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;
21 unsigned int numlockmask = 0;
22 Atom wmatom[WMLast], netatom[NetLast];
24 Bool selscreen = True;
25 Client *clients = NULL;
28 Cursor cursor[CurLast];
34 static int (*xerrorxlib)(Display *, XErrorEvent *);
35 static Bool otherwm, readin;
36 static Bool running = True;
46 XFreeFontSet(dpy, dc.font.set);
48 XFreeFont(dpy, dc.font.xfont);
49 XUngrabKey(dpy, AnyKey, AnyModifier, root);
50 XFreePixmap(dpy, dc.drawable);
52 XDestroyWindow(dpy, barwin);
53 XFreeCursor(dpy, cursor[CurNormal]);
54 XFreeCursor(dpy, cursor[CurResize]);
55 XFreeCursor(dpy, cursor[CurMove]);
56 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
65 unsigned char *p = NULL;
66 unsigned long n, extra;
69 status = XGetWindowProperty(dpy, w, wmatom[WMState], 0L, 2L, False, wmatom[WMState],
70 &real, &format, &n, &extra, (unsigned char **)&p);
86 if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
87 for(i = 0; i < num; i++) {
88 if(!XGetWindowAttributes(dpy, wins[i], &wa)
89 || wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
91 if(wa.map_state == IsViewable || getstate(wins[i]) == IconicState)
94 for(i = 0; i < num; i++) { /* now the transients */
95 if(!XGetWindowAttributes(dpy, wins[i], &wa))
97 if(XGetTransientForHint(dpy, wins[i], &d1)
98 && (wa.map_state == IsViewable || getstate(wins[i]) == IconicState))
111 XModifierKeymap *modmap;
112 XSetWindowAttributes wa;
115 wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
116 wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
117 wmatom[WMName] = XInternAtom(dpy, "WM_NAME", False);
118 wmatom[WMState] = XInternAtom(dpy, "WM_STATE", False);
119 netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
120 netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
121 XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
122 PropModeReplace, (unsigned char *) netatom, NetLast);
124 cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
125 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
126 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
127 /* init modifier map */
128 modmap = XGetModifierMapping(dpy);
129 for (i = 0; i < 8; i++)
130 for (j = 0; j < modmap->max_keypermod; j++) {
131 if(modmap->modifiermap[i * modmap->max_keypermod + j]
132 == XKeysymToKeycode(dpy, XK_Num_Lock))
133 numlockmask = (1 << i);
135 XFreeModifiermap(modmap);
136 /* select for events */
137 wa.event_mask = SubstructureRedirectMask | SubstructureNotifyMask
138 | EnterWindowMask | LeaveWindowMask | StructureNotifyMask;
139 wa.cursor = cursor[CurNormal];
140 XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);
141 XSelectInput(dpy, root, wa.event_mask);
144 for(ntags = 0; tags[ntags]; ntags++);
145 seltags = emallocz(sizeof(Bool) * ntags);
149 sw = DisplayWidth(dpy, screen);
150 sh = DisplayHeight(dpy, screen);
154 /* multihead support */
155 selscreen = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask);
159 * Startup Error handler to check if another window manager
160 * is already running.
163 xerrorstart(Display *dsply, XErrorEvent *ee) {
171 gettextprop(Window w, Atom atom, char *text, unsigned int size) {
176 if(!text || size == 0)
179 XGetTextProperty(dpy, w, &name, atom);
182 if(name.encoding == XA_STRING)
183 strncpy(text, (char *)name.value, size - 1);
185 if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
188 strncpy(text, *list, size - 1);
189 XFreeStringList(list);
192 text[size - 1] = '\0';
198 quit(const char *arg) {
199 readin = running = False;
202 /* There's no way to check accesses to destroyed windows, thus those cases are
203 * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
204 * default error handler, which may call exit.
207 xerror(Display *dpy, XErrorEvent *ee) {
208 if(ee->error_code == BadWindow
209 || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
210 || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
211 || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
212 || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
213 || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
214 || (ee->request_code == X_GrabKey && ee->error_code == BadAccess)
215 || (ee->request_code == X_CopyArea && ee->error_code == BadDrawable))
217 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
218 ee->request_code, ee->error_code);
219 return xerrorxlib(dpy, ee); /* may call exit */
223 main(int argc, char *argv[]) {
229 if(argc == 2 && !strcmp("-v", argv[1]))
230 eprint("dwm-"VERSION", © 2006-2007 A. R. Garbe, S. van Dijk, J. Salmi, P. Hruby, S. Nagy\n");
232 eprint("usage: dwm [-v]\n");
233 setlocale(LC_CTYPE, "");
234 if(!(dpy = XOpenDisplay(0)))
235 eprint("dwm: cannot open display\n");
236 xfd = ConnectionNumber(dpy);
237 screen = DefaultScreen(dpy);
238 root = RootWindow(dpy, screen);
240 XSetErrorHandler(xerrorstart);
241 /* this causes an error if some other window manager is running */
242 XSelectInput(dpy, root, SubstructureRedirectMask);
245 eprint("dwm: another window manager is already running\n");
248 XSetErrorHandler(NULL);
249 xerrorxlib = XSetErrorHandler(xerror);
255 /* main event loop, also reads status text from stdin */
261 FD_SET(STDIN_FILENO, &rd);
263 if(select(xfd + 1, &rd, NULL, NULL, NULL) == -1) {
266 eprint("select failed\n");
268 if(FD_ISSET(STDIN_FILENO, &rd)) {
269 switch(r = read(STDIN_FILENO, stext, sizeof stext - 1)) {
271 strncpy(stext, strerror(errno), sizeof stext - 1);
272 stext[sizeof stext - 1] = '\0';
276 strncpy(stext, "EOF", 4);
280 for(stext[r] = '\0', p = stext + strlen(stext) - 1; p >= stext && *p == '\n'; *p-- = '\0');
281 for(; p >= stext && *p != '\n'; --p);
283 strncpy(stext, p + 1, sizeof stext);
287 while(XPending(dpy)) {
288 XNextEvent(dpy, &ev);
290 (handler[ev.type])(&ev); /* call handler */