ChartState<T> class

Main state of the charts. Painter will use this as state and it will format chart depending on options.

itemOptions Contains all modifiers for separate bar item

behaviour How chart reacts and sizes itself

foregroundDecorations and backgroundDecorations decorations that aren't connected directly to the chart but can show important info (Axis, target line...)

More different decorations can be added by extending DecorationPainter

Constructors

ChartState({required ChartData<T> data, required ItemOptions itemOptions, ChartBehaviour behaviour = const ChartBehaviour(), List<DecorationPainter> backgroundDecorations = const <DecorationPainter>[], List<DecorationPainter> foregroundDecorations = const <DecorationPainter>[]})

Chart state constructor

ChartState.bar(ChartData<T> data, {required BarItemOptions itemOptions, ChartBehaviour behaviour = const ChartBehaviour(), List<DecorationPainter> backgroundDecorations = const <DecorationPainter>[], List<DecorationPainter> foregroundDecorations = const <DecorationPainter>[]})

Create bar chart with background grid decoration

factory

ChartState.line(ChartData<T> data, {required BubbleItemOptions itemOptions, ChartBehaviour behaviour = const ChartBehaviour(), List<DecorationPainter> backgroundDecorations = const <DecorationPainter>[], List<DecorationPainter> foregroundDecorations = const <DecorationPainter>[]})

Create line chart with foreground sparkline decoration and background grid decoration

factory

Properties

backgroundDecorations → List<DecorationPainter>

Decorations for chart background, the go below the items

final

behaviour → ChartBehaviour

ChartBehaviour define how chart behaves and how it should react

final

data → ChartData<T>

ChartData data that chart will show

final

dataRenderer → ChartDataRendererFactory<T?>

How is data rendered on the screen, by default it uses ChartLinearDataRenderer

final

defaultMargin ↔ EdgeInsets

Margin of chart drawing area where items are drawn.

getter/setter pair

defaultPadding ↔ EdgeInsets

Padding is used for decorations that want other decorations to be drawn on them. Unlike defaultMargin some decorations don't need to respect padding. Sometimes decorations paint over this padding.

getter/setter pair

foregroundDecorations → List<DecorationPainter>

Decorations for chart foreground, they are drawn last, and the go above items

final

hashCode → int

The hash code for this object.

no setter, inherited

itemOptions → ItemOptions

ItemOptions define how to draw that data points into items on chart. Subclasses you can use: BarItemOptions for bar-like items, BubbleItemOptions for bubble and dot items, WidgetItemOptions for any kind widget that you provide.

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited

Static Methods

lerp<T>(ChartState<T?> a, ChartState<T?> b, double t) → ChartState<T?>

For later in case charts will have to animate between states.