input-remapper/inputremapper/injection/mapping_handlers/key_handler.py
Tobi d13b38ee1e
Some formatting (#371)
* docstrings format

* trailing commas, comment positions

* trailing comma, unused imports
2022-04-18 13:52:59 +02:00

93 lines
3.0 KiB
Python

#!/usr/bin/python3
# -*- coding: utf-8 -*-
# input-remapper - GUI for device specific keyboard mappings
# Copyright (C) 2022 sezanzeb <proxima@sezanzeb.de>
#
# This file is part of input-remapper.
#
# input-remapper is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# input-remapper is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with input-remapper. If not, see <https://www.gnu.org/licenses/>.
from typing import Tuple, Dict, Optional
from inputremapper import exceptions
from inputremapper.configs.mapping import Mapping
from inputremapper.event_combination import EventCombination
from inputremapper.exceptions import MappingParsingError
from inputremapper.injection.mapping_handlers.mapping_handler import (
MappingHandler,
ContextProtocol,
HandlerEnums,
)
from inputremapper.logger import logger
from inputremapper.input_event import InputEvent
from inputremapper.injection.global_uinputs import global_uinputs
class KeyHandler(MappingHandler):
"""Injects the target key if notified."""
_active: bool
_maps_to: Tuple[int, int]
def __init__(
self,
combination: EventCombination,
mapping: Mapping,
**_,
):
super().__init__(combination, mapping)
maps_to = mapping.get_output_type_code()
if not maps_to:
raise MappingParsingError(
"unable to create key handler from mapping", mapping=mapping
)
self._maps_to = maps_to
self._active = False
def __str__(self):
return f"KeyHandler <{id(self)}>:"
def __repr__(self):
return self.__str__()
@property
def child(self): # used for logging
return f"maps to: {self._maps_to} on {self.mapping.target_uinput}"
def notify(self, event: InputEvent, *_, **__) -> bool:
"""Inject event.value to the target key."""
event_tuple = (*self._maps_to, event.value)
try:
global_uinputs.write(event_tuple, self.mapping.target_uinput)
logger.debug_key(event_tuple, "sending to %s", self.mapping.target_uinput)
self._active = bool(event.value)
return True
except exceptions.Error:
return False
def reset(self) -> None:
logger.debug("resetting key_handler")
if self._active:
event_tuple = (*self._maps_to, 0)
global_uinputs.write(event_tuple, self.mapping.target_uinput)
self._active = False
def needs_wrapping(self) -> bool:
return True
def wrap_with(self) -> Dict[EventCombination, HandlerEnums]:
return {EventCombination(self.input_events): HandlerEnums.combination}