Class PdfAnnotation.PdfImportedLink

java.lang.Object
org.openpdf.text.pdf.PdfAnnotation.PdfImportedLink
Enclosing class:
PdfAnnotation
public static class PdfAnnotation.PdfImportedLink extends Object
This class processes links from imported pages so that they may be active. The following example code reads a group of files and places them all on the output PDF, four pages in a single page, keeping the links active. 
String[] files = new String[] {"input1.pdf", "input2.pdf"};
String outputFile = "output.pdf";
int firstPage=1;
Document document = new Document();
PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream(outputFile));
document.setPageSize(PageSize.A4);
float W = PageSize.A4.getWidth() / 2;
float H = PageSize.A4.getHeight() / 2;
document.open();
PdfContentByte cb = writer.getDirectContent();
for (int i = 0; i < files.length; i++) {
   PdfReader currentReader = new PdfReader(files[i]);
   currentReader.consolidateNamedDestinations();
   for (int page = 1; page <= currentReader.getNumberOfPages(); page++) {
       PdfImportedPage importedPage = writer.getImportedPage(currentReader, page);
       float a = 0.5f;
       float e = (page % 2 == 0) ? W : 0;
       float f = (page % 4 == 1 || page % 4 == 2) ? H : 0;
       ArrayList links = currentReader.getLinks(page);
       cb.addTemplate(importedPage, a, 0, 0, a, e, f);
       for (int j = 0; j < links.size(); j++) {
           PdfAnnotation.PdfImportedLink link = (PdfAnnotation.PdfImportedLink)links.get(j);
           if (link.isInternal()) {
               int dPage = link.getDestinationPage();
               int newDestPage = (dPage-1)/4 + firstPage;
               float ee = (dPage % 2 == 0) ? W : 0;
               float ff = (dPage % 4 == 1 || dPage % 4 == 2) ? H : 0;
               link.setDestinationPage(newDestPage);
               link.transformDestination(a, 0, 0, a, ee, ff);
           }
           link.transformRect(a, 0, 0, a, e, f);
           writer.addAnnotation(link.createAnnotation(writer));
       }
       if (page % 4 == 0)
       document.newPage();
   }
   if (i < files.length - 1)
   document.newPage();
   firstPage += (currentReader.getNumberOfPages()+3)/4;
}
document.close();

  • Field Details

    • llx

      float llx

    • lly

      float lly

    • urx

      float urx

    • ury

      float ury

    • parameters

      HashMap<PdfName, PdfObject> parameters

    • destination

      PdfArray destination

    • newPage

      int newPage

  • Constructor Details

  • Method Details

    • isInternal

      public boolean isInternal()

    • getDestinationPage

      public int getDestinationPage()

    • setDestinationPage

      public void setDestinationPage(int newPage)

    • transformDestination

      public void transformDestination(float a, float b, float c, float d, float e, float f)

    • transformRect

      public void transformRect(float a, float b, float c, float d, float e, float f)

    • createAnnotation

      public PdfAnnotation createAnnotation(PdfWriter writer)

    • toString

      public String toString()
      Returns a String representation of the link.
      Overrides:
      toString in class Object
      Returns:
      a String representation of the imported link
      Since:
      2.1.6