WidgetPointer class

Create the pointer to indicate the value with built-in shape.

To highlight values, set any desired widget to child property.

Widget build(BuildContext context) {
   return Container(
       child: SfRadialGauge(
         axes:<RadialAxis>[RadialAxis(
            pointers: <GaugePointer>[WidgetPointer(value: 50,
             widget: Container( height: 30, width: 30,
                  decoration: BoxDecoration(
                    shape: BoxShape.circle,
                    border: Border.all(color: Colors.red)),
                      child: Icon( Icons.check, color: Colors.black ))
            )],
           )]
       ));
}
Inheritance
Implemented types

Constructors

WidgetPointer.new({Key? key, double value = 0, bool enableDragging = false, ValueChanged<double>? onValueChanged, ValueChanged<double>? onValueChangeStart, ValueChanged<double>? onValueChangeEnd, ValueChanged<ValueChangingArgs>? onValueChanging, AnimationType animationType = AnimationType.ease, bool enableAnimation = false, double animationDuration = 1000, GaugeSizeUnit offsetUnit = GaugeSizeUnit.logicalPixel, double offset = 0, required Widget child})
Create a widget pointer with the default or required properties.
const

Properties

animationDuration → double
Specifies the duration of the pointer animation.
final
animationType → AnimationType
Specifies the different type of animation for pointer.
final
child → Widget
A widget, which is to be used as the pointer.
final
enableAnimation → bool
Whether to enable the pointer animation.
final
enableDragging → bool
Whether to allow the pointer dragging.
final
hashCode → int
The hash code for this object.
no setterinherited
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
offset → double
Adjusts the widget pointer position.
final
offsetUnit → GaugeSizeUnit
Calculates the pointer position either in logical pixel or radius factor.
final
onValueChanged → ValueChanged<double>?
Called during a drag when the user is selecting a new value for the pointer by dragging.
final
onValueChangeEnd → ValueChanged<double>?
Called when the user is done selecting a new value of the pointer by dragging.
final
onValueChangeStart → ValueChanged<double>?
Called when the user starts selecting a new value of pointer by dragging.
final
onValueChanging → ValueChanged<ValueChangingArgs>?
Called during a drag when the user is selecting before a new value for the pointer by dragging.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
value → double
Specifies the value to the pointer.
final

Methods

createElement() → SingleChildRenderObjectElement
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
This method is called when a RenderObject that was previously associated with this widget is removed from the render tree. The provided RenderObject will be of the same type as the one created by this widget's createRenderObject method.
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
updateRenderObject(BuildContext context, covariant RenderWidgetPointer 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