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Subject: Re: Overlaying PDFs > 1.4 fails & Hyperlinks are not clickable in
 overlays
To: users@pdfbox.apache.org
References: <56DD9E8A.3040207@avaintec.com> <56DDB823.9000209@t-online.de>
 <56E04594.8030200@avaintec.com> <56E0861E.2050309@t-online.de>
From: Anna Taracha <anna.taracha@avaintec.com>
Message-ID: <56E1BF4D.7000608@avaintec.com>
Date: Thu, 10 Mar 2016 20:39:09 +0200
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Hello!

You can find the original PDF file and the overlay PDF file here:

http://www.elisanet.fi/jakorasia/ANNA/doc.pdf (original PDF)
http://www.elisanet.fi/jakorasia/ANNA/wm.pdf (overlay file)

They both have XRef streams and do not have parameter errors (according=20
to 3-Heights=E2=84=A2 PDF Validator Online Tool). They are based on versi=
on 1.5.=20
The result file has parameter error so something strange happens during=20
overlaying. As all the files are based on version 1.5, they should be=20
allowed to have XRef streams which was introduced in version 1.5.=20
Preflight can validate only PDF/A-1b which is based on version 1.4 so I=20
can't use it to validate PDFs 1.5 fully.

However, your suggested code did the trick and now my PDF files are=20
valid. I guess there is something wrong with XRef stream after=20
overlaying. I will use your code as a workaround for now, so thank you=20
for it :)

Yes, I was asking, if clickable hyperlinks in overlays will be possible=20
in a future release (you would create a similar feature that I did)? I=20
am just curious, if it is something that will/could be considered.

-anna-

On 09.03.2016 22:22, Tilman Hausherr wrote:
> Am 09.03.2016 um 16:47 schrieb Anna Taracha:
>> Result of PDFBox 2.0.0-RC3:
>>
>> http://www.elisanet.fi/jakorasia/ANNA/result-PDFBox2.pdf
>>
>> Result of PDFBox 1.8.11:
>>
>> http://www.elisanet.fi/jakorasia/ANNA/result-PDFBox18.pdf
>
> Here's what I get with PDF-Tools:
>
> 1.8:
> Validating file "result-PDFBox18.pdf" for conformance level pdfa-1b
> dc:language :: Wrong value type. Expected type 'bag'.
> dc:date :: Wrong value type. Expected type 'seq'.
> The required XMP property 'pdfaid:part' is missing.
> The required XMP property 'pdfaid:conformance' is missing.
> A device-specific color space (DeviceGray) without an appropriate=20
> output intent is used.
> The document does not conform to the requested standard.
> The document contains device-specific color spaces.
> The document's meta data is either missing or inconsistent or corrupt.
> Done.
>
> 2:
> Validating file "result-PDFBox2.pdf" for conformance level pdfa-1b
> The file contains cross reference streams. <=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
> The file trailer dictionary is missing or invalid. <=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
> dc:language :: Wrong value type. Expected type 'bag'.
> dc:date :: Wrong value type. Expected type 'seq'.
> The required XMP property 'pdfaid:part' is missing.
> The required XMP property 'pdfaid:conformance' is missing.
> A device-specific color space (DeviceGray) without an appropriate=20
> output intent is used.
> The document does not conform to the requested standard.
> The file format (header, trailer, objects, xref, streams) is corrupted.=

> The document contains device-specific color spaces.
> The document's meta data is either missing or inconsistent or corrupt.
> Done.
>
>
>
> preflight has a similar error for 2.0 only:
> 1.4 : Trailer Syntax error, /XRef cross reference streams are not allow=
ed
>
>
> Please try this before saving:
>
>         doc.getDocument().setIsXRefStream(false);
>         COSDictionary trailer =3D doc.getDocument().getTrailer();
>         trailer.removeItem(COSName.W);
>         trailer.removeItem(COSName.DECODE_PARMS);
>         trailer.removeItem(COSName.FILTER);
>         trailer.removeItem(COSName.TYPE);
>         trailer.removeItem(COSName.INDEX);
>         trailer.removeItem(COSName.LENGTH);
>
>
> About your other question - it is unclear. Are you asking whether=20
> Overlay will be available in the future? Or do you want us to create a =

> feature like the one you did on your own?
>
> Tilman
>>
>> -anna-
>>
>> On 07.03.2016 19:19, Tilman Hausherr wrote:
>>> Could you upload two documents, one good and one bad? I'll have a=20
>>> look with PDFDebugger to find out what's wrong.
>>>
>>> Tilman
>>>
>>> Am 07.03.2016 um 16:30 schrieb Anna Taracha:
>>>> Hi,
>>>>
>>>> I am having trouble overlaying PDFs of version 1.5 (or higher) when =

>>>> using PDFBox 2.0.0-RC3. The result PDF has parameter error in it=20
>>>> according to 3-Heights=E2=84=A2 PDF Validator Online Tool. Overlayin=
g PDFs=20
>>>> of version 1.4 (PDF 1.4, PDF/A-1a and PDF/A-1b) works fine.
>>>>
>>>> To reproduce:
>>>> 1. Download pdfbox-app-2.0.0-RC3.jar
>>>> 2. Overlay two PDF(/A) documents of version 1.5 (or higher)
>>>> /- java -jar pdfbox-app-2.0.0-RC3.jar OverlayPDF doc.pdf wm.pdf=20
>>>> -position foreground result.pdf/
>>>> 3. Validate result.pdf with a PDF validator (I used 3-Heights=E2=84=A2=
 PDF=20
>>>> Validator Online Tool)
>>>>
>>>> The result of the validation is 'parameter error'. However,=20
>>>> overlaying the exact same PDFs using pdfbox-app-1.8.11.jar works=20
>>>> fine. Is there some regression in PDFBox 2.0.0-RC3 regarding=20
>>>> overlaying PDFs of version > 1.4? I tested OverlayPDF//with many=20
>>>> simple PDFs (version > 1.4) and all of them resulted in parameter=20
>>>> error when using PDFBox 2.0.0-RC3.
>>>>
>>>> I have also a question about making hyperlinks clickable in=20
>>>> overlays. I am able to do it by modifying Overlay.java but I was=20
>>>> wondering, if this feature will be available in some later release?
>>>>
>>>> Best regards,
>>>> Anna
>>>>
>>>
>>>
>>> ---------------------------------------------------------------------=

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