TwoDirectionalSlider class

A widget that allows interactive two-directional sliding gestures.

The TwoDirectionalSlider widget wraps a child widget and allows users to perform sliding gestures both vertically and horizontally. It can be configured with callbacks to notify the parent widget about the changes in the vertical and horizontal values.

The vertical sliding gesture is handled through the onVerticalChanged callback, which receives a double value representing the current vertical position. The verticalDivisions property can be used to discretize the vertical values into a specified number of divisions.

The horizontal sliding gesture is handled through the onHorizontalChanged callback, which receives a double value representing the current horizontal position. The horizontalDivisions property can be used to discretize the horizontal values into a specified number of divisions.

Example usage:

TwoDirectionalSlider(
  onVerticalChanged: (value) {
    // Handle vertical value changes
  },
  onHorizontalChanged: (value) {
    // Handle horizontal value changes
  },
  child: Container(
    // Child widget
  ),
)
Inheritance

Constructors

TwoDirectionalSlider({Key? key, required Widget child, double initialVerticalValue = 0.0, double initialHorizontalValue = 0.0, ValueChanged<double>? onVerticalChangeStart, ValueChanged<double>? onVerticalChanged, ValueChanged<double>? onVerticalChangeEnd, int? verticalDivisions, ValueChanged<double>? onHorizontalChangeStart, ValueChanged<double>? onHorizontalChanged, ValueChanged<double>? onHorizontalChangeEnd, int? horizontalDivisions})
Creates a two-directional slider.
const

Properties

child → Widget
The child widget wrapped by the slider.
final
hashCode → int
The hash code for this object.
no setterinherited
horizontalDivisions → int?
The number of divisions to discretize the horizontal values.
final
initialHorizontalValue → double
The initial horizontal drag value.
final
initialVerticalValue → double
The initial vertical drag value.
final
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
onHorizontalChanged → ValueChanged<double>?
Called when the horizontal value changes.
final
onHorizontalChangeEnd → ValueChanged<double>?
Called when the horizontal value stops changing.
final
onHorizontalChangeStart → ValueChanged<double>?
Called when the horizontal value starts changing.
final
onVerticalChanged → ValueChanged<double>?
Called when the vertical value changes.
final
onVerticalChangeEnd → ValueChanged<double>?
Called when the vertical value stops changing.
final
onVerticalChangeStart → ValueChanged<double>?
Called when the vertical value starts changing.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
verticalDivisions → int?
The number of divisions to discretize the vertical values.
final

Methods

createElement() → StatefulElement
Creates a StatefulElement to manage this widget's location in the tree.
inherited
createState() → State<TwoDirectionalSlider>
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