// an X screen. may have multiple monitors, xinerama, etc
void
setup_screen()
{
int i;
Window w;
supporting = XCreateSimpleWindow(display, root, 0, 0, 1, 1, 0, 0, 0);
unsigned long pid = getpid();
// EWMH
XChangeProperty(display, root, netatoms[_NET_SUPPORTED], XA_ATOM, 32,
PropModeReplace, (unsigned char *) netatoms, NETATOMS);
// ewmh supporting wm
XChangeProperty(display, root, netatoms[_NET_SUPPORTING_WM_CHECK],
XA_WINDOW, 32, PropModeReplace, (unsigned char *) &supporting, 1);
XChangeProperty(display, supporting,
netatoms[_NET_SUPPORTING_WM_CHECK], XA_WINDOW, 32, PropModeReplace,
(unsigned char *) &supporting, 1);
XChangeProperty(display, supporting, netatoms[_NET_WM_NAME], XA_STRING,
8, PropModeReplace, (const unsigned char *) "GoomwWM", 6);
XChangeProperty(display, supporting, netatoms[_NET_WM_PID],
XA_CARDINAL, 32, PropModeReplace, (unsigned char *) &pid, 1);
// become the window manager here
XSelectInput(display, root,
StructureNotifyMask | SubstructureRedirectMask |
SubstructureNotifyMask);
// setup any existing windows
winlist *l = window_children();
winlist_ascend(l, i, w) {
wincache *cache = allocate_clear(sizeof(wincache));
winlist_append(windows, w, cache);
client *c = client_create(w);
if (c && c->manage && (c->visible
|| client_get_wm_state(c) == IconicState)) {
window_select(c->window);
winlist_append(c->
visible ? windows_activated : windows_shaded,
c->window, NULL);
client_full_review(c);
}
}
// XGetWindowAttributes with caching
XWindowAttributes* window_get_attributes(Window w)
{
int idx = winlist_find(cache_xattr, w);
if (idx < 0)
{
XWindowAttributes *cattr = allocate(sizeof(XWindowAttributes));
if (XGetWindowAttributes(display, w, cattr))
{
winlist_append(cache_xattr, w, cattr);
return cattr;
}
free(cattr);
return NULL;
}
return cache_xattr->data[idx];
}
// top-level windows, visible or not. DOES include non-managable docks/panels
winlist* window_children()
{
winlist *l = winlist_new();
unsigned int nwins; int i; Window w1, w2, *wins;
if (XQueryTree(display, root, &w1, &w2, &wins, &nwins) && wins)
{
for (i = 0; i < nwins; i++)
{
XWindowAttributes *attr = window_get_attributes(wins[i]);
if (attr && attr->override_redirect == False && (attr->map_state == IsUnmapped || attr->map_state == IsViewable))
winlist_append(l, wins[i], NULL);
}
}
if (wins) XFree(wins);
return l;
}
// top-level, visible windows. DOES include non-managable docks/panels
winlist* windows_in_play()
{
if (cache_inplay->len) return cache_inplay;
unsigned int nwins; int i; Window w1, w2, *wins;
if (XQueryTree(display, root, &w1, &w2, &wins, &nwins) && wins)
{
for (i = 0; i < nwins; i++)
{
XWindowAttributes *attr = window_get_attributes(wins[i]);
if (attr && attr->override_redirect == False && attr->map_state == IsViewable)
winlist_append(cache_inplay, wins[i], NULL);
}
}
if (wins) XFree(wins);
return cache_inplay;
}
