我正在寻找一种方法,在鼠标进入窗口后捕获或捕获鼠标,就像鼠标被困在虚拟机窗口中一样,直到用户按下CTRL ALT DEL或以其他方式释放鼠标.我如何在Java中实现这一目标?全屏不是一个选择.
编辑:
这是你的一些SSCCE.此代码会将鼠标捕获到窗口中.要离开你只需要在生成的框架内直接移动到关闭按钮.如果您注意到鼠标试图离开时它会自动返回(0,0).我需要知道的是如何让它回到它退出的坐标.我尝试使用getX()和getY()来代替(0,0),但是机器人不会在那里返回鼠标(我认为响应时间会变慢).我也让机器人将鼠标移回crosshair.x和crosshair.y但是如果用户在正确的时刻点击,这个(以及其他人)仍然允许鼠标逃脱.有什么想法吗?
主类:
import java.awt.AWTException;
import java.awt.Color;
import java.awt.Cursor;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionListener;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.image.BufferStrategy;
import java.awt.image.MemoryImageSource;
import java.awt.Point;
import java.awt.Robot;
import java.awt.Toolkit;
import javax.swing.JFrame;
public class Game extends JFrame implements MouseMotionListener, MouseListener{
private int windowWidth = 640;
private int windowHeight = 480;
private Crosshair crosshair;
public static void main(String[] args) {
new Game();
}
public Game() {
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.setSize(windowWidth, windowHeight);
this.setResizable(false);
this.setLocation(0,0);
this.setVisible(true);
this.createBufferStrategy(2);
addMouseMotionListener(this);
addMouseListener(this);
initGame();
while(true) {
long start = System.currentTimeMillis();
gameLoop();
while(System.currentTimeMillis()-start < 5) {
//empty while loop
}
}
}
private void initGame() {
hideCursor();
crosshair = new Crosshair (windowWidth/2, windowHeight/2);
}
private void gameLoop() {
//game logic
drawFrame();
}
private void drawFrame() {
BufferStrategy bf = this.getBufferStrategy();
Graphics g = (Graphics)bf.getDrawGraphics();
try {
g = bf.getDrawGraphics();
Color darkBlue = new Color(0x010040);
g.setColor(darkBlue);
g.fillRect(0, 0, windowWidth, windowHeight);
drawCrossHair(g);
} finally {
g.dispose();
}
bf.show();
Toolkit.getDefaultToolkit().sync();
}
private void drawCrossHair(Graphics g){
Color yellow = new Color (0xEDFF62);
g.setColor(yellow);
g.drawOval(crosshair.x, crosshair.y, 40, 40);
g.fillArc(crosshair.x + 10, crosshair.y + 21 , 20, 20, -45, -90);
g.fillArc(crosshair.x - 1, crosshair.y + 10, 20, 20, -135, -90);
g.fillArc(crosshair.x + 10, crosshair.y - 1, 20, 20, -225, -90);
g.fillArc(crosshair.x + 21, crosshair.y + 10, 20, 20, -315, -90);
}
@Override
public void mouseDragged(MouseEvent e) {
//empty method
}
@Override
public void mouseMoved(MouseEvent e) {
crosshair.x = e.getX();
crosshair.y = e.getY();
}
private void hideCursor() {
int[] pixels = new int[16 * 16];
Image image = Toolkit.getDefaultToolkit().createImage(new MemoryImageSource(16, 16, pixels, 0, 16));
Cursor transparentCursor = Toolkit.getDefaultToolkit().createCustomCursor(image, new Point(0, 0), "invisiblecursor");
getContentPane().setCursor(transparentCursor);
}
public void mouseExited(MouseEvent e) {
System.out.println("Event: " + e);
try {
Robot robot = new Robot();
robot.mouseMove(0, 0);// When I use (getX(),getY()) instead of (0,0) the robot will not move the mouse at all even though getX() and getY() are the coordinates I want the mouse to be moved to. Also the mouse can still escape, even when crosshair.x and crosshair.y are used as the coordinates. It seems that robot is too slow.
}
catch (AWTException ex) {
ex.printStackTrace();
}
}
public void mouseEntered(MouseEvent e){
}
public void mousePressed(MouseEvent e) {
}
public void mouseReleased(MouseEvent e) {
}
public void mouseClicked(MouseEvent e) {
}
}
另一类:
public class Crosshair{
public int x;
public int y;
public Crosshair(int x, int y) {
this.x = x;
this.y = y;
}
}
解决方法:
我想你可以使用Global Event Listener来监听帧的鼠标输入事件.然后在鼠标退出事件上,我想你可以使用机器人重置鼠标离开框架时的位置.