Microsoft Visual Studio has a very useful wide scrollbar where you get to see the whole file scaled so it fits vertically. Is there a way to do this in Emacs?
I've looked into having a 2nd frame and changing the zoom of the font in that frame, but the zoom affects any frame with the same buffer.
Most of the emacs packages I've seen related to this have thought of it as coming from the sublime Minimap, which seems identical. I've seen people refer to these, but I don't have much experience with them:
Library thumb-frm.el gives you thumbnail frames, which provide a very similar feature.
These are real, usable frames, but they are thumbnail-size (configurable). And you can, if you want, have them placed along a screen edge, similar to what you show.
See Emacs-Wiki page Fisheye with Thumbs for details and screenshots.
