Fw: Re: Fwd: Re: Xounal PDF Quality

[Patrick Dupre]

Hello,

I am passing you this email exchange.
You may consider to update xournal at the end.

Thank.

===========================================================================
 Patrick DUPRÉ                                 | | email: [e-mail]
 Laboratoire de Physico-Chimie de l'Atmosphère | |
 Université du Littoral-Côte d'Opale           | |
 Tel.  (33)-(0)3 28 23 76 12                   | | Fax: [phone]
 189A, avenue Maurice Schumann                 | | 59140 Dunkerque, France
===========================================================================
> Sent: Sunday, February 07, 2016 at 7:52 PM
> From: "Denis Auroux" 
> To: "Patrick Dupre" 
> Subject: Re: Fwd: Re: Xounal PDF Quality
>
> Hi Patrick,
>
> Glad to hear that "legacy PDF export" solves the issue for you.  The 
> official Fedora package is likely to be based on official 0.4.8 (hence, 
> a year old and not correcting all the bugs), though I don't know what 
> exactly they might or might not have fixed in the -4 package iteration. 
>   So you'd need to uninstall it and compile manually instead from 
> GIT/CVS if you really wanted to -- but it sounds like you don't need to...
> Best,
> Denis
>
> On 02/07/2016 10:49 AM, Patrick Dupre wrote:
> > > Hi Andreas + Patrick,
> > >
> > > Very strange and surprising. Two comments:
> > > are you using the plain official 0.4.8 release, or a more recent
> > >
> > > version compiled from the GIT or CVS repositories on sourceforge ?
> >
> > xournal-0.4.8-3.fc22.x86_64
> >   The
> > > GIT/CVS version corrects a bug in PDF export that most visibly resulted
> > > in loss of quality of scanned images inside PDFs, but might also affect
> > > other aspects of PDFs as well. So: if you are using the 'normal' 0.4.8
> > > release, please try upgrading to the latest cvs/git version and see if
> > > it fixes the issue.
> >
> > This is the version of the distribution
> > I do not think that the last update:
> > xournal-0.4.8-4.fc23.x86_64.rpm would be different.
> > > in 0.4.8 there are two methods of exporting PDFs, the new one is used
> > >
> > > by default and should be better (apart from the serious loss of image
> > > resolution bug that was fixed in GIT/CVS and perhaps also the issue you
> > > just reported?), but you can also try the older one by selecting Options
> > > -> Legacy PDF export.
> > > When selected, the exported PDF should be much more faithful to the
> > > original whenever possible (but export will fail with certain PDF
> > > files), so I imagine the problem you report will certainly go away.
> >
> > Yes you are right
> > > The default ("new") PDF export option loads the existing PDF using
> > > poppler/cairo -- same libraries used by evince and other PDF viewers --
> > > and prints it to a new PDF with the annotations on top. (The bug
> > > corrected in cvs/git was that we forgot to specify optimal print quality
> > > settings when doing this printing, which caused some quality loss in
> > > some cases). The old ('legacy') PDF export hacks into the existing PDF
> > > code and adds the annotations to the existing pages, without any
> > > modification or "re-distilling" of the existing PDF, so it is more
> > > faithful when it works, but it fails for various kinds of
> > > encrypted/compressed PDF files.)
> > >
> > > Denis
> > >
> > > On 02/07/2016 08:16 AM, Andreas Butti wrote:
> > > > Hi Denis
> > > >
> > > > Patrick Dupre wrote me a mail, there is a Bug in the PDF export in
> > > > Xournal. It seems there is a problem with the stroken width.
> > > >
> > > > Do you know this problem?
> > > > Do you may have a look at it?
> > > >
> > > > Thank you.
> > > >
> > > > Andreas
> > > >
> > > > -------- Weitergeleitete Nachricht --------
> > > > Betreff: 	Re: Xounal PDF Quality
> > > > Datum: 	Sat, 6 Feb 2016 21:32:04 +0100
> > > > Von: 	Patrick Dupre 
> > > > An: 	[e-mail]
> > > >
> > > > Hello,
> > > > I am attaching 2 files demonstrating the issue.
> > > >
> > > > ===========================================================================
> > > > Patrick DUPRÉ | | email: [e-mail]
> > > > Laboratoire de Physico-Chimie de l'Atmosphère | |
> > > > Université du Littoral-Côte d'Opale | |
> > > > Tel. (33)-(0)3 28 23 76 12 | | Fax: [phone]
> > > > 189A, avenue Maurice Schumann | | 59140 Dunkerque, France
> > > > ===========================================================================
> > > > *Sent:* Saturday, February 06, 2016 at 8:34 PM
> > > > *From:* [e-mail]
> > > > *To:* [e-mail]
> > > > *Subject:* Xounal PDF Quality
> > > >
> > > > Hi
> > > >
> > > > First: I couldn’t answer to your mail, because SF was down...
> > > >
> > > > Xournal shouldn't change the Image quality...
> > > >
> > > > I cannot help you now, you may write to the mailing list:
> > > > https://sourceforge.net/p/xournal/mailman/xournal-devel/
> > > >
> > > > You may also would like to try out Xournal++, it's a rewrite of Xournal,
> > > > it can open your .xoj files.
> > > > https://github.com/xournalpp/xournalpp
> > > >
> > > > But I cannot guaranty that this will work better for your case.
> > > >
> > > > Only one idea: If you print your existing PDf to a PDF printer, it may
> > > > fix the problem. (If the PDF was faulty, you never know...)
> > > >
> > > > This message was sent to you via the SourceForge web mail form.
> > > > You may reply to this message directly, or at
> > > > http://sourceforge.net/u/andreasb123/profile/send_messagehttp://sourceforge.net/u/andreasb123/profile/send_message
> > >
> > > --
> > > Denis Auroux
> > > University of California, Berkeley      [e-mail]
> > > Department of Mathematics               Tel: [phone]
> > > 817 Evans Hall # 3840                   Fax: [phone]
> > > Berkeley, CA 94720-3840
>
> -- 
> Denis Auroux
> UC Berkeley, Department of Mathematics
> 817 Evans Hall, Berkeley CA 94720-3840, USA
> [e-mail]