1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
|
# ========================================================================== #
# #
# KVMD - The main Pi-KVM daemon. #
# #
# Copyright (C) 2020 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 pkgutil
import functools
from typing import Tuple
from typing import List
from typing import Dict
import Xlib.keysymdef
from ..logging import get_logger
from .mappings import At1Key
from .mappings import X11_TO_AT1
from .mappings import AT1_TO_WEB
# =====
class SymmapModifiers:
SHIFT: int = 0x1
ALTGR: int = 0x2
CTRL: int = 0x4
def switch_symmap_modifiers(modifiers: int, code: int, state: bool) -> Tuple[bool, int]:
mod = 0
if code == 65505 or code == 65506: # XK_Shift_L, XK_Shift_R
mod = SymmapModifiers.SHIFT
elif code == 65027: # AltGR aka XK_ISO_Level3_Shift
mod = SymmapModifiers.ALTGR
elif code == 65507 or code == 65508: # XK_Control_L, XK_Control_R
mod = SymmapModifiers.CTRL
if mod == 0:
return (False, modifiers)
if state:
modifiers |= mod
else:
modifiers &= ~mod
return (True, modifiers)
def build_symmap(path: str) -> Dict[int, Dict[int, str]]:
# https://github.com/qemu/qemu/blob/95a9457fd44ad97c518858a4e1586a5498f9773c/ui/keymaps.c
logger = get_logger()
symmap: Dict[int, Dict[int, str]] = {}
for (src, items) in [
("<builtin>", list(X11_TO_AT1.items())),
(path, list(_read_keyboard_layout(path).items())),
]:
for (code, keys) in items:
for key in keys:
web_name = AT1_TO_WEB.get(key.code)
if web_name is not None:
if (
(web_name in ["ShiftLeft", "ShiftRight"] and key.shift) # pylint: disable=too-many-boolean-expressions
or (web_name in ["AltLeft", "AltRight"] and key.altgr)
or (web_name in ["ControlLeft", "ControlRight"] and key.ctrl)
):
logger.error("Invalid modifier key at mapping %s: %s / %s", src, web_name, key)
continue
if code not in symmap:
symmap[code] = {}
symmap[code][
0
| (SymmapModifiers.SHIFT if key.shift else 0)
| (SymmapModifiers.ALTGR if key.altgr else 0)
| (SymmapModifiers.CTRL if key.ctrl else 0)
] = web_name
return symmap
# =====
@functools.lru_cache()
def _get_keysyms() -> Dict[str, int]:
keysyms: Dict[str, int] = {}
for (loader, module_name, _) in pkgutil.walk_packages(Xlib.keysymdef.__path__):
module = loader.find_module(module_name).load_module(module_name)
for keysym_name in dir(module):
if keysym_name.startswith("XK_"):
short_name = keysym_name[3:]
if short_name.startswith("XF86_"):
short_name = "XF86" + short_name[5:]
# assert short_name not in keysyms, short_name
keysyms[short_name] = int(getattr(module, keysym_name))
return keysyms
def _resolve_keysym(name: str) -> int:
code = _get_keysyms().get(name)
if code is not None:
return code
if len(name) == 5 and name[0] == "U": # Try unicode Uxxxx
try:
return int(name[1:], 16)
except ValueError:
pass
return 0
def _read_keyboard_layout(path: str) -> Dict[int, List[At1Key]]: # Keysym to evdev (at1)
logger = get_logger(0)
logger.info("Reading keyboard layout %s ...", path)
with open(path) as layout_file:
lines = list(map(str.strip, layout_file.read().split("\n")))
layout: Dict[int, List[At1Key]] = {}
for (lineno, line) in enumerate(lines):
if len(line) == 0 or line.startswith(("#", "map ", "include ")):
continue
parts = line.split()
if len(parts) >= 2:
x11_code = _resolve_keysym(parts[0])
if x11_code == 0:
continue
try:
at1_code = int(parts[1], 16)
except ValueError as err:
logger.error("Syntax error at %s:%d: %s", path, lineno, err)
continue
rest = parts[2:]
if x11_code not in layout:
layout[x11_code] = []
layout[x11_code].append(At1Key(
code=at1_code,
shift=("shift" in rest),
altgr=("altgr" in rest),
ctrl=("ctrl" in rest),
))
if "addupper" in rest:
x11_code = _resolve_keysym(parts[0].upper())
if x11_code != 0:
if x11_code not in layout:
layout[x11_code] = []
layout[x11_code].append(At1Key(
code=at1_code,
shift=True,
))
return layout
|
