bevy_text/
font_loader.rs

1use crate::Font;
2use bevy_asset::{io::Reader, AssetLoader, LoadContext};
3use bevy_reflect::TypePath;
4use cosmic_text::skrifa::raw::ReadError;
5use thiserror::Error;
6
7#[derive(Default, TypePath)]
8/// An [`AssetLoader`] for [`Font`]s, for use by the [`AssetServer`](bevy_asset::AssetServer)
9pub struct FontLoader;
10
11/// Possible errors that can be produced by [`FontLoader`]
12#[non_exhaustive]
13#[derive(Debug, Error)]
14pub enum FontLoaderError {
15    /// The contents that could not be parsed
16    #[error(transparent)]
17    Content(#[from] ReadError),
18    /// An [IO](std::io) Error
19    #[error(transparent)]
20    Io(#[from] std::io::Error),
21}
22
23impl AssetLoader for FontLoader {
24    type Asset = Font;
25    type Settings = ();
26    type Error = FontLoaderError;
27    async fn load(
28        &self,
29        reader: &mut dyn Reader,
30        _settings: &(),
31        _load_context: &mut LoadContext<'_>,
32    ) -> Result<Font, Self::Error> {
33        let mut bytes = Vec::new();
34        reader.read_to_end(&mut bytes).await?;
35        let font = Font::try_from_bytes(bytes)?;
36        Ok(font)
37    }
38
39    fn extensions(&self) -> &[&str] {
40        &["ttf", "otf"]
41    }
42}
bevy_text/font_loader.rs

bevy_text/
font_loader.rs
