2 * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
3 * See LICENSE file for license details.
10 #include <X11/cursorfont.h>
11 #include <X11/Xatom.h>
12 #include <X11/Xproto.h>
16 /********** CUSTOMIZE **********/
19 [Tscratch] = "scratch",
26 /********** CUSTOMIZE **********/
31 Atom wm_atom[WMLast], net_atom[NetLast];
32 Cursor cursor[CurLast];
37 int tsel = Tdev; /* default tag */
38 int screen, sx, sy, sw, sh, th;
41 Client *clients = NULL;
44 static Bool other_wm_running;
45 static const char version[] =
46 "dwm - " VERSION ", (C)opyright MMVI Anselm R. Garbe\n";
47 static int (*x_error_handler) (Display *, XErrorEvent *);
50 usage() { error("usage: dwm [-v]\n"); }
60 if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
61 for(i = 0; i < num; i++) {
62 if(!XGetWindowAttributes(dpy, wins[i], &wa))
64 if(wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
66 if(wa.map_state == IsViewable)
75 win_property(Window w, Atom a, Atom t, long l, unsigned char **prop)
79 unsigned long res, extra;
82 status = XGetWindowProperty(dpy, w, a, 0L, l, False, t, &real, &format,
85 if(status != Success || *prop == 0) {
97 unsigned char *protocols;
102 res = win_property(w, wm_atom[WMProtocols], XA_ATOM, 20L, &protocols);
106 for(i = 0; i < res; i++) {
107 if(protocols[i] == wm_atom[WMDelete])
108 protos |= WM_PROTOCOL_DELWIN;
110 free((char *) protocols);
115 send_message(Window w, Atom a, long value)
119 e.type = ClientMessage;
120 e.xclient.window = w;
121 e.xclient.message_type = a;
122 e.xclient.format = 32;
123 e.xclient.data.l[0] = value;
124 e.xclient.data.l[1] = CurrentTime;
125 XSendEvent(dpy, w, False, NoEventMask, &e);
130 * There's no way to check accesses to destroyed windows, thus
131 * those cases are ignored (especially on UnmapNotify's).
132 * Other types of errors call Xlib's default error handler, which
136 error_handler(Display *dpy, XErrorEvent *error)
138 if(error->error_code == BadWindow
139 || (error->request_code == X_SetInputFocus
140 && error->error_code == BadMatch)
141 || (error->request_code == X_PolyText8
142 && error->error_code == BadDrawable)
143 || (error->request_code == X_PolyFillRectangle
144 && error->error_code == BadDrawable)
145 || (error->request_code == X_PolySegment
146 && error->error_code == BadDrawable)
147 || (error->request_code == X_ConfigureWindow
148 && error->error_code == BadMatch)
149 || (error->request_code == X_GrabKey
150 && error->error_code == BadAccess))
152 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
153 error->request_code, error->error_code);
154 return x_error_handler(dpy, error); /* may call exit() */
158 * Startup Error handler to check if another window manager
159 * is already running.
162 startup_error_handler(Display *dpy, XErrorEvent *error)
164 other_wm_running = True;
173 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
183 main(int argc, char *argv[])
186 XSetWindowAttributes wa;
191 /* command line args */
192 for(i = 1; (i < argc) && (argv[i][0] == '-'); i++) {
193 switch (argv[i][1]) {
195 fprintf(stdout, "%s", version);
204 dpy = XOpenDisplay(0);
206 error("dwm: cannot connect X server\n");
208 screen = DefaultScreen(dpy);
209 root = RootWindow(dpy, screen);
211 /* check if another WM is already running */
212 other_wm_running = False;
213 XSetErrorHandler(startup_error_handler);
214 /* this causes an error if some other WM is running */
215 XSelectInput(dpy, root, SubstructureRedirectMask);
219 error("dwm: another window manager is already running\n");
222 sw = DisplayWidth(dpy, screen);
223 sh = DisplayHeight(dpy, screen);
224 issel = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask);
227 x_error_handler = XSetErrorHandler(error_handler);
230 wm_atom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
231 wm_atom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
232 net_atom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
233 net_atom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
235 XChangeProperty(dpy, root, net_atom[NetSupported], XA_ATOM, 32,
236 PropModeReplace, (unsigned char *) net_atom, NetLast);
240 cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
241 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
242 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
247 initcolors(BGCOLOR, FGCOLOR, BORDERCOLOR);
248 initfont(&dc.font, FONT);
250 th = texth(&dc.font);
252 dc.drawable = XCreatePixmap(dpy, root, sw, th, DefaultDepth(dpy, screen));
253 dc.gc = XCreateGC(dpy, root, 0, 0);
255 wa.event_mask = SubstructureRedirectMask | EnterWindowMask \
257 wa.cursor = cursor[CurNormal];
258 XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);
263 XNextEvent(dpy, &ev);
265 (handler[ev.type])(&ev); /* call handler */