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#!/bin/sh
# This script cannot run without the X server (GUI)
# So exit if DISPLAY is not set
[ -z "$DISPLAY" ] && {
notify-send remap "ERROR: DISPLAY not set"
exit
}
timeout="${KEY_RELEASE_TIMEOUT:-500}"
help() { echo "remap - remap modifier keys for easy access
USAGE:
remap [OPTION]...
OPTIONS:
-x reset keys
-t toggle (remap/reset)
-s show remap status
-i show info of all key remaps
-h show this help message"; }
key_info() { echo "
+-----------------+-----------------------------------+
| Before | After |
+-----------------+-----------------+-----------------+
| Key | On Hold | On Tap |
+-----------------+-----------------+-----------------+
| Tab | Super | Tab |
| Caps Lock | Ctrl | Esc |
| Space | Shift | Space |
| Left Ctrl | Ctrl | Caps Lock |
| Escape | Tab | Tab |
+-----------------+-----------------+-----------------+
Note:
By default, 'On Tap' will timeout at 500 miliseconds. In other words,
if you release a key after timeout, the key will not be generated.
You can increase it's value by setting the \$KEY_RELEASE_TIMEOUT environment
variable. This is useful in case you don't have a fast typing speed.
If you want to change more keys or want a different configuration, you
can edit the remap_keys() function inside this script.
"; }
while getopts 'rxtsih' o; do case "$o" in
x) action=x ;;
t) action=t ;;
s) action=s ;;
i) key_info >&2; exit ;;
h) help >&2; exit ;;
*) printf "remap: invalid argument -- '%s'\n" "$OPTARG" ;;
esac; done
status_file="/tmp/.remap.lock"
keymap_file="/tmp/.xmodmap.defaults"
[ -f "$keymap_file" ] || xmodmap -pke > "$keymap_file"
msg() {
[ "$VERBOSE_REMAP" != 1 ] && return
printf "remap: %s\n" "$@"
# notify-send "remap" "$*"
}
remap_keys() {
msg "remapping keys..."
# Fast key repeats
xset r rate 300 50
# New key behaviour on Hold
# lines after ! are comments
xmodmap - <<-EOF
! Hold Caps_Lock -> Control_R
remove lock = Caps_Lock
remove Control = Control_R
! keysym Control_R = Caps_Lock
keysym Caps_Lock = Control_R
! add lock = Caps_Lock
add Control = Control_R
keycode any = Caps_Lock
! Hold space -> Shift_R
remove shift = Shift_R
keycode 65 = Shift_R
add shift = Shift_R
keycode any = space
! Hold Tab -> Super_L
! ! Escape -> Tab
remove mod4 = Super_L
keycode 23 = Super_L
keycode any = Tab ISO_Left_Tab Tab ISO_Left_Tab
! keycode 133 = Tab ISO_Left_Tab Tab ISO_Left_Tab
add mod4 = Super_L
! keycode 230 = Escape
! keycode 9 = Tab ISO_Left_Tab Tab ISO_Left_Tab
EOF
# New key behaviour on Tap
killall xcape 2>/dev/null
xcape -t "$timeout" -e "Super_L=Tab"
xcape -t "$timeout" -e "Control_R=Escape"
xcape -t "$timeout" -e "Shift_L=Caps_Lock"
xcape -t "$timeout" -e "Shift_R=space"
date > "$status_file"
xset led 3
msg "keys remapped"
}
reset_keys() {
msg "resetting keys..."
xset r rate
killall xcape 2>/dev/null
setxkbmap -layout us
xmodmap "$keymap_file"
[ -f "$status_file" ] && rm "$status_file"
xset -led 3
msg "keys reset"
}
toggle_remap() {
if [ -f "$status_file" ]; then
reset_keys
else
remap_keys
fi
}
remap_status() {
if [ -f "$status_file" ]; then
printf "Keys are remapped since "
cat "$status_file"
else
echo "Keys are NOT remapped"
fi
}
case "$action" in
s) remap_status ;;
x) reset_keys ;;
t) toggle_remap ;;
*) remap_keys ;;
esac
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