ArcLabelDecorator<D> 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.
- Implementers
Constructors
- ArcLabelDecorator({TextStyleSpec? insideLabelStyleSpec, TextStyleSpec? outsideLabelStyleSpec, ArcLabelLeaderLineStyleSpec? leaderLineStyleSpec, ArcLabelPosition labelPosition = _defaultLabelPosition, int labelPadding = _defaultLabelPadding, bool showLeaderLines = _defaultShowLeaderLines, Color? leaderLineColor})
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 arcRendererelement, ArcLabelPosition labelPosition) → ArcLabelPosition -
decorate(
List< ArcRendererElementList< arcElementsList, ChartCanvas canvas, GraphicsFactory graphicsFactory, {required Rectangle<D> >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