LinearWidgetPointer class Null safety

LinearMarkerPointer has properties for customizing widget marker pointer.

Inheritance
Implemented types

Constructors

LinearWidgetPointer({Key? key, required double value, ValueChanged<double>? onChanged, ValueChanged<double>? onChangeStart, ValueChanged<double>? onChangeEnd, bool enableAnimation = true, int animationDuration = 1000, LinearAnimationType animationType = LinearAnimationType.ease, VoidCallback? onAnimationCompleted, double offset = 0.0, LinearElementPosition position = LinearElementPosition.cross, LinearMarkerAlignment markerAlignment = LinearMarkerAlignment.center, LinearMarkerDragBehavior dragBehavior = LinearMarkerDragBehavior.free, required Widget child})
Creates a widget marker pointer.
const

Properties

animationDuration int
Specifies the load time animation duration with enableAnimation. Duration is defined in milliseconds. [...]
final
animationType LinearAnimationType
Specifies the animation type for widget marker pointers. [...]
final
child Widget?
The widget below this widget in the tree. [...]
final, inherited
dragBehavior LinearMarkerDragBehavior
Specifies the drag behavior for widget marker pointer. [...]
final
enableAnimation bool
Specifies the loading animation for widget marker pointers with animationDuration. [...]
final
hashCode int
The hash code for this object. [...]
@nonVirtual, read-only, inherited
key Key?
Controls how one widget replaces another widget in the tree. [...]
final, inherited
markerAlignment LinearMarkerAlignment
Specifies the marker alignment. [...]
final
offset double
Specifies the offset for widget pointer with respect to axis. The offset cannot be negative. The offset value will not be effective when the widget pointer is in cross position. [...]
final
onAnimationCompleted VoidCallback?
Called when the widget pointer animation is completed. [...]
final
onChanged ValueChanged<double>?
Signature for a callback that report that a value was changed for a marker pointer. [...]
final
onChangeEnd ValueChanged<double>?
Signature for a callback that reports the value changes are ended for a marker pointer. [...]
final
onChangeStart ValueChanged<double>?
Signature for a callback that reports the value of a marker pointer has started to change. [...]
final
position LinearElementPosition
Specifies the position of widget marker pointers with respect to axis. [...]
final
runtimeType Type
A representation of the runtime type of the object.
read-only, inherited
value double
Specifies the pointer value for LinearWidgetPointer. This value must be between the min and max value of an axis track. [...]
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. [...]
@protected, 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.
@protected, inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent 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 RenderLinearWidgetPointer 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. [...]
@nonVirtual, inherited