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annotate OrthancStone/Sources/Platforms/WebAssembly/WebGLViewportsRegistry.h @ 2124:16c01cc201e7

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updated copyright, as Osimis is not active on Orthanc anymore
author Sebastien Jodogne <s.jodogne@gmail.com>
date Thu, 30 May 2024 17:00:29 +0200
parents c23eef785569
children
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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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16c01cc201e7 updated copyright, as Osimis is not active on Orthanc anymore
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5 * Copyright (C) 2017-2023 Osimis S.A., Belgium
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6 * Copyright (C) 2021-2024 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 Lesser 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 * Lesser 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 Lesser General Public
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19 * License along with this program. If not, see
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20 * <http://www.gnu.org/licenses/>.
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21 **/
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22
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23
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24 #pragma once
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25
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26 #include "WebGLViewport.h"
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27
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28 #include <boost/enable_shared_from_this.hpp>
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29
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30 namespace OrthancStone
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31 {
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32 /**
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33 * This singleton class must be used if many WebGL viewports are
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34 * created by the higher-level application, implying possible loss
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35 * of WebGL contexts. The object will run an infinite update loop
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36 * that checks whether all the WebGL context are still valid (not
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37 * lost). If some WebGL context is lost, it is automatically
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38 * reinitialized by created a fresh HTML5 canvas.
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39 **/
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40 class WebGLViewportsRegistry : public boost::noncopyable,
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41 public boost::enable_shared_from_this<WebGLViewportsRegistry>
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42 {
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43 private:
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44 typedef std::map<std::string, boost::shared_ptr<WebGLViewport> > Viewports;
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45
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46 double timeoutMS_;
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47 Viewports viewports_;
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48 long timeOutID_;
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49
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50 void LaunchTimer();
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51
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52 void OnTimeout();
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53
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54 static void OnTimeoutCallback(void *userData);
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55
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56 public:
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57 explicit WebGLViewportsRegistry(double timeoutMS /* in milliseconds */);
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58
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59 ~WebGLViewportsRegistry();
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60
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61 boost::shared_ptr<WebGLViewport> Add(const std::string& canvasId);
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62
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63 void Remove(const std::string& canvasId);
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64
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65 void Clear();
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66
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67 class Accessor : public boost::noncopyable
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68 {
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69 private:
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70 WebGLViewportsRegistry& that_;
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71 std::unique_ptr<IViewport::ILock> lock_;
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72
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73 public:
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74 Accessor(WebGLViewportsRegistry& that,
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75 const std::string& canvasId);
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76
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77 bool IsValid() const
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78 {
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79 return lock_.get() != NULL;
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80 }
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81
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82 IViewport::ILock& GetViewport() const;
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83 };
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84
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85
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86
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87 static void FinalizeGlobalRegistry();
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88
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89 static void SetGlobalRegistryTimeout(double timeout);
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90
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91 static WebGLViewportsRegistry& GetGlobalRegistry();
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92 };
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93 }