JavaFX Chart设置数值显示

一、XYChart 

import javafx.application.Application;
import javafx.geometry.NodeOrientation;
import javafx.geometry.Side;
import javafx.scene.Scene;
import javafx.scene.chart.*;
import javafx.scene.control.Label;
import javafx.stage.Stage;


public class LineChartSample extends Application {

@Override
public void start(Stage stage) {
stage.setTitle("people");
final CategoryAxis xAxis = new CategoryAxis();
final NumberAxis yAxis = new NumberAxis();
xAxis.setLabel("Country");
final BarChart<String, Number> chart =
new BarChart<String, Number>(xAxis, yAxis);

chart.setTitle("people");

XYChart.Series series = new XYChart.Series();
series.setName("flag");
series.getData().add(new XYChart.Data("China", 14.7));
series.getData().add(new XYChart.Data("America", 2.5));
series.getData().add(new XYChart.Data("India", 14));
XYChart.Data data = new XYChart.Data("Russa", 2);
data.setNode(new Label("2"));
series.getData().add(data);

Scene scene = new Scene(chart, 800, 600);
chart.getData().addAll(series);

stage.setScene(scene);
stage.show();
}


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

二、PieChart

 

import javafx.application.Application;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.control.Label;
import javafx.scene.input.MouseEvent;
import javafx.scene.paint.Color;
import javafx.stage.Stage;
import javafx.scene.chart.*;
import javafx.scene.Group;

public class PieChartSample extends Application {

@Override public void start(Stage stage) {
Scene scene = new Scene(new Group());
stage.setTitle("Imported Fruits");
stage.setWidth(500);
stage.setHeight(500);

ObservableList<PieChart.Data> pieChartData =
FXCollections.observableArrayList(
new PieChart.Data("Grapefruit", 13),
new PieChart.Data("Oranges", 25),
new PieChart.Data("Plums", 10),
new PieChart.Data("Pears", 22),
new PieChart.Data("Apples", 30)
);

final PieChart chart = new PieChart(pieChartData);
chart.setTitle("Imported Fruits");

final Label caption = new Label("");
caption.setTextFill(Color.DARKORANGE);
caption.setStyle("-fx-font: 24 arial;");

for (final PieChart.Data data : chart.getData()) {
data.getNode().addEventHandler(MouseEvent.MOUSE_PRESSED,
new EventHandler<MouseEvent>() {
@Override public void handle(MouseEvent e) {
caption.setTranslateX(e.getSceneX());
caption.setTranslateY(e.getSceneY());
caption.setText(String.valueOf(data.getPieValue()) + "%");
}
});
}
((Group) scene.getRoot()).getChildren().addAll(chart,caption);
stage.setScene(scene);
stage.show();
}

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