1 /**************************************************************************** 2 ** 3 ** Copyright (C) 2015 The Qt Company Ltd. 4 ** Contact: http://www.qt.io/licensing/ 5 ** 6 ** This file is part of the QtGui 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 http://www.qt.io/terms-conditions. For further 15 ** information use the contact form at http://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 2.1 or version 3 as published by the Free 20 ** Software Foundation and appearing in the file LICENSE.LGPLv21 and 21 ** LICENSE.LGPLv3 included in the packaging of this file. Please review the 22 ** following information to ensure the GNU Lesser General Public License 23 ** requirements will be met: https://www.gnu.org/licenses/lgpl.html and 24 ** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. 25 ** 26 ** As a special exception, The Qt Company gives you certain additional 27 ** rights. These rights are described in The Qt Company LGPL Exception 28 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. 29 ** 30 ** GNU General Public License Usage 31 ** Alternatively, this file may be used under the terms of the GNU 32 ** General Public License version 3.0 as published by the Free Software 33 ** Foundation and appearing in the file LICENSE.GPL included in the 34 ** packaging of this file. Please review the following information to 35 ** ensure the GNU General Public License version 3.0 requirements will be 36 ** met: http://www.gnu.org/copyleft/gpl.html. 37 ** 38 ** $QT_END_LICENSE$ 39 ** 40 ****************************************************************************/ 41 42 #ifndef QGRAPHICSLAYOUT_H 43 #define QGRAPHICSLAYOUT_H 44 45 #include <QtGui/qgraphicslayoutitem.h> 46 47 QT_BEGIN_HEADER 48 49 QT_BEGIN_NAMESPACE 50 51 QT_MODULE(Gui) 52 53 #if !defined(QT_NO_GRAPHICSVIEW) || (QT_EDITION & QT_MODULE_GRAPHICSVIEW) != QT_MODULE_GRAPHICSVIEW 54 55 class QGraphicsLayoutPrivate; 56 class QGraphicsLayoutItem; 57 class QGraphicsWidget; 58 59 class Q_GUI_EXPORT QGraphicsLayout : public QGraphicsLayoutItem 60 { 61 public: 62 QGraphicsLayout(QGraphicsLayoutItem *parent = 0); 63 ~QGraphicsLayout(); 64 65 void setContentsMargins(qreal left, qreal top, qreal right, qreal bottom); 66 void getContentsMargins(qreal *left, qreal *top, qreal *right, qreal *bottom) const; 67 68 void activate(); 69 bool isActivated() const; 70 virtual void invalidate(); 71 virtual void updateGeometry(); 72 73 virtual void widgetEvent(QEvent *e); 74 75 virtual int count() const = 0; 76 virtual QGraphicsLayoutItem *itemAt(int i) const = 0; 77 virtual void removeAt(int index) = 0; 78 79 static void setInstantInvalidatePropagation(bool enable); 80 static bool instantInvalidatePropagation(); 81 protected: 82 QGraphicsLayout(QGraphicsLayoutPrivate &, QGraphicsLayoutItem *); 83 void addChildLayoutItem(QGraphicsLayoutItem *layoutItem); 84 85 private: 86 Q_DISABLE_COPY(QGraphicsLayout) 87 Q_DECLARE_PRIVATE(QGraphicsLayout) 88 friend class QGraphicsWidget; 89 }; 90 91 Q_DECLARE_INTERFACE(QGraphicsLayout, "com.trolltech.Qt.QGraphicsLayout") 92 93 #endif 94 95 QT_END_NAMESPACE 96 97 QT_END_HEADER 98 99 #endif 100 101