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Example tool for owning a selection (very stupid)
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examples/selection.py renamed to examples/get_selection.py

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#!/usr/bin/env python
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#
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# examples/selection.py -- demonstrate using selections (clipboard)
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# examples/get_selection.py -- demonstrate getting selections
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# (equivalent to pasting from the clipboard)
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#
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# Copyright (C) 2013 Peter Liljenberg <peter.liljenberg@gmail.com>
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#
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# Create ourselves a window and a property for the returned data
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w = d.screen().root.create_window(
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0, 0, 10, 10, 0, X.CopyFromParent)
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w.set_wm_name(os.path.basename(sys.argv[0]))
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data_atom = d.get_atom('SEL_DATA')
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# The data_atom should not be set according to ICCCM, and since

‎examples/put_selection.py‎

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#!/usr/bin/env python
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#
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# examples/put_selection.py -- demonstrate putting selections
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# (equivalent to copying to the clipboard)
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#
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# Copyright (C) 2013 Peter Liljenberg <peter.liljenberg@gmail.com>
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program 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. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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import sys
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import os
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# Change path so we find Xlib
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sys.path.insert(1, os.path.join(sys.path[0], '..'))
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from Xlib import X, display, Xutil, Xatom
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from Xlib.protocol import event
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# This script does not implement fancy stuff like INCR or MULTIPLE, so
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# put a hard limit on the amount of data we allow sending this way
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MAX_SIZE = 50000
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def log(msg, *args):
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sys.stderr.write(msg.format(*args) + '\n')
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def error(msg, *args):
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log(msg, *args)
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sys.exit(1)
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def main():
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if len(sys.argv) < 3 or len(sys.argv) > 4:
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sys.exit('usage: {0} SELECTION TYPE [FILE]\n\n'
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'SELECTION is typically PRIMARY, SECONDARY or CLIPBOARD.\n'
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'If FILE is omitted, stdin is read.\n'
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.format(sys.argv[0]))
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if len(sys.argv) > 3:
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f = open(sys.argv[3], 'rb')
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else:
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f = sys.stdin
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# Limit selection size to avoid implementing INCR
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data = f.read(MAX_SIZE)
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f.close()
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if len(data) >= MAX_SIZE:
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log('too much data: {0} bytes, max is {1} bytes', len(data), MAX_SIZE)
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error('INCR support not implemented to put larger files')
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d = display.Display()
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sel_name = sys.argv[1]
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sel_atom = d.get_atom(sel_name)
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type_name = sys.argv[2]
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type_atom = d.get_atom(type_name)
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targets_atom = d.get_atom('TARGETS')
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# We must have a window to own a selection
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w = d.screen().root.create_window(
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0, 0, 10, 10, 0, X.CopyFromParent)
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# And to grab the selection we must have a timestamp, get one with
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# a property notify when we're anyway setting wm_name
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w.change_attributes(event_mask = X.PropertyChangeMask)
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w.set_wm_name(os.path.basename(sys.argv[0]))
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e = d.next_event()
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sel_time = e.time
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w.change_attributes(event_mask = 0)
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# Grab the selection and make sure we actually got it
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w.set_selection_owner(sel_atom, sel_time)
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if d.get_selection_owner(sel_atom) != w:
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log('could not take ownership of {0}', sel_name)
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return
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log('took ownership of selection {0}', sel_name)
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# The event loop, waiting for and processing requests
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while True:
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e = d.next_event()
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if (e.type == X.SelectionRequest
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and e.owner == w
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and e.selection == sel_atom):
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client = e.requestor
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if e.property == X.NONE:
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log('request from obsolete client!')
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client_prop = e.target # per ICCCM recommendation
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else:
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client_prop = e.property
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target_name = d.get_atom_name(e.target)
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log('got request for {0}, dest {1} on 0x{2:08x} {3}',
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target_name, d.get_atom_name(client_prop),
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client.id, client.get_wm_name())
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# Is the client asking for which types we support?
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if e.target == targets_atom:
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# Then respond with TARGETS and the type
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prop_value = [targets_atom, type_atom]
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prop_type = Xatom.ATOM
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prop_format = 32
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# Request for the offered type
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elif e.target == type_atom:
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prop_value = data
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prop_type = type_atom
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prop_format = 8
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# Something else, tell client they can't get it
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else:
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log('refusing conversion to {0}', target_name)
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client_prop = X.NONE
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# Put the data on the dest window, if possible
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if client_prop != X.NONE:
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client.change_property(
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client_prop, prop_type, prop_format, prop_value)
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# And always send a selection notification
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ev = event.SelectionNotify(
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time = e.time,
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requestor = e.requestor,
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selection = e.selection,
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target = e.target,
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property = client_prop)
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client.send_event(ev)
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# Done!
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elif (e.type == X.SelectionClear
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and e.window == w
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and e.atom == sel_atom):
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log('lost ownership of selection {0}', sel_name)
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return
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# A proper owner would also look for PropertyNotify here on
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# the selector's windows to implement INCR and waiting for
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# acknowledgement that the client has finished copying.
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if __name__ == '__main__':
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main()

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