Java fx - 如何从图表饼图中获取点击鼠标事件

我目前正在使用饼图和java fx场景生成器1.1开发Java fx。Java fx - 如何从图表饼图中获取点击鼠标事件

我的问题是：

如何从我的饼图的鼠标点击事件？

这里是我的代码：

screen.fxml

<?xml version="1.0" encoding="UTF-8"?> 

<?import java.lang.*?> 
<?import java.util.*?> 
<?import javafx.scene.*?> 
<?import javafx.scene.chart.*?> 
<?import javafx.scene.control.*?> 
<?import javafx.scene.layout.*?> 
<?import javafx.scene.text.*?>

- >

ScreenController 

package screensframework; 

import java.awt.Button; 
import java.io.File; 
import java.io.IOException; 
import java.net.URL; 
import java.util.ResourceBundle; 
import javafx.collections.FXCollections; 
import javafx.collections.ObservableList; 
import javafx.event.ActionEvent; 
import javafx.event.EventHandler; 
import javafx.fxml.FXML; 
import javafx.fxml.FXMLLoader; 
import javafx.fxml.Initializable; 
import javafx.scene.chart.PieChart; 
import javafx.scene.input.MouseEvent; 
import javafx.scene.layout.AnchorPane; 
import javafx.scene.layout.GridPane; 
import javafx.scene.text.Text; 

/** 
* FXML Controller class 
* 
* @author Kenny 
*/ 
public class Screen2Controller implements Initializable , ControlledScreen { 

ScreensController myController; 
/** 
* Initializes the controller class. 
*/ 
@Override 
public void initialize(URL url, ResourceBundle rb) { 
    // TODO 
} 

public void setScreenParent(ScreensController screenParent){ 
    myController = screenParent; 
} 

@FXML 
private void goToScreen1(ActionEvent event){ 
    myController.setScreen(ScreensFramework.screen1ID); 
} 

@FXML 
private void goToScreen3(ActionEvent event){ 
    myController.setScreen(ScreensFramework.screen3ID); 
} 

/*________________________________________________________________________*/ 

@FXML 
private GridPane gridPane; 

@FXML 
private Text detailsTitle; 

@FXML 
private ObservableList<PieChart.Data> pieChartData; 

@FXML 
private PieChart piechart = new PieChart(pieChartData); 

@FXML 
private AnchorPane content; 

@FXML 
private Button button2; 



@FXML 
private void handleButton1Action(ActionEvent event) { 
     System.out.println("test"); 
     } 

@FXML public void handleMouseClick(MouseEvent arg0) 
{ 
    myController.setScreen(ScreensFramework.screen3ID); 

} 

@FXML 
private void handleButton2Action(ActionEvent event) { 
    gridPane.setGridLinesVisible(true); 
    ReadExcelFile r = new ReadExcelFile(); 
    File f = new File("C:\\Users\\k.vanmeenen\\Desktop\\ExportDefectsGraph.xlsx"); 
    float[][] tab = r.ReadExcelGrid(f); 

    pieChartData = 
      FXCollections.observableArrayList(
       new PieChart.Data("Blocking", tab[0][0]), 
       new PieChart.Data("Non Blocking, disturbing", tab[1][0]), 
       new PieChart.Data("Partial Blocking", tab[2][0]), 
       new PieChart.Data("Cosmetic", tab[3][0])); 

    piechart.setTitle("Defects per severity >"); 
    piechart.setData(pieChartData); 

    String cssChart = ScreensFramework.class.getResource("ChartPieCss.css").toExternalForm(); 
    piechart.getStylesheets().add(cssChart); 

    detailsTitle.setText("E-Contracting"); 


    Text rankTitle1 = new Text(Double.toString(Math.floor(tab[0][1]))); 
    gridPane.add(rankTitle1,1,1); 
    Text rankTitle2 = new Text(Double.toString(Math.floor(tab[0][2]))); 
    gridPane.add(rankTitle2,2,1); 
    Text rankTitle3 = new Text(Double.toString(Math.floor(tab[0][3]))); 
    gridPane.add(rankTitle3,3,1); 
    Text rankTitle4 = new Text(Double.toString(Math.floor(tab[0][4]))); 
    gridPane.add(rankTitle4,4,1); 
    Text rankTitle5 = new Text(Double.toString(Math.floor(tab[0][5]))); 
    gridPane.add(rankTitle5,5,1); 
    Text rankTitle6 = new Text(Double.toString(Math.floor(tab[0][6]))); 
    gridPane.add(rankTitle6,6,1); 
    Text rankTitle7 = new Text(Double.toString(Math.floor(tab[0][7]))); 
    gridPane.add(rankTitle7,7,1); 
    Text rankTitle8 = new Text(Double.toString(Math.floor(tab[0][8]))); 
    gridPane.add(rankTitle8,8,1); 
    Text rankTitle9 = new Text(Double.toString(Math.floor(tab[0][9]))); 
    gridPane.add(rankTitle9,9,1); 
    Text rankTitle10 = new Text(Double.toString(Math.floor(tab[0][10]))); 
    gridPane.add(rankTitle10,10,1); 
    Text rankTitle11 = new Text(Double.toString(Math.floor(tab[0][0]))); 
    gridPane.add(rankTitle11,11,1); 

    Text rankTitle21 = new Text(Double.toString(Math.floor(tab[1][1]))); 
    gridPane.add(rankTitle21,1,2); 
    Text rankTitle22 = new Text(Double.toString(Math.floor(tab[1][2]))); 
    gridPane.add(rankTitle22,2,2); 
    Text rankTitle23 = new Text(Double.toString(Math.floor(tab[1][3]))); 
    gridPane.add(rankTitle23,3,2); 
    Text rankTitle24 = new Text(Double.toString(Math.floor(tab[1][4]))); 
    gridPane.add(rankTitle24,4,2); 
    Text rankTitle25 = new Text(Double.toString(Math.floor(tab[1][5]))); 
    gridPane.add(rankTitle25,5,2); 
    Text rankTitle26 = new Text(Double.toString(Math.floor(tab[1][6]))); 
    gridPane.add(rankTitle26,6,2); 
    Text rankTitle27 = new Text(Double.toString(Math.floor(tab[1][7]))); 
    gridPane.add(rankTitle27,7,2); 
    Text rankTitle28 = new Text(Double.toString(Math.floor(tab[1][8]))); 
    gridPane.add(rankTitle28,8,2); 
    Text rankTitle29 = new Text(Double.toString(Math.floor(tab[1][9]))); 
    gridPane.add(rankTitle29,9,2); 
    Text rankTitle30 = new Text(Double.toString(Math.floor(tab[1][10]))); 
    gridPane.add(rankTitle30,10,2); 
    Text rankTitle31 = new Text(Double.toString(Math.floor(tab[1][0]))); 
    gridPane.add(rankTitle31,11,2); 


    Text rankTitle32 = new Text(Double.toString(Math.floor(tab[2][1]))); 
    gridPane.add(rankTitle32,1,3); 
    Text rankTitle33 = new Text(Double.toString(Math.floor(tab[2][2]))); 
    gridPane.add(rankTitle33,2,3); 
    Text rankTitle34 = new Text(Double.toString(Math.floor(tab[2][3]))); 
    gridPane.add(rankTitle34,3,3); 
    Text rankTitle35 = new Text(Double.toString(Math.floor(tab[2][4]))); 
    gridPane.add(rankTitle35,4,3); 
    Text rankTitle36 = new Text(Double.toString(Math.floor(tab[2][5]))); 
    gridPane.add(rankTitle36,5,3); 
    Text rankTitle37 = new Text(Double.toString(Math.floor(tab[2][6]))); 
    gridPane.add(rankTitle37,6,3); 
    Text rankTitle38 = new Text(Double.toString(Math.floor(tab[2][7]))); 
    gridPane.add(rankTitle38,7,3); 
    Text rankTitle39 = new Text(Double.toString(Math.floor(tab[2][8]))); 
    gridPane.add(rankTitle39,8,3); 
    Text rankTitle40 = new Text(Double.toString(Math.floor(tab[2][9]))); 
    gridPane.add(rankTitle40,9,3); 
    Text rankTitle41 = new Text(Double.toString(Math.floor(tab[2][10]))); 
    gridPane.add(rankTitle41,10,3); 
    Text rankTitle42 = new Text(Double.toString(Math.floor(tab[2][0]))); 
    gridPane.add(rankTitle42,11,3); 

    Text rankTitle42b = new Text(Double.toString(Math.floor(tab[3][1]))); 
    gridPane.add(rankTitle42b,1,4); 
    Text rankTitle43 = new Text(Double.toString(Math.floor(tab[3][2]))); 
    gridPane.add(rankTitle43,2,4); 
    Text rankTitle44 = new Text(Double.toString(Math.floor(tab[3][3]))); 
    gridPane.add(rankTitle44,3,4); 
    Text rankTitle45 = new Text(Double.toString(Math.floor(tab[3][4]))); 
    gridPane.add(rankTitle45,4,4); 
    Text rankTitle46 = new Text(Double.toString(Math.floor(tab[3][5]))); 
    gridPane.add(rankTitle46,5,4); 
    Text rankTitle47 = new Text(Double.toString(Math.floor(tab[3][6]))); 
    gridPane.add(rankTitle47,6,4); 
    Text rankTitle48 = new Text(Double.toString(Math.floor(tab[3][7]))); 
    gridPane.add(rankTitle48,7,4); 
    Text rankTitle49 = new Text(Double.toString(Math.floor(tab[3][8]))); 
    gridPane.add(rankTitle49,8,4); 
    Text rankTitle50 = new Text(Double.toString(Math.floor(tab[3][9]))); 
    gridPane.add(rankTitle50,9,4); 
    Text rankTitle51 = new Text(Double.toString(Math.floor(tab[3][10]))); 
    gridPane.add(rankTitle51,10,4); 
    Text rankTitle52 = new Text(Double.toString(Math.floor(tab[3][0]))); 
    gridPane.add(rankTitle52,11,4); 
} 



@FXML 
private void handleButtonClearAction(ActionEvent event) { 
    ObservableList<PieChart.Data> pieChartData = 
      FXCollections.observableArrayList(); 
    piechart.setTitle(""); 
    piechart.setData(pieChartData);

} }

“到目前为止，我可以点击饼图的各个部分，并转到另一个屏幕，但是当我按饼图的部分之一就是我想为它确认我点击了哪一个。

谢谢肯尼

来源

2013-12-11 Kanye

有anybodody？没有人？：'（ – Kanye

这就是答案。

添加一个普通标签和鼠标点击动作的饼图，然后添加以下代码：

@FXML 
private void mouseClick(MouseEvent mouseevent) { 

    for (final PieChart.Data data : piechart.getData()) { 
data.getNode().addEventHandler(MouseEvent.MOUSE_PRESSED, 
    new EventHandler<MouseEvent>() { 
     @Override public void handle(MouseEvent e) { 
      label.setTranslateX(e.getSceneX()); 
      label.setTranslateY(e.getSceneY()); 
      label.setText(String.valueOf(data.getPieValue()) + "%"); 
     } 
    }); 
} 



      }

来源

2014-05-31 18:07:19 miniHessel

Java fx - 如何从图表饼图中获取点击鼠标事件

回答

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