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      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 package com.android.car.settings.display;
     17 
     18 import static android.provider.Settings.System.SCREEN_BRIGHTNESS_MODE;
     19 import static android.provider.Settings.System.SCREEN_BRIGHTNESS_MODE_AUTOMATIC;
     20 import static android.provider.Settings.System.SCREEN_BRIGHTNESS_MODE_MANUAL;
     21 
     22 import android.content.Context;
     23 import android.os.Bundle;
     24 import android.provider.Settings;
     25 
     26 import androidx.car.widget.ListItem;
     27 import androidx.car.widget.ListItemProvider;
     28 import androidx.car.widget.ListItemProvider.ListProvider;
     29 import androidx.car.widget.TextListItem;
     30 
     31 import com.android.car.settings.R;
     32 import com.android.car.settings.common.ListItemSettingsFragment;
     33 
     34 import java.util.ArrayList;
     35 import java.util.List;
     36 
     37 /**
     38  * Activity to host Display related preferences.
     39  */
     40 public class DisplaySettingsFragment extends ListItemSettingsFragment {
     41 
     42     /**
     43      * Gets a new instance of this class.
     44      */
     45     public static DisplaySettingsFragment newInstance() {
     46         DisplaySettingsFragment displaySettingsFragment = new DisplaySettingsFragment();
     47         Bundle bundle = ListItemSettingsFragment.getBundle();
     48         bundle.putInt(EXTRA_TITLE_ID, R.string.display_settings);
     49         bundle.putInt(EXTRA_ACTION_BAR_LAYOUT, R.layout.action_bar);
     50         displaySettingsFragment.setArguments(bundle);
     51         return displaySettingsFragment;
     52     }
     53 
     54     @Override
     55     public ListItemProvider getItemProvider() {
     56         return new ListProvider(getLineItems());
     57     }
     58 
     59     private List<ListItem> getLineItems() {
     60         List<ListItem> lineItems = new ArrayList<>();
     61         Context context = getContext();
     62         if (supportsAdaptiveBrightness()) {
     63             TextListItem adaptiveBrightnessItem = new TextListItem(context);
     64             adaptiveBrightnessItem.setTitle(context.getString(R.string.auto_brightness_title));
     65             adaptiveBrightnessItem.setBody(
     66                     context.getString(R.string.auto_brightness_summary));
     67             adaptiveBrightnessItem.setSwitch(
     68                     isAdaptiveBrightnessChecked(),
     69                     /* showDivider= */false,
     70                     (button, isChecked) ->
     71                             Settings.System.putInt(context.getContentResolver(),
     72                                     SCREEN_BRIGHTNESS_MODE,
     73                                     isChecked ? SCREEN_BRIGHTNESS_MODE_AUTOMATIC
     74                                             : SCREEN_BRIGHTNESS_MODE_MANUAL));
     75             lineItems.add(adaptiveBrightnessItem);
     76         }
     77         lineItems.add(new BrightnessLineItem(context));
     78         return lineItems;
     79     }
     80 
     81     private boolean isAdaptiveBrightnessChecked() {
     82         int brightnessMode = Settings.System.getInt(getContext().getContentResolver(),
     83                 SCREEN_BRIGHTNESS_MODE, SCREEN_BRIGHTNESS_MODE_MANUAL);
     84         return brightnessMode != SCREEN_BRIGHTNESS_MODE_MANUAL;
     85     }
     86 
     87     private boolean supportsAdaptiveBrightness() {
     88         return getContext().getResources().getBoolean(
     89                 com.android.internal.R.bool.config_automatic_brightness_available);
     90     }
     91 }
     92