ngx-opencv
Version:
Angular service for implementing the OpenCV library in angular based applications
107 lines • 12.4 kB
JavaScript
import { __decorate, __metadata, __param } from "tslib";
import { Inject, Injectable, InjectionToken, NgZone } from '@angular/core';
import { BehaviorSubject } from 'rxjs';
import * as i0 from "@angular/core";
export const OpenCvConfigToken = new InjectionToken('OpenCV config object token');
let NgxOpenCVService = class NgxOpenCVService {
constructor(options, _ngZone) {
this._ngZone = _ngZone;
this.cvState = new BehaviorSubject({
ready: false,
error: false,
loading: true,
state: 'loading'
});
if (!options) {
options = {};
}
this.configModule = this.generateConfigModule(options);
this.loadOpenCv();
}
/**
* load the OpenCV script
*/
loadOpenCv() {
this.cvState.next(this.newState('loading'));
// create global module variable
window['Module'] = this.configModule;
// create script element and set attributes
const script = document.createElement('script');
script.setAttribute('async', '');
script.setAttribute('type', 'text/javascript');
// listen for errors
script.addEventListener('error', () => {
const err = new Error('Failed to load ' + this.configModule.scriptUrl);
this.cvState.next(this.newState('error'));
this.cvState.error(err);
}, { passive: true });
// set script url
script.src = this.configModule.scriptUrl;
// insert script as first script tag
const node = document.getElementsByTagName('script')[0];
if (node) {
node.parentNode.insertBefore(script, node);
}
else {
document.head.appendChild(script);
}
}
/**
* generates a new state object
* @param change - the new state of the module
*/
newState(change) {
const newStateObj = {
ready: false,
loading: false,
error: false,
state: ''
};
Object.keys(newStateObj).forEach(key => {
if (key !== 'state') {
if (key === change) {
newStateObj[key] = true;
newStateObj.state = key;
}
else {
newStateObj[key] = false;
}
}
});
return newStateObj;
}
/**
* generates a config module for the global Module object
* @param options - configuration options
*/
generateConfigModule(options) {
return {
scriptUrl: options.openCVDirPath ? `${options.openCVDirPath}/opencv.js` : `/assets/opencv/opencv.js`,
wasmBinaryFile: 'opencv_js.wasm',
usingWasm: true,
onRuntimeInitialized: () => {
this._ngZone.run(() => {
console.log('openCV Ready');
this.cvState.next(this.newState('ready'));
if (options.runOnOpenCVInit) {
options.runOnOpenCVInit();
}
});
}
};
}
};
NgxOpenCVService.ctorParameters = () => [
{ type: undefined, decorators: [{ type: Inject, args: [OpenCvConfigToken,] }] },
{ type: NgZone }
];
NgxOpenCVService.ɵprov = i0.ɵɵdefineInjectable({ factory: function NgxOpenCVService_Factory() { return new NgxOpenCVService(i0.ɵɵinject(OpenCvConfigToken), i0.ɵɵinject(i0.NgZone)); }, token: NgxOpenCVService, providedIn: "root" });
NgxOpenCVService = __decorate([
Injectable({
providedIn: 'root'
}),
__param(0, Inject(OpenCvConfigToken)),
__metadata("design:paramtypes", [Object, NgZone])
], NgxOpenCVService);
export { NgxOpenCVService };
//# sourceMappingURL=data:application/json;base64,{"version":3,"file":"ngx-open-cv.service.js","sourceRoot":"ng://ngx-opencv/","sources":["lib/ngx-open-cv.service.ts"],"names":[],"mappings":";AAAA,OAAO,EAAC,MAAM,EAAE,UAAU,EAAE,cAAc,EAAE,MAAM,EAAC,MAAM,eAAe,CAAC;AACzE,OAAO,EAAC,eAAe,EAAC,MAAM,MAAM,CAAC;;AAGrC,MAAM,CAAC,MAAM,iBAAiB,GAAG,IAAI,cAAc,CAAe,4BAA4B,CAAC,CAAC;AAKhG,IAAa,gBAAgB,GAA7B,MAAa,gBAAgB;IAU3B,YAAuC,OAAqB,EAAU,OAAe;QAAf,YAAO,GAAP,OAAO,CAAQ;QARrF,YAAO,GAAG,IAAI,eAAe,CAAc;YACzC,KAAK,EAAE,KAAK;YACZ,KAAK,EAAE,KAAK;YACZ,OAAO,EAAE,IAAI;YACb,KAAK,EAAE,SAAS;SACjB,CAAC,CAAC;QAID,IAAI,CAAC,OAAO,EAAE;YACZ,OAAO,GAAG,EAAE,CAAC;SACd;QACD,IAAI,CAAC,YAAY,GAAG,IAAI,CAAC,oBAAoB,CAAC,OAAO,CAAC,CAAC;QACvD,IAAI,CAAC,UAAU,EAAE,CAAC;IACpB,CAAC;IAED;;OAEG;IACH,UAAU;QACR,IAAI,CAAC,OAAO,CAAC,IAAI,CAAE,IAAI,CAAC,QAAQ,CAAC,SAAS,CAAC,CAAC,CAAC;QAC7C,gCAAgC;QAChC,MAAM,CAAC,QAAQ,CAAC,GAAG,IAAI,CAAC,YAAY,CAAC;QAErC,2CAA2C;QAC3C,MAAM,MAAM,GAAuB,QAAQ,CAAC,aAAa,CAAC,QAAQ,CAAC,CAAC;QACpE,MAAM,CAAC,YAAY,CAAC,OAAO,EAAE,EAAE,CAAC,CAAC;QACjC,MAAM,CAAC,YAAY,CAAC,MAAM,EAAE,iBAAiB,CAAC,CAAC;QAE/C,oBAAoB;QACpB,MAAM,CAAC,gBAAgB,CAAC,OAAO,EAAE,GAAG,EAAE;YACpC,MAAM,GAAG,GAAG,IAAI,KAAK,CAAC,iBAAiB,GAAG,IAAI,CAAC,YAAY,CAAC,SAAS,CAAC,CAAC;YACvE,IAAI,CAAC,OAAO,CAAC,IAAI,CAAC,IAAI,CAAC,QAAQ,CAAC,OAAO,CAAC,CAAC,CAAC;YAC1C,IAAI,CAAC,OAAO,CAAC,KAAK,CAAC,GAAG,CAAC,CAAC;QAC1B,CAAC,EAAE,EAAC,OAAO,EAAE,IAAI,EAAC,CAAC,CAAC;QAEpB,iBAAiB;QACjB,MAAM,CAAC,GAAG,GAAG,IAAI,CAAC,YAAY,CAAC,SAAS,CAAC;QACzC,oCAAoC;QACpC,MAAM,IAAI,GAAG,QAAQ,CAAC,oBAAoB,CAAC,QAAQ,CAAC,CAAC,CAAC,CAAC,CAAC;QACxD,IAAI,IAAI,EAAE;YACR,IAAI,CAAC,UAAU,CAAC,YAAY,CAAC,MAAM,EAAE,IAAI,CAAC,CAAC;SAC5C;aAAM;YACL,QAAQ,CAAC,IAAI,CAAC,WAAW,CAAC,MAAM,CAAC,CAAC;SACnC;IACH,CAAC;IAED;;;OAGG;IACK,QAAQ,CAAC,MAAiC;QAChD,MAAM,WAAW,GAAgB;YAC/B,KAAK,EAAE,KAAK;YACZ,OAAO,EAAE,KAAK;YACd,KAAK,EAAE,KAAK;YACZ,KAAK,EAAE,EAAE;SACV,CAAC;QACF,MAAM,CAAC,IAAI,CAAC,WAAW,CAAC,CAAC,OAAO,CAAC,GAAG,CAAC,EAAE;YACrC,IAAI,GAAG,KAAK,OAAO,EAAE;gBACnB,IAAI,GAAG,KAAK,MAAM,EAAE;oBAClB,WAAW,CAAC,GAAG,CAAC,GAAG,IAAI,CAAC;oBACxB,WAAW,CAAC,KAAK,GAAG,GAAG,CAAC;iBACzB;qBAAM;oBACL,WAAW,CAAC,GAAG,CAAC,GAAG,KAAK,CAAC;iBAC1B;aACF;QACH,CAAC,CAAC,CAAC;QACH,OAAO,WAAW,CAAC;IACrB,CAAC;IAED;;;OAGG;IACK,oBAAoB,CAAC,OAAqB;QAChD,OAAO;YACL,SAAS,EAAE,OAAO,CAAC,aAAa,CAAC,CAAC,CAAC,GAAG,OAAO,CAAC,aAAa,YAAY,CAAC,CAAC,CAAC,0BAA0B;YACpG,cAAc,EAAE,gBAAgB;YAChC,SAAS,EAAE,IAAI;YACf,oBAAoB,EAAE,GAAG,EAAE;gBACzB,IAAI,CAAC,OAAO,CAAC,GAAG,CAAC,GAAG,EAAE;oBACpB,OAAO,CAAC,GAAG,CAAC,cAAc,CAAC,CAAC;oBAC5B,IAAI,CAAC,OAAO,CAAC,IAAI,CAAC,IAAI,CAAC,QAAQ,CAAC,OAAO,CAAC,CAAC,CAAC;oBAC1C,IAAI,OAAO,CAAC,eAAe,EAAE;wBAC3B,OAAO,CAAC,eAAe,EAAE,CAAC;qBAC3B;gBACH,CAAC,CAAC,CAAC;YACL,CAAC;SACF,CAAC;IACJ,CAAC;CACF,CAAA;;4CAnFc,MAAM,SAAC,iBAAiB;YAA0C,MAAM;;;AAV1E,gBAAgB;IAH5B,UAAU,CAAC;QACV,UAAU,EAAE,MAAM;KACnB,CAAC;IAWa,WAAA,MAAM,CAAC,iBAAiB,CAAC,CAAA;6CAAyC,MAAM;GAV1E,gBAAgB,CA6F5B;SA7FY,gBAAgB","sourcesContent":["import {Inject, Injectable, InjectionToken, NgZone} from '@angular/core';\r\nimport {BehaviorSubject} from 'rxjs';\r\nimport {OpenCVConfig, OpenCVState} from './models';\r\n\r\nexport const OpenCvConfigToken = new InjectionToken<OpenCVConfig>('OpenCV config object token');\r\n\r\n@Injectable({\r\n  providedIn: 'root'\r\n})\r\nexport class NgxOpenCVService {\r\n\r\n  cvState = new BehaviorSubject<OpenCVState>({\r\n    ready: false,\r\n    error: false,\r\n    loading: true,\r\n    state: 'loading'\r\n  });\r\n  configModule: OpenCvConfigModule;\r\n\r\n  constructor(@Inject(OpenCvConfigToken) options: OpenCVConfig, private _ngZone: NgZone) {\r\n    if (!options) {\r\n      options = {};\r\n    }\r\n    this.configModule = this.generateConfigModule(options);\r\n    this.loadOpenCv();\r\n  }\r\n\r\n  /**\r\n   * load the OpenCV script\r\n   */\r\n  loadOpenCv() {\r\n    this.cvState.next( this.newState('loading'));\r\n    // create global module variable\r\n    window['Module'] = this.configModule;\r\n\r\n    // create script element and set attributes\r\n    const script = <HTMLScriptElement> document.createElement('script');\r\n    script.setAttribute('async', '');\r\n    script.setAttribute('type', 'text/javascript');\r\n\r\n    // listen for errors\r\n    script.addEventListener('error', () => {\r\n      const err = new Error('Failed to load ' + this.configModule.scriptUrl);\r\n      this.cvState.next(this.newState('error'));\r\n      this.cvState.error(err);\r\n    }, {passive: true});\r\n\r\n    // set script url\r\n    script.src = this.configModule.scriptUrl;\r\n    // insert script as first script tag\r\n    const node = document.getElementsByTagName('script')[0];\r\n    if (node) {\r\n      node.parentNode.insertBefore(script, node);\r\n    } else {\r\n      document.head.appendChild(script);\r\n    }\r\n  }\r\n\r\n  /**\r\n   * generates a new state object\r\n   * @param change - the new state of the module\r\n   */\r\n  private newState(change: 'loading'|'ready'|'error'): OpenCVState {\r\n    const newStateObj: OpenCVState = {\r\n      ready: false,\r\n      loading: false,\r\n      error: false,\r\n      state: ''\r\n    };\r\n    Object.keys(newStateObj).forEach(key => {\r\n      if (key !== 'state') {\r\n        if (key === change) {\r\n          newStateObj[key] = true;\r\n          newStateObj.state = key;\r\n        } else {\r\n          newStateObj[key] = false;\r\n        }\r\n      }\r\n    });\r\n    return newStateObj;\r\n  }\r\n\r\n  /**\r\n   * generates a config module for the global Module object\r\n   * @param options - configuration options\r\n   */\r\n  private generateConfigModule(options: OpenCVConfig): OpenCvConfigModule {\r\n    return {\r\n      scriptUrl: options.openCVDirPath ? `${options.openCVDirPath}/opencv.js` : `/assets/opencv/opencv.js`,\r\n      wasmBinaryFile: 'opencv_js.wasm',\r\n      usingWasm: true,\r\n      onRuntimeInitialized: () => {\r\n        this._ngZone.run(() => {\r\n          console.log('openCV Ready');\r\n          this.cvState.next(this.newState('ready'));\r\n          if (options.runOnOpenCVInit) {\r\n            options.runOnOpenCVInit();\r\n          }\r\n        });\r\n      }\r\n    };\r\n  }\r\n}\r\n\r\n/**\r\n * describes the global Module object that is used to initiate OpenCV.js\r\n */\r\ninterface OpenCvConfigModule {\r\n  scriptUrl: string;\r\n  wasmBinaryFile: string;\r\n  usingWasm: boolean;\r\n  onRuntimeInitialized: Function;\r\n}\r\n\r\n"]}