PlainKeyPainter class

Paints the plain-theme key face: a rounded-rect fill (and optional outline) with the hover and pressed state layers, plus the long-press radial fill (motion brief §2.2.4, §4.1, §4.4).

The press scale is applied outside the painter (a transform around the face and label), so this only paints colour. It repaints on every KeyFaceMotion channel without rebuilding any widget.

Inheritance
Available extensions

Constructors

PlainKeyPainter({required KeyFaceMotion motion, required KeyFaceSpec spec})

Properties

hashCode → int
The hash code for this object.
no setterinherited
keyFaceDelegate → CustomPainter

Available on CustomPainter, provided by the LiveKeyFacePainterAccess extension

The renderer's painter behind a LiveKeyFacePainter (this painter otherwise).
no setter
motion → KeyFaceMotion
The key's animation channels.
final
overlayOpacity → double
State-layer opacity: pressed replaces hover (M3 state layers).
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
spec → KeyFaceSpec
Colours and shape.
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
shapeFor(Size size) → RRect
The key's outline for size.
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 PlainKeyPainter 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