ChartResponsiveMixin<T extends StatefulWidget> mixin

Mixin providing responsive behavior for chart widgets.

This mixin provides:

  • Device-aware padding calculation
  • Scaled font sizes based on device and text accessibility settings
  • WCAG-compliant touch targets (minimum 44-48dp)
  • Responsive marker and stroke sizes

Example usage:

class _MyChartState extends State<MyChart>
    with ChartResponsiveMixin {

  @override
  Widget build(BuildContext context) {
    return LayoutBuilder(
      builder: (context, constraints) {
        final responsiveConfig = getResponsiveConfig(constraints);
        final padding = getResponsivePadding(context, constraints);
        final fontSize = getScaledFontSize(context, 11.0);
        // ... use responsive values
      },
    );
  }
}
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
clearResponsiveCache() → void
Clears cached configuration.
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.
override
getDeviceClass(BoxConstraints constraints) → DeviceClass
Gets the current device class.
getHitTestRadius(BuildContext context, BoxConstraints constraints, {double? baseRadius}) → double
Gets WCAG-compliant hit test radius.
getMarkerSize(BuildContext context, BoxConstraints constraints, {double? baseSize}) → double
Gets responsive marker size.
getMaxAxisLabels(BoxConstraints constraints, {bool isXAxis = true}) → int
Gets maximum number of axis labels for current width.
getResponsiveConfig(BoxConstraints constraints) → ResponsiveChartConfig
Gets the responsive configuration based on constraints.
getResponsivePadding(BuildContext context, BoxConstraints constraints, {EdgeInsets? override}) → EdgeInsets
Gets responsive padding based on device class and density.
getScaledFontSize(BuildContext context, double baseSize, {double? minSize, double? maxScale}) → double
Gets scaled font size for labels.
getStrokeWidth(BuildContext context, BoxConstraints constraints, {double? baseWidth}) → double
Gets responsive stroke width.
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
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

Operators

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