ViewAnimation.java revision 740c3ac782675d190941b2ab1905e56f246c1b11 
1/*
2 * Copyright (C) 2014 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.systemui.recents.views;
18
19import android.animation.ValueAnimator;
20import android.graphics.Rect;
21import com.android.systemui.recents.misc.ReferenceCountedTrigger;
22
23/* Common code related to view animations */
24public class ViewAnimation {
25
26    /* The animation context for a task view animation into Recents */
27    public static class TaskViewEnterContext {
28        // A trigger to run some logic when all the animations complete.  This works around the fact
29        // that it is difficult to coordinate ViewPropertyAnimators
30        public ReferenceCountedTrigger postAnimationTrigger;
31        // An update listener to notify as the enter animation progresses (used for the home transition)
32        ValueAnimator.AnimatorUpdateListener updateListener;
33
34        // These following properties are updated for each task view we start the enter animation on
35
36        // Whether or not the current task occludes the launch target
37        boolean currentTaskOccludesLaunchTarget;
38        // The task rect for the current stack
39        Rect currentTaskRect;
40        // The transform of the current task view
41        TaskViewTransform currentTaskTransform;
42        // The view index of the current task view
43        int currentStackViewIndex;
44        // The total number of task views
45        int currentStackViewCount;
46
47        public TaskViewEnterContext(ReferenceCountedTrigger t) {
48            postAnimationTrigger = t;
49        }
50    }
51
52    /* The animation context for a task view animation out of Recents */
53    public static class TaskViewExitContext {
54        // A trigger to run some logic when all the animations complete.  This works around the fact
55        // that it is difficult to coordinate ViewPropertyAnimators
56        ReferenceCountedTrigger postAnimationTrigger;
57
58        // The translationY to apply to a TaskView to move it off the bottom of the task stack
59        int offscreenTranslationY;
60
61        public TaskViewExitContext(ReferenceCountedTrigger t) {
62            postAnimationTrigger = t;
63        }
64    }
65
66}
67