Shading.h

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//---------------------------------------------------------------------------------------
// Copyright (c) 2001-2008 by PDFTron Systems Inc. All Rights Reserved.
// Consult legal.txt regarding legal and license information.
//---------------------------------------------------------------------------------------

#ifndef   H_CPPPDFShading
#define   H_CPPPDFShading

#include <PDF/ColorSpace.h>
#include <PDF/Rect.h>
#include <Common/Matrix2D.h>
#include <C/PDF/TRN_Shading.h>

namespace pdftron { 
        namespace PDF {

class Shading
{
public:

         Shading (SDF::Obj shading_dict = 0);

         Shading (const Shading& s);
         Shading& operator=(const Shading& s);
         ~Shading();

        enum Type
        {
                e_function_shading,
                e_axial_shading,
                e_radial_shading,
                e_free_gouraud_shading,
                e_lattice_gouraud_shading,
                e_coons_shading,
                e_tensor_shading,
                e_null
        };

        // Common Static/Global methods -------------------------------------------------

         static Type GetType(SDF::Obj shading_dict);

        // Common methods ------------------------------------------------------------------

         Shading::Type GetType() const;

         SDF::Obj GetSDFObj ();

         ColorSpace GetBaseColorSpace();

         bool HasBBox();

         Rect GetBBox();

         bool HasBackground();

         ColorPt GetBackground();

          bool GetAntialias();

        
        // Specific methods ------------------------------------------------------------

         double GetParamStart();

         double GetParamEnd();

         bool IsExtendStart();

         bool IsExtendEnd();

         void GetColor(double t, ColorPt& out_color);


        // Specific AxialShading methods -----------------------------------------------

         void GetCoords(double& out_x0, double& out_y0, double& out_x1, double& out_y1);


        // Specific RadialShading methods ----------------------------------------------

         void GetCoords(double& out_x0, double& out_y0, double& out_r0,
                double& out_x1, double& out_y1, double& out_r1);


        // Specific FunctionShading methods --------------------------------------------

         void GetDomain(double& out_xmin, double& out_xmax, double& out_ymin, double& out_ymax);

         Common::Matrix2D GetMatrix();

         void GetColor(double t1, double t2, ColorPt& out_color);

         Shading(TRN_Shading impl);
        TRN_Shading mp_shade;
};


#include <Impl/Shading.inl>

        };      // namespace PDF
};      // namespace pdftron

#endif

---

© 2002-2008 PDFTron Systems Inc.