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annotate Samples/Sdl/RtViewer/RtViewerSdl.cpp @ 1393:27e0a00bd3e8

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RtViewer SingleFrameViewer OK : wasm SDL single viewport other viewports ongoing
author Benjamin Golinvaux <bgo@osimis.io>
date Wed, 29 Apr 2020 15:54:18 +0200
parents ffdb82850e98
children 3e644f6fadd4
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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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 "RtViewer.h"
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22 #include "../SdlHelpers.h"
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23
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24 // Stone of Orthanc includes
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25 #include <Framework/Loaders/GenericLoadersContext.h>
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26 #include <Framework/OpenGL/SdlOpenGLContext.h>
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27 #include <Framework/StoneException.h>
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28 #include <Framework/StoneInitialization.h>
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29
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30 // Orthanc (a.o. for screenshot capture)
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31 #include <Core/Images/Image.h>
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32 #include <Core/Images/ImageProcessing.h>
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33 #include <Core/Images/PngWriter.h>
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34
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36 #include <boost/program_options.hpp>
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37 #include <boost/shared_ptr.hpp>
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38
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39 // #include <boost/pointer_cast.hpp> this include might be necessary in more recent boost versions
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40
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41 #include <SDL.h>
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42
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43 #include <string>
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44
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45 static void GLAPIENTRY
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46 OpenGLMessageCallback(GLenum source,
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47 GLenum type,
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48 GLuint id,
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49 GLenum severity,
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50 GLsizei length,
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51 const GLchar* message,
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52 const void* userParam)
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53 {
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54 if (severity != GL_DEBUG_SEVERITY_NOTIFICATION)
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55 {
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56 fprintf(stderr, "GL CALLBACK: %s type = 0x%x, severity = 0x%x, message = %s\n",
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57 (type == GL_DEBUG_TYPE_ERROR ? "** GL ERROR **" : ""),
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58 type, severity, message);
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59 }
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60 }
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61
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62 namespace OrthancStone
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63 {
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64 void RtViewerApp::CreateViewport()
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65 {
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66 // False means we do NOT let Windows treat this as a legacy application that needs to be scaled
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67 viewport_ = SdlOpenGLViewport::Create("CT RTDOSE RTSTRUCT viewer", 1024, 1024, false);
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68 }
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69
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70 void RtViewerApp::ProcessOptions(int argc, char* argv[])
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71 {
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72 namespace po = boost::program_options;
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73 po::options_description desc("Usage:");
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74
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75 desc.add_options()
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76 ("loglevel", po::value<std::string>()->default_value("WARNING"),
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77 "You can choose WARNING, INFO or TRACE for the logging level: Errors and warnings will always be displayed. (default: WARNING)")
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78
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79 ("orthanc", po::value<std::string>()->default_value("http://localhost:8042"),
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80 "Base URL of the Orthanc instance")
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81
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82 ("ctseries", po::value<std::string>()->default_value("a04ecf01-79b2fc33-58239f7e-ad9db983-28e81afa"),
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83 "Orthanc ID of the CT series to load")
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84
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85 ("rtdose", po::value<std::string>()->default_value("830a69ff-8e4b5ee3-b7f966c8-bccc20fb-d322dceb"),
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86 "Orthanc ID of the RTDOSE instance to load")
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87
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88 ("rtstruct", po::value<std::string>()->default_value("54460695-ba3885ee-ddf61ac0-f028e31d-a6e474d9"),
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89 "Orthanc ID of the RTSTRUCT instance to load")
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90 ;
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91
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92 po::variables_map vm;
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93 try
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94 {
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95 po::store(po::parse_command_line(argc, argv, desc), vm);
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96 po::notify(vm);
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97 }
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98 catch (std::exception& e)
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99 {
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100 std::cerr << "Please check your command line options! (\"" << e.what() << "\")" << std::endl;
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101 }
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102
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103 for (po::variables_map::iterator it = vm.begin(); it != vm.end(); ++it)
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104 {
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105 std::string key = it->first;
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106 const po::variable_value& value = it->second;
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107 const std::string& strValue = value.as<std::string>();
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108 SetArgument(key, strValue);
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109 }
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110 }
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111
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112 void RtViewerApp::RunSdl(int argc, char* argv[])
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113 {
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114 ProcessOptions(argc, argv);
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115
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116 {
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117 std::unique_ptr<IViewport::ILock> lock(viewport_->Lock());
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118 ViewportController& controller = lock->GetController();
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119 Scene2D& scene = controller.GetScene();
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120 ICompositor& compositor = lock->GetCompositor();
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121
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122 // False means we do NOT let a hi-DPI aware desktop managedr treat this as a legacy application that requires
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123 // scaling.
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124 controller.FitContent(compositor.GetCanvasWidth(), compositor.GetCanvasHeight());
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125
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126 glEnable(GL_DEBUG_OUTPUT);
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127 glDebugMessageCallback(OpenGLMessageCallback, 0);
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128
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129 compositor.SetFont(0, Orthanc::EmbeddedResources::UBUNTU_FONT,
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130 FONT_SIZE_0, Orthanc::Encoding_Latin1);
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131 compositor.SetFont(1, Orthanc::EmbeddedResources::UBUNTU_FONT,
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132 FONT_SIZE_1, Orthanc::Encoding_Latin1);
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133 }
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134
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135 /**
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136 Create the shared loaders context
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137 */
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138 loadersContext_.reset(new GenericLoadersContext(1, 4, 1));
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139
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140 // we are in SDL --> downcast to concrete type
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141 boost::shared_ptr<GenericLoadersContext> loadersContext = boost::dynamic_pointer_cast<GenericLoadersContext>(loadersContext_);
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142
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143 /**
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144 Url of the Orthanc instance
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145 Typically, in a native application (Qt, SDL), it will be an absolute URL like "http://localhost:8042". In
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146 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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147 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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148 plugin that serves the main web application from an URL like "http://localhost:8042/rtviewer" (with ".." leading
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149 to the main Orthanc root URL)
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150 */
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151 std::string orthancUrl = arguments_["orthanc"];
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152
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153 {
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154 Orthanc::WebServiceParameters p;
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155 if (HasArgument("orthanc"))
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156 {
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157 p.SetUrl(orthancUrl);
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158 }
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159 if (HasArgument("user"))
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160 {
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161 ORTHANC_ASSERT(HasArgument("password"));
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162 p.SetCredentials(GetArgument("user"), GetArgument("password"));
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163 }
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164 else
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165 {
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166 ORTHANC_ASSERT(!HasArgument("password"));
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167 }
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168 loadersContext->SetOrthancParameters(p);
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169 }
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170
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171 loadersContext->StartOracle();
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172
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173 /**
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174 It is very important that the Oracle (responsible for network I/O) be started before creating and firing the
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175 loaders, for any command scheduled by the loader before the oracle is started will be lost.
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176 */
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177 PrepareLoadersAndSlicers();
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178
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179 DefaultViewportInteractor interactor;
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180
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181 boost::shared_ptr<SdlViewport> viewport = boost::dynamic_pointer_cast<SdlViewport>(viewport_);
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182
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183 OrthancStoneHelpers::SdlRunLoop(viewport, interactor);
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184
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185 loadersContext->StopOracle();
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186 }
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187
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188 void RtViewerApp::TakeScreenshot(const std::string& target,
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189 unsigned int canvasWidth,
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190 unsigned int canvasHeight)
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191 {
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192 std::unique_ptr<IViewport::ILock> lock(viewport_->Lock());
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193 ViewportController& controller = lock->GetController();
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194 Scene2D& scene = controller.GetScene();
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195
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196 CairoCompositor compositor(canvasWidth, canvasHeight);
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197 compositor.SetFont(0, Orthanc::EmbeddedResources::UBUNTU_FONT, FONT_SIZE_0, Orthanc::Encoding_Latin1);
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198 compositor.Refresh(scene);
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199
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200 Orthanc::ImageAccessor canvas;
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201 compositor.GetCanvas().GetReadOnlyAccessor(canvas);
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202
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203 Orthanc::Image png(Orthanc::PixelFormat_RGB24, canvas.GetWidth(), canvas.GetHeight(), false);
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204 Orthanc::ImageProcessing::Convert(png, canvas);
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205
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206 Orthanc::PngWriter writer;
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207 writer.WriteToFile(target, png);
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208 }
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209
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210
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211 #if 0
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212 void RtViewerApp::HandleApplicationEvent(
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213 const SDL_Event& event)
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214 {
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215 //DisplayInfoText();
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216
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217 std::unique_ptr<IViewport::ILock> lock(viewport_->Lock());
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218 ViewportController& controller = lock->GetController();
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219 Scene2D& scene = controller.GetScene();
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220 ICompositor& compositor = lock->GetCompositor();
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221
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222 if (event.type == SDL_MOUSEMOTION)
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223 {
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224 int scancodeCount = 0;
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225 const uint8_t* keyboardState = SDL_GetKeyboardState(&scancodeCount);
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226
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227 if (activeTracker_.get() == NULL &&
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228 SDL_SCANCODE_LALT < scancodeCount &&
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229 keyboardState[SDL_SCANCODE_LALT])
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230 {
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231 // The "left-ctrl" key is down, while no tracker is present
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232 // Let's display the info text
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233 PointerEvent e;
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234 e.AddPosition(compositor.GetPixelCenterCoordinates(
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235 event.button.x, event.button.y));
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236
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237 DisplayFloatingCtrlInfoText(e);
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238 }
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239 else
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240 {
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241 HideInfoText();
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242 //LOG(TRACE) << "(event.type == SDL_MOUSEMOTION)";
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243 if (activeTracker_.get() != NULL)
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244 {
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245 //LOG(TRACE) << "(activeTracker_.get() != NULL)";
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246 PointerEvent e;
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247 e.AddPosition(compositor.GetPixelCenterCoordinates(
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248 event.button.x, event.button.y));
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249
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250 //LOG(TRACE) << "event.button.x = " << event.button.x << " " <<
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251 // "event.button.y = " << event.button.y;
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252 LOG(TRACE) << "activeTracker_->PointerMove(e); " <<
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253 e.GetMainPosition().GetX() << " " << e.GetMainPosition().GetY();
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254
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255 activeTracker_->PointerMove(e);
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256 if (!activeTracker_->IsAlive())
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257 activeTracker_.reset();
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258 }
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259 }
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260 }
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261 else if (event.type == SDL_MOUSEBUTTONUP)
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262 {
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263 if (activeTracker_)
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264 {
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265 PointerEvent e;
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266 e.AddPosition(compositor.GetPixelCenterCoordinates(event.button.x, event.button.y));
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267 activeTracker_->PointerUp(e);
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268 if (!activeTracker_->IsAlive())
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269 activeTracker_.reset();
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270 }
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271 }
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272 else if (event.type == SDL_MOUSEBUTTONDOWN)
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273 {
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274 PointerEvent e;
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275 e.AddPosition(compositor.GetPixelCenterCoordinates(
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276 event.button.x, event.button.y));
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277 if (activeTracker_)
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278 {
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279 activeTracker_->PointerDown(e);
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280 if (!activeTracker_->IsAlive())
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281 activeTracker_.reset();
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282 }
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283 else
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284 {
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285 // we ATTEMPT to create a tracker if need be
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286 activeTracker_ = CreateSuitableTracker(event, e);
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287 }
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288 }
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289 else if (event.type == SDL_KEYDOWN &&
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290 event.key.repeat == 0 /* Ignore key bounce */)
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291 {
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292 switch (event.key.keysym.sym)
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293 {
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294 case SDLK_ESCAPE:
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295 if (activeTracker_)
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296 {
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297 activeTracker_->Cancel();
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298 if (!activeTracker_->IsAlive())
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299 activeTracker_.reset();
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300 }
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301 break;
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302
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303 case SDLK_r:
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304 UpdateLayers();
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305 {
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306 std::unique_ptr<IViewport::ILock> lock(viewport_->Lock());
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307 lock->Invalidate();
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308 }
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309 break;
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310
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311 case SDLK_s:
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312 compositor.FitContent(scene);
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313 break;
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314
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315 case SDLK_t:
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316 if (!activeTracker_)
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317 SelectNextTool();
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318 else
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319 {
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320 LOG(WARNING) << "You cannot change the active tool when an interaction"
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321 " is taking place";
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322 }
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323 break;
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324
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325 case SDLK_z:
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326 LOG(TRACE) << "SDLK_z has been pressed. event.key.keysym.mod == " << event.key.keysym.mod;
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327 if (event.key.keysym.mod & KMOD_CTRL)
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328 {
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329 if (controller.CanUndo())
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330 {
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331 LOG(TRACE) << "Undoing...";
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332 controller.Undo();
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333 }
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334 else
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335 {
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336 LOG(WARNING) << "Nothing to undo!!!";
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337 }
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338 }
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339 break;
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340
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341 case SDLK_y:
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342 LOG(TRACE) << "SDLK_y has been pressed. event.key.keysym.mod == " << event.key.keysym.mod;
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343 if (event.key.keysym.mod & KMOD_CTRL)
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344 {
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345 if (controller.CanRedo())
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346 {
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347 LOG(TRACE) << "Redoing...";
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348 controller.Redo();
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349 }
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350 else
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351 {
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diff changeset
352 LOG(WARNING) << "Nothing to redo!!!";
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353 }
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354 }
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355 break;
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356
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357 case SDLK_c:
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358 TakeScreenshot(
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359 "screenshot.png",
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360 compositor.GetCanvasWidth(),
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361 compositor.GetCanvasHeight());
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362 break;
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363
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diff changeset
364 default:
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365 break;
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366 }
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367 }
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368 else if (viewport_->IsRefreshEvent(event))
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369 {
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370 // the viewport has been invalidated and requires repaint
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371 viewport_->Paint();
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372 }
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373 }
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374 #endif
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375
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376 #if 0
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377 void RtViewerApp::RunSdl(int argc, char* argv[])
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378 {
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379 ProcessOptions(argc, argv);
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380
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381 {
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382 std::unique_ptr<IViewport::ILock> lock(viewport_->Lock());
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383 ViewportController& controller = lock->GetController();
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384 Scene2D& scene = controller.GetScene();
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385 ICompositor& compositor = lock->GetCompositor();
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386
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387 // False means we do NOT let a hi-DPI aware desktop managedr treat this as a legacy application that requires
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388 // scaling.
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389 controller.FitContent(compositor.GetCanvasWidth(), compositor.GetCanvasHeight());
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390
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391 glEnable(GL_DEBUG_OUTPUT);
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392 glDebugMessageCallback(OpenGLMessageCallback, 0);
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393
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394 compositor.SetFont(0, Orthanc::EmbeddedResources::UBUNTU_FONT,
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395 FONT_SIZE_0, Orthanc::Encoding_Latin1);
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396 compositor.SetFont(1, Orthanc::EmbeddedResources::UBUNTU_FONT,
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397 FONT_SIZE_1, Orthanc::Encoding_Latin1);
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398 }
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399 //////// from loader
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400
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401 loadersContext_.reset(new GenericLoadersContext(1, 4, 1));
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402 loadersContext_->StartOracle();
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403
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404 /**
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405 It is very important that the Oracle (responsible for network I/O) be started before creating and firing the
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406 loaders, for any command scheduled by the loader before the oracle is started will be lost.
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407 */
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408 PrepareLoadersAndSlicers();
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409
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410 bool stopApplication = false;
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411
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412 while (!stopApplication)
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413 {
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414 SDL_Event event;
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415 while (!stopApplication && SDL_PollEvent(&event))
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416 {
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417 if (event.type == SDL_QUIT)
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418 {
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419 stopApplication = true;
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420 break;
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421 }
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422 else if (event.type == SDL_WINDOWEVENT &&
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423 event.window.event == SDL_WINDOWEVENT_SIZE_CHANGED)
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424 {
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425 DisableTracker();
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426 }
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427 else if (event.type == SDL_KEYDOWN &&
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428 event.key.repeat == 0 /* Ignore key bounce */)
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429 {
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430 switch (event.key.keysym.sym)
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431 {
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432 case SDLK_f:
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433 // TODO: implement GetWindow to be able to do:
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434 // viewport_->GetWindow().ToggleMaximize();
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435 ORTHANC_ASSERT(false, "Please implement GetWindow()");
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436 break;
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437 case SDLK_q:
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438 stopApplication = true;
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439 break;
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440 default:
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441 break;
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442 }
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443 }
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444 // the code above is rather application-neutral.
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445 // the following call handles events specific to the application
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446 HandleApplicationEvent(event);
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447 }
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448 SDL_Delay(1);
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449 }
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450 loadersContext_->StopOracle();
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451 }
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452 #endif
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453
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454 #if 0
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455 boost::shared_ptr<IFlexiblePointerTracker> RtViewerApp::CreateSuitableTracker(
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456 const SDL_Event& event,
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457 const PointerEvent& e)
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458 {
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459 std::unique_ptr<IViewport::ILock> lock(viewport_->Lock());
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460 ViewportController& controller = lock->GetController();
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461 Scene2D& scene = controller.GetScene();
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462 ICompositor& compositor = lock->GetCompositor();
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463
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464 using namespace Orthanc;
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465
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466 switch (event.button.button)
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467 {
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468 case SDL_BUTTON_MIDDLE:
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469 return boost::shared_ptr<IFlexiblePointerTracker>(new PanSceneTracker
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470 (viewport_, e));
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471
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472 case SDL_BUTTON_RIGHT:
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473 return boost::shared_ptr<IFlexiblePointerTracker>(new ZoomSceneTracker
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474 (viewport_, e, compositor.GetCanvasHeight()));
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475
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476 case SDL_BUTTON_LEFT:
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477 {
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478 //LOG(TRACE) << "CreateSuitableTracker: case SDL_BUTTON_LEFT:";
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479 // TODO: we need to iterate on the set of measuring tool and perform
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480 // a hit test to check if a tracker needs to be created for edition.
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481 // Otherwise, depending upon the active tool, we might want to create
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482 // a "measuring tool creation" tracker
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483
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484 // TODO: if there are conflicts, we should prefer a tracker that
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485 // pertains to the type of measuring tool currently selected (TBD?)
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486 boost::shared_ptr<IFlexiblePointerTracker> hitTestTracker = TrackerHitTest(e);
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487
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488 if (hitTestTracker != NULL)
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489 {
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490 //LOG(TRACE) << "hitTestTracker != NULL";
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491 return hitTestTracker;
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492 }
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493 else
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494 {
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495 switch (currentTool_)
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496 {
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497 case RtViewerGuiTool_Rotate:
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498 //LOG(TRACE) << "Creating RotateSceneTracker";
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499 return boost::shared_ptr<IFlexiblePointerTracker>(new RotateSceneTracker(viewport_, e));
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500 case RtViewerGuiTool_Pan:
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501 return boost::shared_ptr<IFlexiblePointerTracker>(new PanSceneTracker(viewport_, e));
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502 case RtViewerGuiTool_Zoom:
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503 return boost::shared_ptr<IFlexiblePointerTracker>(new ZoomSceneTracker(viewport_, e, compositor.GetCanvasHeight()));
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504 //case GuiTool_AngleMeasure:
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505 // return new AngleMeasureTracker(GetScene(), e);
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506 //case GuiTool_CircleMeasure:
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507 // return new CircleMeasureTracker(GetScene(), e);
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508 //case GuiTool_EllipseMeasure:
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509 // return new EllipseMeasureTracker(GetScene(), e);
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510 case RtViewerGuiTool_LineMeasure:
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511 return boost::shared_ptr<IFlexiblePointerTracker>(new CreateLineMeasureTracker(viewport_, e));
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512 case RtViewerGuiTool_AngleMeasure:
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513 return boost::shared_ptr<IFlexiblePointerTracker>(new CreateAngleMeasureTracker(viewport_, e));
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514 case RtViewerGuiTool_CircleMeasure:
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515 LOG(ERROR) << "Not implemented yet!";
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516 return boost::shared_ptr<IFlexiblePointerTracker>();
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517 case RtViewerGuiTool_EllipseMeasure:
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518 LOG(ERROR) << "Not implemented yet!";
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519 return boost::shared_ptr<IFlexiblePointerTracker>();
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520 default:
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521 throw OrthancException(ErrorCode_InternalError, "Wrong tool!");
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522 }
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523 }
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524 }
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525 default:
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526 return boost::shared_ptr<IFlexiblePointerTracker>();
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527 }
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528 }
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529 #endif
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530
1386
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531 }
1392
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532
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533 boost::weak_ptr<OrthancStone::RtViewerApp> g_app;
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534
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535 /**
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536 * IMPORTANT: The full arguments to "main()" are needed for SDL on
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537 * Windows. Otherwise, one gets the linking error "undefined reference
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538 * to `SDL_main'". https://wiki.libsdl.org/FAQWindows
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539 **/
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540 int main(int argc, char* argv[])
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541 {
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542 using namespace OrthancStone;
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543
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544 StoneInitialize();
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545
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546 try
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547 {
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548 boost::shared_ptr<RtViewerApp> app = RtViewerApp::Create();
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549 g_app = app;
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550 app->RunSdl(argc,argv);
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551 }
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552 catch (Orthanc::OrthancException& e)
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553 {
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554 LOG(ERROR) << "EXCEPTION: " << e.What();
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555 }
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556
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557 StoneFinalize();
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558
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559 return 0;
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560 }
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561