pdf-lib
Version:
Create and modify PDF files with JavaScript
74 lines • 2.77 kB
TypeScript
import Embeddable from "./Embeddable";
import PDFDocument from "./PDFDocument";
import { PDFPageEmbedder, PDFRef } from "../core";
/**
* Represents a PDF page that has been embedded in a [[PDFDocument]].
*/
export default class PDFEmbeddedPage implements Embeddable {
/**
* > **NOTE:** You probably don't want to call this method directly. Instead,
* > consider using the [[PDFDocument.embedPdf]] and
* > [[PDFDocument.embedPage]] methods, which will create instances of
* > [[PDFEmbeddedPage]] for you.
*
* Create an instance of [[PDFEmbeddedPage]] from an existing ref and embedder
*
* @param ref The unique reference for this embedded page.
* @param doc The document to which the embedded page will belong.
* @param embedder The embedder that will be used to embed the page.
*/
static of: (ref: PDFRef, doc: PDFDocument, embedder: PDFPageEmbedder) => PDFEmbeddedPage;
/** The unique reference assigned to this embedded page within the document. */
readonly ref: PDFRef;
/** The document to which this embedded page belongs. */
readonly doc: PDFDocument;
/** The width of this page in pixels. */
readonly width: number;
/** The height of this page in pixels. */
readonly height: number;
private alreadyEmbedded;
private readonly embedder;
private constructor();
/**
* Compute the width and height of this page after being scaled by the
* given `factor`. For example:
* ```js
* embeddedPage.width // => 500
* embeddedPage.height // => 250
*
* const scaled = embeddedPage.scale(0.5)
* scaled.width // => 250
* scaled.height // => 125
* ```
* This operation is often useful before drawing a page with
* [[PDFPage.drawPage]] to compute the `width` and `height` options.
* @param factor The factor by which this page should be scaled.
* @returns The width and height of the page after being scaled.
*/
scale(factor: number): {
width: number;
height: number;
};
/**
* Get the width and height of this page. For example:
* ```js
* const { width, height } = embeddedPage.size()
* ```
* @returns The width and height of the page.
*/
size(): {
width: number;
height: number;
};
/**
* > **NOTE:** You probably don't need to call this method directly. The
* > [[PDFDocument.save]] and [[PDFDocument.saveAsBase64]] methods will
* > automatically ensure all embeddable pages get embedded.
*
* Embed this embeddable page in its document.
*
* @returns Resolves when the embedding is complete.
*/
embed(): Promise<void>;
}
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