osd attached to triggering module position, per-screen filtering

modules/Osd.qml

@@ -13,7 +13,7 @@ PanelWindow {
     color: "transparent"
 
     property bool _winVisible: false
-    property bool _shown: M.OsdState.visible
+    property bool _shown: M.OsdState.visible && M.OsdState.screen === root.screen
 
     on_ShownChanged: {
         if (_shown) {
@@ -35,7 +35,10 @@ PanelWindow {
     anchors.left: true
 
     margins.top: 0
-    margins.left: Math.round((screen.width - implicitWidth) / 2)
+    margins.left: Math.max(0, Math.min(
+        Math.round(M.OsdState.itemX - implicitWidth / 2),
+        screen.width - implicitWidth
+    ))
 
     implicitWidth: 200
     implicitHeight: 48