FileDocCategorySizeDatePackage
ScrollDemo.javaAPI DocExample2957Tue Dec 12 18:59:18 GMT 2000None

ScrollDemo

public class ScrollDemo extends JPanel

Fields Summary
private Rule
columnView
private Rule
rowView
private JToggleButton
isMetric
private ScrollablePicture
picture
Constructors Summary
public ScrollDemo()

        // Start loading the image icon now.
        ImageIcon david = new ImageIcon("images/youngdad.jpeg");

        // Create the row and column headers.
        columnView = new Rule(Rule.HORIZONTAL, true);
        columnView.setPreferredWidth(david.getIconWidth());
        rowView = new Rule(Rule.VERTICAL, true);
        rowView.setPreferredHeight(david.getIconHeight());

        // Create the corners.
        JPanel buttonCorner = new JPanel();
        isMetric = new JToggleButton("cm", true);
        isMetric.setFont(new Font("SansSerif", Font.PLAIN, 11));
        isMetric.setMargin(new Insets(2,2,2,2));
        isMetric.addItemListener(new UnitsListener());
        buttonCorner.add(isMetric); //Use the default FlowLayout

        // Set up the scroll pane.
        picture = new ScrollablePicture(david, columnView.getIncrement());
        JScrollPane pictureScrollPane = new JScrollPane(picture);
        pictureScrollPane.setPreferredSize(new Dimension(300, 250));
        pictureScrollPane.setViewportBorder(
                BorderFactory.createLineBorder(Color.black));

        pictureScrollPane.setColumnHeaderView(columnView);
        pictureScrollPane.setRowHeaderView(rowView);

        pictureScrollPane.setCorner(JScrollPane.UPPER_LEFT_CORNER, 
                                    buttonCorner);
        pictureScrollPane.setCorner(JScrollPane.LOWER_LEFT_CORNER,
                                    new Corner());
        pictureScrollPane.setCorner(JScrollPane.UPPER_RIGHT_CORNER,
                                    new Corner());

        // Put it in this panel.
        setLayout(new BoxLayout(this, BoxLayout.X_AXIS));
        add(pictureScrollPane);
        setBorder(BorderFactory.createEmptyBorder(20,20,20,20));
Methods Summary
public static voidmain(java.lang.String[] s)

        JFrame frame = new JFrame("ScrollDemo");
        frame.addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent e) {
                System.exit(0);
            }
        });
 
        frame.setContentPane(new ScrollDemo());
        frame.pack();
        frame.setVisible(true);