Initial commit

lib/utils/position_from_build_context.dart

@@ -0,0 +1,25 @@
+// SPDX-FileCopyrightText: 2019-Present Christian Kußowski
+// SPDX-FileCopyrightText: 2019-Present Contributors to FluffyChat
+//
+// SPDX-License-Identifier: AGPL-3.0-or-later
+
+import 'package:flutter/widgets.dart';
+
+extension PositionFromBuildContext on BuildContext {
+  RelativeRect get position {
+    final overlay = Overlay.of(this).context.findRenderObject() as RenderBox;
+
+    final button = findRenderObject() as RenderBox;
+
+    return RelativeRect.fromRect(
+      Rect.fromPoints(
+        button.localToGlobal(const Offset(0, -65), ancestor: overlay),
+        button.localToGlobal(
+          button.size.bottomRight(Offset.zero) + const Offset(-50, 0),
+          ancestor: overlay,
+        ),
+      ),
+      Offset.zero & overlay.size,
+    );
+  }
+}