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#ifndef _CPPCANVAS_IMPLSPRITECANVAS_HXX
#define _CPPCANVAS_IMPLSPRITECANVAS_HXX

#ifndef _COM_SUN_STAR_RENDERING_XSPRITECANVAS_HPP__
#include <com/sun/star/rendering/XSpriteCanvas.hpp>
#endif
#include <basegfx/vector/b2dsize.hxx>
#include <basegfx/matrix/b2dhommatrix.hxx>

#ifndef BOOST_SHARED_PTR_HPP_INCLUDED
#include <boost/shared_ptr.hpp>
#endif


#include <cppcanvas/spritecanvas.hxx>

#include <implbitmapcanvas.hxx>


namespace cppcanvas
{
    namespace internal
    {
        class ImplSpriteCanvas : public virtual SpriteCanvas, protected virtual ImplBitmapCanvas
        {
        public:
            ImplSpriteCanvas( const ::com::sun::star::uno::Reference< 
                              	::com::sun::star::rendering::XSpriteCanvas >& rCanvas );
            ImplSpriteCanvas(const ImplSpriteCanvas&);

            virtual ~ImplSpriteCanvas();

            virtual void 					setTransformation( const ::basegfx::B2DHomMatrix& rMatrix );

            virtual bool					updateScreen( bool bUpdateAll ) const;
        
            virtual CustomSpriteSharedPtr 	createCustomSprite( const ::basegfx::B2DSize& ) const;
            virtual SpriteSharedPtr 		createClonedSprite( const SpriteSharedPtr& ) const;

            SpriteSharedPtr					createSpriteFromBitmaps( 
                const ::com::sun::star::uno::Sequence< 
                	::com::sun::star::uno::Reference< 
                		::com::sun::star::rendering::XBitmap > >& 	animationBitmaps, 
                sal_Int8 													interpolationMode );

            virtual CanvasSharedPtr			clone() const;

            virtual ::com::sun::star::uno::Reference< 
                ::com::sun::star::rendering::XSpriteCanvas > 	getUNOSpriteCanvas() const;

            /** This class passes the view transformation
                to child sprites

                This helper class is necessary, because the
                ImplSpriteCanvas object cannot hand out shared ptrs of
                itself, but has somehow pass an object to child
                sprites those can query for the canvas' view transform.
             */
            class TransformationArbiter 
            {
            public:
                TransformationArbiter();

                void 						setTransformation( const ::basegfx::B2DHomMatrix& rViewTransform );
                ::basegfx::B2DHomMatrix  	getTransformation() const;

            private:
                ::basegfx::B2DHomMatrix		maTransformation;
            };

            typedef ::boost::shared_ptr< TransformationArbiter > TransformationArbiterSharedPtr;

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

            const ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XSpriteCanvas > 	mxSpriteCanvas;
            TransformationArbiterSharedPtr															mpTransformArbiter;
        };
    }
}

#endif /* _CPPCANVAS_IMPLSPRITECANVAS_HXX */
