Handle resetting OSD values in the shell so you don't need to take care of this in every l'n'f package

lookandfeel/contents/osd/Osd.qml

@@ -37,14 +37,6 @@ PlasmaCore.Dialog {
     // false for displaying the value as normal text
     property bool showingProgress: false
 
-    onVisibleChanged: {
-        // this is needed to prevent fading from "old" values when the OSD shows up
-        if (!visible) {
-            root.icon = "";
-            root.osdValue = 0;
-        }
-    }
-
     mainItem: Item {
         height: units.gridUnit * 15
         width: height

shell/osd.cpp

@@ -130,4 +130,8 @@ void Osd::showOsd()
 void Osd::hideOsd()
 {
     m_osdObject->rootObject()->setProperty("visible", false);
+
+    // this is needed to prevent fading from "old" values when the OSD shows up
+    m_osdObject->rootObject()->setProperty("icon", "");
+    m_osdObject->rootObject()->setProperty("osdValue", 0);
 }