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#ifndef _CPPCANVAS_IMPLCANVAS_HXX
#define _CPPCANVAS_IMPLCANVAS_HXX

#include <com/sun/star/uno/Reference.hxx>
#include <com/sun/star/rendering/ViewState.hpp>
#include <cppcanvas/canvas.hxx>

#include <boost/optional.hpp>

namespace rtl
{
    class OUString;
}

namespace basegfx
{
    class B2DHomMatrix;
    class B2DPolyPolygon;
}

namespace com { namespace sun { namespace star { namespace rendering 
{
    class  XCanvas;
} } } }


/* Definition of ImplCanvas */

namespace cppcanvas
{

    namespace internal
    {

        class ImplCanvas : public virtual Canvas
        {
        public:
            ImplCanvas( const ::com::sun::star::uno::Reference< 
                        	::com::sun::star::rendering::XCanvas >& rCanvas );
            virtual ~ImplCanvas();

            virtual void                             setTransformation( const ::basegfx::B2DHomMatrix& rMatrix );
            virtual ::basegfx::B2DHomMatrix          getTransformation() const;
            
            virtual void                             setClip( const ::basegfx::B2DPolyPolygon& rClipPoly );
            virtual void                             setClip();
            virtual ::basegfx::B2DPolyPolygon const* getClip() const;
            
            virtual FontSharedPtr                    createFont( const ::rtl::OUString& rFontName, const double& rCellSize ) const;
            
            virtual ColorSharedPtr                   createColor() const;
            
            virtual CanvasSharedPtr                  clone() const;

            virtual void                             clear() const;

            virtual ::com::sun::star::uno::Reference< 
                ::com::sun::star::rendering::XCanvas > 		getUNOCanvas() const;

            virtual ::com::sun::star::rendering::ViewState	getViewState() const;

            // take compiler-provided default copy constructor
            //ImplCanvas(const ImplCanvas&);

        private:
            // default: disabled assignment
            ImplCanvas& operator=( const ImplCanvas& );

            mutable ::com::sun::star::rendering::ViewState									maViewState;
            boost::optional<basegfx::B2DPolyPolygon>                                        maClipPolyPolygon;
            const ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XCanvas > 	mxCanvas;
		};

	}
}

#endif /* _CPPCANVAS_IMPLCANVAS_HXX */
