2 * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
3 * See LICENSE file for license details.
10 #include <X11/cursorfont.h>
11 #include <X11/Xatom.h>
12 #include <X11/Xproto.h>
19 Atom wm_atom[WMLast], net_atom[NetLast];
20 Cursor cursor[CurLast];
21 XRectangle rect, barrect;
24 char *bartext, *shell;
25 int screen, sel_screen;
26 unsigned int lock_mask, numlock_mask;
31 enum { WM_PROTOCOL_DELWIN = 1 };
33 static Bool other_wm_running;
34 static int (*x_error_handler) (Display *, XErrorEvent *);
35 static char version[] = "gridwm - " VERSION ", (C)opyright MMVI Anselm R. Garbe\n";
40 fputs("usage: gridwm [-v]\n", stderr);
52 if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
53 for(i = 0; i < num; i++) {
54 if(!XGetWindowAttributes(dpy, wins[i], &wa))
56 if(wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
58 if(wa.map_state == IsViewable)
67 win_property(Window w, Atom a, Atom t, long l, unsigned char **prop)
71 unsigned long res, extra;
74 status = XGetWindowProperty(dpy, w, a, 0L, l, False, t, &real, &format,
77 if(status != Success || *prop == 0) {
94 res = win_property(w, wm_atom[WMProtocols], XA_ATOM, 20L,
95 ((unsigned char **) &protocols));
99 for(i = 0; i < res; i++) {
100 if(protocols[i] == wm_atom[WMDelete])
101 protos |= WM_PROTOCOL_DELWIN;
103 free((char *) protocols);
108 * There's no way to check accesses to destroyed windows, thus
109 * those cases are ignored (especially on UnmapNotify's).
110 * Other types of errors call Xlib's default error handler, which
114 error_handler(Display *dpy, XErrorEvent *error)
116 if(error->error_code == BadWindow
117 || (error->request_code == X_SetInputFocus
118 && error->error_code == BadMatch)
119 || (error->request_code == X_PolyText8
120 && error->error_code == BadDrawable)
121 || (error->request_code == X_PolyFillRectangle
122 && error->error_code == BadDrawable)
123 || (error->request_code == X_PolySegment
124 && error->error_code == BadDrawable)
125 || (error->request_code == X_ConfigureWindow
126 && error->error_code == BadMatch)
127 || (error->request_code == X_GrabKey
128 && error->error_code == BadAccess))
130 fprintf(stderr, "gridwm: fatal error: request code=%d, error code=%d\n",
131 error->request_code, error->error_code);
132 return x_error_handler(dpy, error); /* may call exit() */
136 * Startup Error handler to check if another window manager
137 * is already running.
140 startup_error_handler(Display *dpy, XErrorEvent *error)
142 other_wm_running = True;
149 XModifierKeymap *modmap;
152 static int masks[] = {
153 ShiftMask, LockMask, ControlMask, Mod1Mask,
154 Mod2Mask, Mod3Mask, Mod4Mask, Mod5Mask
158 modmap = XGetModifierMapping(dpy);
159 numlock = XKeysymToKeycode(dpy, XStringToKeysym("Num_Lock"));
161 if(modmap && modmap->max_keypermod > 0) {
162 int max = (sizeof(masks) / sizeof(int)) * modmap->max_keypermod;
163 for(i = 0; i < max; i++)
164 if(numlock && (modmap->modifiermap[i] == numlock))
165 numlock_mask = masks[i / modmap->max_keypermod];
167 XFreeModifiermap(modmap);
169 lock_mask = 255 & ~(numlock_mask | LockMask);
177 for(c=client; c; c=c->next)
178 reparent_client(c, root, c->sel->rect.x, c->sel->rect.y);
179 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
184 main(int argc, char *argv[])
187 XSetWindowAttributes wa;
192 /* command line args */
193 for(i = 1; (i < argc) && (argv[i][0] == '-'); i++) {
194 switch (argv[i][1]) {
196 fprintf(stdout, "%s", version);
205 dpy = XOpenDisplay(0);
207 error("gridwm: cannot connect X server\n");
209 screen = DefaultScreen(dpy);
210 root = RootWindow(dpy, screen);
212 /* check if another WM is already running */
213 other_wm_running = False;
214 XSetErrorHandler(startup_error_handler);
215 /* this causes an error if some other WM is running */
216 XSelectInput(dpy, root, SubstructureRedirectMask);
220 error("gridwm: another window manager is already running\n");
222 if(!(shell = getenv("SHELL")))
226 rect.width = DisplayWidth(dpy, screen);
227 rect.height = DisplayHeight(dpy, screen);
228 sel_screen = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask);
231 x_error_handler = XSetErrorHandler(error_handler);
234 wm_atom[WMState] = XInternAtom(dpy, "WM_STATE", False);
235 wm_atom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
236 wm_atom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
237 net_atom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
238 net_atom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
240 XChangeProperty(dpy, root, net_atom[NetSupported], XA_ATOM, 32,
241 PropModeReplace, (unsigned char *) net_atom, NetLast);
245 cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
246 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
247 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
251 brush.drawable = XCreatePixmap(dpy, root, rect.width, rect.height,
252 DefaultDepth(dpy, screen));
253 brush.gc = XCreateGC(dpy, root, 0, 0);
256 loadcolors(dpy, screen, &brush, BGCOLOR, FGCOLOR, BORDERCOLOR);
257 loadfont(dpy, &brush.font, FONT);
259 wa.override_redirect = 1;
260 wa.background_pixmap = ParentRelative;
261 wa.event_mask = ExposureMask;
264 barrect.height = labelheight(&brush.font);
265 barrect.y = rect.height - barrect.height;
266 barwin = XCreateWindow(dpy, root, barrect.x, barrect.y,
267 barrect.width, barrect.height, 0, DefaultDepth(dpy, screen),
268 CopyFromParent, DefaultVisual(dpy, screen),
269 CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
271 XDefineCursor(dpy, barwin, cursor[CurNormal]);
272 XMapRaised(dpy, barwin);
275 wa.event_mask = SubstructureRedirectMask | EnterWindowMask | LeaveWindowMask;
276 wa.cursor = cursor[CurNormal];
277 XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);
282 XNextEvent(dpy, &ev);
284 (handler[ev.type]) (&ev); /* call handler */