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annotate Platforms/Wasm/wasm-application.ts @ 238:126c9c0c9333 am

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SimpleViewer demo running both with SDL and Wasm
author am@osimis.io
date Wed, 20 Jun 2018 09:25:39 +0200
parents f73d722d98c8
children ddbb339ed4cf
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1 ///<reference path='stone-framework-loader.ts'/>
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2 ///<reference path='wasm-viewport.ts'/>
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3
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4 if (!('WebAssembly' in window)) {
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5 alert('Sorry, your browser does not support WebAssembly :(');
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6 }
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7
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8 declare var StoneFrameworkModule : Stone.Framework;
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9
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10 // global functions
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11 var WasmWebService_NotifyError: Function = null;
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12 var WasmWebService_NotifySuccess: Function = null;
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13 var NotifyUpdateContent: Function = null;
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14 var SetStartupParameter: Function = null;
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15 var CreateWasmApplication: Function = null;
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16 var CreateCppViewport: Function = null;
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17 var ReleaseCppViewport: Function = null;
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18 var StartWasmApplication: Function = null;
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19
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20
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21 function UpdateContentThread() {
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22 if (NotifyUpdateContent != null) {
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23 NotifyUpdateContent();
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24 }
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25
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26 setTimeout(UpdateContentThread, 100); // Update the viewport content every 100ms if need be
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27 }
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29
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30 function GetUriParameters() {
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31 var parameters = window.location.search.substr(1);
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32
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33 if (parameters != null &&
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34 parameters != '') {
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35 var result = {};
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36 var tokens = parameters.split('&');
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37
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38 for (var i = 0; i < tokens.length; i++) {
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39 var tmp = tokens[i].split('=');
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40 if (tmp.length == 2) {
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41 result[tmp[0]] = decodeURIComponent(tmp[1]);
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42 }
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43 }
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44
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45 return result;
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46 }
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47 else {
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48 return {};
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49 }
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50 }
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51
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52 module Stone {
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53
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54 export class WasmApplication {
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55
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56 private viewport_: WasmViewport;
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57 private canvasId_: string;
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58
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59 private pimpl_: any; // Private pointer to the underlying WebAssembly C++ object
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60
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61 public constructor(canvasId: string) {
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62 this.canvasId_ = canvasId;
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63 //this.module_ = module;
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64 }
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65 }
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66 }
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68
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69 function _InitializeWasmApplication(canvasId: string): void {
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70
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71 /************************************** */
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72 CreateWasmApplication();
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73
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74 // parse uri and transmit the parameters to the app before initializing it
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75 var parameters = GetUriParameters();
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76
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77 for (var key in parameters) {
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78 if (parameters.hasOwnProperty(key)) {
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79 SetStartupParameter(key, parameters[key]);
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80 }
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81 }
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82
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83 StartWasmApplication();
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84 /************************************** */
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85
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86 UpdateContentThread();
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87 }
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88
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89 function InitializeWasmApplication(wasmModuleName: string) {
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90
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91 Stone.Framework.Configure(wasmModuleName);
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92
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93 // Wait for the Orthanc Framework to be initialized (this initializes
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94 // the WebAssembly environment) and then, create and initialize the Wasm application
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95 Stone.Framework.Initialize(true, function () {
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96
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97 console.log("Connecting C++ methods to JS methods");
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98
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99 SetStartupParameter = StoneFrameworkModule.cwrap('SetStartupParameter', null, ['string', 'string']);
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100 CreateWasmApplication = StoneFrameworkModule.cwrap('CreateWasmApplication', null, ['number']);
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101 CreateCppViewport = StoneFrameworkModule.cwrap('CreateCppViewport', 'number', []);
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102 ReleaseCppViewport = StoneFrameworkModule.cwrap('ReleaseCppViewport', null, ['number']);
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103 StartWasmApplication = StoneFrameworkModule.cwrap('StartWasmApplication', null, ['number']);
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104
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105 WasmWebService_NotifySuccess = StoneFrameworkModule.cwrap('WasmWebService_NotifySuccess', null, ['number', 'string', 'array', 'number', 'number']);
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106 WasmWebService_NotifyError = StoneFrameworkModule.cwrap('WasmWebService_NotifyError', null, ['number', 'string', 'number']);
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107 NotifyUpdateContent = StoneFrameworkModule.cwrap('NotifyUpdateContent', null, []);
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108
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109 // Prevent scrolling
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110 document.body.addEventListener('touchmove', function (event) {
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111 event.preventDefault();
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112 }, false);
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113
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114 _InitializeWasmApplication("canvas");
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115 });
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116 }