66 lines
2.3 KiB
Python
66 lines
2.3 KiB
Python
# pylint: disable=C0111,R0903
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"""Displays the brightness of a display
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Parameters:
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* brightness.step: The amount of increase/decrease on scroll in % (defaults to 2)
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* brightness.device_path: The device path (defaults to /sys/class/backlight/intel_backlight), can contain wildcards (in this case, the first matching path will be used)
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"""
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import glob
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import shutil
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import core.module
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import core.widget
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import core.input
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import core.decorators
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class Module(core.module.Module):
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@core.decorators.every(seconds=30) # takes 30s to pick up on "external" changes
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def __init__(self, config):
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super().__init__(config, core.widget.Widget(self.brightness))
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self._brightness = 0
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self._device_path = self.find_device(
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self.parameter('device_path', '/sys/class/backlight/intel_backlight')
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)
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step = self.parameter('step', 2)
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if shutil.which('light'):
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self.register_cmd('light -A {}%'.format(step),
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'light -U {}%'.format(step))
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elif shutil.which('brightnessctl'):
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self.register_cmd('brightnessctl s {}%+'.format(step),
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'brightnessctl s {}%-'.format(step))
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else:
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self.register_cmd('xbacklight +{}%'.format(step),
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'xbacklight -{}%'.format(step))
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def find_device(self, device_path):
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res = glob.glob(device_path)
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if len(res) == 0:
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return device_path
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return res[0]
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def register_cmd(self, up_cmd, down_cmd):
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core.input.register(self, button=core.input.WHEEL_UP, cmd=up_cmd)
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core.input.register(self, button=core.input.WHEEL_DOWN, cmd=down_cmd)
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def brightness(self, widget):
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if isinstance(self._brightness, float):
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return '{:3.0f}%'.format(self._brightness).strip()
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else:
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return 'n/a'
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def update(self):
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try:
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with open('{}/brightness'.format(self._device_path)) as f:
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backlight = int(f.readline())
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with open('{}/max_brightness'.format(self._device_path)) as f:
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max_brightness = int(f.readline())
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self._brightness = float(backlight * 100 / max_brightness)
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except:
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return 'Error'
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# vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4
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