Add distributionSha256Sum for gradle wrapper

.gitignore

@@ -4,6 +4,7 @@
 /.idea/caches
 /.idea/libraries
 /.idea/modules.xml
+/.idea/misc.xml
 /.idea/workspace.xml
 /.idea/navEditor.xml
 /.idea/assetWizardSettings.xml

.idea/deploymentTargetDropDown.xml

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="deploymentTargetDropDown">
+    <targetSelectedWithDropDown>
+      <Target>
+        <type value="QUICK_BOOT_TARGET" />
+        <deviceKey>
+          <Key>
+            <type value="VIRTUAL_DEVICE_PATH" />
+            <value value="$USER_HOME$/.android/avd/Pixel_API_S.avd" />
+          </Key>
+        </deviceKey>
+      </Target>
+    </targetSelectedWithDropDown>
+    <timeTargetWasSelectedWithDropDown value="2021-02-19T19:02:37.198775Z" />
+  </component>
+</project>

.idea/misc.xml

@@ -1,6 +1,35 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_11" default="true" project-jdk-name="1.8" project-jdk-type="JavaSDK">
+  <component name="DesignSurface">
+    <option name="filePathToZoomLevelMap">
+      <map>
+        <entry key="../../../../../../layout/custom_preview.xml" value="0.1" />
+        <entry key="../../../../../../opt/usr/android-sdk/platforms/android-30/data/res/drawable/list_divider_material.xml" value="0.28512820512820514" />
+        <entry key="../../../../../../opt/usr/android-sdk/platforms/android-30/data/res/layout/simple_dropdown_item_1line.xml" value="0.24739583333333334" />
+        <entry key="app/src/main/res/drawable/tab_indicator.xml" value="0.28512820512820514" />
+        <entry key="app/src/main/res/drawable/tabs_background.xml" value="0.28512820512820514" />
+        <entry key="app/src/main/res/layout-w600dp/fragment_details.xml" value="0.14583333333333334" />
+        <entry key="app/src/main/res/layout-w600dp/fragment_list.xml" value="0.14635416666666667" />
+        <entry key="app/src/main/res/layout/dialog_favorite_categories.xml" value="0.2601851851851852" />
+        <entry key="app/src/main/res/layout/dialog_list_mode.xml" value="0.2601851851851852" />
+        <entry key="app/src/main/res/layout/fragment_chapters.xml" value="0.24739583333333334" />
+        <entry key="app/src/main/res/layout/fragment_details.xml" value="0.26145833333333335" />
+        <entry key="app/src/main/res/layout/fragment_favourites.xml" value="0.26296296296296295" />
+        <entry key="app/src/main/res/layout/fragment_feed.xml" value="0.2601851851851852" />
+        <entry key="app/src/main/res/layout/fragment_list.xml" value="0.2601851851851852" />
+        <entry key="app/src/main/res/layout/item_branch.xml" value="0.24739583333333334" />
+        <entry key="app/src/main/res/layout/item_branch_dropdown.xml" value="0.25743589743589745" />
+        <entry key="app/src/main/res/layout/item_category_checkable.xml" value="0.2601851851851852" />
+        <entry key="app/src/main/res/layout/item_manga_grid.xml" value="0.26042632066728455" />
+        <entry key="app/src/main/res/layout/item_manga_list_details.xml" value="0.2601851851851852" />
+        <entry key="app/src/main/res/layout/item_page_thumb.xml" value="0.2601851851851852" />
+        <entry key="app/src/main/res/layout/item_recent.xml" value="0.2601851851851852" />
+        <entry key="app/src/main/res/layout/sheet_pages.xml" value="0.2601851851851852" />
+        <entry key="app/src/main/res/menu/popup_category.xml" value="0.2601851851851852" />
+      </map>
+    </option>
+  </component>
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_11" default="true" project-jdk-name="11" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/build/classes" />
   </component>
   <component name="ProjectType">

README.md

@@ -15,20 +15,20 @@ Legacy build (Android 4.1+): [available here](https://github.com/nv95/Kotatsu/re
 * Online manga catalogues
 * Search manga by name and genre
 * Reading history
-* Favourites with custom categories
-* Saving manga and reading it offline
-* Tablet-optimized modern UI
-* Reading third-party comics from CBZ
+* Favourites organized by user-defined categories
+* Downloading manga and reading it offline. Third-party CBZ archives also supported
+* Tablet-optimized material design UI
 * Standard and Webtoon-optimized reader
-* Notifications about new chapters
-* Updates feed
-* Global search
+* Notifications about new chapters with updates feed
 
 ### Screenshots
 
-| ![Screenshot_20200226-210337](https://user-images.githubusercontent.com/8948226/80315102-3478db00-87fe-11ea-9ce8-4bbd1c254b2b.png) | ![Screenshot_20200226-210310](https://user-images.githubusercontent.com/8948226/80315110-3f337000-87fe-11ea-95df-944c196b6667.png) | ![Screenshot_20200226-210232](https://user-images.githubusercontent.com/8948226/80315121-49ee0500-87fe-11ea-8d9b-537a041bbf2f.png) |
+| ![Screenshot_20200226-210337](https://github.com/nv95/Kotatsu/raw/devel/metadata/en-US/images/phoneScreenshots/1.png) | ![](https://github.com/nv95/Kotatsu/raw/devel/metadata/en-US/images/phoneScreenshots/2.png) | ![Screenshot_20200226-210232](https://github.com/nv95/Kotatsu/raw/devel/metadata/en-US/images/phoneScreenshots/3.png) |
 |---|---|---|
-| ![Screenshot_20200226-210405](https://user-images.githubusercontent.com/8948226/80315130-55d9c700-87fe-11ea-8350-2c8452906eb7.png)  | ![Screenshot_20200226-210151](https://user-images.githubusercontent.com/8948226/80315135-612cf280-87fe-11ea-984c-aa18567d5bbc.png) | ![Screenshot_20200226-210223](https://user-images.githubusercontent.com/8948226/80315146-6be78780-87fe-11ea-8439-ca1ca578172b.png) |
+| ![Screenshot_20200226-210405](https://github.com/nv95/Kotatsu/raw/devel/metadata/en-US/images/phoneScreenshots/4.png)  | ![Screenshot_20200226-210151](https://github.com/nv95/Kotatsu/raw/devel/metadata/en-US/images/phoneScreenshots/5.png) | ![Screenshot_20200226-210223](https://github.com/nv95/Kotatsu/raw/devel/metadata/en-US/images/phoneScreenshots/6.png) |
+
+| ![](https://github.com/nv95/Kotatsu/raw/devel/metadata/en-US/images/tenInchScreenshots/1.png) | ![](https://github.com/nv95/Kotatsu/raw/devel/metadata/en-US/images/tenInchScreenshots/2.png) |
+|---|---|
 
 ### License
 [![GNU GPLv3 Image](https://www.gnu.org/graphics/gplv3-127x51.png)](http://www.gnu.org/licenses/gpl-3.0.en.html)  

app/build.gradle

@@ -5,8 +5,6 @@ plugins {
 	id 'kotlin-parcelize'
 }
 
-def gitCommits = 'git rev-list --count HEAD'.execute([], rootDir).text.trim().toInteger()
-
 android {
 	compileSdkVersion 30
 	buildToolsVersion '30.0.3'
@@ -15,8 +13,8 @@ android {
 		applicationId 'org.koitharu.kotatsu'
 		minSdkVersion 21
 		targetSdkVersion 30
-		versionCode gitCommits
-		versionName '1.0-rc1'
+		versionCode 364
+		versionName '1.0.1'
 
 		kapt {
 			arguments {
@@ -62,27 +60,26 @@ tasks.withType(org.jetbrains.kotlin.gradle.tasks.KotlinCompile).all {
 }
 dependencies {
 	implementation fileTree(dir: 'libs', include: ['*.jar', '*.aar'])
-	implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
 	implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-core:1.4.2'
 	implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-android:1.4.2'
 
-	implementation 'androidx.core:core-ktx:1.5.0-beta01'
-	implementation 'androidx.activity:activity-ktx:1.2.0-rc01'
-	implementation 'androidx.fragment:fragment-ktx:1.3.0-rc02'
-	implementation 'androidx.lifecycle:lifecycle-runtime-ktx:2.3.0-rc01'
-	implementation 'androidx.lifecycle:lifecycle-viewmodel-ktx:2.3.0-rc01'
-	implementation 'androidx.lifecycle:lifecycle-livedata-ktx:2.3.0-rc01'
-	implementation 'androidx.lifecycle:lifecycle-service:2.3.0-rc01'
-	implementation 'androidx.lifecycle:lifecycle-process:2.3.0-rc01'
+	implementation 'androidx.core:core-ktx:1.5.0-rc01'
+	implementation 'androidx.activity:activity-ktx:1.2.2'
+	implementation 'androidx.fragment:fragment-ktx:1.3.2'
+	implementation 'androidx.lifecycle:lifecycle-runtime-ktx:2.3.1'
+	implementation 'androidx.lifecycle:lifecycle-viewmodel-ktx:2.3.1'
+	implementation 'androidx.lifecycle:lifecycle-livedata-ktx:2.3.1'
+	implementation 'androidx.lifecycle:lifecycle-service:2.3.1'
+	implementation 'androidx.lifecycle:lifecycle-process:2.3.1'
 	implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
 	implementation 'androidx.swiperefreshlayout:swiperefreshlayout:1.1.0'
-	implementation 'androidx.recyclerview:recyclerview:1.2.0-beta01'
+	implementation 'androidx.recyclerview:recyclerview:1.2.0-rc01'
 	implementation 'androidx.viewpager2:viewpager2:1.1.0-alpha01'
 	implementation 'androidx.preference:preference-ktx:1.1.1'
 	implementation 'androidx.work:work-runtime-ktx:2.5.0'
-	implementation 'com.google.android.material:material:1.3.0-rc01'
+	implementation 'com.google.android.material:material:1.3.0'
 	//noinspection LifecycleAnnotationProcessorWithJava8
-	kapt 'androidx.lifecycle:lifecycle-compiler:2.3.0-rc01'
+	kapt 'androidx.lifecycle:lifecycle-compiler:2.3.1'
 
 	implementation 'androidx.room:room-runtime:2.2.6'
 	implementation 'androidx.room:room-ktx:2.2.6'
@@ -103,7 +100,7 @@ dependencies {
 
 	debugImplementation 'com.squareup.leakcanary:leakcanary-android:2.6'
 
-	testImplementation 'junit:junit:4.13.1'
+	testImplementation 'junit:junit:4.13.2'
 	testImplementation 'org.json:json:20201115'
 	testImplementation 'org.koin:koin-test:2.2.2'
 }

app/src/main/AndroidManifest.xml

@@ -106,6 +106,7 @@
 
 		<receiver
 			android:name="org.koitharu.kotatsu.widget.shelf.ShelfWidgetProvider"
+			android:exported="true"
 			android:label="@string/manga_shelf">
 			<intent-filter>
 				<action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
@@ -116,6 +117,7 @@
 		</receiver>
 		<receiver
 			android:name="org.koitharu.kotatsu.widget.recent.RecentWidgetProvider"
+			android:exported="true"
 			android:label="@string/recent_manga">
 			<intent-filter>
 				<action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
@@ -125,6 +127,11 @@
 				android:resource="@xml/widget_recent" />
 		</receiver>
 
+		<meta-data android:name="android.webkit.WebView.EnableSafeBrowsing"
+			android:value="false" />
+		<meta-data android:name="android.webkit.WebView.MetricsOptOut"
+			android:value="true" />
+
 	</application>
 
 </manifest>

app/src/main/java/org/koitharu/kotatsu/base/ui/AlertDialogFragment.kt

@@ -8,6 +8,7 @@ import androidx.annotation.CallSuper
 import androidx.appcompat.app.AlertDialog
 import androidx.fragment.app.DialogFragment
 import androidx.viewbinding.ViewBinding
+import com.google.android.material.dialog.MaterialAlertDialogBuilder
 
 abstract class AlertDialogFragment<B : ViewBinding> : DialogFragment() {
 
@@ -20,7 +21,7 @@ abstract class AlertDialogFragment<B : ViewBinding> : DialogFragment() {
 		val inflater = activity?.layoutInflater ?: LayoutInflater.from(requireContext())
 		val binding = onInflateView(inflater, null)
 		viewBinding = binding
-		return AlertDialog.Builder(requireContext(), theme)
+		return MaterialAlertDialogBuilder(requireContext(), theme)
 			.setView(binding.root)
 			.also(::onBuildDialog)
 			.create()

app/src/main/java/org/koitharu/kotatsu/base/ui/BaseActivity.kt

@@ -1,5 +1,6 @@
 package org.koitharu.kotatsu.base.ui
 
+import android.os.Build
 import android.os.Bundle
 import android.view.KeyEvent
 import android.view.MenuItem
@@ -97,4 +98,16 @@ abstract class BaseActivity<B : ViewBinding> : AppCompatActivity(), OnApplyWindo
 		super.onSupportActionModeFinished(mode)
 		window?.statusBarColor = getThemeColor(android.R.attr.statusBarColor)
 	}
+
+	override fun onBackPressed() {
+		if ( // https://issuetracker.google.com/issues/139738913
+			Build.VERSION.SDK_INT == Build.VERSION_CODES.Q &&
+			isTaskRoot &&
+			supportFragmentManager.backStackEntryCount == 0
+		) {
+			finishAfterTransition()
+		} else {
+			super.onBackPressed()
+		}
+	}
 }

app/src/main/java/org/koitharu/kotatsu/base/ui/dialog/CheckBoxAlertDialog.kt

@@ -6,6 +6,7 @@ import android.view.LayoutInflater
 import androidx.annotation.DrawableRes
 import androidx.annotation.StringRes
 import androidx.appcompat.app.AlertDialog
+import com.google.android.material.dialog.MaterialAlertDialogBuilder
 import org.koitharu.kotatsu.databinding.DialogCheckboxBinding
 
 class CheckBoxAlertDialog private constructor(private val delegate: AlertDialog) :
@@ -17,7 +18,7 @@ class CheckBoxAlertDialog private constructor(private val delegate: AlertDialog)
 
 		private val binding = DialogCheckboxBinding.inflate(LayoutInflater.from(context))
 
-		private val delegate = AlertDialog.Builder(context)
+		private val delegate = MaterialAlertDialogBuilder(context)
 			.setView(binding.root)
 
 		fun setTitle(@StringRes titleResId: Int): Builder {

app/src/main/java/org/koitharu/kotatsu/base/ui/dialog/StorageSelectDialog.kt

@@ -7,6 +7,7 @@ import android.view.ViewGroup
 import android.widget.BaseAdapter
 import androidx.annotation.StringRes
 import androidx.appcompat.app.AlertDialog
+import com.google.android.material.dialog.MaterialAlertDialogBuilder
 import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.databinding.ItemStorageBinding
 import org.koitharu.kotatsu.local.domain.LocalMangaRepository
@@ -23,7 +24,7 @@ class StorageSelectDialog private constructor(private val delegate: AlertDialog)
 	class Builder(context: Context, defaultValue: File?, listener: OnStorageSelectListener) {
 
 		private val adapter = VolumesAdapter(context)
-		private val delegate = AlertDialog.Builder(context)
+		private val delegate = MaterialAlertDialogBuilder(context)
 
 		init {
 			if (adapter.isEmpty) {

app/src/main/java/org/koitharu/kotatsu/base/ui/dialog/TextInputDialog.kt

@@ -6,6 +6,7 @@ import android.text.InputFilter
 import android.view.LayoutInflater
 import androidx.annotation.StringRes
 import androidx.appcompat.app.AlertDialog
+import com.google.android.material.dialog.MaterialAlertDialogBuilder
 import org.koitharu.kotatsu.databinding.DialogInputBinding
 
 class TextInputDialog private constructor(
@@ -18,7 +19,7 @@ class TextInputDialog private constructor(
 
 		private val binding = DialogInputBinding.inflate(LayoutInflater.from(context))
 
-		private val delegate = AlertDialog.Builder(context)
+		private val delegate = MaterialAlertDialogBuilder(context)
 			.setView(binding.root)
 
 		fun setTitle(@StringRes titleResId: Int): Builder {

app/src/main/java/org/koitharu/kotatsu/base/ui/widgets/ChipsView.kt

@@ -0,0 +1,96 @@
+package org.koitharu.kotatsu.base.ui.widgets
+
+import android.content.Context
+import android.util.AttributeSet
+import android.view.View.OnClickListener
+import androidx.annotation.DrawableRes
+import androidx.core.view.children
+import com.google.android.material.R
+import com.google.android.material.chip.Chip
+import com.google.android.material.chip.ChipGroup
+import org.koitharu.kotatsu.utils.ext.getThemeColor
+
+class ChipsView @JvmOverloads constructor(
+	context: Context,
+	attrs: AttributeSet? = null,
+	defStyleAttr: Int = R.attr.chipGroupStyle
+) : ChipGroup(context, attrs, defStyleAttr) {
+
+	private var isLayoutSuppressedCompat = false
+	private var isLayoutCalledOnSuppressed = false
+	private var chipOnClickListener = OnClickListener {
+		onChipClickListener?.onChipClick(it as Chip, it.tag)
+	}
+	var onChipClickListener: OnChipClickListener? = null
+		set(value) {
+			field = value
+			val isChipClickable = value != null
+			children.forEach { it.isClickable = isChipClickable }
+		}
+
+	override fun requestLayout() {
+		if (isLayoutSuppressedCompat) {
+			isLayoutCalledOnSuppressed = true
+		} else {
+			super.requestLayout()
+		}
+	}
+
+	fun setChips(items: List<ChipModel>) {
+		suppressLayoutCompat(true)
+		try {
+			for ((i, model) in items.withIndex()) {
+				val chip = getChildAt(i) as Chip? ?: addChip()
+				bindChip(chip, model)
+			}
+			for (i in items.size until childCount) {
+				removeViewAt(i)
+			}
+		} finally {
+			suppressLayoutCompat(false)
+		}
+	}
+
+	private fun bindChip(chip: Chip, model: ChipModel) {
+		chip.text = model.title
+		if (model.icon == 0) {
+			chip.isChipIconVisible = false
+		} else {
+			chip.isCheckedIconVisible = true
+			chip.setChipIconResource(model.icon)
+		}
+		chip.tag = model.data
+	}
+
+	private fun addChip(): Chip {
+		val chip = Chip(context)
+		chip.setTextColor(context.getThemeColor(android.R.attr.textColorPrimary))
+		chip.isCloseIconVisible = false
+		chip.setEnsureMinTouchTargetSize(false)
+		chip.setOnClickListener(chipOnClickListener)
+		chip.isClickable = onChipClickListener != null
+		addView(chip)
+		return chip
+	}
+
+	private fun suppressLayoutCompat(suppress: Boolean) {
+		isLayoutSuppressedCompat = suppress
+		if (!suppress) {
+			if (isLayoutCalledOnSuppressed) {
+				requestLayout()
+				isLayoutCalledOnSuppressed = false
+			}
+		}
+	}
+
+	data class ChipModel(
+		@DrawableRes val icon: Int,
+		val title: CharSequence,
+		val data: Any? = null
+	)
+
+	fun interface OnChipClickListener {
+
+		fun onChipClick(chip: Chip, data: Any?)
+	}
+}

app/src/main/java/org/koitharu/kotatsu/core/model/MangaChapter.kt

@@ -9,5 +9,6 @@ data class MangaChapter(
 	val name: String,
 	val number: Int,
 	val url: String,
+	val branch: String? = null,
 	val source: MangaSource
 ) : Parcelable

app/src/main/java/org/koitharu/kotatsu/core/parser/site/MangaLibRepository.kt

@@ -90,6 +90,8 @@ open class MangaLibRepository(loaderContext: MangaLoaderContext) :
 					chapters = ArrayList(total)
 					for (i in 0 until total) {
 						val item = list.getJSONObject(i)
+						val chapterId = item.getLong("chapter_id")
+						val branchName = item.getStringOrNull("username")
 						val url = buildString {
 							append(manga.url)
 							append("/v")
@@ -106,9 +108,10 @@ open class MangaLibRepository(loaderContext: MangaLoaderContext) :
 						}
 						chapters.add(
 							MangaChapter(
-								id = generateUid(url),
+								id = generateUid(chapterId),
 								url = url,
 								source = source,
+								branch = branchName,
 								number = total - i,
 								name = name
 							)

app/src/main/java/org/koitharu/kotatsu/core/ui/ChipsFactory.kt

@@ -1,34 +0,0 @@
-package org.koitharu.kotatsu.core.ui
-
-import android.content.Context
-import android.view.View
-import androidx.annotation.DrawableRes
-import com.google.android.material.chip.Chip
-import org.koitharu.kotatsu.utils.ext.getThemeColor
-
-class ChipsFactory(val context: Context) {
-
-	fun create(
-		convertView: Chip? = null,
-		text: CharSequence,
-		@DrawableRes iconRes: Int = 0,
-		tag: Any? = null,
-		onClickListener: View.OnClickListener? = null
-	): Chip {
-		val chip = convertView ?: Chip(context).apply {
-			setTextColor(context.getThemeColor(android.R.attr.textColorPrimary))
-			isCloseIconVisible = false
-		}
-		chip.text = text
-		if (iconRes == 0) {
-			chip.isChipIconVisible = false
-		} else {
-			chip.isCheckedIconVisible = true
-			chip.setChipIconResource(iconRes)
-		}
-		chip.tag = tag
-		chip.setEnsureMinTouchTargetSize(false)
-		chip.setOnClickListener(onClickListener)
-		return chip
-	}
-}

app/src/main/java/org/koitharu/kotatsu/details/ui/ChaptersFragment.kt

@@ -3,6 +3,7 @@ package org.koitharu.kotatsu.details.ui
 import android.app.ActivityOptions
 import android.os.Bundle
 import android.view.*
+import android.widget.AdapterView
 import androidx.appcompat.app.AppCompatActivity
 import androidx.appcompat.view.ActionMode
 import androidx.core.graphics.Insets
@@ -17,6 +18,7 @@ import org.koitharu.kotatsu.base.ui.list.OnListItemClickListener
 import org.koitharu.kotatsu.core.model.MangaChapter
 import org.koitharu.kotatsu.core.model.MangaSource
 import org.koitharu.kotatsu.databinding.FragmentChaptersBinding
+import org.koitharu.kotatsu.details.ui.adapter.BranchesAdapter
 import org.koitharu.kotatsu.details.ui.adapter.ChaptersAdapter
 import org.koitharu.kotatsu.details.ui.adapter.ChaptersSelectionDecoration
 import org.koitharu.kotatsu.details.ui.model.ChapterListItem
@@ -25,7 +27,7 @@ import org.koitharu.kotatsu.reader.ui.ReaderActivity
 import org.koitharu.kotatsu.reader.ui.ReaderState
 
 class ChaptersFragment : BaseFragment<FragmentChaptersBinding>(),
-	OnListItemClickListener<MangaChapter>, ActionMode.Callback {
+	OnListItemClickListener<MangaChapter>, ActionMode.Callback, AdapterView.OnItemSelectedListener {
 
 	private val viewModel by sharedViewModel<DetailsViewModel>()
 
@@ -48,14 +50,31 @@ class ChaptersFragment : BaseFragment<FragmentChaptersBinding>(),
 		chaptersAdapter = ChaptersAdapter(this)
 		selectionDecoration = ChaptersSelectionDecoration(view.context)
 		with(binding.recyclerViewChapters) {
-			addItemDecoration(DividerItemDecoration(view.context, RecyclerView.VERTICAL))
+			addItemDecoration(
+				DividerItemDecoration(
+					view.context,
+					RecyclerView.VERTICAL
+				)
+			)
 			addItemDecoration(selectionDecoration!!)
 			setHasFixedSize(true)
 			adapter = chaptersAdapter
 		}
+		val branchesAdapter = BranchesAdapter()
+		binding.spinnerBranches.adapter = branchesAdapter
+		binding.spinnerBranches.onItemSelectedListener = this
 
 		viewModel.isLoading.observe(viewLifecycleOwner, this::onLoadingStateChanged)
 		viewModel.chapters.observe(viewLifecycleOwner, this::onChaptersChanged)
+		viewModel.branches.observe(viewLifecycleOwner) {
+			branchesAdapter.setItems(it)
+			binding.spinnerBranches.isVisible = it.size > 1
+		}
+		viewModel.selectedBranchIndex.observe(viewLifecycleOwner) {
+			if (it != -1 && it != binding.spinnerBranches.selectedItemPosition) {
+				binding.spinnerBranches.setSelection(it)
+			}
+		}
 		viewModel.isChaptersReversed.observe(viewLifecycleOwner) {
 			activity?.invalidateOptionsMenu()
 		}
@@ -64,6 +83,7 @@ class ChaptersFragment : BaseFragment<FragmentChaptersBinding>(),
 	override fun onDestroyView() {
 		chaptersAdapter = null
 		selectionDecoration = null
+		binding.spinnerBranches.adapter = null
 		super.onDestroyView()
 	}
 
@@ -145,6 +165,12 @@ class ChaptersFragment : BaseFragment<FragmentChaptersBinding>(),
 		}
 	}
 
+	override fun onItemSelected(parent: AdapterView<*>?, view: View?, position: Int, id: Long) {
+		viewModel.setSelectedBranch(binding.spinnerBranches.selectedItem as String?)
+	}
+
+	override fun onNothingSelected(parent: AdapterView<*>?) = Unit
+
 	override fun onCreateActionMode(mode: ActionMode, menu: Menu): Boolean {
 		val manga = viewModel.manga.value
 		mode.menuInflater.inflate(R.menu.mode_chapters, menu)
@@ -174,7 +200,7 @@ class ChaptersFragment : BaseFragment<FragmentChaptersBinding>(),
 		binding.recyclerViewChapters.updatePadding(
 			left = insets.left,
 			right = insets.right,
-			bottom = insets.bottom
+			bottom = insets.bottom + binding.spinnerBranches.height
 		)
 	}
 

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

@@ -7,7 +7,6 @@ import android.os.Bundle
 import android.view.Menu
 import android.view.MenuItem
 import android.widget.Toast
-import androidx.appcompat.app.AlertDialog
 import androidx.appcompat.view.ActionMode
 import androidx.appcompat.widget.Toolbar
 import androidx.core.content.pm.ShortcutManagerCompat
@@ -15,6 +14,7 @@ import androidx.core.graphics.Insets
 import androidx.core.net.toFile
 import androidx.core.view.updatePadding
 import androidx.lifecycle.lifecycleScope
+import com.google.android.material.dialog.MaterialAlertDialogBuilder
 import com.google.android.material.snackbar.Snackbar
 import com.google.android.material.tabs.TabLayout
 import com.google.android.material.tabs.TabLayoutMediator
@@ -144,7 +144,7 @@ class DetailsActivity : BaseActivity<ActivityDetailsBinding>(),
 		}
 		R.id.action_delete -> {
 			viewModel.manga.value?.let { m ->
-				AlertDialog.Builder(this)
+				MaterialAlertDialogBuilder(this)
 					.setTitle(R.string.delete_manga)
 					.setMessage(getString(R.string.text_delete_local_manga, m.title))
 					.setPositiveButton(R.string.delete) { _, _ ->
@@ -159,7 +159,7 @@ class DetailsActivity : BaseActivity<ActivityDetailsBinding>(),
 			viewModel.manga.value?.let {
 				val chaptersCount = it.chapters?.size ?: 0
 				if (chaptersCount > 5) {
-					AlertDialog.Builder(this)
+					MaterialAlertDialogBuilder(this)
 						.setTitle(R.string.save_manga)
 						.setMessage(
 							getString(

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

@@ -13,12 +13,14 @@ import androidx.core.view.updatePadding
 import coil.ImageLoader
 import coil.util.CoilUtils
 import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.Job
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.withContext
 import org.koin.android.ext.android.inject
 import org.koin.androidx.viewmodel.ext.android.sharedViewModel
 import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.base.ui.BaseFragment
+import org.koitharu.kotatsu.base.ui.widgets.ChipsView
 import org.koitharu.kotatsu.core.model.Manga
 import org.koitharu.kotatsu.core.model.MangaHistory
 import org.koitharu.kotatsu.databinding.FragmentDetailsBinding
@@ -34,6 +36,7 @@ class DetailsFragment : BaseFragment<FragmentDetailsBinding>(), View.OnClickList
 
 	private val viewModel by sharedViewModel<DetailsViewModel>()
 	private val coil by inject<ImageLoader>()
+	private var tagsJob: Job? = null
 
 	override fun onInflateView(
 		inflater: LayoutInflater,
@@ -67,47 +70,11 @@ class DetailsFragment : BaseFragment<FragmentDetailsBinding>(), View.OnClickList
 				ratingBar.progress = (ratingBar.max * manga.rating).roundToInt()
 				ratingBar.isVisible = true
 			}
-			chipsTags.removeAllViews()
-			manga.author?.let { a ->
-				chipsTags.addChips(listOf(a)) {
-					create(
-						text = it,
-						iconRes = R.drawable.ic_chip_user,
-						tag = it
-					)
-				}
-			}
-			chipsTags.addChips(manga.tags) {
-				create(
-					text = it.title,
-					iconRes = R.drawable.ic_chip_tag,
-					tag = it
-				)
-			}
-			manga.url.toUri().toFileOrNull()?.let { f ->
-				viewLifecycleScope.launch {
-					val size = withContext(Dispatchers.IO) {
-						f.length()
-					}
-					chipsTags.addChips(listOf(f)) {
-						create(
-							text = FileSizeUtils.formatBytes(context, size),
-							iconRes = R.drawable.ic_chip_storage,
-							tag = it
-						)
-					}
-				}
-			} ?: chipsTags.addChips(listOf(manga.source)) {
-				create(
-					text = it.title,
-					iconRes = R.drawable.ic_chip_web,
-					tag = it
-				)
-			}
 			imageViewFavourite.setOnClickListener(this@DetailsFragment)
 			buttonRead.setOnClickListener(this@DetailsFragment)
 			buttonRead.setOnLongClickListener(this@DetailsFragment)
 			buttonRead.isEnabled = !manga.chapters.isNullOrEmpty()
+			bindTags(manga)
 		}
 	}
 
@@ -191,4 +158,39 @@ class DetailsFragment : BaseFragment<FragmentDetailsBinding>(), View.OnClickList
 			bottom = insets.bottom
 		)
 	}
+
+	private fun bindTags(manga: Manga) {
+		tagsJob?.cancel()
+		tagsJob = viewLifecycleScope.launch {
+			val tags = ArrayList<ChipsView.ChipModel>(manga.tags.size + 2)
+			if (manga.author != null) {
+				tags += ChipsView.ChipModel(
+					title = manga.author,
+					icon = R.drawable.ic_chip_user
+				)
+			}
+			for (tag in manga.tags) {
+				tags += ChipsView.ChipModel(
+					title = tag.title,
+					icon = R.drawable.ic_chip_tag
+				)
+			}
+			val file = manga.url.toUri().toFileOrNull()
+			if (file != null) {
+				val size = withContext(Dispatchers.IO) {
+					file.length()
+				}
+				tags += ChipsView.ChipModel(
+					title = FileSizeUtils.formatBytes(requireContext(), size),
+					icon = R.drawable.ic_chip_storage
+				)
+			} else {
+				tags += ChipsView.ChipModel(
+					title = manga.source.title,
+					icon = R.drawable.ic_chip_web
+				)
+			}
+			binding.chipsTags.setChips(tags)
+		}
+	}
 }

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

@@ -1,5 +1,6 @@
 package org.koitharu.kotatsu.details.ui
 
+import androidx.lifecycle.asFlow
 import androidx.lifecycle.asLiveData
 import androidx.lifecycle.viewModelScope
 import kotlinx.coroutines.Dispatchers
@@ -18,6 +19,7 @@ import org.koitharu.kotatsu.history.domain.HistoryRepository
 import org.koitharu.kotatsu.local.domain.LocalMangaRepository
 import org.koitharu.kotatsu.tracker.domain.TrackingRepository
 import org.koitharu.kotatsu.utils.SingleLiveEvent
+import org.koitharu.kotatsu.utils.ext.mapToSet
 import java.io.IOException
 
 class DetailsViewModel(
@@ -31,6 +33,7 @@ class DetailsViewModel(
 ) : BaseViewModel() {
 
 	private val mangaData = MutableStateFlow<Manga?>(intent.manga)
+	private val selectedBranch = MutableStateFlow<String?>(null)
 
 	private val history = mangaData.mapNotNull { it?.id }
 		.distinctUntilChanged()
@@ -69,12 +72,24 @@ class DetailsViewModel(
 
 	val onMangaRemoved = SingleLiveEvent<Manga>()
 
+	val branches = mangaData.map {
+		it?.chapters?.mapToSet { x -> x.branch }?.sortedBy { x -> x }.orEmpty()
+	}.asLiveData(viewModelScope.coroutineContext + Dispatchers.Default)
+
+	val selectedBranchIndex = combine(
+		branches.asFlow(),
+		selectedBranch
+	) { branches, selected ->
+		branches.indexOf(selected)
+	}.asLiveData(viewModelScope.coroutineContext + Dispatchers.Default)
+
 	val chapters = combine(
 		mangaData.map { it?.chapters.orEmpty() },
 		history.map { it?.chapterId },
 		newChapters,
-		chaptersReversed
-	) { chapters, currentId, newCount, reversed ->
+		chaptersReversed,
+		selectedBranch
+	) { chapters, currentId, newCount, reversed, branch ->
 		val currentIndex = chapters.indexOfFirst { it.id == currentId }
 		val firstNewIndex = chapters.size - newCount
 		val res = chapters.mapIndexed { index, chapter ->
@@ -86,7 +101,7 @@ class DetailsViewModel(
 					else -> ChapterExtra.UNREAD
 				}
 			)
-		}
+		}.filter { it.chapter.branch == branch }
 		if (reversed) res.asReversed() else res
 	}.asLiveData(viewModelScope.coroutineContext + Dispatchers.Default)
 
@@ -96,6 +111,15 @@ class DetailsViewModel(
 				?: throw MangaNotFoundException("Cannot find manga")
 			mangaData.value = manga
 			manga = manga.source.repository.getDetails(manga)
+			// find default branch
+			val hist = historyRepository.getOne(manga)
+			selectedBranch.value = if (hist != null) {
+				manga.chapters?.find { it.id == hist.chapterId }?.branch
+			} else {
+				manga.chapters
+					?.groupBy { it.branch }
+					?.maxByOrNull { it.value.size }?.key
+			}
 			mangaData.value = manga
 		}
 	}
@@ -114,4 +138,8 @@ class DetailsViewModel(
 	fun setChaptersReversed(newValue: Boolean) {
 		settings.chaptersReverse = newValue
 	}
+
+	fun setSelectedBranch(branch: String?) {
+		selectedBranch.value = branch
+	}
 }

app/src/main/java/org/koitharu/kotatsu/details/ui/adapter/BranchesAdapter.kt

@@ -0,0 +1,45 @@
+package org.koitharu.kotatsu.details.ui.adapter
+
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.BaseAdapter
+import android.widget.TextView
+import org.koitharu.kotatsu.R
+import org.koitharu.kotatsu.utils.ext.replaceWith
+
+class BranchesAdapter : BaseAdapter() {
+
+	private val dataSet = ArrayList<String?>()
+
+	override fun getCount(): Int {
+		return dataSet.size
+	}
+
+	override fun getItem(position: Int): Any? {
+		return dataSet[position]
+	}
+
+	override fun getItemId(position: Int): Long {
+		return dataSet[position].hashCode().toLong()
+	}
+
+	override fun getView(position: Int, convertView: View?, parent: ViewGroup): View {
+		val view = convertView ?: LayoutInflater.from(parent.context)
+			.inflate(R.layout.item_branch, parent, false)
+		(view as TextView).text = dataSet[position]
+		return view
+	}
+
+	override fun getDropDownView(position: Int, convertView: View?, parent: ViewGroup): View {
+		val view = convertView ?: LayoutInflater.from(parent.context)
+			.inflate(R.layout.item_branch_dropdown, parent, false)
+		(view as TextView).text = dataSet[position]
+		return view
+	}
+
+	fun setItems(items: Collection<String?>) {
+		dataSet.replaceWith(items)
+		notifyDataSetChanged()
+	}
+}

app/src/main/java/org/koitharu/kotatsu/favourites/ui/FavouritesPagerAdapter.kt

@@ -25,6 +25,14 @@ class FavouritesPagerAdapter(
 		return FavouritesListFragment.newInstance(item.id)
 	}
 
+	override fun getItemId(position: Int): Long {
+		return differ.currentList[position].id
+	}
+
+	override fun containsItem(itemId: Long): Boolean {
+		return differ.currentList.any { it.id == itemId }
+	}
+
 	override fun onConfigureTab(tab: TabLayout.Tab, position: Int) {
 		val item = differ.currentList[position]
 		tab.text = item.title

app/src/main/java/org/koitharu/kotatsu/favourites/ui/categories/CategoriesEditDelegate.kt

@@ -2,7 +2,7 @@ package org.koitharu.kotatsu.favourites.ui.categories
 
 import android.content.Context
 import android.text.InputType
-import androidx.appcompat.app.AlertDialog
+import com.google.android.material.dialog.MaterialAlertDialogBuilder
 import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.base.ui.dialog.TextInputDialog
 import org.koitharu.kotatsu.core.model.FavouriteCategory
@@ -13,7 +13,7 @@ class CategoriesEditDelegate(
 ) {
 
 	fun deleteCategory(category: FavouriteCategory) {
-		AlertDialog.Builder(context)
+		MaterialAlertDialogBuilder(context)
 			.setMessage(context.getString(R.string.category_delete_confirm, category.title))
 			.setTitle(R.string.remove_category)
 			.setNegativeButton(android.R.string.cancel, null)

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

@@ -5,7 +5,7 @@ import android.view.Menu
 import android.view.MenuInflater
 import android.view.MenuItem
 import android.view.View
-import androidx.appcompat.app.AlertDialog
+import com.google.android.material.dialog.MaterialAlertDialogBuilder
 import com.google.android.material.snackbar.Snackbar
 import org.koin.androidx.viewmodel.ext.android.viewModel
 import org.koitharu.kotatsu.R
@@ -42,7 +42,7 @@ class HistoryListFragment : MangaListFragment() {
 	override fun onOptionsItemSelected(item: MenuItem): Boolean {
 		return when (item.itemId) {
 			R.id.action_clear_history -> {
-				AlertDialog.Builder(context ?: return false)
+				MaterialAlertDialogBuilder(context ?: return false)
 					.setTitle(R.string.clear_history)
 					.setMessage(R.string.text_clear_history_prompt)
 					.setNegativeButton(android.R.string.cancel, null)

app/src/main/java/org/koitharu/kotatsu/list/ui/MangaListFragment.kt

@@ -55,6 +55,7 @@ abstract class MangaListFragment : BaseFragment<FragmentListBinding>(),
 		spanSizeLookup.invalidateCache()
 	}
 	open val isSwipeRefreshEnabled = true
+	private var drawer: DrawerLayout? = null
 
 	protected abstract val viewModel: MangaListViewModel
 
@@ -70,7 +71,8 @@ abstract class MangaListFragment : BaseFragment<FragmentListBinding>(),
 
 	override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
 		super.onViewCreated(view, savedInstanceState)
-		binding.drawer?.setDrawerLockMode(DrawerLayout.LOCK_MODE_LOCKED_CLOSED)
+		drawer = binding.root as? DrawerLayout
+		drawer?.setDrawerLockMode(DrawerLayout.LOCK_MODE_LOCKED_CLOSED)
 		listAdapter = MangaListAdapter(get(), viewLifecycleOwner, this, ::resolveException)
 		paginationListener = PaginationScrollListener(4, this)
 		with(binding.recyclerView) {
@@ -101,6 +103,7 @@ abstract class MangaListFragment : BaseFragment<FragmentListBinding>(),
 	}
 
 	override fun onDestroyView() {
+		drawer = null
 		listAdapter = null
 		paginationListener = null
 		spanSizeLookup.invalidateCache()
@@ -118,15 +121,15 @@ abstract class MangaListFragment : BaseFragment<FragmentListBinding>(),
 			true
 		}
 		R.id.action_filter -> {
-			binding.drawer?.toggleDrawer(GravityCompat.END)
+			drawer?.toggleDrawer(GravityCompat.END)
 			true
 		}
 		else -> super.onOptionsItemSelected(item)
 	}
 
 	override fun onPrepareOptionsMenu(menu: Menu) {
-		menu.findItem(R.id.action_filter).isVisible = binding.drawer != null &&
-				binding.drawer?.getDrawerLockMode(GravityCompat.END) != DrawerLayout.LOCK_MODE_LOCKED_CLOSED
+		menu.findItem(R.id.action_filter).isVisible = drawer != null &&
+				drawer?.getDrawerLockMode(GravityCompat.END) != DrawerLayout.LOCK_MODE_LOCKED_CLOSED
 		super.onPrepareOptionsMenu(menu)
 	}
 
@@ -199,7 +202,7 @@ abstract class MangaListFragment : BaseFragment<FragmentListBinding>(),
 			state = config.currentFilter,
 			listener = this
 		)
-		binding.drawer?.setDrawerLockMode(
+		drawer?.setDrawerLockMode(
 			if (config.sortOrders.isEmpty() && config.tags.isEmpty()) {
 				DrawerLayout.LOCK_MODE_LOCKED_CLOSED
 			} else {
@@ -214,7 +217,7 @@ abstract class MangaListFragment : BaseFragment<FragmentListBinding>(),
 
 	@CallSuper
 	override fun onFilterChanged(filter: MangaFilter) {
-		binding.drawer?.closeDrawers()
+		drawer?.closeDrawers()
 	}
 
 	override fun onWindowInsetsChanged(insets: Insets) {

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

@@ -72,6 +72,7 @@ class MangaIndex(source: String?) {
 			jo.put("number", chapter.number)
 			jo.put("url", chapter.url)
 			jo.put("name", chapter.name)
+			jo.put("branch", chapter.branch)
 			jo.put("entries", "%03d\\d{3}".format(chapter.number))
 			chapters.put(chapter.id.toString(), jo)
 		}
@@ -97,6 +98,7 @@ class MangaIndex(source: String?) {
 					name = v.getString("name"),
 					url = v.getString("url"),
 					number = v.getInt("number"),
+					branch = v.getStringOrNull("branch"),
 					source = source
 				)
 			)

app/src/main/java/org/koitharu/kotatsu/local/domain/LocalMangaRepository.kt

@@ -7,6 +7,8 @@ import android.webkit.MimeTypeMap
 import androidx.collection.ArraySet
 import androidx.core.net.toFile
 import androidx.core.net.toUri
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.withContext
 import org.koitharu.kotatsu.core.model.*
 import org.koitharu.kotatsu.core.parser.MangaRepository
 import org.koitharu.kotatsu.local.data.CbzFilter
@@ -127,14 +129,16 @@ class LocalMangaRepository(private val context: Context) : MangaRepository {
 		)
 	}
 
-	fun getRemoteManga(localManga: Manga): Manga? {
+	suspend fun getRemoteManga(localManga: Manga): Manga? {
 		val file = runCatching {
 			Uri.parse(localManga.url).toFile()
 		}.getOrNull() ?: return null
-		val zip = ZipFile(file)
-		val entry = zip.getEntry(MangaZip.INDEX_ENTRY)
-		val index = entry?.let(zip::readText)?.let(::MangaIndex) ?: return null
-		return index.getMangaInfo()
+		return withContext(Dispatchers.IO) {
+			val zip = ZipFile(file)
+			val entry = zip.getEntry(MangaZip.INDEX_ENTRY)
+			val index = entry?.let(zip::readText)?.let(::MangaIndex) ?: return@withContext null
+			index.getMangaInfo()
+		}
 	}
 
 	private fun zipUri(file: File, entryName: String) =

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

@@ -9,7 +9,7 @@ import android.view.MenuItem
 import android.view.View
 import androidx.activity.result.ActivityResultCallback
 import androidx.activity.result.contract.ActivityResultContracts
-import androidx.appcompat.app.AlertDialog
+import com.google.android.material.dialog.MaterialAlertDialogBuilder
 import com.google.android.material.snackbar.Snackbar
 import org.koin.androidx.viewmodel.ext.android.viewModel
 import org.koitharu.kotatsu.BuildConfig
@@ -77,7 +77,7 @@ class LocalListFragment : MangaListFragment(), ActivityResultCallback<Uri> {
 	override fun onPopupMenuItemSelected(item: MenuItem, data: Manga): Boolean {
 		return when (item.itemId) {
 			R.id.action_delete -> {
-				AlertDialog.Builder(context ?: return false)
+				MaterialAlertDialogBuilder(context ?: return false)
 					.setTitle(R.string.delete_manga)
 					.setMessage(getString(R.string.text_delete_local_manga, data.title))
 					.setPositiveButton(R.string.delete) { _, _ ->

app/src/main/java/org/koitharu/kotatsu/local/ui/LocalListViewModel.kt

@@ -99,6 +99,7 @@ class LocalListViewModel(
 				runCatching {
 					historyRepository.deleteOrSwap(manga, original)
 				}
+				mangaList.value = mangaList.value?.filterNot { it.id == manga.id }
 			}
 			shortcutsRepository.updateShortcuts()
 			onMangaRemoved.call(manga)

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

@@ -88,12 +88,12 @@ class PageLoader(
 	}
 
 	suspend fun convertInPlace(file: File) {
-		convertLock.withLock(file) {
+		convertLock.withLock(Lock) {
 			withContext(Dispatchers.Default) {
 				val image = BitmapFactory.decodeFile(file.absolutePath)
 				try {
 					file.outputStream().use { out ->
-						image.compress(Bitmap.CompressFormat.WEBP, 100, out)
+						image.compress(Bitmap.CompressFormat.PNG, 100, out)
 					}
 				} finally {
 					image.recycle()
@@ -101,4 +101,6 @@ class PageLoader(
 			}
 		}
 	}
+
+	private companion object Lock
 }

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

@@ -10,12 +10,12 @@ import android.view.*
 import android.widget.Toast
 import androidx.activity.result.ActivityResultCallback
 import androidx.activity.result.contract.ActivityResultContracts
-import androidx.appcompat.app.AlertDialog
 import androidx.core.content.ContextCompat
 import androidx.core.graphics.Insets
 import androidx.core.view.*
 import androidx.fragment.app.commit
 import androidx.lifecycle.lifecycleScope
+import com.google.android.material.dialog.MaterialAlertDialogBuilder
 import com.google.android.material.snackbar.Snackbar
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.flow.launchIn
@@ -86,7 +86,7 @@ class ReaderActivity : BaseFullscreenActivity<ActivityReaderBinding>(),
 		viewModel.onError.observe(this, this::onError)
 		viewModel.readerMode.observe(this, this::onInitReader)
 		viewModel.onPageSaved.observe(this, this::onPageSaved)
-		viewModel.uiState.observe(this, this::onUiStateChanged)
+		viewModel.uiState.observeWithPrevious(this, this::onUiStateChanged)
 		viewModel.isLoading.observe(this, this::onLoadingStateChanged)
 		viewModel.content.observe(this) {
 			onLoadingStateChanged(viewModel.isLoading.value == true)
@@ -124,11 +124,6 @@ class ReaderActivity : BaseFullscreenActivity<ActivityReaderBinding>(),
 		}
 	}
 
-	override fun onPause() {
-		viewModel.saveCurrentState(reader?.getCurrentState())
-		super.onPause()
-	}
-
 	override fun onCreateOptionsMenu(menu: Menu?): Boolean {
 		menuInflater.inflate(R.menu.opt_reader_top, menu)
 		return super.onCreateOptionsMenu(menu)
@@ -204,11 +199,15 @@ class ReaderActivity : BaseFullscreenActivity<ActivityReaderBinding>(),
 	private fun onLoadingStateChanged(isLoading: Boolean) {
 		val hasPages = !viewModel.content.value?.pages.isNullOrEmpty()
 		binding.layoutLoading.isVisible = isLoading && !hasPages
-		binding.progressBarBottom.isVisible = isLoading && hasPages
+		if (isLoading && hasPages) {
+			binding.toastView.show(R.string.loading_, true)
+		} else {
+			binding.toastView.hide()
+		}
 	}
 
 	private fun onError(e: Throwable) {
-		val dialog = AlertDialog.Builder(this)
+		val dialog = MaterialAlertDialogBuilder(this)
 			.setTitle(R.string.error_occurred)
 			.setMessage(e.getDisplayMessage(resources))
 			.setPositiveButton(R.string.close, null)
@@ -336,19 +335,25 @@ class ReaderActivity : BaseFullscreenActivity<ActivityReaderBinding>(),
 		setUiIsVisible(!binding.appbarTop.isVisible)
 	}
 
-	private fun onUiStateChanged(uiState: ReaderUiState) {
+	private fun onUiStateChanged(uiState: ReaderUiState, previous: ReaderUiState?) {
 		title = uiState.chapterName ?: uiState.mangaName ?: getString(R.string.loading_)
 		supportActionBar?.subtitle = if (uiState.chapterNumber in 1..uiState.chaptersTotal) {
 			getString(R.string.chapter_d_of_d, uiState.chapterNumber, uiState.chaptersTotal)
 		} else {
 			null
 		}
+		if (previous?.chapterName != null && uiState.chapterName != previous.chapterName) {
+			if (!uiState.chapterName.isNullOrEmpty()) {
+				binding.toastView.showTemporary(uiState.chapterName, TOAST_DURATION)
+			}
+		}
 	}
 
 	companion object {
 
 		const val ACTION_MANGA_READ = "${BuildConfig.APPLICATION_ID}.action.READ_MANGA"
 		private const val EXTRA_STATE = "state"
+		private const val TOAST_DURATION = 1500L
 
 		fun newIntent(context: Context, manga: Manga, state: ReaderState?): Intent {
 			return Intent(context, ReaderActivity::class.java)

app/src/main/java/org/koitharu/kotatsu/reader/ui/ReaderToastView.kt

@@ -0,0 +1,56 @@
+package org.koitharu.kotatsu.reader.ui
+
+import android.content.Context
+import android.graphics.Color
+import android.util.AttributeSet
+import androidx.annotation.StringRes
+import androidx.swiperefreshlayout.widget.CircularProgressDrawable
+import com.google.android.material.textview.MaterialTextView
+import org.koitharu.kotatsu.utils.anim.Duration
+import org.koitharu.kotatsu.utils.anim.Motion
+import org.koitharu.kotatsu.utils.ext.hideAnimated
+import org.koitharu.kotatsu.utils.ext.showAnimated
+
+class ReaderToastView @JvmOverloads constructor(
+	context: Context, attrs: AttributeSet? = null, defStyleAttr: Int = 0
+) : MaterialTextView(context, attrs, defStyleAttr) {
+
+	private var hideRunnable = Runnable {
+		hide()
+	}
+
+	fun show(message: CharSequence, isLoading: Boolean) {
+		removeCallbacks(hideRunnable)
+		text = message
+		this.showAnimated(Motion.Toast, Duration.SHORT)
+	}
+
+	fun show(@StringRes messageId: Int, isLoading: Boolean) {
+		show(context.getString(messageId), isLoading)
+	}
+
+	fun showTemporary(message: CharSequence, duration: Long) {
+		show(message, false)
+		postDelayed(hideRunnable, duration)
+	}
+
+	fun hide() {
+		removeCallbacks(hideRunnable)
+		this.hideAnimated(Motion.Toast, Duration.SHORT)
+	}
+
+	override fun onDetachedFromWindow() {
+		removeCallbacks(hideRunnable)
+		super.onDetachedFromWindow()
+	}
+
+	// FIXME use it as compound drawable
+	private fun createProgressDrawable(): CircularProgressDrawable {
+		val drawable = CircularProgressDrawable(context)
+		drawable.setStyle(CircularProgressDrawable.DEFAULT)
+		drawable.arrowEnabled = false
+		drawable.setColorSchemeColors(Color.WHITE)
+		drawable.centerRadius = lineHeight / 3f
+		return drawable
+	}
+}

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

@@ -8,8 +8,6 @@ import androidx.lifecycle.MutableLiveData
 import androidx.lifecycle.viewModelScope
 import kotlinx.coroutines.*
 import kotlinx.coroutines.flow.*
-import okhttp3.OkHttpClient
-import okhttp3.Request
 import org.koin.core.component.KoinComponent
 import org.koin.core.component.get
 import org.koitharu.kotatsu.base.domain.MangaDataRepository
@@ -20,11 +18,11 @@ import org.koitharu.kotatsu.core.exceptions.MangaNotFoundException
 import org.koitharu.kotatsu.core.model.Manga
 import org.koitharu.kotatsu.core.model.MangaChapter
 import org.koitharu.kotatsu.core.model.MangaPage
-import org.koitharu.kotatsu.core.network.CommonHeaders
 import org.koitharu.kotatsu.core.os.ShortcutsRepository
 import org.koitharu.kotatsu.core.prefs.AppSettings
 import org.koitharu.kotatsu.core.prefs.ReaderMode
 import org.koitharu.kotatsu.history.domain.HistoryRepository
+import org.koitharu.kotatsu.local.data.PagesCache
 import org.koitharu.kotatsu.reader.ui.pager.ReaderPage
 import org.koitharu.kotatsu.reader.ui.pager.ReaderUiState
 import org.koitharu.kotatsu.utils.MediaStoreCompat
@@ -42,7 +40,7 @@ class ReaderViewModel(
 
 	private var loadingJob: Job? = null
 	private val currentState = MutableStateFlow<ReaderState?>(null)
-	private val mangaData = MutableStateFlow<Manga?>(intent.manga)
+	private val mangaData = MutableStateFlow(intent.manga)
 	private val chapters = LongSparseArray<MangaChapter>()
 
 	val readerMode = MutableLiveData<ReaderMode>()
@@ -60,7 +58,7 @@ class ReaderViewModel(
 		)
 	}.asLiveDataDistinct(viewModelScope.coroutineContext + Dispatchers.Default)
 
-	val content = MutableLiveData<ReaderContent>(ReaderContent(emptyList(), null))
+	val content = MutableLiveData(ReaderContent(emptyList(), null))
 	val manga: Manga?
 		get() = mangaData.value
 
@@ -82,7 +80,6 @@ class ReaderViewModel(
 			manga.chapters?.forEach {
 				chapters.put(it.id, it)
 			}
-			mangaData.value = manga
 			// determine mode
 			val mode =
 				dataRepository.getReaderMode(manga.id) ?: manga.chapters?.randomOrNull()?.let {
@@ -98,6 +95,9 @@ class ReaderViewModel(
 			currentState.value = state ?: historyRepository.getOne(manga)?.let {
 				ReaderState.from(it)
 			} ?: ReaderState.initial(manga)
+
+			val branch = chapters[currentState.value?.chapterId ?: 0L].branch
+			mangaData.value = manga.copy(chapters = manga.chapters?.filter { it.branch == branch })
 			readerMode.postValue(mode)
 
 			val pages = loadChapter(requireNotNull(currentState.value).chapterId)
@@ -156,20 +156,11 @@ class ReaderViewModel(
 				}?.toMangaPage() ?: error("Page not found")
 				val repo = page.source.repository
 				val pageUrl = repo.getPageUrl(page)
-				val request = Request.Builder()
-					.url(pageUrl)
-					.header(CommonHeaders.REFERER, page.referer)
-					.get()
-					.build()
-				val uri = get<OkHttpClient>().newCall(request).await().use { response ->
-					val fileName =
-						URLUtil.guessFileName(
-							pageUrl,
-							response.contentDisposition,
-							response.mimeType
-						)
+				val file = get<PagesCache>()[pageUrl] ?: error("Page not found in cache")
+				val uri = file.inputStream().use { input ->
+					val fileName = URLUtil.guessFileName(pageUrl, null, null)
 					MediaStoreCompat(resolver).insertImage(fileName) {
-						checkNotNull(response.body).byteStream().copyTo(it)
+						input.copyTo(it)
 					}
 				}
 				onPageSaved.postCall(uri)

app/src/main/java/org/koitharu/kotatsu/reader/ui/pager/BaseReader.kt

@@ -18,29 +18,34 @@ abstract class BaseReader<B : ViewBinding> : BaseFragment<B>() {
 	protected val loader by lazy(LazyThreadSafetyMode.NONE) {
 		PageLoader(lifecycleScope, get(), get())
 	}
-	private var lastReaderState: ReaderState? = null
+	private var stateToSave: ReaderState? = null
 
 	override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
 		super.onViewCreated(view, savedInstanceState)
-		lastReaderState = savedInstanceState?.getParcelable(KEY_STATE) ?: lastReaderState
+		var restoredState = savedInstanceState?.getParcelable<ReaderState?>(KEY_STATE)
 
 		viewModel.content.observe(viewLifecycleOwner) {
-			onPagesChanged(it.pages, lastReaderState ?: it.state)
-			lastReaderState = null
+			onPagesChanged(it.pages, restoredState ?: it.state)
+			restoredState = null
 		}
 	}
 
+	override fun onPause() {
+		super.onPause()
+		viewModel.saveCurrentState(getCurrentState())
+	}
+
 	override fun onDestroyView() {
-		lastReaderState = getCurrentState()
+		stateToSave = getCurrentState()
 		super.onDestroyView()
 	}
 
 	override fun onSaveInstanceState(outState: Bundle) {
 		super.onSaveInstanceState(outState)
 		getCurrentState()?.let {
-			lastReaderState = it
+			stateToSave = it
 		}
-		outState.putParcelable(KEY_STATE, lastReaderState)
+		outState.putParcelable(KEY_STATE, stateToSave)
 	}
 
 	override fun onWindowInsetsChanged(insets: Insets) = Unit

app/src/main/java/org/koitharu/kotatsu/reader/ui/pager/BaseReaderAdapter.kt

@@ -21,6 +21,7 @@ abstract class BaseReaderAdapter<H : BasePageHolder<*>>(
 
 	init {
 		setHasStableIds(true)
+		stateRestorationPolicy = StateRestorationPolicy.PREVENT
 	}
 
 	override fun onBindViewHolder(holder: H, position: Int) {

app/src/main/java/org/koitharu/kotatsu/reader/ui/pager/reversed/ReversedReaderFragment.kt

@@ -12,7 +12,9 @@ import org.koitharu.kotatsu.reader.ui.ReaderState
 import org.koitharu.kotatsu.reader.ui.pager.BaseReader
 import org.koitharu.kotatsu.reader.ui.pager.BaseReaderAdapter
 import org.koitharu.kotatsu.reader.ui.pager.ReaderPage
+import org.koitharu.kotatsu.reader.ui.pager.standard.PagerReaderFragment
 import org.koitharu.kotatsu.utils.ext.*
+import kotlin.math.absoluteValue
 
 class ReversedReaderFragment : BaseReader<FragmentReaderStandardBinding>() {
 
@@ -58,7 +60,10 @@ class ReversedReaderFragment : BaseReader<FragmentReaderStandardBinding>() {
 	}
 
 	override fun switchPageTo(position: Int, smooth: Boolean) {
-		binding.pager.setCurrentItem(reversed(position), smooth)
+		binding.pager.setCurrentItem(
+			reversed(position),
+			smooth && (binding.pager.currentItem - position).absoluteValue < PagerReaderFragment.SMOOTH_SCROLL_LIMIT
+		)
 	}
 
 	override fun onPagesChanged(pages: List<ReaderPage>, pendingState: ReaderState?) {

app/src/main/java/org/koitharu/kotatsu/reader/ui/pager/standard/PagerReaderFragment.kt

@@ -13,6 +13,7 @@ import org.koitharu.kotatsu.reader.ui.pager.BaseReader
 import org.koitharu.kotatsu.reader.ui.pager.BaseReaderAdapter
 import org.koitharu.kotatsu.reader.ui.pager.ReaderPage
 import org.koitharu.kotatsu.utils.ext.*
+import kotlin.math.absoluteValue
 
 class PagerReaderFragment : BaseReader<FragmentReaderStandardBinding>() {
 
@@ -78,7 +79,10 @@ class PagerReaderFragment : BaseReader<FragmentReaderStandardBinding>() {
 	}
 
 	override fun switchPageTo(position: Int, smooth: Boolean) {
-		binding.pager.setCurrentItem(position, smooth)
+		binding.pager.setCurrentItem(
+			position,
+			smooth && (binding.pager.currentItem - position).absoluteValue < SMOOTH_SCROLL_LIMIT
+		)
 	}
 
 	override fun getCurrentState(): ReaderState? = bindingOrNull()?.run {
@@ -94,4 +98,9 @@ class PagerReaderFragment : BaseReader<FragmentReaderStandardBinding>() {
 	private fun notifyPageChanged(page: Int) {
 		viewModel.onCurrentPageChanged(page)
 	}
+
+	companion object {
+
+		const val SMOOTH_SCROLL_LIMIT = 3
+	}
 }

app/src/main/java/org/koitharu/kotatsu/reader/ui/pager/wetoon/WebtoonReaderFragment.kt

@@ -88,10 +88,6 @@ class WebtoonReaderFragment : BaseReader<FragmentReaderWebtoonBinding>() {
 	}
 
 	override fun switchPageTo(position: Int, smooth: Boolean) {
-		if (smooth) {
-			binding.recyclerView.smoothScrollToPosition(position)
-		} else {
-			binding.recyclerView.firstItem = position
-		}
+		binding.recyclerView.firstItem = position
 	}
 }

app/src/main/java/org/koitharu/kotatsu/settings/AppUpdateChecker.kt

@@ -7,8 +7,8 @@ import android.content.pm.PackageManager
 import android.net.Uri
 import androidx.activity.ComponentActivity
 import androidx.annotation.MainThread
-import androidx.appcompat.app.AlertDialog
 import androidx.lifecycle.lifecycleScope
+import com.google.android.material.dialog.MaterialAlertDialogBuilder
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.Job
 import kotlinx.coroutines.launch
@@ -77,7 +77,7 @@ class AppUpdateChecker(private val activity: ComponentActivity) {
 
 	@MainThread
 	private fun showUpdateDialog(version: AppVersion) {
-		AlertDialog.Builder(activity)
+		MaterialAlertDialogBuilder(activity)
 			.setTitle(R.string.app_update_available)
 			.setMessage(buildString {
 				append(activity.getString(R.string.new_version_s, version.name))

app/src/main/java/org/koitharu/kotatsu/settings/backup/BackupDialogFragment.kt

@@ -6,6 +6,7 @@ import android.view.View
 import android.view.ViewGroup
 import androidx.appcompat.app.AlertDialog
 import androidx.core.view.isVisible
+import com.google.android.material.dialog.MaterialAlertDialogBuilder
 import org.koin.androidx.viewmodel.ext.android.viewModel
 import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.base.ui.AlertDialogFragment
@@ -40,7 +41,7 @@ class BackupDialogFragment : AlertDialogFragment<DialogProgressBinding>() {
 	}
 
 	private fun onError(e: Throwable) {
-		AlertDialog.Builder(context ?: return)
+		MaterialAlertDialogBuilder(context ?: return)
 			.setNegativeButton(R.string.close, null)
 			.setTitle(R.string.error)
 			.setMessage(e.getDisplayMessage(resources))

app/src/main/java/org/koitharu/kotatsu/settings/backup/RestoreDialogFragment.kt

@@ -7,6 +7,7 @@ import android.view.View
 import android.view.ViewGroup
 import androidx.appcompat.app.AlertDialog
 import androidx.core.view.isVisible
+import com.google.android.material.dialog.MaterialAlertDialogBuilder
 import org.koin.androidx.viewmodel.ext.android.viewModel
 import org.koin.core.parameter.parametersOf
 import org.koitharu.kotatsu.R
@@ -44,7 +45,7 @@ class RestoreDialogFragment : AlertDialogFragment<DialogProgressBinding>() {
 	}
 
 	private fun onError(e: Throwable) {
-		AlertDialog.Builder(context ?: return)
+		MaterialAlertDialogBuilder(context ?: return)
 			.setNegativeButton(R.string.close, null)
 			.setTitle(R.string.error)
 			.setMessage(e.getDisplayMessage(resources))
@@ -64,7 +65,7 @@ class RestoreDialogFragment : AlertDialogFragment<DialogProgressBinding>() {
 	}
 
 	private fun onRestoreDone(result: CompositeResult) {
-		val builder = AlertDialog.Builder(context ?: return)
+		val builder = MaterialAlertDialogBuilder(context ?: return)
 		when {
 			result.isAllSuccess -> builder.setTitle(R.string.data_restored)
 				.setMessage(R.string.data_restored_success)

app/src/main/java/org/koitharu/kotatsu/tracker/domain/TrackingRepository.kt

@@ -28,13 +28,8 @@ class TrackingRepository(
 		}
 		val tracks = db.tracksDao.findAll().groupBy { it.mangaId }
 		return mangaList
-			.mapNotNull {
-				if (it.source == MangaSource.LOCAL) {
-					localMangaRepository.getRemoteManga(it)
-				} else {
-					it
-				}
-			}.distinctBy { it.id }
+			.filterNot { it.source == MangaSource.LOCAL }
+			.distinctBy { it.id }
 			.map { manga ->
 				val track = tracks[manga.id]?.singleOrNull()
 				MangaTracking(

app/src/main/java/org/koitharu/kotatsu/tracker/ui/FeedFragment.kt

@@ -2,9 +2,9 @@ package org.koitharu.kotatsu.tracker.ui
 
 import android.os.Bundle
 import android.view.*
-import androidx.appcompat.app.AlertDialog
 import androidx.core.graphics.Insets
 import androidx.core.view.updatePadding
+import com.google.android.material.dialog.MaterialAlertDialogBuilder
 import com.google.android.material.snackbar.Snackbar
 import org.koin.android.ext.android.get
 import org.koin.androidx.viewmodel.ext.android.viewModel
@@ -80,7 +80,7 @@ class FeedFragment : BaseFragment<FragmentFeedBinding>(), PaginationScrollListen
 				true
 			}
 			R.id.action_clear_feed -> {
-				AlertDialog.Builder(context ?: return false)
+				MaterialAlertDialogBuilder(context ?: return false)
 					.setTitle(R.string.clear_updates_feed)
 					.setMessage(R.string.text_clear_updates_feed_prompt)
 					.setNegativeButton(android.R.string.cancel, null)

app/src/main/java/org/koitharu/kotatsu/tracker/ui/model/ListModelConversionExt.kt

@@ -6,21 +6,37 @@ import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.core.model.TrackingLogItem
 import org.koitharu.kotatsu.utils.ext.formatRelative
 
-fun TrackingLogItem.toFeedItem(resources: Resources) = FeedItem(
-	id = id,
-	imageUrl = manga.coverUrl,
-	title = manga.title,
-	subtitle = buildString {
-		append(createdAt.formatRelative(DateUtils.DAY_IN_MILLIS))
-		append(" ")
-		append(
-			resources.getQuantityString(
-				R.plurals.new_chapters,
-				chapters.size,
-				chapters.size
+fun TrackingLogItem.toFeedItem(resources: Resources): FeedItem {
+	val chaptersString = if (chapters.size > MAX_CHAPTERS) {
+		chapters.joinToString(
+			separator = "\n",
+			limit = MAX_CHAPTERS - 1,
+			truncated = resources.getString(
+				R.string._and_x_more,
+				chapters.size - MAX_CHAPTERS + 1
 			)
 		)
-	},
-	chapters = chapters.joinToString("\n"),
-	manga = manga
-)
+	} else {
+		chapters.joinToString("\n")
+	}
+	return FeedItem(
+		id = id,
+		imageUrl = manga.coverUrl,
+		title = manga.title,
+		subtitle = buildString {
+			append(createdAt.formatRelative(DateUtils.DAY_IN_MILLIS))
+			append(" ")
+			append(
+				resources.getQuantityString(
+					R.plurals.new_chapters,
+					chapters.size,
+					chapters.size
+				)
+			)
+		},
+		chapters = chaptersString,
+		manga = manga
+	)
+}
+
+private const val MAX_CHAPTERS = 6

app/src/main/java/org/koitharu/kotatsu/utils/anim/Motion.kt

@@ -2,7 +2,8 @@ package org.koitharu.kotatsu.utils.anim
 
 import android.view.View
 import android.view.ViewPropertyAnimator
-import android.view.animation.AccelerateDecelerateInterpolator
+import android.view.animation.AccelerateInterpolator
+import android.view.animation.DecelerateInterpolator
 import org.koitharu.kotatsu.utils.ext.measureHeight
 
 sealed class Motion {
@@ -69,27 +70,25 @@ sealed class Motion {
 		}
 	}
 
-	object CheckEffect : Motion() {
+	object Toast : Motion() {
 		override fun reset(v: View) {
-			v.scaleX = 1f
-			v.scaleY = 1f
+			v.alpha = 1f
 		}
 
 		override fun hideView(v: View) {
-			v.scaleX = 0f
-			v.scaleY = 0f
+			v.alpha = 0f
 		}
 
 		override fun hide(v: View, anim: ViewPropertyAnimator) {
-			anim.scaleX(0f)
-			anim.scaleY(0f)
-			anim.interpolator = AccelerateDecelerateInterpolator()
+			anim.alpha(0f)
+			anim.translationY(v.measureHeight().toFloat())
+			anim.interpolator = AccelerateInterpolator()
 		}
 
 		override fun show(v: View, anim: ViewPropertyAnimator) {
-			anim.scaleY(1f)
-			anim.scaleX(1f)
-			anim.interpolator = AccelerateDecelerateInterpolator()
+			anim.alpha(1f)
+			anim.translationY(0f)
+			anim.interpolator = DecelerateInterpolator()
 		}
 	}
 }

app/src/main/java/org/koitharu/kotatsu/utils/ext/TextViewExt.kt

@@ -0,0 +1,20 @@
+package org.koitharu.kotatsu.utils.ext
+
+import android.graphics.drawable.Drawable
+import android.view.View
+import android.widget.TextView
+import androidx.core.view.isGone
+
+var TextView.textAndVisible: CharSequence?
+	inline get() = text?.takeIf { visibility == View.VISIBLE }
+	set(value) {
+		text = value
+		isGone = value.isNullOrEmpty()
+	}
+
+var TextView.drawableStart: Drawable?
+	inline get() = compoundDrawablesRelative[0]
+	set(value) {
+		val dr = compoundDrawablesRelative
+		setCompoundDrawablesRelativeWithIntrinsicBounds(value, dr[1], dr[2], dr[3])
+	}

app/src/main/java/org/koitharu/kotatsu/utils/ext/ViewExt.kt

@@ -22,7 +22,6 @@ import androidx.recyclerview.widget.RecyclerView
 import androidx.viewpager2.widget.ViewPager2
 import com.google.android.material.chip.Chip
 import com.google.android.material.chip.ChipGroup
-import org.koitharu.kotatsu.core.ui.ChipsFactory
 
 fun View.hideKeyboard() {
 	val imm = context.getSystemService(Activity.INPUT_METHOD_SERVICE) as InputMethodManager
@@ -40,21 +39,6 @@ inline fun <reified T : View> ViewGroup.inflate(@LayoutRes resId: Int) =
 val RecyclerView.hasItems: Boolean
 	get() = (adapter?.itemCount ?: 0) > 0
 
-var TextView.textAndVisible: CharSequence?
-	get() = text?.takeIf { visibility == View.VISIBLE }
-	set(value) {
-		text = value
-		isGone = value.isNullOrEmpty()
-	}
-
-inline fun <T> ChipGroup.addChips(data: Iterable<T>, action: ChipsFactory.(T) -> Chip) {
-	val factory = ChipsFactory(context)
-	data.forEach {
-		val chip = factory.action(it)
-		addView(chip)
-	}
-}
-
 fun RecyclerView.clearItemDecorations() {
 	while (itemDecorationCount > 0) {
 		removeItemDecorationAt(0)

app/src/main/res/color/tab_text.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+	<item android:color="?colorPrimary" android:state_selected="true" />
+	<item android:alpha="0.6" android:color="?colorOnSurface" />
+</selector>

app/src/main/res/drawable/bg_reader_indicator.xml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+	android:shape="rectangle">
+	<corners android:radius="16dp" />
+	<solid android:color="@color/dim" />
+	<padding
+		android:bottom="8dp"
+		android:left="12dp"
+		android:right="12dp"
+		android:top="8dp" />
+</shape>

app/src/main/res/drawable/tab_indicator.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape
+	xmlns:android="http://schemas.android.com/apk/res/android"
+	android:shape="rectangle">
+	<corners
+		android:topLeftRadius="3dp"
+		android:topRightRadius="3dp" />
+	<size android:height="3dp" />
+</shape>

app/src/main/res/drawable/tabs_background.xml

@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layer-list
+	xmlns:android="http://schemas.android.com/apk/res/android">
+	<item>
+		<shape android:shape="rectangle">
+			<solid android:color="?colorSurface" />
+		</shape>
+	</item>
+	<item
+		android:left="-2dp"
+		android:right="-2dp"
+		android:top="-2dp">
+		<shape>
+			<solid android:color="@android:color/transparent" />
+			<stroke
+				android:width="1dp"
+				android:color="@color/tabs_line" />
+		</shape>
+	</item>
+</layer-list>

app/src/main/res/layout-w600dp/activity_details.xml

@@ -23,13 +23,14 @@
 
 			<com.google.android.material.tabs.TabLayout
 				android:id="@+id/tabs"
-				style="@style/Widget.MaterialComponents.TabLayout.Colored"
+				style="@style/Widget.MaterialComponents.TabLayout.PrimarySurface"
 				android:layout_width="wrap_content"
 				android:layout_height="wrap_content"
 				android:layout_gravity="end"
 				android:background="@android:color/transparent"
 				app:tabGravity="start"
-				app:tabMode="scrollable" />
+				app:tabMode="scrollable"
+				app:tabSelectedTextColor="?colorOnPrimarySurface" />
 
 		</com.google.android.material.appbar.MaterialToolbar>
 

app/src/main/res/layout-w600dp/fragment_details.xml

@@ -23,13 +23,14 @@
 			app:layout_constraintTop_toTopOf="parent"
 			app:layout_constraintWidth_percent="0.3" />
 
-
-		<com.google.android.material.chip.ChipGroup
+		<org.koitharu.kotatsu.base.ui.widgets.ChipsView
 			android:id="@+id/chips_tags"
 			android:layout_width="0dp"
 			android:layout_height="wrap_content"
 			android:layout_marginTop="4dp"
 			android:padding="6dp"
+			app:chipSpacingHorizontal="4dp"
+			app:chipSpacingVertical="6dp"
 			app:layout_constraintEnd_toEndOf="@id/imageView_cover"
 			app:layout_constraintStart_toStartOf="@id/imageView_cover"
 			app:layout_constraintTop_toBottomOf="@id/imageView_cover" />

app/src/main/res/layout-w600dp/fragment_list.xml

@@ -19,6 +19,8 @@
 			android:layout_width="match_parent"
 			android:layout_height="match_parent"
 			android:orientation="vertical"
+			android:padding="@dimen/grid_spacing_outer"
+			android:scrollbarStyle="outsideOverlay"
 			android:scrollbars="vertical"
 			app:fastScrollEnabled="true"
 			app:fastScrollHorizontalThumbDrawable="@drawable/list_thumb"

app/src/main/res/layout/activity_reader.xml

@@ -2,6 +2,7 @@
 <FrameLayout
 	xmlns:android="http://schemas.android.com/apk/res/android"
 	xmlns:app="http://schemas.android.com/apk/res-auto"
+	xmlns:tools="http://schemas.android.com/tools"
 	android:layout_width="match_parent"
 	android:layout_height="match_parent"
 	android:keepScreenOn="true">
@@ -11,14 +12,19 @@
 		android:layout_width="match_parent"
 		android:layout_height="match_parent" />
 
-	<ProgressBar
-		android:id="@+id/progressBar_bottom"
-		android:layout_width="match_parent"
+	<org.koitharu.kotatsu.reader.ui.ReaderToastView
+		android:id="@+id/toastView"
+		android:layout_width="wrap_content"
 		android:layout_height="wrap_content"
-		android:indeterminate="true"
-		android:layout_gravity="bottom"
+		android:layout_gravity="bottom|center_horizontal"
 		android:layout_marginBottom="20dp"
-		style="@style/Widget.AppCompat.ProgressBar.Horizontal" />
+		android:background="@drawable/bg_reader_indicator"
+		android:singleLine="true"
+		android:drawablePadding="6dp"
+		android:textAppearance="?android:textAppearanceSmall"
+		android:textColor="?android:textColorPrimary"
+		android:theme="@style/ThemeOverlay.MaterialComponents.Dark"
+		tools:text="@string/loading_" />
 
 	<com.google.android.material.appbar.AppBarLayout
 		android:id="@+id/appbar_top"
@@ -45,7 +51,8 @@
 		android:background="@color/dim"
 		android:elevation="0dp"
 		android:theme="@style/AppToolbarTheme"
-		app:elevation="0dp">
+		app:elevation="0dp"
+		tools:visibility="gone">
 
 		<com.google.android.material.appbar.MaterialToolbar
 			android:id="@+id/toolbar_bottom"

app/src/main/res/layout/dialog_favorite_categories.xml

@@ -10,7 +10,6 @@
 	<TextView
 		style="@style/MaterialAlertDialog.MaterialComponents.Title.Text"
 		android:padding="16dp"
-		android:textColor="?android:textColorSecondary"
 		android:layout_width="match_parent"
 		android:layout_height="wrap_content"
 		android:text="@string/add_to_favourites" />

app/src/main/res/layout/dialog_list_mode.xml

@@ -44,7 +44,7 @@
 
 	<TextView
 		android:id="@+id/textView_grid_title"
-		style="?android:attr/windowTitleStyle"
+		style="@style/MaterialAlertDialog.MaterialComponents.Title.Text"
 		android:layout_width="match_parent"
 		android:layout_height="wrap_content"
 		android:paddingLeft="?attr/dialogPreferredPadding"

app/src/main/res/layout/fragment_chapters.xml

@@ -1,18 +1,34 @@
 <?xml version="1.0" encoding="utf-8"?>
-<FrameLayout
+<RelativeLayout
 	xmlns:android="http://schemas.android.com/apk/res/android"
 	xmlns:app="http://schemas.android.com/apk/res-auto"
 	xmlns:tools="http://schemas.android.com/tools"
 	android:layout_width="match_parent"
 	android:layout_height="match_parent">
 
+	<Spinner
+		android:id="@+id/spinner_branches"
+		android:layout_width="0dp"
+		android:layout_height="wrap_content"
+		android:layout_alignParentStart="true"
+		android:layout_alignParentTop="true"
+		android:layout_alignParentEnd="true"
+		android:visibility="gone"
+		tools:listitem="@layout/item_branch" />
+
 	<androidx.recyclerview.widget.RecyclerView
 		android:id="@+id/recyclerView_chapters"
-		android:layout_width="match_parent"
-		android:layout_height="match_parent"
+		android:layout_width="0dp"
+		android:layout_height="0dp"
+		android:layout_alignWithParentIfMissing="true"
+		android:layout_below="@id/spinner_branches"
+		android:layout_alignParentStart="true"
+		android:layout_alignParentEnd="true"
+		android:layout_alignParentBottom="true"
 		android:orientation="vertical"
 		android:scrollbars="vertical"
 		app:fastScrollEnabled="true"
+		android:scrollbarStyle="outsideOverlay"
 		app:fastScrollHorizontalThumbDrawable="@drawable/list_thumb"
 		app:fastScrollHorizontalTrackDrawable="@drawable/list_track"
 		app:fastScrollVerticalThumbDrawable="@drawable/list_thumb"
@@ -25,8 +41,9 @@
 		style="@style/Widget.AppCompat.ProgressBar"
 		android:layout_width="wrap_content"
 		android:layout_height="wrap_content"
+		android:layout_centerInParent="true"
 		android:layout_gravity="center"
 		android:visibility="gone"
 		tools:visibility="visible" />
 
-</FrameLayout>
+</RelativeLayout>

app/src/main/res/layout/fragment_details.xml

@@ -113,7 +113,7 @@
 			app:layout_constraintStart_toStartOf="parent"
 			app:layout_constraintTop_toBottomOf="@id/barrier_title" />
 
-		<com.google.android.material.chip.ChipGroup
+		<org.koitharu.kotatsu.base.ui.widgets.ChipsView
 			android:id="@+id/chips_tags"
 			android:layout_width="0dp"
 			android:layout_height="wrap_content"

app/src/main/res/layout/fragment_favourites.xml

@@ -10,7 +10,6 @@
 		android:id="@+id/tabs"
 		android:layout_width="match_parent"
 		android:layout_height="wrap_content"
-		android:elevation="4dp"
 		app:tabGravity="center"
 		app:tabMode="scrollable" />
 

app/src/main/res/layout/fragment_feed.xml

@@ -8,6 +8,8 @@
 	android:layout_height="match_parent"
 	android:clipToPadding="false"
 	android:orientation="vertical"
+	android:padding="@dimen/grid_spacing_outer"
+	android:scrollbarStyle="outsideOverlay"
 	android:scrollbars="vertical"
 	app:fastScrollEnabled="true"
 	app:fastScrollHorizontalThumbDrawable="@drawable/list_thumb"

app/src/main/res/layout/fragment_list.xml

@@ -1,50 +1,45 @@
 <?xml version="1.0" encoding="utf-8"?>
-<LinearLayout
+<androidx.drawerlayout.widget.DrawerLayout
 	xmlns:android="http://schemas.android.com/apk/res/android"
 	xmlns:app="http://schemas.android.com/apk/res-auto"
 	xmlns:tools="http://schemas.android.com/tools"
 	android:layout_width="match_parent"
-	android:layout_height="match_parent"
-	android:orientation="vertical">
+	android:layout_height="match_parent">
 
-	<androidx.drawerlayout.widget.DrawerLayout
-		android:id="@+id/drawer"
+	<androidx.swiperefreshlayout.widget.SwipeRefreshLayout
+		android:id="@+id/swipeRefreshLayout"
 		android:layout_width="match_parent"
 		android:layout_height="match_parent">
 
-		<androidx.swiperefreshlayout.widget.SwipeRefreshLayout
-			android:id="@+id/swipeRefreshLayout"
-			android:layout_width="match_parent"
-			android:layout_height="match_parent">
-
-			<androidx.recyclerview.widget.RecyclerView
-				android:id="@+id/recyclerView"
-				android:layout_width="match_parent"
-				android:layout_height="match_parent"
-				android:clipToPadding="false"
-				android:orientation="vertical"
-				android:scrollbars="vertical"
-				app:fastScrollEnabled="true"
-				app:fastScrollHorizontalThumbDrawable="@drawable/list_thumb"
-				app:fastScrollHorizontalTrackDrawable="@drawable/list_track"
-				app:fastScrollVerticalThumbDrawable="@drawable/list_thumb"
-				app:fastScrollVerticalTrackDrawable="@drawable/list_track"
-				app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"
-				tools:listitem="@layout/item_manga_list" />
-
-		</androidx.swiperefreshlayout.widget.SwipeRefreshLayout>
-
 		<androidx.recyclerview.widget.RecyclerView
-			android:id="@+id/recyclerView_filter"
-			android:layout_width="240dp"
+			android:id="@+id/recyclerView"
+			android:layout_width="match_parent"
 			android:layout_height="match_parent"
-			android:layout_gravity="end"
-			android:background="?android:windowBackground"
 			android:clipToPadding="false"
 			android:orientation="vertical"
+			android:padding="@dimen/grid_spacing_outer"
+			android:scrollbarStyle="outsideOverlay"
 			android:scrollbars="vertical"
+			app:fastScrollEnabled="true"
+			app:fastScrollHorizontalThumbDrawable="@drawable/list_thumb"
+			app:fastScrollHorizontalTrackDrawable="@drawable/list_track"
+			app:fastScrollVerticalThumbDrawable="@drawable/list_thumb"
+			app:fastScrollVerticalTrackDrawable="@drawable/list_track"
 			app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"
-			tools:listitem="@layout/item_category_checkable" />
+			tools:listitem="@layout/item_manga_list" />
 
-	</androidx.drawerlayout.widget.DrawerLayout>
-</LinearLayout>
+	</androidx.swiperefreshlayout.widget.SwipeRefreshLayout>
+
+	<androidx.recyclerview.widget.RecyclerView
+		android:id="@+id/recyclerView_filter"
+		android:layout_width="240dp"
+		android:layout_height="match_parent"
+		android:layout_gravity="end"
+		android:background="?android:windowBackground"
+		android:clipToPadding="false"
+		android:orientation="vertical"
+		android:scrollbars="vertical"
+		app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"
+		tools:listitem="@layout/item_category_checkable" />
+
+</androidx.drawerlayout.widget.DrawerLayout>

app/src/main/res/layout/item_branch.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<CheckedTextView
+	xmlns:android="http://schemas.android.com/apk/res/android"
+	style="?android:attr/spinnerItemStyle"
+	android:layout_width="match_parent"
+	android:layout_height="?android:attr/listPreferredItemHeightSmall"
+	android:gravity="center_vertical"
+	android:singleLine="true"
+	android:textAppearance="?android:attr/textAppearanceLargePopupMenu" />

app/src/main/res/layout/item_branch_dropdown.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<CheckedTextView
+	xmlns:android="http://schemas.android.com/apk/res/android"
+	style="?android:attr/spinnerDropDownItemStyle"
+	android:layout_width="match_parent"
+	android:layout_height="?android:attr/listPreferredItemHeightSmall"
+	android:drawableEnd="?android:listChoiceIndicatorSingle"
+	android:singleLine="true"
+	android:textAppearance="?android:attr/textAppearanceLargePopupMenu" />

app/src/main/res/layout/item_manga_grid.xml

@@ -23,6 +23,7 @@
 			android:ellipsize="end"
 			android:gravity="center_vertical|start"
 			android:lines="2"
+			android:elegantTextHeight="true"
 			android:padding="6dp"
 			android:textColor="?android:textColorPrimary"
 			tools:text="@tools:sample/lorem" />

app/src/main/res/layout/sheet_pages.xml

@@ -43,8 +43,8 @@
 		android:id="@+id/recyclerView"
 		android:layout_width="match_parent"
 		android:layout_height="wrap_content"
-		android:scrollbars="vertical"
 		android:padding="@dimen/grid_spacing"
+		android:scrollbars="vertical"
 		app:layoutManager="androidx.recyclerview.widget.GridLayoutManager"
 		app:spanCount="3"
 		tools:listitem="@layout/item_page_thumb" />

app/src/main/res/values-night/colors.xml

@@ -6,4 +6,5 @@
 	<color name="red_accent">#FF8A65</color>
 	<color name="dim">#99000000</color>
 	<color name="error">#E57373</color>
+	<color name="tabs_line">#5E636A</color>
 </resources>

app/src/main/res/values-ru/strings.xml

@@ -200,4 +200,5 @@
 	<string name="sign_in">Войти</string>
 	<string name="auth_required">Для просмотра этого контента требуется авторизация</string>
 	<string name="default_s">По умолчанию: %s</string>
+	<string name="_and_x_more">…и ещё %1$d</string>
 </resources>

app/src/main/res/values-v29/themes.xml

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
+
 	<style name="BaseAppTheme" parent="Theme.MaterialComponents.DayNight.NoActionBar">
 		<item name="windowActionModeOverlay">true</item>
 		<item name="actionModeCloseDrawable">@drawable/ic_cross</item>
@@ -8,5 +9,7 @@
 		<item name="badgeStyle">@style/Widget.MaterialComponents.Badge</item>
 		<item name="android:statusBarColor">@color/status_bar</item>
 		<item name="android:navigationBarColor">@android:color/transparent</item>
+		<item name="colorOnPrimary">@android:color/white</item>
+		<item name="tabStyle">@style/Widget.MaterialComponents.TabLayout.New</item>
 	</style>
 </resources>

app/src/main/res/values-w600dp/dimens.xml

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
 	<dimen name="grid_spacing">4dp</dimen>
+	<dimen name="grid_spacing_outer">2dp</dimen>
 	<dimen name="preferred_grid_width">140dp</dimen>
 </resources>

app/src/main/res/values/colors.xml

@@ -9,4 +9,5 @@
 	<color name="dim">#99000000</color>
 	<color name="error">#D32F2F</color>
 	<color name="status_bar">#33000000</color>
+	<color name="tabs_line">#C3CFDD</color>
 </resources>

app/src/main/res/values/dimens.xml

@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
 	<dimen name="grid_spacing">2.5dp</dimen>
+	<dimen name="grid_spacing_outer">2dp</dimen>
 	<dimen name="manga_list_item_height">84dp</dimen>
 	<dimen name="manga_list_details_item_height">120dp</dimen>
 	<dimen name="chapter_list_item_height">46dp</dimen>

app/src/main/res/values/strings.xml

@@ -202,4 +202,5 @@
 	<string name="sign_in">Sign in</string>
 	<string name="auth_required">You should authorize to view this content</string>
 	<string name="default_s">Default: %s</string>
+	<string name="_and_x_more">…and %1$d more</string>
 </resources>

app/src/main/res/values/styles.xml

@@ -25,4 +25,19 @@
 		<item name="background">@color/grey</item>
 	</style>
 
+	<style name="Widget.MaterialComponents.TabLayout.New">
+		<item name="tabIndicatorFullWidth">false</item>
+		<item name="android:background">@drawable/tabs_background</item>
+		<item name="tabIndicator">@drawable/tab_indicator</item>
+		<item name="tabIconTint">@color/tab_text</item>
+		<item name="tabSelectedTextColor">?colorPrimary</item>
+		<item name="tabTextColor">@color/tab_text</item>
+		<item name="tabTextAppearance">@style/TextAppearance.Design.Tab.New</item>
+	</style>
+
+	<style name="TextAppearance.Design.Tab.New">
+		<item name="textAllCaps">false</item>
+		<item name="android:textAllCaps">false</item>
+	</style>
+
 </resources>

app/src/main/res/values/themes.xml

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
+
 	<style name="BaseAppTheme" parent="Theme.MaterialComponents.DayNight.NoActionBar">
 		<item name="android:windowActionModeOverlay">true</item>
 		<item name="windowActionModeOverlay">true</item>
@@ -8,6 +9,8 @@
 		<item name="preferenceTheme">@style/PreferenceThemeOverlay</item>
 		<item name="badgeStyle">@style/Widget.MaterialComponents.Badge</item>
 		<item name="android:statusBarColor">@color/status_bar</item>
+		<item name="colorOnPrimary">@android:color/white</item>
+		<item name="tabStyle">@style/Widget.MaterialComponents.TabLayout.New</item>
 	</style>
 
 	<style name="AppTheme" parent="BaseAppTheme">

build.gradle

@@ -1,13 +1,12 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 buildscript {
-	ext.kotlin_version = '1.4.21'
 	repositories {
 		google()
 		jcenter()
 	}
 	dependencies {
 		classpath 'com.android.tools.build:gradle:4.1.2'
-		classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
+		classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:1.4.31"
 
 		// NOTE: Do not place your application dependencies here; they belong
 		// in the individual module build.gradle files

gradle/wrapper/gradle-wrapper.properties

@@ -4,3 +4,4 @@ distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
 distributionUrl=https\://services.gradle.org/distributions/gradle-6.7.1-all.zip
+distributionSha256Sum=22449f5231796abd892c98b2a07c9ceebe4688d192cd2d6763f8e3bf8acbedeb

metadata/en-US/full_description.txt

@@ -0,0 +1,12 @@
+Kotatsu is a free and open source manga reader for Android.<br>
+Main Features:
+<ul>
+<li>Online manga catalogues</li>
+<li>Search manga by name and genre</li>
+<li>Reading history</li>
+<li>Favourites organized by user-defined categories</li>
+<li>Downloading manga and reading it offline. Third-party CBZ archives also supported</li>
+<li>Tablet-optimized material design UI</li>
+<li>Standard and Webtoon-optimized reader</li>
+<li>Notifications about new chapters with updates feed</li>
+ </ul>

metadata/en-US/short_description.txt

@@ -0,0 +1 @@
+Manga reader with online catalogues

metadata/ru/full_description.txt

@@ -0,0 +1,12 @@
+Kotatsu - приложения для чтения манги с открытым исходным кодом.<br>
+Основные возможности:
+<ul>
+<li>Онлайн каталоги с мангой</li>
+<li>Поиск манги по имени и жанрам</li>
+<li>История чтения</li>
+<li>Избранное с пользовательскими категориями</li>
+<li>Возможность сохранять мангу и читать её оффлайн. Поддержка сторонних комиксов в формате CBZ</li>
+<li>Интерфейс также оптимизирован для планшетов</li>
+<li>Поддержка манхвы (Webtoon)</li>
+<li>Уведомления о новых главах и лента обновлений</li>
+ </ul>

metadata/ru/short_description.txt

@@ -0,0 +1 @@
+Приложение для чтения манги с онлайн каталогами