LabelAnnotation class

A text label annotation at a specific position.

LabelAnnotation places text at specified data coordinates, useful for annotations, callouts, or highlighting specific data points.

Example usage:

LabelAnnotation(
  xScale: xScale,
  yScale: yScale,
  xValue: 50,
  yValue: 75,
  label: 'Peak Value',
  width: 400,
  height: 300,
)

Inheritance

Constructors

LabelAnnotation({Key? key, required dynamic xScale, required dynamic yScale, required dynamic xValue, required dynamic yValue, required String label, TextStyle? labelStyle, required double width, required double height, LabelAnnotationConfig config = const LabelAnnotationConfig(), LabelAnchor anchor = LabelAnchor.center, Offset offset = Offset.zero}): Creates a label annotation.
const

anchor → LabelAnchor: The anchor point for the label.
final
config → LabelAnnotationConfig: Configuration for the label.
final
hashCode → int: The hash code for this object.
no setterinherited
height → double: The height of the chart area.
final
key → Key?: Controls how one widget replaces another widget in the tree.
finalinherited
label → String: The label text.
final
labelStyle → TextStyle?: Text style for the label.
final
offset → Offset: Additional offset from the anchor position.
final
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited
width → double: The width of the chart area.
final
xScale → dynamic: The x-scale for positioning.
final
xValue → dynamic: The x data value.
final
yScale → dynamic: The y-scale for positioning.
final
yValue → dynamic: The y data value.
final

build(BuildContext context) → Widget: Describes the part of the user interface represented by this widget.
override
createElement() → StatelessElement: Creates a StatelessElement to manage this widget's location in the tree.
inherited
debugDescribeChildren() → List<DiagnosticsNode>: Returns a list of DiagnosticsNode objects describing this node's children.
inherited
debugFillProperties(DiagnosticPropertiesBuilder properties) → void: Add additional properties associated with the node.
inherited
noSuchMethod(Invocation invocation) → dynamic: Invoked when a nonexistent method or property is accessed.
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
toStringDeep({String prefixLineOne = '', String? prefixOtherLines, DiagnosticLevel minLevel = DiagnosticLevel.debug, int wrapWidth = 65}) → String: Returns a string representation of this node and its descendants.
inherited
toStringShallow({String joiner = ', ', DiagnosticLevel minLevel = DiagnosticLevel.debug}) → String: Returns a one-line detailed description of the object.
inherited
toStringShort() → String: A short, textual description of this widget.
inherited