Desktop app (#308)

* Implement build profiles and feature policy for offline desktop builds

* Introduce unified cross-platform Settings Hub

* Refactor main settings into a hierarchical page-based navigation model

* Refactor library projection to use shared multiplatform logic

* Refactor UI state consumption by removing intermediate screen models

* Introduce AndroidSharedStateBridge to centralize state mapping and reduction logic

* Refactor state management for tabs, selection, and pinning to use shared bridge logic

* Refactor file type management and validation into a centralized shared module

* Centralize file type resolution and improve handling of unknown types

* Centralize book import logic with SharedImportPlanner

* Refactor magnifier geometry logic and coordinate mapping

* Properly handle orientation changes in scroll-locked PDF reader

* Add screen orientation controls to EPUB and PDF readers

* Implement right-to-left (RTL) pagination support and refactor reader menus

* Separate right-to-left pagination settings for PDF and EPUB

* Ensure PDF page data is scoped by document key for multi tab support

* Implement theme-aware link styling for the epub reader

* Implement jump history for back and forward navigation in the epub reader

* Improve locator handling and navigation logic in paginated reader mode

* Implement stable pagination navigation and location tracking

* Centralize banner message management and auto-dismiss logic in MainViewModel

* Implement zoom and pan state preservation for PDF pan lock mode

* Enhance reader navigation UI and workspace layout management in desktop app

* Refactor reader navigation sidebar and relocate search controls in desktop app

* Enhance reader UI with redesigned selection menus and bottom sheet overlays

* Implement custom highlight palettes and reader theme customization in desktop app

* Implement cross-platform modal layer and refine reader UI styling

* Improve highlight accuracy and implement metadata enrichment on book open in desktop app

* Implement two-page spread layout for paginated reader on desktop

* Implement persistent caching for book loading and pagination in desktop app

* Implement persistent caching for book loading and pagination in desktop app

* Optimize reader settings updates by separating layout and appearance changes in desktop app

* Improve desktop window branding and native Windows styling

* Enhance reader selection interactions and UI across EPUB and PDF viewers in desktop app

* Refine selection handle positioning and interaction logic

* Implement EPUB selection debug logging and improve handle targeting

* Optimize desktop book loading performance and UI responsiveness

* Implement anchored zoom gestures and rendering optimizations for the Desktop PDF viewer.

* Implement smooth zoom preview for the PDF reader in desktop app

* Optimize PDF rendering performance and responsiveness in the desktop reader

* Implement conditional diagnostic logging and update desktop build configuration

* Implemented hierarchical TOC, custom scrollbars, and improved desktop modal handling

* Added management options for annotations and highlights in the sidebar in desktop app

* Implemented `SharedStableOutlinedTextField` and updated text input fields to use `TextFieldValue` for improved cursor and selection stability.

* Refined library filters and enhanced OPDS functionality in desktop app

* Improved EPUB pagination measurement and implemented layout diagnostic logging for desktop app

* Added PPTX support including document parsing, rendering, and indexing

* Improved PPTX rendering and layout accuracy

* Implemented text autofit support for PPTX rendering

* Enhanced PPTX rendering with support for custom geometry, automatic numbering, table styles, and image opacity

* Improved EPUB pagination accuracy and added layout telemetry in desktop app

* Improved folder synchronization with metadata-only mode and hashed sidecar management in desktop app

* Implemented rich text font scaling and migrated desktop ink tools to custom pointer input handling

* Implemented billing account obfuscation

* Implemented hierarchical folder navigation and improved library selection functionality in desktop app

* Implemented platform-aware directory resolution and multi-platform native library support for desktop

* Added full-screen mode for the reader workspace

* Added PDF zoom indicator and interactive vertical scrollbar with page tooltips

* Refactored speech bubble prefetching to use a limited radius and improved ML detector initialization and lifecycle management

* Updated PDF indexing to replace existing page text and removed search result item keys

* Implemented "preparing" foreground notification for TTS service

* Optimized PDF rendering performance by pre-calculating page-specific annotations

* Refactored desktop packaging tasks and improved distribution configuration

* Optimized EPUB parser memory usage and added path traversal protection

* Refactored WorkManager monitoring logic and added work pruning

* Implemented comprehensive resource cleanup and memory management for WebView-based components to prevent memory leaks

* Implemented bitmap size limits and scaling to prevent canvas rendering errors

* Split long text paragraphs into multiple semantic blocks during HTML parsing

* Implemented local ActionMode for text selection to prevent platform crashes

* Refactored PPTX text layout, optimized HtmlParser block detection, and improved banner dismissal logic

* Added desktop startup splash screen and deferred WebView initialization

* Reorganized settings hub and added separate PDF reader defaults

* Implemented embedded cover extraction and metadata support for MOBI and FB2 formats

* Implemented batching for MetadataExtractionWorker and optimized EPUB metadata extraction performance.

* Implemented procedurally generated book covers and replaced static placeholders

* Redesigned search UI with a top bar and results overlay in desktop app

* Added PDF page gap and overlay visibility options and implemented DesktopBookImporter

* Refactored PDF reader UI with tabbed inspector and improved theme background handling in desktop

* Implemented PDF viewport persistence for zoom and scroll positions in desktop app

* Improved desktop fullscreen implementation and state restoration

* Implemented desktop window state persistence

* Implemented flavor-based branding and ProGuard configuration for desktop builds

* Implemented precise reader positioning and improved highlight rendering logic in desktop app

* Added support for user-editable book metadata

* Enhanced book metadata support and integrated info/edit dialogs

* Implemented embedded EPUB metadata editing

* Improved highlight mapping and added custom scrollbar styling for the reader.

* Reduced desktop WebView bundle size by excluding unused locales and runtime files

* Added neutral pan mode as the default PDF interaction state.

* Refactored library empty states and updated primary navigation tabs in desktop app

* Implemented native paginated reader and unified content rendering architecture in desktop epub reader

* Implemented native EPUB image rendering for desktop and improved block layout spacing with margin collapsing.

* Improved pagination overflow detection in desktop

* Implemented multi-block text selection with interactive handles and CFI support in desktop epub pagination
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package com.aryan.reader
import com.aryan.reader.data.RecentFileItem
import com.aryan.reader.data.TagEntity
import com.aryan.reader.shared.AppAction as SharedAppAction
import com.aryan.reader.shared.LibraryAction as SharedLibraryAction
import com.aryan.reader.shared.SharedFolderPathResolver
import com.aryan.reader.shared.SharedLibraryProjectionInput
import com.aryan.reader.shared.SharedLibraryStateProjector
import com.aryan.reader.shared.SharedReaderScreenState
import com.aryan.reader.shared.reduce
internal object AndroidSharedStateBridge {
fun prepareLibraryProjection(
input: LibraryProjectionInput,
folderPathResolver: FolderPathResolver
): AndroidSharedLibraryProjectionContext {
val taggedBooks = input.recentFilesFromDb.withResolvedTags(input.dbTags, input.tagRefs)
val androidBooksById = taggedBooks
.filterNot { it.bookId.endsWith("_reflow") }
.associateBy { it.bookId }
val projectionState = input.state.withAndroidFolderFallbacks(androidBooksById.values)
val sharedInput = SharedLibraryProjectionInput(
state = projectionState.toSharedReaderScreenState(
rawBooks = taggedBooks,
dbTags = input.dbTags
),
booksFromStore = taggedBooks
.filterNot { it.bookId.endsWith("_reflow") }
.map { it.toSharedProjectionBookItem() },
shelfRecords = input.dbShelves.map { it.toSharedShelfRecord() },
shelfRefs = input.shelfRefs.map { it.toSharedBookShelfRef() },
tags = input.dbTags.map { it.toSharedTag() }
)
return AndroidSharedLibraryProjectionContext(
projectionState = projectionState,
sharedInput = sharedInput,
androidBooksById = androidBooksById,
tagEntitiesById = input.dbTags.associateBy { it.id },
folderKeys = projectionState.syncedFolders.map { AndroidSharedFolderProjectionKey(it.uriString, it.name) },
folderPathResolver = SharedFolderPathResolver { item ->
androidBooksById[item.id]?.let(folderPathResolver::relativeFolderSegments).orEmpty()
}
)
}
fun projectLibrary(context: AndroidSharedLibraryProjectionContext): SharedReaderScreenState {
return SharedLibraryStateProjector(context.folderPathResolver).project(context.sharedInput)
}
fun toAndroidState(
base: ReaderScreenState,
sharedState: SharedReaderScreenState,
androidBooksById: Map<String, RecentFileItem>,
tagEntitiesById: Map<String, TagEntity>
): ReaderScreenState {
return sharedState.toAndroidReaderScreenState(
base = base,
androidBooksById = androidBooksById,
tagEntitiesById = tagEntitiesById
)
}
fun reduceLibraryAction(
current: ReaderScreenState,
projectedState: ReaderScreenState,
action: SharedLibraryAction
): ReaderScreenState {
val rawBooks = projectedState.rawLibraryFiles.ifEmpty { current.rawLibraryFiles }
val androidBooksById = (rawBooks + current.contextualActionItems).associateBy { it.bookId }
val reduced = current.toBridgeSharedState(projectedState).reduce(action)
return current.copy(
searchQuery = reduced.searchQuery,
sortOrder = reduced.sortOrder.toAndroidSortOrder(),
libraryFilters = reduced.libraryFilters.toAndroidLibraryFilters(),
contextualActionItems = reduced.selectedBookIds.mapNotNullTo(mutableSetOf()) { androidBooksById[it] },
contextualActionShelfIds = reduced.selectedShelfIds,
libraryScreenStartPage = reduced.libraryScreenStartPage,
recentFilesLimit = reduced.recentFilesLimit
)
}
fun reduceAppAction(
current: ReaderScreenState,
projectedState: ReaderScreenState,
action: SharedAppAction
): ReaderScreenState {
val reduced = current.toBridgeSharedState(projectedState).reduce(action)
return current.copy(
appThemeMode = reduced.appThemeMode.toAndroidAppThemeMode(),
appContrastOption = reduced.appContrastOption.toAndroidAppContrastOption(),
appTextDimFactorLight = reduced.appTextDimFactorLight,
appTextDimFactorDark = reduced.appTextDimFactorDark,
appSeedColor = reduced.appSeedColor,
customAppThemes = reduced.customAppThemes.map { it.toAndroidCustomAppTheme() }
)
}
fun setTabsEnabled(
current: ReaderScreenState,
projectedState: ReaderScreenState,
enabled: Boolean
): ReaderScreenState {
val reduced = current.toBridgeSharedState(projectedState).reduce(SharedAppAction.TabsEnabledChanged(enabled))
if (enabled) return current.withTabStateFrom(reduced)
val activeTab = current.activeTabBookId
return current.copy(
isTabsEnabled = reduced.isTabsEnabled,
openTabIds = if (activeTab == null) emptyList() else listOf(activeTab),
activeTabBookId = activeTab
)
}
fun openBookTab(
current: ReaderScreenState,
projectedState: ReaderScreenState,
bookId: String
): ReaderScreenState {
val reduced = current.toBridgeSharedState(projectedState).reduce(SharedAppAction.BookTabOpened(bookId))
return current.withTabStateFrom(reduced)
}
fun closeBookTab(
current: ReaderScreenState,
projectedState: ReaderScreenState,
bookId: String
): ReaderScreenState {
val reduced = current.toBridgeSharedState(projectedState).reduce(SharedAppAction.BookTabClosed(bookId))
return current.withTabStateFrom(reduced)
}
fun closeAllTabs(current: ReaderScreenState, projectedState: ReaderScreenState): ReaderScreenState {
val reduced = current.toBridgeSharedState(projectedState).reduce(SharedAppAction.AllTabsClosed)
return current.withTabStateFrom(reduced)
}
fun togglePinsForSelectedBooks(
current: ReaderScreenState,
projectedState: ReaderScreenState,
isHome: Boolean
): ReaderScreenState {
val selectedIds = current.contextualActionItems.mapTo(linkedSetOf()) { it.bookId }
if (selectedIds.isEmpty()) return current
val currentPins = if (isHome) current.pinnedHomeBookIds else current.pinnedLibraryBookIds
val idsToToggle = if (selectedIds.all { it in currentPins }) {
selectedIds
} else {
selectedIds - currentPins
}
val reduced = idsToToggle.fold(current.toBridgeSharedState(projectedState)) { state, bookId ->
state.reduce(
if (isHome) {
SharedAppAction.HomePinToggled(bookId)
} else {
SharedAppAction.LibraryPinToggled(bookId)
}
)
}
return if (isHome) {
current.copy(
pinnedHomeBookIds = reduced.pinnedHomeBookIds,
contextualActionItems = emptySet()
)
} else {
current.copy(
pinnedLibraryBookIds = reduced.pinnedLibraryBookIds,
contextualActionItems = emptySet()
)
}
}
fun replaceBookSelectionWithVisibleBooks(
current: ReaderScreenState,
projectedState: ReaderScreenState,
visibleBooks: Collection<RecentFileItem>
): ReaderScreenState {
val visibleIds = visibleBooks.mapTo(linkedSetOf()) { it.bookId }
val selectedIds = current.contextualActionItems.mapTo(linkedSetOf()) { it.bookId }
val action = if (visibleIds.isNotEmpty() && selectedIds.containsAll(visibleIds)) {
SharedLibraryAction.SelectionCleared
} else {
SharedLibraryAction.BookSelectionReplaced(visibleIds)
}
return reduceLibraryAction(
current = current,
projectedState = projectedState,
action = action
)
}
private fun ReaderScreenState.toBridgeSharedState(projectedState: ReaderScreenState): SharedReaderScreenState {
return toSharedReaderScreenState(
rawBooks = projectedState.rawLibraryFiles.ifEmpty { rawLibraryFiles },
dbTags = projectedState.allTags.ifEmpty { allTags }
)
}
private fun ReaderScreenState.withTabStateFrom(sharedState: SharedReaderScreenState): ReaderScreenState {
return copy(
isTabsEnabled = sharedState.isTabsEnabled,
openTabIds = sharedState.openTabIds,
activeTabBookId = sharedState.activeTabBookId
)
}
}
internal data class AndroidSharedLibraryProjectionContext(
val projectionState: ReaderScreenState,
val sharedInput: SharedLibraryProjectionInput,
val androidBooksById: Map<String, RecentFileItem>,
val tagEntitiesById: Map<String, TagEntity>,
val folderKeys: List<AndroidSharedFolderProjectionKey>,
val folderPathResolver: SharedFolderPathResolver
)
internal data class AndroidSharedFolderProjectionKey(
val uriString: String,
val name: String
)
private fun ReaderScreenState.withAndroidFolderFallbacks(books: Collection<RecentFileItem>): ReaderScreenState {
val knownFolders = syncedFolders.mapTo(mutableSetOf()) { it.uriString }
val missingFolders = books
.mapNotNull { it.sourceFolderUri }
.filterTo(linkedSetOf()) { it !in knownFolders }
.map { uri -> SyncedFolder(uriString = uri, name = "Local Folder", lastScanTime = 0L) }
return if (missingFolders.isEmpty()) {
this
} else {
copy(syncedFolders = syncedFolders + missingFolders)
}
}