feat(main): implement def _unwrap_qvariant

scanslicer/main.py

@@ -19,3 +19,27 @@ from .ui_builders import ScanSlicerUiBuilderMixin
 
 
 # _unwrap_qvariant: function definition for ScanSlicer behavior.
+def _unwrap_qvariant(value):
+    unwrapped = value
+    for _ in range(4):
+        if hasattr(unwrapped, "variant"):
+            try:
+                candidate = unwrapped.variant()
+            except Exception:
+                candidate = unwrapped
+            if candidate is not unwrapped:
+                unwrapped = candidate
+                continue
+
+        if hasattr(unwrapped, "value"):
+            try:
+                candidate = unwrapped.value()
+            except TypeError:
+                candidate = unwrapped.value
+            except Exception:
+                candidate = unwrapped
+            if candidate is not unwrapped:
+                unwrapped = candidate
+                continue
+        break
+    return unwrapped