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  Background Image question...  (Read 1432 times)
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Offline THEOWL

Senior Newbie

Java games rock!

« Posted 2005-03-19 23:01:34 »


I am creating a program where I need a background image to be scrolled.

I have a class that extends JFrame and in that class, I have several JPanels.

For one of the JPanels, I want a background picture. However, the JPanel will be a smaller size than the picture and I want the user to be able to scroll over to the right or left and view the rest of the image.

Also, I am not doing any animation in this program.

Any suggestions would be greatly appreciated.
Offline CaptainJester

JGO Knight

Medals: 12
Projects: 2
Exp: 14 years

Make it work; make it better.

« Reply #1 - Posted 2005-03-20 01:39:49 »

For the JPanel that you have your image on, make it a custom JPanel.  Override paintComponent() to paint the image.  Override getPreferredSize(), getMaximumSize() and getMinimumSize() to return the size of your image.  Place your custom JPanel into a JScrollpane.  The JScroll pane will take care of all the scrolling work for you.

Offline THEOWL

Senior Newbie

Java games rock!

« Reply #2 - Posted 2005-03-20 16:50:22 »

Thanks for the tip.

I actually have another question too...

Is it possible to have the JFrame be set as

while also having a JMenuBar with JMenu's?

I tried putting it on, but there is a wierd effect where a white box appears above teh JMenuBar?

Any ideas?
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Offline CaptainJester

JGO Knight

Medals: 12
Projects: 2
Exp: 14 years

Make it work; make it better.

« Reply #3 - Posted 2005-03-20 17:26:11 »

No idea.  I tried it and did not have a problem.  Maybe you have something extra there.  Here is what I used.
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
public class Test extends JFrame {
    public Test() {
        JMenuBar b = new JMenuBar();
        b.add(new JMenu("File"));
    public static void main(String args[]) throws Exception {
        Test t = new Test();;

Offline THEOWL

Senior Newbie

Java games rock!

« Reply #4 - Posted 2005-03-20 17:34:51 »

Hmmm... that is basically what I have too (although I have my MenuBar as an extended class.

Maybe I do have something extra.

Do you think having JPanels with a setbounds (a,b,c,d) would make a difference?

I'll try it...
Offline THEOWL

Senior Newbie

Java games rock!

« Reply #5 - Posted 2005-03-21 12:13:36 »

I figured it out...

I was trying to add the MenuBar and was also setting it. Getting rid of the 'add' fixed the problem.
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