56 lines
2.1 KiB
Python
56 lines
2.1 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)
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"""
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import bumblebee.util
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import bumblebee.input
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import bumblebee.output
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import bumblebee.engine
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class Module(bumblebee.engine.Module):
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def __init__(self, engine, config):
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super(Module, self).__init__(engine, config,
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bumblebee.output.Widget(full_text=self.brightness))
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self._brightness = 0
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self._device_path = self.parameter("device_path", "/sys/class/backlight/intel_backlight")
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step = self.parameter("step", 2)
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if bumblebee.util.which("light"):
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self.register_cmd(engine, "light -A {}%".format(step),
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"light -U {}%".format(step))
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elif bumblebee.util.which("brightnessctl"):
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self.register_cmd(engine, "brightnessctl s {}%+".format(step),
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"brightnessctl s {}%-".format(step))
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else:
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self.register_cmd(engine, "xbacklight +{}%".format(step),
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"xbacklight -{}%".format(step))
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def register_cmd(self, engine, upCmd, downCmd):
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engine.input.register_callback(self, button=bumblebee.input.WHEEL_UP, cmd=upCmd)
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engine.input.register_callback(self, button=bumblebee.input.WHEEL_DOWN, cmd=downCmd)
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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, widgets):
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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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