enable hover effect for Plasma Style

containment/package/contents/ui/applet/indicator/Manager.qml

@@ -55,6 +55,7 @@ Item{
 
     readonly property bool isActive: appletItem.isActive
     readonly property bool isGroup: false
+    readonly property bool isHovered: appletMouseArea.containsMouse
     readonly property bool isMinimized: false
     readonly property bool inAttention: false
     readonly property bool inRemoving: false

liblatte2/qml/indicators/PlasmaIndicator.qml

@@ -99,6 +99,15 @@ PlasmaCore.FrameSvgItem {
                 basePrefix: ""
             }
         },
+        State {
+            name: "hovered"
+            when: parentItem.isHovered && frame.hasElementPrefix("hover")
+
+            PropertyChanges {
+                target: frame
+                basePrefix: "hover"
+            }
+        },
         State {
             name: "attention"
             when: parentItem.inAttention

plasmoid/package/contents/ui/task/indicator/Manager.qml

@@ -39,6 +39,7 @@ Item {
     readonly property bool isActive: taskItem.hasActive || (root.showPreviews && (taskItem.isWindow || taskItem.isGroupParent)
                                                             && windowsPreviewDlg.activeItem && (windowsPreviewDlg.activeItem === taskItem))
     readonly property bool isGroup: taskItem.isGroupParent
+    readonly property bool isHovered: taskItem.containsMouse
     readonly property bool isMinimized: taskItem.isMinimized
     readonly property bool inAttention: taskItem.inAttention
     readonly property bool inRemoving: taskItem.inRemoveStage