mv size setting (#902)

GUI/View/Canvas/ProjectedGraphsCanvas.cpp

@@ -30,9 +30,6 @@ ProjectedGraphsCanvas::ProjectedGraphsCanvas(QWidget* parent)
     , m_y_projection(new ProjectionsPlot(Qt::Vertical))
     , m_tab_widget(new QTabWidget)
 {
-    setSizePolicy(QSizePolicy::MinimumExpanding, QSizePolicy::MinimumExpanding);
-    setMinimumSize(400, 180);
-
     auto* layout = new QVBoxLayout(this);
     layout->setContentsMargins(0, 0, 0, 0);
     layout->setSpacing(0);

GUI/View/Plotter/ProjectionsPlot.h

@@ -35,6 +35,9 @@ public:
     void connectItems();
     void disconnectItems();
 
+    QSize sizeHint() const override { return {500, 200}; }
+    QSize minimumSizeHint() const override { return {400, 180}; }
+
 public slots:
     void onMarginsChanged(double left, double right);