protected override Size ArrangeOverride(Size finalSizeInHostCoordinates)
{
var effectiveZoomFactor = ZoomFactor;
var finalSizeInViewCoordinates = finalSizeInHostCoordinates.Scale(effectiveZoomFactor);
var requiredSizeInViewCoordinates = base.ArrangeOverride(finalSizeInViewCoordinates);
var requiredSizeInHostCoordinates = requiredSizeInViewCoordinates.Scale(1 / effectiveZoomFactor);
if (effectiveZoomFactor != 1)
{
transform.ScaleX = transform.ScaleY = 1 / effectiveZoomFactor;
contentHolder.RenderTransform = transform;
}
else
contentHolder.RenderTransform = null;
#if LOG_MEASURE_ARRANGE_OVERRIDE
Debug.WriteLine("*** ArrangeOverride ***");
Debug.WriteLine(" input size (host coordinates): {0:#.} x {1:#.}", finalSizeInHostCoordinates.Width, finalSizeInHostCoordinates.Height);
Debug.WriteLine(" converted (view coordinates): {0:#.} x {1:#.}", finalSizeInViewCoordinates.Width, finalSizeInViewCoordinates.Height);
Debug.WriteLine(" required size (view coordinates): {0:#} x {1:#.}", requiredSizeInViewCoordinates.Width, requiredSizeInViewCoordinates.Height);
Debug.WriteLine(" scaling factor: {0:#.##}", ZoomFactor);
Debug.WriteLine(" returning (host coordinates): {0:#.} x {1:#.}", requiredSizeInHostCoordinates.Width, requiredSizeInHostCoordinates.Height);
#endif
return requiredSizeInHostCoordinates;
}
protected override Size MeasureOverride(Size availableSizeInHostCoordinates)
{
var effectiveZoomFactor = ZoomFactor;
var availableSizeInViewCoordinates = availableSizeInHostCoordinates.Scale(effectiveZoomFactor);
var desiredSizeInViewCoordinates = base.MeasureOverride(availableSizeInViewCoordinates);
var desiredSizeInHostCoordinates = desiredSizeInViewCoordinates.Scale(1 / effectiveZoomFactor);
#if LOG_MEASURE_ARRANGE_OVERRIDE
Debug.WriteLine("*** MeasureOverride ***");
Debug.WriteLine(" input size (host coordinates): {0:#.} x {1:#.}", availableSizeInHostCoordinates.Width, availableSizeInHostCoordinates.Height);
Debug.WriteLine(" converted (view coordinates): {0:#.} x {1:#.}", availableSizeInViewCoordinates.Width, availableSizeInViewCoordinates.Height);
Debug.WriteLine(" required size (view coordinates): {0:#} x {1:#.}", desiredSizeInViewCoordinates.Width, desiredSizeInViewCoordinates.Height);
Debug.WriteLine(" scaling factor: {0:#.##}", ZoomFactor);
Debug.WriteLine(" returning (host coordinates): {0:#.} x {1:#.}", desiredSizeInHostCoordinates.Width, desiredSizeInHostCoordinates.Height);
#endif
return desiredSizeInHostCoordinates;
}