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node_modules/pdf-lib/es/api/PDFEmbeddedPage.js

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+import { __awaiter, __generator } from "tslib";
+import PDFDocument from "./PDFDocument";
+import { PDFPageEmbedder, PDFRef } from "../core";
+import { assertIs } from "../utils";
+/**
+ * Represents a PDF page that has been embedded in a [[PDFDocument]].
+ */
+var PDFEmbeddedPage = /** @class */ (function () {
+    function PDFEmbeddedPage(ref, doc, embedder) {
+        this.alreadyEmbedded = false;
+        assertIs(ref, 'ref', [[PDFRef, 'PDFRef']]);
+        assertIs(doc, 'doc', [[PDFDocument, 'PDFDocument']]);
+        assertIs(embedder, 'embedder', [[PDFPageEmbedder, 'PDFPageEmbedder']]);
+        this.ref = ref;
+        this.doc = doc;
+        this.width = embedder.width;
+        this.height = embedder.height;
+        this.embedder = embedder;
+    }
+    /**
+     * 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.
+     */
+    PDFEmbeddedPage.prototype.scale = function (factor) {
+        assertIs(factor, 'factor', ['number']);
+        return { width: this.width * factor, height: this.height * factor };
+    };
+    /**
+     * Get the width and height of this page. For example:
+     * ```js
+     * const { width, height } = embeddedPage.size()
+     * ```
+     * @returns The width and height of the page.
+     */
+    PDFEmbeddedPage.prototype.size = function () {
+        return this.scale(1);
+    };
+    /**
+     * > **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.
+     */
+    PDFEmbeddedPage.prototype.embed = function () {
+        return __awaiter(this, void 0, void 0, function () {
+            return __generator(this, function (_a) {
+                switch (_a.label) {
+                    case 0:
+                        if (!!this.alreadyEmbedded) return [3 /*break*/, 2];
+                        return [4 /*yield*/, this.embedder.embedIntoContext(this.doc.context, this.ref)];
+                    case 1:
+                        _a.sent();
+                        this.alreadyEmbedded = true;
+                        _a.label = 2;
+                    case 2: return [2 /*return*/];
+                }
+            });
+        });
+    };
+    /**
+     * > **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.
+     */
+    PDFEmbeddedPage.of = function (ref, doc, embedder) {
+        return new PDFEmbeddedPage(ref, doc, embedder);
+    };
+    return PDFEmbeddedPage;
+}());
+export default PDFEmbeddedPage;
+//# sourceMappingURL=PDFEmbeddedPage.js.map