Work around MyGUI bug in a less destructive way

components/lua_ui/widget.cpp

@@ -92,15 +92,21 @@ namespace LuaUi
             w->widget()->detachFromWidget();
     }
 
+    void WidgetExtension::updateVisible()
+    {
+        // workaround for MyGUI bug
+        // parent visibility doesn't affect added children
+        MyGUI::Widget* widget = this->widget();
+        MyGUI::Widget* parent = widget->getParent();
+        bool inheritedVisible = widget->getVisible() && (parent == nullptr || parent->getInheritedVisible());
+        widget->setVisible(inheritedVisible);
+    }
+
     void WidgetExtension::attach(WidgetExtension* ext)
     {
         ext->mParent = this;
         ext->mTemplateChild = false;
         ext->widget()->attachToWidget(mSlot->widget());
-        // workaround for MyGUI bug
-        // parent visibility doesn't affect added children
-        ext->widget()->setVisible(!ext->widget()->getVisible());
-        ext->widget()->setVisible(!ext->widget()->getVisible());
     }
 
     void WidgetExtension::attachTemplate(WidgetExtension* ext)
@@ -108,10 +114,6 @@ namespace LuaUi
         ext->mParent = this;
         ext->mTemplateChild = true;
         ext->widget()->attachToWidget(widget());
-        // workaround for MyGUI bug
-        // parent visibility doesn't affect added children
-        ext->widget()->setVisible(!ext->widget()->getVisible());
-        ext->widget()->setVisible(!ext->widget()->getVisible());
     }
 
     WidgetExtension* WidgetExtension::findDeep(std::string_view flagName)
@@ -256,6 +258,8 @@ namespace LuaUi
 
     void WidgetExtension::updateCoord()
     {
+        updateVisible();
+
         MyGUI::IntCoord oldCoord = mWidget->getCoord();
         MyGUI::IntCoord newCoord = calculateCoord();
 

components/lua_ui/widget.hpp

@@ -173,6 +173,8 @@ namespace LuaUi
         void focusLoss(MyGUI::Widget*, MyGUI::Widget*);
 
         std::optional<std::function<void(WidgetExtension*, MyGUI::IntCoord)>> mOnCoordChange;
+
+        void updateVisible();
     };
 
     class LuaWidget : public MyGUI::Widget, public WidgetExtension