qgraphicsitem.h

奇趣公司比较新的qt/emd版本

                  QGraphicsItem *parent, QGraphicsScene *scene);
    QGraphicsItemPrivate *d_ptr;

    void addToIndex();
    void removeFromIndex();
    void prepareGeometryChange();

private:
    Q_DISABLE_COPY(QGraphicsItem)
    Q_DECLARE_PRIVATE(QGraphicsItem)
    friend class QGraphicsItemGroup;
    friend class QGraphicsScene;
    friend class QGraphicsScenePrivate;
    friend class QGraphicsSceneFindItemBspTreeVisitor;
    friend class QGraphicsView;
    friend class QGraphicsViewPrivate;
    friend class tst_QGraphicsItem;
    friend bool qt_closestLeaf(const QGraphicsItem *, const QGraphicsItem *);
    friend bool qt_closestItemFirst(const QGraphicsItem *, const QGraphicsItem *);
};

Q_DECLARE_OPERATORS_FOR_FLAGS(QGraphicsItem::GraphicsItemFlags)
Q_DECLARE_METATYPE(QGraphicsItem *)
Q_DECLARE_METATYPE(QGraphicsScene *)

inline void QGraphicsItem::setPos(qreal ax, qreal ay)
{ setPos(QPointF(ax, ay)); }
inline void QGraphicsItem::ensureVisible(qreal ax, qreal ay, qreal w, qreal h, int xmargin, int ymargin)
{ ensureVisible(QRectF(ax, ay, w, h), xmargin, ymargin); }
inline void QGraphicsItem::update(qreal ax, qreal ay, qreal width, qreal height)
{ update(QRectF(ax, ay, width, height)); }
inline bool QGraphicsItem::isObscured(qreal ax, qreal ay, qreal w, qreal h) const
{ return isObscured(QRectF(ax, ay, w, h)); }
inline QPointF QGraphicsItem::mapToItem(const QGraphicsItem *item, qreal ax, qreal ay) const
{ return mapToItem(item, QPointF(ax, ay)); }
inline QPointF QGraphicsItem::mapToParent(qreal ax, qreal ay) const
{ return mapToParent(QPointF(ax, ay)); }
inline QPointF QGraphicsItem::mapToScene(qreal ax, qreal ay) const
{ return mapToScene(QPointF(ax, ay));  }
inline QPointF QGraphicsItem::mapFromItem(const QGraphicsItem *item, qreal ax, qreal ay) const
{ return mapFromItem(item, QPointF(ax, ay)); }
inline QPointF QGraphicsItem::mapFromParent(qreal ax, qreal ay) const
{ return mapFromParent(QPointF(ax, ay));  }
inline QPointF QGraphicsItem::mapFromScene(qreal ax, qreal ay) const
{ return mapFromScene(QPointF(ax, ay));  }
inline QPolygonF QGraphicsItem::mapToItem(const QGraphicsItem *item, qreal ax, qreal ay, qreal w, qreal h) const
{ return mapToItem(item, QRectF(ax, ay, w, h)); }
inline QPolygonF QGraphicsItem::mapToParent(qreal ax, qreal ay, qreal w, qreal h) const
{ return mapToParent(QRectF(ax, ay, w, h)); }
inline QPolygonF QGraphicsItem::mapToScene(qreal ax, qreal ay, qreal w, qreal h) const
{ return mapToScene(QRectF(ax, ay, w, h)); }
inline QPolygonF QGraphicsItem::mapFromItem(const QGraphicsItem *item, qreal ax, qreal ay, qreal w, qreal h) const
{ return mapFromItem(item, QRectF(ax, ay, w, h)); }
inline QPolygonF QGraphicsItem::mapFromParent(qreal ax, qreal ay, qreal w, qreal h) const
{ return mapFromParent(QRectF(ax, ay, w, h)); }
inline QPolygonF QGraphicsItem::mapFromScene(qreal ax, qreal ay, qreal w, qreal h) const
{ return mapFromScene(QRectF(ax, ay, w, h)); }

class QAbstractGraphicsShapeItemPrivate;
class Q_GUI_EXPORT QAbstractGraphicsShapeItem : public QGraphicsItem
{
public:
    QAbstractGraphicsShapeItem(QGraphicsItem *parent = 0
#ifndef Q_QDOC
                               // obsolete argument
                               , QGraphicsScene *scene = 0
#endif
        );
    ~QAbstractGraphicsShapeItem();

    QPen pen() const;
    void setPen(const QPen &pen);

    QBrush brush() const;
    void setBrush(const QBrush &brush);

    bool isObscuredBy(const QGraphicsItem *item) const;
    QPainterPath opaqueArea() const;

protected:
    QAbstractGraphicsShapeItem(QAbstractGraphicsShapeItemPrivate &dd,
                               QGraphicsItem *parent, QGraphicsScene *scene);

private:
    Q_DISABLE_COPY(QAbstractGraphicsShapeItem)
    Q_DECLARE_PRIVATE(QAbstractGraphicsShapeItem)
};

class QGraphicsPathItemPrivate;
class Q_GUI_EXPORT QGraphicsPathItem : public QAbstractGraphicsShapeItem
{
public:
    QGraphicsPathItem(QGraphicsItem *parent = 0
#ifndef Q_QDOC
                      // obsolete argument
                      , QGraphicsScene *scene = 0
#endif
        );
    QGraphicsPathItem(const QPainterPath &path, QGraphicsItem *parent = 0
#ifndef Q_QDOC
                      // obsolete argument
                      , QGraphicsScene *scene = 0
#endif
        );
    ~QGraphicsPathItem();

    QPainterPath path() const;
    void setPath(const QPainterPath &path);

    QRectF boundingRect() const;
    QPainterPath shape() const;
    bool contains(const QPointF &point) const;

    void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget = 0);

    bool isObscuredBy(const QGraphicsItem *item) const;
    QPainterPath opaqueArea() const;

    enum { Type = 2 };
    int type() const;

protected:
    bool supportsExtension(Extension extension) const;
    void setExtension(Extension extension, const QVariant &variant);
    QVariant extension(const QVariant &variant) const;

private:
    Q_DISABLE_COPY(QGraphicsPathItem)
    Q_DECLARE_PRIVATE(QGraphicsPathItem)
};

class QGraphicsRectItemPrivate;
class Q_GUI_EXPORT QGraphicsRectItem : public QAbstractGraphicsShapeItem
{
public:
    QGraphicsRectItem(QGraphicsItem *parent = 0
#ifndef Q_QDOC
                      // obsolete argument
                      , QGraphicsScene *scene = 0
#endif
        );
    QGraphicsRectItem(const QRectF &rect, QGraphicsItem *parent = 0
#ifndef Q_QDOC
                      // obsolete argument
                      , QGraphicsScene *scene = 0
#endif
        );
    QGraphicsRectItem(qreal x, qreal y, qreal w, qreal h, QGraphicsItem *parent = 0
#ifndef Q_QDOC
                      // obsolete argument
                      , QGraphicsScene *scene = 0
#endif
        );
    ~QGraphicsRectItem();

    QRectF rect() const;
    void setRect(const QRectF &rect);
    inline void setRect(qreal x, qreal y, qreal w, qreal h);

    QRectF boundingRect() const;
    QPainterPath shape() const;
    bool contains(const QPointF &point) const;

    void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget = 0);

    bool isObscuredBy(const QGraphicsItem *item) const;
    QPainterPath opaqueArea() const;

    enum { Type = 3 };
    int type() const;

protected:
    bool supportsExtension(Extension extension) const;
    void setExtension(Extension extension, const QVariant &variant);
    QVariant extension(const QVariant &variant) const;

private:
    Q_DISABLE_COPY(QGraphicsRectItem)
    Q_DECLARE_PRIVATE(QGraphicsRectItem)
};

inline void QGraphicsRectItem::setRect(qreal ax, qreal ay, qreal w, qreal h)
{ setRect(QRectF(ax, ay, w, h)); }

class QGraphicsEllipseItemPrivate;
class Q_GUI_EXPORT QGraphicsEllipseItem : public QAbstractGraphicsShapeItem
{
public:
    QGraphicsEllipseItem(QGraphicsItem *parent = 0
#ifndef Q_QDOC
                         // obsolete argument
                         , QGraphicsScene *scene = 0
#endif
        );
    QGraphicsEllipseItem(const QRectF &rect, QGraphicsItem *parent = 0
#ifndef Q_QDOC
                         // obsolete argument
                         , QGraphicsScene *scene = 0
#endif
        );
    QGraphicsEllipseItem(qreal x, qreal y, qreal w, qreal h, QGraphicsItem *parent = 0
#ifndef Q_QDOC
                         // obsolete argument
                         , QGraphicsScene *scene = 0
#endif
        );
    ~QGraphicsEllipseItem();

    QRectF rect() const;
    void setRect(const QRectF &rect);
    inline void setRect(qreal x, qreal y, qreal w, qreal h);

    int startAngle() const;
    void setStartAngle(int angle);

    int spanAngle() const;
    void setSpanAngle(int angle);

    QRectF boundingRect() const;
    QPainterPath shape() const;
    bool contains(const QPointF &point) const;

    void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget = 0);

    bool isObscuredBy(const QGraphicsItem *item) const;
    QPainterPath opaqueArea() const;

    enum { Type = 4 };
    int type() const;

protected:
    bool supportsExtension(Extension extension) const;
    void setExtension(Extension extension, const QVariant &variant);
    QVariant extension(const QVariant &variant) const;

private:
    Q_DISABLE_COPY(QGraphicsEllipseItem)
    Q_DECLARE_PRIVATE(QGraphicsEllipseItem)
};

inline void QGraphicsEllipseItem::setRect(qreal ax, qreal ay, qreal w, qreal h)
{ setRect(QRectF(ax, ay, w, h)); }

class QGraphicsPolygonItemPrivate;
class Q_GUI_EXPORT QGraphicsPolygonItem : public QAbstractGraphicsShapeItem
{
public:
    QGraphicsPolygonItem(QGraphicsItem *parent = 0
#ifndef Q_QDOC
                         // obsolete argument
                         , QGraphicsScene *scene = 0
#endif
        );
    QGraphicsPolygonItem(const QPolygonF &polygon,
                         QGraphicsItem *parent = 0
#ifndef Q_QDOC
                         // obsolete argument
                         , QGraphicsScene *scene = 0
#endif
        );
    ~QGraphicsPolygonItem();

    QPolygonF polygon() const;
    void setPolygon(const QPolygonF &polygon);

    Qt::FillRule fillRule() const;
    void setFillRule(Qt::FillRule rule);

    QRectF boundingRect() const;
    QPainterPath shape() const;
    bool contains(const QPointF &point) const;

    void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget = 0);

    bool isObscuredBy(const QGraphicsItem *item) const;
    QPainterPath opaqueArea() const;

    enum { Type = 5 };
    int type() const;

protected:
    bool supportsExtension(Extension extension) const;
    void setExtension(Extension extension, const QVariant &variant);
    QVariant extension(const QVariant &variant) const;

private:
    Q_DISABLE_COPY(QGraphicsPolygonItem)
    Q_DECLARE_PRIVATE(QGraphicsPolygonItem)
};

class QGraphicsLineItemPrivate;
class Q_GUI_EXPORT QGraphicsLineItem : public QGraphicsItem
{
public:
    QGraphicsLineItem(QGraphicsItem *parent = 0
#ifndef Q_QDOC
                      // obsolete argument
                      , QGraphicsScene *scene = 0
#endif
        );
    QGraphicsLineItem(const QLineF &line, QGraphicsItem *parent = 0
#ifndef Q_QDOC
                      // obsolete argument
                      , QGraphicsScene *scene = 0