VisibilityEffect class

Effect that toggles the visibility of the target (via Visibility). Defaults to end=true.

The maintain parameter is assigned to the Visibility properties maintainSize, maintainAnimation, maintainState, maintainInteractivity and maintainSemantics.

Inheritance

• Object
• Effect<bool>
• VisibilityEffect

Annotations

• @immutable

Constructors

VisibilityEffect({Duration? delay, Duration? duration, bool? end, bool? maintain})

const

Properties

begin → bool?

The begin value for the effect. If null, effects should use a reasonable default value when appropriate.

final, inherited

curve → Curve?

The specified curve for the effect. If null, will use the curve from the previous effect, or Animate.defaultCurve if this is the first effect.

final, inherited

delay → Duration?

The specified delay for the effect. If null, will use the delay from the previous effect, or Duration.zero if this is the first effect.

final, inherited

duration → Duration?

The specified duration for the effect. If null, will use the duration from the previous effect, or Animate.defaultDuration if this is the first effect.

final, inherited

end → bool?

The end value for the effect. If null, effects should use a reasonable default value when appropriate.

final, inherited

hashCode → int

The hash code for this object.

no setter, inherited

maintain → bool

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

build(BuildContext context, Widget child, AnimationController controller, EffectEntry entry) → Widget

Builds the widgets necessary to implement the effect, based on the provided AnimationController and EffectEntry.

override

buildAnimation(AnimationController controller, EffectEntry entry) → Animation<bool>

Returns an animation based on the controller, entry, and begin/end values.

inherited

getBeginRatio(AnimationController controller, EffectEntry entry) → double

Returns a ratio corresponding to the beginning of the specified entry.

inherited

getEndRatio(AnimationController controller, EffectEntry entry) → double

Returns a ratio corresponding to the end of the specified entry.

inherited

getOptimizedBuilder<U>({required ValueListenable<U> animation, Widget? child, required TransitionBuilder builder}) → AnimatedBuilder

Returns an optimized AnimatedBuilder that doesn't rebuild if the value hasn't changed.

inherited

getToggleBuilder({required ValueListenable<double> animation, required Widget child, required bool toggle(), required ToggleEffectBuilder builder}) → AnimatedBuilder

Returns an AnimatedBuilder that rebuilds when the boolean value returned by the toggle function changes.

inherited

isAnimationActive(Animation animation) → bool

Check if the animation is currently running / active.

inherited

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited

Constants

defaultMaintain → const bool

neutralValue → const bool