1 /* <lambda>null2 * Copyright (C) 2021 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.shared.system.smartspace 18 19 import android.graphics.Rect 20 import android.view.View 21 import com.android.systemui.shared.system.ActivityManagerWrapper 22 import com.android.systemui.shared.system.QuickStepContract 23 import kotlin.math.min 24 25 /** 26 * Controller that keeps track of SmartSpace instances in remote processes (such as Launcher), 27 * allowing System UI to query or update their state during shared-element transitions. 28 */ 29 class SmartspaceTransitionController { 30 31 /** 32 * Implementation of [ISmartspaceTransitionController] that we provide to Launcher, allowing it 33 * to provide us with a callback to query and update the state of its Smartspace. 34 */ 35 private val ISmartspaceTransitionController = object : ISmartspaceTransitionController.Stub() { 36 override fun setSmartspace(callback: ISmartspaceCallback?) { 37 this@SmartspaceTransitionController.launcherSmartspace = callback 38 updateLauncherSmartSpaceState() 39 } 40 } 41 42 /** 43 * Callback provided by Launcher to allow us to query and update the state of its SmartSpace. 44 */ 45 public var launcherSmartspace: ISmartspaceCallback? = null 46 47 public var lockscreenSmartspace: View? = null 48 49 /** 50 * Cached state of the Launcher SmartSpace. Retrieving the state is an IPC, so we should avoid 51 * unnecessary 52 */ 53 public var mLauncherSmartspaceState: SmartspaceState? = null 54 55 /** 56 * The bounds of our SmartSpace when the shared element transition began. We'll interpolate 57 * between this and [smartspaceDestinationBounds] as the dismiss amount changes. 58 */ 59 private val smartspaceOriginBounds = Rect() 60 61 /** The bounds of the Launcher's SmartSpace, which is where we are animating our SmartSpace. */ 62 63 private val smartspaceDestinationBounds = Rect() 64 65 fun createExternalInterface(): ISmartspaceTransitionController { 66 return ISmartspaceTransitionController 67 } 68 69 /** 70 * Updates [mLauncherSmartspaceState] and returns it. This will trigger a binder call, so use the 71 * cached [mLauncherSmartspaceState] if possible. 72 */ 73 fun updateLauncherSmartSpaceState(): SmartspaceState? { 74 return launcherSmartspace?.smartspaceState.also { 75 mLauncherSmartspaceState = it 76 } 77 } 78 79 fun prepareForUnlockTransition() { 80 updateLauncherSmartSpaceState().also { state -> 81 if (state?.boundsOnScreen != null && lockscreenSmartspace != null) { 82 lockscreenSmartspace!!.getBoundsOnScreen(smartspaceOriginBounds) 83 with(smartspaceDestinationBounds) { 84 set(state.boundsOnScreen) 85 offset(-lockscreenSmartspace!!.paddingLeft, 86 -lockscreenSmartspace!!.paddingTop) 87 } 88 } 89 } 90 } 91 92 fun setProgressToDestinationBounds(progress: Float) { 93 if (!isSmartspaceTransitionPossible()) { 94 return 95 } 96 97 val progressClamped = min(1f, progress) 98 99 // Calculate the distance (relative to the origin) that we need to be for the current 100 // progress value. 101 val progressX = 102 (smartspaceDestinationBounds.left - smartspaceOriginBounds.left) * progressClamped 103 val progressY = 104 (smartspaceDestinationBounds.top - smartspaceOriginBounds.top) * progressClamped 105 106 val lockscreenSmartspaceCurrentBounds = Rect().also { 107 lockscreenSmartspace!!.getBoundsOnScreen(it) 108 } 109 110 // Figure out how far that is from our present location on the screen. This approach 111 // compensates for the fact that our parent container is also translating to animate out. 112 val dx = smartspaceOriginBounds.left + progressX - 113 lockscreenSmartspaceCurrentBounds.left 114 var dy = smartspaceOriginBounds.top + progressY - 115 lockscreenSmartspaceCurrentBounds.top 116 117 with(lockscreenSmartspace!!) { 118 translationX = translationX + dx 119 translationY = translationY + dy 120 } 121 } 122 123 /** 124 * Whether we're capable of performing the Smartspace shared element transition when we unlock. 125 * This is true if: 126 * 127 * - The Launcher registered a Smartspace with us, it's reporting non-empty bounds on screen. 128 * - Launcher is behind the keyguard, and the Smartspace is visible on the currently selected 129 * page. 130 */ 131 public fun isSmartspaceTransitionPossible(): Boolean { 132 val smartSpaceNullOrBoundsEmpty = mLauncherSmartspaceState?.boundsOnScreen?.isEmpty ?: true 133 return isLauncherUnderneath() && !smartSpaceNullOrBoundsEmpty 134 } 135 136 companion object { 137 fun isLauncherUnderneath(): Boolean { 138 return ActivityManagerWrapper.getInstance() 139 .runningTask?.topActivity?.className?.equals( 140 QuickStepContract.LAUNCHER_ACTIVITY_CLASS_NAME) ?: false 141 } 142 } 143 }