refs #304, centralized icons

* icons which can be rotated
* provide metadata
* integrated in CValueObjects
* added SVG support

src/blackmisc/avaltitude.cpp

@@ -9,6 +9,7 @@
 
 #include "avaltitude.h"
 #include "pqstring.h"
+#include "iconlist.h"
 
 using BlackMisc::PhysicalQuantities::CLength;
 using BlackMisc::PhysicalQuantities::CLengthUnit;
@@ -204,6 +205,14 @@ namespace BlackMisc
             *this = CAltitude(l, rd);
         }
 
+        /*
+         * Icon
+         */
+        CIcon CAltitude::toIcon() const
+        {
+            return BlackMisc::CIconList::iconForIndex(CIcons::GeoPosition);
+        }
+
         /*
          * Members
          */