/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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 * This file incorporates work covered by the following license notice:
 *
 *   Licensed to the Apache Software Foundation (ASF) under one or more
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#ifndef INCLUDED_CPPCANVAS_SOURCE_WRAPPER_IMPLSPRITECANVAS_HXX
#define INCLUDED_CPPCANVAS_SOURCE_WRAPPER_IMPLSPRITECANVAS_HXX

#include <com/sun/star/rendering/XSpriteCanvas.hpp>
#include <basegfx/vector/b2dsize.hxx>
#include <basegfx/matrix/b2dhommatrix.hxx>
#include <cppcanvas/spritecanvas.hxx>
#include <implcanvas.hxx>

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

            virtual ~ImplSpriteCanvas();

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

            virtual bool                    updateScreen( bool bUpdateAll ) const override;

            virtual CustomSpriteSharedPtr   createCustomSprite( const ::basegfx::B2DSize& ) const override;

            virtual CanvasSharedPtr         clone() const override;

            virtual css::uno::Reference<
                css::rendering::XSpriteCanvas >    getUNOSpriteCanvas() const override;

            /** 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 );
                const ::basegfx::B2DHomMatrix& getTransformation() const {  return maTransformation; }

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

            typedef std::shared_ptr< TransformationArbiter > TransformationArbiterSharedPtr;

        private:
            ImplSpriteCanvas& operator=( const ImplSpriteCanvas& ) = delete;

            const css::uno::Reference< css::rendering::XSpriteCanvas > mxSpriteCanvas;
            TransformationArbiterSharedPtr                             mpTransformArbiter;
        };
    }
}

#endif // INCLUDED_CPPCANVAS_SOURCE_WRAPPER_IMPLSPRITECANVAS_HXX

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