LegendRenderer class

Renderer for chart legends.

Displays legend items with markers and labels, supporting multiple layouts and interactive toggling.

Implemented types

• ChartRenderer<LegendConfig>
• HitTestableRenderer

Mixed-in types

• RendererMixin<LegendConfig>

Constructors

LegendRenderer({required LegendConfig config, required List<LegendItem> items, void onItemTap(int index)?, TextCache? textCache})

Properties

config → LegendConfig

Configuration for this renderer.

no setter, override

hashCode → int

The hash code for this object.

no setter, inherited

items ↔ List<LegendItem>

getter/setter pair

needsRepaint → bool

no setter, inherited

onItemTap → void Function(int index)?

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

calculateInsets(Size availableSize) → EdgeInsets

Calculates the insets required by this renderer.

override

dispose() → void

Releases any cached resources.

override

hitTest(Offset point, Rect chartArea) → RendererHitResult

Performs hit testing at the given point.

override

markNeedsRepaint() → void

inherited

markPainted() → void

inherited

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

render(Canvas canvas, Size size, Rect chartArea) → void

Renders the component to the canvas.

override

toString() → String

A string representation of this object.

inherited

update(LegendConfig newConfig) → void

Updates the renderer configuration.

override

updateItems(List<LegendItem> newItems) → void

Updates the legend items.

Operators

operator ==(Object other) → bool

The equality operator.

inherited