LibreTube/app/src/main/res/layout/player_gesture_controls_view.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <LinearLayout
        android:id="@+id/volumeControlView"
        android:layout_width="42dp"
        android:layout_height="wrap_content"
        android:layout_marginLeft="36dp"
        android:background="@drawable/controls_layout_bg"
        android:gravity="center"
        android:orientation="vertical"
        android:visibility="gone"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        tools:ignore="RtlHardcoded">

        <TextView
            android:id="@+id/volume_textView"
            style="@style/SwipeControlString"
            app:autoSizeTextType="uniform" />

        <ProgressBar
            android:id="@+id/volume_progressBar"
            style="@android:style/Widget.ProgressBar.Horizontal"
            android:layout_width="7dp"
            android:layout_height="100dp"
            android:layout_marginVertical="4dp"
            android:progressDrawable="@drawable/vertical_progressbar" />

        <ImageView
            android:id="@+id/volume_imageView"
            android:layout_width="24dp"
            android:layout_height="24dp"
            android:contentDescription="@string/volume"
            android:src="@drawable/ic_volume_up" />

    </LinearLayout>

    <LinearLayout
        android:id="@+id/brightnessControlView"
        android:layout_width="42dp"
        android:layout_height="wrap_content"
        android:layout_marginRight="36dp"
        android:background="@drawable/controls_layout_bg"
        android:gravity="center"
        android:orientation="vertical"
        android:visibility="gone"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        tools:ignore="RtlHardcoded">

        <TextView
            android:id="@+id/brightness_textView"
            style="@style/SwipeControlString"
            app:autoSizeTextType="uniform" />

        <ProgressBar
            android:id="@+id/brightness_progressBar"
            style="@android:style/Widget.ProgressBar.Horizontal"
            android:layout_width="7dp"
            android:layout_height="100dp"
            android:layout_marginVertical="4dp"
            android:progressDrawable="@drawable/vertical_progressbar" />

        <ImageView
            android:id="@+id/brightness_imageView"
            android:layout_width="24dp"
            android:layout_height="24dp"
            android:contentDescription="@string/brightness"
            android:src="@drawable/ic_brightness" />
    </LinearLayout>

</androidx.constraintlayout.widget.ConstraintLayout>