kmk-paintbrush/kmk/modules/oneshot.py

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from kmk.keys import make_argumented_key
from kmk.modules.holdtap import ActivationType, HoldTap, HoldTapKeyMeta
from kmk.modules.layers import LayerKeyMeta
from kmk.utils import Debug
debug = Debug(__name__)
class OneShotKeyMeta(HoldTapKeyMeta):
def __init__(self, kc, tap_time=None):
super().__init__(tap=kc, hold=kc, prefer_hold=False, tap_time=tap_time)
class OneShot(HoldTap):
tap_time = 1000
def __init__(self):
super().__init__()
make_argumented_key(
validator=OneShotKeyMeta,
names=('OS', 'ONESHOT'),
on_press=self.osk_pressed,
on_release=self.osk_released,
)
def process_key(self, keyboard, current_key, is_pressed, int_coord):
'''Release os key after interrupting non-os keyup, or reset timeout and
stack multiple os keys.'''
send_buffer = False
for key, state in self.key_states.items():
if key == current_key:
continue
if (isinstance(current_key.meta, OneShotKeyMeta)) or (
isinstance(current_key.meta, LayerKeyMeta)
):
keyboard.cancel_timeout(state.timeout_key)
if key.meta.tap_time is None:
tap_time = self.tap_time
else:
tap_time = key.meta.tap_time
state.timeout_key = keyboard.set_timeout(
tap_time,
lambda k=key: self.on_tap_time_expired(k, keyboard),
)
continue
if state.activated == ActivationType.PRESSED and is_pressed:
state.activated = ActivationType.HOLD_TIMEOUT
elif state.activated == ActivationType.RELEASED and is_pressed:
state.activated = ActivationType.INTERRUPTED
elif state.activated == ActivationType.INTERRUPTED:
if is_pressed:
send_buffer = True
self.key_buffer.insert(0, (None, key, False))
if send_buffer:
self.key_buffer.append((int_coord, current_key, is_pressed))
current_key = None
self.send_key_buffer(keyboard)
return current_key
def osk_pressed(self, key, keyboard, *args, **kwargs):
'''Register HoldTap mechanism and activate os key.'''
self.ht_pressed(key, keyboard, *args, **kwargs)
self.ht_activate_tap(key, keyboard, *args, **kwargs)
self.send_key_buffer(keyboard)
return keyboard
def osk_released(self, key, keyboard, *args, **kwargs):
'''On keyup, mark os key as released or handle HoldTap.'''
try:
state = self.key_states[key]
except KeyError:
if debug.enabled:
debug(f'OneShot.osk_released: no such key {key}')
return keyboard
if state.activated == ActivationType.PRESSED:
state.activated = ActivationType.RELEASED
else:
self.ht_released(key, keyboard, *args, **kwargs)
return keyboard