FortuneWheel class

A fortune wheel visualizes a (random) selection process as a spinning wheel divided into uniformly sized slices, which correspond to the number of items.

See also:

Inheritance
Implemented types

Constructors

FortuneWheel({Key? key, required List<FortuneItem> items, int rotationCount = FortuneWidget.kDefaultRotationCount, Stream<int> selected = const Stream<int>.empty(), Duration duration = FortuneWidget.kDefaultDuration, Curve curve = FortuneCurve.spin, List<FortuneIndicator> indicators = kDefaultIndicators, StyleStrategy styleStrategy = kDefaultStyleStrategy, bool animateFirst = true, VoidCallback? onAnimationStart, VoidCallback? onAnimationEnd, Alignment alignment = Alignment.topCenter, HapticImpact hapticImpact = HapticImpact.none, PanPhysics? physics, VoidCallback? onFling, ValueChanged<int>? onFocusItemChanged})
Creates a new FortuneWheel with the given items, which is centered on the selected value.

Properties

alignment → Alignment
The position to which the wheel aligns the selected value.
final
animateFirst → bool
Determines if this widget animates during its first build.
final
curve → Curve
The type of curve to use for easing the animation when selected changes.
final
duration → Duration
The animation duration used for FortuneCurve.spin within FortuneWidget instances.
final
hapticImpact → HapticImpact
HapticFeedback strength on each section border crossing.
final
hashCode → int
The hash code for this object.
no setterinherited
indicators → List<FortuneIndicator>
The list of indicators is rendered on top of the underlying FortuneWidget. These can be used to visualize the position of the selected item.
final
items → List<FortuneItem>
A list of FortuneItems to be shown within this FortuneWidget.
final
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
onAnimationEnd → VoidCallback?
Called when this widget's animation ends. Useful for enabling other widgets after the animation ends.
final
onAnimationStart → VoidCallback?
Called when this widget starts an animation. Useful for disabling other widgets during the animation.
final
onFling → VoidCallback?
Called when a fling gesture is detected by the active physics.
final
onFocusItemChanged → ValueChanged<int>?
Called with the index of the item at the focused alignment whenever a section border is crossed.
final
physics → PanPhysics
The behavior used for handling pan events on this widget.
final
rotationCount → int
The number of times a FortuneWidget rotates around all items before it settles on the selected value.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
selected → Stream<int>
A stream notifying this widget that a new value within items was selected.Used by FortuneWidgets to align indicators on the selected item.
final
styleStrategy → StyleStrategy
The strategy to use for styling individual items when they have no dedicated FortuneItem.style.
final

Methods

build(BuildContext context) → Widget
Describes the part of the user interface represented by this widget.
override
createElement() → _StatelessHookElement
Creates a StatelessElement to manage this widget's location in the tree.
inherited
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
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

Operators

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

Constants

kDefaultIndicators → const List<FortuneIndicator>
The default value for indicators on a FortuneWheel. Currently uses a single TriangleIndicator on Alignment.topCenter.
kDefaultStyleStrategy → const StyleStrategy