peppy tried something like this in 2007. It wasn't pretty.TheCameleon wrote:
PS : for those interested in technical stuff :
Before, thick lines were drown for sliders
Now, I'm trying to draw the whole path "around" the slider (and that's much harder)

If Canvas supports anything like max blending, palette substitution, and backbuffers, you could take an mmslider approach, but I wouldn't expect this is possible.
inb4webgl