/// <summary>
/// Measures the size for this <see cref="OverlayTextAdorner"/> to render.
/// </summary>
/// <param name="constraint">
/// The <see cref="Size"/> available to measure.
/// </param>
/// <returns>
/// The <see cref="Size"/> required for this <see cref="OverlayTextAdorner"/>.
/// If the internal <see cref="Control"/> has not been initialized,
/// zero size will be returned.
/// </returns>
protected override Size MeasureOverride(Size constraint)
{
if (overlayTextControl != null)
{
Size childConstraint = new Size(Double.PositiveInfinity, Double.PositiveInfinity);
overlayTextControl.Measure(childConstraint);
}
return(new Size(0, 0));
}
