agg::row_accessor< T > Class Template Reference

#include <src/agg/agg_rendering_buffer.h>

Public Types
typedef const_row_info< T >	row_data

Public Member Functions
	row_accessor ()
	row_accessor (T *buf, unsigned width, unsigned height, int stride)
void	attach (T *buf, unsigned width, unsigned height, int stride)
AGG_INLINE T *	buf ()
AGG_INLINE const T *	buf () const
AGG_INLINE unsigned	width () const
AGG_INLINE unsigned	height () const
AGG_INLINE int	stride () const
AGG_INLINE unsigned	stride_abs () const
AGG_INLINE T *	row_ptr (int, int y, unsigned)
AGG_INLINE T *	row_ptr (int y)
AGG_INLINE const T *	row_ptr (int y) const
AGG_INLINE row_data	row (int y) const
template<class RenBuf >
void	copy_from (const RenBuf &src)
void	clear (T value)

Private Attributes
T *	m_buf
T *	m_start
unsigned	m_width
unsigned	m_height
int	m_stride

Detailed Description

template<class T>
class agg::row_accessor< T >

Member Typedef Documentation

row_data

template<class T >

typedef const_row_info<T> agg::row_accessor< T >::row_data

Constructor & Destructor Documentation

row_accessor() [1/2]

template<class T >

agg::row_accessor< T >::row_accessor ( )

inline

                       :
            m_buf(0),
            m_start(0),
            m_width(0),
            m_height(0),
            m_stride(0)
        {
        }

row_accessor() [2/2]

template<class T >

agg::row_accessor< T >::row_accessor ( T *  buf, unsigned  width, unsigned  height, int  stride  )

inline

                                                                          :
            m_buf(0),
            m_start(0),
            m_width(0),
            m_height(0),
            m_stride(0)
        {
            attach(buf, width, height, stride);
        }

References agg::row_accessor< T >::attach(), agg::row_accessor< T >::buf(), agg::row_accessor< T >::height(), agg::row_accessor< T >::stride(), and agg::row_accessor< T >::width().

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Member Function Documentation

attach()

template<class T >

void agg::row_accessor< T >::attach ( T *  buf, unsigned  width, unsigned  height, int  stride  )

inline

        {
            m_buf = m_start = buf;
            m_width = width;
            m_height = height;
            m_stride = stride;
            if(stride < 0) 
            { 
                m_start = m_buf - int(height - 1) * stride;
            }
        }

References agg::row_accessor< T >::buf(), agg::row_accessor< T >::height(), agg::row_accessor< T >::m_buf, agg::row_accessor< T >::m_height, agg::row_accessor< T >::m_start, agg::row_accessor< T >::m_stride, agg::row_accessor< T >::m_width, agg::row_accessor< T >::stride(), and agg::row_accessor< T >::width().

Referenced by agg::row_accessor< T >::row_accessor().

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buf() [1/2]

template<class T >

AGG_INLINE T * agg::row_accessor< T >::buf ( )

inline

{ return m_buf;    }

References agg::row_accessor< T >::m_buf.

Referenced by agg::row_accessor< T >::row_accessor(), and agg::row_accessor< T >::attach().

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buf() [2/2]

template<class T >

AGG_INLINE const T * agg::row_accessor< T >::buf ( ) const

inline

{ return m_buf;    }

References agg::row_accessor< T >::m_buf.

clear()

template<class T >

void agg::row_accessor< T >::clear ( T  value )

inline

        {
            unsigned y;
            unsigned w = width();
            unsigned stride = stride_abs();
            for(y = 0; y < height(); y++)
            {
                T* p = row_ptr(0, y, w);
                unsigned x;
                for(x = 0; x < stride; x++)
                {
                    *p++ = value;
                }
            }
        }

References agg::row_accessor< T >::height(), agg::row_accessor< T >::row_ptr(), agg::row_accessor< T >::stride(), agg::row_accessor< T >::stride_abs(), and agg::row_accessor< T >::width().

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copy_from()

template<class T >

template<class RenBuf >

void agg::row_accessor< T >::copy_from ( const RenBuf &  src )

inline

        {
            unsigned h = height();
            if(src.height() < h) h = src.height();
        
            unsigned l = stride_abs();
            if(src.stride_abs() < l) l = src.stride_abs();
        
            l *= sizeof(T);
 
            unsigned y;
            unsigned w = width();
            for (y = 0; y < h; y++)
            {
                memcpy(row_ptr(0, y, w), src.row_ptr(y), l);
            }
        }

References agg::row_accessor< T >::height(), agg::row_accessor< T >::row_ptr(), agg::row_accessor< T >::stride_abs(), and agg::row_accessor< T >::width().

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height()

template<class T >

AGG_INLINE unsigned agg::row_accessor< T >::height ( ) const

inline

{ return m_height; }

References agg::row_accessor< T >::m_height.

Referenced by agg::row_accessor< T >::row_accessor(), agg::row_accessor< T >::attach(), agg::row_accessor< T >::clear(), and agg::row_accessor< T >::copy_from().

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row()

template<class T >

AGG_INLINE row_data agg::row_accessor< T >::row ( int  y ) const

inline

        { 
            return row_data(0, m_width-1, row_ptr(y)); 
        }

References agg::row_accessor< T >::m_width, and agg::row_accessor< T >::row_ptr().

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row_ptr() [1/3]

template<class T >

AGG_INLINE T * agg::row_accessor< T >::row_ptr ( int  y )

inline

{ return m_start + y * m_stride; }

References agg::row_accessor< T >::m_start, and agg::row_accessor< T >::m_stride.

row_ptr() [2/3]

template<class T >

AGG_INLINE const T * agg::row_accessor< T >::row_ptr ( int  y ) const

inline

{ return m_start + y * m_stride; }

References agg::row_accessor< T >::m_start, and agg::row_accessor< T >::m_stride.

row_ptr() [3/3]

template<class T >

AGG_INLINE T * agg::row_accessor< T >::row_ptr ( int  , int  y, unsigned    )

inline

        { 
            return m_start + y * m_stride; 
        }

References agg::row_accessor< T >::m_start, and agg::row_accessor< T >::m_stride.

Referenced by agg::row_accessor< T >::clear(), agg::row_accessor< T >::copy_from(), and agg::row_accessor< T >::row().

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stride()

template<class T >

AGG_INLINE int agg::row_accessor< T >::stride ( ) const

inline

{ return m_stride; }

References agg::row_accessor< T >::m_stride.

Referenced by agg::row_accessor< T >::row_accessor(), agg::row_accessor< T >::attach(), and agg::row_accessor< T >::clear().

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stride_abs()

template<class T >

AGG_INLINE unsigned agg::row_accessor< T >::stride_abs ( ) const

inline

        {
            return (m_stride < 0) ? unsigned(-m_stride) : unsigned(m_stride); 
        }

References agg::row_accessor< T >::m_stride.

Referenced by agg::row_accessor< T >::clear(), and agg::row_accessor< T >::copy_from().

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width()

template<class T >

AGG_INLINE unsigned agg::row_accessor< T >::width ( ) const

inline

{ return m_width;  }

References agg::row_accessor< T >::m_width.

Referenced by agg::row_accessor< T >::row_accessor(), agg::row_accessor< T >::attach(), agg::row_accessor< T >::clear(), and agg::row_accessor< T >::copy_from().

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Member Data Documentation

m_buf

template<class T >

T* agg::row_accessor< T >::m_buf

private

Referenced by agg::row_accessor< T >::attach(), agg::row_accessor< T >::buf(), and agg::row_accessor< T >::buf().

m_height

template<class T >

unsigned agg::row_accessor< T >::m_height

private

Referenced by agg::row_accessor< T >::attach(), and agg::row_accessor< T >::height().

m_start

template<class T >

T* agg::row_accessor< T >::m_start

private

Referenced by agg::row_accessor< T >::attach(), agg::row_accessor< T >::row_ptr(), agg::row_accessor< T >::row_ptr(), and agg::row_accessor< T >::row_ptr().

m_stride

template<class T >

int agg::row_accessor< T >::m_stride

private

Referenced by agg::row_accessor< T >::attach(), agg::row_accessor< T >::row_ptr(), agg::row_accessor< T >::row_ptr(), agg::row_accessor< T >::row_ptr(), agg::row_accessor< T >::stride(), and agg::row_accessor< T >::stride_abs().

m_width

template<class T >

unsigned agg::row_accessor< T >::m_width

private

Referenced by agg::row_accessor< T >::attach(), agg::row_accessor< T >::row(), and agg::row_accessor< T >::width().

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The documentation for this class was generated from the following file:

• src/agg/agg_rendering_buffer.h