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annotate Samples/Sdl/RtViewer/RtViewerSdl.cpp @ 1404:3e644f6fadd4

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Three-viewport is now OK in SDL and Wasm
author Benjamin Golinvaux <bgo@osimis.io>
date Wed, 29 Apr 2020 22:06:24 +0200
parents 27e0a00bd3e8
children 5d7ee14dc1eb
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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 "RtViewerApp.h"
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22 #include "RtViewerView.h"
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23 #include "../SdlHelpers.h"
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24
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25 // Stone of Orthanc includes
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26 #include <Framework/Loaders/GenericLoadersContext.h>
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27 #include <Framework/OpenGL/SdlOpenGLContext.h>
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28 #include <Framework/StoneException.h>
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29 #include <Framework/StoneInitialization.h>
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30
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31 // Orthanc (a.o. for screenshot capture)
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32 #include <Core/Images/Image.h>
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33 #include <Core/Images/ImageProcessing.h>
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34 #include <Core/Images/PngWriter.h>
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35
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36
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37 #include <boost/program_options.hpp>
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38 #include <boost/shared_ptr.hpp>
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39
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40 // #include <boost/pointer_cast.hpp> this include might be necessary in more recent boost versions
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41
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42 #include <SDL.h>
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43
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44 #include <string>
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45
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46 static void GLAPIENTRY
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47 OpenGLMessageCallback(GLenum source,
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48 GLenum type,
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49 GLuint id,
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50 GLenum severity,
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51 GLsizei length,
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52 const GLchar* message,
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53 const void* userParam)
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54 {
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55 if (severity != GL_DEBUG_SEVERITY_NOTIFICATION)
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56 {
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57 fprintf(stderr, "GL CALLBACK: %s type = 0x%x, severity = 0x%x, message = %s\n",
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58 (type == GL_DEBUG_TYPE_ERROR ? "** GL ERROR **" : ""),
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59 type, severity, message);
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60 }
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61 }
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62
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63 namespace OrthancStone
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64 {
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65 void RtViewerView::EnableGLDebugOutput()
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66 {
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67 glEnable(GL_DEBUG_OUTPUT);
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68 glDebugMessageCallback(OpenGLMessageCallback, 0);
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69 }
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70
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71 boost::shared_ptr<IViewport> RtViewerView::CreateViewport(const std::string& canvasId)
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72 {
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73 // False means we do NOT let Windows treat this as a legacy application that needs to be scaled
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74 return SdlOpenGLViewport::Create(canvasId, 1024, 1024, false);
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75 }
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76
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77 void RtViewerApp::ProcessOptions(int argc, char* argv[])
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78 {
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79 namespace po = boost::program_options;
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80 po::options_description desc("Usage:");
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81
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82 desc.add_options()
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83 ("loglevel", po::value<std::string>()->default_value("WARNING"),
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84 "You can choose WARNING, INFO or TRACE for the logging level: Errors and warnings will always be displayed. (default: WARNING)")
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85
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86 ("orthanc", po::value<std::string>()->default_value("http://localhost:8042"),
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87 "Base URL of the Orthanc instance")
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88
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89 ("ctseries", po::value<std::string>()->default_value("a04ecf01-79b2fc33-58239f7e-ad9db983-28e81afa"),
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90 "Orthanc ID of the CT series to load")
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91
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92 ("rtdose", po::value<std::string>()->default_value("830a69ff-8e4b5ee3-b7f966c8-bccc20fb-d322dceb"),
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93 "Orthanc ID of the RTDOSE instance to load")
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94
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95 ("rtstruct", po::value<std::string>()->default_value("54460695-ba3885ee-ddf61ac0-f028e31d-a6e474d9"),
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96 "Orthanc ID of the RTSTRUCT instance to load")
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97 ;
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98
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99 po::variables_map vm;
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100 try
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101 {
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102 po::store(po::parse_command_line(argc, argv, desc), vm);
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103 po::notify(vm);
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104 }
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105 catch (std::exception& e)
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106 {
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107 std::cerr << "Please check your command line options! (\"" << e.what() << "\")" << std::endl;
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108 }
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109
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110 for (po::variables_map::iterator it = vm.begin(); it != vm.end(); ++it)
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111 {
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112 std::string key = it->first;
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113 const po::variable_value& value = it->second;
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114 const std::string& strValue = value.as<std::string>();
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115 SetArgument(key, strValue);
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116 }
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117 }
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118
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119 void RtViewerApp::RunSdl(int argc, char* argv[])
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120 {
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121 ProcessOptions(argc, argv);
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122
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123 /**
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124 Create the shared loaders context
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125 */
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126 loadersContext_.reset(new GenericLoadersContext(1, 4, 1));
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127
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128 // we are in SDL --> downcast to concrete type
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129 boost::shared_ptr<GenericLoadersContext> loadersContext = boost::dynamic_pointer_cast<GenericLoadersContext>(loadersContext_);
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130
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131 /**
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132 Url of the Orthanc instance
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133 Typically, in a native application (Qt, SDL), it will be an absolute URL like "http://localhost:8042". In
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134 wasm on the browser, it could be an absolute URL, provided you do not have cross-origin problems, or a relative
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135 URL. In our wasm samples, it is set to "..", because we set up either a reverse proxy or an Orthanc ServeFolders
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136 plugin that serves the main web application from an URL like "http://localhost:8042/rtviewer" (with ".." leading
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137 to the main Orthanc root URL)
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138 */
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139 std::string orthancUrl = arguments_["orthanc"];
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140
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141 {
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142 Orthanc::WebServiceParameters p;
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143 if (HasArgument("orthanc"))
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144 {
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145 p.SetUrl(orthancUrl);
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146 }
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147 if (HasArgument("user"))
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148 {
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149 ORTHANC_ASSERT(HasArgument("password"));
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150 p.SetCredentials(GetArgument("user"), GetArgument("password"));
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151 }
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152 else
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153 {
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154 ORTHANC_ASSERT(!HasArgument("password"));
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155 }
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156 loadersContext->SetOrthancParameters(p);
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157 }
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158
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159 loadersContext->StartOracle();
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160
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161 CreateLoaders();
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162
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163 /**
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164 Create viewports
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165 */
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166 CreateView("RtViewer Axial", VolumeProjection_Axial);
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167 CreateView("RtViewer Coronal", VolumeProjection_Coronal);
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168 CreateView("RtViewer Sagittal", VolumeProjection_Sagittal);
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169
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170 for (size_t i = 0; i < views_.size(); ++i)
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171 {
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172 views_[i]->PrepareViewport();
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173 views_[i]->EnableGLDebugOutput();
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174 }
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175
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176 DefaultViewportInteractor interactor;
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177
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178 /**
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179 It is very important that the Oracle (responsible for network I/O) be started before creating and firing the
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180 loaders, for any command scheduled by the loader before the oracle is started will be lost.
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181 */
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182 StartLoaders();
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183
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184
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185 std::vector<boost::shared_ptr<SdlViewport>> sdlViewports;
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186 for(size_t i = 0; i < views_.size(); ++i)
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187 {
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188 boost::shared_ptr<RtViewerView> view = views_[i];
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189 boost::shared_ptr<IViewport> viewport = view->GetViewport();
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190 boost::shared_ptr<SdlViewport> sdlViewport =
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191 boost::dynamic_pointer_cast<SdlViewport>(viewport);
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192 sdlViewports.push_back(sdlViewport);
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193 }
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194 OrthancStoneHelpers::SdlRunLoop(sdlViewports, interactor);
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195 loadersContext->StopOracle();
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196 }
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197
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198 void RtViewerView::TakeScreenshot(const std::string& target,
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199 unsigned int canvasWidth,
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200 unsigned int canvasHeight)
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201 {
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202 std::unique_ptr<IViewport::ILock> lock(viewport_->Lock());
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203 ViewportController& controller = lock->GetController();
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204 Scene2D& scene = controller.GetScene();
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205
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206 CairoCompositor compositor(canvasWidth, canvasHeight);
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207 compositor.SetFont(0, Orthanc::EmbeddedResources::UBUNTU_FONT, FONT_SIZE_0, Orthanc::Encoding_Latin1);
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208 compositor.Refresh(scene);
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209
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210 Orthanc::ImageAccessor canvas;
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211 compositor.GetCanvas().GetReadOnlyAccessor(canvas);
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212
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213 Orthanc::Image png(Orthanc::PixelFormat_RGB24, canvas.GetWidth(), canvas.GetHeight(), false);
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214 Orthanc::ImageProcessing::Convert(png, canvas);
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215
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216 Orthanc::PngWriter writer;
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217 writer.WriteToFile(target, png);
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218 }
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219 }
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220
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221 boost::weak_ptr<OrthancStone::RtViewerApp> g_app;
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222
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223 /**
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224 * IMPORTANT: The full arguments to "main()" are needed for SDL on
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225 * Windows. Otherwise, one gets the linking error "undefined reference
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226 * to `SDL_main'". https://wiki.libsdl.org/FAQWindows
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227 **/
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228 int main(int argc, char* argv[])
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229 {
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230 using namespace OrthancStone;
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231
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232 StoneInitialize();
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233
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234 try
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235 {
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236 boost::shared_ptr<RtViewerApp> app = RtViewerApp::Create();
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237 g_app = app;
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238 app->RunSdl(argc,argv);
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239 }
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240 catch (Orthanc::OrthancException& e)
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241 {
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242 LOG(ERROR) << "EXCEPTION: " << e.What();
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Benjamin Golinvaux <bgo@osimis.io>
parents: 1389
diff changeset
243 }
ffdb82850e98 Sdl run loop in /Common (might revert if need to customize)
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parents: 1389
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244
ffdb82850e98 Sdl run loop in /Common (might revert if need to customize)
Benjamin Golinvaux <bgo@osimis.io>
parents: 1389
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245 StoneFinalize();
ffdb82850e98 Sdl run loop in /Common (might revert if need to customize)
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parents: 1389
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246
ffdb82850e98 Sdl run loop in /Common (might revert if need to customize)
Benjamin Golinvaux <bgo@osimis.io>
parents: 1389
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247 return 0;
ffdb82850e98 Sdl run loop in /Common (might revert if need to customize)
Benjamin Golinvaux <bgo@osimis.io>
parents: 1389
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248 }
ffdb82850e98 Sdl run loop in /Common (might revert if need to customize)
Benjamin Golinvaux <bgo@osimis.io>
parents: 1389
diff changeset
249