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 ((1 << 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 *);
127 int by; /* bar geometry */
128 int mx, my, mw, mh; /* screen size */
129 int wx, wy, ww, wh; /* window area */
130 unsigned int seltags;
132 unsigned int tagset[2];
145 const char *instance;
152 /* function declarations */
153 static void applyrules(Client *c);
154 static Bool applysizehints(Client *c, int *x, int *y, int *w, int *h, Bool interact);
155 static void arrange(void);
156 static void attach(Client *c);
157 static void attachstack(Client *c);
158 static void buttonpress(XEvent *e);
159 static void checkotherwm(void);
160 static void cleanup(void);
161 static void cleanupmon(Monitor *mon);
162 static void clearurgent(Client *c);
163 static void configure(Client *c);
164 static void configurenotify(XEvent *e);
165 static void configurerequest(XEvent *e);
166 static Monitor *createmon(void);
167 static void destroynotify(XEvent *e);
168 static void detach(Client *c);
169 static void detachstack(Client *c);
170 static void die(const char *errstr, ...);
171 static Monitor *dirtomon(int dir);
172 static void drawbar(Monitor *m);
173 static void drawbars(void);
174 static void drawsquare(Bool filled, Bool empty, Bool invert, unsigned long col[ColLast]);
175 static void drawtext(const char *text, unsigned long col[ColLast], Bool invert);
176 static void enternotify(XEvent *e);
177 static void expose(XEvent *e);
178 static void focus(Client *c);
179 static void focusin(XEvent *e);
180 static void focusmon(const Arg *arg);
181 static void focusstack(const Arg *arg);
182 static unsigned long getcolor(const char *colstr);
183 static Bool getrootptr(int *x, int *y);
184 static long getstate(Window w);
185 static Bool gettextprop(Window w, Atom atom, char *text, unsigned int size);
186 static void grabbuttons(Client *c, Bool focused);
187 static void grabkeys(void);
188 static void initfont(const char *fontstr);
189 static Bool isprotodel(Client *c);
190 static void keypress(XEvent *e);
191 static void killclient(const Arg *arg);
192 static void manage(Window w, XWindowAttributes *wa);
193 static void mappingnotify(XEvent *e);
194 static void maprequest(XEvent *e);
195 static void monocle(Monitor *m);
196 static void movemouse(const Arg *arg);
197 static Client *nexttiled(Client *c);
198 static Monitor *ptrtomon(int x, int y);
199 static void propertynotify(XEvent *e);
200 static void quit(const Arg *arg);
201 static void resize(Client *c, int x, int y, int w, int h, Bool interact);
202 static void resizemouse(const Arg *arg);
203 static void restack(Monitor *m);
204 static void run(void);
205 static void scan(void);
206 static void sendmon(Client *c, Monitor *m);
207 static void setclientstate(Client *c, long state);
208 static void setlayout(const Arg *arg);
209 static void setmfact(const Arg *arg);
210 static void setup(void);
211 static void showhide(Client *c);
212 static void sigchld(int unused);
213 static void spawn(const Arg *arg);
214 static void tag(const Arg *arg);
215 static void tagmon(const Arg *arg);
216 static int textnw(const char *text, unsigned int len);
217 static void tile(Monitor *);
218 static void togglebar(const Arg *arg);
219 static void togglefloating(const Arg *arg);
220 static void toggletag(const Arg *arg);
221 static void toggleview(const Arg *arg);
222 static void unfocus(Client *c);
223 static void unmanage(Client *c, Bool destroyed);
224 static void unmapnotify(XEvent *e);
225 static Bool updategeom(void);
226 static void updatebarpos(Monitor *m);
227 static void updatebars(void);
228 static void updatenumlockmask(void);
229 static void updatesizehints(Client *c);
230 static void updatestatus(void);
231 static void updatetitle(Client *c);
232 static void updatewmhints(Client *c);
233 static void view(const Arg *arg);
234 static Client *wintoclient(Window w);
235 static Monitor *wintomon(Window w);
236 static int xerror(Display *dpy, XErrorEvent *ee);
237 static int xerrordummy(Display *dpy, XErrorEvent *ee);
238 static int xerrorstart(Display *dpy, XErrorEvent *ee);
239 static void zoom(const Arg *arg);
242 static const char broken[] = "broken";
243 static char stext[256];
245 static int sw, sh; /* X display screen geometry width, height */
246 static int bh, blw = 0; /* bar geometry */
247 static int (*xerrorxlib)(Display *, XErrorEvent *);
248 static unsigned int numlockmask = 0;
249 static void (*handler[LASTEvent]) (XEvent *) = {
250 [ButtonPress] = buttonpress,
251 [ConfigureRequest] = configurerequest,
252 [ConfigureNotify] = configurenotify,
253 [DestroyNotify] = destroynotify,
254 [EnterNotify] = enternotify,
257 [KeyPress] = keypress,
258 [MappingNotify] = mappingnotify,
259 [MapRequest] = maprequest,
260 [PropertyNotify] = propertynotify,
261 [UnmapNotify] = unmapnotify
263 static Atom wmatom[WMLast], netatom[NetLast];
265 static Bool running = True;
266 static Cursor cursor[CurLast];
269 static Monitor *mons = NULL, *selmon = NULL;
272 /* configuration, allows nested code to access above variables */
275 /* compile-time check if all tags fit into an unsigned int bit array. */
276 struct NumTags { char limitexceeded[LENGTH(tags) > 31 ? -1 : 1]; };
278 /* function implementations */
280 applyrules(Client *c) {
281 const char *class, *instance;
285 XClassHint ch = { 0 };
288 c->isfloating = c->tags = 0;
289 if(XGetClassHint(dpy, c->win, &ch)) {
290 class = ch.res_class ? ch.res_class : broken;
291 instance = ch.res_name ? ch.res_name : broken;
292 for(i = 0; i < LENGTH(rules); i++) {
294 if((!r->title || strstr(c->name, r->title))
295 && (!r->class || strstr(class, r->class))
296 && (!r->instance || strstr(instance, r->instance)))
298 c->isfloating = r->isfloating;
300 for(m = mons; m && m->num != r->monitor; m = m->next);
310 c->tags = c->tags & TAGMASK ? c->tags & TAGMASK : c->mon->tagset[c->mon->seltags];
314 applysizehints(Client *c, int *x, int *y, int *w, int *h, Bool interact) {
318 /* set minimum possible */
326 if(*x + *w + 2 * c->bw < 0)
328 if(*y + *h + 2 * c->bw < 0)
332 if(*x > m->mx + m->mw)
333 *x = m->mx + m->mw - WIDTH(c);
334 if(*y > m->my + m->mh)
335 *y = m->my + m->mh - HEIGHT(c);
336 if(*x + *w + 2 * c->bw < m->mx)
338 if(*y + *h + 2 * c->bw < m->my)
345 if(resizehints || c->isfloating) {
346 /* see last two sentences in ICCCM 4.1.2.3 */
347 baseismin = c->basew == c->minw && c->baseh == c->minh;
348 if(!baseismin) { /* temporarily remove base dimensions */
352 /* adjust for aspect limits */
353 if(c->mina > 0 && c->maxa > 0) {
354 if(c->maxa < (float)*w / *h)
355 *w = *h * c->maxa + 0.5;
356 else if(c->mina < (float)*h / *w)
357 *h = *w * c->mina + 0.5;
359 if(baseismin) { /* increment calculation requires this */
363 /* adjust for increment value */
368 /* restore base dimensions */
371 *w = MAX(*w, c->minw);
372 *h = MAX(*h, c->minh);
374 *w = MIN(*w, c->maxw);
376 *h = MIN(*h, c->maxh);
378 return *x != c->x || *y != c->y || *w != c->w || *h != c->h;
385 for(m = mons; m; m = m->next)
388 for(m = mons; m; m = m->next) {
389 strncpy(m->ltsymbol, m->lt[m->sellt]->symbol, sizeof m->ltsymbol);
390 if(m->lt[m->sellt]->arrange)
391 m->lt[m->sellt]->arrange(m);
398 c->next = c->mon->clients;
403 attachstack(Client *c) {
404 c->snext = c->mon->stack;
409 buttonpress(XEvent *e) {
410 unsigned int i, x, click;
414 XButtonPressedEvent *ev = &e->xbutton;
417 /* focus monitor if necessary */
418 if((m = wintomon(ev->window)) && m != selmon) {
419 unfocus(selmon->sel);
423 if(ev->window == selmon->barwin) {
427 } while(ev->x >= x && ++i < LENGTH(tags));
428 if(i < LENGTH(tags)) {
432 else if(ev->x < x + blw)
434 else if(ev->x > selmon->wx + selmon->ww - TEXTW(stext))
435 click = ClkStatusText;
439 else if((c = wintoclient(ev->window))) {
441 click = ClkClientWin;
443 for(i = 0; i < LENGTH(buttons); i++)
444 if(click == buttons[i].click && buttons[i].func && buttons[i].button == ev->button
445 && CLEANMASK(buttons[i].mask) == CLEANMASK(ev->state))
446 buttons[i].func(click == ClkTagBar && buttons[i].arg.i == 0 ? &arg : &buttons[i].arg);
452 xerrorxlib = XSetErrorHandler(xerrorstart);
453 /* this causes an error if some other window manager is running */
454 XSelectInput(dpy, DefaultRootWindow(dpy), SubstructureRedirectMask);
457 die("dwm: another window manager is already running\n");
458 XSetErrorHandler(xerror);
465 Layout foo = { "", NULL };
469 selmon->lt[selmon->sellt] = &foo;
470 for(m = mons; m; m = m->next)
472 unmanage(m->stack, False);
474 XFreeFontSet(dpy, dc.font.set);
476 XFreeFont(dpy, dc.font.xfont);
477 XUngrabKey(dpy, AnyKey, AnyModifier, root);
478 XFreePixmap(dpy, dc.drawable);
480 XFreeCursor(dpy, cursor[CurNormal]);
481 XFreeCursor(dpy, cursor[CurResize]);
482 XFreeCursor(dpy, cursor[CurMove]);
486 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
490 cleanupmon(Monitor *mon) {
496 for(m = mons; m && m->next != mon; m = m->next);
499 XUnmapWindow(dpy, mon->barwin);
500 XDestroyWindow(dpy, mon->barwin);
505 clearurgent(Client *c) {
509 if(!(wmh = XGetWMHints(dpy, c->win)))
511 wmh->flags &= ~XUrgencyHint;
512 XSetWMHints(dpy, c->win, wmh);
517 configure(Client *c) {
520 ce.type = ConfigureNotify;
528 ce.border_width = c->bw;
530 ce.override_redirect = False;
531 XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&ce);
535 configurenotify(XEvent *e) {
537 XConfigureEvent *ev = &e->xconfigure;
539 if(ev->window == root) {
544 XFreePixmap(dpy, dc.drawable);
545 dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
547 for(m = mons; m; m = m->next)
548 XMoveResizeWindow(dpy, m->barwin, m->wx, m->by, m->ww, bh);
555 configurerequest(XEvent *e) {
558 XConfigureRequestEvent *ev = &e->xconfigurerequest;
561 if((c = wintoclient(ev->window))) {
562 if(ev->value_mask & CWBorderWidth)
563 c->bw = ev->border_width;
564 else if(c->isfloating || !selmon->lt[selmon->sellt]->arrange) {
566 if(ev->value_mask & CWX)
567 c->x = m->mx + ev->x;
568 if(ev->value_mask & CWY)
569 c->y = m->my + ev->y;
570 if(ev->value_mask & CWWidth)
572 if(ev->value_mask & CWHeight)
574 if((c->x + c->w) > m->mx + m->mw && c->isfloating)
575 c->x = m->mx + (m->mw / 2 - c->w / 2); /* center in x direction */
576 if((c->y + c->h) > m->my + m->mh && c->isfloating)
577 c->y = m->my + (m->mh / 2 - c->h / 2); /* center in y direction */
578 if((ev->value_mask & (CWX|CWY)) && !(ev->value_mask & (CWWidth|CWHeight)))
581 XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
589 wc.width = ev->width;
590 wc.height = ev->height;
591 wc.border_width = ev->border_width;
592 wc.sibling = ev->above;
593 wc.stack_mode = ev->detail;
594 XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
603 if(!(m = (Monitor *)calloc(1, sizeof(Monitor))))
604 die("fatal: could not malloc() %u bytes\n", sizeof(Monitor));
605 m->tagset[0] = m->tagset[1] = 1;
607 m->showbar = showbar;
609 m->lt[0] = &layouts[0];
610 m->lt[1] = &layouts[1 % LENGTH(layouts)];
611 strncpy(m->ltsymbol, layouts[0].symbol, sizeof m->ltsymbol);
616 destroynotify(XEvent *e) {
618 XDestroyWindowEvent *ev = &e->xdestroywindow;
620 if((c = wintoclient(ev->window)))
628 for(tc = &c->mon->clients; *tc && *tc != c; tc = &(*tc)->next);
633 detachstack(Client *c) {
636 for(tc = &c->mon->stack; *tc && *tc != c; tc = &(*tc)->snext);
639 if(c == c->mon->sel) {
640 for(t = c->mon->stack; t && !ISVISIBLE(t); t = t->snext);
646 die(const char *errstr, ...) {
649 va_start(ap, errstr);
650 vfprintf(stderr, errstr, ap);
660 if(!(m = selmon->next))
665 for(m = mons; m->next; m = m->next);
667 for(m = mons; m->next != selmon; m = m->next);
673 drawbar(Monitor *m) {
675 unsigned int i, occ = 0, urg = 0;
679 for(c = m->clients; c; c = c->next) {
685 for(i = 0; i < LENGTH(tags); i++) {
686 dc.w = TEXTW(tags[i]);
687 col = m->tagset[m->seltags] & 1 << i ? dc.sel : dc.norm;
688 drawtext(tags[i], col, urg & 1 << i);
689 drawsquare(m == selmon && selmon->sel && selmon->sel->tags & 1 << i,
690 occ & 1 << i, urg & 1 << i, col);
693 dc.w = blw = TEXTW(m->ltsymbol);
694 drawtext(m->ltsymbol, dc.norm, False);
697 if(m == selmon) { /* status is only drawn on selected monitor */
704 drawtext(stext, dc.norm, False);
708 if((dc.w = dc.x - x) > bh) {
711 col = m == selmon ? dc.sel : dc.norm;
712 drawtext(m->sel->name, col, False);
713 drawsquare(m->sel->isfixed, m->sel->isfloating, False, col);
716 drawtext(NULL, dc.norm, False);
718 XCopyArea(dpy, dc.drawable, m->barwin, dc.gc, 0, 0, m->ww, bh, 0, 0);
726 for(m = mons; m; m = m->next)
731 drawsquare(Bool filled, Bool empty, Bool invert, unsigned long col[ColLast]) {
734 XRectangle r = { dc.x, dc.y, dc.w, dc.h };
736 gcv.foreground = col[invert ? ColBG : ColFG];
737 XChangeGC(dpy, dc.gc, GCForeground, &gcv);
738 x = (dc.font.ascent + dc.font.descent + 2) / 4;
742 r.width = r.height = x + 1;
743 XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
746 r.width = r.height = x;
747 XDrawRectangles(dpy, dc.drawable, dc.gc, &r, 1);
752 drawtext(const char *text, unsigned long col[ColLast], Bool invert) {
754 int i, x, y, h, len, olen;
755 XRectangle r = { dc.x, dc.y, dc.w, dc.h };
757 XSetForeground(dpy, dc.gc, col[invert ? ColFG : ColBG]);
758 XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
762 h = dc.font.ascent + dc.font.descent;
763 y = dc.y + (dc.h / 2) - (h / 2) + dc.font.ascent;
765 /* shorten text if necessary */
766 for(len = MIN(olen, sizeof buf); len && textnw(text, len) > dc.w - h; len--);
769 memcpy(buf, text, len);
771 for(i = len; i && i > len - 3; buf[--i] = '.');
772 XSetForeground(dpy, dc.gc, col[invert ? ColBG : ColFG]);
774 XmbDrawString(dpy, dc.drawable, dc.font.set, dc.gc, x, y, buf, len);
776 XDrawString(dpy, dc.drawable, dc.gc, x, y, buf, len);
780 enternotify(XEvent *e) {
783 XCrossingEvent *ev = &e->xcrossing;
785 if((ev->mode != NotifyNormal || ev->detail == NotifyInferior) && ev->window != root)
787 if((m = wintomon(ev->window)) && m != selmon) {
788 unfocus(selmon->sel);
791 if((c = wintoclient(ev->window)))
800 XExposeEvent *ev = &e->xexpose;
802 if(ev->count == 0 && (m = wintomon(ev->window)))
808 if(!c || !ISVISIBLE(c))
809 for(c = selmon->stack; c && !ISVISIBLE(c); c = c->snext);
811 unfocus(selmon->sel);
819 grabbuttons(c, True);
820 XSetWindowBorder(dpy, c->win, dc.sel[ColBorder]);
821 XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
824 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
830 focusin(XEvent *e) { /* there are some broken focus acquiring clients */
831 XFocusChangeEvent *ev = &e->xfocus;
833 if(selmon->sel && ev->window != selmon->sel->win)
834 XSetInputFocus(dpy, selmon->sel->win, RevertToPointerRoot, CurrentTime);
838 focusmon(const Arg *arg) {
843 m = dirtomon(arg->i);
844 unfocus(selmon->sel);
850 focusstack(const Arg *arg) {
851 Client *c = NULL, *i;
856 for(c = selmon->sel->next; c && !ISVISIBLE(c); c = c->next);
858 for(c = selmon->clients; c && !ISVISIBLE(c); c = c->next);
861 for(i = selmon->clients; i != selmon->sel; i = i->next)
865 for(; i; i = i->next)
876 getcolor(const char *colstr) {
877 Colormap cmap = DefaultColormap(dpy, screen);
880 if(!XAllocNamedColor(dpy, cmap, colstr, &color, &color))
881 die("error, cannot allocate color '%s'\n", colstr);
886 getrootptr(int *x, int *y) {
891 return XQueryPointer(dpy, root, &dummy, &dummy, x, y, &di, &di, &dui);
898 unsigned char *p = NULL;
899 unsigned long n, extra;
902 status = XGetWindowProperty(dpy, w, wmatom[WMState], 0L, 2L, False, wmatom[WMState],
903 &real, &format, &n, &extra, (unsigned char **)&p);
904 if(status != Success)
913 gettextprop(Window w, Atom atom, char *text, unsigned int size) {
918 if(!text || size == 0)
921 XGetTextProperty(dpy, w, &name, atom);
924 if(name.encoding == XA_STRING)
925 strncpy(text, (char *)name.value, size - 1);
927 if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success && n > 0 && *list) {
928 strncpy(text, *list, size - 1);
929 XFreeStringList(list);
932 text[size - 1] = '\0';
938 grabbuttons(Client *c, Bool focused) {
942 unsigned int modifiers[] = { 0, LockMask, numlockmask, numlockmask|LockMask };
943 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
945 for(i = 0; i < LENGTH(buttons); i++)
946 if(buttons[i].click == ClkClientWin)
947 for(j = 0; j < LENGTH(modifiers); j++)
948 XGrabButton(dpy, buttons[i].button,
949 buttons[i].mask | modifiers[j],
950 c->win, False, BUTTONMASK,
951 GrabModeAsync, GrabModeSync, None, None);
954 XGrabButton(dpy, AnyButton, AnyModifier, c->win, False,
955 BUTTONMASK, GrabModeAsync, GrabModeSync, None, None);
964 unsigned int modifiers[] = { 0, LockMask, numlockmask, numlockmask|LockMask };
967 XUngrabKey(dpy, AnyKey, AnyModifier, root);
968 for(i = 0; i < LENGTH(keys); i++) {
969 if((code = XKeysymToKeycode(dpy, keys[i].keysym)))
970 for(j = 0; j < LENGTH(modifiers); j++)
971 XGrabKey(dpy, code, keys[i].mod | modifiers[j], root,
972 True, GrabModeAsync, GrabModeAsync);
978 initfont(const char *fontstr) {
979 char *def, **missing;
983 dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
986 fprintf(stderr, "dwm: missing fontset: %s\n", missing[n]);
987 XFreeStringList(missing);
990 XFontSetExtents *font_extents;
991 XFontStruct **xfonts;
994 dc.font.ascent = dc.font.descent = 0;
995 font_extents = XExtentsOfFontSet(dc.font.set);
996 n = XFontsOfFontSet(dc.font.set, &xfonts, &font_names);
997 for(i = 0, dc.font.ascent = 0, dc.font.descent = 0; i < n; i++) {
998 dc.font.ascent = MAX(dc.font.ascent, (*xfonts)->ascent);
999 dc.font.descent = MAX(dc.font.descent,(*xfonts)->descent);
1004 if(!(dc.font.xfont = XLoadQueryFont(dpy, fontstr))
1005 && !(dc.font.xfont = XLoadQueryFont(dpy, "fixed")))
1006 die("error, cannot load font: '%s'\n", fontstr);
1007 dc.font.ascent = dc.font.xfont->ascent;
1008 dc.font.descent = dc.font.xfont->descent;
1010 dc.font.height = dc.font.ascent + dc.font.descent;
1014 isprotodel(Client *c) {
1019 if(XGetWMProtocols(dpy, c->win, &protocols, &n)) {
1020 for(i = 0; !ret && i < n; i++)
1021 if(protocols[i] == wmatom[WMDelete])
1030 isuniquegeom(XineramaScreenInfo *unique, size_t len, XineramaScreenInfo *info) {
1033 for(i = 0; i < len; i++)
1034 if(unique[i].x_org == info->x_org && unique[i].y_org == info->y_org
1035 && unique[i].width == info->width && unique[i].height == info->height)
1039 #endif /* XINERAMA */
1042 keypress(XEvent *e) {
1048 keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
1049 for(i = 0; i < LENGTH(keys); i++)
1050 if(keysym == keys[i].keysym
1051 && CLEANMASK(keys[i].mod) == CLEANMASK(ev->state)
1053 keys[i].func(&(keys[i].arg));
1057 killclient(const Arg *arg) {
1062 if(isprotodel(selmon->sel)) {
1063 ev.type = ClientMessage;
1064 ev.xclient.window = selmon->sel->win;
1065 ev.xclient.message_type = wmatom[WMProtocols];
1066 ev.xclient.format = 32;
1067 ev.xclient.data.l[0] = wmatom[WMDelete];
1068 ev.xclient.data.l[1] = CurrentTime;
1069 XSendEvent(dpy, selmon->sel->win, False, NoEventMask, &ev);
1073 XSetErrorHandler(xerrordummy);
1074 XSetCloseDownMode(dpy, DestroyAll);
1075 XKillClient(dpy, selmon->sel->win);
1077 XSetErrorHandler(xerror);
1083 manage(Window w, XWindowAttributes *wa) {
1085 Client *c, *t = NULL;
1086 Window trans = None;
1089 if(!(c = malloc(sizeof(Client))))
1090 die("fatal: could not malloc() %u bytes\n", sizeof(Client));
1094 if(XGetTransientForHint(dpy, w, &trans))
1095 t = wintoclient(trans);
1105 c->x = wa->x + c->mon->wx;
1106 c->y = wa->y + c->mon->wy;
1109 c->oldbw = wa->border_width;
1110 if(c->w == c->mon->mw && c->h == c->mon->mh) {
1116 if(c->x + WIDTH(c) > c->mon->mx + c->mon->mw)
1117 c->x = c->mon->mx + c->mon->mw - WIDTH(c);
1118 if(c->y + HEIGHT(c) > c->mon->my + c->mon->mh)
1119 c->y = c->mon->my + c->mon->mh - HEIGHT(c);
1120 c->x = MAX(c->x, c->mon->mx);
1121 /* only fix client y-offset, if the client center might cover the bar */
1122 c->y = MAX(c->y, ((c->mon->by == 0) && (c->x + (c->w / 2) >= c->mon->wx)
1123 && (c->x + (c->w / 2) < c->mon->wx + c->mon->ww)) ? bh : c->mon->my);
1126 wc.border_width = c->bw;
1127 XConfigureWindow(dpy, w, CWBorderWidth, &wc);
1128 XSetWindowBorder(dpy, w, dc.norm[ColBorder]);
1129 configure(c); /* propagates border_width, if size doesn't change */
1131 XSelectInput(dpy, w, EnterWindowMask|FocusChangeMask|PropertyChangeMask|StructureNotifyMask);
1132 grabbuttons(c, False);
1134 c->isfloating = trans != None || c->isfixed;
1136 XRaiseWindow(dpy, c->win);
1139 XMoveResizeWindow(dpy, c->win, c->x + 2 * sw, c->y, c->w, c->h); /* some windows require this */
1140 XMapWindow(dpy, c->win);
1141 setclientstate(c, NormalState);
1146 mappingnotify(XEvent *e) {
1147 XMappingEvent *ev = &e->xmapping;
1149 XRefreshKeyboardMapping(ev);
1150 if(ev->request == MappingKeyboard)
1155 maprequest(XEvent *e) {
1156 static XWindowAttributes wa;
1157 XMapRequestEvent *ev = &e->xmaprequest;
1159 if(!XGetWindowAttributes(dpy, ev->window, &wa))
1161 if(wa.override_redirect)
1163 if(!wintoclient(ev->window))
1164 manage(ev->window, &wa);
1168 monocle(Monitor *m) {
1172 for(c = m->clients; c; c = c->next)
1175 if(n > 0) /* override layout symbol */
1176 snprintf(m->ltsymbol, sizeof m->ltsymbol, "[%d]", n);
1177 for(c = nexttiled(m->clients); c; c = nexttiled(c->next))
1178 resize(c, m->wx, m->wy, m->ww - 2 * c->bw, m->wh - 2 * c->bw, False);
1182 movemouse(const Arg *arg) {
1183 int x, y, ocx, ocy, nx, ny;
1188 if(!(c = selmon->sel))
1193 if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
1194 None, cursor[CurMove], CurrentTime) != GrabSuccess)
1196 if(!getrootptr(&x, &y))
1199 XMaskEvent(dpy, MOUSEMASK|ExposureMask|SubstructureRedirectMask, &ev);
1201 case ConfigureRequest:
1204 handler[ev.type](&ev);
1207 nx = ocx + (ev.xmotion.x - x);
1208 ny = ocy + (ev.xmotion.y - y);
1209 if(snap && nx >= selmon->wx && nx <= selmon->wx + selmon->ww
1210 && ny >= selmon->wy && ny <= selmon->wy + selmon->wh) {
1211 if(abs(selmon->wx - nx) < snap)
1213 else if(abs((selmon->wx + selmon->ww) - (nx + WIDTH(c))) < snap)
1214 nx = selmon->wx + selmon->ww - WIDTH(c);
1215 if(abs(selmon->wy - ny) < snap)
1217 else if(abs((selmon->wy + selmon->wh) - (ny + HEIGHT(c))) < snap)
1218 ny = selmon->wy + selmon->wh - HEIGHT(c);
1219 if(!c->isfloating && selmon->lt[selmon->sellt]->arrange
1220 && (abs(nx - c->x) > snap || abs(ny - c->y) > snap))
1221 togglefloating(NULL);
1223 if(!selmon->lt[selmon->sellt]->arrange || c->isfloating)
1224 resize(c, nx, ny, c->w, c->h, True);
1227 } while(ev.type != ButtonRelease);
1228 XUngrabPointer(dpy, CurrentTime);
1229 if((m = ptrtomon(c->x + c->w / 2, c->y + c->h / 2)) != selmon) {
1237 nexttiled(Client *c) {
1238 for(; c && (c->isfloating || !ISVISIBLE(c)); c = c->next);
1243 ptrtomon(int x, int y) {
1246 for(m = mons; m; m = m->next)
1247 if(INRECT(x, y, m->wx, m->wy, m->ww, m->wh))
1253 propertynotify(XEvent *e) {
1256 XPropertyEvent *ev = &e->xproperty;
1258 if((ev->window == root) && (ev->atom == XA_WM_NAME))
1260 else if(ev->state == PropertyDelete)
1261 return; /* ignore */
1262 else if((c = wintoclient(ev->window))) {
1265 case XA_WM_TRANSIENT_FOR:
1266 XGetTransientForHint(dpy, c->win, &trans);
1267 if(!c->isfloating && (c->isfloating = (wintoclient(trans) != NULL)))
1270 case XA_WM_NORMAL_HINTS:
1278 if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
1280 if(c == c->mon->sel)
1287 quit(const Arg *arg) {
1292 resize(Client *c, int x, int y, int w, int h, Bool interact) {
1295 if(applysizehints(c, &x, &y, &w, &h, interact)) {
1298 c->w = wc.width = w;
1299 c->h = wc.height = h;
1300 wc.border_width = c->bw;
1301 XConfigureWindow(dpy, c->win, CWX|CWY|CWWidth|CWHeight|CWBorderWidth, &wc);
1308 resizemouse(const Arg *arg) {
1315 if(!(c = selmon->sel))
1320 if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
1321 None, cursor[CurResize], CurrentTime) != GrabSuccess)
1323 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->bw - 1, c->h + c->bw - 1);
1325 XMaskEvent(dpy, MOUSEMASK|ExposureMask|SubstructureRedirectMask, &ev);
1327 case ConfigureRequest:
1330 handler[ev.type](&ev);
1333 nw = MAX(ev.xmotion.x - ocx - 2 * c->bw + 1, 1);
1334 nh = MAX(ev.xmotion.y - ocy - 2 * c->bw + 1, 1);
1335 if(snap && nw >= selmon->wx && nw <= selmon->wx + selmon->ww
1336 && nh >= selmon->wy && nh <= selmon->wy + selmon->wh)
1338 if(!c->isfloating && selmon->lt[selmon->sellt]->arrange
1339 && (abs(nw - c->w) > snap || abs(nh - c->h) > snap))
1340 togglefloating(NULL);
1342 if(!selmon->lt[selmon->sellt]->arrange || c->isfloating)
1343 resize(c, c->x, c->y, nw, nh, True);
1346 } while(ev.type != ButtonRelease);
1347 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->bw - 1, c->h + c->bw - 1);
1348 XUngrabPointer(dpy, CurrentTime);
1349 while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
1350 if((m = ptrtomon(c->x + c->w / 2, c->y + c->h / 2)) != selmon) {
1358 restack(Monitor *m) {
1366 if(m->sel->isfloating || !m->lt[m->sellt]->arrange)
1367 XRaiseWindow(dpy, m->sel->win);
1368 if(m->lt[m->sellt]->arrange) {
1369 wc.stack_mode = Below;
1370 wc.sibling = m->barwin;
1371 for(c = m->stack; c; c = c->snext)
1372 if(!c->isfloating && ISVISIBLE(c)) {
1373 XConfigureWindow(dpy, c->win, CWSibling|CWStackMode, &wc);
1374 wc.sibling = c->win;
1378 while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
1385 /* main event loop */
1387 while(running && !XNextEvent(dpy, &ev))
1388 if(handler[ev.type])
1389 handler[ev.type](&ev); /* call handler */
1394 unsigned int i, num;
1395 Window d1, d2, *wins = NULL;
1396 XWindowAttributes wa;
1398 if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
1399 for(i = 0; i < num; i++) {
1400 if(!XGetWindowAttributes(dpy, wins[i], &wa)
1401 || wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
1403 if(wa.map_state == IsViewable || getstate(wins[i]) == IconicState)
1404 manage(wins[i], &wa);
1406 for(i = 0; i < num; i++) { /* now the transients */
1407 if(!XGetWindowAttributes(dpy, wins[i], &wa))
1409 if(XGetTransientForHint(dpy, wins[i], &d1)
1410 && (wa.map_state == IsViewable || getstate(wins[i]) == IconicState))
1411 manage(wins[i], &wa);
1419 sendmon(Client *c, Monitor *m) {
1426 c->tags = m->tagset[m->seltags]; /* assign tags of target monitor */
1434 setclientstate(Client *c, long state) {
1435 long data[] = { state, None };
1437 XChangeProperty(dpy, c->win, wmatom[WMState], wmatom[WMState], 32,
1438 PropModeReplace, (unsigned char *)data, 2);
1442 setlayout(const Arg *arg) {
1443 if(!arg || !arg->v || arg->v != selmon->lt[selmon->sellt])
1446 selmon->lt[selmon->sellt] = (Layout *)arg->v;
1453 /* arg > 1.0 will set mfact absolutly */
1455 setmfact(const Arg *arg) {
1458 if(!arg || !selmon->lt[selmon->sellt]->arrange)
1460 f = arg->f < 1.0 ? arg->f + selmon->mfact : arg->f - 1.0;
1461 if(f < 0.1 || f > 0.9)
1469 XSetWindowAttributes wa;
1471 /* clean up any zombies immediately */
1475 screen = DefaultScreen(dpy);
1476 root = RootWindow(dpy, screen);
1478 sw = DisplayWidth(dpy, screen);
1479 sh = DisplayHeight(dpy, screen);
1480 bh = dc.h = dc.font.height + 2;
1483 wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
1484 wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
1485 wmatom[WMState] = XInternAtom(dpy, "WM_STATE", False);
1486 netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
1487 netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
1489 cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
1490 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
1491 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
1492 /* init appearance */
1493 dc.norm[ColBorder] = getcolor(normbordercolor);
1494 dc.norm[ColBG] = getcolor(normbgcolor);
1495 dc.norm[ColFG] = getcolor(normfgcolor);
1496 dc.sel[ColBorder] = getcolor(selbordercolor);
1497 dc.sel[ColBG] = getcolor(selbgcolor);
1498 dc.sel[ColFG] = getcolor(selfgcolor);
1499 dc.drawable = XCreatePixmap(dpy, root, DisplayWidth(dpy, screen), bh, DefaultDepth(dpy, screen));
1500 dc.gc = XCreateGC(dpy, root, 0, NULL);
1501 XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
1503 XSetFont(dpy, dc.gc, dc.font.xfont->fid);
1507 /* EWMH support per view */
1508 XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
1509 PropModeReplace, (unsigned char *) netatom, NetLast);
1510 /* select for events */
1511 wa.cursor = cursor[CurNormal];
1512 wa.event_mask = SubstructureRedirectMask|SubstructureNotifyMask|ButtonPressMask
1513 |EnterWindowMask|LeaveWindowMask|StructureNotifyMask
1514 |PropertyChangeMask;
1515 XChangeWindowAttributes(dpy, root, CWEventMask|CWCursor, &wa);
1516 XSelectInput(dpy, root, wa.event_mask);
1521 showhide(Client *c) {
1524 if(ISVISIBLE(c)) { /* show clients top down */
1525 XMoveWindow(dpy, c->win, c->x, c->y);
1526 if(!c->mon->lt[c->mon->sellt]->arrange || c->isfloating)
1527 resize(c, c->x, c->y, c->w, c->h, False);
1530 else { /* hide clients bottom up */
1532 XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
1538 sigchld(int unused) {
1539 if(signal(SIGCHLD, sigchld) == SIG_ERR)
1540 die("Can't install SIGCHLD handler");
1541 while(0 < waitpid(-1, NULL, WNOHANG));
1545 spawn(const Arg *arg) {
1548 close(ConnectionNumber(dpy));
1550 execvp(((char **)arg->v)[0], (char **)arg->v);
1551 fprintf(stderr, "dwm: execvp %s", ((char **)arg->v)[0]);
1558 tag(const Arg *arg) {
1559 if(selmon->sel && arg->ui & TAGMASK) {
1560 selmon->sel->tags = arg->ui & TAGMASK;
1566 tagmon(const Arg *arg) {
1567 if(!selmon->sel || !mons->next)
1569 sendmon(selmon->sel, dirtomon(arg->i));
1573 textnw(const char *text, unsigned int len) {
1577 XmbTextExtents(dc.font.set, text, len, NULL, &r);
1580 return XTextWidth(dc.font.xfont, text, len);
1589 for(n = 0, c = nexttiled(m->clients); c; c = nexttiled(c->next), n++);
1593 c = nexttiled(m->clients);
1594 mw = m->mfact * m->ww;
1595 resize(c, m->wx, m->wy, (n == 1 ? m->ww : mw) - 2 * c->bw, m->wh - 2 * c->bw, False);
1599 x = (m->wx + mw > c->x + c->w) ? c->x + c->w + 2 * c->bw : m->wx + mw;
1601 w = (m->wx + mw > c->x + c->w) ? m->wx + m->ww - x : m->ww - mw;
1605 for(i = 0, c = nexttiled(c->next); c; c = nexttiled(c->next), i++) {
1606 resize(c, x, y, w - 2 * c->bw, /* remainder */ ((i + 1 == n)
1607 ? m->wy + m->wh - y - 2 * c->bw : h - 2 * c->bw), False);
1609 y = c->y + HEIGHT(c);
1614 togglebar(const Arg *arg) {
1615 selmon->showbar = !selmon->showbar;
1616 updatebarpos(selmon);
1617 XMoveResizeWindow(dpy, selmon->barwin, selmon->wx, selmon->by, selmon->ww, bh);
1622 togglefloating(const Arg *arg) {
1625 selmon->sel->isfloating = !selmon->sel->isfloating || selmon->sel->isfixed;
1626 if(selmon->sel->isfloating)
1627 resize(selmon->sel, selmon->sel->x, selmon->sel->y,
1628 selmon->sel->w, selmon->sel->h, False);
1633 toggletag(const Arg *arg) {
1634 unsigned int newtags;
1638 newtags = selmon->sel->tags ^ (arg->ui & TAGMASK);
1640 selmon->sel->tags = newtags;
1646 toggleview(const Arg *arg) {
1647 unsigned int newtagset = selmon->tagset[selmon->seltags] ^ (arg->ui & TAGMASK);
1650 selmon->tagset[selmon->seltags] = newtagset;
1656 unfocus(Client *c) {
1659 grabbuttons(c, False);
1660 XSetWindowBorder(dpy, c->win, dc.norm[ColBorder]);
1661 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
1665 unmanage(Client *c, Bool destroyed) {
1668 /* The server grab construct avoids race conditions. */
1672 wc.border_width = c->oldbw;
1674 XSetErrorHandler(xerrordummy);
1675 XConfigureWindow(dpy, c->win, CWBorderWidth, &wc); /* restore border */
1676 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
1677 setclientstate(c, WithdrawnState);
1679 XSetErrorHandler(xerror);
1688 unmapnotify(XEvent *e) {
1690 XUnmapEvent *ev = &e->xunmap;
1692 if((c = wintoclient(ev->window)))
1699 XSetWindowAttributes wa;
1701 wa.override_redirect = True;
1702 wa.background_pixmap = ParentRelative;
1703 wa.event_mask = ButtonPressMask|ExposureMask;
1704 for(m = mons; m; m = m->next) {
1705 m->barwin = XCreateWindow(dpy, root, m->wx, m->by, m->ww, bh, 0, DefaultDepth(dpy, screen),
1706 CopyFromParent, DefaultVisual(dpy, screen),
1707 CWOverrideRedirect|CWBackPixmap|CWEventMask, &wa);
1708 XDefineCursor(dpy, m->barwin, cursor[CurNormal]);
1709 XMapRaised(dpy, m->barwin);
1714 updatebarpos(Monitor *m) {
1719 m->by = m->topbar ? m->wy : m->wy + m->wh;
1720 m->wy = m->topbar ? m->wy + bh : m->wy;
1731 if(XineramaIsActive(dpy)) {
1735 XineramaScreenInfo *info = XineramaQueryScreens(dpy, &nn);
1736 XineramaScreenInfo *unique = NULL;
1738 info = XineramaQueryScreens(dpy, &nn);
1739 for(n = 0, m = mons; m; m = m->next, n++);
1740 /* only consider unique geometries as separate screens */
1741 if(!(unique = (XineramaScreenInfo *)malloc(sizeof(XineramaScreenInfo) * nn)))
1742 die("fatal: could not malloc() %u bytes\n", sizeof(XineramaScreenInfo) * nn);
1743 for(i = 0, j = 0; i < nn; i++)
1744 if(isuniquegeom(unique, j, &info[i]))
1745 memcpy(&unique[j++], &info[i], sizeof(XineramaScreenInfo));
1749 for(i = 0; i < (nn - n); i++) { /* new monitors available */
1750 for(m = mons; m && m->next; m = m->next);
1752 m->next = createmon();
1756 for(i = 0, m = mons; i < nn && m; m = m->next, i++)
1758 || (unique[i].x_org != m->mx || unique[i].y_org != m->my
1759 || unique[i].width != m->mw || unique[i].height != m->mh))
1763 m->mx = m->wx = unique[i].x_org;
1764 m->my = m->wy = unique[i].y_org;
1765 m->mw = m->ww = unique[i].width;
1766 m->mh = m->wh = unique[i].height;
1770 else { /* less monitors available nn < n */
1771 for(i = nn; i < n; i++) {
1772 for(m = mons; m && m->next; m = m->next);
1776 m->clients = c->next;
1790 #endif /* XINERAMA */
1791 /* default monitor setup */
1795 if(mons->mw != sw || mons->mh != sh) {
1797 mons->mw = mons->ww = sw;
1798 mons->mh = mons->wh = sh;
1804 selmon = wintomon(root);
1810 updatenumlockmask(void) {
1812 XModifierKeymap *modmap;
1815 modmap = XGetModifierMapping(dpy);
1816 for(i = 0; i < 8; i++)
1817 for(j = 0; j < modmap->max_keypermod; j++)
1818 if(modmap->modifiermap[i * modmap->max_keypermod + j]
1819 == XKeysymToKeycode(dpy, XK_Num_Lock))
1820 numlockmask = (1 << i);
1821 XFreeModifiermap(modmap);
1825 updatesizehints(Client *c) {
1829 if(!XGetWMNormalHints(dpy, c->win, &size, &msize))
1830 /* size is uninitialized, ensure that size.flags aren't used */
1832 if(size.flags & PBaseSize) {
1833 c->basew = size.base_width;
1834 c->baseh = size.base_height;
1836 else if(size.flags & PMinSize) {
1837 c->basew = size.min_width;
1838 c->baseh = size.min_height;
1841 c->basew = c->baseh = 0;
1842 if(size.flags & PResizeInc) {
1843 c->incw = size.width_inc;
1844 c->inch = size.height_inc;
1847 c->incw = c->inch = 0;
1848 if(size.flags & PMaxSize) {
1849 c->maxw = size.max_width;
1850 c->maxh = size.max_height;
1853 c->maxw = c->maxh = 0;
1854 if(size.flags & PMinSize) {
1855 c->minw = size.min_width;
1856 c->minh = size.min_height;
1858 else if(size.flags & PBaseSize) {
1859 c->minw = size.base_width;
1860 c->minh = size.base_height;
1863 c->minw = c->minh = 0;
1864 if(size.flags & PAspect) {
1865 c->mina = (float)size.min_aspect.y / size.min_aspect.x;
1866 c->maxa = (float)size.max_aspect.x / size.max_aspect.y;
1869 c->maxa = c->mina = 0.0;
1870 c->isfixed = (c->maxw && c->minw && c->maxh && c->minh
1871 && c->maxw == c->minw && c->maxh == c->minh);
1875 updatetitle(Client *c) {
1876 if(!gettextprop(c->win, netatom[NetWMName], c->name, sizeof c->name))
1877 gettextprop(c->win, XA_WM_NAME, c->name, sizeof c->name);
1878 if(c->name[0] == '\0') /* hack to mark broken clients */
1879 strcpy(c->name, broken);
1883 updatestatus(void) {
1884 if(!gettextprop(root, XA_WM_NAME, stext, sizeof(stext)))
1885 strcpy(stext, "dwm-"VERSION);
1890 updatewmhints(Client *c) {
1893 if((wmh = XGetWMHints(dpy, c->win))) {
1894 if(c == selmon->sel && wmh->flags & XUrgencyHint) {
1895 wmh->flags &= ~XUrgencyHint;
1896 XSetWMHints(dpy, c->win, wmh);
1899 c->isurgent = (wmh->flags & XUrgencyHint) ? True : False;
1905 view(const Arg *arg) {
1906 if((arg->ui & TAGMASK) == selmon->tagset[selmon->seltags])
1908 selmon->seltags ^= 1; /* toggle sel tagset */
1909 if(arg->ui & TAGMASK)
1910 selmon->tagset[selmon->seltags] = arg->ui & TAGMASK;
1915 wintoclient(Window w) {
1919 for(m = mons; m; m = m->next)
1920 for(c = m->clients; c; c = c->next)
1927 wintomon(Window w) {
1932 if(w == root && getrootptr(&x, &y))
1933 return ptrtomon(x, y);
1934 for(m = mons; m; m = m->next)
1937 if((c = wintoclient(w)))
1942 /* There's no way to check accesses to destroyed windows, thus those cases are
1943 * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
1944 * default error handler, which may call exit. */
1946 xerror(Display *dpy, XErrorEvent *ee) {
1947 if(ee->error_code == BadWindow
1948 || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
1949 || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
1950 || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
1951 || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
1952 || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
1953 || (ee->request_code == X_GrabButton && ee->error_code == BadAccess)
1954 || (ee->request_code == X_GrabKey && ee->error_code == BadAccess)
1955 || (ee->request_code == X_CopyArea && ee->error_code == BadDrawable))
1957 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
1958 ee->request_code, ee->error_code);
1959 return xerrorxlib(dpy, ee); /* may call exit */
1963 xerrordummy(Display *dpy, XErrorEvent *ee) {
1967 /* Startup Error handler to check if another window manager
1968 * is already running. */
1970 xerrorstart(Display *dpy, XErrorEvent *ee) {
1976 zoom(const Arg *arg) {
1977 Client *c = selmon->sel;
1979 if(!selmon->lt[selmon->sellt]->arrange
1980 || selmon->lt[selmon->sellt]->arrange == monocle
1981 || (selmon->sel && selmon->sel->isfloating))
1983 if(c == nexttiled(selmon->clients))
1984 if(!c || !(c = nexttiled(c->next)))
1993 main(int argc, char *argv[]) {
1994 if(argc == 2 && !strcmp("-v", argv[1]))
1995 die("dwm-"VERSION", © 2006-2009 dwm engineers, see LICENSE for details\n");
1997 die("usage: dwm [-v]\n");
1998 if(!setlocale(LC_CTYPE, "") || !XSupportsLocale())
1999 fputs("warning: no locale support\n", stderr);
2000 if(!(dpy = XOpenDisplay(NULL)))
2001 die("dwm: cannot open display\n");