ElementsPainter class abstract base

Inheritance

Constructors

ElementsPainter(ElementsProps? properties, double aspectRatio)
const

Properties

aspectRatio → double
final
hashCode → int
The hash code for this object.
no setterinherited
properties → ElementsProps
no setter
property → ElementsProperties
no setter
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

Methods

addListener(VoidCallback listener) → void
Register a closure to be notified when it is time to repaint.
inherited
calculateAspectRatio(Size size) → double
calculateCenter(Size size) → Offset
calculateSize(Size size) → double
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) → FlagParentBounds?
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
paintChild(Canvas canvas, Rect parentBounds, ElementsProperties? child) → FlagParentBounds?
paintCreator([Color? color]) → Paint
painter(Shape child) → ElementsPainter Function(ElementsProps?, double)
paintFlagElements(Canvas canvas, Size size) → FlagParentBounds?
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
shapeType<T extends Shape>([Shape? shape]) → T?
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).
override
shouldRepaint(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).
override
toString() → String
A string representation of this object.
inherited

Operators

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