huion-keys/huion_keys.py
NeoTheFox 6bc1bac531 partial threaded input implementation
removed the config reload signal because it's becoming harder to
maintain thanks to threading
2021-04-16 22:55:23 +03:00

291 lines
10 KiB
Python
Executable File

#!/usr/bin/env python3
import os
import time
import argparse
import threading
import configparser
from _xdo_cffi import ffi, lib
CONFIG_FILE_PATH = None
TABLET_MODELS = {
"Kamvas Pro (2019)": "256c:006e",
"Q620M": "256c:006d",
}
BUTTON_BINDINGS = {}
BUTTON_BINDINGS_HOLD = {}
CYCLE_BUTTON = None
CYCLE_MODES = 1
DIAL_MODES = {}
BUTTON_BITS = {
0x01: 1,
0x02: 2,
0x04: 3,
0x08: 4,
0x10: 5,
0x20: 6,
0x40: 7,
0x80: 8,
}
def main():
#Commandline arguments processing
parser = argparse.ArgumentParser(
description='Linux utility to create custom key bindings for the Huion Kamvas Pro (2019), Inspiroy Q620M, and potentially other tablets.')
parser.add_argument('--rules', action='store_true', default=False,
help='print out the udev rules for known tablets and exit')
parser.add_argument('-c', '--config', type=str,
help='location of config file, ~/.config/huion_keys.conf by default')
args = parser.parse_args()
if args.rules:
make_rules()
return 0
global CONFIG_FILE_PATH
if args.config is None:
CONFIG_FILE_PATH = os.path.expanduser(os.path.join(
os.getenv('XDG_CONFIG_HOME', default='~/.config'), 'huion_keys.conf'))
else:
CONFIG_FILE_PATH = os.path.expanduser(args.config)
if os.path.isfile(CONFIG_FILE_PATH):
read_config(CONFIG_FILE_PATH)
else:
print("No config file found.")
create_default_config(CONFIG_FILE_PATH)
print("Created an example config file at " + CONFIG_FILE_PATH)
return 1
hidraw_paths = []
while True:
# search for a known tablet device
for device_name, device_id in TABLET_MODELS.items():
hidraw_path = get_tablet_hidraw(device_id)
if hidraw_path is not None:
hidraw_paths = hidraw_paths + hidraw_path
if hidraw_paths:
print("Found %s at %s" % (device_name, hidraw_paths))
break
elif not hidraw_paths:
print("Could not find any tablet hidraw devices")
time.sleep(2)
continue
threads = []
for hidraw_path in hidraw_paths:
thread = PollThread(hidraw_path)
thread.daemon = True
threads.append(thread)
thread.start()
for thread in threads:
thread.join()
class PollThread(threading.Thread):
cycle_mode = None
hidraw_path = None
xdo = None
SCROLL_STATE=None
def __init__(self, hidraw_path):
super(PollThread, self).__init__()
self.xdo = lib.xdo_new(ffi.NULL)
self.hidraw_path = hidraw_path
self.cycle_mode = 1
def run(self):
global BUTTON_BINDINGS, BUTTON_BINDINGS_HOLD, CYCLE_MODES, CYCLE_BUTTON
while True:
try:
hidraw = open(self.hidraw_path, 'rb')
break
except PermissionError as e:
print(e)
print("Trying again in 5 seconds...")
time.sleep(5)
continue
while True:
try:
btn = self.get_button_press(hidraw)
except OSError as e:
print("Lost connection with the tablet - searching for tablet...")
time.sleep(3)
break
print("Got button %s" % (btn,))
print(BUTTON_BINDINGS)
if btn == CYCLE_BUTTON and CYCLE_BUTTON is not None:
self.cycle_mode = self.cycle_mode + 1
if self.cycle_mode > CYCLE_MODES:
self.cycle_mode = 1
print("Cycling to mode %s" % (self.cycle_mode,))
elif self.cycle_mode in DIAL_MODES and btn in DIAL_MODES[self.cycle_mode]:
print("Sending %s from Mode %d" % (DIAL_MODES[self.cycle_mode][btn], self.cycle_mode),)
lib.xdo_send_keysequence_window(
self.xdo, lib.CURRENTWINDOW, DIAL_MODES[self.cycle_mode][btn], 1000)
elif btn in BUTTON_BINDINGS_HOLD:
print("Pressing %s" % (BUTTON_BINDINGS_HOLD[btn],))
lib.xdo_send_keysequence_window_down(self.xdo, lib.CURRENTWINDOW, BUTTON_BINDINGS_HOLD[btn], 12000)
self.get_button_release(hidraw)
print("Releasing %s" % (BUTTON_BINDINGS_HOLD[btn],))
lib.xdo_send_keysequence_window_up(xdo, lib.CURRENTWINDOW, BUTTON_BINDINGS_HOLD[btn], 12000)
elif btn in BUTTON_BINDINGS:
print("Sending %s" % (BUTTON_BINDINGS[btn],))
lib.xdo_send_keysequence_window(
self.xdo, lib.CURRENTWINDOW, BUTTON_BINDINGS[btn], 1000)
def get_button_press(self,hidraw):
while True:
sequence = hidraw.read(12)
# 0xf7 is what my Kamvas Pro 22 reads
# another model seems to send 0x08
# Q620M reads as 0xf9
if sequence[0] != 0xf7 and sequence[0] != 0x08 and sequence[0] != 0xf9:
pass
if sequence[1] == 0xe0: # buttons
# doesn't seem like the tablet will let you push two buttons at once
if sequence[4] > 0:
return BUTTON_BITS[sequence[4]]
elif sequence[5] > 0:
# right-side buttons are 8-15, so add 8
return BUTTON_BITS[sequence[5]] + 8
else:
# must be button release (all zeros)
continue
elif sequence[1] == 0xf0: # scroll strip
scroll_pos = sequence[5]
if scroll_pos == 0:
# reset scroll state after lifting finger off scroll strip
self.SCROLL_STATE = None
elif self.SCROLL_STATE is not None:
# scroll strip is numbered from top to bottom so a greater new
# value means they scrolled down
if scroll_pos > self.SCROLL_STATE:
self.SCROLL_STATE = scroll_pos
return 'scroll_down'
elif scroll_pos < self.SCROLL_STATE:
self.SCROLL_STATE = scroll_pos
return 'scroll_up'
else:
self.SCROLL_STATE = scroll_pos
continue
elif sequence[1] == 0xf1: # dial on Q620M, practically 2 buttons
if sequence[5] == 0x1:
return 'dial_cw'
elif sequence[5] == 0xff:
return 'dial_ccw'
else:
continue
def get_button_release(self,hidraw):
while True:
sequence = hidraw.read(12)
if sequence[1] == 0xe0 and sequence[4] == 0 and sequence[5] == 0:
return True
def get_tablet_hidraw(device_id):
"""Finds the /dev/hidrawX file or files that belong to the given device ID (in xxxx:xxxx format)."""
# TODO: is this too fragile?
hidraws = os.listdir('/sys/class/hidraw')
inputs = [];
for h in hidraws:
device_path = os.readlink(os.path.join('/sys/class/hidraw', h, 'device'))
if device_id.upper() in device_path:
# need to confirm that there's "input" because there are two or more hidraw
# files listed for the tablet, but only few of them carry the
# mouse/keyboard input
if os.path.exists(os.path.join('/sys/class/hidraw', h, 'device/input')):
inputs.append(os.path.join('/dev', os.path.basename(h)))
if inputs:
return inputs
return None
def read_config(config_file):
global CYCLE_MODES, CYCLE_BUTTON, BUTTON_BINDINGS, BUTTON_BINDINGS_HOLD
CONFIG = configparser.ConfigParser()
CONFIG.read(config_file)
# It is still better for performance to pre-encode these values
for binding in CONFIG['Bindings']:
if binding.isdigit():
# store button configs with their 1-indexed ID
BUTTON_BINDINGS[int(binding)] = CONFIG['Bindings'][binding].encode('utf-8')
elif binding == 'scroll_up':
BUTTON_BINDINGS['scroll_up'] = CONFIG['Bindings'][binding].encode('utf-8')
elif binding == 'scroll_down':
BUTTON_BINDINGS['scroll_down'] = CONFIG['Bindings'][binding].encode('utf-8')
elif binding == 'dial_cw':
BUTTON_BINDINGS['dial_cw'] = CONFIG['Bindings'][binding].encode('utf-8')
elif binding == 'dial_ccw':
BUTTON_BINDINGS['dial_ccw'] = CONFIG['Bindings'][binding].encode('utf-8')
elif binding == '':
continue # ignore empty line
else:
print("[WARN] unrecognized regular binding '%s'" % (binding,))
#Same, but for buttons that should be held down
if 'Hold' in CONFIG:
for binding in CONFIG['Hold']:
if binding.isdigit():
BUTTON_BINDINGS_HOLD[int(binding)] = CONFIG['Hold'][binding].encode('utf-8')
elif binding == '':
continue
else:
print ("[WARN] unrecognized hold binding '%s'" % (binding,))
# Assume that if cycle is assigned we have modes for now
if 'Dial' in CONFIG:
CYCLE_BUTTON = int(CONFIG['Dial']['cycle'])
for key in CONFIG:
if key.startswith("Mode"):
# Count the modes
mode = int(key.split(' ')[1])
if mode > CYCLE_MODES:
CYCLE_MODES = mode
DIAL_MODES[mode] = {}
for binding in CONFIG[key]:
DIAL_MODES[mode][binding] = CONFIG[key][binding].encode('utf-8')
def make_rules():
for device_name, device_id in TABLET_MODELS.items():
print("# %s" % (device_name, ))
VID, PID = device_id.split(':')
print('KERNEL=="hidraw*", ATTRS{idVendor}=="%s", ATTRS{idProduct}=="%s", MODE="0660", TAG+="uaccess"' % (VID, PID, ))
def create_default_config(config_file):
with open(config_file, 'w') as config:
config.write("""
# use one line for each button you want to configure
# buttons that aren't in this file will be ignored by this program
# (but may be handled by another driver)
[Bindings]
4=ctrl+s
5=ctrl+z
6=ctrl+shift+equal
7=ctrl+minus
# etc. up to the highest button number
16=Tab
scroll_up=bracketright
scroll_down=bracketleft
#Buttons that should be held instead of instantly firing
[Hold]
3=ctrl
#Q620M Dial
[Dial]
cycle = 9
[Mode 1]
dial_cw=6
dial_ccw=4
[Mode 2]
dial_cw=minus
dial_ccw=equal
""")
if __name__ == "__main__":
main()