Mercurial > hg > orthanc-stone
annotate OrthancStone/Sources/Scene2D/OpenGLCompositor.cpp @ 1871:7053b8a0aaec
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| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Tue, 11 Jan 2022 11:18:48 +0100 |
| parents | 3889ae96d2e9 |
| children | 07964689cb0b |
| rev | line source |
|---|---|
| 594 | 1 /** |
| 2 * Stone of Orthanc | |
| 3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
| 4 * Department, University Hospital of Liege, Belgium | |
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5 * Copyright (C) 2017-2022 Osimis S.A., Belgium |
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6 * Copyright (C) 2021-2022 Sebastien Jodogne, ICTEAM UCLouvain, Belgium |
| 594 | 7 * |
| 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 |
| 594 | 10 * as published by the Free Software Foundation, either version 3 of |
| 11 * the License, or (at your option) any later version. | |
| 12 * | |
| 13 * This program is distributed in the hope that it will be useful, but | |
| 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/>. |
| 594 | 21 **/ |
| 22 | |
| 23 #include "OpenGLCompositor.h" | |
| 24 | |
| 25 #include "Internals/OpenGLAdvancedPolylineRenderer.h" | |
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26 #include "Internals/OpenGLArrowRenderer.h" |
| 594 | 27 #include "Internals/OpenGLBasicPolylineRenderer.h" |
| 28 #include "Internals/OpenGLColorTextureRenderer.h" | |
| 29 #include "Internals/OpenGLFloatTextureRenderer.h" | |
| 30 #include "Internals/OpenGLInfoPanelRenderer.h" | |
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31 #include "Internals/OpenGLLookupTableTextureRenderer.h" |
| 594 | 32 #include "Internals/OpenGLTextRenderer.h" |
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33 #include "Internals/MacroLayerRenderer.h" |
| 594 | 34 |
| 1793 | 35 #include <OrthancException.h> |
| 36 | |
| 594 | 37 namespace OrthancStone |
| 38 { | |
| 39 class OpenGLCompositor::Font : public boost::noncopyable | |
| 40 { | |
| 41 private: | |
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42 std::unique_ptr<GlyphTextureAlphabet> alphabet_; |
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43 std::unique_ptr<OpenGL::OpenGLTexture> texture_; |
| 594 | 44 |
| 45 public: | |
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46 Font(OpenGL::IOpenGLContext& context, const GlyphBitmapAlphabet& dict) |
| 594 | 47 { |
| 48 alphabet_.reset(new GlyphTextureAlphabet(dict)); | |
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49 texture_.reset(new OpenGL::OpenGLTexture(context)); |
| 594 | 50 |
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51 std::unique_ptr<Orthanc::ImageAccessor> bitmap(alphabet_->ReleaseTexture()); |
| 594 | 52 texture_->Load(*bitmap, true /* enable linear interpolation */); |
| 53 } | |
| 54 | |
| 55 OpenGL::OpenGLTexture& GetTexture() const | |
| 56 { | |
| 57 assert(texture_.get() != NULL); | |
| 58 return *texture_; | |
| 59 } | |
| 60 | |
| 61 const GlyphTextureAlphabet& GetAlphabet() const | |
| 62 { | |
| 63 assert(alphabet_.get() != NULL); | |
| 64 return *alphabet_; | |
| 65 } | |
| 66 }; | |
| 67 | |
| 68 const OpenGLCompositor::Font* OpenGLCompositor::GetFont(size_t fontIndex) const | |
| 69 { | |
| 70 Fonts::const_iterator found = fonts_.find(fontIndex); | |
| 71 | |
| 72 if (found == fonts_.end()) | |
| 73 { | |
| 74 return NULL; // Unknown font, nothing should be drawn | |
| 75 } | |
| 76 else | |
| 77 { | |
| 78 assert(found->second != NULL); | |
| 79 return found->second; | |
| 80 } | |
| 81 } | |
| 82 | |
| 83 Internals::CompositorHelper::ILayerRenderer* OpenGLCompositor::Create(const ISceneLayer& layer) | |
| 84 { | |
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85 if (!context_.IsContextLost()) |
| 594 | 86 { |
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87 switch (layer.GetType()) |
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88 { |
| 594 | 89 case ISceneLayer::Type_InfoPanel: |
| 90 return new Internals::OpenGLInfoPanelRenderer | |
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91 (context_, colorTextureProgram_, dynamic_cast<const InfoPanelSceneLayer&>(layer)); |
| 594 | 92 |
| 93 case ISceneLayer::Type_ColorTexture: | |
| 94 return new Internals::OpenGLColorTextureRenderer | |
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95 (context_, colorTextureProgram_, dynamic_cast<const ColorTextureSceneLayer&>(layer)); |
| 594 | 96 |
| 97 case ISceneLayer::Type_FloatTexture: | |
| 98 return new Internals::OpenGLFloatTextureRenderer | |
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99 (context_, floatTextureProgram_, dynamic_cast<const FloatTextureSceneLayer&>(layer)); |
| 594 | 100 |
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101 case ISceneLayer::Type_LookupTableTexture: |
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102 return new Internals::OpenGLLookupTableTextureRenderer |
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103 (context_, colorTextureProgram_, dynamic_cast<const LookupTableTextureSceneLayer&>(layer)); |
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104 |
| 594 | 105 case ISceneLayer::Type_Polyline: |
| 106 return new Internals::OpenGLAdvancedPolylineRenderer | |
| 1571 | 107 (context_, linesProgram_, dynamic_cast<const PolylineSceneLayer&>(layer)); |
| 594 | 108 //return new Internals::OpenGLBasicPolylineRenderer(context_, dynamic_cast<const PolylineSceneLayer&>(layer)); |
| 109 | |
| 110 case ISceneLayer::Type_Text: | |
| 111 { | |
| 112 const TextSceneLayer& l = dynamic_cast<const TextSceneLayer&>(layer); | |
| 113 const Font* font = GetFont(l.GetFontIndex()); | |
| 114 if (font == NULL) | |
| 115 { | |
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116 LOG(WARNING) << "There is no font at index " << l.GetFontIndex(); |
| 594 | 117 return NULL; |
| 118 } | |
| 119 else | |
| 120 { | |
| 121 return new Internals::OpenGLTextRenderer | |
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122 (context_, textProgram_, font->GetAlphabet(), font->GetTexture(), l); |
| 594 | 123 } |
| 124 } | |
| 125 | |
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126 case ISceneLayer::Type_Macro: |
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127 return new Internals::MacroLayerRenderer(*this, layer); |
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128 |
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129 case ISceneLayer::Type_Arrow: |
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130 return new Internals::OpenGLArrowRenderer |
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131 (context_, linesProgram_, dynamic_cast<const ArrowSceneLayer&>(layer)); |
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132 |
| 594 | 133 default: |
| 134 return NULL; | |
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135 } |
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136 } |
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137 else |
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138 { |
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139 // context is lost. returning null. |
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140 return NULL; |
| 594 | 141 } |
| 142 } | |
| 143 | |
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144 OpenGLCompositor::OpenGLCompositor(OpenGL::IOpenGLContext& context) : |
| 594 | 145 context_(context), |
| 146 colorTextureProgram_(context), | |
| 147 floatTextureProgram_(context), | |
| 148 linesProgram_(context), | |
| 149 textProgram_(context), | |
| 150 canvasWidth_(0), | |
| 151 canvasHeight_(0) | |
| 152 { | |
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153 ResetScene(); |
| 594 | 154 } |
| 155 | |
| 156 OpenGLCompositor::~OpenGLCompositor() | |
| 157 { | |
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158 if (!context_.IsContextLost()) |
| 594 | 159 { |
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160 try |
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161 { |
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162 try |
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163 { |
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164 context_.MakeCurrent(); // this can throw if context lost! |
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165 } |
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166 catch (...) |
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167 { |
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168 LOG(ERROR) << "context_.MakeCurrent() failed in OpenGLCompositor::~OpenGLCompositor()!"; |
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169 } |
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170 |
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171 for (Fonts::iterator it = fonts_.begin(); it != fonts_.end(); ++it) |
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172 { |
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173 try |
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174 { |
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175 |
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176 assert(it->second != NULL); |
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177 delete it->second; |
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178 } |
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179 catch (...) |
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180 { |
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181 LOG(ERROR) << "Exception thrown while deleting OpenGL-based font!"; |
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182 } |
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183 } |
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184 } |
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185 catch (...) |
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186 { |
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187 // logging threw an exception! |
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188 } |
| 594 | 189 } |
| 190 } | |
| 191 | |
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192 void OpenGLCompositor::Refresh(const Scene2D& scene) |
| 594 | 193 { |
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194 if (!context_.IsContextLost()) |
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195 { |
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196 context_.MakeCurrent(); // this can throw if context lost! |
| 594 | 197 |
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198 glViewport(0, 0, canvasWidth_, canvasHeight_); |
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199 glClearColor(0, 0, 0, 1); |
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200 glClear(GL_COLOR_BUFFER_BIT); |
| 594 | 201 |
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202 helper_->Refresh(scene, canvasWidth_, canvasHeight_); |
| 594 | 203 |
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204 context_.SwapBuffer(); |
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205 } |
| 594 | 206 } |
| 207 | |
| 208 void OpenGLCompositor::SetFont(size_t index, | |
| 209 const GlyphBitmapAlphabet& dict) | |
| 210 { | |
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211 if (!context_.IsContextLost()) |
| 594 | 212 { |
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213 context_.MakeCurrent(); // this can throw if context lost |
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214 |
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215 std::unique_ptr<Font> font(new Font(context_, dict)); |
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216 |
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217 Fonts::iterator found = fonts_.find(index); |
| 594 | 218 |
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219 if (found == fonts_.end()) |
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220 { |
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221 fonts_[index] = font.release(); |
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222 } |
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223 else |
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224 { |
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225 assert(found->second != NULL); |
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226 delete found->second; |
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227 |
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228 found->second = font.release(); |
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229 } |
| 594 | 230 } |
| 231 } | |
| 232 | |
| 233 #if ORTHANC_ENABLE_LOCALE == 1 | |
| 234 void OpenGLCompositor::SetFont(size_t index, | |
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235 const std::string& ttf, |
| 594 | 236 unsigned int fontSize, |
| 237 Orthanc::Encoding codepage) | |
| 238 { | |
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239 if (!context_.IsContextLost()) |
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240 { |
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241 FontRenderer renderer; |
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242 renderer.LoadFont(ttf, fontSize); |
| 594 | 243 |
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244 GlyphBitmapAlphabet dict; |
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245 dict.LoadCodepage(renderer, codepage); |
| 594 | 246 |
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247 SetFont(index, dict); |
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248 } |
| 594 | 249 } |
| 250 #endif | |
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251 |
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252 |
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253 void OpenGLCompositor::SetCanvasSize(unsigned int canvasWidth, |
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254 unsigned int canvasHeight) |
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255 { |
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256 canvasWidth_ = canvasWidth; |
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257 canvasHeight_ = canvasHeight; |
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258 } |
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259 |
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260 |
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261 #if ORTHANC_ENABLE_LOCALE == 1 |
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262 TextBoundingBox* OpenGLCompositor::ComputeTextBoundingBox(size_t fontIndex, |
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263 const std::string& utf8) |
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264 { |
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265 Fonts::const_iterator found = fonts_.find(fontIndex); |
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266 |
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267 if (found == fonts_.end()) |
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268 { |
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269 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange, |
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270 "No such font: " + boost::lexical_cast<std::string>(fontIndex)); |
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271 } |
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272 else |
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273 { |
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274 assert(found->second != NULL); |
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275 return new TextBoundingBox(found->second->GetAlphabet().GetAlphabet(), utf8); |
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276 } |
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277 } |
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278 #endif |
| 594 | 279 } |