85 lines
2.3 KiB
Shell
Executable file
85 lines
2.3 KiB
Shell
Executable file
#!/bin/sh
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# Triggered by <Alt><Shift>Right
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# as defined in [org/gnome/settings-daemon/plugins/media-keys]
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# in ~/.config/gnome-settings/key-bindings.ini
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#
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# This script ensures "Night Light" is forced on
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# if it was not yet on by schedule
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# and makes the screen a bit warmer than it currently is
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#
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# The default warmth is restored at login by ~/.local/bin/restore-gnome
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set -eu
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# GNOME's GUI lets one choose between 1700 and 4700 only,
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# and 6500 is the point where no color correction is applied at all
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# while 1000 is the absolute minimum supported by the OS
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_MIN_TEMPERATURE=1200
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_MAX_TEMPERATURE=4700
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notify() {
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ID_FILE="${XDG_RUNTIME_DIR}/night-light-notification-id"
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_id=$(cat "$ID_FILE" 2>/dev/null || true)
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if [ -n "$_id" ]; then
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notify-send -p -t 5000 --replace-id="$_id" "Night Light" "$1" > "$ID_FILE" || rm -f "$ID_FILE"
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else
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notify-send -p -t 5000 "Night Light" "$1" > "$ID_FILE" || rm -f "$ID_FILE"
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fi
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}
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Schema=org.gnome.settings-daemon.plugins.color
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active=$(gdbus call --session \
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--dest org.gnome.SettingsDaemon.Color \
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--object-path /org/gnome/SettingsDaemon/Color \
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--method org.freedesktop.DBus.Properties.Get \
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org.gnome.SettingsDaemon.Color NightLightActive)
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current=$(gsettings get $Schema night-light-temperature | awk '{print $2}')
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# 500 = (4700 - 1700 + 500) / 7
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# => Seven steps spanning more than the range in the GUI,
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# mainly because we want to allow a bit more warmth (i.e., +500)
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new=$((current - 500))
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if [ "$new" -lt $_MIN_TEMPERATURE ]; then
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new=$_MIN_TEMPERATURE
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fi
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gsettings set $Schema night-light-temperature "uint32 $new"
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# Force "Night Light" on, saving a <Control><Alt>n call,
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# with the same settings as in ~/.local/bin/night-light-toggle-schedule
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if [ "$active" = "(<false>,)" ]; then
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gsettings set $Schema night-light-enabled true
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gsettings set $Schema night-light-schedule-automatic false
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gsettings set $Schema night-light-schedule-from 0.0
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gsettings set $Schema night-light-schedule-to 24.0
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fi
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if [ "$current" -le $_MIN_TEMPERATURE ]; then
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if [ "$active" = "(<false>,)" ]; then
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notify "is now forced on and already as warm as it gets (${_MIN_TEMPERATURE}K)"
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else
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notify "is already as warm as it gets (${_MIN_TEMPERATURE}K)"
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fi
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else
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if [ "$active" = "(<false>,)" ]; then
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notify "is now forced on at ${new}K"
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fi
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fi
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