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>
21 int screen, sx, sy, sw, sh, wax, way, waw, wah;
22 unsigned int bh, ntags, numlockmask;
23 Atom wmatom[WMLast], netatom[NetLast];
25 Bool selscreen = True;
26 Client *clients = NULL;
29 Cursor cursor[CurLast];
36 static int (*xerrorxlib)(Display *, XErrorEvent *);
37 static Bool otherwm, readin;
38 static Bool running = True;
45 XMoveWindow(dpy, stack->win, stack->x, stack->y);
49 XFreeFontSet(dpy, dc.font.set);
51 XFreeFont(dpy, dc.font.xfont);
52 XUngrabKey(dpy, AnyKey, AnyModifier, root);
53 XFreePixmap(dpy, dc.drawable);
55 XDestroyWindow(dpy, barwin);
56 XFreeCursor(dpy, cursor[CurNormal]);
57 XFreeCursor(dpy, cursor[CurResize]);
58 XFreeCursor(dpy, cursor[CurMove]);
59 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
65 initcolor(const char *colstr) {
66 Colormap cmap = DefaultColormap(dpy, screen);
69 if(!XAllocNamedColor(dpy, cmap, colstr, &color, &color))
70 eprint("error, cannot allocate color '%s'\n", colstr);
75 initfont(const char *fontstr) {
81 XFreeFontSet(dpy, dc.font.set);
82 dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
85 fprintf(stderr, "missing fontset: %s\n", missing[n]);
86 XFreeStringList(missing);
89 XFontSetExtents *font_extents;
92 dc.font.ascent = dc.font.descent = 0;
93 font_extents = XExtentsOfFontSet(dc.font.set);
94 n = XFontsOfFontSet(dc.font.set, &xfonts, &font_names);
95 for(i = 0, dc.font.ascent = 0, dc.font.descent = 0; i < n; i++) {
96 if(dc.font.ascent < (*xfonts)->ascent)
97 dc.font.ascent = (*xfonts)->ascent;
98 if(dc.font.descent < (*xfonts)->descent)
99 dc.font.descent = (*xfonts)->descent;
105 XFreeFont(dpy, dc.font.xfont);
106 dc.font.xfont = NULL;
107 if(!(dc.font.xfont = XLoadQueryFont(dpy, fontstr)))
108 eprint("error, cannot load font: '%s'\n", fontstr);
109 dc.font.ascent = dc.font.xfont->ascent;
110 dc.font.descent = dc.font.xfont->descent;
112 dc.font.height = dc.font.ascent + dc.font.descent;
118 Window *wins, d1, d2;
119 XWindowAttributes wa;
122 if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
123 for(i = 0; i < num; i++) {
124 if(!XGetWindowAttributes(dpy, wins[i], &wa)
125 || wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
127 if(wa.map_state == IsViewable)
128 manage(wins[i], &wa);
140 XModifierKeymap *modmap;
141 XSetWindowAttributes wa;
144 wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
145 wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
146 wmatom[WMState] = XInternAtom(dpy, "WM_STATE", False);
147 netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
148 netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
149 XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
150 PropModeReplace, (unsigned char *) netatom, NetLast);
152 cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
153 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
154 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
155 /* init modifier map */
157 modmap = XGetModifierMapping(dpy);
158 for (i = 0; i < 8; i++)
159 for (j = 0; j < modmap->max_keypermod; j++) {
160 if(modmap->modifiermap[i * modmap->max_keypermod + j]
161 == XKeysymToKeycode(dpy, XK_Num_Lock))
162 numlockmask = (1 << i);
164 XFreeModifiermap(modmap);
165 /* select for events */
166 wa.event_mask = SubstructureRedirectMask | SubstructureNotifyMask
167 | EnterWindowMask | LeaveWindowMask;
168 wa.cursor = cursor[CurNormal];
169 XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);
172 for(ntags = 0; tags[ntags]; ntags++);
173 seltag = emallocz(sizeof(Bool) * ntags);
176 dc.norm[ColBorder] = initcolor(NORMBORDERCOLOR);
177 dc.norm[ColBG] = initcolor(NORMBGCOLOR);
178 dc.norm[ColFG] = initcolor(NORMFGCOLOR);
179 dc.sel[ColBorder] = initcolor(SELBORDERCOLOR);
180 dc.sel[ColBG] = initcolor(SELBGCOLOR);
181 dc.sel[ColFG] = initcolor(SELFGCOLOR);
185 sw = DisplayWidth(dpy, screen);
186 sh = DisplayHeight(dpy, screen);
189 dc.h = bh = dc.font.height + 2;
190 wa.override_redirect = 1;
191 wa.background_pixmap = ParentRelative;
192 wa.event_mask = ButtonPressMask | ExposureMask;
193 barwin = XCreateWindow(dpy, root, sx, sy + (TOPBAR ? 0 : sh - bh), sw, bh, 0,
194 DefaultDepth(dpy, screen), CopyFromParent, DefaultVisual(dpy, screen),
195 CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
196 XDefineCursor(dpy, barwin, cursor[CurNormal]);
197 XMapRaised(dpy, barwin);
198 strcpy(stext, "dwm-"VERSION);
201 way = sy + (TOPBAR ? bh : 0);
204 /* pixmap for everything */
205 dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
206 dc.gc = XCreateGC(dpy, root, 0, 0);
207 XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
208 /* multihead support */
209 selscreen = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask);
213 * Startup Error handler to check if another window manager
214 * is already running.
217 xerrorstart(Display *dsply, XErrorEvent *ee) {
225 sendevent(Window w, Atom a, long value) {
228 e.type = ClientMessage;
229 e.xclient.window = w;
230 e.xclient.message_type = a;
231 e.xclient.format = 32;
232 e.xclient.data.l[0] = value;
233 e.xclient.data.l[1] = CurrentTime;
234 XSendEvent(dpy, w, False, NoEventMask, &e);
240 readin = running = False;
243 /* There's no way to check accesses to destroyed windows, thus those cases are
244 * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
245 * default error handler, which may call exit.
248 xerror(Display *dpy, XErrorEvent *ee) {
249 if(ee->error_code == BadWindow
250 || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
251 || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
252 || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
253 || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
254 || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
255 || (ee->request_code == X_GrabKey && ee->error_code == BadAccess)
256 || (ee->request_code == X_CopyArea && ee->error_code == BadDrawable))
258 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
259 ee->request_code, ee->error_code);
260 return xerrorxlib(dpy, ee); /* may call exit */
264 main(int argc, char *argv[]) {
270 if(argc == 2 && !strncmp("-v", argv[1], 3))
271 eprint("dwm-"VERSION", (C)opyright MMVI-MMVII Anselm R. Garbe\n");
273 eprint("usage: dwm [-v]\n");
274 setlocale(LC_CTYPE, "");
275 if(!(dpy = XOpenDisplay(0)))
276 eprint("dwm: cannot open display\n");
277 xfd = ConnectionNumber(dpy);
278 screen = DefaultScreen(dpy);
279 root = RootWindow(dpy, screen);
281 XSetErrorHandler(xerrorstart);
282 /* this causes an error if some other window manager is running */
283 XSelectInput(dpy, root, SubstructureRedirectMask);
286 eprint("dwm: another window manager is already running\n");
289 XSetErrorHandler(NULL);
290 xerrorxlib = XSetErrorHandler(xerror);
296 /* main event loop, also reads status text from stdin */
302 FD_SET(STDIN_FILENO, &rd);
304 if(select(xfd + 1, &rd, NULL, NULL, NULL) == -1) {
307 eprint("select failed\n");
309 if(FD_ISSET(STDIN_FILENO, &rd)) {
310 switch(r = read(STDIN_FILENO, stext, sizeof stext - 1)) {
312 strncpy(stext, strerror(errno), sizeof stext - 1);
313 stext[sizeof stext - 1] = '\0';
317 strncpy(stext, "EOF", 4);
321 for(stext[r] = '\0', p = stext + strlen(stext) - 1; p >= stext && *p == '\n'; *p-- = '\0');
322 for(; p >= stext && *p != '\n'; --p);
324 strncpy(stext, p + 1, sizeof stext);
328 while(XPending(dpy)) {
329 XNextEvent(dpy, &ev);
331 (handler[ev.type])(&ev); /* call handler */