Invert seekbar and textviews on right to left reader

app/src/main/java/eu/kanade/mangafeed/ui/reader/ReaderActivity.java

@@ -57,10 +57,10 @@ public class ReaderActivity extends BaseRxActivity<ReaderPresenter> {
     protected CompositeSubscription subscriptions;
     private Subscription customBrightnessSubscription;
 
-    private static final int LEFT_TO_RIGHT = 1;
-    private static final int RIGHT_TO_LEFT = 2;
-    private static final int VERTICAL = 3;
-    private static final int WEBTOON = 4;
+    public static final int LEFT_TO_RIGHT = 1;
+    public static final int RIGHT_TO_LEFT = 2;
+    public static final int VERTICAL = 3;
+    public static final int WEBTOON = 4;
 
     public static final int BLACK_THEME = 1;
 

app/src/main/java/eu/kanade/mangafeed/ui/reader/ReaderMenu.java

@@ -48,6 +48,7 @@ public class ReaderMenu {
     @State boolean showing;
     private PopupWindow settingsPopup;
     private PopupWindow brightnessPopup;
+    private boolean inverted;
 
     private DecimalFormat decimalFormat;
 
@@ -61,6 +62,7 @@ public class ReaderMenu {
 
         seekBar.setOnSeekBarChangeListener(new PageSeekBarChangeListener());
         decimalFormat = new DecimalFormat("#.##");
+        inverted = false;
 
         initializeOptions();
     }
@@ -105,7 +107,19 @@ public class ReaderMenu {
     }
 
     public void onChapterReady(int numPages, Manga manga, Chapter chapter) {
+        if (manga.viewer == ReaderActivity.RIGHT_TO_LEFT && !inverted) {
+            // Invert the seekbar and textview fields for the right to left reader
+            seekBar.setRotation(180);
+            TextView aux = currentPage;
+            currentPage = totalPages;
+            totalPages = aux;
+            // Don't invert again on chapter change
+            inverted = true;
+        }
+
+        // Set initial values
         totalPages.setText("" + numPages);
+        currentPage.setText("" + (chapter.last_page_read + 1));
         seekBar.setMax(numPages - 1);
 
         activity.setToolbarTitle(manga.title);