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+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtDeclarative module 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.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QDECLARATIVELAYOUTS_H
+#define QDECLARATIVELAYOUTS_H
+
+#include "qdeclarativeimplicitsizeitem_p.h"
+
+#include <private/qdeclarativestate_p.h>
+#include <private/qpodvector_p.h>
+
+#include <QtCore/QObject>
+#include <QtCore/QString>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(Declarative)
+class QDeclarativeBasePositionerPrivate;
+
+class Q_DECLARATIVE_PRIVATE_EXPORT QDeclarativeBasePositioner : public QDeclarativeImplicitSizeItem
+{
+    Q_OBJECT
+
+    Q_PROPERTY(int spacing READ spacing WRITE setSpacing NOTIFY spacingChanged)
+    Q_PROPERTY(QDeclarativeTransition *move READ move WRITE setMove NOTIFY moveChanged)
+    Q_PROPERTY(QDeclarativeTransition *add READ add WRITE setAdd NOTIFY addChanged)
+public:
+    enum PositionerType { None = 0x0, Horizontal = 0x1, Vertical = 0x2, Both = 0x3 };
+    QDeclarativeBasePositioner(PositionerType, QDeclarativeItem *parent);
+    ~QDeclarativeBasePositioner();
+
+    int spacing() const;
+    void setSpacing(int);
+
+    QDeclarativeTransition *move() const;
+    void setMove(QDeclarativeTransition *);
+
+    QDeclarativeTransition *add() const;
+    void setAdd(QDeclarativeTransition *);
+
+protected:
+    QDeclarativeBasePositioner(QDeclarativeBasePositionerPrivate &dd, PositionerType at, QDeclarativeItem *parent);
+    virtual void componentComplete();
+    virtual QVariant itemChange(GraphicsItemChange, const QVariant &);
+    void finishApplyTransitions();
+
+Q_SIGNALS:
+    void spacingChanged();
+    void moveChanged();
+    void addChanged();
+
+protected Q_SLOTS:
+    void prePositioning();
+    void graphicsWidgetGeometryChanged();
+
+protected:
+    virtual void doPositioning(QSizeF *contentSize)=0;
+    virtual void reportConflictingAnchors()=0;
+    class PositionedItem {
+    public :
+        PositionedItem(QGraphicsObject *i) : item(i), isNew(false), isVisible(true) {}
+        bool operator==(const PositionedItem &other) const { return other.item == item; }
+        QGraphicsObject *item;
+        bool isNew;
+        bool isVisible;
+    };
+
+    QPODVector<PositionedItem,8> positionedItems;
+    void positionX(int,const PositionedItem &target);
+    void positionY(int,const PositionedItem &target);
+
+private:
+    Q_DISABLE_COPY(QDeclarativeBasePositioner)
+    Q_DECLARE_PRIVATE_D(QGraphicsItem::d_ptr.data(), QDeclarativeBasePositioner)
+};
+
+class Q_AUTOTEST_EXPORT QDeclarativeColumn : public QDeclarativeBasePositioner
+{
+    Q_OBJECT
+public:
+    QDeclarativeColumn(QDeclarativeItem *parent=0);
+protected:
+    virtual void doPositioning(QSizeF *contentSize);
+    virtual void reportConflictingAnchors();
+private:
+    Q_DISABLE_COPY(QDeclarativeColumn)
+};
+
+class Q_AUTOTEST_EXPORT QDeclarativeRow: public QDeclarativeBasePositioner
+{
+    Q_OBJECT
+    Q_PROPERTY(Qt::LayoutDirection layoutDirection READ layoutDirection WRITE setLayoutDirection NOTIFY layoutDirectionChanged REVISION 1)
+    Q_PROPERTY(Qt::LayoutDirection effectiveLayoutDirection READ effectiveLayoutDirection NOTIFY effectiveLayoutDirectionChanged REVISION 1)
+public:
+    QDeclarativeRow(QDeclarativeItem *parent=0);
+
+    Qt::LayoutDirection layoutDirection() const;
+    void setLayoutDirection (Qt::LayoutDirection);
+    Qt::LayoutDirection effectiveLayoutDirection() const;
+
+Q_SIGNALS:
+    Q_REVISION(1) void layoutDirectionChanged();
+    Q_REVISION(1) void effectiveLayoutDirectionChanged();
+
+protected:
+    virtual void doPositioning(QSizeF *contentSize);
+    virtual void reportConflictingAnchors();
+private:
+    Q_DISABLE_COPY(QDeclarativeRow)
+};
+
+class Q_AUTOTEST_EXPORT QDeclarativeGrid : public QDeclarativeBasePositioner
+{
+    Q_OBJECT
+    Q_PROPERTY(int rows READ rows WRITE setRows NOTIFY rowsChanged)
+    Q_PROPERTY(int columns READ columns WRITE setColumns NOTIFY columnsChanged)
+    Q_PROPERTY(Flow flow READ flow WRITE setFlow NOTIFY flowChanged)
+    Q_PROPERTY(Qt::LayoutDirection layoutDirection READ layoutDirection WRITE setLayoutDirection NOTIFY layoutDirectionChanged REVISION 1)
+    Q_PROPERTY(Qt::LayoutDirection effectiveLayoutDirection READ effectiveLayoutDirection NOTIFY effectiveLayoutDirectionChanged REVISION 1)
+public:
+    QDeclarativeGrid(QDeclarativeItem *parent=0);
+
+    int rows() const {return m_rows;}
+    void setRows(const int rows);
+
+    int columns() const {return m_columns;}
+    void setColumns(const int columns);
+
+    Q_ENUMS(Flow)
+    enum Flow { LeftToRight, TopToBottom };
+    Flow flow() const;
+    void setFlow(Flow);
+
+    Qt::LayoutDirection layoutDirection() const;
+    void setLayoutDirection (Qt::LayoutDirection);
+    Qt::LayoutDirection effectiveLayoutDirection() const;
+
+Q_SIGNALS:
+    void rowsChanged();
+    void columnsChanged();
+    void flowChanged();
+    Q_REVISION(1) void layoutDirectionChanged();
+    Q_REVISION(1) void effectiveLayoutDirectionChanged();
+
+protected:
+    virtual void doPositioning(QSizeF *contentSize);
+    virtual void reportConflictingAnchors();
+
+private:
+    int m_rows;
+    int m_columns;
+    Flow m_flow;
+    Q_DISABLE_COPY(QDeclarativeGrid)
+};
+
+class QDeclarativeFlowPrivate;
+class Q_AUTOTEST_EXPORT QDeclarativeFlow: public QDeclarativeBasePositioner
+{
+    Q_OBJECT
+    Q_PROPERTY(Flow flow READ flow WRITE setFlow NOTIFY flowChanged)
+    Q_PROPERTY(Qt::LayoutDirection layoutDirection READ layoutDirection WRITE setLayoutDirection NOTIFY layoutDirectionChanged REVISION 1)
+    Q_PROPERTY(Qt::LayoutDirection effectiveLayoutDirection READ effectiveLayoutDirection NOTIFY effectiveLayoutDirectionChanged REVISION 1)
+public:
+    QDeclarativeFlow(QDeclarativeItem *parent=0);
+
+    Q_ENUMS(Flow)
+    enum Flow { LeftToRight, TopToBottom };
+    Flow flow() const;
+    void setFlow(Flow);
+
+    Qt::LayoutDirection layoutDirection() const;
+    void setLayoutDirection (Qt::LayoutDirection);
+    Qt::LayoutDirection effectiveLayoutDirection() const;
+Q_SIGNALS:
+    void flowChanged();
+    Q_REVISION(1) void layoutDirectionChanged();
+    Q_REVISION(1) void effectiveLayoutDirectionChanged();
+
+protected:
+    virtual void doPositioning(QSizeF *contentSize);
+    virtual void reportConflictingAnchors();
+protected:
+    QDeclarativeFlow(QDeclarativeFlowPrivate &dd, QDeclarativeItem *parent);
+private:
+    Q_DISABLE_COPY(QDeclarativeFlow)
+    Q_DECLARE_PRIVATE_D(QGraphicsItem::d_ptr.data(), QDeclarativeFlow)
+};
+
+
+QT_END_NAMESPACE
+
+QML_DECLARE_TYPE(QDeclarativeColumn)
+QML_DECLARE_TYPE(QDeclarativeRow)
+QML_DECLARE_TYPE(QDeclarativeGrid)
+QML_DECLARE_TYPE(QDeclarativeFlow)
+
+QT_END_HEADER
+
+#endif