1 /*
2  * Copyright (C) 2006 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 android.view.animation;
18 
19 import android.content.Context;
20 import android.util.AttributeSet;
21 
22 import com.android.internal.view.animation.HasNativeInterpolator;
23 import com.android.internal.view.animation.NativeInterpolatorFactory;
24 import com.android.internal.view.animation.NativeInterpolatorFactoryHelper;
25 
26 /**
27  * An interpolator where the rate of change is constant
28  */
29 @HasNativeInterpolator
30 public class LinearInterpolator extends BaseInterpolator implements NativeInterpolatorFactory {
31 
LinearInterpolator()32     public LinearInterpolator() {
33     }
34 
LinearInterpolator(Context context, AttributeSet attrs)35     public LinearInterpolator(Context context, AttributeSet attrs) {
36     }
37 
getInterpolation(float input)38     public float getInterpolation(float input) {
39         return input;
40     }
41 
42     /** @hide */
43     @Override
createNativeInterpolator()44     public long createNativeInterpolator() {
45         return NativeInterpolatorFactoryHelper.createLinearInterpolator();
46     }
47 }
48