jumpToPage method

void jumpToPage(int page)

Jumps immediately to the specified page index.

Note that the page index is not checked to be within the range of the scroll view's pages.

Example

final controller = PageController();
controller.jumpToPage(2);

Implementation

void jumpToPage(int page) {
  if (_attachedElement == null) return;

  final isHoriz = direction == ScrollDirection.horizontal;

  // calculate page size
  final pageSize =
      (isHoriz
          ? _attachedElement!.clientWidth
          : _attachedElement!.clientHeight) *
      viewportFraction;

  // calculate target scroll offset
  final targetOffset = page * pageSize;

  // update scroll position
  if (isHoriz) {
    _attachedElement!.scrollLeft = targetOffset;
  } else {
    _attachedElement!.scrollTop = targetOffset;
  }

  // notify listeners of scroll position changes
  notifyListeners();
}