private WpfSize ConvertSize(SizeF size, WpfSize availableSize, out WpfSize renderSize)
{
double ratio;
if (Orientation == Orientation.Vertical)
{
ratio = availableSize.Width / size.Width;
}
else
{
ratio = availableSize.Height / size.Height;
}
if (!double.IsNaN(MaxScale))
{
ratio = Math.Min(ratio, MaxScale);
}
var newSize = new WpfSize((int)(size.Width * ratio), (int)(size.Height * ratio));
renderSize = BitmapUtility.ConvertSize(newSize);
return(newSize);
}