# Copyright (c) 2021 Graeme Holliday
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
from dbus_next.aio import MessageBus
from dbus_next.constants import BusType
from libqtile.widget import base
BLUEZ = "org.bluez"
BLUEZ_PATH = "/org/bluez/hci0"
BLUEZ_ADAPTER = "org.bluez.Adapter1"
BLUEZ_DEVICE = "org.bluez.Device1"
BLUEZ_PROPERTIES = "org.freedesktop.DBus.Properties"
[docs]class Bluetooth(base._TextBox):
"""
Displays bluetooth status for a particular connected device.
(For example your bluetooth headphones.)
Uses dbus-next to communicate with the system bus.
Widget requirements: dbus-next_.
.. _dbus-next: https://pypi.org/project/dbus-next/
"""
defaults = [
(
"hci",
"/dev_XX_XX_XX_XX_XX_XX",
"hci0 device path, can be found with d-feet or similar dbus explorer.",
)
]
def __init__(self, **config):
base._TextBox.__init__(self, "", **config)
self.add_defaults(Bluetooth.defaults)
async def _config_async(self):
# set initial values
self.powered = await self._init_adapter()
self.connected, self.device = await self._init_device()
self.update_text()
async def _init_adapter(self):
# set up interface to adapter properties using high-level api
bus = await MessageBus(bus_type=BusType.SYSTEM).connect()
introspect = await bus.introspect(BLUEZ, BLUEZ_PATH)
obj = bus.get_proxy_object(BLUEZ, BLUEZ_PATH, introspect)
iface = obj.get_interface(BLUEZ_ADAPTER)
props = obj.get_interface(BLUEZ_PROPERTIES)
powered = await iface.get_powered()
# subscribe receiver to property changed
props.on_properties_changed(self._adapter_signal_received)
return powered
async def _init_device(self):
# set up interface to device properties using high-level api
bus = await MessageBus(bus_type=BusType.SYSTEM).connect()
introspect = await bus.introspect(BLUEZ, BLUEZ_PATH + self.hci)
obj = bus.get_proxy_object(BLUEZ, BLUEZ_PATH + self.hci, introspect)
iface = obj.get_interface(BLUEZ_DEVICE)
props = obj.get_interface(BLUEZ_PROPERTIES)
connected = await iface.get_connected()
name = await iface.get_name()
# subscribe receiver to property changed
props.on_properties_changed(self._device_signal_received)
return connected, name
def _adapter_signal_received(
self, interface_name, changed_properties, _invalidated_properties
):
powered = changed_properties.get("Powered", None)
if powered is not None:
self.powered = powered.value
self.update_text()
def _device_signal_received(
self, interface_name, changed_properties, _invalidated_properties
):
connected = changed_properties.get("Connected", None)
if connected is not None:
self.connected = connected.value
self.update_text()
device = changed_properties.get("Name", None)
if device is not None:
self.device = device.value
self.update_text()
def update_text(self):
text = ""
if not self.powered:
text = "off"
else:
if not self.connected:
text = "on"
else:
text = self.device
self.update(text)