Java Swing实现类似QQ的停靠在桌面边缘时自动隐藏详解编程语言

Java Swing实现类似QQ的停靠在桌面边缘时自动隐藏

import java.awt.Point; 
import java.awt.Rectangle; 
import java.awt.event.ActionEvent; 
import java.awt.event.ActionListener; 
import java.awt.event.MouseAdapter; 
import java.awt.event.MouseEvent; 
import java.awt.event.MouseMotionAdapter; 
 
import javax.swing.JFrame; 
import javax.swing.Timer; 
 
public class HideFrame extends JFrame implements ActionListener{ 
    private Rectangle rect; 
    private int frameLeft;// 窗体离屏幕左边的距离 
    private int frameRight;// 窗体离屏幕右边的距离； 
    private int frameTop;// 窗体离屏幕顶部的距离 
    private int frameWidth; // 窗体的宽 
    private int frameHeight;    // 窗体的高 
 
    private int screenXX;// 屏幕的宽度； 
    private Point point;    // 鼠标在窗体的位置 
 
    private Timer timer = new Timer(10, this); 
    private int xx, yy; 
    private boolean isDraging = false; 
 
    public HideFrame(){ 
        timer.start(); 
        setTitle("窗体在屏幕边缘隐藏演示"); 
        setSize(400, 300); 
        setUndecorated(true); 
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
        setAlwaysOnTop(true); 
        addMouseListener(new MouseAdapter() { 
            public void mousePressed(MouseEvent e) { 
                isDraging = true; 
                xx = e.getX(); 
                yy = e.getY(); 
            } 
 
            public void mouseReleased(MouseEvent e) { 
                isDraging = false; 
            } 
        }); 
        addMouseMotionListener(new MouseMotionAdapter() { 
            public void mouseDragged(MouseEvent e) { 
                if (isDraging) { 
                    int left = getLocation().x; 
                    int top = getLocation().y; 
                    setLocation(left + e.getX() - xx, top + e.getY() - yy); 
                    repaint(); 
                } 
            } 
        }); 
        setVisible(true); 
    } 
    @Override 
    public void actionPerformed(ActionEvent arg0) { 
        frameLeft = getLocationOnScreen().x; 
        frameTop = getLocationOnScreen().y; 
        frameWidth = getWidth(); 
        frameHeight = getHeight(); 
        screenXX = java.awt.Toolkit.getDefaultToolkit().getScreenSize().width; 
        frameRight =screenXX- frameLeft - frameWidth; 
 
        // 获取窗体的轮廓 
        rect = new Rectangle(0, 0, frameWidth, frameHeight); 
        // 获取鼠标在窗体的位置 
        point =getMousePosition(); 
 
        if (frameLeft < 0 && isPtInRect(rect, point)) { 
            setLocation(0, frameTop); // 隐藏在左边，鼠标指到后显示窗体； 
        } else if (frameLeft > -5 && frameLeft < 5 && !(isPtInRect(rect, point))) { 
            setLocation(frameLeft - frameWidth + 1, frameTop); // 窗体移到左边边缘隐藏到左边； 
        } else if ((frameTop < 0 && frameLeft < 0) && isPtInRect(rect, point)) {// 窗体在左上角； 
            setLocation(0, 0);// 窗口隐藏了，鼠标指到他，就显示出来； 
        } else if ((frameTop > -5 && frameTop < 5) && (frameLeft > -5 && frameLeft < 5) && !(isPtInRect(rect, point))) { 
            // 当窗体的上边框与屏幕的顶端的距离小于5时 ， 
            // 并且鼠标不再窗体上将窗体隐藏到屏幕的顶端 
            setLocation(frameLeft - frameWidth + 1, 1); 
        } else if ((frameTop < 0) && isPtInRect(rect, point)) { 
            setLocation(frameLeft, 0);// 窗口隐藏了，鼠标指到他，就显示出来； 
        } else if (frameTop > -5 && frameTop < 5 && !(isPtInRect(rect, point))) { 
            // 当窗体的上边框与屏幕的顶端的距离小于5时 ， 
            // 并且鼠标不再窗体上将窗体隐藏到屏幕的顶端 
            setLocation(frameLeft, 1 - frameHeight); 
        } else if (frameRight < 0 && isPtInRect(rect, point)) { 
            setLocation(screenXX - frameWidth + 1, frameTop);// 隐藏在右边，鼠标指到后显示； 
        } else if (frameRight > -5 && frameRight < 5 && !(isPtInRect(rect, point))) { 
            setLocation(screenXX - 1, frameTop); // 窗体移到屏幕右边边缘隐藏到右边； 
        } else if (frameRight < 0 && frameTop < 0 && isPtInRect(rect, point)) {// 窗体在右上角； 
            setLocation(screenXX - frameWidth + 1, 0);// 隐藏在右边，鼠标指到后显示； 
        } else if ((frameRight > -5 && frameRight < 5) && (frameTop > -5 && frameTop < 5) && !(isPtInRect(rect, point))) { 
            setLocation(screenXX - 1, 1); // 窗体移到屏幕右边边缘隐藏到右边； 
        } 
    } 
 
    /** 
     * 检测是否在矩形框内 
     * @param rect 
     * @param point 
     * @return 
     */ 
    public boolean isPtInRect(Rectangle rect, Point point) { 
        if (rect != null && point != null) { 
            int x0 = rect.x; 
            int y0 = rect.y; 
            int x1 = rect.width; 
            int y1 = rect.height; 
            int x = point.x; 
            int y = point.y; 
 
            return x >= x0 && x < x1 && y >= y0 && y < y1; 
        } 
        return false; 
    } 
    public static void main(String[] args){ 
        HideFrame frame = new HideFrame(); 
    } 
}