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 static android.app.WindowConfiguration.ACTIVITY_TYPE_STANDARD;
20 import static android.app.WindowConfiguration.WINDOWING_MODE_PINNED;
21 
22 import android.app.RemoteAction;
23 import android.content.res.Configuration;
24 import android.graphics.Rect;
25 
26 import com.android.server.wm.PinnedStackWindowController;
27 import com.android.server.wm.PinnedStackWindowListener;
28 
29 import java.util.ArrayList;
30 import java.util.List;
31 
32 /**
33  * State and management of the pinned stack of activities.
34  */
35 class PinnedActivityStack extends ActivityStack<PinnedStackWindowController>
36         implements PinnedStackWindowListener {
37 
PinnedActivityStack(ActivityDisplay display, int stackId, ActivityStackSupervisor supervisor, boolean onTop)38     PinnedActivityStack(ActivityDisplay display, int stackId, ActivityStackSupervisor supervisor,
39             boolean onTop) {
40         super(display, stackId, supervisor, WINDOWING_MODE_PINNED, ACTIVITY_TYPE_STANDARD, onTop);
41     }
42 
43     @Override
createStackWindowController(int displayId, boolean onTop, Rect outBounds)44     PinnedStackWindowController createStackWindowController(int displayId, boolean onTop,
45             Rect outBounds) {
46         return new PinnedStackWindowController(mStackId, this, displayId, onTop, outBounds,
47                 mStackSupervisor.mWindowManager);
48     }
49 
getDefaultPictureInPictureBounds(float aspectRatio)50     Rect getDefaultPictureInPictureBounds(float aspectRatio) {
51         return getWindowContainerController().getPictureInPictureBounds(aspectRatio,
52                 null /* currentStackBounds */);
53     }
54 
animateResizePinnedStack(Rect sourceHintBounds, Rect toBounds, int animationDuration, boolean fromFullscreen)55     void animateResizePinnedStack(Rect sourceHintBounds, Rect toBounds, int animationDuration,
56             boolean fromFullscreen) {
57         if (skipResizeAnimation(toBounds == null /* toFullscreen */)) {
58             mService.moveTasksToFullscreenStack(mStackId, true /* onTop */);
59         } else {
60             getWindowContainerController().animateResizePinnedStack(toBounds, sourceHintBounds,
61                     animationDuration, fromFullscreen);
62         }
63     }
64 
skipResizeAnimation(boolean toFullscreen)65     private boolean skipResizeAnimation(boolean toFullscreen) {
66         if (!toFullscreen) {
67             return false;
68         }
69         final Configuration parentConfig = getParent().getConfiguration();
70         final ActivityRecord top = topRunningNonOverlayTaskActivity();
71         return top != null && !top.isConfigurationCompatible(parentConfig);
72     }
73 
setPictureInPictureAspectRatio(float aspectRatio)74     void setPictureInPictureAspectRatio(float aspectRatio) {
75         getWindowContainerController().setPictureInPictureAspectRatio(aspectRatio);
76     }
77 
setPictureInPictureActions(List<RemoteAction> actions)78     void setPictureInPictureActions(List<RemoteAction> actions) {
79         getWindowContainerController().setPictureInPictureActions(actions);
80     }
81 
isAnimatingBoundsToFullscreen()82     boolean isAnimatingBoundsToFullscreen() {
83         return getWindowContainerController().isAnimatingBoundsToFullscreen();
84     }
85 
86     /**
87      * Returns whether to defer the scheduling of the multi-window mode.
88      */
deferScheduleMultiWindowModeChanged()89     boolean deferScheduleMultiWindowModeChanged() {
90         // For the pinned stack, the deferring of the multi-window mode changed is tied to the
91         // transition animation into picture-in-picture, and is called once the animation completes,
92         // or is interrupted in a way that would leave the stack in a non-fullscreen state.
93         // @see BoundsAnimationController
94         // @see BoundsAnimationControllerTests
95         return mWindowContainerController.deferScheduleMultiWindowModeChanged();
96     }
97 
updatePictureInPictureModeForPinnedStackAnimation(Rect targetStackBounds, boolean forceUpdate)98     public void updatePictureInPictureModeForPinnedStackAnimation(Rect targetStackBounds,
99             boolean forceUpdate) {
100         // It is guaranteed that the activities requiring the update will be in the pinned stack at
101         // this point (either reparented before the animation into PiP, or before reparenting after
102         // the animation out of PiP)
103         synchronized(this) {
104             ArrayList<TaskRecord> tasks = getAllTasks();
105             for (int i = 0; i < tasks.size(); i++ ) {
106                 mStackSupervisor.updatePictureInPictureMode(tasks.get(i), targetStackBounds,
107                         forceUpdate);
108             }
109         }
110     }
111 }
112