build method

Implementation

@override
Widget build(BuildContext context) {
  var yTranslation = 0.0, xTranslation = 0.0;

  final slideAnimation = Tween(begin: 0.0, end: 1.0).animate(
    CurvedAnimation(
      parent: widget.animationController,
      curve: Interval((1 / widget.itemCount) * widget.position, 1.0, curve: Curves.fastOutSlowIn),
    ),
  );

  widget.animationController.forward();

  return AnimatedBuilder(
    animation: widget.animationController,
    builder: (context, child) {
      if (widget.slideDirection == SlideDirection.fromTop) {
        yTranslation = -50 * (1.0 - slideAnimation.value);
      } else if (widget.slideDirection == SlideDirection.fromBottom) {
        yTranslation = 50 * (1.0 - slideAnimation.value);
      } else if (widget.slideDirection == SlideDirection.fromRight) {
        xTranslation = 400 * (1.0 - slideAnimation.value);
      } else {
        xTranslation = -400 * (1.0 - slideAnimation.value);
      }

      return FadeTransition(
        opacity: slideAnimation,
        child: Transform(
          transform: Matrix4.translationValues(xTranslation, yTranslation, 0.0),
          child: widget.child,
        ),
      );
    },
  );
}