一。代码


package org.bruce.vertices.extra.experiments;

/* * 
 * 淡入淡出窗口，淡出时，如果鼠标移进去了，则中止渐变。
 */
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import javax.swing.*;

public class GCFrame {
  protected static Timer timer;
  static JFrame jf;
  static float value = 1.0f;
  boolean isClicked = false;

  public GCFrame() {
    jf = new JFrame();
    JPanel jp = new JPanel();
    JButton jb = new JButton("淡出");
    jp.add(jb);
    jf.add(jp);
    jf.setSize(320, 240);
    jf.setVisible(true);
    // 添加按钮的监听事件
    timer = new Timer(100, new Tim1());
    jb.addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent e) {
        timer.start();
        isClicked = true;
        // 当鼠标移入窗口时，中止线程,当点击了“淡出”按钮后添加事件监听代码
        if (isClicked == true) {
          jf.addMouseListener(new MouseAdapter() {
            public void mouseEntered(MouseEvent e) {
              timer.stop();
              value = 1.0f;
              SwingUtilities.invokeLater(new Runnable() {
                public void run() {
                  com.sun.awt.AWTUtilities.setWindowOpacity(jf, value);
                }
              });
            }

            public void mouseExited(MouseEvent e) {
              timer.start();
            }
          });
        }
      }
    });
  }

  static class Tim0 implements ActionListener {// 控制窗口打开时透明度的渐变
    public void actionPerformed(ActionEvent e) {
    }
  }

  static class Tim1 implements ActionListener {// 控制窗口关闭时透明度的渐变
    public void actionPerformed(ActionEvent e) {
      value -= 0.02f;
      if (value >= 0.02f) {
        SwingUtilities.invokeLater(new Runnable() {
          public void run() {
            com.sun.awt.AWTUtilities.setWindowOpacity(jf, value);
          }
        });
      } else {
        System.exit(0);
      }
    }
  }

  public static void main(String[] args) {
    new GCFrame();
  }
}



二。效果图

Java实现淡入淡出窗口_java