Function parent_scroll_clip_rects 

pub fn parent_scroll_clip_rects(
    main: &mut World,
    parents: &HashMap<Entity, Entity>,
) -> HashMap<Entity, (Vec2, Vec2)>

Returns the nearest clipping-ancestor rect (origin and size in window coordinates) for every entity.

• A clipping ancestor is one carrying a crate::input::Scroll component or a crate::components::Style with overflow_x or overflow_y set to crate::components::Overflow::Hidden.
• Entities without a clipping ancestor are absent from the returned map.