1 /* 2 * 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.car.cluster; 18 19 import static android.car.cluster.ClusterHomeManager.CONFIG_DISPLAY_BOUNDS; 20 import static android.car.cluster.ClusterHomeManager.CONFIG_DISPLAY_ID; 21 22 import android.car.Car; 23 import android.car.cluster.ClusterHomeManager; 24 import android.car.cluster.ClusterState; 25 import android.graphics.Rect; 26 import android.util.Slog; 27 import android.view.Display; 28 import android.view.SurfaceControl; 29 import android.window.DisplayAreaInfo; 30 import android.window.WindowContainerToken; 31 import android.window.WindowContainerTransaction; 32 33 import com.android.systemui.CoreStartable; 34 import com.android.systemui.car.CarServiceProvider; 35 import com.android.systemui.dagger.SysUISingleton; 36 import com.android.systemui.dagger.qualifiers.Main; 37 import com.android.wm.shell.RootTaskDisplayAreaOrganizer; 38 39 import java.util.Optional; 40 import java.util.concurrent.Executor; 41 42 import javax.inject.Inject; 43 44 /*** 45 * Controls the RootTDA of cluster display per CLUSTER_DISPLAY_STATE message. 46 */ 47 @SysUISingleton 48 public class ClusterDisplayController implements CoreStartable { 49 private static final String TAG = ClusterDisplayController.class.getSimpleName(); 50 private static final boolean DBG = false; 51 52 private final RootTaskDisplayAreaOrganizer mRootTDAOrganizer; 53 private final CarServiceProvider mCarServiceProvider; 54 private final Executor mMainExecutor; 55 56 private ClusterHomeManager mClusterHomeManager; 57 private WindowContainerToken mRootTDAToken; 58 private ClusterState mClusterState; 59 60 @Inject ClusterDisplayController( Optional<RootTaskDisplayAreaOrganizer> rootTDAOrganizer, CarServiceProvider carServiceProvider, @Main Executor mainExecutor)61 public ClusterDisplayController( 62 Optional<RootTaskDisplayAreaOrganizer> rootTDAOrganizer, 63 CarServiceProvider carServiceProvider, @Main Executor mainExecutor) { 64 mRootTDAOrganizer = rootTDAOrganizer.orElse(null); 65 mCarServiceProvider = carServiceProvider; 66 mMainExecutor = mainExecutor; 67 } 68 69 @Override start()70 public void start() { 71 if (mRootTDAOrganizer == null) { 72 Slog.w(TAG, "ClusterDisplayController is disabled because of no " 73 + "RootTaskDisplayAreaOrganizer"); 74 return; 75 } 76 mCarServiceProvider.addListener(mCarServiceOnConnectedListener); 77 } 78 79 private final CarServiceProvider.CarServiceOnConnectedListener mCarServiceOnConnectedListener = 80 new CarServiceProvider.CarServiceOnConnectedListener() { 81 @Override 82 public void onConnected(Car car) { 83 mClusterHomeManager = (ClusterHomeManager) car.getCarManager(Car.CLUSTER_HOME_SERVICE); 84 if (mClusterHomeManager == null) { 85 Slog.w(TAG, "ClusterHomeManager is disabled"); 86 return; 87 } 88 mClusterHomeManager.registerClusterStateListener(mMainExecutor, mClusterStateListener); 89 90 mClusterState = mClusterHomeManager.getClusterState(); 91 if (mClusterState.displayId != Display.INVALID_DISPLAY) { 92 mRootTDAOrganizer.registerListener(mClusterState.displayId, mRootTDAListener); 93 } 94 } 95 }; 96 97 private final ClusterHomeManager.ClusterStateListener mClusterStateListener = 98 new ClusterHomeManager.ClusterStateListener() { 99 @Override 100 public void onClusterStateChanged(ClusterState state, int changes) { 101 // Need to update mClusterState first, since mClusterState will be referenced during 102 // registerListener() -> onDisplayAreaAppeared() -> resizeTDA(). 103 mClusterState = state; 104 if (DBG) { 105 Slog.d(TAG, "onClusterStateChanged: changes=" + changes 106 + ", displayId=" + state.displayId); 107 } 108 if ((changes & CONFIG_DISPLAY_ID) != 0) { 109 if (state.displayId != Display.INVALID_DISPLAY) { 110 mRootTDAOrganizer.registerListener(state.displayId, mRootTDAListener); 111 } else { 112 mRootTDAOrganizer.unregisterListener(mRootTDAListener); 113 } 114 } 115 if ((changes & CONFIG_DISPLAY_BOUNDS) != 0 && mRootTDAToken != null) { 116 resizeTDA(mRootTDAToken, state.bounds, state.displayId); 117 } 118 } 119 }; 120 121 private final RootTaskDisplayAreaOrganizer.RootTaskDisplayAreaListener mRootTDAListener = 122 new RootTaskDisplayAreaOrganizer.RootTaskDisplayAreaListener() { 123 @Override 124 public void onDisplayAreaAppeared(DisplayAreaInfo displayAreaInfo) { 125 if (DBG) Slog.d(TAG, "onDisplayAreaAppeared: " + displayAreaInfo); 126 if (mClusterState != null && mClusterState.displayId != Display.INVALID_DISPLAY) { 127 resizeTDA(displayAreaInfo.token, mClusterState.bounds, mClusterState.displayId); 128 } 129 mRootTDAToken = displayAreaInfo.token; 130 } 131 132 @Override 133 public void onDisplayAreaVanished(DisplayAreaInfo displayAreaInfo) { 134 if (DBG) Slog.d(TAG, "onDisplayAreaVanished: " + displayAreaInfo); 135 mRootTDAToken = null; 136 } 137 138 @Override 139 public void onDisplayAreaInfoChanged(DisplayAreaInfo displayAreaInfo) { 140 if (DBG) Slog.d(TAG, "onDisplayAreaInfoChanged: " + displayAreaInfo); 141 mRootTDAToken = displayAreaInfo.token; 142 } 143 }; 144 resizeTDA(WindowContainerToken token, Rect bounds, int displayId)145 private void resizeTDA(WindowContainerToken token, Rect bounds, int displayId) { 146 if (DBG) { 147 Slog.d(TAG, "resizeTDA: token=" + token + ", bounds=" + bounds 148 + ", displayId=" + displayId); 149 } 150 WindowContainerTransaction wct = new WindowContainerTransaction(); 151 wct.setBounds(token, bounds); 152 wct.setAppBounds(token, bounds); 153 mRootTDAOrganizer.applyTransaction(wct); 154 155 SurfaceControl.Transaction tx = new SurfaceControl.Transaction(); 156 mRootTDAOrganizer.setPosition(tx, displayId, bounds.left, bounds.top); 157 tx.apply(); 158 } 159 } 160