[poppler] UserUnit

[Albert Astals Cid]

El dijous, 20 de desembre de 2018, a les 15:28:18 CET, thomas.karthe at daimler.com va escriure:
> Hi all,

Hi

> I found some inconsistency in page size for a PDF document. Included Document was created from Siemens NX and uncompressed.
> Original document page 1 has 1189mm height and 6769mm width.
> Acrobat Reader shows correct size.
> PDFInfo shows:   Page size: 9593.86 x 1685.2 pts which is 595.5mm width and  3384.5mm height (factor 2 each)
> 
> After decompressing the PDF I found
> <</MediaBox[0 0 9593.86 1685.2]/UserUnit 2/Resources 2 0 R/Contents 9 0 R/Parent 7 0 R/Type/Page>>
> Playing with UserUnit value it comes clear, that it needs to be multiplied to mediabox values to get correct size.
> 
> In poppler API I find nothing about UserUnit or something that could reflect this value.
> From my understanding each page should have a property UserUnit.

Yes, this is a bug. Please open an issue at https://gitlab.freedesktop.org/poppler/poppler/issues 

Ideally provide a patch at https://gitlab.freedesktop.org/poppler/poppler/merge_requests ;) it should really be that hard, just parse the UserUnit entry in the Page object and then use it where sizes are converted to inches/cm

Cheers,
  Albert

> 
> Mit freundlichen Grüßen / Kind regards / शुभकामनायें
> Thomas Karthe
> 
> 
> If you are not the addressee, please inform us immediately that you have received this e-mail by mistake, and delete it. We thank you for your support.
> 
>