Mercurial > hg > orthanc-stone

annotate Applications/Platforms/WebAssembly/WebGLViewportsRegistry.cpp @ 1870:3889ae96d2e9

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added copyright UCLouvain
author Sebastien Jodogne <s.jodogne@gmail.com>
date Tue, 11 Jan 2022 11:04:09 +0100
parents 9ac2a65d4172
children 7053b8a0aaec
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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) 2017-2021 Osimis S.A., Belgium
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6 * Copyright (C) 2021-2021 Sebastien Jodogne, ICTEAM UCLouvain, Belgium
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7 *
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8 * This program is free software: you can redistribute it and/or
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9 * modify it under the terms of the GNU Affero General Public License
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10 * as published by the Free Software Foundation, either version 3 of
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11 * the License, or (at your option) any later version.
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12 *
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13 * This program is distributed in the hope that it will be useful, but
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14 * WITHOUT ANY WARRANTY; without even the implied warranty of
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15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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16 * Affero General Public License for more details.
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17 *
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18 * You should have received a copy of the GNU Affero General Public License
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19 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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20 **/
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21
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22
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23 #include "WebGLViewportsRegistry.h"
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25 #include "../../../OrthancStone/Sources/Scene2DViewport/ViewportController.h"
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26 #include "../../../OrthancStone/Sources/Toolbox/GenericToolbox.h"
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27
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28 #include <OrthancException.h>
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30 #include <boost/make_shared.hpp>
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31
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33 static double viewportsTimeout_ = 1000;
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34 static std::unique_ptr<OrthancStone::WebGLViewportsRegistry> globalRegistry_;
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37 namespace OrthancStone
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38 {
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39 void WebGLViewportsRegistry::LaunchTimer()
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40 {
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41 timeOutID_ = emscripten_set_timeout(
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42 OnTimeoutCallback,
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43 timeoutMS_,
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44 reinterpret_cast<void*>(this));
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45 }
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46
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47 void WebGLViewportsRegistry::OnTimeout()
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48 {
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49 for (Viewports::iterator it = viewports_.begin();
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50 it != viewports_.end();
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51 ++it)
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52 {
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53 if (it->second == NULL ||
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54 it->second->IsContextLost())
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55 {
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56 LOG(INFO) << "WebGL context lost for canvas: " << it->first;
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57
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58 // Try and duplicate the HTML5 canvas in the DOM
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59 EM_ASM({
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60 var canvas = document.getElementById(UTF8ToString($0));
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61 if (canvas) {
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62 var parent = canvas.parentElement;
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63 if (parent) {
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64 var cloned = canvas.cloneNode(true /* deep copy */);
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65 parent.insertBefore(cloned, canvas);
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66 parent.removeChild(canvas);
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67 }
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68 }
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69 },
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70 it->first.c_str() // $0 = ID of the canvas
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71 );
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72
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73 // At this point, the old canvas is removed from the DOM and
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74 // replaced by a fresh one with the same ID: Recreate the
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75 // WebGL context on the new canvas
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76 boost::shared_ptr<WebGLViewport> viewport;
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77
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78 // we need to steal the properties from the old viewport
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79 // and set them to the new viewport
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80 {
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81 std::unique_ptr<IViewport::ILock> lock(it->second->Lock());
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82
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83 // TODO: remove ViewportController
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84 Scene2D* scene = lock->GetController().ReleaseScene();
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85 viewport = WebGLViewport::Create(it->first);
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86
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87 {
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88 std::unique_ptr<IViewport::ILock> newLock(viewport->Lock());
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89 newLock->GetController().AcquireScene(scene);
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90 }
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91 }
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92
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93 // Replace the old WebGL viewport by the new one
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94 it->second = viewport;
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95
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96 // Tag the fresh canvas as needing a repaint
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97 {
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98 std::unique_ptr<IViewport::ILock> lock(it->second->Lock());
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99 lock->Invalidate();
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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 LaunchTimer();
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105 }
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106
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107 void WebGLViewportsRegistry::OnTimeoutCallback(void *userData)
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108 {
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109 // This object dies with the process or tab.
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110 WebGLViewportsRegistry* that =
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111 reinterpret_cast<WebGLViewportsRegistry*>(userData);
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112 that->OnTimeout();
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113 }
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114
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115 WebGLViewportsRegistry::WebGLViewportsRegistry(double timeoutMS) :
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116 timeoutMS_(timeoutMS),
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117 timeOutID_(0)
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118 {
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119 if (timeoutMS <= 0)
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120 {
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121 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange);
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122 }
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123
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124 LaunchTimer();
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125 }
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126
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127 WebGLViewportsRegistry::~WebGLViewportsRegistry()
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128 {
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129 emscripten_clear_timeout(timeOutID_);
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130 Clear();
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131 }
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132
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133 boost::shared_ptr<WebGLViewport> WebGLViewportsRegistry::Add(
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134 const std::string& canvasId)
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135 {
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136 if (viewports_.find(canvasId) != viewports_.end())
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137 {
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Sebastien Jodogne <s.jodogne@gmail.com>
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138 LOG(ERROR) << "Canvas was already registered: " << canvasId;
a28861abf888 viewports for WebAssembly
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139 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls);
a28861abf888 viewports for WebAssembly
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140 }
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Sebastien Jodogne <s.jodogne@gmail.com>
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141 else
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parents:
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142 {
1331
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Benjamin Golinvaux <bgo@osimis.io>
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143 boost::shared_ptr<WebGLViewport> viewport =
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144 WebGLViewport::Create(canvasId);
1242
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145 viewports_[canvasId] = viewport;
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146 return viewport;
1232
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147 }
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148 }
1331
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Benjamin Golinvaux <bgo@osimis.io>
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diff changeset
149
1232
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150 void WebGLViewportsRegistry::Remove(const std::string& canvasId)
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151 {
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152 Viewports::iterator found = viewports_.find(canvasId);
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153
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154 if (found == viewports_.end())
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155 {
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156 LOG(ERROR) << "Cannot remove unregistered canvas: " << canvasId;
a28861abf888 viewports for WebAssembly
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157 }
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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158 else
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parents:
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159 {
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160 viewports_.erase(found);
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parents:
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161 }
a28861abf888 viewports for WebAssembly
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parents:
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162 }
1331
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Benjamin Golinvaux <bgo@osimis.io>
parents: 1299
diff changeset
163
1235
e71ee3e88448 WebGLViewportsRegistry in milliseconds, and Clear()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1232
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164 void WebGLViewportsRegistry::Clear()
e71ee3e88448 WebGLViewportsRegistry in milliseconds, and Clear()
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parents: 1232
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165 {
e71ee3e88448 WebGLViewportsRegistry in milliseconds, and Clear()
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diff changeset
166 viewports_.clear();
e71ee3e88448 WebGLViewportsRegistry in milliseconds, and Clear()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1232
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167 }
e71ee3e88448 WebGLViewportsRegistry in milliseconds, and Clear()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1232
diff changeset
168
1232
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
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169 WebGLViewportsRegistry::Accessor::Accessor(WebGLViewportsRegistry& that,
a28861abf888 viewports for WebAssembly
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parents:
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170 const std::string& canvasId) :
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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171 that_(that)
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
172 {
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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173 Viewports::iterator viewport = that.viewports_.find(canvasId);
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
174 if (viewport != that.viewports_.end() &&
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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175 viewport->second != NULL)
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
176 {
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
177 lock_.reset(viewport->second->Lock());
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
178 }
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
179 }
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
180
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
181 IViewport::ILock& WebGLViewportsRegistry::Accessor::GetViewport() const
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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182 {
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
183 if (IsValid())
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
184 {
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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185 return *lock_;
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
186 }
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
187 else
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
188 {
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
189 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls);
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
190 }
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
191 }
1591
5887a4f8594b moving platform-specific files out of the "OrthancStone" folder
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1558
diff changeset
192
5887a4f8594b moving platform-specific files out of the "OrthancStone" folder
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1558
diff changeset
193
5887a4f8594b moving platform-specific files out of the "OrthancStone" folder
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1558
diff changeset
194 void WebGLViewportsRegistry::FinalizeGlobalRegistry()
5887a4f8594b moving platform-specific files out of the "OrthancStone" folder
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1558
diff changeset
195 {
5887a4f8594b moving platform-specific files out of the "OrthancStone" folder
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1558
diff changeset
196 globalRegistry_.reset();
5887a4f8594b moving platform-specific files out of the "OrthancStone" folder
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1558
diff changeset
197 }
5887a4f8594b moving platform-specific files out of the "OrthancStone" folder
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1558
diff changeset
198
5887a4f8594b moving platform-specific files out of the "OrthancStone" folder
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1558
diff changeset
199
5887a4f8594b moving platform-specific files out of the "OrthancStone" folder
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1558
diff changeset
200 void WebGLViewportsRegistry::SetGlobalRegistryTimeout(double timeout)
5887a4f8594b moving platform-specific files out of the "OrthancStone" folder
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1558
diff changeset
201 {
5887a4f8594b moving platform-specific files out of the "OrthancStone" folder
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1558
diff changeset
202 if (globalRegistry_.get())
5887a4f8594b moving platform-specific files out of the "OrthancStone" folder
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1558
diff changeset
203 {
5887a4f8594b moving platform-specific files out of the "OrthancStone" folder
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1558
diff changeset
204 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls);
5887a4f8594b moving platform-specific files out of the "OrthancStone" folder
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1558
diff changeset
205 }
5887a4f8594b moving platform-specific files out of the "OrthancStone" folder
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1558
diff changeset
206 else
5887a4f8594b moving platform-specific files out of the "OrthancStone" folder
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1558
diff changeset
207 {
5887a4f8594b moving platform-specific files out of the "OrthancStone" folder
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1558
diff changeset
208 viewportsTimeout_ = timeout;
5887a4f8594b moving platform-specific files out of the "OrthancStone" folder
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1558
diff changeset
209 }
5887a4f8594b moving platform-specific files out of the "OrthancStone" folder
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1558
diff changeset
210 }
5887a4f8594b moving platform-specific files out of the "OrthancStone" folder
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1558
diff changeset
211
5887a4f8594b moving platform-specific files out of the "OrthancStone" folder
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1558
diff changeset
212
5887a4f8594b moving platform-specific files out of the "OrthancStone" folder
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1558
diff changeset
213 WebGLViewportsRegistry& WebGLViewportsRegistry::GetGlobalRegistry()
5887a4f8594b moving platform-specific files out of the "OrthancStone" folder
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1558
diff changeset
214 {
5887a4f8594b moving platform-specific files out of the "OrthancStone" folder
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1558
diff changeset
215 if (globalRegistry_.get() == NULL)
5887a4f8594b moving platform-specific files out of the "OrthancStone" folder
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1558
diff changeset
216 {
5887a4f8594b moving platform-specific files out of the "OrthancStone" folder
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1558
diff changeset
217 globalRegistry_.reset(new WebGLViewportsRegistry(viewportsTimeout_));
5887a4f8594b moving platform-specific files out of the "OrthancStone" folder
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1558
diff changeset
218 }
5887a4f8594b moving platform-specific files out of the "OrthancStone" folder
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1558
diff changeset
219
5887a4f8594b moving platform-specific files out of the "OrthancStone" folder
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1558
diff changeset
220 return *globalRegistry_;
5887a4f8594b moving platform-specific files out of the "OrthancStone" folder
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1558
diff changeset
221 }
1232
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
222 }