AOO410/main/drawinglayer/inc/drawinglayer/processor2d/hittestprocessor2d.hxx

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#ifndef INCLUDED_DRAWINGLAYER_PROCESSOR2D_HITTESTPROCESSOR2D_HXX
#define INCLUDED_DRAWINGLAYER_PROCESSOR2D_HITTESTPROCESSOR2D_HXX

#include <drawinglayer/drawinglayerdllapi.h>
#include <drawinglayer/processor2d/baseprocessor2d.hxx>

//////////////////////////////////////////////////////////////////////////////
// predeclarations

namespace basegfx { class B2DPolygon; }
namespace basegfx { class B2DPolyPolygon; }
namespace drawinglayer { namespace primitive2d { class ScenePrimitive2D; }}

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

namespace drawinglayer
{
	namespace processor2d
	{
        /** HitTestProcessor2D class

            This processor implements a HitTest with the feeded primitives,
            given tolerance and extras
         */
		class DRAWINGLAYER_DLLPUBLIC HitTestProcessor2D : public BaseProcessor2D
		{
		private:
			/// discrete HitTest position
			basegfx::B2DPoint			maDiscreteHitPosition;

			/// discrete HitTolerance
			double						mfDiscreteHitTolerance;

			/// bitfield
			unsigned					mbHit : 1;
			unsigned					mbHitToleranceUsed : 1;

			/*  this flag decides if primitives which are embedded to an
                UnifiedTransparencePrimitive2D and are invisible will be taken into account for 
                HitTesting or not. Those primitives are created for objects which are else 
                completely invisible and normally their content exists of hairline 
                primitives describing the object's contour
             */
			unsigned					mbUseInvisiblePrimitiveContent : 1;

            /// flag to concentraze on text hits only
            unsigned                    mbHitTextOnly : 1;

			/// tooling methods
			void processBasePrimitive2D(const primitive2d::BasePrimitive2D& rCandidate);
			bool checkHairlineHitWithTolerance(
				const basegfx::B2DPolygon& rPolygon,
				double fDiscreteHitTolerance);
			bool checkFillHitWithTolerance(
				const basegfx::B2DPolyPolygon& rPolyPolygon,
				double fDiscreteHitTolerance);
			void check3DHit(const primitive2d::ScenePrimitive2D& rCandidate);

		public:
			HitTestProcessor2D(
				const geometry::ViewInformation2D& rViewInformation,
				const basegfx::B2DPoint& rLogicHitPosition,
				double fLogicHitTolerance,
                bool bHitTextOnly);
			virtual ~HitTestProcessor2D();

			/// data write access
			void setUseInvisiblePrimitiveContent(bool bNew)
			{
				if((bool)mbUseInvisiblePrimitiveContent != bNew) mbUseInvisiblePrimitiveContent = bNew;
			}

            /// data read access
			const basegfx::B2DPoint& getDiscreteHitPosition() const { return maDiscreteHitPosition; }
			double getDiscreteHitTolerance() const { return mfDiscreteHitTolerance; }
			bool getHit() const { return mbHit; }
			bool getHitToleranceUsed() const { return mbHitToleranceUsed; }
			bool getUseInvisiblePrimitiveContent() const { return mbUseInvisiblePrimitiveContent;}
            bool getHitTextOnly() const { return mbHitTextOnly; }
		};
	} // end of namespace processor2d
} // end of namespace drawinglayer

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

#endif // INCLUDED_DRAWINGLAYER_PROCESSOR2D_HITTESTPROCESSOR2D_HXX

// eof