XFDF Annotations

[Patrick Herber <pa...@gmail.com>]

Hello

I'm trying to use PDFBox for importing annotations from an XFDF file 
into a PDF Document.
I found the class ImportXFDF which seemed appropriate but discovered 
that was "only" able to import fields (AcroForm). I also find some other 
limitation in other classes (FDFAnnotation, FDFDicionary) which were 
only able to deal with text annotations.
I allowed myself to integrate into the ImportXFDF's importFDF method 
also the capability to import annotations (in case it will work I will 
also send you all the changes I've done in this and in the other classes):

         ...
         List<FDFAnnotation> fdfAnnotations = 
fdfDocument.getCatalog().getFDF().getAnnotations();
         if ( fdfAnnotations != null)
         {
             Map<Integer, List<PDAnnotation>> pdAnnotations = 
createPDAnnotations(fdfAnnotations);
             List<PDPage> pages = 
pdfDocument.getDocumentCatalog().getAllPages();
             for ( int i = 0; i < pages.size(); i++ )
             {
                 List<PDAnnotation> annotations = pdAnnotations.get(i);
                 if ( annotations != null )
                 {
pages.get(i).setAnnotations(annotations);
                 }
             }
         }
         ...

At the end of this method the pdfDocument pages are filled with the 
relative annotations. However, if I perform a test in the output file 
there is no annotation:

         PDDocument pdfDocument = PDDocument.load(pdfFile);
         FDFDocument fdfDocument = FDFDocument.loadXFDF(xfdfFile);
         ImportXFDF importFDF = new ImportXFDF();
         importFDF.importFDF(pdfDocument, fdfDocument);
         pdfDocument.save(new FileOutputStream(dest));

I wonder therefore, if I'm proceeding in the right way. Is this the 
correct way to modify the content of the document pages (in this case 
adding annotations)?

Thanks for your support and best regards,
Patrick

Re: XFDF Annotations

[Patrick Herber <pa...@gmail.com>]

Hello

After reviewing the code and also the content of the resulting PDF I 
suspect that the problem comes from the "conversion" from an 
FDFAnnotation into a PDAnnotation.
Currently in my createPDAnnotations method I use following call to make 
this conversion:

PDAnnotation.createAnnotation(fdfAnnotation.getCOSObject());

In the PDF I see that for example the FDF annotation:

<underline page="0" color="#000000" date="D:20131210135518+00'00'" 
rect="155.300000,553.230000,188.470000,563.370000" flags="print" 
name="00C9AC47-D600-4D45-9696-30B35016664C" opacity="1" rotation="0" 
coords="155.300000,563.370000,188.470000,563.370000,155.300000,553.230000,188.470000,553.230000"/>

is converted into the following object:

16 0 obj
<<
/Type /Annot
/Page 0
/color [0.0 0.0 0.0]
/date (D:20131210135518+00'00')
/F 4
/NM ()
/Rect [155.3 553.23 188.47 563.37]
/CA 1.0
/Subj ()
/Subtype /Underline
 >>

Which does not seem to be complete... (Please also note that with this 
call every FDFAnnotation (highlight, strikeout, text, ...) is translated 
with a /Subtype /Underline!)


I've also tried using the matching PDAnnotation subclasses for doing 
this conversion:

if (fdfAnnotation instanceof FDFAnnotationLine)
{
    pdAnnotation = 
PDAnnotationLine.createAnnotation(fdfAnnotation.getCOSObject());
}
else if (fdfAnnotation instanceof FDFAnnotationSquare ||fdfAnnotation 
instanceof FDFAnnotationCircle)
{
    pdAnnotation = 
PDAnnotationSquareCircle.createAnnotation(fdfAnnotation.getCOSObject()));
}
...

But the result does not better.

Do you have any suggestion how I should proceed?

Thanks for your support and best regards,
Patrick



On 12/11/2013 03:49 PM, Patrick Herber wrote:
> Hello
>
> I'm trying to use PDFBox for importing annotations from an XFDF file 
> into a PDF Document.
> I found the class ImportXFDF which seemed appropriate but discovered 
> that was "only" able to import fields (AcroForm). I also find some 
> other limitation in other classes (FDFAnnotation, FDFDicionary) which 
> were only able to deal with text annotations.
> I allowed myself to integrate into the ImportXFDF's importFDF method 
> also the capability to import annotations (in case it will work I will 
> also send you all the changes I've done in this and in the other 
> classes):
>
>         ...
>         List<FDFAnnotation> fdfAnnotations = 
> fdfDocument.getCatalog().getFDF().getAnnotations();
>         if ( fdfAnnotations != null)
>         {
>             Map<Integer, List<PDAnnotation>> pdAnnotations = 
> createPDAnnotations(fdfAnnotations);
>             List<PDPage> pages = 
> pdfDocument.getDocumentCatalog().getAllPages();
>             for ( int i = 0; i < pages.size(); i++ )
>             {
>                 List<PDAnnotation> annotations = pdAnnotations.get(i);
>                 if ( annotations != null )
>                 {
> pages.get(i).setAnnotations(annotations);
>                 }
>             }
>         }
>         ...
>
> At the end of this method the pdfDocument pages are filled with the 
> relative annotations. However, if I perform a test in the output file 
> there is no annotation:
>
>         PDDocument pdfDocument = PDDocument.load(pdfFile);
>         FDFDocument fdfDocument = FDFDocument.loadXFDF(xfdfFile);
>         ImportXFDF importFDF = new ImportXFDF();
>         importFDF.importFDF(pdfDocument, fdfDocument);
>         pdfDocument.save(new FileOutputStream(dest));
>
> I wonder therefore, if I'm proceeding in the right way. Is this the 
> correct way to modify the content of the document pages (in this case 
> adding annotations)?
>
> Thanks for your support and best regards,
> Patrick
>