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#ifndef _BGFX_RASTER_BPIXELRASTER_HXX
#define _BGFX_RASTER_BPIXELRASTER_HXX

#include <algorithm>
#include <sal/types.h>
#include <basegfx/pixel/bpixel.hxx>
#include <rtl/memory.h>

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

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

namespace basegfx
{
    class BPixelRaster
    {
    private:
        // do not allow copy constructor and assignment operator
        BPixelRaster(const BPixelRaster&);
        BPixelRaster& operator=(const BPixelRaster&);

    protected:
        sal_uInt32					mnWidth;
        sal_uInt32					mnHeight;
        sal_uInt32					mnCount;
        BPixel*						mpContent;

    public:
        // reset
        void reset()
        {
            rtl_zeroMemory(mpContent, sizeof(BPixel) * mnCount);
        }

        // constructor/destructor
        BPixelRaster(sal_uInt32 nWidth, sal_uInt32 nHeight)
        :	mnWidth(nWidth),
            mnHeight(nHeight),
            mnCount(nWidth * nHeight),
            mpContent(new BPixel[mnCount])
        {
            reset();
        }

        ~BPixelRaster()
        {
            delete [] mpContent;
        }

        // coordinate calcs between X/Y and span
        sal_uInt32 getIndexFromXY(sal_uInt32 nX, sal_uInt32 nY) const { return (nX + (nY * mnWidth)); }
        sal_uInt32 getXFromIndex(sal_uInt32 nIndex) const { return (nIndex % mnWidth); }
        sal_uInt32 getYFromIndex(sal_uInt32 nIndex) const { return (nIndex / mnWidth); }

        // data access read
        sal_uInt32 getWidth() const { return mnWidth; }
        sal_uInt32 getHeight() const { return mnHeight; }
        sal_uInt32 getCount() const { return mnCount; }
        
        // data access read only
        const BPixel& getBPixel(sal_uInt32 nIndex) const
        {
#ifdef DBG_UTIL
            if(nIndex >= mnCount) 
            {
                OSL_FAIL("getBPixel: Access out of range (!)");
                return BPixel::getEmptyBPixel();
            }
#endif
            return mpContent[nIndex];
        }

        // data access read/write
        BPixel& getBPixel(sal_uInt32 nIndex)
        {
#ifdef DBG_UTIL
            if(nIndex >= mnCount) 
            {
                OSL_FAIL("getBPixel: Access out of range (!)");
                return mpContent[0L];
            }
#endif
            return mpContent[nIndex];
        }
    };
} // end of namespace basegfx

#endif /* _BGFX_RASTER_BPIXELRASTER_HXX */

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