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/****************************************************************************
**
** Copyright (C) 2014 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.
**
** $QT_BEGIN_LICENSE:LGPL21$
** 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 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** 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.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#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_WIDGETS_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;
bool shownOnce;
bool inResize;
mutable QSize sizeHint;
QAbstractScrollArea::SizeAdjustPolicy sizeAdjustPolicy;
QWidget *viewport;
QWidget *cornerWidget;
QRect cornerPaintingRect;
#ifdef Q_WS_MAC
QRect reverseCornerPaintingRect;
#endif
int left, top, right, bottom; // viewport margin
int xoffset, yoffset;
QPoint overshoot;
void init();
void layoutChildren();
// ### Fix for 4.4, talk to Bjoern E or Girish.
virtual void scrollBarPolicyChanged(Qt::Orientation, Qt::ScrollBarPolicy) {}
bool canStartScrollingAt( const QPoint &startPos );
void flashScrollBars();
void setScrollBarTransient(QScrollBar *scrollBar, bool transient);
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
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