Attached watermarking sign to picture using scripting?

Posted on 2004-08-09
Last Modified: 2010-04-01
Hi there,

I know that my points currently not enough but i'm really would like to know the solution to my problem.

Hope someone will generous enough to help me.......

I would like to display pictures in a browser and i will also put a watermarking into the picture also.
So now my problem is that how to put "watermarking" to the pictures. The pictures are residing in
a when i use <img src="...."> to display it, a script will automatically put a watermarking
to all the pictures.

The watermarking that i'm saying is, for example...some pictures got a word "SAMPLE" attached to
the picture itself......

Usually graphic designer will put the "SAMPLE" word to each pictures in layer.... But i would like to know
if scripting could do the same.........

Please advice me on this...

Thanks in advanced

Question by:kennethcky
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LVL 35

Accepted Solution

TimYates earned 25 total points
ID: 11750707
Not with javascript...

You could point the IMG src tag at a servlet, and have that servlet load the image you asked for, add some text to it using Java2D, and then return the final image as a JPG...


Author Comment

ID: 11750921

Do you have any Java2D that very close related to my problem that I could take a look?


Author Comment

ID: 11758970
Hi there,

I found a code which could solved my problem, but its using applet.....Could this code converted to
servlet and retrieve the pict from browser(jsp)?

Could someone advice me on this..?



import java.awt.*;
import java.awt.event.*;
import com.sun.image.codec.jpeg.*;
import java.awt.image.BufferedImage;
import java.awt.image.DataBuffer;
import java.awt.geom.*;
import javax.swing.*;

public class JPEGJ2d extends JApplet {

    private static Image img;

    public void init() {
        img = getToolkit().getImage(JPEGJ2d.class.getResource("duke.jpg"));
        try {
            MediaTracker tracker = new MediaTracker(this);
            tracker.addImage(img, 0);
        } catch (Exception e) {}

    public void paint(Graphics g) {
        Graphics2D g2 = (Graphics2D) g;
      Dimension d = getSize();
        g2.clearRect(0, 0, d.width, d.height);
      int w = d.width;
      int h = d.height;

        BufferedImage bi = (BufferedImage) createImage(w, h);
        Graphics2D big = bi.createGraphics();

        big.drawImage(img, 0, 0, null);
        big.setFont(new Font("Dialog", Font.PLAIN, 10));
        big.drawString("BufferedImage", 4, 12);

      //To rotate the image, comment the following line
        //g2.drawImage(bi, 0, 0, this);

      //comment including g2.drawimage() if you dont want to rotate
      double x = 0.5*w;
        double y = 0.5*h;
        AffineTransform at = new AffineTransform();
        g2.drawImage(bi, 0, 0, null);

        try {
             File file = new File("images", "test.jpg");
             FileOutputStream out = new FileOutputStream(file);

            JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
            JPEGEncodeParam param = encoder.getDefaultJPEGEncodeParam(bi);
            param.setQuality(1.0f, false);

//          ImageIO.write(bi, "jpeg", out);
        } catch (Exception ex) {
            g2.drawString("write permissions on images/test.jpg?", 5, h*2-5);


    public static void main(String argv[]) {
        final JPEGJ2d demo = new JPEGJ2d();
        JFrame f = new JFrame("Java 2D(TM) Demo - JPEGJ2d");
        f.addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent e) {System.exit(0);}
        f.getContentPane().add("Center", demo);
        f.setSize(new Dimension(400,300));;

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