2 * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
3 * 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>
20 static int (*xerrorxlib)(Display *, XErrorEvent *);
21 static Bool otherwm, readin;
28 resize(sel, True, TopLeft);
32 XFreeFontSet(dpy, dc.font.set);
34 XFreeFont(dpy, dc.font.xfont);
35 XUngrabKey(dpy, AnyKey, AnyModifier, root);
36 XFreePixmap(dpy, dc.drawable);
38 XDestroyWindow(dpy, barwin);
39 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
51 if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
52 for(i = 0; i < num; i++) {
53 if(!XGetWindowAttributes(dpy, wins[i], &wa))
55 if(wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
57 if(wa.map_state == IsViewable)
66 winprop(Window w, Atom a, Atom t, long l, unsigned char **prop)
69 unsigned long res, extra;
72 status = XGetWindowProperty(dpy, w, a, 0L, l, False, t, &real, &format,
75 if(status != Success || *prop == 0) {
85 * Startup Error handler to check if another window manager
89 xerrorstart(Display *dsply, XErrorEvent *ee)
99 int screen, sx, sy, sw, sh, bx, by, bw, bh, mw;
100 unsigned int ntags, numlockmask;
101 Atom wmatom[WMLast], netatom[NetLast];
104 Client *clients = NULL;
106 Cursor cursor[CurLast];
119 res = winprop(w, wmatom[WMProtocols], XA_ATOM, 20L,
120 ((unsigned char **)&protocols));
124 for(i = 0; i < res; i++) {
125 if(protocols[i] == wmatom[WMDelete])
126 protos |= PROTODELWIN;
128 free((char *) protocols);
133 sendevent(Window w, Atom a, long value)
137 e.type = ClientMessage;
138 e.xclient.window = w;
139 e.xclient.message_type = a;
140 e.xclient.format = 32;
141 e.xclient.data.l[0] = value;
142 e.xclient.data.l[1] = CurrentTime;
143 XSendEvent(dpy, w, False, NoEventMask, &e);
150 readin = running = False;
154 * There's no way to check accesses to destroyed windows, thus those cases are
155 * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
156 * default error handler, which calls exit().
159 xerror(Display *dpy, XErrorEvent *ee)
161 if(ee->error_code == BadWindow
162 || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
163 || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
164 || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
165 || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
166 || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
167 || (ee->request_code == X_GrabKey && ee->error_code == BadAccess))
169 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
170 ee->request_code, ee->error_code);
171 return xerrorxlib(dpy, ee); /* may call exit() */
175 main(int argc, char *argv[])
181 XModifierKeymap *modmap;
182 XSetWindowAttributes wa;
184 if(argc == 2 && !strncmp("-v", argv[1], 3)) {
185 fputs("dwm-"VERSION", (C)opyright MMVI Anselm R. Garbe\n", stdout);
189 eprint("usage: dwm [-v]\n");
191 dpy = XOpenDisplay(0);
193 eprint("dwm: cannot open display\n");
195 xfd = ConnectionNumber(dpy);
196 screen = DefaultScreen(dpy);
197 root = RootWindow(dpy, screen);
200 XSetErrorHandler(xerrorstart);
201 /* this causes an error if some other window manager is running */
202 XSelectInput(dpy, root, SubstructureRedirectMask);
206 eprint("dwm: another window manager is already running\n");
209 XSetErrorHandler(NULL);
210 xerrorxlib = XSetErrorHandler(xerror);
214 wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
215 wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
216 netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
217 netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
218 XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
219 PropModeReplace, (unsigned char *) netatom, NetLast);
222 cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
223 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
224 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
226 modmap = XGetModifierMapping(dpy);
227 for (i = 0; i < 8; i++) {
228 for (j = 0; j < modmap->max_keypermod; j++) {
229 if(modmap->modifiermap[i * modmap->max_keypermod + j] == XKeysymToKeycode(dpy, XK_Num_Lock))
230 numlockmask = (1 << i);
235 wa.event_mask = SubstructureRedirectMask | SubstructureNotifyMask | EnterWindowMask | LeaveWindowMask;
236 wa.cursor = cursor[CurNormal];
237 XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);
242 for(ntags = 0; tags[ntags]; ntags++);
243 seltag = emallocz(sizeof(Bool) * ntags);
247 dc.bg = getcolor(BGCOLOR);
248 dc.fg = getcolor(FGCOLOR);
249 dc.border = getcolor(BORDERCOLOR);
253 sw = DisplayWidth(dpy, screen);
254 sh = DisplayHeight(dpy, screen);
255 mw = (sw * MASTERW) / 100;
259 dc.h = bh = dc.font.height + 4;
260 wa.override_redirect = 1;
261 wa.background_pixmap = ParentRelative;
262 wa.event_mask = ButtonPressMask | ExposureMask;
263 barwin = XCreateWindow(dpy, root, bx, by, bw, bh, 0, DefaultDepth(dpy, screen),
264 CopyFromParent, DefaultVisual(dpy, screen),
265 CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
266 XDefineCursor(dpy, barwin, cursor[CurNormal]);
267 XMapRaised(dpy, barwin);
269 dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
270 dc.gc = XCreateGC(dpy, root, 0, 0);
272 strcpy(stext, "dwm-"VERSION);
275 issel = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask);
279 /* main event loop, also reads status text from stdin */
286 FD_SET(STDIN_FILENO, &rd);
288 i = select(xfd + 1, &rd, NULL, NULL, NULL);
289 if((i == -1) && (errno == EINTR))
292 if(readin && FD_ISSET(STDIN_FILENO, &rd)) {
293 readin = NULL != fgets(stext, sizeof(stext), stdin);
295 stext[strlen(stext) - 1] = 0;
297 strcpy(stext, "broken pipe");
302 eprint("select failed\n");