dotfiles/.local/bin/vnc
2020-07-04 14:23:27 +02:00

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#!/bin/bash
# ----------------------------------------------------------------------------
# "THE BEER-WARE LICENSE" (Revision 42):
# <k.bumsik@gmail.com> wrote this file. As long as you retain this notice you
# can do whatever you want with this stuff. If we meet some day, and you think
# this stuff is worth it, you can buy me a beer in return. - Bumsik Kim
# ----------------------------------------------------------------------------
# Configuration
WIDTH=1920 # 1368 for iPad Pro
HEIGHT=1080 # 1024 for iPad Pro
MODE_NAME="mode_ipad" # Set whatever name you like, you may need to change
# this when you change resolution, or just reboot.
DIS_NAME="VIRTUAL1" # Don't change it unless you know what it is
RANDR_POS="--right-of" # Default position setting for xrandr command
# Parse arguments
while [ "$#" -gt 0 ]; do
case $1 in
-l|--left) RANDR_POS="--left-of" ;;
-r|--right) RANDR_POS="--right-of" ;;
-a|--above) RANDR_POS="--above" ;;
-b|--below) RANDR_POS="--below" ;;
-p|--portrait) TMP=$WIDTH; WIDTH=$HEIGHT; HEIGHT=$TMP
MODE_NAME="$MODE_NAME""_port" ;;
-h|--hidpi) WIDTH=$(($WIDTH * 2)); HEIGHT=$(($HEIGHT * 2))
MODE_NAME="$MODE_NAME""_hidpi" ;;
*) echo "'$1' cannot be a monitor position"; exit 1 ;;
esac
shift
done
# Detect primary display
PRIMARY_DISPLAY=$(xrandr | perl -ne 'print "$1" if /(\w*)\s*connected\s*primary/')
# Add display mode
RANDR_MODE=$(cvt "$WIDTH" "$HEIGHT" 60 | sed '2s/^.*Modeline\s*\".*\"//;2q;d')
xrandr --addmode $DIS_NAME $MODE_NAME 2>/dev/null
# If the mode doesn't exist then make mode and retry
if ! [ $? -eq 0 ]; then
xrandr --newmode $MODE_NAME $RANDR_MODE
xrandr --addmode $DIS_NAME $MODE_NAME
fi
# Show display first
xrandr --output $DIS_NAME --mode $MODE_NAME
# Then move display
sleep 5 # A short delay is needed. Otherwise sometimes the below command is ignored.
xrandr --output $DIS_NAME $RANDR_POS $PRIMARY_DISPLAY
# Cleanup before exit
function finish {
xrandr --output $DIS_NAME --off
xrandr --delmode $DIS_NAME $MODE_NAME
echo "Second monitor disabled."
}
trap finish EXIT
# Get the display's position
CLIP_POS=$(xrandr | perl -ne 'print "$1" if /'$DIS_NAME'\s*connected\s*(\d*x\d*\+\d*\+\d*)/')
echo $CLIP_POS
# Share screen
x11vnc -multiptr -repeat -clip $CLIP_POS
# Possible alternative is x0vncserver but it does not show the mouse cursor.
# x0vncserver -display :0 -geometry $DIS_NAME -overlaymode -passwordfile ~/.vnc/passwd
if ! [ $? -eq 0 ]; then
echo x11vnc failed, did you \'apt-get install x11vnc\'?
fi