java漂浮窗口源代码

package xuanfuchuang; /** * @author eggno8 * @version 1.0 */ import java.awt.Toolkit; import java.awt.GridLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.*; import javax.swing.Timer; //======================================== //FlyFly:漂浮flygarlic //======================================== public class FlyFly extends JFrame implements java.awt.event.ActionListener { private JButton jb = new JButton(); private Timer tm; //-----最大点击次数，消失 private static int hp = 5; //-----最大坐标 private static int W; private static int H; //-----当前坐标 private static int xp; private static int yp; //-----当前移动步径 private static int xstep = 3; private static int ystep = 3; //-----最大移动步径（随机范围，可以设置） private static int maxxstep = 19; private static int maxystep = 17; public FlyFly(int w, int h) { W = (int) Toolkit.getDefaultToolkit().getScreenSize().getWidth() - w; H = (int) Toolkit.getDefaultToolkit().getScreenSize().getHeight() - h; System.out.println(W + ":" + H); this.setSize(w, h); xp = W / 2; yp = H / 2; this.setLocation(xp, yp); this.setAlwaysOnTop(true); //窗体总在最前面 this.setResizable(false); //窗体不能改变大小 this.setUndecorated(true); //窗体不要边框 this.getContentPane().setLayout(new GridLayout(1, 1)); this.getContentPane().add(jb); jb.setIcon(new ImageIcon("ds.jpg")); //同目录下的一张jpg图片，设置JButton的图片效果 jb.addActionListener(this); //！这个不能忘记，挂载ActionListener接口。 tm = new Timer(100, this); //！Timer是需要依附在一个实现了ActionListener接口的对象上。（单位毫秒，可以设置） tm.start(); //！Timer需要打开 this.setVisible(true); } public void changeDirection() { //如果到达边沿要转弯 if ( (xp <= 0 && xstep < 0) || (xp >= W && xstep > 0)) { xstep = -xstep; } if ( (yp <= 0 && ystep < 0) || (yp >= H && ystep > 0)) { ystep = -ystep; } this.setLocation(xp, yp); //位置重新设置 } public void actionPerformed(ActionEvent e) { //坐标按照当前状态移动 xp += xstep; yp += ystep; if (e.getSource() == jb) { //点击造成随机生成移动状态 hp--; xp = (int) System.currentTimeMillis() % W; yp = (int) System.currentTimeMillis() % H; xstep = (int) System.currentTimeMillis() % (2 * maxxstep + 1) - maxxstep; ystep = (int) System.currentTimeMillis() % (2 * maxystep + 1) - maxystep; } changeDirection(); //刷新显示状态 if (hp <= 0) { System.exit(0); } } public static void main(String[] _s) { FlyFly ff = new FlyFly(64, 64); } }