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# ========================================================================== #
# #
# KVMD - The main PiKVM daemon. #
# #
# Copyright (C) 2018-2022 Maxim Devaev <[email protected]> #
# #
# 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 math
from ....mouse import MouseRange
# =====
class Mouse: # pylint: disable=too-many-instance-attributes
def __init__(self) -> None:
self.__absolute = True
self.__buttons = 0
self.__to_x = (0, 0)
self.__to_y = (0, 0)
self.__delta_x = 0
self.__delta_y = 0
self.__wheel_y = 0
def set_absolute(self, flag: bool) -> None:
self.__absolute = flag
def is_absolute(self) -> bool:
return self.__absolute
def process_button(self, button: str, state: bool) -> bytes:
code = 0x00
match button:
case "left":
code = 0x01
case "right":
code = 0x02
case "middle":
code = 0x04
case "up":
code = 0x08
case "down":
code = 0x10
if code:
if state:
self.__buttons |= code
else:
self.__buttons &= ~code
self.__wheel_y = 0
if not self.__absolute:
return self.__make_relative_cmd()
else:
return self.__make_absolute_cmd()
def process_move(self, to_x: int, to_y: int) -> bytes:
self.__to_x = self.__fix_absolute(to_x)
self.__to_y = self.__fix_absolute(to_y)
self.__wheel_y = 0
return self.__make_absolute_cmd()
def __fix_absolute(self, value: int) -> tuple[int, int]:
assert MouseRange.MIN <= value <= MouseRange.MAX
to_fixed = math.ceil(MouseRange.remap(value, 0, MouseRange.MAX) / 8)
return (to_fixed >> 8, to_fixed & 0xFF)
def process_wheel(self, delta_x: int, delta_y: int) -> bytes:
_ = delta_x
assert -127 <= delta_y <= 127
self.__wheel_y = (1 if delta_y > 0 else 255)
if not self.__absolute:
return self.__make_relative_cmd()
else:
return self.__make_absolute_cmd()
def process_relative(self, delta_x: int, delta_y: int) -> bytes:
self.__delta_x = self.__fix_relative(delta_x)
self.__delta_y = self.__fix_relative(delta_y)
self.__wheel_y = 0
return self.__make_relative_cmd()
def __make_absolute_cmd(self) -> bytes:
return bytes([
0, 0x04, 0x07, 0x02,
self.__buttons,
self.__to_x[1], self.__to_x[0],
self.__to_y[1], self.__to_y[0],
self.__wheel_y,
])
def __make_relative_cmd(self) -> bytes:
return bytes([
0, 0x05, 0x05, 0x01,
self.__buttons,
self.__delta_x, self.__delta_y,
self.__wheel_y,
])
def __fix_relative(self, value: int) -> int:
assert -127 <= value <= 127
value = math.ceil(value / 3)
return (value if value >= 0 else (255 + value))
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