annotate OrthancStone/Sources/Fonts/GlyphBitmapAlphabet.cpp @ 2077:07964689cb0b

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author Sebastien Jodogne <s.jodogne@gmail.com>
date Wed, 12 Jul 2023 21:20:22 +0200
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1 /**
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2 * Stone of Orthanc
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3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
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4 * Department, University Hospital of Liege, Belgium
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5 * Copyright (C) 2017-2023 Osimis S.A., Belgium
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6 * Copyright (C) 2021-2023 Sebastien Jodogne, ICTEAM UCLouvain, Belgium
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7 *
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8 * This program is free software: you can redistribute it and/or
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9 * modify it under the terms of the GNU Lesser General Public License
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10 * as published by the Free Software Foundation, either version 3 of
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11 * the License, or (at your option) any later version.
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12 *
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13 * This program is distributed in the hope that it will be useful, but
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14 * WITHOUT ANY WARRANTY; without even the implied warranty of
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15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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16 * Lesser General Public License for more details.
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17 *
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18 * You should have received a copy of the GNU Lesser General Public
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19 * License along with this program. If not, see
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20 * <http://www.gnu.org/licenses/>.
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21 **/
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22
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23
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24 #include "GlyphBitmapAlphabet.h"
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25
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26 #include "TextBoundingBox.h"
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27 #include "../Toolbox/DynamicBitmap.h"
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28
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29 #include <Images/Image.h>
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30 #include <Images/ImageProcessing.h>
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31
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32 namespace OrthancStone
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33 {
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34 class GlyphBitmapAlphabet::RenderTextVisitor : public GlyphAlphabet::ITextVisitor
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35 {
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36 private:
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37 Orthanc::ImageAccessor& target_;
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38 const GlyphBitmapAlphabet& that_;
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39 int offsetX_;
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40 int offsetY_;
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41
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42 public:
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43 RenderTextVisitor(Orthanc::ImageAccessor& target,
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44 const GlyphBitmapAlphabet& that,
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45 int offsetX,
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46 int offsetY) :
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47 target_(target),
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48 that_(that),
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49 offsetX_(offsetX),
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50 offsetY_(offsetY)
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51 {
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52 }
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53
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54 virtual void Visit(uint32_t unicode,
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55 int x,
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56 int y,
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57 unsigned int width,
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58 unsigned int height,
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59 const Orthanc::IDynamicObject* payload) ORTHANC_OVERRIDE
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60 {
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61 int left = x + offsetX_;
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62 int top = y + offsetY_;
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63
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64 assert(payload != NULL);
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65 const DynamicBitmap& glyph = *dynamic_cast<const DynamicBitmap*>(payload);
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66
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67 assert(left >= 0 &&
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68 top >= 0 &&
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69 static_cast<unsigned int>(left) + width <= target_.GetWidth() &&
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70 static_cast<unsigned int>(top) + height <= target_.GetHeight() &&
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71 width == glyph.GetBitmap().GetWidth() &&
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72 height == glyph.GetBitmap().GetHeight());
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74 {
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75 Orthanc::ImageAccessor region;
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76 target_.GetRegion(region, left, top, width, height);
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77 Orthanc::ImageProcessing::Copy(region, glyph.GetBitmap());
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78 }
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79 }
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80 };
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81
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82
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83 #if ORTHANC_ENABLE_LOCALE == 1
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84 void GlyphBitmapAlphabet::LoadCodepage(FontRenderer& renderer,
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85 Orthanc::Encoding codepage)
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86 {
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87 for (unsigned int i = 0; i < 256; i++)
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88 {
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89 uint32_t unicode;
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90 if (GlyphAlphabet::GetUnicodeFromCodepage(unicode, i, codepage))
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91 {
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92 AddUnicodeCharacter(renderer, unicode);
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93 }
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94 }
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95 }
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96 #endif
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97
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98
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99 Orthanc::ImageAccessor* GlyphBitmapAlphabet::RenderText(const std::string& utf8) const
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100 {
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101 TextBoundingBox box(alphabet_, utf8);
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102
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103 std::unique_ptr<Orthanc::ImageAccessor> bitmap(
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104 new Orthanc::Image(Orthanc::PixelFormat_Grayscale8,
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105 box.GetWidth(), box.GetHeight(),
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106 true /* force minimal pitch */));
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107
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108 Orthanc::ImageProcessing::Set(*bitmap, 0);
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109
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110 RenderTextVisitor visitor(*bitmap, *this, -box.GetLeft(), -box.GetTop());
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111 alphabet_.Apply(visitor, utf8);
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112
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113 return bitmap.release();
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114 }
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115 }