How to draw different objects with paintComponent()?

Question

I am trying to draw several things inside a JPanel. I am drawing shapes (works), and I also want to fill the JPanel with a picture. But paintComponent() only takes one argument. And this gets complicated when I have some extra code for drawing the shapes.

My paintComponent() method is currently like this:

public void paintComponent(Graphics g) {


    g2 = (Graphics2D) g;
    for (int i = 0; i < shapes.size(); i++) {
        Shape s = (Shape) shapes.get(i);
        if (s != null)
            g2.draw(s);
    }
}

I have searched around a lot and cannot find a way to do this.

Does anyone know how to do this, or maybe some workaround?

Have a look at this http://stackoverflow.com/questions/299495/java-swing-how-to-add-an-image-to-a-jpanel — Kakalokia, Jan 28 '13 at 20:59
Yes, i accidently left it out because i were removing some commenting. — geirmash, Jan 28 '13 at 21:17
Thank you Ali Alamiri, but the real problem for me is that i pass in the image as a Graphics object. This gets complicated since the shapes drawn in paintComponent() is also passed in as Graphics objects. — geirmash, Jan 28 '13 at 21:19
My bad. Ignore my last comment. I just added g2.drawImage(images[0], 0, 0, null); in paintComponent(). And repaint(); Thanks for answering guys! — geirmash, Jan 28 '13 at 22:03

score 1 · Answer 1 · edited May 23 '17 at 11:56

Just like your approach to drawing shapes, you need to maintain a reference to the images you want to draw within the class and reference them in much the same way.

The following are all examples of drawing images within paintComponent, on a verity of topics

Nb - I may be misreading this, but you should never be calling paintComponent yourself. It is called on your behalf by the repaint engine within Swing

How to draw different objects with paintComponent()?

1 Answers1