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.CoreStartable
26 import com.android.systemui.Dumpable
27 import com.android.systemui.dagger.SysUISingleton
28 import com.android.systemui.dagger.qualifiers.Background
29 import com.android.systemui.dagger.qualifiers.Main
30 import java.io.PrintWriter
31 import java.util.concurrent.Executor
32 import javax.inject.Inject
33 
34 /** Responsible for providing information about the background of letterboxed apps. */
35 @SysUISingleton
36 class LetterboxBackgroundProvider
37 @Inject
38 constructor(
39     private val windowManager: IWindowManager,
40     @Background private val backgroundExecutor: Executor,
41     private val wallpaperManager: WallpaperManager,
42     @Main private val mainHandler: Handler,
43 ) : CoreStartable, Dumpable {
44     @ColorInt
45     var letterboxBackgroundColor: Int = Color.BLACK
46         private set
47 
48     var isLetterboxBackgroundMultiColored: Boolean = false
49         private set
50 
51     private val wallpaperColorsListener =
52         WallpaperManager.OnColorsChangedListener { _, _ ->
53             fetchBackgroundColorInfo()
54         }
55 
56     override fun start() {
57         fetchBackgroundColorInfo()
58         wallpaperManager.addOnColorsChangedListener(wallpaperColorsListener, mainHandler)
59     }
60 
61     private fun fetchBackgroundColorInfo() {
62         // Using a background executor, as binder calls to IWindowManager are blocking
63         backgroundExecutor.execute {
64             try {
65                 isLetterboxBackgroundMultiColored = windowManager.isLetterboxBackgroundMultiColored
66                 letterboxBackgroundColor = windowManager.letterboxBackgroundColorInArgb
67             } catch (e: RemoteException) {
68                 e.rethrowFromSystemServer()
69             }
70         }
71     }
72 
73     override fun dump(pw: PrintWriter, args: Array<out String>) {
74         pw.println(
75             """
76            letterboxBackgroundColor: ${Color.valueOf(letterboxBackgroundColor)}
77            isLetterboxBackgroundMultiColored: $isLetterboxBackgroundMultiColored
78        """.trimIndent())
79     }
80 }
81