I think I saw this on Digg a few weeks ago…or perhaps somewhere else. Anyway, I think this is a great idea:
It seems to address some very obvious limitations of scrollbars, I like the little triangle when the “thumb” gets down to 1 pixel, and I like that it’s easier to grab quickly with the mouse without having to very precisely point at the exact right spot. I suspect that GUIs supporting quick gestures are a lot more productive than GUIs requiring super precise pointing and clicking.
I do not have time to work on this, but I wonder if anyone out there is interested in putting together a Swing implementation of this component?
Next question…is this component a new innovation, or is this something that already exists, for instance, in OSX or some other GUI toolkit?