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record.py
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283 lines (239 loc) · 9.18 KB
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# Xlib.ext.record -- RECORD extension module
#
# Copyright (C) 2006 Alex Badea <vamposdecampos@gmail.com>
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public License
# as published by the Free Software Foundation; either version 2.1
# of the License, or (at your option) any later version.
#
# This library 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 Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the
# Free Software Foundation, Inc.,
# 59 Temple Place,
# Suite 330,
# Boston, MA 02111-1307 USA
from Xlib import X
from Xlib.protocol import rq
extname = 'RECORD'
FromServerTime = 0x01
FromClientTime = 0x02
FromClientSequence = 0x04
CurrentClients = 1
FutureClients = 2
AllClients = 3
FromServer = 0
FromClient = 1
ClientStarted = 2
ClientDied = 3
StartOfData = 4
EndOfData = 5
Record_Range8 = rq.Struct(
rq.Card8('first'),
rq.Card8('last'))
Record_Range16 = rq.Struct(
rq.Card16('first'),
rq.Card16('last'))
Record_ExtRange = rq.Struct(
rq.Card8('major_range_first'),
rq.Card8('major_range_last'),
rq.Card16('minor_range_first'),
rq.Card16('minor_range_last'))
Record_Range = rq.Struct(
rq.Object('core_requests', Record_Range8),
rq.Object('core_replies', Record_Range8),
rq.Object('ext_requests', Record_ExtRange),
rq.Object('ext_replies', Record_ExtRange),
rq.Object('delivered_events', Record_Range8),
rq.Object('device_events', Record_Range8),
rq.Object('errors', Record_Range8),
rq.Bool('client_started'),
rq.Bool('client_died'))
Record_ClientInfo = rq.Struct(
rq.Card32('client_resource'),
rq.LengthOf('ranges', 4),
rq.List('ranges', Record_Range))
class RawField(rq.ValueField):
"""A field with raw data, stored as a string"""
structcode = None
def pack_value(self, val):
return val, len(val), None
def parse_binary_value(self, data, display, length, format):
return data, ''
class GetVersion(rq.ReplyRequest):
_request = rq.Struct(
rq.Card8('opcode'),
rq.Opcode(0),
rq.RequestLength(),
rq.Card16('major_version'),
rq.Card16('minor_version'))
_reply = rq.Struct(
rq.Pad(2),
rq.Card16('sequence_number'),
rq.ReplyLength(),
rq.Card16('major_version'),
rq.Card16('minor_version'),
rq.Pad(20))
def get_version(self, major, minor):
return GetVersion(
display = self.display,
opcode = self.display.get_extension_major(extname),
major_version = major,
minor_version = minor)
class CreateContext(rq.Request):
_request = rq.Struct(
rq.Card8('opcode'),
rq.Opcode(1),
rq.RequestLength(),
rq.Card32('context'), # Record_RC
rq.Card8('element_header'), # Record_Element_Header
rq.Pad(3),
rq.LengthOf('clients', 4),
rq.LengthOf('ranges', 4),
rq.List('clients', rq.Card32Obj),
rq.List('ranges', Record_Range))
def create_context(self, datum_flags, clients, ranges):
context = self.display.allocate_resource_id()
CreateContext(
display = self.display,
opcode = self.display.get_extension_major(extname),
context = context,
element_header = datum_flags,
clients = clients,
ranges = ranges)
return context
class RegisterClients(rq.Request):
_request = rq.Struct(
rq.Card8('opcode'),
rq.Opcode(2),
rq.RequestLength(),
rq.Card32('context'), # Record_RC
rq.Card8('element_header'), # Record_Element_Header
rq.Pad(3),
rq.LengthOf('clients', 4),
rq.LengthOf('ranges', 4),
rq.List('clients', rq.Card32Obj),
rq.List('ranges', Record_Range))
def register_clients(self, context, element_header, clients, ranges):
RegisterClients(
display = self.display,
opcode = self.display.get_extension_major(extname),
context = context,
element_header = element_header,
clients = clients,
ranges = ranges)
class UnregisterClients(rq.Request):
_request = rq.Struct(
rq.Card8('opcode'),
rq.Opcode(3),
rq.RequestLength(),
rq.Card32('context'), # Record_RC
rq.LengthOf('clients', 4),
rq.List('clients', rq.Card32Obj))
def unregister_clients(self, context, clients):
UnregisterClients(
display = self.display,
opcode = self.display.get_extension_major(extname),
context = context,
clients = clients)
class GetContext(rq.ReplyRequest):
_request = rq.Struct(
rq.Card8('opcode'),
rq.Opcode(4),
rq.RequestLength(),
rq.Card32('context')) # Record_RC
_reply = rq.Struct(
rq.Pad(2),
rq.Card16('sequence_number'),
rq.ReplyLength(),
rq.Card8('element_header'), # Record_Element_Header
rq.Pad(3),
rq.LengthOf('client_info', 4),
rq.Pad(16),
rq.List('client_info', Record_ClientInfo))
def get_context(self, context):
return GetContext(
display = self.display,
opcode = self.display.get_extension_major(extname),
context = context)
class EnableContext(rq.ReplyRequest):
_request = rq.Struct(
rq.Card8('opcode'),
rq.Opcode(5),
rq.RequestLength(),
rq.Card32('context')) # Record_RC
_reply = rq.Struct(
rq.Pad(1),
rq.Card8('category'),
rq.Card16('sequence_number'),
rq.ReplyLength(),
rq.Card8('element_header'), # Record_Element_Header
rq.Bool('client_swapped'),
rq.Pad(2),
rq.Card32('id_base'), # Record_XIDBase
rq.Card32('server_time'),
rq.Card32('recorded_sequence_number'),
rq.Pad(8),
RawField('data'))
# This request receives multiple responses, so we need to keep
# ourselves in the 'sent_requests' list in order to receive them all.
# See the discussion on ListFonstsWithInfo in request.py
def __init__(self, callback, *args, **keys):
self._callback = callback
rq.ReplyRequest.__init__(self, *args, **keys)
def _parse_response(self, data):
r, d = self._reply.parse_binary(data, self._display)
self._callback(r)
if r.category == StartOfData:
# Hack ourselves a sequence number, used by the code in
# Xlib.protocol.display.Display.parse_request_response()
self.sequence_number = r.sequence_number
if r.category == EndOfData:
self._response_lock.acquire()
self._data = r
self._response_lock.release()
else:
self._display.sent_requests.insert(0, self)
def enable_context(self, context, callback):
EnableContext(
callback = callback,
display = self.display,
opcode = self.display.get_extension_major(extname),
context = context)
class DisableContext(rq.Request):
_request = rq.Struct(
rq.Card8('opcode'),
rq.Opcode(6),
rq.RequestLength(),
rq.Card32('context')) # Record_RC
def disable_context(self, context):
DisableContext(
display = self.display,
opcode = self.display.get_extension_major(extname),
context = context)
class FreeContext(rq.Request):
_request = rq.Struct(
rq.Card8('opcode'),
rq.Opcode(7),
rq.RequestLength(),
rq.Card32('context')) # Record_RC
def free_context(self, context):
FreeContext(
display = self.display,
opcode = self.display.get_extension_major(extname),
context = context)
self.display.free_resource_id(context)
def init(disp, info):
disp.extension_add_method('display', 'record_get_version', get_version)
disp.extension_add_method('display', 'record_create_context', create_context)
disp.extension_add_method('display', 'record_register_clients', register_clients)
disp.extension_add_method('display', 'record_unregister_clients', unregister_clients)
disp.extension_add_method('display', 'record_get_context', get_context)
disp.extension_add_method('display', 'record_enable_context', enable_context)
disp.extension_add_method('display', 'record_disable_context', disable_context)
disp.extension_add_method('display', 'record_free_context', free_context)