NeedlePointer class

Creates a needle pointer for RadialGauge.

 RadialGauge(
  needlePointer: [
    NeedlePointer(value: 30),
  ],
  track: RadialTrack(
    start: 0,
    end: 100,
  ),
 ),
Inheritance

Constructors

NeedlePointer({Key? key, required double value, LinearGradient? gradient, Color color = Colors.red, Color tailColor = Colors.red, double needleWidth = 40, double needleHeight = 300, ValueChanged<double>? onChanged, bool isInteractive = false, NeedleStyle needleStyle = NeedleStyle.gaugeNeedle, double tailRadius = 80})
Creates a needle pointer for RadialGauge.
const

Properties

color → Color
final
gradient → LinearGradient?
final
hashCode → int
The hash code for this object.
no setterinherited
isInteractive → bool
final
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
needleHeight → double
final
needleStyle → NeedleStyle
final
needleWidth → double
final
onChanged → ValueChanged<double>?
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
tailColor → Color
final
tailRadius → double
final
value → double
final

Methods

createElement() → LeafRenderObjectElement
RenderObjectWidgets always inflate to a RenderObjectElement subclass.
inherited
createRenderObject(BuildContext context) → RenderObject
Creates an instance of the RenderObject class that this RenderObjectWidget represents, using the configuration described by this RenderObjectWidget.
override
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
didUnmountRenderObject(covariant RenderObject renderObject) → void
A render object previously associated with this widget has been removed from the tree. The given RenderObject will be of the same type as returned by this object's createRenderObject.
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}) → 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
updateRenderObject(BuildContext context, covariant RenderNeedlePointer renderObject) → void
Copies the configuration described by this RenderObjectWidget to the given RenderObject, which will be of the same type as returned by this object's createRenderObject.
override

Operators

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