Hi,

I am trying to add a jpeg as a packground to my JFrame. I have read quite a few posts on how to do it in here, but none seem to work . Has anybody tried this and goit it working? If so some tips would be good.

Thanks

 

 

import java.awt.event.*;
import javax.swing.*;
import java.awt.*;
 
public class BackgroundImage extends JFrame
{
	JScrollPane scrollPane;
	ImageIcon icon;
	Image image;
 
	public BackgroundImage()
	{
		icon = new ImageIcon("???.jpg");
 
		JPanel panel = new JPanel()
		{
			protected void paintComponent(Graphics g)
			{
				//  Dispaly image at at full size
				g.drawImage(icon.getImage(), 0, 0, null);
 
				//  Scale image to size of component
//				Dimension d = getSize();
//				g.drawImage(icon.getImage(), 0, 0, d.width, d.height, null);
 
				//  Fix the image position in the scroll pane
//				Point p = scrollPane.getViewport().getViewPosition();
//				g.drawImage(icon.getImage(), p.x, p.y, null);
 
				super.paintComponent(g);
			}
		};
		panel.setOpaque( false );
		panel.setPreferredSize( new Dimension(400, 400) );
		scrollPane = new JScrollPane( panel );
		getContentPane().add( scrollPane );
 
		JButton button = new JButton( "Hello" );
		panel.add( button );
	}
 
	public static void main(String [] args)
	{
		BackgroundImage frame = new BackgroundImage();
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		frame.setSize(300, 300);
		frame.setLocationRelativeTo( null );
		frame.setVisible(true);
	}
}

I've also been playing around with an ImagePanel which allows you do to much the same thing without overriding any methods. Its just got some basic funtionality, but you may find it usefull:

http://www.discoverteenergy.com/files/ImagePanel.java

 

 

hi,

thanks for code, it is working fine.

 

 

And for that you woke up a mummy?!

 

 

deleted by poster

Message was edited by:
acupofjadaykeepsmicrofostaway

 

 

I have a problem with background image when i use internal frames.

I use a JDesktopPane which i puts into a container (Which has the ContentPane of the frame) and my internal frames are not displayed (Only the buttons and the textfields are displayed).

An idea ?

Message was edited by:
SnowFalcon

 

 

The code posted here works.

Since you have customized the code we don't know what your are doing.

So create your own postiing (no need to clutter this posting) and post your own demo code. That is, create a [url http://homepage1.nifty.com/algafield/sscce.html]Short, Self Contained, Compilable and Executable, Example Program[/url] (SSCCE) that demonstrates the incorrect behaviour, because I can't guess exactly what you are doing based on the information provided.

Don't forget to use the [url http://forum.java.sun.com/help.jspa?sec=formatting]Code Formatting Tags[/url] so the posted code retains its original formatting.

 

 

I have a question about this piece. Im guessing you are overriding the method as soon as you create the object.
Is that whats going on?

JPanel panel = new JPanel()
		{
			protected void paintComponent(Graphics g)
			{
				//  Dispaly image at at full size
				g.drawImage(icon.getImage(), 0, 0, null);
 
				//  Scale image to size of component
//				Dimension d = getSize();
//				g.drawImage(icon.getImage(), 0, 0, d.width, d.height, null);
 
				//  Fix the image position in the scroll pane
//				Point p = scrollPane.getViewport().getViewPosition();
//				g.drawImage(icon.getImage(), p.x, p.y, null);
 
				super.paintComponent(g);
			}
		};

 

 

It's called an anonymous inner class.

Next time, create your own topic, Your question is not even related to the original post.

db

 

 

With some changes, the JPanel resize to the image size:

import javax.swing.*;
import java.awt.*;
import java.net.URL;
 
/ A <code>JFrame</code> with a background image */ 
public class BackgroundImage extends JFrame
{
	final ImageIcon icon;
	final boolean isRedimensionable;
 
	public BackgroundImage(URL url, boolean isRedimensionable) {
		icon = new ImageIcon(url.getFile());
		this.isRedimensionable = isRedimensionable;
 
		JPanel panel = new JPanel()
		{
			protected void paintComponent(Graphics g)
			{
				if (BackgroundImage.this.isRedimensionable) {
					//  Scale image to size of component
					Dimension d = getSize();
					g.drawImage(icon.getImage(), 0, 0, d.width, d.height, null);
 
				} else  {
					//  Dispaly image at at full size
					g.drawImage(icon.getImage(), 0, 0, null);
				}
 
				super.paintComponent(g);
			}
		};
		panel.setOpaque( false );
		getContentPane().add( panel );
 
		Dimension dim = new Dimension(icon.getIconWidth()  +getInsets().left+  getInsets().right, icon.getIconHeight()  +getInsets().top+  getInsets().bottom) ;
		panel.setPreferredSize(dim);
		setResizable(isRedimensionable);
		pack();
 
		JButton button = new JButton( "Hello" );
		panel.add( button );
	}
 
	public static void main(String [] args)
	{
		BackgroundImage frame = new BackgroundImage(BackgroundImage.class.getResource("loginDialogBackground.png"), true);
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		frame.setLocationRelativeTo( null );
		frame.setVisible(true);
	}
}

 

 

Faucheux , thanks, but please don't post to years old threads. Locking.