Home · All Classes · All Functions · Overviews

flowlayout.h Example File
graphicsview/flowlayout/flowlayout.h

 /****************************************************************************
 **
 ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
 ** This file is part of the examples of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:LGPL$
 ** Commercial Usage
 ** Licensees holding valid Qt Commercial licenses may use this file in
 ** accordance with the Qt Commercial License Agreement provided with the
 ** Software or, alternatively, in accordance with the terms contained in
 ** a written agreement between you and Nokia.
 **
 ** GNU Lesser General Public License Usage
 ** Alternatively, this file may be used under the terms of the GNU Lesser
 ** General Public License version 2.1 as published by the Free Software
 ** Foundation and appearing in the file LICENSE.LGPL included in the
 ** packaging of this file.  Please review the following information to
 ** ensure the GNU Lesser General Public License version 2.1 requirements
 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
 **
 ** In addition, as a special exception, Nokia gives you certain additional
 ** rights.  These rights are described in the Nokia Qt LGPL Exception
 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
 **
 ** GNU General Public License Usage
 ** Alternatively, this file may be used under the terms of the GNU
 ** General Public License version 3.0 as published by the Free Software
 ** Foundation and appearing in the file LICENSE.GPL included in the
 ** packaging of this file.  Please review the following information to
 ** ensure the GNU General Public License version 3.0 requirements will be
 ** met: http://www.gnu.org/copyleft/gpl.html.
 **
 ** If you have questions regarding the use of this file, please contact
 ** Nokia at qt-info@nokia.com.
 ** $QT_END_LICENSE$
 **
 ****************************************************************************/

 #include <QtGui/qgraphicslayout.h>

 class FlowLayout : public QGraphicsLayout
 {
 public:
     FlowLayout();
     inline void addItem(QGraphicsLayoutItem *item);
     void insertItem(int index, QGraphicsLayoutItem *item);
     void setSpacing(Qt::Orientations o, qreal spacing);
     qreal spacing(Qt::Orientation o) const;

     // inherited functions
     void setGeometry(const QRectF &geom);

     int count() const;
     QGraphicsLayoutItem *itemAt(int index) const;
     void removeAt(int index);

 protected:
     QSizeF sizeHint(Qt::SizeHint which, const QSizeF &constraint = QSizeF()) const;

 private:
     qreal doLayout(const QRectF &geom, bool applyNewGeometry) const;
     QSizeF minSize(const QSizeF &constraint) const;
     QSizeF prefSize() const;
     QSizeF maxSize() const;

     QList<QGraphicsLayoutItem*> m_items;
     qreal m_spacing[2];
 };

 inline void FlowLayout::addItem(QGraphicsLayoutItem *item)
 {
     insertItem(-1, item);
 }