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 * Calls to fetch an X event from the event queue are blocking. Due reading
10 * status text from standard input, a select()-driven main loop has been
11 * implemented which selects for reads on the X connection and STDIN_FILENO to
12 * handle all data smoothly. The event handlers of dwm are organized in an
13 * array which is accessed whenever a new event has been fetched. This allows
14 * event dispatching in O(1) time.
16 * Each child of the root window is called a client, except windows which have
17 * set the override_redirect flag. Clients are organized in a global
18 * doubly-linked client list, the focus history is remembered through a global
19 * stack list. Each client contains a bit array to indicate the tags of a
22 * Keys and tagging rules are organized as arrays and defined in config.h.
24 * To understand everything else, start reading main().
32 #include <sys/select.h>
33 #include <sys/types.h>
35 #include <X11/cursorfont.h>
36 #include <X11/keysym.h>
37 #include <X11/Xatom.h>
39 #include <X11/Xproto.h>
40 #include <X11/Xutil.h>
42 #include <X11/extensions/Xinerama.h>
46 #define BUTTONMASK (ButtonPressMask|ButtonReleaseMask)
47 #define CLEANMASK(mask) (mask & ~(numlockmask|LockMask))
48 #define INRECT(X,Y,RX,RY,RW,RH) ((X) >= (RX) && (X) < (RX) + (RW) && (Y) >= (RY) && (Y) < (RY) + (RH))
49 #define ISVISIBLE(x) (x->tags & tagset[seltags])
50 #define LENGTH(x) (sizeof x / sizeof x[0])
51 #define MAX(a, b) ((a) > (b) ? (a) : (b))
52 #define MIN(a, b) ((a) < (b) ? (a) : (b))
54 #define MOUSEMASK (BUTTONMASK|PointerMotionMask)
55 #define TAGMASK ((int)((1LL << LENGTH(tags)) - 1))
56 #define TEXTW(x) (textnw(x, strlen(x)) + dc.font.height)
59 enum { CurNormal, CurResize, CurMove, CurLast }; /* cursor */
60 enum { ColBorder, ColFG, ColBG, ColLast }; /* color */
61 enum { NetSupported, NetWMName, NetLast }; /* EWMH atoms */
62 enum { WMProtocols, WMDelete, WMName, WMState, WMLast };/* default atoms */
63 enum { ClkTagBar, ClkLtSymbol, ClkStatusText, ClkWinTitle,
64 ClkClientWin, ClkRootWin, ClkLast }; /* clicks */
77 void (*func)(const Arg *arg);
81 typedef struct Client Client;
86 int basew, baseh, incw, inch, maxw, maxh, minw, minh;
89 Bool isfixed, isfloating, isurgent;
97 unsigned long norm[ColLast];
98 unsigned long sel[ColLast];
108 } DC; /* draw context */
113 void (*func)(const Arg *);
119 void (*arrange)(void);
124 const char *instance;
130 /* function declarations */
131 static void applyrules(Client *c);
132 static void arrange(void);
133 static void attach(Client *c);
134 static void attachstack(Client *c);
135 static void buttonpress(XEvent *e);
136 static void checkotherwm(void);
137 static void cleanup(void);
138 static void clearurgent(void);
139 static void configure(Client *c);
140 static void configurenotify(XEvent *e);
141 static void configurerequest(XEvent *e);
142 static void destroynotify(XEvent *e);
143 static void detach(Client *c);
144 static void detachstack(Client *c);
145 static void die(const char *errstr, ...);
146 static void drawbar(void);
147 static void drawsquare(Bool filled, Bool empty, Bool invert, unsigned long col[ColLast]);
148 static void drawtext(const char *text, unsigned long col[ColLast], Bool invert);
149 static void enternotify(XEvent *e);
150 static void expose(XEvent *e);
151 static void focus(Client *c);
152 static void focusin(XEvent *e);
153 static void focusstack(const Arg *arg);
154 static Client *getclient(Window w);
155 static unsigned long getcolor(const char *colstr);
156 static long getstate(Window w);
157 static Bool gettextprop(Window w, Atom atom, char *text, unsigned int size);
158 static void grabbuttons(Client *c, Bool focused);
159 static void grabkeys(void);
160 static void initfont(const char *fontstr);
161 static Bool isprotodel(Client *c);
162 static void keypress(XEvent *e);
163 static void killclient(const Arg *arg);
164 static void manage(Window w, XWindowAttributes *wa);
165 static void mappingnotify(XEvent *e);
166 static void maprequest(XEvent *e);
167 static void monocle(void);
168 static void movemouse(const Arg *arg);
169 static Client *nexttiled(Client *c);
170 static void propertynotify(XEvent *e);
171 static void quit(const Arg *arg);
172 static void resize(Client *c, int x, int y, int w, int h, Bool sizehints);
173 static void resizemouse(const Arg *arg);
174 static void restack(void);
175 static void run(void);
176 static void scan(void);
177 static void setclientstate(Client *c, long state);
178 static void setlayout(const Arg *arg);
179 static void setmfact(const Arg *arg);
180 static void setup(void);
181 static void spawn(const Arg *arg);
182 static void tag(const Arg *arg);
183 static int textnw(const char *text, unsigned int len);
184 static void tile(void);
185 static void togglebar(const Arg *arg);
186 static void togglefloating(const Arg *arg);
187 static void toggletag(const Arg *arg);
188 static void toggleview(const Arg *arg);
189 static void unmanage(Client *c);
190 static void unmapnotify(XEvent *e);
191 static void updatebar(void);
192 static void updategeom(void);
193 static void updatesizehints(Client *c);
194 static void updatetitle(Client *c);
195 static void updatewmhints(Client *c);
196 static void view(const Arg *arg);
197 static int xerror(Display *dpy, XErrorEvent *ee);
198 static int xerrordummy(Display *dpy, XErrorEvent *ee);
199 static int xerrorstart(Display *dpy, XErrorEvent *ee);
200 static void zoom(const Arg *arg);
203 static char stext[256];
205 static int sx, sy, sw, sh; /* X display screen geometry x, y, width, height */
206 static int by, bh, blw; /* bar geometry y, height and layout symbol width */
207 static int wx, wy, ww, wh; /* window area geometry x, y, width, height, bar excluded */
208 static unsigned int seltags = 0, sellt = 0;
209 static int (*xerrorxlib)(Display *, XErrorEvent *);
210 static unsigned int numlockmask = 0;
211 static void (*handler[LASTEvent]) (XEvent *) = {
212 [ButtonPress] = buttonpress,
213 [ConfigureRequest] = configurerequest,
214 [ConfigureNotify] = configurenotify,
215 [DestroyNotify] = destroynotify,
216 [EnterNotify] = enternotify,
219 [KeyPress] = keypress,
220 [MappingNotify] = mappingnotify,
221 [MapRequest] = maprequest,
222 [PropertyNotify] = propertynotify,
223 [UnmapNotify] = unmapnotify
225 static Atom wmatom[WMLast], netatom[NetLast];
227 static Bool running = True;
228 static unsigned int tagset[] = {1, 1}; /* after start, first tag is selected */
229 static Client *clients = NULL;
230 static Client *sel = NULL;
231 static Client *stack = NULL;
232 static Cursor cursor[CurLast];
235 static Layout *lt[] = { NULL, NULL };
236 static Window root, barwin;
237 /* configuration, allows nested code to access above variables */
240 /* compile-time check if all tags fit into an unsigned int bit array. */
241 struct NumTags { char limitexceeded[sizeof(unsigned int) * 8 < LENGTH(tags) ? -1 : 1]; };
243 /* function implementations */
245 applyrules(Client *c) {
248 XClassHint ch = { 0 };
251 XGetClassHint(dpy, c->win, &ch);
252 for(i = 0; i < LENGTH(rules); i++) {
254 if((!r->title || strstr(c->name, r->title))
255 && (!r->class || (ch.res_class && strstr(ch.res_class, r->class)))
256 && (!r->instance || (ch.res_name && strstr(ch.res_name, r->instance)))) {
257 c->isfloating = r->isfloating;
258 c->tags |= r->tags & TAGMASK;
266 c->tags = tagset[seltags];
273 for(c = clients; c; c = c->next)
275 XMoveWindow(dpy, c->win, c->x, c->y);
276 if(!lt[sellt]->arrange || c->isfloating)
277 resize(c, c->x, c->y, c->w, c->h, True);
280 XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
284 if(lt[sellt]->arrange)
285 lt[sellt]->arrange();
296 attachstack(Client *c) {
302 buttonpress(XEvent *e) {
303 unsigned int i, x, click;
306 XButtonPressedEvent *ev = &e->xbutton;
309 if(ev->window == barwin) {
311 do x += TEXTW(tags[i]); while(ev->x >= x && ++i < LENGTH(tags));
312 if(i < LENGTH(tags)) {
316 else if(ev->x < x + blw)
318 else if(ev->x > wx + ww - TEXTW(stext))
319 click = ClkStatusText;
323 else if((c = getclient(ev->window))) {
325 click = ClkClientWin;
328 for(i = 0; i < LENGTH(buttons); i++)
329 if(click == buttons[i].click && buttons[i].func && buttons[i].button == ev->button
330 && CLEANMASK(buttons[i].mask) == CLEANMASK(ev->state))
331 buttons[i].func(click == ClkTagBar ? &arg : &buttons[i].arg);
337 XSetErrorHandler(xerrorstart);
339 /* this causes an error if some other window manager is running */
340 XSelectInput(dpy, DefaultRootWindow(dpy), SubstructureRedirectMask);
343 die("dwm: another window manager is already running\n");
344 XSetErrorHandler(NULL);
345 xerrorxlib = XSetErrorHandler(xerror);
352 Layout foo = { "", NULL };
360 XFreeFontSet(dpy, dc.font.set);
362 XFreeFont(dpy, dc.font.xfont);
363 XUngrabKey(dpy, AnyKey, AnyModifier, root);
364 XFreePixmap(dpy, dc.drawable);
366 XFreeCursor(dpy, cursor[CurNormal]);
367 XFreeCursor(dpy, cursor[CurResize]);
368 XFreeCursor(dpy, cursor[CurMove]);
369 XDestroyWindow(dpy, barwin);
371 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
379 for(c = clients; c; c = c->next)
380 if(ISVISIBLE(c) && c->isurgent) {
382 if (!(wmh = XGetWMHints(dpy, c->win)))
385 wmh->flags &= ~XUrgencyHint;
386 XSetWMHints(dpy, c->win, wmh);
392 configure(Client *c) {
395 ce.type = ConfigureNotify;
403 ce.border_width = c->bw;
405 ce.override_redirect = False;
406 XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&ce);
410 configurenotify(XEvent *e) {
411 XConfigureEvent *ev = &e->xconfigure;
413 if(ev->window == root && (ev->width != sw || ev->height != sh)) {
423 configurerequest(XEvent *e) {
425 XConfigureRequestEvent *ev = &e->xconfigurerequest;
428 if((c = getclient(ev->window))) {
429 if(ev->value_mask & CWBorderWidth)
430 c->bw = ev->border_width;
431 else if(c->isfloating || !lt[sellt]->arrange) {
432 if(ev->value_mask & CWX)
434 if(ev->value_mask & CWY)
436 if(ev->value_mask & CWWidth)
438 if(ev->value_mask & CWHeight)
440 if((c->x - sx + c->w) > sw && c->isfloating)
441 c->x = sx + (sw / 2 - c->w / 2); /* center in x direction */
442 if((c->y - sy + c->h) > sh && c->isfloating)
443 c->y = sy + (sh / 2 - c->h / 2); /* center in y direction */
444 if((ev->value_mask & (CWX|CWY)) && !(ev->value_mask & (CWWidth|CWHeight)))
447 XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
455 wc.width = ev->width;
456 wc.height = ev->height;
457 wc.border_width = ev->border_width;
458 wc.sibling = ev->above;
459 wc.stack_mode = ev->detail;
460 XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
466 destroynotify(XEvent *e) {
468 XDestroyWindowEvent *ev = &e->xdestroywindow;
470 if((c = getclient(ev->window)))
478 for(tc = &clients; *tc && *tc != c; tc = &(*tc)->next);
483 detachstack(Client *c) {
486 for(tc = &stack; *tc && *tc != c; tc = &(*tc)->snext);
491 die(const char *errstr, ...) {
494 va_start(ap, errstr);
495 vfprintf(stderr, errstr, ap);
503 unsigned int i, occ = 0, urg = 0;
507 for(c = clients; c; c = c->next) {
514 for(i = 0; i < LENGTH(tags); i++) {
515 dc.w = TEXTW(tags[i]);
516 col = tagset[seltags] & 1 << i ? dc.sel : dc.norm;
517 drawtext(tags[i], col, urg & 1 << i);
518 drawsquare(sel && sel->tags & 1 << i, occ & 1 << i, urg & 1 << i, col);
523 drawtext(lt[sellt]->symbol, dc.norm, False);
534 drawtext(stext, dc.norm, False);
535 if((dc.w = dc.x - x) > bh) {
538 drawtext(sel->name, dc.sel, False);
539 drawsquare(sel->isfixed, sel->isfloating, False, dc.sel);
542 drawtext(NULL, dc.norm, False);
544 XCopyArea(dpy, dc.drawable, barwin, dc.gc, 0, 0, ww, bh, 0, 0);
549 drawsquare(Bool filled, Bool empty, Bool invert, unsigned long col[ColLast]) {
552 XRectangle r = { dc.x, dc.y, dc.w, dc.h };
554 gcv.foreground = col[invert ? ColBG : ColFG];
555 XChangeGC(dpy, dc.gc, GCForeground, &gcv);
556 x = (dc.font.ascent + dc.font.descent + 2) / 4;
560 r.width = r.height = x + 1;
561 XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
564 r.width = r.height = x;
565 XDrawRectangles(dpy, dc.drawable, dc.gc, &r, 1);
570 drawtext(const char *text, unsigned long col[ColLast], Bool invert) {
572 int i, x, y, h, len, olen;
573 XRectangle r = { dc.x, dc.y, dc.w, dc.h };
575 XSetForeground(dpy, dc.gc, col[invert ? ColFG : ColBG]);
576 XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
580 h = dc.font.ascent + dc.font.descent;
581 y = dc.y + (dc.h / 2) - (h / 2) + dc.font.ascent;
583 /* shorten text if necessary */
584 for(len = MIN(olen, sizeof buf); len && textnw(text, len) > dc.w - h; len--);
587 memcpy(buf, text, len);
589 for(i = len; i && i > len - 3; buf[--i] = '.');
590 XSetForeground(dpy, dc.gc, col[invert ? ColBG : ColFG]);
592 XmbDrawString(dpy, dc.drawable, dc.font.set, dc.gc, x, y, buf, len);
594 XDrawString(dpy, dc.drawable, dc.gc, x, y, buf, len);
598 enternotify(XEvent *e) {
600 XCrossingEvent *ev = &e->xcrossing;
602 if((ev->mode != NotifyNormal || ev->detail == NotifyInferior) && ev->window != root)
604 if((c = getclient(ev->window)))
612 XExposeEvent *ev = &e->xexpose;
614 if(ev->count == 0 && (ev->window == barwin))
620 if(!c || !ISVISIBLE(c))
621 for(c = stack; c && !ISVISIBLE(c); c = c->snext);
622 if(sel && sel != c) {
623 grabbuttons(sel, False);
624 XSetWindowBorder(dpy, sel->win, dc.norm[ColBorder]);
629 grabbuttons(c, True);
630 XSetWindowBorder(dpy, c->win, dc.sel[ColBorder]);
631 XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
634 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
640 focusin(XEvent *e) { /* there are some broken focus acquiring clients */
641 XFocusChangeEvent *ev = &e->xfocus;
643 if(sel && ev->window != sel->win)
644 XSetInputFocus(dpy, sel->win, RevertToPointerRoot, CurrentTime);
648 focusstack(const Arg *arg) {
649 Client *c = NULL, *i;
654 for(c = sel->next; c && !ISVISIBLE(c); c = c->next);
656 for(c = clients; c && !ISVISIBLE(c); c = c->next);
659 for(i = clients; i != sel; i = i->next)
663 for(; i; i = i->next)
674 getclient(Window w) {
677 for(c = clients; c && c->win != w; c = c->next);
682 getcolor(const char *colstr) {
683 Colormap cmap = DefaultColormap(dpy, screen);
686 if(!XAllocNamedColor(dpy, cmap, colstr, &color, &color))
687 die("error, cannot allocate color '%s'\n", colstr);
695 unsigned char *p = NULL;
696 unsigned long n, extra;
699 status = XGetWindowProperty(dpy, w, wmatom[WMState], 0L, 2L, False, wmatom[WMState],
700 &real, &format, &n, &extra, (unsigned char **)&p);
701 if(status != Success)
710 gettextprop(Window w, Atom atom, char *text, unsigned int size) {
715 if(!text || size == 0)
718 XGetTextProperty(dpy, w, &name, atom);
721 if(name.encoding == XA_STRING)
722 strncpy(text, (char *)name.value, size - 1);
724 if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
726 strncpy(text, *list, size - 1);
727 XFreeStringList(list);
730 text[size - 1] = '\0';
736 grabbuttons(Client *c, Bool focused) {
738 unsigned int modifiers[] = { 0, LockMask, numlockmask, numlockmask|LockMask };
740 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
742 for(i = 0; i < LENGTH(buttons); i++)
743 if(buttons[i].click == ClkClientWin)
744 for(j = 0; j < LENGTH(modifiers); j++)
745 XGrabButton(dpy, buttons[i].button, buttons[i].mask | modifiers[j], c->win, False, BUTTONMASK, GrabModeAsync, GrabModeSync, None, None);
747 XGrabButton(dpy, AnyButton, AnyModifier, c->win, False,
748 BUTTONMASK, GrabModeAsync, GrabModeSync, None, None);
754 XModifierKeymap *modmap;
756 /* update modifier map */
757 modmap = XGetModifierMapping(dpy);
758 for(i = 0; i < 8; i++)
759 for(j = 0; j < modmap->max_keypermod; j++)
760 if(modmap->modifiermap[i * modmap->max_keypermod + j] == XKeysymToKeycode(dpy, XK_Num_Lock))
761 numlockmask = (1 << i);
762 XFreeModifiermap(modmap);
765 unsigned int modifiers[] = { 0, LockMask, numlockmask, numlockmask|LockMask };
768 XUngrabKey(dpy, AnyKey, AnyModifier, root);
769 for(i = 0; i < LENGTH(keys); i++) {
770 code = XKeysymToKeycode(dpy, keys[i].keysym);
771 for(j = 0; j < LENGTH(modifiers); j++)
772 XGrabKey(dpy, code, keys[i].mod | modifiers[j], root, True,
773 GrabModeAsync, GrabModeAsync);
779 initfont(const char *fontstr) {
780 char *def, **missing;
784 dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
787 fprintf(stderr, "dwm: missing fontset: %s\n", missing[n]);
788 XFreeStringList(missing);
791 XFontSetExtents *font_extents;
792 XFontStruct **xfonts;
794 dc.font.ascent = dc.font.descent = 0;
795 font_extents = XExtentsOfFontSet(dc.font.set);
796 n = XFontsOfFontSet(dc.font.set, &xfonts, &font_names);
797 for(i = 0, dc.font.ascent = 0, dc.font.descent = 0; i < n; i++) {
798 dc.font.ascent = MAX(dc.font.ascent, (*xfonts)->ascent);
799 dc.font.descent = MAX(dc.font.descent,(*xfonts)->descent);
805 XFreeFont(dpy, dc.font.xfont);
806 dc.font.xfont = NULL;
807 if(!(dc.font.xfont = XLoadQueryFont(dpy, fontstr))
808 && !(dc.font.xfont = XLoadQueryFont(dpy, "fixed")))
809 die("error, cannot load font: '%s'\n", fontstr);
810 dc.font.ascent = dc.font.xfont->ascent;
811 dc.font.descent = dc.font.xfont->descent;
813 dc.font.height = dc.font.ascent + dc.font.descent;
817 isprotodel(Client *c) {
822 if(XGetWMProtocols(dpy, c->win, &protocols, &n)) {
823 for(i = 0; !ret && i < n; i++)
824 if(protocols[i] == wmatom[WMDelete])
832 keypress(XEvent *e) {
838 keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
839 for(i = 0; i < LENGTH(keys); i++)
840 if(keysym == keys[i].keysym
841 && CLEANMASK(keys[i].mod) == CLEANMASK(ev->state)
843 keys[i].func(&(keys[i].arg));
847 killclient(const Arg *arg) {
852 if(isprotodel(sel)) {
853 ev.type = ClientMessage;
854 ev.xclient.window = sel->win;
855 ev.xclient.message_type = wmatom[WMProtocols];
856 ev.xclient.format = 32;
857 ev.xclient.data.l[0] = wmatom[WMDelete];
858 ev.xclient.data.l[1] = CurrentTime;
859 XSendEvent(dpy, sel->win, False, NoEventMask, &ev);
862 XKillClient(dpy, sel->win);
866 manage(Window w, XWindowAttributes *wa) {
867 Client *c, *t = NULL;
871 if(!(c = calloc(1, sizeof(Client))))
872 die("fatal: could not calloc() %u bytes\n", sizeof(Client));
880 c->oldbw = wa->border_width;
881 if(c->w == sw && c->h == sh) {
887 if(c->x + c->w + 2 * c->bw > sx + sw)
888 c->x = sx + sw - c->w - 2 * c->bw;
889 if(c->y + c->h + 2 * c->bw > sy + sh)
890 c->y = sy + sh - c->h - 2 * c->bw;
891 c->x = MAX(c->x, sx);
892 /* only fix client y-offset, if the client center might cover the bar */
893 c->y = MAX(c->y, ((by == 0) && (c->x + (c->w / 2) >= wx) && (c->x + (c->w / 2) < wx + ww)) ? bh : sy);
897 wc.border_width = c->bw;
898 XConfigureWindow(dpy, w, CWBorderWidth, &wc);
899 XSetWindowBorder(dpy, w, dc.norm[ColBorder]);
900 configure(c); /* propagates border_width, if size doesn't change */
902 XSelectInput(dpy, w, EnterWindowMask|FocusChangeMask|PropertyChangeMask|StructureNotifyMask);
903 grabbuttons(c, False);
905 if(XGetTransientForHint(dpy, w, &trans))
906 t = getclient(trans);
912 c->isfloating = trans != None || c->isfixed;
914 XRaiseWindow(dpy, c->win);
917 XMoveResizeWindow(dpy, c->win, c->x + 2 * sw, c->y, c->w, c->h); /* some windows require this */
918 XMapWindow(dpy, c->win);
919 setclientstate(c, NormalState);
924 mappingnotify(XEvent *e) {
925 XMappingEvent *ev = &e->xmapping;
927 XRefreshKeyboardMapping(ev);
928 if(ev->request == MappingKeyboard)
933 maprequest(XEvent *e) {
934 static XWindowAttributes wa;
935 XMapRequestEvent *ev = &e->xmaprequest;
937 if(!XGetWindowAttributes(dpy, ev->window, &wa))
939 if(wa.override_redirect)
941 if(!getclient(ev->window))
942 manage(ev->window, &wa);
949 for(c = nexttiled(clients); c; c = nexttiled(c->next))
950 resize(c, wx, wy, ww - 2 * c->bw, wh - 2 * c->bw, resizehints);
954 movemouse(const Arg *arg) {
955 int x, y, ocx, ocy, di, nx, ny;
966 if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
967 None, cursor[CurMove], CurrentTime) != GrabSuccess)
969 XQueryPointer(dpy, root, &dummy, &dummy, &x, &y, &di, &di, &dui);
971 XMaskEvent(dpy, MOUSEMASK|ExposureMask|SubstructureRedirectMask, &ev);
973 case ConfigureRequest:
976 handler[ev.type](&ev);
980 nx = ocx + (ev.xmotion.x - x);
981 ny = ocy + (ev.xmotion.y - y);
982 if(snap && nx >= wx && nx <= wx + ww
983 && ny >= wy && ny <= wy + wh) {
984 if(abs(wx - nx) < snap)
986 else if(abs((wx + ww) - (nx + c->w + 2 * c->bw)) < snap)
987 nx = wx + ww - c->w - 2 * c->bw;
988 if(abs(wy - ny) < snap)
990 else if(abs((wy + wh) - (ny + c->h + 2 * c->bw)) < snap)
991 ny = wy + wh - c->h - 2 * c->bw;
992 if(!c->isfloating && lt[sellt]->arrange && (abs(nx - c->x) > snap || abs(ny - c->y) > snap))
993 togglefloating(NULL);
995 if(!lt[sellt]->arrange || c->isfloating)
996 resize(c, nx, ny, c->w, c->h, False);
1000 while(ev.type != ButtonRelease);
1001 XUngrabPointer(dpy, CurrentTime);
1005 nexttiled(Client *c) {
1006 for(; c && (c->isfloating || !ISVISIBLE(c)); c = c->next);
1011 propertynotify(XEvent *e) {
1014 XPropertyEvent *ev = &e->xproperty;
1016 if(ev->state == PropertyDelete)
1017 return; /* ignore */
1018 if((c = getclient(ev->window))) {
1021 case XA_WM_TRANSIENT_FOR:
1022 XGetTransientForHint(dpy, c->win, &trans);
1023 if(!c->isfloating && (c->isfloating = (getclient(trans) != NULL)))
1026 case XA_WM_NORMAL_HINTS:
1034 if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
1043 quit(const Arg *arg) {
1044 readin = running = False;
1048 resize(Client *c, int x, int y, int w, int h, Bool sizehints) {
1052 /* set minimum possible */
1056 /* temporarily remove base dimensions */
1060 /* adjust for aspect limits */
1061 if(c->mina > 0 && c->maxa > 0) {
1062 if(c->maxa < (float) w/h)
1064 else if(c->mina > (float) h/w)
1068 /* adjust for increment value */
1074 /* restore base dimensions */
1078 w = MAX(w, c->minw);
1079 h = MAX(h, c->minh);
1082 w = MIN(w, c->maxw);
1085 h = MIN(h, c->maxh);
1087 if(w <= 0 || h <= 0)
1090 x = sw - w - 2 * c->bw;
1092 y = sh - h - 2 * c->bw;
1093 if(x + w + 2 * c->bw < sx)
1095 if(y + h + 2 * c->bw < sy)
1101 if(c->x != x || c->y != y || c->w != w || c->h != h) {
1104 c->w = wc.width = w;
1105 c->h = wc.height = h;
1106 wc.border_width = c->bw;
1107 XConfigureWindow(dpy, c->win,
1108 CWX|CWY|CWWidth|CWHeight|CWBorderWidth, &wc);
1115 resizemouse(const Arg *arg) {
1126 if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
1127 None, cursor[CurResize], CurrentTime) != GrabSuccess)
1129 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->bw - 1, c->h + c->bw - 1);
1131 XMaskEvent(dpy, MOUSEMASK|ExposureMask|SubstructureRedirectMask, &ev);
1133 case ConfigureRequest:
1136 handler[ev.type](&ev);
1140 nw = MAX(ev.xmotion.x - ocx - 2 * c->bw + 1, 1);
1141 nh = MAX(ev.xmotion.y - ocy - 2 * c->bw + 1, 1);
1143 if(snap && nw >= wx && nw <= wx + ww
1144 && nh >= wy && nh <= wy + wh) {
1145 if(!c->isfloating && lt[sellt]->arrange
1146 && (abs(nw - c->w) > snap || abs(nh - c->h) > snap))
1147 togglefloating(NULL);
1149 if(!lt[sellt]->arrange || c->isfloating)
1150 resize(c, c->x, c->y, nw, nh, True);
1154 while(ev.type != ButtonRelease);
1155 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->bw - 1, c->h + c->bw - 1);
1156 XUngrabPointer(dpy, CurrentTime);
1157 while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
1169 if(sel->isfloating || !lt[sellt]->arrange)
1170 XRaiseWindow(dpy, sel->win);
1171 if(lt[sellt]->arrange) {
1172 wc.stack_mode = Below;
1173 wc.sibling = barwin;
1174 for(c = stack; c; c = c->snext)
1175 if(!c->isfloating && ISVISIBLE(c)) {
1176 XConfigureWindow(dpy, c->win, CWSibling|CWStackMode, &wc);
1177 wc.sibling = c->win;
1181 while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
1187 char sbuf[sizeof stext];
1190 unsigned int len, offset;
1193 /* main event loop, also reads status text from stdin */
1195 xfd = ConnectionNumber(dpy);
1197 len = sizeof stext - 1;
1198 sbuf[len] = stext[len] = '\0'; /* 0-terminator is never touched */
1202 FD_SET(STDIN_FILENO, &rd);
1204 if(select(xfd + 1, &rd, NULL, NULL, NULL) == -1) {
1207 die("select failed\n");
1209 if(FD_ISSET(STDIN_FILENO, &rd)) {
1210 switch((r = read(STDIN_FILENO, sbuf + offset, len - offset))) {
1212 strncpy(stext, strerror(errno), len);
1216 strncpy(stext, "EOF", 4);
1220 for(p = sbuf + offset; r > 0; p++, r--, offset++)
1221 if(*p == '\n' || *p == '\0') {
1223 strncpy(stext, sbuf, len);
1224 p += r - 1; /* p is sbuf + offset + r - 1 */
1225 for(r = 0; *(p - r) && *(p - r) != '\n'; r++);
1228 memmove(sbuf, p - r + 1, r);
1235 while(XPending(dpy)) {
1236 XNextEvent(dpy, &ev);
1237 if(handler[ev.type])
1238 (handler[ev.type])(&ev); /* call handler */
1245 unsigned int i, num;
1246 Window d1, d2, *wins = NULL;
1247 XWindowAttributes wa;
1249 if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
1250 for(i = 0; i < num; i++) {
1251 if(!XGetWindowAttributes(dpy, wins[i], &wa)
1252 || wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
1254 if(wa.map_state == IsViewable || getstate(wins[i]) == IconicState)
1255 manage(wins[i], &wa);
1257 for(i = 0; i < num; i++) { /* now the transients */
1258 if(!XGetWindowAttributes(dpy, wins[i], &wa))
1260 if(XGetTransientForHint(dpy, wins[i], &d1)
1261 && (wa.map_state == IsViewable || getstate(wins[i]) == IconicState))
1262 manage(wins[i], &wa);
1270 setclientstate(Client *c, long state) {
1271 long data[] = {state, None};
1273 XChangeProperty(dpy, c->win, wmatom[WMState], wmatom[WMState], 32,
1274 PropModeReplace, (unsigned char *)data, 2);
1278 setlayout(const Arg *arg) {
1279 if(!arg || !arg->v || arg->v != lt[sellt])
1282 lt[sellt] = (Layout *)arg->v;
1289 /* arg > 1.0 will set mfact absolutly */
1291 setmfact(const Arg *arg) {
1294 if(!arg || !lt[sellt]->arrange)
1296 f = arg->f < 1.0 ? arg->f + mfact : arg->f - 1.0;
1297 if(f < 0.1 || f > 0.9)
1307 XSetWindowAttributes wa;
1310 screen = DefaultScreen(dpy);
1311 root = RootWindow(dpy, screen);
1315 sw = DisplayWidth(dpy, screen);
1316 sh = DisplayHeight(dpy, screen);
1317 bh = dc.h = dc.font.height + 2;
1318 lt[0] = &layouts[0];
1319 lt[1] = &layouts[1 % LENGTH(layouts)];
1323 wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
1324 wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
1325 wmatom[WMName] = XInternAtom(dpy, "WM_NAME", False);
1326 wmatom[WMState] = XInternAtom(dpy, "WM_STATE", False);
1327 netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
1328 netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
1331 wa.cursor = cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
1332 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
1333 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
1335 /* init appearance */
1336 dc.norm[ColBorder] = getcolor(normbordercolor);
1337 dc.norm[ColBG] = getcolor(normbgcolor);
1338 dc.norm[ColFG] = getcolor(normfgcolor);
1339 dc.sel[ColBorder] = getcolor(selbordercolor);
1340 dc.sel[ColBG] = getcolor(selbgcolor);
1341 dc.sel[ColFG] = getcolor(selfgcolor);
1342 dc.drawable = XCreatePixmap(dpy, root, DisplayWidth(dpy, screen), bh, DefaultDepth(dpy, screen));
1343 dc.gc = XCreateGC(dpy, root, 0, 0);
1344 XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
1346 XSetFont(dpy, dc.gc, dc.font.xfont->fid);
1349 for(blw = i = 0; LENGTH(layouts) > 1 && i < LENGTH(layouts); i++) {
1350 w = TEXTW(layouts[i].symbol);
1354 wa.override_redirect = 1;
1355 wa.background_pixmap = ParentRelative;
1356 wa.event_mask = ButtonPressMask|ExposureMask;
1358 barwin = XCreateWindow(dpy, root, wx, by, ww, bh, 0, DefaultDepth(dpy, screen),
1359 CopyFromParent, DefaultVisual(dpy, screen),
1360 CWOverrideRedirect|CWBackPixmap|CWEventMask, &wa);
1361 XDefineCursor(dpy, barwin, cursor[CurNormal]);
1362 XMapRaised(dpy, barwin);
1363 strcpy(stext, "dwm-"VERSION);
1366 /* EWMH support per view */
1367 XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
1368 PropModeReplace, (unsigned char *) netatom, NetLast);
1370 /* select for events */
1371 wa.event_mask = SubstructureRedirectMask|SubstructureNotifyMask|ButtonPressMask
1372 |EnterWindowMask|LeaveWindowMask|StructureNotifyMask;
1373 XChangeWindowAttributes(dpy, root, CWEventMask|CWCursor, &wa);
1374 XSelectInput(dpy, root, wa.event_mask);
1380 spawn(const Arg *arg) {
1381 /* The double-fork construct avoids zombie processes and keeps the code
1382 * clean from stupid signal handlers. */
1386 close(ConnectionNumber(dpy));
1388 execvp(((char **)arg->v)[0], (char **)arg->v);
1389 fprintf(stderr, "dwm: execvp %s", ((char **)arg->v)[0]);
1398 tag(const Arg *arg) {
1399 if(sel && arg->ui & TAGMASK) {
1400 sel->tags = arg->ui & TAGMASK;
1406 textnw(const char *text, unsigned int len) {
1410 XmbTextExtents(dc.font.set, text, len, NULL, &r);
1413 return XTextWidth(dc.font.xfont, text, len);
1422 for(n = 0, c = nexttiled(clients); c; c = nexttiled(c->next), n++);
1427 c = nexttiled(clients);
1429 resize(c, wx, wy, (n == 1 ? ww : mw) - 2 * c->bw, wh - 2 * c->bw, resizehints);
1435 x = (wx + mw > c->x + c->w) ? c->x + c->w + 2 * c->bw : wx + mw;
1437 w = (wx + mw > c->x + c->w) ? wx + ww - x : ww - mw;
1442 for(i = 0, c = nexttiled(c->next); c; c = nexttiled(c->next), i++) {
1443 resize(c, x, y, w - 2 * c->bw, /* remainder */ ((i + 1 == n)
1444 ? (wy + wh) - y : h) - 2 * c->bw, resizehints);
1446 y = c->y + c->h + 2 * c->bw;
1451 togglebar(const Arg *arg) {
1459 togglefloating(const Arg *arg) {
1462 sel->isfloating = !sel->isfloating || sel->isfixed;
1464 resize(sel, sel->x, sel->y, sel->w, sel->h, True);
1469 toggletag(const Arg *arg) {
1475 mask = sel->tags ^ (arg->ui & TAGMASK);
1483 toggleview(const Arg *arg) {
1484 unsigned int mask = tagset[seltags] ^ (arg->ui & TAGMASK);
1487 tagset[seltags] = mask;
1494 unmanage(Client *c) {
1497 wc.border_width = c->oldbw;
1498 /* The server grab construct avoids race conditions. */
1500 XSetErrorHandler(xerrordummy);
1501 XConfigureWindow(dpy, c->win, CWBorderWidth, &wc); /* restore border */
1506 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
1507 setclientstate(c, WithdrawnState);
1510 XSetErrorHandler(xerror);
1516 unmapnotify(XEvent *e) {
1518 XUnmapEvent *ev = &e->xunmap;
1520 if((c = getclient(ev->window)))
1526 if(dc.drawable != 0)
1527 XFreePixmap(dpy, dc.drawable);
1528 dc.drawable = XCreatePixmap(dpy, root, ww, bh, DefaultDepth(dpy, screen));
1529 XMoveResizeWindow(dpy, barwin, wx, by, ww, bh);
1536 XineramaScreenInfo *info = NULL;
1538 /* window area geometry */
1539 if(XineramaIsActive(dpy) && (info = XineramaQueryScreens(dpy, &n))) {
1544 if(XQueryPointer(dpy, root, &dummy, &dummy, &x, &y, &di, &di, &dui))
1545 for(i = 0; i < n; i++)
1546 if(INRECT(x, y, info[i].x_org, info[i].y_org, info[i].width, info[i].height))
1550 wy = showbar && topbar ? info[i].y_org + bh : info[i].y_org;
1552 wh = showbar ? info[i].height - bh : info[i].height;
1559 wy = showbar && topbar ? sy + bh : sy;
1561 wh = showbar ? sh - bh : sh;
1565 by = showbar ? (topbar ? wy - bh : wy + wh) : -bh;
1569 updatesizehints(Client *c) {
1573 XGetWMNormalHints(dpy, c->win, &size, &msize);
1574 if(size.flags & PBaseSize) {
1575 c->basew = size.base_width;
1576 c->baseh = size.base_height;
1578 else if(size.flags & PMinSize) {
1579 c->basew = size.min_width;
1580 c->baseh = size.min_height;
1583 c->basew = c->baseh = 0;
1584 if(size.flags & PResizeInc) {
1585 c->incw = size.width_inc;
1586 c->inch = size.height_inc;
1589 c->incw = c->inch = 0;
1590 if(size.flags & PMaxSize) {
1591 c->maxw = size.max_width;
1592 c->maxh = size.max_height;
1595 c->maxw = c->maxh = 0;
1596 if(size.flags & PMinSize) {
1597 c->minw = size.min_width;
1598 c->minh = size.min_height;
1600 else if(size.flags & PBaseSize) {
1601 c->minw = size.base_width;
1602 c->minh = size.base_height;
1605 c->minw = c->minh = 0;
1606 if(size.flags & PAspect) {
1607 c->mina = (float)size.min_aspect.y / (float)size.min_aspect.x;
1608 c->maxa = (float)size.max_aspect.x / (float)size.max_aspect.y;
1611 c->maxa = c->mina = 0.0;
1612 c->isfixed = (c->maxw && c->minw && c->maxh && c->minh
1613 && c->maxw == c->minw && c->maxh == c->minh);
1617 updatetitle(Client *c) {
1618 if(!gettextprop(c->win, netatom[NetWMName], c->name, sizeof c->name))
1619 gettextprop(c->win, wmatom[WMName], c->name, sizeof c->name);
1623 updatewmhints(Client *c) {
1626 if((wmh = XGetWMHints(dpy, c->win))) {
1627 if(ISVISIBLE(c) && wmh->flags & XUrgencyHint) {
1628 wmh->flags &= ~XUrgencyHint;
1629 XSetWMHints(dpy, c->win, wmh);
1632 c->isurgent = (wmh->flags & XUrgencyHint) ? True : False;
1639 view(const Arg *arg) {
1640 if((arg->ui & TAGMASK) == tagset[seltags])
1642 seltags ^= 1; /* toggle sel tagset */
1643 if(arg->ui & TAGMASK)
1644 tagset[seltags] = arg->ui & TAGMASK;
1649 /* There's no way to check accesses to destroyed windows, thus those cases are
1650 * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
1651 * default error handler, which may call exit. */
1653 xerror(Display *dpy, XErrorEvent *ee) {
1654 if(ee->error_code == BadWindow
1655 || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
1656 || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
1657 || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
1658 || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
1659 || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
1660 || (ee->request_code == X_GrabButton && ee->error_code == BadAccess)
1661 || (ee->request_code == X_GrabKey && ee->error_code == BadAccess)
1662 || (ee->request_code == X_CopyArea && ee->error_code == BadDrawable))
1664 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
1665 ee->request_code, ee->error_code);
1666 return xerrorxlib(dpy, ee); /* may call exit */
1670 xerrordummy(Display *dpy, XErrorEvent *ee) {
1674 /* Startup Error handler to check if another window manager
1675 * is already running. */
1677 xerrorstart(Display *dpy, XErrorEvent *ee) {
1683 zoom(const Arg *arg) {
1686 if(!lt[sellt]->arrange || lt[sellt]->arrange == monocle || (sel && sel->isfloating))
1688 if(c == nexttiled(clients))
1689 if(!c || !(c = nexttiled(c->next)))
1698 main(int argc, char *argv[]) {
1699 if(argc == 2 && !strcmp("-v", argv[1]))
1700 die("dwm-"VERSION", © 2006-2008 dwm engineers, see LICENSE for details\n");
1702 die("usage: dwm [-v]\n");
1704 if(!XSupportsLocale())
1705 fprintf(stderr, "warning: no locale support\n");
1707 if(!(dpy = XOpenDisplay(0)))
1708 die("dwm: cannot open display\n");