73 lines
1.6 KiB
Rust
73 lines
1.6 KiB
Rust
// SPDX-License-Identifier: MIT OR Apache-2.0
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use alloc::{
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string::{String, ToString},
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sync::Arc,
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vec::Vec,
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};
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use crate::{Attrs, Font};
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/// Access system fonts
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#[derive(Debug)]
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pub struct FontSystem {
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locale: String,
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db: fontdb::Database,
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}
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impl FontSystem {
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pub fn new() -> Self {
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let locale = "en-US".to_string();
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let mut db = fontdb::Database::new();
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{
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db.set_monospace_family("Fira Mono");
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db.set_sans_serif_family("Fira Sans");
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db.set_serif_family("DejaVu Serif");
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}
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Self { locale, db }
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}
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pub fn new_with_locale_and_db(locale: String, db: fontdb::Database) -> Self {
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Self { locale, db }
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}
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pub fn locale(&self) -> &str {
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&self.locale
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}
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pub fn db(&self) -> &fontdb::Database {
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&self.db
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}
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pub fn db_mut(&mut self) -> &mut fontdb::Database {
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&mut self.db
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}
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pub fn get_font(&self, id: fontdb::ID) -> Option<Arc<Font>> {
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get_font(&self.db, id)
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}
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pub fn get_font_matches(&mut self, attrs: Attrs) -> Arc<Vec<fontdb::ID>> {
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let ids = self
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.db
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.faces()
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.filter(|face| attrs.matches(face))
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.map(|face| face.id)
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.collect::<Vec<_>>();
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Arc::new(ids)
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}
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}
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fn get_font(db: &fontdb::Database, id: fontdb::ID) -> Option<Arc<Font>> {
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let face = db.face(id)?;
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match Font::new(face) {
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Some(font) => Some(Arc::new(font)),
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None => {
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log::warn!("failed to load font '{}'", face.post_script_name);
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None
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}
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}
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}
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