| /* |
| * Copyright (C) 2022 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.wm.shell.activityembedding; |
| |
| import static android.window.TransitionInfo.FLAG_FILLS_TASK; |
| import static android.window.TransitionInfo.FLAG_IN_TASK_WITH_EMBEDDED_ACTIVITY; |
| |
| import static java.util.Objects.requireNonNull; |
| |
| import android.content.Context; |
| import android.os.IBinder; |
| import android.util.ArrayMap; |
| import android.view.SurfaceControl; |
| import android.window.TransitionInfo; |
| import android.window.TransitionRequestInfo; |
| import android.window.WindowContainerTransaction; |
| |
| import androidx.annotation.NonNull; |
| import androidx.annotation.Nullable; |
| |
| import com.android.internal.annotations.VisibleForTesting; |
| import com.android.wm.shell.sysui.ShellInit; |
| import com.android.wm.shell.transition.Transitions; |
| |
| /** |
| * Responsible for handling ActivityEmbedding related transitions. |
| */ |
| public class ActivityEmbeddingController implements Transitions.TransitionHandler { |
| |
| private final Context mContext; |
| @VisibleForTesting |
| final Transitions mTransitions; |
| @VisibleForTesting |
| final ActivityEmbeddingAnimationRunner mAnimationRunner; |
| |
| /** |
| * Keeps track of the currently-running transition callback associated with each transition |
| * token. |
| */ |
| private final ArrayMap<IBinder, Transitions.TransitionFinishCallback> mTransitionCallbacks = |
| new ArrayMap<>(); |
| |
| private ActivityEmbeddingController(@NonNull Context context, @NonNull ShellInit shellInit, |
| @NonNull Transitions transitions) { |
| mContext = requireNonNull(context); |
| mTransitions = requireNonNull(transitions); |
| mAnimationRunner = new ActivityEmbeddingAnimationRunner(context, this); |
| |
| shellInit.addInitCallback(this::onInit, this); |
| } |
| |
| /** |
| * Creates {@link ActivityEmbeddingController}, returns {@code null} if the feature is not |
| * supported. |
| */ |
| @Nullable |
| public static ActivityEmbeddingController create(@NonNull Context context, |
| @NonNull ShellInit shellInit, @NonNull Transitions transitions) { |
| return Transitions.ENABLE_SHELL_TRANSITIONS |
| ? new ActivityEmbeddingController(context, shellInit, transitions) |
| : null; |
| } |
| |
| /** Registers to handle transitions. */ |
| public void onInit() { |
| mTransitions.addHandler(this); |
| } |
| |
| @Override |
| public boolean startAnimation(@NonNull IBinder transition, @NonNull TransitionInfo info, |
| @NonNull SurfaceControl.Transaction startTransaction, |
| @NonNull SurfaceControl.Transaction finishTransaction, |
| @NonNull Transitions.TransitionFinishCallback finishCallback) { |
| boolean containsEmbeddingSplit = false; |
| for (TransitionInfo.Change change : info.getChanges()) { |
| if (!change.hasFlags(FLAG_IN_TASK_WITH_EMBEDDED_ACTIVITY)) { |
| // Only animate the transition if all changes are in a Task with ActivityEmbedding. |
| return false; |
| } |
| if (!containsEmbeddingSplit && !change.hasFlags(FLAG_FILLS_TASK)) { |
| // Whether the Task contains any ActivityEmbedding split before or after the |
| // transition. |
| containsEmbeddingSplit = true; |
| } |
| } |
| if (!containsEmbeddingSplit) { |
| // Let the system to play the default animation if there is no ActivityEmbedding split |
| // window. This allows to play the app customized animation when there is no embedding, |
| // such as the device is in a folded state. |
| return false; |
| } |
| |
| // Start ActivityEmbedding animation. |
| mTransitionCallbacks.put(transition, finishCallback); |
| mAnimationRunner.startAnimation(transition, info, startTransaction, finishTransaction); |
| return true; |
| } |
| |
| @Nullable |
| @Override |
| public WindowContainerTransaction handleRequest(@NonNull IBinder transition, |
| @NonNull TransitionRequestInfo request) { |
| return null; |
| } |
| |
| @Override |
| public void setAnimScaleSetting(float scale) { |
| mAnimationRunner.setAnimScaleSetting(scale); |
| } |
| |
| /** Called when the animation is finished. */ |
| void onAnimationFinished(@NonNull IBinder transition) { |
| final Transitions.TransitionFinishCallback callback = |
| mTransitionCallbacks.remove(transition); |
| if (callback == null) { |
| throw new IllegalStateException("No finish callback found"); |
| } |
| callback.onTransitionFinished(null /* wct */, null /* wctCB */); |
| } |
| } |