Detect movement inside an Item
I have a ComboBox-like element, which has a drop down menu. The drop down menu is created as a child of the main window, with coordinates of my element. When the element moves and drop-down is currently open, the position of the drop-down menu is not updated. I'd like to close it in this case.
So how do I detect movement of my QML element? It can be due to scrolling (when the element is on a Flickable) or adding/removing other children in a Row, Column, etc.
If you have any other idea to make a drop-down menu (rather than creating it as a child of top-level Item), it's also appreciated.
Every property in QML as onChanged<PropertyName> signal handler. See whether this can help you.
So which property do you suggest that I observe?
What I need is actually to detect changes in the data returned by myItem.mapToItem(mainWindow.contentItem, 0, 0).
I could periodically call this function in a QTimer and compare returned objects, but that's a really ugly solution. Better one would be to call mapToItem() in a signal handler.