Function hit_testable 

pub fn hit_testable(effectively_visible: bool, flags: ItemFlags) -> bool

Whether an entry takes part in pointer hit-testing at all.

The single home of two flag contracts that used to be written nowhere and honoured nowhere:

• IS_VISIBLE — “the item is neither painted nor hit-tested”. effectively_visible is Scene::is_effectively_visible, so a visible item under a hidden ancestor is excluded too.
• IS_ENABLED — “disabled items are still painted but pass clicks through to items beneath”.

Applied by Scene::item_at / items_at / item_at_in_view and by both of the SceneView’s per-layout snapshots, so the eager query and the dispatch path answer the same question.