Wrappe modular aufgebaut, Tests erfolgreich, Menüleiste und Werzeugleiste werden eingetragen (QT6 und QT5)- (Es fehlen noch Fachplugins, um zu prüfen, ob es auch wirklich in QGIS geht)

functions/ly_visibility_wrapper.py

@@ -0,0 +1,40 @@
+# sn_basis/functions/ly_visibility_wrapper.py
+
+def is_layer_visible(layer) -> bool:
+    if layer is None:
+        return False
+
+    visible = getattr(layer, "visible", None)
+    if visible is not None:
+        return bool(visible)
+
+    try:
+        is_visible = getattr(layer, "isVisible", None)
+        if callable(is_visible):
+            return bool(is_visible())
+    except Exception:
+        pass
+
+    return False
+
+
+def set_layer_visible(layer, visible: bool) -> bool:
+    if layer is None:
+        return False
+
+    try:
+        if hasattr(layer, "visible"):
+            layer.visible = bool(visible)
+            return True
+    except Exception:
+        pass
+
+    try:
+        node = getattr(layer, "treeLayer", lambda: None)()
+        if node and callable(getattr(node, "setItemVisibilityChecked", None)):
+            node.setItemVisibilityChecked(bool(visible))
+            return True
+    except Exception:
+        pass
+
+    return False