Better RTL support in manga details and library

app/src/main/java/eu/kanade/tachiyomi/ui/library/LibraryController.kt

@@ -54,6 +54,7 @@ import eu.kanade.tachiyomi.ui.manga.MangaDetailsController
 import eu.kanade.tachiyomi.ui.migration.manga.design.PreMigrationController
 import eu.kanade.tachiyomi.ui.reader.ReaderActivity
 import eu.kanade.tachiyomi.util.system.dpToPx
+import eu.kanade.tachiyomi.util.system.dpToPxEnd
 import eu.kanade.tachiyomi.util.system.getResourceColor
 import eu.kanade.tachiyomi.util.system.launchUI
 import eu.kanade.tachiyomi.util.system.toast
@@ -169,7 +170,7 @@ class LibraryController(
                     text_view_m.translationY = view.height *
                         (index.toFloat() / (adapter.headerItems.size + 1))
                     - text_view_m.height / 2 + 16.dpToPx
-                    text_view_m.translationX = 45f.dpToPx
+                    text_view_m.translationX = 45f.dpToPxEnd
                     text_view_m.alpha = 1f
                     text_view_m.text = headerItem.category.name
                 }
@@ -189,7 +190,7 @@ class LibraryController(
                 }
                 RecyclerView.SCROLL_STATE_IDLE -> {
                     scrollAnim = fast_scroller.animate().setStartDelay(1000).setDuration(250)
-                        .translationX(25f.dpToPx)
+                        .translationX(25f.dpToPxEnd)
                     scrollAnim?.start()
                 }
             }
@@ -199,7 +200,8 @@ class LibraryController(
     private fun hideScroller(duration: Long = 1000) {
         if (alwaysShowScroller) return
         scrollAnim =
-            fast_scroller.animate().setStartDelay(duration).setDuration(250).translationX(25f.dpToPx)
+            fast_scroller.animate().setStartDelay(duration).setDuration(250)
+                .translationX(25f.dpToPxEnd)
         scrollAnim?.start()
     }
 
@@ -219,7 +221,7 @@ class LibraryController(
         super.onViewCreated(view)
         view.applyWindowInsetsForRootController(activity!!.bottom_nav)
         if (!::presenter.isInitialized) presenter = LibraryPresenter(this)
-        if (!alwaysShowScroller) fast_scroller.translationX = 25f.dpToPx
+        if (!alwaysShowScroller) fast_scroller.translationX = 25f.dpToPxEnd
         setFastScrollBackground()
 
         adapter = LibraryCategoryAdapter(this)

app/src/main/java/eu/kanade/tachiyomi/ui/manga/MangaDetailsController.kt

@@ -93,6 +93,7 @@ import eu.kanade.tachiyomi.ui.webview.WebViewActivity
 import eu.kanade.tachiyomi.util.storage.getUriCompat
 import eu.kanade.tachiyomi.util.system.ThemeUtil
 import eu.kanade.tachiyomi.util.system.dpToPx
+import eu.kanade.tachiyomi.util.system.dpToPxEnd
 import eu.kanade.tachiyomi.util.system.getResourceColor
 import eu.kanade.tachiyomi.util.system.launchUI
 import eu.kanade.tachiyomi.util.system.pxToDp
@@ -293,7 +294,7 @@ class MangaDetailsController : BaseController,
                         showScroll = show
                         scrollAnim?.cancel()
                         scrollAnim = fast_scroller.animate().setDuration(100).translationX(
-                            if (show) 0f else 25f.dpToPx)
+                            if (show) 0f else 25f.dpToPxEnd)
                         scrollAnim?.start()
                     }
                     if (fPosition > 0 && !showScroll) {
@@ -312,7 +313,7 @@ class MangaDetailsController : BaseController,
     }
 
     private fun setFastScroller() {
-        fast_scroller.translationX = if (showScroll || isTablet) 0f else 25f.dpToPx
+        fast_scroller.translationX = if (showScroll || isTablet) 0f else 25f.dpToPxEnd
         fast_scroller.setupWithRecyclerView(recycler, { position ->
             val letter = adapter?.getSectionText(position)
             when {

app/src/main/java/eu/kanade/tachiyomi/ui/manga/MangaHeaderHolder.kt

@@ -20,6 +20,7 @@ import eu.kanade.tachiyomi.source.LocalSource
 import eu.kanade.tachiyomi.source.model.SManga
 import eu.kanade.tachiyomi.ui.base.holder.BaseFlexibleViewHolder
 import eu.kanade.tachiyomi.util.system.getResourceColor
+import eu.kanade.tachiyomi.util.system.isLTR
 import eu.kanade.tachiyomi.util.view.gone
 import eu.kanade.tachiyomi.util.view.invisible
 import eu.kanade.tachiyomi.util.view.resetStrokeColor
@@ -56,6 +57,8 @@ class MangaHeaderHolder(
                     true
                 false
             }
+            if (!itemView.resources.isLTR)
+                more_bg_gradient.rotation = 180f
             less_button.setOnClickListener { collapseDesc() }
             manga_genres_tags.setOnTagClickListener {
                 adapter.delegate.tagClicked(it)

app/src/main/java/eu/kanade/tachiyomi/util/system/ContextExtensions.kt

@@ -9,14 +9,13 @@ import android.content.Intent
 import android.content.IntentFilter
 import android.content.pm.PackageManager
 import android.content.res.Resources
-import android.graphics.drawable.Drawable
 import android.net.ConnectivityManager
 import android.net.Uri
 import android.os.PowerManager
+import android.view.View
 import android.widget.Toast
 import androidx.annotation.AttrRes
 import androidx.annotation.ColorRes
-import androidx.annotation.DrawableRes
 import androidx.annotation.StringRes
 import androidx.browser.customtabs.CustomTabsIntent
 import androidx.core.app.NotificationCompat
@@ -101,15 +100,6 @@ fun Context.contextCompatColor(@ColorRes resource: Int): Int {
     return ContextCompat.getColor(this, resource)
 }
 
-/**
- * Returns the color from ContextCompat
- *
- * @param resource the color.
- */
-fun Context.contextCompatDrawable(@DrawableRes resource: Int): Drawable? {
-    return ContextCompat.getDrawable(this, resource)
-}
-
 /**
  * Converts to dp.
  */
@@ -125,6 +115,14 @@ val Int.dpToPx: Int
 val Float.dpToPx: Float
     get() = (this * Resources.getSystem().displayMetrics.density)
 
+/** Converts to px and takes into account LTR/RTL layout */
+val Float.dpToPxEnd: Float
+    get() = (this * Resources.getSystem().displayMetrics.density *
+        if (Resources.getSystem().isLTR) 1 else -1)
+
+val Resources.isLTR
+    get() = configuration.layoutDirection == View.LAYOUT_DIRECTION_LTR
+
 /**
  * Property to get the notification manager from the context.
  */

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

@@ -1,8 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
 <layer-list xmlns:android="http://schemas.android.com/apk/res/android">
     <item
-        android:left="0dp"
+        android:start="0dp"
-        android:right="4dp"
+        android:end="4dp"
         android:bottom="4dp"
         android:top="4dp">
         <shape android:shape="rectangle">
@@ -14,7 +14,7 @@
         </shape>
     </item>
     <item
-        android:left="10dp"
+        android:start="10dp"
         android:bottom="4dp"
         android:top="4dp">
         <shape android:shape="rectangle">

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

@@ -117,7 +117,7 @@
 
             <com.google.android.material.textview.MaterialTextView
                 style="@style/TextAppearance.MaterialComponents.Headline6"
-                android:layout_width="match_parent"
+                android:layout_width="wrap_content"
                 android:layout_height="wrap_content"
                 android:layout_marginTop="12dp"
                 android:paddingStart="16dp"
@@ -128,7 +128,7 @@
                 android:id="@+id/sort_method_group"
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
-                android:orientation="vertical"
+                android:orientation="horizontal"
                 android:paddingStart="12dp"
                 android:paddingEnd="12dp">
 

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

@@ -49,9 +49,9 @@
         android:id="@+id/top_view"
         android:layout_width="match_parent"
         android:layout_height="100dp"
-        android:layout_marginTop="0dp"
         app:layout_constraintBottom_toTopOf="@id/cover_card"
         app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintHorizontal_bias="0.0"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toTopOf="parent" />
 
@@ -116,11 +116,13 @@
     <TextView
         android:id="@+id/manga_status"
         style="@style/TextAppearance.Regular.Body1.Secondary"
-        android:layout_width="wrap_content"
+        android:layout_width="0dp"
         android:layout_height="wrap_content"
         android:layout_marginTop="4dp"
+        android:layout_marginEnd="16dp"
         android:text="@string/unknown_status"
         android:textIsSelectable="false"
+        app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="@id/title"
         app:layout_constraintTop_toBottomOf="@+id/manga_author" />
 
@@ -268,7 +270,7 @@
         android:layout_height="wrap_content"
         android:layout_marginEnd="8dp"
         android:text="@string/more"
-        android:textAlignment="textEnd"
+        android:textAlignment="viewEnd"
         app:layout_constraintBottom_toBottomOf="@id/more_guide"
         app:layout_constraintEnd_toEndOf="parent"
         app:rippleColor="@null" />