Help!!! Image print problem
hi,
I want to print an image using JAI(Java Advance Imaging). I have something which scales the image
first and then prints it out. It prints the image, but the resolution of the Image is horrible.
The image comes out so blury it hard to see. Can anybody help me with this problem.
Any help is always appreciated.
Here is the Code.
import java.util.*;
import java.awt.*;
import java.awt.geom.*;
import java.awt.image.*;
import java.awt.print.*;
import javax.media.jai.*;
import com.sun.media.jai.codec.*;
import java.awt.image.renderable.ParameterBlock;
import javax.swing.RepaintManager;
* <p>Title: </p>
* <p>Description: </p>
* <p>Copyright: Copyright (c) 2002</p>
* <p>Company: </p>
* @author unascribed
* @version 1.0
public class JAIImagePrint implements Printable {
protected RenderedImage renderedImage;
protected int imageWidth, imageHeight;
protected Point printLoc = new Point(0,0);
public void setPrintLocation(Point d) {
printLoc = d;
public Point getPrintLocation() {
return printLoc;
public void loadAndPrint(String filename){
RenderedOp renderedOp = JAI.create("fileload", filename);
renderedImage = renderedOp.createInstance();
print();
protected void print() {
PrinterJob pj = PrinterJob.getPrinterJob().getPrinterJob();
pj.setPrintable(this);
pj.printDialog();
try{
pj.print();
}catch(Exception e){System.out.println(e);}
public int print(Graphics g, PageFormat f, int pageIndex){
if(pageIndex >= 1) return Printable.NO_SUCH_PAGE;
Graphics2D g2d = (Graphics2D) g;
g2d.translate(f.getImageableX(), f.getImageableY());
if(renderedImage != null){
double scale = Math.min(f.getImageableWidth()/ renderedImage.getWidth(), f.getImageableHeight()/renderedImage.getHeight());
Interpolation interp = Interpolation.getInstance(Interpolation.INTERP_BICUBIC);
ParameterBlock params = new ParameterBlock();
params.addSource(renderedImage);
params.add(new Float(scale));
params.add(new Float(scale));
params.add(0.0F);
params.add(0.0F);
params.add(interp);
PlanarImage image = JAI.create("scale",params);
printImage(g2d, image);
return Printable.PAGE_EXISTS;
} else return Printable.NO_SUCH_PAGE;
public void printImage(Graphics2D g2d, RenderedImage image){
if((image == null)|| (g2d == null)) return;
int x = printLoc.x;
int y = printLoc.y;
AffineTransform at = new AffineTransform();
at.translate(x,y);
g2d.drawRenderedImage(image,at);
I have run into the same problem. From what I have seen the Image object is only capable of handling a pixel based picture. A pixel based picture only has a resolution of 72 dots per inch, where as most printers have a much higher resolution.
I haven't found a way around it yet. But I am looking at some alternative methods.
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Good luck and please let me know the results of your troubleshooting steps. Thank you for posting on the HP Forums!
Please click “Accept as Solution " if you feel my post solved your issue, it will help others find the solution.
Click the “Kudos, Thumbs Up" on the right to say “Thanks" for helping!
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Problem: codebase, jar and image reloading problem please help!
Hi Java Gurus,
I have written an applet that extends JApplet for viewing webcam. In order to reduce the download time I put my classes into a doorcam.jar file. The following is my <applet> tag in my html file.
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I wanted all my classes to be loaded from my jar file. After much of trial and error I found out that if i remove "codebase" attribute the browser loads the classes from my jar file and applet loads very fast. This is where the second problem comes in. The browser does not reload my webcam image file so that the webcam become alive with live images, like before.
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private void refresh(final URL url) {
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I tested on Windows 2000, Windows XP, IE 5.5, IE 6 with J2SDK 1.4.0.
Thank you all very much in advance.
best regards,
JudgeThank you so much for the suggestions. I did tried the way u suggested. The problem still the same.
I think its the problem between IE browser and Java Plug-in.
I which SUN would find these incompatibilities and solve these problems.
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best regards,
Judge
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