SliderComponentShape class abstract
Base class for slider thumb, thumb overlay, and value indicator shapes.
Create a subclass of this if you would like a custom shape.
All shapes are painted to the same canvas and ordering is important. The overlay is painted first, then the value indicator, then the thumb.
The thumb painting can be skipped by specifying noThumb for SliderThemeData.thumbShape.
The overlay painting can be skipped by specifying noOverlay for SliderThemeData.overlayShape.
See also:
- RoundSliderThumbShape, which is the default Slider's thumb shape that paints a solid circle.
- RoundSliderOverlayShape, which is the default Slider and RangeSlider's overlay shape that paints a transparent circle.
- PaddleSliderValueIndicatorShape, which is the default Slider's value indicator shape that paints a custom path with text in it.
Constructors
- SliderComponentShape()
-
This abstract const constructor enables subclasses to provide
const constructors so that they can be used in const expressions.
const
Properties
- hashCode → int
-
The hash code for this object.
no setterinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
getPreferredSize(
bool isEnabled, bool isDiscrete) → Size - Returns the preferred size of the shape, based on the given conditions.
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
paint(
PaintingContext context, Offset center, {required Animation< double> activationAnimation, required Animation<double> enableAnimation, required bool isDiscrete, required TextPainter labelPainter, required RenderBox parentBox, required SliderThemeData sliderTheme, required TextDirection textDirection, required double value, required double textScaleFactor, required Size sizeWithOverflow}) → void - Paints the shape, taking into account the state passed to it.
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited
Static Properties
- noOverlay → SliderComponentShape
-
Special instance of SliderComponentShape to skip the overlay drawing.
final
- noThumb → SliderComponentShape
-
Special instance of SliderComponentShape to skip the thumb drawing.
final