| /* |
| * Copyright (C) 2018 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.server.am; |
| |
| import static android.app.ActivityManager.StackId.INVALID_STACK_ID; |
| import static android.app.WindowConfiguration.ACTIVITY_TYPE_HOME; |
| import static android.content.Intent.FLAG_ACTIVITY_NEW_TASK; |
| import static android.content.Intent.FLAG_ACTIVITY_NO_ANIMATION; |
| import static android.os.Trace.TRACE_TAG_ACTIVITY_MANAGER; |
| import static android.view.WindowManager.TRANSIT_NONE; |
| import static com.android.server.am.ActivityStackSupervisor.PRESERVE_WINDOWS; |
| |
| import android.app.ActivityOptions; |
| import android.content.ComponentName; |
| import android.content.Intent; |
| import android.os.Handler; |
| import android.os.RemoteException; |
| import android.os.Trace; |
| import android.util.Slog; |
| import android.view.IRecentsAnimationRunner; |
| import com.android.server.wm.RecentsAnimationController.RecentsAnimationCallbacks; |
| import com.android.server.wm.WindowManagerService; |
| |
| /** |
| * Manages the recents animation, including the reordering of the stacks for the transition and |
| * cleanup. See {@link com.android.server.wm.RecentsAnimationController}. |
| */ |
| class RecentsAnimation implements RecentsAnimationCallbacks { |
| private static final String TAG = RecentsAnimation.class.getSimpleName(); |
| |
| private static final int RECENTS_ANIMATION_TIMEOUT = 10 * 1000; |
| |
| private final ActivityManagerService mService; |
| private final ActivityStackSupervisor mStackSupervisor; |
| private final ActivityStartController mActivityStartController; |
| private final WindowManagerService mWindowManager; |
| private final UserController mUserController; |
| private final Handler mHandler; |
| |
| private final Runnable mCancelAnimationRunnable; |
| |
| // The stack to restore the home stack behind when the animation is finished |
| private ActivityStack mRestoreHomeBehindStack; |
| |
| RecentsAnimation(ActivityManagerService am, ActivityStackSupervisor stackSupervisor, |
| ActivityStartController activityStartController, WindowManagerService wm, |
| UserController userController) { |
| mService = am; |
| mStackSupervisor = stackSupervisor; |
| mActivityStartController = activityStartController; |
| mHandler = new Handler(mStackSupervisor.mLooper); |
| mWindowManager = wm; |
| mUserController = userController; |
| |
| mCancelAnimationRunnable = () -> { |
| // The caller has not finished the animation in a predefined amount of time, so |
| // force-cancel the animation |
| mWindowManager.cancelRecentsAnimation(); |
| }; |
| } |
| |
| void startRecentsActivity(Intent intent, IRecentsAnimationRunner recentsAnimationRunner, |
| ComponentName recentsComponent, int recentsUid) { |
| Trace.traceBegin(TRACE_TAG_ACTIVITY_MANAGER, "RecentsAnimation#startRecentsActivity"); |
| |
| if (!mWindowManager.canStartRecentsAnimation()) { |
| notifyAnimationCancelBeforeStart(recentsAnimationRunner); |
| return; |
| } |
| |
| // If the existing home activity is already on top, then cancel |
| ActivityRecord homeActivity = mStackSupervisor.getHomeActivity(); |
| final boolean hasExistingHomeActivity = homeActivity != null; |
| if (hasExistingHomeActivity) { |
| final ActivityDisplay display = homeActivity.getDisplay(); |
| mRestoreHomeBehindStack = display.getStackAboveHome(); |
| if (mRestoreHomeBehindStack == null) { |
| notifyAnimationCancelBeforeStart(recentsAnimationRunner); |
| return; |
| } |
| } |
| |
| mWindowManager.deferSurfaceLayout(); |
| try { |
| |
| final ActivityDisplay display; |
| if (hasExistingHomeActivity) { |
| // Move the home activity into place for the animation if it is not already top most |
| display = homeActivity.getDisplay(); |
| display.moveHomeStackBehindBottomMostVisibleStack(); |
| } else { |
| // No home activity |
| final ActivityOptions opts = ActivityOptions.makeBasic(); |
| opts.setLaunchActivityType(ACTIVITY_TYPE_HOME); |
| opts.setAvoidMoveToFront(); |
| intent.addFlags(FLAG_ACTIVITY_NEW_TASK | FLAG_ACTIVITY_NO_ANIMATION); |
| |
| mActivityStartController |
| .obtainStarter(intent, "startRecentsActivity_noHomeActivity") |
| .setCallingUid(recentsUid) |
| .setCallingPackage(recentsComponent.getPackageName()) |
| .setActivityOptions(SafeActivityOptions.fromBundle(opts.toBundle())) |
| .setMayWait(mUserController.getCurrentUserId()) |
| .execute(); |
| mWindowManager.prepareAppTransition(TRANSIT_NONE, false); |
| |
| homeActivity = mStackSupervisor.getHomeActivity(); |
| display = homeActivity.getDisplay(); |
| |
| // TODO: Maybe wait for app to draw in this particular case? |
| } |
| |
| // Mark the home activity as launch-behind to bump its visibility for the |
| // duration of the gesture that is driven by the recents component |
| homeActivity.mLaunchTaskBehind = true; |
| |
| // Post a timeout for the animation. This needs to happen before initializing the |
| // recents animation on the WM side since we may decide to cancel the animation there |
| mHandler.postDelayed(mCancelAnimationRunnable, RECENTS_ANIMATION_TIMEOUT); |
| |
| // Fetch all the surface controls and pass them to the client to get the animation |
| // started |
| mWindowManager.cancelRecentsAnimation(); |
| mWindowManager.initializeRecentsAnimation(recentsAnimationRunner, this, |
| display.mDisplayId); |
| |
| // If we updated the launch-behind state, update the visibility of the activities after |
| // we fetch the visible tasks to be controlled by the animation |
| mStackSupervisor.ensureActivitiesVisibleLocked(null, 0, PRESERVE_WINDOWS); |
| } finally { |
| mWindowManager.continueSurfaceLayout(); |
| Trace.traceEnd(TRACE_TAG_ACTIVITY_MANAGER); |
| } |
| } |
| |
| @Override |
| public void onAnimationFinished(boolean moveHomeToTop) { |
| mHandler.removeCallbacks(mCancelAnimationRunnable); |
| synchronized (mService) { |
| if (mWindowManager.getRecentsAnimationController() == null) return; |
| |
| mWindowManager.inSurfaceTransaction(() -> { |
| Trace.traceBegin(TRACE_TAG_ACTIVITY_MANAGER, |
| "RecentsAnimation#onAnimationFinished_inSurfaceTransaction"); |
| mWindowManager.deferSurfaceLayout(); |
| try { |
| mWindowManager.cleanupRecentsAnimation(); |
| |
| // Move the home stack to the front |
| final ActivityRecord homeActivity = mStackSupervisor.getHomeActivity(); |
| if (homeActivity == null) { |
| return; |
| } |
| |
| // Restore the launched-behind state |
| homeActivity.mLaunchTaskBehind = false; |
| |
| if (moveHomeToTop) { |
| // Bring the home stack to the front |
| final ActivityStack homeStack = homeActivity.getStack(); |
| mStackSupervisor.mNoAnimActivities.add(homeActivity); |
| homeStack.moveToFront("RecentsAnimation.onAnimationFinished()"); |
| } else { |
| // Restore the home stack to its previous position |
| final ActivityDisplay display = homeActivity.getDisplay(); |
| display.moveHomeStackBehindStack(mRestoreHomeBehindStack); |
| } |
| |
| mWindowManager.prepareAppTransition(TRANSIT_NONE, false); |
| mStackSupervisor.ensureActivitiesVisibleLocked(null, 0, false); |
| mStackSupervisor.resumeFocusedStackTopActivityLocked(); |
| |
| // No reason to wait for the pausing activity in this case, as the hiding of |
| // surfaces needs to be done immediately. |
| mWindowManager.executeAppTransition(); |
| } finally { |
| mWindowManager.continueSurfaceLayout(); |
| Trace.traceEnd(TRACE_TAG_ACTIVITY_MANAGER); |
| } |
| }); |
| } |
| } |
| |
| /** |
| * Called only when the animation should be canceled prior to starting. |
| */ |
| private void notifyAnimationCancelBeforeStart(IRecentsAnimationRunner recentsAnimationRunner) { |
| try { |
| recentsAnimationRunner.onAnimationCanceled(); |
| } catch (RemoteException e) { |
| Slog.e(TAG, "Failed to cancel recents animation before start", e); |
| } |
| } |
| } |