I've developed the code to make this work, and have been testing it on my own system. I felt i should share as no other action bar add-on, that i know of, can do this. Here is a link to a working demo of the code. https://github.com/Goranaws/Dominos_Arc/tree/master It adds an option menu to the action bar menu, that lets you curve the layout out of any action bar.

Will take a look at this weekend

Looking at the code, everything seems good to me.
Testing it in game, I think it works fairly well. The main issue, if there is one, is that the rectangles that contain the bars should probably update in size and position to make it easier to stick stuff to them, etc.

I will see what I can do. I don't think it'll take too much effort to get the rectangle to work as needed.

Was working on this, then had to do a system restore on my computer. Will have a working version with resizing ready as soon as my job allows me time to work on it.

Finally have bar resizing working. it may need a few tweaks, but it does the job.

Just added you as a collaborator. you can make any changes or simplifications you see fit. Also posted a new version. Bar resizing is now fully operational.

So, you are gonna hate me, but I've also figured out how to do do round bars. Will post a working demo of it soon as well.

now have round bars up for testing. tied it in with the my arced bar module. lemme know what you think of everything.