diff options
| -rw-r--r-- | crates/typst-pdf/src/font.rs | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/crates/typst-pdf/src/font.rs b/crates/typst-pdf/src/font.rs index 6c6e7682..fd719799 100644 --- a/crates/typst-pdf/src/font.rs +++ b/crates/typst-pdf/src/font.rs @@ -117,7 +117,7 @@ pub fn write_fonts(context: &WithGlobalRefs) -> (PdfChunk, HashMap<Font, Ref>) { // Write the /ToUnicode character map, which maps glyph ids back to // unicode codepoints to enable copying out of the PDF. let cmap = create_cmap(glyph_set, glyph_remapper); - chunk.cmap(cmap_ref, &cmap.finish()); + chunk.cmap(cmap_ref, &cmap).filter(Filter::FlateDecode); let subset = subset_font(font, glyph_remapper); let mut stream = chunk.stream(data_ref, &subset); @@ -258,11 +258,13 @@ pub fn improve_glyph_sets(glyph_sets: &mut HashMap<Font, BTreeMap<u16, EcoString } } -/// Create a /ToUnicode CMap. +/// Create a compressed `/ToUnicode` CMap. +#[comemo::memoize] +#[typst_macros::time(name = "create cmap")] fn create_cmap( glyph_set: &BTreeMap<u16, EcoString>, glyph_remapper: &GlyphRemapper, -) -> UnicodeCmap { +) -> Arc<Vec<u8>> { // Produce a reverse mapping from glyphs' CIDs to unicode strings. let mut cmap = UnicodeCmap::new(CMAP_NAME, SYSTEM_INFO); for (&g, text) in glyph_set.iter() { @@ -272,6 +274,5 @@ fn create_cmap( cmap.pair_with_multiple(cid, text.chars()); } } - - cmap + Arc::new(deflate(&cmap.finish())) } |