/**
 * Exports the specified JFreeChart to a PDF file using
 * <a href="http://itextpdf.com" target="_blank">iText</a>, bundled with
 * Fiji. The destination file is specified by the user in a save dialog
 * prompt. An error message is displayed if the file could not be saved.
 * Does nothing if {@code chart} is {@code null}.
 *
 * @param chart
 *            the <a href="http://javadoc.imagej.net/JFreeChart/" target=
 *            "_blank">JFreeChart </a> to export.
 * @param bounds
 *            the Rectangle delimiting the boundaries within which the chart
 *            should be drawn.
 * @see #exportChartAsPDF(JFreeChart, Rectangle)
 * @see #exportChartAsSVG(JFreeChart, Rectangle)
 * @see #exportChartAsSVG(JFreeChart, Rectangle, File)
 */
public static void exportChartAsPDF(final JFreeChart chart, final Rectangle bounds, final File f)
		throws FileNotFoundException, DocumentException {

	final int margin = 0; // page margins

	// Initialize writer
	final Document document = new Document(new com.itextpdf.text.Rectangle(bounds.width, bounds.height), margin,
			margin, margin, margin);
	final PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream(f));

	document.open();
	final PdfContentByte cb = writer.getDirectContent();
	final PdfTemplate tp = cb.createTemplate(bounds.width, bounds.height);

	// Draw the chart. Release resources upon completion
	final Graphics2D g2 = tp.createGraphics(bounds.width, bounds.height, new DefaultFontMapper());
	chart.draw(g2, bounds);
	g2.dispose();

	// Write to file
	cb.addTemplate(tp, 0, 0);

	document.close();
}
 

/**
 * Writes swing to pdf
 * 
 * @param panel
 * @param fileName
 * @throws DocumentException
 * @throws Exception
 */
public static void writeToPDF(JComponent panel, File fileName)
    throws IOException, DocumentException {
  // print the panel to pdf
  int width = panel.getWidth();
  int height = panel.getHeight();
  logger.info(
      () -> MessageFormat.format("Exporting panel to PDF file (width x height; {0} x {1}): {2}",
          width, height, fileName.getAbsolutePath()));
  Document document = new Document(new Rectangle(width, height));
  PdfWriter writer = null;
  try {
    writer = PdfWriter.getInstance(document, new FileOutputStream(fileName));
    document.open();
    PdfContentByte contentByte = writer.getDirectContent();
    PdfTemplate template = contentByte.createTemplate(width, height);
    Graphics2D g2 = new PdfGraphics2D(contentByte, width, height, new DefaultFontMapper());
    panel.print(g2);
    g2.dispose();
    contentByte.addTemplate(template, 0, 0);
    document.close();
    writer.close();
  } finally {
    if (document.isOpen()) {
      document.close();
    }
  }
}
 

/**
 * This method saves a chart as a PDF with given dimensions
 *
 * @param chart
 * @param width
 * @param height
 * @param fileName is a full path
 */
public static void writeChartToPDF(JFreeChart chart, int width, int height, File fileName)
    throws Exception {
  PdfWriter writer = null;

  Document document = new Document(new Rectangle(width, height));

  try {
    writer = PdfWriter.getInstance(document, new FileOutputStream(fileName));
    document.open();
    PdfContentByte contentByte = writer.getDirectContent();
    PdfTemplate template = contentByte.createTemplate(width, height);
    Graphics2D graphics2d = template.createGraphics(width, height, new DefaultFontMapper());
    Rectangle2D rectangle2d = new Rectangle2D.Double(0, 0, width, height);

    chart.draw(graphics2d, rectangle2d);

    graphics2d.dispose();
    contentByte.addTemplate(template, 0, 0);

  } catch (Exception e) {
    e.printStackTrace();
    throw e;
  } finally {
    document.close();
  }
}
 

/**
 * This method saves a chart as a PDF with given dimensions
 * 
 * @param chart
 * @param width
 * @param height
 * @param fileName is a full path
 */
public static void writeChartToPDF(JFreeChart chart, int width, int height, File fileName)
    throws Exception {
  PdfWriter writer = null;

  Document document = new Document(new Rectangle(width, height));

  try {
    writer = PdfWriter.getInstance(document, new FileOutputStream(fileName));
    document.open();
    PdfContentByte contentByte = writer.getDirectContent();
    PdfTemplate template = contentByte.createTemplate(width, height);
    Graphics2D graphics2d = template.createGraphics(width, height, new DefaultFontMapper());
    Rectangle2D rectangle2d = new Rectangle2D.Double(0, 0, width, height);

    chart.draw(graphics2d, rectangle2d);

    graphics2d.dispose();
    contentByte.addTemplate(template, 0, 0);

  } catch (Exception e) {
    e.printStackTrace();
    throw e;
  } finally {
    document.close();
  }
}
 

/**
 * Writes swing to pdf
 * 
 * @param panel
 * @param fileName
 * @throws DocumentException
 * @throws Exception
 */
public static void writeToPDF(JComponent panel, File fileName)
    throws IOException, DocumentException {
  // print the panel to pdf
  int width = panel.getWidth();
  int height = panel.getHeight();
  logger.info(
      () -> MessageFormat.format("Exporting panel to PDF file (width x height; {0} x {1}): {2}",
          width, height, fileName.getAbsolutePath()));
  Document document = new Document(new Rectangle(width, height));
  PdfWriter writer = null;
  try {
    writer = PdfWriter.getInstance(document, new FileOutputStream(fileName));
    document.open();
    PdfContentByte contentByte = writer.getDirectContent();
    PdfTemplate template = contentByte.createTemplate(width, height);
    Graphics2D g2 = new PdfGraphics2D(contentByte, width, height, new DefaultFontMapper());
    panel.print(g2);
    g2.dispose();
    contentByte.addTemplate(template, 0, 0);
    document.close();
    writer.close();
  } finally {
    if (document.isOpen()) {
      document.close();
    }
  }
}
 

/**
 * This method saves a chart as a PDF with given dimensions
 * 
 * @param chart
 * @param width
 * @param height
 * @param fileName is a full path
 */
public static void writeChartToPDF(JFreeChart chart, int width, int height, File fileName)
    throws Exception {
  PdfWriter writer = null;

  Document document = new Document(new Rectangle(width, height));

  try {
    writer = PdfWriter.getInstance(document, new FileOutputStream(fileName));
    document.open();
    PdfContentByte contentByte = writer.getDirectContent();
    PdfTemplate template = contentByte.createTemplate(width, height);
    Graphics2D graphics2d = template.createGraphics(width, height, new DefaultFontMapper());
    Rectangle2D rectangle2d = new Rectangle2D.Double(0, 0, width, height);

    chart.draw(graphics2d, rectangle2d);

    graphics2d.dispose();
    contentByte.addTemplate(template, 0, 0);

  } catch (Exception e) {
    e.printStackTrace();
    throw e;
  } finally {
    document.close();
  }
}
 

@SuppressWarnings("deprecation")
public static void writeChartsToPDF(List<JFreeChart> charts, int width, int height, OutputStream outputStream, String hostname, Date date) {
	PdfWriter writer = null;

	Document document = new Document();

	
	try {
		
		writer = PdfWriter.getInstance(document, outputStream);
		writer.setPageEmpty(false);
		
		
		
		document.open();
		document.setPageSize(PageSize.A4);
		document.add(new Paragraph("Aggregates Report generated by " + hostname + " on " + date.toString()));
		document.newPage();
		writer.newPage();
		
		PdfContentByte contentByte = writer.getDirectContent();
		
		PdfTemplate template;
		Graphics2D graphics2d;
		
		
		int position = 0;
		Rectangle2D rectangle2d;
		
		
		for (JFreeChart chart : charts){
			LOG.debug("Writing chart to PDF");
			if (writer.getVerticalPosition(true)-height+(height*position) < 0){
				position = 0;
				document.newPage();
				writer.newPage();					
				
			}
			template = contentByte.createTemplate(width, height);
			graphics2d = template.createGraphics(width, height, new DefaultFontMapper());
			rectangle2d = new Rectangle2D.Double(0, 0, width, height);
			chart.draw(graphics2d, rectangle2d);
			graphics2d.dispose();

			
			contentByte.addTemplate(template, 38, writer.getVerticalPosition(true)-height+(height*position));
			position--;
			
			

		}

	} catch (Exception e) {
		e.printStackTrace();
	}
	document.close();
}