1 /**************************************************************************** 2 ** 3 ** Copyright (C) 2016 The Qt Company Ltd. 4 ** Contact: https://www.qt.io/licensing/ 5 ** 6 ** This file is part of the QtWidgets module of the Qt Toolkit. 7 ** 8 ** $QT_BEGIN_LICENSE:LGPL$ 9 ** Commercial License Usage 10 ** Licensees holding valid commercial Qt licenses may use this file in 11 ** accordance with the commercial license agreement provided with the 12 ** Software or, alternatively, in accordance with the terms contained in 13 ** a written agreement between you and The Qt Company. For licensing terms 14 ** and conditions see https://www.qt.io/terms-conditions. For further 15 ** information use the contact form at https://www.qt.io/contact-us. 16 ** 17 ** GNU Lesser General Public License Usage 18 ** Alternatively, this file may be used under the terms of the GNU Lesser 19 ** General Public License version 3 as published by the Free Software 20 ** Foundation and appearing in the file LICENSE.LGPL3 included in the 21 ** packaging of this file. Please review the following information to 22 ** ensure the GNU Lesser General Public License version 3 requirements 23 ** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. 24 ** 25 ** GNU General Public License Usage 26 ** Alternatively, this file may be used under the terms of the GNU 27 ** General Public License version 2.0 or (at your option) the GNU General 28 ** Public license version 3 or any later version approved by the KDE Free 29 ** Qt Foundation. The licenses are as published by the Free Software 30 ** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 31 ** included in the packaging of this file. Please review the following 32 ** information to ensure the GNU General Public License requirements will 33 ** be met: https://www.gnu.org/licenses/gpl-2.0.html and 34 ** https://www.gnu.org/licenses/gpl-3.0.html. 35 ** 36 ** $QT_END_LICENSE$ 37 ** 38 ****************************************************************************/ 39 40 #ifndef QSCROLLAREA_H 41 #define QSCROLLAREA_H 42 43 #include <QtWidgets/qtwidgetsglobal.h> 44 #include <QtWidgets/qabstractscrollarea.h> 45 46 QT_REQUIRE_CONFIG(scrollarea); 47 48 QT_BEGIN_NAMESPACE 49 50 class QScrollAreaPrivate; 51 52 class Q_WIDGETS_EXPORT QScrollArea : public QAbstractScrollArea 53 { 54 Q_OBJECT 55 Q_PROPERTY(bool widgetResizable READ widgetResizable WRITE setWidgetResizable) 56 Q_PROPERTY(Qt::Alignment alignment READ alignment WRITE setAlignment) 57 58 public: 59 explicit QScrollArea(QWidget *parent = nullptr); 60 ~QScrollArea(); 61 62 QWidget *widget() const; 63 void setWidget(QWidget *widget); 64 QWidget *takeWidget(); 65 66 bool widgetResizable() const; 67 void setWidgetResizable(bool resizable); 68 69 QSize sizeHint() const override; 70 71 bool focusNextPrevChild(bool next) override; 72 73 Qt::Alignment alignment() const; 74 void setAlignment(Qt::Alignment); 75 76 void ensureVisible(int x, int y, int xmargin = 50, int ymargin = 50); 77 void ensureWidgetVisible(QWidget *childWidget, int xmargin = 50, int ymargin = 50); 78 79 protected: 80 QScrollArea(QScrollAreaPrivate &dd, QWidget *parent = nullptr); 81 bool event(QEvent *) override; 82 bool eventFilter(QObject *, QEvent *) override; 83 void resizeEvent(QResizeEvent *) override; 84 void scrollContentsBy(int dx, int dy) override; 85 86 QSize viewportSizeHint() const override; 87 88 private: 89 Q_DECLARE_PRIVATE(QScrollArea) 90 Q_DISABLE_COPY(QScrollArea) 91 }; 92 93 QT_END_NAMESPACE 94 95 #endif // QSCROLLAREA_H 96