qgraphicsitem.h

奇趣公司比较新的qt/emd版本

#endif
        );
    QGraphicsLineItem(qreal x1, qreal y1, qreal x2, qreal y2, QGraphicsItem *parent = 0
#ifndef Q_QDOC
                      // obsolete argument
                      , QGraphicsScene *scene = 0
#endif
        );
    ~QGraphicsLineItem();

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

    QLineF line() const;
    void setLine(const QLineF &line);
    inline void setLine(qreal x1, qreal y1, qreal x2, qreal y2)
    { setLine(QLineF(x1, y1, x2, y2)); }

    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 = 6 };
    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(QGraphicsLineItem)
    Q_DECLARE_PRIVATE(QGraphicsLineItem)
};

class QGraphicsPixmapItemPrivate;
class Q_GUI_EXPORT QGraphicsPixmapItem : public QGraphicsItem
{
public:
    enum ShapeMode {
        MaskShape,
        BoundingRectShape,
        HeuristicMaskShape
    };

    QGraphicsPixmapItem(QGraphicsItem *parent = 0
#ifndef Q_QDOC
                        // obsolete argument
                        , QGraphicsScene *scene = 0
#endif
        );
    QGraphicsPixmapItem(const QPixmap &pixmap, QGraphicsItem *parent = 0
#ifndef Q_QDOC
                        // obsolete argument
                        , QGraphicsScene *scene = 0
#endif
        );
    ~QGraphicsPixmapItem();

    QPixmap pixmap() const;
    void setPixmap(const QPixmap &pixmap);

    Qt::TransformationMode transformationMode() const;
    void setTransformationMode(Qt::TransformationMode mode);

    QPointF offset() const;
    void setOffset(const QPointF &offset);
    inline void setOffset(qreal x, qreal y);

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

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

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

    enum { Type = 7 };
    int type() const;

    ShapeMode shapeMode() const;
    void setShapeMode(ShapeMode mode);

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

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

inline void QGraphicsPixmapItem::setOffset(qreal ax, qreal ay)
{ setOffset(QPointF(ax, ay)); }

class QGraphicsTextItemPrivate;
class QTextDocument;
class QTextCursor;
class Q_GUI_EXPORT QGraphicsTextItem : public QObject, public QGraphicsItem
{
    Q_OBJECT
    QDOC_PROPERTY(bool openExternalLinks READ openExternalLinks WRITE setOpenExternalLinks)
    QDOC_PROPERTY(QTextCursor textCursor READ textCursor WRITE setTextCursor)

public:
    QGraphicsTextItem(QGraphicsItem *parent = 0
#ifndef Q_QDOC
                      // obsolete argument
                      , QGraphicsScene *scene = 0
#endif
        );
    QGraphicsTextItem(const QString &text, QGraphicsItem *parent = 0
#ifndef Q_QDOC
                      // obsolete argument
                      , QGraphicsScene *scene = 0
#endif
        );
    ~QGraphicsTextItem();

    QString toHtml() const;
    void setHtml(const QString &html);

    QString toPlainText() const;
    void setPlainText(const QString &text);

    QFont font() const;
    void setFont(const QFont &font);

    void setDefaultTextColor(const QColor &c);
    QColor defaultTextColor() const;

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

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

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

    enum { Type = 8 };
    int type() const;

    void setTextWidth(qreal width);
    qreal textWidth() const;

    void adjustSize();

    void setDocument(QTextDocument *document);
    QTextDocument *document() const;

    void setTextInteractionFlags(Qt::TextInteractionFlags flags);
    Qt::TextInteractionFlags textInteractionFlags() const;

    void setOpenExternalLinks(bool open);
    bool openExternalLinks() const;

    void setTextCursor(const QTextCursor &cursor);
    QTextCursor textCursor() const;

Q_SIGNALS:
    void linkActivated(const QString &);
    void linkHovered(const QString &);

protected:
    bool sceneEvent(QEvent *event);
    void mousePressEvent(QGraphicsSceneMouseEvent *event);
    void mouseMoveEvent(QGraphicsSceneMouseEvent *event);
    void mouseReleaseEvent(QGraphicsSceneMouseEvent *event);
    void mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event);
    void contextMenuEvent(QGraphicsSceneContextMenuEvent *event);
    void keyPressEvent(QKeyEvent *event);
    void keyReleaseEvent(QKeyEvent *event);
    void focusInEvent(QFocusEvent *event);
    void focusOutEvent(QFocusEvent *event);
    void dragEnterEvent(QGraphicsSceneDragDropEvent *event);
    void dragLeaveEvent(QGraphicsSceneDragDropEvent *event);
    void dragMoveEvent(QGraphicsSceneDragDropEvent *event);
    void dropEvent(QGraphicsSceneDragDropEvent *event);
    void inputMethodEvent(QInputMethodEvent *event);
    void hoverEnterEvent(QGraphicsSceneHoverEvent *event);
    void hoverMoveEvent(QGraphicsSceneHoverEvent *event);
    void hoverLeaveEvent(QGraphicsSceneHoverEvent *event);

    QVariant inputMethodQuery(Qt::InputMethodQuery query) const;

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

private:
    Q_DISABLE_COPY(QGraphicsTextItem)
    Q_PRIVATE_SLOT(dd, void _q_updateBoundingRect(const QSizeF &))
    Q_PRIVATE_SLOT(dd, void _q_update(QRectF))
    Q_PRIVATE_SLOT(dd, void _q_ensureVisible(QRectF))
    QGraphicsTextItemPrivate *dd;
    friend class QGraphicsTextItemPrivate;
};

class QGraphicsSimpleTextItemPrivate;
class Q_GUI_EXPORT QGraphicsSimpleTextItem : public QAbstractGraphicsShapeItem
{
public:
    QGraphicsSimpleTextItem(QGraphicsItem *parent = 0
#ifndef Q_QDOC
                            // obsolete argument
                            , QGraphicsScene *scene = 0
#endif
        );
    QGraphicsSimpleTextItem(const QString &text, QGraphicsItem *parent = 0
#ifndef Q_QDOC
                            // obsolete argument
                            , QGraphicsScene *scene = 0
#endif
        );
    ~QGraphicsSimpleTextItem();

    void setText(const QString &text);
    QString text() const;

    void setFont(const QFont &font);
    QFont font() const;

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

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

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

    enum { Type = 9 };
    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(QGraphicsSimpleTextItem)
    Q_DECLARE_PRIVATE(QGraphicsSimpleTextItem)
};

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

    void addToGroup(QGraphicsItem *item);
    void removeFromGroup(QGraphicsItem *item);

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

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

    enum { Type = 10 };
    int type() const;

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

template <class T> inline T qgraphicsitem_cast(QGraphicsItem *item)
{
    return int(static_cast<T>(0)->Type) == int(QGraphicsItem::Type)
        || (item && int(static_cast<T>(0)->Type) == item->type()) ? static_cast<T>(item) : 0;
}

template <class T> inline T qgraphicsitem_cast(const QGraphicsItem *item)
{
    return int(static_cast<T>(0)->Type) == int(QGraphicsItem::Type)
        || (item && int(static_cast<T>(0)->Type) == item->type()) ? static_cast<T>(item) : 0;
}

#ifndef QT_NO_DEBUG_STREAM
Q_GUI_EXPORT QDebug operator<<(QDebug debug, QGraphicsItem *item);
#endif

QT_END_HEADER

#endif

#endif // QT_NO_GRAPHICSVIEW