[iText-questions] Question about watermark

[Kalpana Sundaram]

Hello,

 

I am a Java/J2EE developer in Parsippany, NJ. I am trying to make a watermark be displayed on every page of a PDF file instead of just on the first page. The following are the lines of code that I am using to achieve this:

String templateFolder = (String) htHeader.get("TEMPLATE_FOLDER");
    String templateName = (String) htHeader.get("TEMPLATE");
    PdfReader reader = new PdfReader(stringUtils.getFolder(templateFolder)+
                                       templateName);
    int n = reader.getNumberOfPages();
    if (n==0){
      throw new Exception("This document has zero(0) pages");
    }

    int lastDetailPageNum = getLastDetailPage(alDetail);
    if (lastDetailPageNum > 0 && n < lastDetailPageNum) {
      appendExtraPagesToTemplate(templateName, templateFolder, reader, htHeader, alDetail, lastDetailPageNum);
      reader = new PdfReader(stringUtils.getFolder(templateFolder)+
                                       templateName);
    }

    n = reader.getNumberOfPages();
    pdfConsts.setTotalNumOfPages(n);

    int i = 0;
    PdfImportedPage page;
    int rotation;
    Rectangle rect = reader.getPageSizeWithRotation(1);
    Color bgcolor = getColor(htHeader, "BGCOLOR_BASE", "BGCOLOR_VAL1", "BGCOLOR_VAL2",
    "BGCOLOR_VAL3", "BGCOLOR_VAL4");
    rect.setBackgroundColor(bgcolor);

    FileOutputStream fos = new FileOutputStream(((String) htHeader.get("SAVE_FOLDER"))+
                                                ((String) htHeader.get("SAVE_AS")));
    PdfWriter writer = PdfWriter.getInstance(document, fos);
    document.setPageSize(rect);

    Image wmImg = pdfImage.loadImage("H:\\dms-html\\cendant\\images\\sponge.jpg");
    float tLy = document.getPageSize().height() - 5f - wmImg.scaledHeight();
    Watermark watermark = new Watermark(wmImg, 5f, tLy);
    document.add(watermark);

    document.open();
    PdfContentByte cb = writer.getDirectContent();

    while (i < n) {
      i++;
      //System.out.println("Current template pagenum: " + i);
      rect = reader.getPageSizeWithRotation(i);
      rect.setBackgroundColor(bgcolor);
      document.setPageSize(rect);
      document.newPage();

      watermark = new Watermark(wmImg, 5f, tLy);
      document.add(watermark);

      page = writer.getImportedPage(reader, i);
      rotation = reader.getPageRotation(i);
      if (rotation == 90 || rotation == 270) {
        cb.addTemplate(page, 0, -1f, 1f, 0, 0, rect.height());
      }
      else {
        cb.addTemplate(page, 1f, 0, 0, 1f, 0, 0);
      }

      for (int j = 0; j < alDetail.size(); j++) {
        Hashtable htDetail = (Hashtable) alDetail.get(j);
        int pageNum = 1;
        if (htDetail.containsKey("PAGENUM") && !stringUtils.isNull((String) htDetail.get("PAGENUM")))
          pageNum = Integer.parseInt((String) htDetail.get("PAGENUM"));

          if (pageNum == 0)
            pageNum = 1;

//        System.out.println("Current detail pagenum: " + pageNum);

        if (pageNum != i)
          continue;

        String sActionType = (String) htDetail.get("ACTION_TYPE");
//        System.out.println("Current Action Type: " + sActionType);

        if ( sActionType.equals("T") )
          pdfText.addText(htDetail, htHeader, cb, document);
        else if ( sActionType.equals("I") )
          pdfImage.addImage(htDetail, cb, document);
        else if ( sActionType.equals("P") )
          pdfPDF.addPDF(htDetail, writer, document, cb, 1);
        else if ( sActionType.equals("C") )
          pdfColumnText.addColumnText(document, htDetail, htHeader, cb);
        else if ( sActionType.equals("L") )
          pdfGraphics.drawLine(document, htDetail, cb);
        else if ( sActionType.equals("R") )
          pdfGraphics.drawRectangle(document, htDetail, cb);
        else if ( sActionType.equals("K") )
          pdfGraphics.drawCircle(document, htDetail, cb);
      }
    }

 

-----------------------------------------------------------------------------------

 

The problem is that when I invoke the method containing this source code, the watermark is displayed on only the first page of the output PDF file instead of on all the pages. Is there something I am doing wrong here? Please tell me the correct way of adding watermark to all the pages of a PDF file and also send me example code, if any.

 

Thanks,

 

Kalpana

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