CircularSlider class

CircularSlider widget

References: https://www.youtube.com/watch?v=IP0Nn9f2yJs https://github.com/JideGuru/youtube_videos/blob/master/rainbow_circular_slider/lib/views/circular_slider.dart

Inheritance

Constructors

CircularSlider.new({Key? key, required double value, double min = 0.0, double max = 1.0, required KnobBuilder knobBuilder, required void onChanged(double radian), int steps = 0, required double radius, double startAngle = 0.0, double endAngle = math.pi * 2.0, double offsetRadian = 0.0, CircularSliderTrack track = const CircularSliderTrack(color: defaultTrackColor, width: defaultStrokeWidth, strokeCap: StrokeCap.round, gradientMode: GradientMode.arc), List<CircularSliderSegment>? segments, List<CircularSliderMarker>? markers, List<CircularSliderNotchGroup>? notchGroups, double notchRingOffset = 0.0, Size knobSize = const Size.square(defaultKnobSize), double knobAlignment = 1.0, bool lockKnobRotation = false, bool showArrow = true, InteractionMode interactionMode = InteractionMode.both})
const

Properties

endAngle → double
in radians less than or equal to (pi * 2) startAngle must be less than endAngle
final
hashCode → int
The hash code for this object.
no setterinherited
interactionMode → InteractionMode
Control the value of the slider using track or knob or both
final
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
knobAlignment → double
Alignment of the knob 0 = Center of slider 1 = On the slider's track
final
knobBuilder → KnobBuilder
Builder for the control knob Provides the angle in radians
final
knobSize → Size
Size of the control knob
final
lockKnobRotation → bool
Tangentially locks the knob's rotation
final
markers → List<CircularSliderMarker>?
List of markers
final
max → double
The maximum value of the slider
final
min → double
The minimum value of the slider
final
notchGroups → List<CircularSliderNotchGroup>?
This requires steps to be greater than 0
final
notchRingOffset → double
Increase this to move the notches away from the center Decreasing brings them closer
final
offsetRadian → double
Adjust the rotation of the slider
final
onChanged → void Function(double radian)
Called when the slider's value changes
final
radius → double
The radius of the slider
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
segments → List<CircularSliderSegment>?
List of segments
final
showArrow → bool
Show the directional arrow at the end of the track
final
startAngle → double
in radians less than or equal to (pi * 2) startAngle must be less than endAngle
final
steps → int
The number of discrete steps within the range
final
track → CircularSliderTrack
Slider track parameters
final
value → double
Value between min and max
final

Methods

createElement() → StatefulElement
Creates a StatefulElement to manage this widget's location in the tree.
inherited
createState() → State<CircularSlider>
Creates the mutable state for this widget at a given location in the tree.
override
debugDescribeChildren() → List<DiagnosticsNode>
Returns a list of DiagnosticsNode objects describing this node's children.
inherited
debugFillProperties(DiagnosticPropertiesBuilder properties) → void
Add additional properties associated with the node.
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
toDiagnosticsNode({String? name, DiagnosticsTreeStyle? style}) → DiagnosticsNode
Returns a debug representation of the object that is used by debugging tools and by DiagnosticsNode.toStringDeep.
inherited
toString({DiagnosticLevel minLevel = DiagnosticLevel.info}) → String
A string representation of this object.
inherited
toStringDeep({String prefixLineOne = '', String? prefixOtherLines, DiagnosticLevel minLevel = DiagnosticLevel.debug, int wrapWidth = 65}) → String
Returns a string representation of this node and its descendants.
inherited
toStringShallow({String joiner = ', ', DiagnosticLevel minLevel = DiagnosticLevel.debug}) → String
Returns a one-line detailed description of the object.
inherited
toStringShort() → String
A short, textual description of this widget.
inherited

Operators

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