1 /* 2 * 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.mediaprojection.appselector.view 18 19 import android.content.Context 20 import android.content.res.Configuration 21 import android.graphics.Rect 22 import android.view.WindowInsets.Type 23 import android.view.WindowManager 24 import com.android.systemui.mediaprojection.appselector.MediaProjectionAppSelectorScope 25 import com.android.systemui.mediaprojection.appselector.view.TaskPreviewSizeProvider.TaskPreviewSizeListener 26 import com.android.systemui.shared.recents.utilities.Utilities.isLargeScreen 27 import com.android.systemui.statusbar.policy.CallbackController 28 import com.android.systemui.statusbar.policy.ConfigurationController 29 import com.android.systemui.statusbar.policy.ConfigurationController.ConfigurationListener 30 import javax.inject.Inject 31 32 @MediaProjectionAppSelectorScope 33 class TaskPreviewSizeProvider 34 @Inject 35 constructor( 36 private val context: Context, 37 private val windowManager: WindowManager, 38 configurationController: ConfigurationController 39 ) : CallbackController<TaskPreviewSizeListener>, ConfigurationListener { 40 41 /** Returns the size of the task preview on the screen in pixels */ 42 val size: Rect = calculateSize() 43 44 private val listeners = arrayListOf<TaskPreviewSizeListener>() 45 46 init { 47 configurationController.addCallback(this) 48 } 49 onConfigChangednull50 override fun onConfigChanged(newConfig: Configuration) { 51 val newSize = calculateSize() 52 if (newSize != size) { 53 size.set(newSize) 54 listeners.forEach { it.onTaskSizeChanged(size) } 55 } 56 } 57 calculateSizenull58 private fun calculateSize(): Rect { 59 val windowMetrics = windowManager.maximumWindowMetrics 60 val maximumWindowHeight = windowMetrics.bounds.height() 61 val width = windowMetrics.bounds.width() 62 var height = maximumWindowHeight 63 64 val isLargeScreen = isLargeScreen(context) 65 if (isLargeScreen) { 66 val taskbarSize = 67 windowManager.currentWindowMetrics.windowInsets 68 .getInsets(Type.tappableElement()) 69 .bottom 70 height -= taskbarSize 71 } 72 73 val previewSize = Rect(0, 0, width, height) 74 val scale = (height / maximumWindowHeight.toFloat()) / SCREEN_HEIGHT_TO_TASK_HEIGHT_RATIO 75 previewSize.scale(scale) 76 77 return previewSize 78 } 79 addCallbacknull80 override fun addCallback(listener: TaskPreviewSizeListener) { 81 listeners += listener 82 } 83 removeCallbacknull84 override fun removeCallback(listener: TaskPreviewSizeListener) { 85 listeners -= listener 86 } 87 88 interface TaskPreviewSizeListener { onTaskSizeChangednull89 fun onTaskSizeChanged(size: Rect) 90 } 91 } 92 93 /** 94 * How many times smaller the task preview should be on the screen comparing to the height of the 95 * screen 96 */ 97 private const val SCREEN_HEIGHT_TO_TASK_HEIGHT_RATIO = 4f 98