LiveSegmentationPainter class

Painter for rendering segmentation mask overlay on live camera feed.

When showAllClasses is true, classColors (indexed by class) must be supplied to colourize per-class pixels.

Inheritance

Constructors

LiveSegmentationPainter({required SegmentationMask mask, required Color maskColor, bool showAllClasses = false, bool mirrorHorizontally = false, List<Color> classColors = const <Color>[]})
Creates a painter for the given mask + styling.

Properties

classColors → List<Color>
Per-class colors used only when showAllClasses is true.
final
hashCode → int
The hash code for this object.
no setterinherited
mask → SegmentationMask
Mask to render.
final
maskColor → Color
Color used for single-class rendering.
final
mirrorHorizontally → bool
Whether to flip x-coordinates (match mirrored front-camera preview).
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
semanticsBuilder → SemanticsBuilderCallback?
Returns a function that builds semantic information for the picture drawn by this painter.
no setterinherited
showAllClasses → bool
When true, render all classes (each in its own classColors entry).
final

Methods

addListener(VoidCallback listener) → void
Register a closure to be notified when it is time to repaint.
inherited
hitTest(Offset position) → bool?
Called whenever a hit test is being performed on an object that is using this custom paint delegate.
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
paint(Canvas canvas, Size size) → void
Called whenever the object needs to paint. The given Canvas has its coordinate space configured such that the origin is at the top left of the box. The area of the box is the size of the size argument.
override
removeListener(VoidCallback listener) → void
Remove a previously registered closure from the list of closures that the object notifies when it is time to repaint.
inherited
shouldRebuildSemantics(covariant CustomPainter oldDelegate) → bool
Called whenever a new instance of the custom painter delegate class is provided to the RenderCustomPaint object, or any time that a new CustomPaint object is created with a new instance of the custom painter delegate class (which amounts to the same thing, because the latter is implemented in terms of the former).
inherited
shouldRepaint(covariant LiveSegmentationPainter old) → bool
Called whenever a new instance of the custom painter delegate class is provided to the RenderCustomPaint object, or any time that a new CustomPaint object is created with a new instance of the custom painter delegate class (which amounts to the same thing, because the latter is implemented in terms of the former).
override
toString() → String
A string representation of this object.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited