kwin/keyboard_repeat.h
David Edmundson 04845b6007 [wayland] Avoid compare to unintialised value in keyboard repeat
Summary:
If we get a key event for which

if (m_xkb->shouldKeyRepeat(key) &&
waylandServer()->seat()->keyRepeatDelay() != 0) fails

m_key will be unitialised and on release we have a compare against
unitialised memory.

Won't do any harm, it'll just stop a timer that isn't running, but
valgrind complains.

0 is the value QKeyEvent uses when nativeScanCode is unknown so a safe
initial values.

Reviewers: #kwin, zzag

Reviewed By: #kwin, zzag

Subscribers: kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D23748
2019-09-23 22:13:54 +02:00

56 lines
1.4 KiB
C++

/********************************************************************
KWin - the KDE window manager
This file is part of the KDE project.
Copyright (C) 2016, 2017 Martin Gräßlin <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/>.
*********************************************************************/
#ifndef KWIN_KEYBOARD_REPEAT
#define KWIN_KEYBOARD_REPEAT
#include "input_event_spy.h"
#include <QObject>
class QTimer;
namespace KWin
{
class Xkb;
class KeyboardRepeat : public QObject, public InputEventSpy
{
Q_OBJECT
public:
explicit KeyboardRepeat(Xkb *xkb);
~KeyboardRepeat() override;
void keyEvent(KeyEvent *event) override;
Q_SIGNALS:
void keyRepeat(quint32 key, quint32 time);
private:
void handleKeyRepeat();
QTimer *m_timer;
Xkb *m_xkb;
quint32 m_time;
quint32 m_key = 0;
};
}
#endif