Skip to content

Instantly share code, notes, and snippets.

@t184256
Created Jan 19, 2018
Embed
What would you like to do?
An admittedly messy keyboard layout remapper for a Japanese X220.
#!/usr/bin/python3
# Sorry everyone, it's a real mess.
import atexit
import inspect
import evdev
import evdev.ecodes as ec
MATCH = 'AT Translated Set 2 keyboard'
SHORT = {
'C_LOCK': 'CAPSLOCK',
'INS': 'INSERT', 'DEL': 'DELETE',
'LEFT': 'LEFT_ARROW', 'RIGHT': 'RIGHT_ARROW',
'UP': 'UP_ARROW', 'DOWN': 'DOWN_ARROW',
'LSHIFT': 'LEFTSHIFT', 'RSHIFT': 'RIGHTSHIFT',
'LCTRL': 'LEFTCTRL', 'RCTRL': 'RIGHTCTRL',
'LALT': 'LEFTALT', 'RALT': 'RIGHTALT',
'LWIN': 'LEFTWINDOWS', 'RWIN': 'RIGHTWINDOWS',
'PGUP': 'PAGE_UP', 'PGDN': 'PAGE_DOWN',
'BS': 'BACKSPACE', 'RET': 'ENTER',
'`': 'GRAVE', '\'': 'APOSTROPHE', '=': 'EQUAL',
',': 'COMMA', '.': 'DOT', '-': 'MINUS',
'/': 'SLASH', '\\': 'BACKSLASH',
';': 'SEMICOLON',
'[': 'LEFTBRACE', ']': 'RIGHTBRACE',
'#': None,
'CTRLESC': 'LEFTCTRL',
'SPS': 'RIGHTSHIFT',
'FN': 'WAKEUP',
'ENT': 'ENTER',
'WIN': 'LEFTMETA',
'ALT': 'LEFTALT', 'RA': 'RIGHTALT', 'CP': 'COMPOSE',
'XX1': 'MUHENKAN', 'XX2': 'HENKAN', 'XX3': 'KATAKANAHIRAGANA',
'LANG/LEAD': 'RIGHTALT',
}
ex = lambda k: SHORT[k] if k in SHORT else k
expand = lambda layout: [ex(k) for k in layout]
keyify = lambda s: eval('ec.KEY_' + s) if isinstance(s, str) else s
HARDWARE = r'''
ESC F1 F2 F3 F4 F5 F6 F7 F8 F9 F10 F11 F12 PAUSE
` 1 2 3 4 5 6 7 8 9 0 - = YEN BS
TAB Q W E R T Y U I O P [ ]
C_LOCK A S D F G H J K L ; ' \ RET
LSHIFT Z X C V B N M , . / RO RSHIFT
LCTRL FN WIN ALT XX1 SPACE XX2 XX3 RA CP RCTRL BACK
'''
QWERTY_RU = r'''
ESC F1 F2 F3 F4 F5 F6 F7 F8 F9 F10 F11 F12 PAUSE
` 1 2 3 4 5 # 6 7 8 9 0 - # #
TAB Q W E R T # Y U I O P [
CTRLESC A S D F G # H J K L ; ' ]
Z X C V B # # N M , . / RSHIFT
# = WIN ALT BS LANG/LEAD ENT SPS # # # #
'''
COLEMAK = r'''
ESC F1 F2 F3 F4 F5 F6 F7 F8 F9 F10 F11 F12 PAUSE
` 1 2 3 4 5 # 6 7 8 9 0 - # #
TAB Q W F P G # J L U Y ; \
CTRLESC A R S T D # H N E I O ' #
Z X C V B # # K M , . / RSHIFT
# = WIN ALT BS LANG/LEAD ENT SPS # # [ ]
'''
MODBUTTONS = {
'CTRLESC': 'ESC',
'SPS': 'SPACE',
'LANG/LEAD': 'SPACE',
}
BACK_PAIRS = dict(zip(COLEMAK.split(), HARDWARE.split()))
MODBUTTONS = {keyify(ex(BACK_PAIRS[orig])): keyify(to)
for orig, to in MODBUTTONS.items()}
LANGUAGE_SWITCH_KEY = keyify(BACK_PAIRS['LANG/LEAD'])
def make_layout(target, hardware):
target, hardware = target.split(), hardware.split()
remap_pairs = dict(zip(expand(hardware), expand(target)))
return {keyify(orig): keyify(to) for orig, to in remap_pairs.items()}
COLEMAK, QWERTY_RU = make_layout(COLEMAK, HARDWARE), make_layout(QWERTY_RU, HARDWARE)
def is_abort(ev):
return (ev.type == ec.EV_KEY and ev.code == ec.KEY_PAUSE and ev.value == 1)
devices = [evdev.InputDevice(fn).name for fn in evdev.list_devices()]
devices = [evdev.InputDevice(fn) for fn in evdev.list_devices()]
kbd = [d for d in devices if MATCH in d.name][0]
atexit.register(kbd.ungrab)
kbd.grab()
current_layout = COLEMAK
prev_ev = None
solo = None
with evdev.UInput.from_device(kbd, name='kbdremap') as ui:
for ev in kbd.read_loop():
if is_abort(ev):
break
sec, usec = ev.sec, ev.usec
etype, code, value = ev.type, ev.code, ev.value
if etype == ec.EV_KEY:
#print('-', evdev.categorize(ev), ev.value)
if code in current_layout:
remap = current_layout[ev.code]
if remap is None:
pass
else:
if ev.code not in MODBUTTONS:
code = remap
ui.write(etype, code, value)
if value == 1:
solo = None
else:
if ev.code == LANGUAGE_SWITCH_KEY:
current_layout = QWERTY_RU if ev.value else COLEMAK
mod_code, solo_code = remap, MODBUTTONS[ev.code]
if solo != solo_code and value == 1:
solo = solo_code
ui.write(etype, mod_code, value)
elif solo == solo_code and ev.value == 0:
solo = None
ui.write(etype, mod_code, 0)
ui.write(etype, solo_code, 1)
ui.write(etype, solo_code, 0)
elif solo == solo_code and value == 2:
ui.write(etype, mod_code, value)
solo = None # abort soloing on long presses
else:
solo = None
ui.write(etype, mod_code, value)
else:
ui.write(etype, code, value)
prev_ev = ev
else:
ui.write(etype, code, value)
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment