add btn to show a single layer in real space view

GUI/View/SampleDesigner/LayerForm.cpp

@@ -61,6 +61,11 @@ LayerForm::LayerForm(QWidget* parent, LayerItem* layer, SampleEditorController*
             &SampleEditorController::onStartingToMoveLayer);
     connect(moveButton, &WidgetMoverButton::finishedMoving, ec,
             &SampleEditorController::onStoppedToMoveLayer);
+
+    auto* showInRealSpaceAction = ActionFactory::createShowInRealSpaceAction(
+        this, "layer", [=] { m_ec->requestViewInRealSpace(layer); });
+
+    m_collapser->addAction(showInRealSpaceAction);
     m_collapser->addAction(chooseColorAction);
     m_collapser->addAction(m_removeAction);
     m_collapser->addWidget(moveButton);