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#!/usr/bin/env python3
#
# Permission to use, copy, modify, distribute, and sell this software
# and its documentation for any purpose is hereby granted without
# fee, provided that the above copyright notice appear in all copies
# and that both that copyright notice and this permission notice
# appear in supporting documentation, and that the name of Red Hat
# not be used in advertising or publicity pertaining to distribution
# of the software without specific, written prior permission. Red
# Hat makes no representations about the suitability of this software
# for any purpose. It is provided "as is" without express or implied
# warranty.
#
# THE AUTHORS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
# INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN
# NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
# CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
# OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
# NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
# CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
#
import argparse
import configparser
import os
import sys
from pathlib import Path
try:
import libevdev
import pyudev
except ModuleNotFoundError as e:
print("Error: {}".format(str(e)), file=sys.stderr)
print(
"One or more python modules are missing. Please install those "
"modules and re-run this tool."
)
sys.exit(1)
def xdg_dir():
return Path(os.getenv("XDG_CONFIG_HOME", Path.home() / ".config")) / "libwacom"
class Ansi:
clearline = "\x1b[K"
@classmethod
def up(cls, count):
return f"\x1b[{count}A"
@classmethod
def down(cls, count):
return f"\x1b[{count}B"
@classmethod
def right(cls, count):
return f"\x1b[{count}C"
@classmethod
def left(cls, count):
return f"\x1b[{count}D"
def die(msg):
print(msg, file=sys.stderr)
sys.exit(1)
def select_device():
context = pyudev.Context()
for device in context.list_devices(subsystem="input"):
if device.get("ID_INPUT_TABLET", 0) and (device.device_node or "").startswith(
"/dev/input/event"
):
name = device.get("NAME", None)
if not name:
name = next(
(p.get("NAME") for p in device.ancestors if p.get("NAME")),
"unknown",
)
print("Using {}: {}".format(name or "unknown", device.device_node))
return device.device_node
die("Unable to find a tablet device.")
def record_events(ns):
with open(ns.device_path, "rb") as fd:
d = libevdev.Device(fd)
if not d.absinfo[libevdev.EV_ABS.ABS_MISC]:
die("Device only supports generic styli")
tool_bits = set(
c for c in libevdev.EV_KEY.codes if c.name.startswith("BTN_TOOL_")
)
styli = {} # dict of (type, serial) = proximity_state
current_type, current_serial = 0, 0
in_prox = False
dirty = False
print("Please put tool in proximity")
try:
while True:
for event in d.events():
if event.matches(libevdev.EV_ABS.ABS_MISC):
if event.value != 0:
current_type = event.value
dirty = True
elif event.matches(libevdev.EV_MSC.MSC_SERIAL):
if event.value != 0:
current_serial = event.value & 0xFFFFFFFF
dirty = True
elif event.code in tool_bits:
# print(f'Current prox: {event.value}')
in_prox = event.value != 0
dirty = True
elif event.matches(libevdev.EV_SYN.SYN_REPORT) and dirty:
dirty = False
print(
f"{Ansi.up(len(styli))}{Ansi.left(10000)}{Ansi.clearline}",
end="",
)
styli[(current_type, current_serial)] = in_prox
for s, prox in styli.items():
tid, serial = s
print(
f"Tool id {tid:#x} serial {serial:#x} in-proximity: {prox} "
)
except KeyboardInterrupt:
print("Terminating")
return [s[0] for s in styli.keys()]
def load_data_files():
lookup_paths = (
("./data/",),
("@DATADIR@", "@ETCDIR@", xdg_dir()),
("/usr/share/libwacom/", "/etc/libwacom/"),
)
stylusfiles = []
for paths in lookup_paths:
stylusfiles = []
for p in paths:
files = list(Path(p).glob("*.stylus"))
if files:
stylusfiles += files
if any(stylusfiles):
break
else:
die("Unable to find a libwacom.stylus data file")
print(f"Using stylus file(s): {', '.join([str(s) for s in stylusfiles])}")
styli = {}
for path in stylusfiles:
config = configparser.ConfigParser()
config.read(path)
for stylus_id in config.sections():
ids = stylus_id.split(":")
if len(ids) > 1:
_, sid = map(lambda x: int(x, 16), ids)
else:
_ = 0x56A # vid
sid = int(ids[0], 16)
# FIXME: vendor should be used here, let's do that when we figure out
# who needs it.
styli[sid] = config[stylus_id].get("Group", stylus_id)
return styli
def main():
parser = argparse.ArgumentParser(description="Tool to show tablet stylus ids")
parser.add_argument(
"device_path", nargs="?", default=None, help="Path to the /dev/input/event node"
)
ns = parser.parse_args()
if not ns.device_path:
ns.device_path = select_device()
all_styli = load_data_files()
styli = record_events(ns)
groups = []
for sid in styli:
if sid in all_styli:
groups.append(all_styli[sid])
else:
print(f"Unknown stylus id {sid:#x}. New entry needed")
print("Suggested line for .tablet file:")
print(f"Styli={';'.join(set(groups))}")
if __name__ == "__main__":
try:
main()
except PermissionError:
die("Insufficient permissions, please run me as root")
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