// draws an image of the current map
public void exportToPNG() {
JFileChooser saveFileChooser = new JFileChooser();
int returnVal = saveFileChooser.showSaveDialog(this);
if (returnVal == JFileChooser.APPROVE_OPTION) {
File file = saveFileChooser.getSelectedFile();
String filename = file.getName();
if (!filename.contains(".")) filename = file.getPath() + ".png";
else filename = file.getPath();
try {
JFrame frame = new JFrame();
mxGraphComponent graphCpnt = new mxGraphComponent(panGraph);
frame.setContentPane(graphCpnt);
BufferedImage bi = ScreenImage.createImage(graphCpnt);
ScreenImage.writeImage(bi, filename);
} catch (IOException ex) {
Logger.getLogger(RelationMapPanel.class.getName()).log(Level.SEVERE, null, ex);
}
}
}
