JavaFX线形图的点操作

import javafx.application.Application;
import javafx.collections.ObservableList;
import javafx.scene.Scene;
import javafx.scene.chart.LineChart;
import javafx.scene.chart.NumberAxis;
import javafx.scene.chart.XYChart;
import javafx.scene.control.Label;
import javafx.scene.input.MouseEvent;
import javafx.scene.layout.StackPane;
import javafx.stage.Stage;

public class LineChartExample extends Application {

    @Override
    public void start(Stage primaryStage) {
        // 创建x轴和y轴
        NumberAxis xAxis = new NumberAxis();
        NumberAxis yAxis = new NumberAxis();

        // 创建线形图
        LineChart<Number, Number> lineChart = new LineChart<>(xAxis, yAxis);

        // 创建数据系列
        XYChart.Series<Number, Number> series = new XYChart.Series<>();
        series.setName("Data Series");

        // 添加数据点
        series.getData().add(new XYChart.Data<>(1, 10));
        series.getData().add(new XYChart.Data<>(2, 20));
        series.getData().add(new XYChart.Data<>(3, 15));
        series.getData().add(new XYChart.Data<>(4, 25));

        // 添加数据系列到线形图
        lineChart.getData().add(series);

        // 添加鼠标事件监听器
        lineChart.setOnMouseClicked((MouseEvent event) -> {
            // 获取点击的数据点
            ObservableList<XYChart.Data<Number, Number>> dataPoints = series.getData();
            for (XYChart.Data<Number, Number> dataPoint : dataPoints) {
                if (dataPoint.getNode().isHover()) {
                    // 点击的数据点
                    System.out.println("Clicked on data point: " + dataPoint.getXValue() + ", " + dataPoint.getYValue());
                }
            }
        });

        // 创建根节点并添加线形图
        StackPane root = new StackPane();
        root.getChildren().add(lineChart);

        // 创建场景并显示舞台
        Scene scene = new Scene(root, 400, 300);
        primaryStage.setScene(scene);
        primaryStage.show();
    }

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