annotate Framework/Scene2D/OpenGLCompositor.cpp @ 1305:a5326ce4f24b broker

Trackers and measuring tools now use the viewport instead of ViewportController, so that proper locks can be used
author Benjamin Golinvaux <bgo@osimis.io>
date Wed, 04 Mar 2020 09:45:38 +0100
parents 7ec8fea061b9
children c38c89684d83
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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 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 #include "OpenGLCompositor.h"
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22
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23 #include "Internals/OpenGLAdvancedPolylineRenderer.h"
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24 #include "Internals/OpenGLBasicPolylineRenderer.h"
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25 #include "Internals/OpenGLColorTextureRenderer.h"
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26 #include "Internals/OpenGLFloatTextureRenderer.h"
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27 #include "Internals/OpenGLInfoPanelRenderer.h"
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28 #include "Internals/OpenGLLookupTableTextureRenderer.h"
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29 #include "Internals/OpenGLTextRenderer.h"
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30
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31 namespace OrthancStone
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32 {
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33 class OpenGLCompositor::Font : public boost::noncopyable
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34 {
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35 private:
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36 std::auto_ptr<GlyphTextureAlphabet> alphabet_;
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37 std::auto_ptr<OpenGL::OpenGLTexture> texture_;
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38
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39 public:
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40 Font(OpenGL::IOpenGLContext& context, const GlyphBitmapAlphabet& dict)
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41 {
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42 alphabet_.reset(new GlyphTextureAlphabet(dict));
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43 texture_.reset(new OpenGL::OpenGLTexture(context));
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44
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45 std::auto_ptr<Orthanc::ImageAccessor> bitmap(alphabet_->ReleaseTexture());
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46 texture_->Load(*bitmap, true /* enable linear interpolation */);
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47 }
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48
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49 OpenGL::OpenGLTexture& GetTexture() const
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50 {
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51 assert(texture_.get() != NULL);
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52 return *texture_;
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53 }
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54
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55 const GlyphTextureAlphabet& GetAlphabet() const
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56 {
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57 assert(alphabet_.get() != NULL);
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58 return *alphabet_;
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59 }
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60 };
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61
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62 const OpenGLCompositor::Font* OpenGLCompositor::GetFont(size_t fontIndex) const
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63 {
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64 Fonts::const_iterator found = fonts_.find(fontIndex);
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65
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66 if (found == fonts_.end())
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67 {
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68 return NULL; // Unknown font, nothing should be drawn
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69 }
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70 else
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71 {
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72 assert(found->second != NULL);
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73 return found->second;
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74 }
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75 }
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76
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77 Internals::CompositorHelper::ILayerRenderer* OpenGLCompositor::Create(const ISceneLayer& layer)
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78 {
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79 if (!context_.IsContextLost())
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80 {
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81 switch (layer.GetType())
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82 {
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83 case ISceneLayer::Type_InfoPanel:
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84 return new Internals::OpenGLInfoPanelRenderer
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85 (context_, colorTextureProgram_, dynamic_cast<const InfoPanelSceneLayer&>(layer));
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86
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87 case ISceneLayer::Type_ColorTexture:
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88 return new Internals::OpenGLColorTextureRenderer
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89 (context_, colorTextureProgram_, dynamic_cast<const ColorTextureSceneLayer&>(layer));
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90
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91 case ISceneLayer::Type_FloatTexture:
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92 return new Internals::OpenGLFloatTextureRenderer
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93 (context_, floatTextureProgram_, dynamic_cast<const FloatTextureSceneLayer&>(layer));
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94
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95 case ISceneLayer::Type_LookupTableTexture:
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96 return new Internals::OpenGLLookupTableTextureRenderer
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97 (context_, colorTextureProgram_, dynamic_cast<const LookupTableTextureSceneLayer&>(layer));
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98
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99 case ISceneLayer::Type_Polyline:
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100 return new Internals::OpenGLAdvancedPolylineRenderer
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101 (context_, linesProgram_, dynamic_cast<const PolylineSceneLayer&>(layer));
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102 //return new Internals::OpenGLBasicPolylineRenderer(context_, dynamic_cast<const PolylineSceneLayer&>(layer));
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103
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104 case ISceneLayer::Type_Text:
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105 {
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106 const TextSceneLayer& l = dynamic_cast<const TextSceneLayer&>(layer);
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107 const Font* font = GetFont(l.GetFontIndex());
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108 if (font == NULL)
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109 {
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110 LOG(WARNING) << "There is no font at index " << l.GetFontIndex();
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111 return NULL;
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112 }
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113 else
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114 {
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115 return new Internals::OpenGLTextRenderer
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116 (context_, textProgram_, font->GetAlphabet(), font->GetTexture(), l);
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117 }
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118 }
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119
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120 default:
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121 return NULL;
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122 }
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123 }
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124 else
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125 {
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126 // context is lost. returning null.
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127 return NULL;
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128 }
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129 }
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130
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131 OpenGLCompositor::OpenGLCompositor(OpenGL::IOpenGLContext& context) :
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132 context_(context),
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133 colorTextureProgram_(context),
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134 floatTextureProgram_(context),
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135 linesProgram_(context),
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136 textProgram_(context),
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137 canvasWidth_(0),
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138 canvasHeight_(0)
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139 {
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140 if (!context_.IsContextLost())
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141 {
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142 canvasWidth_ = context_.GetCanvasWidth();
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143 canvasHeight_ = context_.GetCanvasHeight();
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144 }
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145
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146 ResetScene();
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147 }
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148
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149 OpenGLCompositor::~OpenGLCompositor()
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150 {
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151 if (!context_.IsContextLost())
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152 {
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153 context_.MakeCurrent(); // this can throw if context lost!
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154 for (Fonts::iterator it = fonts_.begin(); it != fonts_.end(); ++it)
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155 {
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156 assert(it->second != NULL);
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157 delete it->second;
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158 }
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159 }
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160 }
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161
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162 void OpenGLCompositor::Refresh(const Scene2D& scene)
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163 {
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164 if (!context_.IsContextLost())
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165 {
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166 context_.MakeCurrent(); // this can throw if context lost!
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167
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168 canvasWidth_ = context_.GetCanvasWidth();
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169 canvasHeight_ = context_.GetCanvasHeight();
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170
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171 glViewport(0, 0, canvasWidth_, canvasHeight_);
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172 glClearColor(0, 0, 0, 1);
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173 glClear(GL_COLOR_BUFFER_BIT);
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174
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175 helper_->Refresh(scene, canvasWidth_, canvasHeight_);
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176
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177 context_.SwapBuffer();
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178 }
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179 }
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180
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181 void OpenGLCompositor::SetFont(size_t index,
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182 const GlyphBitmapAlphabet& dict)
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183 {
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184 if (!context_.IsContextLost())
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185 {
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186 context_.MakeCurrent(); // this can throw if context lost
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187
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188 std::auto_ptr<Font> font(new Font(context_, dict));
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189
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190 Fonts::iterator found = fonts_.find(index);
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191
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192 if (found == fonts_.end())
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193 {
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194 fonts_[index] = font.release();
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195 }
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196 else
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197 {
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198 assert(found->second != NULL);
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199 delete found->second;
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200
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201 found->second = font.release();
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202 }
594
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203 }
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204 }
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205
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206 #if ORTHANC_ENABLE_LOCALE == 1
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207 void OpenGLCompositor::SetFont(size_t index,
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208 Orthanc::EmbeddedResources::FileResourceId resource,
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209 unsigned int fontSize,
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210 Orthanc::Encoding codepage)
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211 {
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212 if (!context_.IsContextLost())
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213 {
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214 FontRenderer renderer;
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215 renderer.LoadFont(resource, fontSize);
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216
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217 GlyphBitmapAlphabet dict;
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218 dict.LoadCodepage(renderer, codepage);
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219
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220 SetFont(index, dict);
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221 }
594
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222 }
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223 #endif
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224 }