Struct VideoLayer 

pub struct VideoLayer { /* private fields */ }

A layer that draws a video as part of the picture: Flutter’s TextureLayer and Chromium’s cc::VideoLayer, over the reader itself in place of a texture id or a frame provider.

A leaf, like a picture layer, retained with its ancestors like any other: it holds the reader, never a frame, and whoever draws the scene takes the frame then.

Implementations

impl VideoLayer

pub fn new( app: &mut App, reader: Arc<dyn VideoFrameReader>, rect: Rect, ) -> Handle<VideoLayer>

A layer drawing reader’s frames into rect.

pub fn reader(self: Handle<Self>, app: &App) -> &Arc<dyn VideoFrameReader>

pub fn rect(self: Handle<Self>, app: &App) -> Rect

Trait Implementations

impl Layer for VideoLayer

fn layer_data(self: Handle<Self>, app: &App) -> &LayerData

Dart’s base-class fields, held under the field layer ([layer_accessors!]).

fn layer_data_mut(self: Handle<Self>, app: &mut App) -> &mut LayerData

See layer_data.

fn add_to_scene(self: Handle<Self>, app: &mut App, builder: &mut SceneBuilder)

Override this method to upload this layer to the engine.

fn find_annotations( self: Handle<Self>, _app: &App, _result: &mut AnnotationSearch, _local_position: Offset, _only_first: bool, ) -> bool

Search this layer and its subtree for annotations of the searched type at the location described by local_position.

const AS_CONTAINER: Option<fn() -> &'static ContainerLayerVTable> = None

The container table when this type extends ContainerLayer; layer_accessors!(container) sets it. Dart’s layer is ContainerLayer.

fn supports_rasterization(self: Handle<Self>, app: &App) -> bool

Whether or not this layer, or any child layers, can be rasterized with Scene.toImage.

fn describe_clip_bounds(self: Handle<Self>, app: &App) -> Option<Rect>

Describes the clip that would be applied to contents of this layer, if any.

fn always_needs_add_to_scene(self: Handle<Self>, app: &App) -> bool

Subclasses may override this to true to disable retained rendering.

fn dispose(self: Handle<Self>, app: &mut App)

Clears any retained resources that this layer holds.

fn attach(self: Handle<Self>, app: &mut App, owner: HandleId)

Mark this layer as attached to the given owner.

fn detach(self: Handle<Self>, app: &mut App)

Mark this layer as detached from its owner.

fn redepth_children(self: Handle<Self>, app: &mut App)

Adjust the depth of this node’s children, if any.

fn fire_composition_callbacks( self: Handle<Self>, app: &mut App, include_children: bool, )

Dart’s _fireCompositionCallbacks; ContainerLayer recurses into its children.