154 lines
5.4 KiB
C++
154 lines
5.4 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2016 The Qt Company Ltd.
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** Contact: https://www.qt.io/licensing/
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**
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** This file is part of the QtWidgets module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see https://www.qt.io/terms-conditions. For further
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** information use the contact form at https://www.qt.io/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 3 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL3 included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 3 requirements
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** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 2.0 or (at your option) the GNU General
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** Public license version 3 or any later version approved by the KDE Free
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** Qt Foundation. The licenses are as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
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** included in the packaging of this file. Please review the following
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** information to ensure the GNU General Public License requirements will
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** be met: https://www.gnu.org/licenses/gpl-2.0.html and
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** https://www.gnu.org/licenses/gpl-3.0.html.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#ifndef QABSTRACTSCROLLAREA_H
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#define QABSTRACTSCROLLAREA_H
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#include <QtWidgets/qtwidgetsglobal.h>
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#include <QtWidgets/qframe.h>
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QT_BEGIN_NAMESPACE
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#if QT_CONFIG(scrollarea)
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class QMargins;
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class QScrollBar;
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class QAbstractScrollAreaPrivate;
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class Q_WIDGETS_EXPORT QAbstractScrollArea : public QFrame
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{
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Q_OBJECT
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Q_PROPERTY(Qt::ScrollBarPolicy verticalScrollBarPolicy READ verticalScrollBarPolicy WRITE setVerticalScrollBarPolicy)
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Q_PROPERTY(Qt::ScrollBarPolicy horizontalScrollBarPolicy READ horizontalScrollBarPolicy WRITE setHorizontalScrollBarPolicy)
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Q_PROPERTY(SizeAdjustPolicy sizeAdjustPolicy READ sizeAdjustPolicy WRITE setSizeAdjustPolicy)
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public:
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explicit QAbstractScrollArea(QWidget *parent = nullptr);
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~QAbstractScrollArea();
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enum SizeAdjustPolicy {
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AdjustIgnored,
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AdjustToContentsOnFirstShow,
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AdjustToContents
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};
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Q_ENUM(SizeAdjustPolicy)
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Qt::ScrollBarPolicy verticalScrollBarPolicy() const;
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void setVerticalScrollBarPolicy(Qt::ScrollBarPolicy);
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QScrollBar *verticalScrollBar() const;
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void setVerticalScrollBar(QScrollBar *scrollbar);
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Qt::ScrollBarPolicy horizontalScrollBarPolicy() const;
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void setHorizontalScrollBarPolicy(Qt::ScrollBarPolicy);
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QScrollBar *horizontalScrollBar() const;
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void setHorizontalScrollBar(QScrollBar *scrollbar);
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QWidget *cornerWidget() const;
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void setCornerWidget(QWidget *widget);
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void addScrollBarWidget(QWidget *widget, Qt::Alignment alignment);
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QWidgetList scrollBarWidgets(Qt::Alignment alignment);
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QWidget *viewport() const;
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void setViewport(QWidget *widget);
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QSize maximumViewportSize() const;
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QSize minimumSizeHint() const override;
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QSize sizeHint() const override;
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virtual void setupViewport(QWidget *viewport);
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SizeAdjustPolicy sizeAdjustPolicy() const;
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void setSizeAdjustPolicy(SizeAdjustPolicy policy);
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protected:
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QAbstractScrollArea(QAbstractScrollAreaPrivate &dd, QWidget *parent = nullptr);
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void setViewportMargins(int left, int top, int right, int bottom);
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void setViewportMargins(const QMargins &margins);
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QMargins viewportMargins() const;
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bool eventFilter(QObject *, QEvent *) override;
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bool event(QEvent *) override;
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virtual bool viewportEvent(QEvent *);
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void resizeEvent(QResizeEvent *) override;
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void paintEvent(QPaintEvent *) override;
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void mousePressEvent(QMouseEvent *) override;
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void mouseReleaseEvent(QMouseEvent *) override;
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void mouseDoubleClickEvent(QMouseEvent *) override;
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void mouseMoveEvent(QMouseEvent *) override;
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#if QT_CONFIG(wheelevent)
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void wheelEvent(QWheelEvent *) override;
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#endif
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#ifndef QT_NO_CONTEXTMENU
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void contextMenuEvent(QContextMenuEvent *) override;
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#endif
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#if QT_CONFIG(draganddrop)
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void dragEnterEvent(QDragEnterEvent *) override;
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void dragMoveEvent(QDragMoveEvent *) override;
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void dragLeaveEvent(QDragLeaveEvent *) override;
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void dropEvent(QDropEvent *) override;
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#endif
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void keyPressEvent(QKeyEvent *) override;
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virtual void scrollContentsBy(int dx, int dy);
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virtual QSize viewportSizeHint() const;
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private:
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Q_DECLARE_PRIVATE(QAbstractScrollArea)
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Q_DISABLE_COPY(QAbstractScrollArea)
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Q_PRIVATE_SLOT(d_func(), void _q_hslide(int))
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Q_PRIVATE_SLOT(d_func(), void _q_vslide(int))
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Q_PRIVATE_SLOT(d_func(), void _q_showOrHideScrollBars())
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friend class QStyleSheetStyle;
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friend class QWidgetPrivate;
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};
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#endif // QT_CONFIG(scrollarea)
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QT_END_NAMESPACE
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#endif // QABSTRACTSCROLLAREA_H
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