zoomOutDown static method

AnimatedBuilder zoomOutDown(Animation<double> animation, Widget child)

缩小下移动画

Implementation

static AnimatedBuilder zoomOutDown(
  Animation<double> animation,
  Widget child,
) {
  return AnimatedBuilder(
    animation: animation,
    builder: (context, child) {
      double offset = 100.0 * (1.0 - animation.value); // 下移偏移量
      return Transform.translate(
        offset: Offset(0, offset),
        child: ScaleTransition(
          scale: Tween<double>(begin: 1.0, end: 0.0).animate(
            CurvedAnimation(
              parent: animation,
              curve: Curves.easeIn,
            ),
          ),
          child: FadeTransition(
            opacity: animation,
            child: child,
          ),
        ),
      );
    },
    child: child,
  );
}