[Printing-architecture] How to request "Media Limits: ..." on job-sheets to print mm instead of inches?

[Printing-architecture] How to request "Media Limits: ..." on job-sheets to print mm instead of inches?

[Kurt Pfeifle]

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I have a print queue installed via "lpadmin ... -m everywhere". This
auto-generated a PPD with a line for the printable area saying

   *ImageableArea A4: "11.990551181102 11.990551181102 583.285039370079
829.899212598425"

When I request job-sheets to be printed the respective line on the printed
sheet reads

   Media Limits: 0.17 x 0.17 to 8.10 x 11.53 inches

What should I do to get this Info given in millimeters instead of inches?

I tried adding a line of "DefaultLanguage de" to cupsd.conf and restarted
the service. But this didn't change the printed line on the job-sheet (not
even the English *"Media Limits" *changed -- but I do not care so much
about that).

P.S.: Is this currently the right forum to ask such questions? I searched
OpenPrinting's github, but couldn't figure it out there, and I didn't want
to open an issue (yet).

Thanks, Kurt.

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Re: [Printing-architecture] How to request "Media Limits: ..." on job-sheets to print mm instead of inches?

[Till Kamppeter]

On 10/12/2023 21:19, Kurt Pfeifle wrote:
> I have a print queue installed via "lpadmin ... -m everywhere". This 
> auto-generated a PPD with a line for the printable area saying
> 
>     *ImageableArea A4: "11.990551181102 11.990551181102 583.285039370079 
> 829.899212598425"
> 
> When I request job-sheets to be printed the respective line on the 
> printed sheet reads
> 
>     Media Limits: 0.17 x 0.17 to 8.10 x 11.53 inches
> 
> What should I do to get this Info given in millimeters instead of inches?
> 
> I tried adding a line of "DefaultLanguage de"to cupsd.conf and restarted 
> the service. But this didn't change the printed line on the job-sheet 
> (not even the English /"Media Limits" /changed -- but I do not care so 
> much about that).
> 
> P.S.: Is this currently the right forum to ask such questions? I 
> searched OpenPrinting's github, but couldn't figure it out there, and I 
> didn't want to open an issue (yet).

I think, this functionality of displaying sizes and margins in mm on 
test and banner pages is really missing. It should either find the 
locale or simply output two lines, one for inches and another for mm.

The program generating the banners nowadays is the bannertopdf filter of 
cups-filters, which in the latest cups-filters (2.x uses the 
cfFilterBannerToPDF() filter function of libcupsfilters, so it would be 
a feature request for libcupsfilters, to be reported as issue on GitHub ...

    Till