+
+gboolean stacking_occluded(ObClient *client, ObClient *sibling)
+{
+ GList *it;
+ gboolean obscured = FALSE;
+ gboolean found = FALSE;
+
+ /* no need for any looping in this case */
+ if (sibling && client->layer != sibling->layer)
+ return obscured;
+
+ for (it = stacking_list; it; it = g_list_next(it))
+ if (WINDOW_IS_CLIENT(it->data)) {
+ ObClient *c = it->data;
+ if (found) {
+ if (sibling != NULL) {
+ if (c == sibling) {
+ obscured = TRUE;
+ break;
+ }
+ }
+ else if (c->layer == client->layer) {
+ obscured = TRUE;
+ break;
+ }
+ else if (c->layer > client->layer)
+ break; /* we past its layer */
+ }
+ else if (c == client)
+ found = TRUE;
+ }
+ return obscured;
+}