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Memoize font creation

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This commit is contained in:
Laurenz Stampfl 2025-03-26 22:24:03 +01:00
parent fe15f0c4e9
commit 4fdda7d5d0
1 changed files with 15 additions and 10 deletions
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25
crates/typst-pdf/src/text.rs
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@ -68,16 +68,7 @@ fn convert_font(
if let Some(font) = gc.fonts_forward.get(&typst_font) { if let Some(font) = gc.fonts_forward.get(&typst_font) {
Ok(font.clone()) Ok(font.clone())
} else { } else {
let font_data: Arc<dyn AsRef<[u8]> + Send + Sync> = let font = build_font(typst_font.clone())?;
Arc::new(typst_font.data().clone());
let font =
match krilla::text::Font::new(font_data.into(), typst_font.index(), true) {
None => {
let font_str = display_font(&typst_font);
bail!(Span::detached(), "failed to process font {font_str}");
}
Some(f) => f,
};
gc.fonts_forward.insert(typst_font.clone(), font.clone()); gc.fonts_forward.insert(typst_font.clone(), font.clone());
gc.fonts_backward.insert(font.clone(), typst_font.clone()); gc.fonts_backward.insert(font.clone(), typst_font.clone());
@ -86,6 +77,20 @@ fn convert_font(
} }
} }
#[comemo::memoize]
fn build_font(typst_font: Font) -> SourceResult<krilla::text::Font> {
let font_data: Arc<dyn AsRef<[u8]> + Send + Sync> =
Arc::new(typst_font.data().clone());
match krilla::text::Font::new(font_data.into(), typst_font.index(), true) {
None => {
let font_str = display_font(&typst_font);
bail!(Span::detached(), "failed to process font {font_str}");
}
Some(f) => Ok(f),
}
}
#[derive(TransparentWrapper)] #[derive(TransparentWrapper)]
#[repr(transparent)] #[repr(transparent)]
struct PdfGlyph(Glyph); struct PdfGlyph(Glyph);