54106ca9b0
The web build has no system-font access, so CAD text in non-Latin scripts (Cyrillic, Greek, CJK, …) rendered as nothing — build_fallback was a hard None on wasm (#141). Instead, ship per-script Noto subsets under web/fonts (one alphabet per file, SIL OFL 1.1) and fetch them lazily over HTTP the first time a drawing uses that script, then outline glyphs with ttf-parser. - web_font: Script enum + script_of (char → script font), a per-script store with lazy fetch, and a pending queue drained by the app loop. - CJK is split by language (chinese/japanese/korean). Han ideographs share code points but differ by language, so the shared block is routed by the document's $DWGCODEPAGE (932→JP, 949→KR, GB/936→CN); kana is always Japanese, Hangul always Korean. Re-tessellates when the language changes. - build_fallback (wasm) outlines from the fetched subset; clear_fallback_cache lets glyphs that missed while a font was in flight reappear on load. - PollWebFonts subscription (web only) + WebFontLoaded message drive fetches. - Trunk copy-dir serves web/fonts; nothing is bundled into the native binary (desktop keeps using system fonts). Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
46 lines
2.4 KiB
Shell
Executable file
46 lines
2.4 KiB
Shell
Executable file
#!/usr/bin/env bash
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# Regenerate the per-script Noto subsets served to the web build.
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# Each script lives in its own TTF so a browser only fetches the alphabets a
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# drawing actually uses. Source: Noto fonts (SIL OFL 1.1 — see OFL.txt).
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#
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# Requires: pip install --break-system-packages fonttools brotli
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set -euo pipefail
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RAW="https://github.com/notofonts/notofonts.github.io/raw/main/fonts"
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sub() { python3 -m fontTools.subset "$1" --unicodes="$2" --output-file="$3" \
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--no-hinting --desubroutinize --layout-features='*' --notdef-outline \
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--name-IDs='*' --recalc-bounds 2>/dev/null; }
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dl() { curl -sL -o "$1" "$2"; }
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# Latin / Cyrillic / Greek share one Noto source.
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dl /tmp/NotoSans.ttf "$RAW/NotoSans/hinted/ttf/NotoSans-Regular.ttf"
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sub /tmp/NotoSans.ttf "U+0000-024F,U+1E00-1EFF,U+2000-206F,U+20A0-20BF,U+2122,U+2190-21FF,U+2200-22FF" latin.ttf
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sub /tmp/NotoSans.ttf "U+0400-04FF,U+0500-052F,U+2DE0-2DFF,U+A640-A69F" cyrillic.ttf
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sub /tmp/NotoSans.ttf "U+0370-03FF,U+1F00-1FFF" greek.ttf
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# One source per remaining script.
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dl /tmp/NotoArabic.ttf "$RAW/NotoSansArabic/hinted/ttf/NotoSansArabic-Regular.ttf"
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sub /tmp/NotoArabic.ttf "U+0600-06FF,U+0750-077F,U+08A0-08FF,U+FB50-FDFF,U+FE70-FEFF" arabic.ttf
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dl /tmp/NotoHebrew.ttf "$RAW/NotoSansHebrew/hinted/ttf/NotoSansHebrew-Regular.ttf"
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sub /tmp/NotoHebrew.ttf "U+0590-05FF,U+FB1D-FB4F" hebrew.ttf
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dl /tmp/NotoThai.ttf "$RAW/NotoSansThai/hinted/ttf/NotoSansThai-Regular.ttf"
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sub /tmp/NotoThai.ttf "U+0E00-0E7F" thai.ttf
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dl /tmp/NotoDeva.ttf "$RAW/NotoSansDevanagari/hinted/ttf/NotoSansDevanagari-Regular.ttf"
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sub /tmp/NotoDeva.ttf "U+0900-097F,U+A8E0-A8FF" devanagari.ttf
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# CJK comes from the noto-cjk repo (CFF/OTF; ttf-parser reads CFF outlines) and
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# is split by language: Chinese, Japanese and Korean each get their own file.
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# Han ideographs share code points but differ in glyph shape, so each language
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# ships its own. These are the heavy ones — lazy-loaded per language only when a
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# drawing in that language is opened.
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CJK="https://github.com/notofonts/noto-cjk/raw/main/Sans/OTF"
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dl /tmp/NotoSC.otf "$CJK/SimplifiedChinese/NotoSansCJKsc-Regular.otf"
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sub /tmp/NotoSC.otf "U+3000-303F,U+4E00-9FFF,U+FF00-FFEF" chinese.ttf
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dl /tmp/NotoJP.otf "$CJK/Japanese/NotoSansCJKjp-Regular.otf"
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sub /tmp/NotoJP.otf "U+3000-303F,U+3040-30FF,U+31F0-31FF,U+4E00-9FFF,U+FF00-FFEF" japanese.ttf
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dl /tmp/NotoKR.otf "$CJK/Korean/NotoSansCJKkr-Regular.otf"
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sub /tmp/NotoKR.otf "U+1100-11FF,U+3130-318F,U+AC00-D7A3" korean.ttf
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