+
+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;
+}
+
+void stacking_restack_request(ObClient *client, ObClient *sibling,
+ gint detail)
+{
+ switch (detail) {
+ case Below:
+ ob_debug("Restack request Below for client %s sibling %s\n",
+ client->title, sibling ? sibling->title : "(all)");
+ /* just lower it */
+ stacking_lower(CLIENT_AS_WINDOW(client));
+ break;
+ case BottomIf:
+ ob_debug("Restack request BottomIf for client %s sibling "
+ "%s\n",
+ client->title, sibling ? sibling->title : "(all)");
+ /* if this client occludes sibling (or anything if NULL), then
+ lower it to the bottom */
+ if (stacking_occluded(sibling, client))
+ stacking_lower(CLIENT_AS_WINDOW(client));
+ break;
+ case Above:
+ ob_debug("Restack request Above for client %s sibling %s\n",
+ client->title, sibling ? sibling->title : "(all)");
+ /* activate it rather than just focus it */
+ client_activate(client, FALSE, FALSE);
+ break;
+ case TopIf:
+ ob_debug("Restack request TopIf for client %s sibling %s\n",
+ client->title, sibling ? sibling->title : "(all)");
+ if (stacking_occluded(client, sibling))
+ /* activate it rather than just focus it */
+ client_activate(client, FALSE, FALSE);
+ case Opposite:
+ ob_debug("Restack request Opposite for client %s sibling "
+ "%s\n",
+ client->title, sibling ? sibling->title : "(all)");
+ if (stacking_occluded(client, sibling))
+ /* activate it rather than just focus it */
+ client_activate(client, FALSE, FALSE);
+ else if (stacking_occluded(sibling, client))
+ stacking_lower(CLIENT_AS_WINDOW(client));
+ }
+}