AnimationMean class
An animation of doubles that tracks the mean of two other animations.
The status of this animation is the status of the right animation if it is
moving, and the left animation otherwise.
The value of this animation is the double that represents the mean value
of the values of the left and right animations.
- Inheritance
-
- Object
- Listenable
- Animation<
double> - CompoundAnimation<
double> - AnimationMean
Constructors
-
AnimationMean({required Animation<
double> left, required Animation<double> right}) - Creates an animation that tracks the mean of two other animations.
Properties
-
first
→ Animation<
double> -
The first sub-animation. Its status takes precedence if neither are
animating.
finalinherited
- hashCode → int
-
The hash code for this object.
no setterinherited
- isAnimating → bool
-
Whether this animation is running in either direction.
no setterinherited
- isCompleted → bool
-
Whether this animation is stopped at the end.
no setterinherited
- isDismissed → bool
-
Whether this animation is stopped at the beginning.
no setterinherited
- isForwardOrCompleted → bool
-
Whether the current aim of the animation is toward completion.
no setterinherited
- isListening → bool
-
Whether there are any listeners.
no setterinherited
-
next
→ Animation<
double> -
The second sub-animation.
finalinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- status → AnimationStatus
-
Gets the status of this animation based on the first and next status.
no setterinherited
- value → double
-
The current value of the animation.
no setteroverride
Methods
-
addListener(
VoidCallback listener) → void -
Calls the listener every time the value of the animation changes.
inherited
-
addStatusListener(
AnimationStatusListener listener) → void -
Calls listener every time the status of the animation changes.
inherited
-
clearListeners(
) → void -
Removes all listeners added with addListener.
inherited
-
clearStatusListeners(
) → void -
Removes all listeners added with addStatusListener.
inherited
-
didRegisterListener(
) → void -
Calls didStartListening every time a registration of a listener causes
an empty list of listeners to become non-empty.
inherited
-
didStartListening(
) → void -
Called when the number of listeners changes from zero to one.
inherited
-
didStopListening(
) → void -
Called when the number of listeners changes from one to zero.
inherited
-
didUnregisterListener(
) → void -
Calls didStopListening when an only remaining listener is unregistered,
thus making the list empty.
inherited
-
drive<
U> (Animatable< U> child) → Animation<U> -
Chains a Tween (or CurveTween) to this Animation.
inherited
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
notifyListeners(
) → void -
Calls all the listeners.
inherited
-
notifyStatusListeners(
AnimationStatus status) → void -
Calls all the status listeners.
inherited
-
removeListener(
VoidCallback listener) → void -
Stop calling the listener every time the value of the animation changes.
inherited
-
removeStatusListener(
AnimationStatusListener listener) → void -
Stops calling the listener every time the status of the animation changes.
inherited
-
toString(
) → String -
A string representation of this object.
inherited
-
toStringDetails(
) → String -
Provides a string describing the status of this object, but not including
information about the object itself.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited