如何在 Swing 应用程序中捕获并处理 JavaFX TouchEvent？

我开发了一个 Swing 应用程序，现在需要在其中实现自定义的多点触摸手势。

经过一番研究，最简单的方法似乎是使用 JavaFX，因为它可以嵌入到 Swing 中，并为触摸屏上的每个手指单独提供事件。然后我尝试根据以下示例实现触摸处理：

http://docs.oracle.com/javafx/2/swing/swing-fx-interoperability.htm http://docs.oracle.com/javafx/2/swing/swing-fx-interoperability.htm

http://docs.oracle.com/javafx/2/events/touch_events.htm http://docs.oracle.com/javafx/2/events/touch_events.htm

我决定在 JPanel 之上创建一个透明的 JFXPanel，捕获所有鼠标和触摸事件。它非常适合 JavaFX 鼠标事件，但我没有收到任何触摸事件。

我在不同的可触摸 Windows 7 和 Windows 8 设备上测试了我的应用程序。我目前使用的是 Java JDK 1.8.0_45。

所以我的问题是为什么我没有收到任何触摸事件？

我将问题简化为以下两类：

图形用户界面类：

import javafx.application.Platform;
import javafx.embed.swing.JFXPanel;
import javafx.event.EventHandler;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.input.MouseEvent;
import javafx.scene.paint.Color;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;


public class TestWindow extends JFrame {

    private static final long serialVersionUID = 1L;
    private static final JFXPanel jfxPanel = new JFXPanel();
    private static Scene jfxScene;
    private static TestController controller;
    private boolean enableJFXPanel;

    /**
     * Create the Frame
     * @param tc The Application's controller
     */
    public TestWindow(TestController tc) {

        this.setBounds(200,200,400,400);
        this.setResizable(false);
        this.setTitle("JavaFX in Swing Test");
        getContentPane().setLayout(null);

        controller = tc;

        // Create the swing panel
        JPanel jPanel = new JPanel();
        jPanel.setBounds(0, 0, this.getWidth(), this.getHeight());
        jPanel.addMouseListener(controller);

        // Create the button
        JButton button = new JButton("show / hide JavaFX panel");
        button.setBounds((jPanel.getWidth()/2)-100, (jPanel.getHeight()/2)-25, 200, 50);
        button.addActionListener(controller);
        jPanel.add(button);

        // Create the JavaFX panel
        jfxPanel.setBounds(0, 0, 0, 0);
        enableJFXPanel = false;     
        jPanel.add(jfxPanel);

        getContentPane().add(jPanel);

        SwingUtilities.invokeLater(new Runnable() {
            @Override
            public void run() {
                initAndShowGUI();
            }
        });

        this.setVisible(true);
    }

    /**
     * Initialize and Show JavaFX
     */
    private static void initAndShowGUI() {
        Platform.runLater(new Runnable() {
            @Override
            public void run() {
                initFX();
            }
        });
    }

    /**
     * Initialize the JavaFX {@code Scene} and set touch controller.
     */
    private static void initFX() {
        Group  jfx_root  =  new  Group();
        jfxScene  =  new  Scene(jfx_root);
        jfxScene.setFill(Color.AQUA);

        // Register touch event listener (DOESN'T WORK !!!)
        jfxScene.setOnTouchMoved(controller);
        jfxScene.setOnTouchPressed(controller);
        jfxScene.setOnTouchReleased(controller);
        jfxScene.setOnTouchStationary(controller);

        // Test catching JavaFX mouse events (WORKS PERFECTLY !!!)
        jfxScene.setOnMouseClicked(new EventHandler<MouseEvent>(){
            @Override
            public void handle(MouseEvent event) {
                System.out.println("MOUSE CLICKED ON JAVA FX PANEL");               
            }
        });

        jfxPanel.setScene(jfxScene);
    }

    /**
     * Show / hide the JavaFX panel
     */
    public void switchJFXPanel() {
        if (enableJFXPanel) {
            jfxPanel.setBounds(0, 0, 0, 0);
            enableJFXPanel = false;
        } else {
            jfxPanel.setBounds(0, 0, this.getWidth(), this.getHeight());
            enableJFXPanel = true;
        }
    }
}

控制器类：

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;

import javafx.scene.input.TouchEvent;

public class TestController implements MouseListener, ActionListener, javafx.event.EventHandler<TouchEvent> {

    private TestWindow testWindow;

    public TestController() {
        testWindow = new TestWindow(this);
    }

    @Override
    public void mouseClicked(MouseEvent e) {
        System.out.println("MOUSE CLICKED ON JPANEL");
    }

    @Override
    public void mousePressed(MouseEvent e) {}
    @Override
    public void mouseReleased(MouseEvent e) {}
    @Override
    public void mouseEntered(MouseEvent e) {}
    @Override
    public void mouseExited(MouseEvent e) {}

    @Override
    public void actionPerformed(ActionEvent e) {
        testWindow.switchJFXPanel();
    }

    @Override
    public void handle(TouchEvent event) {
        // OCCURING JAVA FX TOUCH EVENT SHALL BE WRITTEN TO CONSOLE
        System.out.println("JAVA FX TOUCH EVENT: " + event.toString());     
    }

    public static void main(String arg[]) {
        TestController test = new TestController();
    }
}

谢谢你的帮助。