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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
#ifndef ABSTRACTSCROLLAREA_H
#define ABSTRACTSCROLLAREA_H
#include "gvbwidget.h"
class ScrollBar;
class QGraphicsGridLayout;
class AbstractScrollArea : public GvbWidget
{
Q_OBJECT
public:
AbstractScrollArea(QGraphicsWidget *parent = nullptr);
~AbstractScrollArea();
public:
void setHorizontalScrollBarPolicy(Qt::ScrollBarPolicy policy);
void setVerticalScrollBarPolicy(Qt::ScrollBarPolicy policy);
Qt::ScrollBarPolicy verticalScrollBarPolicy() const;
Qt::ScrollBarPolicy horizontalScrollBarPolicy() const;
QGraphicsWidget *viewport() const;
void setViewport(QGraphicsWidget *viewport);
ScrollBar *verticalScrollBar() const;
ScrollBar *horizontalScrollBar() const;
signals:
void viewportChanged(QGraphicsWidget *viewport);
protected:
virtual bool event(QEvent *e);
virtual void scrollContentsBy(qreal dx, qreal dy);
private slots:
void verticalScrollStart();
void verticalScroll(qreal);
void horizontalScrollStart();
void horizontalScroll(qreal);
private:
void adjustScrollBars();
QGraphicsWidget *m_viewport;
ScrollBar *m_horizontalScrollBar;
ScrollBar *m_verticalScrollBar;
Qt::ScrollBarPolicy m_verticalScrollBarPolicy;
Qt::ScrollBarPolicy m_horizontalScrollBarPolicy;
qreal m_prevHorizontalValue;
qreal m_prevVerticalValue;
};
#endif // ABSTRACTSCROLLAREA_H
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