/// <summary>
/// Compares two <see cref="IPresentationImage"/>s.
/// </summary>
public override int Compare(IPresentationImage x, IPresentationImage y)
{
ISopProvider xProvider = x as ISopProvider;
ISopProvider yProvider = y as ISopProvider;
if (ReferenceEquals(xProvider, yProvider))
{
return(0); //same object or both are null
}
//at this point, at least one of x or y is non-null and they are not the same object
if (xProvider == null)
{
return(-ReturnValue); // x > y (because we want x at the end for non-reverse sorting)
}
if (yProvider == null)
{
return(ReturnValue); // x < y (because we want y at the end for non-reverse sorting)
}
if (ReferenceEquals(xProvider.Sop, yProvider.Sop))
{
return(0);
}
return(Compare(xProvider.Sop, yProvider.Sop));
}
/// <summary>
/// Compares two <see cref="IImageSet"/>s.
/// </summary>
public override int Compare(IImageSet x, IImageSet y)
{
if (x.DisplaySets.Count == 0 || y.DisplaySets.Count == 0)
{
Debug.Assert(false, "All image sets being sorted must have at least one display set with at least one image in order for them to be sorted properly.");
return(0);
}
IDisplaySet displaySet1 = x.DisplaySets[0];
IDisplaySet displaySet2 = y.DisplaySets[0];
if (displaySet1.PresentationImages.Count == 0 || displaySet2.PresentationImages.Count == 0)
{
Debug.Assert(false, "All image sets being sorted must have at least one display set with at least one image in order for them to be sorted properly.");
return(0);
}
ISopProvider provider1 = displaySet1.PresentationImages[0] as ISopProvider;
ISopProvider provider2 = displaySet2.PresentationImages[0] as ISopProvider;
if (provider1 == null)
{
if (provider2 == null)
{
return(0); // x == y
}
else
{
return(-this.ReturnValue); // x > y (because we want it at the end for non-reverse sorting)
}
}
else
{
if (provider2 == null)
{
return(this.ReturnValue); // x < y (because we want it at the end for non-reverse sorting)
}
}
return(Compare(provider1.Sop, provider2.Sop));
}
private IEnumerable <IComparable> GetCompareValues(IImageSet imageSet)
{
DateTime?studyDate = null;
DateTime?studyTime = null;
IDicomImageSetDescriptor descriptor = imageSet.Descriptor as IDicomImageSetDescriptor;
if (descriptor == null)
{
if (imageSet.DisplaySets.Count == 0)
{
Debug.Assert(false, "All image sets being sorted must have at least one display set with at least one image in order for them to be sorted properly.");
}
else if (imageSet.DisplaySets[0].PresentationImages.Count == 0)
{
Debug.Assert(false, "All image sets being sorted must have at least one display set with at least one image in order for them to be sorted properly.");
}
else
{
ISopProvider provider = imageSet.DisplaySets[0].PresentationImages[0] as ISopProvider;
if (provider != null)
{
studyDate = DateParser.Parse(provider.Sop.StudyDate);
studyTime = TimeParser.Parse(provider.Sop.StudyTime);
}
}
}
else
{
studyDate = DateParser.Parse(descriptor.SourceStudy.StudyDate);
studyTime = TimeParser.Parse(descriptor.SourceStudy.StudyTime);
}
yield return(studyDate);
yield return(studyTime);
yield return(imageSet.Name);
}
