1 /* See LICENSE file for copyright and license details.
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.
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
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
19 * Keys and tagging rules are organized as arrays and defined in config.h.
21 * To understand everything else, start reading main().
31 #include <sys/types.h>
33 #include <X11/cursorfont.h>
34 #include <X11/keysym.h>
35 #include <X11/Xatom.h>
37 #include <X11/Xproto.h>
38 #include <X11/Xutil.h>
40 #include <X11/extensions/Xinerama.h>
44 #define BUTTONMASK (ButtonPressMask|ButtonReleaseMask)
45 #define CLEANMASK(mask) (mask & ~(numlockmask|LockMask))
46 #define INRECT(X,Y,RX,RY,RW,RH) ((X) >= (RX) && (X) < (RX) + (RW) && (Y) >= (RY) && (Y) < (RY) + (RH))
47 #define ISVISIBLE(C) ((C->tags & C->mon->tagset[C->mon->seltags]))
48 #define LENGTH(X) (sizeof X / sizeof X[0])
49 #define MAX(A, B) ((A) > (B) ? (A) : (B))
50 #define MIN(A, B) ((A) < (B) ? (A) : (B))
51 #define MOUSEMASK (BUTTONMASK|PointerMotionMask)
52 #define WIDTH(X) ((X)->w + 2 * (X)->bw)
53 #define HEIGHT(X) ((X)->h + 2 * (X)->bw)
54 #define TAGMASK ((int)((1LL << LENGTH(tags)) - 1))
55 #define TEXTW(X) (textnw(X, strlen(X)) + dc.font.height)
58 enum { CurNormal, CurResize, CurMove, CurLast }; /* cursor */
59 enum { ColBorder, ColFG, ColBG, ColLast }; /* color */
60 enum { NetSupported, NetWMName, NetLast }; /* EWMH atoms */
61 enum { WMProtocols, WMDelete, WMState, WMLast }; /* default atoms */
62 enum { ClkTagBar, ClkLtSymbol, ClkStatusText, ClkWinTitle,
63 ClkClientWin, ClkRootWin, ClkLast }; /* clicks */
76 void (*func)(const Arg *arg);
80 typedef struct Monitor Monitor;
81 typedef struct Client Client;
86 int basew, baseh, incw, inch, maxw, maxh, minw, minh;
89 Bool isfixed, isfloating, isurgent;
98 unsigned long norm[ColLast];
99 unsigned long sel[ColLast];
109 } DC; /* draw context */
114 void (*func)(const Arg *);
120 void (*arrange)(Monitor *);
126 int by; /* bar geometry */
127 int mx, my, mw, mh; /* screen size */
128 int wx, wy, ww, wh; /* window area */
129 unsigned int seltags;
131 unsigned int tagset[2];
144 const char *instance;
151 /* function declarations */
152 static void applyrules(Client *c);
153 static Bool applysizehints(Client *c, int *x, int *y, int *w, int *h, Bool interact);
154 static void arrange(void);
155 static void attach(Client *c);
156 static void attachstack(Client *c);
157 static void buttonpress(XEvent *e);
158 static void checkotherwm(void);
159 static void cleanup(void);
160 static void cleanupmons(void);
161 static void clearurgent(Client *c);
162 static void configure(Client *c);
163 static void configurenotify(XEvent *e);
164 static void configurerequest(XEvent *e);
165 static void destroynotify(XEvent *e);
166 static void detach(Client *c);
167 static void detachstack(Client *c);
168 static void die(const char *errstr, ...);
169 static Monitor *dirtomon(int dir);
170 static void drawbar(Monitor *m);
171 static void drawbars(void);
172 static void drawsquare(Bool filled, Bool empty, Bool invert, unsigned long col[ColLast]);
173 static void drawtext(const char *text, unsigned long col[ColLast], Bool invert);
174 static void enternotify(XEvent *e);
175 static void expose(XEvent *e);
176 static void focus(Client *c);
177 static void focusin(XEvent *e);
178 static void focusmon(const Arg *arg);
179 static void focusstack(const Arg *arg);
180 static unsigned long getcolor(const char *colstr);
181 static Bool getrootptr(int *x, int *y);
182 static long getstate(Window w);
183 static Bool gettextprop(Window w, Atom atom, char *text, unsigned int size);
184 static void grabbuttons(Client *c, Bool focused);
185 static void grabkeys(void);
186 static void initfont(const char *fontstr);
187 static Bool isprotodel(Client *c);
188 static void keypress(XEvent *e);
189 static void killclient(const Arg *arg);
190 static void manage(Window w, XWindowAttributes *wa);
191 static void mappingnotify(XEvent *e);
192 static void maprequest(XEvent *e);
193 static void monocle(Monitor *m);
194 static void movemouse(const Arg *arg);
195 static Client *nexttiled(Client *c);
196 static Monitor *ptrtomon(int x, int y);
197 static void propertynotify(XEvent *e);
198 static void quit(const Arg *arg);
199 static void resize(Client *c, int x, int y, int w, int h, Bool interact);
200 static void resizemouse(const Arg *arg);
201 static void restack(Monitor *m);
202 static void run(void);
203 static void scan(void);
204 static void sendmon(Client *c, Monitor *m);
205 static void setclientstate(Client *c, long state);
206 static void setlayout(const Arg *arg);
207 static void setmfact(const Arg *arg);
208 static void setup(void);
209 static void showhide(Client *c);
210 static void sigchld(int signal);
211 static void spawn(const Arg *arg);
212 static void tag(const Arg *arg);
213 static void tagmon(const Arg *arg);
214 static int textnw(const char *text, unsigned int len);
215 static void tile(Monitor *);
216 static void togglebar(const Arg *arg);
217 static void togglefloating(const Arg *arg);
218 static void toggletag(const Arg *arg);
219 static void toggleview(const Arg *arg);
220 static void unfocus(Client *c);
221 static void unmanage(Client *c);
222 static void unmapnotify(XEvent *e);
223 static void updategeom(void);
224 static void updatebarpos(Monitor *m);
225 static void updatebars(void);
226 static void updatenumlockmask(void);
227 static void updatesizehints(Client *c);
228 static void updatestatus(void);
229 static void updatetitle(Client *c);
230 static void updatewmhints(Client *c);
231 static void view(const Arg *arg);
232 static Client *wintoclient(Window w);
233 static Monitor *wintomon(Window w);
234 static int xerror(Display *dpy, XErrorEvent *ee);
235 static int xerrordummy(Display *dpy, XErrorEvent *ee);
236 static int xerrorstart(Display *dpy, XErrorEvent *ee);
237 static void zoom(const Arg *arg);
240 static char stext[256], ntext[8];
242 static int sw, sh; /* X display screen geometry width, height */
243 static int bh, blw = 0; /* bar geometry */
244 static int (*xerrorxlib)(Display *, XErrorEvent *);
245 static unsigned int numlockmask = 0;
246 static void (*handler[LASTEvent]) (XEvent *) = {
247 [ButtonPress] = buttonpress,
248 [ConfigureRequest] = configurerequest,
249 [ConfigureNotify] = configurenotify,
250 [DestroyNotify] = destroynotify,
251 [EnterNotify] = enternotify,
254 [KeyPress] = keypress,
255 [MappingNotify] = mappingnotify,
256 [MapRequest] = maprequest,
257 [PropertyNotify] = propertynotify,
258 [UnmapNotify] = unmapnotify
260 static Atom wmatom[WMLast], netatom[NetLast];
262 static Bool running = True;
263 static Cursor cursor[CurLast];
266 static Monitor *mons = NULL, *selmon = NULL;
269 /* configuration, allows nested code to access above variables */
272 /* compile-time check if all tags fit into an unsigned int bit array. */
273 struct NumTags { char limitexceeded[sizeof(unsigned int) * 8 < LENGTH(tags) ? -1 : 1]; };
275 /* function implementations */
277 applyrules(Client *c) {
281 XClassHint ch = { 0 };
284 c->isfloating = c->tags = 0;
285 if(XGetClassHint(dpy, c->win, &ch)) {
286 for(i = 0; i < LENGTH(rules); i++) {
288 if((!r->title || strstr(c->name, r->title))
289 && (!r->class || (ch.res_class && strstr(ch.res_class, r->class)))
290 && (!r->instance || (ch.res_name && strstr(ch.res_name, r->instance))))
292 c->isfloating = r->isfloating;
294 for(m = mons; m && m->num != r->monitor; m = m->next);
304 c->tags = c->tags & TAGMASK ? c->tags & TAGMASK : c->mon->tagset[c->mon->seltags];
308 applysizehints(Client *c, int *x, int *y, int *w, int *h, Bool interact) {
312 /* set minimum possible */
320 if(*x + *w + 2 * c->bw < 0)
322 if(*y + *h + 2 * c->bw < 0)
326 if(*x > m->mx + m->mw)
327 *x = m->mx + m->mw - WIDTH(c);
328 if(*y > m->my + m->mh)
329 *y = m->my + m->mh - HEIGHT(c);
330 if(*x + *w + 2 * c->bw < m->mx)
332 if(*y + *h + 2 * c->bw < m->my)
339 if(resizehints || c->isfloating) {
340 /* see last two sentences in ICCCM 4.1.2.3 */
341 baseismin = c->basew == c->minw && c->baseh == c->minh;
342 if(!baseismin) { /* temporarily remove base dimensions */
346 /* adjust for aspect limits */
347 if(c->mina > 0 && c->maxa > 0) {
348 if(c->maxa < (float)*w / *h)
350 else if(c->mina < (float)*h / *w)
353 if(baseismin) { /* increment calculation requires this */
357 /* adjust for increment value */
362 /* restore base dimensions */
365 *w = MAX(*w, c->minw);
366 *h = MAX(*h, c->minh);
368 *w = MIN(*w, c->maxw);
370 *h = MIN(*h, c->maxh);
372 return *x != c->x || *y != c->y || *w != c->w || *h != c->h;
379 /* optimise two loops into one, check focus(NULL) */
380 for(m = mons; m; m = m->next)
383 for(m = mons; m; m = m->next) {
384 if(m->lt[m->sellt]->arrange)
385 m->lt[m->sellt]->arrange(m);
392 c->next = c->mon->clients;
397 attachstack(Client *c) {
398 c->snext = c->mon->stack;
403 buttonpress(XEvent *e) {
404 unsigned int i, x, click;
408 XButtonPressedEvent *ev = &e->xbutton;
411 /* focus monitor if necessary */
412 if((m = wintomon(ev->window)) && m != selmon) {
413 unfocus(selmon->sel);
417 if(ev->window == selmon->barwin) {
421 while(ev->x >= x && ++i < LENGTH(tags));
422 if(i < LENGTH(tags)) {
426 else if(ev->x < x + blw)
428 else if(ev->x > selmon->wx + selmon->ww - TEXTW(stext))
429 click = ClkStatusText;
433 else if((c = wintoclient(ev->window))) {
435 click = ClkClientWin;
437 for(i = 0; i < LENGTH(buttons); i++)
438 if(click == buttons[i].click && buttons[i].func && buttons[i].button == ev->button
439 && CLEANMASK(buttons[i].mask) == CLEANMASK(ev->state))
440 buttons[i].func(click == ClkTagBar && buttons[i].arg.i == 0 ? &arg : &buttons[i].arg);
446 xerrorxlib = XSetErrorHandler(xerrorstart);
447 /* this causes an error if some other window manager is running */
448 XSelectInput(dpy, DefaultRootWindow(dpy), SubstructureRedirectMask);
451 die("dwm: another window manager is already running\n");
452 XSetErrorHandler(xerror);
459 Layout foo = { "", NULL };
463 selmon->lt[selmon->sellt] = &foo;
464 for(m = mons; m; m = m->next)
468 XFreeFontSet(dpy, dc.font.set);
470 XFreeFont(dpy, dc.font.xfont);
471 XUngrabKey(dpy, AnyKey, AnyModifier, root);
472 XFreePixmap(dpy, dc.drawable);
474 XFreeCursor(dpy, cursor[CurNormal]);
475 XFreeCursor(dpy, cursor[CurResize]);
476 XFreeCursor(dpy, cursor[CurMove]);
479 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
488 XUnmapWindow(dpy, mons->barwin);
489 XDestroyWindow(dpy, mons->barwin);
496 clearurgent(Client *c) {
500 if(!(wmh = XGetWMHints(dpy, c->win)))
502 wmh->flags &= ~XUrgencyHint;
503 XSetWMHints(dpy, c->win, wmh);
508 configure(Client *c) {
511 ce.type = ConfigureNotify;
519 ce.border_width = c->bw;
521 ce.override_redirect = False;
522 XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&ce);
526 configurenotify(XEvent *e) {
528 XConfigureEvent *ev = &e->xconfigure;
530 if(ev->window == root && (ev->width != sw || ev->height != sh)) {
535 XFreePixmap(dpy, dc.drawable);
536 dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
538 for(m = mons; m; m = m->next)
539 XMoveResizeWindow(dpy, m->barwin, m->wx, m->by, m->ww, bh);
545 configurerequest(XEvent *e) {
548 XConfigureRequestEvent *ev = &e->xconfigurerequest;
551 if((c = wintoclient(ev->window))) {
552 if(ev->value_mask & CWBorderWidth)
553 c->bw = ev->border_width;
554 else if(c->isfloating || !selmon->lt[selmon->sellt]->arrange) {
556 if(ev->value_mask & CWX)
557 c->x = m->mx + ev->x;
558 if(ev->value_mask & CWY)
559 c->y = m->my + ev->y;
560 if(ev->value_mask & CWWidth)
562 if(ev->value_mask & CWHeight)
564 if((c->x - m->mx + c->w) > m->mw && c->isfloating)
565 c->x = m->mx + (m->mw / 2 - c->w / 2); /* center in x direction */
566 if((c->y - m->my + c->h) > m->mh && c->isfloating)
567 c->y = m->my + (m->mh / 2 - c->h / 2); /* center in y direction */
568 if((ev->value_mask & (CWX|CWY)) && !(ev->value_mask & (CWWidth|CWHeight)))
571 XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
579 wc.width = ev->width;
580 wc.height = ev->height;
581 wc.border_width = ev->border_width;
582 wc.sibling = ev->above;
583 wc.stack_mode = ev->detail;
584 XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
590 destroynotify(XEvent *e) {
592 XDestroyWindowEvent *ev = &e->xdestroywindow;
594 if((c = wintoclient(ev->window)))
602 for(tc = &c->mon->clients; *tc && *tc != c; tc = &(*tc)->next);
607 detachstack(Client *c) {
610 for(tc = &c->mon->stack; *tc && *tc != c; tc = &(*tc)->snext);
613 if(c == c->mon->sel) {
614 for(t = c->mon->stack; t && !ISVISIBLE(t); t = t->snext);
620 die(const char *errstr, ...) {
623 va_start(ap, errstr);
624 vfprintf(stderr, errstr, ap);
634 if(!(m = selmon->next))
639 for(m = mons; m->next; m = m->next);
641 for(m = mons; m->next != selmon; m = m->next);
647 drawbar(Monitor *m) {
649 unsigned int i, n = 0, occ = 0, urg = 0;
653 for(c = m->clients; c; c = c->next) {
661 for(i = 0; i < LENGTH(tags); i++) {
662 dc.w = TEXTW(tags[i]);
663 col = m->tagset[m->seltags] & 1 << i ? dc.sel : dc.norm;
664 drawtext(tags[i], col, urg & 1 << i);
665 drawsquare(m == selmon && selmon->sel && selmon->sel->tags & 1 << i,
666 occ & 1 << i, urg & 1 << i, col);
671 drawtext(m->lt[m->sellt]->symbol, dc.norm, False);
674 snprintf(ntext, sizeof ntext, "%u", n);
676 drawtext(ntext, dc.norm, False);
678 if(m == selmon) { /* status is only drawn on selected monitor */
685 drawtext(stext, dc.norm, False);
689 if((dc.w = dc.x - x) > bh) {
692 col = m == selmon ? dc.sel : dc.norm;
693 drawtext(m->sel->name, col, False);
694 drawsquare(m->sel->isfixed, m->sel->isfloating, False, col);
697 drawtext(NULL, dc.norm, False);
699 XCopyArea(dpy, dc.drawable, m->barwin, dc.gc, 0, 0, m->ww, bh, 0, 0);
707 for(m = mons; m; m = m->next)
712 drawsquare(Bool filled, Bool empty, Bool invert, unsigned long col[ColLast]) {
715 XRectangle r = { dc.x, dc.y, dc.w, dc.h };
717 gcv.foreground = col[invert ? ColBG : ColFG];
718 XChangeGC(dpy, dc.gc, GCForeground, &gcv);
719 x = (dc.font.ascent + dc.font.descent + 2) / 4;
723 r.width = r.height = x + 1;
724 XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
727 r.width = r.height = x;
728 XDrawRectangles(dpy, dc.drawable, dc.gc, &r, 1);
733 drawtext(const char *text, unsigned long col[ColLast], Bool invert) {
735 int i, x, y, h, len, olen;
736 XRectangle r = { dc.x, dc.y, dc.w, dc.h };
738 XSetForeground(dpy, dc.gc, col[invert ? ColFG : ColBG]);
739 XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
743 h = dc.font.ascent + dc.font.descent;
744 y = dc.y + (dc.h / 2) - (h / 2) + dc.font.ascent;
746 /* shorten text if necessary */
747 for(len = MIN(olen, sizeof buf); len && textnw(text, len) > dc.w - h; len--);
750 memcpy(buf, text, len);
752 for(i = len; i && i > len - 3; buf[--i] = '.');
753 XSetForeground(dpy, dc.gc, col[invert ? ColBG : ColFG]);
755 XmbDrawString(dpy, dc.drawable, dc.font.set, dc.gc, x, y, buf, len);
757 XDrawString(dpy, dc.drawable, dc.gc, x, y, buf, len);
761 enternotify(XEvent *e) {
764 XCrossingEvent *ev = &e->xcrossing;
766 if((ev->mode != NotifyNormal || ev->detail == NotifyInferior) && ev->window != root)
768 if((m = wintomon(ev->window)) && m != selmon) {
769 unfocus(selmon->sel);
772 if((c = wintoclient(ev->window)))
781 XExposeEvent *ev = &e->xexpose;
783 if(ev->count == 0 && (m = wintomon(ev->window)))
789 if(!c || !ISVISIBLE(c))
790 for(c = selmon->stack; c && !ISVISIBLE(c); c = c->snext);
792 unfocus(selmon->sel);
800 grabbuttons(c, True);
801 XSetWindowBorder(dpy, c->win, dc.sel[ColBorder]);
802 XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
805 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
811 focusin(XEvent *e) { /* there are some broken focus acquiring clients */
812 XFocusChangeEvent *ev = &e->xfocus;
814 if(selmon->sel && ev->window != selmon->sel->win)
815 XSetInputFocus(dpy, selmon->sel->win, RevertToPointerRoot, CurrentTime);
819 focusmon(const Arg *arg) {
824 m = dirtomon(arg->i);
825 unfocus(selmon->sel);
831 focusstack(const Arg *arg) {
832 Client *c = NULL, *i;
837 for(c = selmon->sel->next; c && !ISVISIBLE(c); c = c->next);
839 for(c = selmon->clients; c && !ISVISIBLE(c); c = c->next);
842 for(i = selmon->clients; i != selmon->sel; i = i->next)
846 for(; i; i = i->next)
857 getcolor(const char *colstr) {
858 Colormap cmap = DefaultColormap(dpy, screen);
861 if(!XAllocNamedColor(dpy, cmap, colstr, &color, &color))
862 die("error, cannot allocate color '%s'\n", colstr);
867 getrootptr(int *x, int *y) {
872 return XQueryPointer(dpy, root, &dummy, &dummy, x, y, &di, &di, &dui);
879 unsigned char *p = NULL;
880 unsigned long n, extra;
883 status = XGetWindowProperty(dpy, w, wmatom[WMState], 0L, 2L, False, wmatom[WMState],
884 &real, &format, &n, &extra, (unsigned char **)&p);
885 if(status != Success)
894 gettextprop(Window w, Atom atom, char *text, unsigned int size) {
899 if(!text || size == 0)
902 XGetTextProperty(dpy, w, &name, atom);
905 if(name.encoding == XA_STRING)
906 strncpy(text, (char *)name.value, size - 1);
908 if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
911 strncpy(text, *list, size - 1);
912 XFreeStringList(list);
915 text[size - 1] = '\0';
921 grabbuttons(Client *c, Bool focused) {
925 unsigned int modifiers[] = { 0, LockMask, numlockmask, numlockmask|LockMask };
926 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
928 for(i = 0; i < LENGTH(buttons); i++)
929 if(buttons[i].click == ClkClientWin)
930 for(j = 0; j < LENGTH(modifiers); j++)
931 XGrabButton(dpy, buttons[i].button,
932 buttons[i].mask | modifiers[j],
933 c->win, False, BUTTONMASK,
934 GrabModeAsync, GrabModeSync, None, None);
937 XGrabButton(dpy, AnyButton, AnyModifier, c->win, False,
938 BUTTONMASK, GrabModeAsync, GrabModeSync, None, None);
947 unsigned int modifiers[] = { 0, LockMask, numlockmask, numlockmask|LockMask };
950 XUngrabKey(dpy, AnyKey, AnyModifier, root);
951 for(i = 0; i < LENGTH(keys); i++) {
952 if((code = XKeysymToKeycode(dpy, keys[i].keysym)))
953 for(j = 0; j < LENGTH(modifiers); j++)
954 XGrabKey(dpy, code, keys[i].mod | modifiers[j], root,
955 True, GrabModeAsync, GrabModeAsync);
961 initfont(const char *fontstr) {
962 char *def, **missing;
966 dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
969 fprintf(stderr, "dwm: missing fontset: %s\n", missing[n]);
970 XFreeStringList(missing);
973 XFontSetExtents *font_extents;
974 XFontStruct **xfonts;
976 dc.font.ascent = dc.font.descent = 0;
977 font_extents = XExtentsOfFontSet(dc.font.set);
978 n = XFontsOfFontSet(dc.font.set, &xfonts, &font_names);
979 for(i = 0, dc.font.ascent = 0, dc.font.descent = 0; i < n; i++) {
980 dc.font.ascent = MAX(dc.font.ascent, (*xfonts)->ascent);
981 dc.font.descent = MAX(dc.font.descent,(*xfonts)->descent);
986 if(!(dc.font.xfont = XLoadQueryFont(dpy, fontstr))
987 && !(dc.font.xfont = XLoadQueryFont(dpy, "fixed")))
988 die("error, cannot load font: '%s'\n", fontstr);
989 dc.font.ascent = dc.font.xfont->ascent;
990 dc.font.descent = dc.font.xfont->descent;
992 dc.font.height = dc.font.ascent + dc.font.descent;
996 isprotodel(Client *c) {
1001 if(XGetWMProtocols(dpy, c->win, &protocols, &n)) {
1002 for(i = 0; !ret && i < n; i++)
1003 if(protocols[i] == wmatom[WMDelete])
1011 keypress(XEvent *e) {
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)
1022 keys[i].func(&(keys[i].arg));
1026 killclient(const Arg *arg) {
1031 if(isprotodel(selmon->sel)) {
1032 ev.type = ClientMessage;
1033 ev.xclient.window = selmon->sel->win;
1034 ev.xclient.message_type = wmatom[WMProtocols];
1035 ev.xclient.format = 32;
1036 ev.xclient.data.l[0] = wmatom[WMDelete];
1037 ev.xclient.data.l[1] = CurrentTime;
1038 XSendEvent(dpy, selmon->sel->win, False, NoEventMask, &ev);
1041 XKillClient(dpy, selmon->sel->win);
1045 manage(Window w, XWindowAttributes *wa) {
1047 Client *c, *t = NULL;
1048 Window trans = None;
1051 if(!(c = malloc(sizeof(Client))))
1052 die("fatal: could not malloc() %u bytes\n", sizeof(Client));
1055 if(XGetTransientForHint(dpy, w, &trans))
1056 t = wintoclient(trans);
1066 c->x = wa->x + c->mon->wx;
1067 c->y = wa->y + c->mon->wy;
1070 c->oldbw = wa->border_width;
1071 if(c->w == c->mon->mw && c->h == c->mon->mh) {
1077 if(c->x + WIDTH(c) > c->mon->mx + c->mon->mw)
1078 c->x = c->mon->mx + c->mon->mw - WIDTH(c);
1079 if(c->y + HEIGHT(c) > c->mon->my + c->mon->mh)
1080 c->y = c->mon->my + c->mon->mh - HEIGHT(c);
1081 c->x = MAX(c->x, c->mon->mx);
1082 /* only fix client y-offset, if the client center might cover the bar */
1083 c->y = MAX(c->y, ((c->mon->by == 0) && (c->x + (c->w / 2) >= c->mon->wx)
1084 && (c->x + (c->w / 2) < c->mon->wx + c->mon->ww)) ? bh : c->mon->my);
1087 wc.border_width = c->bw;
1088 XConfigureWindow(dpy, w, CWBorderWidth, &wc);
1089 XSetWindowBorder(dpy, w, dc.norm[ColBorder]);
1090 configure(c); /* propagates border_width, if size doesn't change */
1092 XSelectInput(dpy, w, EnterWindowMask|FocusChangeMask|PropertyChangeMask|StructureNotifyMask);
1093 grabbuttons(c, False);
1096 c->isfloating = trans != None || c->isfixed;
1098 XRaiseWindow(dpy, c->win);
1101 XMoveResizeWindow(dpy, c->win, c->x + 2 * sw, c->y, c->w, c->h); /* some windows require this */
1102 XMapWindow(dpy, c->win);
1103 setclientstate(c, NormalState);
1108 mappingnotify(XEvent *e) {
1109 XMappingEvent *ev = &e->xmapping;
1111 XRefreshKeyboardMapping(ev);
1112 if(ev->request == MappingKeyboard)
1117 maprequest(XEvent *e) {
1118 static XWindowAttributes wa;
1119 XMapRequestEvent *ev = &e->xmaprequest;
1121 if(!XGetWindowAttributes(dpy, ev->window, &wa))
1123 if(wa.override_redirect)
1125 if(!wintoclient(ev->window))
1126 manage(ev->window, &wa);
1130 monocle(Monitor *m) {
1133 for(c = nexttiled(m->clients); c; c = nexttiled(c->next))
1134 resize(c, m->wx, m->wy, m->ww - 2 * c->bw, m->wh - 2 * c->bw, False);
1138 movemouse(const Arg *arg) {
1139 int x, y, ocx, ocy, nx, ny;
1144 if(!(c = selmon->sel))
1149 if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
1150 None, cursor[CurMove], CurrentTime) != GrabSuccess)
1152 if(!getrootptr(&x, &y))
1155 XMaskEvent(dpy, MOUSEMASK|ExposureMask|SubstructureRedirectMask, &ev);
1157 case ConfigureRequest:
1160 handler[ev.type](&ev);
1163 nx = ocx + (ev.xmotion.x - x);
1164 ny = ocy + (ev.xmotion.y - y);
1165 if(snap && nx >= selmon->wx && nx <= selmon->wx + selmon->ww
1166 && ny >= selmon->wy && ny <= selmon->wy + selmon->wh) {
1167 if(abs(selmon->wx - nx) < snap)
1169 else if(abs((selmon->wx + selmon->ww) - (nx + WIDTH(c))) < snap)
1170 nx = selmon->wx + selmon->ww - WIDTH(c);
1171 if(abs(selmon->wy - ny) < snap)
1173 else if(abs((selmon->wy + selmon->wh) - (ny + HEIGHT(c))) < snap)
1174 ny = selmon->wy + selmon->wh - HEIGHT(c);
1175 if(!c->isfloating && selmon->lt[selmon->sellt]->arrange
1176 && (abs(nx - c->x) > snap || abs(ny - c->y) > snap))
1177 togglefloating(NULL);
1179 if(!selmon->lt[selmon->sellt]->arrange || c->isfloating)
1180 resize(c, nx, ny, c->w, c->h, True);
1184 while(ev.type != ButtonRelease);
1185 XUngrabPointer(dpy, CurrentTime);
1186 if((m = ptrtomon(c->x + c->w / 2, c->y + c->h / 2)) != selmon) {
1194 nexttiled(Client *c) {
1195 for(; c && (c->isfloating || !ISVISIBLE(c)); c = c->next);
1200 ptrtomon(int x, int y) {
1203 for(m = mons; m; m = m->next)
1204 if(INRECT(x, y, m->wx, m->wy, m->ww, m->wh))
1210 propertynotify(XEvent *e) {
1213 XPropertyEvent *ev = &e->xproperty;
1215 if((ev->window == root) && (ev->atom == XA_WM_NAME))
1217 else if(ev->state == PropertyDelete)
1218 return; /* ignore */
1219 else if((c = wintoclient(ev->window))) {
1222 case XA_WM_TRANSIENT_FOR:
1223 XGetTransientForHint(dpy, c->win, &trans);
1224 if(!c->isfloating && (c->isfloating = (wintoclient(trans) != NULL)))
1227 case XA_WM_NORMAL_HINTS:
1235 if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
1237 if(c == selmon->sel)
1244 quit(const Arg *arg) {
1249 resize(Client *c, int x, int y, int w, int h, Bool interact) {
1252 if(applysizehints(c, &x, &y, &w, &h, interact)) {
1255 c->w = wc.width = w;
1256 c->h = wc.height = h;
1257 wc.border_width = c->bw;
1258 XConfigureWindow(dpy, c->win, CWX|CWY|CWWidth|CWHeight|CWBorderWidth, &wc);
1265 resizemouse(const Arg *arg) {
1272 if(!(c = selmon->sel))
1277 if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
1278 None, cursor[CurResize], CurrentTime) != GrabSuccess)
1280 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->bw - 1, c->h + c->bw - 1);
1282 XMaskEvent(dpy, MOUSEMASK|ExposureMask|SubstructureRedirectMask, &ev);
1284 case ConfigureRequest:
1287 handler[ev.type](&ev);
1290 nw = MAX(ev.xmotion.x - ocx - 2 * c->bw + 1, 1);
1291 nh = MAX(ev.xmotion.y - ocy - 2 * c->bw + 1, 1);
1292 if(snap && nw >= selmon->wx && nw <= selmon->wx + selmon->ww
1293 && nh >= selmon->wy && nh <= selmon->wy + selmon->wh) {
1294 if(!c->isfloating && selmon->lt[selmon->sellt]->arrange
1295 && (abs(nw - c->w) > snap || abs(nh - c->h) > snap))
1296 togglefloating(NULL);
1298 if(!selmon->lt[selmon->sellt]->arrange || c->isfloating)
1299 resize(c, c->x, c->y, nw, nh, True);
1303 while(ev.type != ButtonRelease);
1304 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->bw - 1, c->h + c->bw - 1);
1305 XUngrabPointer(dpy, CurrentTime);
1306 while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
1307 if((m = ptrtomon(c->x + c->w / 2, c->y + c->h / 2)) != selmon) {
1315 restack(Monitor *m) {
1323 if(m->sel->isfloating || !m->lt[m->sellt]->arrange)
1324 XRaiseWindow(dpy, m->sel->win);
1325 if(m->lt[m->sellt]->arrange) {
1326 wc.stack_mode = Below;
1327 wc.sibling = m->barwin;
1328 for(c = m->stack; c; c = c->snext)
1329 if(!c->isfloating && ISVISIBLE(c)) {
1330 XConfigureWindow(dpy, c->win, CWSibling|CWStackMode, &wc);
1331 wc.sibling = c->win;
1335 while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
1342 /* main event loop */
1344 while(running && !XNextEvent(dpy, &ev))
1345 if(handler[ev.type])
1346 (handler[ev.type])(&ev); /* call handler */
1351 unsigned int i, num;
1352 Window d1, d2, *wins = NULL;
1353 XWindowAttributes wa;
1355 if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
1356 for(i = 0; i < num; i++) {
1357 if(!XGetWindowAttributes(dpy, wins[i], &wa)
1358 || wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
1360 if(wa.map_state == IsViewable || getstate(wins[i]) == IconicState)
1361 manage(wins[i], &wa);
1363 for(i = 0; i < num; i++) { /* now the transients */
1364 if(!XGetWindowAttributes(dpy, wins[i], &wa))
1366 if(XGetTransientForHint(dpy, wins[i], &d1)
1367 && (wa.map_state == IsViewable || getstate(wins[i]) == IconicState))
1368 manage(wins[i], &wa);
1376 sendmon(Client *c, Monitor *m) {
1383 c->tags = m->tagset[m->seltags]; /* assign tags of target monitor */
1391 setclientstate(Client *c, long state) {
1392 long data[] = { state, None };
1394 XChangeProperty(dpy, c->win, wmatom[WMState], wmatom[WMState], 32,
1395 PropModeReplace, (unsigned char *)data, 2);
1399 setlayout(const Arg *arg) {
1400 if(!arg || !arg->v || arg->v != selmon->lt[selmon->sellt])
1403 selmon->lt[selmon->sellt] = (Layout *)arg->v;
1410 /* arg > 1.0 will set mfact absolutly */
1412 setmfact(const Arg *arg) {
1415 if(!arg || !selmon->lt[selmon->sellt]->arrange)
1417 f = arg->f < 1.0 ? arg->f + selmon->mfact : arg->f - 1.0;
1418 if(f < 0.1 || f > 0.9)
1428 XSetWindowAttributes wa;
1431 screen = DefaultScreen(dpy);
1432 root = RootWindow(dpy, screen);
1434 sw = DisplayWidth(dpy, screen);
1435 sh = DisplayHeight(dpy, screen);
1436 bh = dc.h = dc.font.height + 2;
1439 wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
1440 wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
1441 wmatom[WMState] = XInternAtom(dpy, "WM_STATE", False);
1442 netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
1443 netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
1445 cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
1446 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
1447 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
1448 /* init appearance */
1449 dc.norm[ColBorder] = getcolor(normbordercolor);
1450 dc.norm[ColBG] = getcolor(normbgcolor);
1451 dc.norm[ColFG] = getcolor(normfgcolor);
1452 dc.sel[ColBorder] = getcolor(selbordercolor);
1453 dc.sel[ColBG] = getcolor(selbgcolor);
1454 dc.sel[ColFG] = getcolor(selfgcolor);
1455 dc.drawable = XCreatePixmap(dpy, root, DisplayWidth(dpy, screen), bh, DefaultDepth(dpy, screen));
1456 dc.gc = XCreateGC(dpy, root, 0, NULL);
1457 XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
1459 XSetFont(dpy, dc.gc, dc.font.xfont->fid);
1461 for(blw = i = 0; LENGTH(layouts) > 1 && i < LENGTH(layouts); i++) {
1462 w = TEXTW(layouts[i].symbol);
1467 /* EWMH support per view */
1468 XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
1469 PropModeReplace, (unsigned char *) netatom, NetLast);
1470 /* select for events */
1471 wa.cursor = cursor[CurNormal];
1472 wa.event_mask = SubstructureRedirectMask|SubstructureNotifyMask|ButtonPressMask
1473 |EnterWindowMask|LeaveWindowMask|StructureNotifyMask
1474 |PropertyChangeMask;
1475 XChangeWindowAttributes(dpy, root, CWEventMask|CWCursor, &wa);
1476 XSelectInput(dpy, root, wa.event_mask);
1481 showhide(Client *c) {
1484 if(ISVISIBLE(c)) { /* show clients top down */
1485 XMoveWindow(dpy, c->win, c->x, c->y);
1486 if(!c->mon->lt[c->mon->sellt]->arrange || c->isfloating)
1487 resize(c, c->x, c->y, c->w, c->h, False);
1490 else { /* hide clients bottom up */
1492 XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
1498 sigchld(int signal) {
1499 while(0 < waitpid(-1, NULL, WNOHANG));
1503 spawn(const Arg *arg) {
1504 signal(SIGCHLD, sigchld);
1507 close(ConnectionNumber(dpy));
1509 execvp(((char **)arg->v)[0], (char **)arg->v);
1510 fprintf(stderr, "dwm: execvp %s", ((char **)arg->v)[0]);
1517 tag(const Arg *arg) {
1518 if(selmon->sel && arg->ui & TAGMASK) {
1519 selmon->sel->tags = arg->ui & TAGMASK;
1525 tagmon(const Arg *arg) {
1526 if(!selmon->sel || !mons->next)
1528 sendmon(selmon->sel, dirtomon(arg->i));
1532 textnw(const char *text, unsigned int len) {
1536 XmbTextExtents(dc.font.set, text, len, NULL, &r);
1539 return XTextWidth(dc.font.xfont, text, len);
1548 for(n = 0, c = nexttiled(m->clients); c; c = nexttiled(c->next), n++);
1552 c = nexttiled(m->clients);
1553 mw = m->mfact * m->ww;
1554 resize(c, m->wx, m->wy, (n == 1 ? m->ww : mw) - 2 * c->bw, m->wh - 2 * c->bw, False);
1558 x = (m->wx + mw > c->x + c->w) ? c->x + c->w + 2 * c->bw : m->wx + mw;
1560 w = (m->wx + mw > c->x + c->w) ? m->wx + m->ww - x : m->ww - mw;
1564 for(i = 0, c = nexttiled(c->next); c; c = nexttiled(c->next), i++) {
1565 resize(c, x, y, w - 2 * c->bw, /* remainder */ ((i + 1 == n)
1566 ? m->wy + m->wh - y - 2 * c->bw : h - 2 * c->bw), False);
1568 y = c->y + HEIGHT(c);
1573 togglebar(const Arg *arg) {
1574 selmon->showbar = !selmon->showbar;
1575 updatebarpos(selmon);
1576 XMoveResizeWindow(dpy, selmon->barwin, selmon->wx, selmon->by, selmon->ww, bh);
1581 togglefloating(const Arg *arg) {
1584 selmon->sel->isfloating = !selmon->sel->isfloating || selmon->sel->isfixed;
1585 if(selmon->sel->isfloating)
1586 resize(selmon->sel, selmon->sel->x, selmon->sel->y,
1587 selmon->sel->w, selmon->sel->h, False);
1592 toggletag(const Arg *arg) {
1597 mask = selmon->sel->tags ^ (arg->ui & TAGMASK);
1599 selmon->sel->tags = mask;
1605 toggleview(const Arg *arg) {
1606 unsigned int mask = selmon->tagset[selmon->seltags] ^ (arg->ui & TAGMASK);
1609 selmon->tagset[selmon->seltags] = mask;
1615 unfocus(Client *c) {
1618 grabbuttons(c, False);
1619 XSetWindowBorder(dpy, c->win, dc.norm[ColBorder]);
1620 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
1624 unmanage(Client *c) {
1627 wc.border_width = c->oldbw;
1628 /* The server grab construct avoids race conditions. */
1630 XSetErrorHandler(xerrordummy);
1631 XConfigureWindow(dpy, c->win, CWBorderWidth, &wc); /* restore border */
1634 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
1635 setclientstate(c, WithdrawnState);
1638 XSetErrorHandler(xerror);
1645 unmapnotify(XEvent *e) {
1647 XUnmapEvent *ev = &e->xunmap;
1649 if((c = wintoclient(ev->window)))
1656 XSetWindowAttributes wa;
1658 wa.override_redirect = True;
1659 wa.background_pixmap = ParentRelative;
1660 wa.event_mask = ButtonPressMask|ExposureMask;
1661 for(m = mons; m; m = m->next) {
1662 m->barwin = XCreateWindow(dpy, root, m->wx, m->by, m->ww, bh, 0, DefaultDepth(dpy, screen),
1663 CopyFromParent, DefaultVisual(dpy, screen),
1664 CWOverrideRedirect|CWBackPixmap|CWEventMask, &wa);
1665 XDefineCursor(dpy, m->barwin, cursor[CurNormal]);
1666 XMapRaised(dpy, m->barwin);
1671 updatebarpos(Monitor *m) {
1676 m->by = m->topbar ? m->wy : m->wy + m->wh;
1677 m->wy = m->topbar ? m->wy + bh : m->wy;
1687 Monitor *newmons = NULL, *m = NULL, *tm;
1690 XineramaScreenInfo *info = NULL;
1692 if(XineramaIsActive(dpy))
1693 info = XineramaQueryScreens(dpy, &n);
1694 #endif /* XINERAMA */
1695 /* allocate monitor(s) for the new geometry setup */
1696 for(i = 0; i < n; i++) {
1697 if(!(m = (Monitor *)malloc(sizeof(Monitor))))
1698 die("fatal: could not malloc() %u bytes\n", sizeof(Monitor));
1702 /* initialise monitor(s) */
1704 if(XineramaIsActive(dpy)) {
1705 for(i = 0, m = newmons; m; m = m->next, i++) {
1706 m->num = info[i].screen_number;
1707 m->mx = m->wx = info[i].x_org;
1708 m->my = m->wy = info[i].y_org;
1709 m->mw = m->ww = info[i].width;
1710 m->mh = m->wh = info[i].height;
1715 #endif /* XINERAMA */
1716 /* default monitor setup */
1724 /* bar geometry setup */
1725 for(m = newmons; m; m = m->next) {
1726 m->sel = m->stack = m->clients = NULL;
1729 m->tagset[0] = m->tagset[1] = 1;
1731 m->showbar = showbar;
1733 m->lt[0] = &layouts[0];
1734 m->lt[1] = &layouts[1 % LENGTH(layouts)];
1737 /* reassign left over clients of disappeared monitors */
1738 for(tm = mons; tm; tm = tm->next)
1739 while(tm->clients) {
1741 tm->clients = c->next;
1747 /* select focused monitor */
1749 selmon = mons = newmons;
1750 selmon = wintomon(root);
1754 updatenumlockmask(void) {
1756 XModifierKeymap *modmap;
1759 modmap = XGetModifierMapping(dpy);
1760 for(i = 0; i < 8; i++)
1761 for(j = 0; j < modmap->max_keypermod; j++)
1762 if(modmap->modifiermap[i * modmap->max_keypermod + j]
1763 == XKeysymToKeycode(dpy, XK_Num_Lock))
1764 numlockmask = (1 << i);
1765 XFreeModifiermap(modmap);
1769 updatesizehints(Client *c) {
1773 if(!XGetWMNormalHints(dpy, c->win, &size, &msize))
1774 /* size is uninitialized, ensure that size.flags aren't used */
1776 if(size.flags & PBaseSize) {
1777 c->basew = size.base_width;
1778 c->baseh = size.base_height;
1780 else if(size.flags & PMinSize) {
1781 c->basew = size.min_width;
1782 c->baseh = size.min_height;
1785 c->basew = c->baseh = 0;
1786 if(size.flags & PResizeInc) {
1787 c->incw = size.width_inc;
1788 c->inch = size.height_inc;
1791 c->incw = c->inch = 0;
1792 if(size.flags & PMaxSize) {
1793 c->maxw = size.max_width;
1794 c->maxh = size.max_height;
1797 c->maxw = c->maxh = 0;
1798 if(size.flags & PMinSize) {
1799 c->minw = size.min_width;
1800 c->minh = size.min_height;
1802 else if(size.flags & PBaseSize) {
1803 c->minw = size.base_width;
1804 c->minh = size.base_height;
1807 c->minw = c->minh = 0;
1808 if(size.flags & PAspect) {
1809 c->mina = (float)size.min_aspect.y / (float)size.min_aspect.x;
1810 c->maxa = (float)size.max_aspect.x / (float)size.max_aspect.y;
1813 c->maxa = c->mina = 0.0;
1814 c->isfixed = (c->maxw && c->minw && c->maxh && c->minh
1815 && c->maxw == c->minw && c->maxh == c->minh);
1819 updatetitle(Client *c) {
1820 if(!gettextprop(c->win, netatom[NetWMName], c->name, sizeof c->name))
1821 gettextprop(c->win, XA_WM_NAME, c->name, sizeof c->name);
1825 updatestatus(void) {
1826 if(!gettextprop(root, XA_WM_NAME, stext, sizeof(stext)))
1827 strcpy(stext, "dwm-"VERSION);
1832 updatewmhints(Client *c) {
1835 if((wmh = XGetWMHints(dpy, c->win))) {
1836 if(c == selmon->sel && wmh->flags & XUrgencyHint) {
1837 wmh->flags &= ~XUrgencyHint;
1838 XSetWMHints(dpy, c->win, wmh);
1841 c->isurgent = (wmh->flags & XUrgencyHint) ? True : False;
1847 view(const Arg *arg) {
1848 if((arg->ui & TAGMASK) == selmon->tagset[selmon->seltags])
1850 selmon->seltags ^= 1; /* toggle sel tagset */
1851 if(arg->ui & TAGMASK)
1852 selmon->tagset[selmon->seltags] = arg->ui & TAGMASK;
1857 wintoclient(Window w) {
1861 for(m = mons; m; m = m->next)
1862 for(c = m->clients; c; c = c->next)
1869 wintomon(Window w) {
1874 if(w == root && getrootptr(&x, &y))
1875 return ptrtomon(x, y);
1876 for(m = mons; m; m = m->next)
1879 if((c = wintoclient(w)))
1884 /* There's no way to check accesses to destroyed windows, thus those cases are
1885 * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
1886 * default error handler, which may call exit. */
1888 xerror(Display *dpy, XErrorEvent *ee) {
1889 if(ee->error_code == BadWindow
1890 || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
1891 || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
1892 || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
1893 || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
1894 || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
1895 || (ee->request_code == X_GrabButton && ee->error_code == BadAccess)
1896 || (ee->request_code == X_GrabKey && ee->error_code == BadAccess)
1897 || (ee->request_code == X_CopyArea && ee->error_code == BadDrawable))
1899 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
1900 ee->request_code, ee->error_code);
1901 return xerrorxlib(dpy, ee); /* may call exit */
1905 xerrordummy(Display *dpy, XErrorEvent *ee) {
1909 /* Startup Error handler to check if another window manager
1910 * is already running. */
1912 xerrorstart(Display *dpy, XErrorEvent *ee) {
1918 zoom(const Arg *arg) {
1919 Client *c = selmon->sel;
1921 if(!selmon->lt[selmon->sellt]->arrange
1922 || selmon->lt[selmon->sellt]->arrange == monocle
1923 || (selmon->sel && selmon->sel->isfloating))
1925 if(c == nexttiled(selmon->clients))
1926 if(!c || !(c = nexttiled(c->next)))
1935 main(int argc, char *argv[]) {
1936 if(argc == 2 && !strcmp("-v", argv[1]))
1937 die("dwm-"VERSION", © 2006-2009 dwm engineers, see LICENSE for details\n");
1939 die("usage: dwm [-v]\n");
1940 if(!setlocale(LC_CTYPE, "") || !XSupportsLocale())
1941 fputs("warning: no locale support\n", stderr);
1942 if(!(dpy = XOpenDisplay(NULL)))
1943 die("dwm: cannot open display\n");