487 for (m = mons; m; m = m->next)
488 while (m->stack)
489 unmanage(m->stack, 0);
490 XUngrabKey(dpy, AnyKey, AnyModifier, root);
491 while (mons)
492 cleanupmon(mons);
493 for (i = 0; i < CurLast; i++)
494 drw_cur_free(drw, cursor[i]);
495 for (i = 0; i < LENGTH(colors); i++)
496 free(scheme[i]);
497 free(scheme);
498 XDestroyWindow(dpy, wmcheckwin);
499 drw_free(drw);
500 XSync(dpy, False);
501 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
502 XDeleteProperty(dpy, root, netatom[NetActiveWindow]);
503}
504
505void
506cleanupmon(Monitor *mon)
507{
508 Monitor *m;
509
510 if (mon == mons)
511 mons = mons->next;
512 else {
513 for (m = mons; m && m->next != mon; m = m->next);
514 m->next = mon->next;
515 }
516 XUnmapWindow(dpy, mon->barwin);
517 XDestroyWindow(dpy, mon->barwin);
518 free(mon);
519}
520
521void
522clientmessage(XEvent *e)
523{
524 XClientMessageEvent *cme = &e->xclient;
525 Client *c = wintoclient(cme->window);
526
527 if (!c)
528 return;
529 if (cme->message_type == netatom[NetWMState]) {
530 if (cme->data.l[1] == netatom[NetWMFullscreen]
531 || cme->data.l[2] == netatom[NetWMFullscreen])
532 setfullscreen(c, (cme->data.l[0] == 1 /* _NET_WM_STATE_ADD */
533 || (cme->data.l[0] == 2 /* _NET_WM_STATE_TOGGLE */ && !c->isfullscreen)));
534 } else if (cme->message_type == netatom[NetActiveWindow]) {
535 if (c != selmon->sel && !c->isurgent)
536 seturgent(c, 1);
537 }
538}
539
540void
541configure(Client *c)
542{
543 XConfigureEvent ce;
544
545 ce.type = ConfigureNotify;
546 ce.display = dpy;
547 ce.event = c->win;
548 ce.window = c->win;
549 ce.x = c->x;
550 ce.y = c->y;
551 ce.width = c->w;
552 ce.height = c->h;
553 ce.border_width = c->bw;
554 ce.above = None;
555 ce.override_redirect = False;
556 XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&ce);
557}
558
559void
560configurenotify(XEvent *e)
561{
562 Monitor *m;
563 Client *c;
564 XConfigureEvent *ev = &e->xconfigure;
565 int dirty;
566
567 /* TODO: updategeom handling sucks, needs to be simplified */
568 if (ev->window == root) {
569 dirty = (sw != ev->width || sh != ev->height);
570 sw = ev->width;
571 sh = ev->height;
572 if (updategeom() || dirty) {
573 drw_resize(drw, sw, bh);
574 updatebars();
575 for (m = mons; m; m = m->next) {
576 for (c = m->clients; c; c = c->next)
577 if (c->isfullscreen)
578 resizeclient(c, m->mx, m->my, m->mw, m->mh);
579 XMoveResizeWindow(dpy, m->barwin, m->wx, m->by, m->ww, bh);
580 }
581 focus(NULL);
582 arrange(NULL);
583 }
584 }
585}
586
587void
588configurerequest(XEvent *e)
589{
590 Client *c;
591 Monitor *m;
592 XConfigureRequestEvent *ev = &e->xconfigurerequest;
593 XWindowChanges wc;
594
595 if ((c = wintoclient(ev->window))) {
596 if (ev->value_mask & CWBorderWidth)
597 c->bw = ev->border_width;
598 else if (c->isfloating || !selmon->lt[selmon->sellt]->arrange) {
599 m = c->mon;
600 if (ev->value_mask & CWX) {
601 c->oldx = c->x;
602 c->x = m->mx + ev->x;
603 }
604 if (ev->value_mask & CWY) {
605 c->oldy = c->y;
606 c->y = m->my + ev->y;
607 }
608 if (ev->value_mask & CWWidth) {
609 c->oldw = c->w;
610 c->w = ev->width;
611 }
612 if (ev->value_mask & CWHeight) {
613 c->oldh = c->h;
614 c->h = ev->height;
615 }
616 if ((c->x + c->w) > m->mx + m->mw && c->isfloating)
617 c->x = m->mx + (m->mw / 2 - WIDTH(c) / 2); /* center in x direction */
618 if ((c->y + c->h) > m->my + m->mh && c->isfloating)
619 c->y = m->my + (m->mh / 2 - HEIGHT(c) / 2); /* center in y direction */
620 if ((ev->value_mask & (CWX|CWY)) && !(ev->value_mask & (CWWidth|CWHeight)))
621 configure(c);
622 if (ISVISIBLE(c))
623 XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
624 } else
625 configure(c);
626 } else {
627 wc.x = ev->x;
628 wc.y = ev->y;
629 wc.width = ev->width;
630 wc.height = ev->height;
631 wc.border_width = ev->border_width;
632 wc.sibling = ev->above;
633 wc.stack_mode = ev->detail;
634 XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
635 }
636 XSync(dpy, False);
637}
638
639Monitor *
640createmon(void)
641{
642 Monitor *m;
643
644 m = ecalloc(1, sizeof(Monitor));
645 m->tagset[0] = m->tagset[1] = 1;
646 m->mfact = mfact;
647 m->nmaster = nmaster;
648 m->showbar = showbar;
649 m->topbar = topbar;
650 m->lt[0] = &layouts[0];
651 m->lt[1] = &layouts[1 % LENGTH(layouts)];
652 strncpy(m->ltsymbol, layouts[0].symbol, sizeof m->ltsymbol);
653 return m;
654}
655
656void
657destroynotify(XEvent *e)
658{
659 Client *c;
660 XDestroyWindowEvent *ev = &e->xdestroywindow;
661
662 if ((c = wintoclient(ev->window)))
663 unmanage(c, 1);
664}
665
666void
667detach(Client *c)
668{
669 Client **tc;
670
671 for (tc = &c->mon->clients; *tc && *tc != c; tc = &(*tc)->next);
672 *tc = c->next;
673}
674
675void
676detachstack(Client *c)
677{
678 Client **tc, *t;
679
680 for (tc = &c->mon->stack; *tc && *tc != c; tc = &(*tc)->snext);
681 *tc = c->snext;
682
683 if (c == c->mon->sel) {
684 for (t = c->mon->stack; t && !ISVISIBLE(t); t = t->snext);
685 c->mon->sel = t;
686 }
687}
688
689Monitor *
690dirtomon(int dir)
691{
692 Monitor *m = NULL;
693
694 if (dir > 0) {
695 if (!(m = selmon->next))
696 m = mons;
697 } else if (selmon == mons)
698 for (m = mons; m->next; m = m->next);
699 else
700 for (m = mons; m->next != selmon; m = m->next);
701 return m;
702}
703
704void
705drawbar(Monitor *m)
706{
707 int x, w, tw = 0;
708 int boxs = drw->fonts->h / 9;
709 int boxw = drw->fonts->h / 6 + 2;
710 unsigned int i, occ = 0, urg = 0;
711 Client *c;
712
713 if (!m->showbar)
714 return;
715
716 /* draw status first so it can be overdrawn by tags later */
717 if (m == selmon) { /* status is only drawn on selected monitor */
718 drw_setscheme(drw, scheme[SchemeNorm]);
719 tw = TEXTW(stext) - lrpad / 2; /* no right padding so status text hugs the corner */
720 drw_text(drw, m->ww - tw, 0, tw, bh, lrpad / 2 - 2, stext, 0);
721 }
722
723 for (c = m->clients; c; c = c->next) {
724 occ |= c->tags;
725 if (c->isurgent)
726 urg |= c->tags;
727 }
728 x = 0;
729 for (i = 0; i < LENGTH(tags); i++) {
730 w = TEXTW(tags[i]);
731 drw_setscheme(drw, scheme[m->tagset[m->seltags] & 1 << i ? SchemeSel : SchemeNorm]);
732 drw_text(drw, x, 0, w, bh, lrpad / 2, tags[i], urg & 1 << i);
733 if (occ & 1 << i)
734 drw_rect(drw, x + boxs, boxs, boxw, boxw,
735 m == selmon && selmon->sel && selmon->sel->tags & 1 << i,
736 urg & 1 << i);
737 x += w;
738 }
739 w = TEXTW(m->ltsymbol);
740 drw_setscheme(drw, scheme[SchemeNorm]);
741 x = drw_text(drw, x, 0, w, bh, lrpad / 2, m->ltsymbol, 0);
742
743 if ((w = m->ww - tw - x) > bh) {
744 if (m->sel) {
745 drw_setscheme(drw, scheme[m == selmon ? SchemeSel : SchemeNorm]);
746 drw_text(drw, x, 0, w, bh, lrpad / 2, m->sel->name, 0);
747 if (m->sel->isfloating)
748 drw_rect(drw, x + boxs, boxs, boxw, boxw, m->sel->isfixed, 0);
749 } else {
750 drw_setscheme(drw, scheme[SchemeNorm]);
751 drw_rect(drw, x, 0, w, bh, 1, 1);
752 }
753 }
754 drw_map(drw, m->barwin, 0, 0, m->ww, bh);
755}
756
757void
758drawbars(void)
759{
760 Monitor *m;
761
762 for (m = mons; m; m = m->next)
763 drawbar(m);
764}
765
766void
767enternotify(XEvent *e)
768{
769 Client *c;
770 Monitor *m;
771 XCrossingEvent *ev = &e->xcrossing;
772
773 if ((ev->mode != NotifyNormal || ev->detail == NotifyInferior) && ev->window != root)
774 return;
775 c = wintoclient(ev->window);
776 m = c ? c->mon : wintomon(ev->window);
777 if (m != selmon) {
778 unfocus(selmon->sel, 1);
779 selmon = m;
780 } else if (!c || c == selmon->sel)
781 return;
782 focus(c);
783}
784
785void
786expose(XEvent *e)
787{
788 Monitor *m;
789 XExposeEvent *ev = &e->xexpose;
790
791 if (ev->count == 0 && (m = wintomon(ev->window)))
792 drawbar(m);
793}
794
795void
796focus(Client *c)
797{
798 if (!c || !ISVISIBLE(c))
799 for (c = selmon->stack; c && !ISVISIBLE(c); c = c->snext);
800 if (selmon->sel && selmon->sel != c)
801 unfocus(selmon->sel, 0);
802 if (c) {
803 if (c->mon != selmon)
804 selmon = c->mon;
805 if (c->isurgent)
806 seturgent(c, 0);
807 detachstack(c);
808 attachstack(c);
809 grabbuttons(c, 1);
810 XSetWindowBorder(dpy, c->win, scheme[SchemeSel][ColBorder].pixel);
811 setfocus(c);
812 } else {
813 XSetInputFocus(dpy, selmon->barwin, RevertToPointerRoot, CurrentTime);
814 XDeleteProperty(dpy, root, netatom[NetActiveWindow]);
815 }
816 selmon->sel = c;
817 drawbars();
818}
819
820/* there are some broken focus acquiring clients needing extra handling */
821void
822focusin(XEvent *e)
823{
824 XFocusChangeEvent *ev = &e->xfocus;
825
826 if (selmon->sel && ev->window != selmon->sel->win)
827 setfocus(selmon->sel);
828}
829
830void
831focusmon(const Arg *arg)
832{
833 Monitor *m;
834
835 if (!mons->next)
836 return;
837 if ((m = dirtomon(arg->i)) == selmon)
838 return;
839 unfocus(selmon->sel, 0);
840 selmon = m;
841 focus(NULL);
842}
843
844void
845focusstack(const Arg *arg)
846{
847 Client *c = NULL, *i;
848
849 if (!selmon->sel || (selmon->sel->isfullscreen && lockfullscreen))
850 return;
851 if (arg->i > 0) {
852 for (c = selmon->sel->next; c && !ISVISIBLE(c); c = c->next);
853 if (!c)
854 for (c = selmon->clients; c && !ISVISIBLE(c); c = c->next);
855 } else {
856 for (i = selmon->clients; i != selmon->sel; i = i->next)
857 if (ISVISIBLE(i))
858 c = i;
859 if (!c)
860 for (; i; i = i->next)
861 if (ISVISIBLE(i))
862 c = i;
863 }
864 if (c) {
865 focus(c);
866 restack(selmon);
867 }
868}
869
870Atom
871getatomprop(Client *c, Atom prop)
872{
873 int di;
874 unsigned long dl;
875 unsigned char *p = NULL;
876 Atom da, atom = None;
877
878 if (XGetWindowProperty(dpy, c->win, prop, 0L, sizeof atom, False, XA_ATOM,
879 &da, &di, &dl, &dl, &p) == Success && p) {
880 atom = *(Atom *)p;
881 XFree(p);
882 }
883 return atom;
884}
885
886int
887getrootptr(int *x, int *y)
888{
889 int di;
890 unsigned int dui;
891 Window dummy;
892
893 return XQueryPointer(dpy, root, &dummy, &dummy, x, y, &di, &di, &dui);
894}
895
896long
897getstate(Window w)
898{
899 int format;
900 long result = -1;
901 unsigned char *p = NULL;
902 unsigned long n, extra;
903 Atom real;
904
905 if (XGetWindowProperty(dpy, w, wmatom[WMState], 0L, 2L, False, wmatom[WMState],
906 &real, &format, &n, &extra, (unsigned char **)&p) != Success)
907 return -1;
908 if (n != 0)
909 result = *p;
910 XFree(p);
911 return result;
912}
913
914int
915gettextprop(Window w, Atom atom, char *text, unsigned int size)
916{
917 char **list = NULL;
918 int n;
919 XTextProperty name;
920
921 if (!text || size == 0)
922 return 0;
923 text[0] = '\0';
924 if (!XGetTextProperty(dpy, w, &name, atom) || !name.nitems)
925 return 0;
926 if (name.encoding == XA_STRING) {
927 strncpy(text, (char *)name.value, size - 1);
928 } else if (XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success && n > 0 && *list) {
929 strncpy(text, *list, size - 1);
930 XFreeStringList(list);
931 }
932 text[size - 1] = '\0';
933 XFree(name.value);
934 return 1;
935}
936
937void
938grabbuttons(Client *c, int focused)
939{
940 updatenumlockmask();
941 {
942 unsigned int i, j;
943 unsigned int modifiers[] = { 0, LockMask, numlockmask, numlockmask|LockMask };
944 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
945 if (!focused)
946 XGrabButton(dpy, AnyButton, AnyModifier, c->win, False,
947 BUTTONMASK, GrabModeSync, GrabModeSync, None, None);
948 for (i = 0; i < LENGTH(buttons); i++)
949 if (buttons[i].click == ClkClientWin)
950 for (j = 0; j < LENGTH(modifiers); j++)
951 XGrabButton(dpy, buttons[i].button,
952 buttons[i].mask | modifiers[j],
953 c->win, False, BUTTONMASK,
954 GrabModeAsync, GrabModeSync, None, None);
955 }
956}
957
958void
959grabkeys(void)
960{
961 updatenumlockmask();
962 {
963 unsigned int i, j;
964 unsigned int modifiers[] = { 0, LockMask, numlockmask, numlockmask|LockMask };
965 KeyCode code;
966
967 XUngrabKey(dpy, AnyKey, AnyModifier, root);
968 for (i = 0; i < LENGTH(keys); i++)
969 if ((code = XKeysymToKeycode(dpy, keys[i].keysym)))
970 for (j = 0; j < LENGTH(modifiers); j++)
971 XGrabKey(dpy, code, keys[i].mod | modifiers[j], root,
972 True, GrabModeAsync, GrabModeAsync);
973 }
974}
975
976void
977incnmaster(const Arg *arg)
978{
979 int n, nmaster;
980 Client *c;
981
982 if ((c = selmon->sel) && c->isfullscreen)
983 setfullscreen(c, False); /* focus is lost without this */
984
985 n = 0;
986 for (c = selmon->clients; c; c = c->next)
987 if (ISVISIBLE(c)) n++;
988
989 nmaster = MAX(selmon->nmaster + arg->i, 0);
990 if (nmaster > n)
991 nmaster = n;
992
993 selmon->nmaster = nmaster;
994 arrange(selmon);
995}
996
997#ifdef XINERAMA
998static int
999isuniquegeom(XineramaScreenInfo *unique, size_t n, XineramaScreenInfo *info)
1000{
1001 while (n--)
1002 if (unique[n].x_org == info->x_org && unique[n].y_org == info->y_org
1003 && unique[n].width == info->width && unique[n].height == info->height)
1004 return 0;
1005 return 1;
1006}
1007#endif /* XINERAMA */
1008
1009void
1010keypress(XEvent *e)
1011{
1012 unsigned int i;
1013 KeySym keysym;
1014 XKeyEvent *ev;
1015
1016 ev = &e->xkey;
1017 keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
1018 for (i = 0; i < LENGTH(keys); i++)
1019 if (keysym == keys[i].keysym
1020 && CLEANMASK(keys[i].mod) == CLEANMASK(ev->state)
1021 && keys[i].func)
1022 keys[i].func(&(keys[i].arg));
1023}
1024
1025void
1026killclient(const Arg *arg)
1027{
1028 if (!selmon->sel)
1029 return;
1030 if (!sendevent(selmon->sel, wmatom[WMDelete])) {
1031 XGrabServer(dpy);
1032 XSetErrorHandler(xerrordummy);
1033 XSetCloseDownMode(dpy, DestroyAll);
1034 XKillClient(dpy, selmon->sel->win);
1035 XSync(dpy, False);
1036 XSetErrorHandler(xerror);
1037 XUngrabServer(dpy);
1038 }
1039}
1040
1041void
1042manage(Window w, XWindowAttributes *wa)
1043{
1044 Client *sc, *c, *t = NULL;
1045 Window trans = None;
1046 XWindowChanges wc;
1047 Atom wtype;
1048
1049 c = ecalloc(1, sizeof(Client));
1050 c->win = w;
1051
1052 wtype = getatomprop(c, netatom[NetWMWindowType]);
1053 if ((sc = selmon->sel) && sc->isfullscreen)
1054 setfullscreen(sc, False);
1055
1056 /* geometry */
1057 c->x = c->oldx = wa->x;
1058 c->y = c->oldy = wa->y;
1059 if (wtype == netatom[NetWMWindowTypeDialog]) {
1060 c->w = c->oldw = MIN(wa->width, MAXWW(selmon));
1061 c->h = c->oldh = MIN(wa->height, MAXWH(selmon));
1062 } else {
1063 c->w = c->oldw = wa->width;
1064 c->h = c->oldh = wa->height;
1065 }
1066 c->oldbw = wa->border_width;
1067
1068 updatetitle(c);
1069 if (XGetTransientForHint(dpy, w, &trans) && (t = wintoclient(trans))) {
1070 c->mon = t->mon;
1071 c->tags = t->tags;
1072 } else {
1073 c->mon = selmon;
1074 applyrules(c);
1075 }
1076
1077 if (c->x + WIDTH(c) > c->mon->wx + c->mon->ww)
1078 c->x = c->mon->wx + c->mon->ww - WIDTH(c);
1079 if (c->y + HEIGHT(c) > c->mon->wy + c->mon->wh)
1080 c->y = c->mon->wy + c->mon->wh - HEIGHT(c);
1081 c->x = MAX(c->x, c->mon->wx);
1082 c->y = MAX(c->y, c->mon->wy);
1083 c->bw = borderpx;
1084
1085 wc.border_width = c->bw;
1086 XConfigureWindow(dpy, w, CWBorderWidth, &wc);
1087 XSetWindowBorder(dpy, w, scheme[SchemeNorm][ColBorder].pixel);
1088 configure(c); /* propagates border_width, if size doesn't change */
1089 updatewindowtype(c);
1090 updatesizehints(c);
1091 updatewmhints(c);
1092 XSelectInput(dpy, w, EnterWindowMask|FocusChangeMask|PropertyChangeMask|StructureNotifyMask);
1093 grabbuttons(c, 0);
1094 if (!c->isfloating)
1095 c->isfloating = c->oldstate = trans != None || c->isfixed;
1096 if (c->isfloating)
1097 XRaiseWindow(dpy, c->win);
1098 attach(c);
1099 attachstack(c);
1100 XChangeProperty(dpy, root, netatom[NetClientList], XA_WINDOW, 32, PropModeAppend,
1101 (unsigned char *) &(c->win), 1);
1102 XMoveResizeWindow(dpy, c->win, c->x + 2 * sw, c->y, c->w, c->h); /* some windows require this */
1103 setclientstate(c, NormalState);
1104 if (c->mon == selmon)
1105 unfocus(selmon->sel, 0);
1106 c->mon->sel = c;
1107 arrange(c->mon);
1108 XMapWindow(dpy, c->win);
1109 focus(NULL);
1110}
1111
1112void
1113mappingnotify(XEvent *e)
1114{
1115 XMappingEvent *ev = &e->xmapping;
1116
1117 XRefreshKeyboardMapping(ev);
1118 if (ev->request == MappingKeyboard)
1119 grabkeys();
1120}
1121
1122void
1123maprequest(XEvent *e)
1124{
1125 static XWindowAttributes wa;
1126 XMapRequestEvent *ev = &e->xmaprequest;
1127
1128 if (!XGetWindowAttributes(dpy, ev->window, &wa) || wa.override_redirect)
1129 return;
1130 if (!wintoclient(ev->window))
1131 manage(ev->window, &wa);
1132}
1133
1134void
1135monocle(Monitor *m)
1136{
1137 unsigned int n = 0;
1138 Client *c;
1139
1140 for (c = m->clients; c; c = c->next)
1141 if (ISVISIBLE(c))
1142 n++;
1143 if (n > 0) /* override layout symbol */
1144 snprintf(m->ltsymbol, sizeof m->ltsymbol, "[%d]", n);
1145 for (c = nexttiled(m->clients); c; c = nexttiled(c->next))
1146 resize(c, m->wx, m->wy, m->ww - 2 * c->bw, m->wh - 2 * c->bw, 0);
1147}
1148
1149void
1150motionnotify(XEvent *e)
1151{
1152 static Monitor *mon = NULL;
1153 Monitor *m;
1154 XMotionEvent *ev = &e->xmotion;
1155
1156 if (ev->window != root)
1157 return;
1158 if ((m = recttomon(ev->x_root, ev->y_root, 1, 1)) != mon && mon) {
1159 unfocus(selmon->sel, 1);
1160 selmon = m;
1161 focus(NULL);
1162 }
1163 mon = m;
1164}
1165
1166void
1167movemouse(const Arg *arg)
1168{
1169 int x, y, ocx, ocy, nx, ny;
1170 Client *c;
1171 Monitor *m;
1172 XEvent ev;
1173 Time lasttime = 0;
1174
1175 if (!(c = selmon->sel) || !c->isfloating)
1176 return;
1177 restack(selmon);
1178 ocx = c->x;
1179 ocy = c->y;
1180 if (XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
1181 None, cursor[CurMove]->cursor, CurrentTime) != GrabSuccess)
1182 return;
1183 if (!getrootptr(&x, &y))
1184 return;
1185 do {
1186 XMaskEvent(dpy, MOUSEMASK|ExposureMask|SubstructureRedirectMask, &ev);
1187 switch(ev.type) {
1188 case ConfigureRequest:
1189 case Expose:
1190 case MapRequest:
1191 handler[ev.type](&ev);
1192 break;
1193 case MotionNotify:
1194 if ((ev.xmotion.time - lasttime) <= (1000 / 60))
1195 continue;
1196 lasttime = ev.xmotion.time;
1197
1198 nx = ocx + (ev.xmotion.x - x);
1199 ny = ocy + (ev.xmotion.y - y);
1200 if (abs(selmon->wx - nx) < snap)
1201 nx = selmon->wx;
1202 else if (abs((selmon->wx + selmon->ww) - (nx + WIDTH(c))) < snap)
1203 nx = selmon->wx + selmon->ww - WIDTH(c);
1204 if (abs(selmon->wy - ny) < snap)
1205 ny = selmon->wy;
1206 else if (abs((selmon->wy + selmon->wh) - (ny + HEIGHT(c))) < snap)
1207 ny = selmon->wy + selmon->wh - HEIGHT(c);
1208 if (!c->isfloating && selmon->lt[selmon->sellt]->arrange
1209 && (abs(nx - c->x) > snap || abs(ny - c->y) > snap))
1210 togglefloating(NULL);
1211 if (!selmon->lt[selmon->sellt]->arrange || c->isfloating)
1212 resize(c, nx, ny, c->w, c->h, 1);
1213 break;
1214 }
1215 } while (ev.type != ButtonRelease);
1216 XUngrabPointer(dpy, CurrentTime);
1217 if ((m = recttomon(c->x, c->y, c->w, c->h)) != selmon) {
1218 selmon = m;
1219 sendmon(c, m);
1220 }
1221}
1222
1223void
1224movestack(const Arg *arg) {
1225 Client **c, **at = NULL, **lt = NULL, **to = NULL;
1226
1227 if(!selmon->sel || selmon->sel->isfloating)
1228 return;
1229 for(c = &selmon->clients; *c; c = &(*c)->next) {
1230 if(*c == selmon->sel)
1231 at = c;
1232 else if(ISVISIBLE(*c) && !(*c)->isfloating) {
1233 lt = c;
1234 if(arg->i < 0 && !at)
1235 to = c;
1236 if(arg->i > 0 && at && !to)
1237 to = &(*c)->next;
1238 }
1239 }
1240 if(!lt)
1241 /* no other client tiled */
1242 return;
1243 if(!to)
1244 /* wrap around */
1245 to = arg->i > 0 ? &selmon->clients : &(*lt)->next;
1246 *at = selmon->sel->next;
1247 selmon->sel->next = *to;
1248 *to = selmon->sel;
1249 arrange(selmon);
1250}
1251
1252Client *
1253nexttiled(Client *c)
1254{
1255 for (; c && (c->isfloating || !ISVISIBLE(c)); c = c->next);
1256 return c;
1257}
1258
1259void
1260pop(Client *c)
1261{
1262 detach(c);
1263 attach(c);
1264 focus(c);
1265 arrange(c->mon);
1266}
1267
1268void
1269propertynotify(XEvent *e)
1270{
1271 Client *c;
1272 Window trans;
1273 XPropertyEvent *ev = &e->xproperty;
1274
1275 if ((ev->window == root) && (ev->atom == XA_WM_NAME))
1276 updatestatus();
1277 else if (ev->state == PropertyDelete)
1278 return; /* ignore */
1279 else if ((c = wintoclient(ev->window))) {
1280 switch(ev->atom) {
1281 default: break;
1282 case XA_WM_TRANSIENT_FOR:
1283 if (!c->isfloating && (XGetTransientForHint(dpy, c->win, &trans)) &&
1284 (c->isfloating = (wintoclient(trans)) != NULL))
1285 arrange(c->mon);
1286 break;
1287 case XA_WM_NORMAL_HINTS:
1288 c->hintsvalid = 0;
1289 break;
1290 case XA_WM_HINTS:
1291 updatewmhints(c);
1292 drawbars();
1293 break;
1294 }
1295 if (ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
1296 updatetitle(c);
1297 if (c == c->mon->sel)
1298 drawbar(c->mon);
1299 }
1300 if (ev->atom == netatom[NetWMWindowType])
1301 updatewindowtype(c);
1302 }
1303}
1304
1305void
1306quit(const Arg *arg)
1307{
1308 running = 0;
1309}
1310
1311Monitor *
1312recttomon(int x, int y, int w, int h)
1313{
1314 Monitor *m, *r = selmon;
1315 int a, area = 0;
1316
1317 for (m = mons; m; m = m->next)
1318 if ((a = INTERSECT(x, y, w, h, m)) > area) {
1319 area = a;
1320 r = m;
1321 }
1322 return r;
1323}
1324
1325void
1326resize(Client *c, int x, int y, int w, int h, int interact)
1327{
1328 if (applysizehints(c, &x, &y, &w, &h, interact))
1329 resizeclient(c, x, y, w, h);
1330}
1331
1332void
1333resizeclient(Client *c, int x, int y, int w, int h)
1334{
1335 XWindowChanges wc;
1336
1337 c->oldx = c->x; c->x = wc.x = x;
1338 c->oldy = c->y; c->y = wc.y = y;
1339 c->oldw = c->w; c->w = wc.width = w;
1340 c->oldh = c->h; c->h = wc.height = h;
1341 wc.border_width = c->bw;
1342 XConfigureWindow(dpy, c->win, CWX|CWY|CWWidth|CWHeight|CWBorderWidth, &wc);
1343 configure(c);
1344 XSync(dpy, False);
1345}
1346
1347void
1348resizemouse(const Arg *arg)
1349{
1350 int ocx, ocy, nw, nh;
1351 Client *c;
1352 Monitor *m;
1353 XEvent ev;
1354 Time lasttime = 0;
1355
1356 if (!(c = selmon->sel))
1357 return;
1358 if (c->isfullscreen) /* no support resizing fullscreen windows by mouse */
1359 return;
1360 restack(selmon);
1361 ocx = c->x;
1362 ocy = c->y;
1363 if (XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
1364 None, cursor[CurResize]->cursor, CurrentTime) != GrabSuccess)
1365 return;
1366 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->bw - 1, c->h + c->bw - 1);
1367 do {
1368 XMaskEvent(dpy, MOUSEMASK|ExposureMask|SubstructureRedirectMask, &ev);
1369 switch(ev.type) {
1370 case ConfigureRequest:
1371 case Expose:
1372 case MapRequest:
1373 handler[ev.type](&ev);
1374 break;
1375 case MotionNotify:
1376 if ((ev.xmotion.time - lasttime) <= (1000 / 60))
1377 continue;
1378 lasttime = ev.xmotion.time;
1379
1380 nw = MAX(ev.xmotion.x - ocx - 2 * c->bw + 1, 1);
1381 nh = MAX(ev.xmotion.y - ocy - 2 * c->bw + 1, 1);
1382 if (c->mon->wx + nw >= selmon->wx && c->mon->wx + nw <= selmon->wx + selmon->ww
1383 && c->mon->wy + nh >= selmon->wy && c->mon->wy + nh <= selmon->wy + selmon->wh)
1384 {
1385 if (!c->isfloating && selmon->lt[selmon->sellt]->arrange
1386 && (abs(nw - c->w) > snap || abs(nh - c->h) > snap))
1387 togglefloating(NULL);
1388 }
1389 if (!selmon->lt[selmon->sellt]->arrange || c->isfloating)
1390 resize(c, c->x, c->y, nw, nh, 1);
1391 break;
1392 }
1393 } while (ev.type != ButtonRelease);
1394 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->bw - 1, c->h + c->bw - 1);
1395 XUngrabPointer(dpy, CurrentTime);
1396 while (XCheckMaskEvent(dpy, EnterWindowMask, &ev));
1397 if ((m = recttomon(c->x, c->y, c->w, c->h)) != selmon) {
1398 sendmon(c, m);
1399 selmon = m;
1400 focus(NULL);
1401 }
1402}
1403
1404void
1405restack(Monitor *m)
1406{
1407 Client *c;
1408 XEvent ev;
1409 XWindowChanges wc;
1410
1411 drawbar(m);
1412 if (!m->sel)
1413 return;
1414 if (m->sel->isfloating || !m->lt[m->sellt]->arrange)
1415 XRaiseWindow(dpy, m->sel->win);
1416 if (m->lt[m->sellt]->arrange) {
1417 wc.stack_mode = Below;
1418 wc.sibling = m->barwin;
1419 for (c = m->stack; c; c = c->snext)
1420 if (!c->isfloating && ISVISIBLE(c)) {
1421 XConfigureWindow(dpy, c->win, CWSibling|CWStackMode, &wc);
1422 wc.sibling = c->win;
1423 }
1424 }
1425 XSync(dpy, False);
1426 while (XCheckMaskEvent(dpy, EnterWindowMask, &ev));
1427}
1428
1429void
1430run(void)
1431{
1432 XEvent ev;
1433 /* main event loop */
1434 XSync(dpy, False);
1435 while (running && !XNextEvent(dpy, &ev))
1436 if (handler[ev.type])
1437 handler[ev.type](&ev); /* call handler */
1438}
1439
1440void
1441scan(void)
1442{
1443 unsigned int i, num;
1444 Window d1, d2, *wins = NULL;
1445 XWindowAttributes wa;
1446
1447 if (XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
1448 for (i = 0; i < num; i++) {
1449 if (!XGetWindowAttributes(dpy, wins[i], &wa)
1450 || wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
1451 continue;
1452 if (wa.map_state == IsViewable || getstate(wins[i]) == IconicState)
1453 manage(wins[i], &wa);
1454 }
1455 for (i = 0; i < num; i++) { /* now the transients */
1456 if (!XGetWindowAttributes(dpy, wins[i], &wa))
1457 continue;
1458 if (XGetTransientForHint(dpy, wins[i], &d1)
1459 && (wa.map_state == IsViewable || getstate(wins[i]) == IconicState))
1460 manage(wins[i], &wa);
1461 }
1462 if (wins)
1463 XFree(wins);
1464 }
1465}
1466
1467void
1468sendmon(Client *c, Monitor *m)
1469{
1470 if (c->mon == m)
1471 return;
1472 unfocus(c, 1);
1473 detach(c);
1474 detachstack(c);
1475 c->mon = m;
1476 c->tags = m->tagset[m->seltags]; /* assign tags of target monitor */
1477 attach(c);
1478 attachstack(c);
1479 focus(NULL);
1480 arrange(NULL);
1481}
1482
1483void
1484setclientstate(Client *c, long state)
1485{
1486 long data[] = { state, None };
1487
1488 XChangeProperty(dpy, c->win, wmatom[WMState], wmatom[WMState], 32,
1489 PropModeReplace, (unsigned char *)data, 2);
1490}
1491
1492int
1493sendevent(Client *c, Atom proto)
1494{
1495 int n;
1496 Atom *protocols;
1497 int exists = 0;
1498 XEvent ev;
1499
1500 if (XGetWMProtocols(dpy, c->win, &protocols, &n)) {
1501 while (!exists && n--)
1502 exists = protocols[n] == proto;
1503 XFree(protocols);
1504 }
1505 if (exists) {
1506 ev.type = ClientMessage;
1507 ev.xclient.window = c->win;
1508 ev.xclient.message_type = wmatom[WMProtocols];
1509 ev.xclient.format = 32;
1510 ev.xclient.data.l[0] = proto;
1511 ev.xclient.data.l[1] = CurrentTime;
1512 XSendEvent(dpy, c->win, False, NoEventMask, &ev);
1513 }
1514 return exists;
1515}
1516
1517void
1518setfocus(Client *c)
1519{
1520 if (!c->neverfocus) {
1521 XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
1522 XChangeProperty(dpy, root, netatom[NetActiveWindow],
1523 XA_WINDOW, 32, PropModeReplace,
1524 (unsigned char *) &(c->win), 1);
1525 }
1526 sendevent(c, wmatom[WMTakeFocus]);
1527}
1528
1529void
1530setfullscreen(Client *c, int fullscreen)
1531{
1532 if (fullscreen && !c->isfullscreen) {
1533 XChangeProperty(dpy, c->win, netatom[NetWMState], XA_ATOM, 32,
1534 PropModeReplace, (unsigned char*)&netatom[NetWMFullscreen], 1);
1535 c->isfullscreen = 1;
1536 c->oldstate = c->isfloating;
1537 c->oldbw = c->bw;
1538 c->bw = 0;
1539 c->isfloating = 1;
1540 resizeclient(c, c->mon->mx, c->mon->my, c->mon->mw, c->mon->mh);
1541 XRaiseWindow(dpy, c->win);
1542 } else if (!fullscreen && c->isfullscreen){
1543 XChangeProperty(dpy, c->win, netatom[NetWMState], XA_ATOM, 32,
1544 PropModeReplace, (unsigned char*)0, 0);
1545 c->isfullscreen = 0;
1546 c->isfloating = c->oldstate;
1547 c->bw = c->oldbw;
1548 c->x = c->oldx;
1549 c->y = c->oldy;
1550 c->w = c->oldw;
1551 c->h = c->oldh;
1552 resizeclient(c, c->x, c->y, c->w, c->h);
1553 arrange(c->mon);
1554 }
1555}
1556
1557void
1558setlayout(const Arg *arg)
1559{
1560 if (!arg || !arg->v || arg->v != selmon->lt[selmon->sellt])
1561 selmon->sellt ^= 1;
1562 if (arg && arg->v)
1563 selmon->lt[selmon->sellt] = (Layout *)arg->v;
1564 strncpy(selmon->ltsymbol, selmon->lt[selmon->sellt]->symbol, sizeof selmon->ltsymbol);
1565 if (selmon->sel)
1566 arrange(selmon);
1567 else
1568 drawbar(selmon);
1569}
1570
1571/* arg > 1.0 will set mfact absolutely */
1572void
1573setmfact(const Arg *arg)
1574{
1575 float f;
1576
1577 if (!arg || !selmon->lt[selmon->sellt]->arrange)
1578 return;
1579 f = arg->f < 1.0 ? arg->f + selmon->mfact : arg->f - 1.0;
1580 if (f < 0.05 || f > 0.95)
1581 return;
1582 selmon->mfact = f;
1583 arrange(selmon);
1584}
1585
1586void
1587setup(void)
1588{
1589 int i;
1590 XSetWindowAttributes wa;
1591 Atom utf8string;
1592
1593 /* clean up any zombies immediately */
1594 sigchld(0);
1595
1596 /* init screen */
1597 screen = DefaultScreen(dpy);
1598 sw = DisplayWidth(dpy, screen);
1599 sh = DisplayHeight(dpy, screen);
1600 root = RootWindow(dpy, screen);
1601 drw = drw_create(dpy, screen, root, sw, sh);
1602 if (!drw_fontset_create(drw, fonts, LENGTH(fonts)))
1603 die("no fonts could be loaded.");
1604 lrpad = drw->fonts->h;
1605 bh = drw->fonts->h + 2;
1606 updategeom();
1607 /* init atoms */
1608 utf8string = XInternAtom(dpy, "UTF8_STRING", False);
1609 wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
1610 wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
1611 wmatom[WMState] = XInternAtom(dpy, "WM_STATE", False);
1612 wmatom[WMTakeFocus] = XInternAtom(dpy, "WM_TAKE_FOCUS", False);
1613 netatom[NetActiveWindow] = XInternAtom(dpy, "_NET_ACTIVE_WINDOW", False);
1614 netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
1615 netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
1616 netatom[NetWMState] = XInternAtom(dpy, "_NET_WM_STATE", False);
1617 netatom[NetWMCheck] = XInternAtom(dpy, "_NET_SUPPORTING_WM_CHECK", False);
1618 netatom[NetWMFullscreen] = XInternAtom(dpy, "_NET_WM_STATE_FULLSCREEN", False);
1619 netatom[NetWMWindowType] = XInternAtom(dpy, "_NET_WM_WINDOW_TYPE", False);
1620 netatom[NetWMWindowTypeDialog] = XInternAtom(dpy, "_NET_WM_WINDOW_TYPE_DIALOG", False);
1621 netatom[NetClientList] = XInternAtom(dpy, "_NET_CLIENT_LIST", False);
1622 /* init cursors */
1623 cursor[CurNormal] = drw_cur_create(drw, XC_left_ptr);
1624 cursor[CurResize] = drw_cur_create(drw, XC_sizing);
1625 cursor[CurMove] = drw_cur_create(drw, XC_fleur);
1626 /* init appearance */
1627 scheme = ecalloc(LENGTH(colors), sizeof(Clr *));
1628 for (i = 0; i < LENGTH(colors); i++)
1629 scheme[i] = drw_scm_create(drw, colors[i], 3);
1630 /* init bars */
1631 updatebars();
1632 updatestatus();
1633 /* supporting window for NetWMCheck */
1634 wmcheckwin = XCreateSimpleWindow(dpy, root, 0, 0, 1, 1, 0, 0, 0);
1635 XChangeProperty(dpy, wmcheckwin, netatom[NetWMCheck], XA_WINDOW, 32,
1636 PropModeReplace, (unsigned char *) &wmcheckwin, 1);
1637 XChangeProperty(dpy, wmcheckwin, netatom[NetWMName], utf8string, 8,
1638 PropModeReplace, (unsigned char *) "dwm", 3);
1639 XChangeProperty(dpy, root, netatom[NetWMCheck], XA_WINDOW, 32,
1640 PropModeReplace, (unsigned char *) &wmcheckwin, 1);
1641 /* EWMH support per view */
1642 XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
1643 PropModeReplace, (unsigned char *) netatom, NetLast);
1644 XDeleteProperty(dpy, root, netatom[NetClientList]);
1645 /* select events */
1646 wa.cursor = cursor[CurNormal]->cursor;
1647 wa.event_mask = SubstructureRedirectMask|SubstructureNotifyMask
1648 |ButtonPressMask|PointerMotionMask|EnterWindowMask
1649 |LeaveWindowMask|StructureNotifyMask|PropertyChangeMask;
1650 XChangeWindowAttributes(dpy, root, CWEventMask|CWCursor, &wa);
1651 XSelectInput(dpy, root, wa.event_mask);
1652 grabkeys();
1653 focus(NULL);
1654}
1655
1656void
1657seturgent(Client *c, int urg)
1658{
1659 XWMHints *wmh;
1660
1661 c->isurgent = urg;
1662 if (!(wmh = XGetWMHints(dpy, c->win)))
1663 return;
1664 wmh->flags = urg ? (wmh->flags | XUrgencyHint) : (wmh->flags & ~XUrgencyHint);
1665 XSetWMHints(dpy, c->win, wmh);
1666 XFree(wmh);
1667}
1668
1669void
1670showhide(Client *c)
1671{
1672 if (!c)
1673 return;
1674 if (ISVISIBLE(c)) {
1675 /* show clients top down */
1676 XMoveWindow(dpy, c->win, c->x, c->y);
1677 if ((!c->mon->lt[c->mon->sellt]->arrange || c->isfloating) && !c->isfullscreen)
1678 resize(c, c->x, c->y, c->w, c->h, 0);
1679 showhide(c->snext);
1680 } else {
1681 /* hide clients bottom up */
1682 showhide(c->snext);
1683 XMoveWindow(dpy, c->win, WIDTH(c) * -2, c->y);
1684 }
1685}
1686
1687void
1688sigchld(int unused)
1689{
1690 if (signal(SIGCHLD, sigchld) == SIG_ERR)
1691 die("can't install SIGCHLD handler:");
1692 while (0 < waitpid(-1, NULL, WNOHANG));
1693}
1694
1695void
1696spawn(const Arg *arg)
1697{
1698 if (fork() == 0) {
1699 if (dpy)
1700 close(ConnectionNumber(dpy));
1701 setsid();
1702 execvp(((char **)arg->v)[0], (char **)arg->v);
1703 die("dwm: execvp '%s' failed:", ((char **)arg->v)[0]);
1704 }
1705}
1706
1707void
1708tag(const Arg *arg)
1709{
1710 if (selmon->sel && arg->ui & TAGMASK) {
1711 selmon->sel->tags = arg->ui & TAGMASK;
1712 focus(NULL);
1713 arrange(selmon);
1714 }
1715}
1716
1717void
1718tagmon(const Arg *arg)
1719{
1720 if (!selmon->sel || !mons->next)
1721 return;
1722 sendmon(selmon->sel, dirtomon(arg->i));
1723}
1724
1725void
1726tile(Monitor *m)
1727{
1728 unsigned int i, n, h, mw, my, ty;
1729 Client *c;
1730
1731 for (n = 0, c = nexttiled(m->clients); c; c = nexttiled(c->next), n++);
1732 if (n == 0)
1733 return;
1734
1735 if (n > m->nmaster)
1736 mw = m->nmaster ? m->ww * m->mfact : 0;
1737 else
1738 mw = m->ww - gappx;
1739 for (i = 0, my = ty = gappx, c = nexttiled(m->clients); c; c = nexttiled(c->next), i++)
1740 if (i < m->nmaster) {
1741 h = (m->wh - my) / (MIN(n, m->nmaster) - i) - gappx;
1742 resize(c, m->wx + gappx, m->wy + my, mw - (2*c->bw) - gappx, h - (2*c->bw), 0);
1743 if (my + HEIGHT(c) + gappx < m->wh)
1744 my += HEIGHT(c) + gappx;
1745 } else {
1746 h = (m->wh - ty) / (n - i) - gappx;
1747 resize(c, m->wx + mw + gappx, m->wy + ty, m->ww - mw - (2*c->bw) - 2*gappx, h - (2*c->bw), 0);
1748 if (ty + HEIGHT(c) + gappx < m->wh)
1749 ty += HEIGHT(c) + gappx;
1750 }
1751}
1752
1753void
1754togglebar(const Arg *arg)
1755{
1756 selmon->showbar = !selmon->showbar;
1757 updatebarpos(selmon);
1758 XMoveResizeWindow(dpy, selmon->barwin, selmon->wx, selmon->by, selmon->ww, bh);
1759 arrange(selmon);
1760}
1761
1762void
1763togglefloating(const Arg *arg)
1764{
1765 if (!selmon->sel)
1766 return;
1767 if (selmon->sel->isfullscreen) /* no support for fullscreen windows */
1768 return;
1769 selmon->sel->isfloating = !selmon->sel->isfloating || selmon->sel->isfixed;
1770 if (selmon->sel->isfloating)
1771 resize(selmon->sel, selmon->sel->x, selmon->sel->y,
1772 selmon->sel->w, selmon->sel->h, 0);
1773 arrange(selmon);
1774}
1775
1776void
1777togglefullscrn(const Arg *arg) {
1778 Client *c;
1779
1780 if (!(c = selmon->sel))
1781 return;
1782
1783 setfullscreen(c, !c->isfullscreen);
1784 if (c->isfullscreen)
1785 c->isfloating = False;
1786}
1787
1788void
1789toggletag(const Arg *arg)
1790{
1791 unsigned int newtags;
1792
1793 if (!selmon->sel)
1794 return;
1795 newtags = selmon->sel->tags ^ (arg->ui & TAGMASK);
1796 if (newtags) {
1797 selmon->sel->tags = newtags;
1798 focus(NULL);
1799 arrange(selmon);
1800 }
1801}
1802
1803void
1804toggleview(const Arg *arg)
1805{
1806 unsigned int newtagset = selmon->tagset[selmon->seltags] ^ (arg->ui & TAGMASK);
1807
1808 if (newtagset) {
1809 selmon->tagset[selmon->seltags] = newtagset;
1810 focus(NULL);
1811 arrange(selmon);
1812 }
1813}
1814
1815void
1816unfocus(Client *c, int setfocus)
1817{
1818 if (!c)
1819 return;
1820 grabbuttons(c, 0);
1821 XSetWindowBorder(dpy, c->win, scheme[SchemeNorm][ColBorder].pixel);
1822 if (setfocus) {
1823 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
1824 XDeleteProperty(dpy, root, netatom[NetActiveWindow]);
1825 }
1826}
1827
1828void
1829unmanage(Client *c, int destroyed)
1830{
1831 Monitor *m = c->mon;
1832 XWindowChanges wc;
1833
1834 detach(c);
1835 detachstack(c);
1836 if (!destroyed) {
1837 wc.border_width = c->oldbw;
1838 XGrabServer(dpy); /* avoid race conditions */
1839 XSetErrorHandler(xerrordummy);
1840 XSelectInput(dpy, c->win, NoEventMask);
1841 XConfigureWindow(dpy, c->win, CWBorderWidth, &wc); /* restore border */
1842 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
1843 setclientstate(c, WithdrawnState);
1844 XSync(dpy, False);
1845 XSetErrorHandler(xerror);
1846 XUngrabServer(dpy);
1847 }
1848 free(c);
1849 focus(NULL);
1850 updateclientlist();
1851 arrange(m);
1852}
1853
1854void
1855unmapnotify(XEvent *e)
1856{
1857 Client *c;
1858 XUnmapEvent *ev = &e->xunmap;
1859
1860 if ((c = wintoclient(ev->window))) {
1861 if (ev->send_event)
1862 setclientstate(c, WithdrawnState);
1863 else
1864 unmanage(c, 0);
1865 }
1866}
1867
1868void
1869updatebars(void)
1870{
1871 Monitor *m;
1872 XSetWindowAttributes wa = {
1873 .override_redirect = True,
1874 .background_pixmap = ParentRelative,
1875 .event_mask = ButtonPressMask|ExposureMask
1876 };
1877 XClassHint ch = {"dwm", "dwm"};
1878 for (m = mons; m; m = m->next) {
1879 if (m->barwin)
1880 continue;
1881 m->barwin = XCreateWindow(dpy, root, m->wx, m->by, m->ww, bh, 0, DefaultDepth(dpy, screen),
1882 CopyFromParent, DefaultVisual(dpy, screen),
1883 CWOverrideRedirect|CWBackPixmap|CWEventMask, &wa);
1884 XDefineCursor(dpy, m->barwin, cursor[CurNormal]->cursor);
1885 XMapRaised(dpy, m->barwin);
1886 XSetClassHint(dpy, m->barwin, &ch);
1887 }
1888}
1889
1890void
1891updatebarpos(Monitor *m)
1892{
1893 m->wy = m->my;
1894 m->wh = m->mh;
1895 if (m->showbar) {
1896 m->wh -= bh;
1897 m->by = m->topbar ? m->wy : m->wy + m->wh;
1898 m->wy = m->topbar ? m->wy + bh : m->wy;
1899 } else
1900 m->by = -bh;
1901}
1902
1903void
1904updateclientlist()
1905{
1906 Client *c;
1907 Monitor *m;
1908
1909 XDeleteProperty(dpy, root, netatom[NetClientList]);
1910 for (m = mons; m; m = m->next)
1911 for (c = m->clients; c; c = c->next)
1912 XChangeProperty(dpy, root, netatom[NetClientList],
1913 XA_WINDOW, 32, PropModeAppend,
1914 (unsigned char *) &(c->win), 1);
1915}
1916
1917int
1918updategeom(void)
1919{
1920 int dirty = 0;
1921
1922#ifdef XINERAMA
1923 if (XineramaIsActive(dpy)) {
1924 int i, j, n, nn;
1925 Client *c;
1926 Monitor *m;
1927 XineramaScreenInfo *info = XineramaQueryScreens(dpy, &nn);
1928 XineramaScreenInfo *unique = NULL;
1929
1930 for (n = 0, m = mons; m; m = m->next, n++);
1931 /* only consider unique geometries as separate screens */
1932 unique = ecalloc(nn, sizeof(XineramaScreenInfo));
1933 for (i = 0, j = 0; i < nn; i++)
1934 if (isuniquegeom(unique, j, &info[i]))
1935 memcpy(&unique[j++], &info[i], sizeof(XineramaScreenInfo));
1936 XFree(info);
1937 nn = j;
1938
1939 /* new monitors if nn > n */
1940 for (i = n; i < nn; i++) {
1941 for (m = mons; m && m->next; m = m->next);
1942 if (m)
1943 m->next = createmon();
1944 else
1945 mons = createmon();
1946 }
1947 for (i = 0, m = mons; i < nn && m; m = m->next, i++)
1948 if (i >= n
1949 || unique[i].x_org != m->mx || unique[i].y_org != m->my
1950 || unique[i].width != m->mw || unique[i].height != m->mh)
1951 {
1952 dirty = 1;
1953 m->num = i;
1954 m->mx = m->wx = unique[i].x_org;
1955 m->my = m->wy = unique[i].y_org;
1956 m->mw = m->ww = unique[i].width;
1957 m->mh = m->wh = unique[i].height;
1958 updatebarpos(m);
1959 }
1960 /* removed monitors if n > nn */
1961 for (i = nn; i < n; i++) {
1962 for (m = mons; m && m->next; m = m->next);
1963 while ((c = m->clients)) {
1964 dirty = 1;
1965 m->clients = c->next;
1966 detachstack(c);
1967 c->mon = mons;
1968 attach(c);
1969 attachstack(c);
1970 }
1971 if (m == selmon)
1972 selmon = mons;
1973 cleanupmon(m);
1974 }
1975 free(unique);
1976 } else
1977#endif /* XINERAMA */
1978 { /* default monitor setup */
1979 if (!mons)
1980 mons = createmon();
1981 if (mons->mw != sw || mons->mh != sh) {
1982 dirty = 1;
1983 mons->mw = mons->ww = sw;
1984 mons->mh = mons->wh = sh;
1985 updatebarpos(mons);
1986 }
1987 }
1988 if (dirty) {
1989 selmon = mons;
1990 selmon = wintomon(root);
1991 }
1992 return dirty;
1993}
1994
1995void
1996updatenumlockmask(void)
1997{
1998 unsigned int i, j;
1999 XModifierKeymap *modmap;
2000
2001 numlockmask = 0;
2002 modmap = XGetModifierMapping(dpy);
2003 for (i = 0; i < 8; i++)
2004 for (j = 0; j < modmap->max_keypermod; j++)
2005 if (modmap->modifiermap[i * modmap->max_keypermod + j]
2006 == XKeysymToKeycode(dpy, XK_Num_Lock))
2007 numlockmask = (1 << i);
2008 XFreeModifiermap(modmap);
2009}
2010
2011void
2012updatesizehints(Client *c)
2013{
2014 long msize;
2015 XSizeHints size;
2016
2017 if (!XGetWMNormalHints(dpy, c->win, &size, &msize))
2018 /* size is uninitialized, ensure that size.flags aren't used */
2019 size.flags = PSize;
2020 if (size.flags & PBaseSize) {
2021 c->basew = size.base_width;
2022 c->baseh = size.base_height;
2023 } else if (size.flags & PMinSize) {
2024 c->basew = size.min_width;
2025 c->baseh = size.min_height;
2026 } else
2027 c->basew = c->baseh = 0;
2028 if (size.flags & PResizeInc) {
2029 c->incw = size.width_inc;
2030 c->inch = size.height_inc;
2031 } else
2032 c->incw = c->inch = 0;
2033 if (size.flags & PMaxSize) {
2034 c->maxw = size.max_width;
2035 c->maxh = size.max_height;
2036 } else
2037 c->maxw = c->maxh = 0;
2038 if (size.flags & PMinSize) {
2039 c->minw = size.min_width;
2040 c->minh = size.min_height;
2041 } else if (size.flags & PBaseSize) {
2042 c->minw = size.base_width;
2043 c->minh = size.base_height;
2044 } else
2045 c->minw = c->minh = 0;
2046 if (size.flags & PAspect) {
2047 c->mina = (float)size.min_aspect.y / size.min_aspect.x;
2048 c->maxa = (float)size.max_aspect.x / size.max_aspect.y;
2049 } else
2050 c->maxa = c->mina = 0.0;
2051 c->isfixed = (c->maxw && c->maxh && c->maxw == c->minw && c->maxh == c->minh);
2052 c->hintsvalid = 1;
2053}
2054
2055void
2056updatestatus(void)
2057{
2058 if (!gettextprop(root, XA_WM_NAME, stext, sizeof(stext)))
2059 strcpy(stext, "dwm-"VERSION);
2060 drawbar(selmon);
2061}
2062
2063void
2064updatetitle(Client *c)
2065{
2066 if (!gettextprop(c->win, netatom[NetWMName], c->name, sizeof c->name))
2067 gettextprop(c->win, XA_WM_NAME, c->name, sizeof c->name);
2068 if (c->name[0] == '\0') /* hack to mark broken clients */
2069 strcpy(c->name, broken);
2070}
2071
2072void
2073updatewindowtype(Client *c)
2074{
2075 Atom state = getatomprop(c, netatom[NetWMState]);
2076 Atom wtype = getatomprop(c, netatom[NetWMWindowType]);
2077
2078 if (state == netatom[NetWMFullscreen])
2079 setfullscreen(c, 1);
2080 if (wtype == netatom[NetWMWindowTypeDialog])
2081 c->isfloating = 1;
2082}
2083
2084void
2085updatewmhints(Client *c)
2086{
2087 XWMHints *wmh;
2088
2089 if ((wmh = XGetWMHints(dpy, c->win))) {
2090 if (c == selmon->sel && wmh->flags & XUrgencyHint) {
2091 wmh->flags &= ~XUrgencyHint;
2092 XSetWMHints(dpy, c->win, wmh);
2093 } else
2094 c->isurgent = (wmh->flags & XUrgencyHint) ? 1 : 0;
2095 if (wmh->flags & InputHint)
2096 c->neverfocus = !wmh->input;
2097 else
2098 c->neverfocus = 0;
2099 XFree(wmh);
2100 }
2101}
2102
2103void
2104view(const Arg *arg)
2105{
2106 Client *c;
2107
2108 if ((c = selmon->sel) && c->isfullscreen)
2109 setfullscreen(c, False);
2110
2111 if ((arg->ui & TAGMASK) == selmon->tagset[selmon->seltags])
2112 return;
2113 selmon->seltags ^= 1; /* toggle sel tagset */
2114 if (arg->ui & TAGMASK)
2115 selmon->tagset[selmon->seltags] = arg->ui & TAGMASK;
2116 focus(NULL);
2117 arrange(selmon);
2118}
2119
2120Client *
2121wintoclient(Window w)
2122{
2123 Client *c;
2124 Monitor *m;
2125
2126 for (m = mons; m; m = m->next)
2127 for (c = m->clients; c; c = c->next)
2128 if (c->win == w)
2129 return c;
2130 return NULL;
2131}
2132
2133Monitor *
2134wintomon(Window w)
2135{
2136 int x, y;
2137 Client *c;
2138 Monitor *m;
2139
2140 if (w == root && getrootptr(&x, &y))
2141 return recttomon(x, y, 1, 1);
2142 for (m = mons; m; m = m->next)
2143 if (w == m->barwin)
2144 return m;
2145 if ((c = wintoclient(w)))
2146 return c->mon;
2147 return selmon;
2148}
2149
2150/* There's no way to check accesses to destroyed windows, thus those cases are
2151 * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
2152 * default error handler, which may call exit. */
2153int
2154xerror(Display *dpy, XErrorEvent *ee)
2155{
2156 if (ee->error_code == BadWindow
2157 || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
2158 || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
2159 || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
2160 || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
2161 || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
2162 || (ee->request_code == X_GrabButton && ee->error_code == BadAccess)
2163 || (ee->request_code == X_GrabKey && ee->error_code == BadAccess)
2164 || (ee->request_code == X_CopyArea && ee->error_code == BadDrawable))
2165 return 0;
2166 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
2167 ee->request_code, ee->error_code);
2168 return xerrorxlib(dpy, ee); /* may call exit */
2169}
2170
2171int
2172xerrordummy(Display *dpy, XErrorEvent *ee)
2173{
2174 return 0;
2175}
2176
2177/* Startup Error handler to check if another window manager
2178 * is already running. */
2179int
2180xerrorstart(Display *dpy, XErrorEvent *ee)
2181{
2182 die("dwm: another window manager is already running");
2183 return -1;
2184}
2185
2186void
2187zoom(const Arg *arg)
2188{
2189 Client *c = selmon->sel;
2190
2191 if (c && c->isfullscreen)
2192 setfullscreen(c, False);
2193
2194 if (!selmon->lt[selmon->sellt]->arrange || !c || c->isfloating)
2195 return;
2196 if (c == nexttiled(selmon->clients) && !(c = nexttiled(c->next)))
2197 return;
2198 pop(c);
2199}
2200
2201int
2202main(int argc, char *argv[])
2203{
2204 if (argc == 2 && !strcmp("-v", argv[1]))
2205 die("dwm-"VERSION);
2206 else if (argc != 1)
2207 die("usage: dwm [-v]");
2208 if (!setlocale(LC_CTYPE, "") || !XSupportsLocale())
2209 fputs("warning: no locale support\n", stderr);
2210 if (!(dpy = XOpenDisplay(NULL)))
2211 die("dwm: cannot open display");
2212 checkotherwm();
2213 setup();
2214#ifdef __OpenBSD__
2215 if (pledge("stdio rpath proc exec", NULL) == -1)
2216 die("pledge");
2217#endif /* __OpenBSD__ */
2218 scan();
2219 run();
2220 cleanup();
2221 XCloseDisplay(dpy);
2222 return EXIT_SUCCESS;
2223}