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Currently translated at 100.0% (597 of 597 strings)

Co-authored-by: abc0922001 <abc0922001@hotmail.com>
Translate-URL: https://hosted.weblate.org/projects/kotatsu/strings/zh_Hant/
Translation: Kotatsu/Strings

README.md

@@ -19,7 +19,7 @@ Kotatsu is a free and open source manga reader for Android.
 * Tablet-optimized Material You UI
 * Standard and Webtoon-optimized reader
 * Notifications about new chapters with updates feed
-* Integration with manga tracking services: Shikimori, AniList, MyAnimeList
+* Integration with manga tracking services: Shikimori, AniList, MyAnimeList, Kitsu
 * Password/fingerprint protect access to the app
 * History and favourites [synchronization](https://github.com/KotatsuApp/kotatsu-syncserver) across devices
 

app/build.gradle

@@ -16,8 +16,8 @@ android {
 		applicationId 'org.koitharu.kotatsu'
 		minSdk = 21
 		targetSdk = 34
-		versionCode = 617
-		versionName = '6.6.7'
+		versionCode = 626
+		versionName = '6.7.4'
 		generatedDensities = []
 		testInstrumentationRunner 'org.koitharu.kotatsu.HiltTestRunner'
 		ksp {
@@ -82,18 +82,19 @@ afterEvaluate {
 }
 dependencies {
 	//noinspection GradleDependency
-	implementation('com.github.KotatsuApp:kotatsu-parsers:57c9d26916') {
+	implementation('com.github.KotatsuApp:kotatsu-parsers:103f578c61') {
 		exclude group: 'org.json', module: 'json'
 	}
 
 	coreLibraryDesugaring 'com.android.tools:desugar_jdk_libs:2.0.4'
 	implementation 'org.jetbrains.kotlin:kotlin-stdlib:1.9.22'
-	implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-android:1.7.3'
+	implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-android:1.8.0'
 
 	implementation 'androidx.appcompat:appcompat:1.6.1'
 	implementation 'androidx.core:core-ktx:1.12.0'
 	implementation 'androidx.activity:activity-ktx:1.8.2'
 	implementation 'androidx.fragment:fragment-ktx:1.6.2'
+	implementation 'androidx.collection:collection:1.4.0'
 	implementation 'androidx.lifecycle:lifecycle-viewmodel-ktx:2.7.0'
 	implementation 'androidx.lifecycle:lifecycle-service:2.7.0'
 	implementation 'androidx.lifecycle:lifecycle-process:2.7.0'
@@ -103,7 +104,7 @@ dependencies {
 	implementation 'androidx.viewpager2:viewpager2:1.1.0-beta02'
 	implementation 'androidx.preference:preference-ktx:1.2.1'
 	implementation 'androidx.biometric:biometric-ktx:1.2.0-alpha05'
-	implementation 'com.google.android.material:material:1.11.0'
+	implementation 'com.google.android.material:material:1.12.0-alpha03'
 	implementation 'androidx.lifecycle:lifecycle-common-java8:2.7.0'
 
 	implementation 'androidx.work:work-runtime:2.9.0'
@@ -120,18 +121,18 @@ dependencies {
 
 	implementation 'com.squareup.okhttp3:okhttp:4.12.0'
 	implementation 'com.squareup.okhttp3:okhttp-dnsoverhttps:4.12.0'
-	implementation 'com.squareup.okio:okio:3.7.0'
+	implementation 'com.squareup.okio:okio:3.8.0'
 
 	implementation 'com.hannesdorfmann:adapterdelegates4-kotlin-dsl:4.3.2'
 	implementation 'com.hannesdorfmann:adapterdelegates4-kotlin-dsl-viewbinding:4.3.2'
 
-	implementation 'com.google.dagger:hilt-android:2.50'
-	kapt 'com.google.dagger:hilt-compiler:2.50'
-	implementation 'androidx.hilt:hilt-work:1.1.0'
-	kapt 'androidx.hilt:hilt-compiler:1.1.0'
+	implementation 'com.google.dagger:hilt-android:2.51'
+	kapt 'com.google.dagger:hilt-compiler:2.51'
+	implementation 'androidx.hilt:hilt-work:1.2.0'
+	kapt 'androidx.hilt:hilt-compiler:1.2.0'
 
-	implementation 'io.coil-kt:coil-base:2.5.0'
-	implementation 'io.coil-kt:coil-svg:2.5.0'
+	implementation 'io.coil-kt:coil-base:2.6.0'
+	implementation 'io.coil-kt:coil-svg:2.6.0'
 	implementation 'com.github.KotatsuApp:subsampling-scale-image-view:02e6d6cfe9'
 	implementation 'com.github.solkin:disk-lru-cache:1.4'
 	implementation 'io.noties.markwon:core:4.6.2'
@@ -146,19 +147,19 @@ dependencies {
 	debugImplementation 'com.squareup.leakcanary:leakcanary-android:2.13'
 
 	testImplementation 'junit:junit:4.13.2'
-	testImplementation 'org.json:json:20231013'
-	testImplementation 'org.jetbrains.kotlinx:kotlinx-coroutines-test:1.7.3'
+	testImplementation 'org.json:json:20240205'
+	testImplementation 'org.jetbrains.kotlinx:kotlinx-coroutines-test:1.8.0'
 
 	androidTestImplementation 'androidx.test:runner:1.5.2'
 	androidTestImplementation 'androidx.test:rules:1.5.0'
 	androidTestImplementation 'androidx.test:core-ktx:1.5.0'
 	androidTestImplementation 'androidx.test.ext:junit-ktx:1.1.5'
 
-	androidTestImplementation 'org.jetbrains.kotlinx:kotlinx-coroutines-test:1.7.3'
+	androidTestImplementation 'org.jetbrains.kotlinx:kotlinx-coroutines-test:1.8.0'
 
 	androidTestImplementation 'androidx.room:room-testing:2.6.1'
-	androidTestImplementation 'com.squareup.moshi:moshi-kotlin:1.15.0'
+	androidTestImplementation 'com.squareup.moshi:moshi-kotlin:1.15.1'
 
-	androidTestImplementation 'com.google.dagger:hilt-android-testing:2.50'
-	kaptAndroidTest 'com.google.dagger:hilt-android-compiler:2.50'
+	androidTestImplementation 'com.google.dagger:hilt-android-testing:2.51'
+	kaptAndroidTest 'com.google.dagger:hilt-android-compiler:2.51'
 }

app/src/androidTest/kotlin/org/koitharu/kotatsu/core/os/AppShortcutManagerTest.kt

@@ -57,6 +57,7 @@ class AppShortcutManagerTest {
 			page = 4,
 			scroll = 2,
 			percent = 0.3f,
+			force = false,
 		)
 		awaitUpdate()
 

app/src/androidTest/kotlin/org/koitharu/kotatsu/settings/backup/AppBackupAgentTest.kt

@@ -7,7 +7,9 @@ import dagger.hilt.android.testing.HiltAndroidRule
 import dagger.hilt.android.testing.HiltAndroidTest
 import kotlinx.coroutines.flow.first
 import kotlinx.coroutines.test.runTest
-import org.junit.Assert.*
+import org.junit.Assert.assertEquals
+import org.junit.Assert.assertNull
+import org.junit.Assert.assertTrue
 import org.junit.Before
 import org.junit.Rule
 import org.junit.Test
@@ -61,6 +63,7 @@ class AppBackupAgentTest {
 			page = 3,
 			scroll = 40,
 			percent = 0.2f,
+			force = false,
 		)
 		val history = checkNotNull(historyRepository.getOne(SampleData.manga))
 

app/src/debug/kotlin/org/koitharu/kotatsu/core/network/CurlLoggingInterceptor.kt

@@ -10,6 +10,8 @@ class CurlLoggingInterceptor(
 	private val curlOptions: String? = null
 ) : Interceptor {
 
+	private val escapeRegex = Regex("([\\[\\]\"])")
+
 	override fun intercept(chain: Interceptor.Chain): Response {
 		val request = chain.request()
 		var isCompressed = false
@@ -40,7 +42,7 @@ class CurlLoggingInterceptor(
 		if (isCompressed) {
 			curlCmd.append(" --compressed")
 		}
-		curlCmd.append(" \"").append(request.url).append('"')
+		curlCmd.append(" \"").append(request.url.toString().escape()).append('"')
 
 		log("---cURL (" + request.url + ")")
 		log(curlCmd.toString())
@@ -48,7 +50,12 @@ class CurlLoggingInterceptor(
 		return chain.proceed(request)
 	}
 
-	private fun String.escape() = replace("\"", "\\\"")
+	private fun String.escape() = replace(escapeRegex) { match ->
+		"\\" + match.value
+	}
+		// .replace("\"", "\\\"")
+		// .replace("[", "\\[")
+		// .replace("]", "\\]")
 
 	private fun log(msg: String) {
 		Log.d("CURL", msg)

app/src/main/AndroidManifest.xml

@@ -145,6 +145,9 @@
 				<data android:host="sync-settings" />
 			</intent-filter>
 		</activity>
+		<activity
+			android:name="org.koitharu.kotatsu.settings.reader.ReaderTapGridConfigActivity"
+			android:label="@string/reader_actions" />
 		<activity
 			android:name="org.koitharu.kotatsu.settings.storage.directories.MangaDirectoriesActivity"
 			android:label="@string/local_manga_directories" />
@@ -218,12 +221,27 @@
 				<data android:host="shikimori-auth" />
 				<data android:host="anilist-auth" />
 				<data android:host="mal-auth" />
+				<data android:host="kitsu-auth" />
 			</intent-filter>
 
 		</activity>
 		<activity
 			android:name="org.koitharu.kotatsu.settings.sources.catalog.SourcesCatalogActivity"
 			android:label="@string/sources_catalog" />
+		<activity
+			android:name="org.koitharu.kotatsu.scrobbling.kitsu.ui.KitsuAuthActivity"
+			android:exported="false"
+			android:label="@string/kitsu"
+			tools:ignore="AppLinkUrlError">
+			<intent-filter>
+				<action android:name="android.intent.action.VIEW" />
+				<category android:name="android.intent.category.DEFAULT" />
+				<data android:scheme="kotatsu+kitsu" />
+			</intent-filter>
+		</activity>
+		<activity
+			android:name="org.koitharu.kotatsu.stats.ui.StatsActivity"
+			android:label="@string/reading_stats" />
 
 		<service
 			android:name="androidx.work.impl.foreground.SystemForegroundService"

app/src/main/kotlin/org/koitharu/kotatsu/bookmarks/ui/sheet/BookmarksAdapter.kt

@@ -13,7 +13,6 @@ import org.koitharu.kotatsu.list.ui.adapter.emptyStateListAD
 import org.koitharu.kotatsu.list.ui.adapter.listHeaderAD
 import org.koitharu.kotatsu.list.ui.adapter.loadingFooterAD
 import org.koitharu.kotatsu.list.ui.adapter.loadingStateAD
-import org.koitharu.kotatsu.list.ui.model.ListHeader
 import org.koitharu.kotatsu.list.ui.model.ListModel
 
 class BookmarksAdapter(
@@ -32,13 +31,6 @@ class BookmarksAdapter(
 	}
 
 	override fun getSectionText(context: Context, position: Int): CharSequence? {
-		val list = items
-		for (i in (0..position).reversed()) {
-			val item = list.getOrNull(i) ?: continue
-			if (item is ListHeader) {
-				return item.getText(context)
-			}
-		}
-		return null
+		return findHeader(position)?.getText(context)
 	}
 }

app/src/main/kotlin/org/koitharu/kotatsu/browser/BrowserActivity.kt

@@ -14,7 +14,6 @@ import androidx.core.view.isVisible
 import androidx.core.view.updatePadding
 import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.core.ui.BaseActivity
-import org.koitharu.kotatsu.core.util.ext.catchingWebViewUnavailability
 import org.koitharu.kotatsu.databinding.ActivityBrowserBinding
 import org.koitharu.kotatsu.parsers.network.UserAgents
 import com.google.android.material.R as materialR
@@ -26,7 +25,7 @@ class BrowserActivity : BaseActivity<ActivityBrowserBinding>(), BrowserCallback
 
 	override fun onCreate(savedInstanceState: Bundle?) {
 		super.onCreate(savedInstanceState)
-		if (!catchingWebViewUnavailability { setContentView(ActivityBrowserBinding.inflate(layoutInflater)) }) {
+		if (!setContentViewWebViewSafe { ActivityBrowserBinding.inflate(layoutInflater) }) {
 			return
 		}
 		supportActionBar?.run {

app/src/main/kotlin/org/koitharu/kotatsu/browser/cloudflare/CloudFlareActivity.kt

@@ -27,7 +27,6 @@ import org.koitharu.kotatsu.core.network.CommonHeaders
 import org.koitharu.kotatsu.core.network.cookies.MutableCookieJar
 import org.koitharu.kotatsu.core.ui.BaseActivity
 import org.koitharu.kotatsu.core.util.TaggedActivityResult
-import org.koitharu.kotatsu.core.util.ext.catchingWebViewUnavailability
 import org.koitharu.kotatsu.databinding.ActivityBrowserBinding
 import org.koitharu.kotatsu.parsers.network.UserAgents
 import javax.inject.Inject
@@ -45,13 +44,7 @@ class CloudFlareActivity : BaseActivity<ActivityBrowserBinding>(), CloudFlareCal
 
 	override fun onCreate(savedInstanceState: Bundle?) {
 		super.onCreate(savedInstanceState)
-		if (!catchingWebViewUnavailability {
-				setContentView(
-					ActivityBrowserBinding.inflate(
-						layoutInflater,
-					),
-				)
-			}) {
+		if (!setContentViewWebViewSafe { ActivityBrowserBinding.inflate(layoutInflater) }) {
 			return
 		}
 		supportActionBar?.run {

app/src/main/kotlin/org/koitharu/kotatsu/core/BaseApp.kt

@@ -55,7 +55,7 @@ open class BaseApp : Application(), Configuration.Provider {
 	lateinit var appValidator: AppValidator
 
 	@Inject
-	lateinit var workScheduleManager: Provider<WorkScheduleManager>
+	lateinit var workScheduleManager: WorkScheduleManager
 
 	@Inject
 	lateinit var workManagerProvider: Provider<WorkManager>
@@ -83,7 +83,7 @@ open class BaseApp : Application(), Configuration.Provider {
 		processLifecycleScope.launch(Dispatchers.Default) {
 			setupDatabaseObservers()
 		}
-		workScheduleManager.get().init()
+		workScheduleManager.init()
 		WorkServiceStopHelper(workManagerProvider).setup()
 	}
 

app/src/main/kotlin/org/koitharu/kotatsu/core/backup/JsonDeserializer.kt

@@ -54,6 +54,7 @@ class JsonDeserializer(private val json: JSONObject) {
 		page = json.getInt("page"),
 		scroll = json.getDouble("scroll").toFloat(),
 		percent = json.getFloatOrDefault("percent", -1f),
+		chaptersCount = json.getIntOrDefault("chapters", -1),
 		deletedAt = 0L,
 	)
 

app/src/main/kotlin/org/koitharu/kotatsu/core/backup/JsonSerializer.kt

@@ -41,6 +41,7 @@ class JsonSerializer private constructor(private val json: JSONObject) {
 			put("page", e.page)
 			put("scroll", e.scroll)
 			put("percent", e.percent)
+			put("chapters", e.chaptersCount)
 		},
 	)
 

app/src/main/kotlin/org/koitharu/kotatsu/core/db/MangaDatabase.kt

@@ -30,6 +30,7 @@ import org.koitharu.kotatsu.core.db.migrations.Migration14To15
 import org.koitharu.kotatsu.core.db.migrations.Migration15To16
 import org.koitharu.kotatsu.core.db.migrations.Migration16To17
 import org.koitharu.kotatsu.core.db.migrations.Migration17To18
+import org.koitharu.kotatsu.core.db.migrations.Migration18To19
 import org.koitharu.kotatsu.core.db.migrations.Migration1To2
 import org.koitharu.kotatsu.core.db.migrations.Migration2To3
 import org.koitharu.kotatsu.core.db.migrations.Migration3To4
@@ -48,20 +49,22 @@ import org.koitharu.kotatsu.history.data.HistoryDao
 import org.koitharu.kotatsu.history.data.HistoryEntity
 import org.koitharu.kotatsu.scrobbling.common.data.ScrobblingDao
 import org.koitharu.kotatsu.scrobbling.common.data.ScrobblingEntity
+import org.koitharu.kotatsu.stats.data.StatsDao
+import org.koitharu.kotatsu.stats.data.StatsEntity
 import org.koitharu.kotatsu.suggestions.data.SuggestionDao
 import org.koitharu.kotatsu.suggestions.data.SuggestionEntity
 import org.koitharu.kotatsu.tracker.data.TrackEntity
 import org.koitharu.kotatsu.tracker.data.TrackLogEntity
 import org.koitharu.kotatsu.tracker.data.TracksDao
 
-const val DATABASE_VERSION = 18
+const val DATABASE_VERSION = 19
 
 @Database(
 	entities = [
 		MangaEntity::class, TagEntity::class, HistoryEntity::class, MangaTagsEntity::class,
 		FavouriteCategoryEntity::class, FavouriteEntity::class, MangaPrefsEntity::class,
 		TrackEntity::class, TrackLogEntity::class, SuggestionEntity::class, BookmarkEntity::class,
-		ScrobblingEntity::class, MangaSourceEntity::class,
+		ScrobblingEntity::class, MangaSourceEntity::class, StatsEntity::class,
 	],
 	version = DATABASE_VERSION,
 )
@@ -90,6 +93,8 @@ abstract class MangaDatabase : RoomDatabase() {
 	abstract fun getScrobblingDao(): ScrobblingDao
 
 	abstract fun getSourcesDao(): MangaSourcesDao
+
+	abstract fun getStatsDao(): StatsDao
 }
 
 fun getDatabaseMigrations(context: Context): Array<Migration> = arrayOf(
@@ -110,6 +115,7 @@ fun getDatabaseMigrations(context: Context): Array<Migration> = arrayOf(
 	Migration15To16(),
 	Migration16To17(context),
 	Migration17To18(),
+	Migration18To19(),
 )
 
 fun MangaDatabase(context: Context): MangaDatabase = Room

app/src/main/kotlin/org/koitharu/kotatsu/core/db/migrations/Migration18To19.kt

@@ -0,0 +1,12 @@
+package org.koitharu.kotatsu.core.db.migrations
+
+import androidx.room.migration.Migration
+import androidx.sqlite.db.SupportSQLiteDatabase
+
+class Migration18To19 : Migration(18, 19) {
+
+	override fun migrate(db: SupportSQLiteDatabase) {
+		db.execSQL("ALTER TABLE history ADD COLUMN `chapters` INTEGER NOT NULL DEFAULT -1")
+		db.execSQL("CREATE TABLE IF NOT EXISTS `stats` (`manga_id` INTEGER NOT NULL, `started_at` INTEGER NOT NULL, `duration` INTEGER NOT NULL, `pages` INTEGER NOT NULL, PRIMARY KEY(`manga_id`, `started_at`), FOREIGN KEY(`manga_id`) REFERENCES `history`(`manga_id`) ON UPDATE NO ACTION ON DELETE CASCADE )")
+	}
+}

app/src/main/kotlin/org/koitharu/kotatsu/core/model/Manga.kt

@@ -3,6 +3,7 @@ package org.koitharu.kotatsu.core.model
 import android.net.Uri
 import androidx.annotation.DrawableRes
 import androidx.annotation.StringRes
+import androidx.collection.MutableObjectIntMap
 import androidx.core.os.LocaleListCompat
 import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.core.util.ext.iterator
@@ -13,6 +14,8 @@ import org.koitharu.kotatsu.parsers.model.MangaChapter
 import org.koitharu.kotatsu.parsers.model.MangaSource
 import org.koitharu.kotatsu.parsers.model.MangaState
 import org.koitharu.kotatsu.parsers.util.mapToSet
+import java.text.DecimalFormat
+import java.text.DecimalFormatSymbols
 import com.google.android.material.R as materialR
 
 @JvmName("mangaIds")
@@ -29,12 +32,14 @@ fun Collection<ChapterListItem>.countChaptersByBranch(): Int {
 	if (size <= 1) {
 		return size
 	}
-	val acc = HashMap<String?, Int>()
+	val acc = MutableObjectIntMap<String?>()
 	for (item in this) {
 		val branch = item.chapter.branch
-		acc[branch] = (acc[branch] ?: 0) + 1
+		acc[branch] = acc.getOrDefault(branch, 0) + 1
 	}
-	return acc.values.max()
+	var max = 0
+	acc.forEachValue { x -> if (x > max) max = x }
+	return max
 }
 
 @get:StringRes
@@ -113,3 +118,16 @@ val Manga.appUrl: Uri
 		.appendQueryParameter("name", title)
 		.appendQueryParameter("url", url)
 		.build()
+
+private val chaptersNumberFormat = DecimalFormat("#.#").also { f ->
+	f.decimalFormatSymbols = DecimalFormatSymbols.getInstance().also {
+		it.decimalSeparator = '.'
+	}
+}
+
+fun MangaChapter.formatNumber(): String? {
+	if (number <= 0f) {
+		return null
+	}
+	return chaptersNumberFormat.format(number.toDouble())
+}

app/src/main/kotlin/org/koitharu/kotatsu/core/network/ImageProxyInterceptor.kt

@@ -7,6 +7,7 @@ import coil.request.ErrorResult
 import coil.request.ImageResult
 import coil.request.SuccessResult
 import coil.size.Dimension
+import coil.size.isOriginal
 import okhttp3.HttpUrl
 import okhttp3.HttpUrl.Companion.toHttpUrlOrNull
 import okhttp3.OkHttpClient
@@ -46,11 +47,13 @@ class ImageProxyInterceptor @Inject constructor(
 			.scheme("https")
 			.host("wsrv.nl")
 			.addQueryParameter("url", url.toString())
-			.addQueryParameter("fit", "outside")
 			.addQueryParameter("we", null)
 		val size = request.sizeResolver.size()
-		(size.height as? Dimension.Pixels)?.let { newUrl.addQueryParameter("h", it.toString()) }
-		(size.width as? Dimension.Pixels)?.let { newUrl.addQueryParameter("w", it.toString()) }
+		if (!size.isOriginal) {
+			newUrl.addQueryParameter("crop", "cover")
+			(size.height as? Dimension.Pixels)?.let { newUrl.addQueryParameter("h", it.toString()) }
+			(size.width as? Dimension.Pixels)?.let { newUrl.addQueryParameter("w", it.toString()) }
+		}
 
 		val newRequest = request.newBuilder()
 			.data(newUrl.build())

app/src/main/kotlin/org/koitharu/kotatsu/core/os/AppValidator.kt

@@ -1,16 +1,9 @@
 package org.koitharu.kotatsu.core.os
 
-import android.annotation.SuppressLint
 import android.content.Context
 import android.content.pm.PackageManager
+import androidx.core.content.pm.PackageInfoCompat
 import dagger.hilt.android.qualifiers.ApplicationContext
-import org.koitharu.kotatsu.core.util.ext.printStackTraceDebug
-import org.koitharu.kotatsu.parsers.util.byte2HexFormatted
-import java.io.ByteArrayInputStream
-import java.io.InputStream
-import java.security.MessageDigest
-import java.security.cert.CertificateFactory
-import java.security.cert.X509Certificate
 import javax.inject.Inject
 import javax.inject.Singleton
 
@@ -18,29 +11,13 @@ import javax.inject.Singleton
 class AppValidator @Inject constructor(
 	@ApplicationContext private val context: Context,
 ) {
-
+	@Suppress("NewApi")
 	val isOriginalApp by lazy {
-		getCertificateSHA1Fingerprint() == CERT_SHA1
+		val certificates = mapOf(CERT_SHA256.hexToByteArray() to PackageManager.CERT_INPUT_SHA256)
+		PackageInfoCompat.hasSignatures(context.packageManager, context.packageName, certificates, false)
 	}
 
-	@Suppress("DEPRECATION")
-	@SuppressLint("PackageManagerGetSignatures")
-	private fun getCertificateSHA1Fingerprint(): String? = runCatching {
-		val packageInfo = context.packageManager.getPackageInfo(context.packageName, PackageManager.GET_SIGNATURES)
-		val signatures = requireNotNull(packageInfo?.signatures)
-		val cert: ByteArray = signatures.first().toByteArray()
-		val input: InputStream = ByteArrayInputStream(cert)
-		val cf = CertificateFactory.getInstance("X509")
-		val c = cf.generateCertificate(input) as X509Certificate
-		val md: MessageDigest = MessageDigest.getInstance("SHA1")
-		val publicKey: ByteArray = md.digest(c.encoded)
-		return publicKey.byte2HexFormatted()
-	}.onFailure { error ->
-		error.printStackTraceDebug()
-	}.getOrNull()
-
 	private companion object {
-
-		private const val CERT_SHA1 = "2C:19:C7:E8:07:61:2B:8E:94:51:1B:FD:72:67:07:64:5D:C2:58:AE"
+		private const val CERT_SHA256 = "67e15100bb809301783edcb6348fa3bbf83034d91e62868a91053dbd70db3f18"
 	}
 }

app/src/main/kotlin/org/koitharu/kotatsu/core/parser/RemoteMangaRepository.kt

@@ -1,6 +1,7 @@
 package org.koitharu.kotatsu.core.parser
 
 import android.util.Log
+import androidx.collection.MutableLongSet
 import coil.request.CachePolicy
 import kotlinx.coroutines.CoroutineDispatcher
 import kotlinx.coroutines.CoroutineScope
@@ -189,7 +190,7 @@ class RemoteMangaRepository(
 			return emptyList()
 		}
 		val result = ArrayList<MangaPage>(size)
-		val set = HashSet<Long>(size)
+		val set = MutableLongSet(size)
 		for (page in this) {
 			if (set.add(page.id)) {
 				result.add(page)
@@ -226,6 +227,5 @@ class RemoteMangaRepository(
 		}
 	}
 
-	private fun Result<*>.isValidResult() = exceptionOrNull() !is ParseException
-		&& (getOrNull() as? Collection<*>)?.isEmpty() != true
+	private fun Result<*>.isValidResult() = isSuccess && (getOrNull() as? Collection<*>)?.isEmpty() != true
 }

app/src/main/kotlin/org/koitharu/kotatsu/core/prefs/AppSettings.kt

@@ -11,6 +11,7 @@ import androidx.appcompat.app.AppCompatDelegate
 import androidx.collection.ArraySet
 import androidx.core.content.edit
 import androidx.core.os.LocaleListCompat
+import androidx.documentfile.provider.DocumentFile
 import androidx.preference.PreferenceManager
 import dagger.hilt.android.qualifiers.ApplicationContext
 import org.json.JSONArray
@@ -26,6 +27,7 @@ import org.koitharu.kotatsu.explore.data.SourcesSortOrder
 import org.koitharu.kotatsu.list.domain.ListSortOrder
 import org.koitharu.kotatsu.parsers.model.SortOrder
 import org.koitharu.kotatsu.parsers.util.find
+import org.koitharu.kotatsu.parsers.util.isNumeric
 import org.koitharu.kotatsu.parsers.util.mapNotNullToSet
 import org.koitharu.kotatsu.parsers.util.mapToSet
 import org.koitharu.kotatsu.reader.domain.ReaderColorFilter
@@ -70,6 +72,9 @@ class AppSettings @Inject constructor(@ApplicationContext context: Context) {
 			}
 		}
 
+	val isNavLabelsVisible: Boolean
+		get() = prefs.getBoolean(KEY_NAV_LABELS, true)
+
 	var gridSize: Int
 		get() = prefs.getInt(KEY_GRID_SIZE, 100)
 		set(value) = prefs.edit { putInt(KEY_GRID_SIZE, value) }
@@ -101,14 +106,21 @@ class AppSettings @Inject constructor(@ApplicationContext context: Context) {
 			}
 		}
 
-	val readerPageSwitch: Set<String>
-		get() = prefs.getStringSet(KEY_READER_SWITCHERS, null) ?: setOf(PAGE_SWITCH_TAPS)
+	var isReaderDoubleOnLandscape: Boolean
+		get() = prefs.getBoolean(KEY_READER_DOUBLE_PAGES, false)
+		set(value) = prefs.edit { putBoolean(KEY_READER_DOUBLE_PAGES, value) }
+
+	val isReaderVolumeButtonsEnabled: Boolean
+		get() = prefs.getBoolean(KEY_READER_VOLUME_BUTTONS, false)
 
 	val isReaderZoomButtonsEnabled: Boolean
 		get() = prefs.getBoolean(KEY_READER_ZOOM_BUTTONS, false)
 
-	val isReaderTapsAdaptive: Boolean
-		get() = !prefs.getBoolean(KEY_READER_TAPS_LTR, false)
+	val isReaderControlAlwaysLTR: Boolean
+		get() = prefs.getBoolean(KEY_READER_CONTROL_LTR, false)
+
+	val isReaderFullscreenEnabled: Boolean
+		get() = prefs.getBoolean(KEY_READER_FULLSCREEN, true)
 
 	val isReaderOptimizationEnabled: Boolean
 		get() = prefs.getBoolean(KEY_READER_OPTIMIZE, false)
@@ -180,11 +192,13 @@ class AppSettings @Inject constructor(@ApplicationContext context: Context) {
 	var appPassword: String?
 		get() = prefs.getString(KEY_APP_PASSWORD, null)
 		set(value) = prefs.edit {
-			if (value != null) putString(KEY_APP_PASSWORD, value) else remove(
-				KEY_APP_PASSWORD,
-			)
+			if (value != null) putString(KEY_APP_PASSWORD, value) else remove(KEY_APP_PASSWORD)
 		}
 
+	var isAppPasswordNumeric: Boolean
+		get() = prefs.getBoolean(KEY_APP_PASSWORD_NUMERIC, false)
+		set(value) = prefs.edit { putBoolean(KEY_APP_PASSWORD_NUMERIC, value) }
+
 	val isLoggingEnabled: Boolean
 		get() = prefs.getBoolean(KEY_LOGGING_ENABLED, false)
 
@@ -266,6 +280,9 @@ class AppSettings @Inject constructor(@ApplicationContext context: Context) {
 	val isDownloadsWiFiOnly: Boolean
 		get() = prefs.getBoolean(KEY_DOWNLOADS_WIFI, false)
 
+	val preferredDownloadFormat: DownloadFormat
+		get() = prefs.getEnumValue(KEY_DOWNLOADS_FORMAT, DownloadFormat.AUTOMATIC)
+
 	var isSuggestionsEnabled: Boolean
 		get() = prefs.getBoolean(KEY_SUGGESTIONS, false)
 		set(value) = prefs.edit { putBoolean(KEY_SUGGESTIONS, value) }
@@ -360,6 +377,10 @@ class AppSettings @Inject constructor(@ApplicationContext context: Context) {
 	val isWebtoonZoomEnable: Boolean
 		get() = prefs.getBoolean(KEY_WEBTOON_ZOOM, true)
 
+	@get:FloatRange(from = 0.0, to = 0.5)
+	val defaultWebtoonZoomOut: Float
+		get() = prefs.getInt(KEY_WEBTOON_ZOOM_OUT, 0).coerceIn(0, 50) / 100f
+
 	@get:FloatRange(from = 0.0, to = 1.0)
 	var readerAutoscrollSpeed: Float
 		get() = prefs.getFloat(KEY_READER_AUTOSCROLL_SPEED, 0f)
@@ -395,6 +416,15 @@ class AppSettings @Inject constructor(@ApplicationContext context: Context) {
 		get() = prefs.getString(KEY_BACKUP_PERIODICAL_OUTPUT, null)?.toUriOrNull()
 		set(value) = prefs.edit { putString(KEY_BACKUP_PERIODICAL_OUTPUT, value?.toString()) }
 
+	val isReadingTimeEstimationEnabled: Boolean
+		get() = prefs.getBoolean(KEY_READING_TIME, true)
+
+	val isPagesSavingAskEnabled: Boolean
+		get() = prefs.getBoolean(KEY_PAGES_SAVE_ASK, true)
+
+	val isStatsEnabled: Boolean
+		get() = prefs.getBoolean(KEY_STATS_ENABLED, false)
+
 	fun isTipEnabled(tip: String): Boolean {
 		return prefs.getStringSet(KEY_TIPS_CLOSED, emptySet())?.contains(tip) != true
 	}
@@ -407,6 +437,15 @@ class AppSettings @Inject constructor(@ApplicationContext context: Context) {
 		prefs.edit { putStringSet(KEY_TIPS_CLOSED, closedTips + tip) }
 	}
 
+	fun getPagesSaveDir(context: Context): DocumentFile? =
+		prefs.getString(KEY_PAGES_SAVE_DIR, null)?.toUriOrNull()?.let {
+			DocumentFile.fromTreeUri(context, it)?.takeIf { it.canWrite() }
+		}
+
+	fun setPagesSaveDir(uri: Uri?) {
+		prefs.edit { putString(KEY_PAGES_SAVE_DIR, uri?.toString()) }
+	}
+
 	fun subscribe(listener: SharedPreferences.OnSharedPreferenceChangeListener) {
 		prefs.registerOnSharedPreferenceChangeListener(listener)
 	}
@@ -453,7 +492,6 @@ class AppSettings @Inject constructor(@ApplicationContext context: Context) {
 
 	companion object {
 
-		const val PAGE_SWITCH_TAPS = "taps"
 		const val PAGE_SWITCH_VOLUME_KEYS = "volume"
 
 		const val TRACK_HISTORY = "history"
@@ -476,8 +514,11 @@ class AppSettings @Inject constructor(@ApplicationContext context: Context) {
 		const val KEY_GRID_SIZE = "grid_size"
 		const val KEY_REMOTE_SOURCES = "remote_sources"
 		const val KEY_LOCAL_STORAGE = "local_storage"
-		const val KEY_READER_SWITCHERS = "reader_switchers"
+		const val KEY_READER_DOUBLE_PAGES = "reader_double_pages"
 		const val KEY_READER_ZOOM_BUTTONS = "reader_zoom_buttons"
+		const val KEY_READER_CONTROL_LTR = "reader_taps_ltr"
+		const val KEY_READER_FULLSCREEN = "reader_fullscreen"
+		const val KEY_READER_VOLUME_BUTTONS = "reader_volume_buttons"
 		const val KEY_TRACKER_ENABLED = "tracker_enabled"
 		const val KEY_TRACKER_WIFI_ONLY = "tracker_wifi"
 		const val KEY_TRACK_SOURCES = "track_sources"
@@ -493,6 +534,7 @@ class AppSettings @Inject constructor(@ApplicationContext context: Context) {
 		const val KEY_READER_MODE = "reader_mode"
 		const val KEY_READER_MODE_DETECT = "reader_mode_detect"
 		const val KEY_APP_PASSWORD = "app_password"
+		const val KEY_APP_PASSWORD_NUMERIC = "app_password_num"
 		const val KEY_PROTECT_APP = "protect_app"
 		const val KEY_PROTECT_APP_BIOMETRIC = "protect_app_bio"
 		const val KEY_APP_VERSION = "app_version"
@@ -518,7 +560,9 @@ class AppSettings @Inject constructor(@ApplicationContext context: Context) {
 		const val KEY_SHIKIMORI = "shikimori"
 		const val KEY_ANILIST = "anilist"
 		const val KEY_MAL = "mal"
+		const val KEY_KITSU = "kitsu"
 		const val KEY_DOWNLOADS_WIFI = "downloads_wifi"
+		const val KEY_DOWNLOADS_FORMAT = "downloads_format"
 		const val KEY_ALL_FAVOURITES_VISIBLE = "all_favourites_visible"
 		const val KEY_DOH = "doh"
 		const val KEY_EXIT_CONFIRM = "exit_confirm"
@@ -530,12 +574,13 @@ class AppSettings @Inject constructor(@ApplicationContext context: Context) {
 		const val KEY_READER_BACKGROUND = "reader_background"
 		const val KEY_READER_SCREEN_ON = "reader_screen_on"
 		const val KEY_SHORTCUTS = "dynamic_shortcuts"
-		const val KEY_READER_TAPS_LTR = "reader_taps_ltr"
+		const val KEY_READER_TAP_ACTIONS = "reader_tap_actions"
 		const val KEY_READER_OPTIMIZE = "reader_optimize"
 		const val KEY_LOCAL_LIST_ORDER = "local_order"
 		const val KEY_HISTORY_ORDER = "history_order"
 		const val KEY_FAVORITES_ORDER = "fav_order"
 		const val KEY_WEBTOON_ZOOM = "webtoon_zoom"
+		const val KEY_WEBTOON_ZOOM_OUT = "webtoon_zoom_out"
 		const val KEY_PREFETCH_CONTENT = "prefetch_content"
 		const val KEY_APP_LOCALE = "app_locale"
 		const val KEY_LOGGING_ENABLED = "logging"
@@ -559,6 +604,7 @@ class AppSettings @Inject constructor(@ApplicationContext context: Context) {
 		const val KEY_DISABLE_NSFW = "no_nsfw"
 		const val KEY_RELATED_MANGA = "related_manga"
 		const val KEY_NAV_MAIN = "nav_main"
+		const val KEY_NAV_LABELS = "nav_labels"
 		const val KEY_32BIT_COLOR = "enhanced_colors"
 		const val KEY_SOURCES_ORDER = "sources_sort_order"
 		const val KEY_SOURCES_CATALOG = "sources_catalog"
@@ -568,8 +614,10 @@ class AppSettings @Inject constructor(@ApplicationContext context: Context) {
 		const val KEY_CF_GRAYSCALE = "cf_grayscale"
 		const val KEY_IGNORE_DOZE = "ignore_dose"
 		const val KEY_DETAILS_TAB = "details_tab"
-
-		// About
+		const val KEY_READING_TIME = "reading_time"
+		const val KEY_PAGES_SAVE_DIR = "pages_dir"
+		const val KEY_PAGES_SAVE_ASK = "pages_dir_ask"
+		const val KEY_STATS_ENABLED = "stats_on"
 		const val KEY_APP_UPDATE = "app_update"
 		const val KEY_APP_TRANSLATION = "about_app_translation"
 	}

app/src/main/kotlin/org/koitharu/kotatsu/core/prefs/DownloadFormat.kt

@@ -0,0 +1,8 @@
+package org.koitharu.kotatsu.core.prefs
+
+enum class DownloadFormat {
+
+	AUTOMATIC,
+	SINGLE_CBZ,
+	MULTIPLE_CBZ,
+}

app/src/main/kotlin/org/koitharu/kotatsu/core/prefs/NavItem.kt

@@ -4,13 +4,12 @@ import androidx.annotation.DrawableRes
 import androidx.annotation.IdRes
 import androidx.annotation.StringRes
 import org.koitharu.kotatsu.R
-import org.koitharu.kotatsu.list.ui.model.ListModel
 
 enum class NavItem(
 	@IdRes val id: Int,
 	@StringRes val title: Int,
 	@DrawableRes val icon: Int,
-) : ListModel {
+) {
 
 	HISTORY(R.id.nav_history, R.string.history, R.drawable.ic_history_selector),
 	FAVORITES(R.id.nav_favorites, R.string.favourites, R.drawable.ic_favourites_selector),
@@ -21,10 +20,6 @@ enum class NavItem(
 	BOOKMARKS(R.id.nav_bookmarks, R.string.bookmarks, R.drawable.ic_bookmark_selector),
 	;
 
-	override fun areItemsTheSame(other: ListModel): Boolean {
-		return other is NavItem && ordinal == other.ordinal
-	}
-
 	fun isAvailable(settings: AppSettings): Boolean = when (this) {
 		SUGGESTIONS -> settings.isSuggestionsEnabled
 		FEED -> settings.isTrackerEnabled

app/src/main/kotlin/org/koitharu/kotatsu/core/prefs/ReaderMode.kt

@@ -4,7 +4,9 @@ enum class ReaderMode(val id: Int) {
 
 	STANDARD(1),
 	REVERSED(3),
-	WEBTOON(2);
+	VERTICAL(4),
+	WEBTOON(2),
+	;
 
 	companion object {
 

app/src/main/kotlin/org/koitharu/kotatsu/core/ui/BaseActivity.kt

@@ -8,6 +8,7 @@ import android.os.Bundle
 import android.view.KeyEvent
 import android.view.View
 import android.view.ViewGroup
+import android.widget.Toast
 import androidx.annotation.CallSuper
 import androidx.appcompat.app.AppCompatActivity
 import androidx.appcompat.view.ActionMode
@@ -29,6 +30,7 @@ import org.koitharu.kotatsu.core.ui.util.ActionModeDelegate
 import org.koitharu.kotatsu.core.ui.util.BaseActivityEntryPoint
 import org.koitharu.kotatsu.core.ui.util.WindowInsetsDelegate
 import org.koitharu.kotatsu.core.util.ext.getThemeColor
+import org.koitharu.kotatsu.core.util.ext.isWebViewUnavailable
 
 @Suppress("LeakingThis")
 abstract class BaseActivity<B : ViewBinding> :
@@ -164,6 +166,21 @@ abstract class BaseActivity<B : ViewBinding> :
 		intent?.putExtra(EXTRA_DATA, intent.data)
 	}
 
+	protected fun setContentViewWebViewSafe(viewBindingProducer: () -> B): Boolean {
+		return try {
+			setContentView(viewBindingProducer())
+			true
+		} catch (e: Exception) {
+			if (e.isWebViewUnavailable()) {
+				Toast.makeText(this, R.string.web_view_unavailable, Toast.LENGTH_LONG).show()
+				finishAfterTransition()
+				false
+			} else {
+				throw e
+			}
+		}
+	}
+
 	companion object {
 
 		const val EXTRA_DATA = "data"

app/src/main/kotlin/org/koitharu/kotatsu/core/ui/BaseFullscreenActivity.kt

@@ -29,7 +29,6 @@ abstract class BaseFullscreenActivity<B : ViewBinding> :
 					WindowManager.LayoutParams.LAYOUT_IN_DISPLAY_CUTOUT_MODE_SHORT_EDGES
 			}
 		}
-		// insetsControllerCompat.systemBarsBehavior = WindowInsetsControllerCompat.BEHAVIOR_SHOW_TRANSIENT_BARS_BY_SWIPE
 		systemUiController.setSystemUiVisible(true)
 	}
 }

app/src/main/kotlin/org/koitharu/kotatsu/core/ui/BaseListAdapter.kt

@@ -10,6 +10,7 @@ import kotlinx.coroutines.flow.FlowCollector
 import org.koitharu.kotatsu.core.util.ContinuationResumeRunnable
 import org.koitharu.kotatsu.list.ui.ListModelDiffCallback
 import org.koitharu.kotatsu.list.ui.adapter.ListItemType
+import org.koitharu.kotatsu.list.ui.model.ListHeader
 import org.koitharu.kotatsu.list.ui.model.ListModel
 import kotlin.coroutines.suspendCoroutine
 
@@ -28,11 +29,23 @@ open class BaseListAdapter<T : ListModel> : AsyncListDifferDelegationAdapter<T>(
 		return this
 	}
 
-	fun addListListener(listListener: ListListener<T>) {
+	fun addListListener(listListener: ListListener<T>): BaseListAdapter<T> {
 		differ.addListListener(listListener)
+		return this
 	}
 
 	fun removeListListener(listListener: ListListener<T>) {
 		differ.removeListListener(listListener)
 	}
+
+	fun findHeader(position: Int): ListHeader? {
+		val snapshot = items
+		for (i in (0..position).reversed()) {
+			val item = snapshot.getOrNull(i) ?: continue
+			if (item is ListHeader) {
+				return item
+			}
+		}
+		return null
+	}
 }

app/src/main/kotlin/org/koitharu/kotatsu/core/ui/BaseViewModel.kt

@@ -68,6 +68,13 @@ abstract class BaseViewModel : ViewModel() {
 		errorEvent.call(error)
 	}
 
+	protected inline suspend fun <T> withLoading(block: () -> T): T = try {
+		loadingCounter.increment()
+		block()
+	} finally {
+		loadingCounter.decrement()
+	}
+
 	protected fun MutableStateFlow<Int>.increment() = update { it + 1 }
 
 	protected fun MutableStateFlow<Int>.decrement() = update { it - 1 }

app/src/main/kotlin/org/koitharu/kotatsu/core/ui/dialog/RecyclerViewAlertDialog.kt

@@ -68,6 +68,14 @@ class RecyclerViewAlertDialog private constructor(
 			return this
 		}
 
+		fun setNeutralButton(
+			@StringRes textId: Int,
+			listener: DialogInterface.OnClickListener,
+		): Builder<T> {
+			delegate.setNeutralButton(textId, listener)
+			return this
+		}
+
 		fun setCancelable(isCancelable: Boolean): Builder<T> {
 			delegate.setCancelable(isCancelable)
 			return this

app/src/main/kotlin/org/koitharu/kotatsu/core/ui/image/FaviconDrawable.kt

@@ -12,11 +12,10 @@ import android.graphics.RectF
 import android.graphics.drawable.Drawable
 import androidx.annotation.StyleRes
 import androidx.core.content.withStyledAttributes
-import androidx.core.graphics.ColorUtils
 import androidx.core.graphics.withClip
 import com.google.android.material.color.MaterialColors
 import org.koitharu.kotatsu.R
-import kotlin.math.absoluteValue
+import org.koitharu.kotatsu.core.util.KotatsuColors
 
 class FaviconDrawable(
 	context: Context,
@@ -44,7 +43,7 @@ class FaviconDrawable(
 		}
 		paint.textAlign = Paint.Align.CENTER
 		paint.isFakeBoldText = true
-		colorForeground = MaterialColors.harmonize(colorOfString(name), colorBackground)
+		colorForeground = MaterialColors.harmonize(KotatsuColors.random(name), colorBackground)
 	}
 
 	override fun draw(canvas: Canvas) {
@@ -104,9 +103,4 @@ class FaviconDrawable(
 		paint.getTextBounds(text, 0, text.length, tempRect)
 		return testTextSize * width / tempRect.width()
 	}
-
-	private fun colorOfString(str: String): Int {
-		val hue = (str.hashCode() % 360).absoluteValue.toFloat()
-		return ColorUtils.HSLToColor(floatArrayOf(hue, 0.5f, 0.5f))
-	}
 }

app/src/main/kotlin/org/koitharu/kotatsu/core/ui/list/decor/AbstractSelectionItemDecoration.kt

@@ -91,7 +91,7 @@ abstract class AbstractSelectionItemDecoration : RecyclerView.ItemDecoration() {
 		canvas.restoreToCount(checkpoint)
 	}
 
-	protected open fun getItemId(parent: RecyclerView, child: View) = parent.getChildItemId(child)
+	abstract fun getItemId(parent: RecyclerView, child: View): Long
 
 	protected open fun onDrawBackground(
 		canvas: Canvas,

app/src/main/kotlin/org/koitharu/kotatsu/core/ui/util/ReversibleActionObserver.kt

@@ -7,12 +7,16 @@ import org.koitharu.kotatsu.R
 
 class ReversibleActionObserver(
 	private val snackbarHost: View,
+	private val snackbarAnchor: View? = null,
 ) : FlowCollector<ReversibleAction> {
 
 	override suspend fun emit(value: ReversibleAction) {
 		val handle = value.handle
 		val length = if (handle == null) Snackbar.LENGTH_SHORT else Snackbar.LENGTH_LONG
 		val snackbar = Snackbar.make(snackbarHost, value.stringResId, length)
+		if (snackbarAnchor?.isShown == true) {
+			snackbar.anchorView = snackbarAnchor
+		}
 		if (handle != null) {
 			snackbar.setAction(R.string.undo) { handle.reverseAsync() }
 		}

app/src/main/kotlin/org/koitharu/kotatsu/core/ui/widgets/ChipsView.kt

@@ -110,7 +110,7 @@ class ChipsView @JvmOverloads constructor(
 		chip.isChipIconVisible = false
 		chip.isCloseIconVisible = onChipCloseClickListener != null
 		chip.setOnCloseIconClickListener(chipOnCloseListener)
-		chip.setEnsureMinTouchTargetSize(false)
+		chip.setEnsureMinTouchTargetSize(false) // TODO remove
 		chip.setOnClickListener(chipOnClickListener)
 		addView(chip)
 		return chip

app/src/main/kotlin/org/koitharu/kotatsu/core/ui/widgets/CubicSlider.kt

@@ -1,8 +1,8 @@
 package org.koitharu.kotatsu.core.ui.widgets
 
 import android.content.Context
-import android.util.ArrayMap
 import android.util.AttributeSet
+import androidx.collection.MutableScatterMap
 import com.google.android.material.slider.Slider
 import kotlin.math.cbrt
 import kotlin.math.pow
@@ -12,7 +12,7 @@ class CubicSlider @JvmOverloads constructor(
 	attrs: AttributeSet? = null,
 ) : Slider(context, attrs) {
 
-	private val changeListeners = ArrayMap<OnChangeListener, OnChangeListenerMapper>(1)
+	private val changeListeners = MutableScatterMap<OnChangeListener, OnChangeListenerMapper>(1)
 
 	override fun setValue(value: Float) {
 		super.setValue(value.unmap())

app/src/main/kotlin/org/koitharu/kotatsu/core/ui/widgets/PieChart.kt

@@ -1,397 +0,0 @@
-package org.koitharu.kotatsu.core.ui.widgets
-
-import android.animation.ValueAnimator
-import android.content.Context
-import android.graphics.Canvas
-import android.graphics.Color
-import android.graphics.CornerPathEffect
-import android.graphics.Paint
-import android.graphics.Rect
-import android.graphics.RectF
-import android.graphics.Typeface
-import android.os.Build
-import android.os.Parcelable
-import android.text.Layout
-import android.text.StaticLayout
-import android.text.TextDirectionHeuristic
-import android.text.TextDirectionHeuristics
-import android.text.TextPaint
-import android.util.AttributeSet
-import android.view.View
-import androidx.annotation.RequiresApi
-import androidx.interpolator.view.animation.FastOutSlowInInterpolator
-import org.koitharu.kotatsu.R
-import org.koitharu.kotatsu.core.util.ext.draw
-import org.koitharu.kotatsu.core.util.ext.getAnimationDuration
-import org.koitharu.kotatsu.core.util.ext.resolveDp
-import org.koitharu.kotatsu.core.util.ext.resolveSp
-
-class PieChart @JvmOverloads constructor(
-	context: Context,
-	attrs: AttributeSet? = null,
-	defStyleAttr: Int = 0
-) : View(context, attrs, defStyleAttr), PieChartInterface {
-
-	private var marginTextFirst: Float = context.resources.resolveDp(DEFAULT_MARGIN_TEXT_1)
-	private var marginTextSecond: Float = context.resources.resolveDp(DEFAULT_MARGIN_TEXT_2)
-	private var marginTextThird: Float = context.resources.resolveDp(DEFAULT_MARGIN_TEXT_3)
-	private var marginSmallCircle: Float = context.resources.resolveDp(DEFAULT_MARGIN_SMALL_CIRCLE)
-	private val marginText: Float = marginTextFirst + marginTextSecond
-	private val circleRect = RectF()
-	private var circleStrokeWidth: Float = context.resources.resolveDp(6f)
-	private var circleRadius: Float = 0f
-	private var circlePadding: Float = context.resources.resolveDp(8f)
-	private var circlePaintRoundSize: Boolean = true
-	private var circleSectionSpace: Float = 3f
-	private var circleCenterX: Float = 0f
-	private var circleCenterY: Float = 0f
-	private var numberTextPaint: TextPaint = TextPaint()
-	private var descriptionTextPain: TextPaint = TextPaint()
-	private var amountTextPaint: TextPaint = TextPaint()
-	private var textStartX: Float = 0f
-	private var textStartY: Float = 0f
-	private var textHeight: Int = 0
-	private var textCircleRadius: Float = context.resources.resolveDp(4f)
-	private var textAmountStr: String = ""
-	private var textAmountY: Float = 0f
-	private var textAmountXNumber: Float = 0f
-	private var textAmountXDescription: Float = 0f
-	private var textAmountYDescription: Float = 0f
-	private var totalAmount: Int = 0
-	private var pieChartColors: List<String> = listOf()
-	private var percentageCircleList: List<PieChartModel> = listOf()
-	private var textRowList: MutableList<StaticLayout> = mutableListOf()
-	private var dataList: List<Pair<Int, String>> = listOf()
-	private var animationSweepAngle: Int = 0
-
-	init {
-		var textAmountSize: Float = context.resources.resolveSp(22f)
-		var textNumberSize: Float = context.resources.resolveSp(20f)
-		var textDescriptionSize: Float = context.resources.resolveSp(14f)
-		var textAmountColor: Int = Color.WHITE
-		var textNumberColor: Int = Color.WHITE
-		var textDescriptionColor: Int = Color.GRAY
-
-		if (attrs != null) {
-			val typeArray = context.obtainStyledAttributes(attrs, R.styleable.PieChart)
-
-			val colorResId = typeArray.getResourceId(R.styleable.PieChart_pieChartColors, 0)
-			pieChartColors = typeArray.resources.getStringArray(colorResId).toList()
-
-			marginTextFirst = typeArray.getDimension(R.styleable.PieChart_pieChartMarginTextFirst, marginTextFirst)
-			marginTextSecond = typeArray.getDimension(R.styleable.PieChart_pieChartMarginTextSecond, marginTextSecond)
-			marginTextThird = typeArray.getDimension(R.styleable.PieChart_pieChartMarginTextThird, marginTextThird)
-			marginSmallCircle =
-				typeArray.getDimension(R.styleable.PieChart_pieChartMarginSmallCircle, marginSmallCircle)
-
-			circleStrokeWidth =
-				typeArray.getDimension(R.styleable.PieChart_pieChartCircleStrokeWidth, circleStrokeWidth)
-			circlePadding = typeArray.getDimension(R.styleable.PieChart_pieChartCirclePadding, circlePadding)
-			circlePaintRoundSize =
-				typeArray.getBoolean(R.styleable.PieChart_pieChartCirclePaintRoundSize, circlePaintRoundSize)
-			circleSectionSpace = typeArray.getFloat(R.styleable.PieChart_pieChartCircleSectionSpace, circleSectionSpace)
-
-			textCircleRadius = typeArray.getDimension(R.styleable.PieChart_pieChartTextCircleRadius, textCircleRadius)
-			textAmountSize = typeArray.getDimension(R.styleable.PieChart_pieChartTextAmountSize, textAmountSize)
-			textNumberSize = typeArray.getDimension(R.styleable.PieChart_pieChartTextNumberSize, textNumberSize)
-			textDescriptionSize =
-				typeArray.getDimension(R.styleable.PieChart_pieChartTextDescriptionSize, textDescriptionSize)
-			textAmountColor = typeArray.getColor(R.styleable.PieChart_pieChartTextAmountColor, textAmountColor)
-			textNumberColor = typeArray.getColor(R.styleable.PieChart_pieChartTextNumberColor, textNumberColor)
-			textDescriptionColor =
-				typeArray.getColor(R.styleable.PieChart_pieChartTextDescriptionColor, textDescriptionColor)
-			textAmountStr = typeArray.getString(R.styleable.PieChart_pieChartTextAmount) ?: ""
-
-			typeArray.recycle()
-		}
-
-		circlePadding += circleStrokeWidth
-
-		// Инициализация кистей View
-		initPaints(amountTextPaint, textAmountSize, textAmountColor)
-		initPaints(numberTextPaint, textNumberSize, textNumberColor)
-		initPaints(descriptionTextPain, textDescriptionSize, textDescriptionColor, true)
-	}
-
-	@RequiresApi(Build.VERSION_CODES.M)
-	override fun onMeasure(widthMeasureSpec: Int, heightMeasureSpec: Int) {
-		textRowList.clear()
-
-		val initSizeWidth = resolveDefaultSize(widthMeasureSpec, DEFAULT_VIEW_SIZE_WIDTH)
-
-		val textTextWidth = (initSizeWidth * TEXT_WIDTH_PERCENT)
-		val initSizeHeight = calculateViewHeight(heightMeasureSpec, textTextWidth.toInt())
-
-		textStartX = initSizeWidth - textTextWidth.toFloat()
-		textStartY = initSizeHeight.toFloat() / 2 - textHeight / 2
-
-		calculateCircleRadius(initSizeWidth, initSizeHeight)
-
-		setMeasuredDimension(initSizeWidth, initSizeHeight)
-	}
-
-	override fun onDraw(canvas: Canvas) {
-		super.onDraw(canvas)
-
-		drawCircle(canvas)
-		drawText(canvas)
-	}
-
-	override fun onRestoreInstanceState(state: Parcelable?) {
-		val pieChartState = state as? PieChartState
-		super.onRestoreInstanceState(pieChartState?.superState ?: state)
-
-		dataList = pieChartState?.dataList ?: listOf()
-	}
-
-	override fun onSaveInstanceState(): Parcelable {
-		val superState = super.onSaveInstanceState()
-		return PieChartState(superState, dataList)
-	}
-
-	override fun setDataChart(list: List<Pair<Int, String>>) {
-		dataList = list
-		calculatePercentageOfData()
-	}
-
-	override fun startAnimation() {
-		val animator = ValueAnimator.ofInt(0, 360).apply {
-			duration = context.getAnimationDuration(android.R.integer.config_longAnimTime)
-			interpolator = FastOutSlowInInterpolator()
-			addUpdateListener { valueAnimator ->
-				animationSweepAngle = valueAnimator.animatedValue as Int
-				invalidate()
-			}
-		}
-		animator.start()
-	}
-
-	private fun drawCircle(canvas: Canvas) {
-		for (percent in percentageCircleList) {
-			if (animationSweepAngle > percent.percentToStartAt + percent.percentOfCircle) {
-				canvas.drawArc(circleRect, percent.percentToStartAt, percent.percentOfCircle, false, percent.paint)
-			} else if (animationSweepAngle > percent.percentToStartAt) {
-				canvas.drawArc(
-					circleRect,
-					percent.percentToStartAt,
-					animationSweepAngle - percent.percentToStartAt,
-					false,
-					percent.paint,
-				)
-			}
-		}
-	}
-
-	private fun drawText(canvas: Canvas) {
-		var textBuffY = textStartY
-		textRowList.forEachIndexed { index, staticLayout ->
-			if (index % 2 == 0) {
-				staticLayout.draw(canvas, textStartX + marginSmallCircle + textCircleRadius, textBuffY)
-				canvas.drawCircle(
-					textStartX + marginSmallCircle / 2,
-					textBuffY + staticLayout.height / 2 + textCircleRadius / 2,
-					textCircleRadius,
-					Paint().apply { color = Color.parseColor(pieChartColors[(index / 2) % pieChartColors.size]) },
-				)
-				textBuffY += staticLayout.height + marginTextFirst
-			} else {
-				staticLayout.draw(canvas, textStartX, textBuffY)
-				textBuffY += staticLayout.height + marginTextSecond
-			}
-		}
-
-		canvas.drawText(totalAmount.toString(), textAmountXNumber, textAmountY, amountTextPaint)
-		canvas.drawText(textAmountStr, textAmountXDescription, textAmountYDescription, descriptionTextPain)
-	}
-
-	private fun initPaints(textPaint: TextPaint, textSize: Float, textColor: Int, isDescription: Boolean = false) {
-		textPaint.color = textColor
-		textPaint.textSize = textSize
-		textPaint.isAntiAlias = true
-
-		if (!isDescription) textPaint.typeface = Typeface.create(Typeface.DEFAULT, Typeface.BOLD)
-	}
-
-	private fun resolveDefaultSize(spec: Int, defValue: Int): Int {
-		return when (MeasureSpec.getMode(spec)) {
-			MeasureSpec.UNSPECIFIED -> resources.resolveDp(defValue)
-			else -> MeasureSpec.getSize(spec)
-		}
-	}
-
-	@RequiresApi(Build.VERSION_CODES.M)
-	private fun calculateViewHeight(heightMeasureSpec: Int, textWidth: Int): Int {
-		val initSizeHeight = resolveDefaultSize(heightMeasureSpec, DEFAULT_VIEW_SIZE_HEIGHT)
-		textHeight = (dataList.size * marginText + getTextViewHeight(textWidth)).toInt()
-
-		val textHeightWithPadding = textHeight + paddingTop + paddingBottom
-		return if (textHeightWithPadding > initSizeHeight) textHeightWithPadding else initSizeHeight
-	}
-
-	private fun calculateCircleRadius(width: Int, height: Int) {
-		val circleViewWidth = (width * CIRCLE_WIDTH_PERCENT)
-		circleRadius = if (circleViewWidth > height) {
-			(height.toFloat() - circlePadding) / 2
-		} else {
-			circleViewWidth.toFloat() / 2
-		}
-
-		with(circleRect) {
-			left = circlePadding
-			top = height / 2 - circleRadius
-			right = circleRadius * 2 + circlePadding
-			bottom = height / 2 + circleRadius
-		}
-
-		circleCenterX = (circleRadius * 2 + circlePadding + circlePadding) / 2
-		circleCenterY = (height / 2 + circleRadius + (height / 2 - circleRadius)) / 2
-
-		textAmountY = circleCenterY
-
-		val sizeTextAmountNumber = getWidthOfAmountText(
-			totalAmount.toString(),
-			amountTextPaint,
-		)
-
-		textAmountXNumber = circleCenterX - sizeTextAmountNumber.width() / 2
-		textAmountXDescription = circleCenterX - getWidthOfAmountText(textAmountStr, descriptionTextPain).width() / 2
-		textAmountYDescription = circleCenterY + sizeTextAmountNumber.height() + marginTextThird
-	}
-
-	@RequiresApi(Build.VERSION_CODES.M)
-	private fun getTextViewHeight(maxWidth: Int): Int {
-		var textHeight = 0
-		dataList.forEach {
-			val textLayoutNumber = getMultilineText(
-				text = it.first.toString(),
-				textPaint = numberTextPaint,
-				width = maxWidth,
-			)
-			val textLayoutDescription = getMultilineText(
-				text = it.second,
-				textPaint = descriptionTextPain,
-				width = maxWidth,
-			)
-			textRowList.apply {
-				add(textLayoutNumber)
-				add(textLayoutDescription)
-			}
-			textHeight += textLayoutNumber.height + textLayoutDescription.height
-		}
-
-		return textHeight
-	}
-
-	private fun calculatePercentageOfData() {
-		totalAmount = dataList.fold(0) { res, value -> res + value.first }
-
-		var startAt = circleSectionSpace
-		percentageCircleList = dataList.mapIndexed { index, pair ->
-			var percent = pair.first * 100 / totalAmount.toFloat() - circleSectionSpace
-			percent = if (percent < 0f) 0f else percent
-
-			val resultModel = PieChartModel(
-				percentOfCircle = percent,
-				percentToStartAt = startAt,
-				colorOfLine = Color.parseColor(pieChartColors[index % pieChartColors.size]),
-				stroke = circleStrokeWidth,
-				paintRound = circlePaintRoundSize,
-			)
-			if (percent != 0f) startAt += percent + circleSectionSpace
-			resultModel
-		}
-	}
-
-	private fun getWidthOfAmountText(text: String, textPaint: TextPaint): Rect {
-		val bounds = Rect()
-		textPaint.getTextBounds(text, 0, text.length, bounds)
-		return bounds
-	}
-
-	@RequiresApi(Build.VERSION_CODES.M)
-	private fun getMultilineText(
-		text: CharSequence,
-		textPaint: TextPaint,
-		width: Int,
-		start: Int = 0,
-		end: Int = text.length,
-		alignment: Layout.Alignment = Layout.Alignment.ALIGN_NORMAL,
-		textDir: TextDirectionHeuristic = TextDirectionHeuristics.LTR,
-		spacingMult: Float = 1f,
-		spacingAdd: Float = 0f
-	): StaticLayout {
-
-		return StaticLayout.Builder
-			.obtain(text, start, end, textPaint, width)
-			.setAlignment(alignment)
-			.setTextDirection(textDir)
-			.setLineSpacing(spacingAdd, spacingMult)
-			.build()
-	}
-
-	companion object {
-		private const val DEFAULT_MARGIN_TEXT_1 = 2f
-		private const val DEFAULT_MARGIN_TEXT_2 = 10f
-		private const val DEFAULT_MARGIN_TEXT_3 = 2f
-		private const val DEFAULT_MARGIN_SMALL_CIRCLE = 12f
-
-		private const val TEXT_WIDTH_PERCENT = 0.40
-		private const val CIRCLE_WIDTH_PERCENT = 0.50
-
-		const val DEFAULT_VIEW_SIZE_HEIGHT = 150
-		const val DEFAULT_VIEW_SIZE_WIDTH = 250
-	}
-}
-
-interface PieChartInterface {
-
-	fun setDataChart(list: List<Pair<Int, String>>)
-
-	fun startAnimation()
-}
-
-data class PieChartModel(
-	var percentOfCircle: Float = 0f,
-	var percentToStartAt: Float = 0f,
-	var colorOfLine: Int = 0,
-	var stroke: Float = 0f,
-	var paint: Paint = Paint(),
-	var paintRound: Boolean = true
-) {
-
-	init {
-		if (percentOfCircle < 0 || percentOfCircle > 100) {
-			percentOfCircle = 100f
-		}
-
-		percentOfCircle = 360 * percentOfCircle / 100
-
-		if (percentToStartAt < 0 || percentToStartAt > 100) {
-			percentToStartAt = 0f
-		}
-
-		percentToStartAt = 360 * percentToStartAt / 100
-
-		if (colorOfLine == 0) {
-			colorOfLine = Color.parseColor("#000000")
-		}
-
-		paint = Paint()
-		paint.color = colorOfLine
-		paint.isAntiAlias = true
-		paint.style = Paint.Style.STROKE
-		paint.strokeWidth = stroke
-		paint.isDither = true
-
-		if (paintRound) {
-			paint.strokeJoin = Paint.Join.ROUND
-			paint.strokeCap = Paint.Cap.ROUND
-			paint.pathEffect = CornerPathEffect(8f)
-		}
-	}
-}
-
-class PieChartState(
-	superSavedState: Parcelable?,
-	val dataList: List<Pair<Int, String>>
-) : View.BaseSavedState(superSavedState), Parcelable

app/src/main/kotlin/org/koitharu/kotatsu/core/ui/widgets/SegmentedBarView.kt

@@ -11,6 +11,7 @@ import android.view.View
 import android.view.ViewOutlineProvider
 import androidx.annotation.ColorInt
 import androidx.annotation.FloatRange
+import androidx.collection.MutableFloatList
 import androidx.interpolator.view.animation.FastOutSlowInInterpolator
 import org.koitharu.kotatsu.core.util.ext.getAnimationDuration
 import org.koitharu.kotatsu.core.util.ext.isAnimationsEnabled
@@ -25,7 +26,7 @@ class SegmentedBarView @JvmOverloads constructor(
 
 	private val paint = Paint(Paint.ANTI_ALIAS_FLAG)
 	private val segmentsData = ArrayList<Segment>()
-	private val segmentsSizes = ArrayList<Float>()
+	private val segmentsSizes = MutableFloatList()
 	private var cornerSize = 0f
 	private var scaleFactor = 1f
 	private var scaleAnimator: ValueAnimator? = null

app/src/main/kotlin/org/koitharu/kotatsu/core/util/GridTouchHelper.kt

@@ -1,70 +0,0 @@
-package org.koitharu.kotatsu.core.util
-
-import android.content.Context
-import android.view.GestureDetector
-import android.view.MotionEvent
-import kotlin.math.roundToInt
-
-class GridTouchHelper(
-	context: Context,
-	private val listener: OnGridTouchListener,
-) : GestureDetector.SimpleOnGestureListener() {
-
-	private val detector = GestureDetector(context, this)
-	private val width = context.resources.displayMetrics.widthPixels
-	private val height = context.resources.displayMetrics.heightPixels
-	private var isDispatching = false
-
-	init {
-		detector.setIsLongpressEnabled(true)
-		detector.setOnDoubleTapListener(this)
-	}
-
-	fun dispatchTouchEvent(event: MotionEvent) {
-		if (event.actionMasked == MotionEvent.ACTION_DOWN) {
-			isDispatching = listener.onProcessTouch(event.rawX.toInt(), event.rawY.toInt())
-		}
-		detector.onTouchEvent(event)
-	}
-
-	override fun onSingleTapConfirmed(event: MotionEvent): Boolean {
-		if (!isDispatching) {
-			return true
-		}
-		val xIndex = (event.rawX * 2f / width).roundToInt()
-		val yIndex = (event.rawY * 2f / height).roundToInt()
-		listener.onGridTouch(
-			when (xIndex) {
-				0 -> AREA_LEFT
-				1 -> {
-					when (yIndex) {
-						0 -> AREA_TOP
-						1 -> AREA_CENTER
-						2 -> AREA_BOTTOM
-						else -> return false
-					}
-				}
-
-				2 -> AREA_RIGHT
-				else -> return false
-			},
-		)
-		return true
-	}
-
-	companion object {
-
-		const val AREA_CENTER = 1
-		const val AREA_LEFT = 2
-		const val AREA_RIGHT = 3
-		const val AREA_TOP = 4
-		const val AREA_BOTTOM = 5
-	}
-
-	interface OnGridTouchListener {
-
-		fun onGridTouch(area: Int)
-
-		fun onProcessTouch(rawX: Int, rawY: Int): Boolean
-	}
-}

app/src/main/kotlin/org/koitharu/kotatsu/core/util/KotatsuColors.kt

@@ -0,0 +1,55 @@
+package org.koitharu.kotatsu.core.util
+
+import android.content.Context
+import androidx.annotation.AttrRes
+import androidx.annotation.ColorInt
+import androidx.core.graphics.ColorUtils
+import com.google.android.material.R
+import com.google.android.material.color.MaterialColors
+import org.koitharu.kotatsu.core.util.ext.getThemeColor
+import org.koitharu.kotatsu.parsers.model.Manga
+import kotlin.math.absoluteValue
+
+object KotatsuColors {
+
+	@ColorInt
+	fun segmentColor(context: Context, @AttrRes resId: Int): Int {
+		val colorHex = String.format("%06x", context.getThemeColor(resId))
+		val hue = getHue(colorHex)
+		val color = ColorUtils.HSLToColor(floatArrayOf(hue, 0.5f, 0.5f))
+		val backgroundColor = context.getThemeColor(R.attr.colorSurfaceContainerHigh)
+		return MaterialColors.harmonize(color, backgroundColor)
+	}
+
+	@ColorInt
+	fun random(seed: Any): Int {
+		val hue = (seed.hashCode() % 360).absoluteValue.toFloat()
+		return ColorUtils.HSLToColor(floatArrayOf(hue, 0.5f, 0.5f))
+	}
+
+	@ColorInt
+	fun ofManga(context: Context, manga: Manga?): Int {
+		val color = if (manga != null) {
+			val hue = (manga.id.absoluteValue % 360).toFloat()
+			ColorUtils.HSLToColor(floatArrayOf(hue, 0.5f, 0.5f))
+		} else {
+			context.getThemeColor(R.attr.colorSurface)
+		}
+		val backgroundColor = context.getThemeColor(R.attr.colorSurfaceContainerHigh)
+		return MaterialColors.harmonize(color, backgroundColor)
+	}
+
+	private fun getHue(hex: String): Float {
+		val r = (hex.substring(0, 2).toInt(16)).toFloat()
+		val g = (hex.substring(2, 4).toInt(16)).toFloat()
+		val b = (hex.substring(4, 6).toInt(16)).toFloat()
+
+		var hue = 0F
+		if ((r >= g) && (g >= b)) {
+			hue = 60 * (g - b) / (r - b)
+		} else if ((g > r) && (r >= b)) {
+			hue = 60 * (2 - (r - b) / (g - b))
+		}
+		return hue
+	}
+}

app/src/main/kotlin/org/koitharu/kotatsu/core/util/ext/Android.kt

@@ -27,7 +27,6 @@ import android.provider.Settings
 import android.view.View
 import android.view.ViewPropertyAnimator
 import android.view.Window
-import android.widget.Toast
 import androidx.activity.result.ActivityResultLauncher
 import androidx.annotation.IntegerRes
 import androidx.annotation.WorkerThread
@@ -216,21 +215,6 @@ fun Context.findActivity(): Activity? = when (this) {
 	else -> null
 }
 
-inline fun Activity.catchingWebViewUnavailability(block: () -> Unit): Boolean {
-	return try {
-		block()
-		true
-	} catch (e: Exception) {
-		if (e.isWebViewUnavailable()) {
-			Toast.makeText(this, R.string.web_view_unavailable, Toast.LENGTH_LONG).show()
-			finishAfterTransition()
-			false
-		} else {
-			throw e
-		}
-	}
-}
-
 fun Context.checkNotificationPermission(): Boolean = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) {
 	ContextCompat.checkSelfPermission(this, Manifest.permission.POST_NOTIFICATIONS) == PackageManager.PERMISSION_GRANTED
 } else {

app/src/main/kotlin/org/koitharu/kotatsu/core/util/ext/Bundle.kt

@@ -24,11 +24,15 @@ inline fun <reified T : Parcelable> Intent.getParcelableExtraCompat(key: String)
 }
 
 inline fun <reified T : Serializable> Intent.getSerializableExtraCompat(key: String): T? {
-	return getSerializableExtra(key) as T?
+	return if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.UPSIDE_DOWN_CAKE) {
+		getSerializableExtra(key, T::class.java)
+	} else {
+		getSerializableExtra(key) as T?
+	}
 }
 
 inline fun <reified T : Serializable> Bundle.getSerializableCompat(key: String): T? {
-	return if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) {
+	return if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.UPSIDE_DOWN_CAKE) {
 		getSerializable(key, T::class.java)
 	} else {
 		getSerializable(key) as T?

app/src/main/kotlin/org/koitharu/kotatsu/core/util/ext/Coil.kt

@@ -25,7 +25,7 @@ fun ImageView.newImageRequest(lifecycleOwner: LifecycleOwner, data: Any?): Image
 	}
 	// disposeImageRequest()
 	return ImageRequest.Builder(context)
-		.data(data)
+		.data(data?.takeUnless { it == "" })
 		.lifecycle(lifecycleOwner)
 		.crossfade(context)
 		.target(this)

app/src/main/kotlin/org/koitharu/kotatsu/core/util/ext/File.kt

@@ -19,6 +19,7 @@ import java.nio.file.attribute.BasicFileAttributes
 import java.util.zip.ZipEntry
 import java.util.zip.ZipFile
 import kotlin.io.path.ExperimentalPathApi
+import kotlin.io.path.PathWalkOption
 import kotlin.io.path.readAttributes
 import kotlin.io.path.walk
 
@@ -72,7 +73,7 @@ fun ContentResolver.resolveName(uri: Uri): String? {
 }
 
 suspend fun File.computeSize(): Long = runInterruptible(Dispatchers.IO) {
-	walkCompat().sumOf { it.length() }
+	walkCompat(includeDirectories = false).sumOf { it.length() }
 }
 
 fun File.children() = FileSequence(this)
@@ -87,10 +88,16 @@ val File.creationTime
 	}
 
 @OptIn(ExperimentalPathApi::class)
-fun File.walkCompat() = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+fun File.walkCompat(includeDirectories: Boolean): Sequence<File> = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
 	// Use lazy loading on Android 8.0 and later
-	toPath().walk().map { it.toFile() }
+	val walk = if (includeDirectories) {
+		toPath().walk(PathWalkOption.INCLUDE_DIRECTORIES)
+	} else {
+		toPath().walk()
+	}
+	walk.map { it.toFile() }
 } else {
 	// Directories are excluded by default in Path.walk(), so do it here as well
-	walk().filter { it.isFile }
+	val walk = walk()
+	if (includeDirectories) walk else walk.filter { it.isFile }
 }

app/src/main/kotlin/org/koitharu/kotatsu/core/util/ext/Flow.kt

@@ -11,8 +11,10 @@ import kotlinx.coroutines.flow.flow
 import kotlinx.coroutines.flow.map
 import kotlinx.coroutines.flow.onCompletion
 import kotlinx.coroutines.flow.onEach
+import kotlinx.coroutines.flow.transform
 import kotlinx.coroutines.flow.transformLatest
 import org.koitharu.kotatsu.R
+import java.util.concurrent.atomic.AtomicInteger
 
 fun <T> Flow<T>.onFirst(action: suspend (T) -> Unit): Flow<T> {
 	var isFirstCall = true
@@ -37,6 +39,14 @@ fun <T> Flow<T>.onEachWhile(action: suspend (T) -> Boolean): Flow<T> {
 	}
 }
 
+fun <T> Flow<T>.onEachIndexed(action: suspend (index: Int, T) -> Unit): Flow<T> {
+	val counter = AtomicInteger(0)
+	return transform { value ->
+		action(counter.getAndIncrement(), value)
+		return@transform emit(value)
+	}
+}
+
 inline fun <T, R> Flow<List<T>>.mapItems(crossinline transform: (T) -> R): Flow<List<R>> {
 	return map { list -> list.map(transform) }
 }

app/src/main/kotlin/org/koitharu/kotatsu/core/util/ext/Throwable.kt

@@ -2,7 +2,6 @@ package org.koitharu.kotatsu.core.util.ext
 
 import android.content.ActivityNotFoundException
 import android.content.res.Resources
-import android.util.AndroidRuntimeException
 import androidx.annotation.DrawableRes
 import androidx.collection.arraySetOf
 import coil.network.HttpException
@@ -115,8 +114,8 @@ private val reportableExceptions = arraySetOf<Class<*>>(
 )
 
 fun Throwable.isWebViewUnavailable(): Boolean {
-	return (this is AndroidRuntimeException && message?.contains("WebView") == true) ||
-		cause?.isWebViewUnavailable() == true
+	val trace = stackTraceToString()
+	return trace.contains("android.webkit.WebView.<init>")
 }
 
 @Suppress("FunctionName")

app/src/main/kotlin/org/koitharu/kotatsu/core/util/ext/View.kt

@@ -1,15 +1,14 @@
 package org.koitharu.kotatsu.core.util.ext
 
-import android.app.Activity
 import android.graphics.Rect
 import android.os.Build
 import android.view.View
 import android.view.View.MeasureSpec
 import android.view.ViewGroup
-import android.view.inputmethod.InputMethodManager
 import android.widget.Checkable
 import androidx.appcompat.widget.ActionMenuView
 import androidx.appcompat.widget.Toolbar
+import androidx.core.view.SoftwareKeyboardControllerCompat
 import androidx.core.view.children
 import androidx.core.view.descendants
 import androidx.core.view.isVisible
@@ -24,13 +23,11 @@ import com.google.android.material.tabs.TabLayout
 import kotlin.math.roundToInt
 
 fun View.hideKeyboard() {
-	val imm = context.getSystemService(Activity.INPUT_METHOD_SERVICE) as InputMethodManager
-	imm.hideSoftInputFromWindow(this.windowToken, 0)
+	SoftwareKeyboardControllerCompat(this).hide()
 }
 
 fun View.showKeyboard() {
-	val imm = context.getSystemService(Activity.INPUT_METHOD_SERVICE) as InputMethodManager
-	imm.showSoftInput(this, 0)
+	SoftwareKeyboardControllerCompat(this).show()
 }
 
 fun View.hasGlobalPoint(x: Int, y: Int): Boolean {

app/src/main/kotlin/org/koitharu/kotatsu/core/util/progress/TimeLeftEstimator.kt

@@ -1,6 +1,8 @@
 package org.koitharu.kotatsu.core.util.progress
 
 import android.os.SystemClock
+import androidx.collection.IntList
+import androidx.collection.MutableIntList
 import java.util.concurrent.TimeUnit
 import kotlin.math.roundToInt
 import kotlin.math.roundToLong
@@ -10,7 +12,7 @@ private const val NO_TIME = -1L
 
 class TimeLeftEstimator {
 
-	private var times = ArrayList<Int>()
+	private var times = MutableIntList()
 	private var lastTick: Tick? = null
 	private val tooLargeTime = TimeUnit.DAYS.toMillis(1)
 
@@ -50,6 +52,15 @@ class TimeLeftEstimator {
 		return if (etl == NO_TIME) NO_TIME else System.currentTimeMillis() + etl
 	}
 
+	private fun IntList.average(): Double {
+		if (isEmpty()) {
+			return 0.0
+		}
+		var acc = 0L
+		forEach { acc += it }
+		return acc / size.toDouble()
+	}
+
 	private class Tick(
 		@JvmField val value: Int,
 		@JvmField val total: Int,

app/src/main/kotlin/org/koitharu/kotatsu/details/data/ReadingTime.kt

@@ -0,0 +1,22 @@
+package org.koitharu.kotatsu.details.data
+
+import android.content.res.Resources
+import org.koitharu.kotatsu.R
+
+data class ReadingTime(
+	val minutes: Int,
+	val hours: Int,
+	val isContinue: Boolean,
+) {
+
+	fun format(resources: Resources): String = when {
+		hours == 0 && minutes == 0 -> resources.getString(R.string.less_than_minute)
+		hours == 0 -> resources.getQuantityString(R.plurals.minutes, minutes, minutes)
+		minutes == 0 -> resources.getQuantityString(R.plurals.hours, hours, hours)
+		else -> resources.getString(
+			R.string.remaining_time_pattern,
+			resources.getQuantityString(R.plurals.hours, hours, hours),
+			resources.getQuantityString(R.plurals.minutes, minutes, minutes),
+		)
+	}
+}

app/src/main/kotlin/org/koitharu/kotatsu/details/domain/ReadingTimeUseCase.kt

@@ -0,0 +1,53 @@
+package org.koitharu.kotatsu.details.domain
+
+import org.koitharu.kotatsu.core.model.MangaHistory
+import org.koitharu.kotatsu.core.model.findById
+import org.koitharu.kotatsu.core.prefs.AppSettings
+import org.koitharu.kotatsu.details.data.MangaDetails
+import org.koitharu.kotatsu.details.data.ReadingTime
+import org.koitharu.kotatsu.stats.data.StatsRepository
+import java.util.concurrent.TimeUnit
+import javax.inject.Inject
+import kotlin.math.roundToInt
+
+class ReadingTimeUseCase @Inject constructor(
+	private val settings: AppSettings,
+	private val statsRepository: StatsRepository,
+) {
+
+	suspend fun invoke(manga: MangaDetails?, branch: String?, history: MangaHistory?): ReadingTime? {
+		if (!settings.isReadingTimeEstimationEnabled) {
+			return null
+		}
+		val chapters = manga?.chapters?.get(branch)
+		if (chapters.isNullOrEmpty()) {
+			return null
+		}
+		val isOnHistoryBranch = history != null && chapters.findById(history.chapterId) != null
+		// Impossible task, I guess. Good luck on this.
+		var averageTimeSec: Int = 20 /* pages */ * getSecondsPerPage(manga.id) * chapters.size
+		if (isOnHistoryBranch) {
+			averageTimeSec = (averageTimeSec * (1f - checkNotNull(history).percent)).roundToInt()
+		}
+		if (averageTimeSec < 60) {
+			return null
+		}
+		return ReadingTime(
+			minutes = (averageTimeSec / 60) % 60,
+			hours = averageTimeSec / 3600,
+			isContinue = isOnHistoryBranch,
+		)
+	}
+
+	private suspend fun getSecondsPerPage(mangaId: Long): Int {
+		var time = if (settings.isStatsEnabled) {
+			TimeUnit.MILLISECONDS.toSeconds(statsRepository.getTimePerPage(mangaId)).toInt()
+		} else {
+			0
+		}
+		if (time == 0) {
+			time = 10 // default
+		}
+		return time
+	}
+}

app/src/main/kotlin/org/koitharu/kotatsu/details/ui/ChaptersMapper.kt

@@ -1,10 +1,14 @@
 package org.koitharu.kotatsu.details.ui
 
+import android.content.Context
+import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.bookmarks.domain.Bookmark
 import org.koitharu.kotatsu.core.model.MangaHistory
 import org.koitharu.kotatsu.details.data.MangaDetails
 import org.koitharu.kotatsu.details.ui.model.ChapterListItem
 import org.koitharu.kotatsu.details.ui.model.toListItem
+import org.koitharu.kotatsu.list.ui.model.ListHeader
+import org.koitharu.kotatsu.list.ui.model.ListModel
 import org.koitharu.kotatsu.parsers.util.mapToSet
 
 fun MangaDetails.mapChapters(
@@ -61,3 +65,22 @@ fun MangaDetails.mapChapters(
 	}
 	return result
 }
+
+fun List<ChapterListItem>.withVolumeHeaders(context: Context): List<ListModel> {
+	var prevVolume = 0
+	val result = ArrayList<ListModel>((size * 1.4).toInt())
+	for (item in this) {
+		val chapter = item.chapter
+		if (chapter.volume != prevVolume) {
+			val text = if (chapter.volume == 0) {
+				context.getString(R.string.volume_unknown)
+			} else {
+				context.getString(R.string.volume_, chapter.volume)
+			}
+			result.add(ListHeader(text))
+			prevVolume = chapter.volume
+		}
+		result.add(item)
+	}
+	return result
+}

app/src/main/kotlin/org/koitharu/kotatsu/details/ui/DetailsActivity.kt

@@ -4,7 +4,9 @@ import android.content.Context
 import android.content.Intent
 import android.graphics.Color
 import android.os.Bundle
+import android.text.style.DynamicDrawableSpan
 import android.text.style.ForegroundColorSpan
+import android.text.style.ImageSpan
 import android.text.style.RelativeSizeSpan
 import android.transition.AutoTransition
 import android.transition.Slide
@@ -136,7 +138,10 @@ class DetailsActivity :
 				},
 			),
 		)
-		viewModel.onActionDone.observeEvent(this, ReversibleActionObserver(viewBinding.containerDetails))
+		viewModel.onActionDone.observeEvent(
+			this,
+			ReversibleActionObserver(viewBinding.containerDetails, viewBinding.layoutBottom),
+		)
 		viewModel.onShowTip.observeEvent(this) { showTip() }
 		viewModel.historyInfo.observe(this, ::onHistoryChanged)
 		viewModel.selectedBranch.observe(this) {
@@ -148,6 +153,7 @@ class DetailsActivity :
 		viewModel.isChaptersEmpty.observe(this, chaptersMenuInvalidator)
 		val menuInvalidator = MenuInvalidator(this)
 		viewModel.favouriteCategories.observe(this, menuInvalidator)
+		viewModel.isStatsEnabled.observe(this, menuInvalidator)
 		viewModel.remoteManga.observe(this, menuInvalidator)
 		viewModel.branches.observe(this) {
 			viewBinding.buttonDropdown.isVisible = it.size > 1
@@ -185,6 +191,9 @@ class DetailsActivity :
 			buttonTip = null
 			val menu = PopupMenu(v.context, v)
 			menu.inflate(R.menu.popup_read)
+			menu.menu.findItem(R.id.action_forget)?.isVisible = viewModel.historyInfo.value.run {
+				!isIncognitoMode && history != null
+			}
 			menu.setOnMenuItemClickListener(this)
 			menu.setForceShowIcon(true)
 			menu.show()
@@ -201,6 +210,11 @@ class DetailsActivity :
 				true
 			}
 
+			R.id.action_forget -> {
+				viewModel.removeFromHistory()
+				true
+			}
+
 			R.id.action_pages_thumbs -> {
 				val history = viewModel.historyInfo.value.history
 				PagesThumbnailsSheet.show(
@@ -318,6 +332,18 @@ class DetailsActivity :
 		val branches = viewModel.branches.value
 		for ((i, branch) in branches.withIndex()) {
 			val title = buildSpannedString {
+				if (branch.isCurrent) {
+					inSpans(
+						ImageSpan(
+							this@DetailsActivity,
+							R.drawable.ic_current_chapter,
+							DynamicDrawableSpan.ALIGN_BASELINE,
+						),
+					) {
+						append(' ')
+					}
+					append(' ')
+				}
 				append(branch.name ?: getString(R.string.system_default))
 				append(' ')
 				append(' ')

app/src/main/kotlin/org/koitharu/kotatsu/details/ui/DetailsFragment.kt

@@ -48,6 +48,7 @@ import org.koitharu.kotatsu.core.util.ext.scaleUpActivityOptionsOf
 import org.koitharu.kotatsu.core.util.ext.showOrHide
 import org.koitharu.kotatsu.core.util.ext.textAndVisible
 import org.koitharu.kotatsu.databinding.FragmentDetailsBinding
+import org.koitharu.kotatsu.details.data.ReadingTime
 import org.koitharu.kotatsu.details.ui.model.ChapterListItem
 import org.koitharu.kotatsu.details.ui.model.HistoryInfo
 import org.koitharu.kotatsu.details.ui.related.RelatedMangaActivity
@@ -61,6 +62,7 @@ import org.koitharu.kotatsu.list.ui.adapter.mangaGridItemAD
 import org.koitharu.kotatsu.list.ui.model.ListModel
 import org.koitharu.kotatsu.list.ui.model.MangaItemModel
 import org.koitharu.kotatsu.list.ui.size.StaticItemSizeResolver
+import org.koitharu.kotatsu.local.ui.info.LocalInfoDialog
 import org.koitharu.kotatsu.main.ui.owners.NoModalBottomSheetOwner
 import org.koitharu.kotatsu.parsers.model.Manga
 import org.koitharu.kotatsu.parsers.model.MangaSource
@@ -101,6 +103,7 @@ class DetailsFragment :
 		binding.buttonScrobblingMore.setOnClickListener(this)
 		binding.buttonRelatedMore.setOnClickListener(this)
 		binding.infoLayout.textViewSource.setOnClickListener(this)
+		binding.infoLayout.textViewSize.setOnClickListener(this)
 		binding.textViewDescription.addOnLayoutChangeListener(this)
 		binding.textViewDescription.viewTreeObserver.addOnDrawListener(this)
 		binding.textViewDescription.movementMethod = LinkMovementMethodCompat.getInstance()
@@ -118,6 +121,7 @@ class DetailsFragment :
 		viewModel.localSize.observe(viewLifecycleOwner, ::onLocalSizeChanged)
 		viewModel.relatedManga.observe(viewLifecycleOwner, ::onRelatedMangaChanged)
 		viewModel.chapters.observe(viewLifecycleOwner, ::onChaptersChanged)
+		viewModel.readingTime.observe(viewLifecycleOwner, ::onReadingTimeChanged)
 	}
 
 	override fun onItemClick(item: Bookmark, view: View) {
@@ -211,6 +215,19 @@ class DetailsFragment :
 		}
 	}
 
+	private fun onReadingTimeChanged(time: ReadingTime?) {
+		val binding = viewBinding ?: return
+		if (time == null) {
+			binding.approximateReadTimeLayout.isVisible = false
+			return
+		}
+		binding.approximateReadTime.text = time.format(resources)
+		binding.approximateReadTimeTitle.setText(
+			if (time.isContinue) R.string.approximate_remaining_time else R.string.approximate_reading_time
+		)
+		binding.approximateReadTimeLayout.isVisible = true
+	}
+
 	private fun onDescriptionChanged(description: CharSequence?) {
 		val tv = requireViewBinding().textViewDescription
 		if (description.isNullOrBlank()) {
@@ -309,6 +326,10 @@ class DetailsFragment :
 				)
 			}
 
+			R.id.textView_size -> {
+				LocalInfoDialog.show(parentFragmentManager, manga)
+			}
+
 			R.id.imageView_cover -> {
 				startActivity(
 					ImageActivity.newIntent(

app/src/main/kotlin/org/koitharu/kotatsu/details/ui/DetailsMenuProvider.kt

@@ -23,6 +23,7 @@ import org.koitharu.kotatsu.favourites.ui.categories.select.FavoriteSheet
 import org.koitharu.kotatsu.parsers.model.MangaSource
 import org.koitharu.kotatsu.scrobbling.common.ui.selector.ScrobblingSelectorSheet
 import org.koitharu.kotatsu.search.ui.multi.MultiSearchActivity
+import org.koitharu.kotatsu.stats.ui.sheet.MangaStatsSheet
 
 class DetailsMenuProvider(
 	private val activity: FragmentActivity,
@@ -43,6 +44,7 @@ class DetailsMenuProvider(
 		menu.findItem(R.id.action_shortcut).isVisible = ShortcutManagerCompat.isRequestPinShortcutSupported(activity)
 		menu.findItem(R.id.action_scrobbling).isVisible = viewModel.isScrobblingAvailable
 		menu.findItem(R.id.action_online).isVisible = viewModel.remoteManga.value != null
+		menu.findItem(R.id.action_stats).isVisible = viewModel.isStatsEnabled.value
 		menu.findItem(R.id.action_favourite).setIcon(
 			if (viewModel.favouriteCategories.value) R.drawable.ic_heart else R.drawable.ic_heart_outline,
 		)
@@ -101,6 +103,12 @@ class DetailsMenuProvider(
 				}
 			}
 
+			R.id.action_stats -> {
+				viewModel.manga.value?.let {
+					MangaStatsSheet.show(activity.supportFragmentManager, it)
+				}
+			}
+
 			R.id.action_scrobbling -> {
 				viewModel.manga.value?.let {
 					ScrobblingSelectorSheet.show(activity.supportFragmentManager, it, null)

app/src/main/kotlin/org/koitharu/kotatsu/details/ui/DetailsViewModel.kt

@@ -25,6 +25,7 @@ import okio.FileNotFoundException
 import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.bookmarks.domain.Bookmark
 import org.koitharu.kotatsu.bookmarks.domain.BookmarksRepository
+import org.koitharu.kotatsu.core.model.findById
 import org.koitharu.kotatsu.core.model.getPreferredBranch
 import org.koitharu.kotatsu.core.parser.MangaIntent
 import org.koitharu.kotatsu.core.prefs.AppSettings
@@ -42,6 +43,7 @@ import org.koitharu.kotatsu.details.domain.BranchComparator
 import org.koitharu.kotatsu.details.domain.DetailsInteractor
 import org.koitharu.kotatsu.details.domain.DetailsLoadUseCase
 import org.koitharu.kotatsu.details.domain.ProgressUpdateUseCase
+import org.koitharu.kotatsu.details.domain.ReadingTimeUseCase
 import org.koitharu.kotatsu.details.domain.RelatedMangaUseCase
 import org.koitharu.kotatsu.details.ui.model.ChapterListItem
 import org.koitharu.kotatsu.details.ui.model.HistoryInfo
@@ -76,6 +78,7 @@ class DetailsViewModel @Inject constructor(
 	private val extraProvider: ListExtraProvider,
 	private val detailsLoadUseCase: DetailsLoadUseCase,
 	private val progressUpdateUseCase: ProgressUpdateUseCase,
+	private val readingTimeUseCase: ReadingTimeUseCase,
 ) : BaseViewModel() {
 
 	private val intent = MangaIntent(savedStateHandle)
@@ -97,6 +100,10 @@ class DetailsViewModel @Inject constructor(
 	val favouriteCategories = interactor.observeIsFavourite(mangaId)
 		.stateIn(viewModelScope + Dispatchers.Default, SharingStarted.Eagerly, false)
 
+	val isStatsEnabled = settings.observeAsStateFlow(viewModelScope + Dispatchers.Default, AppSettings.KEY_STATS_ENABLED) {
+		isStatsEnabled
+	}
+
 	val remoteManga = MutableStateFlow<Manga?>(null)
 
 	val newChaptersCount = details.flatMapLatest { d ->
@@ -169,10 +176,21 @@ class DetailsViewModel @Inject constructor(
 	val branches: StateFlow<List<MangaBranch>> = combine(
 		details,
 		selectedBranch,
-	) { m, b ->
-		(m?.chapters ?: return@combine emptyList())
-			.map { x -> MangaBranch(x.key, x.value.size, x.key == b) }
-			.sortedWith(BranchComparator())
+		history,
+	) { m, b, h ->
+		val c = m?.chapters
+		if (c.isNullOrEmpty()) {
+			return@combine emptyList()
+		}
+		val currentBranch = h?.let { m.allChapters.findById(it.chapterId) }?.branch
+		c.map { x ->
+			MangaBranch(
+				name = x.key,
+				count = x.value.size,
+				isSelected = x.key == b,
+				isCurrent = h != null && x.key == currentBranch,
+			)
+		}.sortedWith(BranchComparator())
 	}.stateIn(viewModelScope + Dispatchers.Default, SharingStarted.Eagerly, emptyList())
 
 	val isChaptersEmpty: StateFlow<Boolean> = details.map {
@@ -200,6 +218,14 @@ class DetailsViewModel @Inject constructor(
 		(if (reversed) list.asReversed() else list).filterSearch(query)
 	}.stateIn(viewModelScope, SharingStarted.Eagerly, emptyList())
 
+	val readingTime = combine(
+		details,
+		selectedBranch,
+		history,
+	) { m, b, h ->
+		readingTimeUseCase.invoke(m, b, h)
+	}.stateIn(viewModelScope, SharingStarted.Lazily, null)
+
 	val selectedBranchValue: String?
 		get() = selectedBranch.value
 
@@ -298,6 +324,7 @@ class DetailsViewModel @Inject constructor(
 				page = 0,
 				scroll = 0,
 				percent = percent,
+				force = true,
 			)
 		}
 	}
@@ -324,6 +351,13 @@ class DetailsViewModel @Inject constructor(
 		settings.closeTip(DetailsActivity.TIP_BUTTON)
 	}
 
+	fun removeFromHistory() {
+		launchJob(Dispatchers.Default) {
+			val handle = historyRepository.delete(setOf(mangaId))
+			onActionDone.call(ReversibleAction(R.string.removed_from_history, handle))
+		}
+	}
+
 	private fun doLoad() = launchLoadingJob(Dispatchers.Default) {
 		detailsLoadUseCase.invoke(intent)
 			.onEachWhile {

app/src/main/kotlin/org/koitharu/kotatsu/details/ui/DownloadDialogHelper.kt

@@ -8,6 +8,7 @@ import org.koitharu.kotatsu.core.ui.dialog.RecyclerViewAlertDialog
 import org.koitharu.kotatsu.core.ui.list.OnListItemClickListener
 import org.koitharu.kotatsu.download.ui.dialog.DownloadOption
 import org.koitharu.kotatsu.download.ui.dialog.downloadOptionAD
+import org.koitharu.kotatsu.settings.SettingsActivity
 
 class DownloadDialogHelper(
 	private val host: View,
@@ -57,6 +58,9 @@ class DownloadDialogHelper(
 			.setCancelable(true)
 			.setTitle(R.string.download)
 			.setNegativeButton(android.R.string.cancel)
+			.setNeutralButton(R.string.settings) { _, _ ->
+				host.context.startActivity(SettingsActivity.newDownloadsSettingsIntent(host.context))
+			}
 			.setItems(options)
 			.create()
 			.also { it.show() }

app/src/main/kotlin/org/koitharu/kotatsu/details/ui/adapter/ChapterListItemAD.kt

@@ -1,5 +1,6 @@
 package org.koitharu.kotatsu.details.ui.adapter
 
+import android.graphics.Typeface
 import androidx.core.content.ContextCompat
 import androidx.core.view.isVisible
 import com.hannesdorfmann.adapterdelegates4.dsl.adapterDelegateViewBinding
@@ -7,15 +8,16 @@ import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.core.ui.list.AdapterDelegateClickListenerAdapter
 import org.koitharu.kotatsu.core.ui.list.OnListItemClickListener
 import org.koitharu.kotatsu.core.util.ext.drawableStart
-import org.koitharu.kotatsu.core.util.ext.getThemeColor
+import org.koitharu.kotatsu.core.util.ext.getThemeColorStateList
 import org.koitharu.kotatsu.core.util.ext.textAndVisible
 import org.koitharu.kotatsu.databinding.ItemChapterBinding
 import org.koitharu.kotatsu.details.ui.model.ChapterListItem
-import com.google.android.material.R as materialR
+import org.koitharu.kotatsu.list.ui.model.ListModel
+import com.google.android.material.R as MR
 
 fun chapterListItemAD(
 	clickListener: OnListItemClickListener<ChapterListItem>,
-) = adapterDelegateViewBinding<ChapterListItem, ChapterListItem, ItemChapterBinding>(
+) = adapterDelegateViewBinding<ChapterListItem, ListModel, ItemChapterBinding>(
 	{ inflater, parent -> ItemChapterBinding.inflate(inflater, parent, false) },
 ) {
 
@@ -26,31 +28,38 @@ fun chapterListItemAD(
 	bind { payloads ->
 		if (payloads.isEmpty()) {
 			binding.textViewTitle.text = item.chapter.name
-			binding.textViewNumber.text = item.chapter.number.toString()
-			binding.textViewDescription.textAndVisible = item.description()
+			binding.textViewDescription.textAndVisible = item.description
 		}
 		when {
 			item.isCurrent -> {
-				binding.textViewNumber.setBackgroundResource(R.drawable.bg_badge_primary)
-				binding.textViewNumber.setTextColor(context.getThemeColor(materialR.attr.colorOnPrimary))
+				binding.textViewTitle.drawableStart = ContextCompat.getDrawable(context, R.drawable.ic_current_chapter)
+				binding.textViewTitle.setTextColor(context.getThemeColorStateList(android.R.attr.textColorPrimary))
+				binding.textViewDescription.setTextColor(context.getThemeColorStateList(android.R.attr.textColorPrimary))
+				binding.textViewTitle.typeface = Typeface.DEFAULT_BOLD
+				binding.textViewDescription.typeface = Typeface.DEFAULT_BOLD
 			}
 
 			item.isUnread -> {
-				binding.textViewNumber.setBackgroundResource(R.drawable.bg_badge_default)
-				binding.textViewNumber.setTextColor(context.getThemeColor(materialR.attr.colorOnTertiary))
+				binding.textViewTitle.drawableStart = if (item.isNew) {
+					ContextCompat.getDrawable(context, R.drawable.ic_new)
+				} else {
+					null
+				}
+				binding.textViewTitle.setTextColor(context.getThemeColorStateList(android.R.attr.textColorPrimary))
+				binding.textViewDescription.setTextColor(context.getThemeColorStateList(MR.attr.colorOutline))
+				binding.textViewTitle.typeface = Typeface.DEFAULT
+				binding.textViewDescription.typeface = Typeface.DEFAULT
 			}
 
 			else -> {
-				binding.textViewNumber.setBackgroundResource(R.drawable.bg_badge_outline)
-				binding.textViewNumber.setTextColor(context.getThemeColor(android.R.attr.textColorTertiary))
+				binding.textViewTitle.drawableStart = null
+				binding.textViewTitle.setTextColor(context.getThemeColorStateList(android.R.attr.textColorHint))
+				binding.textViewDescription.setTextColor(context.getThemeColorStateList(android.R.attr.textColorHint))
+				binding.textViewTitle.typeface = Typeface.DEFAULT
+				binding.textViewDescription.typeface = Typeface.DEFAULT
 			}
 		}
 		binding.imageViewBookmarked.isVisible = item.isBookmarked
 		binding.imageViewDownloaded.isVisible = item.isDownloaded
-		binding.textViewTitle.drawableStart = if (item.isNew) {
-			ContextCompat.getDrawable(context, R.drawable.ic_new)
-		} else {
-			null
-		}
 	}
 }

app/src/main/kotlin/org/koitharu/kotatsu/details/ui/adapter/ChaptersAdapter.kt

@@ -5,22 +5,20 @@ import org.koitharu.kotatsu.core.ui.BaseListAdapter
 import org.koitharu.kotatsu.core.ui.list.OnListItemClickListener
 import org.koitharu.kotatsu.core.ui.list.fastscroll.FastScroller
 import org.koitharu.kotatsu.details.ui.model.ChapterListItem
+import org.koitharu.kotatsu.list.ui.adapter.ListItemType
+import org.koitharu.kotatsu.list.ui.adapter.listHeaderAD
+import org.koitharu.kotatsu.list.ui.model.ListModel
 
 class ChaptersAdapter(
 	onItemClickListener: OnListItemClickListener<ChapterListItem>,
-) : BaseListAdapter<ChapterListItem>(), FastScroller.SectionIndexer {
+) : BaseListAdapter<ListModel>(), FastScroller.SectionIndexer {
 
 	init {
-		setHasStableIds(true)
-		delegatesManager.addDelegate(chapterListItemAD(onItemClickListener))
-	}
-
-	override fun getItemId(position: Int): Long {
-		return items[position].chapter.id
+		addDelegate(ListItemType.CHAPTER, chapterListItemAD(onItemClickListener))
+		addDelegate(ListItemType.HEADER, listHeaderAD(null))
 	}
 
 	override fun getSectionText(context: Context, position: Int): CharSequence? {
-		val item = items.getOrNull(position) ?: return null
-		return item.chapter.number.toString()
+		return findHeader(position)?.getText(context)
 	}
 }

app/src/main/kotlin/org/koitharu/kotatsu/details/ui/adapter/ChaptersSelectionDecoration.kt

@@ -9,7 +9,9 @@ import android.view.View
 import androidx.core.graphics.ColorUtils
 import androidx.recyclerview.widget.RecyclerView
 import org.koitharu.kotatsu.core.ui.list.decor.AbstractSelectionItemDecoration
+import org.koitharu.kotatsu.core.util.ext.getItem
 import org.koitharu.kotatsu.core.util.ext.getThemeColor
+import org.koitharu.kotatsu.details.ui.model.ChapterListItem
 import com.google.android.material.R as materialR
 
 class ChaptersSelectionDecoration(context: Context) : AbstractSelectionItemDecoration() {
@@ -25,6 +27,12 @@ class ChaptersSelectionDecoration(context: Context) : AbstractSelectionItemDecor
 		paint.style = Paint.Style.FILL
 	}
 
+	override fun getItemId(parent: RecyclerView, child: View): Long {
+		val holder = parent.getChildViewHolder(child) ?: return RecyclerView.NO_ID
+		val item = holder.getItem(ChapterListItem::class.java) ?: return RecyclerView.NO_ID
+		return item.chapter.id
+	}
+
 	override fun onDrawBackground(
 		canvas: Canvas,
 		parent: RecyclerView,

app/src/main/kotlin/org/koitharu/kotatsu/details/ui/model/ChapterListItem.kt

@@ -1,6 +1,8 @@
 package org.koitharu.kotatsu.details.ui.model
 
 import android.text.format.DateUtils
+import org.jsoup.internal.StringUtil.StringJoiner
+import org.koitharu.kotatsu.core.model.formatNumber
 import org.koitharu.kotatsu.list.ui.model.ListModel
 import org.koitharu.kotatsu.parsers.model.MangaChapter
 
@@ -10,6 +12,14 @@ data class ChapterListItem(
 	private val uploadDateMs: Long,
 ) : ListModel {
 
+	var description: String? = null
+		private set
+		get() {
+			if (field != null) return field
+			field = buildDescription()
+			return field
+		}
+
 	var uploadDate: CharSequence? = null
 		private set
 		get() {
@@ -38,13 +48,20 @@ data class ChapterListItem(
 	val isNew: Boolean
 		get() = hasFlag(FLAG_NEW)
 
-	fun description(): CharSequence? {
-		val scanlator = chapter.scanlator?.takeUnless { it.isBlank() }
-		return when {
-			uploadDate != null && scanlator != null -> "$uploadDate • $scanlator"
-			scanlator != null -> scanlator
-			else -> uploadDate
+	private fun buildDescription(): String {
+		val joiner = StringJoiner(" • ")
+		chapter.formatNumber()?.let {
+			joiner.add("#").append(it)
 		}
+		uploadDate?.let { date ->
+			joiner.add(date.toString())
+		}
+		chapter.scanlator?.let { scanlator ->
+			if (scanlator.isNotBlank()) {
+				joiner.add(scanlator)
+			}
+		}
+		return joiner.complete()
 	}
 
 	private fun hasFlag(flag: Int): Boolean {

app/src/main/kotlin/org/koitharu/kotatsu/details/ui/model/MangaBranch.kt

@@ -7,6 +7,7 @@ data class MangaBranch(
 	val name: String?,
 	val count: Int,
 	val isSelected: Boolean,
+	val isCurrent: Boolean,
 ) : ListModel {
 
 	override fun areItemsTheSame(other: ListModel): Boolean {

app/src/main/kotlin/org/koitharu/kotatsu/details/ui/pager/chapters/ChaptersFragment.kt

@@ -12,6 +12,9 @@ import androidx.core.view.isVisible
 import androidx.fragment.app.activityViewModels
 import androidx.lifecycle.Lifecycle
 import com.google.android.material.snackbar.Snackbar
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.flow.flowOn
+import kotlinx.coroutines.flow.map
 import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.core.ui.BaseFragment
 import org.koitharu.kotatsu.core.ui.list.ListSelectionController
@@ -26,6 +29,9 @@ import org.koitharu.kotatsu.details.ui.DetailsViewModel
 import org.koitharu.kotatsu.details.ui.adapter.ChaptersAdapter
 import org.koitharu.kotatsu.details.ui.adapter.ChaptersSelectionDecoration
 import org.koitharu.kotatsu.details.ui.model.ChapterListItem
+import org.koitharu.kotatsu.details.ui.withVolumeHeaders
+import org.koitharu.kotatsu.list.ui.adapter.TypedListSpacingDecoration
+import org.koitharu.kotatsu.list.ui.model.ListModel
 import org.koitharu.kotatsu.local.ui.LocalChaptersRemoveService
 import org.koitharu.kotatsu.parsers.model.MangaSource
 import org.koitharu.kotatsu.reader.ui.ReaderActivity.IntentBuilder
@@ -57,13 +63,17 @@ class ChaptersFragment :
 			callback = this,
 		)
 		with(binding.recyclerViewChapters) {
+			addItemDecoration(TypedListSpacingDecoration(context, true))
 			checkNotNull(selectionController).attachToRecyclerView(this)
 			setHasFixedSize(true)
 			isNestedScrollingEnabled = false
 			adapter = chaptersAdapter
 		}
 		viewModel.isLoading.observe(viewLifecycleOwner, this::onLoadingStateChanged)
-		viewModel.chapters.observe(viewLifecycleOwner, this::onChaptersChanged)
+		viewModel.chapters
+			.map { it.withVolumeHeaders(requireContext()) }
+			.flowOn(Dispatchers.Default)
+			.observe(viewLifecycleOwner, this::onChaptersChanged)
 		viewModel.isChaptersEmpty.observe(viewLifecycleOwner) {
 			binding.textViewHolder.isVisible = it
 		}
@@ -144,6 +154,9 @@ class ChaptersFragment :
 				val buffer = HashSet<Long>()
 				var isAdding = false
 				for (x in items) {
+					if (x !is ChapterListItem) {
+						continue
+					}
 					if (x.chapter.id in ids) {
 						isAdding = true
 						if (buffer.isNotEmpty()) {
@@ -159,7 +172,13 @@ class ChaptersFragment :
 			}
 
 			R.id.action_select_all -> {
-				val ids = chaptersAdapter?.items?.map { it.chapter.id } ?: return false
+				val ids = chaptersAdapter?.items?.mapNotNull {
+					if (it is ChapterListItem) {
+						it.chapter.id
+					} else {
+						null
+					}
+				} ?: return false
 				controller.addAll(ids)
 				true
 			}
@@ -183,7 +202,15 @@ class ChaptersFragment :
 	override fun onPrepareActionMode(controller: ListSelectionController, mode: ActionMode, menu: Menu): Boolean {
 		val selectedIds = selectionController?.peekCheckedIds() ?: return false
 		val allItems = chaptersAdapter?.items.orEmpty()
-		val items = allItems.withIndex().filter { (_, x) -> x.chapter.id in selectedIds }
+		val items = allItems.withIndex().mapNotNull<IndexedValue<ListModel>, IndexedValue<ChapterListItem>> { x ->
+			val value = x.value
+			@Suppress("UNCHECKED_CAST")
+			if (value is ChapterListItem && value.chapter.id in selectedIds) {
+				x as IndexedValue<ChapterListItem>
+			} else {
+				null
+			}
+		}
 		var canSave = true
 		var canDelete = true
 		items.forEach { (_, x) ->
@@ -207,15 +234,15 @@ class ChaptersFragment :
 	}
 
 	override fun onSelectionChanged(controller: ListSelectionController, count: Int) {
-		requireViewBinding().recyclerViewChapters.invalidateItemDecorations()
+		viewBinding?.recyclerViewChapters?.invalidateItemDecorations()
 	}
 
 	override fun onWindowInsetsChanged(insets: Insets) = Unit
 
-	private fun onChaptersChanged(list: List<ChapterListItem>) {
+	private fun onChaptersChanged(list: List<ListModel>) {
 		val adapter = chaptersAdapter ?: return
 		if (adapter.itemCount == 0) {
-			val position = list.indexOfFirst { it.isCurrent } - 1
+			val position = list.indexOfFirst { it is ChapterListItem && it.isCurrent } - 1
 			if (position > 0) {
 				val offset = (resources.getDimensionPixelSize(R.dimen.chapter_list_item_height) * 0.6).roundToInt()
 				adapter.setItems(

app/src/main/kotlin/org/koitharu/kotatsu/details/ui/pager/pages/PagesFragment.kt

@@ -13,7 +13,9 @@ import androidx.recyclerview.widget.GridLayoutManager
 import androidx.recyclerview.widget.RecyclerView
 import coil.ImageLoader
 import dagger.hilt.android.AndroidEntryPoint
+import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.flow.combine
+import kotlinx.coroutines.flow.flowOn
 import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.core.exceptions.resolve.SnackbarErrorObserver
 import org.koitharu.kotatsu.core.prefs.AppSettings
@@ -65,11 +67,12 @@ class PagesFragment :
 			detailsViewModel.selectedBranch,
 		) { details, history, branch ->
 			if (details != null && (details.isLoaded || details.chapters.isNotEmpty())) {
-				PagesViewModel.State(details, history, branch)
+				PagesViewModel.State(details.filterChapters(branch), history, branch)
 			} else {
 				null
 			}
-		}.observe(this, viewModel::updateState)
+		}.flowOn(Dispatchers.Default)
+			.observe(this, viewModel::updateState)
 	}
 
 	override fun onCreateViewBinding(inflater: LayoutInflater, container: ViewGroup?): FragmentPagesBinding {

app/src/main/kotlin/org/koitharu/kotatsu/download/ui/list/DownloadsViewModel.kt

@@ -21,6 +21,7 @@ import kotlinx.coroutines.plus
 import kotlinx.coroutines.sync.Mutex
 import kotlinx.coroutines.sync.withLock
 import org.koitharu.kotatsu.R
+import org.koitharu.kotatsu.core.model.formatNumber
 import org.koitharu.kotatsu.core.parser.MangaDataRepository
 import org.koitharu.kotatsu.core.parser.MangaRepository
 import org.koitharu.kotatsu.core.parser.RemoteMangaRepository
@@ -306,7 +307,7 @@ class DownloadsViewModel @Inject constructor(
 			return chapters.mapNotNullTo(ArrayList(size)) {
 				if (chapterIds == null || it.id in chapterIds) {
 					DownloadChapter(
-						number = it.number.toInt(),
+						number = it.formatNumber(),
 						name = it.name,
 						isDownloaded = it.id in localChapters,
 					)

app/src/main/kotlin/org/koitharu/kotatsu/download/ui/list/chapters/DownloadChapter.kt

@@ -4,7 +4,7 @@ import org.koitharu.kotatsu.list.ui.ListModelDiffCallback
 import org.koitharu.kotatsu.list.ui.model.ListModel
 
 data class DownloadChapter(
-	val number: Int,
+	val number: String?,
 	val name: String,
 	val isDownloaded: Boolean,
 ) : ListModel {

app/src/main/kotlin/org/koitharu/kotatsu/download/ui/worker/DownloadSlowdownDispatcher.kt

@@ -1,5 +1,6 @@
 package org.koitharu.kotatsu.download.ui.worker
 
+import androidx.collection.MutableObjectLongMap
 import kotlinx.coroutines.delay
 import org.koitharu.kotatsu.core.parser.MangaRepository
 import org.koitharu.kotatsu.core.parser.RemoteMangaRepository
@@ -9,7 +10,7 @@ class DownloadSlowdownDispatcher(
 	private val mangaRepositoryFactory: MangaRepository.Factory,
 	private val defaultDelay: Long,
 ) {
-	private val timeMap = HashMap<MangaSource, Long>()
+	private val timeMap = MutableObjectLongMap<MangaSource>()
 
 	suspend fun delay(source: MangaSource) {
 		val repo = mangaRepositoryFactory.create(source) as? RemoteMangaRepository ?: return
@@ -17,7 +18,7 @@ class DownloadSlowdownDispatcher(
 			return
 		}
 		val lastRequest = synchronized(timeMap) {
-			val res = timeMap[source] ?: 0L
+			val res = timeMap.getOrDefault(source, 0L)
 			timeMap[source] = System.currentTimeMillis()
 			res
 		}

app/src/main/kotlin/org/koitharu/kotatsu/download/ui/worker/DownloadWorker.kt

@@ -91,6 +91,7 @@ class DownloadWorker @AssistedInject constructor(
 	private val localMangaRepository: LocalMangaRepository,
 	private val mangaDataRepository: MangaDataRepository,
 	private val mangaRepositoryFactory: MangaRepository.Factory,
+	private val settings: AppSettings,
 	@LocalStorageChanges private val localStorageChanges: MutableSharedFlow<LocalManga?>,
 	notificationFactoryFactory: DownloadNotificationFactory.Factory,
 ) : CoroutineWorker(appContext, params) {
@@ -182,7 +183,7 @@ class DownloadWorker @AssistedInject constructor(
 				}
 				val repo = mangaRepositoryFactory.create(manga.source)
 				val mangaDetails = if (manga.chapters.isNullOrEmpty()) repo.getDetails(manga) else manga
-				output = LocalMangaOutput.getOrCreate(destination, mangaDetails)
+				output = LocalMangaOutput.getOrCreate(destination, mangaDetails, settings.preferredDownloadFormat)
 				val coverUrl = mangaDetails.largeCoverUrl.ifNullOrEmpty { mangaDetails.coverUrl }
 				if (coverUrl.isNotEmpty()) {
 					downloadFile(coverUrl, destination, repo.source).let { file ->
@@ -193,12 +194,12 @@ class DownloadWorker @AssistedInject constructor(
 				val chapters = getChapters(mangaDetails, includedIds)
 				for ((chapterIndex, chapter) in chapters.withIndex()) {
 					checkIsPaused()
-					if (chaptersToSkip.remove(chapter.id)) {
+					if (chaptersToSkip.remove(chapter.value.id)) {
 						publishState(currentState.copy(downloadedChapters = currentState.downloadedChapters + 1))
 						continue
 					}
 					val pages = runFailsafe {
-						repo.getPages(chapter)
+						repo.getPages(chapter.value)
 					} ?: continue
 					val pageCounter = AtomicInteger(0)
 					channelFlow {
@@ -237,7 +238,7 @@ class DownloadWorker @AssistedInject constructor(
 							),
 						)
 					}
-					if (output.flushChapter(chapter)) {
+					if (output.flushChapter(chapter.value)) {
 						runCatchingCancellable {
 							localStorageChanges.emit(LocalMangaInput.of(output.rootFile).getManga())
 						}.onFailure(Throwable::printStackTraceDebug)
@@ -377,19 +378,26 @@ class DownloadWorker @AssistedInject constructor(
 	private fun getChapters(
 		manga: Manga,
 		includedIds: LongArray?,
-	): List<MangaChapter> {
-		val chapters = checkNotNull(manga.chapters) {
-			"Chapters list must not be null"
-		}.toMutableList()
-		if (includedIds != null) {
-			val chaptersIdsSet = includedIds.toMutableSet()
-			chapters.retainAll { x -> chaptersIdsSet.remove(x.id) }
+	): List<IndexedValue<MangaChapter>> {
+		val chapters = checkNotNull(manga.chapters) { "Chapters list must not be null" }
+		val chaptersIdsSet = includedIds?.toMutableSet()
+		val result = ArrayList<IndexedValue<MangaChapter>>((chaptersIdsSet ?: chapters).size)
+		val counters = HashMap<String?, Int>()
+		for (chapter in chapters) {
+			val index = counters[chapter.branch] ?: 0
+			counters[chapter.branch] = index + 1
+			if (chaptersIdsSet != null && !chaptersIdsSet.remove(chapter.id)) {
+				continue
+			}
+			result.add(IndexedValue(index, chapter))
+		}
+		if (chaptersIdsSet != null) {
 			check(chaptersIdsSet.isEmpty()) {
 				"${chaptersIdsSet.size} of ${includedIds.size} requested chapters not found in manga"
 			}
 		}
-		check(chapters.isNotEmpty()) { "Chapters list must not be empty" }
-		return chapters
+		check(result.isNotEmpty()) { "Chapters list must not be empty" }
+		return result
 	}
 
 	private suspend inline fun <T> withMangaLock(manga: Manga, block: () -> T) = try {

app/src/main/kotlin/org/koitharu/kotatsu/explore/data/MangaSourcesRepository.kt

@@ -57,7 +57,7 @@ class MangaSourcesRepository @Inject constructor(
 			observeIsNsfwDisabled(),
 			dao.observeEnabled(SourcesSortOrder.MANUAL),
 		) { skipNsfw, sources ->
-			sources.count { skipNsfw || !MangaSource(it.source).isNsfw() }
+			sources.count { !skipNsfw || !MangaSource(it.source).isNsfw() }
 		}.distinctUntilChanged()
 	}
 

app/src/main/kotlin/org/koitharu/kotatsu/favourites/ui/categories/edit/FavouritesCategoryEditActivity.kt

@@ -68,9 +68,8 @@ class FavouritesCategoryEditActivity :
 
 	override fun onRestoreInstanceState(savedInstanceState: Bundle) {
 		super.onRestoreInstanceState(savedInstanceState)
-		val order = savedInstanceState.getSerializableCompat<ListSortOrder>(KEY_SORT_ORDER)
-		if (order != null) {
-			selectedSortOrder = order
+		savedInstanceState.getSerializableCompat<ListSortOrder>(KEY_SORT_ORDER)?.let { 
+		    selectedSortOrder = it
 		}
 	}
 

app/src/main/kotlin/org/koitharu/kotatsu/history/data/HistoryEntity.kt

@@ -15,8 +15,8 @@ import org.koitharu.kotatsu.core.db.entity.MangaEntity
 			parentColumns = ["manga_id"],
 			childColumns = ["manga_id"],
 			onDelete = ForeignKey.CASCADE,
-		)
-	]
+		),
+	],
 )
 data class HistoryEntity(
 	@PrimaryKey(autoGenerate = false)
@@ -28,4 +28,5 @@ data class HistoryEntity(
 	@ColumnInfo(name = "scroll") val scroll: Float,
 	@ColumnInfo(name = "percent") val percent: Float,
 	@ColumnInfo(name = "deleted_at") val deletedAt: Long,
+	@ColumnInfo(name = "chapters") val chaptersCount: Int,
 )

app/src/main/kotlin/org/koitharu/kotatsu/history/data/HistoryRepository.kt

@@ -90,10 +90,11 @@ class HistoryRepository @Inject constructor(
 			.distinctUntilChanged()
 	}
 
-	suspend fun addOrUpdate(manga: Manga, chapterId: Long, page: Int, scroll: Int, percent: Float) {
-		if (shouldSkip(manga)) {
+	suspend fun addOrUpdate(manga: Manga, chapterId: Long, page: Int, scroll: Int, percent: Float, force: Boolean) {
+		if (!force && shouldSkip(manga)) {
 			return
 		}
+		assert(manga.chapters != null)
 		db.withTransaction {
 			mangaRepository.storeManga(manga)
 			db.getHistoryDao().upsert(
@@ -105,14 +106,12 @@ class HistoryRepository @Inject constructor(
 					page = page,
 					scroll = scroll.toFloat(), // we migrate to int, but decide to not update database
 					percent = percent,
+					chaptersCount = manga.chapters?.size ?: -1,
 					deletedAt = 0L,
 				),
 			)
 			trackingRepository.syncWithHistory(manga, chapterId)
-			val chapter = manga.chapters?.findById(chapterId)
-			if (chapter != null) {
-				scrobblers.forEach { it.tryScrobble(manga.id, chapter) }
-			}
+			scrobblers.forEach { it.tryScrobble(manga, chapterId) }
 		}
 	}
 

app/src/main/kotlin/org/koitharu/kotatsu/history/domain/HistoryUpdateUseCase.kt

@@ -24,6 +24,7 @@ class HistoryUpdateUseCase @Inject constructor(
 			page = readerState.page,
 			scroll = readerState.scroll,
 			percent = percent,
+			force = false,
 		)
 	}
 

app/src/main/kotlin/org/koitharu/kotatsu/history/domain/MarkAsReadUseCase.kt

@@ -30,6 +30,7 @@ class MarkAsReadUseCase @Inject constructor(
 			page = pages.lastIndex,
 			scroll = 0,
 			percent = 1f,
+			force = true,
 		)
 	}
 

app/src/main/kotlin/org/koitharu/kotatsu/history/ui/HistoryListAdapter.kt

@@ -6,7 +6,6 @@ import coil.ImageLoader
 import org.koitharu.kotatsu.core.ui.list.fastscroll.FastScroller
 import org.koitharu.kotatsu.list.ui.adapter.MangaListAdapter
 import org.koitharu.kotatsu.list.ui.adapter.MangaListListener
-import org.koitharu.kotatsu.list.ui.model.ListHeader
 import org.koitharu.kotatsu.list.ui.size.ItemSizeResolver
 
 class HistoryListAdapter(
@@ -17,13 +16,6 @@ class HistoryListAdapter(
 ) : MangaListAdapter(coil, lifecycleOwner, listener, sizeResolver), FastScroller.SectionIndexer {
 
 	override fun getSectionText(context: Context, position: Int): CharSequence? {
-		val list = items
-		for (i in (0..position).reversed()) {
-			val item = list.getOrNull(i) ?: continue
-			if (item is ListHeader) {
-				return item.getText(context)
-			}
-		}
-		return null
+		return findHeader(position)?.getText(context)
 	}
 }

app/src/main/kotlin/org/koitharu/kotatsu/history/ui/HistoryListFragment.kt

@@ -11,7 +11,9 @@ import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.core.os.NetworkManageIntent
 import org.koitharu.kotatsu.core.ui.list.ListSelectionController
 import org.koitharu.kotatsu.core.ui.list.RecyclerScrollKeeper
+import org.koitharu.kotatsu.core.ui.util.MenuInvalidator
 import org.koitharu.kotatsu.core.util.ext.addMenuProvider
+import org.koitharu.kotatsu.core.util.ext.observe
 import org.koitharu.kotatsu.databinding.FragmentListBinding
 import org.koitharu.kotatsu.list.ui.MangaListFragment
 import org.koitharu.kotatsu.list.ui.size.DynamicItemSizeResolver
@@ -27,6 +29,7 @@ class HistoryListFragment : MangaListFragment() {
 		super.onViewBindingCreated(binding, savedInstanceState)
 		RecyclerScrollKeeper(binding.recyclerView).attach()
 		addMenuProvider(HistoryListMenuProvider(binding.root.context, viewModel))
+		viewModel.isStatsEnabled.observe(viewLifecycleOwner, MenuInvalidator(requireActivity()))
 	}
 
 	override fun onScrolledToEnd() = Unit

app/src/main/kotlin/org/koitharu/kotatsu/history/ui/HistoryListMenuProvider.kt

@@ -1,6 +1,7 @@
 package org.koitharu.kotatsu.history.ui
 
 import android.content.Context
+import android.content.Intent
 import android.view.Menu
 import android.view.MenuInflater
 import android.view.MenuItem
@@ -9,6 +10,7 @@ import com.google.android.material.dialog.MaterialAlertDialogBuilder
 import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.core.ui.dialog.RememberSelectionDialogListener
 import org.koitharu.kotatsu.core.util.ext.DIALOG_THEME_CENTERED
+import org.koitharu.kotatsu.stats.ui.StatsActivity
 import java.time.Instant
 import java.time.LocalDate
 import java.time.ZoneId
@@ -24,6 +26,11 @@ class HistoryListMenuProvider(
 		menuInflater.inflate(R.menu.opt_history, menu)
 	}
 
+	override fun onPrepareMenu(menu: Menu) {
+		super.onPrepareMenu(menu)
+		menu.findItem(R.id.action_stats)?.isVisible = viewModel.isStatsEnabled.value
+	}
+
 	override fun onMenuItemSelected(menuItem: MenuItem): Boolean {
 		return when (menuItem.itemId) {
 			R.id.action_clear_history -> {
@@ -31,6 +38,11 @@ class HistoryListMenuProvider(
 				true
 			}
 
+			R.id.action_stats -> {
+				context.startActivity(Intent(context, StatsActivity::class.java))
+				true
+			}
+
 			else -> false
 		}
 	}

app/src/main/kotlin/org/koitharu/kotatsu/history/ui/HistoryListViewModel.kt

@@ -71,6 +71,12 @@ class HistoryListViewModel @Inject constructor(
 		g && s.isGroupingSupported()
 	}
 
+	val isStatsEnabled = settings.observeAsStateFlow(
+		scope = viewModelScope + Dispatchers.Default,
+		key = AppSettings.KEY_STATS_ENABLED,
+		valueProducer = { isStatsEnabled },
+	)
+
 	override val content = combine(
 		sortOrder.flatMapLatest { repository.observeAllWithHistory(it) },
 		isGroupingEnabled,

app/src/main/kotlin/org/koitharu/kotatsu/list/ui/adapter/TypedListSpacingDecoration.kt

@@ -83,4 +83,5 @@ class TypedListSpacingDecoration(
 	private fun ListItemType?.isEdgeToEdge() = this == ListItemType.MANGA_NESTED_GROUP
 		|| this == ListItemType.FILTER_SORT
 		|| this == ListItemType.FILTER_TAG
+		|| this == ListItemType.CHAPTER
 }

app/src/main/kotlin/org/koitharu/kotatsu/local/data/CbzFilter.kt

@@ -18,3 +18,5 @@ fun File.hasCbzExtension() = isCbzExtension(extension)
 fun Uri.isZipUri() = scheme.let {
 	it == URI_SCHEME_ZIP || it == "cbz" || it == "zip"
 }
+
+fun Uri.isFileUri() = scheme == "file"

app/src/main/kotlin/org/koitharu/kotatsu/local/data/MangaIndex.kt

@@ -12,6 +12,8 @@ import org.koitharu.kotatsu.parsers.model.MangaState
 import org.koitharu.kotatsu.parsers.model.MangaTag
 import org.koitharu.kotatsu.parsers.util.find
 import org.koitharu.kotatsu.parsers.util.json.getBooleanOrDefault
+import org.koitharu.kotatsu.parsers.util.json.getFloatOrDefault
+import org.koitharu.kotatsu.parsers.util.json.getIntOrDefault
 import org.koitharu.kotatsu.parsers.util.json.getLongOrDefault
 import org.koitharu.kotatsu.parsers.util.json.getStringOrNull
 import org.koitharu.kotatsu.parsers.util.json.mapJSONToSet
@@ -86,19 +88,20 @@ class MangaIndex(source: String?) {
 
 	fun getCoverEntry(): String? = json.getStringOrNull("cover_entry")
 
-	fun addChapter(chapter: MangaChapter, filename: String?) {
+	fun addChapter(chapter: IndexedValue<MangaChapter>, filename: String?) {
 		val chapters = json.getJSONObject("chapters")
-		if (!chapters.has(chapter.id.toString())) {
+		if (!chapters.has(chapter.value.id.toString())) {
 			val jo = JSONObject()
-			jo.put("number", chapter.number)
-			jo.put("url", chapter.url)
-			jo.put("name", chapter.name)
-			jo.put("uploadDate", chapter.uploadDate)
-			jo.put("scanlator", chapter.scanlator)
-			jo.put("branch", chapter.branch)
-			jo.put("entries", "%08d_%03d\\d{3}".format(chapter.branch.hashCode(), chapter.number))
+			jo.put("number", chapter.value.number)
+			jo.put("volume", chapter.value.volume)
+			jo.put("url", chapter.value.url)
+			jo.put("name", chapter.value.name)
+			jo.put("uploadDate", chapter.value.uploadDate)
+			jo.put("scanlator", chapter.value.scanlator)
+			jo.put("branch", chapter.value.branch)
+			jo.put("entries", "%08d_%03d\\d{3}".format(chapter.value.branch.hashCode(), chapter.index + 1))
 			jo.put("file", filename)
-			chapters.put(chapter.id.toString(), jo)
+			chapters.put(chapter.value.id.toString(), jo)
 		}
 	}
 
@@ -162,7 +165,8 @@ class MangaIndex(source: String?) {
 					id = k.toLong(),
 					name = v.getString("name"),
 					url = v.getString("url"),
-					number = v.getInt("number"),
+					number = v.getFloatOrDefault("number", 0f),
+					volume = v.getIntOrDefault("volume", 0),
 					uploadDate = v.getLongOrDefault("uploadDate", 0L),
 					scanlator = v.getStringOrNull("scanlator"),
 					branch = v.getStringOrNull("branch"),

app/src/main/kotlin/org/koitharu/kotatsu/local/data/input/LocalMangaDirInput.kt

@@ -5,6 +5,7 @@ import androidx.core.net.toUri
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.runInterruptible
 import org.koitharu.kotatsu.core.util.AlphanumComparator
+import org.koitharu.kotatsu.core.util.ext.children
 import org.koitharu.kotatsu.core.util.ext.creationTime
 import org.koitharu.kotatsu.core.util.ext.longHashCode
 import org.koitharu.kotatsu.core.util.ext.toListSorted
@@ -71,7 +72,8 @@ class LocalMangaDirInput(root: File) : LocalMangaInput(root) {
 				MangaChapter(
 					id = "$i${f.name}".longHashCode(),
 					name = f.nameWithoutExtension.toHumanReadable(),
-					number = i + 1,
+					number = 0f,
+					volume = 0,
 					source = MangaSource.LOCAL,
 					uploadDate = f.creationTime,
 					url = f.toUri().toString(),
@@ -99,8 +101,8 @@ class LocalMangaDirInput(root: File) : LocalMangaInput(root) {
 	override suspend fun getPages(chapter: MangaChapter): List<MangaPage> = runInterruptible(Dispatchers.IO) {
 		val file = chapter.url.toUri().toFile()
 		if (file.isDirectory) {
-			file.walkCompat()
-				.filter { hasImageExtension(it) }
+			file.children()
+				.filter { it.isFile && hasImageExtension(it) }
 				.toListSorted(compareBy(AlphanumComparator()) { x -> x.name })
 				.map {
 					val pageUri = it.toUri().toString()
@@ -128,14 +130,16 @@ class LocalMangaDirInput(root: File) : LocalMangaInput(root) {
 
 	private fun String.toHumanReadable() = replace("_", " ").toCamelCase()
 
-	private fun getChaptersFiles() = root.walkCompat()
-		.filter { it.hasCbzExtension() }
+	private fun getChaptersFiles() = root.walkCompat(includeDirectories = true)
+		.filter { it != root && it.isChapterDirectory() || it.hasCbzExtension() }
 		.associateByTo(TreeMap(AlphanumComparator())) { it.name }
 
 	private fun findFirstImageEntry(): String? {
-		return root.walkCompat().firstOrNull { hasImageExtension(it) }?.toUri()?.toString()
+		return root.walkCompat(includeDirectories = false)
+			.firstOrNull { hasImageExtension(it) }?.toUri()?.toString()
 			?: run {
-				val cbz = root.walkCompat().firstOrNull { it.hasCbzExtension() } ?: return null
+				val cbz = root.walkCompat(includeDirectories = false)
+					.firstOrNull { it.hasCbzExtension() } ?: return null
 				ZipFile(cbz).use { zip ->
 					zip.entries().asSequence()
 						.firstOrNull { !it.isDirectory && hasImageExtension(it.name) }
@@ -147,4 +151,8 @@ class LocalMangaDirInput(root: File) : LocalMangaInput(root) {
 	private fun fileUri(base: File, name: String): String {
 		return File(base, name).toUri().toString()
 	}
+
+	private fun File.isChapterDirectory(): Boolean {
+		return isDirectory && children().any { hasImageExtension(it) }
+	}
 }

app/src/main/kotlin/org/koitharu/kotatsu/local/data/input/LocalMangaZipInput.kt

@@ -7,6 +7,7 @@ import androidx.core.net.toFile
 import androidx.core.net.toUri
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.runInterruptible
+import org.koitharu.kotatsu.core.util.AlphanumComparator
 import org.koitharu.kotatsu.core.util.ext.longHashCode
 import org.koitharu.kotatsu.core.util.ext.readText
 import org.koitharu.kotatsu.core.util.ext.toListSorted
@@ -71,12 +72,13 @@ class LocalMangaZipInput(root: File) : LocalMangaInput(root) {
 					publicUrl = fileUri,
 					source = MangaSource.LOCAL,
 					coverUrl = zipUri(root, findFirstImageEntry(zip.entries())?.name.orEmpty()),
-					chapters = chapters.sortedWith(org.koitharu.kotatsu.core.util.AlphanumComparator())
+					chapters = chapters.sortedWith(AlphanumComparator())
 						.mapIndexed { i, s ->
 							MangaChapter(
 								id = "$i$s".longHashCode(),
 								name = s.ifEmpty { title },
-								number = i + 1,
+								number = 0f,
+								volume = 0,
 								source = MangaSource.LOCAL,
 								uploadDate = 0L,
 								url = uriBuilder.fragment(s).build().toString(),
@@ -126,7 +128,7 @@ class LocalMangaZipInput(root: File) : LocalMangaInput(root) {
 				}
 			}
 			entries
-				.toListSorted(compareBy(org.koitharu.kotatsu.core.util.AlphanumComparator()) { x -> x.name })
+				.toListSorted(compareBy(AlphanumComparator()) { x -> x.name })
 				.map { x ->
 					val entryUri = zipUri(file, x.name)
 					MangaPage(
@@ -142,7 +144,7 @@ class LocalMangaZipInput(root: File) : LocalMangaInput(root) {
 	private fun findFirstImageEntry(entries: Enumeration<out ZipEntry>): ZipEntry? {
 		val list = entries.toList()
 			.filterNot { it.isDirectory }
-			.sortedWith(compareBy(org.koitharu.kotatsu.core.util.AlphanumComparator()) { x -> x.name })
+			.sortedWith(compareBy(AlphanumComparator()) { x -> x.name })
 		val map = MimeTypeMap.getSingleton()
 		return list.firstOrNull {
 			map.getMimeTypeFromExtension(it.name.substringAfterLast('.'))

app/src/main/kotlin/org/koitharu/kotatsu/local/data/output/LocalMangaDirOutput.kt

@@ -4,7 +4,6 @@ import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.runInterruptible
 import kotlinx.coroutines.sync.Mutex
 import kotlinx.coroutines.sync.withLock
-import org.koitharu.kotatsu.core.model.findById
 import org.koitharu.kotatsu.core.model.isLocal
 import org.koitharu.kotatsu.core.util.ext.deleteAwait
 import org.koitharu.kotatsu.core.util.ext.takeIfReadable
@@ -47,12 +46,12 @@ class LocalMangaDirOutput(
 		flushIndex()
 	}
 
-	override suspend fun addPage(chapter: MangaChapter, file: File, pageNumber: Int, ext: String) = mutex.withLock {
-		val output = chaptersOutput.getOrPut(chapter) {
+	override suspend fun addPage(chapter: IndexedValue<MangaChapter>, file: File, pageNumber: Int, ext: String) = mutex.withLock {
+		val output = chaptersOutput.getOrPut(chapter.value) {
 			ZipOutput(File(rootFile, chapterFileName(chapter) + SUFFIX_TMP))
 		}
 		val name = buildString {
-			append(FILENAME_PATTERN.format(chapter.branch.hashCode(), chapter.number, pageNumber))
+			append(FILENAME_PATTERN.format(chapter.value.branch.hashCode(), chapter.index + 1, pageNumber))
 			if (ext.isNotEmpty() && ext.length <= 4) {
 				append('.')
 				append(ext)
@@ -92,9 +91,9 @@ class LocalMangaDirOutput(
 	}
 
 	suspend fun deleteChapter(chapterId: Long) = mutex.withLock {
-		val chapter = checkNotNull(index.getMangaInfo()?.chapters) {
+		val chapter = checkNotNull(index.getMangaInfo()?.chapters?.withIndex()) {
 			"No chapters found"
-		}.findById(chapterId) ?: error("Chapter not found")
+		}.find { x -> x.value.id == chapterId } ?: error("Chapter not found")
 		val chapterDir = File(rootFile, chapterFileName(chapter))
 		chapterDir.deleteAwait()
 		index.removeChapter(chapterId)
@@ -111,11 +110,11 @@ class LocalMangaDirOutput(
 		file.renameTo(resFile)
 	}
 
-	private fun chapterFileName(chapter: MangaChapter): String {
-		index.getChapterFileName(chapter.id)?.let {
+	private fun chapterFileName(chapter: IndexedValue<MangaChapter>): String {
+		index.getChapterFileName(chapter.value.id)?.let {
 			return it
 		}
-		val baseName = "${chapter.number}_${chapter.name.toFileNameSafe()}".take(18)
+		val baseName = "${chapter.index}_${chapter.value.name.toFileNameSafe()}".take(18)
 		var i = 0
 		while (true) {
 			val name = (if (i == 0) baseName else baseName + "_$i") + ".cbz"

app/src/main/kotlin/org/koitharu/kotatsu/local/data/output/LocalMangaOutput.kt

@@ -4,7 +4,9 @@ import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.sync.Mutex
 import kotlinx.coroutines.sync.withLock
 import kotlinx.coroutines.withContext
+import okhttp3.internal.format
 import okio.Closeable
+import org.koitharu.kotatsu.core.prefs.DownloadFormat
 import org.koitharu.kotatsu.core.util.ext.printStackTraceDebug
 import org.koitharu.kotatsu.local.data.input.LocalMangaInput
 import org.koitharu.kotatsu.parsers.model.Manga
@@ -21,7 +23,7 @@ sealed class LocalMangaOutput(
 
 	abstract suspend fun addCover(file: File, ext: String)
 
-	abstract suspend fun addPage(chapter: MangaChapter, file: File, pageNumber: Int, ext: String)
+	abstract suspend fun addPage(chapter: IndexedValue<MangaChapter>, file: File, pageNumber: Int, ext: String)
 
 	abstract suspend fun flushChapter(chapter: MangaChapter): Boolean
 
@@ -35,22 +37,32 @@ sealed class LocalMangaOutput(
 		const val SUFFIX_TMP = ".tmp"
 		private val mutex = Mutex()
 
-		suspend fun getOrCreate(root: File, manga: Manga): LocalMangaOutput = withContext(Dispatchers.IO) {
-			val preferSingleCbz = manga.chapters.let {
-				it != null && it.size <= 3
+		suspend fun getOrCreate(
+			root: File,
+			manga: Manga,
+			format: DownloadFormat,
+		): LocalMangaOutput = withContext(Dispatchers.IO) {
+			val targetFormat = if (format == DownloadFormat.AUTOMATIC) {
+				if (manga.chapters.let { it != null && it.size <= 3 }) {
+					DownloadFormat.SINGLE_CBZ
+				} else {
+					DownloadFormat.MULTIPLE_CBZ
+				}
+			} else {
+				format
 			}
-			checkNotNull(getImpl(root, manga, onlyIfExists = false, preferSingleCbz))
+			checkNotNull(getImpl(root, manga, onlyIfExists = false, format = targetFormat))
 		}
 
 		suspend fun get(root: File, manga: Manga): LocalMangaOutput? = withContext(Dispatchers.IO) {
-			getImpl(root, manga, onlyIfExists = true, preferSingleCbz = false)
+			getImpl(root, manga, onlyIfExists = true, format = DownloadFormat.AUTOMATIC)
 		}
 
 		private suspend fun getImpl(
 			root: File,
 			manga: Manga,
 			onlyIfExists: Boolean,
-			preferSingleCbz: Boolean,
+			format: DownloadFormat,
 		): LocalMangaOutput? {
 			mutex.withLock {
 				var i = 0
@@ -75,10 +87,10 @@ sealed class LocalMangaOutput(
 							continue
 						}
 
-						!onlyIfExists -> if (preferSingleCbz) {
-							LocalMangaZipOutput(zip, manga)
-						} else {
-							LocalMangaDirOutput(dir, manga)
+						!onlyIfExists -> when (format) {
+							DownloadFormat.AUTOMATIC -> null
+							DownloadFormat.SINGLE_CBZ -> LocalMangaZipOutput(zip, manga)
+							DownloadFormat.MULTIPLE_CBZ -> LocalMangaDirOutput(dir, manga)
 						}
 
 						else -> null

app/src/main/kotlin/org/koitharu/kotatsu/local/data/output/LocalMangaZipOutput.kt

@@ -52,9 +52,9 @@ class LocalMangaZipOutput(
 		index.setCoverEntry(name)
 	}
 
-	override suspend fun addPage(chapter: MangaChapter, file: File, pageNumber: Int, ext: String) = mutex.withLock {
+	override suspend fun addPage(chapter: IndexedValue<MangaChapter>, file: File, pageNumber: Int, ext: String) = mutex.withLock {
 		val name = buildString {
-			append(FILENAME_PATTERN.format(chapter.branch.hashCode(), chapter.number, pageNumber))
+			append(FILENAME_PATTERN.format(chapter.value.branch.hashCode(), chapter.index + 1, pageNumber))
 			if (ext.isNotEmpty() && ext.length <= 4) {
 				append('.')
 				append(ext)
@@ -104,7 +104,7 @@ class LocalMangaZipOutput(
 				}
 			}
 		}
-		otherIndex?.getMangaInfo()?.chapters?.let { chapters ->
+		otherIndex?.getMangaInfo()?.chapters?.withIndex()?.let { chapters ->
 			for (chapter in chapters) {
 				index.addChapter(chapter, null)
 			}

app/src/main/kotlin/org/koitharu/kotatsu/local/ui/info/LocalInfoDialog.kt

@@ -0,0 +1,90 @@
+package org.koitharu.kotatsu.local.ui.info
+
+import android.content.res.ColorStateList
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.ViewGroup
+import androidx.core.widget.TextViewCompat
+import androidx.fragment.app.FragmentManager
+import androidx.fragment.app.viewModels
+import com.google.android.material.dialog.MaterialAlertDialogBuilder
+import dagger.hilt.android.AndroidEntryPoint
+import kotlinx.coroutines.flow.combine
+import org.koitharu.kotatsu.R
+import org.koitharu.kotatsu.core.model.parcelable.ParcelableManga
+import org.koitharu.kotatsu.core.ui.AlertDialogFragment
+import org.koitharu.kotatsu.core.ui.widgets.SegmentedBarView
+import org.koitharu.kotatsu.core.util.KotatsuColors
+import org.koitharu.kotatsu.core.util.FileSize
+import org.koitharu.kotatsu.core.util.ext.observe
+import org.koitharu.kotatsu.core.util.ext.showDistinct
+import org.koitharu.kotatsu.core.util.ext.withArgs
+import org.koitharu.kotatsu.databinding.DialogLocalInfoBinding
+import org.koitharu.kotatsu.parsers.model.Manga
+import com.google.android.material.R as materialR
+
+@AndroidEntryPoint
+class LocalInfoDialog : AlertDialogFragment<DialogLocalInfoBinding>() {
+
+	private val viewModel: LocalInfoViewModel by viewModels()
+
+	override fun onBuildDialog(builder: MaterialAlertDialogBuilder): MaterialAlertDialogBuilder {
+		return super.onBuildDialog(builder)
+			.setTitle(R.string.saved_manga)
+			.setNegativeButton(R.string.close, null)
+	}
+
+	override fun onCreateViewBinding(inflater: LayoutInflater, container: ViewGroup?): DialogLocalInfoBinding {
+		return DialogLocalInfoBinding.inflate(inflater, container, false)
+	}
+
+	override fun onViewBindingCreated(binding: DialogLocalInfoBinding, savedInstanceState: Bundle?) {
+		super.onViewBindingCreated(binding, savedInstanceState)
+		viewModel.path.observe(this) {
+			binding.textViewPath.text = it
+		}
+		combine(viewModel.size, viewModel.availableSize, ::Pair).observe(this) {
+			if (it.first >= 0 && it.second >= 0) {
+				setSegments(it.first, it.second)
+			} else {
+				binding.barView.animateSegments(emptyList())
+			}
+		}
+	}
+
+	private fun setSegments(size: Long, available: Long) {
+		val view = viewBinding?.barView ?: return
+		val total = size + available
+		val segment = SegmentedBarView.Segment(
+			percent = (size.toDouble() / total.toDouble()).toFloat(),
+			color = KotatsuColors.segmentColor(view.context, materialR.attr.colorPrimary),
+		)
+		requireViewBinding().labelUsed.text = view.context.getString(
+			R.string.memory_usage_pattern,
+			getString(R.string.this_manga),
+			FileSize.BYTES.format(view.context, size),
+		)
+		requireViewBinding().labelAvailable.text = view.context.getString(
+			R.string.memory_usage_pattern,
+			getString(R.string.available),
+			FileSize.BYTES.format(view.context, available),
+		)
+		TextViewCompat.setCompoundDrawableTintList(
+			requireViewBinding().labelUsed,
+			ColorStateList.valueOf(segment.color),
+		)
+		view.animateSegments(listOf(segment))
+	}
+
+	companion object {
+
+		const val ARG_MANGA = "manga"
+		private const val TAG = "LocalInfoDialog"
+
+		fun show(fm: FragmentManager, manga: Manga) {
+			LocalInfoDialog().withArgs(1) {
+				putParcelable(ARG_MANGA, ParcelableManga(manga))
+			}.showDistinct(fm, TAG)
+		}
+	}
+}

app/src/main/kotlin/org/koitharu/kotatsu/local/ui/info/LocalInfoViewModel.kt

@@ -0,0 +1,41 @@
+package org.koitharu.kotatsu.local.ui.info
+
+import androidx.core.net.toFile
+import androidx.core.net.toUri
+import androidx.lifecycle.SavedStateHandle
+import dagger.hilt.android.lifecycle.HiltViewModel
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.flow.MutableStateFlow
+import org.koitharu.kotatsu.core.model.parcelable.ParcelableManga
+import org.koitharu.kotatsu.core.ui.BaseViewModel
+import org.koitharu.kotatsu.core.ui.widgets.SegmentedBarView
+import org.koitharu.kotatsu.core.util.ext.computeSize
+import org.koitharu.kotatsu.core.util.ext.require
+import org.koitharu.kotatsu.core.util.ext.toFileOrNull
+import org.koitharu.kotatsu.local.data.LocalMangaRepository
+import org.koitharu.kotatsu.local.data.LocalStorageManager
+import javax.inject.Inject
+
+@HiltViewModel
+class LocalInfoViewModel @Inject constructor(
+	savedStateHandle: SavedStateHandle,
+	private val localMangaRepository: LocalMangaRepository,
+	private val storageManager: LocalStorageManager,
+) : BaseViewModel() {
+
+	private val manga = savedStateHandle.require<ParcelableManga>(LocalInfoDialog.ARG_MANGA).manga
+
+	val path = MutableStateFlow<String?>(null)
+	val size = MutableStateFlow(-1L)
+	val availableSize = MutableStateFlow(-1L)
+
+	init {
+		launchLoadingJob(Dispatchers.Default) {
+			val file = manga.url.toUri().toFileOrNull() ?: localMangaRepository.findSavedManga(manga)?.file
+			requireNotNull(file)
+			path.value = file.path
+			size.value = file.computeSize()
+			availableSize.value = storageManager.computeAvailableSize()
+		}
+	}
+}

app/src/main/kotlin/org/koitharu/kotatsu/main/ui/MainNavigationDelegate.kt

@@ -7,10 +7,12 @@ import androidx.activity.OnBackPressedCallback
 import androidx.annotation.IdRes
 import androidx.core.view.isEmpty
 import androidx.core.view.iterator
+import androidx.core.view.size
 import androidx.fragment.app.Fragment
 import androidx.fragment.app.FragmentManager
 import androidx.lifecycle.LifecycleOwner
 import androidx.lifecycle.lifecycleScope
+import com.google.android.material.bottomnavigation.BottomNavigationView
 import com.google.android.material.navigation.NavigationBarView
 import com.google.android.material.transition.MaterialFadeThrough
 import kotlinx.coroutines.Dispatchers
@@ -33,6 +35,7 @@ import org.koitharu.kotatsu.local.ui.LocalListFragment
 import org.koitharu.kotatsu.suggestions.ui.SuggestionsFragment
 import org.koitharu.kotatsu.tracker.ui.feed.FeedFragment
 import java.util.LinkedList
+import com.google.android.material.R as materialR
 
 private const val TAG_PRIMARY = "primary"
 
@@ -180,6 +183,9 @@ class MainNavigationDelegate(
 		for (item in items) {
 			menu.add(Menu.NONE, item.id, Menu.NONE, item.title)
 				.setIcon(item.icon)
+			if (menu.size >= navBar.maxItemCount) {
+				break
+			}
 		}
 	}
 
@@ -190,12 +196,15 @@ class MainNavigationDelegate(
 
 	private fun observeSettings(lifecycleOwner: LifecycleOwner) {
 		settings.observe()
-			.filter { x -> x == AppSettings.KEY_TRACKER_ENABLED || x == AppSettings.KEY_SUGGESTIONS }
+			.filter { x ->
+				x == AppSettings.KEY_TRACKER_ENABLED || x == AppSettings.KEY_SUGGESTIONS || x == AppSettings.KEY_NAV_LABELS
+			}
 			.onStart { emit("") }
-			.flowOn(Dispatchers.Default)
+			.flowOn(Dispatchers.IO)
 			.onEach {
 				setItemVisibility(R.id.nav_suggestions, settings.isSuggestionsEnabled)
 				setItemVisibility(R.id.nav_feed, settings.isTrackerEnabled)
+				setNavbarIsLabeled(settings.isNavLabelsVisible)
 			}.launchIn(lifecycleOwner.lifecycleScope)
 	}
 
@@ -207,6 +216,23 @@ class MainNavigationDelegate(
 		return null
 	}
 
+	private fun setNavbarIsLabeled(value: Boolean) {
+		if (navBar is BottomNavigationView) {
+			navBar.minimumHeight = navBar.resources.getDimensionPixelSize(
+				if (value) {
+					materialR.dimen.m3_bottom_nav_min_height
+				} else {
+					R.dimen.nav_bar_height_compact
+				},
+			)
+		}
+		navBar.labelVisibilityMode = if (value) {
+			NavigationBarView.LABEL_VISIBILITY_LABELED
+		} else {
+			NavigationBarView.LABEL_VISIBILITY_UNLABELED
+		}
+	}
+
 	interface OnFragmentChangedListener {
 
 		fun onFragmentChanged(fragment: Fragment, fromUser: Boolean)

app/src/main/kotlin/org/koitharu/kotatsu/main/ui/protect/ProtectActivity.kt

@@ -44,6 +44,12 @@ class ProtectActivity :
 		viewBinding.buttonNext.setOnClickListener(this)
 		viewBinding.buttonCancel.setOnClickListener(this)
 
+		viewBinding.editPassword.inputType = if (viewModel.isNumericPassword) {
+			EditorInfo.TYPE_CLASS_NUMBER or EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD
+		} else {
+			EditorInfo.TYPE_CLASS_TEXT or EditorInfo.TYPE_TEXT_VARIATION_PASSWORD
+		}
+
 		viewModel.onError.observeEvent(this, this::onError)
 		viewModel.isLoading.observe(this, this::onLoadingStateChanged)
 		viewModel.onUnlockSuccess.observeEvent(this) {

app/src/main/kotlin/org/koitharu/kotatsu/main/ui/protect/ProtectViewModel.kt

@@ -8,6 +8,7 @@ import org.koitharu.kotatsu.core.prefs.AppSettings
 import org.koitharu.kotatsu.core.ui.BaseViewModel
 import org.koitharu.kotatsu.core.util.ext.MutableEventFlow
 import org.koitharu.kotatsu.core.util.ext.call
+import org.koitharu.kotatsu.parsers.util.isNumeric
 import org.koitharu.kotatsu.parsers.util.md5
 import javax.inject.Inject
 
@@ -26,6 +27,9 @@ class ProtectViewModel @Inject constructor(
 	val isBiometricEnabled
 		get() = settings.isBiometricProtectionEnabled
 
+	val isNumericPassword
+		get() = settings.isAppPasswordNumeric
+
 	fun tryUnlock(password: String) {
 		if (job?.isActive == true) {
 			return

app/src/main/kotlin/org/koitharu/kotatsu/main/ui/welcome/WelcomeViewModel.kt

@@ -61,6 +61,8 @@ class WelcomeViewModel @Inject constructor(
 				selectedItems = selectedLocales,
 				isLoading = false,
 			)
+			repository.assimilateNewSources()
+			commit()
 		}
 	}
 

app/src/main/kotlin/org/koitharu/kotatsu/reader/data/TapGridSettings.kt

@@ -0,0 +1,83 @@
+package org.koitharu.kotatsu.reader.data
+
+import android.content.Context
+import android.content.SharedPreferences
+import androidx.core.content.edit
+import dagger.hilt.android.qualifiers.ApplicationContext
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.flow.flowOn
+import org.koitharu.kotatsu.core.util.ext.getEnumValue
+import org.koitharu.kotatsu.core.util.ext.observe
+import org.koitharu.kotatsu.core.util.ext.putEnumValue
+import org.koitharu.kotatsu.reader.domain.TapGridArea
+import org.koitharu.kotatsu.reader.ui.tapgrid.TapAction
+import javax.inject.Inject
+
+class TapGridSettings @Inject constructor(@ApplicationContext context: Context) {
+
+	private val prefs = context.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE)
+
+	init {
+		if (!prefs.getBoolean(KEY_INIT, false)) {
+			initPrefs(withDefaultValues = true)
+		}
+	}
+
+	fun getTapAction(area: TapGridArea, isLongTap: Boolean): TapAction? {
+		val key = getPrefKey(area, isLongTap)
+		return prefs.getEnumValue(key, TapAction::class.java)
+	}
+
+	fun setTapAction(area: TapGridArea, isLongTap: Boolean, action: TapAction?) {
+		val key = getPrefKey(area, isLongTap)
+		prefs.edit { putEnumValue(key, action) }
+	}
+
+	fun reset() {
+		initPrefs(withDefaultValues = true)
+	}
+
+	fun disableAll() {
+		initPrefs(withDefaultValues = false)
+	}
+
+	fun observe() = prefs.observe().flowOn(Dispatchers.IO)
+
+	private fun initPrefs(withDefaultValues: Boolean) {
+		prefs.edit {
+			clear()
+			if (withDefaultValues) {
+				initDefaultActions(this)
+			}
+			putBoolean(KEY_INIT, true)
+		}
+	}
+
+	private fun getPrefKey(area: TapGridArea, isLongTap: Boolean): String = if (isLongTap) {
+		area.name + SUFFIX_LONG
+	} else {
+		area.name
+	}
+
+	private fun initDefaultActions(editor: SharedPreferences.Editor) {
+		editor.putEnumValue(getPrefKey(TapGridArea.TOP_LEFT, false), TapAction.PAGE_PREV)
+		editor.putEnumValue(getPrefKey(TapGridArea.TOP_CENTER, false), TapAction.PAGE_PREV)
+		editor.putEnumValue(getPrefKey(TapGridArea.CENTER_LEFT, false), TapAction.PAGE_PREV)
+		editor.putEnumValue(getPrefKey(TapGridArea.BOTTOM_LEFT, false), TapAction.PAGE_PREV)
+
+		editor.putEnumValue(getPrefKey(TapGridArea.CENTER, false), TapAction.TOGGLE_UI)
+		editor.putEnumValue(getPrefKey(TapGridArea.CENTER, true), TapAction.SHOW_MENU)
+
+		editor.putEnumValue(getPrefKey(TapGridArea.TOP_RIGHT, false), TapAction.PAGE_NEXT)
+		editor.putEnumValue(getPrefKey(TapGridArea.CENTER_RIGHT, false), TapAction.PAGE_NEXT)
+		editor.putEnumValue(getPrefKey(TapGridArea.BOTTOM_CENTER, false), TapAction.PAGE_NEXT)
+		editor.putEnumValue(getPrefKey(TapGridArea.BOTTOM_RIGHT, false), TapAction.PAGE_NEXT)
+	}
+
+	private companion object {
+
+		private const val PREFS_NAME = "tap_grid"
+		private const val KEY_INIT = "_init"
+		private const val SUFFIX_LONG = "_long"
+	}
+}

app/src/main/kotlin/org/koitharu/kotatsu/reader/domain/DetectReaderModeUseCase.kt

@@ -13,11 +13,11 @@ import org.koitharu.kotatsu.core.parser.MangaDataRepository
 import org.koitharu.kotatsu.core.parser.MangaRepository
 import org.koitharu.kotatsu.core.prefs.AppSettings
 import org.koitharu.kotatsu.core.prefs.ReaderMode
+import org.koitharu.kotatsu.core.util.ext.printStackTraceDebug
 import org.koitharu.kotatsu.parsers.model.Manga
 import org.koitharu.kotatsu.parsers.model.MangaPage
 import org.koitharu.kotatsu.parsers.util.runCatchingCancellable
 import org.koitharu.kotatsu.reader.ui.ReaderState
-import org.koitharu.kotatsu.core.util.ext.printStackTraceDebug
 import java.io.InputStream
 import java.util.zip.ZipFile
 import javax.inject.Inject

app/src/main/kotlin/org/koitharu/kotatsu/reader/domain/PageLoader.kt

@@ -47,6 +47,7 @@ import org.koitharu.kotatsu.core.util.ext.ramAvailable
 import org.koitharu.kotatsu.core.util.ext.withProgress
 import org.koitharu.kotatsu.core.util.progress.ProgressDeferred
 import org.koitharu.kotatsu.local.data.PagesCache
+import org.koitharu.kotatsu.local.data.isFileUri
 import org.koitharu.kotatsu.local.data.isZipUri
 import org.koitharu.kotatsu.parsers.model.MangaPage
 import org.koitharu.kotatsu.parsers.model.MangaSource
@@ -203,20 +204,23 @@ class PageLoader @Inject constructor(
 		val pageUrl = getPageUrl(page)
 		check(pageUrl.isNotBlank()) { "Cannot obtain full image url for $page" }
 		val uri = Uri.parse(pageUrl)
-		return if (uri.isZipUri()) {
-			if (uri.scheme == URI_SCHEME_ZIP) {
+		return when {
+			uri.isZipUri() -> if (uri.scheme == URI_SCHEME_ZIP) {
 				uri
 			} else { // legacy uri
 				uri.buildUpon().scheme(URI_SCHEME_ZIP).build()
 			}
-		} else {
-			val request = createPageRequest(page, pageUrl)
-			imageProxyInterceptor.interceptPageRequest(request, okHttp).ensureSuccess().use { response ->
-				val body = checkNotNull(response.body) { "Null response body" }
-				body.withProgress(progress).use {
-					cache.put(pageUrl, it.source())
-				}
-			}.toUri()
+
+			uri.isFileUri() -> uri
+			else -> {
+				val request = createPageRequest(page, pageUrl)
+				imageProxyInterceptor.interceptPageRequest(request, okHttp).ensureSuccess().use { response ->
+					val body = checkNotNull(response.body) { "Null response body" }
+					body.withProgress(progress).use {
+						cache.put(pageUrl, it.source())
+					}
+				}.toUri()
+			}
 		}
 	}
 

app/src/main/kotlin/org/koitharu/kotatsu/reader/domain/TapGridArea.kt

@@ -0,0 +1,14 @@
+package org.koitharu.kotatsu.reader.domain
+
+enum class TapGridArea {
+
+	TOP_LEFT,
+	TOP_CENTER,
+	TOP_RIGHT,
+	CENTER_LEFT,
+	CENTER,
+	CENTER_RIGHT,
+	BOTTOM_LEFT,
+	BOTTOM_CENTER,
+	BOTTOM_RIGHT;
+}

app/src/main/kotlin/org/koitharu/kotatsu/reader/ui/ChaptersSheet.kt

@@ -8,6 +8,8 @@ import androidx.fragment.app.FragmentManager
 import androidx.fragment.app.activityViewModels
 import dagger.hilt.android.AndroidEntryPoint
 import org.koitharu.kotatsu.R
+import org.koitharu.kotatsu.core.model.MangaHistory
+import org.koitharu.kotatsu.core.model.findById
 import org.koitharu.kotatsu.core.prefs.AppSettings
 import org.koitharu.kotatsu.core.ui.list.OnListItemClickListener
 import org.koitharu.kotatsu.core.ui.sheet.BaseAdaptiveSheet
@@ -15,9 +17,13 @@ import org.koitharu.kotatsu.core.util.RecyclerViewScrollCallback
 import org.koitharu.kotatsu.core.util.ext.showDistinct
 import org.koitharu.kotatsu.databinding.SheetChaptersBinding
 import org.koitharu.kotatsu.details.ui.adapter.ChaptersAdapter
+import org.koitharu.kotatsu.details.ui.mapChapters
 import org.koitharu.kotatsu.details.ui.model.ChapterListItem
-import org.koitharu.kotatsu.details.ui.model.toListItem
+import org.koitharu.kotatsu.details.ui.withVolumeHeaders
+import org.koitharu.kotatsu.history.data.PROGRESS_NONE
+import org.koitharu.kotatsu.list.ui.adapter.TypedListSpacingDecoration
 import org.koitharu.kotatsu.parsers.model.MangaChapter
+import java.time.Instant
 import javax.inject.Inject
 import kotlin.math.roundToInt
 
@@ -37,32 +43,48 @@ class ChaptersSheet : BaseAdaptiveSheet<SheetChaptersBinding>(),
 
 	override fun onViewBindingCreated(binding: SheetChaptersBinding, savedInstanceState: Bundle?) {
 		super.onViewBindingCreated(binding, savedInstanceState)
-		val chapters = viewModel.manga?.allChapters
-		if (chapters.isNullOrEmpty()) {
+		val manga = viewModel.manga
+		if (manga == null) {
 			dismissAllowingStateLoss()
 			return
 		}
-		val currentId = viewModel.getCurrentState()?.chapterId ?: 0L
-		val currentPosition = chapters.indexOfFirst { it.id == currentId }
-		val items = chapters.mapIndexed { index, chapter ->
-			chapter.toListItem(
-				isCurrent = index == currentPosition,
-				isUnread = index > currentPosition,
-				isNew = false,
-				isDownloaded = false,
-				isBookmarked = false,
-			)
+		val state = viewModel.getCurrentState()
+		val currentChapter = state?.let { manga.allChapters.findById(it.chapterId) }
+		val chapters = manga.mapChapters(
+			history = state?.let {
+				MangaHistory(
+					createdAt = Instant.now(),
+					updatedAt = Instant.now(),
+					chapterId = it.chapterId,
+					page = it.page,
+					scroll = it.scroll,
+					percent = PROGRESS_NONE,
+				)
+			},
+			newCount = 0,
+			branch = currentChapter?.branch,
+			bookmarks = listOf(),
+		).withVolumeHeaders(binding.root.context)
+		if (chapters.isEmpty()) {
+			dismissAllowingStateLoss()
+			return
 		}
+		val currentPosition = if (currentChapter != null) {
+			chapters.indexOfFirst { it is ChapterListItem && it.chapter.id == currentChapter.id }
+		} else {
+			-1
+		}
+		binding.recyclerView.addItemDecoration(TypedListSpacingDecoration(binding.recyclerView.context, true))
 		binding.recyclerView.adapter = ChaptersAdapter(this).also { adapter ->
 			if (currentPosition >= 0) {
 				val targetPosition = (currentPosition - 1).coerceAtLeast(0)
 				val offset =
 					(resources.getDimensionPixelSize(R.dimen.chapter_list_item_height) * 0.6).roundToInt()
 				adapter.setItems(
-					items, RecyclerViewScrollCallback(binding.recyclerView, targetPosition, offset),
+					chapters, RecyclerViewScrollCallback(binding.recyclerView, targetPosition, offset),
 				)
 			} else {
-				adapter.items = items
+				adapter.items = chapters
 			}
 		}
 	}

app/src/main/kotlin/org/koitharu/kotatsu/reader/ui/PageSaveContract.kt

@@ -8,19 +8,26 @@ import android.provider.DocumentsContract
 import android.webkit.MimeTypeMap
 import androidx.activity.result.contract.ActivityResultContracts
 import androidx.core.net.toUri
+import org.koitharu.kotatsu.core.util.ext.toUriOrNull
+import java.io.File
 
 class PageSaveContract : ActivityResultContracts.CreateDocument("image/*") {
 
 	override fun createIntent(context: Context, input: String): Intent {
-		val intent = super.createIntent(context, input)
+		val intent = super.createIntent(context, input.substringAfterLast(File.separatorChar))
 		intent.type = MimeTypeMap.getSingleton()
 			.getMimeTypeFromExtension(input.substringAfterLast('.')) ?: "image/*"
 		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+			val defaultUri = input.toUriOrNull()?.run {
+				path?.let { p ->
+					buildUpon().path(p.substringBeforeLast('/')).build()
+				}
+			}
 			intent.putExtra(
 				DocumentsContract.EXTRA_INITIAL_URI,
-				Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES).toUri(),
+				defaultUri ?: Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES).toUri(),
 			)
 		}
 		return intent
 	}
-}
+}

app/src/main/kotlin/org/koitharu/kotatsu/reader/ui/PageSaveHelper.kt

@@ -15,6 +15,7 @@ import okhttp3.HttpUrl.Companion.toHttpUrl
 import okio.IOException
 import okio.buffer
 import okio.sink
+import org.koitharu.kotatsu.core.prefs.AppSettings
 import org.koitharu.kotatsu.core.util.ext.source
 import org.koitharu.kotatsu.core.util.ext.toFileOrNull
 import org.koitharu.kotatsu.core.util.ext.writeAllCancellable
@@ -30,7 +31,8 @@ private const val MAX_FILENAME_LENGTH = 10
 private const val EXTENSION_FALLBACK = "png"
 
 class PageSaveHelper @Inject constructor(
-	@ApplicationContext context: Context,
+	@ApplicationContext private val context: Context,
+	private val settings: AppSettings,
 ) {
 
 	private var continuation: Continuation<Uri>? = null
@@ -44,14 +46,7 @@ class PageSaveHelper @Inject constructor(
 		val pageUrl = pageLoader.getPageUrl(page)
 		val pageUri = pageLoader.loadPage(page, force = false)
 		val proposedName = getProposedFileName(pageUrl, pageUri)
-		val destination = withContext(Dispatchers.Main) {
-			suspendCancellableCoroutine { cont ->
-				continuation = cont
-				saveLauncher.launch(proposedName)
-			}.also {
-				continuation = null
-			}
-		}
+		val destination = getDefaultFileUri(proposedName) ?: pickFileUri(saveLauncher, proposedName)
 		runInterruptible(Dispatchers.IO) {
 			contentResolver.openOutputStream(destination)?.sink()?.buffer()
 		}?.use { output ->
@@ -62,12 +57,35 @@ class PageSaveHelper @Inject constructor(
 		return destination
 	}
 
+	private fun getDefaultFileUri(proposedName: String): Uri? {
+		if (settings.isPagesSavingAskEnabled) {
+			return null
+		}
+		return settings.getPagesSaveDir(context)?.let {
+			val ext = proposedName.substringAfterLast('.', "")
+			val mime = MimeTypeMap.getSingleton().getMimeTypeFromExtension(ext) ?: return null
+			it.createFile(mime, proposedName.substringBeforeLast('.'))?.uri
+		}
+	}
+
+	private suspend fun pickFileUri(saveLauncher: ActivityResultLauncher<String>, proposedName: String): Uri {
+		val defaultUri = settings.getPagesSaveDir(context)?.uri?.buildUpon()?.appendPath(proposedName)?.toString()
+		return withContext(Dispatchers.Main) {
+			suspendCancellableCoroutine { cont ->
+				continuation = cont
+				saveLauncher.launch(defaultUri ?: proposedName)
+			}.also {
+				continuation = null
+			}
+		}
+	}
+
 	fun onActivityResult(uri: Uri): Boolean = continuation?.apply {
 		resume(uri)
 	} != null
 
 	private suspend fun getProposedFileName(url: String, fileUri: Uri): String {
-		var name = if (url.startsWith("cbz://")) {
+		var name = if (url.startsWith("cbz:")) {
 			requireNotNull(url.toUri().fragment)
 		} else {
 			url.toHttpUrl().pathSegments.last()

app/src/main/kotlin/org/koitharu/kotatsu/reader/ui/ReaderActivity.kt

@@ -10,11 +10,11 @@ import android.transition.TransitionManager
 import android.transition.TransitionSet
 import android.view.Gravity
 import android.view.KeyEvent
-import android.view.MenuItem
 import android.view.MotionEvent
 import android.view.View
 import android.view.ViewGroup.MarginLayoutParams
 import android.view.WindowManager
+import androidx.activity.result.ActivityResultCallback
 import androidx.activity.viewModels
 import androidx.core.graphics.Insets
 import androidx.core.view.OnApplyWindowInsetsListener
@@ -41,7 +41,6 @@ import org.koitharu.kotatsu.core.prefs.ReaderMode
 import org.koitharu.kotatsu.core.ui.BaseFullscreenActivity
 import org.koitharu.kotatsu.core.ui.util.MenuInvalidator
 import org.koitharu.kotatsu.core.ui.widgets.ZoomControl
-import org.koitharu.kotatsu.core.util.GridTouchHelper
 import org.koitharu.kotatsu.core.util.IdlingDetector
 import org.koitharu.kotatsu.core.util.ShareHelper
 import org.koitharu.kotatsu.core.util.ext.hasGlobalPoint
@@ -56,12 +55,13 @@ import org.koitharu.kotatsu.databinding.ActivityReaderBinding
 import org.koitharu.kotatsu.details.ui.DetailsActivity
 import org.koitharu.kotatsu.parsers.model.Manga
 import org.koitharu.kotatsu.parsers.model.MangaChapter
+import org.koitharu.kotatsu.reader.data.TapGridSettings
+import org.koitharu.kotatsu.reader.domain.TapGridArea
 import org.koitharu.kotatsu.reader.ui.config.ReaderConfigSheet
 import org.koitharu.kotatsu.reader.ui.pager.ReaderPage
 import org.koitharu.kotatsu.reader.ui.pager.ReaderUiState
+import org.koitharu.kotatsu.reader.ui.tapgrid.TapGridDispatcher
 import org.koitharu.kotatsu.reader.ui.thumbnails.OnPageSelectListener
-import org.koitharu.kotatsu.reader.ui.thumbnails.PagesThumbnailsSheet
-import org.koitharu.kotatsu.settings.SettingsActivity
 import java.util.concurrent.TimeUnit
 import javax.inject.Inject
 
@@ -69,18 +69,23 @@ import javax.inject.Inject
 class ReaderActivity :
 	BaseFullscreenActivity<ActivityReaderBinding>(),
 	ChaptersSheet.OnChapterChangeListener,
-	GridTouchHelper.OnGridTouchListener,
+	TapGridDispatcher.OnGridTouchListener,
 	OnPageSelectListener,
 	ReaderConfigSheet.Callback,
 	ReaderControlDelegate.OnInteractionListener,
 	OnApplyWindowInsetsListener,
 	IdlingDetector.Callback,
+	ActivityResultCallback<Uri?>,
 	ZoomControl.ZoomControlListener {
 
 	@Inject
 	lateinit var settings: AppSettings
 
+	@Inject
+	lateinit var tapGridSettings: TapGridSettings
+
 	private val idlingDetector = IdlingDetector(TimeUnit.SECONDS.toMillis(10), this)
+	private val savePageRequest = registerForActivityResult(PageSaveContract(), this)
 
 	private val viewModel: ReaderViewModel by viewModels()
 
@@ -97,7 +102,7 @@ class ReaderActivity :
 	lateinit var scrollTimerFactory: ScrollTimer.Factory
 
 	private lateinit var scrollTimer: ScrollTimer
-	private lateinit var touchHelper: GridTouchHelper
+	private lateinit var touchHelper: TapGridDispatcher
 	private lateinit var controlDelegate: ReaderControlDelegate
 	private var gestureInsets: Insets = Insets.NONE
 	private lateinit var readerManager: ReaderManager
@@ -106,12 +111,11 @@ class ReaderActivity :
 	override fun onCreate(savedInstanceState: Bundle?) {
 		super.onCreate(savedInstanceState)
 		setContentView(ActivityReaderBinding.inflate(layoutInflater))
-		readerManager = ReaderManager(supportFragmentManager, R.id.container)
+		readerManager = ReaderManager(supportFragmentManager, viewBinding.container, settings)
 		supportActionBar?.setDisplayHomeAsUpEnabled(true)
-		touchHelper = GridTouchHelper(this, this)
+		touchHelper = TapGridDispatcher(this, this)
 		scrollTimer = scrollTimerFactory.create(this, this)
-		controlDelegate = ReaderControlDelegate(resources, settings, this, this)
-		viewBinding.toolbarBottom.setOnMenuItemClickListener(::onOptionsItemSelected)
+		controlDelegate = ReaderControlDelegate(resources, settings, tapGridSettings, this)
 		viewBinding.slider.setLabelFormatter(PageLabelFormatter())
 		viewBinding.zoomControl.listener = this
 		ReaderSliderListener(this, viewModel).attachToSlider(viewBinding.slider)
@@ -144,7 +148,7 @@ class ReaderActivity :
 		viewModel.isScreenshotsBlockEnabled.observe(this, this::setWindowSecure)
 		viewModel.isKeepScreenOnEnabled.observe(this, this::setKeepScreenOn)
 		viewModel.isInfoBarEnabled.observe(this, ::onReaderBarChanged)
-		viewModel.isBookmarkAdded.observe(this, this::onBookmarkStateChanged)
+		viewModel.isBookmarkAdded.observe(this, MenuInvalidator(viewBinding.toolbarBottom))
 		viewModel.onShowToast.observeEvent(this) { msgId ->
 			Snackbar.make(viewBinding.container, msgId, Snackbar.LENGTH_SHORT)
 				.setAnchorView(viewBinding.appbarBottom)
@@ -154,6 +158,11 @@ class ReaderActivity :
 			viewBinding.zoomControl.isVisible = it
 		}
 		addMenuProvider(ReaderTopMenuProvider(this, viewModel))
+		viewBinding.toolbarBottom.addMenuProvider(ReaderBottomMenuProvider(this, readerManager, viewModel))
+	}
+
+	override fun onActivityResult(result: Uri?) {
+		viewModel.onActivityResult(result)
 	}
 
 	override fun getParentActivityIntent(): Intent? {
@@ -167,6 +176,11 @@ class ReaderActivity :
 		idlingDetector.onUserInteraction()
 	}
 
+	override fun onPause() {
+		super.onPause()
+		viewModel.onPause()
+	}
+
 	override fun onIdle() {
 		viewModel.saveCurrentState(readerManager.currentReader?.getCurrentState())
 	}
@@ -192,41 +206,6 @@ class ReaderActivity :
 		viewBinding.slider.isRtl = mode == ReaderMode.REVERSED
 	}
 
-	override fun onOptionsItemSelected(item: MenuItem): Boolean {
-		when (item.itemId) {
-			R.id.action_settings -> {
-				startActivity(SettingsActivity.newReaderSettingsIntent(this))
-			}
-
-			R.id.action_pages_thumbs -> {
-				val state = viewModel.getCurrentState() ?: return false
-				PagesThumbnailsSheet.show(
-					supportFragmentManager,
-					viewModel.manga?.toManga() ?: return false,
-					state.chapterId,
-					state.page,
-				)
-			}
-
-			R.id.action_bookmark -> {
-				if (viewModel.isBookmarkAdded.value) {
-					viewModel.removeBookmark()
-				} else {
-					viewModel.addBookmark()
-				}
-			}
-
-			R.id.action_options -> {
-				viewModel.saveCurrentState(readerManager.currentReader?.getCurrentState())
-				val currentMode = readerManager.currentMode ?: return false
-				ReaderConfigSheet.show(supportFragmentManager, currentMode)
-			}
-
-			else -> return super.onOptionsItemSelected(item)
-		}
-		return true
-	}
-
 	private fun onLoadingStateChanged(isLoading: Boolean) {
 		val hasPages = viewModel.content.value.pages.isNotEmpty()
 		viewBinding.layoutLoading.isVisible = isLoading && !hasPages
@@ -235,13 +214,17 @@ class ReaderActivity :
 		} else {
 			viewBinding.toastView.hide()
 		}
-		val menu = viewBinding.toolbarBottom.menu
-		menu.findItem(R.id.action_bookmark).isVisible = hasPages
-		menu.findItem(R.id.action_pages_thumbs).isVisible = hasPages
+		viewBinding.toolbarBottom.invalidateMenu()
 	}
 
-	override fun onGridTouch(area: Int) {
-		controlDelegate.onGridTouch(area, viewBinding.container)
+	override fun onGridTouch(area: TapGridArea): Boolean {
+		return isReaderResumed() && controlDelegate.onGridTouch(area)
+	}
+
+	override fun onGridLongTouch(area: TapGridArea) {
+		if (isReaderResumed()) {
+			controlDelegate.onGridLongTouch(area)
+		}
 	}
 
 	override fun onProcessTouch(rawX: Int, rawY: Int): Boolean {
@@ -267,7 +250,7 @@ class ReaderActivity :
 	}
 
 	override fun onKeyDown(keyCode: Int, event: KeyEvent?): Boolean {
-		return controlDelegate.onKeyDown(keyCode, event) || super.onKeyDown(keyCode, event)
+		return controlDelegate.onKeyDown(keyCode) || super.onKeyDown(keyCode, event)
 	}
 
 	override fun onKeyUp(keyCode: Int, event: KeyEvent?): Boolean {
@@ -297,6 +280,10 @@ class ReaderActivity :
 		viewModel.switchMode(mode)
 	}
 
+	override fun onDoubleModeChanged(isEnabled: Boolean) {
+		readerManager.setDoubleReaderMode(isEnabled)
+	}
+
 	private fun onPageSaved(uri: Uri?) {
 		if (uri != null) {
 			Snackbar.make(viewBinding.container, R.string.page_saved, Snackbar.LENGTH_LONG)
@@ -337,10 +324,12 @@ class ReaderActivity :
 				}
 				TransitionManager.beginDelayedTransition(viewBinding.root, transition)
 			}
+			val isFullscreen = settings.isReaderFullscreenEnabled
 			viewBinding.appbarTop.isVisible = isUiVisible
 			viewBinding.appbarBottom?.isVisible = isUiVisible
 			viewBinding.infoBar.isGone = isUiVisible || (!viewModel.isInfoBarEnabled.value)
-			systemUiController.setSystemUiVisible(isUiVisible)
+			viewBinding.infoBar.isTimeVisible = isFullscreen
+			systemUiController.setSystemUiVisible(isUiVisible || !isFullscreen)
 		}
 	}
 
@@ -357,6 +346,9 @@ class ReaderActivity :
 			rightMargin = systemBars.right + topMargin
 			leftMargin = systemBars.left + topMargin
 		}
+		viewBinding.infoBar.updatePadding(
+			top = systemBars.top,
+		)
 		return WindowInsetsCompat.Builder(insets)
 			.setInsets(WindowInsetsCompat.Type.systemBars(), Insets.NONE)
 			.build()
@@ -368,6 +360,16 @@ class ReaderActivity :
 		readerManager.currentReader?.switchPageBy(delta)
 	}
 
+	override fun switchChapterBy(delta: Int) {
+		viewModel.switchChapterBy(delta)
+	}
+
+	override fun openMenu() {
+		viewModel.saveCurrentState(readerManager.currentReader?.getCurrentState())
+		val currentMode = readerManager.currentMode ?: return
+		ReaderConfigSheet.show(supportFragmentManager, currentMode)
+	}
+
 	override fun scrollBy(delta: Int, smooth: Boolean): Boolean {
 		return readerManager.currentReader?.scrollBy(delta, smooth) ?: false
 	}
@@ -381,14 +383,13 @@ class ReaderActivity :
 		return reader.isResumed && supportFragmentManager.fragments.lastOrNull() === reader
 	}
 
-	private fun onReaderBarChanged(isBarEnabled: Boolean) {
-		viewBinding.infoBar.isVisible = isBarEnabled && viewBinding.appbarTop.isGone
+	override fun onSavePageClick() {
+		val page = viewModel.getCurrentPage() ?: return
+		viewModel.saveCurrentPage(page, savePageRequest)
 	}
 
-	private fun onBookmarkStateChanged(isAdded: Boolean) {
-		val menuItem = viewBinding.toolbarBottom.menu.findItem(R.id.action_bookmark) ?: return
-		menuItem.setTitle(if (isAdded) R.string.bookmark_remove else R.string.bookmark_add)
-		menuItem.setIcon(if (isAdded) R.drawable.ic_bookmark_added else R.drawable.ic_bookmark)
+	private fun onReaderBarChanged(isBarEnabled: Boolean) {
+		viewBinding.infoBar.isVisible = isBarEnabled && viewBinding.appbarTop.isGone
 	}
 
 	private fun onUiStateChanged(pair: Pair<ReaderUiState?, ReaderUiState?>) {

app/src/main/kotlin/org/koitharu/kotatsu/reader/ui/ReaderBottomMenuProvider.kt

@@ -0,0 +1,74 @@
+package org.koitharu.kotatsu.reader.ui
+
+import android.view.Menu
+import android.view.MenuInflater
+import android.view.MenuItem
+import androidx.core.view.MenuProvider
+import androidx.fragment.app.FragmentActivity
+import org.koitharu.kotatsu.R
+import org.koitharu.kotatsu.reader.ui.config.ReaderConfigSheet
+import org.koitharu.kotatsu.reader.ui.thumbnails.PagesThumbnailsSheet
+import org.koitharu.kotatsu.settings.SettingsActivity
+
+class ReaderBottomMenuProvider(
+	private val activity: FragmentActivity,
+	private val readerManager: ReaderManager,
+	private val viewModel: ReaderViewModel,
+) : MenuProvider {
+
+	override fun onCreateMenu(menu: Menu, menuInflater: MenuInflater) {
+		menuInflater.inflate(R.menu.opt_reader_bottom, menu)
+		onPrepareMenu(menu) // fix, not called in toolbar
+	}
+
+	override fun onPrepareMenu(menu: Menu) {
+		val hasPages = viewModel.content.value.pages.isNotEmpty()
+		menu.findItem(R.id.action_pages_thumbs).isVisible = hasPages
+
+		val bookmarkItem = menu.findItem(R.id.action_bookmark) ?: return
+		bookmarkItem.isVisible = hasPages
+		if (hasPages) {
+			val hasBookmark = viewModel.isBookmarkAdded.value
+			bookmarkItem.setTitle(if (hasBookmark) R.string.bookmark_remove else R.string.bookmark_add)
+			bookmarkItem.setIcon(if (hasBookmark) R.drawable.ic_bookmark_added else R.drawable.ic_bookmark)
+		}
+	}
+
+	override fun onMenuItemSelected(menuItem: MenuItem): Boolean {
+		return when (menuItem.itemId) {
+			R.id.action_settings -> {
+				activity.startActivity(SettingsActivity.newReaderSettingsIntent(activity))
+				true
+			}
+
+			R.id.action_pages_thumbs -> {
+				val state = viewModel.getCurrentState() ?: return false
+				PagesThumbnailsSheet.show(
+					activity.supportFragmentManager,
+					viewModel.manga?.toManga() ?: return false,
+					state.chapterId,
+					state.page,
+				)
+				true
+			}
+
+			R.id.action_bookmark -> {
+				if (viewModel.isBookmarkAdded.value) {
+					viewModel.removeBookmark()
+				} else {
+					viewModel.addBookmark()
+				}
+				true
+			}
+
+			R.id.action_options -> {
+				viewModel.saveCurrentState(readerManager.currentReader?.getCurrentState())
+				val currentMode = readerManager.currentMode ?: return false
+				ReaderConfigSheet.show(activity.supportFragmentManager, currentMode)
+				true
+			}
+
+			else -> false
+		}
+	}
+}

app/src/main/kotlin/org/koitharu/kotatsu/reader/ui/ReaderControlDelegate.kt

@@ -1,83 +1,49 @@
 package org.koitharu.kotatsu.reader.ui
 
-import android.content.SharedPreferences
 import android.content.res.Resources
 import android.view.KeyEvent
-import android.view.SoundEffectConstants
-import android.view.View
-import androidx.lifecycle.DefaultLifecycleObserver
-import androidx.lifecycle.LifecycleOwner
 import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.core.prefs.AppSettings
 import org.koitharu.kotatsu.core.prefs.ReaderMode
-import org.koitharu.kotatsu.core.util.GridTouchHelper
+import org.koitharu.kotatsu.reader.data.TapGridSettings
+import org.koitharu.kotatsu.reader.domain.TapGridArea
+import org.koitharu.kotatsu.reader.ui.tapgrid.TapAction
 
 class ReaderControlDelegate(
 	resources: Resources,
 	private val settings: AppSettings,
+	private val tapGridSettings: TapGridSettings,
 	private val listener: OnInteractionListener,
-	owner: LifecycleOwner,
-) : DefaultLifecycleObserver, SharedPreferences.OnSharedPreferenceChangeListener {
+) {
 
-	private var isTapSwitchEnabled: Boolean = true
-	private var isVolumeKeysSwitchEnabled: Boolean = false
-	private var isReaderTapsAdaptive: Boolean = true
 	private var minScrollDelta = resources.getDimensionPixelSize(R.dimen.reader_scroll_delta_min)
 
-	init {
-		owner.lifecycle.addObserver(this)
-		settings.subscribe(this)
-		updateSettings()
+	fun onGridTouch(area: TapGridArea): Boolean {
+		val action = tapGridSettings.getTapAction(
+			area = area,
+			isLongTap = false,
+		) ?: return false
+		processAction(action)
+		return true
 	}
 
-	override fun onDestroy(owner: LifecycleOwner) {
-		settings.unsubscribe(this)
-		owner.lifecycle.removeObserver(this)
-		super.onDestroy(owner)
+	fun onGridLongTouch(area: TapGridArea) {
+		val action = tapGridSettings.getTapAction(
+			area = area,
+			isLongTap = true,
+		) ?: return
+		processAction(action)
 	}
 
-	override fun onSharedPreferenceChanged(sharedPreferences: SharedPreferences?, key: String?) {
-		updateSettings()
-	}
-
-	fun onGridTouch(area: Int, view: View) {
-		when (area) {
-			GridTouchHelper.AREA_CENTER -> {
-				listener.toggleUiVisibility()
-				view.playSoundEffect(SoundEffectConstants.CLICK)
-			}
-
-			GridTouchHelper.AREA_TOP -> if (isTapSwitchEnabled) {
-				listener.switchPageBy(-1)
-				view.playSoundEffect(SoundEffectConstants.NAVIGATION_UP)
-			}
-
-			GridTouchHelper.AREA_LEFT -> if (isTapSwitchEnabled) {
-				listener.switchPageBy(if (isReaderTapsReversed()) 1 else -1)
-				view.playSoundEffect(SoundEffectConstants.NAVIGATION_LEFT)
-			}
-
-			GridTouchHelper.AREA_BOTTOM -> if (isTapSwitchEnabled) {
-				listener.switchPageBy(1)
-				view.playSoundEffect(SoundEffectConstants.NAVIGATION_DOWN)
-			}
-
-			GridTouchHelper.AREA_RIGHT -> if (isTapSwitchEnabled) {
-				listener.switchPageBy(if (isReaderTapsReversed()) -1 else 1)
-				view.playSoundEffect(SoundEffectConstants.NAVIGATION_RIGHT)
-			}
-		}
-	}
-
-	fun onKeyDown(keyCode: Int, @Suppress("UNUSED_PARAMETER") event: KeyEvent?): Boolean = when (keyCode) {
-		KeyEvent.KEYCODE_VOLUME_UP -> if (isVolumeKeysSwitchEnabled) {
+	fun onKeyDown(keyCode: Int): Boolean = when (keyCode) {
+		KeyEvent.KEYCODE_VOLUME_UP -> if (settings.isReaderVolumeButtonsEnabled) {
 			listener.switchPageBy(-1)
 			true
 		} else {
 			false
 		}
 
-		KeyEvent.KEYCODE_VOLUME_DOWN -> if (isVolumeKeysSwitchEnabled) {
+		KeyEvent.KEYCODE_VOLUME_DOWN -> if (settings.isReaderVolumeButtonsEnabled) {
 			listener.switchPageBy(1)
 			true
 		} else {
@@ -132,21 +98,23 @@ class ReaderControlDelegate(
 	}
 
 	fun onKeyUp(keyCode: Int, @Suppress("UNUSED_PARAMETER") event: KeyEvent?): Boolean {
-		return (
-			isVolumeKeysSwitchEnabled &&
-				(keyCode == KeyEvent.KEYCODE_VOLUME_DOWN || keyCode == KeyEvent.KEYCODE_VOLUME_UP)
-			)
+		return (keyCode == KeyEvent.KEYCODE_VOLUME_DOWN || keyCode == KeyEvent.KEYCODE_VOLUME_UP)
+			&& settings.isReaderVolumeButtonsEnabled
 	}
 
-	private fun updateSettings() {
-		val switch = settings.readerPageSwitch
-		isTapSwitchEnabled = AppSettings.PAGE_SWITCH_TAPS in switch
-		isVolumeKeysSwitchEnabled = AppSettings.PAGE_SWITCH_VOLUME_KEYS in switch
-		isReaderTapsAdaptive = settings.isReaderTapsAdaptive
+	private fun processAction(action: TapAction) {
+		when (action) {
+			TapAction.PAGE_NEXT -> listener.switchPageBy(1)
+			TapAction.PAGE_PREV -> listener.switchPageBy(-1)
+			TapAction.CHAPTER_NEXT -> listener.switchChapterBy(1)
+			TapAction.CHAPTER_PREV -> listener.switchChapterBy(-1)
+			TapAction.TOGGLE_UI -> listener.toggleUiVisibility()
+			TapAction.SHOW_MENU -> listener.openMenu()
+		}
 	}
 
 	private fun isReaderTapsReversed(): Boolean {
-		return isReaderTapsAdaptive && listener.readerMode == ReaderMode.REVERSED
+		return settings.isReaderControlAlwaysLTR && listener.readerMode == ReaderMode.REVERSED
 	}
 
 	interface OnInteractionListener {
@@ -155,10 +123,14 @@ class ReaderControlDelegate(
 
 		fun switchPageBy(delta: Int)
 
+		fun switchChapterBy(delta: Int)
+
 		fun scrollBy(delta: Int, smooth: Boolean): Boolean
 
 		fun toggleUiVisibility()
 
+		fun openMenu()
+
 		fun isReaderResumed(): Boolean
 	}
 }

app/src/main/kotlin/org/koitharu/kotatsu/reader/ui/ReaderInfoBarView.kt

@@ -9,19 +9,22 @@ import android.graphics.Canvas
 import android.graphics.Color
 import android.graphics.Paint
 import android.graphics.Rect
+import android.graphics.drawable.Drawable
+import android.os.BatteryManager
 import android.util.AttributeSet
 import android.view.View
 import android.view.WindowInsets
 import androidx.annotation.AttrRes
 import androidx.core.content.ContextCompat
+import androidx.core.content.withStyledAttributes
 import androidx.core.graphics.ColorUtils
+import androidx.core.graphics.withScale
 import androidx.core.view.ViewCompat
 import androidx.core.view.WindowInsetsCompat
 import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.core.util.ext.getThemeColor
 import org.koitharu.kotatsu.core.util.ext.measureDimension
 import org.koitharu.kotatsu.core.util.ext.printStackTraceDebug
-import org.koitharu.kotatsu.core.util.ext.resolveDp
 import org.koitharu.kotatsu.parsers.util.format
 import org.koitharu.kotatsu.reader.ui.pager.ReaderUiState
 import java.time.LocalTime
@@ -29,6 +32,7 @@ import java.time.format.DateTimeFormatter
 import java.time.format.FormatStyle
 import com.google.android.material.R as materialR
 
+
 class ReaderInfoBarView @JvmOverloads constructor(
 	context: Context,
 	attrs: AttributeSet? = null,
@@ -38,7 +42,7 @@ class ReaderInfoBarView @JvmOverloads constructor(
 	private val paint = Paint(Paint.ANTI_ALIAS_FLAG)
 	private val textBounds = Rect()
 	private val timeFormat = DateTimeFormatter.ofLocalizedTime(FormatStyle.SHORT)
-	private val timeReceiver = TimeReceiver()
+	private val systemStateReceiver = SystemStateReceiver()
 	private var insetLeft: Int = 0
 	private var insetRight: Int = 0
 	private var insetTop: Int = 0
@@ -52,9 +56,12 @@ class ReaderInfoBarView @JvmOverloads constructor(
 		context.getThemeColor(materialR.attr.colorSurface, Color.WHITE),
 		200,
 	)
+	private val batteryIcon = ContextCompat.getDrawable(context, R.drawable.ic_battery_outline)
 
 	private var timeText = timeFormat.format(LocalTime.now())
+	private var batteryText = ""
 	private var text: String = ""
+	private var prevTextHeight: Int = 0
 
 	private val innerHeight
 		get() = height - paddingTop - paddingBottom - insetTop
@@ -62,8 +69,17 @@ class ReaderInfoBarView @JvmOverloads constructor(
 	private val innerWidth
 		get() = width - paddingLeft - paddingRight - insetLeft - insetRight
 
+	var isTimeVisible: Boolean = true
+		set(value) {
+			field = value
+			invalidate()
+		}
+
 	init {
-		paint.strokeWidth = context.resources.resolveDp(2f)
+		context.withStyledAttributes(attrs, R.styleable.ReaderInfoBarView, defStyleAttr) {
+			paint.strokeWidth = getDimension(R.styleable.ReaderInfoBarView_android_strokeWidth, 2f)
+			paint.textSize = getDimension(R.styleable.ReaderInfoBarView_android_textSize, 16f)
+		}
 		val insetCorner = getSystemUiDimensionOffset("rounded_corner_content_padding")
 		val fallbackInset = resources.getDimensionPixelOffset(R.dimen.reader_bar_inset_fallback)
 		val insetStart = getSystemUiDimensionOffset("status_bar_padding_start", fallbackInset) + insetCorner
@@ -76,7 +92,10 @@ class ReaderInfoBarView @JvmOverloads constructor(
 
 	override fun onMeasure(widthMeasureSpec: Int, heightMeasureSpec: Int) {
 		val desiredWidth = suggestedMinimumWidth + paddingLeft + paddingRight + insetLeft + insetRight
-		val desiredHeight = suggestedMinimumHeight + paddingTop + paddingBottom + insetTop
+		val desiredHeight = maxOf(
+			computeTextHeight().also { prevTextHeight = it },
+			suggestedMinimumHeight,
+		) + paddingTop + paddingBottom + insetTop
 		setMeasuredDimension(
 			measureDimension(desiredWidth, widthMeasureSpec),
 			measureDimension(desiredHeight, heightMeasureSpec),
@@ -85,25 +104,43 @@ class ReaderInfoBarView @JvmOverloads constructor(
 
 	override fun onDraw(canvas: Canvas) {
 		super.onDraw(canvas)
-		val ty = innerHeight / 2f + textBounds.height() / 2f - textBounds.bottom
+		computeTextHeight()
+		val h = innerHeight.toFloat()
+		val ty = h / 2f + textBounds.height() / 2f - textBounds.bottom
 		paint.textAlign = Paint.Align.LEFT
 		canvas.drawTextOutline(
 			text,
 			(paddingLeft + insetLeft + cutoutInsetLeft).toFloat(),
 			paddingTop + insetTop + ty,
 		)
-		paint.textAlign = Paint.Align.RIGHT
-		canvas.drawTextOutline(
-			timeText,
-			(width - paddingRight - insetRight - cutoutInsetRight).toFloat(),
-			paddingTop + insetTop + ty,
-		)
+		if (isTimeVisible) {
+			paint.textAlign = Paint.Align.RIGHT
+			var endX = (width - paddingRight - insetRight - cutoutInsetRight).toFloat()
+			canvas.drawTextOutline(timeText, endX, paddingTop + insetTop + ty)
+			if (batteryText.isNotEmpty()) {
+				paint.getTextBounds(timeText, 0, timeText.length, textBounds)
+				endX -= textBounds.width()
+				endX -= h * 0.6f
+				canvas.drawTextOutline(batteryText, endX, paddingTop + insetTop + ty)
+				batteryIcon?.let {
+					paint.getTextBounds(batteryText, 0, batteryText.length, textBounds)
+					endX -= textBounds.width()
+					val iconCenter = paddingTop + insetTop + textBounds.height() / 2
+					it.setBounds(
+						(endX - h).toInt(),
+						(iconCenter - h / 2).toInt(),
+						endX.toInt(),
+						(iconCenter + h / 2).toInt(),
+					)
+					it.drawWithOutline(canvas)
+				}
+			}
+		}
 	}
 
 	override fun onSizeChanged(w: Int, h: Int, oldw: Int, oldh: Int) {
 		super.onSizeChanged(w, h, oldw, oldh)
 		updateCutoutInsets(ViewCompat.getRootWindowInsets(this))
-		updateTextSize()
 	}
 
 	override fun onApplyWindowInsets(insets: WindowInsets): WindowInsets {
@@ -115,8 +152,11 @@ class ReaderInfoBarView @JvmOverloads constructor(
 		super.onAttachedToWindow()
 		ContextCompat.registerReceiver(
 			context,
-			timeReceiver,
-			IntentFilter(Intent.ACTION_TIME_TICK),
+			systemStateReceiver,
+			IntentFilter().apply {
+				addAction(Intent.ACTION_TIME_TICK)
+				addAction(Intent.ACTION_BATTERY_CHANGED)
+			},
 			ContextCompat.RECEIVER_EXPORTED,
 		)
 		updateCutoutInsets(ViewCompat.getRootWindowInsets(this))
@@ -124,7 +164,7 @@ class ReaderInfoBarView @JvmOverloads constructor(
 
 	override fun onDetachedFromWindow() {
 		super.onDetachedFromWindow()
-		context.unregisterReceiver(timeReceiver)
+		context.unregisterReceiver(systemStateReceiver)
 	}
 
 	fun update(state: ReaderUiState?) {
@@ -143,17 +183,18 @@ class ReaderInfoBarView @JvmOverloads constructor(
 		} else {
 			""
 		}
-		updateTextSize()
+		val newHeight = computeTextHeight()
+		if (newHeight != prevTextHeight) {
+			prevTextHeight = newHeight
+			requestLayout()
+		}
 		invalidate()
 	}
 
-	private fun updateTextSize() {
-		val str = text + timeText
-		val testTextSize = 48f
-		paint.textSize = testTextSize
-		paint.getTextBounds(str, 0, str.length, textBounds)
-		paint.textSize = testTextSize * innerHeight / textBounds.height()
+	private fun computeTextHeight(): Int {
+		val str = text + batteryText + timeText
 		paint.getTextBounds(str, 0, str.length, textBounds)
+		return textBounds.height()
 	}
 
 	private fun Canvas.drawTextOutline(text: String, x: Float, y: Float) {
@@ -165,6 +206,20 @@ class ReaderInfoBarView @JvmOverloads constructor(
 		drawText(text, x, y, paint)
 	}
 
+	private fun Drawable.drawWithOutline(canvas: Canvas) {
+		var requiredScale = (bounds.width() + paint.strokeWidth * 2f) / bounds.width().toFloat()
+		setTint(colorOutline)
+		canvas.withScale(requiredScale, requiredScale, bounds.exactCenterX(), bounds.exactCenterY()) {
+			draw(canvas)
+		}
+		requiredScale = 1f / requiredScale
+		canvas.withScale(requiredScale, requiredScale, bounds.exactCenterX(), bounds.exactCenterY()) {
+			draw(canvas)
+		}
+		setTint(colorText)
+		draw(canvas)
+	}
+
 	private fun updateCutoutInsets(insetsCompat: WindowInsetsCompat?) {
 		val cutouts = (insetsCompat ?: return).displayCutout?.boundingRects.orEmpty()
 		cutoutInsetLeft = 0
@@ -179,11 +234,19 @@ class ReaderInfoBarView @JvmOverloads constructor(
 		}
 	}
 
-	private inner class TimeReceiver : BroadcastReceiver() {
+	private inner class SystemStateReceiver : BroadcastReceiver() {
+
+		override fun onReceive(context: Context, intent: Intent) {
+			val level = intent.getIntExtra(BatteryManager.EXTRA_LEVEL, -1)
+			val scale = intent.getIntExtra(BatteryManager.EXTRA_SCALE, -1)
+			if (level != -1 && scale != -1) {
+				batteryText = context.getString(R.string.percent_string_pattern, (level * 100 / scale).toString())
+			}
 
-		override fun onReceive(context: Context?, intent: Intent?) {
 			timeText = timeFormat.format(LocalTime.now())
-			invalidate()
+			if (isTimeVisible) {
+				invalidate()
+			}
 		}
 	}
 

app/src/main/kotlin/org/koitharu/kotatsu/reader/ui/ReaderManager.kt

@@ -1,49 +1,74 @@
 package org.koitharu.kotatsu.reader.ui
 
-import androidx.annotation.IdRes
+import android.content.res.Configuration
+import androidx.fragment.app.FragmentContainerView
 import androidx.fragment.app.FragmentManager
 import androidx.fragment.app.commit
+import org.koitharu.kotatsu.core.prefs.AppSettings
 import org.koitharu.kotatsu.core.prefs.ReaderMode
+import org.koitharu.kotatsu.core.util.ext.findKeyByValue
 import org.koitharu.kotatsu.reader.ui.pager.BaseReaderFragment
+import org.koitharu.kotatsu.reader.ui.pager.doublepage.DoubleReaderFragment
+import org.koitharu.kotatsu.reader.ui.pager.doublereversed.ReversedDoubleReaderFragment
 import org.koitharu.kotatsu.reader.ui.pager.reversed.ReversedReaderFragment
 import org.koitharu.kotatsu.reader.ui.pager.standard.PagerReaderFragment
+import org.koitharu.kotatsu.reader.ui.pager.vertical.VerticalReaderFragment
 import org.koitharu.kotatsu.reader.ui.pager.webtoon.WebtoonReaderFragment
 import java.util.EnumMap
 
 class ReaderManager(
 	private val fragmentManager: FragmentManager,
-	@IdRes private val containerResId: Int,
+	private val container: FragmentContainerView,
+	private val settings: AppSettings,
 ) {
 
 	private val modeMap = EnumMap<ReaderMode, Class<out BaseReaderFragment<*>>>(ReaderMode::class.java)
 
 	init {
-		modeMap[ReaderMode.STANDARD] = PagerReaderFragment::class.java
-		modeMap[ReaderMode.REVERSED] = ReversedReaderFragment::class.java
-		modeMap[ReaderMode.WEBTOON] = WebtoonReaderFragment::class.java
+		val useDoublePages = isLandscape() && settings.isReaderDoubleOnLandscape
+		invalidateTypesMap(useDoublePages)
 	}
 
 	val currentReader: BaseReaderFragment<*>?
-		get() = fragmentManager.findFragmentById(containerResId) as? BaseReaderFragment<*>
+		get() = fragmentManager.findFragmentById(container.id) as? BaseReaderFragment<*>
 
 	val currentMode: ReaderMode?
 		get() {
 			val readerClass = currentReader?.javaClass ?: return null
-			return modeMap.entries.find { it.value == readerClass }?.key
+			return modeMap.findKeyByValue(readerClass)
 		}
 
 	fun replace(newMode: ReaderMode) {
 		val readerClass = requireNotNull(modeMap[newMode])
 		fragmentManager.commit {
 			setReorderingAllowed(true)
-			replace(containerResId, readerClass, null, null)
+			replace(container.id, readerClass, null, null)
 		}
 	}
 
-	fun replace(reader: BaseReaderFragment<*>) {
-		fragmentManager.commit {
-			setReorderingAllowed(true)
-			replace(containerResId, reader)
+	fun setDoubleReaderMode(isEnabled: Boolean) {
+		val prevMode = currentMode
+		invalidateTypesMap(isEnabled && isLandscape())
+		val newMode = currentMode ?: return
+		if (newMode != prevMode) {
+			replace(newMode)
 		}
 	}
+
+	private fun invalidateTypesMap(useDoublePages: Boolean) {
+		modeMap[ReaderMode.STANDARD] = if (useDoublePages) {
+			DoubleReaderFragment::class.java
+		} else {
+			PagerReaderFragment::class.java
+		}
+		modeMap[ReaderMode.REVERSED] = if (useDoublePages) {
+			ReversedDoubleReaderFragment::class.java
+		} else {
+			ReversedReaderFragment::class.java
+		}
+		modeMap[ReaderMode.WEBTOON] = WebtoonReaderFragment::class.java
+		modeMap[ReaderMode.VERTICAL] = VerticalReaderFragment::class.java
+	}
+
+	private fun isLandscape() = container.resources.configuration.orientation == Configuration.ORIENTATION_LANDSCAPE
 }

app/src/main/kotlin/org/koitharu/kotatsu/reader/ui/ReaderTopMenuProvider.kt

@@ -4,12 +4,13 @@ import android.view.Menu
 import android.view.MenuInflater
 import android.view.MenuItem
 import androidx.core.view.MenuProvider
+import androidx.fragment.app.FragmentActivity
 import com.google.android.material.dialog.MaterialAlertDialogBuilder
 import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.core.util.ext.DIALOG_THEME_CENTERED
 
 class ReaderTopMenuProvider(
-	private val activity: ReaderActivity,
+	private val activity: FragmentActivity,
 	private val viewModel: ReaderViewModel,
 ) : MenuProvider {