mirror of
https://github.com/sezanzeb/input-remapper
synced 2024-11-02 15:40:19 +00:00
126 lines
3.9 KiB
Python
126 lines
3.9 KiB
Python
#!/usr/bin/python3
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# -*- coding: utf-8 -*-
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# key-mapper - GUI for device specific keyboard mappings
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# Copyright (C) 2020 sezanzeb <proxima@hip70890b.de>
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#
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# This file is part of key-mapper.
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#
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# key-mapper is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# key-mapper is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with key-mapper. If not, see <https://www.gnu.org/licenses/>.
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"""Starts injecting keycodes based on the configuration."""
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import subprocess
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from dbus import service
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import dbus.mainloop.glib
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from keymapper.logger import logger
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from keymapper.config import config
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from keymapper.injector import KeycodeInjector
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from keymapper.mapping import Mapping
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# TODO service file in data for a root daemon
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def is_service_running():
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"""Check if the daemon is running."""
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try:
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subprocess.check_output(['pgrep', '-f', 'key-mapper-service'])
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except subprocess.CalledProcessError:
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return False
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return True
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def get_dbus_interface():
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"""Get an interface to start and stop injecting keystrokes."""
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if not is_service_running():
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logger.error(
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'The daemon is not running, mapping keys only works as '
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'long as the window is open.'
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)
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return Daemon(autoload=False)
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logger.debug('Found the daemon process')
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bus = dbus.SessionBus()
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remote_object = bus.get_object('com.keymapper.Control', '/')
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interface = dbus.Interface(remote_object, 'com.keymapper.Interface')
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logger.debug('Connected to dbus')
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return interface
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class Daemon(service.Object):
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"""Starts injecting keycodes based on the configuration.
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Can be talked to either over dbus or by instantiating it.
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"""
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def __init__(self, *args, autoload=True, **kwargs):
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"""Constructs the daemon. You still need to run the GLib mainloop."""
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self.injectors = {}
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if autoload:
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for device, preset in config.iterate_autoload_presets():
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mapping = Mapping()
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mapping.load(device, preset)
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self.injectors[device] = KeycodeInjector(device, mapping)
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super().__init__(*args, **kwargs)
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@dbus.service.method(
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'com.keymapper.Interface',
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in_signature='s'
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)
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def stop_injecting(self, device):
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"""Stop injecting the mapping for a single device."""
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if self.injectors.get(device) is None:
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logger.error(
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'Tried to stop injector, but none is running for device "%s"',
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device
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)
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return
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self.injectors[device].stop_injecting()
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# TODO if ss is the correct signature for multiple parameters, add an
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# example to https://gitlab.freedesktop.org/dbus/dbus-python/-/blob/master/doc/tutorial.txt # noqa pylint: disable=line-too-long
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@dbus.service.method(
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'com.keymapper.Interface',
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in_signature='ss'
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)
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def start_injecting(self, device, preset):
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"""Start injecting the preset for the device.
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Returns True on success.
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"""
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if self.injectors.get(device) is not None:
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self.injectors[device].stop_injecting()
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mapping = Mapping()
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mapping.load(device, preset)
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try:
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self.injectors[device] = KeycodeInjector(device, mapping)
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except OSError:
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return False
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return True
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@dbus.service.method(
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'com.keymapper.Interface'
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)
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def stop(self):
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"""Properly stop the daemon."""
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for injector in self.injectors.values():
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injector.stop_injecting()
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