xref: /aoo41x/main/drawinglayer/inc/drawinglayer/primitive2d/metafileprimitive2d.hxx (revision 4f506f19)

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#ifndef INCLUDED_DRAWINGLAYER_PRIMITIVE2D_METAFILEPRIMITIVE2D_HXX
#define INCLUDED_DRAWINGLAYER_PRIMITIVE2D_METAFILEPRIMITIVE2D_HXX

#include <drawinglayer/drawinglayerdllapi.h>
#include <drawinglayer/primitive2d/baseprimitive2d.hxx>
#include <basegfx/matrix/b2dhommatrix.hxx>
#include <vcl/gdimtf.hxx>

//////////////////////////////////////////////////////////////////////////////
// MetafilePrimitive2D class

namespace drawinglayer
{
	namespace primitive2d
	{
        /** MetafilePrimitive2D class

            This is the MetaFile representing primitive. It's geometry is defined
            by MetaFileTransform. The content (defined by MetaFile) will be scaled
            to the geometric definiton by using PrefMapMode and PrefSize of the
            Metafile.

            It has shown that this not always guarantees that all Metafile content
            is inside the geometric definition, but this primitive defines that this
            is the case to allow a getB2DRange implementation. If it cannot be
            guaranteed that the Metafile is inside the geometric definition, it should
            be embedded to a MaskPrimitive2D.

            This primitive has no decomposition yet, so when not supported by a renderer,
            it will not be visualized.

            In the future, a decomposition implementation would be appreciated and would
            have many advantages; Metafile would no longer have to be rendered by
            sub-systems and a standard way for converting Metafiles would exist.
         */
		class DRAWINGLAYER_DLLPUBLIC MetafilePrimitive2D : public BufferedDecompositionPrimitive2D
		{
		private:
            /// the geometry definition
			basegfx::B2DHomMatrix						maMetaFileTransform;

            /// the content definition
			GDIMetaFile									maMetaFile;

        protected:
			/// local decomposition.
			virtual Primitive2DSequence create2DDecomposition(const geometry::ViewInformation2D& rViewInformation) const;
		public:
            /// constructor
			MetafilePrimitive2D(
				const basegfx::B2DHomMatrix& rMetaFileTransform,
				const GDIMetaFile& rMetaFile);

			/// data read access
			const basegfx::B2DHomMatrix& getTransform() const { return maMetaFileTransform; }
			const GDIMetaFile& getMetaFile() const { return maMetaFile; }

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

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

			/// provide unique ID
			DeclPrimitrive2DIDBlock()
		};
	} // end of namespace primitive2d
} // end of namespace drawinglayer

//////////////////////////////////////////////////////////////////////////////

#endif //INCLUDED_DRAWINGLAYER_PRIMITIVE2D_METAFILEPRIMITIVE2D_HXX

//////////////////////////////////////////////////////////////////////////////
// eof