Check if window manager supports fullscreen; related to issue #128
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parent
e2fa49ecfe
commit
2e758f78c1
43
window.c
43
window.c
@ -54,6 +54,9 @@ static int barheight;
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Atom atoms[ATOM_COUNT];
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static Bool fs_support;
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static Bool fs_warned;
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void win_init_font(Display *dpy, const char *fontstr)
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{
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int n;
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@ -102,6 +105,36 @@ unsigned long win_alloc_color(win_t *win, const char *name)
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return col.pixel;
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}
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void win_check_wm_support(Display *dpy, Window root)
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{
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int format;
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long offset = 0, length = 16;
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Atom *data, type;
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unsigned long i, nitems, bytes_left;
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Bool found = False;
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while (!found && length > 0) {
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if (XGetWindowProperty(dpy, root, atoms[ATOM__NET_SUPPORTED],
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offset, length, False, XA_ATOM, &type, &format,
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&nitems, &bytes_left, (unsigned char**) &data))
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{
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break;
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}
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if (type == XA_ATOM && format == 32) {
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for (i = 0; i < nitems; i++) {
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if (data[i] == atoms[ATOM__NET_WM_STATE_FULLSCREEN]) {
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found = True;
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fs_support = True;
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break;
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}
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}
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}
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XFree(data);
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offset += nitems;
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length = MIN(length, bytes_left / 4);
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}
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}
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#define INIT_ATOM_(atom) \
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atoms[ATOM_##atom] = XInternAtom(e->dpy, #atom, False);
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@ -150,6 +183,9 @@ void win_init(win_t *win)
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INIT_ATOM_(_NET_WM_ICON);
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INIT_ATOM_(_NET_WM_STATE);
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INIT_ATOM_(_NET_WM_STATE_FULLSCREEN);
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INIT_ATOM_(_NET_SUPPORTED);
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win_check_wm_support(e->dpy, RootWindow(e->dpy, e->scr));
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}
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void win_update_sizehints(win_t *win)
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@ -379,6 +415,13 @@ void win_toggle_fullscreen(win_t *win)
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if (win == NULL || win->xwin == None)
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return;
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if (!fs_support) {
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if (!fs_warned) {
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warn("window manager does not support fullscreen");
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fs_warned = True;
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}
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return;
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}
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win->fullscreen = !win->fullscreen;
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memset(&ev, 0, sizeof(ev));
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