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

**

** 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 QABSTRACTSCROLLAREA_P_H

#define QABSTRACTSCROLLAREA_P_H

//

//  W A R N I N G

//  -------------

//

// This file is not part of the Qt API.  It exists purely as an

// implementation detail.  This header file may change from version to

// version without notice, or even be removed.

//

// We mean it.

//

#include "private/qframe_p.h"

#include "qabstractscrollarea.h"

QT_BEGIN_NAMESPACE

#ifndef QT_NO_SCROLLAREA

class QScrollBar;

class QAbstractScrollAreaScrollBarContainer;

class Q_AUTOTEST_EXPORT QAbstractScrollAreaPrivate: public QFramePrivate

{

    Q_DECLARE_PUBLIC(QAbstractScrollArea)

public:

    QAbstractScrollAreaPrivate();

    void replaceScrollBar(QScrollBar *scrollBar, Qt::Orientation orientation);

    QAbstractScrollAreaScrollBarContainer *scrollBarContainers[Qt::Vertical + 1];

    QScrollBar *hbar, *vbar;

    Qt::ScrollBarPolicy vbarpolicy, hbarpolicy;

    QWidget *viewport;

    QWidget *cornerWidget;

    QRect cornerPaintingRect;

#ifdef Q_WS_MAC

    QRect reverseCornerPaintingRect;

#endif

    int left, top, right, bottom; // viewport margin

    int xoffset, yoffset;

    void init();

    void layoutChildren();

    // ### Fix for 4.4, talk to Bjoern E or Girish.

    virtual void scrollBarPolicyChanged(Qt::Orientation, Qt::ScrollBarPolicy) {}

    void _q_hslide(int);

    void _q_vslide(int);

    void _q_showOrHideScrollBars();

    virtual QPoint contentsOffset() const;

    inline bool viewportEvent(QEvent *event)

    { return q_func()->viewportEvent(event); }

    QScopedPointer<QObject> viewportFilter;

#ifdef Q_WS_WIN

    bool singleFingerPanEnabled;

    void setSingleFingerPanEnabled(bool on = true);

#endif

};

class QAbstractScrollAreaFilter : public QObject

{

    Q_OBJECT

public:

    QAbstractScrollAreaFilter(QAbstractScrollAreaPrivate *p) : d(p)

    { setObjectName(QLatin1String("qt_abstractscrollarea_filter")); }

    bool eventFilter(QObject *o, QEvent *e)

    { return (o == d->viewport ? d->viewportEvent(e) : false); }

private:

    QAbstractScrollAreaPrivate *d;

};

class QBoxLayout;

class QAbstractScrollAreaScrollBarContainer : public QWidget

{

public:

    enum LogicalPosition { LogicalLeft = 1, LogicalRight = 2 };

    QAbstractScrollAreaScrollBarContainer(Qt::Orientation orientation, QWidget *parent);

    void addWidget(QWidget *widget, LogicalPosition position);

    QWidgetList widgets(LogicalPosition position);

    void removeWidget(QWidget *widget);

    QScrollBar *scrollBar;

    QBoxLayout *layout;

private:

    int scrollBarLayoutIndex() const;

    Qt::Orientation orientation;

};

#endif // QT_NO_SCROLLAREA

QT_END_NAMESPACE

#endif // QABSTRACTSCROLLAREA_P_H