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 QGRAPHICSANCHORLAYOUT_H 41 #define QGRAPHICSANCHORLAYOUT_H 42 43 #include <QtWidgets/qtwidgetsglobal.h> 44 #include <QtWidgets/qgraphicsitem.h> 45 #include <QtWidgets/qgraphicslayout.h> 46 47 QT_REQUIRE_CONFIG(graphicsview); 48 49 QT_BEGIN_NAMESPACE 50 51 class QGraphicsAnchorPrivate; 52 class QGraphicsAnchorLayout; 53 class QGraphicsAnchorLayoutPrivate; 54 55 class Q_WIDGETS_EXPORT QGraphicsAnchor : public QObject 56 { 57 Q_OBJECT 58 Q_PROPERTY(qreal spacing READ spacing WRITE setSpacing RESET unsetSpacing) 59 Q_PROPERTY(QSizePolicy::Policy sizePolicy READ sizePolicy WRITE setSizePolicy) 60 public: 61 void setSpacing(qreal spacing); 62 void unsetSpacing(); 63 qreal spacing() const; 64 void setSizePolicy(QSizePolicy::Policy policy); 65 QSizePolicy::Policy sizePolicy() const; 66 ~QGraphicsAnchor(); 67 private: 68 QGraphicsAnchor(QGraphicsAnchorLayout *parent); 69 70 Q_DECLARE_PRIVATE(QGraphicsAnchor) 71 72 friend class QGraphicsAnchorLayoutPrivate; 73 }; 74 75 class Q_WIDGETS_EXPORT QGraphicsAnchorLayout : public QGraphicsLayout 76 { 77 public: 78 QGraphicsAnchorLayout(QGraphicsLayoutItem *parent = nullptr); 79 virtual ~QGraphicsAnchorLayout(); 80 81 QGraphicsAnchor *addAnchor(QGraphicsLayoutItem *firstItem, Qt::AnchorPoint firstEdge, 82 QGraphicsLayoutItem *secondItem, Qt::AnchorPoint secondEdge); 83 QGraphicsAnchor *anchor(QGraphicsLayoutItem *firstItem, Qt::AnchorPoint firstEdge, 84 QGraphicsLayoutItem *secondItem, Qt::AnchorPoint secondEdge); 85 86 void addCornerAnchors(QGraphicsLayoutItem *firstItem, Qt::Corner firstCorner, 87 QGraphicsLayoutItem *secondItem, Qt::Corner secondCorner); 88 89 void addAnchors(QGraphicsLayoutItem *firstItem, 90 QGraphicsLayoutItem *secondItem, 91 Qt::Orientations orientations = Qt::Horizontal | Qt::Vertical); 92 93 void setHorizontalSpacing(qreal spacing); 94 void setVerticalSpacing(qreal spacing); 95 void setSpacing(qreal spacing); 96 qreal horizontalSpacing() const; 97 qreal verticalSpacing() const; 98 99 void removeAt(int index) override; 100 void setGeometry(const QRectF &rect) override; 101 int count() const override; 102 QGraphicsLayoutItem *itemAt(int index) const override; 103 104 void invalidate() override; 105 protected: 106 QSizeF sizeHint(Qt::SizeHint which, const QSizeF &constraint = QSizeF()) const override; 107 108 private: 109 Q_DISABLE_COPY(QGraphicsAnchorLayout) 110 Q_DECLARE_PRIVATE(QGraphicsAnchorLayout) 111 112 friend class QGraphicsAnchor; 113 }; 114 115 QT_END_NAMESPACE 116 117 #endif 118