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/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtWidgets module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia.  For licensing terms and
** conditions see http://qt.digia.com/licensing.  For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights.  These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef QGESTURERECOGNIZER_H
#define QGESTURERECOGNIZER_H

#include <QtCore/qglobal.h>
#include <QtCore/qnamespace.h>

#ifndef QT_NO_GESTURES

QT_BEGIN_NAMESPACE


class QObject;
class QEvent;
class QGesture;
class Q_WIDGETS_EXPORT QGestureRecognizer
{
public:
    enum ResultFlag
    {
        Ignore           = 0x0001,

        MayBeGesture     = 0x0002,
        TriggerGesture   = 0x0004,
        FinishGesture    = 0x0008,
        CancelGesture    = 0x0010,

        ResultState_Mask = 0x00ff,

        ConsumeEventHint        = 0x0100,
        // StoreEventHint          = 0x0200,
        // ReplayStoredEventsHint  = 0x0400,
        // DiscardStoredEventsHint = 0x0800,

        ResultHint_Mask = 0xff00
    };
    Q_DECLARE_FLAGS(Result, ResultFlag)

    QGestureRecognizer();
    virtual ~QGestureRecognizer();

    virtual QGesture *create(QObject *target);
    virtual Result recognize(QGesture *state, QObject *watched,
                             QEvent *event) = 0;
    virtual void reset(QGesture *state);

    static Qt::GestureType registerRecognizer(QGestureRecognizer *recognizer);
    static void unregisterRecognizer(Qt::GestureType type);
};

Q_DECLARE_OPERATORS_FOR_FLAGS(QGestureRecognizer::Result)

QT_END_NAMESPACE

#endif // QT_NO_GESTURES

#endif // QGESTURERECOGNIZER_H