org.jfree.ui.ExtensionFileFilter Java Examples

/**
 * Opens a file chooser and gives the user an opportunity to save the chart in PNG format.
 * 
 * @throws IOException
 *             if there is an I/O error.
 */

@Override
public void doSaveAs() throws IOException {

	JFileChooser fileChooser = new JFileChooser();
	fileChooser.setCurrentDirectory(this.defaultDirectoryForSaveAs);
	ExtensionFileFilter filter = new ExtensionFileFilter(localizationResources.getString("PNG_Image_Files"), ".png");
	fileChooser.addChoosableFileFilter(filter);

	int option = fileChooser.showSaveDialog(this);
	if (option == JFileChooser.APPROVE_OPTION) {
		String filename = fileChooser.getSelectedFile().getPath();
		if (isEnforceFileExtensions()) {
			if (!filename.endsWith(".png")) {
				filename = filename + ".png";
			}
		}
		ChartUtilities.saveChartAsPNG(new File(filename), this.chart, getWidth(), getHeight());
	}

}
 

/**
 * Opens a file chooser and gives the user an opportunity to save the chart
 * in PNG format.
 *
 * @throws IOException if there is an I/O error.
 */
public void doSaveAs() throws IOException {

    JFileChooser fileChooser = new JFileChooser();
    ExtensionFileFilter filter = new ExtensionFileFilter(
            localizationResources.getString("PNG_Image_Files"), ".png");
    fileChooser.addChoosableFileFilter(filter);

    int option = fileChooser.showSaveDialog(this);
    if (option == JFileChooser.APPROVE_OPTION) {
        String filename = fileChooser.getSelectedFile().getPath();
        if (isEnforceFileExtensions()) {
            if (!filename.endsWith(".png")) {
                filename = filename + ".png";
            }
        }
        ChartUtilities.saveChartAsPNG(new File(filename), this.chart, 
                getWidth(), getHeight());
    }

}
 

/**
 * Creates the file chooser.
 *
 * @return the initialized file chooser.
 */
protected JFileChooser createFileChooser() {
    final JFileChooser fc = new JFileChooser();
    fc.addChoosableFileFilter(
        new ExtensionFileFilter(getFileDescription(), getFileExtension())
    );
    fc.setMultiSelectionEnabled(false);
    fc.setCurrentDirectory(getCurrentDirectory());
    return fc;
}
 

private void createChartPrintPostScriptJob() {
// Use the pre-defined flavor for a Printable from an InputStream 
	DocFlavor flavor = DocFlavor.SERVICE_FORMATTED.PRINTABLE;

		// Specify the type of the output stream 
	String psMimeType = DocFlavor.BYTE_ARRAY.POSTSCRIPT.getMimeType();

	// Locate factory which can export a GIF image stream as Postscript 
	StreamPrintServiceFactory[] factories =
	StreamPrintServiceFactory.lookupStreamPrintServiceFactories(
				flavor, psMimeType);
	if (factories.length == 0) {
		System.err.println("No suitable factories");
		System.exit(0); // FIXME too
	}
               // Obtain file name from user
               JFileChooser fileChooser = new JFileChooser();
               ExtensionFileFilter filter = new ExtensionFileFilter(
                       localizationResources.getString("PostScript_Files"), ".eps");
               fileChooser.addChoosableFileFilter(filter);
               String filename="";
               int option = fileChooser.showSaveDialog(this);
               if (option == JFileChooser.APPROVE_OPTION) {
                  filename = fileChooser.getSelectedFile().getPath();
                  if (isEnforceFileExtensions()) {
                     if (!filename.endsWith(".eps")) {
                        filename = filename + ".eps";
                     }
                  } else
                     return;
               }

	try {
		// Create a file for the exported postscript
		FileOutputStream fos = new FileOutputStream(filename);

		// Create a Stream printer for Postscript 
		StreamPrintService sps = factories[0].getPrintService(fos);

		// Create and call a Print Job 
		DocPrintJob pj = sps.createPrintJob();
		PrintRequestAttributeSet aset = new HashPrintRequestAttributeSet();

		Doc doc = new SimpleDoc(this, flavor, null);

		pj.print(doc, aset);
		fos.close();

	} catch (PrintException pe) { 
		System.err.println(pe);
	} catch (IOException ie) { 
		System.err.println(ie);
	}

  }
 

/**
 * Prints the chart on a single page.
 *
 * @param g  the graphics context.
 * @param pf  the page format to use.
 * @param pageIndex  the index of the page. If not <code>0</code>, nothing 
 *                   gets print.
 *
 * @return The result of printing.
 */
public int print(Graphics g, PageFormat pf, int pageIndex) {

   if (pageIndex != 0) {
      return NO_SUCH_PAGE;
   }
   /** this works but the curve is made of little pieces */
   Graphics2D g2 = (Graphics2D) g;
   double x = pf.getImageableX();
   double y = pf.getImageableY();
   double w = pf.getImageableWidth();
   double h = pf.getImageableHeight();
   this.chart.draw(g2, new Rectangle2D.Double(x, y, w, h), this.anchor,
           null);
   
   if (printToPrinter)  return PAGE_EXISTS;
   // The rest should be moved up to the export eps action listener so it's not done per page'
   // Show export dialog
   JFileChooser fileChooser = new JFileChooser();
   ExtensionFileFilter filter = new ExtensionFileFilter(
           localizationResources.getString("PostScript_Files"), ".eps");
   fileChooser.addChoosableFileFilter(filter);
   String filename="";
   int option = fileChooser.showSaveDialog(this);
   if (option == JFileChooser.APPROVE_OPTION) {
      filename = fileChooser.getSelectedFile().getPath();
      if (isEnforceFileExtensions()) {
         if (!filename.endsWith(".eps") || !filename.endsWith(".ps")) {
            filename = filename + ".eps";
         }
      } else
         return NO_SUCH_PAGE;
   }
    
   try {
      OutputStream out = new java.io.FileOutputStream(new File(filename));
      out = new java.io.BufferedOutputStream(out);

      //Instantiate the EPSDocumentGraphics2D instance
      EPSDocumentGraphics2D g2dps = new EPSDocumentGraphics2D(false);
      g2dps.setGraphicContext(new org.apache.xmlgraphics.java2d.GraphicContext());
      //Set up the document size
      g2dps.setupDocument(out, (int)w, (int)h+200);

      //Paint a bounding box
      g2dps.drawRect((int)x, (int)y, (int)w, (int)h);
      this.chart.draw(g2dps, new Rectangle2D.Double(x, y, w, h), this.anchor,
              null);


      //A few rectangles rotated and with different color

      //Cleanup
      g2dps.finish();
      out.flush();
      out.close();
   }
   catch(java.io.IOException e){
      return NO_SUCH_PAGE;
   }
   return PAGE_EXISTS;
   
}