Java Swing实现的定制TextField功能示例

本文实例讲述了Java Swing实现的定制TextField功能。分享给大家供大家参考，具体如下：

先来看看运行效果：

具体代码如下：

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.Insets;
import java.awt.RenderingHints;
import java.util.Map;
import javax.swing.BorderFactory;
import javax.swing.JComponent;
import javax.swing.Jframe;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.Painter;
import javax.swing.SwingUtilities;
import javax.swing.UIDefaults;
import javax.swing.UIManager;
import javax.swing.WindowConstants;
public class TextFieldSkinDemo {
  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 entry : UIManager
     .getLookAndFeelDefaults().entrySet()) {
   if ((entry.getKey().toString()).startsWith("TextField")) {
     System.out.println(entry.getKey() + " = "
  + entry.getValue());
   }
 }
 Jframe frame = new Jframe("www.jb51.net - TextField 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 textFieldDefaults = new UIDefaults();
 textFieldDefaults.put("TextField.contentMargins", new Insets(6,
     6, 6, 6));
 textFieldDefaults.put("TextField[Selected].textForeground",
     Color.WHITE);
 textFieldDefaults.put("TextField.backgroundPainter",
     new Painter() {
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.fillRoundRect(0, 0, w - 2, h - 2, 8, 8);
}
     });
 textFieldDefaults.put("TextField.borderPainter",
     new Painter() {
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.LIGHT_GRAY);
  g.drawRoundRect(0, 0, w - 2, h - 2, 8, 8);
}
     });
 JTextField textField = new JTextField(15);
 panel.add(textField);
 textField.putClientProperty("Nimbus.Overrides",
     textFieldDefaults);
 textField.putClientProperty("Nimbus.Overrides.InheritDefaults",
     false);
 // Add a normal themed slider for comparison
 JTextField normalTextField = new JTextField(15);
 panel.add(normalTextField);
 frame.getContentPane().add(panel, BorderLayout.CENTER);
 frame.pack();
 frame.setLocationRelativeTo(null);
 frame.setVisible(true);
      }
    });
  }
}

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