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- #!/usr/bin/env python3
- # coding: utf-8
- ##
- # Control keyboard backlight
- ##
- from sys import argv
- import dbus
- def kb_light_set(delta):
- bus = dbus.SystemBus()
- kbd_backlight_proxy = bus.get_object('org.freedesktop.UPower', '/org/freedesktop/UPower/KbdBacklight')
- kbd_backlight = dbus.Interface(kbd_backlight_proxy, 'org.freedesktop.UPower.KbdBacklight')
- current = kbd_backlight.GetBrightness()
- maximum = kbd_backlight.GetMaxBrightness()
- new = max(0, current + delta)
- if new >= 0 and new <= maximum:
- current = new
- kbd_backlight.SetBrightness(current)
- # Return current backlight level percentage
- return 100 * current / maximum
- if __name__ == '__main__':
- if len(argv[1:]) == 1:
- if argv[1] == "--up" or argv[1] == "+":
- # ./kb-light.py (+|--up) to increment
- print(kb_light_set(1))
- elif argv[1] == "--down" or argv[1] == "-":
- # ./kb-light.py (-|--down) to decrement
- print(kb_light_set(-1))
- else:
- print("Unknown argument:", argv[1])
- else:
- print("Script takes exactly one argument.", len(argv[1:]), "arguments provided.")
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