1 /* <lambda>null2 * Copyright (C) 2024 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.wm.shell.desktopmode 18 19 import android.animation.Animator 20 import android.app.WindowConfiguration.WINDOWING_MODE_FREEFORM 21 import android.os.Handler 22 import android.os.IBinder 23 import android.view.SurfaceControl.Transaction 24 import android.view.WindowManager.TRANSIT_TO_BACK 25 import android.window.TransitionInfo 26 import android.window.TransitionRequestInfo 27 import android.window.WindowContainerTransaction 28 import com.android.internal.jank.InteractionJankMonitor 29 import com.android.internal.protolog.ProtoLog 30 import com.android.wm.shell.common.DisplayController 31 import com.android.wm.shell.common.ShellExecutor 32 import com.android.wm.shell.protolog.ShellProtoLogGroup.WM_SHELL_DESKTOP_MODE 33 import com.android.wm.shell.shared.TransitionUtil 34 import com.android.wm.shell.shared.animation.MinimizeAnimator.create 35 import com.android.wm.shell.transition.Transitions 36 37 /** 38 * The [Transitions.TransitionHandler] that handles transitions for tasks that are: 39 * - Closing or going to back as part of back navigation 40 * - Going to back as part of minimization button usage. 41 * 42 * Note that this handler is used only for animating transitions. 43 */ 44 class DesktopMinimizationTransitionHandler( 45 private val mainExecutor: ShellExecutor, 46 private val animExecutor: ShellExecutor, 47 private val displayController: DisplayController, 48 private val animHandler: Handler, 49 ) : Transitions.TransitionHandler { 50 51 /** Shouldn't handle anything */ 52 override fun handleRequest( 53 transition: IBinder, 54 request: TransitionRequestInfo, 55 ): WindowContainerTransaction? = null 56 57 /** Animates a transition with minimizing tasks */ 58 override fun startAnimation( 59 transition: IBinder, 60 info: TransitionInfo, 61 startTransaction: Transaction, 62 finishTransaction: Transaction, 63 finishCallback: Transitions.TransitionFinishCallback, 64 ): Boolean { 65 val shouldAnimate = 66 TransitionUtil.isClosingType(info.type) || info.type == Transitions.TRANSIT_MINIMIZE 67 if (!shouldAnimate) return false 68 69 val animations = mutableListOf<Animator>() 70 val onAnimFinish: (Animator) -> Unit = { animator -> 71 mainExecutor.execute { 72 // Animation completed 73 animations.remove(animator) 74 if (animations.isEmpty()) { 75 // All animations completed, finish the transition 76 finishCallback.onTransitionFinished(/* wct= */ null) 77 } 78 } 79 } 80 81 val checkChangeMode = { change: TransitionInfo.Change -> 82 change.mode == info.type || 83 (info.type == Transitions.TRANSIT_MINIMIZE && change.mode == TRANSIT_TO_BACK) 84 } 85 animations += 86 info.changes 87 .filter { 88 checkChangeMode(it) && it.taskInfo?.windowingMode == WINDOWING_MODE_FREEFORM 89 } 90 .mapNotNull { createMinimizeAnimation(it, finishTransaction, onAnimFinish) } 91 if (animations.isEmpty()) return false 92 animExecutor.execute { animations.forEach(Animator::start) } 93 return true 94 } 95 96 private fun createMinimizeAnimation( 97 change: TransitionInfo.Change, 98 finishTransaction: Transaction, 99 onAnimFinish: (Animator) -> Unit, 100 ): Animator? { 101 val t = Transaction() 102 val sc = change.leash 103 finishTransaction.hide(sc) 104 val displayContext = 105 change.taskInfo?.let { displayController.getDisplayContext(it.displayId) } 106 if (displayContext == null) { 107 logW( 108 "displayContext is null for taskId=${change.taskInfo?.taskId}, " + 109 "displayId=${change.taskInfo?.displayId}" 110 ) 111 return null 112 } 113 return create( 114 displayContext, 115 change, 116 t, 117 onAnimFinish, 118 InteractionJankMonitor.getInstance(), 119 animHandler, 120 ) 121 } 122 123 private companion object { 124 private fun logW(msg: String, vararg arguments: Any?) { 125 ProtoLog.w(WM_SHELL_DESKTOP_MODE, "%s: $msg", TAG, *arguments) 126 } 127 128 const val TAG = "DesktopMinimizationTransitionHandler" 129 } 130 } 131