bzpixelraster.hxx

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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 * This file incorporates work covered by the following license notice:
 *
 *   Licensed to the Apache Software Foundation (ASF) under one or more
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#pragma once
 
#include <basegfx/pixel/bpixel.hxx>
#include <sal/types.h>
#include <memory>
#include <cassert>
#include <string.h>
 
namespace basegfx
{
    class BZPixelRaster
    {
    private:
        BZPixelRaster(const BZPixelRaster&) = delete;
        BZPixelRaster& operator=(const BZPixelRaster&) = delete;
 
        sal_uInt32                  mnWidth;
        sal_uInt32                  mnHeight;
        sal_uInt32                  mnCount;
        std::unique_ptr<BPixel[]>   mpContent;
        std::unique_ptr<sal_uInt16[]>  mpZBuffer;
 
    public:
        // constructor/destructor
        BZPixelRaster(sal_uInt32 nWidth, sal_uInt32 nHeight)
        :   mnWidth(nWidth),
            mnHeight(nHeight),
            mnCount(nWidth * nHeight),
            mpContent(new BPixel[mnCount]),
            mpZBuffer(new sal_uInt16[mnCount])
        {
            memset(mpZBuffer.get(), 0, sizeof(sal_uInt16) * mnCount);
        }
 
         // coordinate calcs between X/Y and span
        sal_uInt32 getIndexFromXY(sal_uInt32 nX, sal_uInt32 nY) const { return (nX + (nY * mnWidth)); }
 
        // data access read
        sal_uInt32 getWidth() const { return mnWidth; }
        sal_uInt32 getHeight() const { return mnHeight; }
 
         // data access read only
        const BPixel& getBPixel(sal_uInt32 nIndex) const
        {
            assert(nIndex < mnCount && "Access out of range");
            return mpContent[nIndex];
        }
 
        // data access read/write
        BPixel& getBPixel(sal_uInt32 nIndex)
        {
            assert(nIndex < mnCount && "Access out of range");
            return mpContent[nIndex];
        }
 
        // data access read only
        const sal_uInt16& getZ(sal_uInt32 nIndex) const
        {
            assert(nIndex < mnCount && "Access out of range");
            return mpZBuffer[nIndex];
        }
 
        // data access read/write
        sal_uInt16& getZ(sal_uInt32 nIndex)
        {
            assert(nIndex < mnCount && "Access out of range");
            return mpZBuffer[nIndex];
        }
    };
} // end of namespace basegfx
 
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