So it's Sunday and I'm thinking I'll get into el-get sometime later. Now is the time to present dim-switch-window.el which implements a visual C-x o. I know of only one way to present a visual effect, and that's with a screenshot:

So as you can see, it's all about showing a big number in each window, tweaking each window's name, and waiting till the user press one of the expected key — or timeout and stay on the same window as before C-x o. When there's only 1 or 2 windows displayed, though, the right thing happen and you see no huge number (in the former case, nothing happens, in the latter, focus moves to the other window).

The code for that can be found on emacswiki under the name switch-window.el. Hope you'll find it useful!

Tags

Emacs el-get switch-window