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.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   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
  13  *   with this work for additional information regarding copyright
  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 INCLUDED_BASEGFX_RASTER_BPIXELRASTER_HXX
  21 #define INCLUDED_BASEGFX_RASTER_BPIXELRASTER_HXX
  22
  23 #include <memory>
  24 #include <algorithm>
  25 #include <string.h>
  26 #include <sal/types.h>
  27 #include <basegfx/pixel/bpixel.hxx>
  28 #include <basegfx/basegfxdllapi.h>
  29
  30 namespace basegfx
  31 {
  32     class BPixelRaster
  33     {
  34     private:
  35         BPixelRaster(const BPixelRaster&) = delete;
  36         BPixelRaster& operator=(const BPixelRaster&) = delete;
  37
  38     protected:
  39         sal_uInt32                  mnWidth;
  40         sal_uInt32                  mnHeight;
  41         sal_uInt32                  mnCount;
  42         std::unique_ptr<BPixel[]>   mpContent;
  43
  44     public:
  45         // reset
  46         void reset()
  47         {
  48             memset(mpContent.get(), 0, sizeof(BPixel) * mnCount);
  49         }
  50
  51         // constructor/destructor
  52         BPixelRaster(sal_uInt32 nWidth, sal_uInt32 nHeight)
  53         :   mnWidth(nWidth),
  54             mnHeight(nHeight),
  55             mnCount(nWidth * nHeight),
  56             mpContent(new BPixel[mnCount])
  57         {
  58             reset();
  59         }
  60
  61         // coordinate calcs between X/Y and span
  62         sal_uInt32 getIndexFromXY(sal_uInt32 nX, sal_uInt32 nY) const { return (nX + (nY * mnWidth)); }
  63
  64         // data access read
  65         sal_uInt32 getWidth() const { return mnWidth; }
  66         sal_uInt32 getHeight() const { return mnHeight; }
  67
  68         // data access read only
  69         const BPixel& getBPixel(sal_uInt32 nIndex) const
  70         {
  71             assert(nIndex < mnCount && "Access out of range");
  72             return mpContent[nIndex];
  73         }
  74
  75         // data access read/write
  76         BPixel& getBPixel(sal_uInt32 nIndex)
  77         {
  78             assert(nIndex < mnCount && "Access out of range");
  79             return mpContent[nIndex];
  80         }
  81     };
  82 } // end of namespace basegfx
  83
  84 #endif // INCLUDED_BASEGFX_RASTER_BPIXELRASTER_HXX
  85
  86 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */