OpacityMask on a map: how to keep touch working?

BasePar

Hello everybody,

I need to get qml map with a shape (in my example, a disc).
I use the "official" example from qt.
My code:

Map {
            id: map
            x: 106
            y: 390
            width: 300
            height: 300
            visible: false
            smooth: true
}

Image {
             id: mask
             source: "images/disque300px.png"
             //sourceSize: Qt.size(300, 300)
             smooth: true
             visible: false
            }

OpacityMask {
             anchors.fill: map
             source: map
             maskSource: mask
            }

The result is OK:
alt text

But the problem is that the map is no longer sensitive to "touch" (normal, its "visible" state is false)...
How can I solve this problem?

Thank you in advance for your response!