1 /* © 2006-2007 Anselm R. Garbe <garbeam at gmail dot com>
2 * © 2006-2007 Sander van Dijk <a dot h dot vandijk at gmail dot com>
3 * 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>
20 int screen, sx, sy, sw, sh, wax, way, waw, wah;
21 unsigned int bh, ntags, numlockmask;
22 Atom wmatom[WMLast], netatom[NetLast];
24 Bool selscreen = True;
25 Client *clients = NULL;
28 Cursor cursor[CurLast];
35 static int (*xerrorxlib)(Display *, XErrorEvent *);
36 static Bool otherwm, readin;
37 static Bool running = True;
44 XMoveWindow(dpy, stack->win, stack->x, stack->y);
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);
64 initcolor(const char *colstr) {
65 Colormap cmap = DefaultColormap(dpy, screen);
68 if(!XAllocNamedColor(dpy, cmap, colstr, &color, &color))
69 eprint("error, cannot allocate color '%s'\n", colstr);
74 initfont(const char *fontstr) {
80 XFreeFontSet(dpy, dc.font.set);
81 dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
84 fprintf(stderr, "missing fontset: %s\n", missing[n]);
85 XFreeStringList(missing);
88 XFontSetExtents *font_extents;
91 dc.font.ascent = dc.font.descent = 0;
92 font_extents = XExtentsOfFontSet(dc.font.set);
93 n = XFontsOfFontSet(dc.font.set, &xfonts, &font_names);
94 for(i = 0, dc.font.ascent = 0, dc.font.descent = 0; i < n; i++) {
95 if(dc.font.ascent < (*xfonts)->ascent)
96 dc.font.ascent = (*xfonts)->ascent;
97 if(dc.font.descent < (*xfonts)->descent)
98 dc.font.descent = (*xfonts)->descent;
104 XFreeFont(dpy, dc.font.xfont);
105 dc.font.xfont = NULL;
106 if(!(dc.font.xfont = XLoadQueryFont(dpy, fontstr)))
107 eprint("error, cannot load font: '%s'\n", fontstr);
108 dc.font.ascent = dc.font.xfont->ascent;
109 dc.font.descent = dc.font.xfont->descent;
111 dc.font.height = dc.font.ascent + dc.font.descent;
117 Window *wins, d1, d2;
118 XWindowAttributes wa;
121 if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
122 for(i = 0; i < num; i++) {
123 if(!XGetWindowAttributes(dpy, wins[i], &wa)
124 || wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
126 if(wa.map_state == IsViewable)
127 manage(wins[i], &wa);
139 XModifierKeymap *modmap;
140 XSetWindowAttributes wa;
143 wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
144 wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
145 wmatom[WMState] = XInternAtom(dpy, "WM_STATE", False);
146 netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
147 netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
148 XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
149 PropModeReplace, (unsigned char *) netatom, NetLast);
151 cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
152 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
153 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
154 /* init modifier map */
156 modmap = XGetModifierMapping(dpy);
157 for (i = 0; i < 8; i++)
158 for (j = 0; j < modmap->max_keypermod; j++) {
159 if(modmap->modifiermap[i * modmap->max_keypermod + j]
160 == XKeysymToKeycode(dpy, XK_Num_Lock))
161 numlockmask = (1 << i);
163 XFreeModifiermap(modmap);
164 /* select for events */
165 wa.event_mask = SubstructureRedirectMask | SubstructureNotifyMask
166 | EnterWindowMask | LeaveWindowMask;
167 wa.cursor = cursor[CurNormal];
168 XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);
171 for(ntags = 0; tags[ntags]; ntags++);
172 seltag = emallocz(sizeof(Bool) * ntags);
175 dc.norm[ColBorder] = initcolor(NORMBORDERCOLOR);
176 dc.norm[ColBG] = initcolor(NORMBGCOLOR);
177 dc.norm[ColFG] = initcolor(NORMFGCOLOR);
178 dc.sel[ColBorder] = initcolor(SELBORDERCOLOR);
179 dc.sel[ColBG] = initcolor(SELBGCOLOR);
180 dc.sel[ColFG] = initcolor(SELFGCOLOR);
184 sw = DisplayWidth(dpy, screen);
185 sh = DisplayHeight(dpy, screen);
188 dc.h = bh = dc.font.height + 2;
189 wa.override_redirect = 1;
190 wa.background_pixmap = ParentRelative;
191 wa.event_mask = ButtonPressMask | ExposureMask;
192 barwin = XCreateWindow(dpy, root, sx, sy + (TOPBAR ? 0 : sh - bh), sw, bh, 0,
193 DefaultDepth(dpy, screen), CopyFromParent, DefaultVisual(dpy, screen),
194 CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
195 XDefineCursor(dpy, barwin, cursor[CurNormal]);
196 XMapRaised(dpy, barwin);
197 strcpy(stext, "dwm-"VERSION);
200 way = sy + (TOPBAR ? bh : 0);
203 /* pixmap for everything */
204 dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
205 dc.gc = XCreateGC(dpy, root, 0, 0);
206 XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
208 XSetFont(dpy, dc.gc, dc.font.xfont->fid);
209 /* multihead support */
210 selscreen = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask);
214 * Startup Error handler to check if another window manager
215 * is already running.
218 xerrorstart(Display *dsply, XErrorEvent *ee) {
226 quit(const char *arg) {
227 readin = running = False;
230 /* There's no way to check accesses to destroyed windows, thus those cases are
231 * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
232 * default error handler, which may call exit.
235 xerror(Display *dpy, XErrorEvent *ee) {
236 if(ee->error_code == BadWindow
237 || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
238 || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
239 || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
240 || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
241 || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
242 || (ee->request_code == X_GrabKey && ee->error_code == BadAccess)
243 || (ee->request_code == X_CopyArea && ee->error_code == BadDrawable))
245 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
246 ee->request_code, ee->error_code);
247 return xerrorxlib(dpy, ee); /* may call exit */
251 main(int argc, char *argv[]) {
257 if(argc == 2 && !strncmp("-v", argv[1], 3))
258 eprint("dwm-"VERSION", © 2004-2007 Anselm R. Garbe, Sander van Dijk\n");
260 eprint("usage: dwm [-v]\n");
261 setlocale(LC_CTYPE, "");
262 if(!(dpy = XOpenDisplay(0)))
263 eprint("dwm: cannot open display\n");
264 xfd = ConnectionNumber(dpy);
265 screen = DefaultScreen(dpy);
266 root = RootWindow(dpy, screen);
268 XSetErrorHandler(xerrorstart);
269 /* this causes an error if some other window manager is running */
270 XSelectInput(dpy, root, SubstructureRedirectMask);
273 eprint("dwm: another window manager is already running\n");
276 XSetErrorHandler(NULL);
277 xerrorxlib = XSetErrorHandler(xerror);
283 /* main event loop, also reads status text from stdin */
289 FD_SET(STDIN_FILENO, &rd);
291 if(select(xfd + 1, &rd, NULL, NULL, NULL) == -1) {
294 eprint("select failed\n");
296 if(FD_ISSET(STDIN_FILENO, &rd)) {
297 switch(r = read(STDIN_FILENO, stext, sizeof stext - 1)) {
299 strncpy(stext, strerror(errno), sizeof stext - 1);
300 stext[sizeof stext - 1] = '\0';
304 strncpy(stext, "EOF", 4);
308 for(stext[r] = '\0', p = stext + strlen(stext) - 1; p >= stext && *p == '\n'; *p-- = '\0');
309 for(; p >= stext && *p != '\n'; --p);
311 strncpy(stext, p + 1, sizeof stext);
315 while(XPending(dpy)) {
316 XNextEvent(dpy, &ev);
318 (handler[ev.type])(&ev); /* call handler */