Trying to load an image and modifying it....

[Nick St-Peter]

Hi!

I am trying to load an image (background) which I can later modify using the drawString, drawRect, etc... methods of the Graphics class (the JVM I must use is 1.1.8 and it cannot be changed so I believe forces me to use Graphics instead of Graphics2D)..

I tried to load the image and draw on it and that didn't work (it crashed...) so I tried to create a new image and draw the first one on it and while that didn't crash the image was never actually drawn on the first...

Is there a known good way to do what I want to do (and that works with such an old JDK...)?

Thanks!

Nick

[Michael Dunn]

don't know how compliant this is with 1.1.8 (can't test it)

    
import java.awt.*;
class Testing
{
  public Testing()
  {
    Frame f = new Frame();
    f.setLocation(200,100);
    f.add(new ImagePanel("Test.gif"));
    f.pack();
    f.setVisible(true);
    f.addWindowListener(new java.awt.event.WindowAdapter(){
      public void windowClosing(java.awt.event.WindowEvent we){
        System.exit(0);}});
  }
  public static void main(String[] args) {new Testing();}
}
class ImagePanel extends Panel
{
  Image img;
  public ImagePanel(String file)
  {
    setPreferredSize(new Dimension(300,300));
    try
    {
      img = Toolkit.getDefaultToolkit().createImage(new java.net.URL(getClass().getResource(file), file));
    }
    catch(Exception e){}//handled in paint()
  }
  public void paint(Graphics g)
  {
    super.paint(g);
    if(img != null) g.drawImage(img,0,0,getWidth(),getHeight(),this);
    else g.drawString("Image not found", 50,50);
  }
}

[Nick St-Peter]

Thanks!!!

I can't test for now as I don't have such an old JVM at home either...

Have a nice day!

Nick

[Nick St-Peter]

[browser just crashed so I have to retype everything... ]

O.k.

I got it to work, at least partially, by combining some parts of the code above with some info I found elsewhere on the web...

The problem I have now is that everything is in gray scale... I had read somewhere that this could be an issue with that JDK (1.1) but I thought it was only when drawImage() was used but even if I don't use it everything is still in black & white...

Was JDK 1.1 limited to using only gray scale graphics, I find this hard to believe...

Nick

PS: Thanks Jeff for telling me where I could delete my previous post...