Source Code : Creates a scaled copy of the source image.

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Creates a scaled copy of the source image.

 
/*
 * ImageUtil.java
 *
 * Created on 15 May 2006, 01:12
 *
 * To change this template, choose Tools | Template Manager
 * and open the template in the editor.
 */

import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.image.BufferedImage;

/**
 * Provides utility methods for handling images (<tt>java.awt.BufferedImage</tt>
 * )
 * 
 * @author Ian McDonagh
 */
public class ImageUtil {
  /**
   * Creates a scaled copy of the source image.
   * 
   * @param src
   *            source image to be scaled
   * @param width
   *            the width for the new scaled image in pixels
   * @param height
   *            the height for the new scaled image in pixels
   * @return a copy of the source image scaled to <tt>width</tt> x
   *         <tt>height</tt> pixels.
   */
  public static BufferedImage scaleImage(BufferedImage src, int width,
      int height) {
    Image scaled = src.getScaledInstance(width, height, 0);
    BufferedImage ret = null;
    /*
     * ColorModel cm = src.getColorModel(); if (cm instanceof
     * IndexColorModel) { ret = new BufferedImage( width, height,
     * src.getType(), (IndexColorModel) cm ); } else { ret = new
     * BufferedImage( src.getWidth(), src.getHeight(), src.getType() ); }
     * Graphics2D g = ret.createGraphics(); //clear alpha channel Composite
     * comp = g.getComposite();
     * g.setComposite(AlphaComposite.getInstance(AlphaComposite.CLEAR,
     * 0.0f)); Rectangle2D.Double d = new
     * Rectangle2D.Double(0,0,ret.getWidth(),ret.getHeight()); g.fill(d);
     * g.setComposite(comp);
     */
    ret = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
    Graphics2D g = ret.createGraphics();
    // copy image
    g.drawImage(scaled, 0, 0, null);
    return ret;
  }
}

   
  

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