expo: Draw the current opened menu on top
When a menu is opened, it must be displayed over all other objects in
the scene, so that all its items are visible.
Handle this by drawing the menu object a second time, after all other
objects have been drawn. Draw all of the objects which are dependent
on the menu object.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/boot/scene_internal.h b/boot/scene_internal.h
index 2544c96..dc98ecd 100644
--- a/boot/scene_internal.h
+++ b/boot/scene_internal.h
@@ -161,6 +161,26 @@
void scene_menu_render(struct scene_obj_menu *menu);
/**
+ * scene_render_deps() - Render an object and its dependencies
+ *
+ * @scn: Scene to render
+ * @id: Object ID to render (or 0 for none)
+ * Returns: 0 if OK, -ve on error
+ */
+int scene_render_deps(struct scene *scn, uint id);
+
+/**
+ * scene_menu_render_deps() - Render a menu and its dependencies
+ *
+ * Renders the menu and all of its attached objects
+ *
+ * @scn: Scene to render
+ * @menu: Menu render
+ * Returns: 0 if OK, -ve on error
+ */
+int scene_menu_render_deps(struct scene *scn, struct scene_obj_menu *menu);
+
+/**
* scene_menu_calc_dims() - Calculate the dimensions of a menu
*
* Updates the width and height of the menu based on its contents