Having images as background of JPanel

by

Why not make a single class that takes a Image??

public class ImagePane extends JPanel {

    private Image image;

    public ImagePane(Image image) {
        this.image = image;
    }

    @Override
    public Dimension getPreferredSize() {
        return image == null ? new Dimension(0, 0) : new Dimension(image.getWidth(this), image.getHeight(this));
    }

    @Override
    protected void paintComponent(Graphics g) {
        super.paintComponent(g);
        Graphics2D g2d = (Graphics2D) g.create();
        g2d.drawImage(image, 0, 0, this);
        g2d.dispose();
    }
}

You would even provide hints about where it should be painted.

This way, you could simply create an instance when ever you needed it

Updated

The other question is, why?

You could just use a JLabel which will paint the icon for you without any additional work…

See How to use labels for more details…

This is actually a bad idea, as JLabel does NOT use it’s child components when calculating it’s preferred size, it only uses the size of the image and the text properties when determining it’s preferred size, this can result in the component been sized incorrectly

More Related Contents:

  1. Make a object when pressed follow mouse pointer, java [closed]
  2. Simplest way to set image as JPanel background
  3. Add an Background image to a Panel
  4. How to draw in JPanel? (Swing/graphics Java)
  5. Why does calling dispose() on Graphics object cause JPanel to not render any components
  6. Infinite background for game
  7. Clicking on a drawn object
  8. Program not accessing method paintComponent() of extended JPanel class
  9. Setting background images in JFrame
  10. get width and height of JPanel outside of the class
  11. Only one component shows up in JFrame
  12. How do I Switch JPanels inside a JFrame
  13. Drawing Multiple JComponents to a Frame
  14. JLabel – Show longer text as multiple lines?
  15. Stretch a JLabel text
  16. ‘Fill’ Unicode characters in labels
  17. Drawing rectangle on a JPanel
  18. the images are not loading
  19. Does adding a JLabel to a JPanel “hide” the JPanel?
  20. Printing a JPanel with Scrollable Jtable On it [closed]
  21. Java make a directed line and make it move
  22. How do I paint multiple objetcs that move at different speeds in Java?
  23. How to switch JPanels in a JFrame from within the panel?
  24. JFrame background image
  25. JPanel Padding in Java
  26. How do I draw an image to a JPanel or JFrame?
  27. JPanel Drop Shadow
  28. How to right-justify icon in a JLabel?
  29. What is the relation between ContentPane and JPanel?
  30. Can I add a component to a specific grid cell when a GridLayout is used?

Leave a Comment