Questions about QGraphicsItems

[vycke]

I was able to put a "label" on a QGraphicPixmapItem by doing the following:

class DeviceItem: public QGraphicsPixmapItem
{
public
DeviceItem(DevData* data, QMenu *contextMenu, QGraphicsItem *parent = 0);
 
private:
QGraphicsSimpleTextItem* m_pText;
};

class DeviceItem: public QGraphicsPixmapItem
{
public
DeviceItem(DevData* data, QMenu *contextMenu, QGraphicsItem *parent = 0);

private:
QGraphicsSimpleTextItem* m_pText;
};

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and

DeviceItem::DeviceItem(DevData* data, QMenu* contextMenu, QGraphicsItem* parent) :
                     QGraphicsPixmapItem(QPixmap(data->getIcon()), parent), m_pText(NULL), m_Menu(contextMenu)
{
   setShapeMode(QGraphicsPixmapItem::BoundingRectShape);
   setFlag(QGraphicsItem::ItemIsMovable, true);
   setFlag(QGraphicsItem::ItemIsSelectable, true);
 
   m_pText = new QGraphicsSimpleTextItem(data->getName(), this);
   QRect rect = this->pixmap().rect();
   QRectF rectF = m_pText->boundingRect();
   int x = (rect.width()/2) - (rectF.width()/2);
   m_pText->setPos(x, rect.bottom());
}

DeviceItem::DeviceItem(DevData* data, QMenu* contextMenu, QGraphicsItem* parent) :
                     QGraphicsPixmapItem(QPixmap(data->getIcon()), parent), m_pText(NULL), m_Menu(contextMenu)
{
   setShapeMode(QGraphicsPixmapItem::BoundingRectShape);
   setFlag(QGraphicsItem::ItemIsMovable, true);
   setFlag(QGraphicsItem::ItemIsSelectable, true);

   m_pText = new QGraphicsSimpleTextItem(data->getName(), this);
   QRect rect = this->pixmap().rect();
   QRectF rectF = m_pText->boundingRect();
   int x = (rect.width()/2) - (rectF.width()/2);
   m_pText->setPos(x, rect.bottom());
}

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This puts the "label" centered underneath the pixmap. (As for arrow, that's the code to keep the items connected by the lines)

Vycke