Hi,

I am trying to add some custom QGraphicsItems in a QGraphicsScene on mouse click and at mouse cursor coordinates. But the items are not added at the same coordinates as the mouse cursor's.

Qt Code: 
  1. renderArea::renderArea(QWidget *parent):
  2.             QGraphicsView(parent)
  3.     {
  4.         scene = new QGraphicsScene(this);
  5.         scene->setItemIndexMethod(QGraphicsScene::NoIndex);
  6.         scene->setSceneRect(0, 0, 850, 480);
  7.         setScene(scene);
  8.         setCacheMode(CacheBackground);
  9.         setViewportUpdateMode(BoundingRectViewportUpdate);
  10.         setRenderHint(QPainter::Antialiasing);
  11.         setTransformationAnchor(AnchorUnderMouse);
  12.         scale(qreal(1.0), qreal(1.0));
  13.         setMinimumSize(400, 400);
  14.     }
  15.  
  16.     void renderArea::mousePressEvent(QMouseEvent *event)
  17.     {
  18.         QPoint p = event->pos();
  19.  
  20.     updateList(p);
  21.     }
  22.  
  23.     void renderArea::updateList(const QPoint &p)
  24.     {
  25.         Point point;
  26.         point.point = p;
  27.         point.isSelected = false;
  28.         list.append(point);
  29.         if (list.size() > 1)
  30.             updateClothoid(list[list.size()-2].point, list[list.size()-1].point);
  31.     }
  32.  
  33.     void renderArea::updateClothoid(const QPoint &p1, const QPoint &p2)
  34.     {
  35.         Clothoid *temp = new Clothoid(p1, p2);
  36.  
  37.         clothoids.append(temp);
  38.  
  39.         scene->addItem(temp);
  40.     }
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renderArea being the QGraphicsView and Clothoids the custom QGraphicsItem

Qt Code: 
  1. Clothoid::Clothoid(QPoint startPoint, QPoint endPoint)
  2.     {
  3.         sPoint = startPoint;
  4.         ePoint = endPoint;
  5.         startCurvature = 0.0;
  6.         endCurvature = 0.0;
  7.         clothoidLength = sqrt(pow(endPoint.x() - startPoint.x(),2) +
  8.                               pow(endPoint.y() - startPoint.y(),2));
  9.     }    
  10.  
  11.     QRectF Clothoid::boundingRect() const
  12.         {
  13.             qreal penWidth = 1;
  14.  
  15.             if ((sPoint.x() &lt ePoint.x()) && (sPoint.y() &lt ePoint.y()))
  16.                 return QRectF(sPoint.x(), sPoint.y(), ePoint.x() - sPoint.x(), ePoint.y()-sPoint.y())
  17.                 .normalized()
  18.                 .adjusted(-penWidth, -penWidth, penWidth, penWidth);
  19.  
  20.             if ((sPoint.x() &lt ePoint.x()) && (sPoint.y() > ePoint.y()))
  21.                 return QRectF(sPoint.x(), ePoint.y(), ePoint.x() - sPoint.x(), sPoint.y() - ePoint.y())
  22.                 .normalized()
  23.                 .adjusted(-penWidth, -penWidth, penWidth, penWidth);
  24.  
  25.             if ((sPoint.x() > ePoint.x()) && (sPoint.y() &lt ePoint.y()))
  26.                 return QRectF(ePoint.x(), sPoint.y(), sPoint.x() - ePoint.x(), ePoint.y()-sPoint.y())
  27.                 .normalized()
  28.                 .adjusted(-penWidth, -penWidth, penWidth, penWidth);
  29.  
  30.             if ((sPoint.x() > ePoint.x()) && (sPoint.y() > ePoint.y()))
  31.                 return QRectF(ePoint.x(), ePoint.y(), sPoint.x() - ePoint.x(), sPoint.y() - ePoint.y())
  32.                 .normalized()
  33.                 .adjusted(-penWidth, -penWidth, penWidth, penWidth);
  34.  
  35.             return QRectF();
  36.  
  37.         }
  38.  
  39.         void Clothoid::paint(QPainter *painter, const QStyleOptionGraphicsItem *, QWidget *)
  40.         {
  41.             QLineF line(sPoint, ePoint);
  42.  
  43.             // Draw the line itself
  44.             painter->setPen(QPen(Qt::black, 1, Qt::SolidLine, Qt::RoundCap, Qt::RoundJoin));
  45.             painter->drawLine(line);
  46.         }
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I am guessing that the coordinates to which I am inserting the items belong to the GraphicsView and not the scene as in my application the scene doesn't cover the entire view. But how could I get the coordinates of the scene in my case?