Mercurial > hg > orthanc-stone

annotate Samples/Sdl/SingleFrameViewer/SimpleViewer.cpp @ 1383:ab871499ed30

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SingleFrameViewer: refactored file locations + names to share files for RtViewer
author Benjamin Golinvaux <bgo@osimis.io>
date Mon, 27 Apr 2020 10:01:03 +0200
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children ffdb82850e98
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2 #include "SdlSimpleViewerApplication.h"
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4 #include <Core/OrthancException.h>
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6 #include <Framework/Loaders/GenericLoadersContext.h>
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7 #include <Framework/StoneException.h>
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8 #include <Framework/StoneEnumerations.h>
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9 #include <Framework/StoneInitialization.h>
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10 #include <Framework/Viewport/SdlViewport.h>
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12 #include <SDL.h>
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14 namespace OrthancStone
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15 {
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16 static KeyboardModifiers GetKeyboardModifiers(const uint8_t* keyboardState,
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17 const int scancodeCount)
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18 {
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19 int result = KeyboardModifiers_None;
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21 if (keyboardState != NULL)
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22 {
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23 if (SDL_SCANCODE_LSHIFT < scancodeCount &&
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24 keyboardState[SDL_SCANCODE_LSHIFT])
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25 {
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26 result |= KeyboardModifiers_Shift;
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27 }
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29 if (SDL_SCANCODE_RSHIFT < scancodeCount &&
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30 keyboardState[SDL_SCANCODE_RSHIFT])
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31 {
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32 result |= KeyboardModifiers_Shift;
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33 }
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35 if (SDL_SCANCODE_LCTRL < scancodeCount &&
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36 keyboardState[SDL_SCANCODE_LCTRL])
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37 {
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38 result |= KeyboardModifiers_Control;
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39 }
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41 if (SDL_SCANCODE_RCTRL < scancodeCount &&
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42 keyboardState[SDL_SCANCODE_RCTRL])
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43 {
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44 result |= KeyboardModifiers_Control;
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45 }
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47 if (SDL_SCANCODE_LALT < scancodeCount &&
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48 keyboardState[SDL_SCANCODE_LALT])
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49 {
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50 result |= KeyboardModifiers_Alt;
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51 }
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53 if (SDL_SCANCODE_RALT < scancodeCount &&
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54 keyboardState[SDL_SCANCODE_RALT])
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55 {
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56 result |= KeyboardModifiers_Alt;
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57 }
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58 }
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60 return static_cast<KeyboardModifiers>(result);
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61 }
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64 static void GetPointerEvent(PointerEvent& p,
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65 const ICompositor& compositor,
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66 SDL_Event event,
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67 const uint8_t* keyboardState,
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68 const int scancodeCount)
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69 {
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70 KeyboardModifiers modifiers = GetKeyboardModifiers(keyboardState, scancodeCount);
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71
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72 switch (event.button.button)
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73 {
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74 case SDL_BUTTON_LEFT:
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75 p.SetMouseButton(OrthancStone::MouseButton_Left);
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76 break;
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77
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78 case SDL_BUTTON_RIGHT:
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79 p.SetMouseButton(OrthancStone::MouseButton_Right);
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80 break;
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81
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82 case SDL_BUTTON_MIDDLE:
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83 p.SetMouseButton(OrthancStone::MouseButton_Middle);
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84 break;
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85
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86 default:
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87 p.SetMouseButton(OrthancStone::MouseButton_None);
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88 break;
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89 }
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90
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91 p.AddPosition(compositor.GetPixelCenterCoordinates(event.button.x, event.button.y));
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92 p.SetAltModifier(modifiers & KeyboardModifiers_Alt);
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93 p.SetControlModifier(modifiers & KeyboardModifiers_Control);
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94 p.SetShiftModifier(modifiers & KeyboardModifiers_Shift);
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95 }
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96
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97 }
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98
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99 /**
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100 * IMPORTANT: The full arguments to "main()" are needed for SDL on
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101 * Windows. Otherwise, one gets the linking error "undefined reference
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102 * to `SDL_main'". https://wiki.libsdl.org/FAQWindows
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103 **/
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104 int main(int argc, char* argv[])
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105 {
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106 try
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107 {
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108 OrthancStone::StoneInitialize();
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109 Orthanc::Logging::EnableInfoLevel(true);
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110 //Orthanc::Logging::EnableTraceLevel(true);
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111
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112 {
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113
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114 #if 1
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115 boost::shared_ptr<OrthancStone::SdlViewport> viewport =
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116 OrthancStone::SdlOpenGLViewport::Create("Stone of Orthanc", 800, 600);
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117 #else
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118 boost::shared_ptr<OrthancStone::SdlViewport> viewport =
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119 OrthancStone::SdlCairoViewport::Create("Stone of Orthanc", 800, 600);
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120 #endif
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121
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122 OrthancStone::GenericLoadersContext context(1, 4, 1);
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123
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124 context.StartOracle();
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125
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126 {
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127
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128 boost::shared_ptr<SdlSimpleViewerApplication> application(
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129 SdlSimpleViewerApplication::Create(context, viewport));
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130
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131 OrthancStone::DicomSource source;
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132
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133 // Default and command-line parameters
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134 const char* instanceId = "285dece8-e1956b38-cdc7d084-6ce3371e-536a9ffc";
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135 unsigned int frameIndex = 0;
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136
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137 if (argc == 1)
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138 {
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139 LOG(ERROR) << "No instanceId supplied. The default of " << instanceId << " will be used. "
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140 << "Please supply the Orthanc instance ID of the frame you wish to display then, optionally, "
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141 << "the zero-based index of the frame (for multi-frame instances)";
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142 // TODO: frame number as second argument...
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143 }
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144
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145 if (argc >= 2)
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146 instanceId = argv[1];
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147
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148 if (argc >= 3)
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149 frameIndex = atoi(argv[1]);
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150
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151 if (argc > 3)
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152 {
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153 LOG(ERROR) << "Extra arguments ignored!";
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154 }
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155
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156
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157 application->LoadOrthancFrame(source, instanceId, frameIndex);
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158
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159 OrthancStone::DefaultViewportInteractor interactor;
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160
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161 {
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162 int scancodeCount = 0;
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163 const uint8_t* keyboardState = SDL_GetKeyboardState(&scancodeCount);
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164
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165 bool stop = false;
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166 while (!stop)
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167 {
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168 bool paint = false;
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169 SDL_Event event;
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170 while (SDL_PollEvent(&event))
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171 {
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172 if (event.type == SDL_QUIT)
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173 {
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174 stop = true;
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175 break;
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176 }
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177 else if (viewport->IsRefreshEvent(event))
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178 {
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179 paint = true;
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180 }
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181 else if (event.type == SDL_WINDOWEVENT &&
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182 (event.window.event == SDL_WINDOWEVENT_RESIZED ||
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183 event.window.event == SDL_WINDOWEVENT_SIZE_CHANGED))
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184 {
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185 viewport->UpdateSize(event.window.data1, event.window.data2);
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186 }
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187 else if (event.type == SDL_WINDOWEVENT &&
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188 (event.window.event == SDL_WINDOWEVENT_SHOWN ||
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189 event.window.event == SDL_WINDOWEVENT_EXPOSED))
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190 {
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191 paint = true;
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192 }
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193 else if (event.type == SDL_KEYDOWN &&
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194 event.key.repeat == 0 /* Ignore key bounce */)
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195 {
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196 switch (event.key.keysym.sym)
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197 {
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198 case SDLK_f:
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199 viewport->ToggleMaximize();
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200 break;
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201
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202 case SDLK_s:
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203 application->FitContent();
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204 break;
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205
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206 case SDLK_q:
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207 stop = true;
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208 break;
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209
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210 default:
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211 break;
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212 }
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213 }
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214 else if (event.type == SDL_MOUSEBUTTONDOWN ||
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215 event.type == SDL_MOUSEMOTION ||
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216 event.type == SDL_MOUSEBUTTONUP)
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217 {
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218 std::auto_ptr<OrthancStone::IViewport::ILock> lock(viewport->Lock());
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219 if (lock->HasCompositor())
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220 {
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221 OrthancStone::PointerEvent p;
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222 OrthancStone::GetPointerEvent(p, lock->GetCompositor(),
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223 event, keyboardState, scancodeCount);
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224
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225 switch (event.type)
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226 {
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227 case SDL_MOUSEBUTTONDOWN:
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228 lock->GetController().HandleMousePress(interactor, p,
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229 lock->GetCompositor().GetCanvasWidth(),
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230 lock->GetCompositor().GetCanvasHeight());
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231 lock->Invalidate();
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232 break;
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233
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234 case SDL_MOUSEMOTION:
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235 if (lock->GetController().HandleMouseMove(p))
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236 {
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237 lock->Invalidate();
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238 }
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239 break;
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240
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241 case SDL_MOUSEBUTTONUP:
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242 lock->GetController().HandleMouseRelease(p);
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243 lock->Invalidate();
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244 break;
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245
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246 default:
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247 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError);
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248 }
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249 }
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250 }
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251 }
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252
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253 if (paint)
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254 {
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255 viewport->Paint();
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256 }
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257
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258 // Small delay to avoid using 100% of CPU
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259 SDL_Delay(1);
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260 }
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261 }
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262
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263 context.StopOracle();
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264 }
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265 }
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266
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267 OrthancStone::StoneFinalize();
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268 return 0;
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269 }
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270 catch (Orthanc::OrthancException & e)
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271 {
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272 auto test = e.What();
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273 fprintf(stdout, test);
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274 LOG(ERROR) << "OrthancException: " << e.What();
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275 return -1;
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276 }
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277 catch (OrthancStone::StoneException & e)
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278 {
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279 LOG(ERROR) << "StoneException: " << e.What();
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280 return -1;
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281 }
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282 catch (std::runtime_error & e)
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283 {
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284 LOG(ERROR) << "Runtime error: " << e.what();
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285 return -1;
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286 }
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287 catch (...)
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288 {
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289 LOG(ERROR) << "Native exception";
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290 return -1;
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291 }
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292 }