How do I emit signal while clicking TableViewColumn?

[Mira13]

I would like to add a MouseArea or Button to a TableViewColumn to perform specific tasks. However, if I add one of the above type, it overrides the "click" event of TableViewColumn so that I lose row selection by click.

Here is an example code. The row is not switching when I click it in the area of the last column:

TreeView {
clip: true id: mapsTreeView
objectName: "mapsTreeView"
model: theModel

TableViewColumn {
    width: 100
    role: "name_role"
    title: "Map"
}
TableViewColumn {
    width: 50
    role: "description_role"
}
TableViewColumn {
    id: imageColumn
    width: 20
    role: "image_role"
    delegate: Item {
        MouseArea {
            anchors.fill: parent
            onClicked: {
                mapsTreeView.sigChangeState()
            }
        }
        Image {
            anchors.fill: parent
            width: 5
            source: "icon" + styleData.value + ".png"
        }
    }

}
signal sigChangeState()

}