annotate Platforms/Wasm/Defaults.cpp @ 385:6cc3ce74dc05

using message broker in widgets
author Sebastien Jodogne <s.jodogne@gmail.com>
date Wed, 07 Nov 2018 20:49:41 +0100
parents 8716176ff7f0
children e33659decec5
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1 #include "Defaults.h"
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2
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3 #include "WasmWebService.h"
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4 #include <Framework/dev.h>
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5 #include "Framework/Widgets/TestCairoWidget.h"
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6 #include <Framework/Viewport/WidgetViewport.h>
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7 #include <Framework/Widgets/LayerWidget.h>
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8 #include <algorithm>
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9 #include "Applications/Wasm/StartupParametersBuilder.h"
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10 #include "Platforms/Wasm/WasmPlatformApplicationAdapter.h"
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11
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12 static unsigned int width_ = 0;
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13 static unsigned int height_ = 0;
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14
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15 /**********************************/
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16
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17 static std::unique_ptr<OrthancStone::IStoneApplication> application;
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18 static std::unique_ptr<OrthancStone::WasmPlatformApplicationAdapter> applicationWasmAdapter = NULL;
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19 static std::unique_ptr<OrthancStone::StoneApplicationContext> context;
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20 static OrthancStone::StartupParametersBuilder startupParametersBuilder;
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21 static OrthancStone::MessageBroker broker;
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22
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23 static OrthancStone::ViewportContentChangedObserver viewportContentChangedObserver_(broker);
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24 static OrthancStone::StatusBar statusBar_;
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25
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26 static std::list<std::shared_ptr<OrthancStone::WidgetViewport>> viewports_;
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27
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28 std::shared_ptr<OrthancStone::WidgetViewport> FindViewportSharedPtr(ViewportHandle viewport) {
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29 for (const auto& v : viewports_) {
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30 if (v.get() == viewport) {
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31 return v;
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32 }
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33 }
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34 assert(false);
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35 return std::shared_ptr<OrthancStone::WidgetViewport>();
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36 }
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37
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38 #ifdef __cplusplus
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39 extern "C" {
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40 #endif
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41
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42 using namespace OrthancStone;
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43
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44 // when WASM needs a C++ viewport
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45 ViewportHandle EMSCRIPTEN_KEEPALIVE CreateCppViewport() {
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46
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47 std::shared_ptr<OrthancStone::WidgetViewport> viewport(new OrthancStone::WidgetViewport(broker));
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48 printf("viewport %x\n", (int)viewport.get());
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49
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50 viewports_.push_back(viewport);
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51
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52 printf("There are now %d viewports in C++\n", viewports_.size());
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53
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54 viewport->SetStatusBar(statusBar_);
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55
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56 viewport->RegisterObserverCallback(
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57 new Callable<ViewportContentChangedObserver, IViewport::ViewportChangedMessage>
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58 (viewportContentChangedObserver_, &ViewportContentChangedObserver::OnViewportChanged));
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59
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60 return viewport.get();
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61 }
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62
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63 // when WASM does not need a viewport anymore, it should release it
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64 void EMSCRIPTEN_KEEPALIVE ReleaseCppViewport(ViewportHandle viewport) {
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65 viewports_.remove_if([viewport](const std::shared_ptr<OrthancStone::WidgetViewport>& v) { return v.get() == viewport;});
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66
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67 printf("There are now %d viewports in C++\n", viewports_.size());
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68 }
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69
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70 void EMSCRIPTEN_KEEPALIVE CreateWasmApplication(ViewportHandle viewport) {
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71
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72 printf("CreateWasmApplication\n");
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73
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74 application.reset(CreateUserApplication(broker));
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75 applicationWasmAdapter.reset(CreateWasmApplicationAdapter(broker, application.get()));
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76 WasmWebService::SetBroker(broker);
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77
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78 startupParametersBuilder.Clear();
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79 }
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80
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81 void EMSCRIPTEN_KEEPALIVE SetStartupParameter(const char* keyc,
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82 const char* value) {
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83 startupParametersBuilder.SetStartupParameter(keyc, value);
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84 }
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85
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86 void EMSCRIPTEN_KEEPALIVE StartWasmApplication() {
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87
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88 printf("StartWasmApplication\n");
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89
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90 // recreate a command line from uri arguments and parse it
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91 boost::program_options::variables_map parameters;
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92 boost::program_options::options_description options;
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93 application->DeclareStartupOptions(options);
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94 startupParametersBuilder.GetStartupParameters(parameters, options);
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95
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96 context.reset(new OrthancStone::StoneApplicationContext());
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97 context->SetWebService(OrthancStone::WasmWebService::GetInstance());
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98 application->Initialize(context.get(), statusBar_, parameters);
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99 application->InitializeWasm();
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100
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101 // viewport->SetSize(width_, height_);
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102 printf("StartWasmApplication - completed\n");
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103 }
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104
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105 void EMSCRIPTEN_KEEPALIVE NotifyUpdateContent()
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106 {
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107 for (auto viewport : viewports_) {
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108 // TODO Only launch the JavaScript timer if "HasUpdateContent()"
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109 if (viewport->HasUpdateContent())
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110 {
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111 viewport->UpdateContent();
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112 }
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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
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119 void EMSCRIPTEN_KEEPALIVE ViewportSetSize(ViewportHandle viewport, unsigned int width, unsigned int height)
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120 {
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121 width_ = width;
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122 height_ = height;
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123
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124 viewport->SetSize(width, height);
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125 }
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126
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127 int EMSCRIPTEN_KEEPALIVE ViewportRender(ViewportHandle viewport,
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128 unsigned int width,
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129 unsigned int height,
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130 uint8_t* data)
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131 {
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132 viewportContentChangedObserver_.Reset();
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133
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134 //printf("ViewportRender called %dx%d\n", width, height);
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135 if (width == 0 ||
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136 height == 0)
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137 {
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138 return 1;
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139 }
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140
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141 Orthanc::ImageAccessor surface;
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142 surface.AssignWritable(Orthanc::PixelFormat_BGRA32, width, height, 4 * width, data);
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143
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144 viewport->Render(surface);
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145
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146 // Convert from BGRA32 memory layout (only color mode supported by
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147 // Cairo, which corresponds to CAIRO_FORMAT_ARGB32) to RGBA32 (as
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148 // expected by HTML5 canvas). This simply amounts to swapping the
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149 // B and R channels.
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150 uint8_t* p = data;
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151 for (unsigned int y = 0; y < height; y++) {
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152 for (unsigned int x = 0; x < width; x++) {
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153 uint8_t tmp = p[0];
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154 p[0] = p[2];
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155 p[2] = tmp;
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156
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157 p += 4;
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158 }
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159 }
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160
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161 return 1;
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162 }
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163
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164
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165 void EMSCRIPTEN_KEEPALIVE ViewportMouseDown(ViewportHandle viewport,
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166 unsigned int rawButton,
223
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167 int x,
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168 int y,
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169 unsigned int rawModifiers)
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170 {
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171 OrthancStone::MouseButton button;
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172 switch (rawButton)
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173 {
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174 case 0:
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175 button = OrthancStone::MouseButton_Left;
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176 break;
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177
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178 case 1:
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179 button = OrthancStone::MouseButton_Middle;
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180 break;
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181
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182 case 2:
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183 button = OrthancStone::MouseButton_Right;
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184 break;
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185
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186 default:
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187 return; // Unknown button
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188 }
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189
228
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190 viewport->MouseDown(button, x, y, OrthancStone::KeyboardModifiers_None /* TODO */);
223
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191 }
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192
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193
228
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194 void EMSCRIPTEN_KEEPALIVE ViewportMouseWheel(ViewportHandle viewport,
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195 int deltaY,
223
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196 int x,
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197 int y,
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198 int isControl)
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199 {
228
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200 if (deltaY != 0)
223
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201 {
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202 OrthancStone::MouseWheelDirection direction = (deltaY < 0 ?
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203 OrthancStone::MouseWheelDirection_Up :
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204 OrthancStone::MouseWheelDirection_Down);
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205 OrthancStone::KeyboardModifiers modifiers = OrthancStone::KeyboardModifiers_None;
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206
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207 if (isControl != 0)
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208 {
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209 modifiers = OrthancStone::KeyboardModifiers_Control;
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210 }
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211
228
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212 viewport->MouseWheel(direction, x, y, modifiers);
223
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213 }
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214 }
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215
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216
228
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217 void EMSCRIPTEN_KEEPALIVE ViewportMouseMove(ViewportHandle viewport,
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218 int x,
223
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219 int y)
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220 {
228
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221 viewport->MouseMove(x, y);
223
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222 }
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223
228
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224 void EMSCRIPTEN_KEEPALIVE ViewportKeyPressed(ViewportHandle viewport,
327
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225 int key,
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226 const char* keyChar,
223
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227 bool isShiftPressed,
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228 bool isControlPressed,
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229 bool isAltPressed)
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230
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231 {
228
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232 OrthancStone::KeyboardModifiers modifiers = OrthancStone::KeyboardModifiers_None;
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233 if (isShiftPressed) {
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234 modifiers = static_cast<OrthancStone::KeyboardModifiers>(modifiers + OrthancStone::KeyboardModifiers_Shift);
223
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235 }
228
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236 if (isControlPressed) {
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237 modifiers = static_cast<OrthancStone::KeyboardModifiers>(modifiers + OrthancStone::KeyboardModifiers_Control);
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238 }
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239 if (isAltPressed) {
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240 modifiers = static_cast<OrthancStone::KeyboardModifiers>(modifiers + OrthancStone::KeyboardModifiers_Alt);
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241 }
327
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242
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243 char c = 0;
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244 if (keyChar != NULL && key == OrthancStone::KeyboardKeys_Generic) {
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245 c = keyChar[0];
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246 }
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247 viewport->KeyPressed(static_cast<OrthancStone::KeyboardKeys>(key), c, modifiers);
223
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248 }
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249
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250
228
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251 void EMSCRIPTEN_KEEPALIVE ViewportMouseUp(ViewportHandle viewport)
223
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252 {
228
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253 viewport->MouseUp();
223
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254 }
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255
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256
228
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257 void EMSCRIPTEN_KEEPALIVE ViewportMouseEnter(ViewportHandle viewport)
223
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258 {
228
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259 viewport->MouseEnter();
223
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260 }
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261
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262
228
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263 void EMSCRIPTEN_KEEPALIVE ViewportMouseLeave(ViewportHandle viewport)
223
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264 {
228
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265 viewport->MouseLeave();
223
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266 }
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267
287
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268 const char* EMSCRIPTEN_KEEPALIVE SendMessageToStoneApplication(const char* message)
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269 {
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270 static std::string output; // we don't want the string to be deallocated when we return to JS code so we always use the same string (this is fine since JS is single-thread)
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271
307
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272 printf("SendMessageToStoneApplication\n");
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273 printf("%s", message);
307
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274
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275 if (applicationWasmAdapter.get() != NULL) {
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276 printf("sending message to C++\n");
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277 applicationWasmAdapter->HandleMessageFromWeb(output, std::string(message));
287
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278 return output.c_str();
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279 }
307
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280 printf("This stone application does not have a Web Adapter");
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281 return NULL;
287
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282 }
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283
223
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284
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285 #ifdef __cplusplus
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286 }
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287 #endif