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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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228
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8 #include <algorithm>
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223
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9
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10 static unsigned int width_ = 0;
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11 static unsigned int height_ = 0;
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12
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13 /**********************************/
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14
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15 static std::auto_ptr<OrthancStone::BasicWasmApplication> application;
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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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20 static std::list<std::shared_ptr<OrthancStone::WidgetViewport>> viewports_;
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21
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22 std::shared_ptr<OrthancStone::WidgetViewport> FindViewportSharedPtr(ViewportHandle viewport) {
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23 for (const auto& v : viewports_) {
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24 if (v.get() == viewport) {
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25 return v;
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26 }
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27 assert(false);
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28 }
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29 }
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30
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223
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31 #ifdef __cplusplus
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32 extern "C" {
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33 #endif
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34
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35 using namespace OrthancStone;
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227
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36
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37 // when WASM needs a C++ viewport
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38 ViewportHandle EMSCRIPTEN_KEEPALIVE CreateCppViewport() {
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39
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40 std::shared_ptr<OrthancStone::WidgetViewport> viewport(new OrthancStone::WidgetViewport);
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41 printf("viewport %x\n", viewport.get());
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42
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43 viewports_.push_back(viewport);
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44
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45 printf("There are now %d viewports in C++\n", viewports_.size());
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46
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47 viewport->SetStatusBar(statusBar_);
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48 viewport->Register(changeObserver_);
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49
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50 return viewport.get();
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51 }
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52
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53 // when WASM does not need a viewport anymore, it should release it
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54 void EMSCRIPTEN_KEEPALIVE ReleaseCppViewport(ViewportHandle viewport) {
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55 viewports_.remove_if([viewport](const std::shared_ptr<OrthancStone::WidgetViewport>& v) { return v.get() == viewport;});
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56
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57 printf("There are now %d viewports in C++\n", viewports_.size());
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58 }
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59
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60 void EMSCRIPTEN_KEEPALIVE CreateWasmApplication(ViewportHandle viewport) {
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223
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61
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62 printf("CreateWasmApplication\n");
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63
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64 application.reset(CreateUserApplication());
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65
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66 boost::program_options::options_description options;
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67 application->DeclareStartupOptions(options);
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68 }
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69
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70 void EMSCRIPTEN_KEEPALIVE SetStartupParameter(const char* keyc,
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71 const char* value) {
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72 application->SetStartupParameter(keyc, value);
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73 }
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74
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75 void EMSCRIPTEN_KEEPALIVE StartWasmApplication(ViewportHandle viewport) {
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76
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77 printf("StartWasmApplication\n");
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78
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79 // recreate a command line from uri arguments and parse it
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80 boost::program_options::variables_map parameters;
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81 application->GetStartupParameters(parameters);
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82
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83 BasicWasmApplicationContext& context = dynamic_cast<BasicWasmApplicationContext&>(application->CreateApplicationContext(OrthancStone::WasmWebService::GetInstance(), FindViewportSharedPtr(viewport)));
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84 application->Initialize(statusBar_, parameters);
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85
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86 viewport->SetSize(width_, height_);
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87 printf("StartWasmApplication - completed\n");
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88 }
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89
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90 void EMSCRIPTEN_KEEPALIVE NotifyUpdateContent()
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91 {
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92 for (auto viewport : viewports_) {
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93 // TODO Only launch the JavaScript timer if "HasUpdateContent()"
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94 if (viewport->HasUpdateContent())
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95 {
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96 viewport->UpdateContent();
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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 }
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102
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103
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104 void EMSCRIPTEN_KEEPALIVE ViewportSetSize(ViewportHandle viewport, unsigned int width, unsigned int height)
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105 {
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106 width_ = width;
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107 height_ = height;
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108
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109 viewport->SetSize(width, height);
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110 }
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111
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112 int EMSCRIPTEN_KEEPALIVE ViewportRender(ViewportHandle viewport,
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113 unsigned int width,
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114 unsigned int height,
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115 uint8_t* data)
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116 {
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117 changeObserver_.Reset();
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118
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119 //printf("ViewportRender called %dx%d\n", width, height);
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120 if (width == 0 ||
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121 height == 0)
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122 {
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123 return 1;
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124 }
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125
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126 Orthanc::ImageAccessor surface;
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127 surface.AssignWritable(Orthanc::PixelFormat_BGRA32, width, height, 4 * width, data);
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128
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129 viewport->Render(surface);
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130
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131 // Convert from BGRA32 memory layout (only color mode supported by
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132 // Cairo, which corresponds to CAIRO_FORMAT_ARGB32) to RGBA32 (as
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133 // expected by HTML5 canvas). This simply amounts to swapping the
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134 // B and R channels.
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135 uint8_t* p = data;
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136 for (unsigned int y = 0; y < height; y++) {
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137 for (unsigned int x = 0; x < width; x++) {
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138 uint8_t tmp = p[0];
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139 p[0] = p[2];
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140 p[2] = tmp;
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141
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142 p += 4;
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143 }
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144 }
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145
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146 return 1;
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147 }
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148
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149
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150 void EMSCRIPTEN_KEEPALIVE ViewportMouseDown(ViewportHandle viewport,
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151 unsigned int rawButton,
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152 int x,
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153 int y,
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154 unsigned int rawModifiers)
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155 {
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156 OrthancStone::MouseButton button;
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157 switch (rawButton)
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158 {
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159 case 0:
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160 button = OrthancStone::MouseButton_Left;
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161 break;
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162
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163 case 1:
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164 button = OrthancStone::MouseButton_Middle;
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165 break;
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166
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167 case 2:
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168 button = OrthancStone::MouseButton_Right;
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169 break;
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170
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171 default:
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172 return; // Unknown button
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173 }
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174
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175 viewport->MouseDown(button, x, y, OrthancStone::KeyboardModifiers_None /* TODO */);
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176 }
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177
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178
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179 void EMSCRIPTEN_KEEPALIVE ViewportMouseWheel(ViewportHandle viewport,
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180 int deltaY,
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181 int x,
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182 int y,
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183 int isControl)
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184 {
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185 if (deltaY != 0)
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186 {
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187 OrthancStone::MouseWheelDirection direction = (deltaY < 0 ?
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188 OrthancStone::MouseWheelDirection_Up :
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189 OrthancStone::MouseWheelDirection_Down);
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190 OrthancStone::KeyboardModifiers modifiers = OrthancStone::KeyboardModifiers_None;
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191
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192 if (isControl != 0)
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193 {
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194 modifiers = OrthancStone::KeyboardModifiers_Control;
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195 }
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196
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197 viewport->MouseWheel(direction, x, y, modifiers);
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198 }
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199 }
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200
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201
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202 void EMSCRIPTEN_KEEPALIVE ViewportMouseMove(ViewportHandle viewport,
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203 int x,
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204 int y)
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205 {
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206 viewport->MouseMove(x, y);
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207 }
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208
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209 void EMSCRIPTEN_KEEPALIVE ViewportKeyPressed(ViewportHandle viewport,
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210 const char* key,
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211 bool isShiftPressed,
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212 bool isControlPressed,
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213 bool isAltPressed)
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214
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215 {
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216 OrthancStone::KeyboardModifiers modifiers = OrthancStone::KeyboardModifiers_None;
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217 if (isShiftPressed) {
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218 modifiers = static_cast<OrthancStone::KeyboardModifiers>(modifiers + OrthancStone::KeyboardModifiers_Shift);
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219 }
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220 if (isControlPressed) {
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221 modifiers = static_cast<OrthancStone::KeyboardModifiers>(modifiers + OrthancStone::KeyboardModifiers_Control);
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222 }
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223 if (isAltPressed) {
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224 modifiers = static_cast<OrthancStone::KeyboardModifiers>(modifiers + OrthancStone::KeyboardModifiers_Alt);
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225 }
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226 printf("key pressed : %c\n", key[0]);
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227 viewport->KeyPressed(key[0], modifiers);
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223
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228 }
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229
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230
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231 void EMSCRIPTEN_KEEPALIVE ViewportMouseUp(ViewportHandle viewport)
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223
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232 {
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233 viewport->MouseUp();
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234 }
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235
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236
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237 void EMSCRIPTEN_KEEPALIVE ViewportMouseEnter(ViewportHandle viewport)
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238 {
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239 viewport->MouseEnter();
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240 }
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241
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242
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243 void EMSCRIPTEN_KEEPALIVE ViewportMouseLeave(ViewportHandle viewport)
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244 {
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245 viewport->MouseLeave();
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246 }
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247
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248
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249 #ifdef __cplusplus
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250 }
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251 #endif
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