ScrollerPainter class abstract

This is the painter for animating shapes moving around the screen.

Inheritance
Implementers

Constructors

ScrollerPainter({required Animation<double> animation, required ScrollerPainterData data})
Creates a ScrollerPainter object.

Properties

animation → Animation<double>
The animation that controls the painter.
finalinherited
data → ScrollerPainterData
The data needed to paint a scroller background.
final
hashCode → int
The hash code for this object.
no setterinherited
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
getShiftedOuterLoopProgressor(double shapeDimension, double spaceBetweenShapes) → double
Used as the loop incrementor for the outer loop of the calculations for drawing shapes with the ScrollerShapeOffset.shift and ScrollerShapeOffset.shiftAndMesh arrangement.
hitTest(Offset position) → bool?
Called whenever a hit test is being performed on an object that is using this custom paint delegate.
inherited
isOffScreen(double x, double shapeDimension, double screenDimension) → bool
Whether or not the shape as any parts that are off screen.
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.
inherited
percentOffScreen(double x, double shapeDimension, double screenDimension) → double
The percentage of the shape that is off screen.
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
resizeShapesAlongHeight(Size shapeSize, double spaceBetweenShapes, Size canvasSize) → Map<MeasurementName, double>
This is used to resize the shapes and the space between the shapes to fit the screen width perfectly and proportionally.
resizeShapesAlongWidth(Size shapeSize, double spaceBetweenShapes, Size canvasSize) → Map<MeasurementName, double>
This is used to resize the shapes and the space between the shapes to fit the screen width perfectly and proportionally.
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 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