Auxio/app/src/main/res/layout/fragment_playback.xml

<?xml version="1.0" encoding="utf-8"?>
<layout 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"
    tools:context=".playback.PlaybackFragment">

    <data>

        <variable
            name="song"
            type="org.oxycblt.auxio.music.Song" />

        <variable
            name="playbackModel"
            type="org.oxycblt.auxio.playback.PlaybackViewModel" />

        <variable
            name="detailModel"
            type="org.oxycblt.auxio.detail.DetailViewModel" />
    </data>

    <androidx.constraintlayout.widget.ConstraintLayout
        android:id="@+id/playback_layout"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:clipToPadding="false">

        <com.google.android.material.appbar.MaterialToolbar
            android:id="@+id/playback_toolbar"
            style="@style/Widget.Auxio.Toolbar.Icon.Down"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent"
            app:title="@string/lbl_playback"
            app:menu="@menu/menu_playback" />

        <ImageView
            android:id="@+id/playback_cover"
            style="@style/Widget.Auxio.Image.Full"
            android:layout_margin="@dimen/spacing_mid_large"
            android:contentDescription="@{@string/desc_album_cover(song.name)}"
            app:albumArt="@{song}"
            app:layout_constraintBottom_toTopOf="@+id/playback_song"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@+id/playback_toolbar"
            tools:src="@drawable/ic_album" />

        <TextView
            android:id="@+id/playback_song"
            style="@style/Widget.Auxio.TextView.Primary"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginStart="@dimen/spacing_mid_large"
            android:layout_marginEnd="@dimen/spacing_mid_large"
            android:onClick="@{() -> detailModel.navToItem(playbackModel.song)}"
            android:text="@{song.name}"
            app:layout_constraintBottom_toTopOf="@+id/playback_artist"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintVertical_chainStyle="packed"
            tools:text="Song Name" />

        <TextView
            android:id="@+id/playback_artist"
            style="@style/Widget.Auxio.TextView.Secondary"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginStart="@dimen/spacing_mid_large"
            android:layout_marginEnd="@dimen/spacing_mid_large"
            android:onClick="@{() -> detailModel.navToItem(playbackModel.song.album.artist)}"
            android:text="@{song.album.artist.resolvedName}"
            app:layout_constraintBottom_toTopOf="@+id/playback_album"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            tools:text="Artist Name" />

        <TextView
            android:id="@+id/playback_album"
            style="@style/Widget.Auxio.TextView.Secondary"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginStart="@dimen/spacing_mid_large"
            android:layout_marginEnd="@dimen/spacing_mid_large"
            android:onClick="@{() -> detailModel.navToItem(playbackModel.song.album)}"
            android:text="@{song.album.name}"
            app:layout_constraintBottom_toTopOf="@+id/playback_seek_bar"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            tools:text="Album Name" />

        <org.oxycblt.auxio.playback.PlaybackSeekBar
            android:id="@+id/playback_seek_bar"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginStart="@dimen/spacing_small"
            android:layout_marginEnd="@dimen/spacing_small"
            app:layout_constraintBottom_toTopOf="@+id/playback_play_pause"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent" />

        <ImageButton
            android:id="@+id/playback_loop"
            style="@style/Widget.Auxio.Button.Unbounded"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginStart="@dimen/spacing_medium"
            android:contentDescription="@string/desc_change_loop"
            android:onClick="@{() -> playbackModel.incrementLoopStatus()}"
            android:src="@drawable/ic_loop"
            app:layout_constraintBottom_toBottomOf="@+id/playback_skip_prev"
            app:layout_constraintStart_toStartOf="@+id/playback_seek_bar"
            app:layout_constraintTop_toTopOf="@+id/playback_skip_prev" />

        <ImageButton
            android:id="@+id/playback_skip_prev"
            style="@style/Widget.Auxio.Button.Unbounded"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:contentDescription="@string/desc_skip_prev"
            android:onClick="@{() -> playbackModel.skipPrev()}"
            android:src="@drawable/ic_skip_prev"
            app:layout_constraintBottom_toBottomOf="@+id/playback_play_pause"
            app:layout_constraintEnd_toStartOf="@+id/playback_play_pause"
            app:layout_constraintStart_toEndOf="@+id/playback_loop"
            app:layout_constraintTop_toTopOf="@+id/playback_play_pause" />

        <com.google.android.material.floatingactionbutton.FloatingActionButton
            android:id="@+id/playback_play_pause"
            style="@style/Widget.Auxio.FloatingActionButton.PlayPause"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginBottom="@dimen/spacing_mid_large"
            android:contentDescription="@string/desc_play_pause"
            android:onClick="@{() -> playbackModel.invertPlayingStatus()}"
            android:src="@drawable/sel_playing_state"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintEnd_toEndOf="@+id/playback_seek_bar"
            app:layout_constraintStart_toStartOf="@+id/playback_seek_bar"
            tools:src="@drawable/ic_play" />

        <ImageButton
            android:id="@+id/playback_skip_next"
            style="@style/Widget.Auxio.Button.Unbounded"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:contentDescription="@string/desc_skip_next"
            android:onClick="@{() -> playbackModel.skipNext()}"
            android:src="@drawable/ic_skip_next"
            app:layout_constraintBottom_toBottomOf="@+id/playback_play_pause"
            app:layout_constraintEnd_toStartOf="@+id/playback_shuffle"
            app:layout_constraintStart_toEndOf="@+id/playback_play_pause"
            app:layout_constraintTop_toTopOf="@+id/playback_play_pause" />

        <ImageButton
            android:id="@+id/playback_shuffle"
            style="@style/Widget.Auxio.Button.Unbounded"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginEnd="@dimen/spacing_medium"
            android:contentDescription="@string/desc_shuffle"
            android:onClick="@{() -> playbackModel.invertShuffleStatus()}"
            android:src="@drawable/ic_shuffle"
            app:layout_constraintBottom_toBottomOf="@+id/playback_skip_next"
            app:layout_constraintEnd_toEndOf="@+id/playback_seek_bar"
            app:layout_constraintTop_toTopOf="@+id/playback_skip_next"
            app:tint="@color/sel_accented" />

    </androidx.constraintlayout.widget.ConstraintLayout>
</layout>