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annotate Samples/WebAssembly/SingleFrameViewer/SingleFrameViewerApp.js @ 1393:27e0a00bd3e8

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RtViewer SingleFrameViewer OK : wasm SDL single viewport other viewports ongoing
author Benjamin Golinvaux <bgo@osimis.io>
date Wed, 29 Apr 2020 15:54:18 +0200
parents 240531afdd2d
children
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1
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2 // This object wraps the functions exposed by the wasm module
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3
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4 const WasmModuleWrapper = function() {
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5 this._InitializeViewport = undefined;
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6 this._LoadFromOrthanc = undefined;
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7 };
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8
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9 WasmModuleWrapper.prototype.Setup = function(Module) {
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10 this._InitializeViewport = Module.cwrap('InitializeViewport', null, [ 'string' ]);
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11 this._LoadFromOrthanc = Module.cwrap('LoadFromOrthanc', null, [ 'string', 'int' ]);
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12 };
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13
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14 WasmModuleWrapper.prototype.InitializeViewport = function(canvasId) {
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15 this._InitializeViewport(canvasId);
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16 };
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17
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18 WasmModuleWrapper.prototype.LoadFromOrthanc = function(instance, frame) {
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19 this._LoadFromOrthanc(instance, frame);
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20 };
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21
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22 var wasmModuleWrapper = new WasmModuleWrapper();
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23
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24 $(document).ready(function() {
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25
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26 window.addEventListener('WasmModuleInitialized', function() {
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27 wasmModuleWrapper.Setup(Module);
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28 console.warn('Native C++ module initialized');
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29
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30 wasmModuleWrapper.InitializeViewport('viewport');
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31 });
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32
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33 window.addEventListener('StoneException', function() {
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34 alert('Exception caught in C++ code');
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35 });
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36
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37 var scriptSource;
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38
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39 if ('WebAssembly' in window) {
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40 console.warn('Loading WebAssembly');
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41 scriptSource = 'SingleFrameViewerWasm.js';
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42 } else {
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43 console.error('Your browser does not support WebAssembly!');
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44 }
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45
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46 // Option 1: Loading script using plain HTML
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47
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48 /*
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49 var script = document.createElement('script');
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50 script.src = scriptSource;
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51 script.type = 'text/javascript';
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52 document.body.appendChild(script);
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53 */
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55 // Option 2: Loading script using AJAX (gives the opportunity to
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56 // report explicit errors)
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57
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58 axios.get(scriptSource)
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59 .then(function (response) {
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60 var script = document.createElement('script');
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61 script.innerHTML = response.data;
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62 script.type = 'text/javascript';
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63 document.body.appendChild(script);
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64 })
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65 .catch(function (error) {
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66 alert('Cannot load the WebAssembly framework');
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67 });
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68 });
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71 $('#orthancLoad').click(function() {
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72 wasmModuleWrapper.LoadFromOrthanc($('#orthancInstance').val(),
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73 $('#orthancFrame').val());
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74 });