1 /*
2  * Copyright (C) 2011 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.launcher2;
18 
19 import android.animation.ValueAnimator;
20 import android.animation.ValueAnimator.AnimatorUpdateListener;
21 
22 abstract class LauncherAnimatorUpdateListener implements AnimatorUpdateListener {
onAnimationUpdate(ValueAnimator animation)23     public void onAnimationUpdate(ValueAnimator animation) {
24         final float b = (Float) animation.getAnimatedValue();
25         final float a = 1f - b;
26         onAnimationUpdate(a, b);
27     }
28 
onAnimationUpdate(float a, float b)29     abstract void onAnimationUpdate(float a, float b);
30 }