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/****************************************************************************
**
** Copyright (C) 2022 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtWidgets module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:COMM$
**
** 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 The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** $QT_END_LICENSE$
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
******************************************************************************/
#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 <QtWidgets/private/qtwidgetsglobal_p.h>
#include "private/qframe_p.h"
#include "qabstractscrollarea.h"
#include <QtGui/private/qgridlayoutengine_p.h>
QT_BEGIN_NAMESPACE
#if QT_CONFIG(scrollarea)
class QScrollBar;
class QAbstractScrollAreaScrollBarContainer;
class QAbstractScrollAreaPrivate: public QFramePrivate
{
Q_DECLARE_PUBLIC(QAbstractScrollArea)
public:
QAbstractScrollAreaPrivate();
~QAbstractScrollAreaPrivate();
void replaceScrollBar(QScrollBar *scrollBar, Qt::Orientation orientation);
QHVContainer<QAbstractScrollAreaScrollBarContainer *> scrollBarContainers;
QScrollBar *hbar, *vbar;
Qt::ScrollBarPolicy vbarpolicy, hbarpolicy;
bool shownOnce;
bool inResize;
mutable QSize sizeHint;
QAbstractScrollArea::SizeAdjustPolicy sizeAdjustPolicy;
QWidget *viewport;
QWidget *cornerWidget;
QRect cornerPaintingRect;
int left, top, right, bottom; // viewport margin
int xoffset, yoffset;
QPoint overshoot;
void init();
void layoutChildren();
void layoutChildren_helper(bool *needHorizontalScrollbar, bool *needVerticalScrollbar);
virtual void scrollBarPolicyChanged(Qt::Orientation, Qt::ScrollBarPolicy) {}
virtual bool canStartScrollingAt( const QPoint &startPos ) const;
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;
};
class QAbstractScrollAreaFilter : public QObject
{
Q_OBJECT
public:
QAbstractScrollAreaFilter(QAbstractScrollAreaPrivate *p) : d(p)
{ setObjectName(QLatin1String("qt_abstractscrollarea_filter")); }
bool eventFilter(QObject *o, QEvent *e) override
{ 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_CONFIG(scrollarea)
QT_END_NAMESPACE
#endif // QABSTRACTSCROLLAREA_P_H
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