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1085
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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) 2017-2019 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 Affero 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 * Affero 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 Affero General Public License
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18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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19 **/
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20
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21
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22 #include "TextRenderer.h"
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23
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1093
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24 #include "../Scene2D/CairoCompositor.h"
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25 #include "../Scene2D/ColorTextureSceneLayer.h"
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26 #include "../Scene2D/FloatTextureSceneLayer.h"
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27 #include "../Scene2D/TextSceneLayer.h"
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28 #include "../Fonts/GlyphBitmapAlphabet.h"
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29 #include "../Fonts/FontRenderer.h"
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1085
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30 #include <Core/Images/PngWriter.h>
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1086
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31 #include <Core/Toolbox.h>
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1085
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32
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33 #include "Core/Images/Image.h"
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34 #include "Core/Images/ImageProcessing.h"
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35
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36 namespace OrthancStone
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37 {
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38 Orthanc::ImageAccessor* TextRenderer::Render(Orthanc::EmbeddedResources::FileResourceId font,
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39 unsigned int fontSize,
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40 const std::string& utf8String
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41 )
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42 {
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43 FontRenderer renderer;
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44 renderer.LoadFont(font, fontSize);
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45
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46 // add each char to be rendered to the alphabet
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47 std::auto_ptr<GlyphBitmapAlphabet> alphabet(new GlyphBitmapAlphabet);
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48
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49 size_t posInString = 0;
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50 uint32_t unicode;
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51 size_t utf8CharLength;
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52
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53 while (posInString < utf8String.size())
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54 {
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55 Orthanc::Toolbox::Utf8ToUnicodeCharacter(unicode, utf8CharLength, utf8String, posInString);
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56 alphabet->AddUnicodeCharacter(renderer, unicode);
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57 posInString += utf8CharLength;
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58 }
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59
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60 return alphabet->RenderText(utf8String);
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61 }
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62
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63
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64 Orthanc::ImageAccessor* TextRenderer::RenderWithAlpha(Orthanc::EmbeddedResources::FileResourceId resource,
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65 unsigned int fontSize,
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66 const std::string& utf8String,
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67 uint8_t foreground)
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68 {
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69 std::auto_ptr<Orthanc::ImageAccessor> renderedText8(Render(resource, fontSize, utf8String));
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70 std::auto_ptr<Orthanc::Image> target(new Orthanc::Image(Orthanc::PixelFormat_RGBA32, renderedText8->GetWidth(), renderedText8->GetHeight(), true));
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71
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72 Orthanc::ImageProcessing::Set(*target, foreground, foreground, foreground, *renderedText8);
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73 return target.release();
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74 }
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75
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76
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77 // currently disabled because the background is actually not transparent once we use the Cairo Compositor !
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78 //
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79 // // renders text in color + a border with alpha in a RGBA32 image
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80 // Orthanc::ImageAccessor* TextRenderer::RenderWithAlpha(Orthanc::EmbeddedResources::FileResourceId resource,
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81 // unsigned int fontSize,
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82 // const std::string& utf8String,
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83 // uint8_t foreground,
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84 // uint8_t borderColor)
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85 // {
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86 // std::auto_ptr<Orthanc::ImageAccessor> renderedBorderAlpha(RenderWithAlpha(resource, fontSize, utf8String, borderColor));
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87 // std::auto_ptr<Orthanc::ImageAccessor> renderedTextAlpha(RenderWithAlpha(resource, fontSize, utf8String, foreground));
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88
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89 // unsigned int textWidth = renderedBorderAlpha->GetWidth();
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90 // unsigned int textHeight = renderedBorderAlpha->GetHeight();
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91
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92 // Scene2D targetScene;
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93 // std::auto_ptr<ColorTextureSceneLayer> borderLayerLeft(new ColorTextureSceneLayer(*renderedBorderAlpha));
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94 // std::auto_ptr<ColorTextureSceneLayer> borderLayerRight(new ColorTextureSceneLayer(*renderedBorderAlpha));
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95 // std::auto_ptr<ColorTextureSceneLayer> borderLayerTop(new ColorTextureSceneLayer(*renderedBorderAlpha));
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96 // std::auto_ptr<ColorTextureSceneLayer> borderLayerBottom(new ColorTextureSceneLayer(*renderedBorderAlpha));
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97 // std::auto_ptr<ColorTextureSceneLayer> textLayerCenter(new ColorTextureSceneLayer(*renderedTextAlpha));
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98
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99 // borderLayerLeft->SetOrigin(0, 1);
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100 // borderLayerRight->SetOrigin(2, 1);
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101 // borderLayerTop->SetOrigin(1, 0);
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102 // borderLayerBottom->SetOrigin(1, 2);
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103 // textLayerCenter->SetOrigin(1, 1);
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104 // targetScene.SetLayer(1, borderLayerLeft.release());
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105 // targetScene.SetLayer(2, borderLayerRight.release());
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106 // targetScene.SetLayer(3, borderLayerTop.release());
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107 // targetScene.SetLayer(4, borderLayerBottom.release());
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108 // targetScene.SetLayer(5, textLayerCenter.release());
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109
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110 // targetScene.FitContent(textWidth + 2, textHeight + 2);
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111 // CairoCompositor compositor(targetScene, textWidth + 2, textHeight + 2);
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112 // compositor.Refresh();
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113
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114 // Orthanc::ImageAccessor canvas;
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115 // compositor.GetCanvas().GetReadOnlyAccessor(canvas);
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116
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117 // std::auto_ptr<Orthanc::Image> output(new Orthanc::Image(Orthanc::PixelFormat_RGBA32, canvas.GetWidth(), canvas.GetHeight(), false));
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118 // Orthanc::ImageProcessing::Convert(*output, canvas);
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119 // return output.release();
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120 // }
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121 }
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