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42 lines
1.1 KiB
42 lines
1.1 KiB
from logitech.g19_keys import (Data, Key)
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from logitech.g19_receivers import InputProcessor
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class SimpleDisplayBrightness(object):
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'''Simple adjustment of display brightness.
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Uses scroll to adjust display brightness.
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'''
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def __init__(self, lg19):
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self.__lg19 = lg19
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self.__curBrightness = 100
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@staticmethod
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def _clamp_brightness(val):
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'''Clamps given value to [0, 100].'''
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val = val if val >= 0 else 0
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val = val if val <= 100 else 100
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return val
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def get_input_processor(self):
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return self
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def process_input(self, evt):
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usedInput = False
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diffVal = 0
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if Key.SCROLL_UP in evt.keysDown:
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diffVal = 5
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usedInput = True
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if Key.SCROLL_DOWN in evt.keysDown:
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diffVal = -5
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usedInput = True
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oldVal = self.__curBrightness
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newVal = self._clamp_brightness(oldVal + diffVal)
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if oldVal != newVal:
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self.__lg19.set_display_brightness(newVal)
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self.__curBrightness = newVal
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return usedInput
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