77 lines
1.8 KiB
Rust
77 lines
1.8 KiB
Rust
// SPDX-License-Identifier: MIT OR Apache-2.0
|
|
|
|
use alloc::{
|
|
string::{String, ToString},
|
|
sync::Arc,
|
|
vec::Vec,
|
|
};
|
|
|
|
use crate::{Attrs, Font, FontMatches};
|
|
|
|
/// Access system fonts
|
|
pub struct FontSystem {
|
|
locale: String,
|
|
db: fontdb::Database,
|
|
}
|
|
|
|
impl FontSystem {
|
|
pub fn new() -> Self {
|
|
let locale = "en-US".to_string();
|
|
|
|
let mut db = fontdb::Database::new();
|
|
{
|
|
db.set_monospace_family("Fira Mono");
|
|
db.set_sans_serif_family("Fira Sans");
|
|
db.set_serif_family("DejaVu Serif");
|
|
}
|
|
|
|
Self { locale, db }
|
|
}
|
|
|
|
pub fn new_with_locale_and_db(locale: &str, db: fontdb::Database) -> Self {
|
|
Self {
|
|
locale: locale.to_string(),
|
|
db,
|
|
}
|
|
}
|
|
|
|
pub fn locale(&self) -> &str {
|
|
&self.locale
|
|
}
|
|
|
|
pub fn db(&self) -> &fontdb::Database {
|
|
&self.db
|
|
}
|
|
|
|
// Clippy false positive
|
|
#[allow(clippy::needless_lifetimes)]
|
|
pub fn get_font<'a>(&'a self, id: fontdb::ID) -> Option<Arc<Font<'a>>> {
|
|
let face = self.db.face(id)?;
|
|
match Font::new(face) {
|
|
Some(font) => Some(Arc::new(font)),
|
|
None => {
|
|
log::warn!("failed to load font '{}'", face.post_script_name);
|
|
None
|
|
}
|
|
}
|
|
}
|
|
|
|
pub fn get_font_matches<'a>(&'a self, attrs: Attrs) -> Arc<FontMatches<'a>> {
|
|
let mut fonts = Vec::new();
|
|
for face in self.db.faces() {
|
|
if !attrs.matches(face) {
|
|
continue;
|
|
}
|
|
|
|
if let Some(font) = self.get_font(face.id) {
|
|
fonts.push(font);
|
|
}
|
|
}
|
|
|
|
Arc::new(FontMatches {
|
|
locale: &self.locale,
|
|
default_family: self.db.family_name(&attrs.family).to_string(),
|
|
fonts,
|
|
})
|
|
}
|
|
}
|