ImageUtil.java

package jeql.util;

import java.awt.Component;
import java.awt.Image;
import java.awt.Toolkit;
import java.awt.datatransfer.Clipboard;
import java.awt.image.BufferedImage;
import java.awt.image.RenderedImage;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;

import javax.imageio.ImageIO;



public class ImageUtil 
{

  public static String imageFormat(String filename)
  {
    String extension = FileUtil.extension(filename).toLowerCase();
    if (extension.equals("jpg") || extension.equals("jpeg"))
      return "jpg";
    return "png";
  }

  public static String IMAGE_FORMAT_NAME_PNG = "png";
  
  public static void saveImageToClipboard(Component comp, String formatName)
  throws IOException
  {
    Image image = new BufferedImage(
        comp.getSize().width, 
        comp.getSize().height, 
        BufferedImage.TYPE_4BYTE_ABGR);
    comp.paint(image.getGraphics());
    ByteArrayOutputStream bos = new ByteArrayOutputStream();
    ImageIO.write((RenderedImage) image, formatName, bos); 
    
    Clipboard clipboard = Toolkit.getDefaultToolkit().getSystemClipboard();
    ClipImage ci = new ClipImage(bos.toByteArray());
    clipboard.setContents(ci, null);
  }
  
  
  public static void writeImage(Component comp, String filename, String formatName)
  throws IOException
  {
    Image image = new BufferedImage(
        comp.getSize().width, 
        comp.getSize().height, 
        BufferedImage.TYPE_4BYTE_ABGR);
    comp.paint(image.getGraphics());
    
    ImageIO.write((RenderedImage) image, formatName, 
        new File(filename));
  }


}