e1acf6e9d6
Updates Angular to version 9.1 Updates most-to-all npm components Removes deprecated components and npm commands Updates travis node version Adjust the whole code base to angular 9 standard Increase TypeScipt version to 3.8
817 lines
26 KiB
TypeScript
817 lines
26 KiB
TypeScript
import { HttpHeaders } from '@angular/common/http';
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import { Injectable } from '@angular/core';
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import { MatSnackBar } from '@angular/material/snack-bar';
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import { TranslateService } from '@ngx-translate/core';
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import { saveAs } from 'file-saver';
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import { ProgressSnackBarComponent } from 'app/shared/components/progress-snack-bar/progress-snack-bar.component';
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import { MotionExportInfo } from 'app/site/motions/services/motion-export.service';
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import { ConfigService } from '../ui-services/config.service';
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import { HttpService } from '../core-services/http.service';
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import { ProgressService } from '../ui-services/progress.service';
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/**
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* Enumeration to define possible values for the styling.
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*/
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export enum StyleType {
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DEFAULT = 'tocEntry',
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SUBTITLE = 'subtitle',
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SUB_ENTRY = 'tocSubEntry',
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CATEGORY_SECTION = 'tocCategorySection'
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}
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/**
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* Enumeration to describe the type of borders.
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*/
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export enum BorderType {
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DEFAULT = 'noBorders',
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LIGHT_HORIZONTAL_LINES = 'lightHorizontalLines',
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HEADER_ONLY = 'headerLineOnly'
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}
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/**
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* Custom PDF error class to handle errors in a safer way
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*/
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export class PdfError extends Error {
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public __proto__: PdfError;
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public constructor(public message: string) {
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super(message);
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const trueProto = new.target.prototype;
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this.__proto__ = trueProto;
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}
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}
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/**
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* Provides the general document structure for PDF documents, such as page margins, header, footer and styles.
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* Also provides general purpose open and download functions.
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*
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* Use a local pdf service (i.e. MotionPdfService) to get the document definition for the content and use this service to
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* open or download the pdf document
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*
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* @example
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* ```ts
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* const motionContent = this.motionPdfService.motionToDocDef(this.motion);
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* this.pdfDocumentService.download(motionContent, 'test.pdf');
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* ```
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*/
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@Injectable({
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providedIn: 'root'
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})
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export class PdfDocumentService {
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/**
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* A list of all images to add to the virtual file system.
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* May still be filling at header and footer creation
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*/
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private imageUrls: string[] = [];
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private pdfWorker: Worker;
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/**
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* Constructor
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*
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* @param translate translations
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* @param configService read config values
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* @param mediaManageService to read out font files as media data
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*/
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public constructor(
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private translate: TranslateService,
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private configService: ConfigService,
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private httpService: HttpService,
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private matSnackBar: MatSnackBar,
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private progressService: ProgressService
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) {}
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/**
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* Define the pdfmake virtual file system, adding the fonts
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*
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* @returns the vfs-object
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*/
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private async initVfs(): Promise<object> {
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const fontPathList: string[] = Array.from(
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// create a list without redundancies
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new Set(
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this.configService
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.instant<string[]>('fonts_available')
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.map(available => this.configService.instant<any>(available))
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.map(font => font.path || `/${font.default}`)
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)
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);
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const promises = fontPathList.map(fontPath => {
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return this.convertUrlToBase64(fontPath).then(base64 => {
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return {
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[fontPath.split('/').pop()]: base64
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};
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});
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});
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const binaryDataUrls = await Promise.all(promises);
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let vfs = {};
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binaryDataUrls.map(entry => {
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vfs = {
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...vfs,
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...entry
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};
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});
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return vfs;
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}
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/**
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* Retrieves a binary file from the url and returns a base64 value
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*
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* @param url file url
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* @returns a promise with a base64 string
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*/
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private async convertUrlToBase64(url: string): Promise<string> {
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return new Promise<string>((resolve, reject) => {
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const headers = new HttpHeaders();
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this.httpService.get<Blob>(url, {}, {}, headers, 'blob').then(file => {
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const reader = new FileReader();
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reader.readAsDataURL(file);
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reader.onload = () => {
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const resultStr: string = reader.result as string;
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resolve(resultStr.split(',')[1]);
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};
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reader.onerror = error => {
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reject(error);
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};
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});
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});
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}
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/**
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* Returns the name of a font from the value of the given
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* config variable.
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*
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* @param fontType the config variable of the font (font_regular, font_italic)
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* @returns the name of the selected font
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*/
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private getFontName(fontType: string): string {
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const font = this.configService.instant<any>(fontType);
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return (font.path || `/${font.default}`).split('/').pop();
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}
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/**
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* Overall document definition and styles for the most PDF documents
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*
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* @param documentContent the content of the pdf as object
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* @param metadata
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* @param imageUrls Array of optional images (url, placeholder) to be inserted
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* @param customMargins optionally overrides the margins
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* @param landscape optional landscape page orientation instead of default portrait
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* @returns the pdf document definition ready to export
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*/
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private async getStandardPaper(
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documentContent: object,
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metadata?: object,
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exportInfo?: MotionExportInfo,
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imageUrls?: string[],
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customMargins?: [number, number, number, number],
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landscape?: boolean
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): Promise<object> {
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this.imageUrls = imageUrls ? imageUrls : [];
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const pageSize = this.configService.instant('general_export_pdf_pagesize');
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const defaultMargins = pageSize === 'A5' ? [45, 30, 45, 45] : [75, 90, 75, 75];
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const result = {
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pageSize: pageSize || 'A4',
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pageOrientation: landscape ? 'landscape' : 'portrait',
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pageMargins: customMargins || defaultMargins,
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defaultStyle: {
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font: 'PdfFont',
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fontSize: this.configService.instant('general_export_pdf_fontsize')
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},
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header: this.getHeader(customMargins ? [customMargins[0], customMargins[2]] : null),
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// real footer gets created in the worker
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tmpfooter: this.getFooter(customMargins ? [customMargins[0], customMargins[2]] : null, exportInfo),
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info: metadata,
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content: documentContent,
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styles: this.getStandardPaperStyles()
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};
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return result;
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}
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/**
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* Overall document definition and styles for blank PDF documents
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* (e.g. ballots)
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*
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* @param documentContent the content of the pdf as object
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* @param imageUrl an optional image to insert into the ballot
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* @returns the pdf document definition ready to export
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*/
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private async getBallotPaper(documentContent: object, imageUrl?: string): Promise<object> {
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this.imageUrls = imageUrl ? [imageUrl] : [];
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const result = {
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pageSize: 'A4',
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pageMargins: [0, 0, 0, 0],
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defaultStyle: {
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font: 'PdfFont',
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fontSize: 10
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},
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content: documentContent,
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styles: this.getBlankPaperStyles()
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};
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return result;
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}
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/**
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* Get pdfFonts from storage
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*/
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private getPdfFonts(): object {
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return {
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normal: this.getFontName('font_regular'),
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bold: this.getFontName('font_bold'),
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italics: this.getFontName('font_italic'),
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bolditalics: this.getFontName('font_bold_italic')
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};
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}
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/**
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* Creates the header doc definition for normal PDF documents
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*
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* @param lrMargin optional margin overrides
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* @returns an object that contains the necessary header definition
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*/
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private getHeader(lrMargin?: [number, number]): object {
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// check for the required logos
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let logoHeaderLeftUrl = this.configService.instant<any>('logo_pdf_header_L').path;
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let logoHeaderRightUrl = this.configService.instant<any>('logo_pdf_header_R').path;
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let text;
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const columns = [];
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// add the left logo to the header column
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if (logoHeaderLeftUrl) {
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if (logoHeaderLeftUrl.indexOf('/') === 0) {
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logoHeaderLeftUrl = logoHeaderLeftUrl.substr(1); // remove trailing /
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}
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columns.push({
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image: logoHeaderLeftUrl,
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fit: [180, 40],
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width: '20%'
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});
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this.imageUrls.push(logoHeaderLeftUrl);
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}
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// add the header text if no logo on the right was specified
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if (logoHeaderLeftUrl && logoHeaderRightUrl) {
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text = '';
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} else {
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const general_event_name = this.configService.instant<string>('general_event_name');
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const general_event_description = this.configService.instant<string>('general_event_description');
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const line1 = [
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this.translate.instant(general_event_name),
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this.translate.instant(general_event_description)
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]
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.filter(Boolean)
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.join(' – ');
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const line2 = [
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this.configService.instant('general_event_location'),
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this.configService.instant('general_event_date')
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]
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.filter(Boolean)
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.join(', ');
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text = [line1, line2].join('\n');
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}
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columns.push({
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text: text,
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style: 'headerText',
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alignment: logoHeaderRightUrl ? 'left' : 'right'
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});
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// add the logo to the right
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if (logoHeaderRightUrl) {
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if (logoHeaderRightUrl.indexOf('/') === 0) {
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logoHeaderRightUrl = logoHeaderRightUrl.substr(1); // remove trailing /
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}
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columns.push({
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image: logoHeaderRightUrl,
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fit: [180, 40],
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alignment: 'right',
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width: '20%'
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});
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this.imageUrls.push(logoHeaderRightUrl);
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}
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const margin = [lrMargin ? lrMargin[0] : 75, 30, lrMargin ? lrMargin[0] : 75, 10];
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// pdfmake order: [left, top, right, bottom]
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return {
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color: '#555',
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fontSize: 9,
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margin: margin,
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columns: columns,
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columnGap: 10
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};
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}
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/**
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* Creates the footer doc definition for normal PDF documents.
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* Adds page numbers into the footer
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*
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* @param currentPage holds the number of the current page
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* @param pageCount holds the page count
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* @param lrMargin optionally overriding the margins
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* @returns the footer doc definition
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*/
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private getFooter(lrMargin?: [number, number], exportInfo?: MotionExportInfo): object {
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const columns = [];
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const showPageNr = exportInfo && exportInfo.pdfOptions ? exportInfo.pdfOptions.includes('page') : true;
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const showDate = exportInfo && exportInfo.pdfOptions ? exportInfo.pdfOptions.includes('date') : false;
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let logoContainerWidth: string;
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let pageNumberPosition: string;
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let logoContainerSize: number[];
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const logoFooterLeftUrl = this.configService.instant<any>('logo_pdf_footer_L').path;
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const logoFooterRightUrl = this.configService.instant<any>('logo_pdf_footer_R').path;
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let footerPageNumber = '';
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if (showPageNr) {
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// footerPageNumber += `${currentPage} / ${pageCount}`;
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// replace with `${currentPage} / ${pageCount}` in worker
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footerPageNumber += `%PAGENR%`;
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}
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let footerDate = {};
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if (showDate) {
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footerDate = {
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text: `${this.translate.instant('As of')}: ${new Date().toLocaleDateString(
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this.translate.currentLang
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)}`,
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fontSize: 6
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};
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}
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// if there is a single logo, give it a lot of space
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if (logoFooterLeftUrl && logoFooterRightUrl) {
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logoContainerWidth = '20%';
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logoContainerSize = [180, 40];
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} else {
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logoContainerWidth = '80%';
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logoContainerSize = [400, 50];
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}
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// the position of the page number depends on the logos
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if (logoFooterLeftUrl && logoFooterRightUrl) {
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pageNumberPosition = 'center';
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} else if (logoFooterLeftUrl && !logoFooterRightUrl) {
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pageNumberPosition = 'right';
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} else if (logoFooterRightUrl && !logoFooterLeftUrl) {
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pageNumberPosition = 'left';
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} else {
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pageNumberPosition = this.configService.instant('general_export_pdf_pagenumber_alignment');
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}
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// add the left footer logo, if any
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if (logoFooterLeftUrl) {
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columns.push({
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image: logoFooterLeftUrl,
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fit: logoContainerSize,
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width: logoContainerWidth,
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alignment: 'left'
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});
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this.imageUrls.push(logoFooterLeftUrl);
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}
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// add the page number
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columns.push({
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stack: [footerPageNumber, footerDate],
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style: 'footerPageNumber',
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alignment: pageNumberPosition
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});
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// add the right footer logo, if any
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if (logoFooterRightUrl) {
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columns.push({
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image: logoFooterRightUrl,
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fit: logoContainerSize,
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width: logoContainerWidth,
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alignment: 'right'
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});
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this.imageUrls.push(logoFooterRightUrl);
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}
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const margin = [lrMargin ? lrMargin[0] : 75, 0, lrMargin ? lrMargin[0] : 75, 10];
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return {
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margin: margin,
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columns: columns,
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columnGap: 10
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};
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}
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/**
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* Shows the progress bar earlier
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*/
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private showProgress(): void {
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const progressBarRef = this.matSnackBar.openFromComponent(ProgressSnackBarComponent, {
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duration: 0
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});
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// Listen to clicks on the cancel button
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progressBarRef.onAction().subscribe(() => {
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this.cancelPdfCreation();
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});
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this.progressService.message = this.translate.instant('Creating PDF file ...');
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this.progressService.progressMode = 'determinate';
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}
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/**
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* Downloads a pdf with the standard page definitions.
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*
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* @param docDefinition the structure of the PDF document
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* @param filename the name of the file to use
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* @param metadata
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*/
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public download(docDefinition: object, filename: string, metadata?: object, exportInfo?: MotionExportInfo): void {
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this.showProgress();
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this.getStandardPaper(docDefinition, metadata, exportInfo).then(doc => {
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this.createPdf(doc, filename);
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});
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}
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/**
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* Downloads a pdf in landscape orientation
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*
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* @param docDefinition the structure of the PDF document
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* @param filename the name of the file to use
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* @param metadata
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*/
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public downloadLandscape(docDefinition: object, filename: string, metadata?: object): void {
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this.showProgress();
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this.getStandardPaper(docDefinition, metadata, null, null, [50, 80, 50, 75], true).then(doc => {
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this.createPdf(doc, filename);
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});
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}
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/**
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* Downloads a pdf with the ballot papet page definitions.
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*
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* @param docDefinition the structure of the PDF document
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* @param filename the name of the file to use
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* @param logo (optional) url of a logo to be placed as ballot logo
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*/
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public downloadWithBallotPaper(docDefinition: object, filename: string, logo?: string): void {
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this.showProgress();
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this.getBallotPaper(docDefinition, logo).then(doc => {
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this.createPdf(doc, filename);
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});
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}
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/**
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* Triggers the actual page creation and saving.
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*
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* @param doc the finished layout
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* @param filetitle the filename (without extension) to save as
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*/
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private async createPdf(doc: object, filetitle: string): Promise<void> {
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const filename = `${filetitle}.pdf`;
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const fonts = this.getPdfFonts();
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const vfs = await this.initVfs();
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await this.loadAllImages(vfs);
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const isIE = /msie\s|trident\//i.test(window.navigator.userAgent);
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if (typeof Worker !== 'undefined' && !isIE) {
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this.pdfWorker = new Worker('./pdf-worker.worker', {
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type: 'module'
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});
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// the result of the worker
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this.pdfWorker.onmessage = ({ data }) => {
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// if the worker returns a numbers, is always the progress
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if (typeof data === 'number') {
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// update progress
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const progress = Math.ceil(data * 100);
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this.progressService.progressAmount = progress;
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}
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// if the worker returns an object, it's always the document
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if (typeof data === 'object') {
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this.matSnackBar.dismiss();
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saveAs(data, filename, { autoBOM: true });
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this.pdfWorker = null;
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}
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};
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this.pdfWorker.postMessage({
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doc: JSON.parse(JSON.stringify(doc)),
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fonts: fonts,
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vfs: vfs
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});
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} else {
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this.matSnackBar.dismiss();
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this.matSnackBar.open(this.translate.instant('Cannot create PDF files on this browser.'), '', {
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duration: 0
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});
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}
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}
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/**
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* Cancel the pdf generation
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*/
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private cancelPdfCreation(): void {
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if (this.pdfWorker) {
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this.pdfWorker.terminate();
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this.pdfWorker = null;
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}
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}
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/**
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* Definition of styles for standard papers
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*
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* @returns an object that contains all pdf styles
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*/
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private getStandardPaperStyles(): object {
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const pageSize = this.configService.instant('general_export_pdf_pagesize');
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return {
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title: {
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fontSize: pageSize === 'A5' ? 14 : 16,
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margin: [0, 0, 0, 20],
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bold: true
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},
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subtitle: {
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fontSize: 9,
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margin: [0, -20, 0, 20],
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color: 'grey'
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},
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preamble: {
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margin: [0, 0, 0, 10]
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},
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headerText: {
|
||
fontSize: 10,
|
||
margin: [0, 10, 0, 0]
|
||
},
|
||
footerPageNumber: {
|
||
fontSize: 8,
|
||
margin: [0, 15, 0, 0],
|
||
color: '#555'
|
||
},
|
||
boldText: {
|
||
bold: true
|
||
},
|
||
smallText: {
|
||
fontSize: 8
|
||
},
|
||
heading2: {
|
||
fontSize: pageSize === 'A5' ? 12 : 14,
|
||
margin: [0, 0, 0, 10],
|
||
bold: true
|
||
},
|
||
heading3: {
|
||
fontSize: pageSize === 'A5' ? 10 : 12,
|
||
margin: [0, 10, 0, 0],
|
||
bold: true
|
||
},
|
||
userDataHeading: {
|
||
fontSize: 14,
|
||
margin: [0, 10],
|
||
bold: true
|
||
},
|
||
userDataTopic: {
|
||
fontSize: 12,
|
||
margin: [0, 5]
|
||
},
|
||
userDataValue: {
|
||
fontSize: 12,
|
||
margin: [15, 5]
|
||
},
|
||
tocEntry: {
|
||
fontSize: pageSize === 'A5' ? 10 : 11,
|
||
margin: [0, 0, 0, 0],
|
||
bold: false
|
||
},
|
||
tocHeaderRow: {
|
||
fontSize: 7
|
||
},
|
||
tocSubEntry: {
|
||
fontSize: pageSize === 'A5' ? 9 : 10,
|
||
color: '#404040'
|
||
},
|
||
tocCategoryEntry: {
|
||
fontSize: pageSize === 'A5' ? 10 : 11,
|
||
margin: [10, 0, 0, 0],
|
||
bold: false
|
||
},
|
||
tocCategoryTitle: {
|
||
fontSize: pageSize === 'A5' ? 10 : 11,
|
||
margin: [0, 0, 0, 4],
|
||
bold: true
|
||
},
|
||
tocSubcategoryTitle: {
|
||
fontSize: pageSize === 'A5' ? 9 : 10,
|
||
margin: [0, 0, 0, 4],
|
||
bold: true
|
||
},
|
||
tocCategorySection: {
|
||
margin: [0, 0, 0, 10]
|
||
},
|
||
userDataTitle: {
|
||
fontSize: 26,
|
||
margin: [0, 0, 0, 0],
|
||
bold: true
|
||
},
|
||
tableHeader: {
|
||
bold: true,
|
||
fillColor: 'white'
|
||
},
|
||
listParent: {
|
||
fontSize: 14,
|
||
margin: [0, 5]
|
||
},
|
||
listChild: {
|
||
fontSize: 12,
|
||
margin: [0, 5]
|
||
},
|
||
textItem: {
|
||
fontSize: 11,
|
||
margin: [0, 7]
|
||
}
|
||
};
|
||
}
|
||
|
||
/**
|
||
* Definition of styles for ballot papers
|
||
*
|
||
* @returns an object that contains a limited set of pdf styles
|
||
* used for ballots
|
||
*/
|
||
private getBlankPaperStyles(): object {
|
||
return {
|
||
title: {
|
||
fontSize: 14,
|
||
bold: true,
|
||
margin: [30, 30, 0, 0]
|
||
},
|
||
description: {
|
||
fontSize: 11,
|
||
margin: [30, 0, 0, 0]
|
||
}
|
||
};
|
||
}
|
||
|
||
/**
|
||
* Triggers the addition of all images found during creation(including header and footer)
|
||
* to the vfs.
|
||
*/
|
||
private async loadAllImages(vfs: object): Promise<void> {
|
||
const promises = this.imageUrls.map(image => {
|
||
return this.addImageToVfS(image, vfs);
|
||
});
|
||
await Promise.all(promises);
|
||
}
|
||
|
||
/**
|
||
* Creates an image in the pdfMake virtual file system, if it doesn't yet exist there
|
||
*
|
||
* @param url
|
||
*/
|
||
private async addImageToVfS(url: string, vfs: object): Promise<void> {
|
||
if (url.indexOf('/') === 0) {
|
||
url = url.substr(1);
|
||
}
|
||
|
||
if (!vfs[url]) {
|
||
const base64 = await this.convertUrlToBase64(url);
|
||
vfs[url] = base64;
|
||
}
|
||
}
|
||
|
||
/**
|
||
* Creates the title for the motion list as pdfmake doc definition
|
||
*
|
||
* @returns The motion list title for the PDF document
|
||
*/
|
||
public createTitle(configVariable: string): object {
|
||
const titleText = this.translate.instant(this.configService.instant<string>(configVariable));
|
||
|
||
return {
|
||
text: titleText,
|
||
style: 'title'
|
||
};
|
||
}
|
||
|
||
/**
|
||
* Creates the preamble for the motion list as pdfmake doc definition
|
||
*
|
||
* @returns The motion list preamble for the PDF document
|
||
*/
|
||
public createPreamble(configVariable: string): object {
|
||
const preambleText = this.configService.instant<string>(configVariable);
|
||
|
||
if (preambleText) {
|
||
return {
|
||
text: preambleText,
|
||
style: 'preamble'
|
||
};
|
||
} else {
|
||
return {};
|
||
}
|
||
}
|
||
|
||
public getPageBreak(): Object {
|
||
return {
|
||
text: '',
|
||
pageBreak: 'after'
|
||
};
|
||
}
|
||
|
||
public getSpacer(): Object {
|
||
return {
|
||
text: '',
|
||
margin: [0, 10]
|
||
};
|
||
}
|
||
|
||
/**
|
||
* Generates the table definition for the TOC
|
||
*
|
||
* @param tocBody the body of the table
|
||
* @returns The table of contents as doc definition
|
||
*/
|
||
public createTocTableDef(
|
||
tocBody: object[],
|
||
style: StyleType = StyleType.DEFAULT,
|
||
borderStyle: BorderType = BorderType.DEFAULT,
|
||
...header: object[]
|
||
): object {
|
||
return {
|
||
table: {
|
||
headerRows: header[0] ? header.length : 0,
|
||
keepWithHeaderRows: header[0] ? header.length : 0,
|
||
dontBreakRows: true,
|
||
widths: ['auto', '*', 'auto'],
|
||
body: header[0] ? [...header, ...tocBody] : tocBody
|
||
},
|
||
layout: borderStyle,
|
||
style: style
|
||
};
|
||
}
|
||
|
||
/**
|
||
* Function, that creates a line for the 'Table of contents'
|
||
*
|
||
* @param identifier The identifier/prefix for the line
|
||
* @param title The name of the line
|
||
* @param pageReference Defaults to the page, where the object begins
|
||
* @param style Optional style. Defaults to `'tocEntry'`
|
||
*
|
||
* @returns A line for the toc
|
||
*/
|
||
public createTocLine(
|
||
identifier: string,
|
||
title: string,
|
||
pageReference: string,
|
||
style: StyleType = StyleType.DEFAULT,
|
||
...subTitle: object[]
|
||
): Object[] {
|
||
return [
|
||
{
|
||
text: identifier,
|
||
style: style
|
||
},
|
||
{
|
||
text: [title, ...subTitle],
|
||
style: 'tocEntry'
|
||
},
|
||
{
|
||
pageReference: pageReference,
|
||
style: 'tocEntry',
|
||
alignment: 'right'
|
||
}
|
||
];
|
||
}
|
||
|
||
/**
|
||
* Function to create an inline line in the toc.
|
||
*
|
||
* @param text The text for the line.
|
||
* @param bold Optional boolean, if the text should be bold - defaults to `false`.
|
||
*
|
||
* @returns {Object} An object for `DocDefinition` for `pdf-make`.
|
||
*/
|
||
public createTocLineInline(text: string, italics: boolean = false): Object {
|
||
return {
|
||
text: '\n' + text,
|
||
style: StyleType.SUB_ENTRY,
|
||
italics: italics
|
||
};
|
||
}
|
||
|
||
/**
|
||
* Draw a circle on its position on the paper
|
||
*
|
||
* @param y vertical offset
|
||
* @param size the size of the circle
|
||
* @returns an array containing one circle definition for pdfMake
|
||
*/
|
||
public drawCircle(y: number, size: number): object[] {
|
||
return [
|
||
{
|
||
type: 'ellipse',
|
||
x: 0,
|
||
y: y,
|
||
lineColor: 'black',
|
||
r1: size,
|
||
r2: size
|
||
}
|
||
];
|
||
}
|
||
}
|