Feature request/enquiry: Overprint support

[Bernard Gray]

> poppler does have overprinting support (to a certain extent).  See for example
> the manpage of pdftops.

Thanks Oliver, that's great information -

On Wed, 31 May 2023 at 02:10, Oliver Sander <oliver.sander at tu-dresden.de> wrote:
> ...
> > Maybe open a feature request at bugs.kde.org -- that's more easily kept track of.
>
> That I think is still a good idea.

Turns out, there was already a bug raised in 2006(!):
https://bugs.kde.org/show_bug.cgi?id=126942

I've added links back to this mailing list thread - is there any way I
am able to raise the profile of this ticket to get it looked at
(beyond having this discussion)?

Regards,
Bernie

>
> Best,
> Oliver
>
> >
> > Cheers,
> > Oliver
> >
> >
> > On 29.05.23 21:49, Laura David Hurka wrote:
> >> Hi Bernard,
> >>
> >> I don’t know exactly what overprinting is, or what your requirements are.
> >> I understand it as a feature similar to PDF layers.
> >> Okular has a side panel for layers, you can try it with the last page of what
> >> a quick internet search gave me:
> >>
> >> https://www.edcfiresafe.org/wp-content/uploads/2015/12/Using-Layerd-PDFs-with-Sample-Map.pdf
> >>
> >> I assume your requirement is to display the document correctly, only on your
> >> screen of your local desktop computer.
> >>
> >> My conclusion is that Poppler (the PDF library normally used by Okular) will
> >> need to support “overprinting”.
> >> If a user interface is necessary, that should be a sensible addition to
> >> Okular, similar to how layers already have a user interface.
> >>
> >> Cheers, David
> >>
> >>> Hi everyone,
> >>>
> >>> We are currently supporting a very old version of 32 bit adobe reader on
> >>> our ubuntu 22.04/kde desktops, due to the requirement for support for a PDF
> >>> feature called "Overprint" which is used by our label printing supplier (I
> >>> work for an Australian winery)
> >>>
> >>> [...]
> >>>
> >>> Is this feature something Okular would be interested in developing?
> >>
> >>
> >>


On Wed, 31 May 2023 at 02:10, Oliver Sander <oliver.sander at tu-dresden.de> wrote:
>
> > Bernard, can you explain more precisely what it is that you need?
> > Without it I don't think you will get a better answer.
>
> Sorry for this: I just found your last email which gives more information.
> Let me digest those first.
>
> > Maybe open a feature request at bugs.kde.org -- that's more easily kept track of.
>
> That I think is still a good idea.
>
> Best,
> Oliver
>
> >
> > Cheers,
> > Oliver
> >
> >
> > On 29.05.23 21:49, Laura David Hurka wrote:
> >> Hi Bernard,
> >>
> >> I don’t know exactly what overprinting is, or what your requirements are.
> >> I understand it as a feature similar to PDF layers.
> >> Okular has a side panel for layers, you can try it with the last page of what
> >> a quick internet search gave me:
> >>
> >> https://www.edcfiresafe.org/wp-content/uploads/2015/12/Using-Layerd-PDFs-with-Sample-Map.pdf
> >>
> >> I assume your requirement is to display the document correctly, only on your
> >> screen of your local desktop computer.
> >>
> >> My conclusion is that Poppler (the PDF library normally used by Okular) will
> >> need to support “overprinting”.
> >> If a user interface is necessary, that should be a sensible addition to
> >> Okular, similar to how layers already have a user interface.
> >>
> >> Cheers, David
> >>
> >>> Hi everyone,
> >>>
> >>> We are currently supporting a very old version of 32 bit adobe reader on
> >>> our ubuntu 22.04/kde desktops, due to the requirement for support for a PDF
> >>> feature called "Overprint" which is used by our label printing supplier (I
> >>> work for an Australian winery)
> >>>
> >>> [...]
> >>>
> >>> Is this feature something Okular would be interested in developing?
> >>
> >>
> >>