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@Quackmatic /mapwacom
Last active Apr 17, 2018

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Mapwacom script
#!/bin/bash
# mapwacom script
MAPWACOM=$(basename $0)
EXIT_CODE_BAD_DEVICE=82
EXIT_CODE_NO_SUCH_DEVICE=80
EXIT_CODE_NO_SUCH_SCREEN=81
EXIT_CODE_MISSING_DEPS=83
EXIT_CODE_USAGE=64
ENTIRE_SCREEN_NAME="desktop"
# Checks the command $1 exists.
check_tool_exists() {
command -v $1 >/dev/null 2>&1 || {
echo "$MAPWACOM requires $1 to run." 1>&2
echo "Ensure you have it installed first." 1>&2
exit $EXIT_CODE_MISSING_DEPS
}
}
# Displays usage information.
usage_info() {
echo "Usage: $MAPWACOM [OPTIONS] | [[-d DEVICENAME]... -s SCREENNAME]..."
echo ""
echo "OPTIONS"
echo " -h, --help"
echo " Shows this message."
echo " --list-devices"
echo " Lists all present Wacom device names."
echo " --list-screens"
echo " Lists all screens that devices may be mapped to."
echo " The special screen 'desktop' represents the entire X display."
echo " --debug"
echo " Prints debug information."
echo " -d DEVICENAME, --device=DEVICENAME"
echo " Specifies a device name which should be mapped to a screen."
echo " --device-regex=DEVICEPATTERN"
echo " Specifies a grep-style regex pattern, which will specify all"
echo " devices whose names matches the given pattern."
echo " This is equivalent to specifying the --device option on every"
echo " device matching the given expression."
echo " -s SCREENNAME, --screen=SCREENNAME"
echo " Maps all previously specified devices to the given screen name."
echo " This ensures that the device-to-screen mapping remains of the"
echo " same proportion as the device area itself by, if necessary,"
echo " letter-boxing the device area to fit the screen area inside it."
echo ""
echo "EXAMPLES"
echo " $MAPWACOM --list-devices"
echo " Lists all Wacom devices on this computer."
echo " $MAPWACOM -d \"Wacom Bamboo stylus\" -d \"Wacom Bamboo eraser\" -s \"DVI-I-2\""
echo " Maps the \"Wacom Bamboo stylus\" and \"Wacom Bamboo eraser\""
echo " devices to the screen named \"DVI-I-2\"."
echo " $MAPWACOM --device-regex=\"Wacom Bamboo [se].*\" --screen=\"DVI-I-2\""
echo " Equivalent in functionality to the example above, but usigng the"
echo " regex device specifier instead. There may be some creating use"
echo " case of this option that might be useful."
echo " $MAPWACOM -d \"device 1\" -d \"device 2\" -s \"screen 1\" -d \"device 3\" -s \"screen 2\""
echo " Maps devices 1 and 2 to screen 1, and device 3 to screen 2."
echo " This demonstrates the behaviour of the device and screen options."
}
# Loads the arrays (ALL_DEVICES, ALL_SCREENS) containing the names of all valid
# Wacom devices and screen names,
load_all_devices_and_screens() {
readarray -t ALL_DEVICES < <(xsetwacom --list devices | sed 's/[ \t]*id:.*$//')
readarray -t ALL_SCREENS < <(xrandr -q --current | sed -n 's/^\([^ ]\+\) connected.*/\1/p')
ALL_SCREENS+=("$ENTIRE_SCREEN_NAME")
}
# Lists ALL_DEVICES to stdout.
list_all_devices() {
for DEVICE in "${ALL_DEVICES[@]}"; do
echo "$DEVICE"
done
}
# Lists ALL_SCREENS to stdout.
list_all_screens() {
for SCREEN in "${ALL_SCREENS[@]}"; do
echo "$SCREEN"
done
}
# Succeeds if $1 is a valid device name; fails otherwise.
valid_device() {
for DEVICE in "${ALL_DEVICES[@]}"; do
if [ "$DEVICE" == "$1" ]; then
return 0
fi
done
return 1
}
# Succeeds if $1 is a valid device name; fails otherwise.
valid_screen() {
for SCREEN in "${ALL_SCREENS[@]}"; do
if [ "$SCREEN" == "$1" ]; then
return 0
fi
done
return 1
}
# Adds device $1 to the device list.
add_device() {
[ $SHOW_DEBUG -ne 0 ] && echo "Adding device '$1'."
if valid_device "$1"; then
DEVICES+=("$1")
else
echo "Device '$1' does not exist." 1>&2
echo "Run '$MAPWACOM --list-devices' to see available devices." 1>&2
exit $EXIT_CODE_NO_SUCH_DEVICE
fi
}
# Adds all devices matching the regex pattern $1 to the device list.
add_device_regex() {
COUNT=0
for DEVICE in "${ALL_DEVICES[@]}"; do
if echo "$DEVICE" | grep "$1" 1>/dev/null; then
add_device "$DEVICE"
COUNT=$(( $COUNT + 1 ))
fi
done
[ $SHOW_DEBUG -ne 0 ] && echo "Added $COUNT devices matching '$1'."
}
# Clears the device list.
clear_devices() {
DEVICES=()
}
# Maps device $1 to screen $2.
map_device_to_screen() {
[ $SHOW_DEBUG -ne 0 ] && echo "Mapping '$1' to '$2'."
if xsetwacom --set "$1" ResetArea 2>&1 | grep "does not exist" 1>/dev/null 2>/dev/null; then
echo "Device '$1' is not an input device or is otherwise not supported."
echo "Its area cannot be reset via: xsetwacom --set \"$1\" ResetArea"
if [ $EXIT_ON_BAD_DEVICE -ne 0 ]; then
exit $EXIT_CODE_BAD_DEVICE
else
return $EXIT_CODE_BAD_DEVICE
fi
fi
AREA_INFO=$(xsetwacom --get "$1" Area 2>&1)
if echo "${AREA_INFO}" | grep "does not exist" 1>/dev/null 2>/dev/null; then
echo "Device '$1' is not an input device or is otherwise not supported."
echo "Its area cannot be obtained via: xsetwacom --get \"$1\" Area"
if [ $EXIT_ON_BAD_DEVICE -ne 0 ]; then
exit $EXIT_CODE_BAD_DEVICE
else
return $EXIT_CODE_BAD_DEVICE
fi
fi
read AREASX AREASY AREAX AREAY <<< `xsetwacom --get "$1" Area`
[ $SHOW_DEBUG -ne 0 ] && echo "Device '$1' area ${AREAX}x${AREAY}."
if [ "$2" = "$ENTIRE_SCREEN_NAME" ]; then
LINE=`xrandr -q --current | sed -n 's/^Screen 0:.*, current \([0-9]\+\) x \([0-9]\+\),.*/\1 \2/p'`
read WIDTH HEIGHT <<< "$LINE"
else
LINE=`xrandr -q --current | sed -n "s/^$2"' connected.* \([0-9]\+x[0-9]\++[0-9]\++[0-9]\+\).*/\1/p'`
read WIDTH HEIGHT <<< `echo "${LINE}" | sed -n 's/\([0-9]\+\)x\([0-9]\+\)+\([0-9]\+\)+\([0-9]\+\)/\1 \2/p'`
fi
[ $SHOW_DEBUG -ne 0 ] && echo "Screen '$2' size ${WIDTH}x${HEIGHT}."
RATIOAREAY=$(( AREAX * HEIGHT / WIDTH ))
RATIOAREAX=$(( AREAY * WIDTH / HEIGHT ))
if [ "$AREAY" -gt "$RATIOAREAY" ]; then
NEWAREAX="$AREAX"
NEWAREAY="$RATIOAREAY"
else
NEWAREAX="$RATIOAREAX"
NEWAREAY="$AREAY"
fi
xsetwacom --set "$1" Area 0 0 "$NEWAREAX" "$NEWAREAY"
if [ "$2" = "$ENTIRE_SCREEN_NAME" ]; then
xsetwacom --set "$1" MapToOutput "$ENTIRE_SCREEN_NAME"
else
xsetwacom --set "$1" MapToOutput "$LINE"
fi
}
# Maps all devices in the device list to screen $1.
map_devices_to_screen() {
if valid_screen "$1"; then
for DEVICE in "${DEVICES[@]}"; do
map_device_to_screen "$DEVICE" "$1"
done
else
echo "Screen '$1' does not exist." 1>&2
echo "Run '$MAPWACOM --list-screens' to see available screens." 1>&2
exit $EXIT_CODE_NO_SUCH_SCREEN
fi
}
check_tool_exists xrandr
check_tool_exists xsetwacom
load_all_devices_and_screens
if [ $# -eq 0 ]; then
usage_info
exit
fi
clear_devices
SHOW_DEBUG=0
EXIT_ON_BAD_DEVICE=0 # If we try to map a device that doesn't support it, exit script
while [ $# -gt 0 ]; do
OPT="$1"
shift
case $OPT in
"-h"|"-?"|"--help")
usage_info
exit
;;
"--debug")
echo "$OPT option set; debug information will be displayed."
SHOW_DEBUG=1
;;
"--list-devices")
list_all_devices
;;
"--list-screens")
list_all_screens
;;
"-d"|"--device")
add_device "$1"
shift
;;
"--device="*)
add_device "${OPT#*=}"
;;
"--device-regex")
add_device_regex "$1"
shift
;;
"--device-regex="*)
add_device_regex "${OPT#*=}"
;;
"-s"|"--screen")
map_devices_to_screen "$1"
shift
clear_devices
;;
"--screen="*)
map_devices_to_screen "${OPT#*=}"
clear_devices
;;
*)
echo "Unknown option $OPT." 1>&2
exit $EXIT_CODE_USAGE
;;
esac
done
@raingloom

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raingloom Dec 27, 2017

<3 just what i needed <3

<3 just what i needed <3

@amiaship

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@amiaship

amiaship Apr 14, 2018

Really hoping I can get this working, as it would fix a huge headache of mine! I'm having an issue getting it to work. Might be because I'm new to bash and not familiar with usage but
$MAPWACOM --help returns bash: --help: command not found
$MAPWACOM alone gives no output and returns to the prompt
This is happening with everything in the [OPTIONS] set. I have 'mapwacom.sh' installed in /usr/local/bin which is part of my $PATH and it is marked as executable. Please advise - this would fix my only issue with my twin monitor setup, so I'd love to have it working!
screenshot_2018-04-13_23-26-24

Really hoping I can get this working, as it would fix a huge headache of mine! I'm having an issue getting it to work. Might be because I'm new to bash and not familiar with usage but
$MAPWACOM --help returns bash: --help: command not found
$MAPWACOM alone gives no output and returns to the prompt
This is happening with everything in the [OPTIONS] set. I have 'mapwacom.sh' installed in /usr/local/bin which is part of my $PATH and it is marked as executable. Please advise - this would fix my only issue with my twin monitor setup, so I'd love to have it working!
screenshot_2018-04-13_23-26-24

@wyldckat

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wyldckat Apr 17, 2018

@amiaship: Have you tried running the script like this?

mapwacom.sh --help

@amiaship: Have you tried running the script like this?

mapwacom.sh --help
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