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#ifndef INCLUDED_DRAWINGLAYER_PRIMITIVE2D_DISCRETESHADOWPRIMITIVE2D_HXX
#define INCLUDED_DRAWINGLAYER_PRIMITIVE2D_DISCRETESHADOWPRIMITIVE2D_HXX

#include <drawinglayer/drawinglayerdllapi.h>

#include <drawinglayer/primitive2d/primitivetools2d.hxx>
#include <vcl/bitmapex.hxx>
#include <basegfx/matrix/b2dhommatrix.hxx>


// DiscreteShadowPrimitive2D class

namespace drawinglayer
{
    namespace primitive2d
    {
        /** DiscreteShadow data class

         */
        class DRAWINGLAYER_DLLPUBLIC DiscreteShadow
        {
        private:
            /// the original shadow BitmapEx in a special form
            BitmapEx                    maBitmapEx;

            /// buffered extracted parts of CombinedShadow for easier usage
            BitmapEx                    maTopLeft;
            BitmapEx                    maTop;
            BitmapEx                    maTopRight;
            BitmapEx                    maRight;
            BitmapEx                    maBottomRight;
            BitmapEx                    maBottom;
            BitmapEx                    maBottomLeft;
            BitmapEx                    maLeft;

        public:
            /// constructor
            explicit DiscreteShadow(const BitmapEx& rBitmapEx);

            /// data read access
            const BitmapEx& getBitmapEx() const { return maBitmapEx; }

            /// compare operator
            bool operator==(const DiscreteShadow& rCompare) const
            {
                return getBitmapEx() == rCompare.getBitmapEx();
            }

            /// helper accesses which create on-demand needed segments
            const BitmapEx& getTopLeft() const;
            const BitmapEx& getTop() const;
            const BitmapEx& getTopRight() const;
            const BitmapEx& getRight() const;
            const BitmapEx& getBottomRight() const;
            const BitmapEx& getBottom() const;
            const BitmapEx& getBottomLeft() const;
            const BitmapEx& getLeft() const;
        };

        /** DiscreteShadowPrimitive2D class

         */
        class DRAWINGLAYER_DLLPUBLIC DiscreteShadowPrimitive2D : public DiscreteMetricDependentPrimitive2D
        {
        private:
            // the object transformation of the rectangular object
            basegfx::B2DHomMatrix       maTransform;

            // the bitmap shadow data
            DiscreteShadow              maDiscreteShadow;

        protected:
            /// create local decomposition
            virtual Primitive2DSequence create2DDecomposition(const geometry::ViewInformation2D& rViewInformation) const override;

        public:
            /// constructor
            DiscreteShadowPrimitive2D(
                const basegfx::B2DHomMatrix& rTransform,
                const DiscreteShadow& rDiscreteShadow);

            /// data read access
            const basegfx::B2DHomMatrix& getTransform() const { return maTransform; }
            const DiscreteShadow& getDiscreteShadow() const { return maDiscreteShadow; }

            /// compare operator
            virtual bool operator==(const BasePrimitive2D& rPrimitive) const override;

            /// get range
            virtual basegfx::B2DRange getB2DRange(const geometry::ViewInformation2D& rViewInformation) const override;

            /// provide unique ID
            DeclPrimitive2DIDBlock()
        };
    } // end of namespace primitive2d
} // end of namespace drawinglayer



#endif // INCLUDED_DRAWINGLAYER_PRIMITIVE2D_DISCRETESHADOWPRIMITIVE2D_HXX

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