62 lines
1.7 KiB
TypeScript
62 lines
1.7 KiB
TypeScript
import { PDFPage, PDFFont, rgb, RGB } from 'pdf-lib';
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import { PDFElement, Size } from './PDFElement.js';
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import { Margin, Padding } from './Layout.js';
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export interface TextOptions {
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font: PDFFont;
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fontSize?: number;
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color?: RGB;
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margin?: Margin,
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padding?: Padding,
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lineHeight?: number
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}
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export class Text extends PDFElement {
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private content: string;
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private font: PDFFont;
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private fontSize: number;
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private color: RGB;
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private options: TextOptions
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protected _width: number;
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protected _height: number;
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public padding: Padding
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public margin: Margin
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constructor(content: string, options: TextOptions) {
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super();
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this.content = content;
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this.font = options.font;
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this.fontSize = options.fontSize ?? 12;
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this.color = options.color ?? rgb(0, 0, 0);
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this._width = this.font.widthOfTextAtSize(content, this.fontSize);
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this._height = options.lineHeight || this.font.heightAtSize(this.fontSize);
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this.options = options;
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this.margin = this.options.margin || { top: 0, left: 0, right: 0, bottom: 0}
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this.padding = this.options.padding || { top: 0, left: 0, right: 0, bottom: 0}
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}
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addChild(...children: PDFElement[]): void {
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throw new Error("Cannot add child element to Text")
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}
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get height() {
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return this._height + this.padding.top + this.padding.bottom;
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}
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get width() {
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return this._width + this.padding.left + this.padding.right;
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}
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draw(page: PDFPage, x: number, y: number): void {
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page.drawText(this.content, {
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x: x + this.margin.left + this.padding.left,
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y: y - this.height - this.margin.top - this.padding.top,
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size: this.fontSize,
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font: this.font,
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color: this.color
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});
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}
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}
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