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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#ifndef QABSTRACTSCROLLAREA_H
#define QABSTRACTSCROLLAREA_H
#include <QtWidgets/qtwidgetsglobal.h>
#include <QtWidgets/qframe.h>
QT_BEGIN_NAMESPACE
#if QT_CONFIG(scrollarea)
class QMargins;
class QScrollBar;
class QAbstractScrollAreaPrivate;
class Q_WIDGETS_EXPORT QAbstractScrollArea : public QFrame
{
Q_OBJECT
Q_PROPERTY(Qt::ScrollBarPolicy verticalScrollBarPolicy READ verticalScrollBarPolicy
WRITE setVerticalScrollBarPolicy)
Q_PROPERTY(Qt::ScrollBarPolicy horizontalScrollBarPolicy READ horizontalScrollBarPolicy
WRITE setHorizontalScrollBarPolicy)
Q_PROPERTY(SizeAdjustPolicy sizeAdjustPolicy READ sizeAdjustPolicy WRITE setSizeAdjustPolicy)
public:
explicit QAbstractScrollArea(QWidget *parent = nullptr);
~QAbstractScrollArea();
enum SizeAdjustPolicy {
AdjustIgnored,
AdjustToContentsOnFirstShow,
AdjustToContents
};
Q_ENUM(SizeAdjustPolicy)
Qt::ScrollBarPolicy verticalScrollBarPolicy() const;
void setVerticalScrollBarPolicy(Qt::ScrollBarPolicy);
QScrollBar *verticalScrollBar() const;
void setVerticalScrollBar(QScrollBar *scrollbar);
Qt::ScrollBarPolicy horizontalScrollBarPolicy() const;
void setHorizontalScrollBarPolicy(Qt::ScrollBarPolicy);
QScrollBar *horizontalScrollBar() const;
void setHorizontalScrollBar(QScrollBar *scrollbar);
QWidget *cornerWidget() const;
void setCornerWidget(QWidget *widget);
void addScrollBarWidget(QWidget *widget, Qt::Alignment alignment);
QWidgetList scrollBarWidgets(Qt::Alignment alignment);
QWidget *viewport() const;
void setViewport(QWidget *widget);
QSize maximumViewportSize() const;
QSize minimumSizeHint() const override;
QSize sizeHint() const override;
virtual void setupViewport(QWidget *viewport);
SizeAdjustPolicy sizeAdjustPolicy() const;
void setSizeAdjustPolicy(SizeAdjustPolicy policy);
protected:
QAbstractScrollArea(QAbstractScrollAreaPrivate &dd, QWidget *parent = nullptr);
void setViewportMargins(int left, int top, int right, int bottom);
void setViewportMargins(const QMargins &margins);
QMargins viewportMargins() const;
bool eventFilter(QObject *, QEvent *) override;
bool event(QEvent *) override;
virtual bool viewportEvent(QEvent *);
void resizeEvent(QResizeEvent *) override;
void paintEvent(QPaintEvent *) override;
void mousePressEvent(QMouseEvent *) override;
void mouseReleaseEvent(QMouseEvent *) override;
void mouseDoubleClickEvent(QMouseEvent *) override;
void mouseMoveEvent(QMouseEvent *) override;
#if QT_CONFIG(wheelevent)
void wheelEvent(QWheelEvent *) override;
#endif
#ifndef QT_NO_CONTEXTMENU
void contextMenuEvent(QContextMenuEvent *) override;
#endif
#if QT_CONFIG(draganddrop)
void dragEnterEvent(QDragEnterEvent *) override;
void dragMoveEvent(QDragMoveEvent *) override;
void dragLeaveEvent(QDragLeaveEvent *) override;
void dropEvent(QDropEvent *) override;
#endif
void keyPressEvent(QKeyEvent *) override;
virtual void scrollContentsBy(int dx, int dy);
virtual QSize viewportSizeHint() const;
private:
Q_DECLARE_PRIVATE(QAbstractScrollArea)
Q_DISABLE_COPY(QAbstractScrollArea)
Q_PRIVATE_SLOT(d_func(), void _q_hslide(int))
Q_PRIVATE_SLOT(d_func(), void _q_vslide(int))
Q_PRIVATE_SLOT(d_func(), void _q_showOrHideScrollBars())
friend class QStyleSheetStyle;
friend class QWidgetPrivate;
};
#endif // QT_CONFIG(scrollarea)
QT_END_NAMESPACE
#endif // QABSTRACTSCROLLAREA_H
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