update editVisual transparency through emptyAreas

containment/package/contents/ui/editmode/Visual.qml

@@ -159,6 +159,11 @@ Item{
                                                 "You can use mouse wheel to change background opacity of %0%").arg(Math.round(plasmoid.configuration.editBackgroundOpacity * 100))
 
         onWheel: {
+            processWheel(wheel);
+        }
+
+
+        function processWheel(wheel) {
             if (wheelIsBlocked) {
                 return;
             }
@@ -175,6 +180,15 @@ Item{
             }
         }
 
+        Connections {
+            target: root
+            onEmptyAreasWheel: {
+                if (root.editMode && !root.inConfigureAppletsMode) {
+                    editBackMouseArea.processWheel(wheel);
+                }
+            }
+        }
+
         //! A timer is needed in order to handle also touchpads that probably
         //! send too many signals very fast. This way the signals per sec are limited.
         //! The user needs to have a steady normal scroll in order to not

containment/package/contents/ui/layouts/EnvironmentActions.qml

@@ -98,6 +98,11 @@ Loader {
         }
 
         onWheel: {
+            if (root.scrollAction === Latte.Types.ScrollNone) {
+                root.emptyAreasWheel(wheel);
+                return;
+            }
+
             var delta = 0;
 
             if (wheel.angleDelta.y>=0 && wheel.angleDelta.x>=0) {

containment/package/contents/ui/main.qml

@@ -48,6 +48,7 @@ DragDrop.DropArea {
     //// BEGIN SIGNALS
     signal clearZoomSignal();
     signal destroyInternalViewSplitters();
+    signal emptyAreasWheel(QtObject wheel);
     signal separatorsUpdated();
     signal signalActivateEntryAtIndex(int entryIndex);
     signal signalNewInstanceForEntryAtIndex(int entryIndex);