bumblebee-status/bumblebee/modules/amixer.py

"""get volume level

"""
import re

import bumblebee.input
import bumblebee.output
import bumblebee.engine

class Module(bumblebee.engine.Module):
    def __init__(self, engine, config):
        super(Module, self).__init__(engine, config,
            bumblebee.output.Widget(full_text=self.volume)
        )
        self._level = "0"
        self._muted = True
        device = self.parameter("device", "Master,0")
        self._cmdString = "amixer get {}".format(device)

    def volume(self, widget):
        m = re.search(r'([\d]+)\%', self._level)
        self._muted = True
        if m:
            if m.group(1) != "0" and "[on]" in self._level:
                self._muted = False
            return "{}%".format(m.group(1))
        else:
            return "0%"

    def update(self, widgets):
        level = ""
        try:
            level = bumblebee.util.execute(self._cmdString)
        except Exception as e:
            level = ""

        self._level = level

    def state(self, widget):
        if self._muted:
            return ["warning", "muted"]
        return ["unmuted"]