implement popupPosition

call it only by setting a visualParent, don't expose it to qml for now

qmlpackages/desktop/contents/ui/CompactApplet.qml

@@ -44,12 +44,7 @@ Item {
         //windowFlags: Qt.Popup
         color: Qt.rgba(0,0,0,0)
         visible: plasmoid.expanded
-        onVisibleChanged: {
+        visualParent: root
-            if (!visible) {
-                plasmoid.expanded = false
-            }
-        }
-
         mainItem: Rectangle {
             id: appletParent
             radius: 5
@@ -58,5 +53,16 @@ Item {
             onWidthChanged: applet.width = width
             onHeightChanged: applet.height = height
         }
+        
+        onActiveWindowChanged: {
+            if (!activeWindow) {
+                plasmoid.expanded = false
+            }
+        }
+        onVisibleChanged: {
+            if (!visible) {
+                plasmoid.expanded = false
+            }
+        }
     }
 }