4.模拟QQ隐藏窗体

 

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();

}

}