kwin/plugins/platforms/x11/common/ge_event_mem_mover.h
Vlad Zagorodniy c7639fd7ed Port away from deprecated headers
Summary: Headers like stdio.h are deprecated in C++.

Test Plan:
Compiles.

clangd no longer spews these warnings

{F6997789, size=full}

Reviewers: #kwin, davidedmundson

Reviewed By: #kwin, davidedmundson

Subscribers: kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D22351
2019-07-09 23:59:07 +03:00

55 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;
};
}