[poppler] Annotation interoperability

[Adam Reichold]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Hello again,

Just checking up on this: So even though Poppler core always reports
NoZoom and NoRotation for text annotations, the Qt4 frontend does not
seem to enforce this yet? (Meaning a text annotation created with
flags 0 will stay that way instead of reporting as
FixedSize|FixedRotation.)

Regards, Adam.

On 05.10.2012 20:58, Albert Astals Cid wrote:
> El Divendres, 5 d'octubre de 2012, a les 20:42:36, Adam Reichold va
> escriure: Hello,
> 
> On 05.10.2012 20:17, Albert Astals Cid wrote:
>>>> El Dijous, 4 d'octubre de 2012, a les 08:11:16, Adam Reichold
>>>> va escriure: Hello,
>>>> 
>>>> On 04.10.2012 01:00, Fabio D'Urso wrote:
>>>>>>>> Maybe it is sensible to enforce one way of cropping
>>>>>>>> in the Qt4 frontend of Poppler? Not sure about this
>>>>>>>> though.
>>>>>>> 
>>>>>>> It seems to me that it's poppler rendering it
>>>>>>> incorrectly:
>>>>>>> 
>>>>>>> 1) The attached document is rendered in a completely 
>>>>>>> different way
>>>>>>> 
>>>>>>> than in acroread: we show the icon bottom-left,
>>>>>>> acroread shows it
>>>>>>> 
>>>>>>> top-left.
>>>>>>> 
>>>>>>> 2) Also, in acroread the icon always has the same size,
>>>>>>> while in poppler it scales according to the current
>>>>>>> zoom level.
>>>>>>> 
>>>>>>> I guess fixing #1 should be fairly straightforward and
>>>>>>> I'll work on it tomorrow, about #2 there's some extra
>>>>>>> work to do.
>>>> 
>>>> I think, at least for me, changing #2 would break
>>>> application behaviour: I currently try to avoid the problem
>>>> by cropping the boundary selected by the user to 24x24 at 72dpi
>>>> and transform it in the same way as the page itself so that
>>>> it matches the icon size. (Which I thought was implied by
>>>> giving it in normalized coordinates.)
>>>> 
>>>> If Poppler decides to (not) scale it like acroread, the
>>>> effective boundary at any scale factor and hence the
>>>> transformation to be applied would become different and also
>>>> specific to fixed-size icon-like annotations.
>>>> 
>>>> Not that is isn't possible, it would just introduce new
>>>> behaviour and hence necessarily new code on the application
>>>> level.
>>>> 
>>>>> Sure, but the thing is, if the current behaviour is wrong,
>>>>> it has to be fixed and apps adapted, we can't live forever
>>>>> with workarounds in the wrong place.
> 
> Yes, I agree. As I understand it, the way I currently do it may be 
> correct for the implementation but not for the standard. So the 
> implementation has to change and hence my application's dependent 
> behaviour.
> 
> It would be nice if Poppler's behaviour changed only at some 
> well-defined point in time like the release of version 0.22.
> 
> So I'll probably start to respect the FixedSize and FixedRotation 
> flags beginning with Poppler 0.22? (Meaning text annotations will 
> really be 24px times 24px from the top left corner of the boundary
> no matter what resolution I pass to Poppler::Page::renderToImage?)
> 
>> I guess Fabio can confim your question.
> 
>> About the Poppler 0.22 that is why i suggested merging the patch
>> only to master.
> 
>> Cheers, Albert
> 
> 
> Best regards, Adam.
> 
>>>>> Cheers, Albert
>>>> 
>>>> Best regards, Adam.
>>>> 
>>>> P.S.: Obviously, I am not respecting the FixedSize or 
>>>> FixedRotation flags. Does Poppler? Maybe those could be use
>>>> to convey the scaling that is done internally?
>>>> 
>>>>> _______________________________________________ poppler
>>>>> mailing list poppler at lists.freedesktop.org 
>>>>> http://lists.freedesktop.org/mailman/listinfo/poppler
>>>> 
>>>> _______________________________________________ poppler
>>>> mailing list poppler at lists.freedesktop.org 
>>>> http://lists.freedesktop.org/mailman/listinfo/poppler
> 
>> _______________________________________________ poppler mailing
>> list poppler at lists.freedesktop.org 
>> http://lists.freedesktop.org/mailman/listinfo/poppler
> _______________________________________________ poppler mailing
> list poppler at lists.freedesktop.org 
> http://lists.freedesktop.org/mailman/listinfo/poppler
> 
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.19 (GNU/Linux)
Comment: Using GnuPG with Mozilla - http://www.enigmail.net/

iQEcBAEBAgAGBQJQbzGjAAoJEPSSjE3STU34CEMIAKoDaiu+tPcYNImEq6GwKhE7
zJc646YpHvB2CPYYkHHIDjSucqHy1+gDSVdlDLky423mpQRHdvGrAFENvFv2XbBa
VWofz8+McdIcLGyrId8xz9g3uKHrZAYS2oyO8htlDX/NVcgokbRuS1NoJ3TOzRbV
mIrFuRuhIq0te66XAvsSLDRbj0f3hzxPT3+V08fOH9K8Tg/PY2Yc+AreUCPbXUMV
aZ5d6Rm9nUWmrBpHlrbJu6CjYqPxNijGZzjUydkPx381s+PJaaoyawVF+Xb2qNmE
AUkW0BFxMgpzhBYt5QTqMgNemxGggYaw1eInmCK01q4FpacWLvZZfEXWiv6SsPk=
=jc1d
-----END PGP SIGNATURE-----