Mercurial > hg > orthanc-stone

annotate OrthancStone/Sources/Viewport/WebAssemblyViewport.cpp @ 1558:314b6dc507d9

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fix
author Sebastien Jodogne <s.jodogne@gmail.com>
date Thu, 20 Aug 2020 11:38:56 +0200
parents a6f339d8e4c2
children b8b4cb58a874
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1 /**
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2 * Stone of Orthanc
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3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
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4 * Department, University Hospital of Liege, Belgium
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5 * Copyright (C) 2017-2020 Osimis S.A., Belgium
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6 *
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7 * This program is free software: you can redistribute it and/or
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8 * modify it under the terms of the GNU Affero General Public License
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9 * as published by the Free Software Foundation, either version 3 of
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10 * the License, or (at your option) any later version.
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11 *
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12 * This program is distributed in the hope that it will be useful, but
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13 * WITHOUT ANY WARRANTY; without even the implied warranty of
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14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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15 * Affero General Public License for more details.
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16 *
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17 * You should have received a copy of the GNU Affero General Public License
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18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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19 **/
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20
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21
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22 #if defined(ORTHANC_BUILDING_STONE_LIBRARY) && ORTHANC_BUILDING_STONE_LIBRARY == 1
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23 # include "WebAssemblyViewport.h"
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24 # include "DefaultViewportInteractor.h"
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25 # include "../Toolbox/GenericToolbox.h"
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26 # include "../Scene2DViewport/ViewportController.h"
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27 #else
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28 // This is the case when using the WebAssembly side module, and this
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29 // source file must be compiled within the WebAssembly main module
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30 # include <Viewport/WebAssemblyViewport.h>
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31 # include <Toolbox/GenericToolbox.h>
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32 # include <Scene2DViewport/ViewportController.h>
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33 # include <Viewport/DefaultViewportInteractor.h>
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34 #endif
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35
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36
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37 #include <OrthancException.h>
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38
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39 #include <boost/make_shared.hpp>
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40 #include <boost/enable_shared_from_this.hpp>
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41
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42 namespace OrthancStone
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43 {
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44 static void ConvertMouseEvent(PointerEvent& target,
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45 const EmscriptenMouseEvent& source,
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46 const ICompositor& compositor)
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47 {
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48 int x = static_cast<int>(source.targetX);
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49 int y = static_cast<int>(source.targetY);
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50
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51 switch (source.button)
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52 {
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53 case 0:
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54 target.SetMouseButton(MouseButton_Left);
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55 break;
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56
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57 case 1:
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58 target.SetMouseButton(MouseButton_Middle);
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59 break;
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60
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61 case 2:
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62 target.SetMouseButton(MouseButton_Right);
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63 break;
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64
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65 default:
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66 target.SetMouseButton(MouseButton_None);
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67 break;
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68 }
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69
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70 target.AddPosition(compositor.GetPixelCenterCoordinates(x, y));
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71 target.SetAltModifier(source.altKey);
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72 target.SetControlModifier(source.ctrlKey);
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73 target.SetShiftModifier(source.shiftKey);
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74 }
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75
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76
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77 class WebAssemblyViewport::WasmLock : public ILock
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78 {
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79 private:
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80 WebAssemblyViewport& that_;
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81
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82 public:
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83 WasmLock(WebAssemblyViewport& that) :
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84 that_(that)
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85 {
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86 }
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87
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88 virtual bool HasCompositor() const ORTHANC_OVERRIDE
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89 {
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90 return that_.compositor_.get() != NULL;
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91 }
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92
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93 virtual ICompositor& GetCompositor() ORTHANC_OVERRIDE
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94 {
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95 if (that_.compositor_.get() == NULL)
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96 {
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97 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls);
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98 }
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99 else
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100 {
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101 return *that_.compositor_;
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102 }
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103 }
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104
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105 virtual ViewportController& GetController() ORTHANC_OVERRIDE
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106 {
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107 assert(that_.controller_);
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108 return *that_.controller_;
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109 }
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110
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111 virtual void Invalidate() ORTHANC_OVERRIDE
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112 {
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113 that_.Invalidate();
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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 EM_BOOL WebAssemblyViewport::OnRequestAnimationFrame(double time, void *userData)
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119 {
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120 LOG(TRACE) << __func__;
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121 WebAssemblyViewport* that = reinterpret_cast<WebAssemblyViewport*>(userData);
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122
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123 if (that->compositor_.get() != NULL &&
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124 that->controller_ /* should always be true */)
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125 {
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126 that->Paint(*that->compositor_, *that->controller_);
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127 }
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128
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129 LOG(TRACE) << "Exiting: " << __func__;
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130 return true;
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131 }
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132
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133 EM_BOOL WebAssemblyViewport::OnResize(int eventType, const EmscriptenUiEvent *uiEvent, void *userData)
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134 {
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135 LOG(TRACE) << __func__;
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136 WebAssemblyViewport* that = reinterpret_cast<WebAssemblyViewport*>(userData);
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137
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138 if (that->compositor_.get() != NULL)
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139 {
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140 that->UpdateSize(*that->compositor_);
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141 that->Invalidate();
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142 }
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143
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144 LOG(TRACE) << "Exiting: " << __func__;
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145 return true;
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146 }
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147
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148
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149 EM_BOOL WebAssemblyViewport::OnMouseDown(int eventType, const EmscriptenMouseEvent *mouseEvent, void *userData)
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150 {
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151 WebAssemblyViewport* that = reinterpret_cast<WebAssemblyViewport*>(userData);
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152
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153 LOG(TRACE) << "mouse down: " << that->GetCanvasCssSelector();
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154
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155 if (that->compositor_.get() != NULL &&
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156 that->interactor_.get() != NULL)
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157 {
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158 PointerEvent pointer;
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159 ConvertMouseEvent(pointer, *mouseEvent, *that->compositor_);
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160
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161 that->controller_->HandleMousePress(*that->interactor_, pointer,
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162 that->compositor_->GetCanvasWidth(),
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163 that->compositor_->GetCanvasHeight());
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164 that->Invalidate();
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165 }
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166
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167 LOG(TRACE) << "Exiting: " << __func__;
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168 return true;
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169 }
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170
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171
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172 EM_BOOL WebAssemblyViewport::OnMouseMove(int eventType, const EmscriptenMouseEvent *mouseEvent, void *userData)
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173 {
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174 WebAssemblyViewport* that = reinterpret_cast<WebAssemblyViewport*>(userData);
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175
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176 if (that->compositor_.get() != NULL &&
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177 that->controller_->HasActiveTracker())
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178 {
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179 PointerEvent pointer;
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180 ConvertMouseEvent(pointer, *mouseEvent, *that->compositor_);
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181 if (that->controller_->HandleMouseMove(pointer))
1050
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182 {
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183 that->Invalidate();
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184 }
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185 }
956
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186
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187 LOG(TRACE) << "Exiting: " << __func__;
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188 return true;
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189 }
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190
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191 EM_BOOL WebAssemblyViewport::OnMouseUp(int eventType, const EmscriptenMouseEvent *mouseEvent, void *userData)
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192 {
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193 LOG(TRACE) << __func__;
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194 WebAssemblyViewport* that = reinterpret_cast<WebAssemblyViewport*>(userData);
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195
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196 if (that->compositor_.get() != NULL)
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197 {
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198 PointerEvent pointer;
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199 ConvertMouseEvent(pointer, *mouseEvent, *that->compositor_);
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200 that->controller_->HandleMouseRelease(pointer);
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201 that->Invalidate();
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202 }
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203
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204 LOG(TRACE) << "Exiting: " << __func__;
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205 return true;
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206 }
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207
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208 void WebAssemblyViewport::Invalidate()
942
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diff changeset
209 {
1331
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diff changeset
210 emscripten_request_animation_frame(OnRequestAnimationFrame, reinterpret_cast<void*>(this));
1232
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211 }
942
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diff changeset
212
1232
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213 void WebAssemblyViewport::AcquireCompositor(ICompositor* compositor /* takes ownership */)
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214 {
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215 if (compositor == NULL)
942
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216 {
1232
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217 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer);
942
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218 }
1232
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diff changeset
219 else
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220 {
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221 compositor_.reset(compositor);
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222 }
942
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diff changeset
223 }
907
722ee73e6ba2 cleanup + started to implement WebAssemblyCairoViewport (wip)
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diff changeset
224
1356
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diff changeset
225 #if DISABLE_DEPRECATED_FIND_EVENT_TARGET_BEHAVIOR == 1
d8bb885e9b0a Checking DISABLE_DEPRECATED_FIND_EVENT_TARGET_BEHAVIOR
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226 // everything OK..... we're using the new setting
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diff changeset
227 #else
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228 #pragma message("WARNING: DISABLE_DEPRECATED_FIND_EVENT_TARGET_BEHAVIOR is not defined or equal to 0. Stone will use the OLD Emscripten rules for DOM element selection.")
d8bb885e9b0a Checking DISABLE_DEPRECATED_FIND_EVENT_TARGET_BEHAVIOR
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diff changeset
229 #endif
d8bb885e9b0a Checking DISABLE_DEPRECATED_FIND_EVENT_TARGET_BEHAVIOR
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diff changeset
230
1318
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diff changeset
231 WebAssemblyViewport::WebAssemblyViewport(
1346
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diff changeset
232 const std::string& canvasId, bool enableEmscriptenMouseEvents) :
1351
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diff changeset
233 canvasId_(canvasId),
1356
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diff changeset
234 #if DISABLE_DEPRECATED_FIND_EVENT_TARGET_BEHAVIOR == 1
1351
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diff changeset
235 canvasCssSelector_("#" + canvasId),
1356
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diff changeset
236 #else
d8bb885e9b0a Checking DISABLE_DEPRECATED_FIND_EVENT_TARGET_BEHAVIOR
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diff changeset
237 canvasCssSelector_(canvasId),
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diff changeset
238 #endif
1331
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diff changeset
239 interactor_(new DefaultViewportInteractor),
1346
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diff changeset
240 enableEmscriptenMouseEvents_(enableEmscriptenMouseEvents)
1331
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diff changeset
241 {
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diff changeset
242 }
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diff changeset
243
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diff changeset
244 void WebAssemblyViewport::PostConstructor()
907
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diff changeset
245 {
1331
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diff changeset
246 boost::shared_ptr<IViewport> viewport = shared_from_this();
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247 controller_.reset(new ViewportController(viewport));
1232
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diff changeset
248
1331
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diff changeset
249 LOG(INFO) << "Initializing Stone viewport on HTML canvas: "
1480
4de884c95cd8 fix includes in WebAssemblyCairoViewport
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diff changeset
250 << canvasId_;
907
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diff changeset
251
1351
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diff changeset
252 if (canvasId_.empty() ||
1b8e37770d78 ID vs CSS selector distinction in API and field names.
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diff changeset
253 canvasId_[0] == '#')
1232
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diff changeset
254 {
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diff changeset
255 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange,
1331
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diff changeset
256 "The canvas identifier must not start with '#'");
1232
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diff changeset
257 }
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diff changeset
258
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diff changeset
259 // Disable right-click on the canvas (i.e. context menu)
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diff changeset
260 EM_ASM({
1331
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diff changeset
261 document.getElementById(UTF8ToString($0)).oncontextmenu =
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diff changeset
262 function(event)
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diff changeset
263 {
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264 event.preventDefault();
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265 }
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266 },
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267 canvasId_.c_str() // $0
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268 );
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269
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270 // It is not possible to monitor the resizing of individual
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271 // canvas, so we track the full window of the browser
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272 emscripten_set_resize_callback(EMSCRIPTEN_EVENT_TARGET_WINDOW,
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273 reinterpret_cast<void*>(this),
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274 false,
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275 OnResize);
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276
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277 if (enableEmscriptenMouseEvents_)
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278 {
1318
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279
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280 // if any of this function causes an error in the console, please
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281 // make sure you are using the new (as of 1.39.x) version of
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282 // emscripten element lookup rules( pass
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283 // "-s DISABLE_DEPRECATED_FIND_EVENT_TARGET_BEHAVIOR=1" to the linker.
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284
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285 emscripten_set_mousedown_callback(canvasCssSelector_.c_str(),
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286 reinterpret_cast<void*>(this),
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287 false,
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288 OnMouseDown);
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289
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290 emscripten_set_mousemove_callback(canvasCssSelector_.c_str(),
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291 reinterpret_cast<void*>(this),
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292 false,
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293 OnMouseMove);
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294
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295 emscripten_set_mouseup_callback(canvasCssSelector_.c_str(),
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296 reinterpret_cast<void*>(this),
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297 false,
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298 OnMouseUp);
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299 }
907
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300 }
722ee73e6ba2 cleanup + started to implement WebAssemblyCairoViewport (wip)
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301
1489
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302 void WebAssemblyViewport::UpdateCanvasSize()
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303 {
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304 UpdateSize(*compositor_);
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305 }
6e43cac7833c Added public method to update canvas pixel size from CSS size
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306
1331
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307 WebAssemblyViewport::~WebAssemblyViewport()
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308 {
1346
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309 emscripten_set_resize_callback(EMSCRIPTEN_EVENT_TARGET_WINDOW,
df8bf351c23f The flag that allows the WebAssemblyViewport to
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310 reinterpret_cast<void*>(this),
df8bf351c23f The flag that allows the WebAssemblyViewport to
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311 false,
df8bf351c23f The flag that allows the WebAssemblyViewport to
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312 NULL);
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313
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314 if (enableEmscriptenMouseEvents_)
1331
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315 {
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316
1351
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317 emscripten_set_mousedown_callback(canvasCssSelector_.c_str(),
1331
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318 reinterpret_cast<void*>(this),
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319 false,
1480
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320 NULL);
1331
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diff changeset
321
1351
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322 emscripten_set_mousemove_callback(canvasCssSelector_.c_str(),
1331
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323 reinterpret_cast<void*>(this),
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324 false,
1480
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325 NULL);
1331
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diff changeset
326
1351
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327 emscripten_set_mouseup_callback(canvasCssSelector_.c_str(),
1331
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diff changeset
328 reinterpret_cast<void*>(this),
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diff changeset
329 false,
1480
4de884c95cd8 fix includes in WebAssemblyCairoViewport
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diff changeset
330 NULL);
1331
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diff changeset
331 }
ab81ee8fce1f - Viewport is not passed and stored as a shared_ptr instead
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diff changeset
332 }
1232
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diff changeset
333
a28861abf888 viewports for WebAssembly
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334 IViewport::ILock* WebAssemblyViewport::Lock()
910
a6c12fe88bcb wip: WebAssemblyCairoViewport: still need to implement blit to canvas
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diff changeset
335 {
1232
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336 return new WasmLock(*this);
910
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diff changeset
337 }
1232
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338
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339 void WebAssemblyViewport::AcquireInteractor(IViewportInteractor* interactor)
910
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diff changeset
340 {
1232
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341 if (interactor == NULL)
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diff changeset
342 {
a28861abf888 viewports for WebAssembly
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343 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer);
a28861abf888 viewports for WebAssembly
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344 }
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parents: 1054
diff changeset
345 else
a28861abf888 viewports for WebAssembly
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diff changeset
346 {
a28861abf888 viewports for WebAssembly
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diff changeset
347 interactor_.reset(interactor);
a28861abf888 viewports for WebAssembly
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diff changeset
348 }
910
a6c12fe88bcb wip: WebAssemblyCairoViewport: still need to implement blit to canvas
Alain Mazy <alain@mazy.be>
parents: 907
diff changeset
349 }
891
0aff28f15ea2 new abstraction: IViewport
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
350 }