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      1 /*
      2  * Copyright (C) 2017 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.server.am;
     18 
     19 import android.app.RemoteAction;
     20 import android.content.res.Configuration;
     21 import android.graphics.Rect;
     22 
     23 import com.android.server.wm.PinnedStackWindowController;
     24 import com.android.server.wm.PinnedStackWindowListener;
     25 
     26 import java.util.ArrayList;
     27 import java.util.List;
     28 
     29 /**
     30  * State and management of the pinned stack of activities.
     31  */
     32 class PinnedActivityStack extends ActivityStack<PinnedStackWindowController>
     33         implements PinnedStackWindowListener {
     34 
     35     PinnedActivityStack(ActivityStackSupervisor.ActivityDisplay display, int stackId,
     36             ActivityStackSupervisor supervisor, RecentTasks recentTasks, boolean onTop) {
     37         super(display, stackId, supervisor, recentTasks, onTop);
     38     }
     39 
     40     @Override
     41     PinnedStackWindowController createStackWindowController(int displayId, boolean onTop,
     42             Rect outBounds) {
     43         return new PinnedStackWindowController(mStackId, this, displayId, onTop, outBounds);
     44     }
     45 
     46     Rect getDefaultPictureInPictureBounds(float aspectRatio) {
     47         return getWindowContainerController().getPictureInPictureBounds(aspectRatio,
     48                 null /* currentStackBounds */);
     49     }
     50 
     51     void animateResizePinnedStack(Rect sourceHintBounds, Rect toBounds, int animationDuration,
     52             boolean fromFullscreen) {
     53         if (skipResizeAnimation(toBounds == null /* toFullscreen */)) {
     54             mService.moveTasksToFullscreenStack(mStackId, true /* onTop */);
     55         } else {
     56             getWindowContainerController().animateResizePinnedStack(toBounds, sourceHintBounds,
     57                     animationDuration, fromFullscreen);
     58         }
     59     }
     60 
     61     private boolean skipResizeAnimation(boolean toFullscreen) {
     62         if (!toFullscreen) {
     63             return false;
     64         }
     65         final Configuration parentConfig = getParent().getConfiguration();
     66         final ActivityRecord top = topRunningNonOverlayTaskActivity();
     67         return top != null && !top.isConfigurationCompatible(parentConfig);
     68     }
     69 
     70     void setPictureInPictureAspectRatio(float aspectRatio) {
     71         getWindowContainerController().setPictureInPictureAspectRatio(aspectRatio);
     72     }
     73 
     74     void setPictureInPictureActions(List<RemoteAction> actions) {
     75         getWindowContainerController().setPictureInPictureActions(actions);
     76     }
     77 
     78     boolean isAnimatingBoundsToFullscreen() {
     79         return getWindowContainerController().isAnimatingBoundsToFullscreen();
     80     }
     81 
     82     /**
     83      * Returns whether to defer the scheduling of the multi-window mode.
     84      */
     85     boolean deferScheduleMultiWindowModeChanged() {
     86         // For the pinned stack, the deferring of the multi-window mode changed is tied to the
     87         // transition animation into picture-in-picture, and is called once the animation completes,
     88         // or is interrupted in a way that would leave the stack in a non-fullscreen state.
     89         // @see BoundsAnimationController
     90         // @see BoundsAnimationControllerTests
     91         return mWindowContainerController.deferScheduleMultiWindowModeChanged();
     92     }
     93 
     94     public void updatePictureInPictureModeForPinnedStackAnimation(Rect targetStackBounds,
     95             boolean forceUpdate) {
     96         // It is guaranteed that the activities requiring the update will be in the pinned stack at
     97         // this point (either reparented before the animation into PiP, or before reparenting after
     98         // the animation out of PiP)
     99         synchronized(this) {
    100             ArrayList<TaskRecord> tasks = getAllTasks();
    101             for (int i = 0; i < tasks.size(); i++ ) {
    102                 mStackSupervisor.updatePictureInPictureMode(tasks.get(i), targetStackBounds,
    103                         forceUpdate);
    104             }
    105         }
    106     }
    107 }
    108