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From: Michael S. <ms...@ms...> - 2021-09-21 15:17:42
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Till,
The point should not be to propagate hundreds or thousands of printer-specific knobs to trip up the user (even expert users!)
It makes more sense to provide a Gutenprint-specific web UI that allows (expert) users to do test prints and tweak those knobs. Once you are happy with the settings, save them with a name ("Bob's Photo Preset") and expose the presets as single vendor extension attribute, which then shows up in the print dialog.
> On Sep 21, 2021, at 10:01 AM, Till Kamppeter <til...@gm...> wrote:
>
> On 21/09/2021 02:28, Robert Krawitz wrote:
>>> Note that the retro-fit is not perfect, especially due to the restricted number of vendor-specific
>>> options in PAPPL I could base my Printer Application only on the simplified PPDs and not on the
>>> expert ones.
>> What restriction is this?
>
> PAPPL only allows a fixed (hard-coded) maximum number of vendor-specific options (PAPPL_MAX_VENDOR = 32) in addition to the standard IPP options for a printer. The number of options in the expert PPD files is too large for this limit.
>
> What I could do is that in the Snap I could build PAPPL with a higher limit (Snaps bring their own libraries).
>
> Till
>
________________________
Michael Sweet
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