transform method

  1. @override
Widget transform(
  1. BuildContext context,
  2. Widget page,
  3. int index,
  4. int? currentPage,
  5. double pageDelta,
  6. int itemCount,
)
override

Implementation

@override
Widget transform(BuildContext context, Widget page, int index, int? currentPage, double pageDelta, int itemCount) {
  if (index == currentPage) {
    return Transform(
      alignment: leftPageAlignment,
      transform: Matrix4.identity()
        ..setEntry(3, 2, perspectiveScale)
        ..rotateY(rotationAngle * pageDelta),
      child: page,
    );
  } else if (index == currentPage! + 1) {
    return Transform(
      alignment: rightPageAlignment,
      transform: Matrix4.identity()
        ..setEntry(3, 2, perspectiveScale)
        ..rotateY(-rotationAngle * (1 - pageDelta)),
      child: page,
    );
  } else {
    return page;
  }
}