Path: csiph.com!x330-a1.tempe.blueboxinc.net!usenet.pasdenom.info!aioe.org!eternal-september.org!feeder.eternal-september.org!mx04.eternal-september.org!.POSTED!not-for-mail
From: Knute Johnson <nospam@knutejohnson.com>
Newsgroups: comp.lang.java.help
Subject: Re: Work around requested
Date: Wed, 21 Dec 2011 16:09:15 -0800
Organization: A noiseless patient Spider
Lines: 154
Message-ID: <jctsfd$sk5$1@dont-email.me>
References: <b887a9d5-a48b-409a-aee1-b1c95397506c@y7g2000vbe.googlegroups.com> <17844998.127.1324178380897.JavaMail.geo-discussion-forums@pril5> <nospam-92C1F7.01364918122011@news.aioe.org> <a400090b-3fe9-4395-9435-75f0754bca78@h3g2000yqa.googlegroups.com> <4decc207-ebaa-4d1c-9952-b73f18817f08@k10g2000yqk.googlegroups.com> <nospam-51D024.20134520122011@news.aioe.org> <1ba91a9f-d3e9-45df-8986-2de9165aeb93@q9g2000yqe.googlegroups.com> <jcrod7$2oc$2@dont-email.me> <ffcfe0ff-2022-4a3b-bdca-a3437ff44dfa@y18g2000yqy.googlegroups.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Injection-Date: Thu, 22 Dec 2011 00:09:17 +0000 (UTC)
Injection-Info: mx04.eternal-september.org; posting-host="mz/LDSJwiWnk3Jnnqg7x+Q"; logging-data="29317"; mail-complaints-to="abuse@eternal-september.org";	posting-account="U2FsdGVkX1+czyQwYu0siZZISxyOMoos"
User-Agent: Mozilla/5.0 (Windows NT 5.1; rv:8.0) Gecko/20111105 Thunderbird/8.0
In-Reply-To: <ffcfe0ff-2022-4a3b-bdca-a3437ff44dfa@y18g2000yqy.googlegroups.com>
Cancel-Lock: sha1:yZ4SqRgBUVXaraw89SkJPAxT1aY=
Xref: x330-a1.tempe.blueboxinc.net comp.lang.java.help:1467

On 12/21/2011 1:58 PM, bH wrote:
>
> Hi Knute,
> I am in need of further help as to how and
> where to place what you wrote above.
> I have tried various locations within my work.
> Nothing seems to help to make the resulting
> thumbnail show any improvement.
> TIA
> bH

import java.awt.*;
import java.awt.event.*;
import java.awt.image.*;
import java.awt.geom.*;
import java.io.*;
import java.net.*;
import javax.imageio.*;
import javax.swing.*;

public class test extends JPanel implements ActionListener {
     private final JFrame frame;
     private final RenderingHints hints;
     private BufferedImage image,thumb1,thumb2;

     public test(JFrame frame) {
         this.frame = frame;

         hints = new RenderingHints(
          RenderingHints.KEY_INTERPOLATION,
          RenderingHints.VALUE_INTERPOLATION_BICUBIC);
         hints.add(new RenderingHints(
          RenderingHints.KEY_ALPHA_INTERPOLATION,
          RenderingHints.VALUE_ALPHA_INTERPOLATION_QUALITY));
         hints.add(new RenderingHints(
          RenderingHints.KEY_COLOR_RENDERING,
          RenderingHints.VALUE_COLOR_RENDER_QUALITY));

         try {
             URL url =
              new URL("http://rabbitbrush.frazmtn.com/saturn.jpg");
             image = ImageIO.read(url);
             setPreferredSize(
              new Dimension(image.getWidth(),image.getHeight()));

             thumb1 = scaleImage(image,.25,.25,
              AffineTransformOp.TYPE_BICUBIC);
             thumb2 = scaleImage(image,.25,.25,hints);

             // if the image needs to have the colorspace converted
             // image = convertToCompatible(image);
         } catch (MalformedURLException murle) {
             JOptionPane.showMessageDialog(this,murle);
         } catch (IOException ioe) {
             JOptionPane.showMessageDialog(this,ioe);
         }
     }

     public void actionPerformed(ActionEvent ae) {
         String ac = ae.getActionCommand();
         if (ac.equals("url")) {
             String input =
              JOptionPane.showInputDialog(this,"Enter Image URL");
             if (!input.equals("")) {
                 try {
                     URL url = new URL(input);
                     image = ImageIO.read(url);
                     setPreferredSize(
                      new Dimension(image.getWidth(),image.getHeight()));

                     thumb1 = scaleImage(image,.25,.25,
                      AffineTransformOp.TYPE_BICUBIC);
                     thumb2 = scaleImage(image,.25,.25,hints);

                     setPreferredSize(new Dimension(image.getWidth(),
                      image.getHeight()));
                     frame.pack();
                     repaint();
                 } catch (MalformedURLException murle) {
                     JOptionPane.showMessageDialog(this,murle);
                 } catch (IOException ioe) {
                     JOptionPane.showMessageDialog(this,ioe);
                 }
             }
         }
     }

     public void paintComponent(Graphics g) {
         g.drawImage(image,0,0,null);
         g.drawImage(thumb1,0,0,null);
         g.drawImage(thumb2,getWidth()-thumb2.getWidth(),0,null);
     }

     public static BufferedImage scaleImage(BufferedImage src, double sx,
      double sy, int interpolationType) {
         AffineTransformOp op = new AffineTransformOp(
          AffineTransform.getScaleInstance(sx,sy),interpolationType);
         return op.filter(src,null);
     }

     public static BufferedImage scaleImage(BufferedImage src, double sx,
      double sy, RenderingHints hints) {
         AffineTransformOp op = new AffineTransformOp(
          AffineTransform.getScaleInstance(sx,sy),hints);
         return op.filter(src,null);
     }

     public static BufferedImage convertToCompatible(BufferedImage image) {
         GraphicsEnvironment ge =
          GraphicsEnvironment.getLocalGraphicsEnvironment();
         GraphicsDevice gd = ge.getDefaultScreenDevice();
         GraphicsConfiguration gc = gd.getDefaultConfiguration();

         BufferedImage compatible = 
gc.createCompatibleImage(image.getWidth(),
          image.getHeight());

         if (compatible.getType() == image.getType())
             return image;

         ColorConvertOp op = new ColorConvertOp(
          image.getColorModel().getColorSpace(),
          compatible.getColorModel().getColorSpace(),null);

         return op.filter(image,compatible);
     }

     public static void main(String[] args) {
         EventQueue.invokeLater(new Runnable() {
             public void run() {
                 JFrame f = new JFrame();
                 f.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);

                 test t = new test(f);

                 JMenuBar mb = new JMenuBar();
                 f.setJMenuBar(mb);
                 JMenu file = new JMenu("file");
                 mb.add(file);
                 JMenuItem url = new JMenuItem("url");
                 url.addActionListener(t);
                 file.add(url);

                 f.add(t);
                 f.pack();
                 f.setVisible(true);
             }
         });
     }
}

-- 

Knute Johnson