focusInEvent and dragEnterEvent in QML for a custom generated type

[tuxier]

Hello,

I defined a new type polygon. Some functions from polygon.cpp is below:

Polygon::Polygon(QDeclarativeItem *parent)
    : QDeclarativeItem(parent)
{
    // need to disable this flag to draw inside a QDeclarativeItem
    setFlag(QDeclarativeItem::ItemHasNoContents, false);
    setFlags(ItemIsSelectable|ItemIsMovable|ItemIsFocusable);
    setAcceptDrops(true);
    setFlag(ItemSendsGeometryChanges);
    setCacheMode(DeviceCoordinateCache);

    setZValue(-1);

}

void Polygon::dragEnterEvent(QGraphicsSceneDragDropEvent *event){
    event->acceptProposedAction();

    qDebug("drag");
    update();
    QDeclarativeItem::dragEnterEvent(event);
}
void Polygon::focusInEvent ( QFocusEvent * event ){
    cout<<"focusin"<<endl;
    update();

    QDeclarativeItem::focusInEvent(event);
}

QRectF Polygon::boundingRect() const{

    QVector<QPointF> vPnt=listToVector(m_vertices);
    return QPolygonF(vPnt).boundingRect();

}

QPainterPath Polygon::shape () const
{
    QPainterPath path;
    QVector<QPointF> vPnt=listToVector(m_vertices);
    path.addPolygon(QPolygonF(vPnt));
return path;
}



void Polygon::paint(QPainter *painter, const QStyleOptionGraphicsItem *, QWidget *)
{
    QPen pen(m_color, 2);
    painter->setPen(pen);
    painter->setRenderHints(QPainter::Antialiasing, true);
   

QVector<QPointF> vPnt=listToVector(m_vertices);
    painter->setBrush(QBrush(m_color,Qt::SolidPattern));
    painter-> drawPolygon(QPolygonF(vPnt),Qt::OddEvenFill);



}

My QML file is here:

import MyTypes 1.0
import QtQuick 1.0
import Qt 4.7

 Item {
     id:container
     width: 300; height: 200

     Polygon {
         id: aPolygon
         anchors.centerIn: parent
         width: 100; height: 100
         name: "A simple polygon"
         color: "blue"
         vertices:[

         Point{x:20.0; y:40.0},
         Point{x:40.0; y:40.0},
         Point{x:40.0; y:20.0},
         Point{x:20.0; y:20.0}
         ]

     }
     

     Text {

         anchors { bottom: parent.bottom; horizontalCenter: parent.horizontalCenter; bottomMargin: 20 }
         text: aPolygon.name
     }
 }

I override paint, focusInEvent, dragEnterEvent, shape, boundingRectangle functions as you can see above, but only paint works as expected. I set flags in constructor too.

When i run the application, I can see polygons those i declared in the QML file, but how to be notified when the polygon is focused in or dragged into it? I can not see cout result on console. What to do in QML side or C++ side?
Thanks for any idea.