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annotate Applications/Samples/WebAssembly/SingleFrameViewer/SingleFrameViewerApp.js @ 1928:c73e696967b0 StoneWebViewer-2.3

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StoneWebViewer-2.3
author Sebastien Jodogne <s.jodogne@gmail.com>
date Thu, 24 Mar 2022 09:08:51 +0100
parents 7053b8a0aaec
children 07964689cb0b
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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
1871
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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 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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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 });