ArcLabelDecorator<D extends Object> class

Renders labels for arc renderers.

This decorator performs very basic label collision detection. If the y position of a label positioned outside collides with the previously drawn label (on the same side of the chart), then that label will be skipped.

Constructors

ArcLabelDecorator({TextStyleSpec? insideLabelStyleSpec, TextStyleSpec? outsideLabelStyleSpec, ArcLabelLeaderLineStyleSpec? leaderLineStyleSpec, ArcLabelPosition labelPosition = _defaultLabelPosition, int labelPadding = _defaultLabelPadding, bool showLeaderLines = _defaultShowLeaderLines})

Properties

hashCode → int
The hash code for this object.
no setterinherited
insideLabelStyleSpec → TextStyleSpec
Configures TextStyleSpec for labels placed inside the arcs.
final
labelPadding → int
Space before and after the label text.
final
labelPosition → ArcLabelPosition
Configures where to place the label relative to the arcs.
final
leaderLineStyleSpec → ArcLabelLeaderLineStyleSpec
Configures ArcLabelLeaderLineStyleSpec for leader lines for labels placed outside the arcs.
final
outsideLabelStyleSpec → TextStyleSpec
Configures TextStyleSpec for labels placed outside the arcs.
final
renderAbove → bool
Render the labels on top of series data.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
showLeaderLines → bool
Whether or not to draw leader lines for labels placed outside the arcs.
final

Methods

calculateLabelPosition(TextElement labelElement, TextStyle labelStyle, int insideArcWidth, int outsideArcWidth, ArcRendererElement<D> arcRendererElement, ArcLabelPosition labelPosition) → ArcLabelPosition
decorate(List<ArcRendererElementList<D>> arcElementsList, ChartCanvas canvas, GraphicsFactory graphicsFactory, {required Rectangle<num> drawBounds, required double animationPercent, bool rtl = false}) → void
detectOutsideLabelCollision(num labelY, bool labelLeftOfChart, num? previousOutsideLabelY, bool? previousLabelLeftOfChart) → bool
Detects whether the current outside label collides with the previous label.
getLabelRadius(ArcRendererElementList<D> arcElements) → double
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
toString() → String
A string representation of this object.
inherited
updateCollisionDetectionParams(List<Object> params) → void

Operators

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