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Importing source code for stock dwm, version 6.4.
[dwm] / dwm.c
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AT		 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#include "drw.h"
45#include "util.h"
46
47/* macros */
48#define BUTTONMASK (ButtonPressMask|ButtonReleaseMask)
49#define CLEANMASK(mask) (mask & ~(numlockmask|LockMask) & (ShiftMask|ControlMask|Mod1Mask|Mod2Mask|Mod3Mask|Mod4Mask|Mod5Mask))
50#define INTERSECT(x,y,w,h,m) (MAX(0, MIN((x)+(w),(m)->wx+(m)->ww) - MAX((x),(m)->wx)) \
51 * MAX(0, MIN((y)+(h),(m)->wy+(m)->wh) - MAX((y),(m)->wy)))
52#define ISVISIBLE(C) ((C->tags & C->mon->tagset[C->mon->seltags]))
53#define LENGTH(X) (sizeof X / sizeof X[0])
54#define MOUSEMASK (BUTTONMASK|PointerMotionMask)
55#define WIDTH(X) ((X)->w + 2 * (X)->bw)
56#define HEIGHT(X) ((X)->h + 2 * (X)->bw)
57#define TAGMASK ((1 << LENGTH(tags)) - 1)
58#define TEXTW(X) (drw_fontset_getwidth(drw, (X)) + lrpad)
59
60/* enums */
61enum { CurNormal, CurResize, CurMove, CurLast }; /* cursor */
62enum { SchemeNorm, SchemeSel }; /* color schemes */
63enum { NetSupported, NetWMName, NetWMState, NetWMCheck,
64 NetWMFullscreen, NetActiveWindow, NetWMWindowType,
65 NetWMWindowTypeDialog, NetClientList, NetLast }; /* EWMH atoms */
66enum { WMProtocols, WMDelete, WMState, WMTakeFocus, WMLast }; /* default atoms */
67enum { ClkTagBar, ClkLtSymbol, ClkStatusText, ClkWinTitle,
68 ClkClientWin, ClkRootWin, ClkLast }; /* clicks */
69
70typedef union {
71 int i;
72 unsigned int ui;
73 float f;
74 const void *v;
75} Arg;
76
77typedef struct {
78 unsigned int click;
79 unsigned int mask;
80 unsigned int button;
81 void (*func)(const Arg *arg);
82 const Arg arg;
83} Button;
84
85typedef struct Monitor Monitor;
86typedef struct Client Client;
87struct Client {
88 char name[256];
89 float mina, maxa;
90 int x, y, w, h;
91 int oldx, oldy, oldw, oldh;
92 int basew, baseh, incw, inch, maxw, maxh, minw, minh, hintsvalid;
93 int bw, oldbw;
94 unsigned int tags;
95 int isfixed, isfloating, isurgent, neverfocus, oldstate, isfullscreen;
96 Client *next;
97 Client *snext;
98 Monitor *mon;
99 Window win;
100};
101
102typedef struct {
103 unsigned int mod;
104 KeySym keysym;
105 void (*func)(const Arg *);
106 const Arg arg;
107} Key;
108
109typedef struct {
110 const char *symbol;
111 void (*arrange)(Monitor *);
112} Layout;
113
114struct Monitor {
115 char ltsymbol[16];
116 float mfact;
117 int nmaster;
118 int num;
119 int by; /* bar geometry */
120 int mx, my, mw, mh; /* screen size */
121 int wx, wy, ww, wh; /* window area */
122 unsigned int seltags;
123 unsigned int sellt;
124 unsigned int tagset[2];
125 int showbar;
126 int topbar;
127 Client *clients;
128 Client *sel;
129 Client *stack;
130 Monitor *next;
131 Window barwin;
132 const Layout *lt[2];
133};
134
135typedef struct {
136 const char *class;
137 const char *instance;
138 const char *title;
139 unsigned int tags;
140 int isfloating;
141 int monitor;
142} Rule;
143
144/* function declarations */
145static void applyrules(Client *c);
146static int applysizehints(Client *c, int *x, int *y, int *w, int *h, int interact);
147static void arrange(Monitor *m);
148static void arrangemon(Monitor *m);
149static void attach(Client *c);
150static void attachstack(Client *c);
151static void buttonpress(XEvent *e);
152static void checkotherwm(void);
153static void cleanup(void);
154static void cleanupmon(Monitor *mon);
155static void clientmessage(XEvent *e);
156static void configure(Client *c);
157static void configurenotify(XEvent *e);
158static void configurerequest(XEvent *e);
159static Monitor *createmon(void);
160static void destroynotify(XEvent *e);
161static void detach(Client *c);
162static void detachstack(Client *c);
163static Monitor *dirtomon(int dir);
164static void drawbar(Monitor *m);
165static void drawbars(void);
166static void enternotify(XEvent *e);
167static void expose(XEvent *e);
168static void focus(Client *c);
169static void focusin(XEvent *e);
170static void focusmon(const Arg *arg);
171static void focusstack(const Arg *arg);
172static Atom getatomprop(Client *c, Atom prop);
173static int getrootptr(int *x, int *y);
174static long getstate(Window w);
175static int gettextprop(Window w, Atom atom, char *text, unsigned int size);
176static void grabbuttons(Client *c, int focused);
177static void grabkeys(void);
178static void incnmaster(const Arg *arg);
179static void keypress(XEvent *e);
180static void killclient(const Arg *arg);
181static void manage(Window w, XWindowAttributes *wa);
182static void mappingnotify(XEvent *e);
183static void maprequest(XEvent *e);
184static void monocle(Monitor *m);
185static void motionnotify(XEvent *e);
186static void movemouse(const Arg *arg);
187static Client *nexttiled(Client *c);
188static void pop(Client *c);
189static void propertynotify(XEvent *e);
190static void quit(const Arg *arg);
191static Monitor *recttomon(int x, int y, int w, int h);
192static void resize(Client *c, int x, int y, int w, int h, int interact);
193static void resizeclient(Client *c, int x, int y, int w, int h);
194static void resizemouse(const Arg *arg);
195static void restack(Monitor *m);
196static void run(void);
197static void scan(void);
198static int sendevent(Client *c, Atom proto);
199static void sendmon(Client *c, Monitor *m);
200static void setclientstate(Client *c, long state);
201static void setfocus(Client *c);
202static void setfullscreen(Client *c, int fullscreen);
203static void setlayout(const Arg *arg);
204static void setmfact(const Arg *arg);
205static void setup(void);
206static void seturgent(Client *c, int urg);
207static void showhide(Client *c);
208static void sigchld(int unused);
209static void spawn(const Arg *arg);
210static void tag(const Arg *arg);
211static void tagmon(const Arg *arg);
212static void tile(Monitor *m);
213static void togglebar(const Arg *arg);
214static void togglefloating(const Arg *arg);
215static void toggletag(const Arg *arg);
216static void toggleview(const Arg *arg);
217static void unfocus(Client *c, int setfocus);
218static void unmanage(Client *c, int destroyed);
219static void unmapnotify(XEvent *e);
220static void updatebarpos(Monitor *m);
221static void updatebars(void);
222static void updateclientlist(void);
223static int updategeom(void);
224static void updatenumlockmask(void);
225static void updatesizehints(Client *c);
226static void updatestatus(void);
227static void updatetitle(Client *c);
228static void updatewindowtype(Client *c);
229static void updatewmhints(Client *c);
230static void view(const Arg *arg);
231static Client *wintoclient(Window w);
232static Monitor *wintomon(Window w);
233static int xerror(Display *dpy, XErrorEvent *ee);
234static int xerrordummy(Display *dpy, XErrorEvent *ee);
235static int xerrorstart(Display *dpy, XErrorEvent *ee);
236static void zoom(const Arg *arg);
237
238/* variables */
239static const char broken[] = "broken";
240static char stext[256];
241static int screen;
242static int sw, sh; /* X display screen geometry width, height */
243static int bh; /* bar height */
244static int lrpad; /* sum of left and right padding for text */
245static int (*xerrorxlib)(Display *, XErrorEvent *);
246static unsigned int numlockmask = 0;
247static void (*handler[LASTEvent]) (XEvent *) = {
248 [ButtonPress] = buttonpress,
249 [ClientMessage] = clientmessage,
250 [ConfigureRequest] = configurerequest,
251 [ConfigureNotify] = configurenotify,
252 [DestroyNotify] = destroynotify,
253 [EnterNotify] = enternotify,
254 [Expose] = expose,
255 [FocusIn] = focusin,
256 [KeyPress] = keypress,
257 [MappingNotify] = mappingnotify,
258 [MapRequest] = maprequest,
259 [MotionNotify] = motionnotify,
260 [PropertyNotify] = propertynotify,
261 [UnmapNotify] = unmapnotify
262};
263static Atom wmatom[WMLast], netatom[NetLast];
264static int running = 1;
265static Cur *cursor[CurLast];
266static Clr **scheme;
267static Display *dpy;
268static Drw *drw;
269static Monitor *mons, *selmon;
270static Window root, wmcheckwin;
271
272/* configuration, allows nested code to access above variables */
273#include "config.h"
274
275/* compile-time check if all tags fit into an unsigned int bit array. */
276struct NumTags { char limitexceeded[LENGTH(tags) > 31 ? -1 : 1]; };
277
278/* function implementations */
279void
280applyrules(Client *c)
281{
282 const char *class, *instance;
283 unsigned int i;
284 const Rule *r;
285 Monitor *m;
286 XClassHint ch = { NULL, NULL };
287
288 /* rule matching */
289 c->isfloating = 0;
290 c->tags = 0;
291 XGetClassHint(dpy, c->win, &ch);
292 class = ch.res_class ? ch.res_class : broken;
293 instance = ch.res_name ? ch.res_name : broken;
294
295 for (i = 0; i < LENGTH(rules); i++) {
296 r = &rules[i];
297 if ((!r->title || strstr(c->name, r->title))
298 && (!r->class || strstr(class, r->class))
299 && (!r->instance || strstr(instance, r->instance)))
300 {
301 c->isfloating = r->isfloating;
302 c->tags |= r->tags;
303 for (m = mons; m && m->num != r->monitor; m = m->next);
304 if (m)
305 c->mon = m;
306 }
307 }
308 if (ch.res_class)
309 XFree(ch.res_class);
310 if (ch.res_name)
311 XFree(ch.res_name);
312 c->tags = c->tags & TAGMASK ? c->tags & TAGMASK : c->mon->tagset[c->mon->seltags];
313}
314
315int
316applysizehints(Client *c, int *x, int *y, int *w, int *h, int interact)
317{
318 int baseismin;
319 Monitor *m = c->mon;
320
321 /* set minimum possible */
322 *w = MAX(1, *w);
323 *h = MAX(1, *h);
324 if (interact) {
325 if (*x > sw)
326 *x = sw - WIDTH(c);
327 if (*y > sh)
328 *y = sh - HEIGHT(c);
329 if (*x + *w + 2 * c->bw < 0)
330 *x = 0;
331 if (*y + *h + 2 * c->bw < 0)
332 *y = 0;
333 } else {
334 if (*x >= m->wx + m->ww)
335 *x = m->wx + m->ww - WIDTH(c);
336 if (*y >= m->wy + m->wh)
337 *y = m->wy + m->wh - HEIGHT(c);
338 if (*x + *w + 2 * c->bw <= m->wx)
339 *x = m->wx;
340 if (*y + *h + 2 * c->bw <= m->wy)
341 *y = m->wy;
342 }
343 if (*h < bh)
344 *h = bh;
345 if (*w < bh)
346 *w = bh;
347 if (resizehints || c->isfloating || !c->mon->lt[c->mon->sellt]->arrange) {
348 if (!c->hintsvalid)
349 updatesizehints(c);
350 /* see last two sentences in ICCCM 4.1.2.3 */
351 baseismin = c->basew == c->minw && c->baseh == c->minh;
352 if (!baseismin) { /* temporarily remove base dimensions */
353 *w -= c->basew;
354 *h -= c->baseh;
355 }
356 /* adjust for aspect limits */
357 if (c->mina > 0 && c->maxa > 0) {
358 if (c->maxa < (float)*w / *h)
359 *w = *h * c->maxa + 0.5;
360 else if (c->mina < (float)*h / *w)
361 *h = *w * c->mina + 0.5;
362 }
363 if (baseismin) { /* increment calculation requires this */
364 *w -= c->basew;
365 *h -= c->baseh;
366 }
367 /* adjust for increment value */
368 if (c->incw)
369 *w -= *w % c->incw;
370 if (c->inch)
371 *h -= *h % c->inch;
372 /* restore base dimensions */
373 *w = MAX(*w + c->basew, c->minw);
374 *h = MAX(*h + c->baseh, c->minh);
375 if (c->maxw)
376 *w = MIN(*w, c->maxw);
377 if (c->maxh)
378 *h = MIN(*h, c->maxh);
379 }
380 return *x != c->x || *y != c->y || *w != c->w || *h != c->h;
381}
382
383void
384arrange(Monitor *m)
385{
386 if (m)
387 showhide(m->stack);
388 else for (m = mons; m; m = m->next)
389 showhide(m->stack);
390 if (m) {
391 arrangemon(m);
392 restack(m);
393 } else for (m = mons; m; m = m->next)
394 arrangemon(m);
395}
396
397void
398arrangemon(Monitor *m)
399{
400 strncpy(m->ltsymbol, m->lt[m->sellt]->symbol, sizeof m->ltsymbol);
401 if (m->lt[m->sellt]->arrange)
402 m->lt[m->sellt]->arrange(m);
403}
404
405void
406attach(Client *c)
407{
408 c->next = c->mon->clients;
409 c->mon->clients = c;
410}
411
412void
413attachstack(Client *c)
414{
415 c->snext = c->mon->stack;
416 c->mon->stack = c;
417}
418
419void
420buttonpress(XEvent *e)
421{
422 unsigned int i, x, click;
423 Arg arg = {0};
424 Client *c;
425 Monitor *m;
426 XButtonPressedEvent *ev = &e->xbutton;
427
428 click = ClkRootWin;
429 /* focus monitor if necessary */
430 if ((m = wintomon(ev->window)) && m != selmon) {
431 unfocus(selmon->sel, 1);
432 selmon = m;
433 focus(NULL);
434 }
435 if (ev->window == selmon->barwin) {
436 i = x = 0;
437 do
438 x += TEXTW(tags[i]);
439 while (ev->x >= x && ++i < LENGTH(tags));
440 if (i < LENGTH(tags)) {
441 click = ClkTagBar;
442 arg.ui = 1 << i;
443 } else if (ev->x < x + TEXTW(selmon->ltsymbol))
444 click = ClkLtSymbol;
445 else if (ev->x > selmon->ww - (int)TEXTW(stext))
446 click = ClkStatusText;
447 else
448 click = ClkWinTitle;
449 } else if ((c = wintoclient(ev->window))) {
450 focus(c);
451 restack(selmon);
452 XAllowEvents(dpy, ReplayPointer, CurrentTime);
453 click = ClkClientWin;
454 }
455 for (i = 0; i < LENGTH(buttons); i++)
456 if (click == buttons[i].click && buttons[i].func && buttons[i].button == ev->button
457 && CLEANMASK(buttons[i].mask) == CLEANMASK(ev->state))
458 buttons[i].func(click == ClkTagBar && buttons[i].arg.i == 0 ? &arg : &buttons[i].arg);
459}
460
461void
462checkotherwm(void)
463{
464 xerrorxlib = XSetErrorHandler(xerrorstart);
465 /* this causes an error if some other window manager is running */
466 XSelectInput(dpy, DefaultRootWindow(dpy), SubstructureRedirectMask);
467 XSync(dpy, False);
468 XSetErrorHandler(xerror);
469 XSync(dpy, False);
470}
471
472void
473cleanup(void)
474{
475 Arg a = {.ui = ~0};
476 Layout foo = { "", NULL };
477 Monitor *m;
478 size_t i;
479
480 view(&a);
481 selmon->lt[selmon->sellt] = &foo;
482 for (m = mons; m; m = m->next)
483 while (m->stack)
484 unmanage(m->stack, 0);
485 XUngrabKey(dpy, AnyKey, AnyModifier, root);
486 while (mons)
487 cleanupmon(mons);
488 for (i = 0; i < CurLast; i++)
489 drw_cur_free(drw, cursor[i]);
490 for (i = 0; i < LENGTH(colors); i++)
491 free(scheme[i]);
492 free(scheme);
493 XDestroyWindow(dpy, wmcheckwin);
494 drw_free(drw);
495 XSync(dpy, False);
496 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
497 XDeleteProperty(dpy, root, netatom[NetActiveWindow]);
498}
499
500void
501cleanupmon(Monitor *mon)
502{
503 Monitor *m;
504
505 if (mon == mons)
506 mons = mons->next;
507 else {
508 for (m = mons; m && m->next != mon; m = m->next);
509 m->next = mon->next;
510 }
511 XUnmapWindow(dpy, mon->barwin);
512 XDestroyWindow(dpy, mon->barwin);
513 free(mon);
514}
515
516void
517clientmessage(XEvent *e)
518{
519 XClientMessageEvent *cme = &e->xclient;
520 Client *c = wintoclient(cme->window);
521
522 if (!c)
523 return;
524 if (cme->message_type == netatom[NetWMState]) {
525 if (cme->data.l[1] == netatom[NetWMFullscreen]
526 || cme->data.l[2] == netatom[NetWMFullscreen])
527 setfullscreen(c, (cme->data.l[0] == 1 /* _NET_WM_STATE_ADD */
528 || (cme->data.l[0] == 2 /* _NET_WM_STATE_TOGGLE */ && !c->isfullscreen)));
529 } else if (cme->message_type == netatom[NetActiveWindow]) {
530 if (c != selmon->sel && !c->isurgent)
531 seturgent(c, 1);
532 }
533}
534
535void
536configure(Client *c)
537{
538 XConfigureEvent ce;
539
540 ce.type = ConfigureNotify;
541 ce.display = dpy;
542 ce.event = c->win;
543 ce.window = c->win;
544 ce.x = c->x;
545 ce.y = c->y;
546 ce.width = c->w;
547 ce.height = c->h;
548 ce.border_width = c->bw;
549 ce.above = None;
550 ce.override_redirect = False;
551 XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&ce);
552}
553
554void
555configurenotify(XEvent *e)
556{
557 Monitor *m;
558 Client *c;
559 XConfigureEvent *ev = &e->xconfigure;
560 int dirty;
561
562 /* TODO: updategeom handling sucks, needs to be simplified */
563 if (ev->window == root) {
564 dirty = (sw != ev->width || sh != ev->height);
565 sw = ev->width;
566 sh = ev->height;
567 if (updategeom() || dirty) {
568 drw_resize(drw, sw, bh);
569 updatebars();
570 for (m = mons; m; m = m->next) {
571 for (c = m->clients; c; c = c->next)
572 if (c->isfullscreen)
573 resizeclient(c, m->mx, m->my, m->mw, m->mh);
574 XMoveResizeWindow(dpy, m->barwin, m->wx, m->by, m->ww, bh);
575 }
576 focus(NULL);
577 arrange(NULL);
578 }
579 }
580}
581
582void
583configurerequest(XEvent *e)
584{
585 Client *c;
586 Monitor *m;
587 XConfigureRequestEvent *ev = &e->xconfigurerequest;
588 XWindowChanges wc;
589
590 if ((c = wintoclient(ev->window))) {
591 if (ev->value_mask & CWBorderWidth)
592 c->bw = ev->border_width;
593 else if (c->isfloating || !selmon->lt[selmon->sellt]->arrange) {
594 m = c->mon;
595 if (ev->value_mask & CWX) {
596 c->oldx = c->x;
597 c->x = m->mx + ev->x;
598 }
599 if (ev->value_mask & CWY) {
600 c->oldy = c->y;
601 c->y = m->my + ev->y;
602 }
603 if (ev->value_mask & CWWidth) {
604 c->oldw = c->w;
605 c->w = ev->width;
606 }
607 if (ev->value_mask & CWHeight) {
608 c->oldh = c->h;
609 c->h = ev->height;
610 }
611 if ((c->x + c->w) > m->mx + m->mw && c->isfloating)
612 c->x = m->mx + (m->mw / 2 - WIDTH(c) / 2); /* center in x direction */
613 if ((c->y + c->h) > m->my + m->mh && c->isfloating)
614 c->y = m->my + (m->mh / 2 - HEIGHT(c) / 2); /* center in y direction */
615 if ((ev->value_mask & (CWX|CWY)) && !(ev->value_mask & (CWWidth|CWHeight)))
616 configure(c);
617 if (ISVISIBLE(c))
618 XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
619 } else
620 configure(c);
621 } else {
622 wc.x = ev->x;
623 wc.y = ev->y;
624 wc.width = ev->width;
625 wc.height = ev->height;
626 wc.border_width = ev->border_width;
627 wc.sibling = ev->above;
628 wc.stack_mode = ev->detail;
629 XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
630 }
631 XSync(dpy, False);
632}
633
634Monitor *
635createmon(void)
636{
637 Monitor *m;
638
639 m = ecalloc(1, sizeof(Monitor));
640 m->tagset[0] = m->tagset[1] = 1;
641 m->mfact = mfact;
642 m->nmaster = nmaster;
643 m->showbar = showbar;
644 m->topbar = topbar;
645 m->lt[0] = &layouts[0];
646 m->lt[1] = &layouts[1 % LENGTH(layouts)];
647 strncpy(m->ltsymbol, layouts[0].symbol, sizeof m->ltsymbol);
648 return m;
649}
650
651void
652destroynotify(XEvent *e)
653{
654 Client *c;
655 XDestroyWindowEvent *ev = &e->xdestroywindow;
656
657 if ((c = wintoclient(ev->window)))
658 unmanage(c, 1);
659}
660
661void
662detach(Client *c)
663{
664 Client **tc;
665
666 for (tc = &c->mon->clients; *tc && *tc != c; tc = &(*tc)->next);
667 *tc = c->next;
668}
669
670void
671detachstack(Client *c)
672{
673 Client **tc, *t;
674
675 for (tc = &c->mon->stack; *tc && *tc != c; tc = &(*tc)->snext);
676 *tc = c->snext;
677
678 if (c == c->mon->sel) {
679 for (t = c->mon->stack; t && !ISVISIBLE(t); t = t->snext);
680 c->mon->sel = t;
681 }
682}
683
684Monitor *
685dirtomon(int dir)
686{
687 Monitor *m = NULL;
688
689 if (dir > 0) {
690 if (!(m = selmon->next))
691 m = mons;
692 } else if (selmon == mons)
693 for (m = mons; m->next; m = m->next);
694 else
695 for (m = mons; m->next != selmon; m = m->next);
696 return m;
697}
698
699void
700drawbar(Monitor *m)
701{
702 int x, w, tw = 0;
703 int boxs = drw->fonts->h / 9;
704 int boxw = drw->fonts->h / 6 + 2;
705 unsigned int i, occ = 0, urg = 0;
706 Client *c;
707
708 if (!m->showbar)
709 return;
710
711 /* draw status first so it can be overdrawn by tags later */
712 if (m == selmon) { /* status is only drawn on selected monitor */
713 drw_setscheme(drw, scheme[SchemeNorm]);
714 tw = TEXTW(stext) - lrpad + 2; /* 2px right padding */
715 drw_text(drw, m->ww - tw, 0, tw, bh, 0, stext, 0);
716 }
717
718 for (c = m->clients; c; c = c->next) {
719 occ |= c->tags;
720 if (c->isurgent)
721 urg |= c->tags;
722 }
723 x = 0;
724 for (i = 0; i < LENGTH(tags); i++) {
725 w = TEXTW(tags[i]);
726 drw_setscheme(drw, scheme[m->tagset[m->seltags] & 1 << i ? SchemeSel : SchemeNorm]);
727 drw_text(drw, x, 0, w, bh, lrpad / 2, tags[i], urg & 1 << i);
728 if (occ & 1 << i)
729 drw_rect(drw, x + boxs, boxs, boxw, boxw,
730 m == selmon && selmon->sel && selmon->sel->tags & 1 << i,
731 urg & 1 << i);
732 x += w;
733 }
734 w = TEXTW(m->ltsymbol);
735 drw_setscheme(drw, scheme[SchemeNorm]);
736 x = drw_text(drw, x, 0, w, bh, lrpad / 2, m->ltsymbol, 0);
737
738 if ((w = m->ww - tw - x) > bh) {
739 if (m->sel) {
740 drw_setscheme(drw, scheme[m == selmon ? SchemeSel : SchemeNorm]);
741 drw_text(drw, x, 0, w, bh, lrpad / 2, m->sel->name, 0);
742 if (m->sel->isfloating)
743 drw_rect(drw, x + boxs, boxs, boxw, boxw, m->sel->isfixed, 0);
744 } else {
745 drw_setscheme(drw, scheme[SchemeNorm]);
746 drw_rect(drw, x, 0, w, bh, 1, 1);
747 }
748 }
749 drw_map(drw, m->barwin, 0, 0, m->ww, bh);
750}
751
752void
753drawbars(void)
754{
755 Monitor *m;
756
757 for (m = mons; m; m = m->next)
758 drawbar(m);
759}
760
761void
762enternotify(XEvent *e)
763{
764 Client *c;
765 Monitor *m;
766 XCrossingEvent *ev = &e->xcrossing;
767
768 if ((ev->mode != NotifyNormal || ev->detail == NotifyInferior) && ev->window != root)
769 return;
770 c = wintoclient(ev->window);
771 m = c ? c->mon : wintomon(ev->window);
772 if (m != selmon) {
773 unfocus(selmon->sel, 1);
774 selmon = m;
775 } else if (!c || c == selmon->sel)
776 return;
777 focus(c);
778}
779
780void
781expose(XEvent *e)
782{
783 Monitor *m;
784 XExposeEvent *ev = &e->xexpose;
785
786 if (ev->count == 0 && (m = wintomon(ev->window)))
787 drawbar(m);
788}
789
790void
791focus(Client *c)
792{
793 if (!c || !ISVISIBLE(c))
794 for (c = selmon->stack; c && !ISVISIBLE(c); c = c->snext);
795 if (selmon->sel && selmon->sel != c)
796 unfocus(selmon->sel, 0);
797 if (c) {
798 if (c->mon != selmon)
799 selmon = c->mon;
800 if (c->isurgent)
801 seturgent(c, 0);
802 detachstack(c);
803 attachstack(c);
804 grabbuttons(c, 1);
805 XSetWindowBorder(dpy, c->win, scheme[SchemeSel][ColBorder].pixel);
806 setfocus(c);
807 } else {
808 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
809 XDeleteProperty(dpy, root, netatom[NetActiveWindow]);
810 }
811 selmon->sel = c;
812 drawbars();
813}
814
815/* there are some broken focus acquiring clients needing extra handling */
816void
817focusin(XEvent *e)
818{
819 XFocusChangeEvent *ev = &e->xfocus;
820
821 if (selmon->sel && ev->window != selmon->sel->win)
822 setfocus(selmon->sel);
823}
824
825void
826focusmon(const Arg *arg)
827{
828 Monitor *m;
829
830 if (!mons->next)
831 return;
832 if ((m = dirtomon(arg->i)) == selmon)
833 return;
834 unfocus(selmon->sel, 0);
835 selmon = m;
836 focus(NULL);
837}
838
839void
840focusstack(const Arg *arg)
841{
842 Client *c = NULL, *i;
843
844 if (!selmon->sel || (selmon->sel->isfullscreen && lockfullscreen))
845 return;
846 if (arg->i > 0) {
847 for (c = selmon->sel->next; c && !ISVISIBLE(c); c = c->next);
848 if (!c)
849 for (c = selmon->clients; c && !ISVISIBLE(c); c = c->next);
850 } else {
851 for (i = selmon->clients; i != selmon->sel; i = i->next)
852 if (ISVISIBLE(i))
853 c = i;
854 if (!c)
855 for (; i; i = i->next)
856 if (ISVISIBLE(i))
857 c = i;
858 }
859 if (c) {
860 focus(c);
861 restack(selmon);
862 }
863}
864
865Atom
866getatomprop(Client *c, Atom prop)
867{
868 int di;
869 unsigned long dl;
870 unsigned char *p = NULL;
871 Atom da, atom = None;
872
873 if (XGetWindowProperty(dpy, c->win, prop, 0L, sizeof atom, False, XA_ATOM,
874 &da, &di, &dl, &dl, &p) == Success && p) {
875 atom = *(Atom *)p;
876 XFree(p);
877 }
878 return atom;
879}
880
881int
882getrootptr(int *x, int *y)
883{
884 int di;
885 unsigned int dui;
886 Window dummy;
887
888 return XQueryPointer(dpy, root, &dummy, &dummy, x, y, &di, &di, &dui);
889}
890
891long
892getstate(Window w)
893{
894 int format;
895 long result = -1;
896 unsigned char *p = NULL;
897 unsigned long n, extra;
898 Atom real;
899
900 if (XGetWindowProperty(dpy, w, wmatom[WMState], 0L, 2L, False, wmatom[WMState],
901 &real, &format, &n, &extra, (unsigned char **)&p) != Success)
902 return -1;
903 if (n != 0)
904 result = *p;
905 XFree(p);
906 return result;
907}
908
909int
910gettextprop(Window w, Atom atom, char *text, unsigned int size)
911{
912 char **list = NULL;
913 int n;
914 XTextProperty name;
915
916 if (!text || size == 0)
917 return 0;
918 text[0] = '\0';
919 if (!XGetTextProperty(dpy, w, &name, atom) || !name.nitems)
920 return 0;
921 if (name.encoding == XA_STRING) {
922 strncpy(text, (char *)name.value, size - 1);
923 } else if (XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success && n > 0 && *list) {
924 strncpy(text, *list, size - 1);
925 XFreeStringList(list);
926 }
927 text[size - 1] = '\0';
928 XFree(name.value);
929 return 1;
930}
931
932void
933grabbuttons(Client *c, int focused)
934{
935 updatenumlockmask();
936 {
937 unsigned int i, j;
938 unsigned int modifiers[] = { 0, LockMask, numlockmask, numlockmask|LockMask };
939 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
940 if (!focused)
941 XGrabButton(dpy, AnyButton, AnyModifier, c->win, False,
942 BUTTONMASK, GrabModeSync, GrabModeSync, None, None);
943 for (i = 0; i < LENGTH(buttons); i++)
944 if (buttons[i].click == ClkClientWin)
945 for (j = 0; j < LENGTH(modifiers); j++)
946 XGrabButton(dpy, buttons[i].button,
947 buttons[i].mask | modifiers[j],
948 c->win, False, BUTTONMASK,
949 GrabModeAsync, GrabModeSync, None, None);
950 }
951}
952
953void
954grabkeys(void)
955{
956 updatenumlockmask();
957 {
958 unsigned int i, j;
959 unsigned int modifiers[] = { 0, LockMask, numlockmask, numlockmask|LockMask };
960 KeyCode code;
961
962 XUngrabKey(dpy, AnyKey, AnyModifier, root);
963 for (i = 0; i < LENGTH(keys); i++)
964 if ((code = XKeysymToKeycode(dpy, keys[i].keysym)))
965 for (j = 0; j < LENGTH(modifiers); j++)
966 XGrabKey(dpy, code, keys[i].mod | modifiers[j], root,
967 True, GrabModeAsync, GrabModeAsync);
968 }
969}
970
971void
972incnmaster(const Arg *arg)
973{
974 selmon->nmaster = MAX(selmon->nmaster + arg->i, 0);
975 arrange(selmon);
976}
977
978#ifdef XINERAMA
979static int
980isuniquegeom(XineramaScreenInfo *unique, size_t n, XineramaScreenInfo *info)
981{
982 while (n--)
983 if (unique[n].x_org == info->x_org && unique[n].y_org == info->y_org
984 && unique[n].width == info->width && unique[n].height == info->height)
985 return 0;
986 return 1;
987}
988#endif /* XINERAMA */
989
990void
991keypress(XEvent *e)
992{
993 unsigned int i;
994 KeySym keysym;
995 XKeyEvent *ev;
996
997 ev = &e->xkey;
998 keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
999 for (i = 0; i < LENGTH(keys); i++)
1000 if (keysym == keys[i].keysym
1001 && CLEANMASK(keys[i].mod) == CLEANMASK(ev->state)
1002 && keys[i].func)
1003 keys[i].func(&(keys[i].arg));
1004}
1005
1006void
1007killclient(const Arg *arg)
1008{
1009 if (!selmon->sel)
1010 return;
1011 if (!sendevent(selmon->sel, wmatom[WMDelete])) {
1012 XGrabServer(dpy);
1013 XSetErrorHandler(xerrordummy);
1014 XSetCloseDownMode(dpy, DestroyAll);
1015 XKillClient(dpy, selmon->sel->win);
1016 XSync(dpy, False);
1017 XSetErrorHandler(xerror);
1018 XUngrabServer(dpy);
1019 }
1020}
1021
1022void
1023manage(Window w, XWindowAttributes *wa)
1024{
1025 Client *c, *t = NULL;
1026 Window trans = None;
1027 XWindowChanges wc;
1028
1029 c = ecalloc(1, sizeof(Client));
1030 c->win = w;
1031 /* geometry */
1032 c->x = c->oldx = wa->x;
1033 c->y = c->oldy = wa->y;
1034 c->w = c->oldw = wa->width;
1035 c->h = c->oldh = wa->height;
1036 c->oldbw = wa->border_width;
1037
1038 updatetitle(c);
1039 if (XGetTransientForHint(dpy, w, &trans) && (t = wintoclient(trans))) {
1040 c->mon = t->mon;
1041 c->tags = t->tags;
1042 } else {
1043 c->mon = selmon;
1044 applyrules(c);
1045 }
1046
1047 if (c->x + WIDTH(c) > c->mon->wx + c->mon->ww)
1048 c->x = c->mon->wx + c->mon->ww - WIDTH(c);
1049 if (c->y + HEIGHT(c) > c->mon->wy + c->mon->wh)
1050 c->y = c->mon->wy + c->mon->wh - HEIGHT(c);
1051 c->x = MAX(c->x, c->mon->wx);
1052 c->y = MAX(c->y, c->mon->wy);
1053 c->bw = borderpx;
1054
1055 wc.border_width = c->bw;
1056 XConfigureWindow(dpy, w, CWBorderWidth, &wc);
1057 XSetWindowBorder(dpy, w, scheme[SchemeNorm][ColBorder].pixel);
1058 configure(c); /* propagates border_width, if size doesn't change */
1059 updatewindowtype(c);
1060 updatesizehints(c);
1061 updatewmhints(c);
1062 XSelectInput(dpy, w, EnterWindowMask|FocusChangeMask|PropertyChangeMask|StructureNotifyMask);
1063 grabbuttons(c, 0);
1064 if (!c->isfloating)
1065 c->isfloating = c->oldstate = trans != None || c->isfixed;
1066 if (c->isfloating)
1067 XRaiseWindow(dpy, c->win);
1068 attach(c);
1069 attachstack(c);
1070 XChangeProperty(dpy, root, netatom[NetClientList], XA_WINDOW, 32, PropModeAppend,
1071 (unsigned char *) &(c->win), 1);
1072 XMoveResizeWindow(dpy, c->win, c->x + 2 * sw, c->y, c->w, c->h); /* some windows require this */
1073 setclientstate(c, NormalState);
1074 if (c->mon == selmon)
1075 unfocus(selmon->sel, 0);
1076 c->mon->sel = c;
1077 arrange(c->mon);
1078 XMapWindow(dpy, c->win);
1079 focus(NULL);
1080}
1081
1082void
1083mappingnotify(XEvent *e)
1084{
1085 XMappingEvent *ev = &e->xmapping;
1086
1087 XRefreshKeyboardMapping(ev);
1088 if (ev->request == MappingKeyboard)
1089 grabkeys();
1090}
1091
1092void
1093maprequest(XEvent *e)
1094{
1095 static XWindowAttributes wa;
1096 XMapRequestEvent *ev = &e->xmaprequest;
1097
1098 if (!XGetWindowAttributes(dpy, ev->window, &wa) || wa.override_redirect)
1099 return;
1100 if (!wintoclient(ev->window))
1101 manage(ev->window, &wa);
1102}
1103
1104void
1105monocle(Monitor *m)
1106{
1107 unsigned int n = 0;
1108 Client *c;
1109
1110 for (c = m->clients; c; c = c->next)
1111 if (ISVISIBLE(c))
1112 n++;
1113 if (n > 0) /* override layout symbol */
1114 snprintf(m->ltsymbol, sizeof m->ltsymbol, "[%d]", n);
1115 for (c = nexttiled(m->clients); c; c = nexttiled(c->next))
1116 resize(c, m->wx, m->wy, m->ww - 2 * c->bw, m->wh - 2 * c->bw, 0);
1117}
1118
1119void
1120motionnotify(XEvent *e)
1121{
1122 static Monitor *mon = NULL;
1123 Monitor *m;
1124 XMotionEvent *ev = &e->xmotion;
1125
1126 if (ev->window != root)
1127 return;
1128 if ((m = recttomon(ev->x_root, ev->y_root, 1, 1)) != mon && mon) {
1129 unfocus(selmon->sel, 1);
1130 selmon = m;
1131 focus(NULL);
1132 }
1133 mon = m;
1134}
1135
1136void
1137movemouse(const Arg *arg)
1138{
1139 int x, y, ocx, ocy, nx, ny;
1140 Client *c;
1141 Monitor *m;
1142 XEvent ev;
1143 Time lasttime = 0;
1144
1145 if (!(c = selmon->sel))
1146 return;
1147 if (c->isfullscreen) /* no support moving fullscreen windows by mouse */
1148 return;
1149 restack(selmon);
1150 ocx = c->x;
1151 ocy = c->y;
1152 if (XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
1153 None, cursor[CurMove]->cursor, CurrentTime) != GrabSuccess)
1154 return;
1155 if (!getrootptr(&x, &y))
1156 return;
1157 do {
1158 XMaskEvent(dpy, MOUSEMASK|ExposureMask|SubstructureRedirectMask, &ev);
1159 switch(ev.type) {
1160 case ConfigureRequest:
1161 case Expose:
1162 case MapRequest:
1163 handler[ev.type](&ev);
1164 break;
1165 case MotionNotify:
1166 if ((ev.xmotion.time - lasttime) <= (1000 / 60))
1167 continue;
1168 lasttime = ev.xmotion.time;
1169
1170 nx = ocx + (ev.xmotion.x - x);
1171 ny = ocy + (ev.xmotion.y - y);
1172 if (abs(selmon->wx - nx) < snap)
1173 nx = selmon->wx;
1174 else if (abs((selmon->wx + selmon->ww) - (nx + WIDTH(c))) < snap)
1175 nx = selmon->wx + selmon->ww - WIDTH(c);
1176 if (abs(selmon->wy - ny) < snap)
1177 ny = selmon->wy;
1178 else if (abs((selmon->wy + selmon->wh) - (ny + HEIGHT(c))) < snap)
1179 ny = selmon->wy + selmon->wh - HEIGHT(c);
1180 if (!c->isfloating && selmon->lt[selmon->sellt]->arrange
1181 && (abs(nx - c->x) > snap || abs(ny - c->y) > snap))
1182 togglefloating(NULL);
1183 if (!selmon->lt[selmon->sellt]->arrange || c->isfloating)
1184 resize(c, nx, ny, c->w, c->h, 1);
1185 break;
1186 }
1187 } while (ev.type != ButtonRelease);
1188 XUngrabPointer(dpy, CurrentTime);
1189 if ((m = recttomon(c->x, c->y, c->w, c->h)) != selmon) {
1190 sendmon(c, m);
1191 selmon = m;
1192 focus(NULL);
1193 }
1194}
1195
1196Client *
1197nexttiled(Client *c)
1198{
1199 for (; c && (c->isfloating || !ISVISIBLE(c)); c = c->next);
1200 return c;
1201}
1202
1203void
1204pop(Client *c)
1205{
1206 detach(c);
1207 attach(c);
1208 focus(c);
1209 arrange(c->mon);
1210}
1211
1212void
1213propertynotify(XEvent *e)
1214{
1215 Client *c;
1216 Window trans;
1217 XPropertyEvent *ev = &e->xproperty;
1218
1219 if ((ev->window == root) && (ev->atom == XA_WM_NAME))
1220 updatestatus();
1221 else if (ev->state == PropertyDelete)
1222 return; /* ignore */
1223 else if ((c = wintoclient(ev->window))) {
1224 switch(ev->atom) {
1225 default: break;
1226 case XA_WM_TRANSIENT_FOR:
1227 if (!c->isfloating && (XGetTransientForHint(dpy, c->win, &trans)) &&
1228 (c->isfloating = (wintoclient(trans)) != NULL))
1229 arrange(c->mon);
1230 break;
1231 case XA_WM_NORMAL_HINTS:
1232 c->hintsvalid = 0;
1233 break;
1234 case XA_WM_HINTS:
1235 updatewmhints(c);
1236 drawbars();
1237 break;
1238 }
1239 if (ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
1240 updatetitle(c);
1241 if (c == c->mon->sel)
1242 drawbar(c->mon);
1243 }
1244 if (ev->atom == netatom[NetWMWindowType])
1245 updatewindowtype(c);
1246 }
1247}
1248
1249void
1250quit(const Arg *arg)
1251{
1252 running = 0;
1253}
1254
1255Monitor *
1256recttomon(int x, int y, int w, int h)
1257{
1258 Monitor *m, *r = selmon;
1259 int a, area = 0;
1260
1261 for (m = mons; m; m = m->next)
1262 if ((a = INTERSECT(x, y, w, h, m)) > area) {
1263 area = a;
1264 r = m;
1265 }
1266 return r;
1267}
1268
1269void
1270resize(Client *c, int x, int y, int w, int h, int interact)
1271{
1272 if (applysizehints(c, &x, &y, &w, &h, interact))
1273 resizeclient(c, x, y, w, h);
1274}
1275
1276void
1277resizeclient(Client *c, int x, int y, int w, int h)
1278{
1279 XWindowChanges wc;
1280
1281 c->oldx = c->x; c->x = wc.x = x;
1282 c->oldy = c->y; c->y = wc.y = y;
1283 c->oldw = c->w; c->w = wc.width = w;
1284 c->oldh = c->h; c->h = wc.height = h;
1285 wc.border_width = c->bw;
1286 XConfigureWindow(dpy, c->win, CWX|CWY|CWWidth|CWHeight|CWBorderWidth, &wc);
1287 configure(c);
1288 XSync(dpy, False);
1289}
1290
1291void
1292resizemouse(const Arg *arg)
1293{
1294 int ocx, ocy, nw, nh;
1295 Client *c;
1296 Monitor *m;
1297 XEvent ev;
1298 Time lasttime = 0;
1299
1300 if (!(c = selmon->sel))
1301 return;
1302 if (c->isfullscreen) /* no support resizing fullscreen windows by mouse */
1303 return;
1304 restack(selmon);
1305 ocx = c->x;
1306 ocy = c->y;
1307 if (XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
1308 None, cursor[CurResize]->cursor, CurrentTime) != GrabSuccess)
1309 return;
1310 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->bw - 1, c->h + c->bw - 1);
1311 do {
1312 XMaskEvent(dpy, MOUSEMASK|ExposureMask|SubstructureRedirectMask, &ev);
1313 switch(ev.type) {
1314 case ConfigureRequest:
1315 case Expose:
1316 case MapRequest:
1317 handler[ev.type](&ev);
1318 break;
1319 case MotionNotify:
1320 if ((ev.xmotion.time - lasttime) <= (1000 / 60))
1321 continue;
1322 lasttime = ev.xmotion.time;
1323
1324 nw = MAX(ev.xmotion.x - ocx - 2 * c->bw + 1, 1);
1325 nh = MAX(ev.xmotion.y - ocy - 2 * c->bw + 1, 1);
1326 if (c->mon->wx + nw >= selmon->wx && c->mon->wx + nw <= selmon->wx + selmon->ww
1327 && c->mon->wy + nh >= selmon->wy && c->mon->wy + nh <= selmon->wy + selmon->wh)
1328 {
1329 if (!c->isfloating && selmon->lt[selmon->sellt]->arrange
1330 && (abs(nw - c->w) > snap || abs(nh - c->h) > snap))
1331 togglefloating(NULL);
1332 }
1333 if (!selmon->lt[selmon->sellt]->arrange || c->isfloating)
1334 resize(c, c->x, c->y, nw, nh, 1);
1335 break;
1336 }
1337 } while (ev.type != ButtonRelease);
1338 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->bw - 1, c->h + c->bw - 1);
1339 XUngrabPointer(dpy, CurrentTime);
1340 while (XCheckMaskEvent(dpy, EnterWindowMask, &ev));
1341 if ((m = recttomon(c->x, c->y, c->w, c->h)) != selmon) {
1342 sendmon(c, m);
1343 selmon = m;
1344 focus(NULL);
1345 }
1346}
1347
1348void
1349restack(Monitor *m)
1350{
1351 Client *c;
1352 XEvent ev;
1353 XWindowChanges wc;
1354
1355 drawbar(m);
1356 if (!m->sel)
1357 return;
1358 if (m->sel->isfloating || !m->lt[m->sellt]->arrange)
1359 XRaiseWindow(dpy, m->sel->win);
1360 if (m->lt[m->sellt]->arrange) {
1361 wc.stack_mode = Below;
1362 wc.sibling = m->barwin;
1363 for (c = m->stack; c; c = c->snext)
1364 if (!c->isfloating && ISVISIBLE(c)) {
1365 XConfigureWindow(dpy, c->win, CWSibling|CWStackMode, &wc);
1366 wc.sibling = c->win;
1367 }
1368 }
1369 XSync(dpy, False);
1370 while (XCheckMaskEvent(dpy, EnterWindowMask, &ev));
1371}
1372
1373void
1374run(void)
1375{
1376 XEvent ev;
1377 /* main event loop */
1378 XSync(dpy, False);
1379 while (running && !XNextEvent(dpy, &ev))
1380 if (handler[ev.type])
1381 handler[ev.type](&ev); /* call handler */
1382}
1383
1384void
1385scan(void)
1386{
1387 unsigned int i, num;
1388 Window d1, d2, *wins = NULL;
1389 XWindowAttributes wa;
1390
1391 if (XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
1392 for (i = 0; i < num; i++) {
1393 if (!XGetWindowAttributes(dpy, wins[i], &wa)
1394 || wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
1395 continue;
1396 if (wa.map_state == IsViewable || getstate(wins[i]) == IconicState)
1397 manage(wins[i], &wa);
1398 }
1399 for (i = 0; i < num; i++) { /* now the transients */
1400 if (!XGetWindowAttributes(dpy, wins[i], &wa))
1401 continue;
1402 if (XGetTransientForHint(dpy, wins[i], &d1)
1403 && (wa.map_state == IsViewable || getstate(wins[i]) == IconicState))
1404 manage(wins[i], &wa);
1405 }
1406 if (wins)
1407 XFree(wins);
1408 }
1409}
1410
1411void
1412sendmon(Client *c, Monitor *m)
1413{
1414 if (c->mon == m)
1415 return;
1416 unfocus(c, 1);
1417 detach(c);
1418 detachstack(c);
1419 c->mon = m;
1420 c->tags = m->tagset[m->seltags]; /* assign tags of target monitor */
1421 attach(c);
1422 attachstack(c);
1423 focus(NULL);
1424 arrange(NULL);
1425}
1426
1427void
1428setclientstate(Client *c, long state)
1429{
1430 long data[] = { state, None };
1431
1432 XChangeProperty(dpy, c->win, wmatom[WMState], wmatom[WMState], 32,
1433 PropModeReplace, (unsigned char *)data, 2);
1434}
1435
1436int
1437sendevent(Client *c, Atom proto)
1438{
1439 int n;
1440 Atom *protocols;
1441 int exists = 0;
1442 XEvent ev;
1443
1444 if (XGetWMProtocols(dpy, c->win, &protocols, &n)) {
1445 while (!exists && n--)
1446 exists = protocols[n] == proto;
1447 XFree(protocols);
1448 }
1449 if (exists) {
1450 ev.type = ClientMessage;
1451 ev.xclient.window = c->win;
1452 ev.xclient.message_type = wmatom[WMProtocols];
1453 ev.xclient.format = 32;
1454 ev.xclient.data.l[0] = proto;
1455 ev.xclient.data.l[1] = CurrentTime;
1456 XSendEvent(dpy, c->win, False, NoEventMask, &ev);
1457 }
1458 return exists;
1459}
1460
1461void
1462setfocus(Client *c)
1463{
1464 if (!c->neverfocus) {
1465 XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
1466 XChangeProperty(dpy, root, netatom[NetActiveWindow],
1467 XA_WINDOW, 32, PropModeReplace,
1468 (unsigned char *) &(c->win), 1);
1469 }
1470 sendevent(c, wmatom[WMTakeFocus]);
1471}
1472
1473void
1474setfullscreen(Client *c, int fullscreen)
1475{
1476 if (fullscreen && !c->isfullscreen) {
1477 XChangeProperty(dpy, c->win, netatom[NetWMState], XA_ATOM, 32,
1478 PropModeReplace, (unsigned char*)&netatom[NetWMFullscreen], 1);
1479 c->isfullscreen = 1;
1480 c->oldstate = c->isfloating;
1481 c->oldbw = c->bw;
1482 c->bw = 0;
1483 c->isfloating = 1;
1484 resizeclient(c, c->mon->mx, c->mon->my, c->mon->mw, c->mon->mh);
1485 XRaiseWindow(dpy, c->win);
1486 } else if (!fullscreen && c->isfullscreen){
1487 XChangeProperty(dpy, c->win, netatom[NetWMState], XA_ATOM, 32,
1488 PropModeReplace, (unsigned char*)0, 0);
1489 c->isfullscreen = 0;
1490 c->isfloating = c->oldstate;
1491 c->bw = c->oldbw;
1492 c->x = c->oldx;
1493 c->y = c->oldy;
1494 c->w = c->oldw;
1495 c->h = c->oldh;
1496 resizeclient(c, c->x, c->y, c->w, c->h);
1497 arrange(c->mon);
1498 }
1499}
1500
1501void
1502setlayout(const Arg *arg)
1503{
1504 if (!arg || !arg->v || arg->v != selmon->lt[selmon->sellt])
1505 selmon->sellt ^= 1;
1506 if (arg && arg->v)
1507 selmon->lt[selmon->sellt] = (Layout *)arg->v;
1508 strncpy(selmon->ltsymbol, selmon->lt[selmon->sellt]->symbol, sizeof selmon->ltsymbol);
1509 if (selmon->sel)
1510 arrange(selmon);
1511 else
1512 drawbar(selmon);
1513}
1514
1515/* arg > 1.0 will set mfact absolutely */
1516void
1517setmfact(const Arg *arg)
1518{
1519 float f;
1520
1521 if (!arg || !selmon->lt[selmon->sellt]->arrange)
1522 return;
1523 f = arg->f < 1.0 ? arg->f + selmon->mfact : arg->f - 1.0;
1524 if (f < 0.05 || f > 0.95)
1525 return;
1526 selmon->mfact = f;
1527 arrange(selmon);
1528}
1529
1530void
1531setup(void)
1532{
1533 int i;
1534 XSetWindowAttributes wa;
1535 Atom utf8string;
1536
1537 /* clean up any zombies immediately */
1538 sigchld(0);
1539
1540 /* init screen */
1541 screen = DefaultScreen(dpy);
1542 sw = DisplayWidth(dpy, screen);
1543 sh = DisplayHeight(dpy, screen);
1544 root = RootWindow(dpy, screen);
1545 drw = drw_create(dpy, screen, root, sw, sh);
1546 if (!drw_fontset_create(drw, fonts, LENGTH(fonts)))
1547 die("no fonts could be loaded.");
1548 lrpad = drw->fonts->h;
1549 bh = drw->fonts->h + 2;
1550 updategeom();
1551 /* init atoms */
1552 utf8string = XInternAtom(dpy, "UTF8_STRING", False);
1553 wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
1554 wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
1555 wmatom[WMState] = XInternAtom(dpy, "WM_STATE", False);
1556 wmatom[WMTakeFocus] = XInternAtom(dpy, "WM_TAKE_FOCUS", False);
1557 netatom[NetActiveWindow] = XInternAtom(dpy, "_NET_ACTIVE_WINDOW", False);
1558 netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
1559 netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
1560 netatom[NetWMState] = XInternAtom(dpy, "_NET_WM_STATE", False);
1561 netatom[NetWMCheck] = XInternAtom(dpy, "_NET_SUPPORTING_WM_CHECK", False);
1562 netatom[NetWMFullscreen] = XInternAtom(dpy, "_NET_WM_STATE_FULLSCREEN", False);
1563 netatom[NetWMWindowType] = XInternAtom(dpy, "_NET_WM_WINDOW_TYPE", False);
1564 netatom[NetWMWindowTypeDialog] = XInternAtom(dpy, "_NET_WM_WINDOW_TYPE_DIALOG", False);
1565 netatom[NetClientList] = XInternAtom(dpy, "_NET_CLIENT_LIST", False);
1566 /* init cursors */
1567 cursor[CurNormal] = drw_cur_create(drw, XC_left_ptr);
1568 cursor[CurResize] = drw_cur_create(drw, XC_sizing);
1569 cursor[CurMove] = drw_cur_create(drw, XC_fleur);
1570 /* init appearance */
1571 scheme = ecalloc(LENGTH(colors), sizeof(Clr *));
1572 for (i = 0; i < LENGTH(colors); i++)
1573 scheme[i] = drw_scm_create(drw, colors[i], 3);
1574 /* init bars */
1575 updatebars();
1576 updatestatus();
1577 /* supporting window for NetWMCheck */
1578 wmcheckwin = XCreateSimpleWindow(dpy, root, 0, 0, 1, 1, 0, 0, 0);
1579 XChangeProperty(dpy, wmcheckwin, netatom[NetWMCheck], XA_WINDOW, 32,
1580 PropModeReplace, (unsigned char *) &wmcheckwin, 1);
1581 XChangeProperty(dpy, wmcheckwin, netatom[NetWMName], utf8string, 8,
1582 PropModeReplace, (unsigned char *) "dwm", 3);
1583 XChangeProperty(dpy, root, netatom[NetWMCheck], XA_WINDOW, 32,
1584 PropModeReplace, (unsigned char *) &wmcheckwin, 1);
1585 /* EWMH support per view */
1586 XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
1587 PropModeReplace, (unsigned char *) netatom, NetLast);
1588 XDeleteProperty(dpy, root, netatom[NetClientList]);
1589 /* select events */
1590 wa.cursor = cursor[CurNormal]->cursor;
1591 wa.event_mask = SubstructureRedirectMask|SubstructureNotifyMask
1592 |ButtonPressMask|PointerMotionMask|EnterWindowMask
1593 |LeaveWindowMask|StructureNotifyMask|PropertyChangeMask;
1594 XChangeWindowAttributes(dpy, root, CWEventMask|CWCursor, &wa);
1595 XSelectInput(dpy, root, wa.event_mask);
1596 grabkeys();
1597 focus(NULL);
1598}
1599
1600void
1601seturgent(Client *c, int urg)
1602{
1603 XWMHints *wmh;
1604
1605 c->isurgent = urg;
1606 if (!(wmh = XGetWMHints(dpy, c->win)))
1607 return;
1608 wmh->flags = urg ? (wmh->flags | XUrgencyHint) : (wmh->flags & ~XUrgencyHint);
1609 XSetWMHints(dpy, c->win, wmh);
1610 XFree(wmh);
1611}
1612
1613void
1614showhide(Client *c)
1615{
1616 if (!c)
1617 return;
1618 if (ISVISIBLE(c)) {
1619 /* show clients top down */
1620 XMoveWindow(dpy, c->win, c->x, c->y);
1621 if ((!c->mon->lt[c->mon->sellt]->arrange || c->isfloating) && !c->isfullscreen)
1622 resize(c, c->x, c->y, c->w, c->h, 0);
1623 showhide(c->snext);
1624 } else {
1625 /* hide clients bottom up */
1626 showhide(c->snext);
1627 XMoveWindow(dpy, c->win, WIDTH(c) * -2, c->y);
1628 }
1629}
1630
1631void
1632sigchld(int unused)
1633{
1634 if (signal(SIGCHLD, sigchld) == SIG_ERR)
1635 die("can't install SIGCHLD handler:");
1636 while (0 < waitpid(-1, NULL, WNOHANG));
1637}
1638
1639void
1640spawn(const Arg *arg)
1641{
1642 if (fork() == 0) {
1643 if (dpy)
1644 close(ConnectionNumber(dpy));
1645 setsid();
1646 execvp(((char **)arg->v)[0], (char **)arg->v);
1647 die("dwm: execvp '%s' failed:", ((char **)arg->v)[0]);
1648 }
1649}
1650
1651void
1652tag(const Arg *arg)
1653{
1654 if (selmon->sel && arg->ui & TAGMASK) {
1655 selmon->sel->tags = arg->ui & TAGMASK;
1656 focus(NULL);
1657 arrange(selmon);
1658 }
1659}
1660
1661void
1662tagmon(const Arg *arg)
1663{
1664 if (!selmon->sel || !mons->next)
1665 return;
1666 sendmon(selmon->sel, dirtomon(arg->i));
1667}
1668
1669void
1670tile(Monitor *m)
1671{
1672 unsigned int i, n, h, mw, my, ty;
1673 Client *c;
1674
1675 for (n = 0, c = nexttiled(m->clients); c; c = nexttiled(c->next), n++);
1676 if (n == 0)
1677 return;
1678
1679 if (n > m->nmaster)
1680 mw = m->nmaster ? m->ww * m->mfact : 0;
1681 else
1682 mw = m->ww;
1683 for (i = my = ty = 0, c = nexttiled(m->clients); c; c = nexttiled(c->next), i++)
1684 if (i < m->nmaster) {
1685 h = (m->wh - my) / (MIN(n, m->nmaster) - i);
1686 resize(c, m->wx, m->wy + my, mw - (2*c->bw), h - (2*c->bw), 0);
1687 if (my + HEIGHT(c) < m->wh)
1688 my += HEIGHT(c);
1689 } else {
1690 h = (m->wh - ty) / (n - i);
1691 resize(c, m->wx + mw, m->wy + ty, m->ww - mw - (2*c->bw), h - (2*c->bw), 0);
1692 if (ty + HEIGHT(c) < m->wh)
1693 ty += HEIGHT(c);
1694 }
1695}
1696
1697void
1698togglebar(const Arg *arg)
1699{
1700 selmon->showbar = !selmon->showbar;
1701 updatebarpos(selmon);
1702 XMoveResizeWindow(dpy, selmon->barwin, selmon->wx, selmon->by, selmon->ww, bh);
1703 arrange(selmon);
1704}
1705
1706void
1707togglefloating(const Arg *arg)
1708{
1709 if (!selmon->sel)
1710 return;
1711 if (selmon->sel->isfullscreen) /* no support for fullscreen windows */
1712 return;
1713 selmon->sel->isfloating = !selmon->sel->isfloating || selmon->sel->isfixed;
1714 if (selmon->sel->isfloating)
1715 resize(selmon->sel, selmon->sel->x, selmon->sel->y,
1716 selmon->sel->w, selmon->sel->h, 0);
1717 arrange(selmon);
1718}
1719
1720void
1721toggletag(const Arg *arg)
1722{
1723 unsigned int newtags;
1724
1725 if (!selmon->sel)
1726 return;
1727 newtags = selmon->sel->tags ^ (arg->ui & TAGMASK);
1728 if (newtags) {
1729 selmon->sel->tags = newtags;
1730 focus(NULL);
1731 arrange(selmon);
1732 }
1733}
1734
1735void
1736toggleview(const Arg *arg)
1737{
1738 unsigned int newtagset = selmon->tagset[selmon->seltags] ^ (arg->ui & TAGMASK);
1739
1740 if (newtagset) {
1741 selmon->tagset[selmon->seltags] = newtagset;
1742 focus(NULL);
1743 arrange(selmon);
1744 }
1745}
1746
1747void
1748unfocus(Client *c, int setfocus)
1749{
1750 if (!c)
1751 return;
1752 grabbuttons(c, 0);
1753 XSetWindowBorder(dpy, c->win, scheme[SchemeNorm][ColBorder].pixel);
1754 if (setfocus) {
1755 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
1756 XDeleteProperty(dpy, root, netatom[NetActiveWindow]);
1757 }
1758}
1759
1760void
1761unmanage(Client *c, int destroyed)
1762{
1763 Monitor *m = c->mon;
1764 XWindowChanges wc;
1765
1766 detach(c);
1767 detachstack(c);
1768 if (!destroyed) {
1769 wc.border_width = c->oldbw;
1770 XGrabServer(dpy); /* avoid race conditions */
1771 XSetErrorHandler(xerrordummy);
1772 XSelectInput(dpy, c->win, NoEventMask);
1773 XConfigureWindow(dpy, c->win, CWBorderWidth, &wc); /* restore border */
1774 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
1775 setclientstate(c, WithdrawnState);
1776 XSync(dpy, False);
1777 XSetErrorHandler(xerror);
1778 XUngrabServer(dpy);
1779 }
1780 free(c);
1781 focus(NULL);
1782 updateclientlist();
1783 arrange(m);
1784}
1785
1786void
1787unmapnotify(XEvent *e)
1788{
1789 Client *c;
1790 XUnmapEvent *ev = &e->xunmap;
1791
1792 if ((c = wintoclient(ev->window))) {
1793 if (ev->send_event)
1794 setclientstate(c, WithdrawnState);
1795 else
1796 unmanage(c, 0);
1797 }
1798}
1799
1800void
1801updatebars(void)
1802{
1803 Monitor *m;
1804 XSetWindowAttributes wa = {
1805 .override_redirect = True,
1806 .background_pixmap = ParentRelative,
1807 .event_mask = ButtonPressMask|ExposureMask
1808 };
1809 XClassHint ch = {"dwm", "dwm"};
1810 for (m = mons; m; m = m->next) {
1811 if (m->barwin)
1812 continue;
1813 m->barwin = XCreateWindow(dpy, root, m->wx, m->by, m->ww, bh, 0, DefaultDepth(dpy, screen),
1814 CopyFromParent, DefaultVisual(dpy, screen),
1815 CWOverrideRedirect|CWBackPixmap|CWEventMask, &wa);
1816 XDefineCursor(dpy, m->barwin, cursor[CurNormal]->cursor);
1817 XMapRaised(dpy, m->barwin);
1818 XSetClassHint(dpy, m->barwin, &ch);
1819 }
1820}
1821
1822void
1823updatebarpos(Monitor *m)
1824{
1825 m->wy = m->my;
1826 m->wh = m->mh;
1827 if (m->showbar) {
1828 m->wh -= bh;
1829 m->by = m->topbar ? m->wy : m->wy + m->wh;
1830 m->wy = m->topbar ? m->wy + bh : m->wy;
1831 } else
1832 m->by = -bh;
1833}
1834
1835void
1836updateclientlist()
1837{
1838 Client *c;
1839 Monitor *m;
1840
1841 XDeleteProperty(dpy, root, netatom[NetClientList]);
1842 for (m = mons; m; m = m->next)
1843 for (c = m->clients; c; c = c->next)
1844 XChangeProperty(dpy, root, netatom[NetClientList],
1845 XA_WINDOW, 32, PropModeAppend,
1846 (unsigned char *) &(c->win), 1);
1847}
1848
1849int
1850updategeom(void)
1851{
1852 int dirty = 0;
1853
1854#ifdef XINERAMA
1855 if (XineramaIsActive(dpy)) {
1856 int i, j, n, nn;
1857 Client *c;
1858 Monitor *m;
1859 XineramaScreenInfo *info = XineramaQueryScreens(dpy, &nn);
1860 XineramaScreenInfo *unique = NULL;
1861
1862 for (n = 0, m = mons; m; m = m->next, n++);
1863 /* only consider unique geometries as separate screens */
1864 unique = ecalloc(nn, sizeof(XineramaScreenInfo));
1865 for (i = 0, j = 0; i < nn; i++)
1866 if (isuniquegeom(unique, j, &info[i]))
1867 memcpy(&unique[j++], &info[i], sizeof(XineramaScreenInfo));
1868 XFree(info);
1869 nn = j;
1870
1871 /* new monitors if nn > n */
1872 for (i = n; i < nn; i++) {
1873 for (m = mons; m && m->next; m = m->next);
1874 if (m)
1875 m->next = createmon();
1876 else
1877 mons = createmon();
1878 }
1879 for (i = 0, m = mons; i < nn && m; m = m->next, i++)
1880 if (i >= n
1881 || unique[i].x_org != m->mx || unique[i].y_org != m->my
1882 || unique[i].width != m->mw || unique[i].height != m->mh)
1883 {
1884 dirty = 1;
1885 m->num = i;
1886 m->mx = m->wx = unique[i].x_org;
1887 m->my = m->wy = unique[i].y_org;
1888 m->mw = m->ww = unique[i].width;
1889 m->mh = m->wh = unique[i].height;
1890 updatebarpos(m);
1891 }
1892 /* removed monitors if n > nn */
1893 for (i = nn; i < n; i++) {
1894 for (m = mons; m && m->next; m = m->next);
1895 while ((c = m->clients)) {
1896 dirty = 1;
1897 m->clients = c->next;
1898 detachstack(c);
1899 c->mon = mons;
1900 attach(c);
1901 attachstack(c);
1902 }
1903 if (m == selmon)
1904 selmon = mons;
1905 cleanupmon(m);
1906 }
1907 free(unique);
1908 } else
1909#endif /* XINERAMA */
1910 { /* default monitor setup */
1911 if (!mons)
1912 mons = createmon();
1913 if (mons->mw != sw || mons->mh != sh) {
1914 dirty = 1;
1915 mons->mw = mons->ww = sw;
1916 mons->mh = mons->wh = sh;
1917 updatebarpos(mons);
1918 }
1919 }
1920 if (dirty) {
1921 selmon = mons;
1922 selmon = wintomon(root);
1923 }
1924 return dirty;
1925}
1926
1927void
1928updatenumlockmask(void)
1929{
1930 unsigned int i, j;
1931 XModifierKeymap *modmap;
1932
1933 numlockmask = 0;
1934 modmap = XGetModifierMapping(dpy);
1935 for (i = 0; i < 8; i++)
1936 for (j = 0; j < modmap->max_keypermod; j++)
1937 if (modmap->modifiermap[i * modmap->max_keypermod + j]
1938 == XKeysymToKeycode(dpy, XK_Num_Lock))
1939 numlockmask = (1 << i);
1940 XFreeModifiermap(modmap);
1941}
1942
1943void
1944updatesizehints(Client *c)
1945{
1946 long msize;
1947 XSizeHints size;
1948
1949 if (!XGetWMNormalHints(dpy, c->win, &size, &msize))
1950 /* size is uninitialized, ensure that size.flags aren't used */
1951 size.flags = PSize;
1952 if (size.flags & PBaseSize) {
1953 c->basew = size.base_width;
1954 c->baseh = size.base_height;
1955 } else if (size.flags & PMinSize) {
1956 c->basew = size.min_width;
1957 c->baseh = size.min_height;
1958 } else
1959 c->basew = c->baseh = 0;
1960 if (size.flags & PResizeInc) {
1961 c->incw = size.width_inc;
1962 c->inch = size.height_inc;
1963 } else
1964 c->incw = c->inch = 0;
1965 if (size.flags & PMaxSize) {
1966 c->maxw = size.max_width;
1967 c->maxh = size.max_height;
1968 } else
1969 c->maxw = c->maxh = 0;
1970 if (size.flags & PMinSize) {
1971 c->minw = size.min_width;
1972 c->minh = size.min_height;
1973 } else if (size.flags & PBaseSize) {
1974 c->minw = size.base_width;
1975 c->minh = size.base_height;
1976 } else
1977 c->minw = c->minh = 0;
1978 if (size.flags & PAspect) {
1979 c->mina = (float)size.min_aspect.y / size.min_aspect.x;
1980 c->maxa = (float)size.max_aspect.x / size.max_aspect.y;
1981 } else
1982 c->maxa = c->mina = 0.0;
1983 c->isfixed = (c->maxw && c->maxh && c->maxw == c->minw && c->maxh == c->minh);
1984 c->hintsvalid = 1;
1985}
1986
1987void
1988updatestatus(void)
1989{
1990 if (!gettextprop(root, XA_WM_NAME, stext, sizeof(stext)))
1991 strcpy(stext, "dwm-"VERSION);
1992 drawbar(selmon);
1993}
1994
1995void
1996updatetitle(Client *c)
1997{
1998 if (!gettextprop(c->win, netatom[NetWMName], c->name, sizeof c->name))
1999 gettextprop(c->win, XA_WM_NAME, c->name, sizeof c->name);
2000 if (c->name[0] == '\0') /* hack to mark broken clients */
2001 strcpy(c->name, broken);
2002}
2003
2004void
2005updatewindowtype(Client *c)
2006{
2007 Atom state = getatomprop(c, netatom[NetWMState]);
2008 Atom wtype = getatomprop(c, netatom[NetWMWindowType]);
2009
2010 if (state == netatom[NetWMFullscreen])
2011 setfullscreen(c, 1);
2012 if (wtype == netatom[NetWMWindowTypeDialog])
2013 c->isfloating = 1;
2014}
2015
2016void
2017updatewmhints(Client *c)
2018{
2019 XWMHints *wmh;
2020
2021 if ((wmh = XGetWMHints(dpy, c->win))) {
2022 if (c == selmon->sel && wmh->flags & XUrgencyHint) {
2023 wmh->flags &= ~XUrgencyHint;
2024 XSetWMHints(dpy, c->win, wmh);
2025 } else
2026 c->isurgent = (wmh->flags & XUrgencyHint) ? 1 : 0;
2027 if (wmh->flags & InputHint)
2028 c->neverfocus = !wmh->input;
2029 else
2030 c->neverfocus = 0;
2031 XFree(wmh);
2032 }
2033}
2034
2035void
2036view(const Arg *arg)
2037{
2038 if ((arg->ui & TAGMASK) == selmon->tagset[selmon->seltags])
2039 return;
2040 selmon->seltags ^= 1; /* toggle sel tagset */
2041 if (arg->ui & TAGMASK)
2042 selmon->tagset[selmon->seltags] = arg->ui & TAGMASK;
2043 focus(NULL);
2044 arrange(selmon);
2045}
2046
2047Client *
2048wintoclient(Window w)
2049{
2050 Client *c;
2051 Monitor *m;
2052
2053 for (m = mons; m; m = m->next)
2054 for (c = m->clients; c; c = c->next)
2055 if (c->win == w)
2056 return c;
2057 return NULL;
2058}
2059
2060Monitor *
2061wintomon(Window w)
2062{
2063 int x, y;
2064 Client *c;
2065 Monitor *m;
2066
2067 if (w == root && getrootptr(&x, &y))
2068 return recttomon(x, y, 1, 1);
2069 for (m = mons; m; m = m->next)
2070 if (w == m->barwin)
2071 return m;
2072 if ((c = wintoclient(w)))
2073 return c->mon;
2074 return selmon;
2075}
2076
2077/* There's no way to check accesses to destroyed windows, thus those cases are
2078 * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
2079 * default error handler, which may call exit. */
2080int
2081xerror(Display *dpy, XErrorEvent *ee)
2082{
2083 if (ee->error_code == BadWindow
2084 || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
2085 || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
2086 || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
2087 || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
2088 || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
2089 || (ee->request_code == X_GrabButton && ee->error_code == BadAccess)
2090 || (ee->request_code == X_GrabKey && ee->error_code == BadAccess)
2091 || (ee->request_code == X_CopyArea && ee->error_code == BadDrawable))
2092 return 0;
2093 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
2094 ee->request_code, ee->error_code);
2095 return xerrorxlib(dpy, ee); /* may call exit */
2096}
2097
2098int
2099xerrordummy(Display *dpy, XErrorEvent *ee)
2100{
2101 return 0;
2102}
2103
2104/* Startup Error handler to check if another window manager
2105 * is already running. */
2106int
2107xerrorstart(Display *dpy, XErrorEvent *ee)
2108{
2109 die("dwm: another window manager is already running");
2110 return -1;
2111}
2112
2113void
2114zoom(const Arg *arg)
2115{
2116 Client *c = selmon->sel;
2117
2118 if (!selmon->lt[selmon->sellt]->arrange || !c || c->isfloating)
2119 return;
2120 if (c == nexttiled(selmon->clients) && !(c = nexttiled(c->next)))
2121 return;
2122 pop(c);
2123}
2124
2125int
2126main(int argc, char *argv[])
2127{
2128 if (argc == 2 && !strcmp("-v", argv[1]))
2129 die("dwm-"VERSION);
2130 else if (argc != 1)
2131 die("usage: dwm [-v]");
2132 if (!setlocale(LC_CTYPE, "") || !XSupportsLocale())
2133 fputs("warning: no locale support\n", stderr);
2134 if (!(dpy = XOpenDisplay(NULL)))
2135 die("dwm: cannot open display");
2136 checkotherwm();
2137 setup();
2138#ifdef __OpenBSD__
2139 if (pledge("stdio rpath proc exec", NULL) == -1)
2140 die("pledge");
2141#endif /* __OpenBSD__ */
2142 scan();
2143 run();
2144 cleanup();
2145 XCloseDisplay(dpy);
2146 return EXIT_SUCCESS;
2147}
Personal fork of window manager 'dwm'. See README for modifications.