Gestion de l'icône de volume dans la barre de notifications sous OpenBSD

#!/usr/local/bin/python3
import os
import sys
from gi import require_version
require_version("Gtk", "3.0")
from gi.repository import Gtk, Gdk

name="Volume"

def get_lvl():
    cmd = "mixerctl -n outputs.master"
    result = os.popen(cmd)
    result = result.readline().split(",")[0]
    lvl= int(int(result)/255*100)
    return lvl

def get_mute():
    cmd = "mixerctl -n outputs.master.mute"
    result = os.popen(cmd)
    result = result.readline().strip()
    return(result)

class Menu:

    def destroy(self, widget, data=None):
        Gtk.main_quit()

    def set_icon(self):
        if get_mute() == "on":
            self.tray.set_from_icon_name("stock_volume-mute")
        else:
            lvl = get_lvl()
            if lvl == 0:
                self.tray.set_from_icon_name("stock_volume-0")
            elif lvl < 20:
                self.tray.set_from_icon_name("stock_volume-min")
            elif lvl < 70:
                self.tray.set_from_icon_name("stock_volume-med")
            elif lvl > 70:
                self.tray.set_from_icon_name("stock_volume-max")



    def __init__(self):
        get_mute()
        self.tray = Gtk.StatusIcon()
        self.set_icon()
        self.tray.connect('popup-menu', self.on_right_click)
        self.tray.connect('activate', self.on_left_click)
        self.tray.connect('scroll_event', self.on_scroll)
        self.tray.set_tooltip_text('Volume : {}%'.format(get_lvl()))

    def on_scroll(self, widget, event):
        if event.direction == Gdk.ScrollDirection.DOWN:
            os.system("mixerctl outputs.master=-10")
        elif event.direction == Gdk.ScrollDirection.UP:
            os.system("mixerctl outputs.master=+10")
        self.set_icon()

    def on_left_click(self, event):
        os.system("mixerctl outputs.master.mute=toggle")
        self.set_icon()

    def on_right_click(self, icon, button, time):
        # Quit-menu item
        self.menu = Gtk.Menu()
        box = Gtk.Box()
        box.set_spacing(10)

        img = Gtk.Image()
        img.set_from_stock(Gtk.STOCK_CANCEL, Gtk.IconSize.MENU)
        label = Gtk.Label("Quit")
        box.add(img)
        box.add(label)
        quit = Gtk.MenuItem()
        quit.add(box)
        quit.connect("activate", Gtk.main_quit)
        self.menu.append(quit)

        self.menu.show_all()

        self.menu.popup(None, None, None, self.tray, button, time)

    def main(self):
        Gtk.main()

if __name__ == "__main__":
     app = Menu()
     app.main()