Ubuntu – Command to determine whether a fullscreen application is running

bashcommand linefullscreen

I have a small shell script that plays a little jingle and displays a notification whenever I get a new email.

The problem is that this shell script can get invoked anytime – including when I'm watching a DVD / video in fullscreen mode with the sound turned up quite a bit – which is quite annoying.

I'd like to enhance this script with the ability to detect whether an application is in fullscreen mode. I know this must be somehow possible because notifications don't display under those circumstances.

What command can I use?

Best Answer

Kind of extreme overkill as a shell script, but it should do the trick:

WINDOW=$(echo $(xwininfo -id $(xdotool getactivewindow) -stats | \
                egrep '(Width|Height):' | \
                awk '{print $NF}') | \
         sed -e 's/ /x/')
SCREEN=$(xdpyinfo | grep -m1 dimensions | awk '{print $2}')
if [ "$WINDOW" = "$SCREEN" ]; then
    exit 0
    exit 1

Then you can check it:

if is-full-screen ; then echo yup, full screen ; fi

As pointed out below, you'll need to install xdotool first:

sudo apt-get install xdotool
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