undersanding xfce panel position

Misko_2083 · 2018-04-10 15:09:03

How does the xfce4-panel stores position and coordinates?

With the xfconf-query on an 1920x1080 screen the output is:
xfconf-query -c xfce4-panel -p /panels -l -v
/panels/panel-1/position p=8;x=960;y=1064

What is p and where is this point with coordinates x,y?

wmctrl, xdotool and xwininfo give different values about the panel window position.

If I run this script while the mouse pointer is positioned on the panel...

#!/bin/bash
# Get current mouse position
out="$(xdotool getmouselocation)"
out=(${out//[^0-9 ]/})

# xdotool getmouselocation returns a decimal window id and wmctrl gives a hexadecimal id.
WindowID=$(printf "0x%08x" ${out[3]})

(echo wmctl; wmctrl -l -G | grep $WindowID; \
echo xdotool; xdotool getwindowgeometry $WindowID ; \
echo xwininfo; xwininfo -id $WindowID \
|  sed -n -e "s/^ \+Absolute upper-left X: \+\([0-9]\+\).*/x=\1/p" -e "s/^ \+Absolute upper-left Y: \+\([0-9]\+\).*/y=\1/p" -e "s/^ \+Width: \+\([0-9]\+\).*/w=\1/p" -e "s/^ \+Height: \+\([0-9]\+\).*/h=\1/p") |
yad --width=500 --height=500 --text-info

...The panel has absolute coordinates 0 1049 and with and height 1920 31.

wmctl
0x01600004 -1 0    1049 1920 31   p64 xfce4-panel
xdotool
Window 23068676
  Position: 0,1049 (screen: 0)
  Geometry: 1920x31
xwininfo
x=0
y=1049
w=1920
h=31

The xfconf-query ouputs panel legth in percentage and with the panel there size seems to be 1 pixel reserved for something (maybe border or auto-hide). Mode could be horizontal, vertical and deskbar (0,1,2)

xfconf-query -c xfce4-panel -p /panels -l -v
/panels                           <<UNSUPPORTED>>
/panels/panel-1/background-image  /usr/share/images/desktop-base/Untitled2x.png
/panels/panel-1/background-style  0
/panels/panel-1/length            100
/panels/panel-1/mode              0
/panels/panel-1/plugin-ids        <<UNSUPPORTED>>
/panels/panel-1/position          p=8;x=960;y=1064
/panels/panel-1/position-locked   true
/panels/panel-1/size              30
/panels/panel-2/autohide          true
/panels/panel-2/background-alpha  0
/panels/panel-2/background-image  /usr/share/images/desktop-base/Untitled2x-v.png
/panels/panel-2/background-style  0
/panels/panel-2/length            30
/panels/panel-2/length-adjust     true
/panels/panel-2/mode              2
/panels/panel-2/nrows             1
/panels/panel-2/plugin-ids        <<UNSUPPORTED>>
/panels/panel-2/position          p=7;x=25;y=497
/panels/panel-2/position-locked   true
/panels/panel-2/size              36

ToZ · 2018-04-10 18:47:29

The p value is the position taken from this enum where 0 is none and the rest are filled in incrementally.

My understanding is that the x and y values are only relevant if the position is not fixed (ie. 0, 13 or 14).

Misko_2083 · 2018-04-11 11:40:33

Thank you very much ToZ.

This "directional navigation" looks like relative positioning with numbers 1-12 on the screen edges or corners and 0, 13, 14 when the panel is floating.
I thought I can find out which panel has been under mouse pointer based on absolute position and size from xwininfo.

The yad dialogs are very hard to position close to notification icon.
It's much easier if I split the screen size into relative position boxes (zones), compare that with the notification icon position and make adjustments based on that info. Although not perfect. smile

#!/bin/bash

# alsa volume notification icon

ERR(){ echo "ERROR: $1" 1>&2; }

declare -i DEPCOUNT=0
for DEP in /usr/bin/{xdotool,yad,notify-send}; {
	[ -x "$DEP" ] || {
		ERR "$LINENO Dependency '$DEP' not met."
		DEPCOUNT+=1
	}
}
[ $DEPCOUNT -eq 0 ] || exit 1

export YAD_AUDIO=$(mktemp -u --tmpdir YAD_AUDIO.XXXXXXXX)
mkfifo "$YAD_AUDIO"
trap "rm -f $YAD_AUDIO" EXIT

function get_volume(){
vol=$(amixer get Master | grep "\[on\]\|\[off\]")
vol=( $vol )
# Fredx181 check for pulseaudio
 [ $(pidof pulseaudio) ] && CURVOL=$(echo ${vol[4]} | sed 's/[][%]//g') || CURVOL=$(echo ${vol[3]} | sed 's/[][%]//g')
}
export -f get_volume

YAD_AUDIO_audio(){

 # set window class
 YAD_CLASS="YAD_AUDIO"

 # Unmap the window if the script is relaunched
 # This closes the window if notification icon is clicked while the popup window is in focus
   pids="$(xdotool search --class "$YAD_CLASS")"
   wpid="$(xdotool getwindowfocus)"

   for pid in $pids; do
        # Compares window class pid with the pid of a window in focus
        if [[ "$pid" == "$wpid" ]]; then
           xdotool windowunmap $pid &>/dev/null
           exit 1
        fi
   done

get_volume

# Format xrandr output
xrandr="$(xrandr | grep -w "connected" | grep -o "[0-9]\+x[0-9]\++[0-9]\++[0-9]\+" | tr "x+" " " | sort -nk 4)"
# Get num of monitors
num_screens=$(echo "$xrandr" |  wc -l)
[ "$num_screens" -gt 2 ] && echo "Script cannot deal with more than 2 monitors" >&2 && exit 1
# Get screen resolution
screen_left=($(echo "$xrandr" | head -1))
[ "$num_screens" -gt 1 ] && screen_right=($(echo "$xrandr" | tail -1))

# Get current mouse position
out="$(xdotool getmouselocation)"
out=(${out//[^0-9 ]/})
current_x="${out[0]}"
current_y="${out[1]}"

# Calculate current monitor and relative position to this monitor
if [ "$num_screens" -gt 1 ] && [ "$current_x" -gt "${screen_right[2]}" ]; then
	current_screen=(${screen_right[*]})
	current_x=$(($current_x-${screen_right[2]}))
else 
	current_screen=(${screen_left[*]})
fi

# Check relative position
if [ "$current_y" -lt "$((${current_screen[1]}*1/4))" ]; then # IN-TOP
	var_key="top"
elif [ "$current_y" -gt "$((${current_screen[1]}*3/4))" ]; then # IN-BOTTOM
	var_key="bottom"
fi
if [ "$current_x" -lt "$((${current_screen[0]}*1/4))" ]; then # IN-LEFT
	var_key="${var_key}left"
elif [ "$current_x" -gt "$((${current_screen[0]}*3/4))" ]; then # IN-RIGHT
	var_key="${var_key}right"
fi
[ ! "$var_key" ] && var_key="center"

#echo "$var_key"

case ${var_key} in
top)         current_x=$(($current_x-250))
             ;;
topleft)     : #skip
             ;;
topright)    current_x=$(($current_x-295))
             ;;
bottom)      current_x=$(($current_y-210))
             ;;
bottomleft)  current_y=$(($current_y-210))
             ;;
bottomright) current_x=$(($current_x-295))
             current_y=$(($current_y-210))
             ;;
left)        :
             ;;
right)       current_x=$(($current_x-310))
             ;;
center)      :
             ;;
esac

PLUG=$(($RANDOM * $$))
yad --plug=$PLUG --tabnum=1 --scale \
    --print-partial \
    --text="  Volume Control                   " \
    --min-value=0 --max-value=100 \
    --image="preferences-desktop-sound" \
    --borders="12" \
    --value="$CURVOL" 2> /dev/null | \
while read VOL; do
    set_notification_icon $(printf "%3d" "$VOL") 2>&1 >$YAD_AUDIO
    amixer sset 'Master' "$VOL%" 2>&1 >/dev/null
done &

yad --plug=$PLUG --tabnum=2 --text="" --form --field="Mute/Unmute":fbtn "bash -c 'alsa_toggle'" &

yad --paned --key=$PLUG --tab="Tab 1" --tab="Tab 2" --width=300 --height=200 \
    --posy=$current_y --posx=$current_x \
    --no-buttons  \
    --undecorated \
    --close-on-unfocus \
    --on-top \
    --skip-taskbar \
    --sticky \
    --class="$YAD_CLASS"
}
export -f  YAD_AUDIO_audio

function set_notification_icon
{
    LANG=C.UTF-8
  if amixer | grep -E -A 6 -B 0 'Master|Headphone|Speaker' | grep '\[off\]'; then
    amixer  set Master unmute
    amixer  set Speaker unmute
    amixer  set Headphone unmute
    get_volume
    set_notification_icon $(printf "%3d" "$CURVOL") 2>&1 >$YAD_AUDIO
  fi

  if [[ "$1" -ge "68" ]]; then
    echo "icon:notification-audio-volume-high"

  elif [[ "$1" -ge "34" && "$1" -lt "68" ]]; then
    echo "icon:notification-audio-volume-medium" 

  elif [[ "$1" -ge "1" && "$1" -lt "34" ]]; then
    echo "icon:notification-audio-volume-low" 

  elif [[ "$1" -lt "1" ]]; then
    echo "icon:notification-audio-volume-off" 
  fi

  echo "tooltip:Volume $1 %" 
  echo "menu:About!sh -c 'notify-send -i notification-audio-volume-high -t 8000 \"Volume Control\" \"by Misko_2083\"'!gtk-about||Quit!quit!gtk-quit"
}
export -f set_notification_icon

function alsa_toggle(){
  if amixer | grep -E -A 6 -B 0 'Master|Headphone|Speaker' | grep '\[off\]'; then
    amixer  set Master unmute
    amixer  set Speaker unmute
    amixer  set Headphone unmute
    get_volume
    set_notification_icon $(printf "%3d" "$CURVOL") 2>&1 >$YAD_AUDIO
  else
    echo "icon:notification-audio-volume-muted" 2>&1 >$YAD_AUDIO
    amixer set Master mute
  fi
}
export -f alsa_toggle

exec 3<> $YAD_AUDIO

yad --notification --command="bash -c 'YAD_AUDIO_audio'" \
 --listen <&3 & notifpid=$!

# Don't set the icon untill the yad notification is ready
# until there is a window name do -> sleep
until xdotool getwindowname $(xdotool search --pid "$notifpid" 2>/dev/null | tail -1) &>/dev/null; do
        # sleep until the window opens
        sleep 1       
done

# Set intitial volume icon
get_volume
set_notification_icon $(printf "%3d" "$CURVOL") >&3

# Waits for notification to exit
wait $notifpid

exec 3>&-

exit 0

ToZ · 2018-04-11 12:19:06

That's not a bad implementation at all. Amazing what can be done with scripting languages (and the right tools).
Thanks for sharing the script.

Misko_2083 · 2018-04-12 13:23:41

I agree, it's amazing what can be done with only a few lines of script and the right tools.
Fredx181 from the puppy forums made this small, but very good, radio player https://github.com/fredx181/yradio with yad --paned dialog.

Thanks for all of your help on the forum.

ToZ · 2018-04-12 15:57:12

Misko_2083 wrote:

Fredx181 from the puppy forums made this small, but very good, radio player https://github.com/fredx181/yradio with yad --paned dialog.

Wow. Very nice.

Xfce Forum

Sub domains

#1 2018-04-10 15:09:03

undersanding xfce panel position

#2 2018-04-10 18:47:29

Re: undersanding xfce panel position

#3 2018-04-11 11:40:33

Re: undersanding xfce panel position

#4 2018-04-11 12:19:06

Re: undersanding xfce panel position

#5 2018-04-12 13:23:41

Re: undersanding xfce panel position

#6 2018-04-12 15:57:12

Re: undersanding xfce panel position

Board footer