public virtual bool shouldAcceptUserOffset(ScrollMetrics position)
{
if (parent == null)
{
return(position.pixels != 0.0 || position.minScrollExtent != position.maxScrollExtent);
}
return(parent.shouldAcceptUserOffset(position));
}
void _handlePointerScroll(PointerEvent e)
{
D.assert(e is PointerScrollEvent);
if (_physics != null && !_physics.shouldAcceptUserOffset(position))
{
return;
}
float targetScrollOffset = _targetScrollOffsetForPointerScroll(e as PointerScrollEvent);
if (targetScrollOffset != position.pixels)
{
position.jumpTo(targetScrollOffset);
}
}