AnimatedRotationModifier class

Animated version of Transform.rotate which automatically transitions the child's rotation over a given duration whenever the given rotation changes.

{@tool snippet}

This code defines a widget that uses AnimatedRotation to rotate a FlutterLogo gradually by an eighth of a turn (45 degrees) with each press of the button.

class LogoRotate extends StatefulWidget {
  const LogoRotate({super.key});

  @override
  State<LogoRotate> createState() => LogoRotateState();
}

class LogoRotateState extends State<LogoRotate> {
  double turns = 0.0;

  void _changeRotation() {
    setState(() => turns += 1.0 / 8.0);
  }

  @override
  Widget build(BuildContext context) {
    return Column(
      mainAxisAlignment: MainAxisAlignment.center,
      children: <Widget>[
        ElevatedButton(
          onPressed: _changeRotation,
          child: const Text('Rotate Logo'),
        ),
        Padding(
          padding: const EdgeInsets.all(50),
          child: AnimatedRotation(
            turns: turns,
            duration: const Duration(seconds: 1),
            child: const FlutterLogo(),
          ),
        ),
      ],
    );
  }
}

{@end-tool}

See also:

• AnimatedScale, for animating the scale of a child.
• RotationTransition, an explicitly animated version of this widget, where an Animation is provided by the caller instead of being built in.

Inheritance

• Object
• DiagnosticableTree
• Widget
• StatelessWidget
• SingleChildStatelessModifier
• SingleChildImplicitlyAnimatedModifier
• AnimatedRotationModifier

Available extensions

• ModifierTransformer

Constructors

AnimatedRotationModifier({Key? key, Widget? child, Curve curve = Curves.linear, required Duration duration, VoidCallback? onEnd, Key? modifierKey, required double turns, Alignment alignment = Alignment.center, FilterQuality? filterQuality})

Creates a widget that animates its rotation implicitly.

const

Properties

alignment → Alignment

The alignment of the origin of the coordinate system in which the rotation takes place, relative to the size of the box.

final

curve → Curve

The curve to apply when animating the parameters of this container.

final, inherited

duration → Duration

The duration over which to animate the parameters of this container.

final, inherited

filterQuality → FilterQuality?

The filter quality with which to apply the transform as a bitmap operation.

final

hashCode → int

The hash code for this object.

no setter, inherited

key → Key?

Controls how one widget replaces another widget in the tree.

final, inherited

modifierKey → Key?

The actual key of the widget, which Modifier wrapped

final, inherited

onEnd → VoidCallback?

Called every time an animation completes.

final, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

turns → double

The animation that controls the rotation of the child.

final

Methods

build(BuildContext context) → Widget

Describes the part of the user interface represented by this widget.

inherited

buildWithChild(BuildContext context, Widget? child) → Widget

A build method that receives an extra child parameter.

override

createElement() → SingleChildStatelessElement

Create a SingleChildStatelessElement

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

modified() → Modifier

Available on Widget, provided by the ModifierTransformer extension

Transform normal widget to Modifier

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