1 /* 2 * Copyright (C) 2018 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 package com.android.car.settings.quicksettings; 17 18 import static android.provider.Settings.System.SCREEN_BRIGHTNESS; 19 20 import android.content.Context; 21 import android.provider.Settings; 22 import android.widget.SeekBar; 23 24 import com.android.car.settings.common.Logger; 25 26 /** 27 * A slider to adjust the brightness of the screen 28 */ 29 public class BrightnessTile implements QuickSettingGridAdapter.SeekbarTile { 30 private static final Logger LOG = new Logger(BrightnessTile.class); 31 private static final int MAX_BRIGHTNESS = 255; 32 private final Context mContext; 33 BrightnessTile(Context context)34 public BrightnessTile(Context context) { 35 mContext = context; 36 } 37 38 @Override onStartTrackingTouch(SeekBar seekBar)39 public void onStartTrackingTouch(SeekBar seekBar) { 40 // don't care 41 } 42 43 @Override onStopTrackingTouch(SeekBar seekBar)44 public void onStopTrackingTouch(SeekBar seekBar) { 45 // don't care 46 } 47 48 @Override onProgressChanged(SeekBar seekBar, int progress, boolean fromUser)49 public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) { 50 Settings.System.putInt(mContext.getContentResolver(), SCREEN_BRIGHTNESS, progress); 51 } 52 53 @Override getMax()54 public int getMax() { 55 return MAX_BRIGHTNESS; 56 } 57 58 @Override stop()59 public void stop() { 60 // nothing to do. 61 } 62 63 @Override getCurrent()64 public int getCurrent() { 65 int currentBrightness = 0; 66 try { 67 currentBrightness = Settings.System.getInt(mContext.getContentResolver(), 68 SCREEN_BRIGHTNESS); 69 } catch (Settings.SettingNotFoundException e) { 70 LOG.w("Can't find setting for SCREEN_BRIGHTNESS."); 71 } 72 return currentBrightness; 73 } 74 } 75