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-onlyinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
read-onlyinherited
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