Re: Re: CD printing to R300

   From: James Cort <jim@xxxxxxxxxxxxxxxx>
   Date: Sat, 31 Jul 2004 09:15:38 +0000

   On Saturday 31 July 2004 01:15, Robert L Krawitz wrote:
   > Done, although I used 16 mm rather than 15 mm just to be on the safe
   > side.  It's a separate option.
   >
   > Perhaps we should add microadjustments; as I recall, Epson recommends
   > it.

   Indeed, Epson's software offers a fair bit of flexibility in this
   area - you can alter the size of the centre hole to whatever you
   like, and move the whole image around by about 5 millimetres in
   each direction.

So this isn't quite as straightforward as I had hoped.  We could make
the hole size be a floating point parameter, but then we have the
issue of what unit to use.

The business card wouldn't be too hard to do, and wouldn't need any
incompatible change.

The best way to fix this would probably be to add another parameter
type representing a linear dimension (STP_PARAMETER_TYPE_DIMENSION).
This would be a change to the API, probably a binary incompatible one
since it would require STP_PARAMETER_TYPE_INVALID to change its value.
It also means that a lot of things would need to change in order that
this parameter could be used.  At this point in the release cycle, we
need to agree as a team that this is the right thing to do.

My thought is that an option of type STP_PARAMETER_TYPE_DIMENSION
would export the bounds and default in points (1/72"), since that's
the standard base unit within Gimp-Print.  User interfaces could
display this as they please; the GIMP plugin would presumably use a
slider, but with the units translated into whatever the prevailing
units are.  The CUPS PPD files would display the choices converted
into the locale-appropriate unit.

Is this something we should do at this point?

-- 
Robert Krawitz                                     <rlk@xxxxxxxxxxxx>

Tall Clubs International  --  http://www.tall.org/ or 1-888-IM-TALL-2
Member of the League for Programming Freedom -- mail lpf@xxxxxxxxxxxx
Project lead for Gimp Print   --    http://gimp-print.sourceforge.net

"Linux doesn't dictate how I work, I dictate how Linux works."
--Eric Crampton


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