Mercurial > hg > orthanc-stone
comparison OrthancStone/Sources/Viewport/WebGLViewportsRegistry.cpp @ 1512:244ad1e4e76a
reorganization of folders
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Tue, 07 Jul 2020 16:21:02 +0200 |
parents | Framework/Viewport/WebGLViewportsRegistry.cpp@30deba7bc8e2 |
children | 314b6dc507d9 |
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1511:9dfeee74c1e6 | 1512:244ad1e4e76a |
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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 "../Toolbox/GenericToolbox.h" | |
25 | |
26 #include <OrthancException.h> | |
27 | |
28 #include <boost/make_shared.hpp> | |
29 | |
30 namespace OrthancStone | |
31 { | |
32 void WebGLViewportsRegistry::LaunchTimer() | |
33 { | |
34 timeOutID_ = emscripten_set_timeout( | |
35 OnTimeoutCallback, | |
36 timeoutMS_, | |
37 reinterpret_cast<void*>(this)); | |
38 } | |
39 | |
40 void WebGLViewportsRegistry::OnTimeout() | |
41 { | |
42 for (Viewports::iterator it = viewports_.begin(); | |
43 it != viewports_.end(); | |
44 ++it) | |
45 { | |
46 if (it->second == NULL || | |
47 it->second->IsContextLost()) | |
48 { | |
49 LOG(INFO) << "WebGL context lost for canvas: " << it->first; | |
50 | |
51 // Try and duplicate the HTML5 canvas in the DOM | |
52 EM_ASM({ | |
53 var canvas = document.getElementById(UTF8ToString($0)); | |
54 if (canvas) { | |
55 var parent = canvas.parentElement; | |
56 if (parent) { | |
57 var cloned = canvas.cloneNode(true /* deep copy */); | |
58 parent.insertBefore(cloned, canvas); | |
59 parent.removeChild(canvas); | |
60 } | |
61 } | |
62 }, | |
63 it->first.c_str() // $0 = ID of the canvas | |
64 ); | |
65 | |
66 // At this point, the old canvas is removed from the DOM and | |
67 // replaced by a fresh one with the same ID: Recreate the | |
68 // WebGL context on the new canvas | |
69 boost::shared_ptr<WebGLViewport> viewport; | |
70 | |
71 // we need to steal the properties from the old viewport | |
72 // and set them to the new viewport | |
73 { | |
74 std::unique_ptr<IViewport::ILock> lock(it->second->Lock()); | |
75 | |
76 // TODO: remove ViewportController | |
77 Scene2D* scene = lock->GetController().ReleaseScene(); | |
78 viewport = WebGLViewport::Create(it->first); | |
79 | |
80 { | |
81 std::unique_ptr<IViewport::ILock> newLock(viewport->Lock()); | |
82 newLock->GetController().AcquireScene(scene); | |
83 } | |
84 } | |
85 | |
86 // Replace the old WebGL viewport by the new one | |
87 it->second = viewport; | |
88 | |
89 // Tag the fresh canvas as needing a repaint | |
90 { | |
91 std::unique_ptr<IViewport::ILock> lock(it->second->Lock()); | |
92 lock->Invalidate(); | |
93 } | |
94 } | |
95 } | |
96 | |
97 LaunchTimer(); | |
98 } | |
99 | |
100 void WebGLViewportsRegistry::OnTimeoutCallback(void *userData) | |
101 { | |
102 // This object dies with the process or tab. | |
103 WebGLViewportsRegistry* that = | |
104 reinterpret_cast<WebGLViewportsRegistry*>(userData); | |
105 that->OnTimeout(); | |
106 } | |
107 | |
108 WebGLViewportsRegistry::WebGLViewportsRegistry(double timeoutMS) : | |
109 timeoutMS_(timeoutMS), | |
110 timeOutID_(0) | |
111 { | |
112 if (timeoutMS <= 0) | |
113 { | |
114 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
115 } | |
116 | |
117 LaunchTimer(); | |
118 } | |
119 | |
120 WebGLViewportsRegistry::~WebGLViewportsRegistry() | |
121 { | |
122 emscripten_clear_timeout(timeOutID_); | |
123 Clear(); | |
124 } | |
125 | |
126 boost::shared_ptr<WebGLViewport> WebGLViewportsRegistry::Add( | |
127 const std::string& canvasId) | |
128 { | |
129 if (viewports_.find(canvasId) != viewports_.end()) | |
130 { | |
131 LOG(ERROR) << "Canvas was already registered: " << canvasId; | |
132 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); | |
133 } | |
134 else | |
135 { | |
136 boost::shared_ptr<WebGLViewport> viewport = | |
137 WebGLViewport::Create(canvasId); | |
138 viewports_[canvasId] = viewport; | |
139 return viewport; | |
140 } | |
141 } | |
142 | |
143 void WebGLViewportsRegistry::Remove(const std::string& canvasId) | |
144 { | |
145 Viewports::iterator found = viewports_.find(canvasId); | |
146 | |
147 if (found == viewports_.end()) | |
148 { | |
149 LOG(ERROR) << "Cannot remove unregistered canvas: " << canvasId; | |
150 } | |
151 else | |
152 { | |
153 viewports_.erase(found); | |
154 } | |
155 } | |
156 | |
157 void WebGLViewportsRegistry::Clear() | |
158 { | |
159 viewports_.clear(); | |
160 } | |
161 | |
162 WebGLViewportsRegistry::Accessor::Accessor(WebGLViewportsRegistry& that, | |
163 const std::string& canvasId) : | |
164 that_(that) | |
165 { | |
166 Viewports::iterator viewport = that.viewports_.find(canvasId); | |
167 if (viewport != that.viewports_.end() && | |
168 viewport->second != NULL) | |
169 { | |
170 lock_.reset(viewport->second->Lock()); | |
171 } | |
172 } | |
173 | |
174 IViewport::ILock& WebGLViewportsRegistry::Accessor::GetViewport() const | |
175 { | |
176 if (IsValid()) | |
177 { | |
178 return *lock_; | |
179 } | |
180 else | |
181 { | |
182 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); | |
183 } | |
184 } | |
185 } |