scrollLevelDown method

void scrollLevelDown()

Implementation

void scrollLevelDown() {
  if (_scrollController == null) return;

  double itemHeight = widget.itemHeight;
  double nextPosition = _scrollController!.offset + itemHeight;
  double roundToNextItemPosition = (nextPosition / itemHeight).round() * itemHeight;
  _scrollController!.animateTo(roundToNextItemPosition, duration: const Duration(milliseconds: 200), curve: Curves.fastOutSlowIn);
}