mirror of
https://github.com/erjiang/huion-keys.git
synced 2026-03-23 21:54:53 +03:00
98 lines
2.5 KiB
Python
98 lines
2.5 KiB
Python
import os
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from _xdo_cffi import ffi, lib
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BUTTON_BINDINGS = [
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# left side, top to bottom
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None,
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None,
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None,
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None,
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b'a',
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b'b',
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b'c',
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b'd',
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# right side, top to bottom
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None,
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None,
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None,
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None,
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b'e',
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b'f',
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b'g',
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b'h',
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# scroll strip, up/down
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# even though the Kamvas 22 (2019) has two scroll strips, they both send
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# the same button codes
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None,
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None,
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]
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def main():
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xdo = lib.xdo_new(ffi.NULL)
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hidraw_path = get_tablet_hidraw('256c', '006e')
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if hidraw_path is None:
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print("Could not find tablet hidraw device")
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print("Found tablet at " + hidraw_path)
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hidraw = open(hidraw_path, 'rb')
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while True:
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btn = get_button_press(hidraw)
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print("Got button %d" % (btn,))
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if BUTTON_BINDINGS[btn]:
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lib.xdo_send_keysequence_window(
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xdo, lib.CURRENTWINDOW, BUTTON_BINDINGS[btn], 10)
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def get_tablet_hidraw(vendor_id, product_id):
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"""Finds the /dev/hidrawX file that belongs to the given vendor and product ID."""
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# TODO: is this too fragile?
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hidraws = os.listdir('/sys/class/hidraw')
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for h in hidraws:
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device_path = os.readlink(os.path.join('/sys/class/hidraw', h, 'device'))
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if ("%s:%s" % (vendor_id.upper(), product_id.upper())) in device_path:
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# need to confirm that there's "input" because there are two hidraw
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# files listed for the tablet, but only one of them carries the
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# mouse/keyboard input
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if os.path.exists(os.path.join('/sys/class/hidraw', h, 'device/input')):
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return os.path.join('/dev', os.path.basename(h))
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return None
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BUTTON_BITS = {
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0x01: 0,
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0x02: 1,
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0x04: 2,
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0x08: 3,
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0x10: 4,
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0x20: 5,
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0x40: 6,
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0x80: 7,
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}
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def get_button_press(hidraw):
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while True:
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sequence = hidraw.read(12)
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# don't think there's anything we care about that doesn't start with 0xf7
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if sequence[0] != 0xf7:
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pass
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if sequence[1] == 0xe0: # buttons
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# doesn't seem like the tablet will let you push two buttons at once
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if sequence[4] > 0:
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return BUTTON_BITS[sequence[4]]
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elif sequence[5] > 0:
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# right-side buttons are 8-15, so add 8
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return BUTTON_BITS[sequence[5]] + 8
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else:
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# must be button release (all zeros)
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continue
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elif sequence[1] == 0xf0: # scroll strip
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pass # TODO: implement this
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if __name__ == "__main__":
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main()
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