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Update filtering.py with blacklist #19

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Update filtering.py with blacklist #19

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12 changes: 10 additions & 2 deletions src/filtering.py
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Original file line number Diff line number Diff line change
Expand Up @@ -25,8 +25,16 @@ def _from_keystroke(event: libevdev.InputEvent, threshold: int) -> bool:
if event.matches(libevdev.EV_SYN) or event.matches(libevdev.EV_MSC):
return False

# filtering keys that are held down for combinations disable said combination from working (i.e. shift+d for D)
blacklist = event.matches(libevdev.EV_KEY.KEY_RIGHTALT) or\
event.matches(libevdev.EV_KEY.KEY_LEFTALT) or\
event.matches(libevdev.EV_KEY.KEY_RIGHTSHIFT) or\
event.matches(libevdev.EV_KEY.KEY_LEFTSHIFT) or\
event.matches(libevdev.EV_KEY.KEY_RIGHTCTRL) or\
event.matches(libevdev.EV_KEY.KEY_LEFTCTRL)

# some events we don't want to filter, like EV_LED for toggling NumLock and the like, and also key hold events
if not event.matches(libevdev.EV_KEY) or event.value > 1:
if blacklist or not event.matches(libevdev.EV_KEY) or event.value > 1:
logging.debug(f'FORWARDING {event.code}')
return True

Expand Down Expand Up @@ -55,4 +63,4 @@ def _from_keystroke(event: libevdev.InputEvent, threshold: int) -> bool:


_last_key_up: Dict[libevdev.EventCode, int] = {}
_key_pressed: DefaultDict[libevdev.EventCode, bool] = defaultdict(bool)
_key_pressed: DefaultDict[libevdev.EventCode, bool] = defaultdict(bool)