include/basegfx/raster/bpixelraster.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
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   5  * This Source Code Form is subject to the terms of the Mozilla Public
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   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
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  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #ifndef _BGFX_RASTER_BPIXELRASTER_HXX
  21 #define _BGFX_RASTER_BPIXELRASTER_HXX
  22
  23 #include <algorithm>
  24 #include <string.h>
  25 #include <sal/types.h>
  26 #include <basegfx/pixel/bpixel.hxx>
  27 #include <basegfx/basegfxdllapi.h>
  28
  29 //////////////////////////////////////////////////////////////////////////////
  30 // predeclarations
  31
  32 //////////////////////////////////////////////////////////////////////////////
  33
  34 namespace basegfx
  35 {
  36     class BPixelRaster
  37     {
  38     private:
  39         // do not allow copy constructor and assignment operator
  40         BPixelRaster(const BPixelRaster&);
  41         BPixelRaster& operator=(const BPixelRaster&);
  42
  43     protected:
  44         sal_uInt32                  mnWidth;
  45         sal_uInt32                  mnHeight;
  46         sal_uInt32                  mnCount;
  47         BPixel*                     mpContent;
  48
  49     public:
  50         // reset
  51         void reset()
  52         {
  53             memset(mpContent, 0, sizeof(BPixel) * mnCount);
  54         }
  55
  56         // constructor/destructor
  57         BPixelRaster(sal_uInt32 nWidth, sal_uInt32 nHeight)
  58         :   mnWidth(nWidth),
  59             mnHeight(nHeight),
  60             mnCount(nWidth * nHeight),
  61             mpContent(new BPixel[mnCount])
  62         {
  63             reset();
  64         }
  65
  66         ~BPixelRaster()
  67         {
  68             delete [] mpContent;
  69         }
  70
  71         // coordinate calcs between X/Y and span
  72         sal_uInt32 getIndexFromXY(sal_uInt32 nX, sal_uInt32 nY) const { return (nX + (nY * mnWidth)); }
  73         sal_uInt32 getXFromIndex(sal_uInt32 nIndex) const { return (nIndex % mnWidth); }
  74         sal_uInt32 getYFromIndex(sal_uInt32 nIndex) const { return (nIndex / mnWidth); }
  75
  76         // data access read
  77         sal_uInt32 getWidth() const { return mnWidth; }
  78         sal_uInt32 getHeight() const { return mnHeight; }
  79         sal_uInt32 getCount() const { return mnCount; }
  80
  81         // data access read only
  82         const BPixel& getBPixel(sal_uInt32 nIndex) const
  83         {
  84             assert(nIndex < mnCount); //Access out of range
  85             return mpContent[nIndex];
  86         }
  87
  88         // data access read/write
  89         BPixel& getBPixel(sal_uInt32 nIndex)
  90         {
  91             assert(nIndex < mnCount); //Access out of range
  92             return mpContent[nIndex];
  93         }
  94     };
  95 } // end of namespace basegfx
  96
  97 #endif /* _BGFX_RASTER_BPIXELRASTER_HXX */
  98
  99 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */