LP-567 don't create a QSpinBox each time BrowserItemDelegate::sizeHint() is called

Author: filnet

ground/gcs/src/plugins/uavobjectbrowser/browseritemdelegate.cpp

@@ -31,7 +31,9 @@
 
 BrowserItemDelegate::BrowserItemDelegate(QObject *parent) :
     QStyledItemDelegate(parent)
-{}
+{
+    _sizeHint = QSpinBox().sizeHint();
+}
 
 QWidget *BrowserItemDelegate::createEditor(QWidget *parent,
                                            const QStyleOptionViewItem & option,
@@ -75,5 +77,5 @@ QSize BrowserItemDelegate::sizeHint(const QStyleOptionViewItem & option, const Q
 {
     Q_UNUSED(option);
     Q_UNUSED(index);
-    return QSpinBox().sizeHint();
+    return _sizeHint;
 }

ground/gcs/src/plugins/uavobjectbrowser/browseritemdelegate.h

@@ -47,6 +47,9 @@ class BrowserItemDelegate : public QStyledItemDelegate {
                               const QStyleOptionViewItem &option, const QModelIndex &index) const;
     QSize sizeHint(const QStyleOptionViewItem & option,
                    const QModelIndex &index) const;
+
+private:
+    QSize _sizeHint;
 };
 
 #endif // BROWSERITEMDELEGATE_H