finalize w/ systemfonts & ragg

[matthewstern]

I'm creating a PR as draft for @sarahcmap's work on updating finalize_plot() to work with ragg. Work isn't done yet, but with multiple potential contributors at this point, this will be useful to track what's still to do. The goal is to get plot finalization working with ragg, svglite, and systemfonts. See #127 for context.

Sarah wrote on 5/4 in teams:

png, tiff, jpeg, and pdf exports look ok. svg title doesn't appear to be bold, and I still haven't work out the mode='window' situation.

I able to remove mode = "window" and related code, but didn't get to look at svg outputs.

[matthewstern]

@sarahcmap, one thought is whether the svglite package is up to date on your machine? Presumably the package was updated to use systemfonts at some point relatively recently.

In fact, we may want to require a certain version of that package, presuming older versions don't handle fonts correctly and new ones do?

[dlcomeaux]

OK. @matthewstern and I think that at this stage, it might make sense to move ahead and use the original svg device. There appear to be some underlying problems in how Whitney, as registered, is being interpreted by the svglite package, as discussed here. In the interests of getting the rest of 1.2 implemented, I suggest that we merge this in its current form into 1.2 so that we can bring that into the master.

I will create a consolidated issue for a future enhancement to shift from svg to svglite, and/or to at least add svglite as an option (per Noel's suggestion here).

@sarahcmap since you've been working on this, are you OK with that approach? @nmpeterson , any concerns from you?

[matthewstern]

amused that I can't "approve" a PR that I opened, but this looks good to me. I'll do more testing on the larger 1.2 branch once this is merged in, but all the code changes seem fine to me.

[sarahcmap]

Thanks @dlcomeaux and @matthewstern for troubleshooting! I think your plan sounds fine Daniel.