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.
   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_VCL_INC_OCTREE_HXX
  21 #define INCLUDED_VCL_INC_OCTREE_HXX
  22
  23 #include <vcl/dllapi.h>
  24 #include <vcl/BitmapColor.hxx>
  25
  26 struct OctreeNode
  27 {
  28     sal_uLong nCount = 0;
  29     sal_uLong nRed = 0;
  30     sal_uLong nGreen = 0;
  31     sal_uLong nBlue = 0;
  32     std::unique_ptr<OctreeNode> pChild[8];
  33     OctreeNode* pNext = nullptr;
  34     sal_uInt16 nPalIndex = 0;
  35     bool bLeaf = false;
  36 };
  37
  38 class BitmapReadAccess;
  39
  40 class VCL_PLUGIN_PUBLIC Octree
  41 {
  42 private:
  43     void CreatePalette(OctreeNode* pNode);
  44     void GetPalIndex(const OctreeNode* pNode);
  45
  46     SAL_DLLPRIVATE void add(std::unique_ptr<OctreeNode>& rpNode);
  47     SAL_DLLPRIVATE void reduce();
  48
  49     BitmapPalette maPalette;
  50     sal_uLong mnLeafCount;
  51     sal_uLong mnLevel;
  52     std::unique_ptr<OctreeNode> pTree;
  53     std::vector<OctreeNode*> mpReduce;
  54     BitmapColor const* mpColor;
  55     const BitmapReadAccess* mpAccess;
  56     sal_uInt16 mnPalIndex;
  57
  58 public:
  59     Octree(const BitmapReadAccess& rReadAcc, sal_uLong nColors);
  60     ~Octree();
  61
  62     const BitmapPalette& GetPalette();
  63     sal_uInt16 GetBestPaletteIndex(const BitmapColor& rColor);
  64 };
  65
  66 class InverseColorMap
  67 {
  68 private:
  69     std::vector<sal_uInt8> mpBuffer;
  70     std::vector<sal_uInt8> mpMap;
  71
  72     void ImplCreateBuffers();
  73
  74 public:
  75     explicit InverseColorMap(const BitmapPalette& rPal);
  76     ~InverseColorMap();
  77
  78     sal_uInt16 GetBestPaletteIndex(const BitmapColor& rColor);
  79 };
  80
  81 #endif // INCLUDED_VCL_INC_OCTREE_HXX
  82
  83 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */