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, NetWMState,
61 NetWMFullscreen, NetActiveWindow, NetLast }; /* EWMH atoms */
62 enum { WMProtocols, WMDelete, WMState, WMTakeFocus, WMLast }; /* default atoms */
63 enum { ClkTagBar, ClkLtSymbol, ClkStatusText, ClkWinTitle,
64 ClkClientWin, ClkRootWin, ClkLast }; /* clicks */
77 void (*func)(const Arg *arg);
81 typedef struct Monitor Monitor;
82 typedef struct Client Client;
87 int oldx, oldy, oldw, oldh;
88 int basew, baseh, incw, inch, maxw, maxh, minw, minh;
91 Bool isfixed, isfloating, isurgent, neverfocus, oldstate;
100 unsigned long norm[ColLast];
101 unsigned long sel[ColLast];
111 } DC; /* draw context */
116 void (*func)(const Arg *);
122 void (*arrange)(Monitor *);
129 int by; /* bar geometry */
130 int mx, my, mw, mh; /* screen size */
131 int wx, wy, ww, wh; /* window area */
132 unsigned int seltags;
134 unsigned int tagset[2];
147 const char *instance;
154 /* function declarations */
155 static void applyrules(Client *c);
156 static Bool applysizehints(Client *c, int *x, int *y, int *w, int *h, Bool interact);
157 static void arrange(Monitor *m);
158 static void arrangemon(Monitor *m);
159 static void attach(Client *c);
160 static void attachstack(Client *c);
161 static void buttonpress(XEvent *e);
162 static void checkotherwm(void);
163 static void cleanup(void);
164 static void cleanupmon(Monitor *mon);
165 static void clearurgent(Client *c);
166 static void clientmessage(XEvent *e);
167 static void configure(Client *c);
168 static void configurenotify(XEvent *e);
169 static void configurerequest(XEvent *e);
170 static Monitor *createmon(void);
171 static void destroynotify(XEvent *e);
172 static void detach(Client *c);
173 static void detachstack(Client *c);
174 static void die(const char *errstr, ...);
175 static Monitor *dirtomon(int dir);
176 static void drawbar(Monitor *m);
177 static void drawbars(void);
178 static void drawsquare(Bool filled, Bool empty, Bool invert, unsigned long col[ColLast]);
179 static void drawtext(const char *text, unsigned long col[ColLast], Bool invert);
180 static void enternotify(XEvent *e);
181 static void expose(XEvent *e);
182 static void focus(Client *c);
183 static void focusin(XEvent *e);
184 static void focusmon(const Arg *arg);
185 static void focusstack(const Arg *arg);
186 static unsigned long getcolor(const char *colstr);
187 static Bool getrootptr(int *x, int *y);
188 static long getstate(Window w);
189 static Bool gettextprop(Window w, Atom atom, char *text, unsigned int size);
190 static void grabbuttons(Client *c, Bool focused);
191 static void grabkeys(void);
192 static void initfont(const char *fontstr);
193 static void keypress(XEvent *e);
194 static void killclient(const Arg *arg);
195 static void manage(Window w, XWindowAttributes *wa);
196 static void mappingnotify(XEvent *e);
197 static void maprequest(XEvent *e);
198 static void monocle(Monitor *m);
199 static void movemouse(const Arg *arg);
200 static Client *nexttiled(Client *c);
201 static void pop(Client *);
202 static void propertynotify(XEvent *e);
203 static Monitor *ptrtomon(int x, int y);
204 static void quit(const Arg *arg);
205 static void resize(Client *c, int x, int y, int w, int h, Bool interact);
206 static void resizeclient(Client *c, int x, int y, int w, int h);
207 static void resizemouse(const Arg *arg);
208 static void restack(Monitor *m);
209 static void run(void);
210 static void scan(void);
211 static Bool sendevent(Client *c, Atom proto);
212 static void sendmon(Client *c, Monitor *m);
213 static void setclientstate(Client *c, long state);
214 static void setfocus(Client *c);
215 static void setlayout(const Arg *arg);
216 static void setmfact(const Arg *arg);
217 static void setup(void);
218 static void showhide(Client *c);
219 static void sigchld(int unused);
220 static void spawn(const Arg *arg);
221 static void tag(const Arg *arg);
222 static void tagmon(const Arg *arg);
223 static int textnw(const char *text, unsigned int len);
224 static void tile(Monitor *);
225 static void togglebar(const Arg *arg);
226 static void togglefloating(const Arg *arg);
227 static void toggletag(const Arg *arg);
228 static void toggleview(const Arg *arg);
229 static void unfocus(Client *c, Bool setfocus);
230 static void unmanage(Client *c, Bool destroyed);
231 static void unmapnotify(XEvent *e);
232 static Bool updategeom(void);
233 static void updatebarpos(Monitor *m);
234 static void updatebars(void);
235 static void updatenumlockmask(void);
236 static void updatesizehints(Client *c);
237 static void updatestatus(void);
238 static void updatetitle(Client *c);
239 static void updatewmhints(Client *c);
240 static void view(const Arg *arg);
241 static Client *wintoclient(Window w);
242 static Monitor *wintomon(Window w);
243 static int xerror(Display *dpy, XErrorEvent *ee);
244 static int xerrordummy(Display *dpy, XErrorEvent *ee);
245 static int xerrorstart(Display *dpy, XErrorEvent *ee);
246 static void zoom(const Arg *arg);
249 static const char broken[] = "broken";
250 static char stext[256];
252 static int sw, sh; /* X display screen geometry width, height */
253 static int bh, blw = 0; /* bar geometry */
254 static int (*xerrorxlib)(Display *, XErrorEvent *);
255 static unsigned int numlockmask = 0;
256 static void (*handler[LASTEvent]) (XEvent *) = {
257 [ButtonPress] = buttonpress,
258 [ClientMessage] = clientmessage,
259 [ConfigureRequest] = configurerequest,
260 [ConfigureNotify] = configurenotify,
261 [DestroyNotify] = destroynotify,
262 [EnterNotify] = enternotify,
265 [KeyPress] = keypress,
266 [MappingNotify] = mappingnotify,
267 [MapRequest] = maprequest,
268 [PropertyNotify] = propertynotify,
269 [UnmapNotify] = unmapnotify
271 static Atom wmatom[WMLast], netatom[NetLast];
272 static Bool running = True;
273 static Cursor cursor[CurLast];
276 static Monitor *mons = NULL, *selmon = NULL;
279 /* configuration, allows nested code to access above variables */
282 /* compile-time check if all tags fit into an unsigned int bit array. */
283 struct NumTags { char limitexceeded[LENGTH(tags) > 31 ? -1 : 1]; };
285 /* function implementations */
287 applyrules(Client *c) {
288 const char *class, *instance;
292 XClassHint ch = { 0 };
295 c->isfloating = c->tags = 0;
296 if(XGetClassHint(dpy, c->win, &ch)) {
297 class = ch.res_class ? ch.res_class : broken;
298 instance = ch.res_name ? ch.res_name : broken;
299 for(i = 0; i < LENGTH(rules); i++) {
301 if((!r->title || strstr(c->name, r->title))
302 && (!r->class || strstr(class, r->class))
303 && (!r->instance || strstr(instance, r->instance)))
305 c->isfloating = r->isfloating;
307 for(m = mons; m && m->num != r->monitor; m = m->next);
317 c->tags = c->tags & TAGMASK ? c->tags & TAGMASK : c->mon->tagset[c->mon->seltags];
321 applysizehints(Client *c, int *x, int *y, int *w, int *h, Bool interact) {
325 /* set minimum possible */
333 if(*x + *w + 2 * c->bw < 0)
335 if(*y + *h + 2 * c->bw < 0)
339 if(*x > m->mx + m->mw)
340 *x = m->mx + m->mw - WIDTH(c);
341 if(*y > m->my + m->mh)
342 *y = m->my + m->mh - HEIGHT(c);
343 if(*x + *w + 2 * c->bw < m->mx)
345 if(*y + *h + 2 * c->bw < m->my)
352 if(resizehints || c->isfloating) {
353 /* see last two sentences in ICCCM 4.1.2.3 */
354 baseismin = c->basew == c->minw && c->baseh == c->minh;
355 if(!baseismin) { /* temporarily remove base dimensions */
359 /* adjust for aspect limits */
360 if(c->mina > 0 && c->maxa > 0) {
361 if(c->maxa < (float)*w / *h)
362 *w = *h * c->maxa + 0.5;
363 else if(c->mina < (float)*h / *w)
364 *h = *w * c->mina + 0.5;
366 if(baseismin) { /* increment calculation requires this */
370 /* adjust for increment value */
375 /* restore base dimensions */
376 *w = MAX(*w + c->basew, c->minw);
377 *h = MAX(*h + c->baseh, c->minh);
379 *w = MIN(*w, c->maxw);
381 *h = MIN(*h, c->maxh);
383 return *x != c->x || *y != c->y || *w != c->w || *h != c->h;
387 arrange(Monitor *m) {
390 else for(m = mons; m; m = m->next)
395 else for(m = mons; m; m = m->next)
400 arrangemon(Monitor *m) {
401 strncpy(m->ltsymbol, m->lt[m->sellt]->symbol, sizeof m->ltsymbol);
402 if(m->lt[m->sellt]->arrange)
403 m->lt[m->sellt]->arrange(m);
409 c->next = c->mon->clients;
414 attachstack(Client *c) {
415 c->snext = c->mon->stack;
420 buttonpress(XEvent *e) {
421 unsigned int i, x, click;
425 XButtonPressedEvent *ev = &e->xbutton;
428 /* focus monitor if necessary */
429 if((m = wintomon(ev->window)) && m != selmon) {
430 unfocus(selmon->sel, True);
434 if(ev->window == selmon->barwin) {
438 } while(ev->x >= x && ++i < LENGTH(tags));
439 if(i < LENGTH(tags)) {
443 else if(ev->x < x + blw)
445 else if(ev->x > selmon->wx + selmon->ww - TEXTW(stext))
446 click = ClkStatusText;
450 else if((c = wintoclient(ev->window))) {
452 click = ClkClientWin;
454 for(i = 0; i < LENGTH(buttons); i++)
455 if(click == buttons[i].click && buttons[i].func && buttons[i].button == ev->button
456 && CLEANMASK(buttons[i].mask) == CLEANMASK(ev->state))
457 buttons[i].func(click == ClkTagBar && buttons[i].arg.i == 0 ? &arg : &buttons[i].arg);
462 xerrorxlib = XSetErrorHandler(xerrorstart);
463 /* this causes an error if some other window manager is running */
464 XSelectInput(dpy, DefaultRootWindow(dpy), SubstructureRedirectMask);
466 XSetErrorHandler(xerror);
473 Layout foo = { "", NULL };
477 selmon->lt[selmon->sellt] = &foo;
478 for(m = mons; m; m = m->next)
480 unmanage(m->stack, False);
482 XFreeFontSet(dpy, dc.font.set);
484 XFreeFont(dpy, dc.font.xfont);
485 XUngrabKey(dpy, AnyKey, AnyModifier, root);
486 XFreePixmap(dpy, dc.drawable);
488 XFreeCursor(dpy, cursor[CurNormal]);
489 XFreeCursor(dpy, cursor[CurResize]);
490 XFreeCursor(dpy, cursor[CurMove]);
494 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
498 cleanupmon(Monitor *mon) {
504 for(m = mons; m && m->next != mon; m = m->next);
507 XUnmapWindow(dpy, mon->barwin);
508 XDestroyWindow(dpy, mon->barwin);
513 clearurgent(Client *c) {
517 if(!(wmh = XGetWMHints(dpy, c->win)))
519 wmh->flags &= ~XUrgencyHint;
520 XSetWMHints(dpy, c->win, wmh);
525 clientmessage(XEvent *e) {
526 XClientMessageEvent *cme = &e->xclient;
527 Client *c = wintoclient(cme->window);
531 if(cme->message_type == netatom[NetWMState] && cme->data.l[1] == netatom[NetWMFullscreen]) {
533 XChangeProperty(dpy, cme->window, netatom[NetWMState], XA_ATOM, 32,
534 PropModeReplace, (unsigned char*)&netatom[NetWMFullscreen], 1);
535 c->oldstate = c->isfloating;
538 c->isfloating = True;
539 resizeclient(c, c->mon->mx, c->mon->my, c->mon->mw, c->mon->mh);
540 XRaiseWindow(dpy, c->win);
543 XChangeProperty(dpy, cme->window, netatom[NetWMState], XA_ATOM, 32,
544 PropModeReplace, (unsigned char*)0, 0);
545 c->isfloating = c->oldstate;
551 resizeclient(c, c->x, c->y, c->w, c->h);
555 else if(cme->message_type == netatom[NetActiveWindow]) {
557 c->mon->seltags ^= 1;
558 c->mon->tagset[c->mon->seltags] = c->tags;
565 configure(Client *c) {
568 ce.type = ConfigureNotify;
576 ce.border_width = c->bw;
578 ce.override_redirect = False;
579 XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&ce);
583 configurenotify(XEvent *e) {
585 XConfigureEvent *ev = &e->xconfigure;
587 if(ev->window == root) {
592 XFreePixmap(dpy, dc.drawable);
593 dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
595 for(m = mons; m; m = m->next)
596 XMoveResizeWindow(dpy, m->barwin, m->wx, m->by, m->ww, bh);
603 configurerequest(XEvent *e) {
606 XConfigureRequestEvent *ev = &e->xconfigurerequest;
609 if((c = wintoclient(ev->window))) {
610 if(ev->value_mask & CWBorderWidth)
611 c->bw = ev->border_width;
612 else if(c->isfloating || !selmon->lt[selmon->sellt]->arrange) {
614 if(ev->value_mask & CWX)
615 c->x = m->mx + ev->x;
616 if(ev->value_mask & CWY)
617 c->y = m->my + ev->y;
618 if(ev->value_mask & CWWidth)
620 if(ev->value_mask & CWHeight)
622 if((c->x + c->w) > m->mx + m->mw && c->isfloating)
623 c->x = m->mx + (m->mw / 2 - c->w / 2); /* center in x direction */
624 if((c->y + c->h) > m->my + m->mh && c->isfloating)
625 c->y = m->my + (m->mh / 2 - c->h / 2); /* center in y direction */
626 if((ev->value_mask & (CWX|CWY)) && !(ev->value_mask & (CWWidth|CWHeight)))
629 XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
637 wc.width = ev->width;
638 wc.height = ev->height;
639 wc.border_width = ev->border_width;
640 wc.sibling = ev->above;
641 wc.stack_mode = ev->detail;
642 XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
651 if(!(m = (Monitor *)calloc(1, sizeof(Monitor))))
652 die("fatal: could not malloc() %u bytes\n", sizeof(Monitor));
653 m->tagset[0] = m->tagset[1] = 1;
655 m->showbar = showbar;
657 m->lt[0] = &layouts[0];
658 m->lt[1] = &layouts[1 % LENGTH(layouts)];
659 strncpy(m->ltsymbol, layouts[0].symbol, sizeof m->ltsymbol);
664 destroynotify(XEvent *e) {
666 XDestroyWindowEvent *ev = &e->xdestroywindow;
668 if((c = wintoclient(ev->window)))
676 for(tc = &c->mon->clients; *tc && *tc != c; tc = &(*tc)->next);
681 detachstack(Client *c) {
684 for(tc = &c->mon->stack; *tc && *tc != c; tc = &(*tc)->snext);
687 if(c == c->mon->sel) {
688 for(t = c->mon->stack; t && !ISVISIBLE(t); t = t->snext);
694 die(const char *errstr, ...) {
697 va_start(ap, errstr);
698 vfprintf(stderr, errstr, ap);
708 if(!(m = selmon->next))
713 for(m = mons; m->next; m = m->next);
715 for(m = mons; m->next != selmon; m = m->next);
721 drawbar(Monitor *m) {
723 unsigned int i, occ = 0, urg = 0;
727 for(c = m->clients; c; c = c->next) {
733 for(i = 0; i < LENGTH(tags); i++) {
734 dc.w = TEXTW(tags[i]);
735 col = m->tagset[m->seltags] & 1 << i ? dc.sel : dc.norm;
736 drawtext(tags[i], col, urg & 1 << i);
737 drawsquare(m == selmon && selmon->sel && selmon->sel->tags & 1 << i,
738 occ & 1 << i, urg & 1 << i, col);
741 dc.w = blw = TEXTW(m->ltsymbol);
742 drawtext(m->ltsymbol, dc.norm, False);
745 if(m == selmon) { /* status is only drawn on selected monitor */
752 drawtext(stext, dc.norm, False);
756 if((dc.w = dc.x - x) > bh) {
759 col = m == selmon ? dc.sel : dc.norm;
760 drawtext(m->sel->name, col, False);
761 drawsquare(m->sel->isfixed, m->sel->isfloating, False, col);
764 drawtext(NULL, dc.norm, False);
766 XCopyArea(dpy, dc.drawable, m->barwin, dc.gc, 0, 0, m->ww, bh, 0, 0);
774 for(m = mons; m; m = m->next)
779 drawsquare(Bool filled, Bool empty, Bool invert, unsigned long col[ColLast]) {
782 XRectangle r = { dc.x, dc.y, dc.w, dc.h };
784 gcv.foreground = col[invert ? ColBG : ColFG];
785 XChangeGC(dpy, dc.gc, GCForeground, &gcv);
786 x = (dc.font.ascent + dc.font.descent + 2) / 4;
790 r.width = r.height = x + 1;
791 XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
794 r.width = r.height = x;
795 XDrawRectangles(dpy, dc.drawable, dc.gc, &r, 1);
800 drawtext(const char *text, unsigned long col[ColLast], Bool invert) {
802 int i, x, y, h, len, olen;
803 XRectangle r = { dc.x, dc.y, dc.w, dc.h };
805 XSetForeground(dpy, dc.gc, col[invert ? ColFG : ColBG]);
806 XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
810 h = dc.font.ascent + dc.font.descent;
811 y = dc.y + (dc.h / 2) - (h / 2) + dc.font.ascent;
813 /* shorten text if necessary */
814 for(len = MIN(olen, sizeof buf); len && textnw(text, len) > dc.w - h; len--);
817 memcpy(buf, text, len);
819 for(i = len; i && i > len - 3; buf[--i] = '.');
820 XSetForeground(dpy, dc.gc, col[invert ? ColBG : ColFG]);
822 XmbDrawString(dpy, dc.drawable, dc.font.set, dc.gc, x, y, buf, len);
824 XDrawString(dpy, dc.drawable, dc.gc, x, y, buf, len);
828 enternotify(XEvent *e) {
830 XCrossingEvent *ev = &e->xcrossing;
832 if((ev->mode != NotifyNormal || ev->detail == NotifyInferior) && ev->window != root)
834 if((m = wintomon(ev->window)) && m != selmon) {
835 unfocus(selmon->sel, True);
838 focus((wintoclient(ev->window)));
844 XExposeEvent *ev = &e->xexpose;
846 if(ev->count == 0 && (m = wintomon(ev->window)))
852 if(!c || !ISVISIBLE(c))
853 for(c = selmon->stack; c && !ISVISIBLE(c); c = c->snext);
854 /* was if(selmon->sel) */
855 if(selmon->sel && selmon->sel != c)
856 unfocus(selmon->sel, False);
864 grabbuttons(c, True);
865 XSetWindowBorder(dpy, c->win, dc.sel[ColBorder]);
869 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
875 focusin(XEvent *e) { /* there are some broken focus acquiring clients */
876 XFocusChangeEvent *ev = &e->xfocus;
878 if(selmon->sel && ev->window != selmon->sel->win)
879 setfocus(selmon->sel);
883 focusmon(const Arg *arg) {
888 if((m = dirtomon(arg->i)) == selmon)
890 unfocus(selmon->sel, True);
896 focusstack(const Arg *arg) {
897 Client *c = NULL, *i;
902 for(c = selmon->sel->next; c && !ISVISIBLE(c); c = c->next);
904 for(c = selmon->clients; c && !ISVISIBLE(c); c = c->next);
907 for(i = selmon->clients; i != selmon->sel; i = i->next)
911 for(; i; i = i->next)
922 getcolor(const char *colstr) {
923 Colormap cmap = DefaultColormap(dpy, screen);
926 if(!XAllocNamedColor(dpy, cmap, colstr, &color, &color))
927 die("error, cannot allocate color '%s'\n", colstr);
932 getrootptr(int *x, int *y) {
937 return XQueryPointer(dpy, root, &dummy, &dummy, x, y, &di, &di, &dui);
944 unsigned char *p = NULL;
945 unsigned long n, extra;
948 if(XGetWindowProperty(dpy, w, wmatom[WMState], 0L, 2L, False, wmatom[WMState],
949 &real, &format, &n, &extra, (unsigned char **)&p) != Success)
958 gettextprop(Window w, Atom atom, char *text, unsigned int size) {
963 if(!text || size == 0)
966 XGetTextProperty(dpy, w, &name, atom);
969 if(name.encoding == XA_STRING)
970 strncpy(text, (char *)name.value, size - 1);
972 if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success && n > 0 && *list) {
973 strncpy(text, *list, size - 1);
974 XFreeStringList(list);
977 text[size - 1] = '\0';
983 grabbuttons(Client *c, Bool focused) {
987 unsigned int modifiers[] = { 0, LockMask, numlockmask, numlockmask|LockMask };
988 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
990 for(i = 0; i < LENGTH(buttons); i++)
991 if(buttons[i].click == ClkClientWin)
992 for(j = 0; j < LENGTH(modifiers); j++)
993 XGrabButton(dpy, buttons[i].button,
994 buttons[i].mask | modifiers[j],
995 c->win, False, BUTTONMASK,
996 GrabModeAsync, GrabModeSync, None, None);
999 XGrabButton(dpy, AnyButton, AnyModifier, c->win, False,
1000 BUTTONMASK, GrabModeAsync, GrabModeSync, None, None);
1006 updatenumlockmask();
1009 unsigned int modifiers[] = { 0, LockMask, numlockmask, numlockmask|LockMask };
1012 XUngrabKey(dpy, AnyKey, AnyModifier, root);
1013 for(i = 0; i < LENGTH(keys); i++) {
1014 if((code = XKeysymToKeycode(dpy, keys[i].keysym)))
1015 for(j = 0; j < LENGTH(modifiers); j++)
1016 XGrabKey(dpy, code, keys[i].mod | modifiers[j], root,
1017 True, GrabModeAsync, GrabModeAsync);
1023 initfont(const char *fontstr) {
1024 char *def, **missing;
1028 dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
1031 fprintf(stderr, "dwm: missing fontset: %s\n", missing[n]);
1032 XFreeStringList(missing);
1035 XFontStruct **xfonts;
1038 dc.font.ascent = dc.font.descent = 0;
1039 XExtentsOfFontSet(dc.font.set);
1040 n = XFontsOfFontSet(dc.font.set, &xfonts, &font_names);
1042 dc.font.ascent = MAX(dc.font.ascent, (*xfonts)->ascent);
1043 dc.font.descent = MAX(dc.font.descent,(*xfonts)->descent);
1048 if(!(dc.font.xfont = XLoadQueryFont(dpy, fontstr))
1049 && !(dc.font.xfont = XLoadQueryFont(dpy, "fixed")))
1050 die("error, cannot load font: '%s'\n", fontstr);
1051 dc.font.ascent = dc.font.xfont->ascent;
1052 dc.font.descent = dc.font.xfont->descent;
1054 dc.font.height = dc.font.ascent + dc.font.descent;
1059 isuniquegeom(XineramaScreenInfo *unique, size_t n, XineramaScreenInfo *info) {
1061 if(unique[n].x_org == info->x_org && unique[n].y_org == info->y_org
1062 && unique[n].width == info->width && unique[n].height == info->height)
1066 #endif /* XINERAMA */
1069 keypress(XEvent *e) {
1075 keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
1076 for(i = 0; i < LENGTH(keys); i++)
1077 if(keysym == keys[i].keysym
1078 && CLEANMASK(keys[i].mod) == CLEANMASK(ev->state)
1080 keys[i].func(&(keys[i].arg));
1084 killclient(const Arg *arg) {
1087 if(!sendevent(selmon->sel, wmatom[WMDelete])) {
1089 XSetErrorHandler(xerrordummy);
1090 XSetCloseDownMode(dpy, DestroyAll);
1091 XKillClient(dpy, selmon->sel->win);
1093 XSetErrorHandler(xerror);
1099 manage(Window w, XWindowAttributes *wa) {
1100 Client *c, *t = NULL;
1101 Window trans = None;
1104 if(!(c = calloc(1, sizeof(Client))))
1105 die("fatal: could not malloc() %u bytes\n", sizeof(Client));
1108 if(XGetTransientForHint(dpy, w, &trans) && (t = wintoclient(trans))) {
1117 c->x = c->oldx = wa->x + c->mon->wx;
1118 c->y = c->oldy = wa->y + c->mon->wy;
1119 c->w = c->oldw = wa->width;
1120 c->h = c->oldh = wa->height;
1121 c->oldbw = wa->border_width;
1122 if(c->w == c->mon->mw && c->h == c->mon->mh) {
1123 c->isfloating = True;
1129 if(c->x + WIDTH(c) > c->mon->mx + c->mon->mw)
1130 c->x = c->mon->mx + c->mon->mw - WIDTH(c);
1131 if(c->y + HEIGHT(c) > c->mon->my + c->mon->mh)
1132 c->y = c->mon->my + c->mon->mh - HEIGHT(c);
1133 c->x = MAX(c->x, c->mon->mx);
1134 /* only fix client y-offset, if the client center might cover the bar */
1135 c->y = MAX(c->y, ((c->mon->by == 0) && (c->x + (c->w / 2) >= c->mon->wx)
1136 && (c->x + (c->w / 2) < c->mon->wx + c->mon->ww)) ? bh : c->mon->my);
1139 wc.border_width = c->bw;
1140 XConfigureWindow(dpy, w, CWBorderWidth, &wc);
1141 XSetWindowBorder(dpy, w, dc.norm[ColBorder]);
1142 configure(c); /* propagates border_width, if size doesn't change */
1145 XSelectInput(dpy, w, EnterWindowMask|FocusChangeMask|PropertyChangeMask|StructureNotifyMask);
1146 grabbuttons(c, False);
1148 c->isfloating = c->oldstate = trans != None || c->isfixed;
1150 XRaiseWindow(dpy, c->win);
1153 XMoveResizeWindow(dpy, c->win, c->x + 2 * sw, c->y, c->w, c->h); /* some windows require this */
1154 XMapWindow(dpy, c->win);
1155 setclientstate(c, NormalState);
1160 mappingnotify(XEvent *e) {
1161 XMappingEvent *ev = &e->xmapping;
1163 XRefreshKeyboardMapping(ev);
1164 if(ev->request == MappingKeyboard)
1169 maprequest(XEvent *e) {
1170 static XWindowAttributes wa;
1171 XMapRequestEvent *ev = &e->xmaprequest;
1173 if(!XGetWindowAttributes(dpy, ev->window, &wa))
1175 if(wa.override_redirect)
1177 if(!wintoclient(ev->window))
1178 manage(ev->window, &wa);
1182 monocle(Monitor *m) {
1186 for(c = m->clients; c; c = c->next)
1189 if(n > 0) /* override layout symbol */
1190 snprintf(m->ltsymbol, sizeof m->ltsymbol, "[%d]", n);
1191 for(c = nexttiled(m->clients); c; c = nexttiled(c->next))
1192 resize(c, m->wx, m->wy, m->ww - 2 * c->bw, m->wh - 2 * c->bw, False);
1196 movemouse(const Arg *arg) {
1197 int x, y, ocx, ocy, nx, ny;
1202 if(!(c = selmon->sel))
1207 if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
1208 None, cursor[CurMove], CurrentTime) != GrabSuccess)
1210 if(!getrootptr(&x, &y))
1213 XMaskEvent(dpy, MOUSEMASK|ExposureMask|SubstructureRedirectMask, &ev);
1215 case ConfigureRequest:
1218 handler[ev.type](&ev);
1221 nx = ocx + (ev.xmotion.x - x);
1222 ny = ocy + (ev.xmotion.y - y);
1223 if(nx >= selmon->wx && nx <= selmon->wx + selmon->ww
1224 && ny >= selmon->wy && ny <= selmon->wy + selmon->wh) {
1225 if(abs(selmon->wx - nx) < snap)
1227 else if(abs((selmon->wx + selmon->ww) - (nx + WIDTH(c))) < snap)
1228 nx = selmon->wx + selmon->ww - WIDTH(c);
1229 if(abs(selmon->wy - ny) < snap)
1231 else if(abs((selmon->wy + selmon->wh) - (ny + HEIGHT(c))) < snap)
1232 ny = selmon->wy + selmon->wh - HEIGHT(c);
1233 if(!c->isfloating && selmon->lt[selmon->sellt]->arrange
1234 && (abs(nx - c->x) > snap || abs(ny - c->y) > snap))
1235 togglefloating(NULL);
1237 if(!selmon->lt[selmon->sellt]->arrange || c->isfloating)
1238 resize(c, nx, ny, c->w, c->h, True);
1241 } while(ev.type != ButtonRelease);
1242 XUngrabPointer(dpy, CurrentTime);
1243 if((m = ptrtomon(c->x + c->w / 2, c->y + c->h / 2)) != selmon) {
1251 nexttiled(Client *c) {
1252 for(; c && (c->isfloating || !ISVISIBLE(c)); c = c->next);
1265 propertynotify(XEvent *e) {
1268 XPropertyEvent *ev = &e->xproperty;
1270 if((ev->window == root) && (ev->atom == XA_WM_NAME))
1272 else if(ev->state == PropertyDelete)
1273 return; /* ignore */
1274 else if((c = wintoclient(ev->window))) {
1277 case XA_WM_TRANSIENT_FOR:
1278 if(!c->isfloating && (XGetTransientForHint(dpy, c->win, &trans)) &&
1279 (c->isfloating = (wintoclient(trans)) != NULL))
1282 case XA_WM_NORMAL_HINTS:
1290 if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
1292 if(c == c->mon->sel)
1299 ptrtomon(int x, int y) {
1302 for(m = mons; m; m = m->next)
1303 if(INRECT(x, y, m->wx, m->wy, m->ww, m->wh))
1308 quit(const Arg *arg) {
1313 resize(Client *c, int x, int y, int w, int h, Bool interact) {
1314 if(applysizehints(c, &x, &y, &w, &h, interact))
1315 resizeclient(c, x, y, w, h);
1319 resizeclient(Client *c, int x, int y, int w, int h) {
1322 c->oldx = c->x; c->x = wc.x = x;
1323 c->oldy = c->y; c->y = wc.y = y;
1324 c->oldw = c->w; c->w = wc.width = w;
1325 c->oldh = c->h; c->h = wc.height = h;
1326 wc.border_width = c->bw;
1327 XConfigureWindow(dpy, c->win, CWX|CWY|CWWidth|CWHeight|CWBorderWidth, &wc);
1333 resizemouse(const Arg *arg) {
1340 if(!(c = selmon->sel))
1345 if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
1346 None, cursor[CurResize], CurrentTime) != GrabSuccess)
1348 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->bw - 1, c->h + c->bw - 1);
1350 XMaskEvent(dpy, MOUSEMASK|ExposureMask|SubstructureRedirectMask, &ev);
1352 case ConfigureRequest:
1355 handler[ev.type](&ev);
1358 nw = MAX(ev.xmotion.x - ocx - 2 * c->bw + 1, 1);
1359 nh = MAX(ev.xmotion.y - ocy - 2 * c->bw + 1, 1);
1360 if(c->mon->wx + nw >= selmon->wx && c->mon->wx + nw <= selmon->wx + selmon->ww
1361 && c->mon->wy + nh >= selmon->wy && c->mon->wy + nh <= selmon->wy + selmon->wh)
1363 if(!c->isfloating && selmon->lt[selmon->sellt]->arrange
1364 && (abs(nw - c->w) > snap || abs(nh - c->h) > snap))
1365 togglefloating(NULL);
1367 if(!selmon->lt[selmon->sellt]->arrange || c->isfloating)
1368 resize(c, c->x, c->y, nw, nh, True);
1371 } while(ev.type != ButtonRelease);
1372 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->bw - 1, c->h + c->bw - 1);
1373 XUngrabPointer(dpy, CurrentTime);
1374 while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
1375 if((m = ptrtomon(c->x + c->w / 2, c->y + c->h / 2)) != selmon) {
1383 restack(Monitor *m) {
1391 if(m->sel->isfloating || !m->lt[m->sellt]->arrange)
1392 XRaiseWindow(dpy, m->sel->win);
1393 if(m->lt[m->sellt]->arrange) {
1394 wc.stack_mode = Below;
1395 wc.sibling = m->barwin;
1396 for(c = m->stack; c; c = c->snext)
1397 if(!c->isfloating && ISVISIBLE(c)) {
1398 XConfigureWindow(dpy, c->win, CWSibling|CWStackMode, &wc);
1399 wc.sibling = c->win;
1403 while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
1409 /* main event loop */
1411 while(running && !XNextEvent(dpy, &ev)) {
1412 if(handler[ev.type])
1413 handler[ev.type](&ev); /* call handler */
1419 unsigned int i, num;
1420 Window d1, d2, *wins = NULL;
1421 XWindowAttributes wa;
1423 if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
1424 for(i = 0; i < num; i++) {
1425 if(!XGetWindowAttributes(dpy, wins[i], &wa)
1426 || wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
1428 if(wa.map_state == IsViewable || getstate(wins[i]) == IconicState)
1429 manage(wins[i], &wa);
1431 for(i = 0; i < num; i++) { /* now the transients */
1432 if(!XGetWindowAttributes(dpy, wins[i], &wa))
1434 if(XGetTransientForHint(dpy, wins[i], &d1)
1435 && (wa.map_state == IsViewable || getstate(wins[i]) == IconicState))
1436 manage(wins[i], &wa);
1444 sendmon(Client *c, Monitor *m) {
1451 c->tags = m->tagset[m->seltags]; /* assign tags of target monitor */
1459 setclientstate(Client *c, long state) {
1460 long data[] = { state, None };
1462 XChangeProperty(dpy, c->win, wmatom[WMState], wmatom[WMState], 32,
1463 PropModeReplace, (unsigned char *)data, 2);
1467 sendevent(Client *c, Atom proto) {
1470 Bool exists = False;
1473 if(XGetWMProtocols(dpy, c->win, &protocols, &n)) {
1474 while(!exists && n--)
1475 exists = protocols[n] == proto;
1479 ev.type = ClientMessage;
1480 ev.xclient.window = c->win;
1481 ev.xclient.message_type = wmatom[WMProtocols];
1482 ev.xclient.format = 32;
1483 ev.xclient.data.l[0] = proto;
1484 ev.xclient.data.l[1] = CurrentTime;
1485 XSendEvent(dpy, c->win, False, NoEventMask, &ev);
1491 setfocus(Client *c) {
1493 XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
1494 sendevent(c, wmatom[WMTakeFocus]);
1498 setlayout(const Arg *arg) {
1499 if(!arg || !arg->v || arg->v != selmon->lt[selmon->sellt])
1502 selmon->lt[selmon->sellt] = (Layout *)arg->v;
1503 strncpy(selmon->ltsymbol, selmon->lt[selmon->sellt]->symbol, sizeof selmon->ltsymbol);
1510 /* arg > 1.0 will set mfact absolutly */
1512 setmfact(const Arg *arg) {
1515 if(!arg || !selmon->lt[selmon->sellt]->arrange)
1517 f = arg->f < 1.0 ? arg->f + selmon->mfact : arg->f - 1.0;
1518 if(f < 0.1 || f > 0.9)
1526 XSetWindowAttributes wa;
1528 /* clean up any zombies immediately */
1532 screen = DefaultScreen(dpy);
1533 root = RootWindow(dpy, screen);
1535 sw = DisplayWidth(dpy, screen);
1536 sh = DisplayHeight(dpy, screen);
1537 bh = dc.h = dc.font.height + 2;
1540 wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
1541 wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
1542 wmatom[WMState] = XInternAtom(dpy, "WM_STATE", False);
1543 netatom[NetActiveWindow] = XInternAtom(dpy, "_NET_ACTIVE_WINDOW", False);
1544 wmatom[WMTakeFocus] = XInternAtom(dpy, "WM_TAKE_FOCUS", False);
1545 netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
1546 netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
1547 netatom[NetWMState] = XInternAtom(dpy, "_NET_WM_STATE", False);
1548 netatom[NetWMFullscreen] = XInternAtom(dpy, "_NET_WM_STATE_FULLSCREEN", False);
1550 cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
1551 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
1552 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
1553 /* init appearance */
1554 dc.norm[ColBorder] = getcolor(normbordercolor);
1555 dc.norm[ColBG] = getcolor(normbgcolor);
1556 dc.norm[ColFG] = getcolor(normfgcolor);
1557 dc.sel[ColBorder] = getcolor(selbordercolor);
1558 dc.sel[ColBG] = getcolor(selbgcolor);
1559 dc.sel[ColFG] = getcolor(selfgcolor);
1560 dc.drawable = XCreatePixmap(dpy, root, DisplayWidth(dpy, screen), bh, DefaultDepth(dpy, screen));
1561 dc.gc = XCreateGC(dpy, root, 0, NULL);
1562 XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
1564 XSetFont(dpy, dc.gc, dc.font.xfont->fid);
1568 /* EWMH support per view */
1569 XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
1570 PropModeReplace, (unsigned char *) netatom, NetLast);
1571 /* select for events */
1572 wa.cursor = cursor[CurNormal];
1573 wa.event_mask = SubstructureRedirectMask|SubstructureNotifyMask|ButtonPressMask
1574 |EnterWindowMask|LeaveWindowMask|StructureNotifyMask
1575 |PropertyChangeMask;
1576 XChangeWindowAttributes(dpy, root, CWEventMask|CWCursor, &wa);
1577 XSelectInput(dpy, root, wa.event_mask);
1582 showhide(Client *c) {
1585 if(ISVISIBLE(c)) { /* show clients top down */
1586 XMoveWindow(dpy, c->win, c->x, c->y);
1587 if(!c->mon->lt[c->mon->sellt]->arrange || c->isfloating)
1588 resize(c, c->x, c->y, c->w, c->h, False);
1591 else { /* hide clients bottom up */
1593 XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
1598 sigchld(int unused) {
1599 if(signal(SIGCHLD, sigchld) == SIG_ERR)
1600 die("Can't install SIGCHLD handler");
1601 while(0 < waitpid(-1, NULL, WNOHANG));
1605 spawn(const Arg *arg) {
1608 close(ConnectionNumber(dpy));
1610 execvp(((char **)arg->v)[0], (char **)arg->v);
1611 fprintf(stderr, "dwm: execvp %s", ((char **)arg->v)[0]);
1618 tag(const Arg *arg) {
1619 if(selmon->sel && arg->ui & TAGMASK) {
1620 selmon->sel->tags = arg->ui & TAGMASK;
1626 tagmon(const Arg *arg) {
1627 if(!selmon->sel || !mons->next)
1629 sendmon(selmon->sel, dirtomon(arg->i));
1633 textnw(const char *text, unsigned int len) {
1637 XmbTextExtents(dc.font.set, text, len, NULL, &r);
1640 return XTextWidth(dc.font.xfont, text, len);
1649 for(n = 0, c = nexttiled(m->clients); c; c = nexttiled(c->next), n++);
1653 c = nexttiled(m->clients);
1654 mw = m->mfact * m->ww;
1655 resize(c, m->wx, m->wy, (n == 1 ? m->ww : mw) - 2 * c->bw, m->wh - 2 * c->bw, False);
1659 x = (m->wx + mw > c->x + c->w) ? c->x + c->w + 2 * c->bw : m->wx + mw;
1661 w = (m->wx + mw > c->x + c->w) ? m->wx + m->ww - x : m->ww - mw;
1665 for(i = 0, c = nexttiled(c->next); c; c = nexttiled(c->next), i++) {
1666 resize(c, x, y, w - 2 * c->bw, /* remainder */ ((i + 1 == n)
1667 ? m->wy + m->wh - y - 2 * c->bw : h - 2 * c->bw), False);
1669 y = c->y + HEIGHT(c);
1674 togglebar(const Arg *arg) {
1675 selmon->showbar = !selmon->showbar;
1676 updatebarpos(selmon);
1677 XMoveResizeWindow(dpy, selmon->barwin, selmon->wx, selmon->by, selmon->ww, bh);
1682 togglefloating(const Arg *arg) {
1685 selmon->sel->isfloating = !selmon->sel->isfloating || selmon->sel->isfixed;
1686 if(selmon->sel->isfloating)
1687 resize(selmon->sel, selmon->sel->x, selmon->sel->y,
1688 selmon->sel->w, selmon->sel->h, False);
1693 toggletag(const Arg *arg) {
1694 unsigned int newtags;
1698 newtags = selmon->sel->tags ^ (arg->ui & TAGMASK);
1700 selmon->sel->tags = newtags;
1706 toggleview(const Arg *arg) {
1707 unsigned int newtagset = selmon->tagset[selmon->seltags] ^ (arg->ui & TAGMASK);
1710 selmon->tagset[selmon->seltags] = newtagset;
1716 unfocus(Client *c, Bool setfocus) {
1719 grabbuttons(c, False);
1720 XSetWindowBorder(dpy, c->win, dc.norm[ColBorder]);
1722 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
1726 unmanage(Client *c, Bool destroyed) {
1727 Monitor *m = c->mon;
1730 /* The server grab construct avoids race conditions. */
1734 wc.border_width = c->oldbw;
1736 XSetErrorHandler(xerrordummy);
1737 XConfigureWindow(dpy, c->win, CWBorderWidth, &wc); /* restore border */
1738 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
1739 setclientstate(c, WithdrawnState);
1741 XSetErrorHandler(xerror);
1750 unmapnotify(XEvent *e) {
1752 XUnmapEvent *ev = &e->xunmap;
1754 if((c = wintoclient(ev->window)))
1761 XSetWindowAttributes wa;
1763 wa.override_redirect = True;
1764 wa.background_pixmap = ParentRelative;
1765 wa.event_mask = ButtonPressMask|ExposureMask;
1766 for(m = mons; m; m = m->next) {
1767 m->barwin = XCreateWindow(dpy, root, m->wx, m->by, m->ww, bh, 0, DefaultDepth(dpy, screen),
1768 CopyFromParent, DefaultVisual(dpy, screen),
1769 CWOverrideRedirect|CWBackPixmap|CWEventMask, &wa);
1770 XDefineCursor(dpy, m->barwin, cursor[CurNormal]);
1771 XMapRaised(dpy, m->barwin);
1776 updatebarpos(Monitor *m) {
1781 m->by = m->topbar ? m->wy : m->wy + m->wh;
1782 m->wy = m->topbar ? m->wy + bh : m->wy;
1793 if(XineramaIsActive(dpy)) {
1797 XineramaScreenInfo *info = XineramaQueryScreens(dpy, &nn);
1798 XineramaScreenInfo *unique = NULL;
1800 for(n = 0, m = mons; m; m = m->next, n++);
1801 /* only consider unique geometries as separate screens */
1802 if(!(unique = (XineramaScreenInfo *)malloc(sizeof(XineramaScreenInfo) * nn)))
1803 die("fatal: could not malloc() %u bytes\n", sizeof(XineramaScreenInfo) * nn);
1804 for(i = 0, j = 0; i < nn; i++)
1805 if(isuniquegeom(unique, j, &info[i]))
1806 memcpy(&unique[j++], &info[i], sizeof(XineramaScreenInfo));
1810 for(i = 0; i < (nn - n); i++) { /* new monitors available */
1811 for(m = mons; m && m->next; m = m->next);
1813 m->next = createmon();
1817 for(i = 0, m = mons; i < nn && m; m = m->next, i++)
1819 || (unique[i].x_org != m->mx || unique[i].y_org != m->my
1820 || unique[i].width != m->mw || unique[i].height != m->mh))
1824 m->mx = m->wx = unique[i].x_org;
1825 m->my = m->wy = unique[i].y_org;
1826 m->mw = m->ww = unique[i].width;
1827 m->mh = m->wh = unique[i].height;
1831 else { /* less monitors available nn < n */
1832 for(i = nn; i < n; i++) {
1833 for(m = mons; m && m->next; m = m->next);
1837 m->clients = c->next;
1851 #endif /* XINERAMA */
1852 /* default monitor setup */
1856 if(mons->mw != sw || mons->mh != sh) {
1858 mons->mw = mons->ww = sw;
1859 mons->mh = mons->wh = sh;
1865 selmon = wintomon(root);
1871 updatenumlockmask(void) {
1873 XModifierKeymap *modmap;
1876 modmap = XGetModifierMapping(dpy);
1877 for(i = 0; i < 8; i++)
1878 for(j = 0; j < modmap->max_keypermod; j++)
1879 if(modmap->modifiermap[i * modmap->max_keypermod + j]
1880 == XKeysymToKeycode(dpy, XK_Num_Lock))
1881 numlockmask = (1 << i);
1882 XFreeModifiermap(modmap);
1886 updatesizehints(Client *c) {
1890 if(!XGetWMNormalHints(dpy, c->win, &size, &msize))
1891 /* size is uninitialized, ensure that size.flags aren't used */
1893 if(size.flags & PBaseSize) {
1894 c->basew = size.base_width;
1895 c->baseh = size.base_height;
1897 else if(size.flags & PMinSize) {
1898 c->basew = size.min_width;
1899 c->baseh = size.min_height;
1902 c->basew = c->baseh = 0;
1903 if(size.flags & PResizeInc) {
1904 c->incw = size.width_inc;
1905 c->inch = size.height_inc;
1908 c->incw = c->inch = 0;
1909 if(size.flags & PMaxSize) {
1910 c->maxw = size.max_width;
1911 c->maxh = size.max_height;
1914 c->maxw = c->maxh = 0;
1915 if(size.flags & PMinSize) {
1916 c->minw = size.min_width;
1917 c->minh = size.min_height;
1919 else if(size.flags & PBaseSize) {
1920 c->minw = size.base_width;
1921 c->minh = size.base_height;
1924 c->minw = c->minh = 0;
1925 if(size.flags & PAspect) {
1926 c->mina = (float)size.min_aspect.y / size.min_aspect.x;
1927 c->maxa = (float)size.max_aspect.x / size.max_aspect.y;
1930 c->maxa = c->mina = 0.0;
1931 c->isfixed = (c->maxw && c->minw && c->maxh && c->minh
1932 && c->maxw == c->minw && c->maxh == c->minh);
1936 updatetitle(Client *c) {
1937 if(!gettextprop(c->win, netatom[NetWMName], c->name, sizeof c->name))
1938 gettextprop(c->win, XA_WM_NAME, c->name, sizeof c->name);
1939 if(c->name[0] == '\0') /* hack to mark broken clients */
1940 strcpy(c->name, broken);
1944 updatestatus(void) {
1945 if(!gettextprop(root, XA_WM_NAME, stext, sizeof(stext)))
1946 strcpy(stext, "dwm-"VERSION);
1951 updatewmhints(Client *c) {
1954 if((wmh = XGetWMHints(dpy, c->win))) {
1955 if(c == selmon->sel && wmh->flags & XUrgencyHint) {
1956 wmh->flags &= ~XUrgencyHint;
1957 XSetWMHints(dpy, c->win, wmh);
1960 c->isurgent = (wmh->flags & XUrgencyHint) ? True : False;
1961 if(wmh->flags & InputHint)
1962 c->neverfocus = !wmh->input;
1964 c->neverfocus = False;
1970 view(const Arg *arg) {
1971 if((arg->ui & TAGMASK) == selmon->tagset[selmon->seltags])
1973 selmon->seltags ^= 1; /* toggle sel tagset */
1974 if(arg->ui & TAGMASK)
1975 selmon->tagset[selmon->seltags] = arg->ui & TAGMASK;
1980 wintoclient(Window w) {
1984 for(m = mons; m; m = m->next)
1985 for(c = m->clients; c; c = c->next)
1992 wintomon(Window w) {
1997 if(w == root && getrootptr(&x, &y))
1998 return ptrtomon(x, y);
1999 for(m = mons; m; m = m->next)
2002 if((c = wintoclient(w)))
2007 /* There's no way to check accesses to destroyed windows, thus those cases are
2008 * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
2009 * default error handler, which may call exit. */
2011 xerror(Display *dpy, XErrorEvent *ee) {
2012 if(ee->error_code == BadWindow
2013 || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
2014 || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
2015 || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
2016 || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
2017 || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
2018 || (ee->request_code == X_GrabButton && ee->error_code == BadAccess)
2019 || (ee->request_code == X_GrabKey && ee->error_code == BadAccess)
2020 || (ee->request_code == X_CopyArea && ee->error_code == BadDrawable))
2022 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
2023 ee->request_code, ee->error_code);
2024 return xerrorxlib(dpy, ee); /* may call exit */
2028 xerrordummy(Display *dpy, XErrorEvent *ee) {
2032 /* Startup Error handler to check if another window manager
2033 * is already running. */
2035 xerrorstart(Display *dpy, XErrorEvent *ee) {
2036 die("dwm: another window manager is already running\n");
2041 zoom(const Arg *arg) {
2042 Client *c = selmon->sel;
2044 if(!selmon->lt[selmon->sellt]->arrange
2045 || selmon->lt[selmon->sellt]->arrange == monocle
2046 || (selmon->sel && selmon->sel->isfloating))
2048 if(c == nexttiled(selmon->clients))
2049 if(!c || !(c = nexttiled(c->next)))
2055 main(int argc, char *argv[]) {
2056 if(argc == 2 && !strcmp("-v", argv[1]))
2057 die("dwm-"VERSION", © 2006-2010 dwm engineers, see LICENSE for details\n");
2059 die("usage: dwm [-v]\n");
2060 if(!setlocale(LC_CTYPE, "") || !XSupportsLocale())
2061 fputs("warning: no locale support\n", stderr);
2062 if(!(dpy = XOpenDisplay(NULL)))
2063 die("dwm: cannot open display\n");