NibMotionController class

External handle for driving one or more NibMotion widgets' animations imperatively — equivalent to Framer Motion's useAnimationControls().

final controller = NibMotionController();

@override
Widget build(BuildContext context) {
  return Column(children: [
    ElevatedButton(
      onPressed: () => controller.start(target: const NibAnim(opacity: 0, y: -20)),
      child: const Text('Hide'),
    ),
    NibMotion(
      controller: controller,
      animate: const NibAnim(opacity: 1, y: 0),
      child: MyWidget(),
    ),
  ]);
}

@override
void dispose() {
  controller.dispose();
  super.dispose();
}

A single controller can be attached to multiple NibMotion widgets (by passing it to each one's controller parameter); every method below applies to all of them.

Inheritance

Constructors

NibMotionController()

Properties

hashCode → int
The hash code for this object.
no setterinherited
hasListeners → bool
Whether any listeners are currently registered.
no setterinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited

Methods

addListener(VoidCallback listener) → void
Register a closure to be called when the object changes.
inherited
attach(NibMotionAnimator animator) → void
Attaches this controller to animator. Called by _NibMotionState during initState/didUpdateWidget.
detach(NibMotionAnimator animator) → void
Detaches animator from this controller. Called by _NibMotionState during dispose/didUpdateWidget.
dispose() → void
Discards any resources used by the object.
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
notifyListeners() → void
Call all the registered listeners.
inherited
removeListener(VoidCallback listener) → void
Remove a previously registered closure from the list of closures that are notified when the object changes.
inherited
repeat([bool enabled = true]) → void
Enables (or, with enabled: false, disables) NibMotion.repeatAnimationInLoop's ping-pong loop at runtime on every attached NibMotion, regardless of that widget's repeatAnimationInLoop value.
sequence(List<NibMotionSequenceStep> steps) → Future<void>
Runs steps in order, waiting for each step's animation to complete (and its NibMotionSequenceStep.wait, if any) before starting the next.
set(NibAnim target) → void
Immediately sets every attached NibMotion to target, with no animation.
start({NibAnim? target, List<NibKeyframe>? keyframes, NibTransition? transition}) → Future<void>
Drives every attached NibMotion:
stop() → void
Stops all in-progress animations on every attached NibMotion, freezing each animated property at its current value.
toString() → String
A string representation of this object.
inherited

Operators

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