add splitter

GUI/View/SampleDesigner/SampleView.cpp

@@ -31,6 +31,7 @@
 #include <QDockWidget>
 #include <QMenu>
 #include <QMessageBox>
+#include <QSplitter>
 #include <QToolButton>
 #include <QWidgetAction>
 
@@ -57,16 +58,19 @@ SampleView::SampleView(QWidget* parent, ProjectDocument* document)
 
     //... Right block: sample editor and bottom panels
 
-    auto* vLayout = new QVBoxLayout;
-    hLayout->addLayout(vLayout);
+    QSplitter* vSplitter = new QSplitter;
+    vSplitter->setOrientation(Qt::Vertical);
+    hLayout->addWidget(vSplitter);
 
     auto* editor = new SampleEditor(this, document);
-    vLayout->addWidget(editor);
+    vSplitter->addWidget(editor);
 
     //... Below central widget: realspace and script panels
 
-    auto* hLayout2 = new QHBoxLayout;
-    vLayout->addLayout(hLayout2);
+    QWidget* bottomWidget = new QWidget;
+    vSplitter->addWidget(bottomWidget);
+
+    auto* hLayout2 = new QHBoxLayout(bottomWidget);
 
     m_realspacePanel = new RealspacePanel(this);
     hLayout2->addWidget(m_realspacePanel);