使用Java的鼠標點擊的視覺標記

Question

我正在使用Java創建屏幕錄像軟件。近80％的工作已經完成。現在我需要使用Java創建鼠標點擊的可視化標記。這樣我可以在回放視頻中看到鼠標點擊的位置。我怎樣才能做到這一點？

有沒有人有任何代碼示例？

Answer 1

很簡單。使用MouseListener的getX（）和getY（）方法讀取用戶點擊鼠標的點。在這點上，使用java.awt.Graphics類的drawOval（）方法繪製一個橢圓。嘗試下面的代碼，我相信你可以解決你的問題。

import java.awt.*; 
import java.awt.event.*; 

// no window closing code 
public class MouseXY extends Frame implements MouseListener, MouseMotionListener 
{ 
      int x , y; 
      String str =" "; 
      public MouseXY() 
      { 
       setSize(500, 500); 
       setVisible(true); 
       addMouseListener(this);    // register both the listeners with frame 
       addMouseMotionListener(this);        
      }           // override the 5 abstract methods of ML 
      public void mouseEntered(MouseEvent e) 
      { 
        setBackground(Color.green); 
        x = e.getX(); 
        y = e.getY(); 
        str ="Mouse Entered"; 
        repaint(); 
      }                 
      public void mouseExited(MouseEvent e)  
      { 
        setBackground(Color.red); 
        x = e.getX(); 
        y = e.getY(); 
        str ="Mouse Exited"; 
        repaint(); 
      } 
      public void mouseClicked(MouseEvent e) 
      { 
        setBackground(Color.gray); 
        x = e.getX(); 
        y = e.getY(); 
        str ="Mouse Clicked"; 
        repaint(); 
      } 
      public void mouseReleased(MouseEvent e) 
      { 
        setBackground(Color.blue); 
        x = e.getX(); 
        y = e.getY(); 
        str ="Mouse Released"; 
        repaint(); 
      } 
      public void mousePressed(MouseEvent e) 
      { 
       setBackground(Color.lightGray); 
       x = e.getX(); 
       y = e.getY(); 
       str ="Mouse pressed"; 
       repaint(); 
      }              // override the 2 abstract methods of MML 
      public void mouseDragged(MouseEvent e) 
      { 
       setBackground(Color.magenta); 
       x = e.getX(); 
       y = e.getY(); 
       str ="Mouse Dragged"; 
       repaint(); 
      } 
      public void mouseMoved(MouseEvent e) 
      { 
       setBackground(Color.yellow); 
       x = e.getX(); 
       y = e.getY(); 
       str = "Mouse Moved"; 
       repaint(); 
      } 
      public void paint(Graphics g) 
      { 
       g.setColor(Color.blue); 
       g.fillOval(x , y , 10 , 10); 
       g.drawString(x +", "+ y , x , y); 
       g.drawString(str , x , y -10);    // to draw the string above y coordinate 
    }        
    public static void main(String args[ ]) 
    { 
       new MouseXY(); 
    } 

}