Java Swing组件定制CheckBox示例

package themedemo;
import java.awt.BasicStroke;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.GridLayout;
import java.awt.RenderingHints;
import java.util.Map;
import javax.swing.BorderFactory;
import javax.swing.JCheckBox;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.Painter;
import javax.swing.SwingUtilities;
import javax.swing.UIDefaults;
import javax.swing.UIManager;
import javax.swing.WindowConstants;
public class CheckBoxSkinDemo {
  public static void main(String[] args) {
    SwingUtilities.invokeLater(new Runnable() {
      public void run() {
        for (UIManager.LookAndFeelInfo laf : UIManager
            .getInstalledLookAndFeels()) {
          if ("Nimbus".equals(laf.getName())) {
            try {
              UIManager.setLookAndFeel(laf.getClassName());
            } catch (Exception e) {
              e.printStackTrace();
            }
          }
        }
        for (Map.Entry<Object, Object> entry : UIManager
            .getLookAndFeelDefaults().entrySet()) {
          if ((entry.getKey().toString()).startsWith("CheckBox")) {
            System.out.println(entry.getKey() + " = "
                + entry.getValue());
          }
        }
        JFrame frame = new JFrame("www.jb51.net - CheckBox Skining Demo");
        frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        frame.getContentPane().setLayout(new BorderLayout());
        JPanel panel = new JPanel(new GridLayout(0, 1, 20, 20));
        panel.setBorder(BorderFactory.createEmptyBorder(20, 20, 20, 20));
        panel.setBackground(Color.darkGray);
        UIDefaults checkBoxDefaults = new UIDefaults();
        checkBoxDefaults.put("CheckBox.iconPainter",
            new Painter<JComponent>() {
              public void paint(Graphics2D g, JComponent c,
                  int w, int h) {
                g.setRenderingHint(
                    RenderingHints.KEY_ANTIALIASING,
                    RenderingHints.VALUE_ANTIALIAS_ON);
                g.setStroke(new BasicStroke(2f));
                g.setColor(Color.WHITE);
                g.fillRect(1, 1, w - 4, h - 4);
                g.setColor(Color.LIGHT_GRAY);
                g.drawRect(1, 1, w - 4, h - 4);
              }
            });
        checkBoxDefaults.put("CheckBox[Selected].iconPainter",
            new Painter<JComponent>() {
              public void paint(Graphics2D g, JComponent c,
                  int w, int h) {
                g.setRenderingHint(
                    RenderingHints.KEY_ANTIALIASING,
                    RenderingHints.VALUE_ANTIALIAS_ON);
                g.setStroke(new BasicStroke(2f));
                g.setColor(Color.WHITE);
                g.fillRect(1, 1, w - 4, h - 4);
                g.setColor(Color.DARK_GRAY);
                g.drawPolyline(new int[] { 2, w / 3, w - 2 },
                    new int[] { h / 2 - 1, h - 4, 0 }, 3);
                g.setColor(Color.LIGHT_GRAY);
                g.drawRect(1, 1, w - 4, h - 4);
              }
            });
        JCheckBox checkBox = new JCheckBox("myCheckBox");
        panel.add(checkBox);
        checkBox.putClientProperty("Nimbus.Overrides", checkBoxDefaults);
        checkBox.putClientProperty("Nimbus.Overrides.InheritDefaults",
            false);
        // Add a normal themed slider for comparison
        JCheckBox normalCheckBox = new JCheckBox("normalCheckBox");
        panel.add(normalCheckBox);
        frame.getContentPane().add(panel, BorderLayout.CENTER);
        frame.pack();
        frame.setLocationRelativeTo(null);
        frame.setVisible(true);
      }
    });
  }
}