Question

我目前正在评估使用SwingNode将当前的Swing应用程序转换为JavaFX 8是否可行，然后慢慢将所有内容更改为JavaFX组件。我偶然发现了两个问题，这可能是JavaFX 8中的问题，但我无法确定。

将内容添加到SwingNode后，不会绘制Javafx菜单正确（大部分时间），导致黑条

使JScrollBars不透明似乎不起作用

import java.awt.Color;
import java.awt.GridLayout;

import javafx.application.Application;
import javafx.embed.swing.SwingNode;
import javafx.scene.Scene;
import javafx.scene.control.Menu;
import javafx.scene.control.MenuBar;
import javafx.scene.layout.StackPane;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;

import javax.swing.JPanel;
import javax.swing.JScrollPane;


public class Test extends Application {    

    @Override
    public void start(Stage stage) throws Exception {
        stage.setMaximized(true);

        VBox vbox = new VBox();
        MenuBar menuBar = new MenuBar();
        menuBar.getMenus().add(new Menu("bla"));
        vbox.getChildren().add(menuBar);

        StackPane mainPane = new StackPane();        
        mainPane.setPrefSize(9999, 9999); //Better way to ensure all space used?
        vbox.getChildren().add(mainPane);
        vbox.setVisible(true);

        Scene scene = new Scene(vbox, 9999, 9999); //Better way to ensure all space used?
        stage.setScene(scene);

        SwingNode swingNode = new SwingNode();
        mainPane.getChildren().add(swingNode);

        JPanel jPanel = new JPanel();
        swingNode.setContent(jPanel); //Seems to interfere with painting of menu

        jPanel.setBackground(Color.WHITE);
        jPanel.setLayout(new GridLayout(2, 1));
        jPanel.add(new JPanel());

        JPanel nonOpaquePanel = new JPanel();
        nonOpaquePanel.setOpaque(false);
        JScrollPane scrollPane = new JScrollPane(nonOpaquePanel);
        scrollPane.setOpaque(false);
        scrollPane.getViewport().setOpaque(false); //Black background -> Bug?
        jPanel.add(scrollPane);

        stage.show();
    }

    /**
     * Main method launching the application.
     */
    public static void main(String[] args) {
        launch(args);
    }
}

Executable jar

编辑：我编辑了我的示例，使用EDT创建Swing组件。这并没有改变任何事情。或者我做错了什么？

import java.awt.Color;
import java.awt.Dimension;
import java.awt.GridLayout;

import javafx.application.Application;
import javafx.application.Platform;
import javafx.embed.swing.SwingNode;
import javafx.scene.Scene;
import javafx.scene.control.Menu;
import javafx.scene.control.MenuBar;
import javafx.scene.layout.StackPane;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;

import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.SwingUtilities;


public class Test extends Application {
    private JPanel jPanel = null;

    @Override
    public void start(Stage stage) throws Exception {
        if (Platform.isFxApplicationThread()) { // all of this happens on the fx application thread
            stage.setMaximized(true);

            VBox vbox = new VBox();
            MenuBar menuBar = new MenuBar();
            menuBar.getMenus().add(new Menu("bla"));
            vbox.getChildren().add(menuBar);

            StackPane mainPane = new StackPane();        
            mainPane.setPrefSize(9999, 9999); //Better way to ensure all space used?
            vbox.getChildren().add(mainPane);
            vbox.setVisible(true);

            Scene scene = new Scene(vbox, 9999, 9999); //Better way to ensure all space used?
            stage.setScene(scene);

            SwingNode swingNode = new SwingNode();
            mainPane.getChildren().add(swingNode);                    

            SwingUtilities.invokeLater(new Runnable() { //Use EDT to build swing components              
                @Override
                public void run() {
                    jPanel = new JPanel();

                    jPanel.setBackground(Color.WHITE);
                    jPanel.setLayout(new GridLayout(2, 1));
                    jPanel.add(new JPanel());

                    JLabel nonOpaquePanel = new JLabel("Bla");
                    nonOpaquePanel.setPreferredSize(new Dimension(5000, 5000));
                    nonOpaquePanel.setOpaque(false);
                    JScrollPane scrollPane = new JScrollPane(nonOpaquePanel);
                    scrollPane.setOpaque(false);
                    scrollPane.getViewport().setOpaque(false); //Black background -> Bug?
                    jPanel.add(scrollPane);
                }
            });

            Thread.sleep(1000); //terrible way to wait for the EDT, I know
            swingNode.setContent(jPanel); //Seems to interfere with painting of menu            
            stage.show();

            SwingUtilities.invokeLater(new Runnable() { //I am pretty sure this isn't necessary, but whatever                       
                @Override
                public void run() {
                    jPanel.repaint();    
                }
            });
        }
    }

    /**
     * Main method launching the application.
     */
    public static void main(String[] args) {
        launch(args);
    }
}

Answer 1

在进行更新调用时，请尝试将更新代码包装在此处。这段代码在其他项目之前帮助了我。

Platform.runLater(new Runnable() {
            @Override
            public void run() {
                // Update the text node with calculated results
            }
       });

Source

Answer 2

一定是JavaFX中的一个错误，这个例子现在工作正常。

JavaFX 8摆动兼容性

2 个答案: