DumbbellChart class

A dumbbell chart widget.

Displays two connected points per category, useful for showing before/after comparisons or changes between two values.

Example:

DumbbellChart(
  data: DumbbellChartData(
    items: [
      DumbbellItem(label: '2020', startValue: 30, endValue: 50),
      DumbbellItem(label: '2021', startValue: 40, endValue: 65),
      DumbbellItem(label: '2022', startValue: 35, endValue: 70),
    ],
  ),
)
Inheritance

Constructors

DumbbellChart({required DumbbellChartData data, Key? key, ChartController? controller, ChartAnimation? animation, ChartInteractions interactions = const ChartInteractions(), TooltipConfig tooltip = const TooltipConfig(), void onItemTap(int index, DumbbellItem item)?, EdgeInsets padding = const EdgeInsets.all(24)})
const

Properties

animation → ChartAnimation?
final
controller → ChartController?
final
data → DumbbellChartData
final
hashCode → int
The hash code for this object.
no setterinherited
interactions → ChartInteractions
final
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
onItemTap → void Function(int index, DumbbellItem item)?
final
padding → EdgeInsets
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
tooltip → TooltipConfig
final

Methods

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