Configure default reader mode #160 #142

app/src/main/java/org/koitharu/kotatsu/base/domain/MangaUtils.kt

@@ -3,9 +3,6 @@ package org.koitharu.kotatsu.base.domain
 import android.graphics.BitmapFactory
 import android.net.Uri
 import android.util.Size
-import java.io.File
-import java.io.InputStream
-import java.util.zip.ZipFile
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.runInterruptible
 import okhttp3.OkHttpClient
@@ -16,46 +13,46 @@ import org.koitharu.kotatsu.core.network.CommonHeaders
 import org.koitharu.kotatsu.core.parser.MangaRepository
 import org.koitharu.kotatsu.parsers.model.MangaPage
 import org.koitharu.kotatsu.parsers.util.await
-import org.koitharu.kotatsu.parsers.util.medianOrNull
-import org.koitharu.kotatsu.utils.ext.printStackTraceDebug
+import java.io.File
+import java.io.InputStream
+import java.util.zip.ZipFile
+import kotlin.math.roundToInt
 
 object MangaUtils : KoinComponent {
 
+	private const val MIN_WEBTOON_RATIO = 2
+
 	/**
 	 * Automatic determine type of manga by page size
 	 * @return ReaderMode.WEBTOON if page is wide
 	 */
-	suspend fun determineMangaIsWebtoon(pages: List<MangaPage>): Boolean? {
-		try {
-			val page = pages.medianOrNull() ?: return null
-			val url = MangaRepository(page.source).getPageUrl(page)
-			val uri = Uri.parse(url)
-			val size = if (uri.scheme == "cbz") {
-				runInterruptible(Dispatchers.IO) {
-					val zip = ZipFile(uri.schemeSpecificPart)
-					val entry = zip.getEntry(uri.fragment)
-					zip.getInputStream(entry).use {
-						getBitmapSize(it)
-					}
-				}
-			} else {
-				val request = Request.Builder()
-					.url(url)
-					.get()
-					.header(CommonHeaders.REFERER, page.referer)
-					.cacheControl(CommonHeaders.CACHE_CONTROL_DISABLED)
-					.build()
-				get<OkHttpClient>().newCall(request).await().use {
-					runInterruptible(Dispatchers.IO) {
-						getBitmapSize(it.body?.byteStream())
-					}
+	suspend fun determineMangaIsWebtoon(pages: List<MangaPage>): Boolean {
+		val pageIndex = (pages.size * 0.3).roundToInt()
+		val page = requireNotNull(pages.getOrNull(pageIndex)) { "No pages" }
+		val url = MangaRepository(page.source).getPageUrl(page)
+		val uri = Uri.parse(url)
+		val size = if (uri.scheme == "cbz") {
+			runInterruptible(Dispatchers.IO) {
+				val zip = ZipFile(uri.schemeSpecificPart)
+				val entry = zip.getEntry(uri.fragment)
+				zip.getInputStream(entry).use {
+					getBitmapSize(it)
+				}
+			}
+		} else {
+			val request = Request.Builder()
+				.url(url)
+				.get()
+				.header(CommonHeaders.REFERER, page.referer)
+				.cacheControl(CommonHeaders.CACHE_CONTROL_DISABLED)
+				.build()
+			get<OkHttpClient>().newCall(request).await().use {
+				runInterruptible(Dispatchers.IO) {
+					getBitmapSize(it.body?.byteStream())
 				}
 			}
-			return size.width * 2 < size.height
-		} catch (e: Exception) {
-			e.printStackTraceDebug()
-			return null
 		}
+		return size.width * MIN_WEBTOON_RATIO < size.height
 	}
 
 	suspend fun getImageMimeType(file: File): String? = runInterruptible(Dispatchers.IO) {

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

@@ -99,8 +99,11 @@ class AppSettings(context: Context) {
 	val readerAnimation: Boolean
 		get() = prefs.getBoolean(KEY_READER_ANIMATION, false)
 
-	val isPreferRtlReader: Boolean
-		get() = prefs.getBoolean(KEY_READER_PREFER_RTL, false)
+	val defaultReaderMode: ReaderMode
+		get() = prefs.getEnumValue(KEY_READER_MODE, ReaderMode.STANDARD)
+
+	val isReaderModeDetectionEnabled: Boolean
+		get() = prefs.getBoolean(KEY_READER_MODE_DETECT, true)
 
 	var historyGrouping: Boolean
 		get() = prefs.getBoolean(KEY_HISTORY_GROUPING, true)
@@ -287,7 +290,8 @@ class AppSettings(context: Context) {
 		const val KEY_NOTIFICATIONS_LIGHT = "notifications_light"
 		const val KEY_NOTIFICATIONS_INFO = "tracker_notifications_info"
 		const val KEY_READER_ANIMATION = "reader_animation"
-		const val KEY_READER_PREFER_RTL = "reader_prefer_rtl"
+		const val KEY_READER_MODE = "reader_mode"
+		const val KEY_READER_MODE_DETECT = "reader_mode_detect"
 		const val KEY_APP_PASSWORD = "app_password"
 		const val KEY_PROTECT_APP = "protect_app"
 		const val KEY_APP_VERSION = "app_version"

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

@@ -6,6 +6,7 @@ import androidx.activity.result.ActivityResultLauncher
 import androidx.lifecycle.LiveData
 import androidx.lifecycle.MutableLiveData
 import androidx.lifecycle.viewModelScope
+import java.util.*
 import kotlinx.coroutines.*
 import kotlinx.coroutines.flow.*
 import org.koitharu.kotatsu.R
@@ -31,7 +32,6 @@ import org.koitharu.kotatsu.utils.SingleLiveEvent
 import org.koitharu.kotatsu.utils.ext.asLiveDataDistinct
 import org.koitharu.kotatsu.utils.ext.printStackTraceDebug
 import org.koitharu.kotatsu.utils.ext.processLifecycleScope
-import java.util.*
 
 private const val BOUNDS_PAGE_OFFSET = 2
 private const val PAGES_TRIM_THRESHOLD = 120
@@ -264,15 +264,7 @@ class ReaderViewModel(
 				chapters.put(it.id, it)
 			}
 			// determine mode
-			val mode = dataRepository.getReaderMode(manga.id) ?: manga.chapters?.randomOrNull()?.let {
-				val pages = repo.getPages(it)
-				val isWebtoon = MangaUtils.determineMangaIsWebtoon(pages)
-				val newMode = getReaderMode(isWebtoon)
-				if (isWebtoon != null) {
-					dataRepository.savePreferences(manga, newMode)
-				}
-				newMode
-			} ?: error("There are no chapters in this manga")
+			val mode = detectReaderMode(manga, repo)
 			// obtain state
 			if (currentState.value == null) {
 				currentState.value = historyRepository.getOne(manga)?.let {
@@ -295,12 +287,6 @@ class ReaderViewModel(
 		}
 	}
 
-	private fun getReaderMode(isWebtoon: Boolean?) = when {
-		isWebtoon == true -> ReaderMode.WEBTOON
-		settings.isPreferRtlReader -> ReaderMode.REVERSED
-		else -> ReaderMode.STANDARD
-	}
-
 	private suspend fun loadChapter(chapterId: Long): List<ReaderPage> {
 		val manga = checkNotNull(mangaData.value) { "Manga is null" }
 		val chapter = checkNotNull(chapters[chapterId]) { "Requested chapter not found" }
@@ -358,6 +344,26 @@ class ReaderViewModel(
 			subList(fromIndexBounded, toIndexBounded)
 		}
 	}
+
+	private suspend fun detectReaderMode(manga: Manga, repo: MangaRepository): ReaderMode {
+		dataRepository.getReaderMode(manga.id)?.let { return it }
+		val defaultMode = settings.defaultReaderMode
+		if (!settings.isReaderModeDetectionEnabled || defaultMode == ReaderMode.WEBTOON) {
+			return defaultMode
+		}
+		val chapter = currentState.value?.chapterId?.let(chapters::get)
+			?: manga.chapters?.randomOrNull()
+			?: error("There are no chapters in this manga")
+		val pages = repo.getPages(chapter)
+		return runCatching {
+			val isWebtoon = MangaUtils.determineMangaIsWebtoon(pages)
+			if (isWebtoon) ReaderMode.WEBTOON else defaultMode
+		}.onSuccess {
+			dataRepository.savePreferences(manga, it)
+		}.onFailure {
+			it.printStackTraceDebug()
+		}.getOrDefault(defaultMode)
+	}
 }
 
 /**

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

@@ -12,9 +12,9 @@ import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.base.ui.BasePreferenceFragment
 import org.koitharu.kotatsu.core.prefs.AppSettings
 import org.koitharu.kotatsu.core.prefs.ListMode
+import org.koitharu.kotatsu.parsers.util.names
 import org.koitharu.kotatsu.settings.protect.ProtectSetupActivity
 import org.koitharu.kotatsu.settings.utils.SliderPreference
-import org.koitharu.kotatsu.utils.ext.names
 import org.koitharu.kotatsu.utils.ext.setDefaultValueCompat
 import java.util.*
 

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

@@ -13,9 +13,9 @@ import org.koitharu.kotatsu.base.ui.dialog.StorageSelectDialog
 import org.koitharu.kotatsu.core.network.DoHProvider
 import org.koitharu.kotatsu.core.prefs.AppSettings
 import org.koitharu.kotatsu.local.data.LocalStorageManager
+import org.koitharu.kotatsu.parsers.util.names
 import org.koitharu.kotatsu.settings.utils.SliderPreference
 import org.koitharu.kotatsu.utils.ext.getStorageName
-import org.koitharu.kotatsu.utils.ext.names
 import org.koitharu.kotatsu.utils.ext.setDefaultValueCompat
 import org.koitharu.kotatsu.utils.ext.viewLifecycleScope
 import java.io.File
@@ -41,7 +41,12 @@ class ContentSettingsFragment :
 			}
 		}
 		findPreference<ListPreference>(AppSettings.KEY_DOH)?.run {
-			entryValues = enumValues<DoHProvider>().names()
+			entryValues = arrayOf(
+				DoHProvider.NONE,
+				DoHProvider.GOOGLE,
+				DoHProvider.CLOUDFLARE,
+				DoHProvider.ADGUARD,
+			).names()
 			setDefaultValueCompat(DoHProvider.NONE.name)
 		}
 		bindRemoteSourcesSummary()

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

@@ -1,26 +1,68 @@
 package org.koitharu.kotatsu.settings
 
+import android.content.SharedPreferences
 import android.os.Bundle
+import android.view.View
 import androidx.preference.ListPreference
 import androidx.preference.MultiSelectListPreference
+import androidx.preference.Preference
 import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.base.ui.BasePreferenceFragment
 import org.koitharu.kotatsu.core.model.ZoomMode
 import org.koitharu.kotatsu.core.prefs.AppSettings
+import org.koitharu.kotatsu.core.prefs.ReaderMode
+import org.koitharu.kotatsu.parsers.util.names
 import org.koitharu.kotatsu.settings.utils.MultiSummaryProvider
-import org.koitharu.kotatsu.utils.ext.names
 import org.koitharu.kotatsu.utils.ext.setDefaultValueCompat
 
-class ReaderSettingsFragment : BasePreferenceFragment(R.string.reader_settings) {
+class ReaderSettingsFragment :
+	BasePreferenceFragment(R.string.reader_settings),
+	SharedPreferences.OnSharedPreferenceChangeListener {
 
 	override fun onCreatePreferences(savedInstanceState: Bundle?, rootKey: String?) {
 		addPreferencesFromResource(R.xml.pref_reader)
-		findPreference<MultiSelectListPreference>(AppSettings.KEY_READER_SWITCHERS)?.let {
-			it.summaryProvider = MultiSummaryProvider(R.string.gestures_only)
+		findPreference<ListPreference>(AppSettings.KEY_READER_MODE)?.run {
+			entryValues = arrayOf(
+				ReaderMode.STANDARD,
+				ReaderMode.REVERSED,
+				ReaderMode.WEBTOON,
+			).names()
+			setDefaultValueCompat(ReaderMode.STANDARD.name)
 		}
-		findPreference<ListPreference>(AppSettings.KEY_ZOOM_MODE)?.let {
-			it.entryValues = ZoomMode.values().names()
-			it.setDefaultValueCompat(ZoomMode.FIT_CENTER.name)
+		findPreference<MultiSelectListPreference>(AppSettings.KEY_READER_SWITCHERS)?.run {
+			summaryProvider = MultiSummaryProvider(R.string.gestures_only)
+		}
+		findPreference<ListPreference>(AppSettings.KEY_ZOOM_MODE)?.run {
+			entryValues = arrayOf(
+				ZoomMode.FIT_CENTER,
+				ZoomMode.FIT_HEIGHT,
+				ZoomMode.FIT_WIDTH,
+				ZoomMode.KEEP_START,
+			).names()
+			setDefaultValueCompat(ZoomMode.FIT_CENTER.name)
+		}
+		updateReaderModeDependency()
+	}
+
+	override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+		super.onViewCreated(view, savedInstanceState)
+		settings.subscribe(this)
+	}
+
+	override fun onDestroyView() {
+		settings.unsubscribe(this)
+		super.onDestroyView()
+	}
+
+	override fun onSharedPreferenceChanged(sharedPreferences: SharedPreferences?, key: String?) {
+		when (key) {
+			AppSettings.KEY_READER_MODE -> updateReaderModeDependency()
+		}
+	}
+
+	private fun updateReaderModeDependency() {
+		findPreference<Preference>(AppSettings.KEY_READER_MODE_DETECT)?.run {
+			isEnabled = settings.defaultReaderMode != ReaderMode.WEBTOON
 		}
 	}
 }

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

@@ -3,10 +3,6 @@ package org.koitharu.kotatsu.utils.ext
 import androidx.collection.ArraySet
 import java.util.*
 
-fun <T : Enum<T>> Array<T>.names() = Array(size) { i ->
-	this[i].name
-}
-
 fun <T> MutableList<T>.move(sourceIndex: Int, targetIndex: Int) {
 	if (sourceIndex <= targetIndex) {
 		Collections.rotate(subList(sourceIndex, targetIndex + 1), -1)

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

@@ -40,4 +40,9 @@
 		<item>CloudFlare</item>
 		<item>AdGuard</item>
 	</string-array>
+	<string-array name="reader_modes">
+		<item>@string/standard</item>
+		<item>@string/right_to_left</item>
+		<item>@string/webtoon</item>
+	</string-array>
 </resources>

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

@@ -160,8 +160,6 @@
 	<string name="update_check_failed">Could not look for updates</string>
 	<string name="no_update_available">No updates available</string>
 	<string name="right_to_left">Right-to-left (←)</string>
-	<string name="prefer_rtl_reader">Prefer right-to-left (←) reader</string>
-	<string name="prefer_rtl_reader_summary">Reading mode can be set up separately for each series</string>
 	<string name="create_category">New category</string>
 	<string name="scale_mode">Scale mode</string>
 	<string name="zoom_mode_fit_center">Fit center</string>
@@ -296,4 +294,7 @@
 	<string name="undo">Undo</string>
 	<string name="removed_from_history">Removed from history</string>
 	<string name="dns_over_https">DNS over HTTPS</string>
+	<string name="default_mode">Default mode</string>
+	<string name="detect_reader_mode">Autodetect reader mode</string>
+	<string name="detect_reader_mode_summary">Automatically detect if manga is webtoon</string>
 </resources>

app/src/main/res/xml/pref_reader.xml

@@ -3,11 +3,17 @@
 	xmlns:android="http://schemas.android.com/apk/res/android"
 	xmlns:app="http://schemas.android.com/apk/res-auto">
 
+	<ListPreference
+		android:entries="@array/reader_modes"
+		android:key="reader_mode"
+		android:title="@string/default_mode"
+		app:useSimpleSummaryProvider="true" />
+
 	<SwitchPreferenceCompat
-		android:defaultValue="false"
-		android:key="reader_prefer_rtl"
-		android:summary="@string/prefer_rtl_reader_summary"
-		android:title="@string/prefer_rtl_reader" />
+		android:defaultValue="true"
+		android:key="reader_mode_detect"
+		android:summary="@string/detect_reader_mode_summary"
+		android:title="@string/detect_reader_mode" />
 
 	<ListPreference
 		android:entries="@array/zoom_modes"