mirror of
https://github.com/sezanzeb/input-remapper
synced 2024-11-02 15:40:19 +00:00
149 lines
4.2 KiB
Python
149 lines
4.2 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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"""Inject a keycode based on the mapping."""
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import asyncio
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import evdev
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from evdev.ecodes import EV_KEY, EV_ABS, ABS_MISC
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from keymapper.logger import logger
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from keymapper.dev.ev_abs_mapper import JOYSTICK
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# maps mouse buttons to macro instances that have been executed. They may
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# still be running or already be done.
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active_macros = {}
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def should_map_event_as_btn(ev_type, code):
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"""Does this event describe a button.
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Especially important for gamepad events, some of the buttons
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require special rules.
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Parameters
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----------
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ev_type : int
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one of evdev.events
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code : int
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linux keycode
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"""
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if ev_type == EV_KEY:
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return True
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if ev_type == EV_ABS and code not in JOYSTICK:
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return True
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return False
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def is_key_down(event):
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"""Is this event a key press."""
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if event.type == EV_KEY:
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# might be 2 for hold
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return event.value == 1
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# for all other event types, just fire for anything that is not 0
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return event.value != 0
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def is_key_up(event):
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"""Is this event a key release."""
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return event.value == 0
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def handle_keycode(code_to_code, macros, event, uinput):
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"""Write the mapped keycode or forward unmapped ones.
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Parameters
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----------
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code_to_code : dict
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mapping of linux-keycode to linux-keycode
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macros : dict
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mapping of linux-keycode to _Macro objects
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event : evdev.InputEvent
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"""
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if event.value == 2:
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# button-hold event. Linux seems to create them on its own, no need
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# to inject them.
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return
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input_keycode = event.code
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input_type = event.type
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if input_keycode in macros:
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if is_key_up(event):
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# Tell the macro for that keycode that the key is released and
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# let it decide what to with that information.
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macro = active_macros.get(input_keycode)
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if macro is not None and macro.holding:
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macro.release_key()
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if not is_key_down(event):
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return
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existing_macro = active_macros.get(input_keycode)
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if existing_macro is not None:
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# make sure that a duplicate key-down event won't make a
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# macro with a hold function run forever. there should always
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# be only one active.
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# Furthermore, don't stop and rerun the macro because gamepad
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# triggers report events all the time just by releasing the key.
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if existing_macro.running:
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return
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macro = macros[input_keycode]
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active_macros[input_keycode] = macro
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macro.press_key()
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logger.spam(
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'got code:%s value:%s, maps to macro %s',
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input_keycode,
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event.value,
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macro.code
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)
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asyncio.ensure_future(macro.run())
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return
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if input_keycode in code_to_code:
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target_keycode = code_to_code[input_keycode]
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target_type = EV_KEY
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logger.spam(
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'got code:%s value:%s event:%s, maps to EV_KEY:%s',
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input_keycode,
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event.value,
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evdev.ecodes.EV[event.type],
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target_keycode
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)
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else:
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logger.spam(
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'got unmapped code:%s value:%s',
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input_keycode,
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event.value,
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)
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target_keycode = input_keycode
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target_type = input_type
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uinput.write(target_type, target_keycode, event.value)
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uinput.syn()
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