browser/gui: Prime the font system w/ a 'monospace' font

[robinlinden]

DejaVu Sans Mono for Linux for now because that's what happened to live on the machine I ran fc-match monospace on. This will be looked up in a more reasonable fashion in the future.

robin@q:~/code/hastur$ fc-match monospace
DejaVuSansMono.ttf: "DejaVu Sans Mono" "Book"

[Zer0-One]

This is fine for now, but probably good to note that the first match for "monospace" might be a serif font, which might look a bit funky in a browser. On my system, you get LiberationMono-Regular.ttf: "Liberation Mono" "Regular", whereas the firefox default, for example, is actually LiberationSans-Regular.ttf: "Liberation Sans" "Regular".

[robinlinden]

Yeah, for Linux we won't be hardcoding fonts like this in the future and probably actually use something like fontconfig (or parse the files) ourselves, and as you say, we'll probably want to care about more things than just a font being monospace.

If DejaVuSansMono.ttf isn't found, the font-engine will still fall back to trying to find a font w/ monospace in the file name right now. For Windows it might make sense to hardcode a font and let the user override it from the UI somewhere, but the real reason for this is that I need a monospace font so I can check my layout work. Feel free to add a monospace font that works well on your system to the Linux side of the array. :P