1 /*
2  * Copyright (C) 2024 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.systemui.animation;
18 
19 import android.util.ArrayMap;
20 import android.view.RemoteAnimationTarget;
21 import android.view.SurfaceControl;
22 import android.window.TransitionInfo;
23 import android.window.TransitionInfo.Change;
24 
25 import com.android.wm.shell.shared.TransitionUtil;
26 
27 import java.util.ArrayList;
28 import java.util.function.Predicate;
29 
30 /**
31  * Some utility methods for creating {@link RemoteAnimationTarget} instances.
32  */
33 public class RemoteAnimationTargetCompat {
34 
35     /**
36      * Represents a TransitionInfo object as an array of old-style app targets
37      *
38      * @param leashMap Temporary map of change leash -> launcher leash. Is an output, so should be
39      *                 populated by this function. If null, it is ignored.
40      */
wrapApps(TransitionInfo info, SurfaceControl.Transaction t, ArrayMap<SurfaceControl, SurfaceControl> leashMap)41     public static RemoteAnimationTarget[] wrapApps(TransitionInfo info,
42             SurfaceControl.Transaction t, ArrayMap<SurfaceControl, SurfaceControl> leashMap) {
43         // LeafTaskFilter is order-dependent, so the same object needs to be used for all Change
44         // objects. That's why it's constructed here and captured by the lambda instead of building
45         // a new one ad hoc every time.
46         TransitionUtil.LeafTaskFilter taskFilter = new TransitionUtil.LeafTaskFilter();
47         return wrap(info, t, leashMap, (change) -> {
48             // Intra-task activity -> activity transitions should be categorized as apps.
49             if (change.getActivityComponent() != null) return true;
50             return taskFilter.test(change);
51         });
52     }
53 
54     /**
55      * Represents a TransitionInfo object as an array of old-style non-app targets
56      *
57      * @param wallpapers If true, this will return wallpaper targets; otherwise it returns
58      *                   non-wallpaper targets.
59      * @param leashMap Temporary map of change leash -> launcher leash. Is an output, so should be
60      *                 populated by this function. If null, it is ignored.
61      */
wrapNonApps(TransitionInfo info, boolean wallpapers, SurfaceControl.Transaction t, ArrayMap<SurfaceControl, SurfaceControl> leashMap)62     public static RemoteAnimationTarget[] wrapNonApps(TransitionInfo info, boolean wallpapers,
63             SurfaceControl.Transaction t, ArrayMap<SurfaceControl, SurfaceControl> leashMap) {
64         return wrap(info, t, leashMap, (change) -> {
65             // Intra-task activity -> activity transitions should be categorized as apps.
66             if (change.getActivityComponent() != null) return false;
67             return wallpapers
68                     ? TransitionUtil.isWallpaper(change) : TransitionUtil.isNonApp(change);
69         });
70     }
71 
72     private static RemoteAnimationTarget[] wrap(TransitionInfo info,
73             SurfaceControl.Transaction t, ArrayMap<SurfaceControl, SurfaceControl> leashMap,
74             Predicate<Change> filter) {
75         final ArrayList<RemoteAnimationTarget> out = new ArrayList<>();
76         for (int i = 0; i < info.getChanges().size(); i++) {
77             TransitionInfo.Change change = info.getChanges().get(i);
78             if (TransitionUtil.isOrderOnly(change)) continue;
79             if (filter.test(change)) {
80                 out.add(TransitionUtil.newTarget(
81                         change, info.getChanges().size() - i, info, t, leashMap));
82             }
83         }
84         return out.toArray(new RemoteAnimationTarget[out.size()]);
85     }
86 }
87