可滚动的JPanel

Question

如何使JPanel可滚动？我实现了可滚动界面，但在将其添加到包含面板时

tabbedPane.add("Editor", new JScrollPane(storeyEditor = new MNScrollablePanel()));

什么都行不通

码：

public class MNScrollablePanel extends JPanel implements Scrollable {

    public Dimension getPreferredScrollableViewportSize() {
        return getPreferredSize();
    }

    public int getScrollableBlockIncrement(Rectangle visibleRect, int orientation, int direction) {
        return 10;
    }

    public boolean getScrollableTracksViewportHeight() {
        return false;
    }

    public boolean getScrollableTracksViewportWidth() {
        return false;
    }

    public int getScrollableUnitIncrement(Rectangle visibleRect, int orientation, int direction) {
        return 10;
    }
}

Answer 1

您必须使用JScrollPane。然后致电setViewportview(Component)；

您不必实现可滚动的，JPanel已经可以滚动