Show pages numbers in reader

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

@@ -109,6 +109,8 @@ class AppSettings private constructor(private val prefs: SharedPreferences) :
 	val isSourcesSelected: Boolean
 		get() = KEY_SOURCES_HIDDEN in prefs
 
+	val isPagesNumbersEnabled by BoolPreferenceDelegate(KEY_PAGES_NUMBERS, false)
+
 	fun getStorageDir(context: Context): File? {
 		val value = prefs.getString(KEY_LOCAL_STORAGE, null)?.let {
 			File(it)
@@ -195,6 +197,7 @@ class AppSettings private constructor(private val prefs: SharedPreferences) :
 		const val KEY_HISTORY_GROUPING = "history_grouping"
 		const val KEY_REVERSE_CHAPTERS = "reverse_chapters"
 		const val KEY_HISTORY_EXCLUDE_NSFW = "history_exclude_nsfw"
+		const val KEY_PAGES_NUMBERS = "pages_numbers"
 
 		// About
 		const val KEY_APP_UPDATE = "app_update"

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

@@ -1,6 +1,8 @@
 package org.koitharu.kotatsu.reader.ui.pager.reversed
 
 import android.graphics.PointF
+import android.view.Gravity
+import android.widget.FrameLayout
 import com.davemorrissey.labs.subscaleview.SubsamplingScaleImageView
 import org.koitharu.kotatsu.core.exceptions.resolve.ExceptionResolver
 import org.koitharu.kotatsu.core.model.ZoomMode
@@ -16,6 +18,11 @@ class ReversedPageHolder(
 	exceptionResolver: ExceptionResolver
 ) : PageHolder(binding, loader, settings, exceptionResolver) {
 
+	init {
+		(binding.textViewNumber.layoutParams as FrameLayout.LayoutParams)
+			.gravity = Gravity.START or Gravity.BOTTOM
+	}
+
 	override fun onImageShowing(zoom: ZoomMode) {
 		with(binding.ssiv) {
 			maxScale = 2f * maxOf(

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

@@ -20,17 +20,20 @@ import org.koitharu.kotatsu.utils.ext.getDisplayMessage
 open class PageHolder(
 	binding: ItemPageBinding,
 	loader: PageLoader,
-	settings: AppSettings, exceptionResolver: ExceptionResolver
+	settings: AppSettings,
+	exceptionResolver: ExceptionResolver,
 ) : BasePageHolder<ItemPageBinding>(binding, loader, settings, exceptionResolver),
 	View.OnClickListener {
 
 	init {
 		binding.ssiv.setOnImageEventListener(delegate)
 		binding.buttonRetry.setOnClickListener(this)
+		binding.textViewNumber.isVisible = settings.isPagesNumbersEnabled
 	}
 
 	override fun onBind(data: ReaderPage) {
 		delegate.onBind(data.toMangaPage())
+		binding.textViewNumber.text = data.index.toString()
 	}
 
 	override fun onRecycled() {