WheelOverlayEntryContentState class Null safety





angleOffsetNotifier ValueNotifier<double>
angle offset value notifier, initialized with 0 rotation when user pan on the wheel, rotate the wheel with angle ValueNotifier is used to reduce the amount of repaint
read / write
animation Animation<double>
rotation animation, other animations are handled individually by each slice rotation is cancelled for now also see FanSliceWidget generated by initState -> _initAnimation
read / write
center Offset
Center of the wheel, generated by initState -> _initCalculateCenter
read / write
context BuildContext
The location in the tree where this widget builds.
read-only, inherited
fanSliceList List<FanSlice>
List of fan pieces generated by initState -> _initFanSliceList with respect to colors
read / write
hashCode int
The hash code for this object.
read-only, inherited
mounted bool
Whether this State object is currently in a tree.
read-only, inherited
outerRadius double
outerRadius is initialized by initState -> _initCalculateOuterRadius _initCalculateOuterRadius needs to be called before _initCalculateCenter
late, final
runtimeType Type
A representation of the runtime type of the object.
read-only, inherited
widget WheelOverlayEntryContent
The current configuration.
read-only, inherited


activate() → void
Called when this object is reinserted into the tree after having been removed via deactivate.
@mustCallSuper, @protected, inherited
build(BuildContext context) Widget
Describes the part of the user interface represented by this widget.
buildChild(BuildContext context) Widget
callback(FanPiece fanPiece) → void
on FanPieceWidget clicked, this function is invoked
deactivate() → void
Called when this object is removed from the tree.
@mustCallSuper, @protected, inherited
debugFillProperties(DiagnosticPropertiesBuilder properties) → void
Add additional properties associated with the node.
didChangeDependencies() → void
Called when a dependency of this State object changes.
@mustCallSuper, @protected, inherited
didUpdateWidget(covariant WheelOverlayEntryContent oldWidget) → void
Called whenever the widget configuration changes.
@mustCallSuper, @protected, inherited
dispose() → void
Called when this object is removed from the tree permanently.
@mustCallSuper, @protected, inherited
increaseAngleOffset(double move) → void
rotate the wheel, increment the angle by move
initState() → void
Initialize overlay entry content state _initCalculateOuterRadius needs to be called first _initCalculateCenter requires _initCalculateOuterRadius to have been called _initFanSliceList requires _initCalculateOuterRadius and _initCalculateCenter to have been called _initAnimation is initializing a constant value for now, but if this rotation animation is enabled in the future, it requires _initCalculateOuterRadius and _initCalculateCenter to have been called
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed.
reassemble() → void
Called whenever the application is reassembled during debugging, for example during hot reload.
@mustCallSuper, @protected, inherited
setState(VoidCallback fn) → void
Notify the framework that the internal state of this object has changed.
@protected, inherited
toDiagnosticsNode({String? name, DiagnosticsTreeStyle? style}) DiagnosticsNode
Returns a debug representation of the object that is used by debugging tools and by DiagnosticsNode.toStringDeep.
toString({DiagnosticLevel minLevel = DiagnosticLevel.info}) String
A string representation of this object.
toStringShort() String
A brief description of this object, usually just the runtimeType and the hashCode.


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