scene: add wlr_scene_node_toggle

This allows compositors to easily enable or disable a scene-graph node.
This can be used to show/hide a surface when the xdg_surface is
mapped/unmapped.

1 files changed, 6 insertions, 0 deletions

diff --git a/include/wlr/types/wlr_scene.h b/include/wlr/types/wlr_scene.h
index 953b1b87..b5690575 100644
--- a/include/wlr/types/wlr_scene.h
+++ b/include/wlr/types/wlr_scene.h
@@ -35,6 +35,7 @@ struct wlr_scene_node_state {
 
 	struct wl_list children; // wlr_scene_node_state.link
 
+	bool enabled;
 	int x, y; // relative to parent
 };
 
@@ -69,6 +70,11 @@ struct wlr_scene_surface {
  */
 void wlr_scene_node_destroy(struct wlr_scene_node *node);
 /**
+ * Enable or disable this node. If a node is disabled, all of its children are
+ * implicitly disabled as well.
+ */
+void wlr_scene_node_set_enabled(struct wlr_scene_node *node, bool enabled);
+/**
  * Set the position of the node relative to its parent.
  */
 void wlr_scene_node_set_position(struct wlr_scene_node *node, int x, int y);