1 files changed, 39 insertions, 0 deletions
diff --git a/js/ui/locatePointer.js b/js/ui/locatePointer.js
new file mode 100644
index 0000000..6ae2941
--- /dev/null
+++ b/js/ui/locatePointer.js
@@ -0,0 +1,39 @@
+// -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*-
+/* exported LocatePointer */
+
+const { Gio } = imports.gi;
+const Ripples = imports.ui.ripples;
+const Main = imports.ui.main;
+
+const LOCATE_POINTER_KEY = "locate-pointer";
+const LOCATE_POINTER_SCHEMA = "org.gnome.desktop.interface";
+
+var LocatePointer = class {
+    constructor() {
+        this._settings = new Gio.Settings({ schema_id: LOCATE_POINTER_SCHEMA });
+        this._settings.connect(`changed::${LOCATE_POINTER_KEY}`, () => this._syncEnabled());
+        this._syncEnabled();
+    }
+
+    _syncEnabled() {
+        let enabled = this._settings.get_boolean(LOCATE_POINTER_KEY);
+        if (enabled == !!this._ripples)
+            return;
+
+        if (enabled) {
+            this._ripples = new Ripples.Ripples(0.5, 0.5, 'ripple-pointer-location');
+            this._ripples.addTo(Main.uiGroup);
+        } else {
+            this._ripples.destroy();
+            this._ripples = null;
+        }
+    }
+
+    show() {
+        if (!this._ripples)
+            return;
+
+        let [x, y] = global.get_pointer();
+        this._ripples.playAnimation(x, y);
+    }
+};