Struct OffsetLayer 

pub struct OffsetLayer { /* private fields */ }

Flutter’s concrete OffsetLayer; the bodies are OffsetLayerMixin.

Implementations

impl OffsetLayer

pub fn new(app: &mut App, offset: Offset) -> Handle<OffsetLayer>

Creates an offset layer.

By default, offset is zero. It must be set before the compositing phase of the pipeline.

Trait Implementations

impl ContainerLayer for OffsetLayer

const AS_OFFSET: Option<fn() -> &'static OffsetLayerVTable>

The offset table when this type extends OffsetLayer; container_layer_accessors!(offset) sets it. Dart’s layer is OffsetLayer.

fn container_layer_data(self: Handle<Self>, app: &App) -> &ContainerLayerData

Mixin field access.

fn container_layer_data_mut( self: Handle<Self>, app: &mut App, ) -> &mut ContainerLayerData

See container_layer_data.

fn apply_transform( self: Handle<Self>, app: &App, child: Option<AnyLayer>, transform: &mut Matrix4, )

Applies the transform that would be applied when compositing the given child to the given matrix.

fn as_container_layer(self: Handle<Self>) -> AnyContainerLayer

Dart’s implicit upcast of a concrete layer to ContainerLayer.

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

ContainerLayer._fireCompositionCallbacks.

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

ContainerLayer.supportsRasterization.

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

ContainerLayer.dispose.

fn find_annotations( self: Handle<Self>, app: &App, result: &mut AnnotationSearch, local_position: Offset, only_first: bool, ) -> bool

ContainerLayer.findAnnotations.

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

ContainerLayer.attach.

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

ContainerLayer.detach.

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

ContainerLayer.redepthChildren.

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

ContainerLayer.addToScene.

impl Layer for OffsetLayer

const AS_CONTAINER: Option<fn() -> &'static ContainerLayerVTable>

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

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

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

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 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.

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

Override this method to upload this layer to the engine.

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

Dart’s _fireCompositionCallbacks; ContainerLayer recurses into its children.

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.

impl OffsetLayerMixin for OffsetLayer

fn offset_layer_data(self: Handle<Self>, app: &App) -> &OffsetLayerData

Mixin field access.

fn offset_layer_data_mut( self: Handle<Self>, app: &mut App, ) -> &mut OffsetLayerData

See offset_layer_data.

fn as_offset_layer(self: Handle<Self>) -> AnyOffsetLayer

Dart’s implicit upcast of a concrete layer to OffsetLayer.

fn offset(self: Handle<Self>, app: &App) -> Offset

Offset from parent in the parent’s coordinate system.

fn set_offset(self: Handle<Self>, app: &mut App, value: Offset)

See offset.

fn find_annotations( self: Handle<Self>, app: &App, result: &mut AnnotationSearch, local_position: Offset, only_first: bool, ) -> bool

OffsetLayer.findAnnotations.

fn apply_transform( self: Handle<Self>, app: &App, child: Option<AnyLayer>, transform: &mut Matrix4, )

OffsetLayer.applyTransform.

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

OffsetLayer.addToScene.