mirror of
https://github.com/mofeng-git/One-KVM.git
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119 lines
4.3 KiB
Python
119 lines
4.3 KiB
Python
# ========================================================================== #
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# #
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# KVMD - The main PiKVM daemon. #
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# #
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# Copyright (C) 2018-2024 Maxim Devaev <mdevaev@gmail.com> #
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# #
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# This program 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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# This program 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 this program. If not, see <https://www.gnu.org/licenses/>. #
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# #
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# ========================================================================== #
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import ctypes
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import ctypes.util
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from typing import Generator
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from .keysym import SymmapModifiers
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from .mappings import WebModifiers
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# =====
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def _load_libxkbcommon() -> ctypes.CDLL:
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path = ctypes.util.find_library("xkbcommon")
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if not path:
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raise RuntimeError("Where is libxkbcommon?")
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assert path
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lib = ctypes.CDLL(path)
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for (name, restype, argtypes) in [
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("xkb_utf32_to_keysym", ctypes.c_uint32, [ctypes.c_uint32]),
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]:
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func = getattr(lib, name)
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if not func:
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raise RuntimeError(f"Where is libc.{name}?")
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setattr(func, "restype", restype)
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setattr(func, "argtypes", argtypes)
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return lib
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_libxkbcommon = _load_libxkbcommon()
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def _ch_to_keysym(ch: str) -> int:
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assert len(ch) == 1
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return _libxkbcommon.xkb_utf32_to_keysym(ord(ch))
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# =====
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def text_to_web_keys( # pylint: disable=too-many-branches
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text: str,
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symmap: dict[int, dict[int, str]],
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) -> Generator[tuple[str, bool], None, None]:
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shift = False
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altgr = False
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for ch in text:
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# https://stackoverflow.com/questions/12343987/convert-ascii-character-to-x11-keycode
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# https://www.ascii-code.com
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if ch == "\n":
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keys = {0: "Enter"}
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elif ch == "\t":
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keys = {0: "Tab"}
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elif ch == " ":
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keys = {0: "Space"}
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else:
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if ch in ["‚", "‘", "’"]:
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ch = "'"
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elif ch in ["„", "“", "”"]:
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ch = "\""
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elif ch == "–": # Short
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ch = "-"
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elif ch == "—": # Long
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ch = "--"
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if not ch.isprintable():
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continue
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try:
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keys = symmap[_ch_to_keysym(ch)]
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except Exception:
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continue
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for (modifiers, key) in keys.items():
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if modifiers & SymmapModifiers.CTRL:
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# Not supported yet
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continue
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if modifiers & SymmapModifiers.SHIFT and not shift:
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yield (WebModifiers.SHIFT_LEFT, True)
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shift = True
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elif not (modifiers & SymmapModifiers.SHIFT) and shift:
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yield (WebModifiers.SHIFT_LEFT, False)
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shift = False
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if modifiers & SymmapModifiers.ALTGR and not altgr:
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yield (WebModifiers.ALT_RIGHT, True)
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altgr = True
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elif not (modifiers & SymmapModifiers.ALTGR) and altgr:
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yield (WebModifiers.ALT_RIGHT, False)
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altgr = False
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yield (key, True)
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yield (key, False)
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break
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if shift:
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yield (WebModifiers.SHIFT_LEFT, False)
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if altgr:
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yield (WebModifiers.ALT_RIGHT, False)
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