public SpaceItemDecoration(int spaceDp, Thickness paddingDp)
{
_space = PlatformHelper.DpToPixels(spaceDp);
_leftPadding = PlatformHelper.DpToPixels(paddingDp.Left);
_topPadding = PlatformHelper.DpToPixels(paddingDp.Top);
_rightPadding = PlatformHelper.DpToPixels(paddingDp.Right);
_bottomPadding = PlatformHelper.DpToPixels(paddingDp.Bottom);
}
private void ScrollToCurrentItem()
{
if (Element.CurrentIndex == -1 || Control.GetAdapter() == null || Element.CurrentIndex >= Control.GetAdapter().ItemCount)
{
return;
}
int offset = 0;
if (HorizontalLinearLayoutManager != null)
{
var itemWidth = PlatformHelper.DpToPixels(Element.ItemWidth + Element.ItemSpacing);
var width = Control.MeasuredWidth;
switch (Element.SnapStyle)
{
case SnapStyle.Center:
offset = (width / 2) - (itemWidth / 2);
break;
}
}
LinearLayoutManager?.ScrollToPositionWithOffset(Element.CurrentIndex, offset);
}
private void ComputeSpanCount(int recyclerWidth)
{
int spanCount = recyclerWidth / PlatformHelper.DpToPixels(_itemWidthDp + 2 * _marginDp);
SpanCount = spanCount;
}