Java Swing component custom CheckBox example, swingcheckbox

Java Swing component custom CheckBox example, swingcheckbox

This example describes how to customize the CheckBox for Java Swing components. We will share this with you for your reference. The details are as follows:

Let's take a look at the running effect:

The Code is as follows:

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);      }    });  }}