/*
* Episteme Reader - A native Android document reader.
* Copyright (C) 2026 Episteme
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see .
*
* mail: epistemereader@gmail.com
*/
// PdfViewerScreen.kt
@file:Suppress("COMPOSE_APPLIER_CALL_MISMATCH")
package com.aryan.reader.pdf
import android.Manifest
import android.annotation.SuppressLint
import android.app.Activity
import android.content.Context
import androidx.compose.ui.input.key.onKeyEvent
import androidx.compose.ui.semantics.clearAndSetSemantics
import androidx.compose.ui.geometry.lerp
import androidx.compose.ui.input.key.Key
import androidx.compose.ui.input.key.key
import androidx.compose.ui.input.key.type
import android.content.pm.PackageManager
import android.graphics.Bitmap
import android.graphics.RectF
import android.net.Uri
import android.os.Build
import android.os.ParcelFileDescriptor
import android.provider.OpenableColumns
import android.util.Base64
import androidx.activity.compose.BackHandler
import androidx.activity.compose.rememberLauncherForActivityResult
import androidx.activity.result.contract.ActivityResultContracts
import androidx.annotation.OptIn
import androidx.annotation.RequiresApi
import androidx.compose.animation.AnimatedVisibility
import androidx.compose.animation.core.Animatable
import androidx.compose.animation.core.animateDpAsState
import androidx.compose.animation.core.animateFloatAsState
import androidx.compose.animation.fadeIn
import androidx.compose.animation.fadeOut
import androidx.compose.animation.slideInVertically
import androidx.compose.animation.slideOutVertically
import androidx.compose.foundation.BorderStroke
import androidx.compose.foundation.Canvas
import androidx.compose.foundation.Image
import androidx.compose.foundation.background
import androidx.compose.foundation.clickable
import androidx.compose.foundation.gestures.detectDragGestures
import androidx.compose.foundation.gestures.detectDragGesturesAfterLongPress
import androidx.compose.foundation.interaction.MutableInteractionSource
import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Box
import androidx.compose.foundation.layout.BoxWithConstraints
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.Row
import androidx.compose.foundation.layout.Spacer
import androidx.compose.foundation.layout.WindowInsets
import androidx.compose.foundation.layout.fillMaxHeight
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.height
import androidx.compose.foundation.layout.ime
import androidx.compose.foundation.layout.offset
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.layout.size
import androidx.compose.foundation.layout.statusBars
import androidx.compose.foundation.layout.systemBars
import androidx.compose.foundation.layout.width
import androidx.compose.foundation.layout.windowInsetsPadding
import androidx.compose.foundation.lazy.LazyColumn
import androidx.compose.foundation.lazy.itemsIndexed
import androidx.compose.foundation.pager.HorizontalPager
import androidx.compose.foundation.pager.rememberPagerState
import androidx.compose.foundation.selection.selectable
import androidx.compose.foundation.selection.selectableGroup
import androidx.compose.foundation.shape.CircleShape
import androidx.compose.foundation.shape.RoundedCornerShape
import androidx.compose.foundation.text.BasicTextField
import androidx.compose.foundation.text.KeyboardActions
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.automirrored.filled.ArrowBack
import androidx.compose.material.icons.filled.ArrowDownward
import androidx.compose.material.icons.filled.ArrowUpward
import androidx.compose.material.icons.filled.Brush
import androidx.compose.material.icons.filled.Check
import androidx.compose.material.icons.filled.Edit
import androidx.compose.material.icons.filled.Fullscreen
import androidx.compose.material.icons.filled.FullscreenExit
import androidx.compose.material.icons.filled.Info
import androidx.compose.material.icons.filled.KeyboardArrowDown
import androidx.compose.material.icons.filled.KeyboardArrowUp
import androidx.compose.material.icons.filled.Lock
import androidx.compose.material.icons.filled.LockOpen
import androidx.compose.material.icons.filled.Menu
import androidx.compose.material.icons.filled.MoreVert
import androidx.compose.material.icons.filled.Save
import androidx.compose.material.icons.filled.Search
import androidx.compose.material.icons.filled.Share
import androidx.compose.material.icons.filled.Star
import androidx.compose.material.icons.filled.Visibility
import androidx.compose.material.icons.filled.VisibilityOff
import androidx.compose.material3.AlertDialog
import androidx.compose.material3.Button
import androidx.compose.material3.CircularProgressIndicator
import androidx.compose.material3.DrawerValue
import androidx.compose.material3.DropdownMenu
import androidx.compose.material3.DropdownMenuItem
import androidx.compose.material3.ExperimentalMaterial3Api
import androidx.compose.material3.FloatingActionButton
import androidx.compose.material3.FloatingActionButtonDefaults
import androidx.compose.material3.HorizontalDivider
import androidx.compose.material3.Icon
import androidx.compose.material3.IconButton
import androidx.compose.material3.ListItem
import androidx.compose.material3.ListItemDefaults
import androidx.compose.material3.MaterialTheme
import androidx.compose.material3.MenuDefaults
import androidx.compose.material3.ModalDrawerSheet
import androidx.compose.material3.ModalNavigationDrawer
import androidx.compose.material3.OutlinedTextField
import androidx.compose.material3.RadioButton
import androidx.compose.material3.Scaffold
import androidx.compose.material3.Slider
import androidx.compose.material3.SnackbarDuration
import androidx.compose.material3.SnackbarHost
import androidx.compose.material3.SnackbarHostState
import androidx.compose.material3.SnackbarResult
import androidx.compose.material3.Surface
import androidx.compose.material3.Tab
import androidx.compose.material3.TabRow
import androidx.compose.material3.Text
import androidx.compose.material3.TextButton
import androidx.compose.material3.rememberDrawerState
import androidx.compose.runtime.Composable
import androidx.compose.runtime.DisposableEffect
import androidx.compose.runtime.LaunchedEffect
import androidx.compose.runtime.SideEffect
import androidx.compose.runtime.collectAsState
import androidx.compose.runtime.derivedStateOf
import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableFloatStateOf
import androidx.compose.runtime.mutableIntStateOf
import androidx.compose.runtime.mutableLongStateOf
import androidx.compose.runtime.mutableStateListOf
import androidx.compose.runtime.mutableStateMapOf
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.runtime.rememberCoroutineScope
import androidx.compose.runtime.rememberUpdatedState
import androidx.compose.runtime.setValue
import androidx.compose.ui.Alignment
import androidx.compose.ui.BiasAlignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.draw.alpha
import androidx.compose.ui.draw.clip
import androidx.compose.ui.draw.rotate
import androidx.compose.ui.draw.scale
import androidx.compose.ui.draw.shadow
import androidx.compose.ui.focus.FocusRequester
import androidx.compose.ui.focus.focusRequester
import androidx.compose.ui.geometry.Offset
import androidx.compose.ui.geometry.Rect
import androidx.compose.ui.geometry.Size
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.graphics.RectangleShape
import androidx.compose.ui.graphics.asImageBitmap
import androidx.compose.ui.graphics.drawscope.Stroke
import androidx.compose.ui.graphics.graphicsLayer
import androidx.compose.ui.graphics.toArgb
import androidx.compose.ui.input.key.KeyEventType
import androidx.compose.ui.input.pointer.PointerInputChange
import androidx.compose.ui.input.pointer.pointerInput
import androidx.compose.ui.layout.ContentScale
import androidx.compose.ui.platform.LocalClipboardManager
import androidx.compose.ui.platform.LocalContext
import androidx.compose.ui.platform.LocalDensity
import androidx.compose.ui.platform.LocalFocusManager
import androidx.compose.ui.platform.LocalSoftwareKeyboardController
import androidx.compose.ui.platform.LocalUriHandler
import androidx.compose.ui.platform.LocalView
import androidx.compose.ui.platform.testTag
import androidx.compose.ui.res.painterResource
import androidx.compose.ui.semantics.Role
import androidx.compose.ui.text.AnnotatedString
import androidx.compose.ui.text.SpanStyle
import androidx.compose.ui.text.TextStyle
import androidx.compose.ui.text.buildAnnotatedString
import androidx.compose.ui.text.font.FontStyle
import androidx.compose.ui.text.font.FontWeight
import androidx.compose.ui.text.input.PasswordVisualTransformation
import androidx.compose.ui.text.input.VisualTransformation
import androidx.compose.ui.text.style.TextAlign
import androidx.compose.ui.text.style.TextDecoration
import androidx.compose.ui.text.style.TextOverflow
import androidx.compose.ui.unit.IntOffset
import androidx.compose.ui.unit.IntSize
import androidx.compose.ui.unit.dp
import androidx.compose.ui.unit.sp
import androidx.core.content.ContextCompat
import androidx.core.content.edit
import androidx.core.graphics.createBitmap
import androidx.core.view.WindowCompat
import androidx.core.view.WindowInsetsCompat
import androidx.core.view.WindowInsetsControllerCompat
import androidx.media3.common.util.UnstableApi
import androidx.paging.LoadState
import androidx.paging.compose.LazyPagingItems
import androidx.paging.compose.collectAsLazyPagingItems
import androidx.paging.compose.itemContentType
import androidx.paging.compose.itemKey
import com.aryan.reader.AiDefinitionPopup
import com.aryan.reader.AiDefinitionResult
import com.aryan.reader.BuildConfig
import com.aryan.reader.MainViewModel
import com.aryan.reader.R
import com.aryan.reader.SearchResult
import com.aryan.reader.SearchTopBar
import com.aryan.reader.SummarizationPopup
import com.aryan.reader.SummarizationResult
import com.aryan.reader.SyncUpdateInfo
import com.aryan.reader.epubreader.AutoScrollControls
import com.aryan.reader.fetchAiDefinition
import com.aryan.reader.paginatedreader.TtsChunk
import com.aryan.reader.pdf.data.AnnotationSettingsRepository
import com.aryan.reader.pdf.data.PdfAnnotation
import com.aryan.reader.pdf.data.PdfAnnotationRepository
import com.aryan.reader.pdf.data.PdfTextBox
import com.aryan.reader.pdf.data.PdfTextBoxRepository
import com.aryan.reader.pdf.data.PdfTextRepository
import com.aryan.reader.pdf.data.SmartSearchResult
import com.aryan.reader.pdf.data.TextStyleConfig
import com.aryan.reader.pdf.data.VirtualPage
import com.aryan.reader.rememberSearchState
import com.aryan.reader.summarizationUrl
import com.aryan.reader.tts.SpeakerSamplePlayer
import com.aryan.reader.tts.rememberTtsController
import com.aryan.reader.tts.splitTextIntoChunks
import io.legere.pdfiumandroid.PdfDocument
import io.legere.pdfiumandroid.PdfPasswordException
import io.legere.pdfiumandroid.suspend.PdfDocumentKt
import io.legere.pdfiumandroid.suspend.PdfPageKt
import io.legere.pdfiumandroid.suspend.PdfTextPageKt
import io.legere.pdfiumandroid.suspend.PdfiumCoreKt
import kotlinx.coroutines.CoroutineScope
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.Job
import kotlinx.coroutines.NonCancellable
import kotlinx.coroutines.delay
import kotlinx.coroutines.flow.conflate
import kotlinx.coroutines.isActive
import kotlinx.coroutines.launch
import kotlinx.coroutines.withContext
import kotlinx.coroutines.withTimeoutOrNull
import org.json.JSONArray
import org.json.JSONObject
import timber.log.Timber
import java.io.ByteArrayOutputStream
import java.io.File
import java.net.HttpURLConnection
import java.net.URL
import kotlin.math.min
import kotlin.math.roundToInt
import kotlin.random.Random
private const val VERTICAL_SCROLL_TAG = "PdfVerticalScroll"
private const val SETTINGS_PREFS_NAME = "epub_reader_settings"
private const val TTS_MODE_KEY = "tts_mode"
private const val DISPLAY_MODE_KEY = "pdf_display_mode"
private const val PDF_DARK_MODE_KEY = "pdf_dark_mode"
private const val OCR_LANGUAGE_KEY = "ocr_language_key"
private const val OCR_LANGUAGE_SELECTED_KEY = "ocr_language_selected_key"
private const val DOCK_LOCATION_KEY = "dock_location"
private const val DOCK_OFFSET_X_KEY = "dock_offset_x"
private const val DOCK_OFFSET_Y_KEY = "dock_offset_y"
private const val PDF_AUTO_SCROLL_SPEED_KEY = "pdf_auto_scroll_speed"
private const val PDF_AUTO_SCROLL_LOCKED_KEY = "pdf_auto_scroll_locked"
private const val PDF_AUTO_SCROLL_USE_SLIDER_KEY = "pdf_auto_scroll_use_slider"
private const val PDF_AUTO_SCROLL_MIN_SPEED_KEY = "pdf_auto_scroll_min_speed"
private const val PDF_AUTO_SCROLL_MAX_SPEED_KEY = "pdf_auto_scroll_max_speed"
private fun savePdfAutoScrollMinSpeed(context: Context, speed: Float) {
val prefs = context.getSharedPreferences(SETTINGS_PREFS_NAME, Context.MODE_PRIVATE)
prefs.edit { putFloat(PDF_AUTO_SCROLL_MIN_SPEED_KEY, speed) }
}
private fun loadPdfAutoScrollMinSpeed(context: Context): Float {
val prefs = context.getSharedPreferences(SETTINGS_PREFS_NAME, Context.MODE_PRIVATE)
return prefs.getFloat(PDF_AUTO_SCROLL_MIN_SPEED_KEY, 0.1f)
}
private fun savePdfAutoScrollMaxSpeed(context: Context, speed: Float) {
val prefs = context.getSharedPreferences(SETTINGS_PREFS_NAME, Context.MODE_PRIVATE)
prefs.edit { putFloat(PDF_AUTO_SCROLL_MAX_SPEED_KEY, speed) }
}
private fun loadPdfAutoScrollMaxSpeed(context: Context): Float {
val prefs = context.getSharedPreferences(SETTINGS_PREFS_NAME, Context.MODE_PRIVATE)
return prefs.getFloat(PDF_AUTO_SCROLL_MAX_SPEED_KEY, 10.0f)
}
private fun savePdfAutoScrollLocked(context: Context, isLocked: Boolean) {
val prefs = context.getSharedPreferences(SETTINGS_PREFS_NAME, Context.MODE_PRIVATE)
prefs.edit { putBoolean(PDF_AUTO_SCROLL_LOCKED_KEY, isLocked) }
}
private fun loadPdfAutoScrollLocked(context: Context): Boolean {
val prefs = context.getSharedPreferences(SETTINGS_PREFS_NAME, Context.MODE_PRIVATE)
return prefs.getBoolean(PDF_AUTO_SCROLL_LOCKED_KEY, false)
}
private fun savePdfAutoScrollUseSlider(context: Context, useSlider: Boolean) {
val prefs = context.getSharedPreferences(SETTINGS_PREFS_NAME, Context.MODE_PRIVATE)
prefs.edit { putBoolean(PDF_AUTO_SCROLL_USE_SLIDER_KEY, useSlider) }
}
private fun loadPdfAutoScrollUseSlider(context: Context): Boolean {
val prefs = context.getSharedPreferences(SETTINGS_PREFS_NAME, Context.MODE_PRIVATE)
return prefs.getBoolean(PDF_AUTO_SCROLL_USE_SLIDER_KEY, false)
}
private fun savePdfAutoScrollSpeed(context: Context, speed: Float) {
val prefs = context.getSharedPreferences(SETTINGS_PREFS_NAME, Context.MODE_PRIVATE)
prefs.edit { putFloat(PDF_AUTO_SCROLL_SPEED_KEY, speed) }
}
private fun loadPdfAutoScrollSpeed(context: Context): Float {
val prefs = context.getSharedPreferences(SETTINGS_PREFS_NAME, Context.MODE_PRIVATE)
return prefs.getFloat(PDF_AUTO_SCROLL_SPEED_KEY, 3.0f)
}
private fun generateShortId(): String {
return Random.nextInt(1000, 9999).toString()
}
private fun getSuggestedFilename(originalName: String?, isAnnotated: Boolean): String {
val base = originalName?.substringBeforeLast('.') ?: "Document"
val safeBase = base.replace("[^a-zA-Z0-9._-]".toRegex(), "_").take(50)
val suffix = if (isAnnotated) "_annotated" else ""
val shortId = generateShortId()
return "${safeBase}${suffix}_${shortId}.pdf"
}
private enum class SaveMode {
ORIGINAL, ANNOTATED
}
enum class SearchHighlightMode {
FOCUSED, ALL
}
private sealed interface HistoryAction {
data class Add(val pageIndex: Int, val annotation: PdfAnnotation) : HistoryAction
data class Remove(val items: Map>) : HistoryAction
}
private enum class DockLocation {
TOP, BOTTOM, FLOATING
}
private fun saveOcrLanguage(context: Context, language: OcrLanguage) {
val prefs = context.getSharedPreferences(SETTINGS_PREFS_NAME, Context.MODE_PRIVATE)
prefs.edit {
putString(OCR_LANGUAGE_KEY, language.name)
putBoolean(OCR_LANGUAGE_SELECTED_KEY, true)
}
}
private fun loadOcrLanguage(context: Context): OcrLanguage {
val prefs = context.getSharedPreferences(SETTINGS_PREFS_NAME, Context.MODE_PRIVATE)
val name = prefs.getString(OCR_LANGUAGE_KEY, OcrLanguage.LATIN.name)
return try {
OcrLanguage.valueOf(name ?: OcrLanguage.LATIN.name)
} catch (_: Exception) {
OcrLanguage.LATIN
}
}
private fun hasUserSelectedOcrLanguage(context: Context): Boolean {
val prefs = context.getSharedPreferences(SETTINGS_PREFS_NAME, Context.MODE_PRIVATE)
return prefs.getBoolean(OCR_LANGUAGE_SELECTED_KEY, false)
}
private fun saveDockState(context: Context, location: DockLocation, offset: Offset) {
val prefs = context.getSharedPreferences(SETTINGS_PREFS_NAME, Context.MODE_PRIVATE)
prefs.edit {
putString(DOCK_LOCATION_KEY, location.name)
putFloat(DOCK_OFFSET_X_KEY, offset.x)
putFloat(DOCK_OFFSET_Y_KEY, offset.y)
}
}
private fun loadDockState(context: Context): Pair {
val prefs = context.getSharedPreferences(SETTINGS_PREFS_NAME, Context.MODE_PRIVATE)
val locName = prefs.getString(DOCK_LOCATION_KEY, DockLocation.BOTTOM.name)
val location = try {
DockLocation.valueOf(locName ?: DockLocation.BOTTOM.name)
} catch (_: Exception) {
DockLocation.BOTTOM
}
val x = prefs.getFloat(DOCK_OFFSET_X_KEY, 0f)
val y = prefs.getFloat(DOCK_OFFSET_Y_KEY, 0f)
return location to Offset(x, y)
}
private enum class DisplayMode {
PAGINATION, VERTICAL_SCROLL
}
private fun saveDisplayMode(context: Context, mode: DisplayMode) {
val prefs = context.getSharedPreferences(SETTINGS_PREFS_NAME, Context.MODE_PRIVATE)
prefs.edit { putString(DISPLAY_MODE_KEY, mode.name) }
}
private fun loadDisplayMode(context: Context): DisplayMode {
val prefs = context.getSharedPreferences(SETTINGS_PREFS_NAME, Context.MODE_PRIVATE)
val modeName = prefs.getString(DISPLAY_MODE_KEY, DisplayMode.VERTICAL_SCROLL.name)
return try {
DisplayMode.valueOf(modeName ?: DisplayMode.VERTICAL_SCROLL.name)
} catch (_: IllegalArgumentException) {
DisplayMode.VERTICAL_SCROLL
}
}
internal data class PdfBookmark(val pageIndex: Int, val title: String, val totalPages: Int)
private fun loadPdfBookmarksFromJson(bookmarksJson: String?): Set {
if (bookmarksJson.isNullOrBlank()) return emptySet()
return try {
val jsonArray = JSONArray(bookmarksJson)
(0 until jsonArray.length()).mapNotNull { i ->
try {
val json = jsonArray.getJSONObject(i)
PdfBookmark(
pageIndex = json.getInt("pageIndex"),
title = json.getString("title"),
totalPages = json.getInt("totalPages")
)
} catch (e: Exception) {
Timber.e(e, "Failed to parse bookmark from JSON object")
null
}
}.toSet()
} catch (e: Exception) {
Timber.e(e, "Failed to parse bookmarks from JSON string: $bookmarksJson")
emptySet()
}
}
private fun savePdfDarkMode(context: Context, isDark: Boolean) {
val prefs = context.getSharedPreferences(SETTINGS_PREFS_NAME, Context.MODE_PRIVATE)
prefs.edit { putBoolean(PDF_DARK_MODE_KEY, isDark) }
}
private fun loadPdfDarkMode(context: Context): Boolean {
val prefs = context.getSharedPreferences(SETTINGS_PREFS_NAME, Context.MODE_PRIVATE)
return prefs.getBoolean(PDF_DARK_MODE_KEY, false)
}
@Suppress("unused")
private enum class TtsMode {
CLOUD, BASE
}
private data class TtsPageData(
val pageIndex: Int, val processedText: ProcessedText, val fromOcr: Boolean
)
private data class TocEntry(val title: String, val pageIndex: Int, val nestLevel: Int)
private fun flattenToc(bookmarks: List, level: Int = 0): List {
val entries = mutableListOf()
for (bookmark in bookmarks) {
entries.add(
TocEntry(
title = bookmark.title ?: "Untitled Chapter",
pageIndex = bookmark.pageIdx.toInt(),
nestLevel = level
)
)
if (bookmark.children.isNotEmpty()) {
entries.addAll(flattenToc(bookmark.children, level + 1))
}
}
return entries
}
@Suppress("unused")
private fun saveTtsMode(context: Context, mode: TtsMode) {
val prefs = context.getSharedPreferences(SETTINGS_PREFS_NAME, Context.MODE_PRIVATE)
prefs.edit { putString(TTS_MODE_KEY, mode.name) }
}
@Suppress("unused")
private fun loadTtsMode(): TtsMode {
// For this release, Cloud TTS is disabled. Force BASE mode.
return TtsMode.BASE
}
private suspend fun renderPageToBitmap(doc: PdfDocumentKt, pageIndex: Int): Bitmap? {
return withContext(Dispatchers.IO) {
var page: PdfPageKt? = null
try {
page = doc.openPage(pageIndex)
val bitmapWidth = 1080
val aspectRatio =
page.getPageWidthPoint().toFloat() / page.getPageHeightPoint().toFloat()
if (aspectRatio.isNaN() || aspectRatio <= 0) {
Timber.e("Invalid aspect ratio for page $pageIndex")
return@withContext null
}
val bitmapHeight = (bitmapWidth / aspectRatio).toInt()
if (bitmapHeight <= 0) {
Timber.e("Invalid calculated bitmap height for page $pageIndex")
return@withContext null
}
val bitmap = createBitmap(bitmapWidth, bitmapHeight)
page.renderPageBitmap(
bitmap = bitmap,
startX = 0,
startY = 0,
drawSizeX = bitmapWidth,
drawSizeY = bitmapHeight,
renderAnnot = true
)
bitmap
} catch (e: Exception) {
Timber.e(e, "Error rendering page $pageIndex to bitmap for summarization")
null
} finally {
try {
page?.close()
} catch (e: Exception) {
Timber.w(e, "Error closing page in renderPageToBitmap")
}
}
}
}
private fun getFastFileId(context: Context, uri: Uri): String {
var result = uri.toString()
try {
context.contentResolver.query(uri, null, null, null, null)?.use { cursor ->
if (cursor.moveToFirst()) {
val sizeIndex = cursor.getColumnIndex(OpenableColumns.SIZE)
val nameIndex = cursor.getColumnIndex(OpenableColumns.DISPLAY_NAME)
val size = if (sizeIndex != -1) cursor.getLong(sizeIndex) else 0L
val name = if (nameIndex != -1) cursor.getString(nameIndex) else "unknown"
result = "${name}_${size}"
}
}
} catch (e: Exception) {
Timber.e(e, "Failed to generate fast file ID")
}
return result
}
@Suppress("KotlinConstantConditions")
@SuppressLint("UnusedBoxWithConstraintsScope", "ObsoleteSdkInt")
@ExperimentalMaterial3Api
@RequiresApi(Build.VERSION_CODES.VANILLA_ICE_CREAM)
@OptIn(UnstableApi::class, ExperimentalMaterial3Api::class)
@Composable
fun PdfViewerScreen(
pdfUri: Uri,
initialPage: Int?,
initialBookmarksJson: String?,
isProUser: Boolean,
onNavigateBack: () -> Unit,
onSavePosition: (page: Int, totalPages: Int) -> Unit,
onBookmarksChanged: (bookmarksJson: String) -> Unit,
onNavigateToPro: () -> Unit,
viewModel: MainViewModel
) {
SideEffect { Timber.tag("PdfDrawPerf").v("ROOT: PdfViewerScreen Recomposing") }
val context = LocalContext.current
LaunchedEffect(Unit) {
PdfFontCache.init(context.assets)
}
val activity = context as? Activity
val coroutineScope = rememberCoroutineScope()
val focusRequester = remember { FocusRequester() }
val keyboardController = LocalSoftwareKeyboardController.current
val focusManager = LocalFocusManager.current
val drawerState = rememberDrawerState(initialValue = DrawerValue.Closed)
var displayMode by remember { mutableStateOf(loadDisplayMode(context)) }
var isPdfDarkMode by remember { mutableStateOf(loadPdfDarkMode(context)) }
var pageAspectRatios by remember { mutableStateOf>(emptyList()) }
var showBars by remember { mutableStateOf(true) }
var isFullScreen by remember { mutableStateOf(false) }
var documentPassword by remember { mutableStateOf(null) }
var isScrollLocked by remember { mutableStateOf(false) }
var showPasswordDialog by remember { mutableStateOf(false) }
var isPasswordError by remember { mutableStateOf(false) }
LocalView.current
var ocrLanguage by remember { mutableStateOf(loadOcrLanguage(context)) }
var hasSelectedOcrLanguage by remember { mutableStateOf(hasUserSelectedOcrLanguage(context)) }
var showOcrLanguageDialog by remember { mutableStateOf(false) }
var showReindexDialog by remember { mutableStateOf(null) }
var pendingActionAfterOcrSelection by remember { mutableStateOf<(() -> Unit)?>(null) }
val executeWithOcrCheck = remember(hasSelectedOcrLanguage) {
{ action: () -> Unit ->
if (hasSelectedOcrLanguage) {
action()
} else {
pendingActionAfterOcrSelection = action
showOcrLanguageDialog = true
}
}
}
var searchHighlightMode by remember { mutableStateOf(SearchHighlightMode.ALL) }
var isBackgroundIndexing by remember { mutableStateOf(false) }
var backgroundIndexingProgress by remember { mutableFloatStateOf(0f) }
val uiState by viewModel.uiState.collectAsState()
val originalFileName by remember(uiState.recentFiles, pdfUri) {
derivedStateOf {
uiState.recentFiles.find { it.uriString == pdfUri.toString() }?.displayName
?: pdfUri.lastPathSegment ?: "Document.pdf"
}
}
var isDockDragging by remember { mutableStateOf(false) }
var isAutoScrollModeActive by remember { mutableStateOf(false) }
var isAutoScrollPlaying by remember { mutableStateOf(false) }
var isAutoScrollTempPaused by remember { mutableStateOf(false) }
val autoScrollResumeJob = remember { mutableStateOf(null) }
var autoScrollSpeed by remember { mutableFloatStateOf(loadPdfAutoScrollSpeed(context)) }
var autoScrollMinSpeed by remember { mutableFloatStateOf(loadPdfAutoScrollMinSpeed(context)) }
var autoScrollMaxSpeed by remember { mutableFloatStateOf(loadPdfAutoScrollMaxSpeed(context)) }
var isAutoScrollCollapsed by remember { mutableStateOf(false) }
var isAutoScrollLocked by remember { mutableStateOf(loadPdfAutoScrollLocked(context)) }
var autoScrollUseSlider by remember { mutableStateOf(loadPdfAutoScrollUseSlider(context)) }
fun triggerAutoScrollTempPause(durationMs: Long) {
if (!isAutoScrollModeActive || !isAutoScrollPlaying) return
autoScrollResumeJob.value?.cancel()
isAutoScrollTempPaused = true
autoScrollResumeJob.value = coroutineScope.launch {
delay(durationMs)
if (isActive && isAutoScrollModeActive && isAutoScrollPlaying) {
isAutoScrollTempPaused = false
}
}
}
val onAutoScrollInteraction = remember {
{
if (isAutoScrollPlaying) {
triggerAutoScrollTempPause(1000L)
}
}
}
var paginationDraggingBoxId by remember { mutableStateOf(null) }
val customFonts by viewModel.customFonts.collectAsState()
val snackbarHostState = remember { SnackbarHostState() }
val onOcrStateChange: (Boolean) -> Unit = {}
var showZoomIndicator by remember { mutableStateOf(false) }
var bookmarks by remember(pdfUri) { mutableStateOf(loadPdfBookmarksFromJson(initialBookmarksJson)) }
var showPenPlayground by remember { mutableStateOf(false) }
var isEditMode by remember { mutableStateOf(false) }
var isDockMinimized by remember { mutableStateOf(false) }
val isDrawingActive by remember(isEditMode, isDockMinimized) {
derivedStateOf { isEditMode && !isDockMinimized }
}
val (initialDockLocation, initialDockOffset) = remember(context) { loadDockState(context) }
var dockLocation by remember { mutableStateOf(initialDockLocation) }
var dockOffset by remember { mutableStateOf(initialDockOffset) }
var snapPreviewLocation by remember { mutableStateOf(null) }
var paginationDraggingOffset by remember { mutableStateOf(Offset.Zero) }
var paginationDraggingSize by remember { mutableStateOf(Size.Zero) }
var paginationDragPageHeight by remember { mutableFloatStateOf(0f) }
var paginationOriginalRelSize by remember { mutableStateOf(Size.Zero) }
LaunchedEffect(Unit) {
if (dockLocation == DockLocation.FLOATING && dockOffset == Offset.Zero) {
dockLocation = DockLocation.BOTTOM
}
}
val view = LocalView.current
val window = (view.context as? Activity)?.window
LaunchedEffect(isFullScreen) {
if (window != null) {
val insetsController = WindowCompat.getInsetsController(window, view)
if (isFullScreen) {
showBars = false
insetsController.hide(WindowInsetsCompat.Type.systemBars())
insetsController.systemBarsBehavior =
WindowInsetsControllerCompat.BEHAVIOR_SHOW_TRANSIENT_BARS_BY_SWIPE
} else {
showBars = true
insetsController.show(WindowInsetsCompat.Type.systemBars())
}
}
}
val dockHeight = 64.dp
val dockHeightPx = with(LocalDensity.current) { dockHeight.toPx() }
val verticalHeaderHeight by remember(
dockLocation,
snapPreviewLocation,
isEditMode,
isDockDragging
) {
derivedStateOf {
if (!isEditMode) {
0.dp
} else {
val isStickyTop = dockLocation == DockLocation.TOP && !isDockDragging
val isPreviewingTop = snapPreviewLocation == DockLocation.TOP
if (isStickyTop || isPreviewingTop) dockHeight else 0.dp
}
}
}
val verticalFooterHeight by remember(
dockLocation,
snapPreviewLocation,
isEditMode,
isDockDragging
) {
derivedStateOf {
if (!isEditMode) {
0.dp
} else {
val isStickyBottom = dockLocation == DockLocation.BOTTOM && !isDockDragging
val isPreviewingBottom = snapPreviewLocation == DockLocation.BOTTOM
if (isStickyBottom || isPreviewingBottom) dockHeight else 0.dp
}
}
}
LaunchedEffect(ocrLanguage) { OcrHelper.init(ocrLanguage) }
LaunchedEffect(displayMode) { saveDisplayMode(context, displayMode) }
LaunchedEffect(isPdfDarkMode) { savePdfDarkMode(context, isPdfDarkMode) }
val annotationSettingsRepo = remember(context) { AnnotationSettingsRepository(context) }
val toolSettings by annotationSettingsRepo.settings.collectAsState()
var showToolSettings by remember { mutableStateOf(false) }
val selectedTool = toolSettings.getActiveTool()
val lastPenTool = toolSettings.getLastPenTool()
val dockPenColor = toolSettings.getToolColor(lastPenTool)
val dockHighlighterColor = toolSettings.getToolColor(InkType.HIGHLIGHTER)
val activeToolColor = toolSettings.getToolColor(selectedTool)
val activeToolThickness = toolSettings.getToolThickness(selectedTool)
val fountainPenColor = toolSettings.getToolColor(InkType.FOUNTAIN_PEN)
val markerColor = toolSettings.getToolColor(InkType.PEN)
val pencilColor = toolSettings.getToolColor(InkType.PENCIL)
val highlighterColor = toolSettings.getToolColor(InkType.HIGHLIGHTER)
val highlighterRoundColor = toolSettings.getToolColor(InkType.HIGHLIGHTER_ROUND)
val isCurrentToolHighlighter =
selectedTool == InkType.HIGHLIGHTER || selectedTool == InkType.HIGHLIGHTER_ROUND
val penPalette = remember(toolSettings.penPaletteArgb) { toolSettings.getPenPalette() }
val highlighterPalette =
remember(toolSettings.highlighterPaletteArgb) { toolSettings.getHighlighterPalette() }
val currentStrokeColor by remember(activeToolColor) { derivedStateOf { activeToolColor } }
val currentStrokeWidth by remember(activeToolThickness) { derivedStateOf { activeToolThickness } }
val pdfTextRepository = remember(context) { PdfTextRepository(context) }
val annotationRepository = remember(context) { PdfAnnotationRepository(context) }
val textBoxRepository = remember(context) { PdfTextBoxRepository(context) }
var currentBookId by remember { mutableStateOf(null) }
var allAnnotations by remember { mutableStateOf>>(emptyMap()) }
val undoStack = remember { mutableStateListOf() }
val redoStack = remember { mutableStateListOf() }
val erasedAnnotationsFromStroke = remember {
mutableStateMapOf>()
}
var areAnnotationsLoaded by remember { mutableStateOf(false) }
LaunchedEffect(allAnnotations) {
if (areAnnotationsLoaded && currentBookId != null) {
delay(1000)
withContext(Dispatchers.IO) {
Timber.d("Auto-saving annotations locally for book $currentBookId")
annotationRepository.saveAnnotations(currentBookId!!, allAnnotations)
}
}
}
val drawingState = remember { PdfDrawingState() }
val allAnnotationsProvider = remember { { allAnnotations } }
LaunchedEffect(Unit) {
Timber.d("PdfViewerScreen init: initialBookmarksJson is '$initialBookmarksJson'")
Timber.d("PdfViewerScreen init: Loaded ${bookmarks.size} bookmarks initially.")
}
LaunchedEffect(bookmarks) {
val objectList = bookmarks.map { bookmark ->
JSONObject().apply {
put("pageIndex", bookmark.pageIndex)
put("title", bookmark.title)
put("totalPages", bookmark.totalPages)
}
}
val bookmarksJson = JSONArray(objectList).toString()
Timber.d("Bookmarks changed. Firing onBookmarksChanged with JSON: $bookmarksJson")
onBookmarksChanged(bookmarksJson)
}
var flatTableOfContents by remember { mutableStateOf>(emptyList()) }
var showDictionaryUpsellDialog by remember { mutableStateOf(false) }
var showSummarizationUpsellDialog by remember { mutableStateOf(false) }
var showAiDefinitionPopup by remember { mutableStateOf(false) }
var selectedTextForAi by remember { mutableStateOf(null) }
var aiDefinitionResult by remember { mutableStateOf(null) }
var isAiDefinitionLoading by remember { mutableStateOf(false) }
var isAutoPagingForTts by remember { mutableStateOf(false) }
var showAllTextHighlights by remember { mutableStateOf(false) }
var isHighlightingLoading by remember { mutableStateOf(false) }
var ttsPageData by remember { mutableStateOf(null) }
var ttsHighlightData by remember { mutableStateOf(null) }
var errorMessage by remember { mutableStateOf(null) }
var isLoadingDocument by remember { mutableStateOf(true) }
var pdfDocument by remember { mutableStateOf(null) }
var pfdState by remember { mutableStateOf(null) }
var totalPages by remember { mutableIntStateOf(0) }
var currentPageScale by remember { mutableFloatStateOf(1f) }
var initialScrollDone by remember { mutableStateOf(false) }
var isDocumentReady by remember { mutableStateOf(false) }
var selectionClearTrigger by remember { mutableLongStateOf(0L) }
var virtualPages by remember { mutableStateOf>(emptyList()) }
val displayPageRatios by remember(pageAspectRatios, virtualPages) {
derivedStateOf {
if (virtualPages.isEmpty()) {
pageAspectRatios
} else {
virtualPages.map { vp ->
when (vp) {
is VirtualPage.PdfPage -> pageAspectRatios.getOrElse(vp.pdfIndex) { 1f }
is VirtualPage.BlankPage -> {
if (vp.height > 0) vp.width.toFloat() / vp.height.toFloat() else 1f
}
}
}
}
}
}
val richTextRepository = remember(context) { PdfRichTextRepository(context) }
val richTextController = remember(currentBookId) {
if (currentBookId != null) RichTextController(
richTextRepository,
coroutineScope,
currentBookId!!
)
else null
}
LaunchedEffect(richTextController, toolSettings.textStyle) {
richTextController?.let { controller ->
val config = toolSettings.textStyle
val style = SpanStyle(
color = Color(config.colorArgb),
background = Color(config.backgroundColorArgb),
fontSize = config.fontSize.sp,
fontWeight = if (config.isBold) FontWeight.Bold else FontWeight.Normal,
fontStyle = if (config.isItalic) FontStyle.Italic else FontStyle.Normal,
fontFamily = PdfFontCache.getFontFamily(config.fontPath),
textDecoration = run {
val decorations = mutableListOf()
if (config.isUnderline) decorations.add(TextDecoration.Underline)
if (config.isStrikeThrough) decorations.add(TextDecoration.LineThrough)
if (decorations.isEmpty()) TextDecoration.None
else TextDecoration.combine(decorations)
})
if (controller.currentStyle != style || controller.currentFontPath != config.fontPath) {
controller.updateCurrentStyle(style, config.fontPath, config.fontName)
}
}
}
val pdfiumCore = remember(context) { PdfiumCoreKt(Dispatchers.Default) }
val verticalReaderState = rememberVerticalPdfReaderState()
val totalDisplayPages by remember(virtualPages, totalPages) {
derivedStateOf { if (virtualPages.isNotEmpty()) virtualPages.size else totalPages }
}
val pagerState = rememberPagerState(initialPage = 0, pageCount = { totalDisplayPages })
LaunchedEffect(currentBookId) {
if (currentBookId != null) richTextRepository.load(currentBookId!!)
}
LaunchedEffect(richTextController, keyboardController) {
richTextController?.setKeyboardController(keyboardController)
}
LaunchedEffect(richTextController?.cursorPageIndex, isEditMode) {
val controller = richTextController ?: return@LaunchedEffect
val targetPage = controller.cursorPageIndex
if (isEditMode && targetPage >= 0 && targetPage < totalDisplayPages) {
if (displayMode == DisplayMode.PAGINATION) {
if (pagerState.currentPage != targetPage) {
Timber.tag("CursorNav").d("Cursor moved to Page $targetPage. Auto-paging.")
pagerState.animateScrollToPage(targetPage)
}
}
}
}
val currentPage by remember {
derivedStateOf {
when (displayMode) {
DisplayMode.PAGINATION -> pagerState.currentPage
DisplayMode.VERTICAL_SCROLL -> verticalReaderState.currentPage
}
}
}
Timber.d("Derived currentPage recomposed. New value: $currentPage (Mode: $displayMode)")
val textBoxes = remember { mutableStateListOf() }
var selectedTextBoxId by remember { mutableStateOf(null) }
val onInsertPage: () -> Unit = {
coroutineScope.launch {
val targetIndex = currentPage + 1
Timber.tag("RichTextMigration").i("INSERT: User requested blank page at index $targetIndex")
val (refWidth, refHeight) = withContext(Dispatchers.IO) {
if (virtualPages.isNotEmpty()) {
val refIndex = (currentPage).coerceIn(0, virtualPages.size - 1)
when (val vp = virtualPages[refIndex]) {
is VirtualPage.PdfPage -> {
var w = 595
var h = 842
try {
pdfDocument?.openPage(vp.pdfIndex)?.use { page ->
val preRotationWidth = page.getPageWidthPoint()
val preRotationHeight = page.getPageHeightPoint()
val rotation = page.getPageRotation()
if (rotation == 90 || rotation == 270) {
w = preRotationHeight
h = preRotationWidth
} else {
w = preRotationWidth
h = preRotationHeight
}
}
} catch (e: Exception) {
Timber.e(e, "Could not get page dimensions for page ${vp.pdfIndex}. Using defaults.")
}
Pair(w, h)
}
is VirtualPage.BlankPage -> Pair(vp.width, vp.height)
}
} else {
Pair(595, 842)
}
}
if (currentBookId != null) {
val shiftedBoxes = textBoxes.map { box ->
if (box.pageIndex >= targetIndex) {
box.copy(pageIndex = box.pageIndex + 1)
} else {
box
}
}
if (shiftedBoxes != textBoxes) {
textBoxes.clear()
textBoxes.addAll(shiftedBoxes)
}
val tempNewPage = VirtualPage.BlankPage(generateShortId(), refWidth, refHeight, wasManuallyAdded = true)
val optimisticPages = virtualPages.toMutableList()
optimisticPages.add(targetIndex, tempNewPage)
virtualPages = optimisticPages
if (displayMode == DisplayMode.PAGINATION) {
pagerState.animateScrollToPage(targetIndex)
} else {
verticalReaderState.scrollToPage(targetIndex)
}
Timber.tag("RichTextMigration").d("INSERT: Triggering RichTextController.insertPageBreakAt($targetIndex, count=2)")
richTextController?.insertPageBreakAt(targetIndex, count = 2)
val objectList = bookmarks.map { bookmark ->
JSONObject().apply {
put("pageIndex", bookmark.pageIndex)
put("title", bookmark.title)
put("totalPages", bookmark.totalPages)
}
}
val currentJson = JSONArray(objectList).toString()
val result = viewModel.addPage(
bookId = currentBookId!!,
currentLayout = virtualPages - tempNewPage,
insertIndex = targetIndex,
currentAnnotations = allAnnotations,
currentBookmarksJson = currentJson,
referenceWidth = refWidth,
referenceHeight = refHeight,
wasManuallyAdded = true
)
Timber.tag("RichTextMigration").i("INSERT: Layout update complete. New virtualPages size: ${result.layout.size}")
virtualPages = result.layout
allAnnotations = result.annotations
bookmarks = loadPdfBookmarksFromJson(result.bookmarksJson)
onBookmarksChanged(result.bookmarksJson)
snackbarHostState.showSnackbar("Page added at ${targetIndex + 1}")
}
}
}
val onDeletePage: () -> Unit = {
coroutineScope.launch {
if (currentBookId != null && currentPage in virtualPages.indices) {
Timber.tag("RichTextMigration").i("DELETE: User requested deletion of page at index $currentPage")
// Update text boxes: remove those on current page, shift those after
val boxesToKeep = textBoxes.filter { it.pageIndex != currentPage }
val shiftedBoxes = boxesToKeep.map { box ->
if (box.pageIndex > currentPage) {
box.copy(pageIndex = box.pageIndex - 1)
} else {
box
}
}
textBoxes.clear()
textBoxes.addAll(shiftedBoxes)
val objectList = bookmarks.map { bookmark ->
JSONObject().apply {
put("pageIndex", bookmark.pageIndex)
put("title", bookmark.title)
put("totalPages", bookmark.totalPages)
}
}
val currentJson = JSONArray(objectList).toString()
val cleanedAnnotations = allAnnotations.filterKeys { it != currentPage }
allAnnotations = cleanedAnnotations
Timber.tag("RichTextMigration").d("DELETE: Wiping text and structural breaks for page $currentPage")
richTextController?.deleteTextOnPage(currentPage)
val result = viewModel.removePage(
currentBookId!!, virtualPages, currentPage, cleanedAnnotations, currentJson
)
Timber.tag("RichTextMigration").i("DELETE: Layout update complete. New virtualPages size: ${result.layout.size}")
virtualPages = result.layout
allAnnotations = result.annotations
bookmarks = loadPdfBookmarksFromJson(result.bookmarksJson)
onBookmarksChanged(result.bookmarksJson)
snackbarHostState.showSnackbar("Page deleted")
val newMax = (virtualPages.size - 1).coerceAtLeast(0)
if (currentPage > newMax) {
if (displayMode == DisplayMode.PAGINATION) {
pagerState.scrollToPage(newMax)
} else {
verticalReaderState.scrollToPage(newMax)
}
}
}
}
}
val onInsertTextBox = {
val currentP = if (displayMode == DisplayMode.PAGINATION) pagerState.currentPage else verticalReaderState.currentPage
Timber.tag("PdfTextBoxDebug").d("Viewer: onInsertTextBox triggered. Target Page: $currentP, DisplayMode: $displayMode")
val defaultWidth = 0.4f
val defaultHeight = 0.1f
val startX = 0.3f
val startY = 0.45f
val newStyle = toolSettings.textStyle
val fontSizeNorm = 0.02f
val newBox = PdfTextBox(
id = generateShortId(),
pageIndex = currentP,
relativeBounds = Rect(startX, startY, startX + defaultWidth, startY + defaultHeight),
text = "",
color = Color(newStyle.colorArgb),
backgroundColor = Color(newStyle.backgroundColorArgb),
fontSize = fontSizeNorm,
isBold = newStyle.isBold,
isItalic = newStyle.isItalic,
isUnderline = newStyle.isUnderline,
isStrikeThrough = newStyle.isStrikeThrough
)
textBoxes.add(newBox)
Timber.tag("PdfTextBoxDebug").i("Viewer: Added TextBox [ID: ${newBox.id}] to list. Total boxes now: ${textBoxes.size}")
selectedTextBoxId = newBox.id
richTextController?.clearSelection()
showBars = false
}
val onSingleTapStable = remember {
{
if (selectedTextBoxId != null) {
val box = textBoxes.find { it.id == selectedTextBoxId }
if (box != null && box.text.trim().isEmpty()) {
textBoxes.remove(box)
Timber.tag("PdfTextBoxDebug").i("Removed empty text box: ${box.id}")
}
selectedTextBoxId = null
} else {
if (!isFullScreen) {
showBars = !showBars
Timber.d("Vertical Reader Clicked. showBars now: $showBars")
}
}
}
}
val highestRequiredTextPageIndex by remember(richTextController?.pageLayouts) {
derivedStateOf {
val maxIdx = richTextController?.pageLayouts?.maxOfOrNull { it.pageIndex } ?: -1
Timber.tag("CursorDebug").v("Calc highestRequiredTextPageIndex: $maxIdx")
maxIdx
}
}
val hasTextOnPage = remember(richTextController?.pageLayouts) {
{ pageIndex: Int ->
richTextController?.pageLayouts?.any {
it.pageIndex == pageIndex && it.visibleText.isNotBlank()
} == true
}
}
LaunchedEffect(highestRequiredTextPageIndex, virtualPages.size, allAnnotations) {
if (richTextController == null || !isDocumentReady) return@LaunchedEffect
delay(500)
@Suppress("UnusedVariable", "Unused") val lastPageIndex = virtualPages.size - 1
val requiredPages = highestRequiredTextPageIndex + 1
// Expansion Logic
if (requiredPages > virtualPages.size) {
Timber.tag("RichTextFlow").i("Text overflow detected. Required pages: $requiredPages, current: ${virtualPages.size}. Adding page.")
val lastPage = virtualPages.lastOrNull()
val (refWidth, refHeight) = when(lastPage) {
is VirtualPage.PdfPage -> {
var w = 595; var h = 842
pdfDocument?.openPage(lastPage.pdfIndex)?.use { page ->
w = page.getPageWidthPoint()
h = page.getPageHeightPoint()
}
Pair(w, h)
}
is VirtualPage.BlankPage -> Pair(lastPage.width, lastPage.height)
null -> Pair(595, 842)
}
val objectList = bookmarks.map { bookmark ->
JSONObject().apply {
put("pageIndex", bookmark.pageIndex)
put("title", bookmark.title)
put("totalPages", bookmark.totalPages)
}
}
val currentJson = JSONArray(objectList).toString()
val result = viewModel.addPage(
bookId = currentBookId!!,
currentLayout = virtualPages,
insertIndex = virtualPages.size,
currentAnnotations = allAnnotations,
currentBookmarksJson = currentJson,
referenceWidth = refWidth,
referenceHeight = refHeight,
wasManuallyAdded = false // Auto-added page
)
virtualPages = result.layout
allAnnotations = result.annotations
bookmarks = loadPdfBookmarksFromJson(result.bookmarksJson)
onBookmarksChanged(result.bookmarksJson)
}
// Contraction Logic
else {
var lastPage = virtualPages.lastOrNull()
var currentLastIndex = virtualPages.size - 1
var pageRemoved = false
while (
lastPage is VirtualPage.BlankPage &&
!lastPage.wasManuallyAdded &&
currentLastIndex > highestRequiredTextPageIndex &&
!hasTextOnPage(currentLastIndex) &&
allAnnotations[currentLastIndex].isNullOrEmpty() &&
textBoxes.none { it.pageIndex == currentLastIndex } // Check for text boxes
) {
Timber.tag("RichTextFlow").i("Auto-pruning empty page at index $currentLastIndex.")
pageRemoved = true
val objectList = bookmarks.map {
JSONObject().apply {
put("pageIndex", it.pageIndex)
put("title", it.title)
put("totalPages", it.totalPages)
}
}
val currentJson = JSONArray(objectList).toString()
val result = viewModel.removePage(
currentBookId!!, virtualPages, currentLastIndex, allAnnotations, currentJson
)
virtualPages = result.layout
allAnnotations = result.annotations
bookmarks = loadPdfBookmarksFromJson(result.bookmarksJson)
onBookmarksChanged(result.bookmarksJson)
currentLastIndex--
lastPage = virtualPages.getOrNull(currentLastIndex)
}
if (pageRemoved) {
snackbarHostState.showSnackbar("Extra page removed")
}
}
}
LaunchedEffect(isDocumentReady) {
if (isDocumentReady && !initialScrollDone) {
val pageCount = pagerState.pageCount
if (pageCount > 0) {
val targetPage = initialPage?.coerceIn(0, pageCount - 1) ?: 0
Timber.d("Initial Setup: Document is ready. Target page: $targetPage.")
coroutineScope.launch {
if (pagerState.currentPage != targetPage) {
when (displayMode) {
DisplayMode.PAGINATION -> {
Timber.d("Initial Setup: Animating scroll to page $targetPage.")
pagerState.scrollToPage(targetPage)
}
DisplayMode.VERTICAL_SCROLL -> {
Timber.d("Initial Setup: Snapping scroll to item $targetPage.")
verticalReaderState.snapToPage(targetPage)
pagerState.scrollToPage(targetPage)
}
}
}
initialScrollDone = true
Timber.d("Initial Setup: Scroll complete. Page saving is now enabled.")
}
} else {
Timber.w(
"Initial Setup: Document is ready, but pager pageCount is still 0. This may happen on rapid open/close. Scroll will be skipped."
)
}
}
}
LaunchedEffect(isDocumentReady, currentBookId) {
if (isDocumentReady && currentBookId != null && totalPages > 0) {
val layout = viewModel.loadPageLayout(currentBookId!!, totalPages)
virtualPages = layout
if (initialPage != null && initialPage >= totalPages && initialPage < layout.size) {
Timber.d("Restoring position to added page: $initialPage")
if (displayMode == DisplayMode.PAGINATION) {
pagerState.scrollToPage(initialPage)
} else {
verticalReaderState.scrollToPage(initialPage)
}
}
}
}
LaunchedEffect(pagerState.currentPage) {
Timber.d("Pager state changed: pagerState.currentPage is now ${pagerState.currentPage}")
}
LaunchedEffect(currentPage, totalPages) {
if (totalPages > 0 && initialScrollDone) {
delay(500L)
Timber.d(
"Debounced save: Calling onSavePosition(page=$currentPage, totalPages=$totalPages)"
)
onSavePosition(currentPage, totalPages)
}
}
LaunchedEffect(displayMode) {
coroutineScope.launch {
if (displayMode == DisplayMode.VERTICAL_SCROLL) {
val pageToScroll = pagerState.currentPage
verticalReaderState.scrollToPage(pageToScroll)
} else {
val pageToScroll = verticalReaderState.currentPage
pagerState.scrollToPage(pageToScroll)
}
}
}
val isBookmarked by remember(
bookmarks, pagerState.currentPage, verticalReaderState.currentPage, displayMode
) {
derivedStateOf {
val currentPage = if (displayMode == DisplayMode.PAGINATION) {
pagerState.currentPage
} else {
verticalReaderState.currentPage
}
bookmarks.any { it.pageIndex == currentPage }
}
}
LaunchedEffect(currentPageScale) {
if (currentPageScale != 1f) {
showZoomIndicator = true
delay(1500)
showZoomIndicator = false
} else {
showZoomIndicator = false
}
}
val onToggleBookmark: (Int) -> Unit = { pageIndex ->
coroutineScope.launch {
Timber.d("onToggleBookmark triggered for page index: $pageIndex")
if (bookmarks.any { it.pageIndex == pageIndex }) {
Timber.d("Bookmark exists. Removing...")
bookmarks = bookmarks.filterNot { it.pageIndex == pageIndex }.toSet()
} else {
Timber.d("Creating new bookmark. Attempting text extraction...")
var extractedText = ""
if (pdfDocument != null) {
try {
withContext(Dispatchers.IO) {
pdfDocument!!.openPage(pageIndex).use { page ->
page.openTextPage().use { textPage ->
val count = textPage.textPageCountChars()
if (count > 0) {
// Attempt to get text
val rawText = textPage.textPageGetText(0, min(count, 200))
extractedText = rawText ?: ""
} else {
Timber.w(
"Pdfium: Character count is 0. Page might be image-only."
)
}
}
}
}
} catch (e: Exception) {
Timber.e(e, "Bookmark: Direct text extraction failed")
}
} else {
Timber.e("pdfDocument is null. Cannot extract text.")
}
if (extractedText.isBlank() && currentBookId != null && pdfDocument != null) {
Timber.d("Extracted text is blank. Attempting repository/OCR fallback...")
try {
extractedText = pdfTextRepository.getOrExtractText(
currentBookId!!, pdfDocument!!, pageIndex
)
Timber.d("Repository: Extracted text length: ${extractedText.length}")
} catch (e: Exception) {
Timber.w(e, "Bookmark: Repository extraction failed")
}
}
val cleanText = extractedText.replace("\\s+".toRegex(), " ").trim()
val words = cleanText.split(" ").filter { it.isNotBlank() }
val contentTitle = if (words.isNotEmpty()) {
words.take(6).joinToString(" ") + "..."
} else {
Timber.d("No words found. Falling back to 'Page X' title.")
"Page ${pageIndex + 1}"
}
val chapterTitle =
flatTableOfContents.lastOrNull { it.pageIndex <= pageIndex }?.title
val finalTitle = if (!chapterTitle.isNullOrBlank()) {
"$contentTitle\n$chapterTitle"
} else {
contentTitle
}
Timber.d("Final Bookmark Title: '$finalTitle'")
bookmarks = bookmarks + PdfBookmark(
pageIndex = pageIndex, title = finalTitle, totalPages = totalPages
)
}
}
}
val onBookmarkClick: () -> Unit = {
val currentPage = if (displayMode == DisplayMode.PAGINATION) {
pagerState.currentPage
} else {
verticalReaderState.currentPage
}
onToggleBookmark(currentPage)
}
LaunchedEffect(pdfUri) { debugPdfLinks(context, pdfUri, pdfiumCore, this) }
LaunchedEffect(currentBookId) {
if (currentBookId != null) {
val loaded = annotationRepository.loadAnnotations(currentBookId!!)
allAnnotations = loaded
areAnnotationsLoaded = true
val loadedBoxes = textBoxRepository.loadTextBoxes(currentBookId!!)
textBoxes.clear()
textBoxes.addAll(loadedBoxes)
}
}
LaunchedEffect(textBoxes.toList()) {
if (currentBookId != null) {
delay(1000)
withContext(Dispatchers.IO) {
Timber.d("Auto-saving text boxes locally for book $currentBookId")
textBoxRepository.saveTextBoxes(currentBookId!!, textBoxes.toList())
}
}
}
var pendingSaveMode by remember { mutableStateOf(null) }
val saveLauncher = rememberLauncherForActivityResult(
contract = ActivityResultContracts.CreateDocument("application/pdf")
) { uri ->
if (uri != null && pendingSaveMode != null) {
when (pendingSaveMode) {
SaveMode.ANNOTATED -> {
if (currentBookId != null) {
coroutineScope.launch {
val currentRichTextLayouts = richTextController?.pageLayouts
Timber.tag("PdfExportDebug").i("*** EXPORT TRIGGERED FROM VIEWER ***")
if (currentRichTextLayouts != null) {
Timber.tag("PdfExportDebug").i(
"Passing ${currentRichTextLayouts.size} rich text pages."
)
}
viewModel.savePdfWithAnnotations(
sourceUri = pdfUri,
destUri = uri,
annotations = allAnnotations,
richTextPageLayouts = currentRichTextLayouts,
textBoxes = textBoxes.toList(),
bookId = currentBookId!!
)
}
} else {
Timber.tag("PdfExportDebug").e("Cannot export: currentBookId is null")
}
}
SaveMode.ORIGINAL -> {
viewModel.saveOriginalPdf(pdfUri, uri)
}
else -> {}
}
}
pendingSaveMode = null
}
var showShareDialog by remember { mutableStateOf(false) }
var showSaveDialog by remember { mutableStateOf(false) }
var isShareLoading by remember { mutableStateOf(false) }
var ocrUsedForCurrentPageTts by remember { mutableStateOf(false) }
var showSummarizationPopup by remember { mutableStateOf(false) }
var summarizationResult by remember { mutableStateOf(null) }
var isSummarizationLoading by remember { mutableStateOf(false) }
var isPageSliderVisible by remember { mutableStateOf(false) }
var sliderStartPage by remember { mutableIntStateOf(0) }
var sliderCurrentPage by remember { mutableFloatStateOf(0f) }
var isFastScrubbing by remember { mutableStateOf(false) }
val scrubDebounceJob = remember { mutableStateOf(null) }
var startPageThumbnail by remember { mutableStateOf(null) }
val speakerPlayer =
remember(context, coroutineScope) { SpeakerSamplePlayer(context, coroutineScope) }
var clickedLinkUrl by remember { mutableStateOf(null) }
val uriHandler = LocalUriHandler.current
@Suppress("DEPRECATION") val clipboardManager = LocalClipboardManager.current
val ttsController = rememberTtsController()
val ttsState by ttsController.ttsState.collectAsState()
ttsState.currentText
var showRenameBookmarkDialog by remember { mutableStateOf(null) }
var isOcrModelDownloading by remember { mutableStateOf(false) }
LaunchedEffect(isOcrModelDownloading) {
if (isOcrModelDownloading) {
delay(10_000)
isOcrModelDownloading = false
}
}
val saveStateAndExit = {
val activePage = richTextController?.activePageIndex ?: -1
Timber.tag("RichTextFlow").i("System Exit: isEditMode=$isEditMode, richActivePage=$activePage")
if (isLoadingDocument) {
onNavigateBack()
} else {
ttsController.stop()
coroutineScope.launch {
withContext(NonCancellable) {
if (richTextController != null) {
Timber.tag("RichTextFlow").d("Forcing RichTextController immediate sync and save...")
richTextController.saveImmediate()
}
if (totalDisplayPages > 0) {
onSavePosition(currentPage, totalDisplayPages)
if (currentBookId != null) {
annotationRepository.saveAnnotations(currentBookId!!, allAnnotations)
textBoxRepository.saveTextBoxes(currentBookId!!, textBoxes.toList())
}
val objectList = bookmarks.map { bookmark ->
JSONObject().apply {
put("pageIndex", bookmark.pageIndex)
put("title", bookmark.title)
put("totalPages", bookmark.totalPages)
}
}
val bookmarksJson = JSONArray(objectList).toString()
onBookmarksChanged(bookmarksJson)
}
}
Timber.tag("AnnotationSync").d("Save complete. Navigating back.")
onNavigateBack()
}
}
}
val onZoomChangeStable = remember { { scale: Float -> currentPageScale = scale } }
val onHighlightLoadingStable = remember {
{ isLoading: Boolean -> isHighlightingLoading = isLoading }
}
val onShowDictionaryUpsellDialogStable = remember { { showDictionaryUpsellDialog = true } }
val onWordSelectedForAiDefinitionStable = remember(isProUser, executeWithOcrCheck) {
{ text: String ->
executeWithOcrCheck {
selectedTextForAi = text
showAiDefinitionPopup = true
coroutineScope.launch {
isAiDefinitionLoading = true
aiDefinitionResult = null
fetchAiDefinition(text = text, onUpdate = { chunk ->
val currentDefinition = aiDefinitionResult?.definition ?: ""
aiDefinitionResult = AiDefinitionResult(
definition = currentDefinition + chunk
)
}, onError = { error ->
aiDefinitionResult = AiDefinitionResult(error = error)
}, onFinish = { isAiDefinitionLoading = false })
}
}
}
}
val onLinkClickedStable = remember { { url: String -> clickedLinkUrl = url } }
val onInternalLinkNavStable = remember(displayMode) {
{ targetPage: Int ->
coroutineScope.launch {
if (targetPage in 0 until totalPages) {
if (displayMode == DisplayMode.PAGINATION) {
pagerState.animateScrollToPage(targetPage)
} else {
verticalReaderState.scrollToPage(targetPage)
}
}
}
Unit
}
}
val onBookmarkClickStable =
remember(bookmarks, pdfDocument, currentBookId, flatTableOfContents, totalPages) {
{ pageIndex: Int -> onToggleBookmark(pageIndex) }
}
val onOcrStateChangeStable = remember {
{ isScanning: Boolean -> onOcrStateChange(isScanning) }
}
val onGetOcrSearchRectsStable = remember(pdfTextRepository, pdfDocument) {
val callback: suspend (Int, String) -> List = { page, query ->
if (pdfDocument != null) {
val hasNative = pdfTextRepository.hasNativeText(pdfDocument!!, page)
if (!hasNative) {
pdfTextRepository.getOcrSearchRects(
document = pdfDocument!!,
pageIndex = page,
query = query,
onModelDownloading = { isOcrModelDownloading = true })
} else {
emptyList()
}
} else {
emptyList()
}
}
callback
}
suspend fun summarizeCurrentPage(
onUpdate: (SummarizationResult) -> Unit, onFinish: () -> Unit
) {
val currentPageIndex = currentPage
val virtualPage =
if (virtualPages.isNotEmpty() && currentPageIndex in virtualPages.indices) {
virtualPages[currentPageIndex]
} else {
null
}
if (virtualPage is VirtualPage.BlankPage) {
onUpdate(SummarizationResult(error = "Cannot summarize a blank page."))
onFinish()
return
}
val pdfPageIndex = (virtualPage as? VirtualPage.PdfPage)?.pdfIndex ?: currentPageIndex
val doc = pdfDocument ?: run {
onUpdate(SummarizationResult(error = "Document not loaded."))
onFinish()
return
}
Timber.d(
"Starting summarization for PDF page: $pdfPageIndex (Display Page: $currentPageIndex)"
)
withContext(Dispatchers.IO) {
var pageBitmap: Bitmap? = null
var connection: HttpURLConnection? = null
try {
pageBitmap = renderPageToBitmap(doc, pdfPageIndex)
if (pageBitmap == null) {
throw Exception("Could not render page to bitmap.")
}
val outputStream = ByteArrayOutputStream()
pageBitmap.compress(Bitmap.CompressFormat.JPEG, 85, outputStream)
val imageBytes = outputStream.toByteArray()
val base64Image = Base64.encodeToString(imageBytes, Base64.NO_WRAP)
pageBitmap.recycle()
pageBitmap = null
val url = URL(summarizationUrl)
connection = url.openConnection() as HttpURLConnection
connection.requestMethod = "POST"
connection.setRequestProperty("Content-Type", "application/json; charset=UTF-8")
connection.setRequestProperty("Accept", "application/json")
connection.connectTimeout = 15000
connection.readTimeout = 180000
connection.doOutput = true
connection.doInput = true
val jsonPayload = JSONObject().apply {
put("content_type", "image")
put("data", base64Image)
}
connection.outputStream.use { os ->
os.write(jsonPayload.toString().toByteArray(Charsets.UTF_8))
}
val responseCode = connection.responseCode
Timber.d("Summarization API response code: $responseCode")
if (responseCode == HttpURLConnection.HTTP_OK) {
val fullText = StringBuilder()
var lastResult: SummarizationResult? = null
connection.inputStream.bufferedReader(Charsets.UTF_8).use { reader ->
var line: String?
while (reader.readLine().also { line = it } != null) {
try {
val jsonResponse = JSONObject(line!!)
jsonResponse.optString("chunk").takeIf { it.isNotEmpty() }?.let {
fullText.append(it)
lastResult = SummarizationResult(summary = fullText.toString())
@Suppress("UNNECESSARY_NOT_NULL_ASSERTION") onUpdate(lastResult!!)
}
jsonResponse.optString("error").takeIf { it.isNotEmpty() }?.let {
lastResult = SummarizationResult(error = it)
onUpdate(lastResult)
}
} catch (e: Exception) {
Timber.w(e, "Could not parse stream line: $line")
}
}
}
if (fullText.isEmpty() && lastResult?.error == null) {
onUpdate(
SummarizationResult(
error = "Failed to parse summary from server response."
)
)
}
} else {
val errorBody = try {
connection.errorStream?.bufferedReader()?.use { it.readText() }
} catch (_: Exception) {
null
}
Timber.e("Summarization API error: $responseCode. Body: $errorBody")
val errorDetail = try {
errorBody?.let { JSONObject(it).getString("detail") }
} catch (_: Exception) {
"Could not fetch summary."
}
onUpdate(
SummarizationResult(
error = "Error: $responseCode. ${errorDetail ?: "An unknown server error occurred."}"
)
)
}
} catch (e: Exception) {
Timber.e(e, "Exception during PDF page summarization: ${e.message}")
onUpdate(SummarizationResult(error = "An error occurred: ${e.localizedMessage}"))
} finally {
pageBitmap?.recycle()
connection?.disconnect()
onFinish()
}
}
}
fun isAnnotationHit(
annotation: PdfAnnotation, hitPoint: PdfPoint, threshold: Float = 0.05f
): Boolean {
return annotation.points.any { p ->
val dx = p.x - hitPoint.x
val dy = p.y - hitPoint.y
(dx * dx + dy * dy) < (threshold * threshold)
}
}
fun startTts(pageToReadOverride: Int? = null) {
Timber.d("TTS button clicked: Starting TTS for current page")
if (pdfDocument == null || totalPages == 0) {
return
}
coroutineScope.launch {
val pageToRead = pageToReadOverride ?: currentPage
var rawPageText: String? = null
var tempPage: PdfPageKt? = null
var tempTextPage: PdfTextPageKt? = null
var ocrAttempted = false
try {
withContext(Dispatchers.IO) {
Timber.d("TTS: Opening page $pageToRead for Pdfium text extraction.")
tempPage = pdfDocument!!.openPage(pageToRead)
tempTextPage = tempPage.openTextPage()
val charCount = tempTextPage.textPageCountChars()
if (charCount > 0) {
rawPageText = tempTextPage.textPageGetText(0, charCount)?.trim()
if (rawPageText.isNullOrBlank()) {
Timber.d(
"TTS: Pdfium extracted text but it's blank (charCount: $charCount)."
)
} else {
Timber.d(
"TTS: Text extracted via Pdfium (length: ${rawPageText.length})."
)
}
} else {
Timber.d(
"TTS: No characters found by Pdfium (charCount is 0) for page $pageToRead."
)
}
}
} catch (e: Exception) {
Timber.e(e, "TTS: Error extracting text via Pdfium for page $pageToRead")
} finally {
withContext(Dispatchers.IO) { tempTextPage?.close() }
}
if (rawPageText.isNullOrBlank()) {
Timber.i(
"TTS: Pdfium text is blank or extraction failed. Attempting OCR for page $pageToRead."
)
ocrAttempted = true
ocrUsedForCurrentPageTts = true
var ocrBitmap: Bitmap? = null
try {
if (tempPage == null) {
withContext(Dispatchers.IO) {
tempPage?.close()
Timber.d("TTS/OCR: Re-opening page $pageToRead for bitmap rendering.")
tempPage = pdfDocument!!.openPage(pageToRead)
}
}
val pageForOcr = tempPage ?: throw IllegalStateException(
"TTS/OCR: PDF page couldn't be opened for OCR."
)
val ocrBitmapWidth = 1080
val ocrBitmapHeight: Int
withContext(Dispatchers.IO) {
val originalWidthPoints = pageForOcr.getPageWidthPoint()
val originalHeightPoints = pageForOcr.getPageHeightPoint()
if (originalWidthPoints <= 0 || originalHeightPoints <= 0) {
throw IllegalStateException(
"TTS/OCR: Invalid page dimensions (points) from Pdfium for page $pageToRead."
)
}
val aspectRatio =
originalWidthPoints.toFloat() / originalHeightPoints.toFloat()
ocrBitmapHeight = (ocrBitmapWidth / aspectRatio).toInt()
if (ocrBitmapHeight <= 0) {
throw IllegalStateException(
"TTS/OCR: Calculated invalid bitmap dimensions for OCR ($ocrBitmapWidth x $ocrBitmapHeight) for page $pageToRead."
)
}
Timber.d(
"TTS/OCR: Rendering page $pageToRead to bitmap of size ${ocrBitmapWidth}x$ocrBitmapHeight."
)
ocrBitmap = createBitmap(ocrBitmapWidth, ocrBitmapHeight)
pageForOcr.renderPageBitmap(
bitmap = ocrBitmap,
startX = 0,
startY = 0,
drawSizeX = ocrBitmapWidth,
drawSizeY = ocrBitmapHeight,
renderAnnot = false
)
}
Timber.d("TTS/OCR: Bitmap rendered for page $pageToRead. Attempting OCR.")
rawPageText = OcrHelper.extractTextFromBitmap(ocrBitmap!!) {
isOcrModelDownloading = true
}?.text
if (!rawPageText.isNullOrBlank()) {
Timber.i(
"TTS: Text extracted via OCR for page $pageToRead (length: ${rawPageText?.length})."
)
} else {
Timber.w(
"TTS: OCR process completed for page $pageToRead but returned no text or blank text."
)
}
} catch (e: Exception) {
Timber.e(e, "TTS: Error during OCR process for page $pageToRead")
} finally {
ocrBitmap?.recycle()
withContext(Dispatchers.IO) {
tempPage?.close()
Timber.d("TTS/OCR: Closed page $pageToRead after OCR attempt.")
}
}
} else {
ocrUsedForCurrentPageTts = false
withContext(Dispatchers.IO) {
tempPage?.close()
Timber.d(
"TTS: Closed page $pageToRead after successful Pdfium text extraction."
)
}
}
if (rawPageText != null && rawPageText!!.isNotBlank()) {
val processedText = preprocessTextForTts(rawPageText!!)
ttsPageData = TtsPageData(pageToRead, processedText, ocrUsedForCurrentPageTts)
val chunks = splitTextIntoChunks(processedText.cleanText)
val bookTitle = pdfDocument?.getDocumentMeta()?.title?.takeIf { it.isNotBlank() }
?: pdfUri.lastPathSegment ?: "PDF Document"
val pageTitle = "Page ${pageToRead + 1}"
val ttsChunks = chunks.mapIndexed { index, text -> TtsChunk(text, "", index) }
ttsController.start(
chunks = ttsChunks,
bookTitle = bookTitle,
chapterTitle = pageTitle,
coverImageUri = null,
ttsMode = TtsMode.BASE.name,
playbackSource = "READER"
)
if (isAutoPagingForTts) {
delay(500)
isAutoPagingForTts = false
}
} else {
val finalError = when {
ocrAttempted -> "OCR found no text on this page."
else -> "Page seems empty or text not extractable."
}
ttsController.stop()
isAutoPagingForTts = false
Timber.w("TTS start failed: $finalError")
}
}
}
val permissionLauncher = rememberLauncherForActivityResult(
contract = ActivityResultContracts.RequestPermission(), onResult = { _ -> startTts() })
var showPermissionRationaleDialog by remember { mutableStateOf(false) }
DisposableEffect(Unit) {
onDispose {
Timber.d("Disposing sample MediaPlayer.")
speakerPlayer.release()
PdfBitmapPool.clear()
PdfThumbnailCache.clear()
}
}
LaunchedEffect(ttsState.sessionFinished) {
if (ttsState.sessionFinished && ttsState.playbackSource == "READER") {
val lastPlayedPage = ttsPageData?.pageIndex ?: (currentPage - 1)
val nextPage = lastPlayedPage + 1
if (nextPage < totalPages) {
when (displayMode) {
DisplayMode.PAGINATION -> {
Timber.d("TTS auto-paging to next page: ${nextPage + 1}")
isAutoPagingForTts = true
coroutineScope.launch { pagerState.animateScrollToPage(nextPage) }
}
DisplayMode.VERTICAL_SCROLL -> {
Timber.d("TTS auto-starting on next page (no scroll): ${nextPage + 1}")
startTts(pageToReadOverride = nextPage)
}
}
} else {
Timber.d("TTS finished on the last page.")
}
}
}
LaunchedEffect(isPageSliderVisible) {
if (isPageSliderVisible) {
val doc = pdfDocument
if (doc != null && totalPages > 0) {
Timber.d("Slider visible. Rendering thumbnail for page $sliderStartPage")
startPageThumbnail = renderPageToBitmap(doc, sliderStartPage)
Timber.d(
"Thumbnail rendering complete. Is bitmap null: ${startPageThumbnail == null}"
)
}
} else {
Timber.d("Slider hidden. Clearing thumbnail.")
startPageThumbnail?.recycle()
startPageThumbnail = null
}
}
LaunchedEffect(ttsState.currentText, ttsPageData, ttsState.startOffsetInSource) {
val currentText = ttsState.currentText
val currentTtsData = ttsPageData
val chunkIndex = ttsState.startOffsetInSource
if (currentText == null || currentTtsData == null) {
ttsHighlightData = null
return@LaunchedEffect
}
if (currentTtsData.fromOcr) {
ttsHighlightData = TtsHighlightData.Ocr(currentText)
} else {
var cleanStartIndex = -1
if (chunkIndex >= 0) {
val chunks = splitTextIntoChunks(currentTtsData.processedText.cleanText)
if (chunkIndex < chunks.size) {
var runningIndex = 0
for (i in 0 until chunkIndex) {
val prevChunk = chunks[i]
val foundAt = currentTtsData.processedText.cleanText.indexOf(
prevChunk, runningIndex
)
if (foundAt != -1) {
runningIndex = foundAt + prevChunk.length
}
}
cleanStartIndex = currentTtsData.processedText.cleanText.indexOf(
currentText, runningIndex
)
}
}
if (cleanStartIndex == -1) {
cleanStartIndex = currentTtsData.processedText.cleanText.indexOf(currentText)
}
if (cleanStartIndex != -1) {
val cleanEndIndex = cleanStartIndex + currentText.length
if (cleanEndIndex <= currentTtsData.processedText.indexMap.size) {
val originalStartIndex = currentTtsData.processedText.indexMap[cleanStartIndex]
val originalEndIndex = currentTtsData.processedText.indexMap[cleanEndIndex - 1]
val originalLength = originalEndIndex - originalStartIndex + 1
ttsHighlightData = TtsHighlightData.Pdfium(originalStartIndex, originalLength)
} else {
ttsHighlightData = null
}
} else {
ttsHighlightData = null
}
}
}
LaunchedEffect(pdfUri, pdfiumCore, documentPassword) {
Timber.d("LaunchedEffect: Loading PDF document for URI: $pdfUri")
isLoadingDocument = true
isDocumentReady = false
errorMessage = null
if (showPasswordDialog) isPasswordError = false
ttsController.stop()
ocrUsedForCurrentPageTts = false
flatTableOfContents = emptyList()
val fastId = getFastFileId(context, pdfUri)
currentBookId = fastId
val oldDoc = pdfDocument
val oldPfd = pfdState
pdfDocument = null
pfdState = null
totalPages = 0
if (oldDoc != null || oldPfd != null) {
withContext(Dispatchers.IO) {
oldDoc?.let {
try {
it.close()
} catch (e: Exception) {
Timber.e(e)
}
}
oldPfd?.let {
try {
it.close()
} catch (e: Exception) {
Timber.e(e)
}
}
}
}
var currentPfdOpened: ParcelFileDescriptor? = null
try {
withContext(Dispatchers.IO) {
Timber.d("Opening ParcelFileDescriptor for URI: $pdfUri")
currentPfdOpened = context.contentResolver.openFileDescriptor(pdfUri, "r")
if (currentPfdOpened == null) throw Exception("Failed to open ParcelFileDescriptor")
val doc = pdfiumCore.newDocument(currentPfdOpened, documentPassword)
if (!isActive) {
doc.close()
currentPfdOpened.close()
return@withContext
}
pdfDocument = doc
pfdState = currentPfdOpened
val pagesCount = doc.getPageCount()
totalPages = pagesCount
if (pagesCount > 0) {
val cachedRatios = pdfTextRepository.getPageRatios(currentBookId!!)
val ratios = if (cachedRatios != null && cachedRatios.size == pagesCount) {
Timber.i("Loaded ${cachedRatios.size} page ratios from cache.")
cachedRatios
} else {
val computedRatios = ArrayList(pagesCount)
doc.openPage(0).use { page ->
val width = page.getPageWidthPoint()
val height = page.getPageHeightPoint()
val ratio = if (height > 0) width.toFloat() / height.toFloat()
else 1.0f
repeat(pagesCount) { computedRatios.add(ratio) }
}
launch(Dispatchers.IO) {
val refinedRatios = ArrayList(computedRatios)
var hasChanges = false
for (i in 0 until pagesCount) {
if (!isActive) break
try {
doc.openPage(i).use { page ->
val width = page.getPageWidthPoint()
val height = page.getPageHeightPoint()
val ratio =
if (height > 0) width.toFloat() / height.toFloat()
else 1.0f
if (refinedRatios[i] != ratio) {
refinedRatios[i] = ratio
hasChanges = true
}
}
} catch (e: Exception) {
Timber.w(e, "Failed to calculate ratio for page $i")
}
}
if (hasChanges && isActive) {
withContext(Dispatchers.Main) {
pageAspectRatios = ArrayList(refinedRatios)
}
// Save to cache
pdfTextRepository.savePageRatios(
currentBookId!!, refinedRatios
)
}
}
computedRatios
}
pageAspectRatios = ratios
isDocumentReady = true
isLoadingDocument = false
withContext(Dispatchers.Main) {
showPasswordDialog = false
isPasswordError = false
}
launch(Dispatchers.IO) {
val refinedRatios = ArrayList(pageAspectRatios)
var hasChanges = false
for (i in 1 until pagesCount) {
if (!isActive) break
try {
doc.openPage(i).use { page ->
val width = page.getPageWidthPoint()
val height = page.getPageHeightPoint()
val ratio = if (height > 0) width.toFloat() / height.toFloat()
else 1.0f
if (refinedRatios[i] != ratio) {
refinedRatios[i] = ratio
hasChanges = true
}
}
if (hasChanges && (i % 500 == 0 || i == pagesCount - 1)) {
withContext(Dispatchers.Main) {
pageAspectRatios = ArrayList(refinedRatios)
}
hasChanges = false
}
} catch (e: Exception) {
Timber.w(e, "Failed to calculate ratio for page $i")
}
}
}
launch(Dispatchers.IO) {
try {
val tableOfContents = doc.getTableOfContents()
val flattened = flattenToc(tableOfContents)
withContext(Dispatchers.Main) { flatTableOfContents = flattened }
} catch (e: Exception) {
Timber.w(e, "Failed to load TOC")
}
}
} else {
isDocumentReady = true
isLoadingDocument = false
}
Timber.i("PDF document loaded optimistically. Total Pages: $totalPages.")
}
} catch (e: Exception) {
if (e is PdfPasswordException || e.cause is PdfPasswordException) {
Timber.w("PDF is password protected or password incorrect.")
withContext(Dispatchers.Main) {
if (documentPassword != null) {
isPasswordError = true
showPasswordDialog = true
} else {
showPasswordDialog = true
}
isLoadingDocument = false
}
} else {
Timber.e(e, "Error loading PDF document")
errorMessage = "Error loading PDF: ${e.localizedMessage}"
isLoadingDocument = false
}
if (pdfDocument == null) {
currentPfdOpened?.let {
try {
it.close()
} catch (_: Exception) {
}
}
pfdState = null
}
}
}
LaunchedEffect(pagerState.isScrollInProgress) {
if (pagerState.isScrollInProgress && showBars) {
showBars = false
Timber.d("Pager scroll detected, hiding bars.")
}
}
LaunchedEffect(pagerState.isScrollInProgress) {
if (pagerState.isScrollInProgress) {
if (showBars) {
showBars = false
Timber.d("Pager scroll detected, hiding bars.")
}
if (displayMode == DisplayMode.PAGINATION && !isAutoPagingForTts && (ttsState.isPlaying || ttsState.isLoading)) {
ttsController.stop()
}
}
}
var previousPage by remember(displayMode) { mutableIntStateOf(-1) }
LaunchedEffect(currentPage) {
if (previousPage != -1 && previousPage != currentPage) {
if (isAutoPagingForTts) {
startTts()
} else if (displayMode == DisplayMode.PAGINATION && (ttsState.isPlaying || ttsState.isLoading)) {
Timber.d("Page changed manually while TTS active, stopping.")
ttsController.stop()
}
}
previousPage = currentPage
}
LaunchedEffect(pagerState.currentPage) {
currentPageScale = 1f
ocrUsedForCurrentPageTts = false
}
DisposableEffect(Unit) {
onDispose {
Timber.d("DisposableEffect: Screen disposing. Closing PDF document and PFD.")
ttsController.stop()
PdfBitmapPool.clear()
PdfThumbnailCache.clear()
val docToClose = pdfDocument
val pfdToClose = pfdState
pdfDocument = null
pfdState = null
if (docToClose != null || pfdToClose != null) {
coroutineScope.launch(Dispatchers.IO) {
docToClose?.let {
Timber.d("Closing PDF document in onDispose.")
try {
it.close()
} catch (e: Exception) {
Timber.e(e, "Error closing document in onDispose")
}
}
pfdToClose?.let {
Timber.d("Closing ParcelFileDescriptor in onDispose: $it")
try {
it.close()
} catch (e: Exception) {
Timber.e(e, "Error closing ParcelFileDescriptor in onDispose")
}
}
}
}
}
}
var searchHighlightTarget by remember { mutableStateOf(null) }
var isOcrScanning by remember { mutableStateOf(false) }
LaunchedEffect(pdfUri, currentBookId, totalPages) {
if (currentBookId == null || totalPages == 0) return@LaunchedEffect
if (isBackgroundIndexing && backgroundIndexingProgress > 0f) return@LaunchedEffect
withContext(Dispatchers.IO) {
val storedLang = pdfTextRepository.getBookLanguage(currentBookId!!)
if (storedLang == null) {
pdfTextRepository.setBookLanguage(currentBookId!!, ocrLanguage.name)
}
isBackgroundIndexing = true
var bgPfd: ParcelFileDescriptor? = null
var bgDoc: PdfDocumentKt? = null
try {
val existingPages = pdfTextRepository.getIndexedPages(currentBookId!!)
val initialIndexedCount = existingPages.size
if (existingPages.size >= totalPages) {
Timber.d("Indexer: All pages already indexed.")
isBackgroundIndexing = false
backgroundIndexingProgress = 1f
return@withContext
}
Timber.d(
"Indexer: Starting background indexing for ${totalPages - existingPages.size} pages."
)
bgPfd = context.contentResolver.openFileDescriptor(pdfUri, "r")
if (bgPfd != null) {
bgDoc = pdfiumCore.newDocument(bgPfd, documentPassword)
val pagesToIndex = (0 until totalPages).filter { !existingPages.contains(it) }
val totalToDo = pagesToIndex.size
var completed = 0
for (pageIndex in pagesToIndex) {
if (!isActive) break
try {
pdfTextRepository.indexPage(
bookId = currentBookId!!,
document = bgDoc,
pageIndex = pageIndex,
onOcrModelDownloading = { isOcrModelDownloading = true })
} catch (e: Exception) {
Timber.e(e, "Indexer: Failed on page $pageIndex")
}
completed++
if (completed % 5 == 0 || completed == totalToDo) {
val totalIndexedSoFar = initialIndexedCount + completed
backgroundIndexingProgress =
totalIndexedSoFar.toFloat() / totalPages.toFloat()
}
}
}
} catch (e: Exception) {
Timber.e(e, "Indexer: Fatal error")
} finally {
try {
bgDoc?.close()
bgPfd?.close()
} catch (e: Exception) {
Timber.e(e, "Indexer: Cleanup failed")
}
isBackgroundIndexing = false
}
}
}
var activeQuery by remember { mutableStateOf("") }
val dummySearcher: suspend (String) -> List = { emptyList() }
val searchState = rememberSearchState(scope = coroutineScope, searcher = dummySearcher)
var smartSearchResult by remember { mutableStateOf(null) }
var currentPdfSearchResult by remember { mutableStateOf(null) }
val density = LocalDensity.current
val navBarHeight = WindowInsets.systemBars.getBottom(density)
val imeHeight = WindowInsets.ime.getBottom(density)
val bottomScrollLimitPx = remember(isEditMode, imeHeight, navBarHeight, dockLocation, isDockMinimized) {
if (isEditMode) {
if (imeHeight > 0) {
imeHeight.toFloat()
} else {
if (dockLocation == DockLocation.BOTTOM && !isDockMinimized) {
with(density) { 100.dp.toPx() }
} else {
with(density) { 16.dp.toPx() } + navBarHeight
}
}
} else {
if (showBars) {
with(density) { 56.dp.toPx() } + navBarHeight
} else {
navBarHeight.toFloat()
}
}
}
val statusBarHeight = WindowInsets.statusBars.getTop(density)
val topBarHeightPx = with(density) { 56.dp.toPx() }
val topScrollLimitPx = remember(showBars, statusBarHeight) {
if (showBars) {
statusBarHeight + topBarHeightPx
} else {
0f
}
}
LaunchedEffect(searchState.searchQuery, currentBookId) {
val query = searchState.searchQuery
if (query.isBlank() || currentBookId == null) {
smartSearchResult = null
currentPdfSearchResult = null
return@LaunchedEffect
}
pdfTextRepository.searchBookSmart(currentBookId!!, query).conflate().collect { result ->
smartSearchResult = result
}
}
fun parseSnippet(rawSnippet: String): AnnotatedString {
return buildAnnotatedString {
val boldStyle = SpanStyle(fontWeight = FontWeight.Bold, color = Color.Blue)
val regex = "(.*?)".toRegex()
val matches = regex.findAll(rawSnippet)
var lastAppendPosition = 0
for (match in matches) {
append(rawSnippet.substring(lastAppendPosition, match.range.first))
val content = match.groupValues[1]
pushStyle(boldStyle)
append(content)
pop()
lastAppendPosition = match.range.last + 1
}
if (lastAppendPosition < rawSnippet.length) {
append(rawSnippet.substring(lastAppendPosition))
}
}
}
LaunchedEffect(activeQuery, currentBookId) {
val query = activeQuery
if (query.isBlank() || currentBookId == null) {
searchState.searchResults = emptyList()
searchState.isSearchInProgress = false
return@LaunchedEffect
}
searchState.isSearchInProgress = true
delay(300)
pdfTextRepository.searchBookFlow(currentBookId!!, query).conflate().collect { matches ->
val results = mutableListOf()
val regexPattern = try {
Regex("(?i)\\b${Regex.escape(query)}")
} catch (_: Exception) {
Regex("(?i)${Regex.escape(query)}")
}
matches.forEach { match ->
val regexMatches = regexPattern.findAll(match.content)
var hasFoundMatch = false
regexMatches.forEachIndexed { occurrenceIndex, _ ->
hasFoundMatch = true
results.add(
SearchResult(
locationInSource = match.pageIndex,
locationTitle = "Page ${match.pageIndex + 1}",
snippet = parseSnippet(match.snippet),
query = query,
occurrenceIndexInLocation = occurrenceIndex,
chunkIndex = match.pageIndex
)
)
}
if (!hasFoundMatch) {
results.add(
SearchResult(
locationInSource = match.pageIndex,
locationTitle = "Page ${match.pageIndex + 1}",
snippet = parseSnippet(match.snippet),
query = query,
occurrenceIndexInLocation = 0,
chunkIndex = match.pageIndex
)
)
}
}
searchState.searchResults = results
searchState.isSearchInProgress = false
delay(250)
}
}
val isTtsSessionActive =
(ttsState.currentText != null || ttsState.isLoading) && ttsState.playbackSource == "READER"
val onInternalLinkNav: (Int) -> Unit = { targetPage ->
coroutineScope.launch {
if (targetPage in 0 until totalPages) {
if (displayMode == DisplayMode.PAGINATION) {
pagerState.animateScrollToPage(targetPage)
} else {
verticalReaderState.scrollToPage(targetPage)
}
}
}
}
val paginationDraggingOriginPage = remember(paginationDraggingBoxId, textBoxes) {
if (paginationDraggingBoxId == null) null
else textBoxes.find { it.id == paginationDraggingBoxId }?.pageIndex
}
val dynamicBeyondViewportPageCount = remember(
paginationDraggingOriginPage,
pagerState.currentPage
) {
if (paginationDraggingOriginPage != null) {
val distance = kotlin.math.abs(pagerState.currentPage - paginationDraggingOriginPage)
(distance + 1).coerceAtLeast(1)
} else {
1
}
}
fun navigateToPdfSearchResult(result: SearchResult) {
currentPdfSearchResult = result
searchHighlightTarget = result
coroutineScope.launch {
if (displayMode == DisplayMode.PAGINATION) {
if (pagerState.currentPage != result.locationInSource) {
pagerState.scrollToPage(result.locationInSource)
}
} else {
verticalReaderState.scrollToPage(result.locationInSource)
}
}
}
LaunchedEffect(searchState.isSearchActive) {
if (searchState.isSearchActive) {
delay(100)
focusRequester.requestFocus()
} else {
searchHighlightTarget = null
}
}
BackHandler(enabled = true) {
when {
showPasswordDialog -> {
onNavigateBack()
}
isFullScreen -> {
isFullScreen = false
}
showReindexDialog != null -> showReindexDialog = null
drawerState.isOpen -> {
coroutineScope.launch { drawerState.close() }
}
isEditMode -> {
richTextController?.clearSelection()
isEditMode = false
showBars = true
}
showSummarizationPopup -> showSummarizationPopup = false
showPermissionRationaleDialog -> showPermissionRationaleDialog = false
showSummarizationUpsellDialog -> showSummarizationUpsellDialog = false
showAiDefinitionPopup -> showAiDefinitionPopup = false
showDictionaryUpsellDialog -> showDictionaryUpsellDialog = false
isPageSliderVisible -> {
isPageSliderVisible = false
showBars = true
}
searchState.isSearchActive -> {
searchState.isSearchActive = false
searchState.onQueryChange("")
}
else -> {
saveStateAndExit()
}
}
}
ModalNavigationDrawer(
drawerState = drawerState, gesturesEnabled = drawerState.isOpen, drawerContent = {
ModalDrawerSheet(modifier = Modifier.windowInsetsPadding(WindowInsets.statusBars)) {
val drawerPagerState = rememberPagerState(pageCount = { 2 })
val drawerScope = rememberCoroutineScope()
Column(modifier = Modifier.fillMaxSize()) {
TabRow(selectedTabIndex = drawerPagerState.currentPage) {
Tab(selected = drawerPagerState.currentPage == 0, onClick = {
drawerScope.launch {
drawerPagerState.animateScrollToPage(0)
}
}, text = { Text("Chapters") })
Tab(
selected = drawerPagerState.currentPage == 1,
onClick = {
drawerScope.launch {
drawerPagerState.animateScrollToPage(1)
}
},
text = { Text("Bookmarks") },
modifier = Modifier.testTag("BookmarksTab")
)
}
HorizontalPager(
state = drawerPagerState, modifier = Modifier
.fillMaxWidth()
.weight(1f)
) { page ->
when (page) {
0 -> { // Chapters Page
if (flatTableOfContents.isEmpty()) {
Box(
modifier = Modifier
.fillMaxSize()
.padding(16.dp),
contentAlignment = Alignment.Center
) {
Text(
"Chapters are not available for this book.",
style = MaterialTheme.typography.bodyLarge,
textAlign = TextAlign.Center
)
}
} else {
val currentTocEntry by remember(
pagerState.currentPage, flatTableOfContents
) {
derivedStateOf {
flatTableOfContents.lastOrNull {
it.pageIndex <= pagerState.currentPage
}
}
}
LazyColumn(modifier = Modifier.fillMaxHeight()) {
itemsIndexed(
items = flatTableOfContents, key = { index, entry ->
"toc_${index}_${entry.pageIndex}_${entry.title.hashCode()}"
}) { _, entry ->
val isCurrentChapter = entry == currentTocEntry
ListItem(
headlineContent = {
Text(
entry.title,
fontWeight = if (isCurrentChapter) FontWeight.Bold
else FontWeight.Normal,
modifier = Modifier.padding(
start = (16 * entry.nestLevel).dp
)
)
}, colors = if (isCurrentChapter) {
ListItemDefaults.colors(
containerColor = MaterialTheme.colorScheme.primaryContainer,
headlineColor = MaterialTheme.colorScheme.onPrimaryContainer
)
} else {
ListItemDefaults.colors()
}, modifier = Modifier.clickable {
coroutineScope.launch {
drawerState.close()
if (displayMode == DisplayMode.PAGINATION) {
pagerState.scrollToPage(
entry.pageIndex
)
} else {
verticalReaderState.scrollToPage(
entry.pageIndex
)
}
}
})
HorizontalDivider()
}
}
}
}
1 -> { // Bookmarks Page
if (bookmarks.isEmpty()) {
Box(
modifier = Modifier
.fillMaxSize()
.padding(16.dp),
contentAlignment = Alignment.Center
) {
Text(
"You haven't added any bookmarks yet.",
style = MaterialTheme.typography.bodyLarge,
textAlign = TextAlign.Center
)
}
} else {
var bookmarkMenuExpandedFor by remember {
mutableStateOf(null)
}
var showDeleteConfirmDialogFor by remember {
mutableStateOf(null)
}
val sortedBookmarks = remember(bookmarks) {
bookmarks.sortedBy { it.pageIndex }
}
LazyColumn(modifier = Modifier.fillMaxSize()) {
itemsIndexed(
items = sortedBookmarks, key = { index, bookmark ->
"bm_${index}_${bookmark.pageIndex}"
}) { _, bookmark ->
ListItem(headlineContent = {
Text(
bookmark.title,
fontWeight = FontWeight.Bold,
maxLines = 1,
overflow = TextOverflow.Ellipsis
)
}, supportingContent = {
Text(
"Page ${bookmark.pageIndex + 1} of ${bookmark.totalPages}",
style = MaterialTheme.typography.bodySmall
)
}, trailingContent = {
Box {
IconButton(
onClick = {
bookmarkMenuExpandedFor = bookmark
}) {
Icon(
imageVector = Icons.Default.MoreVert,
contentDescription = "More options for bookmark"
)
}
DropdownMenu(
expanded = bookmarkMenuExpandedFor == bookmark,
onDismissRequest = {
bookmarkMenuExpandedFor = null
}) {
DropdownMenuItem(text = {
Text("Rename")
}, onClick = {
showRenameBookmarkDialog = bookmark
bookmarkMenuExpandedFor = null
})
DropdownMenuItem(text = {
Text("Delete")
}, onClick = {
showDeleteConfirmDialogFor = bookmark
bookmarkMenuExpandedFor = null
})
}
}
}, modifier = Modifier
.clickable {
coroutineScope.launch {
drawerState.close()
if (displayMode == DisplayMode.PAGINATION) {
pagerState.scrollToPage(
bookmark.pageIndex
)
} else {
verticalReaderState.scrollToPage(
bookmark.pageIndex
)
}
}
}
.testTag(
"BookmarkItem_${bookmark.pageIndex}"
))
HorizontalDivider()
}
}
showRenameBookmarkDialog?.let { bookmarkToRename ->
var newTitle by remember { mutableStateOf("") }
AlertDialog(onDismissRequest = {
showRenameBookmarkDialog = null
}, title = { Text("Rename Bookmark") }, text = {
OutlinedTextField(
value = newTitle,
onValueChange = { newTitle = it },
label = { Text("New Title") },
placeholder = {
Text(
text = bookmarkToRename.title,
maxLines = 1,
overflow = TextOverflow.Ellipsis,
style = MaterialTheme.typography.bodyMedium,
color = MaterialTheme.colorScheme.onSurfaceVariant.copy(
alpha = 0.6f
)
)
},
singleLine = true,
modifier = Modifier.fillMaxWidth()
)
}, confirmButton = {
TextButton(
onClick = {
if (newTitle.isNotBlank()) {
val updatedBookmark = bookmarkToRename.copy(
title = newTitle
)
bookmarks =
(bookmarks - bookmarkToRename) + updatedBookmark
}
showRenameBookmarkDialog = null
}) { Text("Save") }
}, dismissButton = {
TextButton(
onClick = {
showRenameBookmarkDialog = null
}) { Text("Cancel") }
})
}
showDeleteConfirmDialogFor?.let { bookmarkToDelete ->
AlertDialog(onDismissRequest = {
showDeleteConfirmDialogFor = null
}, title = { Text("Delete Bookmark?") }, text = {
Text(
"Are you sure you want to permanently delete this bookmark?"
)
}, confirmButton = {
TextButton(
onClick = {
bookmarks = bookmarks - bookmarkToDelete
showDeleteConfirmDialogFor = null
}) { Text("Delete") }
}, dismissButton = {
TextButton(
onClick = {
showDeleteConfirmDialogFor = null
}) { Text("Cancel") }
})
}
}
}
}
}
}
}
}) {
Scaffold(snackbarHost = { SnackbarHost(snackbarHostState) }) { paddingValues ->
BoxWithConstraints(modifier = Modifier
.fillMaxSize()
.padding(paddingValues)) {
IntSize(constraints.maxWidth, constraints.maxHeight)
val boxConstraints = constraints
val boxMaxWidthFloat = boxConstraints.maxWidth.toFloat()
val boxMaxHeightFloat = boxConstraints.maxHeight.toFloat()
if (richTextController != null && isEditMode && selectedTool == InkType.TEXT) {
BasicTextField(
value = richTextController.editingValue,
onValueChange = { newValue ->
richTextController.onValueChanged(newValue)
},
textStyle = TextStyle(
color = richTextController.currentStyle.color,
fontSize = richTextController.currentStyle.fontSize,
fontWeight = richTextController.currentStyle.fontWeight,
fontStyle = richTextController.currentStyle.fontStyle,
textDecoration = richTextController.currentStyle.textDecoration
),
modifier = Modifier
.size(1.dp)
.alpha(0f)
.clearAndSetSemantics { }
.focusRequester(richTextController.focusRequester)
.onKeyEvent { event ->
if (event.type == KeyEventType.KeyDown && event.key == Key.Backspace) {
val handled = richTextController.handleBackspaceAtStart()
if (handled) Timber.tag("RichTextFlow").d("KeyEvent: Backspace consumed by controller")
handled
} else {
false
}
}
.align(Alignment.TopStart),
)
}
// --- Main Content Area ---
Box(
modifier = Modifier
.fillMaxSize()
.padding(
top = verticalHeaderHeight, bottom = verticalFooterHeight
)
) {
when {
isLoadingDocument -> {
CircularProgressIndicator(modifier = Modifier.align(Alignment.Center))
}
errorMessage != null -> {
Box(
modifier = Modifier
.fillMaxSize()
.padding(16.dp),
contentAlignment = Alignment.Center
) {
Text(
text = errorMessage ?: "Failed to load PDF.",
color = MaterialTheme.colorScheme.error,
modifier = Modifier.padding(16.dp)
)
}
}
pdfDocument != null && totalPages > 0 -> {
val stablePdfDocument = remember(pdfDocument) { StableHolder(pdfDocument!!) }
when (displayMode) {
DisplayMode.PAGINATION -> {
Box(modifier = Modifier.fillMaxSize()) {
HorizontalPager(
state = pagerState,
modifier = Modifier.fillMaxSize(),
key = { it },
beyondViewportPageCount = dynamicBeyondViewportPageCount,
userScrollEnabled= currentPageScale == 1f && !(ttsState.isPlaying || ttsState.isLoading || searchState.isSearchActive) && !isPageSliderVisible && paginationDraggingBoxId == null
) { pageIndex ->
val isVisiblePage = remember(pagerState.currentPage, pageIndex) {
kotlin.math.abs(pagerState.currentPage - pageIndex) <= 1
}
val isPageBookmarked by remember(bookmarks, pageIndex) {
derivedStateOf {
bookmarks.any { it.pageIndex == pageIndex }
}
}
var ocrHighlightRects by remember {
mutableStateOf>(emptyList())
}
LaunchedEffect(searchHighlightTarget, pageIndex) {
val target = searchHighlightTarget
ocrHighlightRects = emptyList()
if (target != null && target.locationInSource == pageIndex) {
Timber.d(
"LaunchedEffect triggered for Page $pageIndex. Checking Native..."
)
val hasNative = pdfTextRepository.hasNativeText(
pdfDocument!!, pageIndex
)
Timber.d(
"Page $pageIndex Has Native Text: $hasNative"
)
if (!hasNative) {
Timber.d(
"Fetching OCR rects for query: '${target.query}'"
)
val rects = pdfTextRepository.getOcrSearchRects(
document = pdfDocument!!,
pageIndex = pageIndex,
query = target.query,
onModelDownloading = {
isOcrModelDownloading = true
})
Timber.d(
"Received ${rects.size} rects from Repository."
)
ocrHighlightRects = rects
} else {
Timber.d(
"Native text present. Skipping OCR highlighting."
)
}
}
}
val pageAnnotationsProvider =
remember(pageIndex, allAnnotationsProvider) {
{
allAnnotationsProvider()[pageIndex]
?: emptyList()
}
}
val stableOcrRects = remember(ocrHighlightRects) {
StableHolder(ocrHighlightRects)
}
val currentSelectedTool by rememberUpdatedState(selectedTool)
@Suppress("ControlFlowWithEmptyBody") val onDrawPagination =
remember(pageIndex) {
{ point: PdfPoint ->
if (currentSelectedTool == InkType.TEXT) {
} else if (currentSelectedTool == InkType.ERASER) {
val existing =
allAnnotations[pageIndex] ?: emptyList()
val toRemove = existing.filter {
isAnnotationHit(it, point)
}
if (toRemove.isNotEmpty()) {
val batch =
erasedAnnotationsFromStroke.getOrPut(
pageIndex
) {
mutableListOf()
}
batch.addAll(toRemove)
val newList =
existing - toRemove.toSet()
allAnnotations =
allAnnotations + (pageIndex to newList)
}
} else {
val pointWithTime = point.copy(
timestamp = System.currentTimeMillis()
)
drawingState.onDraw(pointWithTime)
}
}
}
val currentStrokeColorState by rememberUpdatedState(
currentStrokeColor
)
val currentStrokeWidthState by rememberUpdatedState(
currentStrokeWidth
)
@Suppress("ControlFlowWithEmptyBody") val onDrawStartPagination =
remember(pageIndex) {
{ point: PdfPoint ->
if (showToolSettings) {
showToolSettings = false
} else {
if (currentSelectedTool == InkType.TEXT) {
} else if (currentSelectedTool == InkType.ERASER) {
erasedAnnotationsFromStroke.clear()
val existing = allAnnotations[pageIndex]
?: emptyList()
val toRemove = existing.filter {
isAnnotationHit(
it, point
)
}
if (toRemove.isNotEmpty()) {
val batch =
erasedAnnotationsFromStroke.getOrPut(
pageIndex
) {
mutableListOf()
}
batch.addAll(toRemove)
val newList =
existing - toRemove.toSet()
allAnnotations =
allAnnotations + (pageIndex to newList)
}
} else {
val pointWithTime = point.copy(
timestamp = System.currentTimeMillis()
)
drawingState.onDrawStart(
pageIndex,
pointWithTime,
currentSelectedTool,
currentStrokeColorState,
currentStrokeWidthState
)
}
}
}
}
val virtualPage =
if (virtualPages.isNotEmpty()) virtualPages.getOrNull(
pageIndex
)
else VirtualPage.PdfPage(pageIndex)
PdfPageComposable(
pdfDocument = stablePdfDocument,
pageIndex = pageIndex,
virtualPage = virtualPage,
totalPages = totalDisplayPages,
isDarkMode = isPdfDarkMode,
isScrollLocked = isScrollLocked,
onScaleChanged = { newScale ->
if (pagerState.currentPage == pageIndex) {
currentPageScale = newScale
}
},
ttsHighlightData = if (pagerState.currentPage == pageIndex) ttsHighlightData
else null,
searchQuery = searchState.searchQuery,
searchHighlightMode = searchHighlightMode,
searchResultToHighlight = if (pagerState.currentPage == pageIndex) searchHighlightTarget
else null,
ocrHoverHighlights = stableOcrRects,
modifier = Modifier.fillMaxSize(),
showAllTextHighlights = showAllTextHighlights,
onHighlightLoading = { /* no-op for paginated mode */ },
onSingleTap = onSingleTapStable,
isProUser = isProUser,
onShowDictionaryUpsellDialog = {
showDictionaryUpsellDialog = true
},
onWordSelectedForAiDefinition = { text ->
selectedTextForAi = text
showAiDefinitionPopup = true
coroutineScope.launch {
isAiDefinitionLoading = true
aiDefinitionResult = null
fetchAiDefinition(
text = text,
onUpdate = { chunk ->
val currentDefinition =
aiDefinitionResult?.definition ?: ""
aiDefinitionResult = AiDefinitionResult(
definition = currentDefinition + chunk
)
},
onError = { error ->
aiDefinitionResult = AiDefinitionResult(
error = error
)
},
onFinish = {
isAiDefinitionLoading = false
})
}
},
onOcrStateChange = onOcrStateChange,
onLinkClicked = { url -> clickedLinkUrl = url },
onInternalLinkClicked = onInternalLinkNav,
isBookmarked = isPageBookmarked,
onBookmarkClick = { onToggleBookmark(pageIndex) },
isZoomEnabled = true,
clearSelectionTrigger = selectionClearTrigger,
pageAnnotations = pageAnnotationsProvider,
drawingState = drawingState,
onDrawStart = onDrawStartPagination,
onDraw = onDrawPagination,
selectedTool = selectedTool,
onDrawEnd = {
val finalAnnotation = drawingState.onDrawEnd()
if (finalAnnotation != null) {
val pageIdx = finalAnnotation.pageIndex
val existing =
allAnnotations[pageIdx] ?: emptyList()
allAnnotations =
allAnnotations + (pageIdx to (existing + finalAnnotation))
undoStack.add(
HistoryAction.Add(
pageIdx, finalAnnotation
)
)
redoStack.clear()
}
if (selectedTool == InkType.ERASER && erasedAnnotationsFromStroke.isNotEmpty()) {
val removalMap =
erasedAnnotationsFromStroke.mapValues {
it.value.toList()
}
undoStack.add(
HistoryAction.Remove(removalMap)
)
redoStack.clear()
erasedAnnotationsFromStroke.clear()
}
},
onOcrModelDownloading = {
isOcrModelDownloading = true
},
onTwoFingerSwipe = { direction ->
coroutineScope.launch {
val targetPage =
pagerState.currentPage + direction
if (targetPage in 0 until totalDisplayPages) {
pagerState.animateScrollToPage(
targetPage
)
}
}
},
richTextController = richTextController,
isEditMode = isDrawingActive,
textBoxes = textBoxes.filter { it.pageIndex == pageIndex },
selectedTextBoxId = selectedTextBoxId,
onTextBoxChange = { updatedBox ->
val idx = textBoxes.indexOfFirst { it.id == updatedBox.id }
if (idx != -1) textBoxes[idx] = updatedBox
},
onTextBoxSelect = { id ->
selectedTextBoxId = id
richTextController?.clearSelection()
},
draggingBoxId = paginationDraggingBoxId,
onTextBoxDragStart = { box, _, _ ->
val pageAspectRatio = displayPageRatios.getOrElse(pageIndex) { 1f }
val containerWidthPx = boxConstraints.maxWidth
val containerHeightPx = boxConstraints.maxHeight
var renderedWidthInt = containerWidthPx
var renderedHeightInt = (renderedWidthInt / pageAspectRatio).toInt()
if (renderedHeightInt > containerHeightPx) {
renderedHeightInt = containerHeightPx
renderedWidthInt = (renderedHeightInt * pageAspectRatio).toInt()
}
val renderedWidth = renderedWidthInt.toFloat()
val renderedHeight = renderedHeightInt.toFloat()
val offsetX = (containerWidthPx - renderedWidth) / 2f
val offsetY = (containerHeightPx - renderedHeight) / 2f
paginationDraggingBoxId = box.id
paginationOriginalRelSize = Size(box.relativeBounds.width, box.relativeBounds.height)
paginationDraggingSize = Size(
box.relativeBounds.width * renderedWidth,
box.relativeBounds.height * renderedHeight
)
paginationDraggingOffset = Offset(
offsetX + (box.relativeBounds.left * renderedWidth),
offsetY + (box.relativeBounds.top * renderedHeight)
)
paginationDragPageHeight = renderedHeight
},
onTextBoxDrag = { dragDelta ->
paginationDraggingOffset += dragDelta
val edgeThreshold = 60f
val screenWidth = boxConstraints.maxWidth.toFloat()
val isMovingLeft = dragDelta.x < 0
val isMovingRight = dragDelta.x > 0
if (paginationDraggingOffset.x < edgeThreshold && isMovingLeft) {
coroutineScope.launch {
if (pagerState.currentPage > 0 && !pagerState.isScrollInProgress) {
pagerState.animateScrollToPage(pagerState.currentPage - 1)
}
}
} else if (paginationDraggingOffset.x + paginationDraggingSize.width > screenWidth - edgeThreshold && isMovingRight) {
coroutineScope.launch {
if (pagerState.currentPage < totalDisplayPages - 1 && !pagerState.isScrollInProgress) {
pagerState.animateScrollToPage(pagerState.currentPage + 1)
}
}
}
},
onTextBoxDragEnd = {
val boxId = paginationDraggingBoxId
if (boxId != null) {
coroutineScope.launch {
val targetPage = pagerState.currentPage
val targetVirtualPage = virtualPages.getOrNull(targetPage)
val pageAspectRatio = if (targetVirtualPage is VirtualPage.BlankPage) {
if (targetVirtualPage.height > 0) targetVirtualPage.width.toFloat() / targetVirtualPage.height.toFloat() else 1f
} else {
displayPageRatios.getOrElse(targetPage) { 1f }
}
val containerWidthPx = boxConstraints.maxWidth
val containerHeightPx = boxConstraints.maxHeight
var renderedWidthInt = containerWidthPx
var renderedHeightInt = (renderedWidthInt / pageAspectRatio).toInt()
if (renderedHeightInt > containerHeightPx) {
renderedHeightInt = containerHeightPx
renderedWidthInt = (renderedHeightInt * pageAspectRatio).toInt()
}
val renderedWidth = renderedWidthInt.toFloat()
val renderedHeight = renderedHeightInt.toFloat()
val offsetX = (containerWidthPx - renderedWidth) / 2f
val offsetY = (containerHeightPx - renderedHeight) / 2f
val paddingPx = with(density) { 14.dp.toPx() }
val padRelX = if (renderedWidth > 0) paddingPx / renderedWidth else 0f
val padRelY = if (renderedHeight > 0) paddingPx / renderedHeight else 0f
val relW = paginationOriginalRelSize.width
val relH = paginationOriginalRelSize.height
val rawRelX = (paginationDraggingOffset.x - offsetX) / renderedWidth
val rawRelY = (paginationDraggingOffset.y - offsetY) / renderedHeight
val maxRelX = (1f - relW - padRelX).coerceAtLeast(padRelX)
val maxRelY = (1f - relH - padRelY).coerceAtLeast(padRelY)
val finalRelX = rawRelX.coerceIn(padRelX, maxRelX)
val finalRelY = rawRelY.coerceIn(padRelY, maxRelY)
val targetOffset = Offset(
offsetX + (finalRelX * renderedWidth),
offsetY + (finalRelY * renderedHeight)
)
val startOffset = paginationDraggingOffset
Animatable(0f).animateTo(1f) {
paginationDraggingOffset = lerp(startOffset, targetOffset, value)
}
val idx = textBoxes.indexOfFirst { it.id == boxId }
if (idx != -1) {
val oldBox = textBoxes[idx]
val fontScale = if (paginationDragPageHeight > 0 && renderedHeight > 0)
paginationDragPageHeight / renderedHeight else 1f
textBoxes[idx] = oldBox.copy(
pageIndex = targetPage,
relativeBounds = Rect(finalRelX, finalRelY, finalRelX + relW, finalRelY + relH),
fontSize = oldBox.fontSize * fontScale
)
selectedTextBoxId = boxId
}
paginationDraggingBoxId = null
}
} else {
paginationDraggingBoxId = null
}
},
onDragPageTurn = { /* Handled in onTextBoxDrag */ },
isVisible = isVisiblePage,
)
}
if (paginationDraggingBoxId != null) {
val draggedBox = textBoxes.find { it.id == paginationDraggingBoxId }
if (draggedBox != null) {
val fontScaleRatio = if (paginationDraggingSize.height > 0)
paginationDragPageHeight / paginationDraggingSize.height else 1f
val screenHeight = boxConstraints.maxHeight.toFloat()
val boxBottomY = paginationDraggingOffset.y + paginationDraggingSize.height
val spaceBelow = screenHeight - boxBottomY
val overlayHandlePos = if (spaceBelow < with(density) { 60.dp.toPx() }) HandlePosition.TOP else HandlePosition.BOTTOM
Box(
modifier = Modifier
.offset {
IntOffset(
paginationDraggingOffset.x.roundToInt(),
paginationDraggingOffset.y.roundToInt()
)
}
) {
ResizableTextBox(
box = draggedBox.copy(
relativeBounds = Rect(0f, 0f, 1f, 1f),
fontSize = draggedBox.fontSize * fontScaleRatio
),
isSelected = true,
isEditMode = false, // Purely visual
isDarkMode = isPdfDarkMode,
pageWidthPx = paginationDraggingSize.width,
pageHeightPx = paginationDraggingSize.height,
handlePosition = overlayHandlePos,
onBoundsChanged = {},
onTextChanged = {},
onSelect = {},
onDragStart = {},
onDrag = { _, _ -> },
onDragEnd = {}
)
}
}
}
}
}
DisplayMode.VERTICAL_SCROLL -> {
val headerHeight = 0.dp
val footerHeight = 0.dp
val currentSelectedTool by rememberUpdatedState(selectedTool)
val currentStrokeColorState by rememberUpdatedState(
currentStrokeColor
)
val currentStrokeWidthState by rememberUpdatedState(
currentStrokeWidth
)
@Suppress("ControlFlowWithEmptyBody") val onDrawStartStable =
remember {
{ pageIndex: Int, point: PdfPoint ->
if (showToolSettings) {
showToolSettings = false
} else {
if (currentSelectedTool == InkType.TEXT) {
} else if (currentSelectedTool == InkType.ERASER) {
erasedAnnotationsFromStroke.clear()
val existing =
allAnnotations[pageIndex] ?: emptyList()
val toRemove = existing.filter {
isAnnotationHit(it, point)
}
if (toRemove.isNotEmpty()) {
val batch =
erasedAnnotationsFromStroke.getOrPut(
pageIndex
) {
mutableListOf()
}
batch.addAll(toRemove)
val newList =
existing - toRemove.toSet()
allAnnotations =
allAnnotations + (pageIndex to newList)
}
} else {
val pointWithTime = point.copy(
timestamp = System.currentTimeMillis()
)
drawingState.onDrawStart(
pageIndex,
pointWithTime,
currentSelectedTool,
currentStrokeColorState,
currentStrokeWidthState
)
}
}
}
}
val onDrawStable = remember {
{ pageIndex: Int, point: PdfPoint ->
if (currentSelectedTool == InkType.ERASER) {
val existing =
allAnnotations[pageIndex] ?: emptyList()
val toRemove = existing.filter {
isAnnotationHit(it, point)
}
if (toRemove.isNotEmpty()) {
val batch =
erasedAnnotationsFromStroke.getOrPut(
pageIndex
) { mutableListOf() }
batch.addAll(toRemove)
val newList = existing - toRemove.toSet()
allAnnotations =
allAnnotations + (pageIndex to newList)
}
} else {
val pointWithTime = point.copy(
timestamp = System.currentTimeMillis()
)
drawingState.onDraw(pointWithTime)
}
}
}
Box(modifier = Modifier
.fillMaxSize()
.clip(RectangleShape)) {
val docHolder = remember(pdfDocument) {
StableHolder(pdfDocument!!)
}
val bookmarksHolder =
remember(bookmarks) { StableHolder(bookmarks) }
val ratiosHolder = remember(displayPageRatios) {
StableHolder(displayPageRatios)
}
PdfVerticalReader(
state = verticalReaderState,
pdfDocument = docHolder,
isDarkMode = isPdfDarkMode,
isScrollLocked = isScrollLocked,
totalPages = totalDisplayPages,
pageAspectRatios = ratiosHolder,
virtualPages = virtualPages,
headerHeight = headerHeight,
footerHeight = footerHeight,
onPageClick = onSingleTapStable,
modifier = Modifier.testTag(VERTICAL_SCROLL_TAG),
onZoomChange = onZoomChangeStable,
showAllTextHighlights = showAllTextHighlights,
onHighlightLoading = onHighlightLoadingStable,
searchQuery = searchState.searchQuery,
searchHighlightMode = searchHighlightMode,
searchResultToHighlight = searchHighlightTarget,
isProUser = isProUser,
onShowDictionaryUpsellDialog = onShowDictionaryUpsellDialogStable,
onWordSelectedForAiDefinition = onWordSelectedForAiDefinitionStable,
ttsHighlightData = ttsHighlightData,
ttsReadingPage = ttsPageData?.pageIndex,
onLinkClicked = onLinkClickedStable,
onInternalLinkClicked = onInternalLinkNavStable,
bookmarks = bookmarksHolder,
onBookmarkClick = onBookmarkClickStable,
onOcrStateChange = onOcrStateChangeStable,
onGetOcrSearchRects = onGetOcrSearchRectsStable,
allAnnotations = allAnnotationsProvider,
drawingState = drawingState,
onDrawStart = onDrawStartStable,
onDraw = onDrawStable,
onDrawEnd = {
val finalAnnotation = drawingState.onDrawEnd()
if (finalAnnotation != null) {
val pageIdx = finalAnnotation.pageIndex
val existing =
allAnnotations[pageIdx] ?: emptyList()
allAnnotations =
allAnnotations + (pageIdx to (existing + finalAnnotation))
undoStack.add(
HistoryAction.Add(
pageIdx, finalAnnotation
)
)
redoStack.clear()
}
if (selectedTool == InkType.ERASER && erasedAnnotationsFromStroke.isNotEmpty()) {
val removalMap =
erasedAnnotationsFromStroke.mapValues {
it.value.toList()
}
undoStack.add(
HistoryAction.Remove(removalMap)
)
redoStack.clear()
erasedAnnotationsFromStroke.clear()
}
},
onOcrModelDownloading = {
isOcrModelDownloading = true
},
selectedTool = selectedTool,
richTextController = richTextController,
isEditMode = isDrawingActive,
textBoxes = textBoxes,
selectedTextBoxId = selectedTextBoxId,
onTextBoxChange = { updatedBox ->
val idx = textBoxes.indexOfFirst { it.id == updatedBox.id }
if (idx != -1) textBoxes[idx] = updatedBox
},
onTextBoxSelect = { id ->
selectedTextBoxId = id
richTextController?.clearSelection()
},
bottomContentPaddingPx = bottomScrollLimitPx,
topContentPaddingPx = topScrollLimitPx,
onTextBoxMoved = { boxId, newPageIndex, newBounds ->
val idx = textBoxes.indexOfFirst { it.id == boxId }
if (idx != -1) {
val oldBox = textBoxes[idx]
textBoxes[idx] = oldBox.copy(pageIndex = newPageIndex, relativeBounds = newBounds)
}
},
isAutoScrollPlaying = isAutoScrollPlaying,
isAutoScrollTempPaused = isAutoScrollTempPaused,
autoScrollSpeed = autoScrollSpeed * 0.5f,
onInteractionListener = onAutoScrollInteraction
)
}
}
}
}
totalPages == 0 && !isLoadingDocument -> {
Box(
modifier = Modifier
.fillMaxSize()
.padding(16.dp),
contentAlignment = Alignment.Center
) {
Text(
"PDF is empty or could not be displayed.",
modifier = Modifier.padding(16.dp)
)
}
}
}
}
// OCR language download indicator
AnimatedVisibility(
visible = isOcrModelDownloading,
enter = slideInVertically() + fadeIn(),
exit = slideOutVertically() + fadeOut(),
modifier = Modifier
.align(Alignment.TopCenter)
.fillMaxWidth()
.padding(
top = if (showBars) 56.dp else 0.dp
) // Push down if top bar is visible
.padding(8.dp)
) {
Surface(
color = MaterialTheme.colorScheme.tertiaryContainer,
shape = RoundedCornerShape(8.dp),
shadowElevation = 4.dp
) {
Row(
modifier = Modifier
.fillMaxWidth()
.padding(12.dp),
verticalAlignment = Alignment.CenterVertically,
horizontalArrangement = Arrangement.Center
) {
CircularProgressIndicator(
modifier = Modifier.size(16.dp),
strokeWidth = 2.dp,
color = MaterialTheme.colorScheme.onTertiaryContainer
)
Spacer(modifier = Modifier.width(12.dp))
Text(
text = "Downloading ${ocrLanguage.displayName.substringBefore("(")} language pack...",
style = MaterialTheme.typography.labelLarge,
color = MaterialTheme.colorScheme.onTertiaryContainer
)
}
}
}
// --- Slider UI Overlay ---
AnimatedVisibility(
visible = isPageSliderVisible,
enter = slideInVertically { fullHeight -> fullHeight } + fadeIn(),
exit = slideOutVertically { fullHeight -> fullHeight } + fadeOut()) {
Box(modifier = Modifier.fillMaxSize()) {
Box(
modifier = Modifier
.fillMaxSize()
.clickable(
interactionSource = remember {
MutableInteractionSource()
}, indication = null
) {
isPageSliderVisible = false
showBars = true
})
if (isFastScrubbing) {
PageScrubbingAnimation(
currentPage = sliderCurrentPage.roundToInt() + 1,
totalPages = totalPages
)
}
// Top back button
IconButton(
onClick = {
isPageSliderVisible = false
showBars = true
}, modifier = Modifier
.align(Alignment.TopStart)
.padding(8.dp)
) {
Icon(
imageVector = Icons.AutoMirrored.Filled.ArrowBack,
contentDescription = "Exit slider navigation"
)
}
// Bottom controls
Box(
modifier = Modifier
.fillMaxWidth()
.align(Alignment.BottomCenter)
.clickable(
indication = null, interactionSource = remember {
MutableInteractionSource()
}) {}, // Consume clicks
) {
Row(
modifier = Modifier
.fillMaxWidth()
.padding(horizontal = 32.dp, vertical = 16.dp),
verticalAlignment = Alignment.CenterVertically,
horizontalArrangement = Arrangement.spacedBy(16.dp)
) {
BoxWithConstraints(
modifier = Modifier.weight(1f),
contentAlignment = Alignment.Center
) {
Slider(
value = sliderCurrentPage,
onValueChange = { newValue ->
sliderCurrentPage = newValue
isFastScrubbing = true
scrubDebounceJob.value?.cancel()
scrubDebounceJob.value = coroutineScope.launch {
delay(200)
if (isActive) {
if (displayMode == DisplayMode.PAGINATION) {
pagerState.scrollToPage(
newValue.roundToInt()
)
} else {
verticalReaderState.scrollToPage(
newValue.roundToInt()
)
}
isFastScrubbing = false
}
}
},
valueRange = 0f..(totalPages - 1).toFloat()
.coerceAtLeast(0f),
steps = if (totalPages > 2) totalPages - 2 else 0,
modifier = Modifier.fillMaxWidth(),
thumb = {
Surface(
modifier = Modifier.size(20.dp),
shape = CircleShape,
color = MaterialTheme.colorScheme.primary,
tonalElevation = 0.dp,
shadowElevation = 0.dp
) {}
},
track = { sliderState ->
val trackHeight = 2.dp
val trackShape = RoundedCornerShape(trackHeight)
val range =
sliderState.valueRange.endInclusive - sliderState.valueRange.start
val fraction = if (range == 0f) 0f
else {
((sliderState.value - sliderState.valueRange.start) / range).coerceIn(
0f,
1f
)
}
Box(
modifier = Modifier
.fillMaxWidth()
.height(trackHeight)
.background(
color = MaterialTheme.colorScheme.surfaceVariant,
shape = trackShape
)
) {
Box(
modifier = Modifier
.fillMaxWidth(fraction)
.fillMaxHeight()
.background(
color = MaterialTheme.colorScheme.primary,
shape = trackShape
)
)
}
})
val startPageOffsetFraction = if (totalPages > 1) {
sliderStartPage.toFloat() / (totalPages - 1)
} else {
0f
}
val thumbWidth = 20.dp
val trackWidth = maxWidth - thumbWidth
val startPagePixelPosition =
(trackWidth * startPageOffsetFraction) + (thumbWidth / 2)
val indicatorSize = 8.dp
val indicatorOffset =
startPagePixelPosition - (indicatorSize / 2)
Surface(
modifier = Modifier
.align(Alignment.CenterStart)
.offset(x = indicatorOffset)
.size(indicatorSize),
shape = CircleShape,
color = MaterialTheme.colorScheme.primary
) {}
Timber.d("maxWidth: $maxWidth, trackWidth: $trackWidth")
Timber.d(
"startPage: $sliderStartPage, totalPages: $totalPages, fraction: $startPageOffsetFraction"
)
Timber.d(
"Calculated X Offset (before centering): $startPagePixelPosition"
)
startPageThumbnail?.let { thumbnail ->
ThumbnailWithIndicator(
thumbnail = thumbnail,
modifier = Modifier
.graphicsLayer { clip = false }
.align(Alignment.TopStart)
.offset(
x = startPagePixelPosition - (45.dp / 2),
y = (-72).dp
),
onClick = {
sliderCurrentPage = sliderStartPage.toFloat()
coroutineScope.launch {
if (displayMode == DisplayMode.PAGINATION) {
pagerState.scrollToPage(sliderStartPage)
} else {
verticalReaderState.scrollToPage(
sliderStartPage
)
}
}
})
}
}
// Page number text
Text(
text = "${sliderCurrentPage.roundToInt() + 1} / $totalPages",
style = MaterialTheme.typography.bodyLarge,
color = if (displayMode == DisplayMode.VERTICAL_SCROLL) Color.Black
else MaterialTheme.colorScheme.onSurface,
fontSize = 18.sp
)
}
}
}
}
val showStandardBars = showBars && !isEditMode
// Custom Top Bar
AnimatedVisibility(
visible = showStandardBars,
enter = slideInVertically { fullHeight -> -fullHeight } + fadeIn(),
exit = slideOutVertically { fullHeight -> -fullHeight } + fadeOut(),
modifier = Modifier.align(Alignment.TopCenter)) {
Surface(
modifier = Modifier
.fillMaxWidth()
.height(56.dp),
color = MaterialTheme.colorScheme.surface,
tonalElevation = 4.dp
) {
Row(
modifier = Modifier
.fillMaxSize()
.padding(horizontal = 4.dp),
verticalAlignment = Alignment.CenterVertically
) {
if (searchState.isSearchActive) {
SearchTopBar(
searchState = searchState,
focusRequester = focusRequester,
onCloseSearch = {
searchState.isSearchActive = false
searchState.onQueryChange("")
keyboardController?.hide()
focusManager.clearFocus()
})
} else {
IconButton(onClick = { saveStateAndExit() }) {
Icon(
imageVector = Icons.AutoMirrored.Filled.ArrowBack,
contentDescription = "Back"
)
}
val currentPageForDisplay =
if (displayMode == DisplayMode.PAGINATION) {
pagerState.currentPage
} else {
verticalReaderState.currentPage
}
val titleText = when {
isLoadingDocument -> "Loading PDF..."
errorMessage != null -> "Error loading PDF"
totalPages > 0 && pagerState.pageCount > 0 -> "Page ${currentPageForDisplay + 1} of $totalPages"
totalPages > 0 && pagerState.pageCount == 0 -> "Loading page..."
else -> "PDF Viewer"
}
Text(
text = titleText,
style = MaterialTheme.typography.titleMedium,
maxLines = 1,
overflow = TextOverflow.Ellipsis,
modifier = Modifier
.padding(start = 12.dp)
.weight(1f)
.testTag("PageNumberIndicator")
)
IconButton(onClick = { isPdfDarkMode = !isPdfDarkMode }) {
Icon(
painter = painterResource(id = R.drawable.dark_mode),
contentDescription = if (isPdfDarkMode) "Disable Dark Mode"
else "Enable Dark Mode",
tint = if (isPdfDarkMode) MaterialTheme.colorScheme.primary
else MaterialTheme.colorScheme.onSurfaceVariant
)
}
IconButton(onClick = { isScrollLocked = !isScrollLocked }) {
Icon(
imageVector = if (isScrollLocked) Icons.Default.Lock else Icons.Default.LockOpen,
contentDescription = if (isScrollLocked) "Unlock Panning" else "Lock Panning",
tint = MaterialTheme.colorScheme.onSurfaceVariant
)
}
IconButton(onClick = { isFullScreen = true }) {
Icon(
imageVector = Icons.Default.Fullscreen,
contentDescription = "Enter Full Screen",
tint = MaterialTheme.colorScheme.onSurfaceVariant
)
}
if (BuildConfig.DEBUG) {
IconButton(onClick = { showPenPlayground = true }) {
Icon(
imageVector = Icons.Default.Star,
contentDescription = "Open Pen Playground",
tint = MaterialTheme.colorScheme.primary
)
}
IconButton(onClick = {
val page = if (displayMode == DisplayMode.PAGINATION) pagerState.currentPage else verticalReaderState.currentPage
coroutineScope.launch(Dispatchers.IO) {
val svgAnnotations = SvgToAnnotationConverter.importSvgFromAssets(
context = context,
fileName = "demo_art.svg",
pageIndex = page
)
withContext(Dispatchers.Main) {
if (svgAnnotations.isNotEmpty()) {
val existing = allAnnotations[page] ?: emptyList()
allAnnotations = allAnnotations + (page to (existing + svgAnnotations))
svgAnnotations.forEach { annot ->
undoStack.add(HistoryAction.Add(page, annot))
}
redoStack.clear()
snackbarHostState.showSnackbar("Imported ${svgAnnotations.size} SVG strokes!")
} else {
snackbarHostState.showSnackbar("Failed to import SVG or empty.")
}
}
}
}) {
Icon(
imageVector = Icons.Default.Brush,
contentDescription = "Import SVG",
tint = Color(0xFFE91E63)
)
}
}
Box {
var showMoreMenu by remember { mutableStateOf(false) }
IconButton(onClick = { showMoreMenu = true }) {
Icon(
imageVector = Icons.Default.MoreVert,
contentDescription = "More Options"
)
}
// Main "More" menu
DropdownMenu(
expanded = showMoreMenu,
onDismissRequest = { showMoreMenu = false }) {
if (BuildConfig.IS_PRO) {
DropdownMenuItem(
text = { Text("OCR Language") },
onClick = {
showMoreMenu = false
hasSelectedOcrLanguage = true
showOcrLanguageDialog = true
}
)
HorizontalDivider()
}
DropdownMenuItem(
text = { Text("Reading Mode: Vertical scroll") },
enabled = !isTtsSessionActive,
onClick = {
displayMode = DisplayMode.VERTICAL_SCROLL
showMoreMenu = false
},
trailingIcon = {
if (displayMode == DisplayMode.VERTICAL_SCROLL) {
Icon(
imageVector = Icons.Filled.Check,
contentDescription = "Selected"
)
}
})
HorizontalDivider()
DropdownMenuItem(
text = { Text("Reading Mode: Paginated") },
enabled = !isTtsSessionActive,
onClick = {
displayMode = DisplayMode.PAGINATION
showMoreMenu = false
},
trailingIcon = {
if (displayMode == DisplayMode.PAGINATION) {
Icon(
imageVector = Icons.Filled.Check,
contentDescription = "Selected"
)
}
})
HorizontalDivider()
DropdownMenuItem(
text = { Text("Auto Scroll") },
enabled = !isTtsSessionActive && displayMode == DisplayMode.VERTICAL_SCROLL,
onClick = {
showMoreMenu = false
isAutoScrollModeActive = true
isAutoScrollPlaying = true
showBars = true
}
)
HorizontalDivider()
DropdownMenuItem(text = {
Text(
if (isBookmarked) "Remove bookmark"
else "Bookmark this page"
)
}, onClick = {
showMoreMenu = false
onBookmarkClick()
})
HorizontalDivider()
DropdownMenuItem(
text = { Text("Insert Blank Page") },
onClick = {
showMoreMenu = false
onInsertPage()
})
val canDelete =
virtualPages.getOrNull(currentPage) is VirtualPage.BlankPage
if (canDelete) {
DropdownMenuItem(
text = { Text("Delete Page") },
onClick = {
showMoreMenu = false
onDeletePage()
},
colors = MenuDefaults.itemColors(
textColor = MaterialTheme.colorScheme.error
)
)
}
HorizontalDivider()
DropdownMenuItem(text = { Text("Share") }, onClick = {
showMoreMenu = false
showShareDialog = true
}, leadingIcon = {
Icon(
Icons.Default.Share, contentDescription = null
)
})
DropdownMenuItem(
text = { Text("Save copy to device") },
onClick = {
showMoreMenu = false
showSaveDialog = true
},
leadingIcon = {
Icon(
Icons.Default.Save, contentDescription = null
)
})
}
}
}
}
}
}
// Search Results Panel
AnimatedVisibility(
visible = searchState.isSearchActive && searchState.showSearchResultsPanel,
) {
Column(
modifier = Modifier
.fillMaxSize()
.padding(top = 56.dp)
.background(MaterialTheme.colorScheme.surface)
) {
if (isBackgroundIndexing) {
Surface(
color = MaterialTheme.colorScheme.secondaryContainer,
modifier = Modifier.fillMaxWidth()
) {
Row(
modifier = Modifier.padding(
horizontal = 16.dp, vertical = 8.dp
), verticalAlignment = Alignment.CenterVertically
) {
CircularProgressIndicator(
modifier = Modifier.size(12.dp),
strokeWidth = 2.dp,
color = MaterialTheme.colorScheme.onSecondaryContainer
)
Spacer(modifier = Modifier.width(8.dp))
Text(
text = "Indexing pages... ${(backgroundIndexingProgress * 100).toInt()}% done. Search results will update automatically.",
style = MaterialTheme.typography.bodySmall,
color = MaterialTheme.colorScheme.onSecondaryContainer
)
}
}
}
if (!(searchState.isSearchInProgress && isOcrScanning)) {
// NEW PANEL LOGIC
val resultState = smartSearchResult
if (resultState is SmartSearchResult.Exact) {
PdfSearchResultsList(
results = resultState.matches, onResultClick = { result ->
navigateToPdfSearchResult(result)
searchState.showSearchResultsPanel = false
keyboardController?.hide()
}, modifier = Modifier.fillMaxSize()
)
} else if (resultState is SmartSearchResult.Paged) {
val lazyPagingItems =
resultState.pagingData.collectAsLazyPagingItems()
PdfSearchResultsPanel(
lazyResults = lazyPagingItems,
totalPageCount = resultState.totalPageCount,
onResultClick = { result ->
navigateToPdfSearchResult(result)
searchState.showSearchResultsPanel = false
keyboardController?.hide()
},
modifier = Modifier.fillMaxSize()
)
}
}
}
}
// Search Navigation Controls
AnimatedVisibility(
visible = searchState.isSearchActive && !searchState.showSearchResultsPanel && smartSearchResult != null,
enter = slideInVertically { it } + fadeIn(),
exit = slideOutVertically { it } + fadeOut(),
modifier = Modifier
.align(Alignment.BottomCenter)
.padding(bottom = 24.dp)) {
val currentResult = currentPdfSearchResult
val searchData = smartSearchResult
val (displayText, isPrevEnabled, isNextEnabled) = remember(
currentResult,
searchData
) {
when (searchData) {
is SmartSearchResult.Exact -> {
val index = if (currentResult != null) searchData.matches.indexOf(
currentResult
)
else -1
val text =
if (index >= 0) "Result ${index + 1} / ${searchData.matches.size}"
else "${searchData.matches.size} Results"
Triple(text, index > 0, index < searchData.matches.size - 1)
}
is SmartSearchResult.Paged -> {
val page = currentResult?.locationInSource
val text = if (page != null) "Page ${page + 1}"
else "${searchData.totalPageCount}+ Pages"
Triple(text, true, true)
}
else -> Triple("", false, false)
}
}
SearchNavigationPill(
text = displayText,
mode = searchHighlightMode,
onToggleMode = {
searchHighlightMode =
if (searchHighlightMode == SearchHighlightMode.ALL) SearchHighlightMode.FOCUSED
else SearchHighlightMode.ALL
},
onPrev = {
coroutineScope.launch {
when (searchData) {
is SmartSearchResult.Exact -> {
val index =
if (currentResult != null) searchData.matches.indexOf(
currentResult
)
else -1
if (index > 0) {
navigateToPdfSearchResult(
searchData.matches[index - 1]
)
}
}
is SmartSearchResult.Paged -> {
val prev = pdfTextRepository.getPrevResult(
currentBookId!!,
searchState.searchQuery,
currentPdfSearchResult
)
if (prev != null) navigateToPdfSearchResult(prev)
}
else -> {}
}
}
},
onNext = {
coroutineScope.launch {
when (searchData) {
is SmartSearchResult.Exact -> {
val index =
if (currentResult != null) searchData.matches.indexOf(
currentResult
)
else -1
if (index >= 0 && index < searchData.matches.size - 1) {
navigateToPdfSearchResult(
searchData.matches[index + 1]
)
} else if (index == -1 && searchData.matches.isNotEmpty()) {
navigateToPdfSearchResult(searchData.matches[0])
}
}
is SmartSearchResult.Paged -> {
val next = pdfTextRepository.getNextResult(
currentBookId!!,
searchState.searchQuery,
currentPdfSearchResult
)
if (next != null) navigateToPdfSearchResult(next)
}
else -> {}
}
}
},
onTextClick = { searchState.showSearchResultsPanel = true },
isPrevEnabled = isPrevEnabled,
isNextEnabled = isNextEnabled
)
}
// Bottom Bar
AnimatedVisibility(
visible = showStandardBars && !searchState.isSearchActive,
enter = slideInVertically { fullHeight -> fullHeight } + fadeIn(),
exit = slideOutVertically { fullHeight -> fullHeight } + fadeOut(),
modifier = Modifier.align(Alignment.BottomCenter)) {
Surface(
modifier = Modifier
.fillMaxWidth()
.height(56.dp),
color = MaterialTheme.colorScheme.surface,
tonalElevation = 4.dp
) {
Row(
modifier = Modifier
.fillMaxSize()
.padding(horizontal = 8.dp),
verticalAlignment = Alignment.CenterVertically,
horizontalArrangement = Arrangement.SpaceAround
) {
// Slider Navigation Trigger
IconButton(
onClick = {
val currentPage = if (displayMode == DisplayMode.PAGINATION) {
pagerState.currentPage
} else {
verticalReaderState.currentPage
}
sliderStartPage = currentPage
sliderCurrentPage = currentPage.toFloat()
isPageSliderVisible = true
showBars = false
}, enabled = !(ttsState.isPlaying || ttsState.isLoading)
) {
Icon(
painter = painterResource(id = R.drawable.slider),
contentDescription = "Navigate with slider"
)
}
IconButton(
onClick = { coroutineScope.launch { drawerState.open() } },
enabled = !(ttsState.isPlaying || ttsState.isLoading),
modifier = Modifier.testTag("TocButton")
) {
Icon(
imageVector = Icons.Default.Menu,
contentDescription = "Table of Contents"
)
}
// Search Button
IconButton(
onClick = {
executeWithOcrCheck {
searchState.isSearchActive = true
showBars = true
}
},
enabled = !(ttsState.isPlaying || ttsState.isLoading),
modifier = Modifier.testTag("SearchButton")
) {
Icon(
imageVector = Icons.Default.Search,
contentDescription = "Search"
)
}
IconButton(
onClick = {
val newState = !showAllTextHighlights
if (newState) {
if (isHighlightingLoading) return@IconButton
showAllTextHighlights = true
isHighlightingLoading = true
} else {
showAllTextHighlights = false
isHighlightingLoading = false
}
}) {
if (isHighlightingLoading) {
CircularProgressIndicator(Modifier.size(24.dp))
} else {
Icon(
painter = painterResource(id = R.drawable.highlight_text),
contentDescription = "Highlight all text",
tint = if (showAllTextHighlights) MaterialTheme.colorScheme.primary
else MaterialTheme.colorScheme.onSurfaceVariant
)
}
}
// AI feat
Box {
var showAiFeaturesMenu by remember { mutableStateOf(false) }
IconButton(onClick = { showAiFeaturesMenu = true }) {
Icon(
painter = painterResource(id = R.drawable.ai),
contentDescription = "AI Features"
)
}
DropdownMenu(
expanded = showAiFeaturesMenu,
onDismissRequest = { showAiFeaturesMenu = false }) {
DropdownMenuItem(
text = {
Text("Summarize Page (Page ${currentPage + 1})")
}, onClick = {
showAiFeaturesMenu = false
if (isProUser) {
showSummarizationPopup = true
coroutineScope.launch {
isSummarizationLoading = true
summarizationResult = null
summarizeCurrentPage(onUpdate = { result ->
summarizationResult = result
}, onFinish = {
isSummarizationLoading = false
})
}
} else {
showSummarizationUpsellDialog = true
}
}, enabled = !isSummarizationLoading && pdfDocument != null
)
}
}
// Edit Button
IconButton(
onClick = {
val newEditMode = !isEditMode
val currentActivePage = richTextController?.activePageIndex ?: -1
Timber.tag("RichTextMigration").i("Edit Toggle: $isEditMode -> $newEditMode (ActivePage: $currentActivePage)")
if (!newEditMode && richTextController != null) {
coroutineScope.launch {
richTextController.saveImmediate()
withContext(Dispatchers.Main) {
keyboardController?.hide()
}
}
}
isEditMode = newEditMode
if (!newEditMode) showBars = true
}
) {
Icon(
imageVector = Icons.Default.Edit,
contentDescription = "Toggle Editing Mode",
tint = if (isEditMode) MaterialTheme.colorScheme.primary else MaterialTheme.colorScheme.onSurfaceVariant
)
}
// TTS
IconButton(
onClick = {
if (isTtsSessionActive) {
Timber.d("TTS button clicked: Stopping TTS")
ttsController.stop()
} else {
executeWithOcrCheck {
when {
ContextCompat.checkSelfPermission(
context, Manifest.permission.POST_NOTIFICATIONS
) == PackageManager.PERMISSION_GRANTED -> {
startTts()
}
activity?.shouldShowRequestPermissionRationale(
Manifest.permission.POST_NOTIFICATIONS
) == true -> {
showPermissionRationaleDialog = true
}
else -> {
permissionLauncher.launch(
Manifest.permission.POST_NOTIFICATIONS
)
}
}
}
}
}) {
Icon(
painter = if (isTtsSessionActive) painterResource(id = R.drawable.close)
else painterResource(
id = R.drawable.text_to_speech
),
contentDescription = if (isTtsSessionActive) "Stop TTS" else "Start TTS"
)
}
// TTS Pause/Resume Button
if (isTtsSessionActive) {
IconButton(
onClick = {
if (ttsState.isPlaying) {
ttsController.pause()
} else {
ttsController.resume()
}
}, enabled = !ttsState.isLoading
) {
Icon(
painter = painterResource(
id = if (ttsState.isPlaying) R.drawable.pause
else R.drawable.play
), contentDescription = if (ttsState.isPlaying) "Pause TTS"
else "Resume TTS"
)
}
} else {
Spacer(Modifier.size(48.dp))
}
// Error Message Area
ttsState.errorMessage?.let {
Text(
it,
color = MaterialTheme.colorScheme.error,
style = MaterialTheme.typography.bodySmall,
modifier = Modifier
.weight(1f)
.padding(start = 8.dp),
maxLines = 2,
overflow = TextOverflow.Ellipsis
)
}
}
}
}
// Full Screen Exit Button
AnimatedVisibility(
visible = isFullScreen,
enter = fadeIn(),
exit = fadeOut(),
modifier = Modifier
.align(Alignment.BottomEnd)
.padding(24.dp)
) {
val isBackgroundDark = displayMode == DisplayMode.PAGINATION || isPdfDarkMode
val fabContainerColor = if (isBackgroundDark) Color.White.copy(alpha = 0.25f)
else Color.Black.copy(alpha = 0.25f)
val fabContentColor = if (isBackgroundDark) Color.White else Color.Black
Surface(
onClick = { isFullScreen = false },
color = fabContainerColor,
contentColor = fabContentColor,
shape = CircleShape,
tonalElevation = 0.dp,
shadowElevation = 0.dp
) {
Box(modifier = Modifier.size(48.dp), contentAlignment = Alignment.Center) {
Icon(
imageVector = Icons.Default.FullscreenExit,
contentDescription = "Exit Full Screen",
modifier = Modifier.size(26.dp)
)
}
}
}
if (isEditMode) {
val density = LocalDensity.current
val popupPlacementConfig =
remember(dockLocation, dockOffset, boxMaxHeightFloat, dockHeightPx) {
val margin = 16.dp
with(density) { boxMaxHeightFloat.toDp() }
val dockTopY = when (dockLocation) {
DockLocation.TOP -> 0f
DockLocation.BOTTOM -> boxMaxHeightFloat - dockHeightPx
DockLocation.FLOATING -> dockOffset.y
}
val dockBottomY = dockTopY + dockHeightPx
val dockCenterY = dockTopY + (dockHeightPx / 2f)
val isDockInBottomHalf = dockCenterY > (boxMaxHeightFloat / 2f)
if (isDockInBottomHalf) {
val distFromBottom = boxMaxHeightFloat - dockTopY
val paddingBottom = with(density) { distFromBottom.toDp() } + margin
Triple(Alignment.BottomCenter, 0.dp, paddingBottom)
} else {
val paddingTop = with(density) { dockBottomY.toDp() } + margin
Triple(Alignment.TopCenter, paddingTop, 0.dp)
}
}
val (popupAlign, popupTopPad, popupBottomPad) = popupPlacementConfig
Box(modifier = Modifier.fillMaxSize()) {
AnimatedVisibility(
visible = showToolSettings,
enter = fadeIn(),
exit = fadeOut(),
modifier = Modifier
.align(popupAlign)
.padding(top = popupTopPad, bottom = popupBottomPad)
.testTag("ToolSettingsPopup")
) {
val currentPalette =
if (isCurrentToolHighlighter) highlighterPalette else penPalette
ToolSettingsPopup(
selectedTool = selectedTool,
activeToolThickness = activeToolThickness,
fountainPenColor = fountainPenColor,
markerColor = markerColor,
pencilColor = pencilColor,
highlighterColor = highlighterColor,
highlighterRoundColor = highlighterRoundColor,
activePalette = currentPalette,
onToolTypeChanged = { newType ->
annotationSettingsRepo.updateSelectedTool(newType)
},
onColorChanged = { color ->
annotationSettingsRepo.updateToolColor(selectedTool, color)
},
onThicknessChanged = { thickness ->
annotationSettingsRepo.updateToolThickness(
selectedTool, thickness
)
},
onPaletteChange = { newPalette ->
if (isCurrentToolHighlighter) {
annotationSettingsRepo.updateHighlighterPalette(
newPalette
)
} else {
annotationSettingsRepo.updatePenPalette(newPalette)
}
})
}
snapPreviewLocation?.let { location ->
Box(
modifier = Modifier
.fillMaxWidth()
.height(dockHeight)
.align(
if (location == DockLocation.TOP) Alignment.TopCenter
else Alignment.BottomCenter
)
.background(Color.Black)
)
}
Box(
modifier = Modifier
.fillMaxSize()
.then(
when {
isDockDragging -> Modifier // Positioned manually
// via offset during
// drag
dockLocation == DockLocation.TOP -> Modifier // Aligned via Box
// Scope
dockLocation == DockLocation.BOTTOM -> Modifier // Aligned via Box
// Scope
else -> Modifier // Positioned manually
// via offset
}
)
) {
// Calculate drag offset to apply if floating/dragging
val dragModifier =
if (isDockDragging || dockLocation == DockLocation.FLOATING) {
Modifier.offset {
IntOffset(
dockOffset.x.roundToInt(), dockOffset.y.roundToInt()
)
}
} else {
Modifier // Sticky positions use alignment below
}
// Calculate Alignment for Sticky states
val alignModifier = when {
isDockDragging || dockLocation == DockLocation.FLOATING -> Modifier
dockLocation == DockLocation.TOP -> Modifier.align(Alignment.TopCenter)
dockLocation == DockLocation.BOTTOM -> Modifier.align(Alignment.BottomCenter)
else -> Modifier
}
val widthModifier =
if ((dockLocation == DockLocation.TOP || dockLocation == DockLocation.BOTTOM) && !isDockDragging) {
Modifier.fillMaxWidth()
} else {
Modifier.padding(
horizontal = 16.dp
) // Original padding for floating capsule
}
val paddingModifier =
if ((dockLocation == DockLocation.TOP || dockLocation == DockLocation.BOTTOM) && !isDockDragging) {
Modifier
} else {
Modifier.padding(vertical = 16.dp)
}
val isSticky =
(dockLocation == DockLocation.TOP || dockLocation == DockLocation.BOTTOM) && !isDockDragging
Box(
modifier = Modifier
.then(alignModifier)
.then(dragModifier)
.pointerInput(dockLocation, isDockMinimized) {
val onDragStart: (Offset) -> Unit = {
isDockDragging = true
val startX = (boxMaxWidthFloat / 2) - (size.width / 2)
if (dockLocation == DockLocation.BOTTOM) {
dockOffset = Offset(
startX, boxMaxHeightFloat - dockHeightPx - 50f
)
} else if (dockLocation == DockLocation.TOP) {
dockOffset = Offset(startX, 50f)
}
}
val onDrag: (
PointerInputChange, Offset
) -> Unit = { change, dragAmount ->
change.consume()
dockOffset += dragAmount
val topSnapThreshold = 150f
val bottomSnapThreshold = boxMaxHeightFloat - 250f
snapPreviewLocation = when {
dockOffset.y < topSnapThreshold -> DockLocation.TOP
dockOffset.y > bottomSnapThreshold -> DockLocation.BOTTOM
else -> null
}
}
val onDragEnd: () -> Unit = {
isDockDragging = false
if (snapPreviewLocation != null) {
dockLocation = snapPreviewLocation!!
snapPreviewLocation = null
} else {
dockLocation = DockLocation.FLOATING
val safeX = dockOffset.x.coerceIn(
0f, boxMaxWidthFloat - 100f
)
val safeY = dockOffset.y.coerceIn(
0f, boxMaxHeightFloat - dockHeightPx
)
dockOffset = Offset(safeX, safeY)
}
saveDockState(
context, dockLocation, dockOffset
)
}
val onDragCancel: () -> Unit = {
isDockDragging = false
snapPreviewLocation = null
}
if (dockLocation == DockLocation.FLOATING) {
detectDragGestures(
onDragStart = onDragStart,
onDrag = onDrag,
onDragEnd = onDragEnd,
onDragCancel = onDragCancel
)
} else {
detectDragGesturesAfterLongPress(
onDragStart = onDragStart,
onDrag = onDrag,
onDragEnd = onDragEnd,
onDragCancel = onDragCancel
)
}
}) {
AnnotationDock(
selectedTool = selectedTool,
activePenColor = dockPenColor,
activeHighlighterColor = dockHighlighterColor,
lastPenTool = lastPenTool,
onToolClick = { clickedTool ->
if (clickedTool == InkType.ERASER) {
annotationSettingsRepo.updateSelectedTool(
clickedTool
)
showToolSettings = false
} else if (selectedTool == clickedTool) {
if (clickedTool == InkType.PEN || clickedTool == InkType.FOUNTAIN_PEN || clickedTool == InkType.PENCIL || clickedTool == InkType.HIGHLIGHTER || clickedTool == InkType.HIGHLIGHTER_ROUND) {
showToolSettings = !showToolSettings
}
} else {
if (showToolSettings) {
coroutineScope.launch {
showToolSettings = false
delay(250)
annotationSettingsRepo.updateSelectedTool(
clickedTool
)
showToolSettings = true
}
} else {
annotationSettingsRepo.updateSelectedTool(
clickedTool
)
}
}
},
onUndo = {
if (undoStack.isNotEmpty()) {
val action = undoStack.removeAt(undoStack.lastIndex)
when (action) {
is HistoryAction.Add -> {
val pageIndex = action.pageIndex
val annotation = action.annotation
val pageAnnotations =
allAnnotations[pageIndex] ?: emptyList()
val newForPage = pageAnnotations - annotation
allAnnotations =
allAnnotations + (pageIndex to newForPage)
redoStack.add(action)
}
is HistoryAction.Remove -> {
var currentAllAnnotations = allAnnotations
action.items.forEach { (pageIndex, annotations) ->
val pageList =
currentAllAnnotations[pageIndex]
?: emptyList()
currentAllAnnotations =
currentAllAnnotations + (pageIndex to (pageList + annotations))
}
allAnnotations = currentAllAnnotations
redoStack.add(action)
}
}
}
},
onRedo = {
if (redoStack.isNotEmpty()) {
val action = redoStack.removeAt(redoStack.lastIndex)
when (action) {
is HistoryAction.Add -> {
val pageIndex = action.pageIndex
val annotation = action.annotation
val pageAnnotations =
allAnnotations[pageIndex] ?: emptyList()
val newForPage = pageAnnotations + annotation
allAnnotations =
allAnnotations + (pageIndex to newForPage)
undoStack.add(action)
}
is HistoryAction.Remove -> {
var currentAllAnnotations = allAnnotations
action.items.forEach { (pageIndex, annotations) ->
val pageList =
currentAllAnnotations[pageIndex]
?: emptyList()
val newForPage =
pageList - annotations.toSet()
currentAllAnnotations =
currentAllAnnotations + (pageIndex to newForPage)
}
allAnnotations = currentAllAnnotations
undoStack.add(action)
}
}
}
},
onClose = {
richTextController?.clearSelection()
isEditMode = false
isDockMinimized = false
showBars = true
},
canUndo = undoStack.isNotEmpty(),
canRedo = redoStack.isNotEmpty(),
isSticky = isSticky,
modifier = Modifier
.then(widthModifier)
.then(paddingModifier),
isMinimized = isDockMinimized,
onToggleMinimize = { isDockMinimized = !isDockMinimized })
}
}
}
}
val ttsReadingPage = ttsPageData?.pageIndex
val isTtsPageVisible by remember(
ttsReadingPage,
displayMode,
verticalReaderState.firstVisiblePage,
verticalReaderState.lastVisiblePage
) {
derivedStateOf {
if (displayMode != DisplayMode.VERTICAL_SCROLL || ttsReadingPage == null) {
true
} else {
ttsReadingPage in verticalReaderState.firstVisiblePage..verticalReaderState.lastVisiblePage
}
}
}
val showScrollToTtsFab by remember(
displayMode,
isTtsSessionActive,
isTtsPageVisible
) {
derivedStateOf {
displayMode == DisplayMode.VERTICAL_SCROLL && isTtsSessionActive && !isTtsPageVisible
}
}
AnimatedVisibility(
visible = showScrollToTtsFab,
modifier = Modifier
.align(Alignment.BottomCenter)
.padding(bottom = if (showBars) 56.dp + 16.dp else 16.dp),
enter = fadeIn(),
exit = fadeOut()
) {
val isTtsPageBelow = (ttsReadingPage ?: 0) > verticalReaderState.currentPage
FloatingActionButton(
onClick = {
ttsReadingPage?.let {
coroutineScope.launch { verticalReaderState.scrollToPage(it) }
}
},
shape = CircleShape,
containerColor = Color.Black.copy(alpha = 0.7f),
contentColor = Color.White,
elevation = FloatingActionButtonDefaults.elevation(0.dp, 0.dp, 0.dp, 0.dp)
) {
Icon(
imageVector = if (isTtsPageBelow) Icons.Default.ArrowDownward
else Icons.Default.ArrowUpward,
contentDescription = "Scroll to reading page"
)
}
}
AnimatedVisibility(
visible = showZoomIndicator,
modifier = Modifier
.align(Alignment.TopEnd)
.padding(top = 88.dp, end = 16.dp),
enter = fadeIn(),
exit = fadeOut()
) {
val percentage = (currentPageScale * 100).roundToInt()
ZoomPercentageIndicator(percentage = percentage)
}
val isImeVisible = WindowInsets.ime.getBottom(LocalDensity.current) > 0
var isTextAnnotationPopupVisible by remember { mutableStateOf(false) }
val showTextDock = isEditMode && selectedTool == InkType.TEXT && (isImeVisible || isTextAnnotationPopupVisible || selectedTextBoxId != null)
if (showTextDock && richTextController != null) {
val bottomPadding = if (dockLocation == DockLocation.BOTTOM && !isDockMinimized) {
80.dp
} else {
16.dp
}
val currentDensity = LocalDensity.current
val effectiveStyle by remember(selectedTextBoxId, textBoxes, richTextController.currentStyle, displayPageRatios, boxMaxWidthFloat) {
derivedStateOf {
if (selectedTextBoxId != null) {
val box = textBoxes.find { it.id == selectedTextBoxId }
if (box != null) {
val pageRatio = displayPageRatios.getOrElse(box.pageIndex) { 1f }
val estimatedPageHeightPx = if (pageRatio > 0) boxMaxWidthFloat / pageRatio else boxMaxWidthFloat
val fontSizePx = box.fontSize * estimatedPageHeightPx
val fontSizeSp = with(currentDensity) { fontSizePx.toSp() }
SpanStyle(
color = box.color,
background = box.backgroundColor,
fontSize = fontSizeSp,
fontWeight = if (box.isBold) FontWeight.Bold else FontWeight.Normal,
fontStyle = if (box.isItalic) FontStyle.Italic else FontStyle.Normal,
textDecoration = run {
val decs = mutableListOf()
if (box.isUnderline) decs.add(TextDecoration.Underline)
if (box.isStrikeThrough) decs.add(TextDecoration.LineThrough)
if (decs.isEmpty()) TextDecoration.None else TextDecoration.combine(decs)
}
)
} else richTextController.currentStyle
} else {
richTextController.currentStyle
}
}
}
Box(modifier = Modifier
.align(Alignment.BottomCenter)
.fillMaxWidth()) {
TextAnnotationDock(
currentStyle = effectiveStyle,
textColorPalette = penPalette,
onTextColorPaletteChange = { newPalette ->
annotationSettingsRepo.updatePenPalette(newPalette)
},
backgroundColorPalette = highlighterPalette,
onBackgroundColorPaletteChange = { newPalette ->
annotationSettingsRepo.updateHighlighterPalette(newPalette)
},
onUpdateStyle = { newStyle ->
if (selectedTextBoxId != null) {
val idx = textBoxes.indexOfFirst { it.id == selectedTextBoxId }
if (idx != -1) {
val old = textBoxes[idx]
val pageRatio = displayPageRatios.getOrElse(old.pageIndex) { 1f }
val estimatedPageHeightPx = if (pageRatio > 0) boxMaxWidthFloat / pageRatio else boxMaxWidthFloat
val newFontSizePx = with(currentDensity) { newStyle.fontSize.toPx() }
val newFontSizeNorm = if (estimatedPageHeightPx > 0) newFontSizePx / estimatedPageHeightPx else old.fontSize
textBoxes[idx] = old.copy(
color = newStyle.color,
backgroundColor = newStyle.background,
fontSize = newFontSizeNorm,
isBold = newStyle.fontWeight == FontWeight.Bold,
isItalic = newStyle.fontStyle == FontStyle.Italic,
isUnderline = newStyle.textDecoration?.contains(TextDecoration.Underline) == true,
isStrikeThrough = newStyle.textDecoration?.contains(TextDecoration.LineThrough) == true
)
}
} else {
richTextController.updateCurrentStyle(newStyle)
val newConfig = TextStyleConfig(
colorArgb = newStyle.color.toArgb(),
backgroundColorArgb = newStyle.background.toArgb(),
fontSize = newStyle.fontSize.value,
isBold = newStyle.fontWeight == FontWeight.Bold,
isItalic = newStyle.fontStyle == FontStyle.Italic,
isUnderline = newStyle.textDecoration?.contains(TextDecoration.Underline) == true,
isStrikeThrough = newStyle.textDecoration?.contains(TextDecoration.LineThrough) == true,
fontPath = toolSettings.textStyle.fontPath,
fontName = toolSettings.textStyle.fontName
)
annotationSettingsRepo.updateTextStyle(newConfig)
}
},
onApplyToSelection = {},
onClose = { keyboardController?.hide() },
onPopupStateChange = { isVisible ->
isTextAnnotationPopupVisible = isVisible
richTextController.showCursorOverride = !isVisible
},
onInsertTextBox = onInsertTextBox,
onClearTextBoxSelection = {
selectedTextBoxId = null
richTextController.clearSelection()
},
bottomDockPadding = bottomPadding,
customFonts = customFonts,
onImportFont = viewModel::importFont,
onFontSelected = { name, path ->
Timber.tag("PdfFontDebug").i("UI Action: Font Selected -> Name: $name, Path: $path")
if (selectedTextBoxId != null) {
val idx = textBoxes.indexOfFirst { it.id == selectedTextBoxId }
if (idx != -1) {
val oldBox = textBoxes[idx]
textBoxes[idx] = oldBox.copy(fontPath = path, fontName = name)
Timber.tag("PdfTextBoxDebug").d("Updated TextBox ${oldBox.id} font to: $name ($path)")
}
Timber.tag("PdfFontDebug").d("UI: Updating TextBox $selectedTextBoxId with font path: $path")
} else {
val currentConfig = toolSettings.textStyle
val newConfig = currentConfig.copy(fontPath = path, fontName = name)
annotationSettingsRepo.updateTextStyle(newConfig)
richTextController.let { controller ->
val style = SpanStyle(
color = Color(newConfig.colorArgb),
background = Color(newConfig.backgroundColorArgb),
fontSize = newConfig.fontSize.sp,
fontWeight = if (newConfig.isBold) FontWeight.Bold else FontWeight.Normal,
fontStyle = if (newConfig.isItalic) FontStyle.Italic else FontStyle.Normal,
textDecoration = run {
val decs = mutableListOf()
if (newConfig.isUnderline) decs.add(TextDecoration.Underline)
if (newConfig.isStrikeThrough) decs.add(TextDecoration.LineThrough)
if (decs.isEmpty()) TextDecoration.None else TextDecoration.combine(decs)
},
fontFamily = PdfFontCache.getFontFamily(path)
)
Timber.tag("PdfFontDebug").d("UI Action: Manually updating controller with font $path")
controller.updateCurrentStyle(style, path, name)
}
}
},
currentFontName = remember(selectedTextBoxId, textBoxes, toolSettings.textStyle) {
if (selectedTextBoxId != null) {
val box = textBoxes.find { it.id == selectedTextBoxId }
box?.fontName ?: box?.fontPath?.let { File(it).nameWithoutExtension }
} else {
toolSettings.textStyle.fontName ?: toolSettings.textStyle.fontPath?.let { File(it).nameWithoutExtension }
}
},
)
}
}
if (showSummarizationPopup) {
SummarizationPopup(
title = "Page Summary",
result = summarizationResult,
isLoading = isSummarizationLoading,
onDismiss = { showSummarizationPopup = false },
isMainTtsActive = isTtsSessionActive
)
}
if (showPermissionRationaleDialog) {
AlertDialog(
onDismissRequest = { showPermissionRationaleDialog = false },
title = { Text("Permission Required") },
text = {
Text(
"To show playback controls while the app is in the background, please grant the notification permission."
)
},
confirmButton = {
TextButton(
onClick = {
showPermissionRationaleDialog = false
permissionLauncher.launch(
Manifest.permission.POST_NOTIFICATIONS
)
}) { Text("Continue") }
},
dismissButton = {
TextButton(
onClick = {
showPermissionRationaleDialog = false
startTts()
}) { Text("Not now") }
})
}
if (showSummarizationUpsellDialog) {
AlertDialog(
onDismissRequest = { showSummarizationUpsellDialog = false },
icon = {
Icon(
painter = painterResource(id = R.drawable.summarize),
contentDescription = null
)
},
title = { Text("Unlock Page Summarization") },
text = {
Text(
"Get concise summaries of any page with Episteme Pro. Upgrade to start using this feature."
)
},
confirmButton = {
TextButton(
onClick = {
showSummarizationUpsellDialog = false
onNavigateToPro()
}) { Text("Learn More") }
},
dismissButton = {
TextButton(onClick = { showSummarizationUpsellDialog = false }) {
Text("Not Now")
}
})
}
if (showPasswordDialog) {
PasswordDialog(
isError = isPasswordError,
onDismiss = { onNavigateBack() },
onConfirm = { password -> documentPassword = password })
}
if (showPenPlayground) {
Box(
modifier = Modifier
.fillMaxSize()
.background(Color.Black.copy(alpha = 0.6f))
.clickable { showPenPlayground = false },
contentAlignment = Alignment.Center
) { PenPlayground(onClose = { showPenPlayground = false }) }
}
if (showAiDefinitionPopup) {
AiDefinitionPopup(
word = selectedTextForAi,
result = aiDefinitionResult,
isLoading = isAiDefinitionLoading,
onDismiss = {
showAiDefinitionPopup = false
selectedTextForAi = null
aiDefinitionResult = null
},
isMainTtsActive = isTtsSessionActive
)
}
if (showDictionaryUpsellDialog) {
AlertDialog(onDismissRequest = { showDictionaryUpsellDialog = false }, icon = {
Icon(
painter = painterResource(id = R.drawable.ai),
contentDescription = null
)
}, title = { Text("Unlock Smart Dictionary") }, text = {
Text(
"Defining entire phrases and paragraphs up to 2000 characters is a Pro feature. Upgrade to get instant definitions for any selected text."
)
}, confirmButton = {
TextButton(
onClick = {
showDictionaryUpsellDialog = false
onNavigateToPro()
}) { Text("Learn More") }
}, dismissButton = {
TextButton(onClick = { showDictionaryUpsellDialog = false }) {
Text("Not Now")
}
})
}
showReindexDialog?.let { newLanguage ->
if (BuildConfig.IS_PRO) {
AlertDialog(
onDismissRequest = { showReindexDialog = null },
icon = { Icon(Icons.Default.Info, contentDescription = null) },
title = { Text("Re-index Document?") },
text = {
Text(
"You are changing the OCR script to ${newLanguage.displayName}.\n\n" +
"To ensure search accuracy, we need to clear the existing index and re-scan pages that require OCR using this new language.\n\n" +
"This will happen in the background."
)
},
confirmButton = {
TextButton(
onClick = {
coroutineScope.launch {
ocrLanguage = newLanguage
saveOcrLanguage(context, newLanguage)
hasSelectedOcrLanguage = true
currentBookId?.let { id ->
isBackgroundIndexing = true
backgroundIndexingProgress = 0f
withContext(Dispatchers.IO) {
pdfTextRepository.clearBookText(id)
pdfTextRepository.setBookLanguage(id, newLanguage.name)
}
isBackgroundIndexing = false
}
pendingActionAfterOcrSelection?.invoke()
pendingActionAfterOcrSelection = null
showReindexDialog = null
showOcrLanguageDialog = false
}
}
) { Text("Re-index") }
},
dismissButton = {
TextButton(onClick = { showReindexDialog = null }) {
Text("Cancel")
}
}
)
} else {
showReindexDialog = null
}
}
if (showOcrLanguageDialog) {
OcrLanguageSelectionDialog(
currentLanguage = ocrLanguage,
isFirstRun = !hasSelectedOcrLanguage,
onDismiss = {
showOcrLanguageDialog = false
pendingActionAfterOcrSelection = null
},
onLanguageSelected = { selected ->
coroutineScope.launch {
val storedLangName = currentBookId?.let {
pdfTextRepository.getBookLanguage(it)
}
val hasIndexedPages = currentBookId?.let {
pdfTextRepository.getIndexedPages(it).isNotEmpty()
} == true
if (hasIndexedPages && storedLangName != null && storedLangName != selected.name) {
showReindexDialog = selected
showOcrLanguageDialog = false
} else {
ocrLanguage = selected
saveOcrLanguage(context, selected)
hasSelectedOcrLanguage = true
currentBookId?.let {
pdfTextRepository.setBookLanguage(it, selected.name)
}
showOcrLanguageDialog = false
pendingActionAfterOcrSelection?.invoke()
pendingActionAfterOcrSelection = null
}
}
})
}
if (clickedLinkUrl != null) {
val url = clickedLinkUrl!!
AlertDialog(
onDismissRequest = { clickedLinkUrl = null },
title = { Text("External Link") },
text = { Text("You are about to navigate to:\n$url") },
confirmButton = {
TextButton(
onClick = {
try {
uriHandler.openUri(url)
} catch (e: Exception) {
Timber.e(e, "Failed to open URI")
}
clickedLinkUrl = null
}) { Text("Visit") }
},
dismissButton = {
Row {
TextButton(
onClick = {
clipboardManager.setText(AnnotatedString(url))
clickedLinkUrl = null
}) { Text("Copy") }
TextButton(onClick = { clickedLinkUrl = null }) {
Text("Cancel")
}
}
})
}
if (showSaveDialog) {
AlertDialog(
onDismissRequest = { showSaveDialog = false },
title = { Text("Save to Device") },
text = { Text("Choose format to save:") },
confirmButton = {
TextButton(
onClick = {
showSaveDialog = false
pendingSaveMode = SaveMode.ANNOTATED
val suggestedName = getSuggestedFilename(
originalFileName, isAnnotated = true
)
saveLauncher.launch(suggestedName)
}) { Text("With Annotations") }
},
dismissButton = {
Row {
TextButton(
onClick = {
showSaveDialog = false
pendingSaveMode = SaveMode.ORIGINAL
val suggestedName = getSuggestedFilename(
originalFileName, isAnnotated = false
)
saveLauncher.launch(suggestedName)
}) { Text("Original") }
Spacer(Modifier.width(8.dp))
TextButton(
onClick = {
showSaveDialog = false
pendingSaveMode = null
}) { Text("Cancel") }
}
})
}
if (showShareDialog) {
AlertDialog(
onDismissRequest = { showShareDialog = false },
title = { Text("Share PDF") },
text = { Text("Choose format to share:") },
confirmButton = {
TextButton(
onClick = {
showShareDialog = false
isShareLoading = true
val filename = getSuggestedFilename(
originalFileName, isAnnotated = true
)
coroutineScope.launch {
val currentRichTextLayouts = richTextController?.pageLayouts
viewModel.sharePdf(
activityContext = context,
sourceUri = pdfUri,
annotations = allAnnotations,
richTextPageLayouts = currentRichTextLayouts,
textBoxes = textBoxes.toList(),
includeAnnotations = true,
filename = filename,
bookId = currentBookId
)
isShareLoading = false
}
}) { Text("With Annotations") }
},
dismissButton = {
Row {
TextButton(
onClick = {
showShareDialog = false
isShareLoading = true
val filename = getSuggestedFilename(
originalFileName, isAnnotated = false
)
coroutineScope.launch {
viewModel.sharePdf(
activityContext = context,
sourceUri = pdfUri,
annotations = allAnnotations,
includeAnnotations = false,
filename = filename
)
isShareLoading = false
}
}) { Text("Original") }
Spacer(Modifier.width(8.dp))
TextButton(onClick = { showShareDialog = false }) {
Text("Cancel")
}
}
})
}
if (isShareLoading) {
Box(
modifier = Modifier
.fillMaxSize()
.background(Color.Black.copy(alpha = 0.5f))
.clickable(enabled = false) {}, contentAlignment = Alignment.Center
) {
Surface(
shape = RoundedCornerShape(16.dp),
color = MaterialTheme.colorScheme.surface,
tonalElevation = 6.dp
) {
Column(
modifier = Modifier.padding(24.dp),
horizontalAlignment = Alignment.CenterHorizontally,
verticalArrangement = Arrangement.Center
) {
CircularProgressIndicator(
modifier = Modifier.size(32.dp), strokeWidth = 3.dp
)
Spacer(modifier = Modifier.height(16.dp))
Text(
text = "Preparing PDF...",
style = MaterialTheme.typography.bodyLarge
)
}
}
}
}
val autoScrollPadding by animateDpAsState(
targetValue = if (showBars) (56.dp + 16.dp) else 16.dp,
label = "AutoScrollPadding"
)
val isAutoScrollControlsVisible = isAutoScrollModeActive && (!isAutoScrollLocked || showBars)
val alignmentBias by animateFloatAsState(
targetValue = if (isAutoScrollCollapsed) 1f else 0f,
label = "AutoScrollAlignAnimation"
)
AnimatedVisibility(
visible = isAutoScrollControlsVisible,
enter = slideInVertically { it } + fadeIn(),
exit = slideOutVertically { it } + fadeOut(),
modifier = Modifier
.align(BiasAlignment(alignmentBias, 1f))
.padding(bottom = autoScrollPadding)
.padding(horizontal = 16.dp)
) {
AutoScrollControls(
isPlaying = isAutoScrollPlaying,
isTempPaused = isAutoScrollTempPaused,
onPlayPauseToggle = { isAutoScrollPlaying = !isAutoScrollPlaying },
speed = autoScrollSpeed,
minSpeed = autoScrollMinSpeed,
maxSpeed = autoScrollMaxSpeed,
onSpeedChange = {
autoScrollSpeed = it
savePdfAutoScrollSpeed(context, it)
},
onMinSpeedChange = { newMin ->
autoScrollMinSpeed = newMin
savePdfAutoScrollMinSpeed(context, newMin)
if (autoScrollMaxSpeed < newMin) {
autoScrollMaxSpeed = newMin
savePdfAutoScrollMaxSpeed(context, newMin)
}
if (autoScrollSpeed < newMin) {
autoScrollSpeed = newMin
savePdfAutoScrollSpeed(context, newMin)
} else if (autoScrollSpeed > autoScrollMaxSpeed) {
autoScrollSpeed = autoScrollMaxSpeed
savePdfAutoScrollSpeed(context, autoScrollMaxSpeed)
}
},
onMaxSpeedChange = { newMax ->
autoScrollMaxSpeed = newMax
savePdfAutoScrollMaxSpeed(context, newMax)
if (autoScrollMinSpeed > newMax) {
autoScrollMinSpeed = newMax
savePdfAutoScrollMinSpeed(context, newMax)
}
if (autoScrollSpeed > newMax) {
autoScrollSpeed = newMax
savePdfAutoScrollSpeed(context, newMax)
} else if (autoScrollSpeed < autoScrollMinSpeed) {
autoScrollSpeed = autoScrollMinSpeed
savePdfAutoScrollSpeed(context, autoScrollMinSpeed)
}
},
onClose = {
isAutoScrollModeActive = false
isAutoScrollPlaying = false
showBars = true
},
isCollapsed = isAutoScrollCollapsed,
onCollapseChange = { isAutoScrollCollapsed = it },
isLocked = isAutoScrollLocked,
onLockToggle = {
isAutoScrollLocked = !isAutoScrollLocked
savePdfAutoScrollLocked(context, isAutoScrollLocked)
},
useSlider = autoScrollUseSlider,
onInputModeToggle = {
autoScrollUseSlider = !autoScrollUseSlider
savePdfAutoScrollUseSlider(context, autoScrollUseSlider)
}
)
}
}
}
}
}
@Composable
private fun PageScrubbingAnimation(currentPage: Int, totalPages: Int) {
Box(
modifier = Modifier
.fillMaxSize()
.clickable(
indication = null, interactionSource = remember { MutableInteractionSource() }) {},
contentAlignment = Alignment.Center
) {
Column(
horizontalAlignment = Alignment.CenterHorizontally, modifier = Modifier
.background(
color = MaterialTheme.colorScheme.surface.copy(
alpha = 0.9f
), shape = RoundedCornerShape(16.dp)
)
.padding(horizontal = 24.dp, vertical = 16.dp)
) {
Icon(
painter = painterResource(id = R.drawable.slider),
contentDescription = null,
modifier = Modifier.size(48.dp),
tint = MaterialTheme.colorScheme.primary
)
Spacer(Modifier.height(12.dp))
Text(
text = "Page $currentPage of $totalPages",
style = MaterialTheme.typography.headlineSmall,
color = MaterialTheme.colorScheme.onSurface
)
}
}
}
@Composable
private fun ThumbnailWithIndicator(
thumbnail: Bitmap, modifier: Modifier = Modifier, onClick: () -> Unit
) {
val borderColor = MaterialTheme.colorScheme.primary
Column(modifier = modifier, horizontalAlignment = Alignment.CenterHorizontally) {
Surface(
modifier = Modifier
.width(45.dp)
.height(64.dp)
.clickable(onClick = onClick),
shape = RoundedCornerShape(4.dp),
border = BorderStroke(2.dp, borderColor)
) {
Image(
bitmap = thumbnail.asImageBitmap(),
contentDescription = "Start page thumbnail",
contentScale = ContentScale.FillBounds,
modifier = Modifier.fillMaxSize()
)
}
Box(modifier = Modifier
.offset(y = (-4).dp)
.size(8.dp)
.rotate(45f)
.background(borderColor))
}
}
private fun debugPdfLinks(
context: Context, pdfUri: Uri, pdfiumCore: PdfiumCoreKt, coroutineScope: CoroutineScope
) {
Timber.d("--- Starting PDF Link Analysis ---")
Timber.d("URI: $pdfUri")
coroutineScope.launch(Dispatchers.IO) {
var pfd: ParcelFileDescriptor?
var doc: PdfDocumentKt? = null
var page: PdfPageKt? = null
try {
pfd = context.contentResolver.openFileDescriptor(pdfUri, "r")
if (pfd == null) {
Timber.e("Failed to open ParcelFileDescriptor.")
return@launch
}
doc = pdfiumCore.newDocument(pfd)
val pageCount = doc.getPageCount()
Timber.d("Document loaded. Page count: $pageCount")
if (pageCount > 0) {
val pageIndex = 0 // Testing the first page
page = doc.openPage(pageIndex)
Timber.d("Opened page $pageIndex")
Timber.d(
"Performing a dummy 1x1 render with renderAnnot=true to force annotation parsing..."
)
val dummyBitmap = createBitmap(1, 1)
page.renderPageBitmap(
bitmap = dummyBitmap,
startX = 0,
startY = 0,
drawSizeX = 1,
drawSizeY = 1,
renderAnnot = true // This is the crucial flag
)
dummyBitmap.recycle() // Clean up immediately
Timber.d("Dummy render complete. Now checking for links again.")
// Method 1: The one that is failing (now should work)
val annotationLinks = page.getPageLinks()
Timber.d("[METHOD 1] getPageLinks() found ${annotationLinks.size} links.")
if (annotationLinks.isNotEmpty()) {
annotationLinks.forEachIndexed { index, link ->
Timber.d(" - Link ${index}: URI='${link.uri}', Bounds='${link.bounds}'")
}
}
// Method 2: The one that is working
page.openTextPage().use { textPage ->
textPage.loadWebLink().use { webLinks ->
val webLinkCount = webLinks.countWebLinks()
Timber.d("[METHOD 2] loadWebLink() found $webLinkCount links.")
if (webLinkCount > 0) {
for (i in 0 until webLinkCount) {
val url = webLinks.getURL(i, 2048)
Timber.d(
" - WebLink ${i}: URL='${url?.substringBefore('\u0000')}'"
)
}
}
}
}
}
} catch (e: Exception) {
Timber.e(e, "An error occurred during link debugging.")
} finally {
try {
page?.close()
} catch (_: Exception) {
}
try {
doc?.close()
} catch (_: Exception) {
}
Timber.d("--- PDF Link Analysis Finished ---")
}
}
}
@Composable
internal fun BookmarkButton(
isBookmarked: Boolean, onClick: () -> Unit, modifier: Modifier = Modifier
) {
Box(
modifier = modifier
.width(48.dp)
.height(48.dp)
.clip(RectangleShape)
.clickable(
interactionSource = remember { MutableInteractionSource() },
indication = null,
onClick = onClick
), contentAlignment = Alignment.TopCenter
) {
AnimatedVisibility(visible = isBookmarked, enter = fadeIn(), exit = fadeOut()) {
Icon(
painter = painterResource(id = R.drawable.bookmark),
contentDescription = "Bookmark",
modifier = Modifier.size(24.dp),
tint = MaterialTheme.colorScheme.primary
)
}
}
}
@Composable
private fun ZoomPercentageIndicator(percentage: Int) {
Surface(
shape = RoundedCornerShape(8.dp), color = MaterialTheme.colorScheme.scrim.copy(alpha = 0.8f)
) {
Text(
text = "$percentage%",
color = Color.White,
style = MaterialTheme.typography.bodyLarge,
modifier = Modifier.padding(horizontal = 12.dp, vertical = 6.dp)
)
}
}
@Composable
private fun PasswordDialog(isError: Boolean, onDismiss: () -> Unit, onConfirm: (String) -> Unit) {
var password by remember { mutableStateOf("") }
var passwordVisible by remember { mutableStateOf(false) }
AlertDialog(onDismissRequest = onDismiss, title = { Text("Password Protected") }, text = {
Column {
Text("This document is encrypted. Please enter the password to view it.")
Spacer(modifier = Modifier.height(16.dp))
OutlinedTextField(
value = password,
onValueChange = { password = it },
label = { Text("Password") },
singleLine = true,
visualTransformation = if (passwordVisible) VisualTransformation.None
else PasswordVisualTransformation(),
keyboardActions = KeyboardActions(onDone = { onConfirm(password) }),
isError = isError,
supportingText = if (isError) {
{ Text("Incorrect password") }
} else null,
trailingIcon = {
val image = if (passwordVisible) Icons.Filled.Visibility
else Icons.Filled.VisibilityOff
val description = if (passwordVisible) "Hide password" else "Show password"
IconButton(onClick = { passwordVisible = !passwordVisible }) {
Icon(imageVector = image, description)
}
},
modifier = Modifier.fillMaxWidth()
)
}
}, confirmButton = {
Button(onClick = { onConfirm(password) }, enabled = password.isNotBlank()) {
Text("Open")
}
}, dismissButton = { TextButton(onClick = onDismiss) { Text("Cancel") } })
}
@Composable
fun PenPlayground(onClose: () -> Unit) {
var selectedPen by remember { mutableStateOf(PenType.FOUNTAIN_PEN) }
var selectedColor by remember { mutableStateOf(Color(0xFF2196F3)) } // Default Blue
val colors = listOf(
Color(0xFFF44336), // Red
Color(0xFFFFEB3B), // Yellow
Color(0xFF2196F3), // Blue
Color(0xFF4CAF50), // Green
Color(0xFF9C27B0), // Purple
Color.White, // White
Color.Black // Black
)
// Dark Card Background
Surface(
modifier = Modifier
.fillMaxWidth(0.95f)
.padding(16.dp),
shape = RoundedCornerShape(28.dp),
color = Color(0xFF1E1E1E), // Deep Matte Dark Grey
shadowElevation = 16.dp,
tonalElevation = 0.dp
) {
Column(
modifier = Modifier.padding(vertical = 24.dp, horizontal = 16.dp),
horizontalAlignment = Alignment.CenterHorizontally
) {
// Header with Close Button
Row(
modifier = Modifier.fillMaxWidth(),
horizontalArrangement = Arrangement.SpaceBetween,
verticalAlignment = Alignment.CenterVertically
) {
// Placeholder icon (Star) on left
Icon(
imageVector = Icons.Default.Star,
contentDescription = null,
tint = Color.Gray,
modifier = Modifier.padding(start = 12.dp)
)
IconButton(onClick = onClose) {
Icon(
painter = painterResource(
id = R.drawable.close
), // Ensure you have a close icon or use Icons.Default.Close
contentDescription = "Close", tint = Color.Gray
)
}
}
Spacer(Modifier.height(40.dp))
// --- The Pen Rack ---
Row(
modifier = Modifier
.fillMaxWidth()
.height(140.dp), // Height for pens + ink stroke space
horizontalArrangement = Arrangement.SpaceEvenly,
verticalAlignment = Alignment.Bottom
) {
PenType.entries.forEach { type ->
val isSelected = selectedPen == type
// Selected pens float up slightly
val offsetY by animateDpAsState(
targetValue = if (isSelected) (-20).dp else 0.dp, label = "offset"
)
// Selected pens scale up
val scale by animateFloatAsState(
targetValue = if (isSelected) 1.2f else 1.0f, label = "scale"
)
Column(
horizontalAlignment = Alignment.CenterHorizontally,
modifier = Modifier
.offset(y = offsetY)
.scale(scale)
.clickable(
interactionSource = remember { MutableInteractionSource() },
indication = null // Remove ripple for cleaner look
) { selectedPen = type }) {
// Drawing Area
Box(
modifier = Modifier
.width(40.dp)
.height(120.dp), // Tall enough for stroke + pen
contentAlignment = Alignment.BottomCenter
) {
PenIcon(
color = selectedColor,
type = type,
isSelected = isSelected,
modifier = Modifier
.fillMaxWidth()
.fillMaxHeight(0.8f)
)
}
}
}
}
Spacer(Modifier.height(24.dp))
// Subtle Divider
HorizontalDivider(
modifier = Modifier.padding(horizontal = 12.dp),
color = Color.White.copy(alpha = 0.1f),
thickness = 1.dp
)
Spacer(Modifier.height(24.dp))
// --- Color Palette ---
Row(
modifier = Modifier.fillMaxWidth(), horizontalArrangement = Arrangement.SpaceEvenly
) {
colors.forEach { color ->
val isSelected = selectedColor == color
Box(
contentAlignment = Alignment.Center,
modifier = Modifier
.size(40.dp)
.clickable { selectedColor = color }) {
Canvas(modifier = Modifier.fillMaxSize()) {
drawCircle(color = color)
if (isSelected) {
drawCircle(
color = Color.White,
radius = size.minDimension / 2,
style = Stroke(width = 3.dp.toPx())
)
}
}
if (isSelected && color == Color.White) {
Icon(
imageVector = Icons.Default.Check,
contentDescription = null,
tint = Color.Black,
modifier = Modifier.size(20.dp)
)
} else if (isSelected) {
Icon(
imageVector = Icons.Default.Check,
contentDescription = null,
tint = if (color == Color.Black) Color.White
else Color.Black.copy(alpha = 0.6f),
modifier = Modifier.size(20.dp)
)
}
}
}
}
Spacer(Modifier.height(16.dp))
}
}
}
@Composable
private fun OcrLanguageSelectionDialog(
currentLanguage: OcrLanguage,
isFirstRun: Boolean,
onDismiss: () -> Unit,
onLanguageSelected: (OcrLanguage) -> Unit
) {
AlertDialog(onDismissRequest = onDismiss, title = { Text("Select OCR Language") }, text = {
Column(Modifier.selectableGroup()) {
Text(
"Choose the primary language/script of this document for better text recognition results.",
style = MaterialTheme.typography.bodyMedium,
modifier = Modifier.padding(bottom = 8.dp)
)
if (isFirstRun) {
Surface(
color = MaterialTheme.colorScheme.secondaryContainer,
shape = RoundedCornerShape(8.dp),
modifier = Modifier.padding(bottom = 16.dp)
) {
Row(
Modifier.padding(8.dp), verticalAlignment = Alignment.CenterVertically
) {
Icon(
imageVector = Icons.Default.Info,
contentDescription = null,
modifier = Modifier.size(16.dp),
tint = MaterialTheme.colorScheme.onSecondaryContainer
)
Spacer(Modifier.width(8.dp))
Text(
"You can change this later in More Options > OCR Language.",
style = MaterialTheme.typography.bodySmall,
color = MaterialTheme.colorScheme.onSecondaryContainer
)
}
}
} else {
Spacer(Modifier.height(8.dp))
}
OcrLanguage.entries.forEach { language ->
Row(
Modifier
.fillMaxWidth()
.height(56.dp)
.selectable(
selected = (language == currentLanguage),
onClick = { onLanguageSelected(language) },
role = Role.RadioButton
)
.padding(horizontal = 16.dp),
verticalAlignment = Alignment.CenterVertically
) {
RadioButton(selected = (language == currentLanguage), onClick = null)
Text(
text = language.displayName,
style = MaterialTheme.typography.bodyLarge,
modifier = Modifier.padding(start = 16.dp)
)
}
}
}
}, confirmButton = { TextButton(onClick = onDismiss) { Text("Cancel") } })
}
@Composable
private fun SearchNavigationPill(
text: String,
mode: SearchHighlightMode,
onToggleMode: () -> Unit,
onPrev: () -> Unit,
onNext: () -> Unit,
onTextClick: () -> Unit,
isPrevEnabled: Boolean = true,
isNextEnabled: Boolean = true
) {
Surface(
shape = RoundedCornerShape(50),
color = MaterialTheme.colorScheme.surfaceContainerHighest,
contentColor = MaterialTheme.colorScheme.onSurface,
modifier = Modifier
.shadow(6.dp, RoundedCornerShape(50))
.height(56.dp)
) {
Row(
verticalAlignment = Alignment.CenterVertically,
horizontalArrangement = Arrangement.spacedBy(4.dp),
modifier = Modifier.padding(horizontal = 8.dp)
) {
// Toggle Mode
IconButton(onClick = onToggleMode) {
Icon(
imageVector = if (mode == SearchHighlightMode.ALL) Icons.Default.Visibility
else Icons.Default.VisibilityOff,
contentDescription = "Toggle Highlights",
tint = if (mode == SearchHighlightMode.ALL) MaterialTheme.colorScheme.primary
else MaterialTheme.colorScheme.onSurfaceVariant
)
}
// Vertical Divider
Box(
modifier = Modifier
.width(1.dp)
.height(24.dp)
.background(
MaterialTheme.colorScheme.onSurfaceVariant.copy(
alpha = 0.3f
)
)
)
// Prev
IconButton(onClick = onPrev, enabled = isPrevEnabled) {
Icon(
imageVector = Icons.Default.KeyboardArrowUp,
contentDescription = "Previous",
tint = if (isPrevEnabled) MaterialTheme.colorScheme.onSurface
else MaterialTheme.colorScheme.onSurface.copy(alpha = 0.38f)
)
}
// Counter/Text
Box(
modifier = Modifier
.clickable(
interactionSource = remember { MutableInteractionSource() },
indication = null,
onClick = onTextClick
)
.padding(horizontal = 8.dp)
) {
Text(
text = text,
style = MaterialTheme.typography.labelLarge,
fontWeight = FontWeight.Bold
)
}
// Next
IconButton(onClick = onNext, enabled = isNextEnabled) {
Icon(
imageVector = Icons.Default.KeyboardArrowDown,
contentDescription = "Next",
tint = if (isNextEnabled) MaterialTheme.colorScheme.onSurface
else MaterialTheme.colorScheme.onSurface.copy(alpha = 0.38f)
)
}
}
}
}
@Composable
fun PdfSearchResultsPanel(
lazyResults: LazyPagingItems,
totalPageCount: Int,
onResultClick: (SearchResult) -> Unit,
modifier: Modifier = Modifier
) {
Surface(modifier = modifier.fillMaxSize(), color = MaterialTheme.colorScheme.background) {
if (lazyResults.itemCount == 0 && lazyResults.loadState.refresh !is LoadState.Loading) {
Box(modifier = Modifier.fillMaxSize(), contentAlignment = Alignment.Center) {
Text("No results found.", style = MaterialTheme.typography.bodyLarge)
}
} else {
Column {
Text(
text = "Results found on ${totalPageCount}+ pages",
style = MaterialTheme.typography.titleSmall,
modifier = Modifier.padding(horizontal = 16.dp, vertical = 12.dp)
)
HorizontalDivider()
LazyColumn(modifier = Modifier.testTag("SearchResultsList")) {
items(count = lazyResults.itemCount, key = lazyResults.itemKey {
"${it.locationInSource}_${it.occurrenceIndexInLocation}"
}, contentType = lazyResults.itemContentType { "SearchResult" }) { index ->
val result = lazyResults[index]
if (result != null) {
ListItem(
headlineContent = {
Text(
result.locationTitle,
maxLines = 1,
overflow = TextOverflow.Ellipsis
)
}, supportingContent = {
Text(
result.snippet, style = MaterialTheme.typography.bodyMedium
)
}, modifier = Modifier
.testTag(
"SearchResultItem_${result.locationInSource}"
)
.clickable { onResultClick(result) })
HorizontalDivider()
}
}
}
}
}
if (lazyResults.loadState.refresh is LoadState.Loading) {
Box(modifier = Modifier.fillMaxSize(), contentAlignment = Alignment.Center) {
CircularProgressIndicator()
}
}
}
}
@Composable
fun PdfSearchResultsList(
results: List,
onResultClick: (SearchResult) -> Unit,
modifier: Modifier = Modifier
) {
Surface(modifier = modifier.fillMaxSize(), color = MaterialTheme.colorScheme.background) {
if (results.isEmpty()) {
Box(modifier = Modifier.fillMaxSize(), contentAlignment = Alignment.Center) {
Text("No results found.", style = MaterialTheme.typography.bodyLarge)
}
} else {
Column {
Text(
text = "${results.size} matches found",
style = MaterialTheme.typography.titleSmall,
modifier = Modifier.padding(horizontal = 16.dp, vertical = 12.dp)
)
HorizontalDivider()
LazyColumn(modifier = Modifier.testTag("SearchResultsList")) {
itemsIndexed(results) { _, result ->
ListItem(
headlineContent = {
Text(
result.locationTitle,
maxLines = 1,
overflow = TextOverflow.Ellipsis
)
}, supportingContent = {
Text(
result.snippet, style = MaterialTheme.typography.bodyMedium
)
}, modifier = Modifier
.testTag(
"SearchResultItem_${result.locationInSource}"
)
.clickable { onResultClick(result) })
HorizontalDivider()
}
}
}
}
}
}