| /* |
| * 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.wm; |
| |
| import static android.app.ActivityManager.START_TASK_TO_FRONT; |
| import static android.app.WindowConfiguration.ACTIVITY_TYPE_HOME; |
| import static android.app.WindowConfiguration.ACTIVITY_TYPE_RECENTS; |
| import static android.app.WindowConfiguration.WINDOWING_MODE_UNDEFINED; |
| 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_WINDOW_MANAGER; |
| import static android.view.WindowManager.TRANSIT_NONE; |
| |
| import static com.android.server.wm.ActivityStackSupervisor.PRESERVE_WINDOWS; |
| import static com.android.server.wm.BoundsAnimationController.BOUNDS; |
| import static com.android.server.wm.BoundsAnimationController.FADE_IN; |
| import static com.android.server.wm.ProtoLogGroup.WM_DEBUG_RECENTS_ANIMATIONS; |
| import static com.android.server.wm.RecentsAnimationController.REORDER_KEEP_IN_PLACE; |
| import static com.android.server.wm.RecentsAnimationController.REORDER_MOVE_TO_ORIGINAL_POSITION; |
| import static com.android.server.wm.RecentsAnimationController.REORDER_MOVE_TO_TOP; |
| |
| import android.annotation.Nullable; |
| import android.app.ActivityOptions; |
| import android.content.ComponentName; |
| import android.content.Intent; |
| import android.os.RemoteException; |
| import android.os.Trace; |
| import android.util.Slog; |
| import android.view.IRecentsAnimationRunner; |
| |
| import com.android.internal.util.function.pooled.PooledLambda; |
| import com.android.internal.util.function.pooled.PooledPredicate; |
| import com.android.server.protolog.common.ProtoLog; |
| import com.android.server.wm.ActivityMetricsLogger.LaunchingState; |
| import com.android.server.wm.RecentsAnimationController.RecentsAnimationCallbacks; |
| |
| /** |
| * 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, |
| DisplayContent.OnStackOrderChangedListener { |
| private static final String TAG = RecentsAnimation.class.getSimpleName(); |
| |
| private final ActivityTaskManagerService mService; |
| private final ActivityStackSupervisor mStackSupervisor; |
| private final ActivityStartController mActivityStartController; |
| private final WindowManagerService mWindowManager; |
| private final DisplayContent mDefaultDisplay; |
| private final Intent mTargetIntent; |
| private final ComponentName mRecentsComponent; |
| private final @Nullable String mRecentsFeatureId; |
| private final int mRecentsUid; |
| private final @Nullable WindowProcessController mCaller; |
| private final int mUserId; |
| private final int mTargetActivityType; |
| |
| /** |
| * The activity which has been launched behind. We need to remember the activity because the |
| * target stack may have other activities, then we are able to restore the launch-behind state |
| * for the exact activity. |
| */ |
| private ActivityRecord mLaunchedTargetActivity; |
| |
| // The stack to restore the target stack behind when the animation is finished |
| private ActivityStack mRestoreTargetBehindStack; |
| |
| RecentsAnimation(ActivityTaskManagerService atm, ActivityStackSupervisor stackSupervisor, |
| ActivityStartController activityStartController, WindowManagerService wm, |
| Intent targetIntent, ComponentName recentsComponent, @Nullable String recentsFeatureId, |
| int recentsUid, @Nullable WindowProcessController caller) { |
| mService = atm; |
| mStackSupervisor = stackSupervisor; |
| mDefaultDisplay = mService.mRootWindowContainer.getDefaultDisplay(); |
| mActivityStartController = activityStartController; |
| mWindowManager = wm; |
| mTargetIntent = targetIntent; |
| mRecentsComponent = recentsComponent; |
| mRecentsFeatureId = recentsFeatureId; |
| mRecentsUid = recentsUid; |
| mCaller = caller; |
| mUserId = atm.getCurrentUserId(); |
| mTargetActivityType = targetIntent.getComponent() != null |
| && recentsComponent.equals(targetIntent.getComponent()) |
| ? ACTIVITY_TYPE_RECENTS |
| : ACTIVITY_TYPE_HOME; |
| } |
| |
| /** |
| * Starts the recents activity in background without animation if the record doesn't exist or |
| * the client isn't launched. If the recents activity is already alive, ensure its configuration |
| * is updated to the current one. |
| */ |
| void preloadRecentsActivity() { |
| ProtoLog.d(WM_DEBUG_RECENTS_ANIMATIONS, "Preload recents with %s", |
| mTargetIntent); |
| ActivityStack targetStack = mDefaultDisplay.getStack(WINDOWING_MODE_UNDEFINED, |
| mTargetActivityType); |
| ActivityRecord targetActivity = getTargetActivity(targetStack); |
| if (targetActivity != null) { |
| if (targetActivity.mVisibleRequested || targetActivity.isTopRunningActivity()) { |
| // The activity is ready. |
| return; |
| } |
| if (targetActivity.attachedToProcess()) { |
| // The activity may be relaunched if it cannot handle the current configuration |
| // changes. The activity will be paused state if it is relaunched, otherwise it |
| // keeps the original stopped state. |
| targetActivity.ensureActivityConfiguration(0 /* globalChanges */, |
| false /* preserveWindow */, true /* ignoreVisibility */); |
| ProtoLog.d(WM_DEBUG_RECENTS_ANIMATIONS, "Updated config=%s", |
| targetActivity.getConfiguration()); |
| } |
| } else { |
| // Create the activity record. Because the activity is invisible, this doesn't really |
| // start the client. |
| startRecentsActivityInBackground("preloadRecents"); |
| targetStack = mDefaultDisplay.getStack(WINDOWING_MODE_UNDEFINED, mTargetActivityType); |
| targetActivity = getTargetActivity(targetStack); |
| if (targetActivity == null) { |
| Slog.w(TAG, "Cannot start " + mTargetIntent); |
| return; |
| } |
| } |
| |
| if (!targetActivity.attachedToProcess()) { |
| ProtoLog.d(WM_DEBUG_RECENTS_ANIMATIONS, "Real start recents"); |
| mStackSupervisor.startSpecificActivity(targetActivity, false /* andResume */, |
| false /* checkConfig */); |
| // Make sure the activity won't be involved in transition. |
| if (targetActivity.getDisplayContent() != null) { |
| targetActivity.getDisplayContent().mUnknownAppVisibilityController |
| .appRemovedOrHidden(targetActivity); |
| } |
| } |
| |
| // Invisible activity should be stopped. If the recents activity is alive and its doesn't |
| // need to relaunch by current configuration, then it may be already in stopped state. |
| if (!targetActivity.isState(ActivityStack.ActivityState.STOPPING, |
| ActivityStack.ActivityState.STOPPED)) { |
| // Add to stopping instead of stop immediately. So the client has the chance to perform |
| // traversal in non-stopped state (ViewRootImpl.mStopped) that would initialize more |
| // things (e.g. the measure can be done earlier). The actual stop will be performed when |
| // it reports idle. |
| targetActivity.addToStopping(true /* scheduleIdle */, true /* idleDelayed */, |
| "preloadRecents"); |
| } |
| } |
| |
| void startRecentsActivity(IRecentsAnimationRunner recentsAnimationRunner) { |
| ProtoLog.d(WM_DEBUG_RECENTS_ANIMATIONS, "startRecentsActivity(): intent=%s", mTargetIntent); |
| Trace.traceBegin(TRACE_TAG_WINDOW_MANAGER, "RecentsAnimation#startRecentsActivity"); |
| |
| // TODO(multi-display) currently only support recents animation in default display. |
| final DisplayContent dc = |
| mService.mRootWindowContainer.getDefaultDisplay().mDisplayContent; |
| if (!mWindowManager.canStartRecentsAnimation()) { |
| notifyAnimationCancelBeforeStart(recentsAnimationRunner); |
| ProtoLog.d(WM_DEBUG_RECENTS_ANIMATIONS, |
| "Can't start recents animation, nextAppTransition=%s", |
| dc.mAppTransition.getAppTransition()); |
| return; |
| } |
| |
| // If the activity is associated with the recents stack, then try and get that first |
| ActivityStack targetStack = mDefaultDisplay.getStack(WINDOWING_MODE_UNDEFINED, |
| mTargetActivityType); |
| ActivityRecord targetActivity = getTargetActivity(targetStack); |
| final boolean hasExistingActivity = targetActivity != null; |
| if (hasExistingActivity) { |
| final DisplayContent display = targetActivity.getDisplay(); |
| mRestoreTargetBehindStack = display.getStackAbove(targetStack); |
| if (mRestoreTargetBehindStack == null) { |
| notifyAnimationCancelBeforeStart(recentsAnimationRunner); |
| ProtoLog.d(WM_DEBUG_RECENTS_ANIMATIONS, |
| "No stack above target stack=%s", targetStack); |
| return; |
| } |
| } |
| |
| // Send launch hint if we are actually launching the target. If it's already visible |
| // (shouldn't happen in general) we don't need to send it. |
| if (targetActivity == null || !targetActivity.mVisibleRequested) { |
| mService.mRootWindowContainer.sendPowerHintForLaunchStartIfNeeded( |
| true /* forceSend */, targetActivity); |
| } |
| |
| final LaunchingState launchingState = |
| mStackSupervisor.getActivityMetricsLogger().notifyActivityLaunching(mTargetIntent); |
| |
| if (mCaller != null) { |
| mCaller.setRunningRecentsAnimation(true); |
| } |
| |
| mService.deferWindowLayout(); |
| try { |
| if (hasExistingActivity) { |
| // Move the recents activity into place for the animation if it is not top most |
| mDefaultDisplay.moveStackBehindBottomMostVisibleStack(targetStack); |
| ProtoLog.d(WM_DEBUG_RECENTS_ANIMATIONS, "Moved stack=%s behind stack=%s", |
| targetStack, mDefaultDisplay.getStackAbove(targetStack)); |
| |
| // If there are multiple tasks in the target stack (ie. the home stack, with 3p |
| // and default launchers coexisting), then move the task to the top as a part of |
| // moving the stack to the front |
| final Task task = targetActivity.getTask(); |
| if (targetStack.getTopMostTask() != task) { |
| targetStack.positionChildAtTop(task); |
| } |
| } else { |
| // No recents activity, create the new recents activity bottom most |
| startRecentsActivityInBackground("startRecentsActivity_noTargetActivity"); |
| |
| // Move the recents activity into place for the animation |
| targetStack = mDefaultDisplay.getStack(WINDOWING_MODE_UNDEFINED, |
| mTargetActivityType); |
| targetActivity = getTargetActivity(targetStack); |
| mDefaultDisplay.moveStackBehindBottomMostVisibleStack(targetStack); |
| ProtoLog.d(WM_DEBUG_RECENTS_ANIMATIONS, "Moved stack=%s behind stack=%s", |
| targetStack, mDefaultDisplay.getStackAbove(targetStack)); |
| |
| mWindowManager.prepareAppTransition(TRANSIT_NONE, false); |
| mWindowManager.executeAppTransition(); |
| |
| // TODO: Maybe wait for app to draw in this particular case? |
| |
| ProtoLog.d(WM_DEBUG_RECENTS_ANIMATIONS, "Started intent=%s", mTargetIntent); |
| } |
| |
| // Mark the target activity as launch-behind to bump its visibility for the |
| // duration of the gesture that is driven by the recents component |
| targetActivity.mLaunchTaskBehind = true; |
| mLaunchedTargetActivity = targetActivity; |
| |
| // Fetch all the surface controls and pass them to the client to get the animation |
| // started. Cancel any existing recents animation running synchronously (do not hold the |
| // WM lock) |
| mWindowManager.cancelRecentsAnimation(REORDER_MOVE_TO_ORIGINAL_POSITION, |
| "startRecentsActivity"); |
| mWindowManager.initializeRecentsAnimation(mTargetActivityType, recentsAnimationRunner, |
| this, mDefaultDisplay.getDisplayId(), |
| mStackSupervisor.mRecentTasks.getRecentTaskIds(), targetActivity); |
| |
| // 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 |
| mService.mRootWindowContainer.ensureActivitiesVisible(null, 0, PRESERVE_WINDOWS); |
| |
| mStackSupervisor.getActivityMetricsLogger().notifyActivityLaunched(launchingState, |
| START_TASK_TO_FRONT, targetActivity); |
| |
| // Register for stack order changes |
| mDefaultDisplay.registerStackOrderChangedListener(this); |
| } catch (Exception e) { |
| Slog.e(TAG, "Failed to start recents activity", e); |
| throw e; |
| } finally { |
| mService.continueWindowLayout(); |
| Trace.traceEnd(TRACE_TAG_WINDOW_MANAGER); |
| } |
| } |
| |
| private void finishAnimation(@RecentsAnimationController.ReorderMode int reorderMode, |
| boolean sendUserLeaveHint) { |
| synchronized (mService.mGlobalLock) { |
| ProtoLog.d(WM_DEBUG_RECENTS_ANIMATIONS, |
| "onAnimationFinished(): controller=%s reorderMode=%d", |
| mWindowManager.getRecentsAnimationController(), reorderMode); |
| |
| // Unregister for stack order changes |
| mDefaultDisplay.unregisterStackOrderChangedListener(this); |
| |
| final RecentsAnimationController controller = |
| mWindowManager.getRecentsAnimationController(); |
| if (controller == null) return; |
| |
| // Just to be sure end the launch hint in case the target activity was never launched. |
| // However, if we're keeping the activity and making it visible, we can leave it on. |
| if (reorderMode != REORDER_KEEP_IN_PLACE) { |
| mService.mRootWindowContainer.sendPowerHintForLaunchEndIfNeeded(); |
| } |
| |
| // Once the target is shown, prevent spurious background app switches |
| if (reorderMode == REORDER_MOVE_TO_TOP) { |
| mService.stopAppSwitches(); |
| } |
| |
| if (mCaller != null) { |
| mCaller.setRunningRecentsAnimation(false); |
| } |
| |
| mWindowManager.inSurfaceTransaction(() -> { |
| Trace.traceBegin(TRACE_TAG_WINDOW_MANAGER, |
| "RecentsAnimation#onAnimationFinished_inSurfaceTransaction"); |
| mService.deferWindowLayout(); |
| try { |
| mWindowManager.cleanupRecentsAnimation(reorderMode); |
| |
| final ActivityStack targetStack = mDefaultDisplay.getStack( |
| WINDOWING_MODE_UNDEFINED, mTargetActivityType); |
| // Prefer to use the original target activity instead of top activity because |
| // we may have moved another task to top (starting 3p launcher). |
| final ActivityRecord targetActivity = targetStack != null |
| ? targetStack.isInStackLocked(mLaunchedTargetActivity) |
| : null; |
| ProtoLog.d(WM_DEBUG_RECENTS_ANIMATIONS, |
| "onAnimationFinished(): targetStack=%s targetActivity=%s " |
| + "mRestoreTargetBehindStack=%s", |
| targetStack, targetActivity, mRestoreTargetBehindStack); |
| if (targetActivity == null) { |
| return; |
| } |
| |
| // Restore the launched-behind state |
| targetActivity.mLaunchTaskBehind = false; |
| |
| if (reorderMode == REORDER_MOVE_TO_TOP) { |
| // Bring the target stack to the front |
| mStackSupervisor.mNoAnimActivities.add(targetActivity); |
| |
| if (sendUserLeaveHint) { |
| // Setting this allows the previous app to PiP. |
| mStackSupervisor.mUserLeaving = true; |
| targetStack.moveTaskToFront(targetActivity.getTask(), |
| true /* noAnimation */, null /* activityOptions */, |
| targetActivity.appTimeTracker, |
| "RecentsAnimation.onAnimationFinished()"); |
| } else { |
| targetStack.moveToFront("RecentsAnimation.onAnimationFinished()"); |
| } |
| |
| if (WM_DEBUG_RECENTS_ANIMATIONS.isLogToAny()) { |
| final ActivityStack topStack = getTopNonAlwaysOnTopStack(); |
| if (topStack != targetStack) { |
| ProtoLog.w(WM_DEBUG_RECENTS_ANIMATIONS, |
| "Expected target stack=%s" |
| + " to be top most but found stack=%s", |
| targetStack, topStack); |
| } |
| } |
| } else if (reorderMode == REORDER_MOVE_TO_ORIGINAL_POSITION){ |
| // Restore the target stack to its previous position |
| final DisplayContent display = targetActivity.getDisplay(); |
| display.moveStackBehindStack(targetStack, mRestoreTargetBehindStack); |
| if (WM_DEBUG_RECENTS_ANIMATIONS.isLogToAny()) { |
| final ActivityStack aboveTargetStack = |
| mDefaultDisplay.getStackAbove(targetStack); |
| if (mRestoreTargetBehindStack != null |
| && aboveTargetStack != mRestoreTargetBehindStack) { |
| ProtoLog.w(WM_DEBUG_RECENTS_ANIMATIONS, |
| "Expected target stack=%s to restored behind stack=%s but" |
| + " it is behind stack=%s", |
| targetStack, mRestoreTargetBehindStack, aboveTargetStack); |
| } |
| } |
| } else { |
| // If there is no recents screenshot animation, we can update the visibility |
| // of target stack immediately because it is visually invisible and the |
| // launch-behind state is restored. That also prevents the next transition |
| // type being disturbed if the visibility is updated after setting the next |
| // transition (the target activity will be one of closing apps). |
| if (!controller.shouldDeferCancelWithScreenshot() |
| && !targetStack.isFocusedStackOnDisplay()) { |
| targetStack.ensureActivitiesVisible(null /* starting */, |
| 0 /* starting */, false /* preserveWindows */); |
| } |
| // Keep target stack in place, nothing changes, so ignore the transition |
| // logic below |
| return; |
| } |
| |
| mWindowManager.prepareAppTransition(TRANSIT_NONE, false); |
| mService.mRootWindowContainer.ensureActivitiesVisible(null, 0, false); |
| mService.mRootWindowContainer.resumeFocusedStacksTopActivities(); |
| |
| // No reason to wait for the pausing activity in this case, as the hiding of |
| // surfaces needs to be done immediately. |
| mWindowManager.executeAppTransition(); |
| |
| if (targetStack.getTile() != null) { |
| // Client state may have changed during the recents animation, so force |
| // send task info so the client can synchronize its state. |
| mService.mTaskOrganizerController.dispatchTaskInfoChanged( |
| targetStack.mTile, true /* force */); |
| } |
| } catch (Exception e) { |
| Slog.e(TAG, "Failed to clean up recents activity", e); |
| throw e; |
| } finally { |
| mService.continueWindowLayout(); |
| Trace.traceEnd(TRACE_TAG_WINDOW_MANAGER); |
| } |
| }); |
| } |
| } |
| |
| @Override |
| public void onAnimationFinished(@RecentsAnimationController.ReorderMode int reorderMode, |
| boolean sendUserLeaveHint) { |
| finishAnimation(reorderMode, sendUserLeaveHint); |
| } |
| |
| @Override |
| public void onStackOrderChanged(ActivityStack stack) { |
| ProtoLog.d(WM_DEBUG_RECENTS_ANIMATIONS, "onStackOrderChanged(): stack=%s", stack); |
| if (mDefaultDisplay.getIndexOf(stack) == -1 || !stack.shouldBeVisible(null)) { |
| // The stack is not visible, so ignore this change |
| return; |
| } |
| final RecentsAnimationController controller = |
| mWindowManager.getRecentsAnimationController(); |
| if (controller == null) { |
| return; |
| } |
| |
| final DisplayContent dc = |
| mService.mRootWindowContainer.getDefaultDisplay().mDisplayContent; |
| dc.mBoundsAnimationController.setAnimationType( |
| controller.shouldDeferCancelUntilNextTransition() ? FADE_IN : BOUNDS); |
| |
| // We defer canceling the recents animation until the next app transition in the following |
| // cases: |
| // 1) The next launching task is not being animated by the recents animation |
| // 2) The next task is home activity. (i.e. pressing home key to back home in recents). |
| if ((!controller.isAnimatingTask(stack.getTopMostTask()) |
| || controller.isTargetApp(stack.getTopNonFinishingActivity())) |
| && controller.shouldDeferCancelUntilNextTransition()) { |
| // Always prepare an app transition since we rely on the transition callbacks to cleanup |
| mWindowManager.prepareAppTransition(TRANSIT_NONE, false); |
| controller.setCancelOnNextTransitionStart(); |
| } else { |
| // Just cancel directly to unleash from launcher when the next launching task is the |
| // current top task. |
| mWindowManager.cancelRecentsAnimation(REORDER_KEEP_IN_PLACE, "stackOrderChanged"); |
| } |
| } |
| |
| private void startRecentsActivityInBackground(String reason) { |
| final ActivityOptions options = ActivityOptions.makeBasic(); |
| options.setLaunchActivityType(mTargetActivityType); |
| options.setAvoidMoveToFront(); |
| mTargetIntent.addFlags(FLAG_ACTIVITY_NEW_TASK | FLAG_ACTIVITY_NO_ANIMATION); |
| |
| mActivityStartController |
| .obtainStarter(mTargetIntent, reason) |
| .setCallingUid(mRecentsUid) |
| .setCallingPackage(mRecentsComponent.getPackageName()) |
| .setCallingFeatureId(mRecentsFeatureId) |
| .setActivityOptions(new SafeActivityOptions(options)) |
| .setUserId(mUserId) |
| .execute(); |
| } |
| |
| /** |
| * Called only when the animation should be canceled prior to starting. |
| */ |
| static void notifyAnimationCancelBeforeStart(IRecentsAnimationRunner recentsAnimationRunner) { |
| try { |
| recentsAnimationRunner.onAnimationCanceled(null /* taskSnapshot */); |
| } catch (RemoteException e) { |
| Slog.e(TAG, "Failed to cancel recents animation before start", e); |
| } |
| } |
| |
| /** |
| * @return The top stack that is not always-on-top. |
| */ |
| private ActivityStack getTopNonAlwaysOnTopStack() { |
| for (int i = mDefaultDisplay.getStackCount() - 1; i >= 0; i--) { |
| final ActivityStack s = mDefaultDisplay.getStackAt(i); |
| if (s.getWindowConfiguration().isAlwaysOnTop()) { |
| continue; |
| } |
| return s; |
| } |
| return null; |
| } |
| |
| /** |
| * @return the top activity in the {@param targetStack} matching the {@param component}, or just |
| * the top activity of the top task if no task matches the component. |
| */ |
| private ActivityRecord getTargetActivity(ActivityStack targetStack) { |
| if (targetStack == null) { |
| return null; |
| } |
| |
| final PooledPredicate p = PooledLambda.obtainPredicate(RecentsAnimation::matchesTarget, |
| this, PooledLambda.__(Task.class)); |
| final Task task = targetStack.getTask(p); |
| p.recycle(); |
| return task != null ? task.getTopNonFinishingActivity() : null; |
| } |
| |
| private boolean matchesTarget(Task task) { |
| return task.mUserId == mUserId |
| && task.getBaseIntent().getComponent().equals(mTargetIntent.getComponent()); |
| } |
| } |