* Added support for AI and Cloud credits in the Pro flavor.
* Implemented credit-based authentication and authorization for AI features and Cloud TTS.
* Updated AI feature access and purchase handling to a credit-based system.
* Refactored and enhanced the Text-to-Speech (TTS) system with persistent caching and a redesigned UI.
* Improved TTS cache management by organizing audio files by book title and adding a detailed cache storage UI.
* Refactored the TTS service to use a WebSocket-based Gemini Live connection for cloud audio generation.
* Removed the TTS cache settings tab and simplified voice sample playback by removing local caching logic.
* Implemented a low-latency streaming mechanism for Cloud TTS using a custom `ConcurrentInputStream` and `ExoPlayer` data source.
* Improved cloud TTS stability and prefetching logic in `TtsService` and `TtsPlaybackManager`.
* Implemented AI summarization caching and cost tracking in the EPUB reader.
* Enhanced chapter summary caching and UI feedback.
* limit summaries for pro users to 10 per day
* Implemented local caching for Cloud TTS audio chunks.
* Removed the Free tier tab from `ProScreen` and simplified the subscription interface. Updated tab logic to focus on Pro and Credits, including a new cost breakdown section for AI and Cloud TTS features.
* Refactored HTML parsing to include all child nodes during content chunking and semantic block parsing.
* Improved image rendering consistency in epub pagination reader
* Improved HTML parsing in `HtmlParser.kt` to better handle complex nested structures
* Improved CSS styling support in the epub paginated reader for word spacing and text decorations.
* Implemented scroll throttling in `epub_reader.js` to improve performance during scroll events
* Improved CFI resolution and scrolling reliability in EPUB reader
* Optimized PaginatedReader performance by caching text decorations.
* Implemented batching for recent file database operations to handle large datasets and introduced `RecentFileSummary` to optimize data retrieval by excluding heavy JSON columns.
* Improved navigation stability by wrapping `navController.navigate` and `popBackStack` calls in a try-catch block to handle `IllegalStateException` during concurrent transitions. Additionally, refined the backstack check for the main route to prevent redundant pops.
* feat(tts): redesign TTS controls with overlay UI and cache management
* Expanded and improved the TTS (Text-to-Speech) capabilities, particularly for Cloud voices.
* Improved TTS playback control and cache management.
* Integrated the TTS cache manager into the settings sheet and improved the TTS configuration UI.
* Updated `DeviceVoicesTab` to respect the current TTS mode, disabling voice selection when not in `BASE` mode.
* Improved error handling and state management for Cloud TTS in `TtsService` and `TtsPlaybackManager`.
* Improved TTS voice selection UI and sample playback logic.
* Updated `TtsUtils` and `TtsService` to remove `chunkIndex` from TTS cache filenames. Refined the cache file naming convention to rely on text and speaker hashes, and updated the cache file filter logic to correctly identify speakers in both legacy and new filename formats.
* Optimized tile rendering and state propagation in PDF viewer
* Added "Expand All", "Collapse All", and "Locate" functionality to the Table of Contents in both EPUB and PDF readers.
* Added sign-in requirement for credit purchases and improved purchase migration logic.
* Updated `EpubReaderTts` to support authenticated TTS requests by passing an auth token provider. The `ttsController.start` method now includes an `authToken` retrieved via `getAuthToken` and explicitly sets the `playbackSource` to "READER".
* feat(ai): replace summarization popup with a comprehensive AI Hub Bottom Sheet
* Improved locator logic and block traversal in `BookPaginator`.
* Updated AI features and Cloud TTS logic.
* Added manual clear and auto-reset functionality for AI summaries and recaps
* Optimized file importing, EPUB parsing, and TTS playback concurrency.
* Restricted TTS mode to BASE in OSS flavor and fixed TTS mode persistence in PDF viewer
* Bump version to 1.0.43(44)
* Refactored the EPUB reader to use localized string resources instead of hardcoded strings across multiple components.
* Refactored the PDF viewer and annotation components to use centralized string resources instead of hardcoded text.
* Updated `strings.xml` with extensive translation hints and localization metadata.
* Optimized PDF tile rendering performance and quality.
* Added support for adjusting TTS voice speed and pitch.
* Updated the TTS settings UI and playback logic to support real-time parameter adjustments.
* Added horizontal scrolling to the PDF viewer bottom toolbar and updated tool arrangement to use fixed spacing.
* Refined cross-page selection and text extraction in `PaginatedReader`
* Updated EPUB reader styling logic to refine typography and layout controls.
* Bump version to 1.0.42(43)
* Improved local folder sync and file management by migrating sidecar metadata to a dedicated subfolder and enhancing book ID stability.
* Optimized folder sync and increased synced folder limits.
* Added support for managing active tabs in the `HomeScreen`.
* Added support for strict file type filtering when picking documents.
* Added a "Remove Edge Padding" option in "Visual Options"
* Added support for paragraph gap settings in the EPUB vertical reader.
* Added support for adjustable paragraph gaps in the paginated reader.
* fix(epub-pagination): ensure custom fonts override embedded epub fonts
* feat(epub): allow overlapping highlights and resolve gesture selection conflicts
* Added support for ODT and FODT file formats.
* Improved `OdtParser` to support enhanced document formatting and external assets
* Added support for viewing CSV, TSV, JSON, XML, logs, and source code files by dynamically converting them to HTML.
* Improved navigation and search result highlighting in the EPUB reader
* refactor: implement JIT chunk restoration for robust navigation
- Fixes search and bookmark navigation failing in same-chapter transitions.
- Introduced JIT (Just-in-Time) HTML restoration in `epub_reader.js` to
re-populate virtualized chunks before CFI resolution or search scrolling.
- Synchronized search highlighting and user highlights within
newly-restored chunk segments.
- Improved search navigation accuracy by mapping occurrences to
relative chunk indices.
* Implemented a custom text selection engine for the paginated EPUB reader to support cross-page selection and improved handle interaction.
* Implemented management of external file behavior and improved library filtering.
* Added support for toolbar customization in the EPUB reader.
* Added support for toolbar customization in the PDF reader.
* fix: rendering during auto-scroll and navigation on long pages
* Added a "Scroll to Top" feature to the auto-scroll controls in both EPUB and PDF readers.
* Updated folder synchronization logic and redesigned the file type filter dialog.
* Fixed CFI generation and navigation stability in the EPUB reader.
* Improved CFI scrolling and position calculation in the EPUB reader by implementing text node traversal using `TreeWalker`. This ensures accurate positioning and scrolling when a CFI offset spans multiple fragmented text nodes.
* fix fb2 multiline titles, retain footnotes, and prevent stream leaks
- Fix FB2 titles with multiple paragraphs by inserting breaks/spaces
- Prevent resource leaks by properly closing InputStreams in all importers
- Retain "notes" and "comments" sections in FB2 instead of skipping them
- Add support for FB2 poem, stanza, cite, and link tags
* Implement persistence for zoom and pan states when pan lock is enabled in the PDF reader.
* Added `FileTypeBadge` to home and library screens
* Bump version to 1.0.41(42)
* Added support for highlight notes in EPUB reader
* fix(epub annots): ensure persistent highlights and preserve notes on color change
- refactor: unified processAndAddHighlight across scroll and paginated modes
- fix: re-apply highlights to virtualized DOM elements on chunk load
- fix: replaced '|' with ';;' in JS bridge to prevent CFI parsing errors
* feat(epub): redesign annotation UX with theme-aware Bottom Sheet
* Updated highlight handling to use full CFI strings instead of splitting into parts during deletion and style updates. Adjusted `processAndAddHighlight` to return the final CFI and updated the delete button UI to use a contained button style.
* Added support for notes in PDF highlights.
* Implemented support for custom highlight colors in the PDF reader.
* Improved PDF annotation notes and theme handling in the bottom sheet.
* Improved eraser hit detection and added horizontal scrolling to AnnotationDock
* fix: lock scroll tracking during PDF rotation to prevent page jumping in vertical mode
* Implemented a multi-tab reading system for the PDF viewer.
* Redesigned the About dialog on homescreen.
* improved bulk file import support
* Implemented document caching and improved tab restoration in the PDF viewer.
* Implemented native link detection and information extraction in `pdfium_bridge.cpp` and integrated it into `PdfPageComposable.kt`. This includes adding `getLinkInfoAtPoint` to `NativePdfiumBridge` to handle URI, GoTo, and RemoteGoTo/Launch actions, and updating the tap gesture logic to prioritize native link handling.
* Fixed index bounds and layout padding calculation in PdfViewerScreen
* FolderSyncWorker: update supported file types in getFileType
* Extract hardcoded strings to `strings.xml` and `plurals.xml`
* Extract hardcoded strings to `strings.xml` and `plurals.xml`
* Extract hardcoded strings to `strings.xml` and `plurals.xml` in MainViewModel
* Extract hardcoded strings to `strings.xml` and `plurals.xml` in Common.kt
* Extract hardcoded strings to `strings.xml` and `plurals.xml` in Epub Reader
* Add visual options and seamless transitions to the EPUB reader
* Add support for DOCX file format
* Refine padding and status bar inset handling in Epub pagination mode
* Add file size parameter for recent files and sorting
* Refactor book data cleanup logic into a centralized method
* Bump version to 1.0.40(41)
* Add OPDS catalog support for book discovery and downloading
* Implement OPDS search, improved book discovery, and enhanced UI details.
* Improve OPDS search and catalog management
* Add authentication support and extended metadata to the OPDS reader.
* Add support for OPDS 2.0 (JSON) feeds
* Enhance OPDS book downloading with progress tracking and multi-format support.
* Enhance OPDS book management and UI
* Add support for OPDS-PSE (Page Streaming Extension) streaming
* Improve OPDS streaming and catalog management
* feat(EPUB): adapt status bar icon visibility to reader theme
Pass the reader's active isDarkTheme state to EpubReaderSystemUiController to ensure status bar icons automatically switch between light and dark to remain visible against the selected background/page color.
* Implement storage tracking and optimize cache management
This commit introduces a `StorageTracker` to monitor disk usage and implements several optimizations to prevent cache bloat and handle orphaned files.
* refactor: unify book extraction paths and fix cache leaks
- Replaced random UUID and title-based hashing with stable `bookId` for extraction directories across Epub, Mobi, and FB2 parsers.
- Standardized all temporary extraction paths to `cache/imported_file_${bookId}`.
- Updated MainViewModel and MetadataExtractionWorker to provide the mandatory `bookId` during parsing.
- Ensured `clearImportedFileCache` successfully targets the correct directories on book deletion.
- Added a legacy cleanup task in `sweepOrphanedCache` to reclaim storage from old `extracted_epubs` folders.
* fix(pdf): handle NoClassDefFoundError for PdfPasswordException
Updated the PDF loading logic in PdfViewerScreen to catch Throwable
instead of Exception. This prevents the app from crashing when the
underlying pdfium library attempts to throw a PdfPasswordException
that is missing from the runtime classpath (NoClassDefFoundError).
* fix(tts): set language before voice to prevent variant reset
* EpubReaderScreen: increase scroll-hide ignore duration for tap toggles
Increase the threshold for ignoring tap toggles after bars are hidden by scrolling from 250ms to 400ms. This prevents accidental UI toggles caused by "sloppy taps" immediately following a scroll action.
* fix: resolve large bitmap crash on tall PDF pages
- Caps base layer bitmap dimensions to 3000px to prevent GPU texture limit crashes.
- Enables tiled rendering for large pages even at 1x zoom to maintain sharpness.
- Optimizes PdfBitmapPool to support rectangular bitmap allocations.
* Common.kt: ensure unique keys in voice list
* fix: handle ActivityNotFoundException in folder sync screen
* Improve file deletion logic and fix chapter index bounds in epub reader
* fix: ensure WebView bridge callbacks run on UI thread
This resolves a WebViewMethodCalledOnWrongThreadViolation in vertical mode that was preventing chapter chunks from loading beyond the initial viewport.
* Add "Keep Screen On" feature to PDF and Epub readers.
* Add `rawLibraryFiles` to `MainViewModel` and improve file path resolution in `SharedComposables`.
Specifically:
- Updated `MainViewModel` state and UI logic to track and provide unfiltered library files.
- Enhanced file path formatting in `SharedComposables` to better handle Document, Tree, and primary storage URIs.
- Added scrollable support for long text values in `DetailItem` composable.
- Passed `rawLibraryFiles` to `FolderSyncScreen` to ensure sync logic uses the base file list.
* Update info bar background and text colors in EpubReaderScreen to match the selected theme.
* Prevent accidental UI bar toggles immediately after scrolling in EPUB vertical mode.
* feat: implement EPUB highlights sync and legacy migration
- Implement Cloud and Local Folder sync for EPUB highlights.
- Add highlight JSON serialization/deserialization helpers in EpubReaderAnnotations.
- Implement automatic migration of highlights from SharedPreferences to the Database on book open.
- Add cleanup logic to remove legacy SharedPreferences data after successful DB migration.
- Update RecentFilesRepository to trigger local folder metadata sync when highlights are modified.
- Update FolderSyncWorker to pull highlights and custom names from linked folder metadata.
* Update intent filters
* Improve PDF rendering quality and performance.
- Set `FilterQuality.High` when drawing base bitmaps and high-res tiles in `PdfPageComposable`.
- Implement `inSampleSize` calculation in `UniversalDocument` to optimize memory usage during region decoding.
- Enhance bitmap drawing quality by adding `ANTI_ALIAS_FLAG` and `DITHER_FLAG` to the paint configuration.
* Implement custom reader themes for PDF viewer.
This change integrates the `ReaderThemePanel` and theme management logic into the PDF viewer, allowing users to apply preset or custom themes. Previously, the PDF viewer only supported a simple dark mode toggle.
Specific changes:
- Moved `ReaderTheme`, `ReaderTexture`, and theme-related utility functions from `EpubReaderScreen.kt` to `Common.kt` to allow sharing between EPUB and PDF readers.
- Updated `PdfPageComposable` to use `activeTheme` instead of `isDarkMode`, implementing a `ColorMatrix` to apply custom background and text colors to PDF pages.
- Replaced the dark mode toggle in `PdfViewerScreen` with a theme selection button that opens `ReaderThemePanel`.
- Introduced `PdfBuiltInThemes` to provide PDF-specific theme presets.
* Reset page transformation on constraint changes and refine tile rendering logic.
- Reset scale to 1.0 and offset to zero in `PdfPageComposable` when constraints change.
- Update `UniversalDocument` to use floating-point precision for source rectangle calculations and `RectF` for destination mapping to improve rendering accuracy.
* Improve eraser hit detection and visual thickness settings in PDF reader.
* Added support for FB2 book format
* Add support for CBZ files by introducing a `ReaderDocument` abstraction.
Key changes:
- Defined `ReaderDocument`, `ReaderPage`, and `ReaderTextPage` interfaces to provide a unified API for different document types.
- Implemented `PdfDocumentWrapper` and `CbzDocumentWrapper` to handle PDF and CBZ files respectively.
- Updated `PdfViewerScreen`, `PdfPageComposable`, and `MainViewModel` to use the new unified document interfaces.
- Added CBZ file type detection and cover generation logic.
* Add support for CBR and CB7 comic book formats
- Add `me.zhanghai.android.libarchive` dependency to support RAR and 7z archives.
- Implement `ArchiveDocumentWrapper` using `libarchive` to handle CBZ, CBR, and CB7 files uniformly, replacing the previous CBZ-only implementation.
- Update `MainViewModel` and `DocumentFactory` to recognize and process `.cbr` and `.cb7` extensions and their associated MIME types.
- Add support for extracting and caching cover images from CBR and CB7 archives.
- Update UI components (`HomeScreen`, `LibraryScreen`, `AppNavigation`) to handle the new comic book file types.
* build: bump version to 1.0.38 and improve CFI page lookup logic
* fix: resolve duplicate TTS audio and broken highlights in Vertical Mode
Updated the text extraction logic in epub_reader.js to pick only the most granular matching elements, preventing duplication when elements like <p> are nested inside <li>.
* Improved PDF embedded annotation hit detection logic
* Updated EPUB and PDF reader logic to improve position tracking and TTS stability.
Key changes:
- Refined CFI and locator handling in `EpubReaderScreen` with improved initialization.
- Updated `BookPaginator` to more accurately calculate text offsets in chunks and improve CFI matching logic.
- Modified `TtsPlaybackManager` to insert media items at the correct index, ensuring proper playback order.
- Simplified `EpubReaderTts` page scrolling by removing conditional checks for backward jumps.
- Disabled OCR fallback in `PdfViewerScreen` during text extraction for TTS.
* Updated extractTextWithCfiFromTop to use getBoundingClientRect for identifying the starting block
* Added support for filtering file types in synced folders
* Added support for custom file names and enhanced file information dialog
* added feedback option in the homescreen drawer
* Implemented a limit for number of recent files displayed on the home screen
* Optimized high-res scale logic in PdfVerticalReader and adjusted layout padding in PdfViewerScreen
* Fixed position sync between both PDF reading modes
* Enabled annotation rendering in PDF tiles and improved scrolling state detection in `PdfVerticalReader` by introducing an `isDragging` flag.
- Implemented `fitZoom` calculation to properly center and scale pages, especially in landscape orientation.
- Updated `clampValues` and animation bounds to ensure content is correctly centered when zoomed out.
- Refined double-tap-to-zoom logic to toggle between `fitZoom`, 1x, and 2.5x scales.
- Replaced manual frame-based zooming with `Animatable.animateTo` for smoother transitions.
- Added `configChanges` to `MainActivity` in `AndroidManifest.xml` to handle orientation and screen size changes manually.
- Reduced delays and improved reliability of initial page snapping in `PdfViewerScreen`.
* Implemented a custom theme engine for the EPUB reader, allowing users to switch between built-in themes (System, Light, Dark, Sepia, Slate, and OLED).
Key changes include:
- Added `ReaderThemePanel` and theme selection logic to `EpubReaderScreen`.
- Introduced a theme persistence layer using SharedPreferences.
- Updated `ChapterWebView` and `epub_reader.js` to dynamically apply background and text colors via JavaScript, including improved contrast adjustment for inline styles.
- Enhanced `CssParser` and `ContentStyler` in the paginated reader to adapt CSS colors based on the active theme's background and text luminance.
- Integrated theme-specific background and text colors into `PaginatedReaderScreen` and its layout components.
- Added a theme palette icon to the reader controls.
* Added custom theme builder and texture support to EPUB reader
* Refactored color picker(PDF) into shared components and enhanced EPUB theme editor
* Updated theme customization UI and improved WebView theme application efficiency
* Updated page flip animation to use paper color with a theme-based tint
* Improved state restoration during paginated reader reconfiguration
- Refactored `SingleFileImporter` to use a streaming approach for HTML imports, improving memory efficiency for large files.
- Implemented `writeHtmlChapter` helper to handle segmented HTML processing and chapter generation.
- Introduced `PdfiumCoreProvider` to provide a singleton instance of `PdfiumCoreKt`.
- Updated `PdfToHtmlGenerator` and `PdfViewerScreen` to use the shared `PdfiumCoreProvider` instance.
* Added print functionality to PDF viewer
* feat(pdf): add interactive button support and visibility reveal heuristic
* Moved search state management to MainViewModel and improved search UI interaction.
* Updated `pdfiumandroid` to version 2.0.0 and handled resulting API changes, including nullable page/text page returns and revised native pointer access.
increased compileSdk to 36.
* Fixed Table of Contents (TOC) truncation bug and improved the TOC UI in `PdfViewerScreen`.
- Implemented `getFixedTableOfContents` using reflection to bypass a library issue where sibling nodes were incorrectly truncated during traversal.
- Enhanced the TOC drawer with a nested, expandable tree structure using the new `PdfTocTreeItem` component.
- Added a custom `VerticalScrollbar` with draggable support for better navigation within long TOC lists.
- Integrated `animateColorAsState` and `animateFloatAsState` for smoother UI transitions in the TOC and scrollbar.
- Optimized TOC loading by flattening the tree structure and managing expansion states with `rememberSaveable`.
* Improved zoom pivot calculation and interaction handling in PdfVerticalReader
* Fixed high-res PDF tile bleeding by implementing clipRect in PdfBitmapLayer
* fix(pdf): resolve zoom stuttering, in pagination mode, by removing eager scale snapping
* Added book pinning and library filtering functionality
* Updated folder sync logic, improved metadata extraction, and added persistent banner message while syncing
* build: bump version to 1.0.37 (38)
* Added print functionality to PDF viewer
* feat(pdf): add interactive button support and visibility reveal heuristic
* Moved search state management to MainViewModel and improved search UI interaction.
* Updated `pdfiumandroid` to version 2.0.0 and handled resulting API changes, including nullable page/text page returns and revised native pointer access.
increased compileSdk to 36.
* Fixed Table of Contents (TOC) truncation bug and improved the TOC UI in `PdfViewerScreen`.
- Implemented `getFixedTableOfContents` using reflection to bypass a library issue where sibling nodes were incorrectly truncated during traversal.
- Enhanced the TOC drawer with a nested, expandable tree structure using the new `PdfTocTreeItem` component.
- Added a custom `VerticalScrollbar` with draggable support for better navigation within long TOC lists.
- Integrated `animateColorAsState` and `animateFloatAsState` for smoother UI transitions in the TOC and scrollbar.
- Optimized TOC loading by flattening the tree structure and managing expansion states with `rememberSaveable`.
* Improved zoom pivot calculation and interaction handling in PdfVerticalReader
* Fixed high-res PDF tile bleeding by implementing clipRect in PdfBitmapLayer
* fix(pdf): resolve zoom stuttering, in pagination mode, by removing eager scale snapping
* Added `TooltipIconButton` and integrated tooltips for tool icons in app bars
* Added external translate and search support for EPUB and PDF readers
* docs: refine project overview and update build instructions in readme
* Fixed PDF reading position restoration during orientation change
* Refactored navigation logic in `EpubReaderScreen` and `PaginatedReader` to improve position restoration and UI consistency.
- Renamed `isNavigatingToBookmark` to `isNavigatingToPosition` and updated the overlay UI to reflect general position navigation.
- Added an orientation change listener to restore the reading position in `VERTICAL_SCROLL` mode using the last known locator.
- Improved highlight navigation in `VERTICAL_SCROLL` and `PAGINATED` modes, including chunk injection logic for highlights and fallback pagination logic.
- Implemented an anchor locator mechanism in `PaginatedReader` to preserve the reading position during layout constraint changes (e.g., orientation or resizing).
* Replaced PDF-to-Markdown reflow with an enhanced PDF-to-HTML generator.
Specific changes include:
- Replaced `PdfToMarkdownGenerator` and `PdfReflowGenerator` with `PdfToHtmlGenerator`.
- Added native bridge methods in `NativePdfiumBridge.kt` and `pdfium_bridge.cpp` to extract character bounding boxes, page objects, and image pixels.
- Implemented vertical merging of text and images in `PdfToHtmlGenerator` to maintain document layout.
- Added logic to detect and filter repeating headers and footers across PDF pages.
- Updated `ReflowWorker` to generate `.html` files instead of `.md` files and updated `FileType` handling.
- Simplified `SingleFileImporter` by removing dependencies on the legacy Markdown generator.
* Updated PDF to HTML generation to include page breaks and split HTML files into individual chapters based on page markers.
* Added junk character filtering and normalization to PDF text extraction
* - Added `allRecentFiles` to `ReaderScreenState` to track all files, including reflowed versions.
- Updated `recentFiles` in `MainViewModel` to filter out reflowed files (`_reflow`) from the main library view.
- Implemented `deleteBookPermanently` in `MainViewModel` to handle book deletion and cache cleanup.
- Added a "Delete Text View" option to the `EpubReader` controls for reflowed files.
- Improved reflow file detection in `PdfViewerScreen` by checking against `allRecentFiles`.
* Implemented a centralized data-saving mechanism in `PdfViewerScreen` using a debounced `saveAllData` function. This refactor consolidates the saving of annotations, text boxes, highlights, bookmarks, and scroll positions, adding lifecycle-aware triggers and a mutex to ensure data integrity during pauses or document navigation.
* Optimized PDF selection and annotation performance by offloading heavy operations to background threads and improving UI responsiveness.
- Moved PDF page/text opening, character range calculations, and text extraction to `Dispatchers.IO`.
- Wrapped UI updates in `updateSelectionVisuals` and selection logic with `withContext(Dispatchers.Main)`.
- Implemented a more efficient `Popup`-based magnifier to replace manual offsets and transformations.
- Updated `PdfSelectionMenuPopup` properties to prevent focus and click-outside dismissal conflicts.
* Added support for reading and displaying embedded PDF annotations.
Changes include:
- Added JNI bindings in `NativePdfiumBridge` and `pdfium_bridge.cpp` to extract annotation count, subtypes, rectangles, and string values (Contents, NM, IRT, T) using PDFium.
- Introduced `EmbeddedAnnotation` data class to represent PDF annotations and their reply threads.
- Implemented annotation extraction logic in `PdfPageComposable` to fetch, group, and map embedded annotations (Sticky Notes, Highlights, etc.) to screen coordinates.
- Updated `PdfSelectionMenuPopup` to support displaying and copying comment threads.
- Improved selection menu positioning and hit detection for annotations.
- Added a safety check to recycle bitmaps in `PdfTile` rendering if handover to the main thread fails.
* Improved comment thread UI
* fix: reproducible build paths for native libs and strip unused brotli sos
* build: improve build reproducibility in CMake
* build: disable dependencies information in APK and Bundle
* perf(pdf): native Pdfium-based reflow engine with auto-open
Migrate PDF-to-Markdown reflow generation from PDFBox to a custom
native implementation using Pdfium. This transition improves
processing speed by ~10x and significantly reduces memory overhead.
- Native JNI Bridge: Implemented `pdfium_bridge.cpp` using `dlopen`
to hook into the existing `libpdfium.so` memory space.
- Optimized Extraction: Replaced character-by-character JNI calls
with bulk array retrieval (`getPageFontSizes`, `getPageFontWeights`),
drastically reducing JNI boundary overhead.
- Enhanced Accuracy: Improved Markdown formatting logic by using
native font weight (bold) and relative font size variance (headers).
- Thread Safety: Refactored generator to process pages sequentially
while synchronized with the global `PdfiumCore.lock` to ensure
stability across concurrent UI operations.
- Seamless UX: Implemented a reactive auto-open system in the
PDF viewer that tracks user intent and navigates to the reflow
view immediately upon background task completion.
* Improved PDF to Markdown conversion and added cache cleanup.
- Implemented automated cleanup of imported file caches when deleting books.
- Enhanced `PdfToMarkdownGenerator` with support for font flags (italics), improved kerning, and smarter paragraph wrapping.
- Updated `NativePdfiumBridge` and C++ JNI code to extract font information flags from PDFium.
* Implemented seamless file switching and enhanced reflow transition logic.
Key changes include:
- Added `switchToFileSeamlessly` to `MainViewModel` to handle state transitions and navigation when switching between PDF and reflowed text views.
- Updated `generateAndImportReflowFile` to support automatic opening of the generated file at a specific page/chapter.
- Integrated `NavigationEvent` and `CompletableDeferred` to manage asynchronous navigation and state updates during file switches.
- Modified `EpubReaderScreen` and `PdfViewerScreen` to pass the current position when toggling between PDF and text modes.
- Updated `AppNavigation` to move navigation logic out of the `NavHost` and added loading overlays to viewers to improve UI feedback during transitions.
* Implemented long-press gestures(on the left and right region) for rapid scrolling(to top or bottom) in Musician Mode for both EPUB and PDF readers.
* Added support for book-specific reader settings and redesigned the format adjustment UI.
* perf: implement persistent caching and parallel parsing for single-file imports
- Replaced random UUID generation with bookId-based pathing in SingleFileImporter to enable cache reuse.
- Added a JSON metadata fast-path to return EpubBook objects instantly on subsequent opens for MD, TXT, and HTML.
- Parallelized Markdown chapter parsing using Coroutines (async/awaitAll) to leverage multicore CPUs.
* feat(pdf): implement native text highlighting and interactive selection menu
- Add `PdfUserHighlight` data model to track page index, character ranges, and normalized coordinates.
- Redesign `PdfSelectionMenuPopup` to match the EPUB reader style, featuring a color palette row and a deletion option.
- Integrate highlight rendering into the `PdfPageSelectionsLayer` using Canvas drawing.
- Add hit-testing to `detectTapGestures` to allow users to tap existing highlights to change colors or remove them.
* Implemented PDF highlight persistence, sync, and exporting.
* Improved PDF highlight exporting and visibility logic
- Fixed PDF highlight rendering by correctly calculating coordinates and merging adjacent rectangles into lines.
- Updated `PdfExporter` to include highlights in the exported document and added debug logging.
- Corrected visibility check in `PdfPageComposable` to account for vertical offsets.
- Enhanced `PdfViewerScreen` highlight creation to use merged line rectangles
* Refactored annotation synchronization logic and improved background sync reliability.
- Refactored JSON bundle creation and extraction into reusable helper functions.
- Improved stale file detection by checking all annotation types (ink, text, layout, highlights, text boxes).
- Added background annotation downloading to `SyncWorker`
- Implemented duplicate file cleanup in `GoogleDriveRepository` during uploads.
- Added a `showFeedback` flag to `syncFolderMetadata` to control UI visibility during background operations.
- Fixed a potential data loss edge case by aborting Firestore sync if the bundle upload fails.
* Improved highlight interaction and management in PDF viewer
- Implemented hit tolerance for highlight selection to improve touch detection accuracy.
- Added logic to shift highlight page indices when adding or deleting pages.
- Included highlights in the auto-pruning check for empty pages.
- Added a "Highlights" tab to the navigation drawer to list, navigate to, and delete user highlights.
* perf: fix Home and Library screen stutter by removing main thread file checks
* feat(pdf): implement straight-line highlighter snap
- Added "Straight Line" toggle to highlighter settings popup with persistent state.
- Implemented "rubber-band" drawing effect for highlighters with cardinal direction snapping (0°, 90°, 180°, 270°).
- Optimized gesture loops in Vertical and Paginated readers to respond instantly to setting toggles.
- Rewrote eraser hit detection using point-to-line segment distance math for pixel-perfect erasure of straight lines.
- Added `SyncedFolder` data class and transitioned from a single `syncedFolderUri` to a list of `syncedFolders`.
- Implemented logic to add, remove, and persist multiple synced folders using JSON in shared preferences, including a migration path for legacy single-folder settings.
- Updated `FolderSyncWorker` to iterate through all registered folders and added an annotation sidecar preloading optimization to reduce file I/O during sync.
- Redesigned the "Folder Sync" UI in `LibraryScreen` to display a list of active folders with individual management options and a 3-folder limit.
- Refined permission handling to request both read and write access for synced folders.
* Added support for external dictionary apps and a dictionary settings sheet.
* Refactored external dictionary integration and improved package visibility
- Updated `AndroidManifest.xml` with `<queries>` for common dictionary apps and intent actions (`PROCESS_TEXT`, `SEARCH`, `SEND`) to support Android 11+ package visibility.
- Refactored `ExternalDictionaryHelper` to streamline dictionary discovery using `Intent.ACTION_PROCESS_TEXT` and `colordict.intent.action.SEARCH`.
- Added a package blocklist in `ExternalDictionaryHelper` to filter out system services (e.g., Samsung Pass, GMS) from dictionary lists.
- Simplified `launchDictionary` logic to prioritize `PROCESS_TEXT` intents.
- Fixed a bug in `PdfViewerScreen` to only show the dictionary upsell dialog when `useOnlineDictionary` is enabled.
* Refactored dictionary settings into a dialog and updated dictionary selection logic.
- Renamed `DictionarySettingsSheet` to `DictionarySettingsDialog` and converted it from a bottom sheet to a formal dialog.
- Redesigned the dictionary settings UI with a clearer distinction between AI and external app modes.
- Added a "Search" option to the external dictionary list that triggers a web search.
- Updated `ExternalDictionaryHelper` to include a package blocklist and support for generic web search intents.
- Simplified `PdfHelper` by removing Pro user checks for the "Dictionary" action.
- Updated icons for dictionary settings across the EPUB and PDF readers.
- Refactored `BlockStyle` to replace unified border/radius fields with explicit properties for all four sides and corners.
- Overhauled `CssParser` to correctly handle CSS border shorthands (`border-bottom`, `border-width`, etc.) and multi-value `border-radius`.
- Implemented `drawCssBorders` custom modifier to render side-specific borders, styles (dashed/dotted), and background clipping.
- Updated `Paginator` measurement logic to calculate block height and splitting points based on individual side widths.
Background pre-processing for single-file imports (MD/TXT) was generating empty DB cache entries because it only looked at RAM content. This caused position saves in Vertical Mode to fail. This fix ensures that an empty cache entry triggers a disk-read fallback to generate valid semantic blocks on-demand.
