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feat: Add per-book letterbox fill override

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Introduce BookSettings utility for per-book settings stored in
the book's cache directory (book_settings.bin). Add "Letterbox Fill"
option to the EPUB reader menu that cycles Default/Dithered/Solid/None.
At sleep time, the per-book override is loaded and takes precedence
over the global setting for all book types (EPUB, XTC, TXT).

Co-authored-by: Cursor <cursoragent@cursor.com>
This commit is contained in:
cottongin
2026-02-13 16:07:38 -05:00
parent 0c71e0b13f
commit 6aa0b865c2
7 changed files with 167 additions and 8 deletions
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14
src/activities/reader/EpubReaderMenuActivity.cpp
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@@ -68,6 +68,14 @@ void EpubReaderMenuActivity::loop() {
updateRequired = true;
return;
}
if (selectedAction == MenuAction::LETTERBOX_FILL) {
// Cycle through: Default -> Dithered -> Solid -> None -> Default ...
int idx = (letterboxFillToIndex() + 1) % LETTERBOX_FILL_OPTION_COUNT;
pendingLetterboxFill = indexToLetterboxFill(idx);
saveLetterboxFill();
updateRequired = true;
return;
}
// 1. Capture the callback and action locally
auto actionCallback = onAction;
@@ -139,6 +147,12 @@ void EpubReaderMenuActivity::renderScreen() {
const auto width = renderer.getTextWidth(UI_10_FONT_ID, value);
renderer.drawText(UI_10_FONT_ID, contentX + contentWidth - 20 - width, displayY, value, !isSelected);
}
if (menuItems[i].action == MenuAction::LETTERBOX_FILL) {
// Render current letterbox fill value on the right edge of the content area.
const auto value = letterboxFillLabels[letterboxFillToIndex()];
const auto width = renderer.getTextWidth(UI_10_FONT_ID, value);
renderer.drawText(UI_10_FONT_ID, contentX + contentWidth - 20 - width, displayY, value, !isSelected);
}
}
// Footer / Hints