/brightness-adjust/brightadjust.py

http://github.com/joelagnel/stumpwm-goodies · Python · 51 lines · 22 code · 8 blank · 21 comment · 1 complexity · 3cea1b55f14bbb5564a14dc7e22f91c5 MD5 · raw file 

    

  1. #!/usr/bin/python
    2. 

  2. # -*- coding: UTF-8 -*-
    3. 

  3. ###########################################################################
    4. 

  4. #    Copyright (C) 2006 by Sebastian Kügler                                      
    5. 

  5. #    <sebas@kde.org>                                                             
    6. 

  6. #
    7. 

  7. # Copyright: See COPYING file that comes with this distribution
    8. 

  8. #
    9. 

  9. ###########################################################################
    10. 

  10. # An API for changing the powerstate of a notebook
    11. 

  11. ###########################################################################
    12. 

  12. #
    13. 

  13. # Joel Agnel Fernandes (agnel.joel@gmail.com)
    14. 

  14. # Isaac Praveen (icylisper@gmail.com)
    15. 

  15. # Stolen from KDE's guidance power system, adapted (severely) for StumpWM
    16. 

  16. # to change Brightness of Laptop Panel.
    17. 

  17. #
    18. 

  18. ###########################################################################
    19. 

  19. 

  20. import dbus
    21. 

  21. import os, xf86misc
    22. 

  22. 

  23. class BrightAdjust:
    24. 

  24.     def __init__(self):
    25. 

  25.         self._initHAL()
    26. 

  26.         self._initBrightness()
    27. 

  27. 

  28.     def _initHAL(self):
    29. 

  29.         self.bus = dbus.SystemBus()
    30. 

  30.         hal_manager_obj = self.bus.get_object("org.freedesktop.Hal", "/org/freedesktop/Hal/Manager")
    31. 

  31.         self.hal_manager = dbus.Interface(hal_manager_obj, "org.freedesktop.Hal.Manager")
    32. 

  32. 

  33.     def _initBrightness(self):
    34. 

  34.         """ Search HAL for a screen with brightness controls."""
    35. 

  35.         brightnessDevice = self.hal_manager.FindDeviceByCapability("laptop_panel")
    36. 

  36.         if len(brightnessDevice) >= 1:
    37. 

  37.             self.brightnessObject = self.bus.get_object("org.freedesktop.Hal", brightnessDevice[0])
    38. 

  38.             self.brightness_properties = self.brightnessObject.GetAllProperties(
    39. 

  39.                                                 dbus_interface="org.freedesktop.Hal.Device")
    40. 

  40. 

  41.     def getBrightness(self):
    42. 

  42.         """ Read brightness from HAL. """
    43. 

  43.         b = self.brightnessObject.GetBrightness(dbus_interface="org.freedesktop.Hal.Device.LaptopPanel")
    44. 

  44.         return b
    45. 

  45. 

  46.     def adjustBrightness(self, level):
    47. 

  47.         """ Adjust the brightness via HAL. """
    48. 

  48.         self.brightnessObject.SetBrightness(level,
    49. 

  49.                                             dbus_interface="org.freedesktop.Hal.Device.LaptopPanel")
    50.