Android Open Source - ViewPagerTransforms Background To Foreground Transformer

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Back to project page ViewPagerTransforms.

License

The source code is released under:

Apache License

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Java Source Code

/*
 * Copyright 2014 Toxic Bakery//  w  w  w. j  a  va2  s. c  o m
 *
 * 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.ToxicBakery.viewpager.transforms;

import android.view.View;

public class BackgroundToForegroundTransformer extends ABaseTransformer {

  @Override
  protected void onTransform(View view, float position) {
    final float height = view.getHeight();
    final float width = view.getWidth();
    final float scale = min(position < 0 ? 1f : Math.abs(1f - position), 0.5f);

    view.setScaleX(scale);
    view.setScaleY(scale);
    view.setPivotX(width * 0.5f);
    view.setPivotY(height * 0.5f);
    view.setTranslationX(position < 0 ? width * position : -width * position * 0.25f);
  }

}

Java Source Code List