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 dwmprops, 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;
45 unmanage(stack, NormalState);
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;
117 Window *wins, d1, d2;
118 XWindowAttributes wa;
121 if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
122 for(i = 0; i < num; i++) {
123 if(!XGetWindowAttributes(dpy, wins[i], &wa)
124 || wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
126 if(wa.map_state == IsViewable)
127 manage(wins[i], &wa);
139 XModifierKeymap *modmap;
140 XSetWindowAttributes wa;
143 dwmprops = XInternAtom(dpy, "_DWM_PROPERTIES", False);
144 wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
145 wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
146 wmatom[WMName] = XInternAtom(dpy, "WM_NAME", False);
147 wmatom[WMState] = XInternAtom(dpy, "WM_STATE", False);
148 netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
149 netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
150 XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
151 PropModeReplace, (unsigned char *) netatom, NetLast);
153 cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
154 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
155 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
156 /* init modifier map */
157 modmap = XGetModifierMapping(dpy);
158 for (i = 0; i < 8; i++)
159 for (j = 0; j < modmap->max_keypermod; j++) {
160 if(modmap->modifiermap[i * modmap->max_keypermod + j]
161 == XKeysymToKeycode(dpy, XK_Num_Lock))
162 numlockmask = (1 << i);
164 XFreeModifiermap(modmap);
165 /* select for events */
166 wa.event_mask = SubstructureRedirectMask | SubstructureNotifyMask
167 | EnterWindowMask | LeaveWindowMask | StructureNotifyMask;
168 wa.cursor = cursor[CurNormal];
169 XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);
170 XSelectInput(dpy, root, wa.event_mask);
173 for(ntags = 0; tags[ntags]; ntags++);
174 seltags = emallocz(sizeof(Bool) * ntags);
177 dc.norm[ColBorder] = initcolor(NORMBORDERCOLOR);
178 dc.norm[ColBG] = initcolor(NORMBGCOLOR);
179 dc.norm[ColFG] = initcolor(NORMFGCOLOR);
180 dc.sel[ColBorder] = initcolor(SELBORDERCOLOR);
181 dc.sel[ColBG] = initcolor(SELBGCOLOR);
182 dc.sel[ColFG] = initcolor(SELFGCOLOR);
186 sw = DisplayWidth(dpy, screen);
187 sh = DisplayHeight(dpy, screen);
190 dc.h = bh = dc.font.height + 2;
191 wa.override_redirect = 1;
192 wa.background_pixmap = ParentRelative;
193 wa.event_mask = ButtonPressMask | ExposureMask;
194 barwin = XCreateWindow(dpy, root, sx, sy, sw, bh, 0,
195 DefaultDepth(dpy, screen), CopyFromParent, DefaultVisual(dpy, screen),
196 CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
197 XDefineCursor(dpy, barwin, cursor[CurNormal]);
199 XMapRaised(dpy, barwin);
200 strcpy(stext, "dwm-"VERSION);
201 /* pixmap for everything */
202 dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
203 dc.gc = XCreateGC(dpy, root, 0, 0);
204 XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
206 XSetFont(dpy, dc.gc, dc.font.xfont->fid);
207 /* multihead support */
208 selscreen = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask);
213 * Startup Error handler to check if another window manager
214 * is already running.
217 xerrorstart(Display *dsply, XErrorEvent *ee) {
225 gettextprop(Window w, Atom atom, char *text, unsigned int size) {
230 if(!text || size == 0)
233 XGetTextProperty(dpy, w, &name, atom);
236 if(name.encoding == XA_STRING)
237 strncpy(text, (char *)name.value, size - 1);
239 if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
242 strncpy(text, *list, size - 1);
243 XFreeStringList(list);
246 text[size - 1] = '\0';
252 quit(const char *arg) {
253 readin = running = False;
256 /* There's no way to check accesses to destroyed windows, thus those cases are
257 * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
258 * default error handler, which may call exit.
261 xerror(Display *dpy, XErrorEvent *ee) {
262 if(ee->error_code == BadWindow
263 || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
264 || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
265 || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
266 || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
267 || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
268 || (ee->request_code == X_GrabKey && ee->error_code == BadAccess)
269 || (ee->request_code == X_CopyArea && ee->error_code == BadDrawable))
271 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
272 ee->request_code, ee->error_code);
273 return xerrorxlib(dpy, ee); /* may call exit */
277 main(int argc, char *argv[]) {
283 if(argc == 2 && !strcmp("-v", argv[1]))
284 eprint("dwm-"VERSION", © 2006-2007 A. R. Garbe, S. van Dijk, J. Salmi, P. Hruby, S. Nagy\n");
286 eprint("usage: dwm [-v]\n");
287 setlocale(LC_CTYPE, "");
288 if(!(dpy = XOpenDisplay(0)))
289 eprint("dwm: cannot open display\n");
290 xfd = ConnectionNumber(dpy);
291 screen = DefaultScreen(dpy);
292 root = RootWindow(dpy, screen);
294 XSetErrorHandler(xerrorstart);
295 /* this causes an error if some other window manager is running */
296 XSelectInput(dpy, root, SubstructureRedirectMask);
299 eprint("dwm: another window manager is already running\n");
302 XSetErrorHandler(NULL);
303 xerrorxlib = XSetErrorHandler(xerror);
309 /* main event loop, also reads status text from stdin */
315 FD_SET(STDIN_FILENO, &rd);
317 if(select(xfd + 1, &rd, NULL, NULL, NULL) == -1) {
320 eprint("select failed\n");
322 if(FD_ISSET(STDIN_FILENO, &rd)) {
323 switch(r = read(STDIN_FILENO, stext, sizeof stext - 1)) {
325 strncpy(stext, strerror(errno), sizeof stext - 1);
326 stext[sizeof stext - 1] = '\0';
330 strncpy(stext, "EOF", 4);
334 for(stext[r] = '\0', p = stext + strlen(stext) - 1; p >= stext && *p == '\n'; *p-- = '\0');
335 for(; p >= stext && *p != '\n'; --p);
337 strncpy(stext, p + 1, sizeof stext);
341 while(XPending(dpy)) {
342 XNextEvent(dpy, &ev);
344 (handler[ev.type])(&ev); /* call handler */