LightnessSliderTrack class

A custom slider track for the opacity slider.

Has rounded edges and a background image that repeats to show the common image pattern used as background on images that has transparency. It results in a nice effect where we can better judge visually how transparent the current opacity value is directly on the slider.

Inheritance

Constructors

LightnessSliderTrack({required Color color, required TextDirection textDirection, double thumbRadius = lightnessThumbRadius})
Constructor for the opacity slider track.

Properties

color → Color
Currently selected color.
final
hashCode → int
The hash code for this object.
no setterinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
textDirection → TextDirection
final
thumbRadius → double
The radius of the adjustment thumb on the opacity slider track.
final

Methods

getPreferredRect({required RenderBox parentBox, Offset offset = Offset.zero, required SliderThemeData sliderTheme, bool isEnabled = false, bool isDiscrete = false}) → Rect
Returns a rect that represents the track bounds that fits within the Slider.
override
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
paint(PaintingContext context, Offset offset, {required RenderBox parentBox, required SliderThemeData sliderTheme, required Animation<double> enableAnimation, required TextDirection textDirection, required Offset thumbCenter, Offset? secondaryOffset, bool isDiscrete = false, bool isEnabled = false}) → void
Paints the track shape based on the state passed to it.
override
toString() → String
A string representation of this object.
inherited

Operators

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