import re
from libqtile.log_utils import logger
from libqtile.utils import add_signal_receiver
from libqtile.widget import base
[docs]
class KeyboardKbdd(base.BackgroundPoll):
"""Widget for changing keyboard layouts per window, using kbdd
kbdd should be installed and running, you can get it from:
https://github.com/qnikst/kbdd
The widget also requires dbus-fast_.
.. _dbus-fast: https://pypi.org/project/dbus-fast/
"""
defaults = [
("update_interval", 1, "Update interval in seconds."),
(
"configured_keyboards",
["us", "ir"],
"your predefined list of keyboard layouts.example: ['us', 'ir', 'es']",
),
(
"colours",
None,
"foreground colour for each layout"
"either 'None' or a list of colours."
"example: ['ffffff', 'E6F0AF']. ",
),
]
def __init__(self, **config):
base.BackgroundPoll.__init__(self, "", **config)
self.add_defaults(KeyboardKbdd.defaults)
self.keyboard = self.configured_keyboards[0]
self.is_kbdd_running = self._check_kbdd()
if not self.is_kbdd_running:
self.keyboard = "N/A"
def _check_kbdd(self):
try:
running_list = self.call_process(["ps", "axw"])
except FileNotFoundError:
logger.error("'ps' is not installed. Cannot check if kbdd is running.")
return False
if re.search("kbdd", running_list):
self.keyboard = self.configured_keyboards[0]
return True
logger.error("kbdd is not running.")
return False
async def _config_async(self):
subscribed = await add_signal_receiver(
self._signal_received,
session_bus=True,
signal_name="layoutChanged",
dbus_interface="ru.gentoo.kbdd",
)
if not subscribed:
logger.warning("Could not subscribe to kbdd signal.")
def _signal_received(self, message):
self._layout_changed(*message.body)
def _layout_changed(self, layout_changed):
"""
Handler for "layoutChanged" dbus signal.
"""
if self.colours:
self._set_colour(layout_changed)
self.keyboard = self.configured_keyboards[layout_changed]
def _set_colour(self, index):
if isinstance(self.colours, list):
try:
self.layout.colour = self.colours[index]
except IndexError:
self._set_colour(index - 1)
else:
logger.error(
'variable "colours" should be a list, to set a\
colour for all layouts, use "foreground".'
)
def poll(self):
if not self.is_kbdd_running:
if self._check_kbdd():
self.is_kbdd_running = True
return self.configured_keyboards[0]
return self.keyboard