Add output stream operator for COLOR4D

common/gal/color4d.cpp

@@ -73,7 +73,7 @@ COLOR4D::COLOR4D( EDA_COLOR_T aColor )
     }
 
 
-    wxString COLOR4D::ToWxString( long flags )
+    wxString COLOR4D::ToWxString( long flags ) const
     {
         wxColour c = ToColour();
         return c.GetAsString( flags );
@@ -256,6 +256,11 @@ const bool operator!=( const COLOR4D& lhs, const COLOR4D& rhs )
     return !( lhs == rhs );
 }
 
+std::ostream &operator<<( std::ostream &aStream, COLOR4D const &aColor )
+{
+    return aStream << aColor.ToWxString( wxC2S_CSS_SYNTAX );
+}
+
 }
 
 

include/gal/color4d.h

@@ -87,7 +87,7 @@ public:
      */
     bool SetFromWxString( const wxString& aColorString );
 
-    wxString ToWxString( long flags );
+    wxString ToWxString( long flags ) const;
 
     wxColour ToColour() const
     {
@@ -297,6 +297,9 @@ const bool operator==( const COLOR4D& lhs, const COLOR4D& rhs );
 /// @brief Not equality operator, are two colors not equal
 const bool operator!=( const COLOR4D& lhs, const COLOR4D& rhs );
 
+/// Syntactic sugar for outputting colors to strings
+std::ostream &operator<<( std::ostream &aStream, COLOR4D const &aColor );
+
 } // namespace KIGFX
 
 #endif /* COLOR4D_H_ */