mirror of
https://github.com/mofeng-git/One-KVM.git
synced 2025-12-12 09:10:30 +08:00
152 lines
5.6 KiB
Python
152 lines
5.6 KiB
Python
# ========================================================================== #
|
|
# #
|
|
# KVMD - The main Pi-KVM daemon. #
|
|
# #
|
|
# Copyright (C) 2018 Maxim Devaev <mdevaev@gmail.com> #
|
|
# #
|
|
# This program 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. #
|
|
# #
|
|
# This program 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 this program. If not, see <https://www.gnu.org/licenses/>. #
|
|
# #
|
|
# ========================================================================== #
|
|
|
|
|
|
import dataclasses
|
|
|
|
from typing import List
|
|
from typing import Set
|
|
from typing import Optional
|
|
from typing import Any
|
|
|
|
from ....logging import get_logger
|
|
|
|
from .... import keymap
|
|
|
|
from .hid import BaseEvent
|
|
from .hid import DeviceProcess
|
|
|
|
|
|
# =====
|
|
class _ClearEvent(BaseEvent):
|
|
pass
|
|
|
|
|
|
class _ResetEvent(BaseEvent):
|
|
pass
|
|
|
|
|
|
@dataclasses.dataclass(frozen=True)
|
|
class _KeyEvent(BaseEvent):
|
|
key: keymap.OtgKey
|
|
state: bool
|
|
|
|
|
|
# =====
|
|
class KeyboardProcess(DeviceProcess):
|
|
def __init__(self, **kwargs: Any) -> None:
|
|
super().__init__(name="keyboard", **kwargs)
|
|
|
|
self.__pressed_modifiers: Set[keymap.OtgKey] = set()
|
|
self.__pressed_keys: List[Optional[keymap.OtgKey]] = [None] * 6
|
|
|
|
def cleanup(self) -> None:
|
|
self._stop()
|
|
get_logger().info("Clearing HID-keyboard events ...")
|
|
if self._ensure_device():
|
|
try:
|
|
self._write_report(b"\x00" * 8) # Release all keys and modifiers
|
|
finally:
|
|
self._close_device()
|
|
|
|
def send_clear_event(self) -> None:
|
|
self._queue_event(_ClearEvent())
|
|
|
|
def send_reset_event(self) -> None:
|
|
self._queue_event(_ResetEvent())
|
|
|
|
def send_key_event(self, key: str, state: bool) -> None:
|
|
assert key in keymap.KEYMAP
|
|
self._queue_event(_KeyEvent(key=keymap.KEYMAP[key].otg, state=state))
|
|
|
|
# =====
|
|
|
|
def _process_event(self, event: BaseEvent) -> None:
|
|
if isinstance(event, _ClearEvent):
|
|
self.__process_clear_event()
|
|
elif isinstance(event, _ResetEvent):
|
|
self.__process_clear_event(reopen=True)
|
|
elif isinstance(event, _KeyEvent):
|
|
self.__process_key_event(event)
|
|
|
|
def __process_clear_event(self, reopen: bool=False) -> None:
|
|
self.__clear_modifiers()
|
|
self.__clear_keys()
|
|
if reopen:
|
|
self._close_device()
|
|
self.__send_current_state()
|
|
|
|
def __process_key_event(self, event: _KeyEvent) -> None:
|
|
if event.key.is_modifier:
|
|
if event.key in self.__pressed_modifiers:
|
|
# Ранее нажатый модификатор отжимаем
|
|
self.__pressed_modifiers.remove(event.key)
|
|
if not self.__send_current_state():
|
|
return
|
|
if event.state:
|
|
# Нажимаем если нужно
|
|
self.__pressed_modifiers.add(event.key)
|
|
self.__send_current_state()
|
|
|
|
else: # regular key
|
|
if event.key in self.__pressed_keys:
|
|
# Ранее нажатую клавишу отжимаем
|
|
self.__pressed_keys[self.__pressed_keys.index(event.key)] = None
|
|
if not self.__send_current_state():
|
|
return
|
|
elif event.state and None not in self.__pressed_keys:
|
|
# Если нужно нажать что-то новое, но свободных слотов нет - отжимаем всё
|
|
self.__clear_keys()
|
|
if not self.__send_current_state():
|
|
return
|
|
if event.state:
|
|
# Нажимаем если нужно
|
|
self.__pressed_keys[self.__pressed_keys.index(None)] = event.key
|
|
self.__send_current_state()
|
|
|
|
def __send_current_state(self) -> bool:
|
|
ok = False
|
|
if self._ensure_device():
|
|
modifiers = 0
|
|
for key in self.__pressed_modifiers:
|
|
assert key.is_modifier
|
|
modifiers |= key.code
|
|
|
|
assert len(self.__pressed_keys) == 6
|
|
keys = [
|
|
(0 if key is None else key.code)
|
|
for key in self.__pressed_keys
|
|
]
|
|
|
|
print(self.__pressed_modifiers, self.__pressed_keys)
|
|
ok = self._write_report(bytes([modifiers, 0] + keys))
|
|
|
|
if not ok:
|
|
self.__clear_modifiers()
|
|
self.__clear_keys()
|
|
return ok
|
|
|
|
def __clear_modifiers(self) -> None:
|
|
self.__pressed_modifiers.clear()
|
|
|
|
def __clear_keys(self) -> None:
|
|
self.__pressed_keys = [None] * 6
|