SheenBandSlider class Music

One band of an equaliser: a vertical slider in decibels with its centre at 0 dB, the value above and the band's name below. The fill grows from the centre up (boost) or down (cut). A screen reader moves it 1 dB at a time.

Row(children: [
  for (final b in bands)
    Expanded(child: SheenBandSlider(label: b.name, value: b.gain, onChanged: (v) => eq.set(b, v))),
])
Inheritance

Constructors

SheenBandSlider({Key? key, required String label, required double value, double min = -12, double max = 12, ValueChanged<double>? onChanged, ValueChanged<double>? onChangeEnd})
A band called label at value dB.
const

Properties

hashCode → int
The hash code for this object.
no setterinherited
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
label → String
The band's name ("Bass").
final
max → double
The highest gain.
final
min → double
The lowest gain.
final
onChanged → ValueChanged<double>?
Called while it moves.
final
onChangeEnd → ValueChanged<double>?
Called when a drag ends.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
value → double
The gain in dB.
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