build method

  1. @override
Widget build(
  1. BuildContext context
)
override

Override this method to build widgets that depend on the state of the listenable (e.g., the current value of the animation).

Implementation

@override
Widget build(BuildContext context) {
  final Animation<double> animation = listenable as Animation<double>;

  return AnimatedBuilder(
    animation: animation,
    builder: (context, child) => Container(
      padding: EdgeInsets.only(left: animation.value + end, right: end - animation.value),
      child: widget,
    ),
  );
}