void CalculateArrangeRectVertically(RPNode node, out double y, out double height)
{
Rect measureRect = node.m_measureRect;
double desiredHeight = Math.Min(measureRect.Height, node.GetDesiredHeight());
MUX_ASSERT(node.IsMeasured() && (measureRect.Height != double.PositiveInfinity));
// The initial values correspond to the top corner, using the
// desired size of element. If no attached properties were set,
// this means that the element will default to the top corner of
// the panel.
y = measureRect.Y;
height = desiredHeight;
if (node.IsTopAnchored())
{
if (node.IsBottomAnchored())
{
y = measureRect.Y;
height = measureRect.Height;
}
else
{
y = measureRect.Y;
height = desiredHeight;
}
}
else if (node.IsBottomAnchored())
{
y = measureRect.Y + measureRect.Height - desiredHeight;
height = desiredHeight;
}
else if (node.IsVerticalCenterAnchored())
{
y = measureRect.Y + (measureRect.Height / 2.0f) - (desiredHeight / 2.0f);
height = desiredHeight;
}
}