RRDraw.java 文件源码

public RRDraw() {
    super("File View Test Frame");
    setSize(350, 400);
    setDefaultCloseOperation(EXIT_ON_CLOSE);
    parent = this;
    rrDrawPanel = new RRDrawPanel();
    Container c = getContentPane();
    // The default BorderLayout will work better.
    // c.setLayout(new FlowLayout());

    JButton openButton = new JButton("Open");
    final JLabel statusbar = new JLabel("Output of your selection will go here");

    openButton.addActionListener(new ActionListener() {
        @Override
        public void actionPerformed(ActionEvent ae) {
            JFileChooser chooser = new JFileChooser("images");

            int option = chooser.showOpenDialog(parent);
            if (option == JFileChooser.APPROVE_OPTION) {
                File file = chooser.getSelectedFile();
                BufferedImage loadImage = loadImage(file);
                statusbar.setText(file.getName() + " size " + loadImage.getWidth() + "x" + loadImage.getHeight());
                // setSize(loadImage.getWidth(), loadImage.getHeight());
                rrDrawPanel.setSize(loadImage.getHeight(), loadImage.getWidth());
            } else {
                statusbar.setText("You cancelled.");
            }
        }
    });

    JPanel north = new JPanel();
    north.add(openButton);
    north.add(statusbar);

    north.setBackground(Color.GRAY);
    north.setForeground(Color.BLUE);
    c.add(north, "First");
    c.add(new JScrollPane(rrDrawPanel), "Center");

}