1 /* See LICENSE file for copyright and license details. */
9 #include <sys/select.h>
10 #include <X11/cursorfont.h>
11 #include <X11/keysym.h>
12 #include <X11/Xatom.h>
13 #include <X11/Xproto.h>
14 #include <X11/Xutil.h>
19 int screen, sx, sy, sw, sh, wax, way, waw, wah;
20 unsigned int bh, ntags;
21 unsigned int bpos = BARPOS;
22 unsigned int numlockmask = 0;
23 Atom wmatom[WMLast], netatom[NetLast];
25 Bool selscreen = True;
26 Client *clients = NULL;
29 Cursor cursor[CurLast];
36 static int (*xerrorxlib)(Display *, XErrorEvent *);
37 static Bool otherwm, readin;
38 static Bool running = True;
48 XFreeFontSet(dpy, dc.font.set);
50 XFreeFont(dpy, dc.font.xfont);
51 XUngrabKey(dpy, AnyKey, AnyModifier, root);
52 XFreePixmap(dpy, dc.drawable);
54 XDestroyWindow(dpy, barwin);
55 XFreeCursor(dpy, cursor[CurNormal]);
56 XFreeCursor(dpy, cursor[CurResize]);
57 XFreeCursor(dpy, cursor[CurMove]);
58 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
64 initcolor(const char *colstr) {
65 Colormap cmap = DefaultColormap(dpy, screen);
68 if(!XAllocNamedColor(dpy, cmap, colstr, &color, &color))
69 eprint("error, cannot allocate color '%s'\n", colstr);
74 initfont(const char *fontstr) {
80 XFreeFontSet(dpy, dc.font.set);
81 dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
84 fprintf(stderr, "dwm: missing fontset: %s\n", missing[n]);
85 XFreeStringList(missing);
88 XFontSetExtents *font_extents;
91 dc.font.ascent = dc.font.descent = 0;
92 font_extents = XExtentsOfFontSet(dc.font.set);
93 n = XFontsOfFontSet(dc.font.set, &xfonts, &font_names);
94 for(i = 0, dc.font.ascent = 0, dc.font.descent = 0; i < n; i++) {
95 if(dc.font.ascent < (*xfonts)->ascent)
96 dc.font.ascent = (*xfonts)->ascent;
97 if(dc.font.descent < (*xfonts)->descent)
98 dc.font.descent = (*xfonts)->descent;
104 XFreeFont(dpy, dc.font.xfont);
105 dc.font.xfont = NULL;
106 if(!(dc.font.xfont = XLoadQueryFont(dpy, fontstr)))
107 eprint("error, cannot load font: '%s'\n", fontstr);
108 dc.font.ascent = dc.font.xfont->ascent;
109 dc.font.descent = dc.font.xfont->descent;
111 dc.font.height = dc.font.ascent + dc.font.descent;
118 unsigned char *p = NULL;
119 unsigned long n, extra;
122 status = XGetWindowProperty(dpy, w, wmatom[WMState], 0L, 2L, False, wmatom[WMState],
123 &real, &format, &n, &extra, (unsigned char **)&p);
124 if(status != Success)
135 Window *wins, d1, d2;
136 XWindowAttributes wa;
139 if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
140 for(i = 0; i < num; i++) {
141 if(!XGetWindowAttributes(dpy, wins[i], &wa)
142 || wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
144 if(wa.map_state == IsViewable || getstate(wins[i]) == IconicState)
145 manage(wins[i], &wa);
147 for(i = 0; i < num; i++) { /* now the transients */
148 if(!XGetWindowAttributes(dpy, wins[i], &wa))
150 if(XGetTransientForHint(dpy, wins[i], &d1)
151 && (wa.map_state == IsViewable || getstate(wins[i]) == IconicState))
152 manage(wins[i], &wa);
164 XModifierKeymap *modmap;
165 XSetWindowAttributes wa;
168 wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
169 wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
170 wmatom[WMName] = XInternAtom(dpy, "WM_NAME", False);
171 wmatom[WMState] = XInternAtom(dpy, "WM_STATE", False);
172 netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
173 netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
174 XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
175 PropModeReplace, (unsigned char *) netatom, NetLast);
177 cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
178 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
179 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
180 /* init modifier map */
181 modmap = XGetModifierMapping(dpy);
182 for (i = 0; i < 8; i++)
183 for (j = 0; j < modmap->max_keypermod; j++) {
184 if(modmap->modifiermap[i * modmap->max_keypermod + j]
185 == XKeysymToKeycode(dpy, XK_Num_Lock))
186 numlockmask = (1 << i);
188 XFreeModifiermap(modmap);
189 /* select for events */
190 wa.event_mask = SubstructureRedirectMask | SubstructureNotifyMask
191 | EnterWindowMask | LeaveWindowMask | StructureNotifyMask;
192 wa.cursor = cursor[CurNormal];
193 XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);
194 XSelectInput(dpy, root, wa.event_mask);
197 for(ntags = 0; tags[ntags]; ntags++);
198 seltags = emallocz(sizeof(Bool) * ntags);
201 dc.norm[ColBorder] = initcolor(NORMBORDERCOLOR);
202 dc.norm[ColBG] = initcolor(NORMBGCOLOR);
203 dc.norm[ColFG] = initcolor(NORMFGCOLOR);
204 dc.sel[ColBorder] = initcolor(SELBORDERCOLOR);
205 dc.sel[ColBG] = initcolor(SELBGCOLOR);
206 dc.sel[ColFG] = initcolor(SELFGCOLOR);
210 sw = DisplayWidth(dpy, screen);
211 sh = DisplayHeight(dpy, screen);
214 dc.h = bh = dc.font.height + 2;
215 wa.override_redirect = 1;
216 wa.background_pixmap = ParentRelative;
217 wa.event_mask = ButtonPressMask | ExposureMask;
218 barwin = XCreateWindow(dpy, root, sx, sy, sw, bh, 0,
219 DefaultDepth(dpy, screen), CopyFromParent, DefaultVisual(dpy, screen),
220 CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
221 XDefineCursor(dpy, barwin, cursor[CurNormal]);
223 XMapRaised(dpy, barwin);
224 strcpy(stext, "dwm-"VERSION);
225 /* pixmap for everything */
226 dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
227 dc.gc = XCreateGC(dpy, root, 0, 0);
228 XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
230 XSetFont(dpy, dc.gc, dc.font.xfont->fid);
231 /* multihead support */
232 selscreen = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask);
236 * Startup Error handler to check if another window manager
237 * is already running.
240 xerrorstart(Display *dsply, XErrorEvent *ee) {
248 gettextprop(Window w, Atom atom, char *text, unsigned int size) {
253 if(!text || size == 0)
256 XGetTextProperty(dpy, w, &name, atom);
259 if(name.encoding == XA_STRING)
260 strncpy(text, (char *)name.value, size - 1);
262 if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
265 strncpy(text, *list, size - 1);
266 XFreeStringList(list);
269 text[size - 1] = '\0';
275 quit(const char *arg) {
276 readin = running = False;
279 /* There's no way to check accesses to destroyed windows, thus those cases are
280 * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
281 * default error handler, which may call exit.
284 xerror(Display *dpy, XErrorEvent *ee) {
285 if(ee->error_code == BadWindow
286 || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
287 || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
288 || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
289 || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
290 || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
291 || (ee->request_code == X_GrabKey && ee->error_code == BadAccess)
292 || (ee->request_code == X_CopyArea && ee->error_code == BadDrawable))
294 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
295 ee->request_code, ee->error_code);
296 return xerrorxlib(dpy, ee); /* may call exit */
300 main(int argc, char *argv[]) {
306 if(argc == 2 && !strcmp("-v", argv[1]))
307 eprint("dwm-"VERSION", © 2006-2007 A. R. Garbe, S. van Dijk, J. Salmi, P. Hruby, S. Nagy\n");
309 eprint("usage: dwm [-v]\n");
310 setlocale(LC_CTYPE, "");
311 if(!(dpy = XOpenDisplay(0)))
312 eprint("dwm: cannot open display\n");
313 xfd = ConnectionNumber(dpy);
314 screen = DefaultScreen(dpy);
315 root = RootWindow(dpy, screen);
317 XSetErrorHandler(xerrorstart);
318 /* this causes an error if some other window manager is running */
319 XSelectInput(dpy, root, SubstructureRedirectMask);
322 eprint("dwm: another window manager is already running\n");
325 XSetErrorHandler(NULL);
326 xerrorxlib = XSetErrorHandler(xerror);
332 /* main event loop, also reads status text from stdin */
338 FD_SET(STDIN_FILENO, &rd);
340 if(select(xfd + 1, &rd, NULL, NULL, NULL) == -1) {
343 eprint("select failed\n");
345 if(FD_ISSET(STDIN_FILENO, &rd)) {
346 switch(r = read(STDIN_FILENO, stext, sizeof stext - 1)) {
348 strncpy(stext, strerror(errno), sizeof stext - 1);
349 stext[sizeof stext - 1] = '\0';
353 strncpy(stext, "EOF", 4);
357 for(stext[r] = '\0', p = stext + strlen(stext) - 1; p >= stext && *p == '\n'; *p-- = '\0');
358 for(; p >= stext && *p != '\n'; --p);
360 strncpy(stext, p + 1, sizeof stext);
364 while(XPending(dpy)) {
365 XNextEvent(dpy, &ev);
367 (handler[ev.type])(&ev); /* call handler */