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#ifndef QGRAPHICSLAYOUTITEM_H

#define QGRAPHICSLAYOUTITEM_H

#include <QtCore/qscopedpointer.h>

#include <QtGui/qsizepolicy.h>

#include <QtGui/qevent.h>

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

QT_MODULE(Gui)

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

class QGraphicsLayoutItemPrivate;

class QGraphicsItem;

class Q_GUI_EXPORT QGraphicsLayoutItem

{

public:

    QGraphicsLayoutItem(QGraphicsLayoutItem *parent = 0, bool isLayout = false);

    virtual ~QGraphicsLayoutItem();

    void setSizePolicy(const QSizePolicy &policy);

    void setSizePolicy(QSizePolicy::Policy hPolicy, QSizePolicy::Policy vPolicy, QSizePolicy::ControlType controlType = QSizePolicy::DefaultType);

    QSizePolicy sizePolicy() const;

    void setMinimumSize(const QSizeF &size);

    inline void setMinimumSize(qreal w, qreal h);

    QSizeF minimumSize() const;

    void setMinimumWidth(qreal width);

    inline qreal minimumWidth() const;

    void setMinimumHeight(qreal height);

    inline qreal minimumHeight() const;

    void setPreferredSize(const QSizeF &size);

    inline void setPreferredSize(qreal w, qreal h);

    QSizeF preferredSize() const;

    void setPreferredWidth(qreal width);

    inline qreal preferredWidth() const;

    void setPreferredHeight(qreal height);

    inline qreal preferredHeight() const;

    void setMaximumSize(const QSizeF &size);

    inline void setMaximumSize(qreal w, qreal h);

    QSizeF maximumSize() const;

    void setMaximumWidth(qreal width);

    inline qreal maximumWidth() const;

    void setMaximumHeight(qreal height);

    inline qreal maximumHeight() const;

    virtual void setGeometry(const QRectF &rect);

    QRectF geometry() const;

    virtual void getContentsMargins(qreal *left, qreal *top, qreal *right, qreal *bottom) const;

    QRectF contentsRect() const;

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

    virtual void updateGeometry();  //### rename to sizeHintChanged()

    QGraphicsLayoutItem *parentLayoutItem() const;

    void setParentLayoutItem(QGraphicsLayoutItem *parent);

    bool isLayout() const;

    // ###Qt5: Make automatic reparenting work regardless of item/object/widget type.

    QGraphicsItem *graphicsItem() const;

    bool ownedByLayout() const;

protected:

    void setGraphicsItem(QGraphicsItem *item);

    void setOwnedByLayout(bool ownedByLayout);

    QGraphicsLayoutItem(QGraphicsLayoutItemPrivate &dd);

    virtual QSizeF sizeHint(Qt::SizeHint which, const QSizeF &constraint = QSizeF()) const = 0;

    QScopedPointer<QGraphicsLayoutItemPrivate> d_ptr;

private:

    QSizeF *effectiveSizeHints(const QSizeF &constraint) const;

    Q_DECLARE_PRIVATE(QGraphicsLayoutItem)

    friend class QGraphicsLayout;

};

Q_DECLARE_INTERFACE(QGraphicsLayoutItem, "com.trolltech.Qt.QGraphicsLayoutItem")

inline void QGraphicsLayoutItem::setMinimumSize(qreal aw, qreal ah)

{ setMinimumSize(QSizeF(aw, ah)); }

inline void QGraphicsLayoutItem::setPreferredSize(qreal aw, qreal ah)

{ setPreferredSize(QSizeF(aw, ah)); }

inline void QGraphicsLayoutItem::setMaximumSize(qreal aw, qreal ah)

{ setMaximumSize(QSizeF(aw, ah)); }

inline qreal QGraphicsLayoutItem::minimumWidth() const

{ return effectiveSizeHint(Qt::MinimumSize).width(); }

inline qreal QGraphicsLayoutItem::minimumHeight() const

{ return effectiveSizeHint(Qt::MinimumSize).height(); }

inline qreal QGraphicsLayoutItem::preferredWidth() const

{ return effectiveSizeHint(Qt::PreferredSize).width(); }

inline qreal QGraphicsLayoutItem::preferredHeight() const

{ return effectiveSizeHint(Qt::PreferredSize).height(); }

inline qreal QGraphicsLayoutItem::maximumWidth() const

{ return effectiveSizeHint(Qt::MaximumSize).width(); }

inline qreal QGraphicsLayoutItem::maximumHeight() const

{ return effectiveSizeHint(Qt::MaximumSize).height(); }

#endif

QT_END_NAMESPACE

QT_END_HEADER

#endif