Adding fonts at runtime

[leifniem]

Hi,

i was wondering if there is a way to load fonts at runtime. I tried figuring out a way for a few hours and ran into the limitation, that, as a far as i understand, i need access to the Window to modify the fonts in the list.

For context: I am trying to give an overview of fonts in a folder and their appearance and got the loading part in place and need a way to get them into the UI.

Thanks for all the great work, this framework feels quite mature for still being in development!

[ecton]

Apologies for not getting back to you yesterday, I have family visiting.

If you're just wanting to load the fonts at the start of the application, you can use MakeWidget::into_window() to convert any widget into a Window, which you can add the fonts to.

To add fonts after the window has been opened hasn't been designed yet, but I definitely want to support that as well.

Thanks for trying out Cushy!

[leifniem]

Absolutely no apologies necessary :)

My use case would be the latter, since the program in question would be a font manager and therefore add and remove source folders containing fonts.

And happy to test Cushy! I have quite limited knowledge of Rust so far, but for not being a WebView-based UI-Framework this is quite accessible :)

[ecton]

There's probably a lot more missing functionality than this that you'll run into making a font manager, but I've implemented this in 3762bc6. dynamic-fonts.rs is an example that accepts a path to a font and previews it.

Of note, cosmic-text's font fallback logic is currently fairly strict -- I spent a lot of time debugging this implementation only to discover the issue was that the two fonts I was testing had non-400 weight (which is the default weight in Cushy). Cosmic Text used a fallback in that situation. I've opened up an issue in their repository, but if you're having trouble getting a font to render, check that all of the face information matches what is set as the style for the widget.

Good luck!