annotate OrthancStone/Sources/Fonts/GlyphBitmapAlphabet.cpp @ 1688:c14dd6e11ddd

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author Benjamin Golinvaux <bgo@osimis.io>
date Wed, 25 Nov 2020 17:03:08 +0100
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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) 2017-2020 Osimis S.A., Belgium
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6 *
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7 * This program is free software: you can redistribute it and/or
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8 * modify it under the terms of the GNU Lesser General Public License
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9 * as published by the Free Software Foundation, either version 3 of
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10 * the License, or (at your option) any later version.
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11 *
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12 * This program is distributed in the hope that it will be useful, but
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13 * WITHOUT ANY WARRANTY; without even the implied warranty of
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14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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15 * Lesser General Public License for more details.
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16 *
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17 * You should have received a copy of the GNU Lesser General Public
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18 * License along with this program. If not, see
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19 * <http://www.gnu.org/licenses/>.
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20 **/
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21
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22
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23 #include "GlyphBitmapAlphabet.h"
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24
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25 #include "TextBoundingBox.h"
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26 #include "../Toolbox/DynamicBitmap.h"
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27
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28 #include <Images/Image.h>
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29 #include <Images/ImageProcessing.h>
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30
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31 namespace OrthancStone
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32 {
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33 class GlyphBitmapAlphabet::RenderTextVisitor : public GlyphAlphabet::ITextVisitor
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34 {
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35 private:
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36 Orthanc::ImageAccessor& target_;
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37 const GlyphBitmapAlphabet& that_;
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38 int offsetX_;
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39 int offsetY_;
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40
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41 public:
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42 RenderTextVisitor(Orthanc::ImageAccessor& target,
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43 const GlyphBitmapAlphabet& that,
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44 int offsetX,
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45 int offsetY) :
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46 target_(target),
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47 that_(that),
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48 offsetX_(offsetX),
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49 offsetY_(offsetY)
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50 {
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51 }
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52
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53 virtual void Visit(uint32_t unicode,
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54 int x,
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55 int y,
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56 unsigned int width,
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57 unsigned int height,
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58 const Orthanc::IDynamicObject* payload) ORTHANC_OVERRIDE
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59 {
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60 int left = x + offsetX_;
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61 int top = y + offsetY_;
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62
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63 assert(payload != NULL);
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64 const DynamicBitmap& glyph = *dynamic_cast<const DynamicBitmap*>(payload);
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65
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66 assert(left >= 0 &&
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67 top >= 0 &&
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68 static_cast<unsigned int>(left) + width <= target_.GetWidth() &&
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69 static_cast<unsigned int>(top) + height <= target_.GetHeight() &&
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70 width == glyph.GetBitmap().GetWidth() &&
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71 height == glyph.GetBitmap().GetHeight());
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72
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73 {
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74 Orthanc::ImageAccessor region;
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75 target_.GetRegion(region, left, top, width, height);
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76 Orthanc::ImageProcessing::Copy(region, glyph.GetBitmap());
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77 }
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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 #if ORTHANC_ENABLE_LOCALE == 1
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83 void GlyphBitmapAlphabet::LoadCodepage(FontRenderer& renderer,
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84 Orthanc::Encoding codepage)
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85 {
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86 for (unsigned int i = 0; i < 256; i++)
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87 {
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88 uint32_t unicode;
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89 if (GlyphAlphabet::GetUnicodeFromCodepage(unicode, i, codepage))
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90 {
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91 AddUnicodeCharacter(renderer, unicode);
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92 }
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93 }
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94 }
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95 #endif
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96
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97
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98 Orthanc::ImageAccessor* GlyphBitmapAlphabet::RenderText(const std::string& utf8) const
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99 {
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100 TextBoundingBox box(alphabet_, utf8);
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101
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102 std::unique_ptr<Orthanc::ImageAccessor> bitmap(
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103 new Orthanc::Image(Orthanc::PixelFormat_Grayscale8,
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104 box.GetWidth(), box.GetHeight(),
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105 true /* force minimal pitch */));
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106
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107 Orthanc::ImageProcessing::Set(*bitmap, 0);
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108
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109 RenderTextVisitor visitor(*bitmap, *this, -box.GetLeft(), -box.GetTop());
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110 alphabet_.Apply(visitor, utf8);
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111
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112 return bitmap.release();
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113 }
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114 }