ChartEventHandler<T extends StatefulWidget> mixin

A mixin that provides event handling capabilities for chart widgets.

This mixin can be added to StatefulWidget states to handle pointer events with chart-specific coordinate transformations.

Superclass constraints

Properties

context → BuildContext
The location in the tree where this widget builds.
no setterinherited
hashCode → int
The hash code for this object.
no setterinherited
mounted → bool
Whether this State object is currently in a tree.
no setterinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
widget → T
The current configuration.
no setterinherited

Methods

activate() → void
Called when this object is reinserted into the tree after having been removed via deactivate.
inherited
build(BuildContext context) → Widget
Describes the part of the user interface represented by this widget.
inherited
createChartEvent(PointerEvent event) → ChartPointerEvent
Creates a ChartPointerEvent from a PointerEvent.
deactivate() → void
Called when this object is removed from the tree.
inherited
debugFillProperties(DiagnosticPropertiesBuilder properties) → void
Add additional properties associated with the node.
inherited
didChangeDependencies() → void
Called when a dependency of this State object changes.
inherited
didUpdateWidget(covariant T oldWidget) → void
Called whenever the widget configuration changes.
inherited
dispose() → void
Called when this object is removed from the tree permanently.
inherited
initState() → void
Called when this object is inserted into the tree.
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
onPointerCancel(ChartPointerEvent event) → void
Called when a pointer is cancelled.
onPointerDown(ChartPointerEvent event) → void
Called when a pointer is pressed down.
onPointerEnter(ChartPointerEvent event) → void
Called when a pointer enters the chart area.
onPointerExit(ChartPointerEvent event) → void
Called when a pointer exits the chart area.
onPointerMove(ChartPointerEvent event) → void
Called when a pointer moves within the chart area.
onPointerScroll(ChartPointerEvent event) → void
Called when a scroll/wheel event occurs.
onPointerUp(ChartPointerEvent event) → void
Called when a pointer is released.
reassemble() → void
Called whenever the application is reassembled during debugging, for example during hot reload.
inherited
setState(VoidCallback fn) → void
Notify the framework that the internal state of this object has changed.
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
toStringShort() → String
A brief description of this object, usually just the runtimeType and the hashCode.
inherited
transformPosition(Offset localPosition) → Offset
Transforms a local position to chart coordinates. Override this to provide custom coordinate transformation.
wrapWithEventListeners(Widget child) → Widget
Wraps a child widget with event listeners.

Operators

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