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 *);
27 resize(sel, True, TopLeft);
31 XFreeFontSet(dpy, dc.font.set);
33 XFreeFont(dpy, dc.font.xfont);
34 XUngrabKey(dpy, AnyKey, AnyModifier, root);
35 XDestroyWindow(dpy, barwin);
36 XFreePixmap(dpy, dc.drawable);
38 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
50 if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
51 for(i = 0; i < num; i++) {
52 if(!XGetWindowAttributes(dpy, wins[i], &wa))
54 if(wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
56 if(wa.map_state == IsViewable)
65 win_property(Window w, Atom a, Atom t, long l, unsigned char **prop)
68 unsigned long res, extra;
71 status = XGetWindowProperty(dpy, w, a, 0L, l, False, t, &real, &format,
74 if(status != Success || *prop == 0) {
84 * Startup Error handler to check if another window manager
88 xerrorstart(Display *dsply, XErrorEvent *ee)
98 int screen, sx, sy, sw, sh, bx, by, bw, bh, mw;
99 unsigned int ntags, numlockmask;
100 Atom wmatom[WMLast], netatom[NetLast];
103 Client *clients = NULL;
105 Cursor cursor[CurLast];
118 res = win_property(w, wmatom[WMProtocols], XA_ATOM, 20L,
119 ((unsigned char **)&protocols));
123 for(i = 0; i < res; i++) {
124 if(protocols[i] == wmatom[WMDelete])
125 protos |= PROTODELWIN;
127 free((char *) protocols);
132 sendevent(Window w, Atom a, long value)
136 e.type = ClientMessage;
137 e.xclient.window = w;
138 e.xclient.message_type = a;
139 e.xclient.format = 32;
140 e.xclient.data.l[0] = value;
141 e.xclient.data.l[1] = CurrentTime;
142 XSendEvent(dpy, w, False, NoEventMask, &e);
153 * There's no way to check accesses to destroyed windows, thus those cases are
154 * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
155 * default error handler, which calls exit().
158 xerror(Display *dpy, XErrorEvent *ee)
160 if(ee->error_code == BadWindow
161 || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
162 || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
163 || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
164 || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
165 || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
166 || (ee->request_code == X_GrabKey && ee->error_code == BadAccess))
168 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
169 ee->request_code, ee->error_code);
170 return xerrorxlib(dpy, ee); /* may call exit() */
174 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);
244 seltag[DEFTAG] = True;
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 */
285 FD_SET(STDIN_FILENO, &rd);
287 i = select(xfd + 1, &rd, NULL, NULL, NULL);
288 if(i == -1 && errno == EINTR)
291 eprint("select failed\n");
293 if(readin && FD_ISSET(STDIN_FILENO, &rd)) {
294 readin = NULL != fgets(stext, sizeof(stext), stdin);
296 stext[strlen(stext) - 1] = 0;
298 strcpy(stext, "broken pipe");