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 global
15 * linked client list, the focus history is remembered through a global
16 * stack list. 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, btx; /* 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];
143 const char *instance;
149 /* function declarations */
150 static void applyrules(Client *c);
151 static Bool applysizehints(Client *c, int *x, int *y, int *w, int *h);
152 static void arrange(void);
153 static void attach(Client *c);
154 static void attachstack(Client *c);
155 static void buttonpress(XEvent *e);
156 static void checkotherwm(void);
157 static void cleanup(void);
158 static void cleanupmons(void);
159 static void clearurgent(Client *c);
160 static void configure(Client *c);
161 static void configurenotify(XEvent *e);
162 static void configurerequest(XEvent *e);
163 static void destroynotify(XEvent *e);
164 static void detach(Client *c);
165 static void detachstack(Client *c);
166 static void die(const char *errstr, ...);
167 static void drawbar(Monitor *m);
168 static void drawbars(void);
169 static void drawsquare(Bool filled, Bool empty, Bool invert, unsigned long col[ColLast]);
170 static void drawtext(const char *text, unsigned long col[ColLast], Bool invert);
171 static void enternotify(XEvent *e);
172 static void expose(XEvent *e);
173 static void focus(Client *c);
174 static void focusin(XEvent *e);
175 static void focusstack(const Arg *arg);
176 static unsigned long getcolor(const char *colstr);
177 static Bool getrootpointer(int *x, int *y);
178 static long getstate(Window w);
179 static Bool gettextprop(Window w, Atom atom, char *text, unsigned int size);
180 static void grabbuttons(Client *c, Bool focused);
181 static void grabkeys(void);
182 static void initfont(const char *fontstr);
183 static Bool isprotodel(Client *c);
184 static void keypress(XEvent *e);
185 static void killclient(const Arg *arg);
186 static void manage(Window w, XWindowAttributes *wa);
187 static void mappingnotify(XEvent *e);
188 static void maprequest(XEvent *e);
189 static void monocle(Monitor *m);
190 static void movemouse(const Arg *arg);
191 static Client *nexttiled(Client *c);
192 static Monitor *pointertomon(int x, int y);
193 static void propertynotify(XEvent *e);
194 static void quit(const Arg *arg);
195 static void resize(Client *c, int x, int y, int w, int h);
196 static void resizemouse(const Arg *arg);
197 static void restack(Monitor *m);
198 static void run(void);
199 static void scan(void);
200 static void sendmon(Client *c, Monitor *m);
201 static void setclientstate(Client *c, long state);
202 static void setlayout(const Arg *arg);
203 static void setmfact(const Arg *arg);
204 static void setup(void);
205 static void showhide(Client *c);
206 static void sigchld(int signal);
207 static void spawn(const Arg *arg);
208 static void tag(const Arg *arg);
209 static int textnw(const char *text, unsigned int len);
210 static void tile(Monitor *);
211 static void togglebar(const Arg *arg);
212 static void togglefloating(const Arg *arg);
213 static void toggletag(const Arg *arg);
214 static void toggleview(const Arg *arg);
215 static void unfocus(Client *c);
216 static void unmanage(Client *c);
217 static void unmapnotify(XEvent *e);
218 static void updategeom(void);
219 static void updatebarpos(Monitor *m);
220 static void updatebars(void);
221 static void updatenumlockmask(void);
222 static void updatesizehints(Client *c);
223 static void updatestatus(void);
224 static void updatetitle(Client *c);
225 static void updatewmhints(Client *c);
226 static void view(const Arg *arg);
227 static Client *wintoclient(Window w);
228 static Monitor *wintomon(Window w);
229 static int xerror(Display *dpy, XErrorEvent *ee);
230 static int xerrordummy(Display *dpy, XErrorEvent *ee);
231 static int xerrorstart(Display *dpy, XErrorEvent *ee);
232 static void zoom(const Arg *arg);
234 static void focusmon(const Arg *arg);
235 static Monitor *idxtomon(unsigned int n);
236 static void tagmon(const Arg *arg);
237 #endif /* XINERAMA */
240 static char stext[256];
242 static int sw, sh; /* X display screen geometry x, y, 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 Layout *lt[] = { NULL, NULL };
267 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) {
280 XClassHint ch = { 0 };
283 c->isfloating = c->tags = 0;
284 if(XGetClassHint(dpy, c->win, &ch)) {
285 for(i = 0; i < LENGTH(rules); i++) {
287 if((!r->title || strstr(c->name, r->title))
288 && (!r->class || (ch.res_class && strstr(ch.res_class, r->class)))
289 && (!r->instance || (ch.res_name && strstr(ch.res_name, r->instance)))) {
290 c->isfloating = r->isfloating;
299 c->tags = c->tags & TAGMASK ? c->tags & TAGMASK : c->mon->tagset[c->mon->seltags];
303 applysizehints(Client *c, int *x, int *y, int *w, int *h) {
307 /* set minimum possible */
311 if(*x > m->mx + m->mw)
312 *x = m->mw - WIDTH(c);
313 if(*y > m->my + m->mh)
314 *y = m->mh - HEIGHT(c);
315 if(*x + *w + 2 * c->bw < m->mx)
317 if(*y + *h + 2 * c->bw < m->my)
324 if(resizehints || c->isfloating) {
325 /* see last two sentences in ICCCM 4.1.2.3 */
326 baseismin = c->basew == c->minw && c->baseh == c->minh;
328 if(!baseismin) { /* temporarily remove base dimensions */
333 /* adjust for aspect limits */
334 if(c->mina > 0 && c->maxa > 0) {
335 if(c->maxa < (float)*w / *h)
337 else if(c->mina < (float)*h / *w)
341 if(baseismin) { /* increment calculation requires this */
346 /* adjust for increment value */
352 /* restore base dimensions */
356 *w = MAX(*w, c->minw);
357 *h = MAX(*h, c->minh);
360 *w = MIN(*w, c->maxw);
363 *h = MIN(*h, c->maxh);
365 return *x != c->x || *y != c->y || *w != c->w || *h != c->h;
372 /* optimise two loops into one, check focus(NULL) */
373 for(m = mons; m; m = m->next)
376 for(m = mons; m; m = m->next) {
377 if(lt[m->sellt]->arrange)
378 lt[m->sellt]->arrange(m);
385 c->next = c->mon->clients;
390 attachstack(Client *c) {
391 c->snext = c->mon->stack;
396 buttonpress(XEvent *e) {
397 unsigned int i, x, click;
401 XButtonPressedEvent *ev = &e->xbutton;
404 /* focus monitor if necessary */
405 if((m = wintomon(ev->window)) && m != selmon) {
406 unfocus(selmon->sel);
410 if(ev->window == selmon->barwin && ev->x >= selmon->btx) {
415 while(ev->x >= x && ++i < LENGTH(tags));
416 if(i < LENGTH(tags)) {
420 else if(ev->x < x + blw)
422 else if(ev->x > selmon->wx + selmon->ww - TEXTW(stext))
423 click = ClkStatusText;
427 else if((c = wintoclient(ev->window))) {
429 click = ClkClientWin;
432 for(i = 0; i < LENGTH(buttons); i++)
433 if(click == buttons[i].click && buttons[i].func && buttons[i].button == ev->button
434 && CLEANMASK(buttons[i].mask) == CLEANMASK(ev->state))
435 buttons[i].func(click == ClkTagBar && buttons[i].arg.i == 0 ? &arg : &buttons[i].arg);
441 xerrorxlib = XSetErrorHandler(xerrorstart);
443 /* this causes an error if some other window manager is running */
444 XSelectInput(dpy, DefaultRootWindow(dpy), SubstructureRedirectMask);
447 die("dwm: another window manager is already running\n");
448 XSetErrorHandler(xerror);
455 Layout foo = { "", NULL };
459 lt[selmon->sellt] = &foo;
460 for(m = mons; m; m = m->next)
464 XFreeFontSet(dpy, dc.font.set);
466 XFreeFont(dpy, dc.font.xfont);
467 XUngrabKey(dpy, AnyKey, AnyModifier, root);
468 XFreePixmap(dpy, dc.drawable);
470 XFreeCursor(dpy, cursor[CurNormal]);
471 XFreeCursor(dpy, cursor[CurResize]);
472 XFreeCursor(dpy, cursor[CurMove]);
475 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
484 XUnmapWindow(dpy, mons->barwin);
485 XDestroyWindow(dpy, mons->barwin);
492 clearurgent(Client *c) {
496 if(!(wmh = XGetWMHints(dpy, c->win)))
498 wmh->flags &= ~XUrgencyHint;
499 XSetWMHints(dpy, c->win, wmh);
504 configure(Client *c) {
507 ce.type = ConfigureNotify;
515 ce.border_width = c->bw;
517 ce.override_redirect = False;
518 XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&ce);
522 configurenotify(XEvent *e) {
524 XConfigureEvent *ev = &e->xconfigure;
526 if(ev->window == root && (ev->width != sw || ev->height != sh)) {
531 XFreePixmap(dpy, dc.drawable);
532 dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
534 for(m = mons; m; m = m->next)
535 XMoveResizeWindow(dpy, m->barwin, m->wx, m->by, m->ww, bh);
541 configurerequest(XEvent *e) {
544 XConfigureRequestEvent *ev = &e->xconfigurerequest;
547 if((c = wintoclient(ev->window))) {
548 if(ev->value_mask & CWBorderWidth)
549 c->bw = ev->border_width;
550 else if(c->isfloating || !lt[selmon->sellt]->arrange) {
552 if(ev->value_mask & CWX)
553 c->x = m->mx + ev->x;
554 if(ev->value_mask & CWY)
555 c->y = m->my + ev->y;
556 if(ev->value_mask & CWWidth)
558 if(ev->value_mask & CWHeight)
560 if((c->x - m->mx + c->w) > m->mw && c->isfloating)
561 c->x = m->mx + (m->mw / 2 - c->w / 2); /* center in x direction */
562 if((c->y - m->my + c->h) > m->mh && c->isfloating)
563 c->y = m->my + (m->mh / 2 - c->h / 2); /* center in y direction */
564 if((ev->value_mask & (CWX|CWY)) && !(ev->value_mask & (CWWidth|CWHeight)))
567 XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
575 wc.width = ev->width;
576 wc.height = ev->height;
577 wc.border_width = ev->border_width;
578 wc.sibling = ev->above;
579 wc.stack_mode = ev->detail;
580 XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
586 destroynotify(XEvent *e) {
588 XDestroyWindowEvent *ev = &e->xdestroywindow;
590 if((c = wintoclient(ev->window)))
598 for(tc = &c->mon->clients; *tc && *tc != c; tc = &(*tc)->next);
603 detachstack(Client *c) {
606 for(tc = &c->mon->stack; *tc && *tc != c; tc = &(*tc)->snext);
609 if(c == c->mon->sel) {
610 for(t = c->mon->stack; t && !ISVISIBLE(t); t = t->snext);
616 die(const char *errstr, ...) {
619 va_start(ap, errstr);
620 vfprintf(stderr, errstr, ap);
626 drawbar(Monitor *m) {
628 unsigned int i, occ = 0, urg = 0;
632 for(c = m->clients; c; c = c->next) {
640 if(mons->next) { /* more than a single monitor */
642 buf[0] = m->screen_number + '0';
645 drawtext(buf, selmon == m ? dc.sel : dc.norm, True);
648 #endif /* XINERAMA */
650 for(i = 0; i < LENGTH(tags); i++) {
651 dc.w = TEXTW(tags[i]);
652 col = m->tagset[m->seltags] & 1 << i ? dc.sel : dc.norm;
653 drawtext(tags[i], col, urg & 1 << i);
654 drawsquare(m == selmon && selmon->sel && selmon->sel->tags & 1 << i,
655 occ & 1 << i, urg & 1 << i, col);
660 drawtext(lt[m->sellt]->symbol, dc.norm, False);
665 if(m == selmon) { /* status is only drawn on selected monitor */
672 drawtext(stext, dc.norm, False);
677 if((dc.w = dc.x - x) > bh) {
680 col = m == selmon ? dc.sel : dc.norm;
681 drawtext(m->sel->name, col, False);
682 drawsquare(m->sel->isfixed, m->sel->isfloating, False, col);
685 drawtext(NULL, dc.norm, False);
687 XCopyArea(dpy, dc.drawable, m->barwin, dc.gc, 0, 0, m->ww, bh, 0, 0);
695 for(m = mons; m; m = m->next)
700 drawsquare(Bool filled, Bool empty, Bool invert, unsigned long col[ColLast]) {
703 XRectangle r = { dc.x, dc.y, dc.w, dc.h };
705 gcv.foreground = col[invert ? ColBG : ColFG];
706 XChangeGC(dpy, dc.gc, GCForeground, &gcv);
707 x = (dc.font.ascent + dc.font.descent + 2) / 4;
711 r.width = r.height = x + 1;
712 XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
715 r.width = r.height = x;
716 XDrawRectangles(dpy, dc.drawable, dc.gc, &r, 1);
721 drawtext(const char *text, unsigned long col[ColLast], Bool invert) {
723 int i, x, y, h, len, olen;
724 XRectangle r = { dc.x, dc.y, dc.w, dc.h };
726 XSetForeground(dpy, dc.gc, col[invert ? ColFG : ColBG]);
727 XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
731 h = dc.font.ascent + dc.font.descent;
732 y = dc.y + (dc.h / 2) - (h / 2) + dc.font.ascent;
734 /* shorten text if necessary */
735 for(len = MIN(olen, sizeof buf); len && textnw(text, len) > dc.w - h; len--);
738 memcpy(buf, text, len);
740 for(i = len; i && i > len - 3; buf[--i] = '.');
741 XSetForeground(dpy, dc.gc, col[invert ? ColBG : ColFG]);
743 XmbDrawString(dpy, dc.drawable, dc.font.set, dc.gc, x, y, buf, len);
745 XDrawString(dpy, dc.drawable, dc.gc, x, y, buf, len);
749 enternotify(XEvent *e) {
752 XCrossingEvent *ev = &e->xcrossing;
754 if((ev->mode != NotifyNormal || ev->detail == NotifyInferior) && ev->window != root)
756 if((m = wintomon(ev->window)) && m != selmon) {
757 unfocus(selmon->sel);
760 if((c = wintoclient(ev->window)))
769 XExposeEvent *ev = &e->xexpose;
771 if(ev->count == 0 && (m = wintomon(ev->window)))
777 if(!c || !ISVISIBLE(c))
778 for(c = selmon->stack; c && !ISVISIBLE(c); c = c->snext);
780 unfocus(selmon->sel);
788 grabbuttons(c, True);
789 XSetWindowBorder(dpy, c->win, dc.sel[ColBorder]);
790 XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
793 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
799 focusin(XEvent *e) { /* there are some broken focus acquiring clients */
800 XFocusChangeEvent *ev = &e->xfocus;
802 if(selmon->sel && ev->window != selmon->sel->win)
803 XSetInputFocus(dpy, selmon->sel->win, RevertToPointerRoot, CurrentTime);
808 focusmon(const Arg *arg) {
811 if(!(m = idxtomon(arg->ui)) || m == selmon)
813 unfocus(selmon->sel);
817 #endif /* XINERAMA */
820 focusstack(const Arg *arg) {
821 Client *c = NULL, *i;
826 for(c = selmon->sel->next; c && !ISVISIBLE(c); c = c->next);
828 for(c = selmon->clients; c && !ISVISIBLE(c); c = c->next);
831 for(i = selmon->clients; i != selmon->sel; i = i->next)
835 for(; i; i = i->next)
846 getcolor(const char *colstr) {
847 Colormap cmap = DefaultColormap(dpy, screen);
850 if(!XAllocNamedColor(dpy, cmap, colstr, &color, &color))
851 die("error, cannot allocate color '%s'\n", colstr);
856 getrootpointer(int *x, int *y) {
860 return XQueryPointer(dpy, root, &dummy, &dummy, x, y, &di, &di, &dui);
867 unsigned char *p = NULL;
868 unsigned long n, extra;
871 status = XGetWindowProperty(dpy, w, wmatom[WMState], 0L, 2L, False, wmatom[WMState],
872 &real, &format, &n, &extra, (unsigned char **)&p);
873 if(status != Success)
882 gettextprop(Window w, Atom atom, char *text, unsigned int size) {
887 if(!text || size == 0)
890 XGetTextProperty(dpy, w, &name, atom);
893 if(name.encoding == XA_STRING)
894 strncpy(text, (char *)name.value, size - 1);
896 if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
898 strncpy(text, *list, size - 1);
899 XFreeStringList(list);
902 text[size - 1] = '\0';
908 grabbuttons(Client *c, Bool focused) {
912 unsigned int modifiers[] = { 0, LockMask, numlockmask, numlockmask|LockMask };
913 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
915 for(i = 0; i < LENGTH(buttons); i++)
916 if(buttons[i].click == ClkClientWin)
917 for(j = 0; j < LENGTH(modifiers); j++)
918 XGrabButton(dpy, buttons[i].button,
919 buttons[i].mask | modifiers[j],
920 c->win, False, BUTTONMASK,
921 GrabModeAsync, GrabModeSync, None, None);
923 XGrabButton(dpy, AnyButton, AnyModifier, c->win, False,
924 BUTTONMASK, GrabModeAsync, GrabModeSync, None, None);
933 unsigned int modifiers[] = { 0, LockMask, numlockmask, numlockmask|LockMask };
936 XUngrabKey(dpy, AnyKey, AnyModifier, root);
937 for(i = 0; i < LENGTH(keys); i++) {
938 if((code = XKeysymToKeycode(dpy, keys[i].keysym)))
939 for(j = 0; j < LENGTH(modifiers); j++)
940 XGrabKey(dpy, code, keys[i].mod | modifiers[j], root,
941 True, GrabModeAsync, GrabModeAsync);
948 idxtomon(unsigned int n) {
952 for(m = mons, i = 0; m && i != n; m = m->next, i++);
955 #endif /* XINERAMA */
958 initfont(const char *fontstr) {
959 char *def, **missing;
963 dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
966 fprintf(stderr, "dwm: missing fontset: %s\n", missing[n]);
967 XFreeStringList(missing);
970 XFontSetExtents *font_extents;
971 XFontStruct **xfonts;
973 dc.font.ascent = dc.font.descent = 0;
974 font_extents = XExtentsOfFontSet(dc.font.set);
975 n = XFontsOfFontSet(dc.font.set, &xfonts, &font_names);
976 for(i = 0, dc.font.ascent = 0, dc.font.descent = 0; i < n; i++) {
977 dc.font.ascent = MAX(dc.font.ascent, (*xfonts)->ascent);
978 dc.font.descent = MAX(dc.font.descent,(*xfonts)->descent);
983 if(!(dc.font.xfont = XLoadQueryFont(dpy, fontstr))
984 && !(dc.font.xfont = XLoadQueryFont(dpy, "fixed")))
985 die("error, cannot load font: '%s'\n", fontstr);
986 dc.font.ascent = dc.font.xfont->ascent;
987 dc.font.descent = dc.font.xfont->descent;
989 dc.font.height = dc.font.ascent + dc.font.descent;
993 isprotodel(Client *c) {
998 if(XGetWMProtocols(dpy, c->win, &protocols, &n)) {
999 for(i = 0; !ret && i < n; i++)
1000 if(protocols[i] == wmatom[WMDelete])
1008 keypress(XEvent *e) {
1014 keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
1015 for(i = 0; i < LENGTH(keys); i++)
1016 if(keysym == keys[i].keysym
1017 && CLEANMASK(keys[i].mod) == CLEANMASK(ev->state)
1019 keys[i].func(&(keys[i].arg));
1023 killclient(const Arg *arg) {
1028 if(isprotodel(selmon->sel)) {
1029 ev.type = ClientMessage;
1030 ev.xclient.window = selmon->sel->win;
1031 ev.xclient.message_type = wmatom[WMProtocols];
1032 ev.xclient.format = 32;
1033 ev.xclient.data.l[0] = wmatom[WMDelete];
1034 ev.xclient.data.l[1] = CurrentTime;
1035 XSendEvent(dpy, selmon->sel->win, False, NoEventMask, &ev);
1038 XKillClient(dpy, selmon->sel->win);
1042 manage(Window w, XWindowAttributes *wa) {
1044 Client *c, *t = NULL;
1045 Window trans = None;
1048 if(!(c = malloc(sizeof(Client))))
1049 die("fatal: could not malloc() %u bytes\n", sizeof(Client));
1053 if(XGetTransientForHint(dpy, w, &trans))
1054 t = wintoclient(trans);
1065 c->x = wa->x + c->mon->wx;
1066 c->y = wa->y + c->mon->wy;
1069 c->oldbw = wa->border_width;
1070 if(c->w == c->mon->mw && c->h == c->mon->mh) {
1076 if(c->x + WIDTH(c) > c->mon->mx + c->mon->mw)
1077 c->x = c->mon->mx + c->mon->mw - WIDTH(c);
1078 if(c->y + HEIGHT(c) > c->mon->my + c->mon->mh)
1079 c->y = c->mon->my + c->mon->mh - HEIGHT(c);
1080 c->x = MAX(c->x, c->mon->mx);
1081 /* only fix client y-offset, if the client center might cover the bar */
1082 c->y = MAX(c->y, ((c->mon->by == 0) && (c->x + (c->w / 2) >= c->mon->wx)
1083 && (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);
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(!getrootpointer(&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 && lt[selmon->sellt]->arrange
1176 && (abs(nx - c->x) > snap || abs(ny - c->y) > snap))
1177 togglefloating(NULL);
1179 if(!lt[selmon->sellt]->arrange || c->isfloating)
1180 resize(c, nx, ny, c->w, c->h);
1184 while(ev.type != ButtonRelease);
1185 XUngrabPointer(dpy, CurrentTime);
1186 if((m = pointertomon(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 pointertomon(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) {
1252 if(applysizehints(c, &x, &y, &w, &h)) {
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);
1293 if(snap && nw >= selmon->wx && nw <= selmon->wx + selmon->ww
1294 && nh >= selmon->wy && nh <= selmon->wy + selmon->wh) {
1295 if(!c->isfloating && lt[selmon->sellt]->arrange
1296 && (abs(nw - c->w) > snap || abs(nh - c->h) > snap))
1297 togglefloating(NULL);
1299 if(!lt[selmon->sellt]->arrange || c->isfloating)
1300 resize(c, c->x, c->y, nw, nh);
1304 while(ev.type != ButtonRelease);
1305 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->bw - 1, c->h + c->bw - 1);
1306 XUngrabPointer(dpy, CurrentTime);
1307 while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
1308 if((m = pointertomon(c->x + c->w / 2, c->y + c->h / 2)) != selmon) {
1316 restack(Monitor *m) {
1324 if(m->sel->isfloating || !lt[m->sellt]->arrange)
1325 XRaiseWindow(dpy, m->sel->win);
1326 if(lt[m->sellt]->arrange) {
1327 wc.stack_mode = Below;
1328 wc.sibling = m->barwin;
1329 for(c = m->stack; c; c = c->snext)
1330 if(!c->isfloating && ISVISIBLE(c)) {
1331 XConfigureWindow(dpy, c->win, CWSibling|CWStackMode, &wc);
1332 wc.sibling = c->win;
1336 while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
1343 /* main event loop */
1345 while(running && !XNextEvent(dpy, &ev)) {
1346 if(handler[ev.type])
1347 (handler[ev.type])(&ev); /* call handler */
1353 unsigned int i, num;
1354 Window d1, d2, *wins = NULL;
1355 XWindowAttributes wa;
1357 if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
1358 for(i = 0; i < num; i++) {
1359 if(!XGetWindowAttributes(dpy, wins[i], &wa)
1360 || wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
1362 if(wa.map_state == IsViewable || getstate(wins[i]) == IconicState)
1363 manage(wins[i], &wa);
1365 for(i = 0; i < num; i++) { /* now the transients */
1366 if(!XGetWindowAttributes(dpy, wins[i], &wa))
1368 if(XGetTransientForHint(dpy, wins[i], &d1)
1369 && (wa.map_state == IsViewable || getstate(wins[i]) == IconicState))
1370 manage(wins[i], &wa);
1378 sendmon(Client *c, Monitor *m) {
1384 c->tags = m->tagset[m->seltags]; /* assign tags of target monitor */
1392 setclientstate(Client *c, long state) {
1393 long data[] = {state, None};
1395 XChangeProperty(dpy, c->win, wmatom[WMState], wmatom[WMState], 32,
1396 PropModeReplace, (unsigned char *)data, 2);
1400 setlayout(const Arg *arg) {
1401 if(!arg || !arg->v || arg->v != lt[selmon->sellt])
1404 lt[selmon->sellt] = (Layout *)arg->v;
1411 /* arg > 1.0 will set mfact absolutly */
1413 setmfact(const Arg *arg) {
1416 if(!arg || !lt[selmon->sellt]->arrange)
1418 f = arg->f < 1.0 ? arg->f + selmon->mfact : arg->f - 1.0;
1419 if(f < 0.1 || f > 0.9)
1429 XSetWindowAttributes wa;
1432 screen = DefaultScreen(dpy);
1433 root = RootWindow(dpy, screen);
1435 sw = DisplayWidth(dpy, screen);
1436 sh = DisplayHeight(dpy, screen);
1437 bh = dc.h = dc.font.height + 2;
1438 lt[0] = &layouts[0];
1439 lt[1] = &layouts[1 % LENGTH(layouts)];
1443 wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
1444 wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
1445 wmatom[WMState] = XInternAtom(dpy, "WM_STATE", False);
1446 netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
1447 netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
1450 cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
1451 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
1452 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
1454 /* init appearance */
1455 dc.norm[ColBorder] = getcolor(normbordercolor);
1456 dc.norm[ColBG] = getcolor(normbgcolor);
1457 dc.norm[ColFG] = getcolor(normfgcolor);
1458 dc.sel[ColBorder] = getcolor(selbordercolor);
1459 dc.sel[ColBG] = getcolor(selbgcolor);
1460 dc.sel[ColFG] = getcolor(selfgcolor);
1461 dc.drawable = XCreatePixmap(dpy, root, DisplayWidth(dpy, screen), bh, DefaultDepth(dpy, screen));
1462 dc.gc = XCreateGC(dpy, root, 0, NULL);
1463 XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
1465 XSetFont(dpy, dc.gc, dc.font.xfont->fid);
1468 for(blw = i = 0; LENGTH(layouts) > 1 && i < LENGTH(layouts); i++) {
1469 w = TEXTW(layouts[i].symbol);
1475 /* EWMH support per view */
1476 XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
1477 PropModeReplace, (unsigned char *) netatom, NetLast);
1479 /* select for events */
1480 wa.cursor = cursor[CurNormal];
1481 wa.event_mask = SubstructureRedirectMask|SubstructureNotifyMask|ButtonPressMask
1482 |EnterWindowMask|LeaveWindowMask|StructureNotifyMask
1483 |PropertyChangeMask;
1484 XChangeWindowAttributes(dpy, root, CWEventMask|CWCursor, &wa);
1485 XSelectInput(dpy, root, wa.event_mask);
1491 showhide(Client *c) {
1494 if(ISVISIBLE(c)) { /* show clients top down */
1495 XMoveWindow(dpy, c->win, c->x, c->y);
1496 if(!lt[c->mon->sellt]->arrange || c->isfloating)
1497 resize(c, c->x, c->y, c->w, c->h);
1500 else { /* hide clients bottom up */
1502 XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
1508 sigchld(int signal) {
1509 while(0 < waitpid(-1, NULL, WNOHANG));
1513 spawn(const Arg *arg) {
1514 signal(SIGCHLD, sigchld);
1517 close(ConnectionNumber(dpy));
1519 execvp(((char **)arg->v)[0], (char **)arg->v);
1520 fprintf(stderr, "dwm: execvp %s", ((char **)arg->v)[0]);
1527 tag(const Arg *arg) {
1528 if(selmon->sel && arg->ui & TAGMASK) {
1529 selmon->sel->tags = arg->ui & TAGMASK;
1536 tagmon(const Arg *arg) {
1539 if(!selmon->sel || !(m = idxtomon(arg->ui)))
1541 sendmon(selmon->sel, m);
1543 #endif /* XINERAMA */
1546 textnw(const char *text, unsigned int len) {
1550 XmbTextExtents(dc.font.set, text, len, NULL, &r);
1553 return XTextWidth(dc.font.xfont, text, len);
1562 for(n = 0, c = nexttiled(m->clients); c; c = nexttiled(c->next), n++);
1567 c = nexttiled(m->clients);
1568 mw = m->mfact * m->ww;
1569 resize(c, m->wx, m->wy, (n == 1 ? m->ww : mw) - 2 * c->bw, m->wh - 2 * c->bw);
1575 x = (m->wx + mw > c->x + c->w) ? c->x + c->w + 2 * c->bw : m->wx + mw;
1577 w = (m->wx + mw > c->x + c->w) ? m->wx + m->ww - x : m->ww - mw;
1582 for(i = 0, c = nexttiled(c->next); c; c = nexttiled(c->next), i++) {
1583 resize(c, x, y, w - 2 * c->bw, /* remainder */ ((i + 1 == n)
1584 ? m->wy + m->wh - y - 2 * c->bw : h - 2 * c->bw));
1586 y = c->y + HEIGHT(c);
1591 togglebar(const Arg *arg) {
1592 selmon->showbar = !selmon->showbar;
1593 updatebarpos(selmon);
1594 XMoveResizeWindow(dpy, selmon->barwin, selmon->wx, selmon->by, selmon->ww, bh);
1599 togglefloating(const Arg *arg) {
1602 selmon->sel->isfloating = !selmon->sel->isfloating || selmon->sel->isfixed;
1603 if(selmon->sel->isfloating)
1604 resize(selmon->sel, selmon->sel->x, selmon->sel->y, selmon->sel->w, selmon->sel->h);
1609 toggletag(const Arg *arg) {
1615 mask = selmon->sel->tags ^ (arg->ui & TAGMASK);
1617 selmon->sel->tags = mask;
1623 toggleview(const Arg *arg) {
1624 unsigned int mask = selmon->tagset[selmon->seltags] ^ (arg->ui & TAGMASK);
1627 selmon->tagset[selmon->seltags] = mask;
1633 unfocus(Client *c) {
1636 grabbuttons(c, False);
1637 XSetWindowBorder(dpy, c->win, dc.norm[ColBorder]);
1638 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
1642 unmanage(Client *c) {
1645 wc.border_width = c->oldbw;
1646 /* The server grab construct avoids race conditions. */
1648 XSetErrorHandler(xerrordummy);
1649 XConfigureWindow(dpy, c->win, CWBorderWidth, &wc); /* restore border */
1652 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
1653 setclientstate(c, WithdrawnState);
1656 XSetErrorHandler(xerror);
1663 unmapnotify(XEvent *e) {
1665 XUnmapEvent *ev = &e->xunmap;
1667 if((c = wintoclient(ev->window)))
1674 XSetWindowAttributes wa;
1676 wa.override_redirect = True;
1677 wa.background_pixmap = ParentRelative;
1678 wa.event_mask = ButtonPressMask|ExposureMask;
1680 for(m = mons; m; m = m->next) {
1681 m->barwin = XCreateWindow(dpy, root, m->wx, m->by, m->ww, bh, 0, DefaultDepth(dpy, screen),
1683 CopyFromParent, DefaultVisual(dpy, screen),
1684 CWOverrideRedirect|CWBackPixmap|CWEventMask, &wa);
1685 XDefineCursor(dpy, m->barwin, cursor[CurNormal]);
1686 XMapRaised(dpy, m->barwin);
1691 updatebarpos(Monitor *m) {
1696 m->by = m->topbar ? m->wy : m->wy + m->wh;
1697 m->wy = m->topbar ? m->wy + bh : m->wy;
1707 Monitor *newmons = NULL, *m, *tm;
1710 XineramaScreenInfo *info = NULL;
1712 if(XineramaIsActive(dpy))
1713 info = XineramaQueryScreens(dpy, &n);
1714 #endif /* XINERAMA */
1715 /* allocate monitor(s) for the new geometry setup */
1716 for(i = 0; i < n; i++) {
1717 m = (Monitor *)malloc(sizeof(Monitor));
1722 /* initialise monitor(s) */
1724 if(XineramaIsActive(dpy)) {
1725 for(i = 0, m = newmons; m; m = m->next, i++) {
1726 m->screen_number = info[i].screen_number;
1727 m->mx = m->wx = info[i].x_org;
1728 m->my = m->wy = info[i].y_org;
1729 m->mw = m->ww = info[i].width;
1730 m->mh = m->wh = info[i].height;
1735 #endif /* XINERAMA */
1736 /* default monitor setup */
1738 m->screen_number = 0;
1745 /* bar geometry setup */
1746 for(m = newmons; m; m = m->next) {
1747 m->sel = m->stack = m->clients = NULL;
1750 m->tagset[0] = m->tagset[1] = 1;
1752 m->showbar = SHOWBAR;
1757 /* reassign left over clients of disappeared monitors */
1758 for(tm = mons; tm; tm = tm->next)
1759 while(tm->clients) {
1761 tm->clients = c->next;
1768 /* select focused monitor */
1771 selmon = wintomon(root);
1775 updatenumlockmask(void) {
1777 XModifierKeymap *modmap;
1780 modmap = XGetModifierMapping(dpy);
1781 for(i = 0; i < 8; i++)
1782 for(j = 0; j < modmap->max_keypermod; j++)
1783 if(modmap->modifiermap[i * modmap->max_keypermod + j]
1784 == XKeysymToKeycode(dpy, XK_Num_Lock))
1785 numlockmask = (1 << i);
1786 XFreeModifiermap(modmap);
1790 updatesizehints(Client *c) {
1794 if(!XGetWMNormalHints(dpy, c->win, &size, &msize))
1795 /* size is uninitialized, ensure that size.flags aren't used */
1797 if(size.flags & PBaseSize) {
1798 c->basew = size.base_width;
1799 c->baseh = size.base_height;
1801 else if(size.flags & PMinSize) {
1802 c->basew = size.min_width;
1803 c->baseh = size.min_height;
1806 c->basew = c->baseh = 0;
1807 if(size.flags & PResizeInc) {
1808 c->incw = size.width_inc;
1809 c->inch = size.height_inc;
1812 c->incw = c->inch = 0;
1813 if(size.flags & PMaxSize) {
1814 c->maxw = size.max_width;
1815 c->maxh = size.max_height;
1818 c->maxw = c->maxh = 0;
1819 if(size.flags & PMinSize) {
1820 c->minw = size.min_width;
1821 c->minh = size.min_height;
1823 else if(size.flags & PBaseSize) {
1824 c->minw = size.base_width;
1825 c->minh = size.base_height;
1828 c->minw = c->minh = 0;
1829 if(size.flags & PAspect) {
1830 c->mina = (float)size.min_aspect.y / (float)size.min_aspect.x;
1831 c->maxa = (float)size.max_aspect.x / (float)size.max_aspect.y;
1834 c->maxa = c->mina = 0.0;
1835 c->isfixed = (c->maxw && c->minw && c->maxh && c->minh
1836 && c->maxw == c->minw && c->maxh == c->minh);
1840 updatetitle(Client *c) {
1841 if(!gettextprop(c->win, netatom[NetWMName], c->name, sizeof c->name))
1842 gettextprop(c->win, XA_WM_NAME, c->name, sizeof c->name);
1846 updatestatus(void) {
1847 if(!gettextprop(root, XA_WM_NAME, stext, sizeof(stext)))
1848 strcpy(stext, "dwm-"VERSION);
1853 updatewmhints(Client *c) {
1856 if((wmh = XGetWMHints(dpy, c->win))) {
1857 if(c == selmon->sel && wmh->flags & XUrgencyHint) {
1858 wmh->flags &= ~XUrgencyHint;
1859 XSetWMHints(dpy, c->win, wmh);
1862 c->isurgent = (wmh->flags & XUrgencyHint) ? True : False;
1869 view(const Arg *arg) {
1870 if((arg->ui & TAGMASK) == selmon->tagset[selmon->seltags])
1872 selmon->seltags ^= 1; /* toggle sel tagset */
1873 if(arg->ui & TAGMASK)
1874 selmon->tagset[selmon->seltags] = arg->ui & TAGMASK;
1879 wintoclient(Window w) {
1883 for(m = mons; m; m = m->next)
1884 for(c = m->clients; c; c = c->next)
1891 wintomon(Window w) {
1896 if(w == root && getrootpointer(&x, &y))
1897 return pointertomon(x, y);
1898 for(m = mons; m; m = m->next)
1901 if((c = wintoclient(w)))
1906 /* There's no way to check accesses to destroyed windows, thus those cases are
1907 * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
1908 * default error handler, which may call exit. */
1910 xerror(Display *dpy, XErrorEvent *ee) {
1911 if(ee->error_code == BadWindow
1912 || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
1913 || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
1914 || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
1915 || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
1916 || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
1917 || (ee->request_code == X_GrabButton && ee->error_code == BadAccess)
1918 || (ee->request_code == X_GrabKey && ee->error_code == BadAccess)
1919 || (ee->request_code == X_CopyArea && ee->error_code == BadDrawable))
1921 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
1922 ee->request_code, ee->error_code);
1923 return xerrorxlib(dpy, ee); /* may call exit */
1927 xerrordummy(Display *dpy, XErrorEvent *ee) {
1931 /* Startup Error handler to check if another window manager
1932 * is already running. */
1934 xerrorstart(Display *dpy, XErrorEvent *ee) {
1940 zoom(const Arg *arg) {
1941 Client *c = selmon->sel;
1943 if(!lt[selmon->sellt]->arrange || lt[selmon->sellt]->arrange == monocle || (selmon->sel && selmon->sel->isfloating))
1945 if(c == nexttiled(selmon->clients))
1946 if(!c || !(c = nexttiled(c->next)))
1955 main(int argc, char *argv[]) {
1956 if(argc == 2 && !strcmp("-v", argv[1]))
1957 die("dwm-"VERSION", © 2006-2009 dwm engineers, see LICENSE for details\n");
1959 die("usage: dwm [-v]\n");
1961 if(!setlocale(LC_CTYPE, "") || !XSupportsLocale())
1962 fputs("warning: no locale support\n", stderr);
1964 if(!(dpy = XOpenDisplay(NULL)))
1965 die("dwm: cannot open display\n");