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222
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1 #include "Defaults.h"
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2
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223
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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
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9 static unsigned int width_ = 0;
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10 static unsigned int height_ = 0;
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11
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12 /**********************************/
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13
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14 static std::auto_ptr<OrthancStone::BasicWasmApplication> application;
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15 static std::shared_ptr<OrthancStone::WidgetViewport> viewport_;
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16 static OrthancStone::ChangeObserver changeObserver_;
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17 static OrthancStone::StatusBar statusBar_;
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18
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19
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227
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20 static std::list<std::shared_ptr<OrthancStone::WidgetViewport>> viewports_;
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21
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223
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22 #ifdef __cplusplus
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23 extern "C" {
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24 #endif
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25
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26 using namespace OrthancStone;
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227
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27
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28 // when WASM needs a C++ viewport
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29 ViewportHandle EMSCRIPTEN_KEEPALIVE CreateCppViewport() {
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30
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31 std::shared_ptr<OrthancStone::WidgetViewport> viewport(new OrthancStone::WidgetViewport);
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32 printf("viewport %x\n", viewport.get());
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33
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34 viewports_.push_back(viewport);
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35
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36 printf("There are now %d viewports in C++\n", viewports_.size());
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37
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38 viewport->SetStatusBar(statusBar_);
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39 viewport->Register(changeObserver_);
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40
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41 // TODO: remove once we really want to handle multiple viewports
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42 viewport_ = viewport;
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43 return viewport.get();
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44 }
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45
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46 // when WASM does not need a viewport anymore, it should release it
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47 void EMSCRIPTEN_KEEPALIVE ReleaseCppViewport(ViewportHandle viewport) {
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48 viewports_.remove_if([viewport](const std::shared_ptr<OrthancStone::WidgetViewport>& v) { return v.get() == viewport;});
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49
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50 printf("There are now %d viewports in C++\n", viewports_.size());
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51 }
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52
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53
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54 void EMSCRIPTEN_KEEPALIVE CreateWasmApplication(ViewportHandle viewport) {
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223
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55
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56 printf("CreateWasmApplication\n");
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57
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58 application.reset(CreateUserApplication());
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59
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60 boost::program_options::options_description options;
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61 application->DeclareStartupOptions(options);
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62 }
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63
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64 void EMSCRIPTEN_KEEPALIVE SetStartupParameter(const char* keyc,
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65 const char* value) {
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66 application->SetStartupParameter(keyc, value);
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67 }
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68
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69 void EMSCRIPTEN_KEEPALIVE StartWasmApplication() {
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70
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71 printf("StartWasmApplication\n");
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72
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73 // recreate a command line from uri arguments and parse it
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74 boost::program_options::variables_map parameters;
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75 application->GetStartupParameters(parameters);
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76
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77 BasicWasmApplicationContext& context = dynamic_cast<BasicWasmApplicationContext&>(application->CreateApplicationContext(OrthancStone::WasmWebService::GetInstance(), viewport_));;
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78 application->Initialize(statusBar_, parameters);
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79
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80 viewport_->SetSize(width_, height_);
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81 printf("StartWasmApplication - completed\n");
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82 }
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83
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84 // void EMSCRIPTEN_KEEPALIVE ViewportUpdate(const char* _instanceId) {
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85 // printf("updating viewport content, Instance = [%s]\n", instanceId.c_str());
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86
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87 // layerSource->LoadFrame(instanceId, 0);
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88 // printf("frame loaded\n");
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89 // instanceWidget->UpdateContent();
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90
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91 // printf("update should be done\n");
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92 // }
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93
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94 // void EMSCRIPTEN_KEEPALIVE ViewportStart()
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95 // {
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96
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97 // viewport_.reset(new OrthancStone::WidgetViewport);
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98 // viewport_->SetStatusBar(statusBar_);
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99 // viewport_->Register(changeObserver_);
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100 // instanceWidget.reset(new OrthancStone::LayerWidget);
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101 // layerSource = new OrthancStone::OrthancFrameLayerSource(OrthancStone::WasmWebService::GetInstance());
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102
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103 // if (!instanceId.empty())
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104 // {
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105 // layerSource->LoadFrame(instanceId, 0);
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106 // } else {
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107 // printf("No instance provided so far\n");
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108 // }
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109
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110 // instanceWidget->AddLayer(layerSource);
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111
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112 // {
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113 // OrthancStone::RenderStyle s;
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114 // //s.drawGrid_ = true;
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115 // s.alpha_ = 1;
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116 // s.windowing_ = OrthancStone::ImageWindowing_Bone;
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117 // instanceWidget->SetLayerStyle(0, s);
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118 // }
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119
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120 // viewport_->SetCentralWidget(instanceWidget.release());
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121 // viewport_->SetSize(width_, height_);
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122
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123
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124 // }
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125
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126 void EMSCRIPTEN_KEEPALIVE NotifyUpdateContent()
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127 {
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128 // TODO Only launch the JavaScript timer if "HasUpdateContent()"
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129 if (viewport_.get() != NULL &&
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130 viewport_->HasUpdateContent())
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131 {
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132 viewport_->UpdateContent();
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133 }
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134
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135 }
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136
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137
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138 void EMSCRIPTEN_KEEPALIVE ViewportSetSize(unsigned int width, unsigned int height)
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139 {
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140 width_ = width;
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141 height_ = height;
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142
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143 if (viewport_.get() != NULL)
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144 {
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145 viewport_->SetSize(width, height);
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146 }
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147 }
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148
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227
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149 int EMSCRIPTEN_KEEPALIVE ViewportRender(OrthancStone::WidgetViewport* viewport,
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150 unsigned int width,
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223
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151 unsigned int height,
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152 uint8_t* data)
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153 {
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154 changeObserver_.Reset();
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155
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156 //printf("ViewportRender called %dx%d\n", width, height);
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157 if (width == 0 ||
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158 height == 0)
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159 {
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160 return 1;
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161 }
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162
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163 Orthanc::ImageAccessor surface;
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164 surface.AssignWritable(Orthanc::PixelFormat_BGRA32, width, height, 4 * width, data);
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165
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227
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166 viewport->Render(surface);
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223
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167
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168 // Convert from BGRA32 memory layout (only color mode supported by
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169 // Cairo, which corresponds to CAIRO_FORMAT_ARGB32) to RGBA32 (as
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170 // expected by HTML5 canvas). This simply amounts to swapping the
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171 // B and R channels.
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172 uint8_t* p = data;
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173 for (unsigned int y = 0; y < height; y++) {
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174 for (unsigned int x = 0; x < width; x++) {
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175 uint8_t tmp = p[0];
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176 p[0] = p[2];
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177 p[2] = tmp;
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178
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179 p += 4;
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180 }
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181 }
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182
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183 return 1;
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184 }
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185
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186
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187 void EMSCRIPTEN_KEEPALIVE ViewportMouseDown(unsigned int rawButton,
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188 int x,
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189 int y,
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190 unsigned int rawModifiers)
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191 {
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192 OrthancStone::MouseButton button;
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193 switch (rawButton)
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194 {
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195 case 0:
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196 button = OrthancStone::MouseButton_Left;
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197 break;
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198
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199 case 1:
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200 button = OrthancStone::MouseButton_Middle;
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201 break;
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202
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203 case 2:
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204 button = OrthancStone::MouseButton_Right;
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205 break;
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206
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207 default:
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208 return; // Unknown button
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209 }
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210
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211 if (viewport_.get() != NULL)
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212 {
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213 viewport_->MouseDown(button, x, y, OrthancStone::KeyboardModifiers_None /* TODO */);
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214 }
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215 }
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216
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217
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218 void EMSCRIPTEN_KEEPALIVE ViewportMouseWheel(int deltaY,
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219 int x,
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220 int y,
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221 int isControl)
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222 {
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223 if (viewport_.get() != NULL &&
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224 deltaY != 0)
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225 {
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226 OrthancStone::MouseWheelDirection direction = (deltaY < 0 ?
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227 OrthancStone::MouseWheelDirection_Up :
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228 OrthancStone::MouseWheelDirection_Down);
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229 OrthancStone::KeyboardModifiers modifiers = OrthancStone::KeyboardModifiers_None;
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230
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231 if (isControl != 0)
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232 {
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233 modifiers = OrthancStone::KeyboardModifiers_Control;
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234 }
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235
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236 viewport_->MouseWheel(direction, x, y, modifiers);
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237 }
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238 }
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239
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240
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241 void EMSCRIPTEN_KEEPALIVE ViewportMouseMove(int x,
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242 int y)
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243 {
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244 if (viewport_.get() != NULL)
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245 {
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246 viewport_->MouseMove(x, y);
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247 }
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248 }
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249
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250 void EMSCRIPTEN_KEEPALIVE ViewportKeyPressed(const char* key,
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251 bool isShiftPressed,
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252 bool isControlPressed,
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253 bool isAltPressed)
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254
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255 {
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256 if (viewport_.get() != NULL)
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257 {
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258 OrthancStone::KeyboardModifiers modifiers = OrthancStone::KeyboardModifiers_None;
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259 if (isShiftPressed) {
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260 modifiers = static_cast<OrthancStone::KeyboardModifiers>(modifiers + OrthancStone::KeyboardModifiers_Shift);
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261 }
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262 if (isControlPressed) {
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263 modifiers = static_cast<OrthancStone::KeyboardModifiers>(modifiers + OrthancStone::KeyboardModifiers_Control);
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264 }
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265 if (isAltPressed) {
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266 modifiers = static_cast<OrthancStone::KeyboardModifiers>(modifiers + OrthancStone::KeyboardModifiers_Alt);
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267 }
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268 printf("key pressed : %c\n", key[0]);
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269 viewport_->KeyPressed(key[0], modifiers);
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270 }
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271 }
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272
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273
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274 void EMSCRIPTEN_KEEPALIVE ViewportMouseUp()
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275 {
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276 if (viewport_.get() != NULL)
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277 {
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278 viewport_->MouseUp();
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279 }
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280 }
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281
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282
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283 void EMSCRIPTEN_KEEPALIVE ViewportMouseEnter()
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284 {
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285 if (viewport_.get() != NULL)
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286 {
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287 viewport_->MouseEnter();
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288 }
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289 }
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290
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291
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292 void EMSCRIPTEN_KEEPALIVE ViewportMouseLeave()
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293 {
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294 if (viewport_.get() != NULL)
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295 {
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296 viewport_->MouseLeave();
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297 }
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298 }
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299
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300
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301 #ifdef __cplusplus
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302 }
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303 #endif
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