logo: simplify basic usage, allow for extended functionality

[cagix]

Currently, to use your own logo, you first have to define a custom partial "layouts/partials/logo.html" and reference an image or the like there (see https://mcshelby.github.io/hugo-theme-relearn/basics/customization/index.html#change-the-logo).

This works, but is rather cumbersome for users. Could a similar solution be implemented for logos like for favicons? I.e. as default, an image file called "logo.png" (or logo.svg) is searched for in the folder "static/images/" and if I have other needs, I need to create the extra partial?

This way, the logo and the favicon would be treated symmetrically.

[McShelby]

I am hesitant.

For the logo this is rather difficult, because it's not only the logo to display but posibliy a title, too. This title may or may not be given in the logo image but as separate text.

While the first case often result in a rectangualar logo, the latter usually (but not always) results in a squarish logo.

Also, often there are font requirements for the logo title, if given as text - as well as color requirements if a light or dark style was selected.

This is only an incomplete list of some of the options. I could go on and on...

Even if only a stripped down solution is implemented in the theme itself, I bet it would end up in a lot of support questions.

It's not off the table, but I have to think about it.

[cagix]

Well, I see two use cases here: (a) I have just a logo (image), and (b) I need something fancier (e.g. logo plus text or some extra formatting).

• In the first case (simple logo/image) it would be much easier for your users - they just need to store the image file to a certain location using a certain name. No need for extra custom partials ...
• In the second case it's just the current way and users have to implement their custom partial.

Edit: This would also be backwards compatible, i.e. won't break any existing setups :)

[McShelby]

I started working on this. But as I expected, this ends in some extensive (but backwards compatible) changes to do it "right".