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>
18 int screen, sx, sy, sw, sh, wax, way, waw, wah;
19 unsigned int bh, bpos, ntags, numlockmask;
20 Atom wmatom[WMLast], netatom[NetLast];
22 Bool selscreen = True;
23 Client *clients = NULL;
26 Cursor cursor[CurLast];
33 static int (*xerrorxlib)(Display *, XErrorEvent *);
34 static Bool otherwm, readin;
35 static Bool running = True;
45 XFreeFontSet(dpy, dc.font.set);
47 XFreeFont(dpy, dc.font.xfont);
48 XUngrabKey(dpy, AnyKey, AnyModifier, root);
49 XFreePixmap(dpy, dc.drawable);
51 XDestroyWindow(dpy, barwin);
52 XFreeCursor(dpy, cursor[CurNormal]);
53 XFreeCursor(dpy, cursor[CurResize]);
54 XFreeCursor(dpy, cursor[CurMove]);
55 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
61 initcolor(const char *colstr) {
62 Colormap cmap = DefaultColormap(dpy, screen);
65 if(!XAllocNamedColor(dpy, cmap, colstr, &color, &color))
66 eprint("error, cannot allocate color '%s'\n", colstr);
71 initfont(const char *fontstr) {
77 XFreeFontSet(dpy, dc.font.set);
78 dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
81 fprintf(stderr, "dwm: missing fontset: %s\n", missing[n]);
82 XFreeStringList(missing);
85 XFontSetExtents *font_extents;
88 dc.font.ascent = dc.font.descent = 0;
89 font_extents = XExtentsOfFontSet(dc.font.set);
90 n = XFontsOfFontSet(dc.font.set, &xfonts, &font_names);
91 for(i = 0, dc.font.ascent = 0, dc.font.descent = 0; i < n; i++) {
92 if(dc.font.ascent < (*xfonts)->ascent)
93 dc.font.ascent = (*xfonts)->ascent;
94 if(dc.font.descent < (*xfonts)->descent)
95 dc.font.descent = (*xfonts)->descent;
101 XFreeFont(dpy, dc.font.xfont);
102 dc.font.xfont = NULL;
103 if(!(dc.font.xfont = XLoadQueryFont(dpy, fontstr)))
104 eprint("error, cannot load font: '%s'\n", fontstr);
105 dc.font.ascent = dc.font.xfont->ascent;
106 dc.font.descent = dc.font.xfont->descent;
108 dc.font.height = dc.font.ascent + dc.font.descent;
114 Window *wins, d1, d2;
115 XWindowAttributes wa;
118 if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
119 for(i = 0; i < num; i++) {
120 if(!XGetWindowAttributes(dpy, wins[i], &wa)
121 || wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
123 if(wa.map_state == IsViewable)
124 manage(wins[i], &wa);
136 XModifierKeymap *modmap;
137 XSetWindowAttributes wa;
140 wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
141 wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
142 wmatom[WMState] = XInternAtom(dpy, "WM_STATE", False);
143 netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
144 netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
145 XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
146 PropModeReplace, (unsigned char *) netatom, NetLast);
148 cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
149 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
150 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
151 /* init modifier map */
153 modmap = XGetModifierMapping(dpy);
154 for (i = 0; i < 8; i++)
155 for (j = 0; j < modmap->max_keypermod; j++) {
156 if(modmap->modifiermap[i * modmap->max_keypermod + j]
157 == XKeysymToKeycode(dpy, XK_Num_Lock))
158 numlockmask = (1 << i);
160 XFreeModifiermap(modmap);
161 /* select for events */
162 wa.event_mask = SubstructureRedirectMask | SubstructureNotifyMask
163 | EnterWindowMask | LeaveWindowMask | StructureNotifyMask;
164 wa.cursor = cursor[CurNormal];
165 XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);
166 XSelectInput(dpy, root, wa.event_mask);
169 for(ntags = 0; tags[ntags]; ntags++);
170 seltag = emallocz(sizeof(Bool) * ntags);
173 dc.norm[ColBorder] = initcolor(NORMBORDERCOLOR);
174 dc.norm[ColBG] = initcolor(NORMBGCOLOR);
175 dc.norm[ColFG] = initcolor(NORMFGCOLOR);
176 dc.sel[ColBorder] = initcolor(SELBORDERCOLOR);
177 dc.sel[ColBG] = initcolor(SELBGCOLOR);
178 dc.sel[ColFG] = initcolor(SELFGCOLOR);
182 sw = DisplayWidth(dpy, screen);
183 sh = DisplayHeight(dpy, screen);
186 dc.h = bh = dc.font.height + 2;
187 wa.override_redirect = 1;
188 wa.background_pixmap = ParentRelative;
189 wa.event_mask = ButtonPressMask | ExposureMask;
190 barwin = XCreateWindow(dpy, root, sx, sy, sw, bh, 0,
191 DefaultDepth(dpy, screen), CopyFromParent, DefaultVisual(dpy, screen),
192 CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
193 XDefineCursor(dpy, barwin, cursor[CurNormal]);
196 XMapRaised(dpy, barwin);
197 strcpy(stext, "dwm-"VERSION);
198 /* pixmap for everything */
199 dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
200 dc.gc = XCreateGC(dpy, root, 0, 0);
201 XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
203 XSetFont(dpy, dc.gc, dc.font.xfont->fid);
204 /* multihead support */
205 selscreen = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask);
209 * Startup Error handler to check if another window manager
210 * is already running.
213 xerrorstart(Display *dsply, XErrorEvent *ee) {
221 quit(const char *arg) {
222 readin = running = False;
237 XMoveWindow(dpy, barwin, sx, sy);
241 XMoveWindow(dpy, barwin, sx, sy + wah);
244 XMoveWindow(dpy, barwin, sx, sy - bh);
248 while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
251 /* There's no way to check accesses to destroyed windows, thus those cases are
252 * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
253 * default error handler, which may call exit.
256 xerror(Display *dpy, XErrorEvent *ee) {
257 if(ee->error_code == BadWindow
258 || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
259 || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
260 || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
261 || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
262 || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
263 || (ee->request_code == X_GrabKey && ee->error_code == BadAccess)
264 || (ee->request_code == X_CopyArea && ee->error_code == BadDrawable))
266 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
267 ee->request_code, ee->error_code);
268 return xerrorxlib(dpy, ee); /* may call exit */
272 main(int argc, char *argv[]) {
278 if(argc == 2 && !strcmp("-v", argv[1]))
279 eprint("dwm-"VERSION", © 2006-2007 A. R. Garbe, S. van Dijk, J. Salmi, P. Hruby, S. Nagy\n");
281 eprint("usage: dwm [-v]\n");
282 setlocale(LC_CTYPE, "");
283 if(!(dpy = XOpenDisplay(0)))
284 eprint("dwm: cannot open display\n");
285 xfd = ConnectionNumber(dpy);
286 screen = DefaultScreen(dpy);
287 root = RootWindow(dpy, screen);
289 XSetErrorHandler(xerrorstart);
290 /* this causes an error if some other window manager is running */
291 XSelectInput(dpy, root, SubstructureRedirectMask);
294 eprint("dwm: another window manager is already running\n");
297 XSetErrorHandler(NULL);
298 xerrorxlib = XSetErrorHandler(xerror);
304 /* main event loop, also reads status text from stdin */
310 FD_SET(STDIN_FILENO, &rd);
312 if(select(xfd + 1, &rd, NULL, NULL, NULL) == -1) {
315 eprint("select failed\n");
317 if(FD_ISSET(STDIN_FILENO, &rd)) {
318 switch(r = read(STDIN_FILENO, stext, sizeof stext - 1)) {
320 strncpy(stext, strerror(errno), sizeof stext - 1);
321 stext[sizeof stext - 1] = '\0';
325 strncpy(stext, "EOF", 4);
329 for(stext[r] = '\0', p = stext + strlen(stext) - 1; p >= stext && *p == '\n'; *p-- = '\0');
330 for(; p >= stext && *p != '\n'; --p);
332 strncpy(stext, p + 1, sizeof stext);
336 while(XPending(dpy)) {
337 XNextEvent(dpy, &ev);
339 (handler[ev.type])(&ev); /* call handler */