car-apps-common/res/drawable-port/background_image_scrim.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
  ~ Copyright 2019 The Android Open Source Project
  ~
  ~ Licensed under the Apache License, Version 2.0 (the "License");
  ~ you may not use this file except in compliance with the License.
  ~ You may obtain a copy of the License at
  ~
  ~      http://www.apache.org/licenses/LICENSE-2.0
  ~
  ~ Unless required by applicable law or agreed to in writing, software
  ~ distributed under the License is distributed on an "AS IS" BASIS,
  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  ~ See the License for the specific language governing permissions and
  ~ limitations under the License.
  -->

<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item>
        <shape>
            <gradient
                android:angle="90"
                android:centerY="0.3"
                android:startColor="@android:color/black"
                android:centerColor="@android:color/black"
                android:endColor="@android:color/transparent"/>
        </shape>
    </item>
    <item>
        <shape>
            <gradient
                android:angle="90"
                android:centerY="0.48"
                android:startColor="#80000000"
                android:centerColor="#80000000"
                android:endColor="@android:color/transparent"/>
        </shape>
    </item>
    <item>
        <shape>
            <gradient
                android:angle="270"
                android:centerY="0.64"
                android:startColor="#CC000000"
                android:centerColor="@android:color/transparent"/>
        </shape>
    </item>
</layer-list>