# Re: Xsane-0.55: scan resolution selection (Epson 1200S, CVS Sane)

From: Oliver Rauch (oliver.rauch@Wolfsburg.DE)
Date: Sat Feb 19 2000 - 09:50:12 PST

- Next message: Chris Pinkham: "Re: backend fork/reader-process <-> sane_read"
  - Previous message: Oliver Rauch: "Re: xsane bugs / suggestions"
  - In reply to: Karl Heinz Kremer: "Re: Xsane-0.55: scan resolution selection (Epson 1200S, CVS Sane)"
  - Next in thread: Dave Hill: "Re: Xsane-0.55: scan resolution selection (Epson 1200S, CVS Sane)"
  - Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

  Karl Heinz Kremer wrote:

  > On Sat, Feb 19, 2000 at 01:23:49PM +0100, Oliver Rauch wrote:
  > > Hello Karl Heinz,
  > >
  > > the sane standard defines only one "resolution" as well known option.
  > > It does not make sense to have a "preview resolution" option because
  > > the frontend has to set the correct resolution in each case and like defined
  > > in the standard xscanimage and xsane do set the option "resolution".
  > >
  > > If the preview resolution option is removed from the epson backend
  > > everything will work fine.
  >
  > OK, so let me see if I understand this correctly: I don't have to set
  > the preview resolution in the backend, this is done in the frontend.
  > Therefore it does not make sense to have a "preview resolution" selection.

  It does not matter if you do a preview or a real scan, the option
  "resolution" always defines the resolution.

  > If this assumtion is correct I can remove the preview resolution.
  > I do however doubt that "everything will work fine" after I remove
  > that option. You still don't know which resolutions are supported
  > by the scanner if I implement the resolution option as a range vs.
  > as a list. So the resolution list will still display a "synthetic"
  > set of resolutions.

  If the scanner only supports a list of resolutions create a
  Word_List of the type SANE_Int instead of a range.
  (there are already some backends that do so).

  A range only makes sense if the scanner is able to scan
  with almost all resolutions the user can select.

  Bye
  Oliver

      --
      Homepage:       http://www.wolfsburg.de/~rauch
      sane-umax:      http://www.wolfsburg.de/~rauch/sane/sane-umax.html
      xsane:          http://www.wolfsburg.de/~rauch/sane/sane-xsane.html
      E-Mail:         mailto:Oliver.Rauch@Wolfsburg.DE
      --
      Source code, list archive, and docs: http://www.mostang.com/sane/
      To unsubscribe: echo unsubscribe sane-devel | mail majordomo@mostang.com

  - Next message: Chris Pinkham: "Re: backend fork/reader-process <-> sane_read"
  - Previous message: Oliver Rauch: "Re: xsane bugs / suggestions"
  - In reply to: Karl Heinz Kremer: "Re: Xsane-0.55: scan resolution selection (Epson 1200S, CVS Sane)"
  - Next in thread: Dave Hill: "Re: Xsane-0.55: scan resolution selection (Epson 1200S, CVS Sane)"
  - Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

  This archive was generated by hypermail 2b29 : Sat Feb 19 2000 - 09:49:27 PST