vcl/inc/bitmap/Octree.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
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
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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
  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_VCL_INC_OCTREE_HXX
  21 #define INCLUDED_VCL_INC_OCTREE_HXX
  22
  23 #include <vcl/dllapi.h>
  24 #include <vcl/BitmapColor.hxx>
  25 #include <tools/solar.h>
  26
  27 struct OctreeNode
  28 {
  29     sal_uLong nCount = 0;
  30     sal_uLong nRed = 0;
  31     sal_uLong nGreen = 0;
  32     sal_uLong nBlue = 0;
  33     std::unique_ptr<OctreeNode> pChild[8];
  34     OctreeNode* pNext = nullptr;
  35     sal_uInt16 nPalIndex = 0;
  36     bool bLeaf = false;
  37 };
  38
  39 class BitmapReadAccess;
  40
  41 class VCL_PLUGIN_PUBLIC Octree
  42 {
  43 private:
  44     void CreatePalette(OctreeNode* pNode);
  45     void GetPalIndex(const OctreeNode* pNode, BitmapColor const& color);
  46
  47     SAL_DLLPRIVATE void add(std::unique_ptr<OctreeNode>& rpNode, BitmapColor const& color);
  48     SAL_DLLPRIVATE void reduce();
  49
  50     BitmapPalette maPalette;
  51     sal_uLong mnLeafCount;
  52     sal_uLong mnLevel;
  53     std::unique_ptr<OctreeNode> pTree;
  54     std::vector<OctreeNode*> mpReduce;
  55     sal_uInt16 mnPalIndex;
  56
  57 public:
  58     Octree(const BitmapReadAccess& rReadAcc, sal_uLong nColors);
  59     ~Octree();
  60
  61     const BitmapPalette& GetPalette();
  62     sal_uInt16 GetBestPaletteIndex(const BitmapColor& rColor);
  63 };
  64
  65 class InverseColorMap
  66 {
  67 private:
  68     std::vector<sal_uInt8> mpBuffer;
  69     std::vector<sal_uInt8> mpMap;
  70
  71     void ImplCreateBuffers();
  72
  73 public:
  74     explicit InverseColorMap(const BitmapPalette& rPal);
  75     ~InverseColorMap();
  76
  77     sal_uInt16 GetBestPaletteIndex(const BitmapColor& rColor);
  78 };
  79
  80 #endif // INCLUDED_VCL_INC_OCTREE_HXX
  81
  82 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */