1 /* <lambda>null2 * Copyright (C) 2022 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.systemui.statusbar.phone 18 19 import android.annotation.ColorInt 20 import android.app.WallpaperManager 21 import android.graphics.Color 22 import android.os.Handler 23 import android.os.RemoteException 24 import android.view.IWindowManager 25 import com.android.systemui.Dumpable 26 import com.android.systemui.dagger.qualifiers.Background 27 import com.android.systemui.dagger.qualifiers.Main 28 import com.android.systemui.dump.DumpManager 29 import com.android.systemui.statusbar.phone.dagger.CentralSurfacesComponent 30 import com.android.systemui.statusbar.phone.dagger.CentralSurfacesComponent.CentralSurfacesScope 31 import java.io.PrintWriter 32 import java.util.concurrent.Executor 33 import javax.inject.Inject 34 35 /** Responsible for providing information about the background of letterboxed apps. */ 36 @CentralSurfacesScope 37 class LetterboxBackgroundProvider 38 @Inject 39 constructor( 40 private val windowManager: IWindowManager, 41 @Background private val backgroundExecutor: Executor, 42 private val dumpManager: DumpManager, 43 private val wallpaperManager: WallpaperManager, 44 @Main private val mainHandler: Handler, 45 ) : CentralSurfacesComponent.Startable, Dumpable { 46 47 @ColorInt 48 var letterboxBackgroundColor: Int = Color.BLACK 49 private set 50 51 var isLetterboxBackgroundMultiColored: Boolean = false 52 private set 53 54 private val wallpaperColorsListener = 55 WallpaperManager.OnColorsChangedListener { _, _ -> 56 fetchBackgroundColorInfo() 57 } 58 59 override fun start() { 60 dumpManager.registerDumpable(javaClass.simpleName, this) 61 fetchBackgroundColorInfo() 62 wallpaperManager.addOnColorsChangedListener(wallpaperColorsListener, mainHandler) 63 } 64 65 private fun fetchBackgroundColorInfo() { 66 // Using a background executor, as binder calls to IWindowManager are blocking 67 backgroundExecutor.execute { 68 try { 69 isLetterboxBackgroundMultiColored = windowManager.isLetterboxBackgroundMultiColored 70 letterboxBackgroundColor = windowManager.letterboxBackgroundColorInArgb 71 } catch (e: RemoteException) { 72 e.rethrowFromSystemServer() 73 } 74 } 75 } 76 77 override fun stop() { 78 dumpManager.unregisterDumpable(javaClass.simpleName) 79 wallpaperManager.removeOnColorsChangedListener(wallpaperColorsListener) 80 } 81 82 override fun dump(pw: PrintWriter, args: Array<out String>) { 83 pw.println( 84 """ 85 letterboxBackgroundColor: ${Color.valueOf(letterboxBackgroundColor)} 86 isLetterboxBackgroundMultiColored: $isLetterboxBackgroundMultiColored 87 """.trimIndent()) 88 } 89 } 90