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feat: generate tags for footnotes

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This commit is contained in:
Tobias Schmitz 2025-07-15 16:54:15 +02:00
parent 451b0815ff
commit 728d37efa0
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2 changed files with 10 additions and 10 deletions
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14
crates/typst-layout/src/rules.rs
View File

@ -394,11 +394,11 @@ const FOOTNOTE_RULE: ShowFn<FootnoteElem> = |elem, engine, styles| {
let numbering = elem.numbering.get_ref(styles);
let counter = Counter::of(FootnoteElem::ELEM);
let num = counter.display_at_loc(engine, loc, styles, numbering)?;
let sup = SuperElem::new(num).pack().spanned(span);
let alt = num.plain_text();
let sup = PdfMarkerTag::Label(SuperElem::new(num).pack().spanned(span));
let loc = loc.variant(1);
// Add zero-width weak spacing to make the footnote "sticky".
// TODO(accessibility): generate alt text
Ok(HElem::hole().pack() + sup.linked(Destination::Location(loc), None))
Ok(HElem::hole().pack() + sup.linked(Destination::Location(loc), Some(alt)))
};
const FOOTNOTE_ENTRY_RULE: ShowFn<FootnoteEntry> = |elem, engine, styles| {
@ -415,11 +415,9 @@ const FOOTNOTE_ENTRY_RULE: ShowFn<FootnoteEntry> = |elem, engine, styles| {
};
let num = counter.display_at_loc(engine, loc, styles, numbering)?;
let sup = SuperElem::new(num)
.pack()
.spanned(span)
// TODO(accessibility): generate alt text
.linked(Destination::Location(loc), None)
let alt = num.plain_text();
let sup = PdfMarkerTag::Label(SuperElem::new(num).pack().spanned(span))
.linked(Destination::Location(loc), Some(alt))
.located(loc.variant(1));
Ok(Content::sequence([

6
crates/typst-pdf/src/tags/mod.rs
View File

@ -17,8 +17,8 @@ use typst_library::foundations::{
use typst_library::introspection::Location;
use typst_library::layout::RepeatElem;
use typst_library::model::{
Destination, EnumElem, FigureCaption, FigureElem, HeadingElem, ListElem, Outlinable,
OutlineEntry, TableCell, TableElem, TermsElem,
Destination, EnumElem, FigureCaption, FigureElem, FootnoteEntry, HeadingElem,
ListElem, Outlinable, OutlineEntry, TableCell, TableElem, TermsElem,
};
use typst_library::pdf::{ArtifactElem, ArtifactKind, PdfMarkerTag, PdfMarkerTagKind};
use typst_library::visualize::ImageElem;
@ -141,6 +141,8 @@ pub(crate) fn handle_start(
let link_id = gc.tags.next_link_id();
push_stack(gc, loc, StackEntryKind::Link(link_id, link.clone()))?;
return Ok(());
} else if let Some(_) = elem.to_packed::<FootnoteEntry>() {
TagKind::Note.into()
} else {
return Ok(());
};