Idea: Overlay fonts to compare vertical positions &c

[clauseggers]

Hi Just Over in Glyphsland there is a very handy plugin that lets us overlay the Italic with the Roman (and vice versa). It occurred to me that such a feature would also be a very handy feature in FontGoggles. It would let users compare not only styles, but different fonts, different versions, different fileformats, &c.

It looks like this in the Glyphs plugin:

A simulated rendering would look something like this:

[justvanrossum]

Would it be instead of showing two fonts on individual lines? Or in addition to? When you have two fonts loaded, should it show "the other font" as reference? What if you have three fonts open?

[clauseggers]

To make it as simple as possible I think it should just be a global setting. If the user turn it on ‘overlay’ then all the files dragged into the window will be overlayed on top of each other (and therefore there will only be one line shown), and coloured in random colours.