0

I'm trying to create a chess interface in Java and I'm using a JLayeredPane to put the pieces on top of my chessboard image. The problem is that the pieces are not added to the layered pane.

This is the code for my DragImage class (every piece is going to be an instance of this class which you can drag and drop on the chessboard).

class DragImage extends JComponent implements MouseMotionListener {
        private static final long serialVersionUID = 1L;
        int imageWidth = 52, imageHeight = 52;
        int imageX, imageY;
        Image img;

        public DragImage(Image i) {
            img = i;
            repaint();
            addMouseMotionListener(this);
        }

        public void mouseDragged(MouseEvent e) {
            imageX = e.getX();
            imageY = e.getY();
            repaint();
        }

        public void mouseMoved(MouseEvent e) {
        }

        public void paint(Graphics g) {
            Graphics2D g2 = (Graphics2D) g;

            g2.drawImage(img, imageX, imageY, this);
        }

    }

And this is the code for the JPanel.

The image addresses are correct but they aren't showing up on the panel.

class MyPanel extends JPanel {
        private JLayeredPane layeredPane;
        private JLabel imageContainer = new JLabel();
        private ImageIcon img;

        MyPanel() {
            super();
            img = new ImageIcon("chessboard.png");
            this.imageContainer.setIcon(img);
            this.layeredPane = new JLayeredPane();
            layeredPane.setPreferredSize(new Dimension(416, 416));
            layeredPane.add(imageContainer, 50);
            imageContainer.setBounds(0, 0, img.getIconWidth(),
                    img.getIconHeight());
            int pozx = 52, pozy = 52;
            for (int i = 0; i < 8; i++) {
                for (int j = 0; j < 8; j++) {
                    if(tabla[i][j]!="--"){
                    DragImage img = new DragImage(Toolkit.getDefaultToolkit().getImage("pieces\\" + tabla[i][j] + ".png"));
                    //System.out.println("pieces\\" + tabla[i][j] + ".png");
                    img.setBounds(pozx,pozy,img.imageWidth,img.imageHeight);
                    layeredPane.add(img,100);   //this doesn't work
                    }
                    pozx+=52;
                }
                pozy+=52;
                pozx=52;
            }

            this.add(layeredPane);
        }
}

...

frame = new JFrame();
frame.setVisible(true);
frame.setSize(800, 600);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
panel = new MyPanel();
frame.add(panel);
frame.pack();
4

1 回答 1

0

首先使用分层窗格，然后附加两个面板，一个用于图像，另一个面板用于组件，第二个面板必须是调色板层，然后组件将出现..

于 2013-12-12T06:45:34.640 回答