diff options
Diffstat (limited to 'src/util/genkeymap.py')
| -rwxr-xr-x | src/util/genkeymap.py | 31 |
1 files changed, 26 insertions, 5 deletions
diff --git a/src/util/genkeymap.py b/src/util/genkeymap.py index 1bb494f83..081e314cc 100755 --- a/src/util/genkeymap.py +++ b/src/util/genkeymap.py @@ -219,12 +219,28 @@ class KeyMapping(UserDict[KeyModifiers, Sequence[Key]]): class BiosKeyMapping(KeyMapping): - """Keyboard mapping as used by the BIOS""" + """Keyboard mapping as used by the BIOS + + To allow for remappings of the somewhat interesting key 86, we + arrange for our keyboard drivers to generate this key as "\\|" + with the high bit set. + """ + + KEY_PSEUDO: ClassVar[int] = 0x80 + """Flag used to indicate a fake ASCII value""" + + KEY_NON_US_UNSHIFTED: ClassVar[str] = chr(KEY_PSEUDO | ord('\\')) + """Fake ASCII value generated for unshifted key code 86""" + + KEY_NON_US_SHIFTED: ClassVar[str] = chr(KEY_PSEUDO | ord('|')) + """Fake ASCII value generated for shifted key code 86""" @property def inverse(self) -> MutableMapping[str, Key]: inverse = super().inverse assert len(inverse) == 0x7f + inverse[self.KEY_NON_US_UNSHIFTED] = self.unshifted[self.KEY_NON_US] + inverse[self.KEY_NON_US_SHIFTED] = self.shifted[self.KEY_NON_US] assert all(x.modifiers in {KeyModifiers.NONE, KeyModifiers.SHIFT, KeyModifiers.CTRL} for x in inverse.values()) @@ -251,12 +267,13 @@ class KeyRemapping: raw = {source: self.target[key.modifiers][key.keycode].ascii for source, key in self.source.inverse.items()} # Eliminate any null mappings, mappings that attempt to remap - # the backspace key, or identity mappings + # the backspace key, or mappings that would become identity + # mappings after clearing the high bit table = {source: target for source, target in raw.items() if target and ord(source) != 0x7f and ord(target) != 0x7f - and ord(source) != ord(target)} + and ord(source) & ~BiosKeyMapping.KEY_PSEUDO != ord(target)} # Recursively delete any mappings that would produce # unreachable alphanumerics (e.g. the "il" keymap, which maps # away the whole lower-case alphabet) @@ -281,13 +298,17 @@ class KeyRemapping: """C variable name""" return re.sub(r'\W', '_', self.name) + "_mapping" - @staticmethod - def ascii_name(char: str) -> str: + @classmethod + def ascii_name(cls, char: str) -> str: """ASCII character name""" if char == '\\': name = "'\\\\'" elif char == '\'': name = "'\\\''" + elif ord(char) & BiosKeyMapping.KEY_PSEUDO: + name = "Pseudo-%s" % cls.ascii_name( + chr(ord(char) & ~BiosKeyMapping.KEY_PSEUDO) + ) elif char.isprintable(): name = "'%s'" % char elif ord(char) <= 0x1a: |