Huang Xin 0f0b4279a7 perf(reader): memoize global-annotation fan-out per section (#4575) (#4579) ...

Highlighting recurring text (e.g. main-character names) as global
annotations made page turning very laggy. The `progress` effect
re-fans-out every global annotation across every rendered section on
EVERY page turn, and each pass re-walks the section DOM, recomputes
`view.getCFI()` for every occurrence, and tears down + recreates an SVG
overlay per match. The overlays already exist after the first pass, so
this is pure wasted work — profiled at ~25–45ms of synchronous
main-thread time per page turn for 6 names / 226 occurrences across 2
rendered chapters, multiplied on slower mobile hardware.

Memoize, per live section `Document`, which global notes have been
expanded (signature embeds `updatedAt`/style/color/text). Subsequent
page turns short-circuit to ~0ms. Keying on the `Document` makes
invalidation automatic: a re-rendered section gets a fresh document (and
fresh overlayer) so its overlays are rebuilt, while edits/recolors bump
`updatedAt` and toggling global off clears the memo.

Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

2026-06-14 17:27:52 +02:00

..

readest-app

perf(reader): memoize global-annotation fan-out per section (#4575) (#4579)

2026-06-14 17:27:52 +02:00

readest.koplugin

fix(koplugin): upload local book cover so synced books show a cover (#4374) (#4385)

2026-05-31 17:36:23 +02:00