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21 
22 
23 
24 #ifndef INCLUDED_DRAWINGLAYER_PRIMITIVE2D_FILLGRADIENTPRIMITIVE2D_HXX
25 #define INCLUDED_DRAWINGLAYER_PRIMITIVE2D_FILLGRADIENTPRIMITIVE2D_HXX
26 
27 #include <drawinglayer/drawinglayerdllapi.h>
28 #include <drawinglayer/primitive2d/baseprimitive2d.hxx>
29 #include <drawinglayer/attribute/fillgradientattribute.hxx>
30 
31 //////////////////////////////////////////////////////////////////////////////
32 // predefines
33 
34 namespace basegfx { class B2DPolygon; }
35 
36 //////////////////////////////////////////////////////////////////////////////
37 // FillGradientPrimitive2D class
38 
39 namespace drawinglayer
40 {
41 	namespace primitive2d
42 	{
43         /** FillGradientPrimitive2D class
44 
45             This class defines a gradient filling for a rectangular area. The
46             Range is defined by the Transformation, the gradient by the FillGradientAttribute.
47 
48             The decomposition will deliver the decomposed gradient, e.g. for an ellipse
49             gradient the various ellipses in various color steps will be created.
50 
51             I have added functionality to create both versions of filled decompositions:
52             Those who overlap and non-overlapping ones. The overlapping version is the
53             default one since it works with and without AntiAliasing. The non-overlapping
54             version is used in the MetafilePrimitive2D decomposition when the old XOR
55             paint was recorded.
56          */
57 		class DRAWINGLAYER_DLLPUBLIC FillGradientPrimitive2D : public BufferedDecompositionPrimitive2D
58 		{
59 		private:
60             /// the geometric definition
61 			basegfx::B2DRange						maObjectRange;
62 
63             /// the gradient definition
64 			attribute::FillGradientAttribute		maFillGradient;
65 
66             /// local helpers
67             void generateMatricesAndColors(
68                 std::vector< basegfx::B2DHomMatrix >& rMatrices,
69                 std::vector< basegfx::BColor >& rColors) const;
70             Primitive2DSequence createOverlappingFill(
71                 const std::vector< basegfx::B2DHomMatrix >& rMatrices,
72                 const std::vector< basegfx::BColor >& rColors,
73                 const basegfx::B2DPolygon& rUnitPolygon) const;
74             Primitive2DSequence createNonOverlappingFill(
75                 const std::vector< basegfx::B2DHomMatrix >& rMatrices,
76                 const std::vector< basegfx::BColor >& rColors,
77                 const basegfx::B2DPolygon& rUnitPolygon) const;
78 
79 		protected:
80             /// local helper
81     		Primitive2DSequence createFill(bool bOverlapping) const;
82 
83             /// local decomposition.
84 			virtual Primitive2DSequence create2DDecomposition(const geometry::ViewInformation2D& rViewInformation) const;
85 
86 		public:
87             /// constructor
88 			FillGradientPrimitive2D(
89 				const basegfx::B2DRange& rObjectRange,
90 				const attribute::FillGradientAttribute& rFillGradient);
91 
92 			/// data read access
93 			const basegfx::B2DRange& getObjectRange() const { return maObjectRange; }
94 			const attribute::FillGradientAttribute& getFillGradient() const { return maFillGradient; }
95 
96 			/// compare operator
97 			virtual bool operator==(const BasePrimitive2D& rPrimitive) const;
98 
99 			/// get range
100 			virtual basegfx::B2DRange getB2DRange(const geometry::ViewInformation2D& rViewInformation) const;
101 
102 			/// provide unique ID
103 			DeclPrimitrive2DIDBlock()
104 		};
105 	} // end of namespace primitive2d
106 } // end of namespace drawinglayer
107 
108 //////////////////////////////////////////////////////////////////////////////
109 
110 #endif //INCLUDED_DRAWINGLAYER_PRIMITIVE2D_FILLGRADIENTPRIMITIVE2D_HXX
111 
112 //////////////////////////////////////////////////////////////////////////////
113 // eof
114