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 17package android.view.animation; 18 19import android.content.Context; 20import android.util.AttributeSet; 21 22import com.android.internal.view.animation.HasNativeInterpolator; 23import com.android.internal.view.animation.NativeInterpolatorFactory; 24import com.android.internal.view.animation.NativeInterpolatorFactoryHelper; 25 26/** 27 * An interpolator where the rate of change is constant 28 */ 29@HasNativeInterpolator 30public class LinearInterpolator extends BaseInterpolator implements NativeInterpolatorFactory { 31 32 public LinearInterpolator() { 33 } 34 35 public LinearInterpolator(Context context, AttributeSet attrs) { 36 } 37 38 public float getInterpolation(float input) { 39 return input; 40 } 41 42 /** @hide */ 43 @Override 44 public long createNativeInterpolator() { 45 return NativeInterpolatorFactoryHelper.createLinearInterpolator(); 46 } 47} 48