Keep the notification centre below the bar

docs/widgets.md

@@ -55,7 +55,8 @@ accent colour. The Wallpaper tile opens `blob.displays`, the Theme tile opens
 
 ## Notification centre
 
-`blob.notification-center` lists the notification history, newest first. A
+`blob.notification-center` lists the notification history, newest first. It
+opens at the top right, just below the bar rather than over it. A
 toast that expires unseen moves into history; a toast you close or click is
 deleted instead, so the centre only holds what you missed. The x on an entry
 removes it through `blob-shell notifications remove <file>`, the bell button

shell/plugins/notification-center/NotificationCenter.qml

@@ -20,6 +20,12 @@ Item {
   property bool doNotDisturb: false
   readonly property bool empty: root.entries.length === 0
 
+  readonly property int barInset: {
+    var bar = root.shell ? root.shell.bar : null
+    if (!bar || bar.barHidden === true) return 0
+    return Math.max(0, bar.barSize || 0)
+  }
+
   function open(payloadJson) {
     root.opened = true
     root.refresh()
@@ -114,7 +120,7 @@ Item {
     Card {
       anchors.top: parent.top
       anchors.right: parent.right
-      anchors.topMargin: Style.spaceReal(10)
+      anchors.topMargin: Style.spaceReal(10) + root.barInset
       anchors.rightMargin: Style.spaceReal(10)
       implicitWidth: Style.spaceReal(440)
       implicitHeight: Style.spaceReal(420)