previousPage method

Future<void> previousPage({
  1. required double pageHeight,
  2. Duration duration = const Duration(milliseconds: 300),
  3. Curve curve = Curves.easeInOut,
})

Implementation

Future<void> previousPage({
  required double pageHeight,
  Duration duration = const Duration(milliseconds: 300),
  Curve curve = Curves.easeInOut,
}) async {
  if (!hasClients) return;
  final target = (offset - pageHeight).clamp(0.0, position.maxScrollExtent);
  await animateTo(target, duration: duration, curve: curve);
}