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read_fonts/model/font/
source.rs

1//! Font data sources.
2
3use super::{Blob, TableFunction};
4use alloc::sync::Arc;
5use types::Tag;
6
7/// Source for font data.
8#[derive(Clone)]
9pub enum Source {
10    /// A nice flat buffer.
11    Blob(Blob),
12    /// Lazy loader with per-table data provided by a function.
13    TableFunction(TableFunction),
14}
15
16impl<T: Into<Blob>> From<T> for Source {
17    fn from(value: T) -> Self {
18        Self::Blob(value.into())
19    }
20}
21
22impl From<Arc<dyn Fn(Tag) -> Option<Blob> + Send + Sync>> for Source {
23    fn from(value: Arc<dyn Fn(Tag) -> Option<Blob> + Send + Sync>) -> Self {
24        Self::TableFunction(TableFunction::new(value))
25    }
26}
27
28impl From<TableFunction> for Source {
29    fn from(value: TableFunction) -> Self {
30        Self::TableFunction(value)
31    }
32}