Mercurial > hg > orthanc-stone
comparison Applications/Platforms/WebAssembly/WebGLViewportsRegistry.cpp @ 1591:5887a4f8594b
moving platform-specific files out of the "OrthancStone" folder
author | Sebastien Jodogne <s.jodogne@gmail.com> |
---|---|
date | Fri, 23 Oct 2020 13:15:03 +0200 |
parents | OrthancStone/Sources/Viewport/WebGLViewportsRegistry.cpp@314b6dc507d9 |
children | 9ac2a65d4172 |
comparison
equal
deleted
inserted
replaced
1590:7b963bccafef | 1591:5887a4f8594b |
---|---|
1 /** | |
2 * Stone of Orthanc | |
3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
4 * Department, University Hospital of Liege, Belgium | |
5 * Copyright (C) 2017-2020 Osimis S.A., Belgium | |
6 * | |
7 * This program is free software: you can redistribute it and/or | |
8 * modify it under the terms of the GNU Affero General Public License | |
9 * as published by the Free Software Foundation, either version 3 of | |
10 * the License, or (at your option) any later version. | |
11 * | |
12 * This program is distributed in the hope that it will be useful, but | |
13 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 * Affero General Public License for more details. | |
16 * | |
17 * You should have received a copy of the GNU Affero General Public License | |
18 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
19 **/ | |
20 | |
21 | |
22 #include "WebGLViewportsRegistry.h" | |
23 | |
24 #include "../../../OrthancStone/Sources/Scene2DViewport/ViewportController.h" | |
25 #include "../../../OrthancStone/Sources/Toolbox/GenericToolbox.h" | |
26 | |
27 #include <OrthancException.h> | |
28 | |
29 #include <boost/make_shared.hpp> | |
30 | |
31 | |
32 static double viewportsTimeout_ = 1000; | |
33 static std::unique_ptr<OrthancStone::WebGLViewportsRegistry> globalRegistry_; | |
34 | |
35 | |
36 namespace OrthancStone | |
37 { | |
38 void WebGLViewportsRegistry::LaunchTimer() | |
39 { | |
40 timeOutID_ = emscripten_set_timeout( | |
41 OnTimeoutCallback, | |
42 timeoutMS_, | |
43 reinterpret_cast<void*>(this)); | |
44 } | |
45 | |
46 void WebGLViewportsRegistry::OnTimeout() | |
47 { | |
48 for (Viewports::iterator it = viewports_.begin(); | |
49 it != viewports_.end(); | |
50 ++it) | |
51 { | |
52 if (it->second == NULL || | |
53 it->second->IsContextLost()) | |
54 { | |
55 LOG(INFO) << "WebGL context lost for canvas: " << it->first; | |
56 | |
57 // Try and duplicate the HTML5 canvas in the DOM | |
58 EM_ASM({ | |
59 var canvas = document.getElementById(UTF8ToString($0)); | |
60 if (canvas) { | |
61 var parent = canvas.parentElement; | |
62 if (parent) { | |
63 var cloned = canvas.cloneNode(true /* deep copy */); | |
64 parent.insertBefore(cloned, canvas); | |
65 parent.removeChild(canvas); | |
66 } | |
67 } | |
68 }, | |
69 it->first.c_str() // $0 = ID of the canvas | |
70 ); | |
71 | |
72 // At this point, the old canvas is removed from the DOM and | |
73 // replaced by a fresh one with the same ID: Recreate the | |
74 // WebGL context on the new canvas | |
75 boost::shared_ptr<WebGLViewport> viewport; | |
76 | |
77 // we need to steal the properties from the old viewport | |
78 // and set them to the new viewport | |
79 { | |
80 std::unique_ptr<IViewport::ILock> lock(it->second->Lock()); | |
81 | |
82 // TODO: remove ViewportController | |
83 Scene2D* scene = lock->GetController().ReleaseScene(); | |
84 viewport = WebGLViewport::Create(it->first); | |
85 | |
86 { | |
87 std::unique_ptr<IViewport::ILock> newLock(viewport->Lock()); | |
88 newLock->GetController().AcquireScene(scene); | |
89 } | |
90 } | |
91 | |
92 // Replace the old WebGL viewport by the new one | |
93 it->second = viewport; | |
94 | |
95 // Tag the fresh canvas as needing a repaint | |
96 { | |
97 std::unique_ptr<IViewport::ILock> lock(it->second->Lock()); | |
98 lock->Invalidate(); | |
99 } | |
100 } | |
101 } | |
102 | |
103 LaunchTimer(); | |
104 } | |
105 | |
106 void WebGLViewportsRegistry::OnTimeoutCallback(void *userData) | |
107 { | |
108 // This object dies with the process or tab. | |
109 WebGLViewportsRegistry* that = | |
110 reinterpret_cast<WebGLViewportsRegistry*>(userData); | |
111 that->OnTimeout(); | |
112 } | |
113 | |
114 WebGLViewportsRegistry::WebGLViewportsRegistry(double timeoutMS) : | |
115 timeoutMS_(timeoutMS), | |
116 timeOutID_(0) | |
117 { | |
118 if (timeoutMS <= 0) | |
119 { | |
120 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
121 } | |
122 | |
123 LaunchTimer(); | |
124 } | |
125 | |
126 WebGLViewportsRegistry::~WebGLViewportsRegistry() | |
127 { | |
128 emscripten_clear_timeout(timeOutID_); | |
129 Clear(); | |
130 } | |
131 | |
132 boost::shared_ptr<WebGLViewport> WebGLViewportsRegistry::Add( | |
133 const std::string& canvasId) | |
134 { | |
135 if (viewports_.find(canvasId) != viewports_.end()) | |
136 { | |
137 LOG(ERROR) << "Canvas was already registered: " << canvasId; | |
138 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); | |
139 } | |
140 else | |
141 { | |
142 boost::shared_ptr<WebGLViewport> viewport = | |
143 WebGLViewport::Create(canvasId); | |
144 viewports_[canvasId] = viewport; | |
145 return viewport; | |
146 } | |
147 } | |
148 | |
149 void WebGLViewportsRegistry::Remove(const std::string& canvasId) | |
150 { | |
151 Viewports::iterator found = viewports_.find(canvasId); | |
152 | |
153 if (found == viewports_.end()) | |
154 { | |
155 LOG(ERROR) << "Cannot remove unregistered canvas: " << canvasId; | |
156 } | |
157 else | |
158 { | |
159 viewports_.erase(found); | |
160 } | |
161 } | |
162 | |
163 void WebGLViewportsRegistry::Clear() | |
164 { | |
165 viewports_.clear(); | |
166 } | |
167 | |
168 WebGLViewportsRegistry::Accessor::Accessor(WebGLViewportsRegistry& that, | |
169 const std::string& canvasId) : | |
170 that_(that) | |
171 { | |
172 Viewports::iterator viewport = that.viewports_.find(canvasId); | |
173 if (viewport != that.viewports_.end() && | |
174 viewport->second != NULL) | |
175 { | |
176 lock_.reset(viewport->second->Lock()); | |
177 } | |
178 } | |
179 | |
180 IViewport::ILock& WebGLViewportsRegistry::Accessor::GetViewport() const | |
181 { | |
182 if (IsValid()) | |
183 { | |
184 return *lock_; | |
185 } | |
186 else | |
187 { | |
188 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); | |
189 } | |
190 } | |
191 | |
192 | |
193 void WebGLViewportsRegistry::FinalizeGlobalRegistry() | |
194 { | |
195 globalRegistry_.reset(); | |
196 } | |
197 | |
198 | |
199 void WebGLViewportsRegistry::SetGlobalRegistryTimeout(double timeout) | |
200 { | |
201 if (globalRegistry_.get()) | |
202 { | |
203 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); | |
204 } | |
205 else | |
206 { | |
207 viewportsTimeout_ = timeout; | |
208 } | |
209 } | |
210 | |
211 | |
212 WebGLViewportsRegistry& WebGLViewportsRegistry::GetGlobalRegistry() | |
213 { | |
214 if (globalRegistry_.get() == NULL) | |
215 { | |
216 globalRegistry_.reset(new WebGLViewportsRegistry(viewportsTimeout_)); | |
217 } | |
218 | |
219 return *globalRegistry_; | |
220 } | |
221 } |