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agg_pixfmt_transposer.h

//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software 
// is granted provided this copyright notice appears in all copies. 
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
//          mcseemagg@yahoo.com
//          http://www.antigrain.com
//----------------------------------------------------------------------------

#ifndef AGG_PIXFMT_TRANSPOSER_INCLUDED
#define AGG_PIXFMT_TRANSPOSER_INCLUDED

#include "agg_basics.h"

namespace agg
{
    //=======================================================pixfmt_transposer
    template<class PixFmt> class pixfmt_transposer
    {
    public:
        typedef PixFmt pixfmt_type;
        typedef typename pixfmt_type::color_type color_type;
        typedef typename pixfmt_type::row_data row_data;
        typedef typename color_type::value_type value_type;
        typedef typename color_type::calc_type calc_type;

        //--------------------------------------------------------------------
        pixfmt_transposer() : m_pixf(0) {}
        explicit pixfmt_transposer(pixfmt_type& pixf) : m_pixf(&pixf) {}
        void attach(pixfmt_type& pixf) { m_pixf = &pixf; }

        //--------------------------------------------------------------------
        AGG_INLINE unsigned width()  const { return m_pixf->height();  }
        AGG_INLINE unsigned height() const { return m_pixf->width(); }

        //--------------------------------------------------------------------
        AGG_INLINE color_type pixel(int x, int y) const
        {
            return m_pixf->pixel(y, x);
        }

        //--------------------------------------------------------------------
        AGG_INLINE void copy_pixel(int x, int y, const color_type& c)
        {
            m_pixf->copy_pixel(y, x, c);
        }

        //--------------------------------------------------------------------
        AGG_INLINE void blend_pixel(int x, int y, 
                                    const color_type& c, 
                                    int8u cover)
        {
            m_pixf->blend_pixel(y, x, c, cover);
        }

        //--------------------------------------------------------------------
        AGG_INLINE void copy_hline(int x, int y, 
                                   unsigned len, 
                                   const color_type& c)
        {
            m_pixf->copy_vline(y, x, len, c);
        }

        //--------------------------------------------------------------------
        AGG_INLINE void copy_vline(int x, int y,
                                   unsigned len, 
                                   const color_type& c)
        {
            m_pixf->copy_hline(y, x, len, c);
        }

        //--------------------------------------------------------------------
        AGG_INLINE void blend_hline(int x, int y,
                                    unsigned len, 
                                    const color_type& c,
                                    int8u cover)
        {
            m_pixf->blend_vline(y, x, len, c, cover);
        }

        //--------------------------------------------------------------------
        AGG_INLINE void blend_vline(int x, int y,
                                    unsigned len, 
                                    const color_type& c,
                                    int8u cover)
        {
            m_pixf->blend_hline(y, x, len, c, cover);
        }

        //--------------------------------------------------------------------
        AGG_INLINE void blend_solid_hspan(int x, int y,
                                          unsigned len, 
                                          const color_type& c,
                                          const int8u* covers)
        {
            m_pixf->blend_solid_vspan(y, x, len, c, covers);
        }

        //--------------------------------------------------------------------
        AGG_INLINE void blend_solid_vspan(int x, int y,
                                          unsigned len, 
                                          const color_type& c,
                                          const int8u* covers)
        {
            m_pixf->blend_solid_hspan(y, x, len, c, covers);
        }

        //--------------------------------------------------------------------
        AGG_INLINE void copy_color_hspan(int x, int y,
                                         unsigned len, 
                                         const color_type* colors)
        {
            m_pixf->copy_color_vspan(y, x, len, colors);
        }

        //--------------------------------------------------------------------
        AGG_INLINE void copy_color_vspan(int x, int y,
                                         unsigned len, 
                                         const color_type* colors)
        {
            m_pixf->copy_color_hspan(y, x, len, colors);
        }

        //--------------------------------------------------------------------
        AGG_INLINE void blend_color_hspan(int x, int y,
                                          unsigned len, 
                                          const color_type* colors,
                                          const int8u* covers,
                                          int8u cover)
        {
            m_pixf->blend_color_vspan(y, x, len, colors, covers, cover);
        }

        //--------------------------------------------------------------------
        AGG_INLINE void blend_color_vspan(int x, int y,
                               unsigned len, 
                               const color_type* colors,
                               const int8u* covers,
                               int8u cover)
        {
            m_pixf->blend_color_hspan(y, x, len, colors, covers, cover);
        }

    private:
        pixfmt_type* m_pixf;
    };
}

#endif



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