TermosSlider class

Discrete tick strip with drag support: equal-spaced notches with labels. At most kMaxDiscreteSteps positions — use evenStep when you want evenly spaced values from start to end.

Delegates rendering to TermosFloatingSlider so all sliders share the same draggable tick-strip appearance with morphing indicator.

Inheritance

• Object
• DiagnosticableTree
• Widget
• StatelessWidget
• TermosSlider

Constructors

TermosSlider({Key? key, required double value, required double start, required double end, required double step, required ValueChanged<double> onChanged, bool compact = true, String formatValue(double value)?})

const

Properties

compact → bool

final

end → double

final

formatValue → String Function(double value)?

Override label under each tick (defaults to defaultFormatValue).

final

hashCode → int

The hash code for this object.

no setter, inherited

key → Key?

Controls how one widget replaces another widget in the tree.

final, inherited

onChanged → ValueChanged<double>

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

start → double

final

step → double

final

value → double

final

Methods

build(BuildContext context) → Widget

Describes the part of the user interface represented by this widget.

override

createElement() → StatelessElement

Creates a StatelessElement to manage this widget's location in the tree.

inherited

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

Static Methods

defaultFormatValue(double value) → String

discreteValues({required double start, required double end, required double step}) → List<double>

Values that TermosSlider will render (length ≤ kMaxDiscreteSteps).

evenStep(double start, double end, {int maxSteps = kMaxDiscreteSteps}) → double

Step size for exactly maxSteps evenly spaced values from start to end inclusive. maxSteps is the number of discrete positions (including both endpoints). For the tick-strip TermosSlider, positions are capped by kMaxDiscreteSteps; evenStep itself allows larger maxSteps for computing step size used elsewhere.

snap(double value, double start, double end, double step) → double

Snaps value to the nearest discrete position for the given range.

Constants

kMaxDiscreteSteps → const int

Maximum number of discrete positions (inclusive of endpoints when step fits).