Rainer Brockerhoff wrote:

…but seems to working quite well.

Hah. That was somewhat premature… I tried to put some new features into my RBSplitView, and found several bugs in the process. The main addition – an option to force subviews to always have a dimension multiple of some integer – failed after several days of beating all available neurons against it. It’s just too complex and I have urgent things to do elsewhere.

So, if you’re interested, you can download it from the above link, and please let me know if you find something wrong – or even if it works spectacularly well. Meanwhile, I plan to resume work on XRay, using the new view, of course, early next week.