Mercurial > hg > orthanc-stone

annotate Platforms/Wasm/stone-framework-loader.ts @ 585:b9ce24c606ae

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TextSceneLayer
author Sebastien Jodogne <s.jodogne@gmail.com>
date Fri, 19 Apr 2019 17:57:58 +0200
parents 548eed46f535
children 70992b38aa8a
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1 /**
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2 * This file contains primitives to interface with WebAssembly and
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3 * with the Stone framework.
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4 **/
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5 import * as Logger from './logger'
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6
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7 export declare type InitializationCallback = () => void;
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8
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9 //export declare var StoneFrameworkModule : any;
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10 export var StoneFrameworkModule : any;
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11
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12 //const ASSETS_FOLDER : string = "assets/lib";
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13 //const WASM_FILENAME : string = "orthanc-framework";
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14
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15 export class Framework
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16 {
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17 private static singleton_ : Framework = null;
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18 private static wasmModuleName_ : string = null;
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19
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20 public static Configure(wasmModuleName: string) {
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21 this.wasmModuleName_ = wasmModuleName;
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22 }
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23
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24 private constructor(verbose : boolean)
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25 {
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26 //this.ccall('Initialize', null, [ 'number' ], [ verbose ]);
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27 }
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28
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29
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30 public ccall( name: string,
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31 returnType: string,
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32 argTypes: Array<string>,
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33 argValues: Array<any>) : any
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34 {
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35 return (<any> window).StoneFrameworkModule.ccall(name, returnType, argTypes, argValues);
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36 }
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37
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38
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39 public cwrap( name: string,
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40 returnType: string,
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41 argTypes: Array<string>) : any
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42 {
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43 return (<any> window).StoneFrameworkModule.cwrap(name, returnType, argTypes);
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44 }
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45
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46
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47 public static GetInstance() : Framework
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48 {
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49 if (Framework.singleton_ == null) {
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50 throw new Error('The WebAssembly module is not loaded yet');
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51 } else {
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52 return Framework.singleton_;
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53 }
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54 }
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55
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56
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57 public static Initialize( verbose: boolean,
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58 callback: InitializationCallback)
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59 {
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60 Logger.defaultLogger.debug('Initializing WebAssembly Module');
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61
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62 // (<any> window).
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63 (<any> window).StoneFrameworkModule = {
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64 preRun: [
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65 function() {
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66 Logger.defaultLogger.debug('Loading the Stone Framework using WebAssembly');
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67 }
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68 ],
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69 postRun: [
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70 function() {
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71 // This function is called by ".js" wrapper once the ".wasm"
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72 // WebAssembly module has been loaded and compiled by the
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73 // browser
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74 Logger.defaultLogger.debug('WebAssembly is ready');
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75 Framework.singleton_ = new Framework(verbose);
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76 callback();
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77 }
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78 ],
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79 print: function(text : string) {
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80 Logger.defaultLogger.infoFromCpp(text);
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81 },
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82 printErr: function(text : string) {
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83 Logger.defaultLogger.errorFromCpp(text);
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84 },
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85 totalDependencies: 0
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86 };
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87
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88 // Dynamic loading of the JavaScript wrapper around WebAssembly
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89 var script = document.createElement('script');
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90 script.type = 'application/javascript';
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91 //script.src = "orthanc-stone.js"; // ASSETS_FOLDER + '/' + WASM_FILENAME + '.js';
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92 script.src = this.wasmModuleName_ + ".js";// "OrthancStoneSimpleViewer.js"; // ASSETS_FOLDER + '/' + WASM_FILENAME + '.js';
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93 script.async = true;
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94 document.head.appendChild(script);
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95 }
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96 }