Mercurial > hg > orthanc-stone

annotate Samples/Sdl/SingleFrameViewer/SimpleViewer.cpp @ 1392:ffdb82850e98

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Sdl run loop in /Common (might revert if need to customize) Segregation ongoing between sdl wasm Both samples ok SDL msvc v141 x64
author Benjamin Golinvaux <bgo@osimis.io>
date Tue, 28 Apr 2020 13:52:21 +0200
parents ab871499ed30
children
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ffdb82850e98 Sdl run loop in /Common (might revert if need to customize)
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1 #error TO BE DELETED
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3 #include "SdlSimpleViewerApplication.h"
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5 #include <Core/OrthancException.h>
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6
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7 #include <Framework/Loaders/GenericLoadersContext.h>
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8 #include <Framework/StoneException.h>
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9 #include <Framework/StoneEnumerations.h>
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10 #include <Framework/StoneInitialization.h>
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11 #include <Framework/Viewport/SdlViewport.h>
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13 #include <SDL.h>
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14
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15 namespace OrthancStone
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16 {
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17 static KeyboardModifiers GetKeyboardModifiers(const uint8_t* keyboardState,
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18 const int scancodeCount)
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19 {
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20 int result = KeyboardModifiers_None;
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22 if (keyboardState != NULL)
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23 {
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24 if (SDL_SCANCODE_LSHIFT < scancodeCount &&
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25 keyboardState[SDL_SCANCODE_LSHIFT])
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26 {
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27 result |= KeyboardModifiers_Shift;
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28 }
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30 if (SDL_SCANCODE_RSHIFT < scancodeCount &&
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31 keyboardState[SDL_SCANCODE_RSHIFT])
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32 {
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33 result |= KeyboardModifiers_Shift;
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34 }
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36 if (SDL_SCANCODE_LCTRL < scancodeCount &&
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37 keyboardState[SDL_SCANCODE_LCTRL])
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38 {
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39 result |= KeyboardModifiers_Control;
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40 }
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42 if (SDL_SCANCODE_RCTRL < scancodeCount &&
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43 keyboardState[SDL_SCANCODE_RCTRL])
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44 {
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45 result |= KeyboardModifiers_Control;
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46 }
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48 if (SDL_SCANCODE_LALT < scancodeCount &&
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49 keyboardState[SDL_SCANCODE_LALT])
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50 {
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51 result |= KeyboardModifiers_Alt;
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52 }
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54 if (SDL_SCANCODE_RALT < scancodeCount &&
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55 keyboardState[SDL_SCANCODE_RALT])
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56 {
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57 result |= KeyboardModifiers_Alt;
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58 }
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59 }
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60
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61 return static_cast<KeyboardModifiers>(result);
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62 }
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63
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64
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65 static void GetPointerEvent(PointerEvent& p,
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66 const ICompositor& compositor,
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67 SDL_Event event,
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68 const uint8_t* keyboardState,
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69 const int scancodeCount)
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70 {
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71 KeyboardModifiers modifiers = GetKeyboardModifiers(keyboardState, scancodeCount);
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72
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73 switch (event.button.button)
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74 {
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75 case SDL_BUTTON_LEFT:
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76 p.SetMouseButton(OrthancStone::MouseButton_Left);
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77 break;
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78
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79 case SDL_BUTTON_RIGHT:
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80 p.SetMouseButton(OrthancStone::MouseButton_Right);
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81 break;
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82
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83 case SDL_BUTTON_MIDDLE:
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84 p.SetMouseButton(OrthancStone::MouseButton_Middle);
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85 break;
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86
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87 default:
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88 p.SetMouseButton(OrthancStone::MouseButton_None);
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89 break;
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90 }
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91
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92 p.AddPosition(compositor.GetPixelCenterCoordinates(event.button.x, event.button.y));
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93 p.SetAltModifier(modifiers & KeyboardModifiers_Alt);
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94 p.SetControlModifier(modifiers & KeyboardModifiers_Control);
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95 p.SetShiftModifier(modifiers & KeyboardModifiers_Shift);
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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 /**
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101 * IMPORTANT: The full arguments to "main()" are needed for SDL on
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102 * Windows. Otherwise, one gets the linking error "undefined reference
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103 * to `SDL_main'". https://wiki.libsdl.org/FAQWindows
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104 **/
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105 int main(int argc, char* argv[])
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106 {
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107 try
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108 {
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109 OrthancStone::StoneInitialize();
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110 Orthanc::Logging::EnableInfoLevel(true);
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111 //Orthanc::Logging::EnableTraceLevel(true);
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112
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113 {
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114
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115 #if 1
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116 boost::shared_ptr<OrthancStone::SdlViewport> viewport =
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117 OrthancStone::SdlOpenGLViewport::Create("Stone of Orthanc", 800, 600);
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118 #else
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119 boost::shared_ptr<OrthancStone::SdlViewport> viewport =
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120 OrthancStone::SdlCairoViewport::Create("Stone of Orthanc", 800, 600);
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121 #endif
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122
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123 OrthancStone::GenericLoadersContext context(1, 4, 1);
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124
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125 context.StartOracle();
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126
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127 {
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128
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129 boost::shared_ptr<SdlSimpleViewerApplication> application(
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130 SdlSimpleViewerApplication::Create(context, viewport));
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131
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132 OrthancStone::DicomSource source;
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133
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134 // Default and command-line parameters
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135 const char* instanceId = "285dece8-e1956b38-cdc7d084-6ce3371e-536a9ffc";
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136 unsigned int frameIndex = 0;
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137
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138 if (argc == 1)
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139 {
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140 LOG(ERROR) << "No instanceId supplied. The default of " << instanceId << " will be used. "
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141 << "Please supply the Orthanc instance ID of the frame you wish to display then, optionally, "
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142 << "the zero-based index of the frame (for multi-frame instances)";
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143 // TODO: frame number as second argument...
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144 }
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145
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146 if (argc >= 2)
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147 instanceId = argv[1];
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148
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149 if (argc >= 3)
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150 frameIndex = atoi(argv[1]);
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151
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152 if (argc > 3)
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153 {
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154 LOG(ERROR) << "Extra arguments ignored!";
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155 }
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156
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157
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158 application->LoadOrthancFrame(source, instanceId, frameIndex);
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159
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160 OrthancStone::DefaultViewportInteractor interactor;
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161
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162 {
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163 int scancodeCount = 0;
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164 const uint8_t* keyboardState = SDL_GetKeyboardState(&scancodeCount);
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165
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166 bool stop = false;
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167 while (!stop)
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168 {
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169 bool paint = false;
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170 SDL_Event event;
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171 while (SDL_PollEvent(&event))
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172 {
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173 if (event.type == SDL_QUIT)
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174 {
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175 stop = true;
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176 break;
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177 }
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178 else if (viewport->IsRefreshEvent(event))
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179 {
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180 paint = true;
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181 }
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182 else if (event.type == SDL_WINDOWEVENT &&
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183 (event.window.event == SDL_WINDOWEVENT_RESIZED ||
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184 event.window.event == SDL_WINDOWEVENT_SIZE_CHANGED))
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185 {
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186 viewport->UpdateSize(event.window.data1, event.window.data2);
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187 }
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188 else if (event.type == SDL_WINDOWEVENT &&
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189 (event.window.event == SDL_WINDOWEVENT_SHOWN ||
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190 event.window.event == SDL_WINDOWEVENT_EXPOSED))
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191 {
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192 paint = true;
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193 }
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194 else if (event.type == SDL_KEYDOWN &&
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195 event.key.repeat == 0 /* Ignore key bounce */)
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196 {
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197 switch (event.key.keysym.sym)
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198 {
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199 case SDLK_f:
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200 viewport->ToggleMaximize();
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201 break;
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202
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203 case SDLK_s:
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204 application->FitContent();
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205 break;
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206
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207 case SDLK_q:
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208 stop = true;
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209 break;
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210
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211 default:
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212 break;
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213 }
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214 }
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215 else if (event.type == SDL_MOUSEBUTTONDOWN ||
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216 event.type == SDL_MOUSEMOTION ||
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217 event.type == SDL_MOUSEBUTTONUP)
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218 {
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219 std::auto_ptr<OrthancStone::IViewport::ILock> lock(viewport->Lock());
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220 if (lock->HasCompositor())
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221 {
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222 OrthancStone::PointerEvent p;
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223 OrthancStone::GetPointerEvent(p, lock->GetCompositor(),
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224 event, keyboardState, scancodeCount);
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225
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226 switch (event.type)
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227 {
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228 case SDL_MOUSEBUTTONDOWN:
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229 lock->GetController().HandleMousePress(interactor, p,
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230 lock->GetCompositor().GetCanvasWidth(),
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231 lock->GetCompositor().GetCanvasHeight());
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232 lock->Invalidate();
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233 break;
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234
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235 case SDL_MOUSEMOTION:
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236 if (lock->GetController().HandleMouseMove(p))
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237 {
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238 lock->Invalidate();
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239 }
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240 break;
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241
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242 case SDL_MOUSEBUTTONUP:
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243 lock->GetController().HandleMouseRelease(p);
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244 lock->Invalidate();
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245 break;
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246
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247 default:
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248 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError);
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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
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254 if (paint)
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255 {
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256 viewport->Paint();
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257 }
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258
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259 // Small delay to avoid using 100% of CPU
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260 SDL_Delay(1);
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261 }
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262 }
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263
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264 context.StopOracle();
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265 }
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266 }
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267
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268 OrthancStone::StoneFinalize();
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269 return 0;
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270 }
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271 catch (Orthanc::OrthancException & e)
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272 {
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273 auto test = e.What();
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274 fprintf(stdout, test);
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275 LOG(ERROR) << "OrthancException: " << e.What();
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276 return -1;
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277 }
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278 catch (OrthancStone::StoneException & e)
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279 {
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280 LOG(ERROR) << "StoneException: " << e.What();
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281 return -1;
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282 }
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283 catch (std::runtime_error & e)
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284 {
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285 LOG(ERROR) << "Runtime error: " << e.what();
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286 return -1;
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287 }
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288 catch (...)
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289 {
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290 LOG(ERROR) << "Native exception";
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291 return -1;
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292 }
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293 }