1 /*
2  * Copyright (C) 2017 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License
15  */
16 
17 package com.android.car.settings.display;
18 
19 import static android.provider.Settings.System.SCREEN_BRIGHTNESS;
20 
21 import android.content.Context;
22 import android.provider.Settings;
23 import android.util.Log;
24 
25 import com.android.car.settings.R;
26 import com.android.car.settings.common.SeekbarLineItem;
27 
28 /**
29  * A LineItem that displays and sets display brightness.
30  */
31 class BrightnessLineItem extends SeekbarLineItem {
32     private static final String TAG = "BrightnessLineItem";
33     private static final int MAX_BRIGHTNESS = 255;
34 
35     private final Context mContext;
36 
BrightnessLineItem(Context context)37     public BrightnessLineItem(Context context) {
38         super(context.getText(R.string.brightness));
39         mContext = context;
40     }
41 
42     @Override
getInitialSeekbarValue()43     public int getInitialSeekbarValue() {
44         int currentBrightness = 0;
45         try {
46             currentBrightness = Settings.System.getInt(mContext.getContentResolver(),
47                     SCREEN_BRIGHTNESS);
48         } catch (Settings.SettingNotFoundException e) {
49             Log.w(TAG, "Can't find setting for SCREEN_BRIGHTNESS.");
50         }
51         return currentBrightness;
52     }
53 
54     @Override
getMaxSeekbarValue()55     public int getMaxSeekbarValue() {
56         return MAX_BRIGHTNESS;
57     }
58 
59     @Override
onSeekbarChanged(int progress)60     public void onSeekbarChanged(int progress) {
61         Settings.System.putInt(mContext.getContentResolver(), SCREEN_BRIGHTNESS, progress);
62     }
63 }
64