How to change image layer property

[shall]

Hello,

I created a puzzle in gimp with each of the pieces contained on a different layer. I exported the pieces to individual files and wrote a java program to assemble and move those pieces. When I move the puzzle pieces, I notice that some of the pieces move on top of other pieces while other pieces move behind. I think the reason for this is because I created the pieces on different layers.

How can I make it so that all pieces move on top of each other.

Thanks,
Stephen

[DarrylBurke]

Haven't a clue. You haven't so much as indicated which GUI toolkit is involved.

To get better help sooner, post a SSCCE (Short, Self Contained, Correct (Compilable), Example) that demonstrates the problem.

db

[Norm]

Are you saying that when a piece is moved its layer should be changed to be on top of all the others?

[shall]

Are you saying that when a piece is moved its layer should be changed to be on top of all the others?

Yes,

See the code below for a SSCCE.

puzzlePieceImage2 overlaps puzzlePieceImage1. How can I make it so puzzlePieceImage1 overlaps puzzlePieceImage2.

I wasn't able to attached a zip file which contains the code and images. I clicked on manage attachments and a blank window appeared. Is there something wrong with the forum's attachment functionality?

package imagelayerex;

import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.URL;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.imageio.ImageIO;
import javax.swing.JFrame;
import javax.swing.JPanel;

public class ImageLayerEx {

    private void createGUI() throws URISyntaxException, IOException {
        JFrame puzzleFrame = new JFrame();

        puzzleFrame.setPreferredSize(new Dimension(800, 800));

        PuzzlePanel puzzlePanel = new PuzzlePanel();

        puzzlePanel.setPreferredSize(new Dimension(800, 800));

        puzzleFrame.add(puzzlePanel);

        puzzleFrame.pack();

        puzzleFrame.setVisible(true);
    }

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) throws URISyntaxException, IOException {

        final ImageLayerEx imgLayerEx = new ImageLayerEx();

        javax.swing.SwingUtilities.invokeLater(new Runnable() {

            @Override
            public void run() {
                try {
                    imgLayerEx.createGUI();
                } catch (URISyntaxException ex) {
                    Logger.getLogger(ImageLayerEx.class.getName()).log(Level.SEVERE, null, ex);
                } catch (IOException ex) {
                    Logger.getLogger(ImageLayerEx.class.getName()).log(Level.SEVERE, null, ex);
                }

            }
        });
    }
}

class PuzzlePanel extends JPanel {

    private BufferedImage puzzlePieceImage1;
    private BufferedImage puzzlePieceImage2;

    public PuzzlePanel() throws URISyntaxException, IOException {
        
        loadPuzzlePieces();
    }

    private void loadPuzzlePieces() throws URISyntaxException, IOException {

        URL imageURL = this.getClass().getResource("PuzzlePieces");

        URI imageURI = imageURL.toURI();

        File puzzelPiecesImageDirectory = new File(imageURI);

        File[] listOfFiles = puzzelPiecesImageDirectory.listFiles();

        puzzlePieceImage1 = ImageIO.read(listOfFiles[0]);
        puzzlePieceImage2 = ImageIO.read(listOfFiles[1]);
    }

    @Override
    public void paintComponent(Graphics g) {

        g.drawImage(puzzlePieceImage1, 400, 400, this);
        g.drawImage(puzzlePieceImage2, 450, 450, this);
    }
}