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133 lines
4.3 KiB
Python
133 lines
4.3 KiB
Python
#!/usr/bin/python3
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# -*- coding: utf-8 -*-
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# input-remapper - GUI for device specific keyboard mappings
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# Copyright (C) 2022 sezanzeb <proxima@sezanzeb.de>
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#
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# This file is part of input-remapper.
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#
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# input-remapper 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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# input-remapper 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 input-remapper. If not, see <https://www.gnu.org/licenses/>.
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import evdev
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import time
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import asyncio
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from typing import Optional, Dict
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from evdev.ecodes import EV_REL
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from inputremapper.configs.mapping import Mapping
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from inputremapper.logger import logger
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from inputremapper.input_event import InputEvent, EventActions
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from inputremapper.event_combination import EventCombination
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from inputremapper.injection.mapping_handlers.mapping_handler import (
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MappingHandler,
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ContextProtocol,
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HandlerEnums,
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InputEventHandler,
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)
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class RelToBtnHandler(MappingHandler):
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"""
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Handler which transforms an EV_REL to a button event
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and sends that to a sub_handler
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adheres to the MappingHandler protocol
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"""
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_active: bool
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_input_event: InputEvent
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_last_activation: float
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_sub_handler: InputEventHandler
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def __init__(
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self,
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combination: EventCombination,
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mapping: Mapping,
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**_,
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) -> None:
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super().__init__(combination, mapping)
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self._active = False
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self._input_event = combination[0]
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self._last_activation = time.time()
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self._abort_release = False
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assert self._input_event.value != 0
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assert len(combination) == 1
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def __str__(self):
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return f"RelToBtnHandler for {self._input_event.event_tuple} <{id(self)}>:"
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def __repr__(self):
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return self.__str__()
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@property
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def child(self): # used for logging
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return self._sub_handler
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async def _stage_release(self, source, forward, supress):
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while time.time() < self._last_activation + self.mapping.release_timeout:
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await asyncio.sleep(1 / self.mapping.rate)
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if self._abort_release:
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self._abort_release = False
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return
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event = self._input_event.modify(value=0, action=EventActions.as_key)
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logger.debug_key(event.event_tuple, "sending to sub_handler")
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self._sub_handler.notify(event, source, forward, supress)
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self._active = False
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def notify(
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self,
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event: InputEvent,
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source: evdev.InputDevice,
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forward: evdev.UInput,
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supress: bool = False,
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) -> bool:
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assert event.type == EV_REL
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if event.type_and_code != self._input_event.type_and_code:
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return False
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threshold = self._input_event.value
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value = event.value
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if (value < threshold > 0) or (value > threshold < 0):
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if self._active:
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# the axis is below the threshold and the stage_release function is running
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event = event.modify(value=0, action=EventActions.as_key)
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logger.debug_key(event.event_tuple, "sending to sub_handler")
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self._abort_release = True
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self._active = False
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return self._sub_handler.notify(event, source, forward, supress)
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else:
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# don't consume the event.
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# We could return True to consume events
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return False
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# the axis is above the threshold
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event = event.modify(value=1, action=EventActions.as_key)
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self._last_activation = time.time()
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if not self._active:
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logger.debug_key(event.event_tuple, "sending to sub_handler")
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asyncio.ensure_future(self._stage_release(source, forward, supress))
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self._active = True
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return self._sub_handler.notify(event, source, forward, supress)
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def reset(self) -> None:
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if self._active:
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self._abort_release = True
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self._active = False
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self._sub_handler.reset()
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