1 /* (C)opyright MMVI-MMVII Anselm R. Garbe <garbeam at gmail dot com>
2 * See LICENSE file for license details.
12 #include <sys/select.h>
13 #include <X11/cursorfont.h>
14 #include <X11/keysym.h>
15 #include <X11/Xatom.h>
16 #include <X11/Xproto.h>
21 int screen, sx, sy, sw, sh, wax, way, waw, wah;
22 unsigned int bh, ntags, numlockmask;
23 Atom wmatom[WMLast], netatom[NetLast];
26 Bool selscreen = True;
27 Client *clients = NULL;
30 Cursor cursor[CurLast];
37 static int (*xerrorxlib)(Display *, XErrorEvent *);
38 static Bool otherwm, readin;
45 XMoveWindow(dpy, stack->win, stack->x, stack->y);
49 XFreeFontSet(dpy, dc.font.set);
51 XFreeFont(dpy, dc.font.xfont);
52 XUngrabKey(dpy, AnyKey, AnyModifier, root);
53 XFreePixmap(dpy, dc.drawable);
55 XDestroyWindow(dpy, barwin);
56 XFreeCursor(dpy, cursor[CurNormal]);
57 XFreeCursor(dpy, cursor[CurResize]);
58 XFreeCursor(dpy, cursor[CurMove]);
59 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
65 textnw(const char *text, unsigned int len) {
69 XmbTextExtents(dc.font.set, text, len, NULL, &r);
72 return XTextWidth(dc.font.xfont, text, len);
76 drawsquare(Bool filled, Bool empty, unsigned long col[ColLast]) {
79 XRectangle r = { dc.x, dc.y, dc.w, dc.h };
81 gcv.foreground = col[ColFG];
82 XChangeGC(dpy, dc.gc, GCForeground, &gcv);
83 x = (dc.font.ascent + dc.font.descent + 2) / 4;
87 r.width = r.height = x + 1;
88 XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
91 r.width = r.height = x;
92 XDrawRectangles(dpy, dc.drawable, dc.gc, &r, 1);
97 getcolor(const char *colstr) {
98 Colormap cmap = DefaultColormap(dpy, screen);
101 if(!XAllocNamedColor(dpy, cmap, colstr, &color, &color))
102 eprint("error, cannot allocate color '%s'\n", colstr);
107 isoccupied(unsigned int t) {
110 for(c = clients; c; c = c->next)
119 Window *wins, d1, d2;
120 XWindowAttributes wa;
123 if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
124 for(i = 0; i < num; i++) {
125 if(!XGetWindowAttributes(dpy, wins[i], &wa)
126 || wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
128 if(wa.map_state == IsViewable)
129 manage(wins[i], &wa);
137 setfont(const char *fontstr) {
138 char *def, **missing;
143 XFreeFontSet(dpy, dc.font.set);
144 dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
147 fprintf(stderr, "missing fontset: %s\n", missing[n]);
148 XFreeStringList(missing);
151 XFontSetExtents *font_extents;
152 XFontStruct **xfonts;
154 dc.font.ascent = dc.font.descent = 0;
155 font_extents = XExtentsOfFontSet(dc.font.set);
156 n = XFontsOfFontSet(dc.font.set, &xfonts, &font_names);
157 for(i = 0, dc.font.ascent = 0, dc.font.descent = 0; i < n; i++) {
158 if(dc.font.ascent < (*xfonts)->ascent)
159 dc.font.ascent = (*xfonts)->ascent;
160 if(dc.font.descent < (*xfonts)->descent)
161 dc.font.descent = (*xfonts)->descent;
167 XFreeFont(dpy, dc.font.xfont);
168 dc.font.xfont = NULL;
169 if(!(dc.font.xfont = XLoadQueryFont(dpy, fontstr)))
170 eprint("error, cannot load font: '%s'\n", fontstr);
171 dc.font.ascent = dc.font.xfont->ascent;
172 dc.font.descent = dc.font.xfont->descent;
174 dc.font.height = dc.font.ascent + dc.font.descent;
182 XModifierKeymap *modmap;
183 XSetWindowAttributes wa;
186 wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
187 wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
188 wmatom[WMState] = XInternAtom(dpy, "WM_STATE", False);
189 netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
190 netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
191 XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
192 PropModeReplace, (unsigned char *) netatom, NetLast);
194 cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
195 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
196 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
197 /* init modifier map */
199 modmap = XGetModifierMapping(dpy);
200 for (i = 0; i < 8; i++)
201 for (j = 0; j < modmap->max_keypermod; j++) {
202 if(modmap->modifiermap[i * modmap->max_keypermod + j]
203 == XKeysymToKeycode(dpy, XK_Num_Lock))
204 numlockmask = (1 << i);
206 XFreeModifiermap(modmap);
207 /* select for events */
208 wa.event_mask = SubstructureRedirectMask | SubstructureNotifyMask
209 | EnterWindowMask | LeaveWindowMask;
210 wa.cursor = cursor[CurNormal];
211 XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);
214 for(ntags = 0; tags[ntags]; ntags++);
215 seltag = emallocz(sizeof(Bool) * ntags);
218 dc.norm[ColBorder] = getcolor(NORMBORDERCOLOR);
219 dc.norm[ColBG] = getcolor(NORMBGCOLOR);
220 dc.norm[ColFG] = getcolor(NORMFGCOLOR);
221 dc.sel[ColBorder] = getcolor(SELBORDERCOLOR);
222 dc.sel[ColBG] = getcolor(SELBGCOLOR);
223 dc.sel[ColFG] = getcolor(SELFGCOLOR);
227 sw = DisplayWidth(dpy, screen);
228 sh = DisplayHeight(dpy, screen);
231 dc.h = bh = dc.font.height + 2;
232 wa.override_redirect = 1;
233 wa.background_pixmap = ParentRelative;
234 wa.event_mask = ButtonPressMask | ExposureMask;
235 barwin = XCreateWindow(dpy, root, sx, sy + (TOPBAR ? 0 : sh - bh), sw, bh, 0,
236 DefaultDepth(dpy, screen), CopyFromParent, DefaultVisual(dpy, screen),
237 CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
238 XDefineCursor(dpy, barwin, cursor[CurNormal]);
239 XMapRaised(dpy, barwin);
240 strcpy(stext, "dwm-"VERSION);
243 way = sy + (TOPBAR ? bh : 0);
246 /* pixmap for everything */
247 dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
248 dc.gc = XCreateGC(dpy, root, 0, 0);
249 XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
250 /* multihead support */
251 selscreen = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask);
255 * Startup Error handler to check if another window manager
256 * is already running.
259 xerrorstart(Display *dsply, XErrorEvent *ee) {
271 for(i = 0; i < ntags; i++) {
272 dc.w = textw(tags[i]);
274 drawtext(tags[i], dc.sel);
275 drawsquare(sel && sel->tags[i], isoccupied(i), dc.sel);
278 drawtext(tags[i], dc.norm);
279 drawsquare(sel && sel->tags[i], isoccupied(i), dc.norm);
284 drawtext(lt->symbol, dc.norm);
292 drawtext(stext, dc.norm);
293 if((dc.w = dc.x - x) > bh) {
295 drawtext(sel ? sel->name : NULL, sel ? dc.sel : dc.norm);
297 XCopyArea(dpy, dc.drawable, barwin, dc.gc, 0, 0, sw, bh, 0, 0);
302 drawtext(const char *text, unsigned long col[ColLast]) {
304 static char buf[256];
305 unsigned int len, olen;
307 XRectangle r = { dc.x, dc.y, dc.w, dc.h };
309 XSetForeground(dpy, dc.gc, col[ColBG]);
310 XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
314 olen = len = strlen(text);
315 if(len >= sizeof buf)
316 len = sizeof buf - 1;
317 memcpy(buf, text, len);
319 h = dc.font.ascent + dc.font.descent;
320 y = dc.y + (dc.h / 2) - (h / 2) + dc.font.ascent;
322 /* shorten text if necessary */
323 while(len && (w = textnw(buf, len)) > dc.w - h)
334 return; /* too long */
335 gcv.foreground = col[ColFG];
337 XChangeGC(dpy, dc.gc, GCForeground, &gcv);
338 XmbDrawString(dpy, dc.drawable, dc.font.set, dc.gc, x, y, buf, len);
341 gcv.font = dc.font.xfont->fid;
342 XChangeGC(dpy, dc.gc, GCForeground | GCFont, &gcv);
343 XDrawString(dpy, dc.drawable, dc.gc, x, y, buf, len);
348 sendevent(Window w, Atom a, long value) {
351 e.type = ClientMessage;
352 e.xclient.window = w;
353 e.xclient.message_type = a;
354 e.xclient.format = 32;
355 e.xclient.data.l[0] = value;
356 e.xclient.data.l[1] = CurrentTime;
357 XSendEvent(dpy, w, False, NoEventMask, &e);
362 textw(const char *text) {
363 return textnw(text, strlen(text)) + dc.font.height;
368 readin = running = False;
371 /* There's no way to check accesses to destroyed windows, thus those cases are
372 * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
373 * default error handler, which may call exit.
376 xerror(Display *dpy, XErrorEvent *ee) {
377 if(ee->error_code == BadWindow
378 || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
379 || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
380 || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
381 || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
382 || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
383 || (ee->request_code == X_GrabKey && ee->error_code == BadAccess)
384 || (ee->request_code == X_CopyArea && ee->error_code == BadDrawable))
386 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
387 ee->request_code, ee->error_code);
388 return xerrorxlib(dpy, ee); /* may call exit */
392 main(int argc, char *argv[]) {
398 if(argc == 2 && !strncmp("-v", argv[1], 3))
399 eprint("dwm-"VERSION", (C)opyright MMVI-MMVII Anselm R. Garbe\n");
401 eprint("usage: dwm [-v]\n");
402 setlocale(LC_CTYPE, "");
403 if(!(dpy = XOpenDisplay(0)))
404 eprint("dwm: cannot open display\n");
405 xfd = ConnectionNumber(dpy);
406 screen = DefaultScreen(dpy);
407 root = RootWindow(dpy, screen);
409 XSetErrorHandler(xerrorstart);
410 /* this causes an error if some other window manager is running */
411 XSelectInput(dpy, root, SubstructureRedirectMask);
414 eprint("dwm: another window manager is already running\n");
417 XSetErrorHandler(NULL);
418 xerrorxlib = XSetErrorHandler(xerror);
424 /* main event loop, also reads status text from stdin */
430 FD_SET(STDIN_FILENO, &rd);
432 if(select(xfd + 1, &rd, NULL, NULL, NULL) == -1) {
435 eprint("select failed\n");
437 if(FD_ISSET(STDIN_FILENO, &rd)) {
438 switch(r = read(STDIN_FILENO, stext, sizeof stext - 1)) {
440 strncpy(stext, strerror(errno), sizeof stext - 1);
441 stext[sizeof stext - 1] = '\0';
445 strncpy(stext, "EOF", 4);
449 for(stext[r] = '\0', p = stext + strlen(stext) - 1; p >= stext && *p == '\n'; *p-- = '\0');
450 for(; p >= stext && *p != '\n'; --p);
452 strncpy(stext, p + 1, sizeof stext);
456 if(FD_ISSET(xfd, &rd))
457 while(XPending(dpy)) {
458 XNextEvent(dpy, &ev);
460 (handler[ev.type])(&ev); /* call handler */