pdf-lib
Version:
Create and modify PDF files with JavaScript
95 lines • 3.74 kB
TypeScript
import Embeddable from "./Embeddable";
import PDFDocument from "./PDFDocument";
import { CustomFontEmbedder, PDFHexString, PDFRef, StandardFontEmbedder } from "../core";
export declare type FontEmbedder = CustomFontEmbedder | StandardFontEmbedder;
/**
* Represents a font that has been embedded in a [[PDFDocument]].
*/
export default class PDFFont implements Embeddable {
/**
* > **NOTE:** You probably don't want to call this method directly. Instead,
* > consider using the [[PDFDocument.embedFont]] and
* > [[PDFDocument.embedStandardFont]] methods, which will create instances
* > of [[PDFFont]] for you.
*
* Create an instance of [[PDFFont]] from an existing ref and embedder
*
* @param ref The unique reference for this font.
* @param doc The document to which the font will belong.
* @param embedder The embedder that will be used to embed the font.
*/
static of: (ref: PDFRef, doc: PDFDocument, embedder: FontEmbedder) => PDFFont;
/** The unique reference assigned to this font within the document. */
readonly ref: PDFRef;
/** The document to which this font belongs. */
readonly doc: PDFDocument;
/** The name of this font. */
readonly name: string;
private modified;
private readonly embedder;
private constructor();
/**
* > **NOTE:** You probably don't need to call this method directly. The
* > [[PDFPage.drawText]] method will automatically encode the text it is
* > given.
*
* Encodes a string of text in this font.
*
* @param text The text to be encoded.
* @returns The encoded text as a hex string.
*/
encodeText(text: string): PDFHexString;
/**
* Measure the width of a string of text drawn in this font at a given size.
* For example:
* ```js
* const width = font.widthOfTextAtSize('Foo Bar Qux Baz', 36)
* ```
* @param text The string of text to be measured.
* @param size The font size to be used for this measurement.
* @returns The width of the string of text when drawn in this font at the
* given size.
*/
widthOfTextAtSize(text: string, size: number): number;
/**
* Measure the height of this font at a given size. For example:
* ```js
* const height = font.heightAtSize(24)
* ```
*
* The `options.descender` value controls whether or not the font's
* descender is included in the height calculation.
*
* @param size The font size to be used for this measurement.
* @param options The options to be used when computing this measurement.
* @returns The height of this font at the given size.
*/
heightAtSize(size: number, options?: {
descender?: boolean;
}): number;
/**
* Compute the font size at which this font is a given height. For example:
* ```js
* const fontSize = font.sizeAtHeight(12)
* ```
* @param height The height to be used for this calculation.
* @returns The font size at which this font is the given height.
*/
sizeAtHeight(height: number): number;
/**
* Get the set of unicode code points that can be represented by this font.
* @returns The set of unicode code points supported by this font.
*/
getCharacterSet(): number[];
/**
* > **NOTE:** You probably don't need to call this method directly. The
* > [[PDFDocument.save]] and [[PDFDocument.saveAsBase64]] methods will
* > automatically ensure all fonts get embedded.
*
* Embed this font in its document.
*
* @returns Resolves when the embedding is complete.
*/
embed(): Promise<void>;
}
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