examples/graphicsview/flowlayout/flowlayout.h
changeset 0 1918ee327afb
child 4 3b1da2848fc7
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/examples/graphicsview/flowlayout/flowlayout.h	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,77 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 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.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** 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.
+**
+** 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);
+}