Struct freya_testing::prelude::Compositor

pub struct Compositor { /* private fields */ }

Implementations

impl Compositor

pub fn get_drawing_area( node_id: EntityId, layout: &Torin<EntityId>, rdom: &RealDom<CustomAttributeValues>, scale_factor: f32, ) -> Option<Rect<f32, Measure>>

pub fn with_utils<T>( node_id: EntityId, layout: &Torin<EntityId>, rdom: &RealDom<CustomAttributeValues>, run: impl FnOnce(NodeRef<'_, CustomAttributeValues>, ElementWithUtils, &LayoutNode) -> T, ) -> Option<T>

pub fn run<'a>( &mut self, dirty_nodes: &mut CompositorDirtyNodes, dirty_area: &mut CompositorDirtyArea, cache: &mut CompositorCache, layers: &'a Layers, dirty_layers: &'a mut Layers, layout: &Torin<EntityId>, rdom: &RealDom<CustomAttributeValues>, scale_factor: f32, ) -> &'a Layers

The compositor runs from the bottom layers to the top and viceversa to check what Nodes might be affected by the dirty area. How a Node is checked is by calculating its drawing area which consists of its layout area plus any possible outer effect such as shadows and borders. Calculating the drawing area might get expensive so we cache them in the cached_areas map to make the second layers run faster (top to bottom). In addition to that, nodes that have already been united to the dirty area are removed from the running_layers to avoid being checked again at the second layers (top to bottom).

pub fn reset(&mut self)

Reset the compositor, thus causing a full render in the next frame.

Trait Implementations

impl Debug for Compositor

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl Default for Compositor

fn default() -> Compositor

Returns the “default value” for a type.