1 /*
2  * Copyright (C) 2015 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.camera.ui.motion;
18 
19 import android.content.Context;
20 import android.view.animation.AnimationUtils;
21 import android.view.animation.DecelerateInterpolator;
22 import android.view.animation.Interpolator;
23 
24 import com.android.camera.util.ApiHelper;
25 
26 import javax.annotation.Nonnull;
27 
28 public class InterpolatorHelper {
29     private static Interpolator LINEAR_OUT_SLOW_IN = null;
30 
31     @Nonnull
getLinearOutSlowInInterpolator(final @Nonnull Context context)32     public static Interpolator getLinearOutSlowInInterpolator(final @Nonnull Context context) {
33         if (LINEAR_OUT_SLOW_IN != null) {
34             return LINEAR_OUT_SLOW_IN;
35         }
36 
37         if (ApiHelper.isLOrHigher()) {
38             LINEAR_OUT_SLOW_IN = AnimationUtils.loadInterpolator(
39                     context, android.R.interpolator.linear_out_slow_in);
40         } else {
41             LINEAR_OUT_SLOW_IN = new DecelerateInterpolator();
42         }
43         return LINEAR_OUT_SLOW_IN;
44     }
45 }
46