nightcolor.py

import dbus
from enum import Enum
import argparse

parser = argparse.ArgumentParser(description='Process some integers.')
parser.add_argument('temp',
	type=int,
	help='NightTemperature (eg: 4200)',
)
parser.add_argument('-d', '--delta',
	help='Increment by temp instead.',
	action='store_true',
	default=False,
)

args = parser.parse_args()


# https://github.com/KDE/kwin/blob/master/colorcorrection/manager.h#L49
class NightColorMode(Enum):
	Automatic = 0
	Location = 1
	Timings = 2
	Constant = 3


bus = dbus.SessionBus()
obj = bus.get_object('org.kde.KWin', '/ColorCorrect')
iface = dbus.Interface(obj, dbus_interface='org.kde.kwin.ColorCorrect')
oldProps = iface.nightColorInfo()

if args.delta:
	nextTemp = oldProps['NightTemperature'] + args.temp
else:
	nextTemp = args.temp

iface.setNightColorConfig({
	'Mode': NightColorMode.Constant.value,
	'NightTemperature': nextTemp,
})

newProps = iface.nightColorInfo()

def printPropDiff(key):
	print("{}: {} => {}".format(key, oldProps[key], newProps[key]))

print("{}: {} => {}".format('Mode', NightColorMode(oldProps['Mode']), NightColorMode(newProps['Mode'])))
printPropDiff('NightTemperature')