* fix(hotkeys): resolve combo letters via active XKB layout Settings capture stores character tokens from GDK keyvals (e.g. alt+a), but the Wayland/evdev path mapped letters to fixed US KEY_* codes. On AZERTY that made Alt+A listen for the key labeled Q. Resolve letter tokens through libxkbcommon for the active layout so recording and listening agree. Fixes #513 * refactor(hotkeys): slim layout-aware key resolution Drop unused resolve helper, dual knobs, setxkbmap/localectl probes, and redundant tests. Keep gsettings + libxkbcommon map and the AZERTY combo path. * test(hotkeys): drop redundant AZERTY resolve-only case Keep fire/no-fire combo coverage and the XKB fr map check. * test(hotkeys): cover layout map detection and error paths Raise patch coverage for layout_key_map / evdev_code_for_key so codecov patch target (80%) is met.
This commit is contained in:
Jatin K Malik
@@ -27,6 +27,7 @@ except ImportError:
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EVDEV_AVAILABLE = False
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from .base import DEFAULT_SHORTCUT, DEFAULT_SHORTCUT_MODE, KeyboardBackend, parse_shortcut
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from .layout_key_map import get_active_char_to_evdev_map
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logger = logging.getLogger(__name__)
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@@ -92,18 +93,26 @@ _NAMED_EVDEV_KEYS = {
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def evdev_code_for_key(token: str) -> Optional[int]:
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"""Resolve a canonical main-key token (e.g. "r", "f5", "space") to an evdev code."""
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"""Resolve a canonical main-key token (e.g. "r", "f5", "space") to an evdev code.
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Letters are character-semantic (GDK keyval). Non-US layouts remap via the
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active XKB map so AZERTY "a" hits KEY_Q, not US KEY_A.
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"""
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if not EVDEV_AVAILABLE or not token:
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return None
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name = _NAMED_EVDEV_KEYS.get(token)
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if name is None:
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if len(token) == 1 and token.isalnum():
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name = f"KEY_{token.upper()}"
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elif re.fullmatch(r"f\d+", token):
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name = f"KEY_{token.upper()}"
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if name is None:
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if name is not None:
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return getattr(ecodes, name, None)
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if len(token) == 1:
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layout_map = get_active_char_to_evdev_map()
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if layout_map and token in layout_map:
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return layout_map[token]
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if token.isalnum():
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return getattr(ecodes, f"KEY_{token.upper()}", None)
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return None
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return getattr(ecodes, name, None)
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if re.fullmatch(r"f\d+", token):
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return getattr(ecodes, f"KEY_{token.upper()}", None)
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return None
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def find_keyboard_devices() -> list[str]:
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@@ -0,0 +1,160 @@
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"""
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Layout-aware char → Linux/evdev keycodes via libxkbcommon.
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Settings store character tokens (GDK keyval); evdev matches physical KEY_*.
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On AZERTY, "a" is KEY_Q not KEY_A. This builds the map for the active layout.
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"""
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from __future__ import annotations
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import logging
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import re
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import subprocess
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from ctypes import CDLL, POINTER, Structure, byref, c_char_p, c_int, c_uint32, c_void_p
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from functools import lru_cache
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from typing import Optional
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logger = logging.getLogger(__name__)
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_XKB_EVDEV_OFFSET = 8
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_xkb_lib: object = None # None = untried, False = missing, else CDLL
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class _XkbRuleNames(Structure):
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_fields_ = [
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("rules", c_char_p),
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("model", c_char_p),
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("layout", c_char_p),
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("variant", c_char_p),
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("options", c_char_p),
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]
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def _load_xkbcommon():
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global _xkb_lib
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if _xkb_lib is not None:
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return _xkb_lib
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try:
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lib = CDLL("libxkbcommon.so.0")
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lib.xkb_context_new.argtypes = [c_int]
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lib.xkb_context_new.restype = c_void_p
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lib.xkb_keymap_new_from_names.argtypes = [c_void_p, POINTER(_XkbRuleNames), c_int]
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lib.xkb_keymap_new_from_names.restype = c_void_p
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lib.xkb_keymap_min_keycode.argtypes = [c_void_p]
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lib.xkb_keymap_min_keycode.restype = c_uint32
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lib.xkb_keymap_max_keycode.argtypes = [c_void_p]
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lib.xkb_keymap_max_keycode.restype = c_uint32
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lib.xkb_keymap_num_layouts_for_key.argtypes = [c_void_p, c_uint32]
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lib.xkb_keymap_num_layouts_for_key.restype = c_uint32
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lib.xkb_keymap_num_levels_for_key.argtypes = [c_void_p, c_uint32, c_uint32]
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lib.xkb_keymap_num_levels_for_key.restype = c_uint32
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lib.xkb_keymap_key_get_syms_by_level.argtypes = [
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c_void_p,
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c_uint32,
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c_uint32,
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c_uint32,
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POINTER(POINTER(c_uint32)),
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]
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lib.xkb_keymap_key_get_syms_by_level.restype = c_int
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lib.xkb_keysym_to_utf32.argtypes = [c_uint32]
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lib.xkb_keysym_to_utf32.restype = c_uint32
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lib.xkb_keymap_unref.argtypes = [c_void_p]
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lib.xkb_context_unref.argtypes = [c_void_p]
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_xkb_lib = lib
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except OSError as e:
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logger.debug("libxkbcommon not available: %s", e)
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_xkb_lib = False
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return _xkb_lib
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def build_char_to_evdev_map(layout: str, variant: str = "") -> Optional[dict[str, int]]:
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"""Unshifted (level 0) char → evdev keycode for an XKB layout, or None."""
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if not layout:
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return None
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lib = _load_xkbcommon()
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if not lib:
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return None
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ctx = lib.xkb_context_new(0)
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if not ctx:
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return None
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names = _XkbRuleNames(
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None,
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None,
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layout.encode("utf-8"),
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variant.encode("utf-8") if variant else None,
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None,
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)
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keymap = lib.xkb_keymap_new_from_names(ctx, byref(names), 0)
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if not keymap:
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lib.xkb_context_unref(ctx)
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return None
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char_map: dict[str, int] = {}
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try:
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for xkb_code in range(
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lib.xkb_keymap_min_keycode(keymap),
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lib.xkb_keymap_max_keycode(keymap) + 1,
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):
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if lib.xkb_keymap_num_layouts_for_key(keymap, xkb_code) == 0:
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continue
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if lib.xkb_keymap_num_levels_for_key(keymap, xkb_code, 0) == 0:
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continue
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syms_ptr = POINTER(c_uint32)()
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n_syms = lib.xkb_keymap_key_get_syms_by_level(keymap, xkb_code, 0, 0, byref(syms_ptr))
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if n_syms <= 0:
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continue
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utf32 = lib.xkb_keysym_to_utf32(syms_ptr[0])
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if utf32 < 32 or utf32 > 0x10FFFF:
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continue
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ch = chr(utf32)
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key = ch.lower() if ch.isalpha() else ch
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if key not in char_map:
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char_map[key] = int(xkb_code) - _XKB_EVDEV_OFFSET
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finally:
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lib.xkb_keymap_unref(keymap)
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lib.xkb_context_unref(ctx)
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return char_map or None
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def _detect_gnome_layout() -> tuple[str, str]:
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"""Current XKB source from GNOME gsettings (works on Wayland)."""
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try:
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for key in ("mru-sources", "sources"):
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result = subprocess.run(
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["gsettings", "get", "org.gnome.desktop.input-sources", key],
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capture_output=True,
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text=True,
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timeout=2,
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check=False,
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)
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if result.returncode != 0 or not result.stdout.strip():
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continue
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match = re.search(r"\(\s*'xkb'\s*,\s*'([^']+)'\s*\)", result.stdout)
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if not match:
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continue
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layout, _, variant = match.group(1).partition("+")
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return layout, variant
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except (OSError, subprocess.SubprocessError) as e:
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logger.debug("gsettings layout query failed: %s", e)
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return "", ""
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@lru_cache(maxsize=1)
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def get_active_char_to_evdev_map() -> Optional[dict[str, int]]:
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"""Cached char→evdev map for the active layout; None → use US KEY_* names."""
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layout, variant = _detect_gnome_layout()
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# ponytail: GNOME gsettings only; add setxkbmap/localectl if non-GNOME reports land
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if not layout or (layout == "us" and not variant):
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return None
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char_map = build_char_to_evdev_map(layout, variant)
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if char_map:
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logger.info(
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"Loaded layout-aware key map for XKB layout=%s variant=%s (%d chars)",
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layout,
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variant or "(none)",
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len(char_map),
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)
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return char_map
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