qqnxbuttoneventnotifier.h

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// Copyright (C) 2012 Research In Motion
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
#ifndef QQNXBUTTONSEVENTNOTIFIER_H
#define QQNXBUTTONSEVENTNOTIFIER_H
 
#include <QObject>
 
QT_BEGIN_NAMESPACE
 
class QSocketNotifier;
 
class QQnxButtonEventNotifier : public QObject
{
    Q_OBJECT
    Q_ENUMS(ButtonId)
public:
    enum ButtonId {
        bid_minus = 0,
        bid_playpause,
        bid_plus,
        bid_power,
        ButtonCount
    };
 
    enum ButtonState {
        ButtonUp,
        ButtonDown
    };
 
    explicit QQnxButtonEventNotifier(QObject *parent = nullptr);
    ~QQnxButtonEventNotifier();
 
public Q_SLOTS:
    void start();
 
private Q_SLOTS:
    void updateButtonStates();
 
private:
    void close();
    bool parsePPS(const QByteArray &ppsData, QHash<QByteArray, QByteArray> *messageFields) const;
 
    int m_fd;
    QSocketNotifier *m_readNotifier;
    ButtonState m_state[ButtonCount];
    QList<QByteArray> m_buttonKeys;
 
    static const char *ppsPath;
    static const size_t ppsBufferSize;
};
 
QT_END_NAMESPACE
 
#endif // QQNXBUTTONSEVENTNOTIFIER_H