Mercurial > hg > orthanc-stone
annotate OrthancStone/Sources/Platforms/WebAssembly/WebGLViewportsRegistry.h @ 1956:1e5ba130f041
move to Orthanc framework 1.11.2
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Thu, 27 Oct 2022 10:52:21 +0200 |
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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) 2017-2022 Osimis S.A., Belgium |
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6 * Copyright (C) 2021-2022 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 } |