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#ifndef QGESTURERECOGNIZER_H
#define QGESTURERECOGNIZER_H

#include "qevent.h"
#include "qlist.h"
#include "qset.h"

QT_BEGIN_NAMESPACE

class QGesture;
class QGestureRecognizerPrivate;
class Q_GUI_EXPORT QGestureRecognizer : public QObject
{
    Q_OBJECT
    Q_DECLARE_PRIVATE(QGestureRecognizer)

public:
    enum Result
    {
        Ignore,
        NotGesture,
        GestureStarted, //TODO: rename to just Gesture?
        GestureFinished,
        MaybeGesture
    };

    explicit QGestureRecognizer(const QString &gestureType, QObject *parent = 0);

    QString gestureType() const;

    virtual QGestureRecognizer::Result filterEvent(const QEvent* event) = 0;
    virtual QGesture* getGesture() = 0;
    virtual void reset() = 0;

signals:
    void stateChanged(QGestureRecognizer::Result result);

private:
    friend class QDoubleTapGestureRecognizer;
    friend class QTapAndHoldGestureRecognizer;
    friend class QGestureRecognizerPan;
};

QT_END_NAMESPACE

#endif // QGESTURERECOGNIZER_P_H