package com.jebysun.test.globalhotkey;
 
 import java.awt.Color;
 import java.awt.Cursor;
 import java.awt.Point;
 import java.awt.event.MouseEvent;
 
 import javax.swing.JLabel;
 import javax.swing.JWindow;
 import javax.swing.event.MouseInputListener;
 
 /**
 * 自定義程序窗口，鼠標(biāo)可拖拽移動(dòng)其位置。
 * @author Jeby Sun
 *
 */
 public class MyFrame extends JWindow {
 
   private static final long serialVersionUID = 1L;
   
   JLabel titleLbl;
   
   public MyFrame() {
     //設(shè)置背景顏色不能直接調(diào)用其setBackground方法，而要設(shè)置其ContentPane的背景顏色。
     this.getContentPane().setBackground(new Color(0x99FF66));
     this.setBounds(100,100,600,400);
     this.setLayout(null);
     
     titleLbl = new JLabel(" 自定義窗口標(biāo)題欄");
     titleLbl.setOpaque(true);
     titleLbl.setBackground(new Color(0x66CC00));
     titleLbl.setBounds(0, 0, 600, 30);
     this.add(titleLbl);
     //鼠標(biāo)事件處理類
     MouseEventListener mouseListener = new MouseEventListener(this);
     titleLbl.addMouseListener(mouseListener);
     titleLbl.addMouseMotionListener(mouseListener);
     
     this.setVisible(true);
   }
 
   /**
   * 鼠標(biāo)事件處理
   * @author Jeby Sun
   *
   */
   class MouseEventListener implements MouseInputListener {
     
     Point origin;
     //鼠標(biāo)拖拽想要移動(dòng)的目標(biāo)組件
     MyFrame frame;
     
     public MouseEventListener(MyFrame frame) {
       this.frame = frame;
       origin = new Point();
     }
     
     @Override
     public void mouseClicked(MouseEvent e) {}
 
     /**
     * 記錄鼠標(biāo)按下時(shí)的點(diǎn)
     */
     @Override
     public void mousePressed(MouseEvent e) {
       origin.x = e.getX(); 
       origin.y = e.getY();
     }
 
     @Override
     public void mouseReleased(MouseEvent e) {}
 
     /**
     * 鼠標(biāo)移進(jìn)標(biāo)題欄時(shí)，設(shè)置鼠標(biāo)圖標(biāo)為移動(dòng)圖標(biāo)
     */
     @Override
     public void mouseEntered(MouseEvent e) {
       this.frame.setCursor(Cursor.getPredefinedCursor(Cursor.MOVE_CURSOR));
     }
     
     /**
     * 鼠標(biāo)移出標(biāo)題欄時(shí)，設(shè)置鼠標(biāo)圖標(biāo)為默認(rèn)指針
     */
     @Override
     public void mouseExited(MouseEvent e) {
       this.frame.setCursor(Cursor.getPredefinedCursor(Cursor.DEFAULT_CURSOR));
     }
 
     /**
     * 鼠標(biāo)在標(biāo)題欄拖拽時(shí)，設(shè)置窗口的坐標(biāo)位置
     * 窗口新的坐標(biāo)位置 = 移動(dòng)前坐標(biāo)位置+（鼠標(biāo)指針當(dāng)前坐標(biāo)-鼠標(biāo)按下時(shí)指針的位置）
     */
     @Override
     public void mouseDragged(MouseEvent e) {
       Point p = this.frame.getLocation();
       this.frame.setLocation(
         p.x + (e.getX() - origin.x), 
         p.y + (e.getY() - origin.y)); 
     }
 
     @Override
     public void mouseMoved(MouseEvent e) {}
     
   }
   
   public static void main(String[] args) {
     new MyFrame();
   }
 
 }