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# -*- coding: utf-8 -*-
# Copyright © 2016-2017 marmuta <marmvta@gmail.com>
#
# This file is part of Onboard.
#
# Onboard is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# Onboard is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import os
import socket
import select
import threading
from Onboard.utils import EventSource
from Onboard.GlobalKeyListener import GlobalKeyListener
import logging
_logger = logging.getLogger("HardwareSensorTracker")
from Onboard.Config import Config
config = Config()
class HardwareSensorTracker(EventSource):
""" Singleton class that keeps track of hardware sensors. """
_tablet_mode_event_names = ("tablet-mode-changed",)
_event_names = (("power-button-pressed",) +
_tablet_mode_event_names)
# Filenames and search patterns to determine convertible tablet-mode.
# Only some of the drivers that send SW_TABLET_MODE evdev events
# also provide sysfs attributes to read the current tablet-mode state.
_tablet_mode_state_files = (
# classmate-laptop.c
# nothing
# fujitsu-tablet.c
# nothing
# hp-wmi.c
("/sys/devices/platform/hp-wmi/tablet",
"1"),
# ideapad-laptop.c, only debugfs which requires root
# ("/sys/kernel/debug/ideapad/status",
# re.compile("Touchpad status:Off(0)")),
# thinkpad_acpi.c
("/sys/devices/platform/thinkpad_acpi/hotkey_tablet_mode",
"1"),
# xo15-ebook.c
# nothing
)
def __new__(cls, *args, **kwargs):
"""
Singleton magic.
"""
if not hasattr(cls, "self"):
cls.self = object.__new__(cls, *args, **kwargs)
cls.self.construct()
return cls.self
def __init__(self):
"""
Called multiple times, don't use this.
"""
pass
def construct(self):
"""
Singleton constructor, runs only once.
"""
EventSource.__init__(self, self._event_names)
self._acpid_listener = None
self._tablet_mode = None
self._key_listener = None
def cleanup(self):
EventSource.cleanup(self)
self._register_listeners(False)
def connect(self, event_name, callback):
EventSource.connect(self, event_name, callback)
self.update_sensor_sources()
def disconnect(self, event_name, callback):
had_listeners = self.has_listeners(self._event_names)
EventSource.disconnect(self, event_name, callback)
self.update_sensor_sources()
# help debugging disconnecting events on exit
if had_listeners and not self.has_listeners(self._event_names):
_logger.info("all listeners disconnected")
def update_sensor_sources(self):
register = self.has_listeners()
self._register_acpid_listeners(register)
register = self.has_listeners(self._tablet_mode_event_names)
self._register_hotkey_listeners(register)
def _register_listeners(self, register):
self._register_acpid_listeners(register)
self._register_hotkey_listeners(register)
def _register_acpid_listeners(self, register):
if bool(self._acpid_listener) != register:
if register:
self._acpid_listener = AcpidListener(self)
else:
self._acpid_listener.stop()
self._acpid_listener = None
def _register_hotkey_listeners(self, register):
enter_key = config.auto_show.tablet_mode_enter_key
leave_key = config.auto_show.tablet_mode_leave_key
if not enter_key and not leave_key:
register = False
if register:
if not self._key_listener:
self._key_listener = GlobalKeyListener()
self._key_listener.connect("key-press", self._on_key_press)
else:
if self._key_listener:
self._key_listener.disconnect("key-press", self._on_key_press)
self._key_listener = None
def set_tablet_mode(self, activ):
self._tablet_mode = activ
self.emit_async("tablet-mode-changed", activ)
def get_tablet_mode(self):
"""
Return value:
True = convertible is in tablet-mode
False = convertible is not in tablet-mode
None = mode unknown
"""
state = self._get_tablet_mode_state()
if state is None:
return self._tablet_mode
return state
def _get_tablet_mode_state(self):
"""
Read the state from known system files, if available.
Else return None.
"sysfs" files are read from kernel memory, shouldn't be
too expensive to do repeatedly.
"""
custom_state_file = config.auto_show.tablet_mode_state_file
custom_pattern = config.auto_show.tablet_mode_state_file_pattern
if custom_state_file:
candidates = ((custom_state_file, custom_pattern),)
else:
candidates = self._tablet_mode_state_files
for fn, pattern in candidates:
try:
with open(fn, "r", encoding="UTF-8") as f:
content = f.read(4096)
except IOError as ex:
_logger.debug("Opening '{}' failed: {}".format(fn, ex))
content = ""
if content:
if isinstance(pattern, str):
active = bool(pattern) and pattern in content
else:
active = bool(pattern.search(content))
_logger.info("read tablet_mode={} from '{}' with pattern '{}'"
.format(active, fn, pattern))
return active
return None
def _on_key_press(self, event):
""" Global hotkey press received """
enter_keycode = config.auto_show.tablet_mode_enter_key
leave_keycode = config.auto_show.tablet_mode_leave_key
if _logger.isEnabledFor(logging.INFO):
s = self._key_listener.get_key_event_string(event)
s += ", enter_keycode={}, leave_keycode={}".format(enter_keycode,
leave_keycode)
_logger.info("_on_key_press(): {}".format(s))
if enter_keycode and event.keycode == enter_keycode:
_logger.info("hotkey tablet_mode_enter_key {} received"
.format(enter_keycode))
self.set_tablet_mode(True)
if leave_keycode and event.keycode == leave_keycode:
_logger.info("hotkey tablet_mode_leave_key {} received"
.format(leave_keycode))
self.set_tablet_mode(False)
class AcpidListener:
""" Listen to events aggregated by acpid. """
def __init__(self, sensor_tracker):
super(AcpidListener, self).__init__()
self._sensor_tracker = sensor_tracker
self._exit_r = self._exit_w = None
self.start()
def start(self):
self._socket = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
fn = "/var/run/acpid.socket"
try:
self._socket.connect(fn)
except Exception as ex:
_logger.warning("Failed to connect to acpid, "
"SW_TABLET_MODE detection disabled. "
"('{}': {}) "
.format(fn, str(ex)))
return
self._socket.setblocking(False)
self._exit_r, self._exit_w = os.pipe()
self._thread = threading.Thread(name=self.__class__.__name__,
target=self._run)
self._thread.start()
def stop(self):
if self._exit_w:
os.write(self._exit_w, "x".encode())
self._thread.join(2)
_logger.info("AcpidListener: thread stopped, is_alive={}"
.format(self._thread.is_alive()))
def _run(self):
_logger.info("AcpidListener: thread start")
while True:
rl, wl, xl = select.select([self._exit_r, self._socket],
[], [self._socket])
if self._socket in rl:
data = self._socket.recv(4096)
elif self._exit_r in rl:
break
for event in data.decode("UTF-8", errors='replace').splitlines():
_logger.info("AcpidListener: ACPI event: '{}'"
.format(event))
if event == "button/power PBTN 00000080 00000000":
_logger.info("AcpidListener: power button")
self._sensor_tracker.emit_async("power-button-pressed")
elif event == "video/tabletmode TBLT 0000008A 00000001":
_logger.info("AcpidListener: tablet_mode True")
self._sensor_tracker.set_tablet_mode(True)
elif event == "video/tabletmode TBLT 0000008A 00000000":
_logger.info("AcpidListener: tablet_mode False")
self._sensor_tracker.set_tablet_mode(False)
self._socket.close()
self._socket.close()
os.close(self._exit_r)
os.close(self._exit_w)
_logger.info("AcpidListener: thread exit")
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