88 lines
2.6 KiB
Shell
Executable file
88 lines
2.6 KiB
Shell
Executable file
#!/bin/sh
|
|
|
|
# Triggered by <Alt><Shift>Left
|
|
# as defined in [org/gnome/settings-daemon/plugins/media-keys]
|
|
# in ~/.config/gnome-settings/key-bindings.ini
|
|
#
|
|
# This script makes the screen a bit cooler than it currently is,
|
|
# unless it is currently in a ramping phase and not fully tinted
|
|
#
|
|
# The default warmth is restored at login by ~/.local/bin/restore-gnome
|
|
|
|
set -eu
|
|
|
|
|
|
# GNOME's GUI lets one choose between 1700 and 4700 only,
|
|
# and 6500 is the point where no color correction is applied at all
|
|
# while 1000 is the absolute minimum supported by the OS
|
|
_MIN_TEMPERATURE=1200
|
|
_MAX_TEMPERATURE=4700
|
|
|
|
|
|
notify() {
|
|
ID_FILE="${XDG_RUNTIME_DIR}/night-light-notification-id"
|
|
_id=$(cat "$ID_FILE" 2>/dev/null || true)
|
|
|
|
if [ -n "$_id" ]; then
|
|
notify-send -p -t 5000 --replace-id="$_id" "Night Light" "$1" > "$ID_FILE" || rm -f "$ID_FILE"
|
|
else
|
|
notify-send -p -t 5000 "Night Light" "$1" > "$ID_FILE" || rm -f "$ID_FILE"
|
|
fi
|
|
}
|
|
|
|
|
|
Schema=org.gnome.settings-daemon.plugins.color
|
|
|
|
|
|
active=$(gdbus call --session \
|
|
--dest org.gnome.SettingsDaemon.Color \
|
|
--object-path /org/gnome/SettingsDaemon/Color \
|
|
--method org.freedesktop.DBus.Properties.Get \
|
|
org.gnome.SettingsDaemon.Color NightLightActive)
|
|
|
|
applied=$(gdbus call --session \
|
|
--dest org.gnome.SettingsDaemon.Color \
|
|
--object-path /org/gnome/SettingsDaemon/Color \
|
|
--method org.freedesktop.DBus.Properties.Get \
|
|
org.gnome.SettingsDaemon.Color Temperature \
|
|
| sed -E 's/.*uint32 ([0-9]+).*/\1/')
|
|
|
|
automatic=$(gsettings get $Schema night-light-schedule-automatic)
|
|
current=$(gsettings get $Schema night-light-temperature | awk '{print $2}')
|
|
|
|
|
|
# Cooling never turns "Night Light" on
|
|
if [ "$active" = "(<false>,)" ]; then
|
|
notify "is not tinting the screen right now (target: ${current}K)"
|
|
exit 0
|
|
fi
|
|
|
|
|
|
# While the screen is not (fully) tinted,
|
|
# stepping the target has no visible effect
|
|
# => Only show what is going on
|
|
if [ "$automatic" = "true" ] && [ $((applied - current)) -gt 300 ]; then
|
|
notify "is still following the schedule's ramp (target: ${current}K)"
|
|
exit 0
|
|
fi
|
|
|
|
|
|
# Walking past the cool end switches the feature off
|
|
if [ "$current" -ge $_MAX_TEMPERATURE ]; then
|
|
gsettings set $Schema night-light-enabled false
|
|
notify "is now off (stepped past ${_MAX_TEMPERATURE}K)"
|
|
exit 0
|
|
fi
|
|
|
|
|
|
# 500 = (4700 - 1700 + 500) / 7
|
|
# => Seven steps spanning more than the range in the GUI,
|
|
# mainly because we want to allow a bit more warmth (i.e., +500)
|
|
new=$((current + 500))
|
|
|
|
if [ "$new" -gt $_MAX_TEMPERATURE ]; then
|
|
new=$_MAX_TEMPERATURE
|
|
fi
|
|
|
|
|
|
gsettings set $Schema night-light-temperature "uint32 $new"
|