ImplicitlyAnimatedWidget class abstract

Abstract base class for widgets that implicitly animate when their properties change.

Subclasses should override State.build and read animated values from tweens set up in AnimatedWidgetBaseState.forEachTween.

class AnimatedOpacity extends ImplicitlyAnimatedWidget {
  AnimatedOpacity({
    required this.opacity,
    required super.duration,
    super.curve,
  });
  final double opacity;

  @override
  AnimatedWidgetBaseState<AnimatedOpacity> createState() =>
      _AnimatedOpacityState();
}
Inheritance

Constructors

ImplicitlyAnimatedWidget({required Duration duration, Curve? curve, Key? key})

Properties

children → List<Widget>
Child widgets that receive forwarded messages.
no setterinherited
curve → Curve?
The curve to apply to the animation. Null uses linear.
final
debugRenderObjectPassthrough → bool
Whether this widget is intentionally transparent to render-object layouts.
no setterinherited
duration → Duration
The duration over which to animate changes.
final
focusable → bool
Whether this widget can receive keyboard focus.
no setterinherited
hashCode → int
The hash code for this object.
no setterinherited
id → String
Unique identifier for this widget.
no setterinherited
key → Key?
Key for preserving widget identity.
finalinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
theme → Theme
Access the current theme.
no setterinherited

Methods

buildCachedView<T>(T builder(), Object? cacheKey) → T
Returns a cached view if the cache key matches.
inherited
createState() → State<StatefulWidget>
Creates the mutable State associated with this widget.
inherited
handleInit() → Cmd?
Override this instead of init for widget-specific initialization.
inherited
handleIntercept(Msg msg) → (Widget, Cmd?)
Override this to handle messages before they reach children.
inherited
handleUpdate(Msg msg) → (Widget, Cmd?)
Override this to handle messages specific to this widget.
inherited
init() → Cmd?
Called once when the widget is first mounted.
inherited
invalidateCachedView() → void
Clears any cached view for this widget.
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
toString() → String
A string representation of this object.
inherited
update(Msg msg) → (Model, Cmd?)
Handles messages by forwarding to children then calling handleUpdate.
inherited
view() → Object
Renders the widget to a string or View.
inherited

Operators

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