/****************************************************************************

**

** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).

** All rights reserved.

** Contact: Nokia Corporation (qt-info@nokia.com)

**

** This file is part of the QtGui module of the Qt Toolkit.

**

** $QT_BEGIN_LICENSE:LGPL$

** No Commercial Usage

** This file contains pre-release code and may not be distributed.

** You may use this file in accordance with the terms and conditions

** contained in the Technology Preview License Agreement accompanying

** this package.

**

** 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, Nokia gives you certain additional

** rights.  These rights are described in the Nokia Qt LGPL Exception

** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

**

** If you have questions regarding the use of this file, please contact

** Nokia at qt-info@nokia.com.

**

**

**

**

**

**

**

**

** $QT_END_LICENSE$

**

****************************************************************************/

#ifndef QMOUSE_QWS_H

#define QMOUSE_QWS_H

#include <QtCore/qobject.h>

#include <QtGui/qpolygon.h>

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

QT_MODULE(Gui)

class QWSMouseHandlerPrivate;

class QScreen;

class Q_GUI_EXPORT QWSPointerCalibrationData

{

public:

    enum Location { TopLeft = 0, BottomLeft = 1, BottomRight = 2, TopRight = 3,

                    Center = 4, LastLocation = Center };

    QPoint devPoints[5];

    QPoint screenPoints[5];

};

class Q_GUI_EXPORT QWSMouseHandler

{

public:

    explicit QWSMouseHandler(const QString &driver = QString(),

                             const QString &device = QString());

    virtual ~QWSMouseHandler();

    virtual void clearCalibration() {}

    virtual void calibrate(const QWSPointerCalibrationData *) {}

    virtual void getCalibration(QWSPointerCalibrationData *) const {}

    virtual void resume() = 0;

    virtual void suspend() = 0;

    void limitToScreen(QPoint &pt);

    void mouseChanged(const QPoint& pos, int bstate, int wheel = 0);

    const QPoint &pos() const { return mousePos; }

    void setScreen(const QScreen *screen);

protected:

    QPoint &mousePos;

    QWSMouseHandlerPrivate *d_ptr;

};

class Q_GUI_EXPORT QWSCalibratedMouseHandler : public QWSMouseHandler

{

public:

    explicit QWSCalibratedMouseHandler(const QString &driver = QString(),

                                       const QString &device = QString());

    virtual void clearCalibration();

    virtual void calibrate(const QWSPointerCalibrationData *);

    virtual void getCalibration(QWSPointerCalibrationData *) const;

protected:

    bool sendFiltered(const QPoint &, int button);

    QPoint transform(const QPoint &);

    void readCalibration();

    void writeCalibration();

    void setFilterSize(int);

private:

    int a, b, c;

    int d, e, f;

    int s;

    QPolygon samples;

    int currSample;

    int numSamples;

};

QT_END_NAMESPACE

QT_END_HEADER

#endif // QMOUSE_QWS_H