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