1 /* (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
2 * See LICENSE file for license details.
11 #include <sys/select.h>
12 #include <X11/cursorfont.h>
13 #include <X11/keysym.h>
14 #include <X11/Xatom.h>
15 #include <X11/Xproto.h>
21 int bx, by, bw, bh, bmw, masterd, screen, sx, sy, sw, sh, wax, way, waw, wah;
22 unsigned int master, ntags, numlockmask;
23 Atom wmatom[WMLast], netatom[NetLast];
26 Client *clients = NULL;
29 Cursor cursor[CurLast];
36 static int (*xerrorxlib)(Display *, XErrorEvent *);
37 static Bool otherwm, readin;
43 resize(sel, True, TopLeft);
47 XFreeFontSet(dpy, dc.font.set);
49 XFreeFont(dpy, dc.font.xfont);
50 XUngrabKey(dpy, AnyKey, AnyModifier, root);
51 XFreePixmap(dpy, dc.drawable);
53 XDestroyWindow(dpy, barwin);
54 XFreeCursor(dpy, cursor[CurNormal]);
55 XFreeCursor(dpy, cursor[CurResize]);
56 XFreeCursor(dpy, cursor[CurMove]);
57 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
69 if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
70 for(i = 0; i < num; i++) {
71 if(!XGetWindowAttributes(dpy, wins[i], &wa))
73 if(wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
75 if(wa.map_state == IsViewable)
88 XModifierKeymap *modmap;
89 XSetWindowAttributes wa;
92 wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
93 wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
94 netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
95 netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
96 XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
97 PropModeReplace, (unsigned char *) netatom, NetLast);
99 cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
100 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
101 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
102 /* init modifier map */
103 modmap = XGetModifierMapping(dpy);
104 for (i = 0; i < 8; i++) {
105 for (j = 0; j < modmap->max_keypermod; j++) {
106 if(modmap->modifiermap[i * modmap->max_keypermod + j] == XKeysymToKeycode(dpy, XK_Num_Lock))
107 numlockmask = (1 << i);
110 XFreeModifiermap(modmap);
111 /* select for events */
112 wa.event_mask = SubstructureRedirectMask | SubstructureNotifyMask
113 | EnterWindowMask | LeaveWindowMask;
114 wa.cursor = cursor[CurNormal];
115 XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);
118 for(ntags = 0; tags[ntags]; ntags++);
119 seltag = emallocz(sizeof(Bool) * ntags);
122 dc.norm[ColBG] = getcolor(NORMBGCOLOR);
123 dc.norm[ColFG] = getcolor(NORMFGCOLOR);
124 dc.sel[ColBG] = getcolor(SELBGCOLOR);
125 dc.sel[ColFG] = getcolor(SELFGCOLOR);
126 dc.status[ColBG] = getcolor(STATUSBGCOLOR);
127 dc.status[ColFG] = getcolor(STATUSFGCOLOR);
130 bmw = textw(TILESYMBOL) > textw(FLOATSYMBOL) ? textw(TILESYMBOL) : textw(FLOATSYMBOL);
132 sw = DisplayWidth(dpy, screen);
133 sh = DisplayHeight(dpy, screen);
139 dc.h = bh = dc.font.height + 2;
140 wa.override_redirect = 1;
141 wa.background_pixmap = ParentRelative;
142 wa.event_mask = ButtonPressMask | ExposureMask;
143 barwin = XCreateWindow(dpy, root, bx, by, bw, bh, 0, DefaultDepth(dpy, screen),
144 CopyFromParent, DefaultVisual(dpy, screen),
145 CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
146 XDefineCursor(dpy, barwin, cursor[CurNormal]);
147 XMapRaised(dpy, barwin);
148 strcpy(stext, "dwm-"VERSION);
154 /* pixmap for everything */
155 dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
156 dc.gc = XCreateGC(dpy, root, 0, 0);
157 XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
158 /* multihead support */
159 issel = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask);
163 * Startup Error handler to check if another window manager
164 * is already running.
167 xerrorstart(Display *dsply, XErrorEvent *ee) {
176 int i, format, protos, status;
177 unsigned long extra, res;
178 Atom *protocols, real;
181 status = XGetWindowProperty(dpy, w, wmatom[WMProtocols], 0L, 20L, False,
182 XA_ATOM, &real, &format, &res, &extra, (unsigned char **)&protocols);
183 if(status != Success || protocols == 0)
185 for(i = 0; i < res; i++)
186 if(protocols[i] == wmatom[WMDelete])
187 protos |= PROTODELWIN;
193 sendevent(Window w, Atom a, long value) {
196 e.type = ClientMessage;
197 e.xclient.window = w;
198 e.xclient.message_type = a;
199 e.xclient.format = 32;
200 e.xclient.data.l[0] = value;
201 e.xclient.data.l[1] = CurrentTime;
202 XSendEvent(dpy, w, False, NoEventMask, &e);
208 readin = running = False;
211 /* There's no way to check accesses to destroyed windows, thus those cases are
212 * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
213 * default error handler, which may call exit.
216 xerror(Display *dpy, XErrorEvent *ee) {
217 if(ee->error_code == BadWindow
218 || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
219 || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
220 || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
221 || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
222 || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
223 || (ee->request_code == X_GrabKey && ee->error_code == BadAccess)
224 || (ee->request_code == X_CopyArea && ee->error_code == BadDrawable))
226 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
227 ee->request_code, ee->error_code);
228 return xerrorxlib(dpy, ee); /* may call exit */
232 main(int argc, char *argv[]) {
237 if(argc == 2 && !strncmp("-v", argv[1], 3)) {
238 fputs("dwm-"VERSION", (C)opyright MMVI Anselm R. Garbe\n", stdout);
242 eprint("usage: dwm [-v]\n");
243 dpy = XOpenDisplay(0);
245 eprint("dwm: cannot open display\n");
246 xfd = ConnectionNumber(dpy);
247 screen = DefaultScreen(dpy);
248 root = RootWindow(dpy, screen);
250 XSetErrorHandler(xerrorstart);
251 /* this causes an error if some other window manager is running */
252 XSelectInput(dpy, root, SubstructureRedirectMask);
255 eprint("dwm: another window manager is already running\n");
258 XSetErrorHandler(NULL);
259 xerrorxlib = XSetErrorHandler(xerror);
265 /* main event loop, also reads status text from stdin */
272 FD_SET(STDIN_FILENO, &rd);
274 if(select(xfd + 1, &rd, NULL, NULL, NULL) == -1) {
277 eprint("select failed\n");
279 if(FD_ISSET(STDIN_FILENO, &rd)) {
280 switch(r = read(STDIN_FILENO, stext, sizeof stext - 1)) {
282 strncpy(stext, strerror(errno), sizeof stext - 1);
283 stext[sizeof stext - 1] = '\0';
287 strncpy(stext, "EOF", 4);
291 for(stext[r] = '\0', p = stext + strlen(stext) - 1; p >= stext && *p == '\n'; *p-- = '\0');
292 for(p = stext + strlen(stext) - 1; p >= stext && *p != '\n'; --p);
294 strncpy(stext, p + 1, sizeof stext);
298 if(FD_ISSET(xfd, &rd))