Sounds like a bug in XSane. I would suggest you contact it's author and see if he has a suggestion, or perhaps an updated version.
allan On Wed, Sep 26, 2012 at 10:03 AM, Ganapati Hegde <ganapati.hegde at celstream.com> wrote: > Hi , > > For new backend , we are trying to change Length unit Option in View > menu to inch or centimeter. > Geometry Feature displays TL_X [in], though option values[tl-x- etc] > are not converted to inches or centimeters based on Length Unit > selection as shown in Screenshot. Value being displayed in geometry > options (tl_x,etc) is in mm only. > [TL_X -etc ] Units are in SANE_UNIT_MM and using xsane as frontend. > Can anyone tell us how to convert based on Length unit selection ? > > Regards > Ganapati Hegde > > -----Original Message----- > From: Olaf Meeuwissen [mailto:olaf.meeuwissen at avasys.jp] > Sent: Wednesday, September 19, 2012 2:31 PM > To: Ganapati Hegde > Cc: sane-devel at lists.alioth.debian.org > Subject: Re: [sane-devel] Xsane Length unit under View menu > > Ganapati Hegde writes: > >> Hi, > > Hi > >> 1. For new backend We are trying to access the length unit of the >> geometry group for user defined paper sizes. > > Paper sizes have a name like A4 or Letter. They don't have any units, > that is, they're SANE_UNIT_NONE. > > I guess what you are trying to achieve is switching the units for a size > description that's tagged onto the name. This is not supported by SANE. > >> We see that the tl_x ,tl_y ,br_x, br_y is always set in mm, inspite of >> the UI showing text (in) as in the attached screenshot. Also is there >> any setting that we can inform Xsane to handle this? We have set the >> Lenght unit in the option descriptor as MM as we sending all values to >> XSane in mm. > > XSane has a "Length unit" option in the "View" menu that let's you pick > a preferred display unit. Internally all geometry handling is done in > terms of SANE_UNIT_MM (or SANE_UNIT_PIXEL). > >> 2. For user defined paper sizes, if we change the Geometry, the rect > in >> the preview is not getting redrawn. >> Can anyone tell us how to initiate redraw of the rectangle to reflect >> the goemetry cordinates. > > When the paper size is changed in the backend, do you update the > well-known geometry options (tl-x, etc.) too? Do you inform the > frontend that other options may have changed? > > You need to do so by or-ing in the SANE_INFO_RELOAD_OPTIONS in the last > argument to sane_control_options(), after checking that the frontend > didn't pass a NULL pointer of course. > > Hope this helps, > -- > Olaf Meeuwissen, LPIC-2 FLOSS Engineer -- AVASYS CORPORATION > FSF Associate Member #1962 Help support software freedom > http://www.fsf.org/jf?referrer=1962 > > ______________________________________________________________________________ > DISCLAIMER: This electronic message and any attachments to this electronic > message is intended for the exclusive use of the addressee(s) named herein > and may contain legally privileged and confidential information. It is the > property of Celstream Technologies Private Limited. If you are not the > intended recipient, you are hereby strictly notified not to copy, forward, > distribute or use this message or any attachments thereto. If you have > received this message in error, please delete it and all copies thereof, > from your system and notify the sender at Celstream Technologies or > administrator at celstream.com immediately. > ______________________________________________________________________________ > > -- > sane-devel mailing list: sane-devel at lists.alioth.debian.org > http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/sane-devel > Unsubscribe: Send mail with subject "unsubscribe your_password" > to sane-devel-request at lists.alioth.debian.org -- "The truth is an offense, but not a sin"
