xref: /packages/apps/Launcher3/src/com/android/launcher3/LauncherAnimatorUpdateListener.java

/*
 * Copyright (C) 2011 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.android.launcher3;

import android.animation.ValueAnimator;
import android.animation.ValueAnimator.AnimatorUpdateListener;

abstract class LauncherAnimatorUpdateListener implements AnimatorUpdateListener {
    public void onAnimationUpdate(ValueAnimator animation) {
        final float b = (Float) animation.getAnimatedValue();
        final float a = 1f - b;
        onAnimationUpdate(a, b);
    }

    abstract void onAnimationUpdate(float a, float b);
}