1 /*
2  * Copyright (C) 2016 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;
18 
19 import android.view.animation.AccelerateDecelerateInterpolator;
20 import android.view.animation.AccelerateInterpolator;
21 import android.view.animation.DecelerateInterpolator;
22 import android.view.animation.Interpolator;
23 import android.view.animation.LinearInterpolator;
24 import android.view.animation.PathInterpolator;
25 
26 /**
27  * Utility class to receive interpolators from
28  */
29 public class Interpolators {
30     public static final Interpolator FAST_OUT_SLOW_IN = new PathInterpolator(0.4f, 0f, 0.2f, 1f);
31     public static final Interpolator FAST_OUT_LINEAR_IN = new PathInterpolator(0.4f, 0f, 1f, 1f);
32     public static final Interpolator LINEAR_OUT_SLOW_IN = new PathInterpolator(0f, 0f, 0.2f, 1f);
33     public static final Interpolator ALPHA_IN = new PathInterpolator(0.4f, 0f, 1f, 1f);
34     public static final Interpolator ALPHA_OUT = new PathInterpolator(0f, 0f, 0.8f, 1f);
35     public static final Interpolator LINEAR = new LinearInterpolator();
36     public static final Interpolator ACCELERATE = new AccelerateInterpolator();
37     public static final Interpolator ACCELERATE_DECELERATE = new AccelerateDecelerateInterpolator();
38     public static final Interpolator DECELERATE_QUINT = new DecelerateInterpolator(2.5f);
39 
40     /**
41      * Interpolator to be used when animating a move based on a click. Pair with enough duration.
42      */
43     public static final Interpolator TOUCH_RESPONSE =
44             new PathInterpolator(0.3f, 0f, 0.1f, 1f);
45 }
46