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Tony Crisci
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XFixes: add XFixesSelectionNotify events
These events can be used to tell when the owner of the clipboard selection has changed. Add an example that demonstrates usage.
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Lines changed: 138 additions & 1 deletion

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‎Xlib/ext/xfixes.py‎

Lines changed: 56 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -22,13 +22,22 @@
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'''
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A partial implementation of the XFIXES extension. Only the HideCursor and
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ShowCursor requests are provided.
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ShowCursor requests and SelectionNotify events are provided.
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'''
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from Xlib.protocol import rq
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extname = 'XFIXES'
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XFixesSelectionNotify = 0
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XFixesSetSelectionOwnerNotifyMask = (1 << 0)
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XFixesSelectionWindowDestroyNotifyMask = (1 << 1)
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XFixesSelectionClientCloseNotifyMask = (1 << 2)
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XFixesSetSelectionOwnerNotify = 0
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XFixesSelectionWindowDestroyNotify = 1
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XFixesSelectionClientCloseNotify = 2
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class QueryVersion(rq.ReplyRequest):
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_request = rq.Struct(rq.Card8('opcode'),
@@ -80,8 +89,54 @@ def show_cursor(self):
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opcode=self.display.get_extension_major(extname),
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window=self)
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class SelectSelectionInput(rq.Request):
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_request = rq.Struct(rq.Card8('opcode'),
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rq.Opcode(2),
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rq.RequestLength(),
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rq.Window('window'),
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rq.Card32('selection'),
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rq.Card32('mask')
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)
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def select_selection_input(self, window, selection, mask):
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return SelectSelectionInput(opcode=self.display.get_extension_major(extname),
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display=self.display,
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window=window,
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selection=selection,
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mask=mask)
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class SelectionNotify(rq.Event):
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_code = None
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_fields = rq.Struct(rq.Card8('type'),
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rq.Card8('sub_code'),
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rq.Card16('sequence_number'),
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rq.Window('window'),
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rq.Window('owner'),
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rq.Card32('selection'),
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rq.Card32('timestamp'),
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rq.Card32('selection_timestamp'),
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rq.Pad(8))
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class SetSelectionOwnerNotify(SelectionNotify):
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pass
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class SelectionWindowDestroyNotify(SelectionNotify):
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pass
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class SelectionClientCloseNotify(SelectionNotify):
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pass
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def init(disp, info):
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disp.extension_add_method('display', 'xfixes_select_selection_input', select_selection_input)
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disp.extension_add_method('display', 'xfixes_query_version', query_version)
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disp.extension_add_method('window', 'xfixes_hide_cursor', hide_cursor)
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disp.extension_add_method('window', 'xfixes_show_cursor', show_cursor)
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disp.extension_add_subevent(info.first_event + XFixesSelectionNotify, XFixesSetSelectionOwnerNotify, SetSelectionOwnerNotify)
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disp.extension_add_subevent(info.first_event + XFixesSelectionNotify, XFixesSelectionWindowDestroyNotify, SelectionWindowDestroyNotify)
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disp.extension_add_subevent(info.first_event + XFixesSelectionNotify, XFixesSelectionClientCloseNotify, SelectionClientCloseNotify)

‎examples/xfixes-selection-notify.py‎

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#!/usr/bin/python3
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#
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# examples/xfixes-selection-notify.py -- demonstrate the XFIXES extension
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# SelectionNotify event.
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#
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# Copyright (C) 2019
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# Tony Crisci <tony@dubstepdish.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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# Python 2/3 compatibility.
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from __future__ import print_function
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import sys
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import os
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import time
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# Change path so we find Xlib
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sys.path.append(os.path.join(os.path.dirname(__file__), '..'))
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from Xlib.display import Display
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from Xlib.ext import xfixes
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def main(argv):
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if len(sys.argv) < 2 or len(sys.argv) > 3:
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sys.exit('usage: {0} SELECTION\n\n'
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'SELECTION is typically PRIMARY, SECONDARY or CLIPBOARD.\n'
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.format(sys.argv[0]))
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display = Display()
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sel_name = sys.argv[1]
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sel_atom = display.get_atom(sel_name)
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if not display.has_extension('XFIXES'):
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if display.query_extension('XFIXES') is None:
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print('XFIXES extension not supported', file=sys.stderr)
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return 1
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xfixes_version = display.xfixes_query_version()
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print('Found XFIXES version %s.%s' % (
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xfixes_version.major_version,
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xfixes_version.minor_version,
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), file=sys.stderr)
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screen = display.screen()
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mask = xfixes.XFixesSetSelectionOwnerNotifyMask | \
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xfixes.XFixesSelectionWindowDestroyNotifyMask | \
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xfixes.XFixesSelectionClientCloseNotifyMask
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display.xfixes_select_selection_input(screen.root, sel_atom, mask)
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while True:
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e = display.next_event()
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print(e)
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if (e.type, e.sub_code) == display.extension_event.SetSelectionOwnerNotify:
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print('SetSelectionOwner: owner=0x{0:08x}'.format(e.owner.id))
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elif (e.type, e.sub_code) == display.extension_event.SelectionWindowDestroyNotify:
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print('SelectionWindowDestroy: owner=0x{0:08x}'.format(e.owner.id))
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elif (e.type, e.sub_code) == display.extension_event.SelectionClientCloseNotify:
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print('SelectionClientClose: owner=0x{0:08x}'.format(e.owner.id))
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if __name__ == '__main__':
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sys.exit(main(sys.argv))

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