AChep/literaryclock

<?xml version="1.0" encoding="utf-8"?>
<MotionScene xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto">

    <Transition
        app:constraintSetEnd="@id/collapsed"
        app:constraintSetStart="@id/expanded"
        app:motionInterpolator="easeInOut">

        <OnSwipe
            app:dragDirection="dragUp"
            app:touchAnchorId="@id/toolbarBg"
            app:touchAnchorSide="bottom" />

        <KeyFrameSet>
            <KeyAttribute
                app:framePosition="0"
                app:motionTarget="@id/appName">
                <CustomAttribute
                    app:attributeName="alpha"
                    app:customFloatValue="1" />
            </KeyAttribute>
            <KeyAttribute
                app:framePosition="50"
                app:motionTarget="@id/appName">
                <CustomAttribute
                    app:attributeName="alpha"
                    app:customFloatValue="0" />
            </KeyAttribute>
        </KeyFrameSet>

    </Transition>

    <ConstraintSet android:id="@+id/expanded">
        <Constraint
            android:id="@id/barrier"
            android:layout_height="@dimen/app_bar_height__expanded" />
    </ConstraintSet>

    <ConstraintSet android:id="@+id/collapsed">
        <Constraint
            android:id="@id/toolbarBgTower"
            android:layout_width="56dp"
            android:translationX="8dp"
            app:layout_constraintBottom_toBottomOf="@id/toolbarBg"
            app:layout_constraintEnd_toStartOf="@id/digitalClock"
            app:layout_constraintHorizontal_chainStyle="packed"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="@id/toolbarBg" />
        <Constraint
            android:id="@id/digitalClock"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:scaleX="0.6"
            android:scaleY="0.6"
            android:translationX="-16dp"
            app:layout_constraintBottom_toBottomOf="@id/barrier"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toEndOf="@id/toolbarBgTower"
            app:layout_constraintTop_toTopOf="@id/barrier" />
        <Constraint
            android:id="@+id/analogClock"
            android:layout_width="24dp"
            android:layout_height="24dp"
            android:layout_marginTop="14dp"
            android:translationX="8dp"
            app:layout_constraintBottom_toBottomOf="@id/toolbarBgTower"
            app:layout_constraintEnd_toEndOf="@id/toolbarBgTower"
            app:layout_constraintStart_toStartOf="@id/toolbarBgTower"
            app:layout_constraintTop_toTopOf="@id/toolbarBgTower" />

        <!--
            Stop at the size of a usual
            action bar.
            -->
        <Constraint
            android:id="@id/barrier"
            android:layout_height="@dimen/app_bar_height__collapsed" />
    </ConstraintSet>

</MotionScene>