Add battery illustration

Also update the VideoPreference to handle the full screen
illustration by adding attr isFullWidth and aspectRadio.

Change-Id: If2ccba4ce792801c6fd79b7c60af4e3826c091cc
Fixes: 74409022
Test: Screenshot | RunSettingsRoboTests

tests/robotests/src/com/android/settings/widget/VideoPreferenceTest.java

@@ -0,0 +1,73 @@
+/*
+ * Copyright (C) 2018 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.
+ */
+
+package com.android.settings.widget;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.Mockito.when;
+
+import android.content.Context;
+import android.media.MediaPlayer;
+import android.support.v7.preference.PreferenceViewHolder;
+import android.view.LayoutInflater;
+
+import com.android.settings.R;
+import com.android.settings.testutils.SettingsRobolectricTestRunner;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+import org.robolectric.RuntimeEnvironment;
+
+@RunWith(SettingsRobolectricTestRunner.class)
+public class VideoPreferenceTest {
+    private static final int VIDEO_WIDTH = 100;
+    private static final int VIDEO_HEIGHT = 150;
+    @Mock
+    private MediaPlayer mMediaPlayer;
+    private Context mContext;
+    private VideoPreference mVideoPreference;
+    private PreferenceViewHolder mPreferenceViewHolder;
+
+    @Before
+    public void setUp() {
+        MockitoAnnotations.initMocks(this);
+
+        mContext = RuntimeEnvironment.application;
+        mVideoPreference = new VideoPreference(mContext, null /* attrs */);
+        mVideoPreference.mMediaPlayer = mMediaPlayer;
+        when(mMediaPlayer.getVideoWidth()).thenReturn(VIDEO_WIDTH);
+        when(mMediaPlayer.getVideoHeight()).thenReturn(VIDEO_HEIGHT);
+
+        mPreferenceViewHolder = PreferenceViewHolder.createInstanceForTests(
+                LayoutInflater.from(mContext).inflate(R.layout.video_preference, null));
+    }
+
+    @Test
+    public void onBindViewHolder_hasCorrectRatio() {
+        mVideoPreference.mAnimationAvailable = true;
+
+        mVideoPreference.updateAspectRatio();
+        mVideoPreference.onBindViewHolder(mPreferenceViewHolder);
+
+        final AspectRatioFrameLayout layout =
+                (AspectRatioFrameLayout) mPreferenceViewHolder.findViewById(R.id.video_container);
+        assertThat(layout.mAspectRatio).isWithin(0.01f).of(VIDEO_WIDTH / (float) VIDEO_HEIGHT);
+    }
+}