661 lines
24 KiB
Python
Executable File
661 lines
24 KiB
Python
Executable File
#!/usr/bin/env python3
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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import logging
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import errno
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from gi.repository import GObject, Gio, GLib
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from .drawing import Drawing
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logger = logging.getLogger('tuhi.dbus')
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INTROSPECTION_XML = '''
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<node>
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<interface name='org.freedesktop.tuhi1.Manager'>
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<property type='ao' name='Devices' access='read'>
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<annotation name='org.freedesktop.DBus.Property.EmitsChangedSignal' value='true'/>
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</property>
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<property type='ao' name='Searching' access='read'>
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<annotation name='org.freedesktop.DBus.Property.EmitsChangedSignal' value='true'/>
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</property>
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<property type='au' name='JSONDataVersions' access='read'>
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<annotation name='org.freedesktop.DBus.Property.EmitsChangedSignal' value='const'/>
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</property>
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<method name='StartSearch'>
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<annotation name='org.freedesktop.DBus.Method.NoReply' value='true'/>
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</method>
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<method name='StopSearch'>
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<annotation name='org.freedesktop.DBus.Method.NoReply' value='true'/>
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</method>
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<signal name='SearchStopped'>
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<arg name='status' type='i' />
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</signal>
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<signal name='UnregisteredDevice'>
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<arg name='info' type='o' />
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</signal>
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</interface>
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<interface name='org.freedesktop.tuhi1.Device'>
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<property type='o' name='BlueZDevice' access='read'/>
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<property type='uu' name='Dimensions' access='read'/>
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<property type='b' name='Listening' access='read'>
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<annotation name='org.freedesktop.DBus.Property.EmitsChangedSignal' value='true'/>
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</property>
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<property type='b' name='Live' access='read'>
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<annotation name='org.freedesktop.DBus.Property.EmitsChangedSignal' value='true'/>
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</property>
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<property type='u' name='BatteryPercent' access='read'>
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<annotation name='org.freedesktop.DBus.Property.EmitsChangedSignal' value='true'/>
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</property>
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<property type='b' name='BatteryState' access='read'>
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<annotation name='org.freedesktop.DBus.Property.EmitsChangedSignal' value='true'/>
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</property>
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<property type='at' name='DrawingsAvailable' access='read'>
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<annotation name='org.freedesktop.DBus.Property.EmitsChangedSignal' value='true'/>
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</property>
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<method name='Register'>
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<arg name='result' type='i' direction='out'/>
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</method>
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<method name='StartListening'>
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<annotation name='org.freedesktop.DBus.Method.NoReply' value='true'/>
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</method>
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<method name='StopListening'>
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<annotation name='org.freedesktop.DBus.Method.NoReply' value='true'/>
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</method>
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<method name='StartLive'>
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<arg name='uhid_fd' type='h' />
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<arg name='result' type='i' direction='out'/>
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</method>
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<method name='StopLive'>
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<annotation name='org.freedesktop.DBus.Method.NoReply' value='true'/>
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</method>
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<method name='GetJSONData'>
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<arg name='file_version' type='u' direction='in'/>
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<arg name='timestamp' type='t' direction='in'/>
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<arg name='json' type='s' direction='out'/>
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</method>
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<signal name='ButtonPressRequired' />
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<signal name='ListeningStopped'>
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<arg name='status' type='i' />
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</signal>
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<signal name='LiveStopped'>
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<arg name='status' type='i' />
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</signal>
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<signal name='SyncState'>
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<arg name='status' type='i' />
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</signal>
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</interface>
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</node>
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'''
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BASE_PATH = '/org/freedesktop/tuhi1'
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BUS_NAME = 'org.freedesktop.tuhi1'
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INTF_MANAGER = 'org.freedesktop.tuhi1.Manager'
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INTF_DEVICE = 'org.freedesktop.tuhi1.Device'
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class _TuhiDBus(GObject.Object):
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def __init__(self, connection, objpath, interface):
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GObject.Object.__init__(self)
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self.connection = connection
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self.objpath = objpath
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self.interface = interface
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def properties_changed(self, props, dest=None):
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'''
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Send a PropertiesChanged signal to the given destination (if any).
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The props argument is a { name: value } dictionary of the
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property values, the values are GVariant.bool, etc.
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'''
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builder = GLib.VariantBuilder(GLib.VariantType('a{sv}'))
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for name, value in props.items():
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de = GLib.Variant.new_dict_entry(GLib.Variant.new_string(name),
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GLib.Variant.new_variant(value))
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builder.add_value(de)
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properties = builder.end()
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inval_props = GLib.VariantBuilder(GLib.VariantType('as'))
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inval_props = inval_props.end()
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self.connection.emit_signal(dest, self.objpath,
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'org.freedesktop.DBus.Properties',
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'PropertiesChanged',
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GLib.Variant.new_tuple(
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GLib.Variant.new_string(self.interface),
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properties,
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inval_props))
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def signal(self, name, arg=None, dest=None):
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if arg is not None:
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arg = GLib.Variant.new_tuple(arg)
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self.connection.emit_signal(dest, self.objpath, self.interface, name, arg)
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class TuhiDBusDevice(_TuhiDBus):
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'''
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Class representing a DBus object for a Tuhi device. This class only
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handles the DBus bits, communication with the device is done elsewhere.
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'''
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__gsignals__ = {
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'register-requested':
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(GObject.SignalFlags.RUN_FIRST, None, ()),
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}
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def __init__(self, device, connection):
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objpath = device.address.replace(':', '_')
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objpath = f'{BASE_PATH}/{objpath}'
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_TuhiDBus.__init__(self, connection, objpath, INTF_DEVICE)
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self.bluez_device_objpath = device.bluez_device.objpath
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self.name = device.name
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self.width, self.height = device.dimensions
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self.drawings = {}
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self.registered = device.registered
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self._listening = False
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self._listening_client = None
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self._live = False
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self._uhid_fd = None
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self._live_client = None
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self._dbusid = self._register_object(connection)
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self._battery_percent = 0
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self._battery_state = device.battery_state
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device.connect('notify::registered', self._on_device_registered)
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device.connect('notify::battery-percent', self._on_battery_percent)
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device.connect('notify::battery-state', self._on_battery_state)
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device.connect('device-error', self._on_device_error)
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device.connect('notify::sync-state', self._on_sync_state)
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device.connect('notify::dimensions', self._on_dimensions)
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@GObject.Property
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def listening(self):
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return self._listening
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@listening.setter
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def listening(self, value):
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if self._listening == value:
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return
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self._listening = value
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self.properties_changed({'Listening': GLib.Variant.new_boolean(value)})
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@GObject.Property
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def live(self):
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return self._live
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@live.setter
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def live(self, value):
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if self._live == value:
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return
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self._live = value
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self.properties_changed({'Live': GLib.Variant.new_boolean(value)})
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@GObject.Property
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def uhid_fd(self):
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return self._uhid_fd
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@GObject.Property
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def registered(self):
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return self._registered
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@registered.setter
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def registered(self, registered):
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self._registered = registered
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@GObject.Property
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def battery_percent(self):
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return self._battery_percent
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@battery_percent.setter
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def battery_percent(self, value):
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if self._battery_percent == value:
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return
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self._battery_percent = value
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self.properties_changed({'BatteryPercent': GLib.Variant.new_uint32(value)})
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@GObject.Property
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def battery_state(self):
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return self._battery_state
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@battery_state.setter
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def battery_state(self, value):
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if self._battery_state == value:
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return
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self._battery_state = value
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self.properties_changed({'BatteryState': GLib.Variant.new_uint32(value.value)})
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def remove(self):
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self.connection.unregister_object(self._dbusid)
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self._dbusid = None
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def _register_object(self, connection):
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introspection = Gio.DBusNodeInfo.new_for_xml(INTROSPECTION_XML)
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intf = introspection.lookup_interface(self.interface)
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return connection.register_object(self.objpath,
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intf,
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self._method_cb,
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self._property_read_cb,
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self._property_write_cb)
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def _method_cb(self, connection, sender, objpath, interface, methodname, args, invocation):
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if interface != self.interface:
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return None
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if methodname == 'Register':
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# FIXME: we should cache the method invocation here, wait for a
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# successful result from Tuhi and then return the value
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self._register()
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result = GLib.Variant.new_int32(0)
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invocation.return_value(GLib.Variant.new_tuple(result))
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elif methodname == 'StartListening':
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self._start_listening(connection, sender)
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invocation.return_value()
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elif methodname == 'StopListening':
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self._stop_listening(connection, sender)
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invocation.return_value()
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elif methodname == 'StartLive':
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self._start_live(connection, sender, args, invocation)
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elif methodname == 'StopLive':
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self._stop_live(connection, sender)
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invocation.return_value()
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elif methodname == 'GetJSONData':
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json = GLib.Variant.new_string(self._json_data(args))
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invocation.return_value(GLib.Variant.new_tuple(json))
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def _property_read_cb(self, connection, sender, objpath, interface, propname):
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if interface != INTF_DEVICE:
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return None
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if propname == 'BlueZDevice':
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return GLib.Variant.new_object_path(self.bluez_device_objpath)
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elif propname == 'Dimensions':
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w = GLib.Variant.new_uint32(self.width)
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h = GLib.Variant.new_uint32(self.height)
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return GLib.Variant.new_tuple(w, h)
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elif propname == 'DrawingsAvailable':
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ts = GLib.Variant.new_array(GLib.VariantType('t'),
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[GLib.Variant.new_uint64(t)
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for t in self.drawings.keys()])
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return ts
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elif propname == 'Listening':
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return GLib.Variant.new_boolean(self.listening)
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elif propname == 'Live':
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return GLib.Variant.new_boolean(self.live)
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elif propname == 'BatteryPercent':
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return GLib.Variant.new_uint32(self.battery_percent)
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elif propname == 'BatteryState':
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return GLib.Variant.new_uint32(self.battery_state.value)
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return None
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def _property_write_cb(self):
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pass
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def _register(self):
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self.emit('register-requested')
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def _on_device_registered(self, device, pspec):
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if self.registered == device.registered:
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return
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self.registered = device.registered
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def _on_battery_percent(self, device, pspec):
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self.battery_percent = device.battery_percent
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def _on_battery_state(self, device, pspec):
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self.battery_state = device.battery_state
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def _on_device_error(self, device, exception):
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logger.info('An error occured while synching the device')
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if self.listening:
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self._stop_listening(self.connection, self._listening_client[0],
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-exception.errno)
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def _on_dimensions(self, device, pspec):
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self.width, self.height = device.dimensions
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w = GLib.Variant.new_uint32(self.width)
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h = GLib.Variant.new_uint32(self.height)
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self.properties_changed({'Dimensions': GLib.Variant.new_tuple(w, h)})
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def _on_sync_state(self, device, pspec):
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if self._listening_client is None:
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return
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dest = self._listening_client[0]
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status = GLib.Variant.new_int32(device.sync_state)
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self.signal('SyncState', status, dest=dest)
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def _start_listening(self, connection, sender):
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if self.listening:
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logger.debug(f'{self} - already listening')
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# silently ignore it for the current client but send EBUSY to
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# other clients
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if sender != self._listening_client[0]:
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status = GLib.Variant.new_int32(-errno.EBUSY)
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self.signal('ListeningStopped', status, dest=sender)
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return
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s = connection.signal_subscribe(sender='org.freedesktop.DBus',
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interface_name='org.freedesktop.DBus',
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member='NameOwnerChanged',
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object_path='/org/freedesktop/DBus',
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arg0=None,
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flags=Gio.DBusSignalFlags.NONE,
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callback=self._on_name_owner_changed_signal_cb,
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user_data=sender)
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self._listening_client = (sender, s)
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logger.debug(f'Listening started on {self.name} for {sender}')
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self.listening = True
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self.notify('listening')
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def _on_name_owner_changed_signal_cb(self, connection, sender, object_path,
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interface_name, node,
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out_user_data, user_data):
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name, old_owner, new_owner = out_user_data
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if name != user_data:
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return
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self._stop_listening(connection, user_data)
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self._stop_live(connection, user_data)
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def _stop_listening(self, connection, sender, errno=0):
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if not self.listening or sender != self._listening_client[0]:
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return
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connection.signal_unsubscribe(self._listening_client[1])
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self._listening_client = None
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logger.debug(f'Listening stopped on {self.name} for {sender}')
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self.notify('listening')
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status = GLib.Variant.new_int32(errno)
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self.signal('ListeningStopped', status, dest=sender)
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self.listening = False
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self.notify('listening')
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def _start_live(self, connection, sender, args, invocation):
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if self.live:
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logger.debug(f'{self} - already in live mode')
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# silently ignore it for the current client but send EBUSY to
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# other clients
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if sender != self._listening_client[0]:
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status = GLib.Variant.new_int32(-errno.EBUSY)
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self.signal('LiveStopped', status, dest=sender)
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return
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s = connection.signal_subscribe(sender='org.freedesktop.DBus',
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interface_name='org.freedesktop.DBus',
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member='NameOwnerChanged',
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object_path='/org/freedesktop/DBus',
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arg0=None,
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flags=Gio.DBusSignalFlags.NONE,
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callback=self._on_name_owner_changed_signal_cb,
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user_data=sender)
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self._live_client = (sender, s)
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logger.debug(f'Live mode started on {self.name} for {sender}')
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message = invocation.get_message()
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fds_list = message.get_unix_fd_list()
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if fds_list is None or fds_list.get_length() != 1:
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logger.error(f'uhid fds not provided')
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result = GLib.Variant.new_int32(-errno.EINVAL)
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invocation.return_value(GLib.Variant.new_tuple(result))
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return
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fds_list = fds_list.steal_fds()
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self._uhid_fd = fds_list[0]
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self.live = True
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result = GLib.Variant.new_int32(0)
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invocation.return_value(GLib.Variant.new_tuple(result))
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def _stop_live(self, connection, sender, errno=0):
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if not self.live or sender != self._live_client[0]:
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return
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connection.signal_unsubscribe(self._live_client[1])
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self._live_client = None
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logger.debug(f'Live mode stopped on {self.name} for {sender}')
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status = GLib.Variant.new_int32(errno)
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self.signal('LiveStopped', status, dest=sender)
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self.live = False
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def _json_data(self, args):
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file_format = args[0]
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if file_format != Drawing.JSON_FILE_FORMAT_VERSION:
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logger.info(f'Unsupported file format requested: {file_format}')
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return ''
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index = args[1]
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try:
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drawing = self.drawings[index]
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except KeyError:
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return ''
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else:
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return drawing.to_json()
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def add_drawing(self, drawing):
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self.drawings[drawing.timestamp] = drawing
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ts = GLib.Variant.new_array(GLib.VariantType('t'),
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[GLib.Variant.new_uint64(t)
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for t in self.drawings.keys()])
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self.properties_changed({'DrawingsAvailable': ts})
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def notify_button_press_required(self):
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logger.debug('Sending ButtonPressRequired signal')
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self.signal('ButtonPressRequired')
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def __repr__(self):
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return f'{self.objpath} - {self.name}'
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class TuhiDBusServer(_TuhiDBus):
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'''
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Class for the DBus server.
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'''
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__gsignals__ = {
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'bus-name-acquired':
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(GObject.SignalFlags.RUN_FIRST, None, ()),
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'bus-name-lost':
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(GObject.SignalFlags.RUN_FIRST, None, ()),
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# Signal arguments:
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# search_stop_handler(status)
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# to be called when the search process has terminated, with
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# an integer status code (0 == success, negative errno)
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'search-start-requested':
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(GObject.SignalFlags.RUN_FIRST, None, (GObject.TYPE_PYOBJECT,)),
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'search-stop-requested':
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(GObject.SignalFlags.RUN_FIRST, None, ()),
|
|
}
|
|
|
|
def __init__(self):
|
|
_TuhiDBus.__init__(self, None, BASE_PATH, INTF_MANAGER)
|
|
self._devices = []
|
|
self._unregistered_devices = {}
|
|
self._dbus = Gio.bus_own_name(Gio.BusType.SESSION,
|
|
BUS_NAME,
|
|
Gio.BusNameOwnerFlags.NONE,
|
|
self._bus_aquired,
|
|
self._bus_name_aquired,
|
|
self._bus_name_lost)
|
|
self._is_searching = False
|
|
self._searching_client = None
|
|
|
|
@GObject.Property
|
|
def is_searching(self):
|
|
return self._is_searching
|
|
|
|
@is_searching.setter
|
|
def is_searching(self, value):
|
|
if self._is_searching == value:
|
|
return
|
|
|
|
self._is_searching = value
|
|
self.properties_changed({'Searching': GLib.Variant.new_boolean(value)})
|
|
|
|
def _bus_aquired(self, connection, name):
|
|
introspection = Gio.DBusNodeInfo.new_for_xml(INTROSPECTION_XML)
|
|
intf = introspection.lookup_interface(self.interface)
|
|
self.connection = connection
|
|
Gio.DBusConnection.register_object(connection,
|
|
self.objpath,
|
|
intf,
|
|
self._method_cb,
|
|
self._property_read_cb,
|
|
self._property_write_cb)
|
|
|
|
def _bus_name_aquired(self, connection, name):
|
|
logger.debug('Bus name aquired')
|
|
self.emit('bus-name-acquired')
|
|
|
|
def _bus_name_lost(self, connection, name):
|
|
logger.error('Bus not available, is there another Tuhi process running?')
|
|
self.emit('bus-name-lost')
|
|
|
|
def _method_cb(self, connection, sender, objpath, interface, methodname, args, invocation):
|
|
if interface != self.interface:
|
|
return None
|
|
|
|
if methodname == 'StartSearch':
|
|
self._start_search(connection, sender)
|
|
invocation.return_value()
|
|
elif methodname == 'StopSearch':
|
|
self._stop_search(connection, sender)
|
|
invocation.return_value()
|
|
|
|
def _property_read_cb(self, connection, sender, objpath, interface, propname):
|
|
if interface != self.interface:
|
|
return None
|
|
|
|
if propname == 'Devices':
|
|
return GLib.Variant.new_objv([d.objpath for d in self._devices if d.registered])
|
|
elif propname == 'Searching':
|
|
return GLib.Variant.new_boolean(self.is_searching)
|
|
elif propname == 'JSONDataVersions':
|
|
return GLib.Variant.new_array(GLib.VariantType('u'),
|
|
[GLib.Variant.new_uint32(Drawing.JSON_FILE_FORMAT_VERSION)])
|
|
|
|
return None
|
|
|
|
def _property_write_cb(self):
|
|
pass
|
|
|
|
def _start_search(self, connection, sender):
|
|
if self.is_searching:
|
|
logger.debug('Already searching')
|
|
|
|
# silently ignore it for the current client but send EBUSY to
|
|
# other clients
|
|
if sender != self._searching_client[0]:
|
|
status = GLib.Variant.new_int32(-errno.EBUSY)
|
|
self.signal('SearchStopped', status)
|
|
return
|
|
|
|
self.is_searching = True
|
|
|
|
s = connection.signal_subscribe(sender='org.freedesktop.DBus',
|
|
interface_name='org.freedesktop.DBus',
|
|
member='NameOwnerChanged',
|
|
object_path='/org/freedesktop/DBus',
|
|
arg0=None,
|
|
flags=Gio.DBusSignalFlags.NONE,
|
|
callback=self._on_name_owner_changed_signal_cb,
|
|
user_data=sender)
|
|
self._searching_client = (sender, s)
|
|
|
|
self.emit('search-start-requested', self._on_search_stop)
|
|
for d in self._devices:
|
|
if not d.registered:
|
|
self._emit_unregistered_signal(d)
|
|
|
|
def _on_name_owner_changed_signal_cb(self, connection, sender, object_path,
|
|
interface_name, node,
|
|
out_user_data, user_data):
|
|
name, old_owner, new_owner = out_user_data
|
|
if name != user_data:
|
|
return
|
|
|
|
self._stop_search(connection, user_data)
|
|
|
|
def _stop_search(self, connection, sender):
|
|
if not self.is_searching or sender != self._searching_client[0]:
|
|
return
|
|
|
|
connection.signal_unsubscribe(self._searching_client[1])
|
|
self.is_searching = False
|
|
self.emit('search-stop-requested')
|
|
|
|
def _on_search_stop(self, status):
|
|
'''
|
|
Called by whoever handles the search-start-requested signal
|
|
'''
|
|
logger.debug('Search has stopped')
|
|
self.is_searching = False
|
|
status = GLib.Variant.new_int32(status)
|
|
self.signal('SearchStopped', status, dest=self._searching_client[0])
|
|
self._searching_client = None
|
|
|
|
for dev in self._devices:
|
|
if dev.registered:
|
|
continue
|
|
|
|
dev.remove()
|
|
self._devices = [d for d in self._devices if d.registered]
|
|
|
|
def cleanup(self):
|
|
Gio.bus_unown_name(self._dbus)
|
|
|
|
def create_device(self, device):
|
|
dev = TuhiDBusDevice(device, self.connection)
|
|
dev.connect('notify::registered', self._on_device_registered)
|
|
self._devices.append(dev)
|
|
if not device.registered:
|
|
self._emit_unregistered_signal(dev)
|
|
return dev
|
|
|
|
def _on_device_registered(self, device, param):
|
|
objpaths = GLib.Variant.new_array(GLib.VariantType('o'),
|
|
[GLib.Variant.new_object_path(d.objpath)
|
|
for d in self._devices if d.registered])
|
|
self.properties_changed({'Devices': objpaths})
|
|
|
|
if not device.registered and self._is_searching:
|
|
self._emit_unregistered_signal(device)
|
|
|
|
def _emit_unregistered_signal(self, device):
|
|
arg = GLib.Variant.new_object_path(device.objpath)
|
|
self.signal('UnregisteredDevice', arg, dest=self._searching_client[0])
|