protected override void OnLayout(bool changed, int left, int top, int right, int bottom)
{
// If the scroll view has changed size because of soft keyboard dismissal
// (while WindowSoftInputModeAdjust is set to Resize), then we may need to request a
// layout of the ScrollViewContainer
bool requestContainerLayout = bottom > _previousBottom;
_previousBottom = bottom;
_container?.Measure(MeasureSpecFactory.MakeMeasureSpec(right - left, MeasureSpecMode.Unspecified),
MeasureSpecFactory.MakeMeasureSpec(bottom - top, MeasureSpecMode.Unspecified));
base.OnLayout(changed, left, top, right, bottom);
if (_view.Content != null && _hScrollView != null)
{
_hScrollView.Layout(0, 0, right - left, Math.Max(bottom - top, (int)Context.ToPixels(_view.Content.Height)));
}
else if (_view.Content != null && requestContainerLayout)
{
_container?.RequestLayout();
}
// if the target sdk >= 17 then setting the LayoutDirection on the scroll view natively takes care of the scroll
if (!_checkedForRtlScroll && _hScrollView != null && Element is IVisualElementController controller && controller.EffectiveFlowDirection.IsRightToLeft())
{
Device.BeginInvokeOnMainThread(() => UpdateScrollPosition(_hScrollView.ScrollX, ScrollY));
}
_checkedForRtlScroll = true;
}
