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) {
  // The ImageFilter layer created by setting filterQuality will introduce
  // a saveLayer call. This is usually worthwhile when animating the layer,
  // but leaving it in the layer tree before the animation has started or after
  // it has finished significantly hurts performance.
  return Transform(
    transform: onTransform(animation.value),
    alignment: alignment,
    filterQuality: animation.isAnimating ? filterQuality : null,
    child: child,
  );
}