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****************************************************************************/

#ifndef QGRAPHICSANCHORLAYOUT_H

#define QGRAPHICSANCHORLAYOUT_H

#include <QtGui/qgraphicsitem.h>

#include <QtGui/qgraphicslayout.h>

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

QT_MODULE(Gui)

#if !defined(QT_NO_GRAPHICSVIEW) || (QT_EDITION & QT_MODULE_GRAPHICSVIEW) != QT_MODULE_GRAPHICSVIEW

class QGraphicsAnchorPrivate;

class QGraphicsAnchorLayout;

class QGraphicsAnchorLayoutPrivate;

class Q_GUI_EXPORT QGraphicsAnchor : public QObject

{

    Q_OBJECT

    Q_PROPERTY(qreal spacing READ spacing WRITE setSpacing RESET unsetSpacing)

    Q_PROPERTY(QSizePolicy::Policy sizePolicy READ sizePolicy WRITE setSizePolicy)

public:

    void setSpacing(qreal spacing);

    void unsetSpacing();

    qreal spacing() const;

    void setSizePolicy(QSizePolicy::Policy policy);

    QSizePolicy::Policy sizePolicy() const;

    ~QGraphicsAnchor();

private:

    QGraphicsAnchor(QGraphicsAnchorLayout *parent);

    Q_DECLARE_PRIVATE(QGraphicsAnchor)

    friend class QGraphicsAnchorLayoutPrivate;

    friend struct AnchorData;

};

class Q_GUI_EXPORT QGraphicsAnchorLayout : public QGraphicsLayout

{

public:

    QGraphicsAnchorLayout(QGraphicsLayoutItem *parent = 0);

    virtual ~QGraphicsAnchorLayout();

    QGraphicsAnchor *addAnchor(QGraphicsLayoutItem *firstItem, Qt::AnchorPoint firstEdge,

                               QGraphicsLayoutItem *secondItem, Qt::AnchorPoint secondEdge);

    QGraphicsAnchor *anchor(QGraphicsLayoutItem *firstItem, Qt::AnchorPoint firstEdge,

                            QGraphicsLayoutItem *secondItem, Qt::AnchorPoint secondEdge);

    void addCornerAnchors(QGraphicsLayoutItem *firstItem, Qt::Corner firstCorner,

                          QGraphicsLayoutItem *secondItem, Qt::Corner secondCorner);

    void addAnchors(QGraphicsLayoutItem *firstItem,

                    QGraphicsLayoutItem *secondItem,

                    Qt::Orientations orientations = Qt::Horizontal | Qt::Vertical);

    void setHorizontalSpacing(qreal spacing);

    void setVerticalSpacing(qreal spacing);

    void setSpacing(qreal spacing);

    qreal horizontalSpacing() const;

    qreal verticalSpacing() const;

    void removeAt(int index);

    void setGeometry(const QRectF &rect);

    int count() const;

    QGraphicsLayoutItem *itemAt(int index) const;

    void invalidate();

protected:

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

private:

    Q_DISABLE_COPY(QGraphicsAnchorLayout)

    Q_DECLARE_PRIVATE(QGraphicsAnchorLayout)

    friend class QGraphicsAnchor;

};

#endif

QT_END_NAMESPACE

QT_END_HEADER

#endif