103 lines
3.6 KiB
Python
103 lines
3.6 KiB
Python
# pylint: disable=C0111,R0903
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"""Displays the brightness of a display
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The following executables can be used if `use_acpi` is not enabled:
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* brightnessctl
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* light
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* xbacklight
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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); This is only used when brightness.use_acpi is set to true
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* brightness.use_acpi: If set to true, read brightness directly from the sys ACPI interface, using the device specified in brightness.device_path (defaults to false)
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contributed by `TheEdgeOfRage <https://github.com/TheEdgeOfRage>`_ - many thanks!
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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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import util.cli
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class Module(core.module.Module):
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@core.decorators.every(seconds=30)
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def __init__(self, config, theme):
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super().__init__(config, theme, core.widget.Widget(self.brightness))
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self.__brightness = "n/a"
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self.__readcmd = None
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step = self.parameter("step", 2)
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self.__device_path = self.find_device(self.parameter("device_path", "/sys/class/backlight/intel_backlight"))
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if util.format.asbool(self.parameter("use_acpi", False)):
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self.__readcmd = self.__acpi
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# TODO: add setting
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elif shutil.which("light"):
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self.__readcmd = self.__light
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self.register_cmd("light -A {}%".format(step), "light -U {}%".format(step))
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elif shutil.which("brightnessctl"):
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self.__readcmd = self.__brightnessctl
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self.register_cmd(
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"brightnessctl s {}%+".format(step), "brightnessctl s {}%-".format(step)
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)
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else:
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self.__readcmd = self.__xbacklight
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self.register_cmd(
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"xbacklight +{}%".format(step), "xbacklight -{}%".format(step)
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)
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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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return self.__brightness
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def __acpi(self):
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try:
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backlight = 1
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max_brightness = 1
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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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return float(backlight*100)/max_brightness
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except:
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return "unable to read brightness from {}".format(self.__device_path)
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def __light(self):
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return util.cli.execute("light").strip()
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def __brightnessctl(self):
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m = util.cli.execute("brightnessctl m").strip()
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g = util.cli.execute("brightnessctl g").strip()
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return float(g) / float(m) * 100.0
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def __xbacklight(self):
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return util.cli.execute("xbacklight -get").strip()
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def update(self):
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try:
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tmp = self.__readcmd()
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if isinstance(tmp, str):
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self.__brightness = tmp
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else:
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self.__brightness = "{:3.0f}%".format(float(tmp))
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except:
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self.__brightness = "n/a"
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# vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4
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