Let's see:
- HeaderFooter is not supported anymore.
- You can't call Document methods in page events.
- The way to set headers and footer is through page events
This is documented everywhere.
Paulo
> -----Original Message-----
> From: Jeffrey White [mailto:[email protected]]
> Sent: Tuesday, July 07, 2009 2:56 PM
> To: [email protected]
> Subject: [iText-questions] Setting document header more than
> once causes unusual problems
>
> Hello, and thank you for taking time to analyze this problem.
>
> I am trying to create a pdf file where multiple images of
> documents are translated onto the pages. I am having a
> problem where setting the header with document.setHeader()
> multiple times is causing the header to become distorted
> after calling the method more than once, shrinking and
> automatically moving the alignment to the left corner of the
> document. I am not sure why, and after looking through the
> forums and documentation I did not come across potential
> problems that would make this occur. I have also tried
> moving where the header is set to muliple places, getting the
> same effect. If you can offer any insight, it would be
> highly appreciated.
>
> Below is the code that I am using to generate the pdf. To
> clarify some points that might not be apparent, the array
> docURLs contains the locations of tiff images to be converted
> into the pdf; there is also a loop for masking certain parts
> of the document that contain sensitive information. There
> are potentially multiple pages to each document, which is
> taken care of in another loop.
>
> Thank you.
>
>
> import java.util.StringTokenizer;
>
> import java.io.FileOutputStream;
>
> import com.lowagie.text.Document;
> import com.lowagie.text.Element;
> import com.lowagie.text.Font;
> import com.lowagie.text.HeaderFooter;
> import com.lowagie.text.Image;
> //import com.lowagie.text.Paragraph;
> import com.lowagie.text.Phrase;
>
> import com.lowagie.text.pdf.BaseFont;
> import com.lowagie.text.pdf.PdfContentByte;
> //import com.lowagie.text.pdf.PdfPCell;
> import com.lowagie.text.pdf.PdfWriter;
> import com.lowagie.text.pdf.RandomAccessFileOrArray;
> import com.lowagie.text.pdf.codec.TiffImage;
>
>
>
> //import com.lowagie.text.ExceptionConverter;
> import com.lowagie.text.Rectangle;
> //import com.lowagie.text.pdf.PdfPTable;
> import com.lowagie.text.pdf.PdfPageEventHelper;
>
>
>
>
> /**
> *
> *
> */
> public class PrintHelper extends PdfPageEventHelper {
> private static String pdfHeader="";
> public static final String CLASSNAME = PrintHelper.class.getName();
> public static void main(String args[])
> {
> generatePDF();
> }
> /**
> *...@see
> com.lowagie.text.pdf.PdfPageEventHelper#onEndPage(com.lowagie.
> text.pdf.PdfWriter, com.lowagie.text.Document)
> *
> */
> public void onEndPage(PdfWriter writer, Document document) {
> try {
> document.setHeader(new HeaderFooter(new
> Phrase(pdfHeader), false));
> }
> catch (Exception e) {
>
> }
> }
>
>
> /**
> * Generates the pdf
> */
> public static void generatePDF () {
> String[] docURLs = new String[2];
> docURLs[0] = "C:/sortedDocs/exampleDoc.TIF";
> docURLs[1] = "C:/sortedDocs/exampleDoc2.TIF";
> try {
> Document document = new Document();
> FileOutputStream out = new FileOutputStream("C://Test.pdf");
> PdfWriter writer = PdfWriter.getInstance(document, out);
> writer.setPageEvent(new PrintHelper());
> int pages = 0;
> RandomAccessFileOrArray ra = null;
>
> //set up the starting page size and header
> String starturl = docURLs[0];
> try {
> ra = new RandomAccessFileOrArray(starturl);
> }
> catch(Exception e) {
> e.printStackTrace();
> }
> Image startImage = TiffImage.getTiffImage(ra, 1);
> document.setPageSize(new
> Rectangle(startImage.getScaledWidth(), startImage.getScaledHeight()));
> //set up the header before first page loaded
> String custNo = "test"; //docURLs[0].getCustNo();
> String jobNo = "test"; //docURLs[0].getJobNo();
> String rejected= "A"; //docURLs[0].getDocStatus();
> String docRejected="";
> String role = "";
> if(rejected!=null && rejected.trim().equalsIgnoreCase("R"))
> docRejected="DOCUMENT REJECTED ";
> else if(rejected!=null &&
> rejected.trim().equalsIgnoreCase("A")) docRejected="DOCUMENT
> APPROVED ";
> BaseFont bf_times = BaseFont.createFont(BaseFont.TIMES_ROMAN,
> "Cp1252", false);
> HeaderFooter header = new HeaderFooter(
> new Phrase(docRejected +"COPY CustNo-"+custNo+" JobNo-
> "+jobNo, new Font(bf_times,40)), false);
> header.setAlignment(Element.ALIGN_CENTER);
>
> document.setHeader(header);
> document.open();
> PdfContentByte cb = writer.getDirectContent();
> for(int l = 0 ; l<docURLs.length ;l++ )
> {
> String url1 = docURLs[l];
> String coordinates1 = null;
> int comps = 0;
> try {
> ra = new RandomAccessFileOrArray(url1);
> comps = TiffImage.getNumberOfPages(ra);
> }
> catch (Throwable e) {
> }
> custNo = "test1";
> jobNo = "test1";
> role = null;
> rejected= "A";
> docRejected="";
> if(rejected!=null && rejected.trim().equalsIgnoreCase("R"))
> docRejected="DOCUMENT REJECTED ";
> else if(rejected!=null &&
> rejected.trim().equalsIgnoreCase("A")) docRejected="DOCUMENT
> APPROVED ";
> pdfHeader = docRejected +"COPY CustNo-"+ custNo + " JobNo-"+jobNo;
> if(role==null || role.trim().equalsIgnoreCase(""))
> role="01";
> try {
> String coordinates =coordinates1;
> int locX[] = null;
> int locY[] = null;
> int page[] = null;
> int scaleX[] = null;
> int scaleY[] = null;
> int absX = -10; // Constant relative image positioners
> int absY = 0 ; // Constant relative image positioners
> if(jobNo ==null || jobNo.trim().equalsIgnoreCase("") ||
> jobNo.trim().equalsIgnoreCase("null")) jobNo="";
> if(custNo==null || custNo.trim().equalsIgnoreCase("") ||
> custNo.trim().equalsIgnoreCase("null")) custNo="";
> if(coordinates!=null &&
> !coordinates.trim().equalsIgnoreCase("") &&
> !coordinates.trim().equalsIgnoreCase("null")){
> StringTokenizer t = new StringTokenizer(coordinates,";",false);
> int size = t.countTokens();
> locX = new int[size];
> locY = new int[size];
> page = new int[size];
> scaleX = new int[size];
> scaleY = new int[size];
> absX = -10; // Constant relative image positioners
> absY = 0 ; // Constant relative image positioners
> int k = 0;
> while(t.hasMoreTokens()) {
> String s = t.nextToken();
> StringTokenizer n = new StringTokenizer(s,",");
> if(n.hasMoreTokens()){
> s = n.nextToken();
> locX[k] = Integer.parseInt(s.trim());
> }
> if(n.hasMoreTokens()){
> s = n.nextToken();
> locY[k] = Integer.parseInt(s.trim());
> }
> if(n.hasMoreTokens()){
> s = n.nextToken();
> scaleX[k] = Integer.parseInt(s.trim());
> }
> if(n.hasMoreTokens()){
> s = n.nextToken();
> scaleY[k] = Integer.parseInt(s.trim());
> }
> if(n.hasMoreTokens()){
> s = n.nextToken();
> page[k] = Integer.parseInt(s.trim());
> }
> k++;
> }
> }
> Image img2 = TiffImage.getTiffImage(ra, 1);
> //document.setPageSize(new Rectangle(img2.getScaledWidth(),
> img2.getScaledHeight()));
> for (int c = 0; c < comps; ++c) {
> try {
> Image img = TiffImage.getTiffImage(ra, c + 1);
> if(coordinates!=null &&
> !coordinates.trim().equalsIgnoreCase("") &&
> !coordinates.trim().equalsIgnoreCase("null") &&
> !role.trim().equalsIgnoreCase("02")){
> byte maskr[] = new byte[16384];
> for (int w = 0; w < 16384; ++w)
> maskr[w] = -1;
> for(int i=0;i<scaleX.length;i++) {
> if(page[i]==c+1){
> for(int f =locX[i] ;f<=locY[i];f++){
> for(int s=f*64+scaleX[i] ;s<=f*64+scaleY[i] ;s++){
> maskr[s]=0;
> }
> }
> Image mask = Image.getInstance(512,256, 1, 1, maskr);
> mask.makeMask();
> mask.setInverted(true);
> img.setImageMask(mask);
> }
> }
> }
> //img.scalePercent(19);
> if (img != null) {
> absX=(int) (590-img.getScaledWidth());
> absY=(int) (790-img.getScaledHeight());
> //img.setAbsolutePosition(absX, absY);
>
>
> img.scaleToFit(img.getScaledWidth()-70, img.getScaledHeight()-70);
> img.setAbsolutePosition(0,0);
>
> cb.addImage(img);
> ++pages;
>
> document.newPage();
> document.setPageSize(new Rectangle(img2.getScaledWidth(),
> img2.getScaledHeight()));
> }
> }
> catch (Throwable e) {
> }
> }
> ra.close();
> }catch (Exception e) {
> }
> }
> document.close();
> out.flush();
> }
> catch (Exception e) {
> }
> }
>
> }
>
>
>
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