[sane-devel] Well known sensor

[Étienne Bersac]

Hi,

I read a bit the fujitsu backend source (sadly, i don't have such fuji
scanners). The sensor handling is exactly what i asked for :D !!

Each sensor is named "button-<id>" and <id> is not a number but
something like "send", "scan", etc. :) That is PER - FECT :D

I just suggest to expand this behaviour for each backend :

      * Prefix sensor with "button-"
      * Use semantic name
              * "send" for button "send to", "mail", "mail to" or with a
                mail icon on the device
              * "scan" for button triggering the scan
              * "duplex" for duplex switch
              * "powersave" once the scanner enter powersave state
              * "adfopen" once the ADF is opened
              * "paperin" once paper is inserted either in sheetfed
                scanner or ADF.
              * "auto" for blank button that mean either "scan" or
                "cancel" depending on the current stage.
              * other may come, of course

greping the source tree, backends plusteck, hp3900 and pixma use
"button-%d" or similar. Would be nice to have semantic button instead.

Can we publish a document describing such well known sensors ? This is a
tiny incremental evolution of SANE that can make a really good
difference for end user.

Regards,
Étienne.