Replace default font

[parasyte]

This saves about 46 KB overall, and improves the text quality (IMHO).

Before:

After:

As you can see, Oxygen is not the most ideal font. It only supports the Latin character set. Still feels worth the increase in readability and decrease in executable size.

[emilk]

Thanks for the PR!

I agree Comfortaa has some legibility issues (especially lowercase a vs o), but I like the friendly roundness of it. I also like how it gives Egui a distinct feel. In comparison Oxygen looks kind of vanilla and boring (dare I say "corporate"?).

I would like to try out more alternatives. Ideally the font should be both legible and distinct, but that may turn out to be a tall order.

Supporting non-latin script should probably be an opt-in for the size reasons.

Anyway, I am gonna leave the PR open to solicit more opinions, and to mull it over a bit more.

[arirawr]

Agree that Oxygen is considerably easier to read.

[parasyte]

Here's a short list of readable fonts that have "rounded features":

• Titillium Web
• Maven Pro
• Antic
• Carme

All of these are available under the terms of the OFL.

[emilk]

Having tested a few alternatives now, I am leaning towards Ubuntu-Light. One benefit for it is that it also supports a few more characters than most of the proposed alternatives

Ubuntu-Light (proposed):

Comfortaa-Regular (current):

[parasyte]

Keeping this simple, Ubuntu-Light looks good to me.

For supporting more of the Unicode standard and non-Latin languages in general, there is a wealth of in-depth information available. Here are a few selections, which are all written by Rust enthusiasts:

• https://raphlinus.github.io/rust/skribo/text/2019/02/27/text-layout-kickoff.html
• https://yeslogic.com/blog/allsorts-rust-font-shaping-engine.html
• https://kas-gui.github.io/blog/why-kas-text.html

That is to say, yes this ticket should just move forward with a simple font change. Focus on advanced text rendering can happen later independently.

[emilk]

Thanks for those links @parasyte - I've created a tracking issue for further improvements to the text rendering at #56

[emilk]

Font changed to Ubuntu-Light in 428e237