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
17package com.android.server.am;
18
19import android.app.RemoteAction;
20import android.content.res.Configuration;
21import android.graphics.Rect;
22
23import com.android.server.wm.PinnedStackWindowController;
24import com.android.server.wm.PinnedStackWindowListener;
25
26import java.util.ArrayList;
27import java.util.List;
28
29/**
30 * State and management of the pinned stack of activities.
31 */
32class 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