1 /* See LICENSE file for copyright and license details.
3 * dynamic window manager is designed like any other X client as well. It is
4 * driven through handling X events. In contrast to other X clients, a window
5 * manager selects for SubstructureRedirectMask on the root window, to receive
6 * events about window (dis-)appearance. Only one X connection at a time is
7 * allowed to select for this event mask.
9 * The event handlers of dwm are organized in an array which is accessed
10 * whenever a new event has been fetched. This allows event dispatching
13 * Each child of the root window is called a client, except windows which have
14 * set the override_redirect flag. Clients are organized in a global
15 * linked client list, the focus history is remembered through a global
16 * stack list. Each client contains a bit array to indicate the tags of a
19 * Keys and tagging rules are organized as arrays and defined in config.h.
21 * To understand everything else, start reading main().
31 #include <sys/types.h>
33 #include <X11/cursorfont.h>
34 #include <X11/keysym.h>
35 #include <X11/Xatom.h>
37 #include <X11/Xproto.h>
38 #include <X11/Xutil.h>
40 #include <X11/extensions/Xinerama.h>
44 #define BUTTONMASK (ButtonPressMask|ButtonReleaseMask)
45 #define CLEANMASK(mask) (mask & ~(numlockmask|LockMask))
46 #define INRECT(X,Y,RX,RY,RW,RH) ((X) >= (RX) && (X) < (RX) + (RW) && (Y) >= (RY) && (Y) < (RY) + (RH))
47 #define ISVISIBLE(x) (x->tags & tagset[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))
52 #define MOUSEMASK (BUTTONMASK|PointerMotionMask)
53 #define WIDTH(x) ((x)->w + 2 * (x)->bw)
54 #define HEIGHT(x) ((x)->h + 2 * (x)->bw)
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, 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 applysizehints(Client *c, int *w, int *h);
133 static void arrange(void);
134 static void attach(Client *c);
135 static void attachstack(Client *c);
136 static void buttonpress(XEvent *e);
137 static void checkotherwm(void);
138 static void cleanup(void);
139 static void clearurgent(Client *c);
140 static void configure(Client *c);
141 static void configurenotify(XEvent *e);
142 static void configurerequest(XEvent *e);
143 static void destroynotify(XEvent *e);
144 static void detach(Client *c);
145 static void detachstack(Client *c);
146 static void die(const char *errstr, ...);
147 static void drawbar(void);
148 static void drawsquare(Bool filled, Bool empty, Bool invert, unsigned long col[ColLast]);
149 static void drawtext(const char *text, unsigned long col[ColLast], Bool invert);
150 static void enternotify(XEvent *e);
151 static void expose(XEvent *e);
152 static void focus(Client *c);
153 static void focusin(XEvent *e);
154 static void focusstack(const Arg *arg);
155 static Client *getclient(Window w);
156 static unsigned long getcolor(const char *colstr);
157 static long getstate(Window w);
158 static Bool gettextprop(Window w, Atom atom, char *text, unsigned int size);
159 static void grabbuttons(Client *c, Bool focused);
160 static void grabkeys(void);
161 static void initfont(const char *fontstr);
162 static Bool isprotodel(Client *c);
163 static void keypress(XEvent *e);
164 static void killclient(const Arg *arg);
165 static void manage(Window w, XWindowAttributes *wa);
166 static void mappingnotify(XEvent *e);
167 static void maprequest(XEvent *e);
168 static void monocle(void);
169 static void movemouse(const Arg *arg);
170 static Client *nexttiled(Client *c);
171 static void propertynotify(XEvent *e);
172 static void quit(const Arg *arg);
173 static void resize(Client *c, int x, int y, int w, int h);
174 static void resizemouse(const Arg *arg);
175 static void restack(void);
176 static void run(void);
177 static void scan(void);
178 static void setclientstate(Client *c, long state);
179 static void setlayout(const Arg *arg);
180 static void setmfact(const Arg *arg);
181 static void setup(void);
182 static void showhide(Client *c, unsigned int ntiled);
183 static void sigchld(int signal);
184 static void spawn(const Arg *arg);
185 static void tag(const Arg *arg);
186 static int textnw(const char *text, unsigned int len);
187 static void tile(void);
188 static void togglebar(const Arg *arg);
189 static void togglefloating(const Arg *arg);
190 static void toggletag(const Arg *arg);
191 static void toggleview(const Arg *arg);
192 static void unmanage(Client *c);
193 static void unmapnotify(XEvent *e);
194 static void updatebar(void);
195 static void updategeom(void);
196 static void updatenumlockmask(void);
197 static void updatesizehints(Client *c);
198 static void updatestatus(void);
199 static void updatetitle(Client *c);
200 static void updatewmhints(Client *c);
201 static void view(const Arg *arg);
202 static int xerror(Display *dpy, XErrorEvent *ee);
203 static int xerrordummy(Display *dpy, XErrorEvent *ee);
204 static int xerrorstart(Display *dpy, XErrorEvent *ee);
205 static void zoom(const Arg *arg);
208 static char stext[256];
210 static int sx, sy, sw, sh; /* X display screen geometry x, y, width, height */
211 static int by, bh, blw; /* bar geometry y, height and layout symbol width */
212 static int wx, wy, ww, wh; /* window area geometry x, y, width, height, bar excluded */
213 static unsigned int seltags = 0, sellt = 0;
214 static int (*xerrorxlib)(Display *, XErrorEvent *);
215 static unsigned int numlockmask = 0;
216 static void (*handler[LASTEvent]) (XEvent *) = {
217 [ButtonPress] = buttonpress,
218 [ConfigureRequest] = configurerequest,
219 [ConfigureNotify] = configurenotify,
220 [DestroyNotify] = destroynotify,
221 [EnterNotify] = enternotify,
224 [KeyPress] = keypress,
225 [MappingNotify] = mappingnotify,
226 [MapRequest] = maprequest,
227 [PropertyNotify] = propertynotify,
228 [UnmapNotify] = unmapnotify
230 static Atom wmatom[WMLast], netatom[NetLast];
232 static Bool running = True;
233 static Client *clients = NULL;
234 static Client *sel = NULL;
235 static Client *stack = NULL;
236 static Cursor cursor[CurLast];
239 static Layout *lt[] = { NULL, NULL };
240 static Window root, barwin;
241 /* configuration, allows nested code to access above variables */
244 /* compile-time check if all tags fit into an unsigned int bit array. */
245 struct NumTags { char limitexceeded[sizeof(unsigned int) * 8 < LENGTH(tags) ? -1 : 1]; };
247 /* function implementations */
249 applyrules(Client *c) {
252 XClassHint ch = { 0 };
255 if(XGetClassHint(dpy, c->win, &ch)) {
256 for(i = 0; i < LENGTH(rules); i++) {
258 if((!r->title || strstr(c->name, r->title))
259 && (!r->class || (ch.res_class && strstr(ch.res_class, r->class)))
260 && (!r->instance || (ch.res_name && strstr(ch.res_name, r->instance)))) {
261 c->isfloating = r->isfloating;
262 c->tags |= r->tags & TAGMASK ? r->tags & TAGMASK : tagset[seltags];
271 c->tags = tagset[seltags];
275 applysizehints(Client *c, int *w, int *h) {
278 if(!resizehints && !c->isfloating)
281 /* see last two sentences in ICCCM 4.1.2.3 */
282 baseismin = c->basew == c->minw && c->baseh == c->minh;
284 /* set minimum possible */
288 if(!baseismin) { /* temporarily remove base dimensions */
293 /* adjust for aspect limits */
294 if(c->mina > 0 && c->maxa > 0) {
295 if(c->maxa < (float)*w / *h)
297 else if(c->mina < (float)*h / *w)
301 if(baseismin) { /* increment calculation requires this */
306 /* adjust for increment value */
312 /* restore base dimensions */
316 *w = MAX(*w, c->minw);
317 *h = MAX(*h, c->minh);
320 *w = MIN(*w, c->maxw);
323 *h = MIN(*h, c->maxh);
331 for(nt = 0, c = nexttiled(clients); c; c = nexttiled(c->next), nt++);
334 if(lt[sellt]->arrange)
335 lt[sellt]->arrange();
346 attachstack(Client *c) {
352 buttonpress(XEvent *e) {
353 unsigned int i, x, click;
356 XButtonPressedEvent *ev = &e->xbutton;
359 if(ev->window == barwin) {
361 do x += TEXTW(tags[i]); while(ev->x >= x && ++i < LENGTH(tags));
362 if(i < LENGTH(tags)) {
366 else if(ev->x < x + blw)
368 else if(ev->x > wx + ww - TEXTW(stext))
369 click = ClkStatusText;
373 else if((c = getclient(ev->window))) {
375 click = ClkClientWin;
378 for(i = 0; i < LENGTH(buttons); i++)
379 if(click == buttons[i].click && buttons[i].func && buttons[i].button == ev->button
380 && CLEANMASK(buttons[i].mask) == CLEANMASK(ev->state))
381 buttons[i].func(click == ClkTagBar && buttons[i].arg.i == 0 ? &arg : &buttons[i].arg);
387 xerrorxlib = XSetErrorHandler(xerrorstart);
389 /* this causes an error if some other window manager is running */
390 XSelectInput(dpy, DefaultRootWindow(dpy), SubstructureRedirectMask);
393 die("dwm: another window manager is already running\n");
394 XSetErrorHandler(xerror);
401 Layout foo = { "", NULL };
408 XFreeFontSet(dpy, dc.font.set);
410 XFreeFont(dpy, dc.font.xfont);
411 XUngrabKey(dpy, AnyKey, AnyModifier, root);
412 XFreePixmap(dpy, dc.drawable);
414 XFreeCursor(dpy, cursor[CurNormal]);
415 XFreeCursor(dpy, cursor[CurResize]);
416 XFreeCursor(dpy, cursor[CurMove]);
417 XDestroyWindow(dpy, barwin);
419 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
423 clearurgent(Client *c) {
427 if(!(wmh = XGetWMHints(dpy, c->win)))
429 wmh->flags &= ~XUrgencyHint;
430 XSetWMHints(dpy, c->win, wmh);
435 configure(Client *c) {
438 ce.type = ConfigureNotify;
446 ce.border_width = c->bw;
448 ce.override_redirect = False;
449 XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&ce);
453 configurenotify(XEvent *e) {
454 XConfigureEvent *ev = &e->xconfigure;
456 if(ev->window == root && (ev->width != sw || ev->height != sh)) {
466 configurerequest(XEvent *e) {
468 XConfigureRequestEvent *ev = &e->xconfigurerequest;
471 if((c = getclient(ev->window))) {
472 if(ev->value_mask & CWBorderWidth)
473 c->bw = ev->border_width;
474 else if(c->isfloating || !lt[sellt]->arrange) {
475 if(ev->value_mask & CWX)
477 if(ev->value_mask & CWY)
479 if(ev->value_mask & CWWidth)
481 if(ev->value_mask & CWHeight)
483 if((c->x - sx + c->w) > sw && c->isfloating)
484 c->x = sx + (sw / 2 - c->w / 2); /* center in x direction */
485 if((c->y - sy + c->h) > sh && c->isfloating)
486 c->y = sy + (sh / 2 - c->h / 2); /* center in y direction */
487 if((ev->value_mask & (CWX|CWY)) && !(ev->value_mask & (CWWidth|CWHeight)))
490 XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
498 wc.width = ev->width;
499 wc.height = ev->height;
500 wc.border_width = ev->border_width;
501 wc.sibling = ev->above;
502 wc.stack_mode = ev->detail;
503 XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
509 destroynotify(XEvent *e) {
511 XDestroyWindowEvent *ev = &e->xdestroywindow;
513 if((c = getclient(ev->window)))
521 for(tc = &clients; *tc && *tc != c; tc = &(*tc)->next);
526 detachstack(Client *c) {
529 for(tc = &stack; *tc && *tc != c; tc = &(*tc)->snext);
534 die(const char *errstr, ...) {
537 va_start(ap, errstr);
538 vfprintf(stderr, errstr, ap);
546 unsigned int i, occ = 0, urg = 0;
550 for(c = clients; c; c = c->next) {
557 for(i = 0; i < LENGTH(tags); i++) {
558 dc.w = TEXTW(tags[i]);
559 col = tagset[seltags] & 1 << i ? dc.sel : dc.norm;
560 drawtext(tags[i], col, urg & 1 << i);
561 drawsquare(sel && sel->tags & 1 << i, occ & 1 << i, urg & 1 << i, col);
566 drawtext(lt[sellt]->symbol, dc.norm, False);
577 drawtext(stext, dc.norm, False);
578 if((dc.w = dc.x - x) > bh) {
581 drawtext(sel->name, dc.sel, False);
582 drawsquare(sel->isfixed, sel->isfloating, False, dc.sel);
585 drawtext(NULL, dc.norm, False);
587 XCopyArea(dpy, dc.drawable, barwin, dc.gc, 0, 0, ww, bh, 0, 0);
592 drawsquare(Bool filled, Bool empty, Bool invert, unsigned long col[ColLast]) {
595 XRectangle r = { dc.x, dc.y, dc.w, dc.h };
597 gcv.foreground = col[invert ? ColBG : ColFG];
598 XChangeGC(dpy, dc.gc, GCForeground, &gcv);
599 x = (dc.font.ascent + dc.font.descent + 2) / 4;
603 r.width = r.height = x + 1;
604 XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
607 r.width = r.height = x;
608 XDrawRectangles(dpy, dc.drawable, dc.gc, &r, 1);
613 drawtext(const char *text, unsigned long col[ColLast], Bool invert) {
615 int i, x, y, h, len, olen;
616 XRectangle r = { dc.x, dc.y, dc.w, dc.h };
618 XSetForeground(dpy, dc.gc, col[invert ? ColFG : ColBG]);
619 XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
623 h = dc.font.ascent + dc.font.descent;
624 y = dc.y + (dc.h / 2) - (h / 2) + dc.font.ascent;
626 /* shorten text if necessary */
627 for(len = MIN(olen, sizeof buf); len && textnw(text, len) > dc.w - h; len--);
630 memcpy(buf, text, len);
632 for(i = len; i && i > len - 3; buf[--i] = '.');
633 XSetForeground(dpy, dc.gc, col[invert ? ColBG : ColFG]);
635 XmbDrawString(dpy, dc.drawable, dc.font.set, dc.gc, x, y, buf, len);
637 XDrawString(dpy, dc.drawable, dc.gc, x, y, buf, len);
641 enternotify(XEvent *e) {
643 XCrossingEvent *ev = &e->xcrossing;
645 if((ev->mode != NotifyNormal || ev->detail == NotifyInferior) && ev->window != root)
647 if((c = getclient(ev->window)))
655 XExposeEvent *ev = &e->xexpose;
657 if(ev->count == 0 && (ev->window == barwin))
663 if(!c || !ISVISIBLE(c))
664 for(c = stack; c && !ISVISIBLE(c); c = c->snext);
665 if(sel && sel != c) {
666 grabbuttons(sel, False);
667 XSetWindowBorder(dpy, sel->win, dc.norm[ColBorder]);
674 grabbuttons(c, True);
675 XSetWindowBorder(dpy, c->win, dc.sel[ColBorder]);
676 XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
679 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
685 focusin(XEvent *e) { /* there are some broken focus acquiring clients */
686 XFocusChangeEvent *ev = &e->xfocus;
688 if(sel && ev->window != sel->win)
689 XSetInputFocus(dpy, sel->win, RevertToPointerRoot, CurrentTime);
693 focusstack(const Arg *arg) {
694 Client *c = NULL, *i;
699 for(c = sel->next; c && !ISVISIBLE(c); c = c->next);
701 for(c = clients; c && !ISVISIBLE(c); c = c->next);
704 for(i = clients; i != sel; i = i->next)
708 for(; i; i = i->next)
719 getclient(Window w) {
722 for(c = clients; c && c->win != w; c = c->next);
727 getcolor(const char *colstr) {
728 Colormap cmap = DefaultColormap(dpy, screen);
731 if(!XAllocNamedColor(dpy, cmap, colstr, &color, &color))
732 die("error, cannot allocate color '%s'\n", colstr);
740 unsigned char *p = NULL;
741 unsigned long n, extra;
744 status = XGetWindowProperty(dpy, w, wmatom[WMState], 0L, 2L, False, wmatom[WMState],
745 &real, &format, &n, &extra, (unsigned char **)&p);
746 if(status != Success)
755 gettextprop(Window w, Atom atom, char *text, unsigned int size) {
760 if(!text || size == 0)
763 XGetTextProperty(dpy, w, &name, atom);
766 if(name.encoding == XA_STRING)
767 strncpy(text, (char *)name.value, size - 1);
769 if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
771 strncpy(text, *list, size - 1);
772 XFreeStringList(list);
775 text[size - 1] = '\0';
781 grabbuttons(Client *c, Bool focused) {
785 unsigned int modifiers[] = { 0, LockMask, numlockmask, numlockmask|LockMask };
786 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
788 for(i = 0; i < LENGTH(buttons); i++)
789 if(buttons[i].click == ClkClientWin)
790 for(j = 0; j < LENGTH(modifiers); j++)
791 XGrabButton(dpy, buttons[i].button, buttons[i].mask | modifiers[j], c->win, False, BUTTONMASK, GrabModeAsync, GrabModeSync, None, None);
793 XGrabButton(dpy, AnyButton, AnyModifier, c->win, False,
794 BUTTONMASK, GrabModeAsync, GrabModeSync, None, None);
803 unsigned int modifiers[] = { 0, LockMask, numlockmask, numlockmask|LockMask };
806 XUngrabKey(dpy, AnyKey, AnyModifier, root);
807 for(i = 0; i < LENGTH(keys); i++) {
808 if((code = XKeysymToKeycode(dpy, keys[i].keysym)))
809 for(j = 0; j < LENGTH(modifiers); j++)
810 XGrabKey(dpy, code, keys[i].mod | modifiers[j], root,
811 True, GrabModeAsync, GrabModeAsync);
817 initfont(const char *fontstr) {
818 char *def, **missing;
822 dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
825 fprintf(stderr, "dwm: missing fontset: %s\n", missing[n]);
826 XFreeStringList(missing);
829 XFontSetExtents *font_extents;
830 XFontStruct **xfonts;
832 dc.font.ascent = dc.font.descent = 0;
833 font_extents = XExtentsOfFontSet(dc.font.set);
834 n = XFontsOfFontSet(dc.font.set, &xfonts, &font_names);
835 for(i = 0, dc.font.ascent = 0, dc.font.descent = 0; i < n; i++) {
836 dc.font.ascent = MAX(dc.font.ascent, (*xfonts)->ascent);
837 dc.font.descent = MAX(dc.font.descent,(*xfonts)->descent);
842 if(!(dc.font.xfont = XLoadQueryFont(dpy, fontstr))
843 && !(dc.font.xfont = XLoadQueryFont(dpy, "fixed")))
844 die("error, cannot load font: '%s'\n", fontstr);
845 dc.font.ascent = dc.font.xfont->ascent;
846 dc.font.descent = dc.font.xfont->descent;
848 dc.font.height = dc.font.ascent + dc.font.descent;
852 isprotodel(Client *c) {
857 if(XGetWMProtocols(dpy, c->win, &protocols, &n)) {
858 for(i = 0; !ret && i < n; i++)
859 if(protocols[i] == wmatom[WMDelete])
867 keypress(XEvent *e) {
873 keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
874 for(i = 0; i < LENGTH(keys); i++)
875 if(keysym == keys[i].keysym
876 && CLEANMASK(keys[i].mod) == CLEANMASK(ev->state)
878 keys[i].func(&(keys[i].arg));
882 killclient(const Arg *arg) {
887 if(isprotodel(sel)) {
888 ev.type = ClientMessage;
889 ev.xclient.window = sel->win;
890 ev.xclient.message_type = wmatom[WMProtocols];
891 ev.xclient.format = 32;
892 ev.xclient.data.l[0] = wmatom[WMDelete];
893 ev.xclient.data.l[1] = CurrentTime;
894 XSendEvent(dpy, sel->win, False, NoEventMask, &ev);
897 XKillClient(dpy, sel->win);
901 manage(Window w, XWindowAttributes *wa) {
903 Client *c, *t = NULL;
907 if(!(c = malloc(sizeof(Client))))
908 die("fatal: could not malloc() %u bytes\n", sizeof(Client));
917 c->oldbw = wa->border_width;
918 if(c->w == sw && c->h == sh) {
924 if(c->x + WIDTH(c) > sx + sw)
925 c->x = sx + sw - WIDTH(c);
926 if(c->y + HEIGHT(c) > sy + sh)
927 c->y = sy + sh - HEIGHT(c);
928 c->x = MAX(c->x, sx);
929 /* only fix client y-offset, if the client center might cover the bar */
930 c->y = MAX(c->y, ((by == 0) && (c->x + (c->w / 2) >= wx) && (c->x + (c->w / 2) < wx + ww)) ? bh : sy);
934 wc.border_width = c->bw;
935 XConfigureWindow(dpy, w, CWBorderWidth, &wc);
936 XSetWindowBorder(dpy, w, dc.norm[ColBorder]);
937 configure(c); /* propagates border_width, if size doesn't change */
939 XSelectInput(dpy, w, EnterWindowMask|FocusChangeMask|PropertyChangeMask|StructureNotifyMask);
940 grabbuttons(c, False);
942 if(XGetTransientForHint(dpy, w, &trans))
943 t = getclient(trans);
949 c->isfloating = trans != None || c->isfixed;
951 XRaiseWindow(dpy, c->win);
954 XMoveResizeWindow(dpy, c->win, c->x + 2 * sw, c->y, c->w, c->h); /* some windows require this */
955 XMapWindow(dpy, c->win);
956 setclientstate(c, NormalState);
961 mappingnotify(XEvent *e) {
962 XMappingEvent *ev = &e->xmapping;
964 XRefreshKeyboardMapping(ev);
965 if(ev->request == MappingKeyboard)
970 maprequest(XEvent *e) {
971 static XWindowAttributes wa;
972 XMapRequestEvent *ev = &e->xmaprequest;
974 if(!XGetWindowAttributes(dpy, ev->window, &wa))
976 if(wa.override_redirect)
978 if(!getclient(ev->window))
979 manage(ev->window, &wa);
986 for(c = nexttiled(clients); c; c = nexttiled(c->next)) {
987 resize(c, wx, wy, ww - 2 * c->bw, wh - 2 * c->bw);
992 movemouse(const Arg *arg) {
993 int x, y, ocx, ocy, di, nx, ny;
1004 if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
1005 None, cursor[CurMove], CurrentTime) != GrabSuccess)
1007 XQueryPointer(dpy, root, &dummy, &dummy, &x, &y, &di, &di, &dui);
1011 XMaskEvent(dpy, MOUSEMASK|ExposureMask|SubstructureRedirectMask, &ev);
1013 case ConfigureRequest:
1016 handler[ev.type](&ev);
1019 nx = ocx + (ev.xmotion.x - x);
1020 ny = ocy + (ev.xmotion.y - y);
1021 if(snap && nx >= wx && nx <= wx + ww
1022 && ny >= wy && ny <= wy + wh) {
1023 if(abs(wx - nx) < snap)
1025 else if(abs((wx + ww) - (nx + WIDTH(c))) < snap)
1026 nx = wx + ww - WIDTH(c);
1027 if(abs(wy - ny) < snap)
1029 else if(abs((wy + wh) - (ny + HEIGHT(c))) < snap)
1030 ny = wy + wh - HEIGHT(c);
1031 if(!c->isfloating && lt[sellt]->arrange && (abs(nx - c->x) > snap || abs(ny - c->y) > snap))
1032 togglefloating(NULL);
1034 if(!lt[sellt]->arrange || c->isfloating)
1035 resize(c, nx, ny, c->w, c->h);
1039 while(ev.type != ButtonRelease);
1042 XUngrabPointer(dpy, CurrentTime);
1046 nexttiled(Client *c) {
1047 for(; c && (c->isfloating || !ISVISIBLE(c)); c = c->next);
1052 propertynotify(XEvent *e) {
1055 XPropertyEvent *ev = &e->xproperty;
1057 if((ev->window == root) && (ev->atom == XA_WM_NAME))
1059 else if(ev->state == PropertyDelete)
1060 return; /* ignore */
1061 else if((c = getclient(ev->window))) {
1064 case XA_WM_TRANSIENT_FOR:
1065 XGetTransientForHint(dpy, c->win, &trans);
1066 if(!c->isfloating && (c->isfloating = (getclient(trans) != NULL)))
1069 case XA_WM_NORMAL_HINTS:
1077 if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
1086 quit(const Arg *arg) {
1091 resize(Client *c, int x, int y, int w, int h) {
1094 applysizehints(c, &w, &h);
1095 if(w <= 0 || h <= 0)
1101 if(x + w + 2 * c->bw < sx)
1103 if(y + h + 2 * c->bw < sy)
1109 if(c->x != x || c->y != y || c->w != w || c->h != h) {
1112 c->w = wc.width = w;
1113 c->h = wc.height = h;
1114 wc.border_width = c->bw;
1115 XConfigureWindow(dpy, c->win,
1116 CWX|CWY|CWWidth|CWHeight|CWBorderWidth, &wc);
1123 resizemouse(const Arg *arg) {
1134 if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
1135 None, cursor[CurResize], CurrentTime) != GrabSuccess)
1137 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->bw - 1, c->h + c->bw - 1);
1141 XMaskEvent(dpy, MOUSEMASK|ExposureMask|SubstructureRedirectMask, &ev);
1143 case ConfigureRequest:
1146 handler[ev.type](&ev);
1149 nw = MAX(ev.xmotion.x - ocx - 2 * c->bw + 1, 1);
1150 nh = MAX(ev.xmotion.y - ocy - 2 * c->bw + 1, 1);
1152 if(snap && nw >= wx && nw <= wx + ww
1153 && nh >= wy && nh <= wy + wh) {
1154 if(!c->isfloating && lt[sellt]->arrange
1155 && (abs(nw - c->w) > snap || abs(nh - c->h) > snap))
1156 togglefloating(NULL);
1158 if(!lt[sellt]->arrange || c->isfloating)
1159 resize(c, c->x, c->y, nw, nh);
1163 while(ev.type != ButtonRelease);
1166 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->bw - 1, c->h + c->bw - 1);
1167 XUngrabPointer(dpy, CurrentTime);
1168 while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
1180 if(sel->isfloating || !lt[sellt]->arrange)
1181 XRaiseWindow(dpy, sel->win);
1182 if(lt[sellt]->arrange) {
1183 wc.stack_mode = Below;
1184 wc.sibling = barwin;
1185 for(c = stack; c; c = c->snext)
1186 if(!c->isfloating && ISVISIBLE(c)) {
1187 XConfigureWindow(dpy, c->win, CWSibling|CWStackMode, &wc);
1188 wc.sibling = c->win;
1192 while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
1199 /* main event loop */
1201 while(running && !XNextEvent(dpy, &ev)) {
1202 if(handler[ev.type])
1203 (handler[ev.type])(&ev); /* call handler */
1209 unsigned int i, num;
1210 Window d1, d2, *wins = NULL;
1211 XWindowAttributes wa;
1213 if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
1214 for(i = 0; i < num; i++) {
1215 if(!XGetWindowAttributes(dpy, wins[i], &wa)
1216 || wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
1218 if(wa.map_state == IsViewable || getstate(wins[i]) == IconicState)
1219 manage(wins[i], &wa);
1221 for(i = 0; i < num; i++) { /* now the transients */
1222 if(!XGetWindowAttributes(dpy, wins[i], &wa))
1224 if(XGetTransientForHint(dpy, wins[i], &d1)
1225 && (wa.map_state == IsViewable || getstate(wins[i]) == IconicState))
1226 manage(wins[i], &wa);
1234 setclientstate(Client *c, long state) {
1235 long data[] = {state, None};
1237 XChangeProperty(dpy, c->win, wmatom[WMState], wmatom[WMState], 32,
1238 PropModeReplace, (unsigned char *)data, 2);
1242 setlayout(const Arg *arg) {
1243 if(!arg || !arg->v || arg->v != lt[sellt])
1246 lt[sellt] = (Layout *)arg->v;
1253 /* arg > 1.0 will set mfact absolutly */
1255 setmfact(const Arg *arg) {
1258 if(!arg || !lt[sellt]->arrange)
1260 f = arg->f < 1.0 ? arg->f + mfact : arg->f - 1.0;
1261 if(f < 0.1 || f > 0.9)
1271 XSetWindowAttributes wa;
1274 screen = DefaultScreen(dpy);
1275 root = RootWindow(dpy, screen);
1279 sw = DisplayWidth(dpy, screen);
1280 sh = DisplayHeight(dpy, screen);
1281 bh = dc.h = dc.font.height + 2;
1282 lt[0] = &layouts[0];
1283 lt[1] = &layouts[1 % LENGTH(layouts)];
1287 wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
1288 wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
1289 wmatom[WMState] = XInternAtom(dpy, "WM_STATE", False);
1290 netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
1291 netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
1294 wa.cursor = cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
1295 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
1296 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
1298 /* init appearance */
1299 dc.norm[ColBorder] = getcolor(normbordercolor);
1300 dc.norm[ColBG] = getcolor(normbgcolor);
1301 dc.norm[ColFG] = getcolor(normfgcolor);
1302 dc.sel[ColBorder] = getcolor(selbordercolor);
1303 dc.sel[ColBG] = getcolor(selbgcolor);
1304 dc.sel[ColFG] = getcolor(selfgcolor);
1305 dc.drawable = XCreatePixmap(dpy, root, DisplayWidth(dpy, screen), bh, DefaultDepth(dpy, screen));
1306 dc.gc = XCreateGC(dpy, root, 0, NULL);
1307 XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
1309 XSetFont(dpy, dc.gc, dc.font.xfont->fid);
1312 for(blw = i = 0; LENGTH(layouts) > 1 && i < LENGTH(layouts); i++) {
1313 w = TEXTW(layouts[i].symbol);
1317 wa.override_redirect = True;
1318 wa.background_pixmap = ParentRelative;
1319 wa.event_mask = ButtonPressMask|ExposureMask;
1321 barwin = XCreateWindow(dpy, root, wx, by, ww, bh, 0, DefaultDepth(dpy, screen),
1322 CopyFromParent, DefaultVisual(dpy, screen),
1323 CWOverrideRedirect|CWBackPixmap|CWEventMask, &wa);
1324 XDefineCursor(dpy, barwin, cursor[CurNormal]);
1325 XMapRaised(dpy, barwin);
1328 /* EWMH support per view */
1329 XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
1330 PropModeReplace, (unsigned char *) netatom, NetLast);
1332 /* select for events */
1333 wa.event_mask = SubstructureRedirectMask|SubstructureNotifyMask|ButtonPressMask
1334 |EnterWindowMask|LeaveWindowMask|StructureNotifyMask
1335 |PropertyChangeMask;
1336 XChangeWindowAttributes(dpy, root, CWEventMask|CWCursor, &wa);
1337 XSelectInput(dpy, root, wa.event_mask);
1343 showhide(Client *c, unsigned int ntiled) {
1346 if(ISVISIBLE(c)) { /* show clients top down */
1347 XMoveWindow(dpy, c->win, c->x, c->y);
1348 if(!lt[sellt]->arrange || c->isfloating)
1349 resize(c, c->x, c->y, c->w, c->h);
1350 showhide(c->snext, ntiled);
1352 else { /* hide clients bottom up */
1353 showhide(c->snext, ntiled);
1354 XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
1360 sigchld(int signal) {
1361 while(0 < waitpid(-1, NULL, WNOHANG));
1365 spawn(const Arg *arg) {
1366 signal(SIGCHLD, sigchld);
1369 close(ConnectionNumber(dpy));
1371 execvp(((char **)arg->v)[0], (char **)arg->v);
1372 fprintf(stderr, "dwm: execvp %s", ((char **)arg->v)[0]);
1379 tag(const Arg *arg) {
1380 if(sel && arg->ui & TAGMASK) {
1381 sel->tags = arg->ui & TAGMASK;
1387 textnw(const char *text, unsigned int len) {
1391 XmbTextExtents(dc.font.set, text, len, NULL, &r);
1394 return XTextWidth(dc.font.xfont, text, len);
1403 for(n = 0, c = nexttiled(clients); c; c = nexttiled(c->next), n++);
1408 c = nexttiled(clients);
1410 resize(c, wx, wy, (n == 1 ? ww : mw) - 2 * c->bw, wh - 2 * c->bw);
1416 x = (wx + mw > c->x + c->w) ? c->x + c->w + 2 * c->bw : wx + mw;
1418 w = (wx + mw > c->x + c->w) ? wx + ww - x : ww - mw;
1423 for(i = 0, c = nexttiled(c->next); c; c = nexttiled(c->next), i++) {
1424 resize(c, x, y, w - 2 * c->bw, /* remainder */ ((i + 1 == n)
1425 ? wy + wh - y - 2 * c->bw : h - 2 * c->bw));
1427 y = c->y + HEIGHT(c);
1432 togglebar(const Arg *arg) {
1440 togglefloating(const Arg *arg) {
1443 sel->isfloating = !sel->isfloating || sel->isfixed;
1445 resize(sel, sel->x, sel->y, sel->w, sel->h);
1450 toggletag(const Arg *arg) {
1456 mask = sel->tags ^ (arg->ui & TAGMASK);
1464 toggleview(const Arg *arg) {
1465 unsigned int mask = tagset[seltags] ^ (arg->ui & TAGMASK);
1468 tagset[seltags] = mask;
1474 unmanage(Client *c) {
1477 wc.border_width = c->oldbw;
1478 /* The server grab construct avoids race conditions. */
1480 XSetErrorHandler(xerrordummy);
1481 XConfigureWindow(dpy, c->win, CWBorderWidth, &wc); /* restore border */
1486 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
1487 setclientstate(c, WithdrawnState);
1490 XSetErrorHandler(xerror);
1496 unmapnotify(XEvent *e) {
1498 XUnmapEvent *ev = &e->xunmap;
1500 if((c = getclient(ev->window)))
1506 if(dc.drawable != 0)
1507 XFreePixmap(dpy, dc.drawable);
1508 dc.drawable = XCreatePixmap(dpy, root, ww, bh, DefaultDepth(dpy, screen));
1509 XMoveResizeWindow(dpy, barwin, wx, by, ww, bh);
1516 XineramaScreenInfo *info = NULL;
1518 /* window area geometry */
1519 if(XineramaIsActive(dpy) && (info = XineramaQueryScreens(dpy, &n))) {
1524 if(XQueryPointer(dpy, root, &dummy, &dummy, &x, &y, &di, &di, &dui))
1525 for(i = 0; i < n; i++)
1526 if(INRECT(x, y, info[i].x_org, info[i].y_org, info[i].width, info[i].height))
1530 wy = showbar && topbar ? info[i].y_org + bh : info[i].y_org;
1532 wh = showbar ? info[i].height - bh : info[i].height;
1539 wy = showbar && topbar ? sy + bh : sy;
1541 wh = showbar ? sh - bh : sh;
1545 by = showbar ? (topbar ? wy - bh : wy + wh) : -bh;
1549 updatenumlockmask(void) {
1551 XModifierKeymap *modmap;
1554 modmap = XGetModifierMapping(dpy);
1555 for(i = 0; i < 8; i++)
1556 for(j = 0; j < modmap->max_keypermod; j++)
1557 if(modmap->modifiermap[i * modmap->max_keypermod + j] == XKeysymToKeycode(dpy, XK_Num_Lock))
1558 numlockmask = (1 << i);
1559 XFreeModifiermap(modmap);
1563 updatesizehints(Client *c) {
1567 if(!XGetWMNormalHints(dpy, c->win, &size, &msize))
1568 /* size is uninitialized, ensure that size.flags aren't used */
1570 if(size.flags & PBaseSize) {
1571 c->basew = size.base_width;
1572 c->baseh = size.base_height;
1574 else if(size.flags & PMinSize) {
1575 c->basew = size.min_width;
1576 c->baseh = size.min_height;
1579 c->basew = c->baseh = 0;
1580 if(size.flags & PResizeInc) {
1581 c->incw = size.width_inc;
1582 c->inch = size.height_inc;
1585 c->incw = c->inch = 0;
1586 if(size.flags & PMaxSize) {
1587 c->maxw = size.max_width;
1588 c->maxh = size.max_height;
1591 c->maxw = c->maxh = 0;
1592 if(size.flags & PMinSize) {
1593 c->minw = size.min_width;
1594 c->minh = size.min_height;
1596 else if(size.flags & PBaseSize) {
1597 c->minw = size.base_width;
1598 c->minh = size.base_height;
1601 c->minw = c->minh = 0;
1602 if(size.flags & PAspect) {
1603 c->mina = (float)size.min_aspect.y / (float)size.min_aspect.x;
1604 c->maxa = (float)size.max_aspect.x / (float)size.max_aspect.y;
1607 c->maxa = c->mina = 0.0;
1608 c->isfixed = (c->maxw && c->minw && c->maxh && c->minh
1609 && c->maxw == c->minw && c->maxh == c->minh);
1613 updatetitle(Client *c) {
1614 if(!gettextprop(c->win, netatom[NetWMName], c->name, sizeof c->name))
1615 gettextprop(c->win, XA_WM_NAME, c->name, sizeof c->name);
1620 if(!gettextprop(root, XA_WM_NAME, stext, sizeof(stext)))
1621 strcpy(stext, "dwm-"VERSION);
1626 updatewmhints(Client *c) {
1629 if((wmh = XGetWMHints(dpy, c->win))) {
1630 if(c == sel && wmh->flags & XUrgencyHint) {
1631 wmh->flags &= ~XUrgencyHint;
1632 XSetWMHints(dpy, c->win, wmh);
1635 c->isurgent = (wmh->flags & XUrgencyHint) ? True : False;
1642 view(const Arg *arg) {
1643 if((arg->ui & TAGMASK) == tagset[seltags])
1645 seltags ^= 1; /* toggle sel tagset */
1646 if(arg->ui & TAGMASK)
1647 tagset[seltags] = arg->ui & TAGMASK;
1651 /* There's no way to check accesses to destroyed windows, thus those cases are
1652 * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
1653 * default error handler, which may call exit. */
1655 xerror(Display *dpy, XErrorEvent *ee) {
1656 if(ee->error_code == BadWindow
1657 || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
1658 || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
1659 || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
1660 || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
1661 || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
1662 || (ee->request_code == X_GrabButton && ee->error_code == BadAccess)
1663 || (ee->request_code == X_GrabKey && ee->error_code == BadAccess)
1664 || (ee->request_code == X_CopyArea && ee->error_code == BadDrawable))
1666 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
1667 ee->request_code, ee->error_code);
1668 return xerrorxlib(dpy, ee); /* may call exit */
1672 xerrordummy(Display *dpy, XErrorEvent *ee) {
1676 /* Startup Error handler to check if another window manager
1677 * is already running. */
1679 xerrorstart(Display *dpy, XErrorEvent *ee) {
1685 zoom(const Arg *arg) {
1688 if(!lt[sellt]->arrange || lt[sellt]->arrange == monocle || (sel && sel->isfloating))
1690 if(c == nexttiled(clients))
1691 if(!c || !(c = nexttiled(c->next)))
1700 main(int argc, char *argv[]) {
1701 if(argc == 2 && !strcmp("-v", argv[1]))
1702 die("dwm-"VERSION", © 2006-2009 dwm engineers, see LICENSE for details\n");
1704 die("usage: dwm [-v]\n");
1706 if(!setlocale(LC_CTYPE, "") || !XSupportsLocale())
1707 fputs("warning: no locale support\n", stderr);
1709 if(!(dpy = XOpenDisplay(NULL)))
1710 die("dwm: cannot open display\n");