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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 }
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229
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28 assert(false);
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29 return std::shared_ptr<OrthancStone::WidgetViewport>();
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228
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30 }
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31
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223
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32 #ifdef __cplusplus
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33 extern "C" {
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34 #endif
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35
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36 using namespace OrthancStone;
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227
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37
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38 // when WASM needs a C++ viewport
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39 ViewportHandle EMSCRIPTEN_KEEPALIVE CreateCppViewport() {
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40
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41 std::shared_ptr<OrthancStone::WidgetViewport> viewport(new OrthancStone::WidgetViewport);
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42 printf("viewport %x\n", viewport.get());
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43
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44 viewports_.push_back(viewport);
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45
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46 printf("There are now %d viewports in C++\n", viewports_.size());
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47
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48 viewport->SetStatusBar(statusBar_);
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49 viewport->Register(changeObserver_);
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50
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51 return viewport.get();
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52 }
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53
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54 // when WASM does not need a viewport anymore, it should release it
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55 void EMSCRIPTEN_KEEPALIVE ReleaseCppViewport(ViewportHandle viewport) {
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56 viewports_.remove_if([viewport](const std::shared_ptr<OrthancStone::WidgetViewport>& v) { return v.get() == viewport;});
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57
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58 printf("There are now %d viewports in C++\n", viewports_.size());
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59 }
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60
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61 void EMSCRIPTEN_KEEPALIVE CreateWasmApplication(ViewportHandle viewport) {
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62
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63 printf("CreateWasmApplication\n");
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64
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65 application.reset(CreateUserApplication());
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66
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67 boost::program_options::options_description options;
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68 application->DeclareStartupOptions(options);
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69 }
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70
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71 void EMSCRIPTEN_KEEPALIVE SetStartupParameter(const char* keyc,
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72 const char* value) {
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73 application->SetStartupParameter(keyc, value);
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74 }
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75
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76 void EMSCRIPTEN_KEEPALIVE StartWasmApplication(ViewportHandle viewport) {
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77
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78 printf("StartWasmApplication\n");
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79
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80 // recreate a command line from uri arguments and parse it
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81 boost::program_options::variables_map parameters;
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82 application->GetStartupParameters(parameters);
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83
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84 BasicWasmApplicationContext& context = dynamic_cast<BasicWasmApplicationContext&>(application->CreateApplicationContext(OrthancStone::WasmWebService::GetInstance(), FindViewportSharedPtr(viewport)));
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85 application->Initialize(statusBar_, parameters);
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86
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87 viewport->SetSize(width_, height_);
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88 printf("StartWasmApplication - completed\n");
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89 }
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90
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91 void EMSCRIPTEN_KEEPALIVE NotifyUpdateContent()
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92 {
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93 for (auto viewport : viewports_) {
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94 // TODO Only launch the JavaScript timer if "HasUpdateContent()"
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95 if (viewport->HasUpdateContent())
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96 {
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97 viewport->UpdateContent();
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98 }
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99
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223
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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
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105 void EMSCRIPTEN_KEEPALIVE ViewportSetSize(ViewportHandle viewport, unsigned int width, unsigned int height)
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106 {
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107 width_ = width;
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108 height_ = height;
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109
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110 viewport->SetSize(width, height);
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111 }
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112
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113 int EMSCRIPTEN_KEEPALIVE ViewportRender(ViewportHandle viewport,
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114 unsigned int width,
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115 unsigned int height,
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116 uint8_t* data)
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117 {
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118 changeObserver_.Reset();
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119
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120 //printf("ViewportRender called %dx%d\n", width, height);
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121 if (width == 0 ||
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122 height == 0)
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123 {
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124 return 1;
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125 }
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126
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127 Orthanc::ImageAccessor surface;
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128 surface.AssignWritable(Orthanc::PixelFormat_BGRA32, width, height, 4 * width, data);
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129
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130 viewport->Render(surface);
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131
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132 // Convert from BGRA32 memory layout (only color mode supported by
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133 // Cairo, which corresponds to CAIRO_FORMAT_ARGB32) to RGBA32 (as
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134 // expected by HTML5 canvas). This simply amounts to swapping the
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135 // B and R channels.
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136 uint8_t* p = data;
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137 for (unsigned int y = 0; y < height; y++) {
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138 for (unsigned int x = 0; x < width; x++) {
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139 uint8_t tmp = p[0];
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140 p[0] = p[2];
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141 p[2] = tmp;
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142
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143 p += 4;
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144 }
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145 }
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146
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147 return 1;
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148 }
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149
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150
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228
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151 void EMSCRIPTEN_KEEPALIVE ViewportMouseDown(ViewportHandle viewport,
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152 unsigned int rawButton,
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223
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153 int x,
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154 int y,
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155 unsigned int rawModifiers)
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156 {
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157 OrthancStone::MouseButton button;
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158 switch (rawButton)
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159 {
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160 case 0:
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161 button = OrthancStone::MouseButton_Left;
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162 break;
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163
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164 case 1:
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165 button = OrthancStone::MouseButton_Middle;
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166 break;
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167
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168 case 2:
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169 button = OrthancStone::MouseButton_Right;
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170 break;
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171
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172 default:
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173 return; // Unknown button
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174 }
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175
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176 viewport->MouseDown(button, x, y, OrthancStone::KeyboardModifiers_None /* TODO */);
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177 }
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178
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179
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180 void EMSCRIPTEN_KEEPALIVE ViewportMouseWheel(ViewportHandle viewport,
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181 int deltaY,
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182 int x,
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183 int y,
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184 int isControl)
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185 {
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186 if (deltaY != 0)
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187 {
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188 OrthancStone::MouseWheelDirection direction = (deltaY < 0 ?
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189 OrthancStone::MouseWheelDirection_Up :
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190 OrthancStone::MouseWheelDirection_Down);
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191 OrthancStone::KeyboardModifiers modifiers = OrthancStone::KeyboardModifiers_None;
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192
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193 if (isControl != 0)
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194 {
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195 modifiers = OrthancStone::KeyboardModifiers_Control;
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196 }
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197
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198 viewport->MouseWheel(direction, x, y, modifiers);
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199 }
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200 }
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201
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202
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203 void EMSCRIPTEN_KEEPALIVE ViewportMouseMove(ViewportHandle viewport,
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204 int x,
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205 int y)
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206 {
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207 viewport->MouseMove(x, y);
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208 }
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209
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210 void EMSCRIPTEN_KEEPALIVE ViewportKeyPressed(ViewportHandle viewport,
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211 const char* key,
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212 bool isShiftPressed,
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213 bool isControlPressed,
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214 bool isAltPressed)
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215
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216 {
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217 OrthancStone::KeyboardModifiers modifiers = OrthancStone::KeyboardModifiers_None;
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218 if (isShiftPressed) {
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219 modifiers = static_cast<OrthancStone::KeyboardModifiers>(modifiers + OrthancStone::KeyboardModifiers_Shift);
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223
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220 }
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221 if (isControlPressed) {
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222 modifiers = static_cast<OrthancStone::KeyboardModifiers>(modifiers + OrthancStone::KeyboardModifiers_Control);
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223 }
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224 if (isAltPressed) {
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225 modifiers = static_cast<OrthancStone::KeyboardModifiers>(modifiers + OrthancStone::KeyboardModifiers_Alt);
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226 }
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227 printf("key pressed : %c\n", key[0]);
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228 viewport->KeyPressed(key[0], modifiers);
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223
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229 }
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230
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231
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228
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232 void EMSCRIPTEN_KEEPALIVE ViewportMouseUp(ViewportHandle viewport)
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223
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233 {
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234 viewport->MouseUp();
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235 }
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236
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237
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238 void EMSCRIPTEN_KEEPALIVE ViewportMouseEnter(ViewportHandle viewport)
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239 {
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240 viewport->MouseEnter();
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241 }
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242
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243
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244 void EMSCRIPTEN_KEEPALIVE ViewportMouseLeave(ViewportHandle viewport)
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245 {
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246 viewport->MouseLeave();
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247 }
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248
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249
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250 #ifdef __cplusplus
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251 }
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252 #endif
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