1 /* 2 * Copyright (C) 2019 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.settings.homepage.contextualcards.conditional; 18 19 import android.Manifest; 20 import android.app.settings.SettingsEnums; 21 import android.content.BroadcastReceiver; 22 import android.content.Context; 23 import android.content.Intent; 24 import android.content.IntentFilter; 25 import android.hardware.display.ColorDisplayManager; 26 import android.os.UserHandle; 27 import android.util.Log; 28 29 import com.android.settings.R; 30 import com.android.settings.homepage.contextualcards.ContextualCard; 31 32 import java.net.URISyntaxException; 33 import java.util.Objects; 34 35 public class GrayscaleConditionController implements ConditionalCardController { 36 static final int ID = Objects.hash("GrayscaleConditionController"); 37 38 private static final String TAG = "GrayscaleCondition"; 39 private static final String ACTION_GRAYSCALE_CHANGED = 40 "android.settings.action.GRAYSCALE_CHANGED"; 41 private static final IntentFilter GRAYSCALE_CHANGED_FILTER = new IntentFilter( 42 ACTION_GRAYSCALE_CHANGED); 43 44 private final Context mAppContext; 45 private final ConditionManager mConditionManager; 46 private final ColorDisplayManager mColorDisplayManager; 47 private final Receiver mReceiver; 48 49 private Intent mIntent; 50 GrayscaleConditionController(Context appContext, ConditionManager conditionManager)51 public GrayscaleConditionController(Context appContext, ConditionManager conditionManager) { 52 mAppContext = appContext; 53 mConditionManager = conditionManager; 54 mColorDisplayManager = mAppContext.getSystemService(ColorDisplayManager.class); 55 mReceiver = new Receiver(); 56 } 57 58 @Override getId()59 public long getId() { 60 return ID; 61 } 62 63 @Override isDisplayable()64 public boolean isDisplayable() { 65 try { 66 mIntent = Intent.parseUri( 67 mAppContext.getString(R.string.config_grayscale_settings_intent), 68 Intent.URI_INTENT_SCHEME); 69 } catch (URISyntaxException e) { 70 Log.w(TAG, "Failure parsing grayscale settings intent, skipping", e); 71 return false; 72 } 73 return mColorDisplayManager.isSaturationActivated(); 74 } 75 76 @Override onPrimaryClick(Context context)77 public void onPrimaryClick(Context context) { 78 mAppContext.startActivity(mIntent); 79 } 80 81 @Override onActionClick()82 public void onActionClick() { 83 // Turn off grayscale 84 mColorDisplayManager.setSaturationLevel(100 /* staturationLevel */); 85 sendBroadcast(); 86 mConditionManager.onConditionChanged(); 87 } 88 89 @Override buildContextualCard()90 public ContextualCard buildContextualCard() { 91 return new ConditionalContextualCard.Builder() 92 .setConditionId(ID) 93 .setMetricsConstant(SettingsEnums.SETTINGS_CONDITION_GRAYSCALE_MODE) 94 .setActionText(mAppContext.getText(R.string.condition_turn_off)) 95 .setName(mAppContext.getPackageName() + "/" + mAppContext.getText( 96 R.string.condition_grayscale_title)) 97 .setTitleText(mAppContext.getText(R.string.condition_grayscale_title).toString()) 98 .setSummaryText( 99 mAppContext.getText(R.string.condition_grayscale_summary).toString()) 100 .setIconDrawable(mAppContext.getDrawable(R.drawable.ic_gray_scale_24dp)) 101 .setViewType(ConditionContextualCardRenderer.VIEW_TYPE_HALF_WIDTH) 102 .build(); 103 } 104 105 @Override startMonitoringStateChange()106 public void startMonitoringStateChange() { 107 mAppContext.registerReceiver(mReceiver, GRAYSCALE_CHANGED_FILTER, 108 Manifest.permission.CONTROL_DISPLAY_COLOR_TRANSFORMS, null /* scheduler */); 109 } 110 111 @Override stopMonitoringStateChange()112 public void stopMonitoringStateChange() { 113 mAppContext.unregisterReceiver(mReceiver); 114 } 115 sendBroadcast()116 private void sendBroadcast() { 117 final Intent intent = new Intent(ACTION_GRAYSCALE_CHANGED); 118 intent.addFlags(Intent.FLAG_RECEIVER_INCLUDE_BACKGROUND); 119 mAppContext.sendBroadcastAsUser(intent, UserHandle.CURRENT, 120 Manifest.permission.CONTROL_DISPLAY_COLOR_TRANSFORMS); 121 } 122 123 public class Receiver extends BroadcastReceiver { 124 @Override onReceive(Context context, Intent intent)125 public void onReceive(Context context, Intent intent) { 126 if (ACTION_GRAYSCALE_CHANGED.equals(intent.getAction())) { 127 mConditionManager.onConditionChanged(); 128 } 129 } 130 } 131 } 132