Android Open Source - unknown-pleasures Scrollable Original Cover Animator

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The source code is released under:

Creative Commons Attribution NonCommercial NoDerivs (CC-NC-ND) THE WORK (AS DEFINED BELOW) IS PROVIDED UNDER THE TERMS OF THIS CREATIVE COMMONS PUBLIC LICENSE ("CCPL" OR "LICENSE"). THE WORK IS PROTE...

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Java Source Code

/**
 * ScrollableOriginalCoverAnimator.java//from   w ww  .  j  av a 2s  .c om
 * Author: marek.brodziak@gmail.com
 * Created: May 21, 2014
 * Copyright 2014 by miniti
 */

package pl.miniti.android.pleasures.animation;

import java.util.List;

import android.graphics.Path;

/**
 * Abstract {@see Animator} which offers support for basic scrollable animation
 */
public class ScrollableOriginalCoverAnimator implements Animator {

  /**
   * Collection of currently available paths
   */
  protected List<Path> paths;

  /**
   * Current animation offset for calculating frames
   */
  private int offset = 0;

  /**
   * Total number of lines
   */
  private int total;

  /**
   * No-arg default constructor
   */
  public ScrollableOriginalCoverAnimator() {
    paths = OriginalCover.paths();
  }

  /*
   * (non-Javadoc)
   * 
   * @see pl.miniti.android.pleasures.animation.Animator#of(int, int)
   */
  @Override
  public Path of(int line, int of) {
    total = of;
    int index = line + offset;
    index = index >= of ? index - of : index;
    return paths.get(index);
  }

  /*
   * (non-Javadoc)
   * 
   * @see pl.miniti.android.pleasures.animation.Animator#frame()
   */
  @Override
  public void frame() {
    ++offset;
    if (offset >= total) {
      offset = 0;
    }
  }

}

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