Transparent images provoke popup when exporting to PDF in headless configurations

[David Ayers]

Binary package hint: unoconv

When converting files which contain transparent images a pop up is displayed:
During PDF export the following problems occurred:
PDF/A transparency
PDF/A forbids transparency a transparent object was painted opaque instead.

and that pop up waits for the user to press 'OK' therefor interrupting batch processing.

I'm not sure whether a separate conversion step is needed to convert odf to odf making transparent images opaque or whether it would be easier to add an option to always acknowledge implicit conversions.

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: unoconv 0.3-6
ProcVersionSignature: Ubuntu 2.6.35-28.49-generic 2.6.35.11
Uname: Linux 2.6.35-28-generic x86_64
Architecture: amd64
Date: Fri Mar 25 09:54:36 2011
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
PackageArchitecture: all
ProcEnviron:
 PATH=(custom, user)
 LANG=de_AT.utf8
 SHELL=/bin/bash
SourcePackage: unoconv

[dag (dag-wieers)]

On Fri, 25 Mar 2011, David Ayers wrote:

> Public bug reported:
>
> Binary package hint: unoconv
>
> When converting files which contain transparent images a pop up is displayed:
> During PDF export the following problems occurred:
> PDF/A transparency
> PDF/A forbids transparency a transparent object was painted opaque instead.
>
> and that pop up waits for the user to press 'OK' therefor interrupting
> batch processing.
>
> I'm not sure whether a separate conversion step is needed to convert odf
> to odf making transparent images opaque or whether it would be easier to
> add an option to always acknowledge implicit conversions.

This is in fact a bug in OpenOffice. We cannot do anything about such
behaviour in OpenOffice.

--
-- dag wieers, <email address hidden>, http://dag.wieers.com/
-- dagit linux solutions, <email address hidden>, http://dagit.net/

[Any errors in spelling, tact or fact are transmission errors]

[David Ayers (ayers)]

Thanks for the reply!

So should this be reassigned and converted to a feature request?
Should it be assigned both to LibreOffice and OpenOffice.org?
What would be the plan to make progress here?

[David Ayers (ayers)]

Reassign to libreoffice:
When a file containing transparent images is exported as a PDF a popup warning is displayed that needs to be confirmed. This popup causes headless script processing as is done by unoconv to fail.
There should be a way to scripts like unoconv to confirm this warning without failing do to missing GUI elements.

[penalvch (penalvch)]

David Ayers, thank you for reporting this bug and helping make Ubuntu better. Could you please provide an example LibreOffice file and accompanying script, that when pasted into the Terminal or launched as a file, duplicates this error message?

[David Ayers (ayers)]

Thanks Christopher!

I just updated my Natty installation to create a simple file to reproduce the issue but current Natty libreoffice packages do not display the popup anymore!

I can now convert all files with Natty beta.

Sorry for the noise.

[David Ayers (ayers)]

This issue does not exist in current packages of libreoffice.