add overlay

dots/.config/quickshell/ii/modules/common/Persistent.qml

@@ -79,6 +79,22 @@ Singleton {
                 property bool inhibit: false
             }
 
+            property JsonObject overlay: JsonObject {
+                property list<string> open: ["crosshair"]
+                property JsonObject crosshair: JsonObject {
+                    property bool pinned: false
+                    property bool clickthrough: true
+                    property real x: 100
+                    property real y: 100
+                }
+                property JsonObject volumeMixer: JsonObject {
+                    property bool pinned: false
+                    property bool clickthrough: false
+                    property real x: 55
+                    property real y: 188
+                }
+            }
+
             property JsonObject timer: JsonObject {
                 property JsonObject pomodoro: JsonObject {
                     property bool running: false

dots/.config/quickshell/ii/modules/common/widgets/widgetCanvas/AbstractOverlayWidget.qml

@@ -0,0 +1,13 @@
+import QtQuick
+import Quickshell
+import qs.modules.common
+
+/*
+ * Abstract widgets for an overlay. Doesn't contain any visuals.
+ */
+AbstractWidget {
+    id: root
+
+    property bool pinned: false // Whether to stay visible when the overlay is dismissed
+    property bool clickthrough: true // When pinned, whether to allow clicks go through
+}

dots/.config/quickshell/ii/modules/common/widgets/widgetCanvas/WidgetCanvas.qml

@@ -1,6 +1,6 @@
 import QtQuick
 
-Item {
+MouseArea {
     id: root
 
     // uh this is stupid turns out we don't need anything here