cottongin/crosspoint-reader-mod
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prerender book covers and thumbnails when opening a book for the first time

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Moves cover/thumbnail generation from lazy (Home screen, Sleep screen) into
each reader activity's onEnter(). On first open, generates all needed BMPs
(cover, cover_crop, thumbnails for all theme heights) with a "Preparing
book..." progress popup. Subsequent opens skip instantly when files exist.

Co-authored-by: Cursor <cursoragent@cursor.com>
This commit is contained in:
cottongin
2026-02-12 16:13:55 -05:00
parent e798065a5c
commit 905f694576
4 changed files with 81 additions and 0 deletions
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5
src/components/UITheme.h
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@@ -27,5 +27,10 @@ class UITheme {
const BaseTheme* currentTheme;
};
// Known theme thumbnail heights to prerender when opening a book for the first time.
// These correspond to homeCoverHeight values across all themes (Lyra=226, Base=400).
static constexpr int PRERENDER_THUMB_HEIGHTS[] = {226, 400};
static constexpr int PRERENDER_THUMB_HEIGHTS_COUNT = 2;
// Helper macro to access current theme
#define GUI UITheme::getInstance().getTheme()