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#!/usr/bin/env python3
# -*- 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/>.
from __future__ import annotations
import asyncio
from typing import Union
from evdev._ecodes import REL_Y, REL_X
from evdev.ecodes import EV_REL
from inputremapper.injection.macros.argument import ArgumentConfig
from inputremapper.injection.macros.macro import InjectEventCallback
from inputremapper.injection.macros.task import Task
from inputremapper.injection.macros.tasks.util import precise_iteration_frequency
class MouseXYTask(Task):
"""Move the mouse cursor."""
argument_configs = [
ArgumentConfig(
name="x",
position=0,
types=[int, float],
default=0,
),
ArgumentConfig(
name="y",
position=1,
types=[int, float],
default=0,
),
ArgumentConfig(
name="acceleration",
position=2,
types=[int, float],
default=1,
),
]
async def run(self, callback: InjectEventCallback) -> None:
x = self.get_argument("x").get_value()
y = self.get_argument("y").get_value()
acceleration = self.get_argument("acceleration").get_value()
await asyncio.gather(
self.axis(REL_X, x, acceleration, callback),
self.axis(REL_Y, y, acceleration, callback),
)
async def axis(
self,
code: int,
speed: Union[int, float],
fractional_acceleration: Union[int, float],
callback: InjectEventCallback,
) -> None:
acceleration = speed * fractional_acceleration
direction = -1 if speed < 0 else 1
current_speed = 0.0
displacement_accumulator = 0.0
displacement = 0
if acceleration <= 0:
displacement = int(speed)
async for _ in precise_iteration_frequency(self.mapping.rel_rate):
if not self.is_holding():
return
# Cursors can only move by integers. To get smooth acceleration for
# small acceleration values, the cursor needs to move by a pixel every
# few iterations. This can be achieved by remembering the decimal
# places that were cast away, and using them for the next iteration.
if acceleration:
current_speed += acceleration
current_speed = direction * min(abs(current_speed), abs(speed))
displacement_accumulator += current_speed
displacement = int(displacement_accumulator)
displacement_accumulator -= displacement
if displacement != 0:
callback(EV_REL, code, displacement)
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