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damage.py
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182 lines (151 loc) · 5.62 KB
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# Xlib.ext.damage -- DAMAGE extension module
#
# Copyright (C) 2018 Joseph Kogut <joseph.kogut@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, structs
from Xlib.xobject import resource
from Xlib.error import XError
extname = 'DAMAGE'
# Event codes #
DamageNotifyCode = 0
# Error codes #
BadDamageCode = 0
class BadDamageError(XError):
pass
# DamageReportLevel options
DamageReportRawRectangles = 0
DamageReportDeltaRectangles = 1
DamageReportBoundingBox = 2
DamageReportNonEmpty = 3
DamageReportLevel = (
DamageReportRawRectangles,
DamageReportDeltaRectangles,
DamageReportBoundingBox,
DamageReportNonEmpty,
)
DAMAGE = rq.Card32
# Methods
class QueryVersion(rq.ReplyRequest):
_request = rq.Struct(rq.Card8('opcode'),
rq.Opcode(0),
rq.RequestLength(),
rq.Card32('major_version'),
rq.Card32('minor_version'),
)
_reply = rq.Struct(rq.ReplyCode(),
rq.Pad(1),
rq.Card16('sequence_number'),
rq.ReplyLength(),
rq.Card32('major_version'),
rq.Card32('minor_version'),
rq.Pad(16),
)
def query_version(self):
return QueryVersion(display=self.display,
opcode=self.display.get_extension_major(extname),
major_version=1,
minor_version=1)
class DamageCreate(rq.Request):
_request = rq.Struct(rq.Card8('opcode'),
rq.Opcode(1),
rq.RequestLength(),
DAMAGE('damage'),
rq.Drawable('drawable'),
rq.Set('level', 1, DamageReportLevel),
rq.Pad(3),
)
def damage_create(self, level):
did = self.display.allocate_resource_id()
DamageCreate(display=self.display,
opcode=self.display.get_extension_major(extname),
damage=did,
drawable=self.id,
level=level,
)
return did
class DamageDestroy(rq.Request):
_request = rq.Struct(rq.Card8('opcode'),
rq.Opcode(2),
rq.RequestLength(),
DAMAGE('damage')
)
def damage_destroy(self, damage):
DamageDestroy(display=self.display,
opcode=self.display.get_extension_major(extname),
damage=damage,
)
self.display.free_resource_id(damage)
class DamageSubtract(rq.Request):
_request = rq.Struct(rq.Card8('opcode'),
rq.Opcode(3),
rq.RequestLength(),
DAMAGE('damage'),
rq.Card32('repair'),
rq.Card32('parts')
)
def damage_subtract(self, damage, repair=X.NONE, parts=X.NONE):
DamageSubtract(display=self.display,
opcode=self.display.get_extension_major(extname),
damage=damage,
repair=repair,
parts=parts)
class DamageAdd(rq.Request):
_request = rq.Struct(rq.Card8('opcode'),
rq.Opcode(4),
rq.RequestLength(),
rq.Card32('repair'),
rq.Card32('parts'),
)
def damage_add(self, repair, parts):
DamageAdd(display=self.display,
opcode=self.display.get_extension_major(extname),
repair=repair,
parts=parts)
# Events #
class DamageNotify(rq.Event):
_code = None
_fields = rq.Struct(
rq.Card8('type'),
rq.Card8('level'),
rq.Card16('sequence_number'),
rq.Drawable('drawable'),
DAMAGE('damage'),
rq.Card32('timestamp'),
rq.Object('area', structs.Rectangle),
rq.Object('drawable_geometry', structs.Rectangle)
)
def init(disp, info):
disp.extension_add_method('display',
'damage_query_version',
query_version)
disp.extension_add_method('drawable',
'damage_create',
damage_create)
disp.extension_add_method('display',
'damage_destroy',
damage_destroy)
disp.extension_add_method('display',
'damage_subtract',
damage_subtract)
disp.extension_add_method('drawable',
'damage_add',
damage_add)
disp.extension_add_event(info.first_event + DamageNotifyCode, DamageNotify)
disp.add_extension_error(code=BadDamageCode, err=BadDamageError)