ARotation class

Physics-based equivalent of AnimatedRotation, renamed to ARotation.

Animates changes in rotation using physics-based animations. This widget is useful for creating natural-feeling rotation animations, especially when combined with spring physics.

{@macro ImplicitlyPhysicsAnimatedWidget}

{@tool snippet} This example shows a widget that springs between two rotation angles:

class _MyWidget extends StatefulWidget {
  @override
  State<_MyWidget> createState() => _MyWidgetState();
}

class _MyWidgetState extends State<_MyWidget> {
  bool _rotated = false;

  @override
  Widget build(BuildContext context) {
    return ARotation(
      physics: Spring.withDamping(
        mass: 1.0,
        dampingFraction: 0.5,
      ),
      turns: _rotated ? 0.5 : 0.0, // Half turn when rotated
      child: GestureDetector(
        onTap: () => setState(() => _rotated = !_rotated),
        child: Container(
          width: 100,
          height: 100,
          color: Colors.blue,
          child: const Center(child: Text('Tap me!')),
        ),
      ),
    );
  }
}

{@end-tool}

Properties

  • turns - The target rotation in turns (1.0 = 360 degrees)
  • alignment - The alignment of the rotation origin
  • filterQuality - The quality of image filtering when rotating

See also:

  • AScale for scaling animations
  • ASlide for translation animations
Inheritance

Constructors

ARotation({Key? key, required double turns, Widget? child, Alignment alignment = Alignment.center, FilterQuality? filterQuality, Duration? duration, Physics? physics, VoidCallback? onEnd})
Creates a new ARotation. Physics-based equivalent of AnimatedRotation, renamed to ARotation.
const

Properties

alignment → Alignment
final
child → Widget?
final
duration → Duration?
The duration of the animation.
finalinherited
filterQuality → FilterQuality?
final
hashCode → int
The hash code for this object.
no setterinherited
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
onEnd → VoidCallback?
A callback that is called when an animation completes.
finalinherited
physics → Physics?
The physics or curve that controls how the animation moves.
finalinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
turns → double
final

Methods

createElement() → StatefulElement
Creates a StatefulElement to manage this widget's location in the tree.
inherited
createState() → State<ARotation>
Creates the mutable state for this widget at a given location in the tree.
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.
override
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

Operators

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