39 lines
2.4 KiB
Markdown
39 lines
2.4 KiB
Markdown
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# Renderer provenance
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This renderer follows the measured source-span layout and aligned overhead
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annotations from Fluxtapose's `reading-chapter-ui`, including its later highlight
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and underline work. The recovered source was the Nix-cached package at
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`/nix/store/2ka0jcdpyijmpjsrwqkap682l4xk88zi-source`, rather than the earlier
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prose-probe prototype. Fluxtapose's `reading-app-2` references package revision
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`4e479c1a74c13d7467071da60b98fc148128dd99`; exact cache revision is unconfirmed.
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Recovered file SHA-256:
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| File | SHA-256 |
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| ------------------ | ---------------------------------------------------------------- |
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| text-layout.ts | e6c330f60b7f1c16235454d1ce9c7656ef2379e744322ac13826753831e13d72 |
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| text-rendering.ts | ce2ea4f15f4d3b86d4b8f72d6ac7221cb131c996d19ec24052d80e3235012f77 |
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| text-processing.ts | 7d8a72aa2d8791ad37351d1c7c872419b288b5e0e51214983a29ff48c8465038 |
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The original shared source/annotation flow is preserved: every annotation source
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has one row per physical text line. Long words and translations request horizontal
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padding around their source ranges and continue across subsequent lines. A forward
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capacity constraint replaces the ten-pass spacing loop; collisions never create
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additional annotation rows. Conflicting ranges from the same source share an
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ordered horizontal run. Row heights use all glyphs/ranges, and mixed font sizes
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share a baseline. Text keeps original
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UTF-16 offsets, including leading spaces and grapheme clusters. Measurement is
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injected for tests and uses a bounded cache in browsers. Canvas drawing and
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selection have no Konva or memoizee dependency.
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Legal wrap positions use the pinned `@cto.af/linebreak` 4.0.3 implementation of
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Unicode 17 UAX #14, intersected with Intl grapheme boundaries. Intl word
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segmentation remains responsible for word targeting and preferred word affinity.
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Source text and overhead labels use the same line-breaking layer. Closing marks
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stay with preceding text, opening brackets stay with following text, and
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annotation padding cannot insert a break inside those punctuation spans. Oversized
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words and numbers use emergency tailoring of the alphabetic/numeric rules while
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retaining punctuation rules; viewports narrower than an inseparable span still
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require clipping. The package's Yarn lock and generated Nix dependency closure
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retain the library and its transitive dependencies for reproducible browser builds.
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