Show hint if navigation section is unavailable #751

Currently translated at 100.0% (589 of 589 strings)

Translated using Weblate (Russian)

Currently translated at 100.0% (589 of 589 strings)

Co-authored-by: Koitharu <nvasya95@gmail.com>
Translate-URL: https://hosted.weblate.org/projects/kotatsu/strings/ru/
Translate-URL: https://hosted.weblate.org/projects/kotatsu/strings/uk/
Translation: Kotatsu/Strings

CONTRIBUTING.md

@@ -1,11 +1,12 @@
 ## Kotatsu contribution guidelines
 
-- If you want to fix bug or implement a new feature, that already mention in the [issues](https://github.com/KotatsuApp/Kotatsu/issues), please, assign this issue to you and/or comment about it.
-- Whether you have to implement new feature, please, open an issue or discussion regarding it to ensure it will be accepted.
-- Translations have to be managed using the [Weblate](https://hosted.weblate.org/engage/kotatsu/) platform.
-- In case you want to add a new manga source, refer to the [parsers repository](https://github.com/KotatsuApp/kotatsu-parsers).
++ If you want to **fix bugs** or **implement new features** that **already have an [issue card](https://github.com/KotatsuApp/Kotatsu/issues):** please assign this issue to you and/or comment about it.
++ If you want to **implement a new feature:** open an issue or discussion regarding it to ensure it will be accepted.
++ **Translations** have to be managed using the [Weblate](https://hosted.weblate.org/engage/kotatsu/) platform.
++ In case you want to **add a new manga source,** refer to the [parsers repository](https://github.com/KotatsuApp/kotatsu-parsers).
 
-Refactoring or some dev-faces improvements are also might be accepted, however please stick to the following principles:
-- Performance matters. In the case of choosing between source code beauty and performance, performance should be a priority. 
-- Please, do not modify readme and other information files (except for typos).
-- Avoid adding new dependencies unless required. APK size is important.
+**Refactoring** or some **dev-faces improvements** might also be accepted. However, please stick to the following principles:
+
++ **Performance matters.** In the case of choosing between source code beauty and performance, performance should be a priority. 
++ Please, **do not modify readme and other information files** (except for typos).
++ **Avoid adding new dependencies** unless required. APK size is important.

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 = 611
-		versionName = '6.6'
+		versionCode = 622
+		versionName = '6.7'
 		generatedDensities = []
 		testInstrumentationRunner 'org.koitharu.kotatsu.HiltTestRunner'
 		ksp {
@@ -82,7 +82,7 @@ afterEvaluate {
 }
 dependencies {
 	//noinspection GradleDependency
-	implementation('com.github.KotatsuApp:kotatsu-parsers:e03d0efe71') {
+	implementation('com.github.KotatsuApp:kotatsu-parsers:014ea5ef49') {
 		exclude group: 'org.json', module: 'json'
 	}
 
@@ -94,17 +94,18 @@ dependencies {
 	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.lifecycle:lifecycle-viewmodel-ktx:2.6.2'
-	implementation 'androidx.lifecycle:lifecycle-service:2.6.2'
-	implementation 'androidx.lifecycle:lifecycle-process:2.6.2'
+	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'
 	implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
 	implementation 'androidx.swiperefreshlayout:swiperefreshlayout:1.1.0'
 	implementation 'androidx.recyclerview:recyclerview:1.3.2'
 	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 'androidx.lifecycle:lifecycle-common-java8:2.6.2'
+	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'
 	//noinspection GradleDependency
@@ -120,7 +121,7 @@ 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'
@@ -138,11 +139,15 @@ dependencies {
 
 	implementation 'ch.acra:acra-http:5.11.3'
 	implementation 'ch.acra:acra-dialog:5.11.3'
+	compileOnly 'com.google.auto.service:auto-service-annotations:1.1.1'
+	ksp 'dev.zacsweers.autoservice:auto-service-ksp:1.1.0'
 
-	debugImplementation 'com.squareup.leakcanary:leakcanary-android:2.12'
+	implementation 'org.conscrypt:conscrypt-android:2.5.2'
+
+	debugImplementation 'com.squareup.leakcanary:leakcanary-android:2.13'
 
 	testImplementation 'junit:junit:4.13.2'
-	testImplementation 'org.json:json:20231013'
+	testImplementation 'org.json:json:20240205'
 	testImplementation 'org.jetbrains.kotlinx:kotlinx-coroutines-test:1.7.3'
 
 	androidTestImplementation 'androidx.test:runner:1.5.2'
@@ -153,7 +158,7 @@ dependencies {
 	androidTestImplementation 'org.jetbrains.kotlinx:kotlinx-coroutines-test:1.7.3'
 
 	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'

app/src/debug/kotlin/org/koitharu/kotatsu/KotatsuApp.kt

@@ -36,7 +36,7 @@ class KotatsuApp : BaseApp() {
 		FragmentStrictMode.defaultPolicy = FragmentStrictMode.Policy.Builder()
 			.penaltyDeath()
 			.detectFragmentReuse()
-			// .detectWrongFragmentContainer() FIXME: migrate to ViewPager2
+			.detectWrongFragmentContainer()
 			.detectRetainInstanceUsage()
 			.detectSetUserVisibleHint()
 			.detectFragmentTagUsage()

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/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/core/BaseApp.kt

@@ -2,6 +2,7 @@ package org.koitharu.kotatsu.core
 
 import android.app.Application
 import android.content.Context
+import android.os.Build
 import androidx.annotation.WorkerThread
 import androidx.appcompat.app.AppCompatDelegate
 import androidx.hilt.work.HiltWorkerFactory
@@ -19,6 +20,7 @@ import org.acra.config.httpSender
 import org.acra.data.StringFormat
 import org.acra.ktx.initAcra
 import org.acra.sender.HttpSender
+import org.conscrypt.Conscrypt
 import org.koitharu.kotatsu.BuildConfig
 import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.core.db.MangaDatabase
@@ -27,6 +29,7 @@ import org.koitharu.kotatsu.core.prefs.AppSettings
 import org.koitharu.kotatsu.core.util.WorkServiceStopHelper
 import org.koitharu.kotatsu.core.util.ext.processLifecycleScope
 import org.koitharu.kotatsu.settings.work.WorkScheduleManager
+import java.security.Security
 import javax.inject.Inject
 import javax.inject.Provider
 
@@ -52,7 +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>
@@ -66,6 +69,10 @@ open class BaseApp : Application(), Configuration.Provider {
 		super.onCreate()
 		AppCompatDelegate.setDefaultNightMode(settings.theme)
 		AppCompatDelegate.setApplicationLocales(settings.appLocales)
+		// TLS 1.3 support for Android < 10
+		if (Build.VERSION.SDK_INT < Build.VERSION_CODES.Q) {
+			Security.insertProviderAt(Conscrypt.newProvider(), 1)
+		}
 		setupActivityLifecycleCallbacks()
 		processLifecycleScope.launch {
 			val isOriginalApp = withContext(Dispatchers.Default) {
@@ -76,7 +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/ErrorReportingAdmin.kt

@@ -0,0 +1,24 @@
+package org.koitharu.kotatsu.core
+
+import android.content.Context
+import com.google.auto.service.AutoService
+import org.acra.builder.ReportBuilder
+import org.acra.config.CoreConfiguration
+import org.acra.config.ReportingAdministrator
+
+@AutoService(ReportingAdministrator::class)
+class ErrorReportingAdmin : ReportingAdministrator {
+
+	override fun shouldStartCollecting(
+		context: Context,
+		config: CoreConfiguration,
+		reportBuilder: ReportBuilder
+	): Boolean {
+		return reportBuilder.exception?.isDeadOs() != true
+	}
+
+	private fun Throwable.isDeadOs(): Boolean {
+		val className = javaClass.simpleName
+		return className == "DeadSystemException" || className == "DeadSystemRuntimeException" || cause?.isDeadOs() == true
+	}
+}

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/model/parcelable/ParcelableChapter.kt

@@ -19,7 +19,8 @@ data class ParcelableChapter(
 			MangaChapter(
 				id = parcel.readLong(),
 				name = parcel.readString().orEmpty(),
-				number = parcel.readInt(),
+				number = parcel.readFloat(),
+				volume = parcel.readInt(),
 				url = parcel.readString().orEmpty(),
 				scanlator = parcel.readString(),
 				uploadDate = parcel.readLong(),
@@ -31,7 +32,8 @@ data class ParcelableChapter(
 		override fun ParcelableChapter.write(parcel: Parcel, flags: Int) = with(chapter) {
 			parcel.writeLong(id)
 			parcel.writeString(name)
-			parcel.writeInt(number)
+			parcel.writeFloat(number)
+			parcel.writeInt(volume)
 			parcel.writeString(url)
 			parcel.writeString(scanlator)
 			parcel.writeLong(uploadDate)

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)

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

@@ -101,14 +101,18 @@ 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 isReaderFullscreenEnabled: Boolean
+		get() = prefs.getBoolean(KEY_READER_FULLSCREEN, true)
 
 	val isReaderOptimizationEnabled: Boolean
 		get() = prefs.getBoolean(KEY_READER_OPTIMIZE, false)
@@ -347,15 +351,23 @@ class AppSettings @Inject constructor(@ApplicationContext context: Context) {
 		set(value) = prefs.edit { putEnumValue(KEY_LOCAL_LIST_ORDER, value) }
 
 	var historySortOrder: ListSortOrder
-		get() = prefs.getEnumValue(KEY_HISTORY_ORDER, ListSortOrder.UPDATED)
+		get() = prefs.getEnumValue(KEY_HISTORY_ORDER, ListSortOrder.LAST_READ)
 		set(value) = prefs.edit { putEnumValue(KEY_HISTORY_ORDER, value) }
 
+	var allFavoritesSortOrder: ListSortOrder
+		get() = prefs.getEnumValue(KEY_FAVORITES_ORDER, ListSortOrder.NEWEST)
+		set(value) = prefs.edit { putEnumValue(KEY_FAVORITES_ORDER, value) }
+
 	val isRelatedMangaEnabled: Boolean
 		get() = prefs.getBoolean(KEY_RELATED_MANGA, true)
 
 	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)
@@ -391,6 +403,9 @@ 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)
+
 	fun isTipEnabled(tip: String): Boolean {
 		return prefs.getStringSet(KEY_TIPS_CLOSED, emptySet())?.contains(tip) != true
 	}
@@ -449,7 +464,6 @@ 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"
@@ -472,8 +486,10 @@ 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_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"
@@ -514,6 +530,7 @@ 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_ALL_FAVOURITES_VISIBLE = "all_favourites_visible"
 		const val KEY_DOH = "doh"
@@ -526,11 +543,13 @@ 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"
@@ -563,6 +582,7 @@ 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"
+		const val KEY_READING_TIME = "reading_time"
 
 		// About
 		const val KEY_APP_UPDATE = "app_update"

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/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
 
@@ -35,4 +36,15 @@ open class BaseListAdapter<T : ListModel> : AsyncListDifferDelegationAdapter<T>(
 	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/list/fastscroll/FastScrollRecyclerView.kt

@@ -4,8 +4,10 @@ import android.content.Context
 import android.util.AttributeSet
 import android.view.ViewGroup
 import androidx.annotation.AttrRes
+import androidx.core.view.ancestors
 import androidx.core.view.isVisible
 import androidx.recyclerview.widget.RecyclerView
+import androidx.viewpager2.widget.ViewPager2
 import org.koitharu.kotatsu.R
 
 class FastScrollRecyclerView @JvmOverloads constructor(
@@ -15,6 +17,16 @@ class FastScrollRecyclerView @JvmOverloads constructor(
 ) : RecyclerView(context, attrs, defStyleAttr) {
 
 	val fastScroller = FastScroller(context, attrs)
+	var isVP2BugWorkaroundEnabled = false
+		set(value) {
+			field = value
+			if (value && isAttachedToWindow) {
+				checkIfInVP2()
+			} else if (!value) {
+				applyVP2Workaround = false
+			}
+		}
+	private var applyVP2Workaround = false
 
 	var isFastScrollerEnabled: Boolean = true
 		set(value) {
@@ -43,10 +55,29 @@ class FastScrollRecyclerView @JvmOverloads constructor(
 	override fun onAttachedToWindow() {
 		super.onAttachedToWindow()
 		fastScroller.attachRecyclerView(this)
+		if (isVP2BugWorkaroundEnabled) {
+			checkIfInVP2()
+		}
 	}
 
 	override fun onDetachedFromWindow() {
 		fastScroller.detachRecyclerView()
 		super.onDetachedFromWindow()
+		applyVP2Workaround = false
+	}
+
+	override fun isLayoutRequested(): Boolean {
+		return if (applyVP2Workaround) false else super.isLayoutRequested()
+	}
+
+	override fun requestLayout() {
+		super.requestLayout()
+		if (applyVP2Workaround && parent?.isLayoutRequested == true) {
+			parent?.requestLayout()
+		}
+	}
+
+	private fun checkIfInVP2() {
+		applyVP2Workaround = ancestors.any { it is ViewPager2 } == true
 	}
 }

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

@@ -0,0 +1,38 @@
+package org.koitharu.kotatsu.core.ui.util
+
+import android.view.MenuItem
+import android.view.View
+import androidx.appcompat.widget.PopupMenu
+import androidx.core.view.MenuProvider
+import org.koitharu.kotatsu.core.util.ext.setOnContextClickListenerCompat
+
+class PopupMenuMediator(
+	private val provider: MenuProvider,
+) : View.OnLongClickListener, PopupMenu.OnMenuItemClickListener, PopupMenu.OnDismissListener {
+
+	override fun onLongClick(v: View): Boolean {
+		val menu = PopupMenu(v.context, v)
+		provider.onCreateMenu(menu.menu, menu.menuInflater)
+		provider.onPrepareMenu(menu.menu)
+		if (!menu.menu.hasVisibleItems()) {
+			return false
+		}
+		menu.setOnMenuItemClickListener(this)
+		menu.setOnDismissListener(this)
+		menu.show()
+		return true
+	}
+
+	override fun onMenuItemClick(item: MenuItem): Boolean {
+		return provider.onMenuItemSelected(item)
+	}
+
+	override fun onDismiss(menu: PopupMenu) {
+		provider.onMenuClosed(menu.menu)
+	}
+
+	fun attach(view: View) {
+		view.setOnLongClickListener(this)
+		view.setOnContextClickListenerCompat(this)
+	}
+}

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/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/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/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/Theme.kt

@@ -8,9 +8,11 @@ import androidx.annotation.AttrRes
 import androidx.annotation.ColorInt
 import androidx.annotation.FloatRange
 import androidx.annotation.Px
+import androidx.annotation.StyleRes
 import androidx.core.content.ContextCompat
 import androidx.core.content.res.use
 import androidx.core.graphics.ColorUtils
+import com.google.android.material.R as materialR
 
 fun Context.getThemeDrawable(
 	@AttrRes resId: Int,
@@ -75,3 +77,7 @@ fun TypedArray.getDrawableCompat(context: Context, index: Int): Drawable? {
 	val resId = getResourceId(index, 0)
 	return if (resId != 0) ContextCompat.getDrawable(context, resId) else null
 }
+
+@get:StyleRes
+val DIALOG_THEME_CENTERED: Int
+	inline get() = materialR.style.ThemeOverlay_Material3_MaterialAlertDialog_Centered

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

@@ -15,7 +15,9 @@ import androidx.core.view.descendants
 import androidx.core.view.isVisible
 import androidx.recyclerview.widget.RecyclerView
 import androidx.recyclerview.widget.RecyclerView.ViewHolder
+import androidx.swiperefreshlayout.widget.CircularProgressDrawable
 import androidx.viewpager2.widget.ViewPager2
+import com.google.android.material.button.MaterialButton
 import com.google.android.material.progressindicator.BaseProgressIndicator
 import com.google.android.material.slider.Slider
 import com.google.android.material.tabs.TabLayout
@@ -161,3 +163,12 @@ val Toolbar.menuView: ActionMenuView?
 		menu // to call ensureMenu()
 		return children.firstNotNullOfOrNull { it as? ActionMenuView }
 	}
+
+fun MaterialButton.setProgressIcon() {
+	val progressDrawable = CircularProgressDrawable(context)
+	progressDrawable.strokeWidth = resources.resolveDp(2f)
+	progressDrawable.setColorSchemeColors(currentTextColor)
+	progressDrawable.setTintList(textColors)
+	icon = progressDrawable
+	progressDrawable.start()
+}

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 +1,21 @@
+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 -> 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 +1,39 @@
+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 javax.inject.Inject
+import kotlin.math.roundToInt
+
+class ReadingTimeUseCase @Inject constructor(
+	private val settings: AppSettings,
+) {
+
+	fun invoke(manga: MangaDetails?, branch: String?, history: MangaHistory?): ReadingTime? {
+		if (!settings.isReadingTimeEstimationEnabled) {
+			return null
+		}
+		// FIXME MAXIMUM HARDCODE!!! To do calculation with user's page read speed and his favourites/history mangas average pages in chapter
+		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 * 10 * chapters.size // 20 pages, 10 seconds per page
+		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,
+		)
+	}
+}

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

@@ -8,12 +8,15 @@ import androidx.activity.OnBackPressedCallback
 import androidx.appcompat.view.ActionMode
 import androidx.viewpager2.widget.ViewPager2
 import com.google.android.material.bottomsheet.BottomSheetBehavior
+import com.google.android.material.tabs.TabLayout
 import org.koitharu.kotatsu.core.ui.util.ActionModeListener
 import org.koitharu.kotatsu.core.util.ext.doOnExpansionsChanged
+import org.koitharu.kotatsu.core.util.ext.setTabsEnabled
 
 class ChaptersBottomSheetMediator(
 	private val behavior: BottomSheetBehavior<*>,
 	private val pager: ViewPager2,
+	private val tabLayout: TabLayout,
 ) : OnBackPressedCallback(false),
 	ActionModeListener,
 	OnLayoutChangeListener, View.OnGenericMotionListener {
@@ -75,8 +78,7 @@ class ChaptersBottomSheetMediator(
 
 	fun lock() {
 		lockCounter++
-		behavior.isDraggable = lockCounter <= 0
-		pager.isUserInputEnabled = lockCounter <= 0
+		updateLock()
 	}
 
 	fun unlock() {
@@ -84,7 +86,12 @@ class ChaptersBottomSheetMediator(
 		if (lockCounter < 0) {
 			lockCounter = 0
 		}
+		updateLock()
+	}
+
+	private fun updateLock() {
 		behavior.isDraggable = lockCounter <= 0
 		pager.isUserInputEnabled = lockCounter <= 0
+		tabLayout.setTabsEnabled(lockCounter <= 0)
 	}
 }

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
@@ -107,7 +109,7 @@ class DetailsActivity :
 
 		if (viewBinding.layoutBottom != null) {
 			val behavior = BottomSheetBehavior.from(checkNotNull(viewBinding.layoutBottom))
-			val bsMediator = ChaptersBottomSheetMediator(behavior, viewBinding.pager)
+			val bsMediator = ChaptersBottomSheetMediator(behavior, viewBinding.pager, viewBinding.tabs)
 			actionModeDelegate.addListener(bsMediator)
 			checkNotNull(viewBinding.layoutBsHeader).addOnLayoutChangeListener(bsMediator)
 			onBackPressedDispatcher.addCallback(bsMediator)
@@ -318,6 +320,18 @@ 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(' ')
@@ -363,8 +377,9 @@ class DetailsActivity :
 	}
 
 	private fun initPager() {
-		viewBinding.pager.recyclerView?.isNestedScrollingEnabled = false
 		val adapter = DetailsPagerAdapter(this)
+		viewBinding.pager.recyclerView?.isNestedScrollingEnabled = false
+		viewBinding.pager.offscreenPageLimit = 1
 		viewBinding.pager.adapter = adapter
 		TabLayoutMediator(viewBinding.tabs, viewBinding.pager, adapter).attach()
 		viewBinding.pager.setCurrentItem(settings.defaultDetailsTab, false)

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
@@ -70,6 +71,8 @@ import org.koitharu.kotatsu.scrobbling.common.domain.model.ScrobblingInfo
 import org.koitharu.kotatsu.scrobbling.common.ui.selector.ScrobblingSelectorSheet
 import org.koitharu.kotatsu.search.ui.MangaListActivity
 import org.koitharu.kotatsu.search.ui.SearchActivity
+import java.text.SimpleDateFormat
+import java.util.Date
 import javax.inject.Inject
 
 @AndroidEntryPoint
@@ -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()) {

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)
@@ -169,10 +172,21 @@ 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 +214,14 @@ 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
 

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

@@ -1,21 +1,23 @@
 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
 import org.koitharu.kotatsu.R
+import org.koitharu.kotatsu.core.model.formatNumber
 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
 
 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(android.R.attr.textColorPrimary))
+				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/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
@@ -57,12 +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
 		}
@@ -83,6 +94,17 @@ class ChaptersFragment :
 		super.onDestroyView()
 	}
 
+	override fun onPause() {
+		// required for BottomSheetBehavior
+		requireViewBinding().recyclerViewChapters.isNestedScrollingEnabled = false
+		super.onPause()
+	}
+
+	override fun onResume() {
+		requireViewBinding().recyclerViewChapters.isNestedScrollingEnabled = true
+		super.onResume()
+	}
+
 	override fun onItemClick(item: ChapterListItem, view: View) {
 		if (selectionController?.onItemClick(item.chapter.id) == true) {
 			return
@@ -132,6 +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()) {
@@ -147,7 +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
 			}
@@ -171,7 +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) ->
@@ -200,10 +239,10 @@ class ChaptersFragment :
 
 	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

@@ -88,6 +88,7 @@ class PagesFragment :
 			addItemDecoration(TypedListSpacingDecoration(context, false))
 			adapter = thumbnailsAdapter
 			setHasFixedSize(true)
+			isNestedScrollingEnabled = false
 			addOnLayoutChangeListener(spanResolver)
 			spanResolver?.setGridSize(settings.gridSize / 100f, this)
 			addOnScrollListener(ScrollListener().also { scrollListener = it })
@@ -112,6 +113,17 @@ class PagesFragment :
 		super.onDestroyView()
 	}
 
+	override fun onPause() {
+		// required for BottomSheetBehavior
+		requireViewBinding().recyclerView.isNestedScrollingEnabled = false
+		super.onPause()
+	}
+
+	override fun onResume() {
+		requireViewBinding().recyclerView.isNestedScrollingEnabled = true
+		super.onResume()
+	}
+
 	override fun onWindowInsetsChanged(insets: Insets) = Unit
 
 	override fun onItemClick(item: PageThumbnail, view: View) {

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

@@ -7,6 +7,7 @@ import android.view.MenuItem
 import androidx.core.view.MenuProvider
 import com.google.android.material.dialog.MaterialAlertDialogBuilder
 import org.koitharu.kotatsu.R
+import org.koitharu.kotatsu.core.util.ext.DIALOG_THEME_CENTERED
 import org.koitharu.kotatsu.settings.SettingsActivity
 
 class DownloadsMenuProvider(
@@ -41,10 +42,8 @@ class DownloadsMenuProvider(
 	}
 
 	private fun confirmCancelAll() {
-		MaterialAlertDialogBuilder(
-			context,
-			com.google.android.material.R.style.ThemeOverlay_Material3_MaterialAlertDialog_Centered,
-		).setTitle(R.string.cancel_all)
+		MaterialAlertDialogBuilder(context, DIALOG_THEME_CENTERED)
+			.setTitle(R.string.cancel_all)
 			.setMessage(R.string.cancel_all_downloads_confirm)
 			.setIcon(R.drawable.ic_cancel_multiple)
 			.setNegativeButton(android.R.string.cancel, null)
@@ -54,10 +53,8 @@ class DownloadsMenuProvider(
 	}
 
 	private fun confirmRemoveCompleted() {
-		MaterialAlertDialogBuilder(
-			context,
-			com.google.android.material.R.style.ThemeOverlay_Material3_MaterialAlertDialog_Centered,
-		).setTitle(R.string.remove_completed)
+		MaterialAlertDialogBuilder(context, DIALOG_THEME_CENTERED)
+			.setTitle(R.string.remove_completed)
 			.setMessage(R.string.remove_completed_downloads_confirm)
 			.setIcon(R.drawable.ic_clear_all)
 			.setNegativeButton(android.R.string.cancel, null)

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,
+						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

@@ -193,12 +193,12 @@ 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 +237,7 @@ 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 +377,26 @@ 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/ui/adapter/ExploreAdapterDelegates.kt

@@ -1,9 +1,7 @@
 package org.koitharu.kotatsu.explore.ui.adapter
 
-import android.graphics.Color
 import android.view.View
 import androidx.lifecycle.LifecycleOwner
-import androidx.swiperefreshlayout.widget.CircularProgressDrawable
 import coil.ImageLoader
 import com.hannesdorfmann.adapterdelegates4.dsl.adapterDelegateViewBinding
 import org.koitharu.kotatsu.R
@@ -15,10 +13,9 @@ import org.koitharu.kotatsu.core.ui.image.TrimTransformation
 import org.koitharu.kotatsu.core.ui.list.AdapterDelegateClickListenerAdapter
 import org.koitharu.kotatsu.core.ui.list.OnListItemClickListener
 import org.koitharu.kotatsu.core.util.ext.enqueueWith
-import org.koitharu.kotatsu.core.util.ext.getThemeColor
 import org.koitharu.kotatsu.core.util.ext.newImageRequest
-import org.koitharu.kotatsu.core.util.ext.resolveDp
 import org.koitharu.kotatsu.core.util.ext.setOnContextClickListenerCompat
+import org.koitharu.kotatsu.core.util.ext.setProgressIcon
 import org.koitharu.kotatsu.core.util.ext.source
 import org.koitharu.kotatsu.core.util.ext.textAndVisible
 import org.koitharu.kotatsu.databinding.ItemExploreButtonsBinding
@@ -30,7 +27,6 @@ import org.koitharu.kotatsu.explore.ui.model.MangaSourceItem
 import org.koitharu.kotatsu.explore.ui.model.RecommendationsItem
 import org.koitharu.kotatsu.list.ui.model.ListModel
 import org.koitharu.kotatsu.parsers.model.Manga
-import com.google.android.material.R as materialR
 
 fun exploreButtonsAD(
 	clickListener: View.OnClickListener,
@@ -45,16 +41,7 @@ fun exploreButtonsAD(
 
 	bind {
 		if (item.isRandomLoading) {
-			val icon = CircularProgressDrawable(context)
-			icon.strokeWidth = context.resources.resolveDp(2f)
-			icon.setColorSchemeColors(
-				context.getThemeColor(
-					materialR.attr.colorPrimary,
-					Color.DKGRAY,
-				),
-			)
-			binding.buttonRandom.icon = icon
-			icon.start()
+			binding.buttonRandom.setProgressIcon()
 		} else {
 			binding.buttonRandom.setIconResource(R.drawable.ic_dice)
 		}

app/src/main/kotlin/org/koitharu/kotatsu/favourites/data/FavouritesDao.kt

@@ -95,6 +95,22 @@ abstract class FavouritesDao {
 		return findCoversImpl(query)
 	}
 
+	suspend fun findCovers(order: ListSortOrder, limit: Int): List<Cover> {
+		val orderBy = getOrderBy(order)
+
+		@Language("RoomSql")
+		val query = SimpleSQLiteQuery(
+			"SELECT manga.cover_url AS url, manga.source AS source FROM favourites " +
+				"LEFT JOIN manga ON favourites.manga_id = manga.manga_id " +
+				"WHERE deleted_at = 0 GROUP BY manga.manga_id ORDER BY $orderBy LIMIT ?",
+			arrayOf<Any>(limit),
+		)
+		return findCoversImpl(query)
+	}
+
+	@Query("SELECT COUNT(DISTINCT manga_id) FROM favourites WHERE deleted_at = 0")
+	abstract fun observeMangaCount(): Flow<Int>
+
 	@Query("SELECT * FROM manga WHERE manga_id IN (SELECT manga_id FROM favourites WHERE deleted_at = 0)")
 	abstract suspend fun findAllManga(): List<MangaEntity>
 
@@ -175,9 +191,10 @@ abstract class FavouritesDao {
 		ListSortOrder.RATING -> "manga.rating DESC"
 		ListSortOrder.NEWEST -> "favourites.created_at DESC"
 		ListSortOrder.ALPHABETIC -> "manga.title ASC"
-		ListSortOrder.NEW_CHAPTERS -> "(SELECT chapters_new FROM tracks WHERE tracks.manga_id = manga.manga_id) DESC"
-		ListSortOrder.UPDATED, // for legacy support
-		ListSortOrder.PROGRESS -> "(SELECT percent FROM history WHERE history.manga_id = manga.manga_id) DESC"
+		ListSortOrder.ALPHABETIC_REVERSE -> "manga.title DESC"
+		ListSortOrder.NEW_CHAPTERS -> "IFNULL((SELECT chapters_new FROM tracks WHERE tracks.manga_id = manga.manga_id), 0) DESC"
+		ListSortOrder.PROGRESS -> "IFNULL((SELECT percent FROM history WHERE history.manga_id = manga.manga_id), 0) DESC"
+		ListSortOrder.LAST_READ -> "IFNULL((SELECT updated_at FROM history WHERE history.manga_id = manga.manga_id), 0) DESC"
 
 		else -> throw IllegalArgumentException("Sort order $sortOrder is not supported")
 	}

app/src/main/kotlin/org/koitharu/kotatsu/favourites/domain/FavouritesRepository.kt

@@ -60,6 +60,11 @@ class FavouritesRepository @Inject constructor(
 			.flatMapLatest { order -> observeAll(categoryId, order) }
 	}
 
+	fun observeMangaCount(): Flow<Int> {
+		return db.getFavouritesDao().observeMangaCount()
+			.distinctUntilChanged()
+	}
+
 	fun observeCategories(): Flow<List<FavouriteCategory>> {
 		return db.getFavouriteCategoriesDao().observeAll().mapItems {
 			it.toFavouriteCategory()
@@ -89,6 +94,10 @@ class FavouritesRepository @Inject constructor(
 			}
 	}
 
+	suspend fun getAllFavoritesCovers(order: ListSortOrder, limit: Int): List<Cover> {
+		return db.getFavouritesDao().findCovers(order, limit)
+	}
+
 	fun observeCategory(id: Long): Flow<FavouriteCategory?> {
 		return db.getFavouriteCategoriesDao().observe(id)
 			.map { it?.toFavouriteCategory() }

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

@@ -7,7 +7,7 @@ import androidx.recyclerview.widget.RecyclerView
 import com.google.android.material.dialog.MaterialAlertDialogBuilder
 import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.core.ui.list.ListSelectionController
-import com.google.android.material.R as materialR
+import org.koitharu.kotatsu.core.util.ext.DIALOG_THEME_CENTERED
 
 class CategoriesSelectionCallback(
 	private val recyclerView: RecyclerView,
@@ -75,7 +75,7 @@ class CategoriesSelectionCallback(
 
 	private fun confirmDeleteCategories(ids: Set<Long>, mode: ActionMode) {
 		val context = recyclerView.context
-		MaterialAlertDialogBuilder(context, materialR.style.ThemeOverlay_Material3_MaterialAlertDialog_Centered)
+		MaterialAlertDialogBuilder(context, DIALOG_THEME_CENTERED)
 			.setMessage(R.string.categories_delete_confirm)
 			.setTitle(R.string.remove_category)
 			.setIcon(R.drawable.ic_delete)

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

@@ -76,7 +76,13 @@ class FavouriteCategoriesActivity :
 		}
 	}
 
-	override fun onItemClick(item: FavouriteCategory, view: View) {
+	override fun onItemClick(item: FavouriteCategory?, view: View) {
+		if (item == null) {
+			if (selectionController.count == 0) {
+				startActivity(FavouritesActivity.newIntent(view.context))
+			}
+			return
+		}
 		if (selectionController.onItemClick(item.id)) {
 			return
 		}
@@ -92,8 +98,12 @@ class FavouriteCategoriesActivity :
 		startActivity(intent)
 	}
 
-	override fun onItemLongClick(item: FavouriteCategory, view: View): Boolean {
-		return selectionController.onItemLongClick(item.id)
+	override fun onItemLongClick(item: FavouriteCategory?, view: View): Boolean {
+		return item != null && selectionController.onItemLongClick(item.id)
+	}
+
+	override fun onShowAllClick(isChecked: Boolean) {
+		viewModel.setAllCategoriesVisible(isChecked)
 	}
 
 	override fun onDragHandleTouch(holder: RecyclerView.ViewHolder): Boolean {

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

@@ -5,9 +5,11 @@ import androidx.recyclerview.widget.RecyclerView
 import org.koitharu.kotatsu.core.model.FavouriteCategory
 import org.koitharu.kotatsu.core.ui.list.OnListItemClickListener
 
-interface FavouriteCategoriesListListener : OnListItemClickListener<FavouriteCategory> {
+interface FavouriteCategoriesListListener : OnListItemClickListener<FavouriteCategory?> {
 
 	fun onDragHandleTouch(holder: RecyclerView.ViewHolder): Boolean
 
 	fun onEditClick(item: FavouriteCategory, view: View)
+
+	fun onShowAllClick(isChecked: Boolean)
 }

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

@@ -5,17 +5,21 @@ import dagger.hilt.android.lifecycle.HiltViewModel
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.Job
 import kotlinx.coroutines.cancelAndJoin
+import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.SharingStarted
-import kotlinx.coroutines.flow.map
+import kotlinx.coroutines.flow.combine
+import kotlinx.coroutines.flow.mapLatest
 import kotlinx.coroutines.flow.stateIn
 import kotlinx.coroutines.plus
 import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.core.model.FavouriteCategory
 import org.koitharu.kotatsu.core.prefs.AppSettings
+import org.koitharu.kotatsu.core.prefs.observeAsFlow
 import org.koitharu.kotatsu.core.ui.BaseViewModel
 import org.koitharu.kotatsu.core.util.ext.requireValue
 import org.koitharu.kotatsu.favourites.domain.FavouritesRepository
 import org.koitharu.kotatsu.favourites.domain.model.Cover
+import org.koitharu.kotatsu.favourites.ui.categories.adapter.AllCategoriesListModel
 import org.koitharu.kotatsu.favourites.ui.categories.adapter.CategoryListModel
 import org.koitharu.kotatsu.list.ui.model.EmptyState
 import org.koitharu.kotatsu.list.ui.model.ListModel
@@ -30,9 +34,13 @@ class FavouritesCategoriesViewModel @Inject constructor(
 
 	private var commitJob: Job? = null
 
-	val content = repository.observeCategoriesWithCovers()
-		.map { it.toUiList() }
-		.stateIn(viewModelScope + Dispatchers.Default, SharingStarted.Eagerly, listOf(LoadingState))
+	val content = combine(
+		repository.observeCategoriesWithCovers(),
+		observeAllCategories(),
+		settings.observeAsFlow(AppSettings.KEY_ALL_FAVOURITES_VISIBLE) { isAllFavouritesVisible },
+	) { cats, all, showAll ->
+		cats.toUiList(all, showAll)
+	}.stateIn(viewModelScope + Dispatchers.Default, SharingStarted.Eagerly, listOf(LoadingState))
 
 	fun deleteCategories(ids: Set<Long>) {
 		launchJob(Dispatchers.Default) {
@@ -74,21 +82,46 @@ class FavouritesCategoriesViewModel @Inject constructor(
 		}
 	}
 
-	private fun Map<FavouriteCategory, List<Cover>>.toUiList(): List<ListModel> = map { (category, covers) ->
-		CategoryListModel(
-			mangaCount = covers.size,
-			covers = covers.take(3),
-			category = category,
-			isTrackerEnabled = settings.isTrackerEnabled && AppSettings.TRACK_FAVOURITES in settings.trackSources,
-		)
-	}.ifEmpty {
-		listOf(
-			EmptyState(
-				icon = R.drawable.ic_empty_favourites,
-				textPrimary = R.string.text_empty_holder_primary,
-				textSecondary = R.string.empty_favourite_categories,
-				actionStringRes = 0,
+	private fun Map<FavouriteCategory, List<Cover>>.toUiList(
+		allFavorites: Pair<Int, List<Cover>>,
+		showAll: Boolean
+	): List<ListModel> {
+		if (isEmpty()) {
+			return listOf(
+				EmptyState(
+					icon = R.drawable.ic_empty_favourites,
+					textPrimary = R.string.text_empty_holder_primary,
+					textSecondary = R.string.empty_favourite_categories,
+					actionStringRes = 0,
+				),
+			)
+		}
+		val result = ArrayList<ListModel>(size + 1)
+		result.add(
+			AllCategoriesListModel(
+				mangaCount = allFavorites.first,
+				covers = allFavorites.second,
+				isVisible = showAll,
 			),
 		)
+		mapTo(result) { (category, covers) ->
+			CategoryListModel(
+				mangaCount = covers.size,
+				covers = covers.take(3),
+				category = category,
+				isTrackerEnabled = settings.isTrackerEnabled && AppSettings.TRACK_FAVOURITES in settings.trackSources,
+			)
+		}
+		return result
+	}
+
+	private fun observeAllCategories(): Flow<Pair<Int, List<Cover>>> {
+		return settings.observeAsFlow(AppSettings.KEY_FAVORITES_ORDER) {
+			allFavoritesSortOrder
+		}.mapLatest { order ->
+			repository.getAllFavoritesCovers(order, limit = 3)
+		}.combine(repository.observeMangaCount()) { covers, count ->
+			count to covers
+		}
 	}
 }

app/src/main/kotlin/org/koitharu/kotatsu/favourites/ui/categories/adapter/AllCategoriesListModel.kt

@@ -0,0 +1,24 @@
+package org.koitharu.kotatsu.favourites.ui.categories.adapter
+
+import org.koitharu.kotatsu.favourites.domain.model.Cover
+import org.koitharu.kotatsu.list.ui.ListModelDiffCallback
+import org.koitharu.kotatsu.list.ui.model.ListModel
+
+data class AllCategoriesListModel(
+	val mangaCount: Int,
+	val covers: List<Cover>,
+	val isVisible: Boolean,
+) : ListModel {
+
+	override fun areItemsTheSame(other: ListModel): Boolean {
+		return other is AllCategoriesListModel
+	}
+
+	override fun getChangePayload(previousState: ListModel): Any? {
+		return if (previousState is AllCategoriesListModel && previousState.isVisible != isVisible) {
+			ListModelDiffCallback.PAYLOAD_CHECKED_CHANGED
+		} else {
+			super.getChangePayload(previousState)
+		}
+	}
+}

app/src/main/kotlin/org/koitharu/kotatsu/favourites/ui/categories/adapter/CategoriesAdapter.kt

@@ -19,6 +19,7 @@ class CategoriesAdapter(
 
 	init {
 		addDelegate(ListItemType.CATEGORY_LARGE, categoryAD(coil, lifecycleOwner, onItemClickListener))
+		addDelegate(ListItemType.NAV_ITEM, allCategoriesAD(coil, lifecycleOwner, onItemClickListener))
 		addDelegate(ListItemType.STATE_EMPTY, emptyStateListAD(coil, lifecycleOwner, listListener))
 		addDelegate(ListItemType.STATE_LOADING, loadingStateAD())
 	}

app/src/main/kotlin/org/koitharu/kotatsu/favourites/ui/categories/adapter/CategoryAD.kt

@@ -21,6 +21,7 @@ import org.koitharu.kotatsu.core.util.ext.getAnimationDuration
 import org.koitharu.kotatsu.core.util.ext.getThemeColor
 import org.koitharu.kotatsu.core.util.ext.newImageRequest
 import org.koitharu.kotatsu.core.util.ext.source
+import org.koitharu.kotatsu.databinding.ItemCategoriesAllBinding
 import org.koitharu.kotatsu.databinding.ItemCategoryBinding
 import org.koitharu.kotatsu.favourites.ui.categories.FavouriteCategoriesListListener
 import org.koitharu.kotatsu.list.ui.model.ListModel
@@ -92,3 +93,68 @@ fun categoryAD(
 		}
 	}
 }
+
+fun allCategoriesAD(
+	coil: ImageLoader,
+	lifecycleOwner: LifecycleOwner,
+	clickListener: FavouriteCategoriesListListener,
+) = adapterDelegateViewBinding<AllCategoriesListModel, ListModel, ItemCategoriesAllBinding>(
+	{ inflater, parent -> ItemCategoriesAllBinding.inflate(inflater, parent, false) },
+) {
+	val eventListener = OnClickListener { v ->
+		if (v.id == R.id.imageView_visible) {
+			clickListener.onShowAllClick(!item.isVisible)
+		} else {
+			clickListener.onItemClick(null, v)
+		}
+	}
+	val backgroundColor = context.getThemeColor(android.R.attr.colorBackground)
+	ImageViewCompat.setImageTintList(
+		binding.imageViewCover3,
+		ColorStateList.valueOf(ColorUtils.setAlphaComponent(backgroundColor, 153)),
+	)
+	ImageViewCompat.setImageTintList(
+		binding.imageViewCover2,
+		ColorStateList.valueOf(ColorUtils.setAlphaComponent(backgroundColor, 76)),
+	)
+	binding.imageViewCover2.backgroundTintList =
+		ColorStateList.valueOf(ColorUtils.setAlphaComponent(backgroundColor, 76))
+	binding.imageViewCover3.backgroundTintList =
+		ColorStateList.valueOf(ColorUtils.setAlphaComponent(backgroundColor, 153))
+	val fallback = ColorDrawable(Color.TRANSPARENT)
+	val coverViews = arrayOf(binding.imageViewCover1, binding.imageViewCover2, binding.imageViewCover3)
+	val crossFadeDuration = context.getAnimationDuration(R.integer.config_defaultAnimTime).toInt()
+	itemView.setOnClickListener(eventListener)
+	binding.imageViewVisible.setOnClickListener(eventListener)
+
+	bind {
+		binding.textViewSubtitle.text = if (item.mangaCount == 0) {
+			getString(R.string.empty)
+		} else {
+			context.resources.getQuantityString(
+				R.plurals.items,
+				item.mangaCount,
+				item.mangaCount,
+			)
+		}
+		binding.imageViewVisible.setImageResource(
+			if (item.isVisible) {
+				R.drawable.ic_eye
+			} else {
+				R.drawable.ic_eye_off
+			},
+		)
+		repeat(coverViews.size) { i ->
+			val cover = item.covers.getOrNull(i)
+			coverViews[i].newImageRequest(lifecycleOwner, cover?.url)?.run {
+				placeholder(R.drawable.ic_placeholder)
+				fallback(fallback)
+				source(cover?.mangaSource)
+				crossfade(crossFadeDuration * (i + 1))
+				error(R.drawable.ic_error_placeholder)
+				allowRgb565(true)
+				enqueueWith(coil)
+			}
+		}
+	}
+}

app/src/main/kotlin/org/koitharu/kotatsu/favourites/ui/container/FavouriteTabModel.kt

@@ -4,7 +4,7 @@ import org.koitharu.kotatsu.list.ui.model.ListModel
 
 data class FavouriteTabModel(
 	val id: Long,
-	val title: String,
+	val title: String?,
 ) : ListModel {
 
 	override fun areItemsTheSame(other: ListModel): Boolean {

app/src/main/kotlin/org/koitharu/kotatsu/favourites/ui/container/FavouriteTabPopupMenuProvider.kt

@@ -0,0 +1,53 @@
+package org.koitharu.kotatsu.favourites.ui.container
+
+import android.content.Context
+import android.view.Menu
+import android.view.MenuInflater
+import android.view.MenuItem
+import androidx.core.view.MenuProvider
+import com.google.android.material.dialog.MaterialAlertDialogBuilder
+import org.koitharu.kotatsu.R
+import org.koitharu.kotatsu.core.util.ext.DIALOG_THEME_CENTERED
+import org.koitharu.kotatsu.favourites.ui.categories.edit.FavouritesCategoryEditActivity
+import org.koitharu.kotatsu.favourites.ui.list.FavouritesListFragment.Companion.NO_ID
+
+class FavouriteTabPopupMenuProvider(
+	private val context: Context,
+	private val viewModel: FavouritesContainerViewModel,
+	private val categoryId: Long
+) : MenuProvider {
+
+	override fun onCreateMenu(menu: Menu, menuInflater: MenuInflater) {
+		val menuResId = if (categoryId == NO_ID) {
+			R.menu.popup_fav_tab_all
+		} else {
+			R.menu.popup_fav_tab
+		}
+		menuInflater.inflate(menuResId, menu)
+	}
+
+	override fun onMenuItemSelected(menuItem: MenuItem): Boolean {
+		when (menuItem.itemId) {
+			R.id.action_hide -> viewModel.hide(categoryId)
+			R.id.action_edit -> context.startActivity(
+				FavouritesCategoryEditActivity.newIntent(context, categoryId),
+			)
+
+			R.id.action_delete -> confirmDelete()
+
+			else -> return false
+		}
+		return true
+	}
+
+	private fun confirmDelete() {
+		MaterialAlertDialogBuilder(context, DIALOG_THEME_CENTERED)
+			.setMessage(R.string.categories_delete_confirm)
+			.setTitle(R.string.remove_category)
+			.setIcon(R.drawable.ic_delete)
+			.setNegativeButton(android.R.string.cancel, null)
+			.setPositiveButton(R.string.remove) { _, _ ->
+				viewModel.deleteCategory(categoryId)
+			}.show()
+	}
+}

app/src/main/kotlin/org/koitharu/kotatsu/favourites/ui/container/FavouritesContainerAdapter.kt

@@ -1,33 +1,46 @@
 package org.koitharu.kotatsu.favourites.ui.container
 
 import androidx.fragment.app.Fragment
-import androidx.fragment.app.FragmentManager
-import androidx.fragment.app.FragmentStatePagerAdapter
+import androidx.recyclerview.widget.AdapterListUpdateCallback
+import androidx.recyclerview.widget.AsyncDifferConfig
+import androidx.recyclerview.widget.AsyncListDiffer
+import androidx.viewpager2.adapter.FragmentStateAdapter
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.asExecutor
 import kotlinx.coroutines.flow.FlowCollector
+import org.koitharu.kotatsu.core.util.ContinuationResumeRunnable
 import org.koitharu.kotatsu.favourites.ui.list.FavouritesListFragment
-import org.koitharu.kotatsu.parsers.util.replaceWith
+import org.koitharu.kotatsu.list.ui.ListModelDiffCallback
+import kotlin.coroutines.suspendCoroutine
 
-@Suppress("DEPRECATION")
-class FavouritesContainerAdapter(
-	fm: FragmentManager
-) : FragmentStatePagerAdapter(fm, BEHAVIOR_RESUME_ONLY_CURRENT_FRAGMENT),
+class FavouritesContainerAdapter(fragment: Fragment) : FragmentStateAdapter(fragment),
 	FlowCollector<List<FavouriteTabModel>> {
 
-	private val dataSet = ArrayList<FavouriteTabModel>()
+	private val differ = AsyncListDiffer(
+		AdapterListUpdateCallback(this),
+		AsyncDifferConfig.Builder(ListModelDiffCallback<FavouriteTabModel>())
+			.setBackgroundThreadExecutor(Dispatchers.Default.limitedParallelism(2).asExecutor())
+			.build(),
+	)
 
-	override fun getCount(): Int = dataSet.size
+	override fun getItemCount(): Int = differ.currentList.size
 
-	override fun getItem(position: Int): Fragment {
-		val item = dataSet[position]
+	override fun getItemId(position: Int): Long {
+		return differ.currentList[position].id
+	}
+
+	override fun containsItem(itemId: Long): Boolean {
+		return differ.currentList.any { x -> x.id == itemId }
+	}
+
+	override fun createFragment(position: Int): Fragment {
+		val item = differ.currentList[position]
 		return FavouritesListFragment.newInstance(item.id)
 	}
 
-	override fun getPageTitle(position: Int): CharSequence {
-		return dataSet[position].title
+	override suspend fun emit(value: List<FavouriteTabModel>) = suspendCoroutine { cont ->
+		differ.submitList(value, ContinuationResumeRunnable(cont))
 	}
 
-	override suspend fun emit(value: List<FavouriteTabModel>) {
-		dataSet.replaceWith(value)
-		notifyDataSetChanged()
-	}
+	fun getItem(position: Int): FavouriteTabModel = differ.currentList[position]
 }

app/src/main/kotlin/org/koitharu/kotatsu/favourites/ui/container/FavouritesContainerAdapter2.kt

@@ -1,55 +0,0 @@
-package org.koitharu.kotatsu.favourites.ui.container
-
-import androidx.fragment.app.Fragment
-import androidx.recyclerview.widget.AdapterListUpdateCallback
-import androidx.recyclerview.widget.AsyncDifferConfig
-import androidx.recyclerview.widget.AsyncListDiffer
-import androidx.viewpager2.adapter.FragmentStateAdapter
-import com.google.android.material.tabs.TabLayout
-import com.google.android.material.tabs.TabLayoutMediator.TabConfigurationStrategy
-import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.asExecutor
-import kotlinx.coroutines.flow.FlowCollector
-import org.koitharu.kotatsu.core.util.ContinuationResumeRunnable
-import org.koitharu.kotatsu.favourites.ui.list.FavouritesListFragment
-import org.koitharu.kotatsu.list.ui.ListModelDiffCallback
-import kotlin.coroutines.suspendCoroutine
-
-// FIXME migrate to ViewPager2 in FavouritesContainerFragment
-class FavouritesContainerAdapter2(fragment: Fragment) :
-	FragmentStateAdapter(fragment.childFragmentManager, fragment.viewLifecycleOwner.lifecycle),
-	TabConfigurationStrategy,
-	FlowCollector<List<FavouriteTabModel>> {
-
-	private val differ = AsyncListDiffer(
-		AdapterListUpdateCallback(this),
-		AsyncDifferConfig.Builder(ListModelDiffCallback<FavouriteTabModel>())
-			.setBackgroundThreadExecutor(Dispatchers.Default.limitedParallelism(2).asExecutor())
-			.build(),
-	)
-
-	override fun getItemCount(): Int = differ.currentList.size
-
-	override fun getItemId(position: Int): Long {
-		return differ.currentList[position].id
-	}
-
-	override fun containsItem(itemId: Long): Boolean {
-		return differ.currentList.any { x -> x.id == itemId }
-	}
-
-	override fun createFragment(position: Int): Fragment {
-		val item = differ.currentList[position]
-		return FavouritesListFragment.newInstance(item.id)
-	}
-
-	override fun onConfigureTab(tab: TabLayout.Tab, position: Int) {
-		val item = differ.currentList[position]
-		tab.text = item.title
-		tab.tag = item
-	}
-
-	override suspend fun emit(value: List<FavouriteTabModel>) = suspendCoroutine { cont ->
-		differ.submitList(value, ContinuationResumeRunnable(cont))
-	}
-}

app/src/main/kotlin/org/koitharu/kotatsu/favourites/ui/container/FavouritesContainerFragment.kt

@@ -12,14 +12,18 @@ import androidx.core.view.isVisible
 import androidx.core.view.updatePadding
 import androidx.fragment.app.viewModels
 import coil.ImageLoader
+import com.google.android.material.tabs.TabLayoutMediator
 import dagger.hilt.android.AndroidEntryPoint
 import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.core.ui.BaseFragment
 import org.koitharu.kotatsu.core.ui.util.ActionModeListener
+import org.koitharu.kotatsu.core.ui.util.ReversibleActionObserver
 import org.koitharu.kotatsu.core.util.ext.addMenuProvider
 import org.koitharu.kotatsu.core.util.ext.enqueueWith
 import org.koitharu.kotatsu.core.util.ext.newImageRequest
 import org.koitharu.kotatsu.core.util.ext.observe
+import org.koitharu.kotatsu.core.util.ext.observeEvent
+import org.koitharu.kotatsu.core.util.ext.recyclerView
 import org.koitharu.kotatsu.core.util.ext.setTabsEnabled
 import org.koitharu.kotatsu.core.util.ext.setTextAndVisible
 import org.koitharu.kotatsu.databinding.FragmentFavouritesContainerBinding
@@ -43,15 +47,21 @@ class FavouritesContainerFragment : BaseFragment<FragmentFavouritesContainerBind
 
 	override fun onViewBindingCreated(binding: FragmentFavouritesContainerBinding, savedInstanceState: Bundle?) {
 		super.onViewBindingCreated(binding, savedInstanceState)
-		val adapter = FavouritesContainerAdapter(childFragmentManager)
-		binding.pager.adapter = adapter
-		binding.tabs.setupWithViewPager(binding.pager)
+		val pagerAdapter = FavouritesContainerAdapter(this)
+		binding.pager.adapter = pagerAdapter
 		binding.pager.offscreenPageLimit = 1
+		binding.pager.recyclerView?.isNestedScrollingEnabled = false
+		TabLayoutMediator(
+			binding.tabs,
+			binding.pager,
+			FavouritesTabConfigurationStrategy(pagerAdapter, viewModel),
+		).attach()
 		binding.stubEmpty.setOnInflateListener(this)
 		actionModeDelegate.addListener(this)
-		viewModel.categories.observe(viewLifecycleOwner, adapter)
+		viewModel.categories.observe(viewLifecycleOwner, pagerAdapter)
 		viewModel.isEmpty.observe(viewLifecycleOwner, ::onEmptyStateChanged)
 		addMenuProvider(FavouritesContainerMenuProvider(binding.root.context))
+		viewModel.onActionDone.observeEvent(viewLifecycleOwner, ReversibleActionObserver(binding.pager))
 	}
 
 	override fun onDestroyView() {

app/src/main/kotlin/org/koitharu/kotatsu/favourites/ui/container/FavouritesContainerViewModel.kt

@@ -4,30 +4,80 @@ import androidx.lifecycle.viewModelScope
 import dagger.hilt.android.lifecycle.HiltViewModel
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.flow.SharingStarted
-import kotlinx.coroutines.flow.distinctUntilChanged
+import kotlinx.coroutines.flow.combine
 import kotlinx.coroutines.flow.filterNotNull
 import kotlinx.coroutines.flow.map
 import kotlinx.coroutines.flow.stateIn
 import kotlinx.coroutines.plus
+import org.koitharu.kotatsu.R
+import org.koitharu.kotatsu.core.model.FavouriteCategory
+import org.koitharu.kotatsu.core.prefs.AppSettings
+import org.koitharu.kotatsu.core.prefs.observeAsFlow
 import org.koitharu.kotatsu.core.ui.BaseViewModel
-import org.koitharu.kotatsu.core.util.ext.mapItems
+import org.koitharu.kotatsu.core.ui.util.ReversibleAction
+import org.koitharu.kotatsu.core.ui.util.ReversibleHandle
+import org.koitharu.kotatsu.core.util.ext.MutableEventFlow
+import org.koitharu.kotatsu.core.util.ext.call
 import org.koitharu.kotatsu.favourites.domain.FavouritesRepository
+import org.koitharu.kotatsu.favourites.ui.list.FavouritesListFragment.Companion.NO_ID
 import javax.inject.Inject
 
 @HiltViewModel
 class FavouritesContainerViewModel @Inject constructor(
-	favouritesRepository: FavouritesRepository,
+	private val settings: AppSettings,
+	private val favouritesRepository: FavouritesRepository,
 ) : BaseViewModel() {
 
+	val onActionDone = MutableEventFlow<ReversibleAction>()
+
 	private val categoriesStateFlow = favouritesRepository.observeCategoriesForLibrary()
 		.stateIn(viewModelScope + Dispatchers.Default, SharingStarted.Eagerly, null)
 
-	val categories = categoriesStateFlow.filterNotNull()
-		.mapItems { FavouriteTabModel(it.id, it.title) }
-		.distinctUntilChanged()
-		.stateIn(viewModelScope + Dispatchers.Default, SharingStarted.Eagerly, emptyList())
+	val categories = combine(
+		categoriesStateFlow.filterNotNull(),
+		observeAllFavouritesVisibility(),
+	) { list, showAll ->
+		list.toUi(showAll)
+	}.stateIn(viewModelScope + Dispatchers.Default, SharingStarted.Eagerly, emptyList())
 
 	val isEmpty = categoriesStateFlow.map {
 		it?.isEmpty() == true
 	}.stateIn(viewModelScope + Dispatchers.Default, SharingStarted.Eagerly, false)
+
+	private fun List<FavouriteCategory>.toUi(showAll: Boolean): List<FavouriteTabModel> {
+		if (isEmpty()) {
+			return emptyList()
+		}
+		val result = ArrayList<FavouriteTabModel>(if (showAll) size + 1 else size)
+		if (showAll) {
+			result.add(FavouriteTabModel(NO_ID, null))
+		}
+		mapTo(result) { FavouriteTabModel(it.id, it.title) }
+		return result
+	}
+
+	fun hide(categoryId: Long) {
+		launchJob(Dispatchers.Default) {
+			if (categoryId == NO_ID) {
+				settings.isAllFavouritesVisible = false
+			} else {
+				favouritesRepository.updateCategory(categoryId, isVisibleInLibrary = false)
+				val reverse = ReversibleHandle {
+					favouritesRepository.updateCategory(categoryId, isVisibleInLibrary = true)
+				}
+				onActionDone.call(ReversibleAction(R.string.category_hidden_done, reverse))
+			}
+		}
+	}
+
+	fun deleteCategory(categoryId: Long) {
+		launchJob(Dispatchers.Default) {
+			favouritesRepository.removeCategories(setOf(categoryId))
+		}
+	}
+
+	private fun observeAllFavouritesVisibility() = settings.observeAsFlow(
+		key = AppSettings.KEY_ALL_FAVOURITES_VISIBLE,
+		valueProducer = { isAllFavouritesVisible },
+	)
 }

app/src/main/kotlin/org/koitharu/kotatsu/favourites/ui/container/FavouritesTabConfigurationStrategy.kt

@@ -0,0 +1,19 @@
+package org.koitharu.kotatsu.favourites.ui.container
+
+import com.google.android.material.tabs.TabLayout
+import com.google.android.material.tabs.TabLayoutMediator.TabConfigurationStrategy
+import org.koitharu.kotatsu.R
+import org.koitharu.kotatsu.core.ui.util.PopupMenuMediator
+
+class FavouritesTabConfigurationStrategy(
+	private val adapter: FavouritesContainerAdapter,
+	private val viewModel: FavouritesContainerViewModel,
+) : TabConfigurationStrategy {
+
+	override fun onConfigureTab(tab: TabLayout.Tab, position: Int) {
+		val item = adapter.getItem(position)
+		tab.text = item.title ?: tab.view.context.getString(R.string.all_favourites)
+		tab.tag = item
+		PopupMenuMediator(FavouriteTabPopupMenuProvider(tab.view.context, viewModel, item.id)).attach(tab.view)
+	}
+}

app/src/main/kotlin/org/koitharu/kotatsu/favourites/ui/list/FavouritesListFragment.kt

@@ -7,10 +7,10 @@ import android.view.View
 import androidx.appcompat.view.ActionMode
 import androidx.appcompat.widget.PopupMenu
 import androidx.fragment.app.viewModels
+import com.google.android.material.dialog.MaterialAlertDialogBuilder
 import dagger.hilt.android.AndroidEntryPoint
 import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.core.ui.list.ListSelectionController
-import org.koitharu.kotatsu.core.util.ext.addMenuProvider
 import org.koitharu.kotatsu.core.util.ext.sortedByOrdinal
 import org.koitharu.kotatsu.core.util.ext.withArgs
 import org.koitharu.kotatsu.databinding.FragmentListBinding
@@ -30,9 +30,7 @@ class FavouritesListFragment : MangaListFragment(), PopupMenu.OnMenuItemClickLis
 
 	override fun onViewBindingCreated(binding: FragmentListBinding, savedInstanceState: Bundle?) {
 		super.onViewBindingCreated(binding, savedInstanceState)
-		if (viewModel.categoryId != NO_ID) {
-			addMenuProvider(FavouritesListMenuProvider(binding.root.context, viewModel))
-		}
+		binding.recyclerView.isVP2BugWorkaroundEnabled = true
 	}
 
 	override fun onScrolledToEnd() = Unit
@@ -73,6 +71,18 @@ class FavouritesListFragment : MangaListFragment(), PopupMenu.OnMenuItemClickLis
 				true
 			}
 
+			R.id.action_mark_current -> {
+				MaterialAlertDialogBuilder(context ?: return false)
+					.setTitle(item.title)
+					.setMessage(R.string.mark_as_completed_prompt)
+					.setNegativeButton(android.R.string.cancel, null)
+					.setPositiveButton(android.R.string.ok) { _, _ ->
+						viewModel.markAsRead(selectedItems)
+						mode.finish()
+					}.show()
+				true
+			}
+
 			else -> super.onActionItemClicked(controller, mode, item)
 		}
 	}

app/src/main/kotlin/org/koitharu/kotatsu/favourites/ui/list/FavouritesListMenuProvider.kt

@@ -1,30 +0,0 @@
-package org.koitharu.kotatsu.favourites.ui.list
-
-import android.content.Context
-import android.view.Menu
-import android.view.MenuInflater
-import android.view.MenuItem
-import androidx.core.view.MenuProvider
-import org.koitharu.kotatsu.R
-import org.koitharu.kotatsu.favourites.ui.categories.edit.FavouritesCategoryEditActivity
-
-class FavouritesListMenuProvider(
-	private val context: Context,
-	private val viewModel: FavouritesListViewModel,
-) : MenuProvider {
-
-	override fun onCreateMenu(menu: Menu, menuInflater: MenuInflater) {
-		menuInflater.inflate(R.menu.opt_favourites, menu)
-	}
-
-	override fun onMenuItemSelected(menuItem: MenuItem): Boolean {
-		return when (menuItem.itemId) {
-			R.id.action_edit -> {
-				context.startActivity(FavouritesCategoryEditActivity.newIntent(context, viewModel.categoryId))
-				true
-			}
-
-			else -> false
-		}
-	}
-}

app/src/main/kotlin/org/koitharu/kotatsu/favourites/ui/list/FavouritesListViewModel.kt

@@ -9,6 +9,8 @@ import kotlinx.coroutines.flow.SharingStarted
 import kotlinx.coroutines.flow.StateFlow
 import kotlinx.coroutines.flow.catch
 import kotlinx.coroutines.flow.combine
+import kotlinx.coroutines.flow.filterNotNull
+import kotlinx.coroutines.flow.flatMapLatest
 import kotlinx.coroutines.flow.map
 import kotlinx.coroutines.flow.stateIn
 import kotlinx.coroutines.plus
@@ -21,6 +23,7 @@ import org.koitharu.kotatsu.download.ui.worker.DownloadWorker
 import org.koitharu.kotatsu.favourites.domain.FavouritesRepository
 import org.koitharu.kotatsu.favourites.ui.list.FavouritesListFragment.Companion.ARG_CATEGORY_ID
 import org.koitharu.kotatsu.favourites.ui.list.FavouritesListFragment.Companion.NO_ID
+import org.koitharu.kotatsu.history.domain.MarkAsReadUseCase
 import org.koitharu.kotatsu.list.domain.ListExtraProvider
 import org.koitharu.kotatsu.list.domain.ListSortOrder
 import org.koitharu.kotatsu.list.ui.MangaListViewModel
@@ -28,6 +31,7 @@ import org.koitharu.kotatsu.list.ui.model.EmptyState
 import org.koitharu.kotatsu.list.ui.model.LoadingState
 import org.koitharu.kotatsu.list.ui.model.toErrorState
 import org.koitharu.kotatsu.list.ui.model.toUi
+import org.koitharu.kotatsu.parsers.model.Manga
 import javax.inject.Inject
 
 @HiltViewModel
@@ -35,31 +39,37 @@ class FavouritesListViewModel @Inject constructor(
 	savedStateHandle: SavedStateHandle,
 	private val repository: FavouritesRepository,
 	private val listExtraProvider: ListExtraProvider,
+	private val markAsReadUseCase: MarkAsReadUseCase,
 	settings: AppSettings,
 	downloadScheduler: DownloadWorker.Scheduler,
 ) : MangaListViewModel(settings, downloadScheduler) {
 
 	val categoryId: Long = savedStateHandle[ARG_CATEGORY_ID] ?: NO_ID
+	private val refreshTrigger = MutableStateFlow(Any())
 
 	override val listMode = settings.observeAsFlow(AppSettings.KEY_LIST_MODE_FAVORITES) { favoritesListMode }
 		.stateIn(viewModelScope + Dispatchers.Default, SharingStarted.Eagerly, settings.favoritesListMode)
 
 	val sortOrder: StateFlow<ListSortOrder?> = if (categoryId == NO_ID) {
-		MutableStateFlow(null)
+		settings.observeAsFlow(AppSettings.KEY_FAVORITES_ORDER) {
+			allFavoritesSortOrder
+		}
 	} else {
 		repository.observeCategory(categoryId)
 			.map { it?.order }
-			.stateIn(viewModelScope + Dispatchers.Default, SharingStarted.Eagerly, null)
-	}
+	}.stateIn(viewModelScope + Dispatchers.Default, SharingStarted.Eagerly, null)
 
 	override val content = combine(
 		if (categoryId == NO_ID) {
-			repository.observeAll(ListSortOrder.NEWEST)
+			sortOrder.filterNotNull().flatMapLatest {
+				repository.observeAll(it)
+			}
 		} else {
 			repository.observeAll(categoryId)
 		},
 		listMode,
-	) { list, mode ->
+		refreshTrigger,
+	) { list, mode, _ ->
 		when {
 			list.isEmpty() -> listOf(
 				EmptyState(
@@ -80,10 +90,19 @@ class FavouritesListViewModel @Inject constructor(
 		emit(listOf(it.toErrorState(canRetry = false)))
 	}.stateIn(viewModelScope + Dispatchers.Default, SharingStarted.Eagerly, listOf(LoadingState))
 
-	override fun onRefresh() = Unit
+	override fun onRefresh() {
+		refreshTrigger.value = Any()
+	}
 
 	override fun onRetry() = Unit
 
+	fun markAsRead(items: Set<Manga>) {
+		launchLoadingJob(Dispatchers.Default) {
+			markAsReadUseCase(items)
+			onRefresh()
+		}
+	}
+
 	fun removeFromFavourites(ids: Set<Long>) {
 		if (ids.isEmpty()) {
 			return

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

@@ -35,11 +35,12 @@ abstract class HistoryDao {
 
 	fun observeAll(order: ListSortOrder): Flow<List<HistoryWithManga>> {
 		val orderBy = when (order) {
-			ListSortOrder.UPDATED -> "history.updated_at DESC"
+			ListSortOrder.LAST_READ -> "history.updated_at DESC"
 			ListSortOrder.NEWEST -> "history.created_at DESC"
 			ListSortOrder.PROGRESS -> "history.percent DESC"
 			ListSortOrder.ALPHABETIC -> "manga.title"
-			ListSortOrder.NEW_CHAPTERS -> "(SELECT chapters_new FROM tracks WHERE tracks.manga_id = manga.manga_id) DESC"
+			ListSortOrder.ALPHABETIC_REVERSE -> "manga.title DESC"
+			ListSortOrder.NEW_CHAPTERS -> "IFNULL((SELECT chapters_new FROM tracks WHERE tracks.manga_id = manga.manga_id), 0) DESC"
 			else -> throw IllegalArgumentException("Sort order $order is not supported")
 		}
 

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

@@ -15,6 +15,7 @@ import org.koitharu.kotatsu.core.db.entity.toMangaTags
 import org.koitharu.kotatsu.core.model.MangaHistory
 import org.koitharu.kotatsu.core.model.findById
 import org.koitharu.kotatsu.core.model.isLocal
+import org.koitharu.kotatsu.core.model.isNsfw
 import org.koitharu.kotatsu.core.parser.MangaDataRepository
 import org.koitharu.kotatsu.core.prefs.AppSettings
 import org.koitharu.kotatsu.core.ui.util.ReversibleHandle
@@ -108,10 +109,7 @@ class HistoryRepository @Inject constructor(
 				),
 			)
 			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) }
 		}
 	}
 
@@ -161,7 +159,7 @@ class HistoryRepository @Inject constructor(
 	}
 
 	fun shouldSkip(manga: Manga): Boolean {
-		return manga.isNsfw && settings.isHistoryExcludeNsfw || settings.isIncognitoModeEnabled
+		return ((manga.source.isNsfw() || manga.isNsfw) && settings.isHistoryExcludeNsfw) || settings.isIncognitoModeEnabled
 	}
 
 	fun observeShouldSkip(manga: Manga): Flow<Boolean> {

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

@@ -0,0 +1,49 @@
+package org.koitharu.kotatsu.history.domain
+
+import dagger.Reusable
+import kotlinx.coroutines.joinAll
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.supervisorScope
+import org.koitharu.kotatsu.core.parser.MangaRepository
+import org.koitharu.kotatsu.history.data.HistoryRepository
+import org.koitharu.kotatsu.parsers.model.Manga
+import javax.inject.Inject
+
+@Reusable
+class MarkAsReadUseCase @Inject constructor(
+	private val historyRepository: HistoryRepository,
+	private val mangaRepositoryFactory: MangaRepository.Factory,
+) {
+
+	suspend operator fun invoke(manga: Manga) {
+		val repo = mangaRepositoryFactory.create(manga.source)
+		val details = if (manga.chapters.isNullOrEmpty()) {
+			repo.getDetails(manga)
+		} else {
+			manga
+		}
+		val lastChapter = checkNotNull(details.chapters).last()
+		val pages = repo.getPages(lastChapter)
+		historyRepository.addOrUpdate(
+			manga = details,
+			chapterId = lastChapter.id,
+			page = pages.lastIndex,
+			scroll = 0,
+			percent = 1f,
+		)
+	}
+
+	suspend operator fun invoke(manga: Collection<Manga>) {
+		when (manga.size) {
+			0 -> Unit
+			1 -> invoke(manga.first())
+			else -> supervisorScope {
+				manga.map {
+					launch {
+						invoke(it)
+					}
+				}.joinAll()
+			}
+		}
+	}
+}

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

@@ -5,6 +5,7 @@ import android.view.Menu
 import android.view.MenuItem
 import androidx.appcompat.view.ActionMode
 import androidx.fragment.app.viewModels
+import com.google.android.material.dialog.MaterialAlertDialogBuilder
 import dagger.hilt.android.AndroidEntryPoint
 import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.core.os.NetworkManageIntent
@@ -54,6 +55,18 @@ class HistoryListFragment : MangaListFragment() {
 				true
 			}
 
+			R.id.action_mark_current -> {
+				MaterialAlertDialogBuilder(context ?: return false)
+					.setTitle(item.title)
+					.setMessage(R.string.mark_as_completed_prompt)
+					.setNegativeButton(android.R.string.cancel, null)
+					.setPositiveButton(android.R.string.ok) { _, _ ->
+						viewModel.markAsRead(selectedItems)
+						mode.finish()
+					}.show()
+				true
+			}
+
 			else -> super.onActionItemClicked(controller, mode, item)
 		}
 	}

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

@@ -8,6 +8,7 @@ import androidx.core.view.MenuProvider
 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 java.time.Instant
 import java.time.LocalDate
 import java.time.ZoneId
@@ -36,7 +37,7 @@ class HistoryListMenuProvider(
 
 	private fun showClearHistoryDialog() {
 		val selectionListener = RememberSelectionDialogListener(2)
-		MaterialAlertDialogBuilder(context, materialR.style.ThemeOverlay_Material3_MaterialAlertDialog_Centered)
+		MaterialAlertDialogBuilder(context, DIALOG_THEME_CENTERED)
 			.setTitle(R.string.clear_history)
 			.setSingleChoiceItems(
 				arrayOf(

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

@@ -25,6 +25,7 @@ import org.koitharu.kotatsu.core.util.ext.call
 import org.koitharu.kotatsu.core.util.ext.onFirst
 import org.koitharu.kotatsu.download.ui.worker.DownloadWorker
 import org.koitharu.kotatsu.history.data.HistoryRepository
+import org.koitharu.kotatsu.history.domain.MarkAsReadUseCase
 import org.koitharu.kotatsu.history.domain.model.MangaWithHistory
 import org.koitharu.kotatsu.list.domain.ListExtraProvider
 import org.koitharu.kotatsu.list.domain.ListSortOrder
@@ -39,6 +40,7 @@ import org.koitharu.kotatsu.list.ui.model.toGridModel
 import org.koitharu.kotatsu.list.ui.model.toListDetailedModel
 import org.koitharu.kotatsu.list.ui.model.toListModel
 import org.koitharu.kotatsu.local.data.LocalMangaRepository
+import org.koitharu.kotatsu.parsers.model.Manga
 import java.time.Instant
 import javax.inject.Inject
 
@@ -48,6 +50,7 @@ class HistoryListViewModel @Inject constructor(
 	settings: AppSettings,
 	private val extraProvider: ListExtraProvider,
 	private val localMangaRepository: LocalMangaRepository,
+	private val markAsReadUseCase: MarkAsReadUseCase,
 	networkState: NetworkState,
 	downloadScheduler: DownloadWorker.Scheduler,
 ) : MangaListViewModel(settings, downloadScheduler) {
@@ -121,6 +124,12 @@ class HistoryListViewModel @Inject constructor(
 		}
 	}
 
+	fun markAsRead(items: Set<Manga>) {
+		launchLoadingJob(Dispatchers.Default) {
+			markAsReadUseCase(items)
+		}
+	}
+
 	private suspend fun mapList(
 		list: List<MangaWithHistory>,
 		grouped: Boolean,
@@ -163,7 +172,7 @@ class HistoryListViewModel @Inject constructor(
 	}
 
 	private fun MangaHistory.header(order: ListSortOrder): ListHeader? = when (order) {
-		ListSortOrder.UPDATED -> ListHeader(calculateTimeAgo(updatedAt))
+		ListSortOrder.LAST_READ -> ListHeader(calculateTimeAgo(updatedAt))
 		ListSortOrder.NEWEST -> ListHeader(calculateTimeAgo(createdAt))
 		ListSortOrder.PROGRESS -> ListHeader(
 			when (percent) {
@@ -175,6 +184,7 @@ class HistoryListViewModel @Inject constructor(
 		)
 
 		ListSortOrder.ALPHABETIC,
+		ListSortOrder.ALPHABETIC_REVERSE,
 		ListSortOrder.RELEVANCE,
 		ListSortOrder.NEW_CHAPTERS,
 		ListSortOrder.RATING -> null

app/src/main/kotlin/org/koitharu/kotatsu/list/domain/ListSortOrder.kt

@@ -9,21 +9,22 @@ enum class ListSortOrder(
 	@StringRes val titleResId: Int,
 ) {
 
-	UPDATED(R.string.updated),
 	NEWEST(R.string.order_added),
 	PROGRESS(R.string.progress),
 	ALPHABETIC(R.string.by_name),
+	ALPHABETIC_REVERSE(R.string.by_name_reverse),
 	RATING(R.string.by_rating),
 	RELEVANCE(R.string.by_relevance),
 	NEW_CHAPTERS(R.string.new_chapters),
+	LAST_READ(R.string.last_read),
 	;
 
-	fun isGroupingSupported() = this == UPDATED || this == NEWEST || this == PROGRESS
+	fun isGroupingSupported() = this == LAST_READ || this == NEWEST || this == PROGRESS
 
 	companion object {
 
-		val HISTORY: Set<ListSortOrder> = EnumSet.of(UPDATED, NEWEST, PROGRESS, ALPHABETIC, NEW_CHAPTERS)
-		val FAVORITES: Set<ListSortOrder> = EnumSet.of(ALPHABETIC, NEWEST, RATING, NEW_CHAPTERS, PROGRESS)
+		val HISTORY: Set<ListSortOrder> = EnumSet.of(LAST_READ, NEWEST, PROGRESS, ALPHABETIC, ALPHABETIC_REVERSE, NEW_CHAPTERS)
+		val FAVORITES: Set<ListSortOrder> = EnumSet.of(ALPHABETIC, ALPHABETIC_REVERSE, NEWEST, RATING, NEW_CHAPTERS, PROGRESS, LAST_READ)
 		val SUGGESTIONS: Set<ListSortOrder> = EnumSet.of(RELEVANCE)
 
 		operator fun invoke(value: String, fallback: ListSortOrder) = entries.find(value) ?: fallback

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/list/ui/config/ListConfigViewModel.kt

@@ -9,6 +9,7 @@ import org.koitharu.kotatsu.core.ui.BaseViewModel
 import org.koitharu.kotatsu.core.util.ext.require
 import org.koitharu.kotatsu.core.util.ext.sortedByOrdinal
 import org.koitharu.kotatsu.favourites.domain.FavouritesRepository
+import org.koitharu.kotatsu.favourites.ui.list.FavouritesListFragment.Companion.NO_ID
 import org.koitharu.kotatsu.list.domain.ListSortOrder
 import org.koitharu.kotatsu.parsers.util.runCatchingCancellable
 import javax.inject.Inject
@@ -65,7 +66,11 @@ class ListConfigViewModel @Inject constructor(
 		val value = getSortOrders()?.getOrNull(position) ?: return
 		when (section) {
 			is ListConfigSection.Favorites -> launchJob {
-				favouritesRepository.setCategoryOrder(section.categoryId, value)
+				if (section.categoryId == NO_ID) {
+					settings.allFavoritesSortOrder = value
+				} else {
+					favouritesRepository.setCategoryOrder(section.categoryId, value)
+				}
 			}
 
 			ListConfigSection.General -> Unit
@@ -75,9 +80,13 @@ class ListConfigViewModel @Inject constructor(
 		}
 	}
 
-	private fun getCategorySortOrder(id: Long): ListSortOrder = runBlocking {
+	private fun getCategorySortOrder(id: Long): ListSortOrder = if (id == NO_ID) {
+		settings.allFavoritesSortOrder
+	} else runBlocking {
 		runCatchingCancellable {
 			favouritesRepository.getCategory(id).order
-		}.getOrDefault(ListSortOrder.NEWEST)
+		}.getOrElse {
+			settings.allFavoritesSortOrder
+		}
 	}
 }

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/importer/SingleMangaImporter.kt

@@ -47,7 +47,7 @@ class SingleMangaImporter @Inject constructor(
 		val contentResolver = storageManager.contentResolver
 		val name = contentResolver.resolveName(uri) ?: throw IOException("Cannot fetch name from uri: $uri")
 		if (!hasCbzExtension(name)) {
-			throw UnsupportedFileException("Unsupported file on $uri")
+			throw UnsupportedFileException("Unsupported file $name on $uri")
 		}
 		val dest = File(getOutputDir(), name)
 		runInterruptible {

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

@@ -71,7 +71,8 @@ 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(),

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

@@ -100,6 +100,7 @@ sealed class LocalMangaInput(
 			id = id,
 			name = name,
 			number = number,
+			volume = volume,
 			url = url,
 			scanlator = scanlator,
 			uploadDate = uploadDate,

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

@@ -21,7 +21,7 @@ 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
 

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/ImportDialogFragment.kt

@@ -9,13 +9,20 @@ import android.widget.Toast
 import androidx.activity.result.contract.ActivityResultContracts
 import androidx.fragment.app.FragmentManager
 import com.google.android.material.dialog.MaterialAlertDialogBuilder
+import dagger.hilt.android.AndroidEntryPoint
 import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.core.ui.AlertDialogFragment
 import org.koitharu.kotatsu.core.util.ext.tryLaunch
 import org.koitharu.kotatsu.databinding.DialogImportBinding
+import org.koitharu.kotatsu.local.data.LocalStorageManager
+import javax.inject.Inject
 
+@AndroidEntryPoint
 class ImportDialogFragment : AlertDialogFragment<DialogImportBinding>(), View.OnClickListener {
 
+	@Inject
+	lateinit var storageManager: LocalStorageManager
+
 	private val importFileCall = registerForActivityResult(ActivityResultContracts.OpenMultipleDocuments()) {
 		startImport(it)
 	}
@@ -55,6 +62,9 @@ class ImportDialogFragment : AlertDialogFragment<DialogImportBinding>(), View.On
 		if (uris.isEmpty()) {
 			return
 		}
+		uris.forEach {
+			storageManager.takePermissions(it)
+		}
 		val ctx = requireContext()
 		ImportWorker.start(ctx, uris)
 		Toast.makeText(ctx, R.string.import_will_start_soon, Toast.LENGTH_LONG).show()

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

@@ -26,6 +26,15 @@ import org.koitharu.kotatsu.remotelist.ui.RemoteListFragment
 
 class LocalListFragment : MangaListFragment(), FilterOwner {
 
+	init {
+		withArgs(1) {
+			putSerializable(
+				RemoteListFragment.ARG_SOURCE,
+				MangaSource.LOCAL,
+			) // required by FilterCoordinator
+		}
+	}
+
 	override val viewModel by viewModels<LocalListViewModel>()
 
 	override val filter: MangaFilter
@@ -97,14 +106,4 @@ class LocalListFragment : MangaListFragment(), FilterOwner {
 			Snackbar.LENGTH_SHORT,
 		).show()
 	}
-
-	companion object {
-
-		fun newInstance() = LocalListFragment().withArgs(1) {
-			putSerializable(
-				RemoteListFragment.ARG_SOURCE,
-				MangaSource.LOCAL,
-			) // required by FilterCoordinator
-		}
-	}
 }

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

@@ -7,6 +7,7 @@ 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
@@ -134,13 +135,13 @@ class MainNavigationDelegate(
 	private fun onNavigationItemSelected(@IdRes itemId: Int): Boolean {
 		return setPrimaryFragment(
 			when (itemId) {
-				R.id.nav_history -> HistoryListFragment()
-				R.id.nav_favorites -> FavouritesContainerFragment()
-				R.id.nav_explore -> ExploreFragment()
-				R.id.nav_feed -> FeedFragment()
-				R.id.nav_local -> LocalListFragment.newInstance()
-				R.id.nav_suggestions -> SuggestionsFragment()
-				R.id.nav_bookmarks -> BookmarksFragment()
+				R.id.nav_history -> HistoryListFragment::class.java
+				R.id.nav_favorites -> FavouritesContainerFragment::class.java
+				R.id.nav_explore -> ExploreFragment::class.java
+				R.id.nav_feed -> FeedFragment::class.java
+				R.id.nav_local -> LocalListFragment::class.java
+				R.id.nav_suggestions -> SuggestionsFragment::class.java
+				R.id.nav_bookmarks -> BookmarksFragment::class.java
 				else -> return false
 			},
 		)
@@ -157,16 +158,17 @@ class MainNavigationDelegate(
 		else -> 0
 	}
 
-	private fun setPrimaryFragment(fragment: Fragment): Boolean {
-		if (fragmentManager.isStateSaved) {
+	private fun setPrimaryFragment(fragmentClass: Class<out Fragment>): Boolean {
+		if (fragmentManager.isStateSaved || fragmentClass.isInstance(primaryFragment)) {
 			return false
 		}
+		val fragment = instantiateFragment(fragmentClass)
 		fragment.enterTransition = MaterialFadeThrough()
 		fragmentManager.beginTransaction()
 			.setReorderingAllowed(true)
-			.replace(R.id.container, fragment, TAG_PRIMARY)
+			.replace(R.id.container, fragmentClass, null, TAG_PRIMARY)
+			.runOnCommit { onFragmentChanged(fragment, fromUser = true) }
 			.commit()
-		onFragmentChanged(fragment, fromUser = true)
 		return true
 	}
 
@@ -179,9 +181,17 @@ 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
+			}
 		}
 	}
 
+	private fun instantiateFragment(fragmentClass: Class<out Fragment>): Fragment {
+		val classLoader = navBar.context.classLoader
+		return fragmentManager.fragmentFactory.instantiate(classLoader, fragmentClass.name)
+	}
+
 	private fun observeSettings(lifecycleOwner: LifecycleOwner) {
 		settings.observe()
 			.filter { x -> x == AppSettings.KEY_TRACKER_ENABLED || x == AppSettings.KEY_SUGGESTIONS }

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

@@ -201,7 +201,7 @@ class PageLoader @Inject constructor(
 
 	private suspend fun loadPageImpl(page: MangaPage, progress: MutableStateFlow<Float>): Uri = semaphore.withPermit {
 		val pageUrl = getPageUrl(page)
-		check(pageUrl.isNotBlank()) { "Cannot obtain full image url" }
+		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) {

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/ReaderActivity.kt

@@ -10,8 +10,6 @@ import android.transition.TransitionManager
 import android.transition.TransitionSet
 import android.view.Gravity
 import android.view.KeyEvent
-import android.view.Menu
-import android.view.MenuItem
 import android.view.MotionEvent
 import android.view.View
 import android.view.ViewGroup.MarginLayoutParams
@@ -40,8 +38,8 @@ import org.koitharu.kotatsu.core.parser.MangaIntent
 import org.koitharu.kotatsu.core.prefs.AppSettings
 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 +54,13 @@ 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
 
@@ -69,7 +68,7 @@ import javax.inject.Inject
 class ReaderActivity :
 	BaseFullscreenActivity<ActivityReaderBinding>(),
 	ChaptersSheet.OnChapterChangeListener,
-	GridTouchHelper.OnGridTouchListener,
+	TapGridDispatcher.OnGridTouchListener,
 	OnPageSelectListener,
 	ReaderConfigSheet.Callback,
 	ReaderControlDelegate.OnInteractionListener,
@@ -80,6 +79,9 @@ class ReaderActivity :
 	@Inject
 	lateinit var settings: AppSettings
 
+	@Inject
+	lateinit var tapGridSettings: TapGridSettings
+
 	private val idlingDetector = IdlingDetector(TimeUnit.SECONDS.toMillis(10), this)
 
 	private val viewModel: ReaderViewModel by viewModels()
@@ -97,7 +99,7 @@ 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 +108,11 @@ 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)
@@ -140,10 +141,11 @@ class ReaderActivity :
 		viewModel.content.observe(this) {
 			onLoadingStateChanged(viewModel.isLoading.value)
 		}
+		viewModel.incognitoMode.observe(this, MenuInvalidator(this))
 		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)
@@ -152,6 +154,8 @@ class ReaderActivity :
 		viewModel.isZoomControlsEnabled.observe(this) {
 			viewBinding.zoomControl.isVisible = it
 		}
+		addMenuProvider(ReaderTopMenuProvider(this, viewModel))
+		viewBinding.toolbarBottom.addMenuProvider(ReaderBottomMenuProvider(this, readerManager, viewModel))
 	}
 
 	override fun getParentActivityIntent(): Intent? {
@@ -190,50 +194,6 @@ class ReaderActivity :
 		viewBinding.slider.isRtl = mode == ReaderMode.REVERSED
 	}
 
-	override fun onCreateOptionsMenu(menu: Menu): Boolean {
-		menuInflater.inflate(R.menu.opt_reader_top, menu)
-		return super.onCreateOptionsMenu(menu)
-	}
-
-	override fun onOptionsItemSelected(item: MenuItem): Boolean {
-		when (item.itemId) {
-			R.id.action_settings -> {
-				startActivity(SettingsActivity.newReaderSettingsIntent(this))
-			}
-
-			R.id.action_chapters -> {
-				ChaptersSheet.show(supportFragmentManager)
-			}
-
-			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
@@ -242,13 +202,15 @@ 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 controlDelegate.onGridTouch(area)
+	}
+
+	override fun onGridLongTouch(area: TapGridArea) {
+		controlDelegate.onGridLongTouch(area)
 	}
 
 	override fun onProcessTouch(rawX: Int, rawY: Int): Boolean {
@@ -274,7 +236,7 @@ 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 {
@@ -304,6 +266,10 @@ 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)
@@ -344,10 +310,12 @@ 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)
 		}
 	}
 
@@ -364,6 +332,9 @@ 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()
@@ -375,6 +346,16 @@ 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
 	}
@@ -392,12 +373,6 @@ class ReaderActivity :
 		viewBinding.infoBar.isVisible = isBarEnabled && viewBinding.appbarTop.isGone
 	}
 
-	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 onUiStateChanged(pair: Pair<ReaderUiState?, ReaderUiState?>) {
 		val (previous: ReaderUiState?, uiState: ReaderUiState?) = pair
 		title = uiState?.resolveTitle(this) ?: getString(R.string.loading_)

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 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 +1,73 @@
 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 = container.resources.configuration.orientation == Configuration.ORIENTATION_LANDSCAPE
+			&& 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)
+		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
+	}
 }

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

@@ -0,0 +1,49 @@
+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 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: FragmentActivity,
+	private val viewModel: ReaderViewModel,
+) : MenuProvider {
+
+	override fun onCreateMenu(menu: Menu, menuInflater: MenuInflater) {
+		menuInflater.inflate(R.menu.opt_reader_top, menu)
+	}
+
+	override fun onPrepareMenu(menu: Menu) {
+		menu.findItem(R.id.action_incognito)?.isVisible = viewModel.incognitoMode.value
+	}
+
+	override fun onMenuItemSelected(menuItem: MenuItem): Boolean {
+		return when (menuItem.itemId) {
+			R.id.action_chapters -> {
+				ChaptersSheet.show(activity.supportFragmentManager)
+				true
+			}
+
+			R.id.action_incognito -> {
+				showIncognitoModeDialog()
+				true
+			}
+
+			else -> false
+		}
+	}
+
+	private fun showIncognitoModeDialog() {
+		MaterialAlertDialogBuilder(activity, DIALOG_THEME_CENTERED)
+			.setIcon(R.drawable.ic_incognito)
+			.setTitle(R.string.incognito_mode)
+			.setMessage(R.string.incognito_mode_hint)
+			.setPositiveButton(R.string.got_it, null)
+			.show()
+	}
+}

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

@@ -21,6 +21,7 @@ import kotlinx.coroutines.flow.filterNotNull
 import kotlinx.coroutines.flow.first
 import kotlinx.coroutines.flow.flatMapLatest
 import kotlinx.coroutines.flow.flowOf
+import kotlinx.coroutines.flow.flowOn
 import kotlinx.coroutines.flow.launchIn
 import kotlinx.coroutines.flow.map
 import kotlinx.coroutines.flow.onEach
@@ -51,6 +52,7 @@ import org.koitharu.kotatsu.history.data.PROGRESS_NONE
 import org.koitharu.kotatsu.history.domain.HistoryUpdateUseCase
 import org.koitharu.kotatsu.parsers.model.Manga
 import org.koitharu.kotatsu.parsers.model.MangaPage
+import org.koitharu.kotatsu.parsers.util.assertNotNull
 import org.koitharu.kotatsu.reader.domain.ChaptersLoader
 import org.koitharu.kotatsu.reader.domain.DetectReaderModeUseCase
 import org.koitharu.kotatsu.reader.domain.PageLoader
@@ -96,6 +98,12 @@ class ReaderViewModel @Inject constructor(
 	val onShowToast = MutableEventFlow<Int>()
 	val uiState = MutableStateFlow<ReaderUiState?>(null)
 
+	val incognitoMode = if (isIncognito) {
+		MutableStateFlow(true)
+	} else mangaFlow.map {
+		it != null && historyRepository.shouldSkip(it)
+	}.stateIn(viewModelScope + Dispatchers.Default, SharingStarted.Eagerly, false)
+
 	val content = MutableStateFlow(ReaderContent(emptyList(), null))
 	val manga: MangaDetails?
 		get() = mangaData.value
@@ -121,6 +129,14 @@ class ReaderViewModel @Inject constructor(
 	val isWebtoonZooEnabled = observeIsWebtoonZoomEnabled()
 		.stateIn(viewModelScope + Dispatchers.Default, SharingStarted.Lazily, false)
 
+	val defaultWebtoonZoomOut = observeIsWebtoonZoomEnabled().flatMapLatest {
+		if (it) {
+			observeWebtoonZoomOut()
+		} else {
+			flowOf(0f)
+		}
+	}.flowOn(Dispatchers.Default)
+
 	val isZoomControlsEnabled = getObserveIsZoomControlEnabled().flatMapLatest { zoom ->
 		if (zoom) {
 			combine(readerMode, isWebtoonZooEnabled) { mode, ze -> ze || mode != ReaderMode.WEBTOON }
@@ -255,8 +271,26 @@ class ReaderViewModel @Inject constructor(
 		}
 	}
 
+	fun switchChapterBy(delta: Int) {
+		val prevJob = loadingJob
+		loadingJob = launchLoadingJob(Dispatchers.Default) {
+			prevJob?.cancelAndJoin()
+			val currentChapterId = currentState.requireValue().chapterId
+			val allChapters = checkNotNull(manga).allChapters
+			var index = allChapters.indexOfFirst { x -> x.id == currentChapterId }
+			if (index < 0) {
+				return@launchLoadingJob
+			}
+			index += delta
+			val newChapterId = (allChapters.getOrNull(index) ?: return@launchLoadingJob).id
+			content.value = ReaderContent(emptyList(), null)
+			chaptersLoader.loadSingleChapter(newChapterId)
+			content.value = ReaderContent(chaptersLoader.snapshot(), ReaderState(newChapterId, 0, 0))
+		}
+	}
+
 	@MainThread
-	fun onCurrentPageChanged(position: Int) {
+	fun onCurrentPageChanged(lowerPos: Int, upperPos: Int) {
 		val prevJob = stateChangeJob
 		val pages = content.value.pages // capture immediately
 		stateChangeJob = launchJob(Dispatchers.Default) {
@@ -265,7 +299,8 @@ class ReaderViewModel @Inject constructor(
 			if (pages.size != content.value.pages.size) {
 				return@launchJob // TODO
 			}
-			pages.getOrNull(position)?.let { page ->
+			val centerPos = (lowerPos + upperPos) / 2
+			pages.getOrNull(centerPos)?.let { page ->
 				currentState.update { cs ->
 					cs?.copy(chapterId = page.chapterId, page = page.index)
 				}
@@ -275,14 +310,14 @@ class ReaderViewModel @Inject constructor(
 				return@launchJob
 			}
 			ensureActive()
-			if (position >= pages.lastIndex - BOUNDS_PAGE_OFFSET) {
+			if (upperPos >= pages.lastIndex - BOUNDS_PAGE_OFFSET) {
 				loadPrevNextChapter(pages.last().chapterId, isNext = true)
 			}
-			if (position <= BOUNDS_PAGE_OFFSET) {
+			if (lowerPos <= BOUNDS_PAGE_OFFSET) {
 				loadPrevNextChapter(pages.first().chapterId, isNext = false)
 			}
 			if (pageLoader.isPrefetchApplicable()) {
-				pageLoader.prefetch(pages.trySublist(position + 1, position + PREFETCH_LIMIT))
+				pageLoader.prefetch(pages.trySublist(upperPos + 1, upperPos + PREFETCH_LIMIT))
 			}
 		}
 	}
@@ -375,18 +410,20 @@ class ReaderViewModel @Inject constructor(
 
 	@WorkerThread
 	private fun notifyStateChanged() {
-		val state = getCurrentState()
-		val chapter = state?.chapterId?.let { chaptersLoader.peekChapter(it) }
+		val state = getCurrentState().assertNotNull("state") ?: return
+		val chapter = chaptersLoader.peekChapter(state.chapterId).assertNotNull("chapter") ?: return
+		val m = manga.assertNotNull("manga") ?: return
+		val chapterIndex = m.chapters[chapter.branch]?.indexOfFirst { it.id == chapter.id } ?: -1
 		val newState = ReaderUiState(
-			mangaName = manga?.toManga()?.title,
-			branch = chapter?.branch,
-			chapterName = chapter?.name,
-			chapterNumber = chapter?.number ?: 0,
-			chaptersTotal = manga?.chapters?.get(chapter?.branch)?.size ?: 0,
-			totalPages = if (chapter != null) chaptersLoader.getPagesCount(chapter.id) else 0,
-			currentPage = state?.page ?: 0,
+			mangaName = m.toManga().title,
+			branch = chapter.branch,
+			chapterName = chapter.name,
+			chapterNumber = chapterIndex + 1,
+			chaptersTotal = m.chapters[chapter.branch]?.size ?: 0,
+			totalPages = chaptersLoader.getPagesCount(chapter.id),
+			currentPage = state.page,
 			isSliderEnabled = settings.isReaderSliderEnabled,
-			percent = if (state != null) computePercent(state.chapterId, state.page) else PROGRESS_NONE,
+			percent = computePercent(state.chapterId, state.page),
 		)
 		uiState.value = newState
 	}
@@ -410,6 +447,11 @@ class ReaderViewModel @Inject constructor(
 		valueProducer = { isWebtoonZoomEnable },
 	)
 
+	private fun observeWebtoonZoomOut() = settings.observeAsFlow(
+		key = AppSettings.KEY_WEBTOON_ZOOM_OUT,
+		valueProducer = { defaultWebtoonZoomOut },
+	)
+
 	private fun getObserveIsZoomControlEnabled() = settings.observeAsFlow(
 		key = AppSettings.KEY_READER_ZOOM_BUTTONS,
 		valueProducer = { isReaderZoomButtonsEnabled },