return correct sizeHint for scientific spin box

GUI/View/PropertyEditor/ScientificSpinBox.cpp

@@ -13,6 +13,7 @@
 //  ************************************************************************************************
 
 #include "GUI/View/PropertyEditor/ScientificSpinBox.h"
+#include <QDoubleSpinBox>
 #include <QLineEdit>
 #include <cmath>
 
@@ -45,6 +46,16 @@ ScientificSpinBox::ScientificSpinBox(QWidget* parent)
 
 ScientificSpinBox::~ScientificSpinBox() = default;
 
+QSize ScientificSpinBox::sizeHint() const
+{
+    // The following is somehow a hack to get a reasonable sizeHint. Implementation could/should be
+    // re-thought
+    QDoubleSpinBox d;
+    d.setRange(m_min, m_max);
+    d.setDecimals(m_decimals);
+    return d.sizeHint();
+}
+
 double ScientificSpinBox::value() const
 {
     return m_value;

GUI/View/PropertyEditor/ScientificSpinBox.h

@@ -25,6 +25,8 @@ public:
     ScientificSpinBox(QWidget* parent = nullptr);
     ~ScientificSpinBox() override;
 
+    QSize sizeHint() const override;
+
     double value() const;
     void setValue(double val);