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Groups > comp.lang.java.help > #1468

Re: Work around requested

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On Dec 21, 7:09 pm, Knute Johnson <nos...@knutejohnson.com> wrote:
> 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

Hi Knute,
Thanks for your help. I have
experimented with your program and
find that the thumbnail images have no
noticeable distortion.

The first time I ran "test.java",
using your image from your URL
I thought the small planet drawings in the
upper corners were a part of the initial download
URL source. I should have read your "test.java"
more carefully.

However, when I replaced your URL, with my
localhost url, I then saw where the thumbnails
are placed.

Finally it was also clear in "test.java"
what you intended me to write from your earlier
help.

Thank you very much.

bH

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Thread

Work around requested bH <bherbst65@hotmail.com> - 2011-12-17 19:03 -0800
  Re: Work around requested Lew <lewbloch@gmail.com> - 2011-12-17 19:19 -0800
    Re: Work around requested "John B. Matthews" <nospam@nospam.invalid> - 2011-12-18 01:36 -0500
      Re: Work around requested Lew <lewbloch@gmail.com> - 2011-12-17 23:39 -0800
      Re: Work around requested bH <bherbst65@hotmail.com> - 2011-12-18 21:01 -0800
        Re: Work around requested bH <bherbst65@hotmail.com> - 2011-12-20 15:46 -0800
          Re: Work around requested Knute Johnson <nospam@knutejohnson.com> - 2011-12-20 16:53 -0800
            Re: Work around requested bH <bherbst65@hotmail.com> - 2011-12-20 17:02 -0800
              Re: Work around requested Knute Johnson <nospam@knutejohnson.com> - 2011-12-20 20:43 -0800
          Re: Work around requested "John B. Matthews" <nospam@nospam.invalid> - 2011-12-20 20:13 -0500
            Re: Work around requested bH <bherbst65@hotmail.com> - 2011-12-20 17:33 -0800
              Re: Work around requested Knute Johnson <nospam@knutejohnson.com> - 2011-12-20 20:47 -0800
                Re: Work around requested bH <bherbst65@hotmail.com> - 2011-12-21 13:58 -0800
                Re: Work around requested Knute Johnson <nospam@knutejohnson.com> - 2011-12-21 16:09 -0800
                Re: Work around requested bH <bherbst65@hotmail.com> - 2011-12-21 18:58 -0800
                Re: Work around requested Knute Johnson <nospam@knutejohnson.com> - 2011-12-21 19:09 -0800
                Re: Work around requested bH <bherbst65@hotmail.com> - 2011-12-21 18:50 -0800
  Re: Work around requested Roedy Green <see_website@mindprod.com.invalid> - 2011-12-18 12:51 -0800
    Re: Work around requested Joerg Meier <joergmmeier@arcor.de> - 2011-12-24 02:18 +0100

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