You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
56 lines
1.8 KiB
C++
56 lines
1.8 KiB
C++
/********************************************************************
|
|
KWin - the KDE window manager
|
|
This file is part of the KDE project.
|
|
|
|
Copyright (C) 2018 Martin Flöser <mgraesslin@kde.org>
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program 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 General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*********************************************************************/
|
|
#pragma once
|
|
|
|
#include <xcb/xcb.h>
|
|
|
|
#include <cstring>
|
|
|
|
namespace KWin
|
|
{
|
|
|
|
class GeEventMemMover
|
|
{
|
|
public:
|
|
GeEventMemMover(xcb_generic_event_t *event)
|
|
: m_event(reinterpret_cast<xcb_ge_generic_event_t *>(event))
|
|
{
|
|
// xcb event structs contain stuff that wasn't on the wire, the full_sequence field
|
|
// adds an extra 4 bytes and generic events cookie data is on the wire right after the standard 32 bytes.
|
|
// Move this data back to have the same layout in memory as it was on the wire
|
|
// and allow casting, overwriting the full_sequence field.
|
|
memmove((char*) m_event + 32, (char*) m_event + 36, m_event->length * 4);
|
|
}
|
|
~GeEventMemMover()
|
|
{
|
|
// move memory layout back, so that Qt can do the same without breaking
|
|
memmove((char*) m_event + 36, (char *) m_event + 32, m_event->length * 4);
|
|
}
|
|
|
|
xcb_ge_generic_event_t *operator->() const {
|
|
return m_event;
|
|
}
|
|
|
|
private:
|
|
xcb_ge_generic_event_t *m_event;
|
|
};
|
|
|
|
}
|