[Portland] xdg-screensaver.in

[Bryce Harrington]

I know Waldo asked this question before[1] a couple months ago, but it
didn't get answered before, and I'm hoping maybe someone knows better
now...  

Does anyone know if there's a way to determine if the screensaver is
currently on or off?  E.g., query the status of xset s on/off.

I'm working on writing a unit test for the xdg-screensaver.in script,
and need a method for determining if its functions are operating
correctly.  Pretty much, this just means detecting if the screensaver is
on or off.  I've googled and manned around but can't find a tool which
would provide this info.  Anyone know of any other places I could check?

Looking at the xset source code[2], it looks like we need an X routine
like XActivateScreenSaver()[3] but that returns the current saver state
instead of setting it.  Does XGetScreenSaver return this info in one of
its args?

Any other ideas?  I'd hate to leave xdg-screensaver testless...

1: http://lists.osdl.org/pipermail/desktop_architects/2006-February/000800.html
2: http://webcvs.freedesktop.org/xorg/xc/programs/xset/xset.c?rev=1.9&view=markup
3: http://tronche.com/gui/x/xlib/window-and-session-manager/screen-saver.html
4: http://www.die.net/doc/linux/man/man3/xactivatescreensaver.3.html

Thanks,
Bryce

On Mon, May 08, 2006 at 07:47:21PM -0700, Bryce Harrington wrote:
> First cut at the screensaver script.  I sorted out a simple way to do
> the screensaver suspend, but there might be a better way (open to
> suggestions.)  I also implemented the other obvious functionality -
> plain disable/enable, and immediate on/off.
> 
> I also wasn't sure how to do the screensaver ops for gnome - perhaps the
> xset approach is sufficient?  
> 
> Bryce
> 
> 
> 
> #!/bin/sh
> #---------------------------------------------
> #   xdg-screensaver
> #
> #   Utility script to enable/disable screensaver.
> #
> #   Refer to the usage() function below for usage.
> #
> #   Copyright 2006, Bryce Harrington <bryce at osdl.org>
> #
> #   LICENSE:
> #
> #---------------------------------------------
> 
> # Default value for delay when suspending screensaver
> DELAY=60m
> 
> examples()
> {
> cat << _EXAMPLES
> _EXAMPLES
> }
> 
> usage()
> {
> cat << _USAGE
> _USAGE
> }
> 
> #@xdg-utils-common@
> 
> screensaver_xset()
> {
>     TIMEOUT=`xset q | /bin/grep -A 2 ^Screen | /bin/grep timeout | awk '{print $2}'` 
>     DPMS=`xset q | /bin/grep 'DPMS is' | awk '{print $3}'` 
> 
>     if [ "$DPMS" = "Enabled" ]; then
>         DPMS="+dpms"
>     else
>         DPMS="-dpms"
>     fi
> 
>     case "$1" in
>         suspend)
>         delay=${2:-$DELAY}
>         xset s off -dpms && sleep $delay && xset s default &
>         ;;
> 
>         restore)
>         # Restores screensaver to its default settings
>         xset s default "$DPMS"
>         ;;
> 
>         enable)
>         # Allows the screensaver to start automatically
>         xset s on "$DPMS"
>         ;;
> 
>         disable)
>         # Prevents screensaver from starting automatically
>         xset s off -dpms
>         ;;
> 
>         activate)
>         # Turns the screensaver on right now
>         xset s activate
>         ;;
> 
>         reset)
>         # Turns the screensaver off right now
>         xset s reset
>         ;;
> 
>         status)
>         if [ $timeout -eq 0 ]; then
>             echo "disabled"
>         else
>             echo "enabled"
>         fi
>         ;;
>     esac
> 
>     if [ $? -eq 0 ]; then
>         exit_success
>     else
>         exit_failure_operation_failed
>     fi
> }
> 
> screensaver_kde()
> {
>     case "$1" in
>         suspend) 
>         delay=${2:-$DELAY}
>         dcop kdesktop KScreensaverIface enable false > /dev/null && \
>             sleep $delay && \
>             dcop kdesktop KScreensaverIface configure > /dev/null &
>         ;;
> 
>         restore)
>         dcop kdesktop KScreensaverIface configure
>         ;;
>         
>         enable)
>         dcop kdesktop KScreensaverIface enable false > /dev/null
>         ;;
>         
>         disable)
>         dcop kdesktop KScreensaverIface enable true > /dev/null
>         ;;
> 
>         activate)
>         # Turns the screensaver on right now
>         dcop kdesktop KScreensaverIface save
>         ;;
> 
>         reset)
>         # Turns the screensaver off right now
>         dcop kdesktop KScreensaverIface quit
>         ;;
> 
>         status)
>         status=`dcop kdesktop KScreensaverIface isEnabled`
>         if [ status = 'true' ]; then
>             echo "enabled"
>         elif [ status = 'false' ]; then
>             echo "disabled"
>         else
>             echo "ERROR:  kdesktop KScreensaverIface isEnabled returned '$status'"
>             exit_failure_operation_failed
>         fi
>         ;;
> 
>         *)
>         echo "ERROR:  Unknown command '$1"
>         exit_failure_operation_failed
>         ;;
>     esac
> 
>     if [ $? -eq 0 ]; then
>         exit_success
>     else
>         exit_failure_operation_failed
>     fi
> }
> 
> screensaver_gnome()
> {
> # TODO
> 
>     if [ $? -eq 0 ]; then
>         exit_success
>     else
>         exit_failure_operation_failed
>     fi
> }
> 
> [ x"$1" != x"" ] || exit_failure_arg_count
> 
> 
> # Always set the Xorg screensaver first
> screensaver_xset "$1" "$2"
> 
> # Just in case, also do the desktop environment's screensaver
> case "$DE" in
>     kde)
>     screensaver_kde  "$1" "$2"
>     ;;
> 
>     gnome)
>     screensaver_gnome "$1" "$2"
>     ;;
> 
> esac
> _______________________________________________
> Portland mailing list
> Portland at lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/portland