AOO410/main/drawinglayer/inc/drawinglayer/primitive2d/maskprimitive2d.hxx

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#ifndef INCLUDED_DRAWINGLAYER_PRIMITIVE2D_MASKPRIMITIVE2D_HXX
#define INCLUDED_DRAWINGLAYER_PRIMITIVE2D_MASKPRIMITIVE2D_HXX

#include <drawinglayer/drawinglayerdllapi.h>
#include <drawinglayer/primitive2d/groupprimitive2d.hxx>
#include <basegfx/polygon/b2dpolypolygon.hxx>

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

namespace drawinglayer
{
	namespace primitive2d
	{
        /** MaskPrimitive2D class

            This is the central masking primitive. It's a grouping
            primitive and contains a PolyPolygon which defines the visible
            area. Only visualisation parts of the Child primitive sequence
            inside of the mask PolyPolygon is defined to be visible.

            This primitive should be handled by a renderer. If it is not handled,
            it decomposes to it's Child content, and thus the visualisation would
            contaiun no clips.

            The geometrc range of this primitive is completely defined by the Mask 
            PolyPolygon since by definition nothing outside of the mask is visible.
         */
		class DRAWINGLAYER_DLLPUBLIC MaskPrimitive2D : public GroupPrimitive2D
		{
		private:
            /// the mask PolyPolygon
			basegfx::B2DPolyPolygon					maMask;

		public:
            /// constructor
			MaskPrimitive2D(
				const basegfx::B2DPolyPolygon& rMask, 
				const Primitive2DSequence& rChildren);

			/// data read access
			const basegfx::B2DPolyPolygon& getMask() const { return maMask; }

			/// 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_MASKPRIMITIVE2D_HXX

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