Check if window manager supports fullscreen; related to issue #128

This commit is contained in:
Bert Münnich 2014-02-02 14:56:01 +01:00
parent e2fa49ecfe
commit 2e758f78c1
2 changed files with 44 additions and 0 deletions

View File

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

View File

@ -36,6 +36,7 @@ enum {
ATOM__NET_WM_ICON,
ATOM__NET_WM_STATE,
ATOM__NET_WM_STATE_FULLSCREEN,
ATOM__NET_SUPPORTED,
ATOM_COUNT
};