computeDy method

@override double computeDy(List<AnimatedSnackBar> snackBars, AnimatedSnackBar self)

Implementation

@override
double computeDy(List<AnimatedSnackBar> snackBars, AnimatedSnackBar self) {
  final index = snackBars.indexWhere(
    (element) => element.info.key.currentContext != null,
  );
  if (index != -1) {
    bool isDesktop =
        MediaQuery.of(snackBars[index].info.key.currentContext!).size.width >
            600;

    final olderBars = snackBars.where(
      (element) {
        bool isMobileAndSamePosition =
            (element.mobileSnackBarPosition == self.mobileSnackBarPosition &&
                !isDesktop);
        bool isDesktopAndSamePosition = (element.desktopSnackBarPosition ==
                self.desktopSnackBarPosition &&
            isDesktop);

        return (isMobileAndSamePosition || isDesktopAndSamePosition) &&
            (element.info.key.currentState?.isVisible ?? false) &&
            element.info.createdAt.isBefore(self.info.createdAt);
      },
    ).toList();

    return olderBars.fold<double>(0, (initialValue, element) {
      final box =
          element.info.key.currentContext!.findRenderObject() as RenderBox;

      return initialValue + box.size.height + gap;
    });
  }
  return 0;
}