SceneBuilder class Null safety

Builds a Scene containing the given visuals.

A Scene can then be rendered using FlutterView.render.

To draw graphical operations onto a Scene, first create a Picture using a PictureRecorder and a Canvas, and then add it to the scene using addPicture.

Constructors

SceneBuilder()
Creates an empty SceneBuilder object.

Properties

hashCode int
The hash code for this object. [...]
read-only, inherited
runtimeType Type
A representation of the runtime type of the object.
read-only, inherited

Methods

addPerformanceOverlay(int enabledOptions, Rect bounds) → void
Adds an object to the scene that displays performance statistics. [...]
addPicture(Offset offset, Picture picture, {bool isComplexHint = false, bool willChangeHint = false}) → void
Adds a Picture to the scene. [...]
addPlatformView(int viewId, {Offset offset = Offset.zero, double width = 0.0, double height = 0.0}) → void
Adds a platform view (e.g an iOS UIView) to the scene. [...]
addRetained(EngineLayer retainedLayer) → void
Add a retained engine layer subtree from previous frames. [...]
addTexture(int textureId, {Offset offset = Offset.zero, double width = 0.0, double height = 0.0, bool freeze = false, FilterQuality filterQuality = FilterQuality.low}) → void
Adds a backend texture to the scene. [...]
build() Scene
Finishes building the scene. [...]
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed. [...]
inherited
pop() → void
Ends the effect of the most recently pushed operation. [...]
pushBackdropFilter(ImageFilter filter, {BlendMode blendMode = BlendMode.srcOver, BackdropFilterEngineLayer? oldLayer}) BackdropFilterEngineLayer
Pushes a backdrop filter operation onto the operation stack. [...]
pushClipPath(Path path, {Clip clipBehavior = Clip.antiAlias, ClipPathEngineLayer? oldLayer}) ClipPathEngineLayer
Pushes a path clip operation onto the operation stack. [...]
pushClipRect(Rect rect, {Clip clipBehavior = Clip.antiAlias, ClipRectEngineLayer? oldLayer}) ClipRectEngineLayer
Pushes a rectangular clip operation onto the operation stack. [...]
pushClipRRect(RRect rrect, {Clip clipBehavior = Clip.antiAlias, ClipRRectEngineLayer? oldLayer}) ClipRRectEngineLayer
Pushes a rounded-rectangular clip operation onto the operation stack. [...]
pushColorFilter(ColorFilter filter, {ColorFilterEngineLayer? oldLayer}) ColorFilterEngineLayer
Pushes a color filter operation onto the operation stack. [...]
pushImageFilter(ImageFilter filter, {ImageFilterEngineLayer? oldLayer}) ImageFilterEngineLayer
Pushes an image filter operation onto the operation stack. [...]
pushOffset(double dx, double dy, {OffsetEngineLayer? oldLayer}) OffsetEngineLayer
Pushes an offset operation onto the operation stack. [...]
pushOpacity(int alpha, {Offset? offset = Offset.zero, OpacityEngineLayer? oldLayer}) OpacityEngineLayer
Pushes an opacity operation onto the operation stack. [...]
pushPhysicalShape({required Path path, required double elevation, required Color color, Color? shadowColor, Clip clipBehavior = Clip.none, PhysicalShapeEngineLayer? oldLayer}) PhysicalShapeEngineLayer
Pushes a physical layer operation for an arbitrary shape onto the operation stack. [...]
pushShaderMask(Shader shader, Rect maskRect, BlendMode blendMode, {ShaderMaskEngineLayer? oldLayer, FilterQuality filterQuality = FilterQuality.low}) ShaderMaskEngineLayer
Pushes a shader mask operation onto the operation stack. [...]
pushTransform(Float64List matrix4, {TransformEngineLayer? oldLayer}) TransformEngineLayer
Pushes a transform operation onto the operation stack. [...]
setCheckerboardOffscreenLayers(bool checkerboard) → void
Sets whether the compositor should checkerboard layers that are rendered to offscreen bitmaps. [...]
setCheckerboardRasterCacheImages(bool checkerboard) → void
Sets whether the raster cache should checkerboard cached entries. This is only useful for debugging purposes. [...]
setRasterizerTracingThreshold(int frameInterval) → void
Sets a threshold after which additional debugging information should be recorded. [...]
toString() String
A string representation of this object. [...]
inherited

Operators

operator ==(Object other) bool
The equality operator. [...]
inherited