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annotate Applications/Samples/Sdl/SingleFrameViewer/SdlSimpleViewer.cpp @ 1789:462d7a0e064e

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added line measures to sdl single frame viewer sample
author Sebastien Jodogne <s.jodogne@gmail.com>
date Mon, 17 May 2021 11:55:21 +0200
parents 9ac2a65d4172
children b325761e0bd3
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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) 2017-2021 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 "SdlSimpleViewerApplication.h"
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23 #include "../SdlHelpers.h"
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24 #include "../../Common/SampleHelpers.h"
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25
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26 #include "../../../../OrthancStone/Sources/Loaders/GenericLoadersContext.h"
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27 #include "../../../../OrthancStone/Sources/Scene2DViewport/LineMeasureTool.h"
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28 #include "../../../../OrthancStone/Sources/Scene2DViewport/UndoStack.h"
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29 #include "../../../../OrthancStone/Sources/StoneEnumerations.h"
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30 #include "../../../../OrthancStone/Sources/StoneException.h"
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31 #include "../../../../OrthancStone/Sources/StoneInitialization.h"
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32 #include "../../../../OrthancStone/Sources/Viewport/DefaultViewportInteractor.h"
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33 #include "../../../Platforms/Sdl/SdlViewport.h"
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34
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35 #include <EmbeddedResources.h>
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36 #include <Compatibility.h> // For std::unique_ptr<>
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37 #include <OrthancException.h>
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38
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39 #include <boost/program_options.hpp>
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40 #include <SDL.h>
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41
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42 #include <string>
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43
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44
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45 std::string orthancUrl;
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46 std::string instanceId;
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47 int frameIndex = 0;
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48
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49
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50 static void ProcessOptions(int argc, char* argv[])
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51 {
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52 namespace po = boost::program_options;
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53 po::options_description desc("Usage");
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54
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55 desc.add_options()
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56 ("loglevel", po::value<std::string>()->default_value("WARNING"),
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57 "You can choose WARNING, INFO or TRACE for the logging level: Errors and warnings will always be displayed. (default: WARNING)")
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58
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59 ("orthanc", po::value<std::string>()->default_value("http://localhost:8042"),
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60 "Base URL of the Orthanc instance")
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61
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62 ("instance", po::value<std::string>()->default_value("285dece8-e1956b38-cdc7d084-6ce3371e-536a9ffc"),
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63 "Orthanc ID of the instance to display")
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64
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65 ("frame_index", po::value<int>()->default_value(0),
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66 "The zero-based index of the frame (for multi-frame instances)")
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67 ;
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68
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69 std::cout << desc << std::endl;
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70
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71 std::cout << std::endl << "Keyboard shorcuts:" << std::endl
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72 << " f\tToggle fullscreen display" << std::endl
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73 << " l\tEnable/disable the line measure tool" << std::endl
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74 << " q\tExit" << std::endl
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75 << " s\tFit the viewpoint to the image" << std::endl
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76 << std::endl << "Mouse buttons:" << std::endl
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77 << " left \tChange windowing, or edit measure" << std::endl
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78 << " center\tMove the viewpoint, or move measure" << std::endl
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79 << " right \tZoom, or move measure" << std::endl
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80 << std::endl;
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81
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82 po::variables_map vm;
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83 try
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84 {
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85 po::store(po::parse_command_line(argc, argv, desc), vm);
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86 po::notify(vm);
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87 }
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88 catch (std::exception& e)
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89 {
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90 std::cerr << "Please check your command line options! (\"" << e.what() << "\")" << std::endl;
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91 }
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92
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93 if (vm.count("loglevel") > 0)
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94 {
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95 std::string logLevel = vm["loglevel"].as<std::string>();
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96 OrthancStoneHelpers::SetLogLevel(logLevel);
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97 }
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98
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99 if (vm.count("orthanc") > 0)
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100 {
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101 // maybe check URL validity here
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102 orthancUrl = vm["orthanc"].as<std::string>();
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103 }
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104
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105 if (vm.count("instance") > 0)
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106 {
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107 instanceId = vm["instance"].as<std::string>();
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108 }
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109
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110 if (vm.count("frame_index") > 0)
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111 {
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112 frameIndex = vm["frame_index"].as<int>();
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113 }
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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 * IMPORTANT: The full arguments to "main()" are needed for SDL on
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119 * Windows. Otherwise, one gets the linking error "undefined reference
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120 * to `SDL_main'". https://wiki.libsdl.org/FAQWindows
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121 **/
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122 int main(int argc, char* argv[])
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123 {
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124 try
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125 {
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126 OrthancStone::StoneInitialize();
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127 OrthancStone::SdlWindow::GlobalInitialize();
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128
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129 ProcessOptions(argc, argv);
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130
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131 //Orthanc::Logging::EnableInfoLevel(true);
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132 //Orthanc::Logging::EnableTraceLevel(true);
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133
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134 {
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135
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136 #if 1
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137 boost::shared_ptr<OrthancStone::SdlViewport> viewport =
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138 OrthancStone::SdlOpenGLViewport::Create("Stone of Orthanc", 800, 600);
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139 #else
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140 boost::shared_ptr<OrthancStone::SdlViewport> viewport =
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141 OrthancStone::SdlCairoViewport::Create("Stone of Orthanc", 800, 600);
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142 #endif
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143
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144 boost::shared_ptr<OrthancStone::UndoStack> undoStack(new OrthancStone::UndoStack);
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145
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146 OrthancStone::GenericLoadersContext context(1, 4, 1);
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147
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148 Orthanc::WebServiceParameters orthancWebService;
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149 orthancWebService.SetUrl(orthancUrl);
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150 context.SetOrthancParameters(orthancWebService);
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151
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152 context.StartOracle();
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153
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154 {
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155 {
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156 std::string font;
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157 Orthanc::EmbeddedResources::GetFileResource(font, Orthanc::EmbeddedResources::UBUNTU_FONT);
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158
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159 std::unique_ptr<OrthancStone::IViewport::ILock> lock(viewport->Lock());
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160 lock->GetCompositor().SetFont(0, font, 16, Orthanc::Encoding_Latin1);
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161 lock->GetController().SetUndoStack(undoStack);
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162 }
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163
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164 boost::shared_ptr<OrthancStone::LineMeasureTool> lineMeasureTool(OrthancStone::LineMeasureTool::Create(viewport));
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165 bool lineMeasureFirst = true;
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166 bool lineMeasureEnabled = false;
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167 lineMeasureTool->Disable();
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168
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169 boost::shared_ptr<SdlSimpleViewerApplication> application(
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170 SdlSimpleViewerApplication::Create(context, viewport));
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171
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172 OrthancStone::DicomSource source;
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173
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174 application->LoadOrthancFrame(source, instanceId, frameIndex);
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175
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176 OrthancStone::DefaultViewportInteractor interactor;
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177 interactor.SetWindowingLayer(0);
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178
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179 {
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180 int scancodeCount = 0;
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181 const uint8_t* keyboardState = SDL_GetKeyboardState(&scancodeCount);
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182
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183 bool stop = false;
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184 while (!stop)
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185 {
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186 bool paint = false;
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187 SDL_Event event;
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188 while (SDL_PollEvent(&event))
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189 {
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190 if (event.type == SDL_QUIT)
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191 {
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192 stop = true;
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193 break;
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194 }
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195 else if (viewport->IsRefreshEvent(event))
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196 {
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197 paint = true;
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198 }
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199 else if (event.type == SDL_WINDOWEVENT &&
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200 (event.window.event == SDL_WINDOWEVENT_RESIZED ||
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201 event.window.event == SDL_WINDOWEVENT_SIZE_CHANGED))
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202 {
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203 viewport->UpdateSize(event.window.data1, event.window.data2);
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204 }
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205 else if (event.type == SDL_WINDOWEVENT &&
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206 (event.window.event == SDL_WINDOWEVENT_SHOWN ||
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207 event.window.event == SDL_WINDOWEVENT_EXPOSED))
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208 {
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209 std::unique_ptr<OrthancStone::IViewport::ILock> lock(viewport->Lock());
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210 lock->RefreshCanvasSize();
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211 }
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212 else if (event.type == SDL_KEYDOWN &&
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213 event.key.repeat == 0 /* Ignore key bounce */)
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214 {
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215 switch (event.key.keysym.sym)
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216 {
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217 case SDLK_f:
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218 viewport->ToggleMaximize();
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219 break;
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220
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221 case SDLK_s:
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222 application->FitContent();
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223 break;
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224
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225 case SDLK_q:
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226 stop = true;
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227 break;
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228
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229 case SDLK_l:
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230 if (lineMeasureEnabled)
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231 {
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232 lineMeasureTool->Disable();
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233 lineMeasureEnabled = false;
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234 }
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235 else
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236 {
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237 if (lineMeasureFirst)
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238 {
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239 std::unique_ptr<OrthancStone::IViewport::ILock> lock(viewport->Lock());
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240 OrthancStone::Extent2D extent;
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241 lock->GetController().GetScene().GetBoundingBox(extent);
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242 if (!extent.IsEmpty())
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243 {
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244 OrthancStone::ScenePoint2D p(extent.GetCenterX(), extent.GetCenterY());
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245 lineMeasureTool->Set(p, p);
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246 }
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247 lineMeasureFirst = false;
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248 }
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249
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250 lineMeasureTool->Enable();
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251 lineMeasureEnabled = true;
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252 }
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253 break;
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254
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255 default:
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256 break;
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257 }
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258 }
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259 else if (event.type == SDL_MOUSEBUTTONDOWN ||
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260 event.type == SDL_MOUSEMOTION ||
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261 event.type == SDL_MOUSEBUTTONUP)
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262 {
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263 std::unique_ptr<OrthancStone::IViewport::ILock> lock(viewport->Lock());
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264 if (lock->HasCompositor())
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265 {
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266 OrthancStone::PointerEvent p;
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267 OrthancStoneHelpers::GetPointerEvent(p, lock->GetCompositor(),
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268 event, keyboardState, scancodeCount);
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269
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270 switch (event.type)
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271 {
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272 case SDL_MOUSEBUTTONDOWN:
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273 {
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274 boost::shared_ptr<OrthancStone::IFlexiblePointerTracker> t;
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275 if (lineMeasureEnabled)
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276 {
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277 t = lineMeasureTool->CreateEditionTracker(p);
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278 }
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279
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280 if (t.get() != NULL)
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281 {
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282 lock->GetController().AcquireActiveTracker(t);
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283 }
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284 else
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285 {
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286 lock->GetController().HandleMousePress(interactor, p,
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287 lock->GetCompositor().GetCanvasWidth(),
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288 lock->GetCompositor().GetCanvasHeight());
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289 }
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290 lock->Invalidate();
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291 break;
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292 }
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293
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294 case SDL_MOUSEMOTION:
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295 if (lock->GetController().HandleMouseMove(p))
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296 {
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297 lock->Invalidate();
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298 }
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299 break;
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300
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301 case SDL_MOUSEBUTTONUP:
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302 lock->GetController().HandleMouseRelease(p);
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303 lock->Invalidate();
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304 break;
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305
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306 default:
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307 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError);
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308 }
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309 }
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310 }
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311 }
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312
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313 if (paint)
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314 {
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315 viewport->Paint();
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316 }
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317
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318 // Small delay to avoid using 100% of CPU
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319 SDL_Delay(1);
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320 }
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321 }
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322 context.StopOracle();
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323 }
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324 }
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325
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326 OrthancStone::SdlWindow::GlobalFinalize();
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327 OrthancStone::StoneFinalize();
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328 return 0;
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329 }
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330 catch (Orthanc::OrthancException& e)
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331 {
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332 LOG(ERROR) << "OrthancException: " << e.What();
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333 return -1;
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334 }
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335 catch (OrthancStone::StoneException& e)
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336 {
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337 LOG(ERROR) << "StoneException: " << e.What();
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338 return -1;
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339 }
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340 catch (std::runtime_error& e)
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341 {
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342 LOG(ERROR) << "Runtime error: " << e.what();
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343 return -1;
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344 }
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345 catch (...)
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346 {
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347 LOG(ERROR) << "Native exception";
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348 return -1;
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349 }
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350 }