Mercurial > hg > orthanc-stone

annotate Applications/BasicApplication.cpp @ 221:d7b2590744f8 am

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wip: building applications reusable in SDL and WASM
author am@osimis.io
date Mon, 11 Jun 2018 14:01:02 +0200
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221
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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) 2017-2018 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 "IBasicApplication.h"
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23
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24 #include "../Framework/Toolbox/MessagingToolbox.h"
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25 #include "Sdl/SdlEngine.h"
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26
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27 #include <Core/Logging.h>
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28 #include <Core/HttpClient.h>
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29 #include <Plugins/Samples/Common/OrthancHttpConnection.h>
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30
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31 namespace OrthancStone
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32 {
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33 // Anonymous namespace to avoid clashes against other compilation modules
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34 namespace
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35 {
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36 class LogStatusBar : public IStatusBar
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37 {
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38 public:
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39 virtual void ClearMessage()
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40 {
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41 }
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42
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43 virtual void SetMessage(const std::string& message)
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44 {
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45 LOG(WARNING) << message;
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46 }
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47 };
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48 }
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49
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50
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51 #if ORTHANC_ENABLE_SDL == 1
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52 static void DeclareSdlCommandLineOptions(boost::program_options::options_description& options)
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53 {
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54 // Declare the supported parameters
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55 boost::program_options::options_description generic("Generic options");
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56 generic.add_options()
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57 ("help", "Display this help and exit")
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58 ("verbose", "Be verbose in logs")
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59 ("orthanc", boost::program_options::value<std::string>()->default_value("http://localhost:8042/"),
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60 "URL to the Orthanc server")
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61 ("username", "Username for the Orthanc server")
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62 ("password", "Password for the Orthanc server")
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63 ("https-verify", boost::program_options::value<bool>()->default_value(true), "Check HTTPS certificates")
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64 ;
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65
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66 options.add(generic);
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67
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68 boost::program_options::options_description sdl("SDL options");
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69 sdl.add_options()
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70 ("width", boost::program_options::value<int>()->default_value(1024), "Initial width of the SDL window")
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71 ("height", boost::program_options::value<int>()->default_value(768), "Initial height of the SDL window")
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72 ("opengl", boost::program_options::value<bool>()->default_value(true), "Enable OpenGL in SDL")
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73 ;
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74
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75 options.add(sdl);
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76 }
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77
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78
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79 int IBasicApplication::ExecuteWithSdl(IBasicApplication& application,
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80 int argc,
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81 char* argv[])
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82 {
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83 /******************************************************************
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84 * Initialize all the subcomponents of Orthanc Stone
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85 ******************************************************************/
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86
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87 Orthanc::Logging::Initialize();
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88 Orthanc::HttpClient::InitializeOpenSsl();
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89 Orthanc::HttpClient::GlobalInitialize();
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90 SdlWindow::GlobalInitialize();
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91
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92
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93 /******************************************************************
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94 * Declare and parse the command-line options of the application
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95 ******************************************************************/
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96
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97 boost::program_options::options_description options;
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98 DeclareSdlCommandLineOptions(options);
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99 application.DeclareCommandLineOptions(options);
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100
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101 boost::program_options::variables_map parameters;
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102 bool error = false;
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103
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104 try
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105 {
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106 boost::program_options::store(boost::program_options::command_line_parser(argc, argv).
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107 options(options).run(), parameters);
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108 boost::program_options::notify(parameters);
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109 }
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110 catch (boost::program_options::error& e)
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111 {
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112 LOG(ERROR) << "Error while parsing the command-line arguments: " << e.what();
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113 error = true;
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114 }
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115
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116
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117 /******************************************************************
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118 * Configure the application with the command-line parameters
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119 ******************************************************************/
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120
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121 if (error || parameters.count("help"))
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122 {
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123 std::cout << std::endl
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124 << "Usage: " << argv[0] << " [OPTION]..."
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125 << std::endl
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126 << "Orthanc, lightweight, RESTful DICOM server for healthcare and medical research."
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127 << std::endl << std::endl
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128 << "Demonstration application of Orthanc Stone using SDL."
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129 << std::endl;
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130
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131 std::cout << options << "\n";
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132 return error ? -1 : 0;
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133 }
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134
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135 if (parameters.count("https-verify") &&
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136 !parameters["https-verify"].as<bool>())
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137 {
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138 LOG(WARNING) << "Turning off verification of HTTPS certificates (unsafe)";
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139 Orthanc::HttpClient::ConfigureSsl(false, "");
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140 }
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141
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142 if (parameters.count("verbose"))
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143 {
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144 Orthanc::Logging::EnableInfoLevel(true);
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145 }
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146
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147 if (!parameters.count("width") ||
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148 !parameters.count("height") ||
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149 !parameters.count("opengl"))
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150 {
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151 LOG(ERROR) << "Parameter \"width\", \"height\" or \"opengl\" is missing";
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152 return -1;
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153 }
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154
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155 int w = parameters["width"].as<int>();
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156 int h = parameters["height"].as<int>();
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157 if (w <= 0 || h <= 0)
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158 {
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159 LOG(ERROR) << "Parameters \"width\" and \"height\" must be positive";
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160 return -1;
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161 }
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162
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163 unsigned int width = static_cast<unsigned int>(w);
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164 unsigned int height = static_cast<unsigned int>(h);
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165 LOG(WARNING) << "Initial display size: " << width << "x" << height;
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166
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167 bool opengl = parameters["opengl"].as<bool>();
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168 if (opengl)
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169 {
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170 LOG(WARNING) << "OpenGL is enabled, disable it with option \"--opengl=off\" if the application crashes";
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171 }
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172 else
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173 {
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174 LOG(WARNING) << "OpenGL is disabled, enable it with option \"--opengl=on\" for best performance";
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175 }
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176
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177 bool success = true;
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178 try
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179 {
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180 /****************************************************************
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181 * Initialize the connection to the Orthanc server
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182 ****************************************************************/
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183
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184 Orthanc::WebServiceParameters webService;
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185
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186 if (parameters.count("orthanc"))
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187 {
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188 webService.SetUrl(parameters["orthanc"].as<std::string>());
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189 }
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190
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191 if (parameters.count("username"))
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192 {
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193 webService.SetUsername(parameters["username"].as<std::string>());
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194 }
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195
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196 if (parameters.count("password"))
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197 {
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198 webService.SetPassword(parameters["password"].as<std::string>());
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199 }
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200
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201 LOG(WARNING) << "URL to the Orthanc REST API: " << webService.GetUrl();
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202
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203 {
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204 OrthancPlugins::OrthancHttpConnection orthanc(webService);
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205 if (!MessagingToolbox::CheckOrthancVersion(orthanc))
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206 {
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207 LOG(ERROR) << "Your version of Orthanc is incompatible with Stone of Orthanc, please upgrade";
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208 throw Orthanc::OrthancException(Orthanc::ErrorCode_NetworkProtocol);
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209 }
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210 }
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211
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212
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213 /****************************************************************
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214 * Initialize the application
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215 ****************************************************************/
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216
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217 LOG(WARNING) << "Creating the widgets of the application";
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218
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219 LogStatusBar statusBar;
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220 BasicApplicationContext context(webService);
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221
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222 application.Initialize(context, statusBar, parameters);
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223
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224 {
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225 BasicApplicationContext::ViewportLocker locker(context);
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226 locker.GetViewport().SetStatusBar(statusBar);
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227 }
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228
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229 std::string title = application.GetTitle();
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230 if (title.empty())
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231 {
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232 title = "Stone of Orthanc";
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233 }
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234
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235 {
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236 /**************************************************************
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237 * Run the application inside a SDL window
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238 **************************************************************/
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239
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240 LOG(WARNING) << "Starting the application";
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241
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242 SdlWindow window(title.c_str(), width, height, opengl);
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243 SdlEngine sdl(window, context);
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244
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245 {
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246 BasicApplicationContext::ViewportLocker locker(context);
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247 locker.GetViewport().Register(sdl); // (*)
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248 }
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249
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250 context.Start();
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251 sdl.Run();
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252
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253 LOG(WARNING) << "Stopping the application";
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254
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255 // Don't move the "Stop()" command below out of the block,
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256 // otherwise the application might crash, because the
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257 // "SdlEngine" is an observer of the viewport (*) and the
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258 // update thread started by "context.Start()" would call a
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259 // destructed object (the "SdlEngine" is deleted with the
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260 // lexical scope).
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261 context.Stop();
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262 }
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263
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264
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265 /****************************************************************
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266 * Finalize the application
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267 ****************************************************************/
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268
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269 LOG(WARNING) << "The application has stopped";
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270 application.Finalize();
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271 }
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272 catch (Orthanc::OrthancException& e)
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273 {
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274 LOG(ERROR) << "EXCEPTION: " << e.What();
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275 success = false;
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276 }
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277
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278
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279 /******************************************************************
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280 * Finalize all the subcomponents of Orthanc Stone
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281 ******************************************************************/
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282
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283 SdlWindow::GlobalFinalize();
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284 Orthanc::HttpClient::GlobalFinalize();
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285 Orthanc::HttpClient::FinalizeOpenSsl();
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286
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287 return (success ? 0 : -1);
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288 }
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289 #endif
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290
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291 }