FossifyGallery/app/src/main/res/menu/menu_editor.xml

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
      xmlns:app="http://schemas.android.com/apk/res-auto">
    <item
        android:id="@+id/save_as"
        android:icon="@drawable/ic_check"
        android:title="@string/save_as"
        app:showAsAction="always"/>
    <item
        android:id="@+id/rotate"
        android:icon="@drawable/ic_rotate_right"
        android:title="@string/rotate"
        app:showAsAction="ifRoom"/>
    <item
        android:id="@+id/resize"
        android:icon="@drawable/ic_minimize"
        android:title="@string/resize"
        app:showAsAction="ifRoom"/>
    <item
        android:id="@+id/flip"
        android:icon="@drawable/ic_flip"
        android:title="@string/flip"
        app:showAsAction="ifRoom">
        <menu>
            <item
                android:id="@+id/flip_horizontally"
                android:title="@string/flip_horizontally"/>
            <item
                android:id="@+id/flip_vertically"
                android:title="@string/flip_vertically"/>
        </menu>
    </item>
</menu>