[PQ] added static "parsedFromString"

src/blackcore/airspacemonitor.cpp

@@ -411,8 +411,7 @@ namespace BlackCore
             if (parser.matchesPart(1, "range") && parser.countParts() > 2)
             {
                 const QString r = parser.part(2);
-                CLength d;
+                const CLength d = CLength::parsedFromString(r);
-                d.parseFromString(r);
                 this->setMaxRange(d);
             }
         }

src/blackmisc/pq/physicalquantity.cpp

@@ -455,6 +455,14 @@ namespace BlackMisc
             *this = CPqString::parse<PQ>(value, CPqString::SeparatorQtDefault);
         }
 
+        template<class MU, class PQ>
+        PQ CPhysicalQuantity<MU, PQ>::parsedFromString(const QString &value, CPqString::SeparatorMode mode)
+        {
+            PQ pq;
+            pq.parseFromString(value, mode);
+            return pq;
+        }
+
         template <class MU, class PQ>
         CVariant CPhysicalQuantity<MU, PQ>::propertyByIndex(const CPropertyIndex &index) const
         {

src/blackmisc/pq/physicalquantity.h

@@ -276,6 +276,9 @@ namespace BlackMisc
             //! NULL PQ
             static const PQ &null();
 
+            //! Parsed from given string
+            static PQ parsedFromString(const QString &value, CPqString::SeparatorMode mode = CPqString::SeparatorBestGuess);
+
         protected:
             //! Constructor with double
             CPhysicalQuantity(double value, MU unit);