java - 我可以在 JFrame 中嵌入 JavaFX 应用程序类吗？

Question

我正在制作一个“气象站”应用程序，并且正在使用 JavaFX 来绘制流图。我想知道是否可以将图形与我希望显示的其他组件一起放置在 JFrame 中，如果可以，如何放置。

我想要在 JFrame 中的类

public class JavaFXApplication6 extends Application
{

    private XYChart.Series<Number, Number> hourDataSeries;
    private XYChart.Series<Number, Number> minuteDataSeries;
    private NumberAxis xAxis;
    private Timeline animation;

    // more variables handling data manipulation based on time passing

    private void init(Stage primaryStage)
    {
        Group root = new Group();
        primaryStage.setScene(new Scene(root));
        root.getChildren().add(createChart());

        // create timeline to add new data every 60th of second
        animation = new Timeline();
        animation.getKeyFrames().add(new KeyFrame(Duration.millis(1000 / 60), 
                                     new EventHandler<ActionEvent>()
                                     {
                                        @Override
                                        public void handle(ActionEvent actionEvent)
                                        {
                                            // 6 minutes data per frame
                                            for (int count = 0; count < 6; count++)
                                            {
                                                nextTime();
                                                plotTime();
                                            }
                                        }
                                     }));

        animation.setCycleCount(Animation.INDEFINITE);
    }

    protected LineChart<Number, Number> createChart()
    {

        // Code to setup chart and starting data and return it - substitute
        // with:
        return new LineChart(new NumberAxis(0, 24, 3), new NumberAxis(0, 100, 10));
    }

    private void nextTime()
    {
        // Code to advance time variables
    }

    private void plotTime() {
        // update data series' based on time passing
    }

    public void play()
    {
        animation.play();
    }

    @Override
    public void stop()
    {
        animation.pause();
    }

    @Override
    public void start(Stage primaryStage) throws Exception
    {
        init(primaryStage);
        primaryStage.show();
        play();
    }

    public static void main(String[] args)
    {
        launch(args);
    }
}

GUI 类是标准 swing JFrame

Answer 1

您可以通过将 Scene 放置在 JFXPanel 中来将其包含在 Swing 应用程序中。 This tutorial有更多详细信息。

您不能将 Application 子类直接嵌入到 Swing 应用程序中； Application 子类是启动类；它代表实际的应用程序，而不是 UI 元素。因此，您需要稍微重构您的 JavaFX 代码才能使其正常工作。

具体来说，我会定义一个类，例如:

public class AnimatedChart
{

    private XYChart.Series<Number, Number> hourDataSeries;
    private XYChart.Series<Number, Number> minuteDataSeries;
    private NumberAxis xAxis;
    private Timeline animation;

    private Group view ;

    // more variables handling data manipulation based on time passing

    public AnimatedChart()
    {
        view = new Group();
        primaryStage.setScene(new Scene(view));
        view.getChildren().add(createChart());

        // create timeline to add new data every 60th of second
        animation = new Timeline();
        animation.getKeyFrames().add(new KeyFrame(Duration.millis(1000 / 60), 
                                     new EventHandler<ActionEvent>()
                                     {
                                        @Override
                                        public void handle(ActionEvent actionEvent)
                                        {
                                            // 6 minutes data per frame
                                            for (int count = 0; count < 6; count++)
                                            {
                                                nextTime();
                                                plotTime();
                                            }
                                        }
                                     }));

        animation.setCycleCount(Animation.INDEFINITE);
    }

    public Parent getView() {
        return view ;
    }

    protected LineChart<Number, Number> createChart()
    {

        // Code to setup chart and starting data and return it - substitute
        // with:
        return new LineChart(new NumberAxis(0, 24, 3), new NumberAxis(0, 100, 10));
    }

    private void nextTime()
    {
        // Code to advance time variables
    }

    private void plotTime() {
        // update data series' based on time passing
    }

    public void play()
    {
        animation.play();
    }

    public void pause() {
        animation.pause();
    }
}

然后你可以定义一个Application类:

public void AnimatedChartApp extends Application {

    private AnimatedChart animatedChart ;

    @Override
    public void start(Stage primaryStage) {
        animatedChart = new AnimatedChart();
        Scene scene = new Scene(animatedChart.getView());
        primaryStage.setScene(scene);
        animatedChart.play();
        primaryStage.show();
    }

    @Override
    public void stop() {
        animatedChart.stop();
    }
}

或者您可以在 Swing 应用程序中使用它:

JFrame frame = new JFrame();
JFXPanel jfxPanel = new JFXPanel();
frame.add(jfxPanel);
frame.setVisible(true);
Platform.runLater(() -> {
    AnimatedChart animatedChart = new AnimatedChart();
    Scene scene = new Scene(animatedChart.getView());
    jfxPanel.setScene(scene);
    animatedChart.play();
});