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# -*- coding: utf-8 -*-
# input-remapper - GUI for device specific keyboard mappings
# Copyright (C) 2025 sezanzeb <b8x45ygc9@mozmail.com>
#
# 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/>.
import asyncio
import time
import evdev
from evdev.ecodes import EV_REL
from inputremapper.configs.input_config import InputCombination, InputConfig
from inputremapper.configs.mapping import Mapping
from inputremapper.injection.global_uinputs import GlobalUInputs
from inputremapper.injection.mapping_handlers.mapping_handler import (
MappingHandler,
InputEventHandler,
)
from inputremapper.input_event import InputEvent, EventActions
from inputremapper.logging.logger import logger
class RelToBtnHandler(MappingHandler):
"""Handler which transforms an EV_REL to a button event
and sends that to a sub_handler
adheres to the MappingHandler protocol
"""
_active: bool
_input_config: InputConfig
_last_activation: float
_sub_handler: InputEventHandler
def __init__(
self,
combination: InputCombination,
mapping: Mapping,
global_uinputs: GlobalUInputs,
**_,
) -> None:
super().__init__(combination, mapping, global_uinputs)
self._active = False
self._input_config = combination[0]
self._last_activation = time.time()
self._abort_release = False
assert self._input_config.analog_threshold != 0
assert len(combination) == 1
def __str__(self):
return f'RelToBtnHandler for "{self._input_config}"'
def __repr__(self):
return f"<{str(self)} at {hex(id(self))}>"
@property
def child(self): # used for logging
return self._sub_handler
async def _stage_release(
self,
source: InputEvent,
suppress: bool,
):
while time.time() < self._last_activation + self.mapping.release_timeout:
await asyncio.sleep(1 / self.mapping.rel_rate)
if self._abort_release:
self._abort_release = False
return
event = InputEvent(
0,
0,
*self._input_config.type_and_code,
value=0,
actions=(EventActions.as_key,),
origin_hash=self._input_config.origin_hash,
)
logger.debug("Sending %s to sub_handler", event)
self._sub_handler.notify(event, source, suppress)
self._active = False
def notify(
self,
event: InputEvent,
source: evdev.InputDevice,
suppress: bool = False,
) -> bool:
assert event.type == EV_REL
if event.input_match_hash != self._input_config.input_match_hash:
return False
assert (threshold := self._input_config.analog_threshold)
value = event.value
if (value < threshold > 0) or (value > threshold < 0):
if self._active:
# the axis is below the threshold and the stage_release
# function is running
if self.mapping.force_release_timeout:
# consume the event
return True
event = event.modify(value=0, actions=(EventActions.as_key,))
logger.debug("Sending %s to sub_handler", event)
self._abort_release = True
else:
# don't consume the event.
# We could return True to consume events
return False
else:
# the axis is above the threshold
if not self._active:
asyncio.ensure_future(self._stage_release(source, suppress))
if value >= threshold > 0:
direction = EventActions.positive_trigger
else:
direction = EventActions.negative_trigger
self._last_activation = time.time()
event = event.modify(value=1, actions=(EventActions.as_key, direction))
self._active = bool(event.value)
# logger.debug("Sending %s to sub_handler", event)
return self._sub_handler.notify(event, source=source, suppress=suppress)
def reset(self) -> None:
if self._active:
self._abort_release = True
self._active = False
self._sub_handler.reset()
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