ThenEffect class

A special convenience "effect" that makes it easier to sequence effects after one another. It does this by establishing a new baseline time equal to the previous effect's end time and its own optional delay. All subsequent effect delays are relative to this new baseline.

This example demonstrates ThenEffect and how it interacts with delay:

Text("Hello").animate()
  .fadeIn(delay: 300.ms, duration: 500.ms) // end @ 800ms
  .then()                  // baseline=800ms (prior end)
  .slide(duration: 400.ms) // start @ 800ms, end @ 1200ms
  .then(delay: 300.ms)     // baseline=1500ms (1200+300)
  .blur(delay: -150.ms)    // start @ 1350ms (1500-150)
  .tint()                  // start @ 1350ms (inherited)
  .shake(delay: 0.ms)      // start @ 1500ms (1500+0)
Inheritance
Annotations

Constructors

ThenEffect({Duration? delay, Duration? duration, Curve? curve})
const

Properties

begin → double?
The begin value for the effect. If null, effects should use a reasonable default value when appropriate.
finalinherited
curve → Curve?
The specified easing curve for the effect. If null, will inherit the curve from the previous effect, or use Animate.defaultCurve if this is the first effect.
finalinherited
delay → Duration?
The specified delay for the effect. If null, will inherit the delay from the previous effect, or use Duration.zero if this is the first effect.
finalinherited
duration → Duration?
The specified duration for the effect. If null, will inherit the duration from the previous effect, or use Animate.defaultDuration if this is the first effect.
finalinherited
end → double?
The end value for the effect. If null, effects should use a reasonable default value when appropriate.
finalinherited
hashCode → int
The hash code for this object.
no setterinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited

Methods

build(BuildContext context, Widget child, AnimationController controller, EffectEntry entry) → Widget
Builds the widgets that implement the effect on the target child, based on the provided AnimationController and EffectEntry.
inherited
buildAnimation(AnimationController controller, EffectEntry entry) → Animation<double>
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