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CyberShadowvasily-v-ryabov
CyberShadow
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vasily-v-ryabov
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Add screensaver extension
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‎Xlib/ext/__init__.py‎

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('DAMAGE', 'damage'),
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('DPMS', 'dpms'),
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('X-Resource', 'res'),
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('MIT-SCREEN-SAVER', 'screensaver'),
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]
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__all__ = map(lambda x: x[1], __extensions__)

‎Xlib/ext/screensaver.py‎

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# Xlib.ext.screensaver -- X ScreenSaver extension module
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#
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# Copyright (C) 2022 Vladimir Panteleev <git@cy.md>
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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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# 51 Franklin Street,
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# Fifth Floor,
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# Boston, MA 02110-1301 USA
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"""This extension allows registering the client as an X screensaver,
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or query information about the current screensaver.
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For detailed description see any of the following documents.
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Protocol specification:
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https://www.x.org/releases/X11R7.7/doc/scrnsaverproto/saver.html
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XCB Protocol specification:
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https://cgit.freedesktop.org/xcb/proto/tree/src/screensaver.xml
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"""
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from Xlib import X
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from Xlib.protocol import rq, structs
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extname = 'MIT-SCREEN-SAVER'
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# Event members
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NotifyMask = 1
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CycleMask = 2
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# Notify state
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StateOff = 0
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StateOn = 1
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StateCycle = 2
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# Notify kind
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KindBlanked = 0
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KindInternal = 1
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KindExternal = 2
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class QueryVersion(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.Card8('major_version'),
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rq.Card8('minor_version'),
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rq.Pad(2),
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)
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_reply = rq.Struct(
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rq.ReplyCode(),
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rq.Pad(1),
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rq.Card16('sequence_number'),
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rq.ReplyLength(),
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rq.Card8('major_version'),
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rq.Card8('minor_version'),
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rq.Pad(22),
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)
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def query_version(self):
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return QueryVersion(display=self.display,
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opcode=self.display.get_extension_major(extname),
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major_version=1,
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minor_version=0)
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class QueryInfo(rq.ReplyRequest):
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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.Drawable('drawable'),
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)
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_reply = rq.Struct(
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rq.ReplyCode(),
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rq.Card8('state'),
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rq.Card16('sequence_number'),
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rq.ReplyLength(),
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rq.Window('saver_window'),
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rq.Card32('til_or_since'),
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rq.Card32('idle'),
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rq.Card32('event_mask'), # rq.Set('event_mask', 4, (NotifyMask, CycleMask)),
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rq.Card8('kind'),
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rq.Pad(10),
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)
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def query_info(self):
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return QueryInfo(display=self.display,
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opcode=self.display.get_extension_major(extname),
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drawable=self,
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)
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class SelectInput(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.Drawable('drawable'),
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rq.Card32('event_mask'), # rq.Set('event_mask', 4, (NotifyMask, CycleMask)),
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)
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def select_input(self, mask):
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return SelectInput(display=self.display,
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opcode=self.display.get_extension_major(extname),
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drawable=self,
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event_mask=mask,
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)
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class SetAttributes(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.Drawable('drawable'),
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rq.Int16('x'),
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rq.Int16('y'),
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rq.Card16('width'),
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rq.Card16('height'),
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rq.Card16('border_width'),
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rq.Set('window_class', 1, (X.CopyFromParent, X.InputOutput, X.InputOnly)),
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rq.Card8('depth'),
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rq.Card32('visual'),
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structs.WindowValues('attrs'),
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)
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def set_attributes(self, x, y, width, height, border_width,
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window_class = X.CopyFromParent,
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depth = X.CopyFromParent,
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visual = X.CopyFromParent,
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onerror = None,
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**keys):
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return SetAttributes(display=self.display,
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onerror = onerror,
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opcode=self.display.get_extension_major(extname),
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drawable=self,
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x = x,
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y = y,
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width = width,
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height = height,
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border_width = border_width,
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window_class = window_class,
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depth = depth,
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visual = visual,
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attrs = keys)
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class UnsetAttributes(rq.Request):
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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.Drawable('drawable'),
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)
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def unset_attributes(self, onerror = None):
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return UnsetAttributes(display=self.display,
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onerror = onerror,
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opcode=self.display.get_extension_major(extname),
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drawable=self)
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class Notify(rq.Event):
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_code = None
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_fields = rq.Struct(
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rq.Card8('type'),
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rq.Set('state', 1, (StateOff, StateOn, StateCycle)),
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rq.Card16('sequence_number'),
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rq.Card32('timestamp'),
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rq.Window('root'),
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rq.Window('window'),
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rq.Set('kind', 1, (KindBlanked, KindInternal, KindExternal)),
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rq.Bool('forced'),
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rq.Pad(14),
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)
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def init(disp, info):
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disp.extension_add_method('display', 'screensaver_query_version', query_version)
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disp.extension_add_method('drawable', 'screensaver_query_info', query_info)
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disp.extension_add_method('drawable', 'screensaver_select_input', select_input)
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disp.extension_add_method('drawable', 'screensaver_set_attributes', set_attributes)
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disp.extension_add_method('drawable', 'screensaver_unset_attributes', unset_attributes)
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disp.extension_add_event(info.first_event + 0, Notify)

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