include/basegfx/raster/bzpixelraster.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 #pragma once
  21
  22 #include <basegfx/pixel/bpixel.hxx>
  23 #include <sal/types.h>
  24 #include <memory>
  25 #include <cassert>
  26 #include <string.h>
  27
  28 namespace basegfx
  29 {
  30     class BZPixelRaster
  31     {
  32     private:
  33         BZPixelRaster(const BZPixelRaster&) = delete;
  34         BZPixelRaster& operator=(const BZPixelRaster&) = delete;
  35
  36         sal_uInt32                  mnWidth;
  37         sal_uInt32                  mnHeight;
  38         sal_uInt32                  mnCount;
  39         std::unique_ptr<BPixel[]>   mpContent;
  40         std::unique_ptr<sal_uInt16[]>  mpZBuffer;
  41
  42     public:
  43         // constructor/destructor
  44         BZPixelRaster(sal_uInt32 nWidth, sal_uInt32 nHeight)
  45         :   mnWidth(nWidth),
  46             mnHeight(nHeight),
  47             mnCount(nWidth * nHeight),
  48             mpContent(new BPixel[mnCount]),
  49             mpZBuffer(new sal_uInt16[mnCount])
  50         {
  51             memset(mpZBuffer.get(), 0, sizeof(sal_uInt16) * mnCount);
  52         }
  53
  54          // coordinate calcs between X/Y and span
  55         sal_uInt32 getIndexFromXY(sal_uInt32 nX, sal_uInt32 nY) const { return (nX + (nY * mnWidth)); }
  56
  57         // data access read
  58         sal_uInt32 getWidth() const { return mnWidth; }
  59         sal_uInt32 getHeight() const { return mnHeight; }
  60
  61          // data access read only
  62         const BPixel& getBPixel(sal_uInt32 nIndex) const
  63         {
  64             assert(nIndex < mnCount && "Access out of range");
  65             return mpContent[nIndex];
  66         }
  67
  68         // data access read/write
  69         BPixel& getBPixel(sal_uInt32 nIndex)
  70         {
  71             assert(nIndex < mnCount && "Access out of range");
  72             return mpContent[nIndex];
  73         }
  74
  75         // data access read only
  76         const sal_uInt16& getZ(sal_uInt32 nIndex) const
  77         {
  78             assert(nIndex < mnCount && "Access out of range");
  79             return mpZBuffer[nIndex];
  80         }
  81
  82         // data access read/write
  83         sal_uInt16& getZ(sal_uInt32 nIndex)
  84         {
  85             assert(nIndex < mnCount && "Access out of range");
  86             return mpZBuffer[nIndex];
  87         }
  88     };
  89 } // end of namespace basegfx
  90
  91 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */