?? mouselistenerdemo1.java
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/* -----------------------
* MouseListenerDemo1.java
* -----------------------
* (C) Copyright 2002-2005, by Object Refinery Limited.
*/
package demo;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartMouseEvent;
import org.jfree.chart.ChartMouseListener;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.entity.ChartEntity;
import org.jfree.data.general.DefaultPieDataset;
import org.jfree.ui.ApplicationFrame;
import org.jfree.ui.RefineryUtilities;
/**
* A simple demonstration application showing chart mouse events on a pie chart.
*/
public class MouseListenerDemo1 extends ApplicationFrame
implements ChartMouseListener {
/**
* Creates a new demo.
*
* @param title the frame title.
*/
public MouseListenerDemo1(String title) {
super(title);
// create a dataset...
DefaultPieDataset data = new DefaultPieDataset();
data.setValue("Java", new Double(43.2));
data.setValue("Visual Basic", new Double(0.0));
data.setValue("C/C++", new Double(17.5));
// create the chart...
JFreeChart chart = ChartFactory.createPieChart(
"Pie Chart Demo 1", // chart title
data, // data
true, // include legend
true,
false
);
// add the chart to a panel...
ChartPanel chartPanel = new ChartPanel(chart, false, false, false,
false, false);
chartPanel.addChartMouseListener(this);
chartPanel.setPreferredSize(new java.awt.Dimension(500, 270));
setContentPane(chartPanel);
}
/**
* Receives chart mouse click events.
*
* @param event the event.
*/
public void chartMouseClicked(ChartMouseEvent event) {
ChartEntity entity = event.getEntity();
if (entity != null) {
System.out.println("Mouse clicked: " + entity.toString());
}
else {
System.out.println("Mouse clicked: null entity.");
}
}
/**
* Receives chart mouse moved events.
*
* @param event the event.
*/
public void chartMouseMoved(ChartMouseEvent event) {
int x = event.getTrigger().getX();
int y = event.getTrigger().getY();
ChartEntity entity = event.getEntity();
if (entity != null) {
System.out.println(
"Mouse moved: " + x + ", " + y + ": " + entity.toString()
);
}
else {
System.out.println(
"Mouse moved: " + x + ", " + y + ": null entity."
);
}
}
/**
* Starting point for the demonstration application.
*
* @param args ignored.
*/
public static void main(String[] args) {
MouseListenerDemo1 demo = new MouseListenerDemo1("Mouse Listener Demo");
demo.pack();
RefineryUtilities.centerFrameOnScreen(demo);
demo.setVisible(true);
}
}
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