Several CJK passes had a copy per writing direction. Merge them without
changing their results:
- allocate_bounded_expansion and bounded_expansion divide justify and
distribute slack for both axes. Each axis still collects its own gaps;
the horizontal one checks no-break controls over the source range and
the vertical one at cell edges, as before.
- PolicyBoundaries holds the break and emergency rules at each grapheme
of a paragraph. The horizontal overlong-word and atomic-overflow passes
and the vertical pairwise column planner read it. relax_overlong_words
moves next to retain_atomic_overflow and shares annotation_ranges.
- TextLayoutPolicy::pair_spacing_em gives the compression and script gap
that both axes apply with their own caps.
- cjk_chars keeps the Han, kana, hangul and punctuation ranges. Ranges
that differ on purpose stay separate there, with a note on why.
- OverhangClaims tracks the ruby overhang an earlier reading takes.
- horizontal_zhuyin_glyphs places Zhuyin for position data and painting.
- paint_horizontal_annotations paints warichu, emphasis and ruby; the
emoji overlay keeps its place between the marks and the ruby.
AI-assisted-by: claude-opus-5-5
TextLayoutPolicy had nine flat variants that mixed language, Chinese
region and Korean wrap. It is now Plain, Japanese, Chinese(ChineseRegion)
or Korean(KoreanWrap), and the layout code asks it named questions
(uses_jlreq, plans_breaks, keeps_overlong_units, reopens_overlong_words,
bounded_justify, needs_joiner, normalizes_western_spaces,
uses_clreq_positions, ...) instead of comparing variants.
Paragraph parses its language once, when the language or the Korean wrap
changes, and copies the policy to its spans. Span code no longer builds a
policy from the tag with a dummy Korean wrap, and the emphasis and
underline positions take the policy instead of a Chinese flag.
A LanguageTag parser now serves both the layout policy and the CJK font
choice. It also accepts '_' as a separator, as the font choice did, so
a tag such as "ja_JP" now selects the Japanese policy.
The korean-wrap byte decodes through a new exported RawKoreanWrap enum
(Syllable=0, SpacesOnly=1, KeepWords=2) with the same byte values.
AI-assisted-by: claude-opus-5-5
Add named Chinese punctuation presets and a Korean keep-words mode for
horizontal and vertical layout. Preserve the saved spaces-only mode and
keep source offsets stable through safe emergency wrapping.
Apply bounded CJK spacing and justification, expose the new choices in the
sidebar, and document preset bounds and remaining release checks.
Verify renderer, frontend, common and exporter tests, both WASM builds,
and sample save/reload plus PNG, PDF and SVG exports. Existing CI failures
remain documented in the layout notes.
AI-assisted-by: GPT-6
Lay out horizontal and vertical Japanese text with kinsoku, ruby,
emphasis, warichu, tate-chu-yoko and proportional font features.
Carry the layout through glyph paths, SVG export and text selection.
Update the Rust and ClojureScript binary formats together, including
the editor bridge and headless exporter. Resolve CJK fallback fonts
and add renderer tests and font fixtures.
* ✨ Add text and @font-face to WASM SVG export
Emit selectable <text> elements and inject @font-face rules that
reference the font URLs registered at load time. Text fill bypasses
save_layer wrappers that SkSVGDevice drops. Text strokes are deferred
to a follow-up PR.
* 🐛 Strip trailing commas from Skia SVG text positions
Skia's SVG backend appends a trailing comma to per-glyph x/y lists.
Firefox rejects the malformed attribute and drops glyph positioning,
making exported text vanish or mis-render.
