Struct TransformLayer 

pub struct TransformLayer { /* private fields */ }

A composited layer that applies a given transformation matrix to its children.

This class inherits from OffsetLayer to make it one of the layers that can be used at the root of a RenderObject hierarchy.

Implementations

impl TransformLayer

pub fn new(app: &mut App) -> Handle<TransformLayer>

Creates a transform layer.

The transform and offset properties must be non-null before the compositing phase of the pipeline.

pub fn transform(self: Handle<Self>, app: &App) -> Option<Matrix4>

The matrix to apply.

The scene must be explicitly recomposited after this property is changed (as described at Layer).

This transform is applied before offset, if both are set.

The transform property must be non-null before the compositing phase of the pipeline.

pub fn set_transform(self: Handle<Self>, app: &mut App, value: Matrix4)

See transform.

Trait Implementations

impl ContainerLayer for TransformLayer

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 TransformLayer

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 TransformLayer

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.