vcl/inc/bitmap/impoctree.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
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   9  * This file incorporates work covered by the following license notice:
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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 INCLUDED_VCL_INC_IMPOCTREE_HXX
  21 #define INCLUDED_VCL_INC_IMPOCTREE_HXX
  22
  23 #include "Octree.hxx"
  24
  25 class ImpErrorQuad
  26 {
  27     sal_Int16 nRed;
  28     sal_Int16 nGreen;
  29     sal_Int16 nBlue;
  30
  31 public:
  32     ImpErrorQuad()
  33         : nRed(0)
  34         , nGreen(0)
  35         , nBlue(0)
  36     {
  37     }
  38
  39     ImpErrorQuad(const BitmapColor& rColor)
  40         : nRed(rColor.GetRed() << 5)
  41         , nGreen(rColor.GetGreen() << 5)
  42         , nBlue(rColor.GetBlue() << 5)
  43     {
  44     }
  45
  46     inline void operator=(const BitmapColor& rColor);
  47     inline ImpErrorQuad& operator-=(const BitmapColor& rColor);
  48
  49     inline void ImplAddColorError1(const ImpErrorQuad& rErrQuad);
  50     inline void ImplAddColorError3(const ImpErrorQuad& rErrQuad);
  51     inline void ImplAddColorError5(const ImpErrorQuad& rErrQuad);
  52     inline void ImplAddColorError7(const ImpErrorQuad& rErrQuad);
  53
  54     inline BitmapColor ImplGetColor();
  55 };
  56
  57 inline void ImpErrorQuad::operator=(const BitmapColor& rColor)
  58 {
  59     nRed = rColor.GetRed() << 5;
  60     nGreen = rColor.GetGreen() << 5;
  61     nBlue = rColor.GetBlue() << 5;
  62 }
  63
  64 inline ImpErrorQuad& ImpErrorQuad::operator-=(const BitmapColor& rColor)
  65 {
  66     nRed -= rColor.GetRed() << 5;
  67     nGreen -= rColor.GetGreen() << 5;
  68     nBlue -= rColor.GetBlue() << 5;
  69
  70     return *this;
  71 }
  72
  73 inline void ImpErrorQuad::ImplAddColorError1(const ImpErrorQuad& rErrQuad)
  74 {
  75     nRed += rErrQuad.nRed >> 4;
  76     nGreen += rErrQuad.nGreen >> 4;
  77     nBlue += rErrQuad.nBlue >> 4;
  78 }
  79
  80 inline void ImpErrorQuad::ImplAddColorError3(const ImpErrorQuad& rErrQuad)
  81 {
  82     nRed += rErrQuad.nRed * 3L >> 4;
  83     nGreen += rErrQuad.nGreen * 3L >> 4;
  84     nBlue += rErrQuad.nBlue * 3L >> 4;
  85 }
  86
  87 inline void ImpErrorQuad::ImplAddColorError5(const ImpErrorQuad& rErrQuad)
  88 {
  89     nRed += rErrQuad.nRed * 5L >> 4;
  90     nGreen += rErrQuad.nGreen * 5L >> 4;
  91     nBlue += rErrQuad.nBlue * 5L >> 4;
  92 }
  93
  94 inline void ImpErrorQuad::ImplAddColorError7(const ImpErrorQuad& rErrQuad)
  95 {
  96     nRed += rErrQuad.nRed * 7L >> 4;
  97     nGreen += rErrQuad.nGreen * 7L >> 4;
  98     nBlue += rErrQuad.nBlue * 7L >> 4;
  99 }
 100
 101 inline BitmapColor ImpErrorQuad::ImplGetColor()
 102 {
 103     return BitmapColor(std::clamp(nRed, sal_Int16(0), sal_Int16(8160)) >> 5,
 104                        std::clamp(nGreen, sal_Int16(0), sal_Int16(8160)) >> 5,
 105                        std::clamp(nBlue, sal_Int16(0), sal_Int16(8160)) >> 5);
 106 }
 107
 108 #endif // INCLUDED_VCL_INC_IMPOCTREE_HXX
 109
 110 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */