Pointer class

A Pointer implements BasePointer that is used to add the shape pointer to the LinearGauge.

The LinearGauge takes a list of BasePointer as an input.

Note: The value of the pointer should be between the start and end value of the LinearGauge and if the value is null it takes the value specified in Linear Gauge

const LinearGauge(
   pointers: const [
     Pointer(
      value: 50.0,
      color: Colors.red,
      shape: PointerShape.circle,
   ),
  ],
),
Inheritance
Implemented types

Constructors

Pointer({Key? key, required double value, double height = 10.0, Color color = Colors.red, double width = 10.0, required PointerShape shape, bool showLabel = false, bool isInteractive = false, ValueChanged<double>? onChanged, QuarterTurns quarterTurns = QuarterTurns.zero, TextStyle labelStyle = const TextStyle(), PointerPosition pointerPosition = PointerPosition.center, PointerAlignment pointerAlignment = PointerAlignment.center, int animationDuration = 1000, Curve animationType = Curves.ease, bool enableAnimation = true})
const

Properties

animationDuration → int
Specifies the load time animation duration with enableAnimation. Duration is defined in milliseconds.
final
animationType → Curve
Specifies the animation type of pointers.
final
color → Color
color Sets the color of the pointer on the LinearGauge
final
enableAnimation → bool
Specifies the load time animation duration with enableAnimation. Duration is defined in milliseconds.
final
hashCode → int
The hash code for this object.
no setterinherited
height → double
height Sets the height of the pointer on the LinearGauge
final
isInteractive → bool
isInteractive enables/disables the interaction of the pointer on the LinearGauge
final
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
labelStyle → TextStyle
labelStyle Sets the style of the label of pointer
final
onChanged → ValueChanged<double>?
final
pointerAlignment → PointerAlignment
Pointer Alignment on the LinearGauge sets the alignment of pointer on the LinearGauge
final
pointerPosition → PointerPosition
Pointer Position on the LinearGauge sets the position of pointer on the LinearGauge
final
quarterTurns → QuarterTurns
quarterTurns Sets the rotation of the label of pointer
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
shape → PointerShape
shape Sets the shape of the pointer on the LinearGauge
final
showLabel → bool
showLabel shows/hides the label of the pointer on the Pointer
final
value → double
value Sets the value of the pointer on the LinearGauge default is to set to the value of the LinearGauge
final
width → double
width Sets the width of the pointer on the LinearGauge
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 RenderLinearGaugeShapePointer 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