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283 lines
9.2 KiB
283 lines
9.2 KiB
# Xlib.ext.record -- RECORD extension module
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#
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# Copyright (C) 2006 Alex Badea <vamposdecampos@gmail.com>
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#
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# This library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public License
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# as published by the Free Software Foundation; either version 2.1
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# of the License, or (at your option) any later version.
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#
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# This library 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.
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# See the GNU Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public
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# License along with this library; if not, write to the
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# Free Software Foundation, Inc.,
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# 59 Temple Place,
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# Suite 330,
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# Boston, MA 02111-1307 USA
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from Xlib import X
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from Xlib.protocol import rq
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extname = 'RECORD'
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FromServerTime = 0x01
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FromClientTime = 0x02
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FromClientSequence = 0x04
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CurrentClients = 1
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FutureClients = 2
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AllClients = 3
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FromServer = 0
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FromClient = 1
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ClientStarted = 2
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ClientDied = 3
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StartOfData = 4
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EndOfData = 5
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Record_Range8 = rq.Struct(
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rq.Card8('first'),
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rq.Card8('last'))
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Record_Range16 = rq.Struct(
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rq.Card16('first'),
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rq.Card16('last'))
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Record_ExtRange = rq.Struct(
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rq.Card8('major_range_first'),
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rq.Card8('major_range_last'),
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rq.Card16('minor_range_first'),
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rq.Card16('minor_range_last'))
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Record_Range = rq.Struct(
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rq.Object('core_requests', Record_Range8),
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rq.Object('core_replies', Record_Range8),
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rq.Object('ext_requests', Record_ExtRange),
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rq.Object('ext_replies', Record_ExtRange),
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rq.Object('delivered_events', Record_Range8),
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rq.Object('device_events', Record_Range8),
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rq.Object('errors', Record_Range8),
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rq.Bool('client_started'),
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rq.Bool('client_died'))
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Record_ClientInfo = rq.Struct(
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rq.Card32('client_resource'),
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rq.LengthOf('ranges', 4),
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rq.List('ranges', Record_Range))
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class RawField(rq.ValueField):
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"""A field with raw data, stored as a string"""
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structcode = None
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def pack_value(self, val):
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return val, len(val), None
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def parse_binary_value(self, data, display, length, format):
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return data, ''
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class GetVersion(rq.ReplyRequest):
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_request = rq.Struct(
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rq.Card8('opcode'),
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rq.Opcode(0),
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rq.RequestLength(),
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rq.Card16('major_version'),
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rq.Card16('minor_version'))
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_reply = rq.Struct(
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rq.Pad(2),
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rq.Card16('sequence_number'),
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rq.ReplyLength(),
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rq.Card16('major_version'),
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rq.Card16('minor_version'),
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rq.Pad(20))
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def get_version(self, major, minor):
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return GetVersion(
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display = self.display,
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opcode = self.display.get_extension_major(extname),
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major_version = major,
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minor_version = minor)
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class CreateContext(rq.Request):
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_request = rq.Struct(
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rq.Card8('opcode'),
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rq.Opcode(1),
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rq.RequestLength(),
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rq.Card32('context'), # Record_RC
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rq.Card8('element_header'), # Record_Element_Header
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rq.Pad(3),
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rq.LengthOf('clients', 4),
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rq.LengthOf('ranges', 4),
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rq.List('clients', rq.Card32Obj),
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rq.List('ranges', Record_Range))
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def create_context(self, datum_flags, clients, ranges):
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context = self.display.allocate_resource_id()
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CreateContext(
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display = self.display,
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opcode = self.display.get_extension_major(extname),
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context = context,
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element_header = datum_flags,
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clients = clients,
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ranges = ranges)
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return context
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class RegisterClients(rq.Request):
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_request = rq.Struct(
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rq.Card8('opcode'),
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rq.Opcode(2),
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rq.RequestLength(),
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rq.Card32('context'), # Record_RC
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rq.Card8('element_header'), # Record_Element_Header
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rq.Pad(3),
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rq.LengthOf('clients', 4),
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rq.LengthOf('ranges', 4),
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rq.List('clients', rq.Card32Obj),
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rq.List('ranges', Record_Range))
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def register_clients(self, context, element_header, clients, ranges):
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RegisterClients(
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display = self.display,
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opcode = self.display.get_extension_major(extname),
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context = context,
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element_header = element_header,
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clients = clients,
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ranges = ranges)
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class UnregisterClients(rq.Request):
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_request = rq.Struct(
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rq.Card8('opcode'),
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rq.Opcode(3),
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rq.RequestLength(),
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rq.Card32('context'), # Record_RC
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rq.LengthOf('clients', 4),
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rq.List('clients', rq.Card32Obj))
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def unregister_clients(self, context, clients):
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UnregisterClients(
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display = self.display,
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opcode = self.display.get_extension_major(extname),
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context = context,
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clients = clients)
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class GetContext(rq.ReplyRequest):
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_request = rq.Struct(
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rq.Card8('opcode'),
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rq.Opcode(4),
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rq.RequestLength(),
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rq.Card32('context')) # Record_RC
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_reply = rq.Struct(
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rq.Pad(2),
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rq.Card16('sequence_number'),
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rq.ReplyLength(),
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rq.Card8('element_header'), # Record_Element_Header
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rq.Pad(3),
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rq.LengthOf('client_info', 4),
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rq.Pad(16),
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rq.List('client_info', Record_ClientInfo))
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def get_context(self, context):
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return GetContext(
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display = self.display,
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opcode = self.display.get_extension_major(extname),
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context = context)
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class EnableContext(rq.ReplyRequest):
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_request = rq.Struct(
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rq.Card8('opcode'),
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rq.Opcode(5),
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rq.RequestLength(),
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rq.Card32('context')) # Record_RC
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_reply = rq.Struct(
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rq.Pad(1),
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rq.Card8('category'),
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rq.Card16('sequence_number'),
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rq.ReplyLength(),
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rq.Card8('element_header'), # Record_Element_Header
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rq.Bool('client_swapped'),
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rq.Pad(2),
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rq.Card32('id_base'), # Record_XIDBase
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rq.Card32('server_time'),
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rq.Card32('recorded_sequence_number'),
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rq.Pad(8),
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RawField('data'))
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# This request receives multiple responses, so we need to keep
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# ourselves in the 'sent_requests' list in order to receive them all.
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# See the discussion on ListFonstsWithInfo in request.py
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def __init__(self, callback, *args, **keys):
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self._callback = callback
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rq.ReplyRequest.__init__(self, *args, **keys)
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def _parse_response(self, data):
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r, d = self._reply.parse_binary(data, self._display)
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self._callback(r)
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if r.category == StartOfData:
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# Hack ourselves a sequence number, used by the code in
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# Xlib.protocol.display.Display.parse_request_response()
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self.sequence_number = r.sequence_number
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if r.category == EndOfData:
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self._response_lock.acquire()
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self._data = r
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self._response_lock.release()
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else:
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self._display.sent_requests.insert(0, self)
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def enable_context(self, context, callback):
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EnableContext(
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callback = callback,
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display = self.display,
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opcode = self.display.get_extension_major(extname),
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context = context)
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class DisableContext(rq.Request):
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_request = rq.Struct(
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rq.Card8('opcode'),
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rq.Opcode(6),
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rq.RequestLength(),
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rq.Card32('context')) # Record_RC
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def disable_context(self, context):
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DisableContext(
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display = self.display,
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opcode = self.display.get_extension_major(extname),
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context = context)
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class FreeContext(rq.Request):
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_request = rq.Struct(
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rq.Card8('opcode'),
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rq.Opcode(7),
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rq.RequestLength(),
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rq.Card32('context')) # Record_RC
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def free_context(self, context):
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FreeContext(
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display = self.display,
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opcode = self.display.get_extension_major(extname),
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context = context)
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self.display.free_resource_id(context)
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def init(disp, info):
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disp.extension_add_method('display', 'record_get_version', get_version)
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disp.extension_add_method('display', 'record_create_context', create_context)
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disp.extension_add_method('display', 'record_register_clients', register_clients)
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disp.extension_add_method('display', 'record_unregister_clients', unregister_clients)
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disp.extension_add_method('display', 'record_get_context', get_context)
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disp.extension_add_method('display', 'record_enable_context', enable_context)
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disp.extension_add_method('display', 'record_disable_context', disable_context)
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disp.extension_add_method('display', 'record_free_context', free_context)
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