从popmenu操作事件获取右键单击位置

Question

我有一个java程序，当在JPanel中右键单击时打开弹出菜单。当任何弹出菜单项被单击时，我想打印触发终端中弹出菜单的右键单击的位置。我该怎么办？我如何从弹出操作事件中获取右键单击发生的位置？

如果弹出菜单位于JComponent中，代码将如何更改？

这是节目。

    import java.awt.EventQueue;
    import java.awt.event.*;
    import javax.swing.*;

    public class MenuTest
    {
        public static void main(String[] args)
        {
            EventQueue.invokeLater(new Runnable()
            {
                public void run()
                {
                    MenuFrame frame = new MenuFrame();
                    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                    frame.setVisible(true);
                }
            });
        }
    }

    class MenuFrame extends JFrame
    {
        public MenuFrame()
        {
            setTitle("MenuTest");
            setSize(300, 200);

            Action cutAction = new TestAction("Cut");
            Action copyAction = new TestAction("Copy");
            Action pasteAction = new TestAction("Paste");

            JPopupMenu popup = new JPopupMenu();
            popup.add(cutAction);
            popup.add(copyAction);
            popup.add(pasteAction);

            JPanel panel = new JPanel();
            panel.setComponentPopupMenu(popup);
            add(panel);

            panel.addMouseListener(new MouseAdapter() {});
        }

        class TestAction extends AbstractAction
        {
            public TestAction(String name)
            {
                super(name);
            }

            public void actionPerformed(ActionEvent event)
            {
                System.out.println("Right click happened at ?"); // How do I get right click location?          
            }
        }
    }

Answer 1

这是我要找的代码。谢谢希皮和加勒特的帮助。

    import java.awt.EventQueue;
    import java.awt.event.*;
    import javax.swing.*;
    import java.awt.geom.*;

    public class MenuTest
    {
        public static void main(String[] args)
        {
            EventQueue.invokeLater(new Runnable()
            {
                public void run()
                {
                    MenuFrame frame = new MenuFrame();
                    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                    frame.setVisible(true);
                }
            });
        }
    }

    class MenuFrame extends JFrame
    {
        public MenuFrame()
        {
            setTitle("MenuTest");
            setSize(300, 200);

            Action cutAction = new TestAction("Cut");
            Action copyAction = new TestAction("Copy");
            Action pasteAction = new TestAction("Paste");

            JPopupMenu popup = new JPopupMenu();
            popup.add(cutAction);
            popup.add(copyAction);
            popup.add(pasteAction);

            JPanel panel = new JPanel();
            panel.setComponentPopupMenu(popup);
            add(panel);

            panel.addMouseListener(new MouseAdapter() { 
                @Override
                public void mousePressed(MouseEvent e) {
                    clickLocation= e.getPoint();
                }
            });
        }

        class TestAction extends AbstractAction
        {
            public TestAction(String name)
            {
                super(name);
            }

            public void actionPerformed(ActionEvent event)
            {
                System.out.println("Right click happened at (" + clickLocation.getX()+"," + clickLocation.getY()+ ")");         
            }
        }

        private Point2D clickLocation;
    }

Answer 2

你在正确的轨道上。我个人更喜欢在MouseAdapter中手动显示它，这样我就可以在其他mouseevent上添加方法。为此，您可能需要删除面板。setComponentPopupMenu（弹出菜单）

panel.addMouseListener(new MouseAdapter() {

        @Override
        public void mouseClicked(MouseEvent arg0) {
            if (arg0.getButton() == MouseEvent.BUTTON3) { //Button3 is rightclick
                popup.show(panel, arg0.getX(), arg0.getY());
            }
        }
});

Answer 3

向按下的事件添加鼠标侦听器（单击的事件通过弹出窗口捕获）：

    panel.addMouseListener(new MouseAdapter() {
        @Override
        public void mousePressed(MouseEvent e) {
            clickLocation.setSize(e.getX(), e.getY());
        }
    });
    Action cutAction = new TestAction("Cut", clickLocation);
    Action copyAction = new TestAction("Copy", clickLocation);
    Action pasteAction = new TestAction("Paste", clickLocation);

打印尺寸：

    private Dimension clickLocation;

    public TestAction(String name, Dimension clickLocation) {
        super(name);
        this.clickLocation = clickLocation;
    }

    public void actionPerformed(ActionEvent event) {
        System.out.println("Right click happened at " + clickLocation);
    }