Fill in missing zone properties.

Also fixes some bugs with hatch properties being available
on rule areas.

include/properties/pg_properties.h

@@ -41,7 +41,7 @@ wxPGProperty* PGPropertyFactory( const PROPERTY_BASE* aProperty, EDA_DRAW_FRAME*
 class PGPROPERTY_DISTANCE
 {
 public:
-    PGPROPERTY_DISTANCE( EDA_DRAW_FRAME* aParentFrame, const wxString& aRegEx,
+    PGPROPERTY_DISTANCE( EDA_DRAW_FRAME* aParentFrame,
                          ORIGIN_TRANSFORMS::COORD_TYPES_T aCoordType );
     virtual ~PGPROPERTY_DISTANCE() = 0;
 
@@ -53,11 +53,28 @@ protected:
 
 protected:
     EDA_DRAW_FRAME*                  m_parentFrame;
-    std::unique_ptr<REGEX_VALIDATOR> m_regExValidator;
     ORIGIN_TRANSFORMS::COORD_TYPES_T m_coordType;
 };
 
 
+class PGPROPERTY_AREA : public wxIntProperty
+{
+public:
+    PGPROPERTY_AREA( EDA_DRAW_FRAME* aParentFrame );
+
+protected:
+    bool StringToValue( wxVariant& aVariant, const wxString& aText,
+                        int aArgFlags = 0 ) const override;
+
+    wxString ValueToString( wxVariant& aVariant, int aArgFlags = 0 ) const override;
+
+    wxValidator* DoGetValidator() const override;
+
+protected:
+    EDA_DRAW_FRAME* m_parentFrame;
+};
+
+
 class PGPROPERTY_SIZE : public wxUIntProperty, public PGPROPERTY_DISTANCE
 {
 public:

include/properties/property.h

@@ -55,6 +55,7 @@ enum PROPERTY_DISPLAY
 {
     PT_DEFAULT,    ///< Default property for a given type
     PT_SIZE,       ///< Size expressed in distance units (mm/inch)
+    PT_AREA,       ///< Area expressed in distance units-squared (mm/inch)
     PT_COORD,      ///< Coordinate expressed in distance units (mm/inch)
     PT_DEGREE,     ///< Angle expressed in degrees
     PT_DECIDEGREE  ///< Angle expressed in decidegrees