* docs(plan): design for cross-page corner auto-turn (#4741)
Extract useAutoPageTurn so the corner-dwell page turn works for instant
highlight drags and for range-editor handle drags, not just native text
selection. Decouple the dwell liveness from the DOM selection and anchor
each range's non-dragged end to a DOM position so it survives the scroll.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
* docs(plan): add keyboard turn-on-cross to cross-page design (#4741)
Shift+Arrow selection adjust extends into the off-screen next column
without turning the page. Fold it into the feature with an immediate
turn-on-cross (no dwell) in the keyboard path, reusing the page-edge
geometry from useAutoPageTurn.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
* feat(reader): extend selections and highlights across pages (#4741)
Extract the corner-dwell auto page-turn (#1354) into useAutoPageTurn,
decoupled from the DOM selection, so every selection gesture can drive
it in paginated mode, not just native text selection:
- Instant Highlight drag: feed the finger corner into the dwell machine
and DOM-anchor the highlight start so it survives the page scroll.
- SelectionRangeEditor and AnnotationRangeEditor handle drags: feed the
dragged-handle corner; anchor the non-dragged end to a DOM position so
the edited range spans pages (the annotation editor previously resolved
both ends from window coordinates and lost the previous page).
- Shift+Arrow keyboard selection adjust: turn the page immediately when
the extended focus leaves the visible page, so the growing selection
stays in view.
An after-turn re-emit rebuilds each gesture's range from the held
position so the selection extends onto the new page without waiting for
the next move.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Huang Xin