Source Code : Thumbnail Tools

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Thumbnail Tools

        
//package org.imogene.web.server.util;

import java.awt.Graphics;
import java.awt.Image;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;

import javax.imageio.ImageIO;
import javax.swing.ImageIcon;

public class ThumbnailTools {

  public static final int VERTICAL = 0;
  public static final int HORIZONTAL = 1;

  public static final String IMAGE_JPEG = "jpeg";
  public static final String IMAGE_JPG = "jpg";
  public static final String IMAGE_PNG = "png";

  private ImageIcon image;
  private ImageIcon thumb;

  public ThumbnailTools(Image pImage) {
    image = new ImageIcon(pImage);
  }

  public ThumbnailTools(String fileName) {
    image = new ImageIcon(fileName);
  }

  /**
   * Create a thumbnail for the current image
   * @param size the size
   * @param dir the direction, Horizontal or Vertical
   * @return the thumbnail image
   */
  public Image getThumbnail(int size, int dir) {
    if (dir == HORIZONTAL) {
      thumb = new ImageIcon(image.getImage().getScaledInstance(size, -1,
          Image.SCALE_SMOOTH));
    } else {
      thumb = new ImageIcon(image.getImage().getScaledInstance(-1, size,
          Image.SCALE_SMOOTH));
    }
    return thumb.getImage();
  }

  /**
   * Create a thumbnail for the current image
   * @param size the size
   * @param dir the direction, Horizontal or Vertical
   * @param scale the scale
   * @return the thumbnail image
   */
  public Image getThumbnail(int size, int dir, int scale) {
    if (dir == HORIZONTAL) {
      thumb = new ImageIcon(image.getImage().getScaledInstance(size, -1,
          scale));
    } else {
      thumb = new ImageIcon(image.getImage().getScaledInstance(-1, size,
          scale));
    }
    return thumb.getImage();
  }

  /**
   * Save the thumbnail to the specified file, with the specified type
   * @param file the file
   * @param imageType the image type
   */
  public void saveThumbnail(File file, String imageType) {
    if (thumb != null) {
      BufferedImage bi = new BufferedImage(thumb.getIconWidth(), thumb
          .getIconHeight(), BufferedImage.TYPE_INT_RGB);
      Graphics g = bi.getGraphics();
      g.drawImage(thumb.getImage(), 0, 0, null);
      try {
        ImageIO.write(bi, imageType, file);
      } catch (IOException ioe) {
        throw new RuntimeException("Error occured saving thumbnail");
      }
    } else {
      throw new RuntimeException("Thumbnail have to be created before.");
    }
  }
  
}

   
    
    
    
    
    
    
    
  

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