1 /* (C)opyright MMVI-MMVII Anselm R. Garbe <garbeam at gmail dot com>
2 * 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 char stext[1024], mtext[32];
22 int bx, by, bw, bh, bmw, masterd, screen, sx, sy, sw, sh, wax, way, waw, wah;
23 unsigned int master, nmaster, ntags, numlockmask;
24 Atom wmatom[WMLast], netatom[NetLast];
27 Client *clients = NULL;
30 Cursor cursor[CurLast];
37 static int (*xerrorxlib)(Display *, XErrorEvent *);
38 static Bool otherwm, readin;
44 resize(stack, True, TopLeft);
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);
70 if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
71 for(i = 0; i < num; i++) {
72 if(!XGetWindowAttributes(dpy, wins[i], &wa))
74 if(wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
76 if(wa.map_state == IsViewable)
89 XModifierKeymap *modmap;
90 XSetWindowAttributes wa;
93 wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
94 wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
95 netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
96 netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
97 XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
98 PropModeReplace, (unsigned char *) netatom, NetLast);
100 cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
101 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
102 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
103 /* init modifier map */
104 modmap = XGetModifierMapping(dpy);
105 for (i = 0; i < 8; i++) {
106 for (j = 0; j < modmap->max_keypermod; j++) {
107 if(modmap->modifiermap[i * modmap->max_keypermod + j] == XKeysymToKeycode(dpy, XK_Num_Lock))
108 numlockmask = (1 << i);
111 XFreeModifiermap(modmap);
112 /* select for events */
113 wa.event_mask = SubstructureRedirectMask | SubstructureNotifyMask
114 | EnterWindowMask | LeaveWindowMask;
115 wa.cursor = cursor[CurNormal];
116 XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);
119 for(ntags = 0; tags[ntags]; ntags++);
120 seltag = emallocz(sizeof(Bool) * ntags);
123 dc.norm[ColBG] = getcolor(NORMBGCOLOR);
124 dc.norm[ColFG] = getcolor(NORMFGCOLOR);
125 dc.sel[ColBG] = getcolor(SELBGCOLOR);
126 dc.sel[ColFG] = getcolor(SELFGCOLOR);
127 dc.status[ColBG] = getcolor(STATUSBGCOLOR);
128 dc.status[ColFG] = getcolor(STATUSFGCOLOR);
132 sw = DisplayWidth(dpy, screen);
133 sh = DisplayHeight(dpy, screen);
141 dc.h = bh = dc.font.height + 2;
142 wa.override_redirect = 1;
143 wa.background_pixmap = ParentRelative;
144 wa.event_mask = ButtonPressMask | ExposureMask;
145 barwin = XCreateWindow(dpy, root, bx, by, bw, bh, 0, DefaultDepth(dpy, screen),
146 CopyFromParent, DefaultVisual(dpy, screen),
147 CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
148 XDefineCursor(dpy, barwin, cursor[CurNormal]);
149 XMapRaised(dpy, barwin);
150 strcpy(stext, "dwm-"VERSION);
156 /* pixmap for everything */
157 dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
158 dc.gc = XCreateGC(dpy, root, 0, 0);
159 XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
160 /* multihead support */
161 issel = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask);
165 * Startup Error handler to check if another window manager
166 * is already running.
169 xerrorstart(Display *dsply, XErrorEvent *ee) {
178 int i, format, protos, status;
179 unsigned long extra, res;
180 Atom *protocols, real;
183 status = XGetWindowProperty(dpy, w, wmatom[WMProtocols], 0L, 20L, False,
184 XA_ATOM, &real, &format, &res, &extra, (unsigned char **)&protocols);
185 if(status != Success || protocols == 0)
187 for(i = 0; i < res; i++)
188 if(protocols[i] == wmatom[WMDelete])
189 protos |= PROTODELWIN;
195 sendevent(Window w, Atom a, long value) {
198 e.type = ClientMessage;
199 e.xclient.window = w;
200 e.xclient.message_type = a;
201 e.xclient.format = 32;
202 e.xclient.data.l[0] = value;
203 e.xclient.data.l[1] = CurrentTime;
204 XSendEvent(dpy, w, False, NoEventMask, &e);
210 readin = running = False;
213 /* There's no way to check accesses to destroyed windows, thus those cases are
214 * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
215 * default error handler, which may call exit.
218 xerror(Display *dpy, XErrorEvent *ee) {
219 if(ee->error_code == BadWindow
220 || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
221 || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
222 || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
223 || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
224 || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
225 || (ee->request_code == X_GrabKey && ee->error_code == BadAccess)
226 || (ee->request_code == X_CopyArea && ee->error_code == BadDrawable))
228 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
229 ee->request_code, ee->error_code);
230 return xerrorxlib(dpy, ee); /* may call exit */
234 main(int argc, char *argv[]) {
239 if(argc == 2 && !strncmp("-v", argv[1], 3)) {
240 fputs("dwm-"VERSION", (C)opyright MMVI-MMVII Anselm R. Garbe\n", stdout);
244 eprint("usage: dwm [-v]\n");
245 setlocale(LC_CTYPE, "");
246 dpy = XOpenDisplay(0);
248 eprint("dwm: cannot open display\n");
249 xfd = ConnectionNumber(dpy);
250 screen = DefaultScreen(dpy);
251 root = RootWindow(dpy, screen);
253 XSetErrorHandler(xerrorstart);
254 /* this causes an error if some other window manager is running */
255 XSelectInput(dpy, root, SubstructureRedirectMask);
258 eprint("dwm: another window manager is already running\n");
261 XSetErrorHandler(NULL);
262 xerrorxlib = XSetErrorHandler(xerror);
268 /* main event loop, also reads status text from stdin */
275 FD_SET(STDIN_FILENO, &rd);
277 if(select(xfd + 1, &rd, NULL, NULL, NULL) == -1) {
280 eprint("select failed\n");
282 if(FD_ISSET(STDIN_FILENO, &rd)) {
283 switch(r = read(STDIN_FILENO, stext, sizeof stext - 1)) {
285 strncpy(stext, strerror(errno), sizeof stext - 1);
286 stext[sizeof stext - 1] = '\0';
290 strncpy(stext, "EOF", 4);
294 for(stext[r] = '\0', p = stext + strlen(stext) - 1; p >= stext && *p == '\n'; *p-- = '\0');
295 for(p = stext + strlen(stext) - 1; p >= stext && *p != '\n'; --p);
297 strncpy(stext, p + 1, sizeof stext);
301 if(FD_ISSET(xfd, &rd))