Mercurial > hg > orthanc-stone
annotate Applications/Samples/WebAssembly/SingleFrameViewer/SingleFrameViewerApp.js @ 2107:5970030a413c
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author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Fri, 24 Nov 2023 11:29:46 +0100 |
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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) 2017-2023 Osimis S.A., Belgium |
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6 * Copyright (C) 2021-2023 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 // This object wraps the functions exposed by the wasm module |
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24 |
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25 const WasmModuleWrapper = function() { |
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26 this._InitializeViewport = undefined; |
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27 this._LoadFromOrthanc = undefined; |
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28 }; |
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29 |
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30 WasmModuleWrapper.prototype.Setup = function(Module) { |
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31 this._InitializeViewport = Module.cwrap('InitializeViewport', null, [ 'string' ]); |
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32 this._LoadFromOrthanc = Module.cwrap('LoadFromOrthanc', null, [ 'string', 'int' ]); |
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33 }; |
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34 |
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35 WasmModuleWrapper.prototype.InitializeViewport = function(canvasId) { |
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36 this._InitializeViewport(canvasId); |
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37 }; |
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38 |
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39 WasmModuleWrapper.prototype.LoadFromOrthanc = function(instance, frame) { |
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40 this._LoadFromOrthanc(instance, frame); |
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41 }; |
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42 |
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43 var wasmModuleWrapper = new WasmModuleWrapper(); |
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44 |
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45 $(document).ready(function() { |
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46 |
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47 window.addEventListener('WasmModuleInitialized', function() { |
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48 wasmModuleWrapper.Setup(Module); |
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49 console.warn('Native C++ module initialized'); |
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50 |
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51 wasmModuleWrapper.InitializeViewport('viewport'); |
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52 }); |
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53 |
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54 window.addEventListener('StoneException', function() { |
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55 alert('Exception caught in C++ code'); |
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56 }); |
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57 |
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58 var scriptSource; |
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59 |
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60 if ('WebAssembly' in window) { |
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61 console.warn('Loading WebAssembly'); |
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62 scriptSource = 'SingleFrameViewerWasm.js'; |
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63 } else { |
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64 console.error('Your browser does not support WebAssembly!'); |
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65 } |
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66 |
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67 // Option 1: Loading script using plain HTML |
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68 |
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69 /* |
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70 var script = document.createElement('script'); |
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71 script.src = scriptSource; |
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72 script.type = 'text/javascript'; |
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73 document.body.appendChild(script); |
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74 */ |
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75 |
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76 // Option 2: Loading script using AJAX (gives the opportunity to |
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77 // report explicit errors) |
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78 |
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79 axios.get(scriptSource) |
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80 .then(function (response) { |
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81 var script = document.createElement('script'); |
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82 script.innerHTML = response.data; |
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83 script.type = 'text/javascript'; |
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84 document.body.appendChild(script); |
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85 }) |
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86 .catch(function (error) { |
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87 alert('Cannot load the WebAssembly framework'); |
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88 }); |
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89 }); |
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90 |
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91 |
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92 $('#orthancLoad').click(function() { |
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93 wasmModuleWrapper.LoadFromOrthanc($('#orthancInstance').val(), |
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94 $('#orthancFrame').val()); |
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95 }); |