Mercurial > hg > orthanc-stone

annotate Platforms/Wasm/stone-framework-loader.ts @ 509:1b9973905e15 bgo-commands-codegen

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Fix to use js callbacks attached to 'window' + dummy changes in cmake files
author Benjamin Golinvaux <bgo@osimis.io>
date Wed, 06 Mar 2019 10:57:02 +0100
parents 5055031f4a06
children 548eed46f535
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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
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6 export declare type InitializationCallback = () => void;
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7
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8 //export declare var StoneFrameworkModule : any;
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9 export var StoneFrameworkModule : any;
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10
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11 //const ASSETS_FOLDER : string = "assets/lib";
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12 //const WASM_FILENAME : string = "orthanc-framework";
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13
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14 export class Framework
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15 {
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16 private static singleton_ : Framework = null;
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17 private static wasmModuleName_ : string = null;
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18
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19 public static Configure(wasmModuleName: string) {
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20 this.wasmModuleName_ = wasmModuleName;
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21 }
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22
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23 private constructor(verbose : boolean)
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24 {
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25 //this.ccall('Initialize', null, [ 'number' ], [ verbose ]);
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26 }
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27
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28
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29 public ccall( name: string,
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30 returnType: string,
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31 argTypes: Array<string>,
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32 argValues: Array<any>) : any
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33 {
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34 return (<any> window).StoneFrameworkModule.ccall(name, returnType, argTypes, argValues);
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35 }
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36
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37
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38 public cwrap( name: string,
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39 returnType: string,
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40 argTypes: Array<string>) : any
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41 {
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42 return (<any> window).StoneFrameworkModule.cwrap(name, returnType, argTypes);
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43 }
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44
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45
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46 public static GetInstance() : Framework
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47 {
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48 if (Framework.singleton_ == null) {
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49 throw new Error('The WebAssembly module is not loaded yet');
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50 } else {
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51 return Framework.singleton_;
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52 }
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53 }
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54
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55
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56 public static Initialize( verbose: boolean,
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57 callback: InitializationCallback)
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58 {
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59 console.log('Initializing WebAssembly Module');
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60
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61 // (<any> window).
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62 (<any> window).StoneFrameworkModule = {
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63 preRun: [
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64 function() {
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65 console.log('Loading the Stone Framework using WebAssembly');
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66 }
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67 ],
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68 postRun: [
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69 function() {
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70 // This function is called by ".js" wrapper once the ".wasm"
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71 // WebAssembly module has been loaded and compiled by the
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72 // browser
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73 console.log('WebAssembly is ready');
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74 Framework.singleton_ = new Framework(verbose);
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75 callback();
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76 }
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77 ],
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78 print: function(text : string) {
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79 console.log(text);
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80 },
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81 printErr: function(text : string) {
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82 console.error(text);
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83 },
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84 totalDependencies: 0
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85 };
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86
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87 // Dynamic loading of the JavaScript wrapper around WebAssembly
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88 var script = document.createElement('script');
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89 script.type = 'application/javascript';
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90 //script.src = "orthanc-stone.js"; // ASSETS_FOLDER + '/' + WASM_FILENAME + '.js';
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91 script.src = this.wasmModuleName_ + ".js";// "OrthancStoneSimpleViewer.js"; // ASSETS_FOLDER + '/' + WASM_FILENAME + '.js';
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92 script.async = true;
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93 document.head.appendChild(script);
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94 }
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95 }