webrender::scene_building

Struct ScrollOffsetMapper

Source 
pub struct ScrollOffsetMapper {
    pub current_spatial_node: SpatialNodeIndex,
    pub current_offset: LayoutVector2D,
}
Expand description

Offsets primitives (and clips) by the external scroll offset supplied to scroll nodes.

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§current_spatial_node: SpatialNodeIndex§current_offset: LayoutVector2D

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impl ScrollOffsetMapper

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fn new() -> Self

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fn external_scroll_offset( &mut self, spatial_node_index: SpatialNodeIndex, spatial_tree: &SceneSpatialTree, ) -> LayoutVector2D

Return the accumulated external scroll offset for a spatial node. This caches the last result, which is the common case, or defers to the spatial tree to build the value.

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