xavierk
f1b7502e9d
issueAndArchive keeps an issued invoice even when rendering or archiving fails (Issued - not archived, with a Render & archive action). The export menu offers a searchable PDF or a 300 DPI image-only PDF whose metadata is the invoice number alone; flatten failures offer Retry or searchable export and never silently lower the resolution. History re-exports the original as issued by default and warns when a re-render's layout fingerprint differs. The render client gains a FIFO assemble lane that previews cannot supersede. A Diagnostics panel runs fixtures in the real worker and compares against goldens generated from Node.
58 lines
1.9 KiB
TypeScript
58 lines
1.9 KiB
TypeScript
import { flattenPages, type CanvasLike, type FlattenResult, type PdfDocLike } from "../pdf/flatten";
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/** Lets the browser paint and handle input; falls back to a timer when rAF is paused (hidden window). */
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export const yieldToBrowser = (): Promise<void> =>
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new Promise<void>((resolve) => {
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let done = false;
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const finish = () => {
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if (!done) {
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done = true;
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resolve();
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}
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};
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setTimeout(finish, 50);
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requestAnimationFrame(() => setTimeout(finish, 0));
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});
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/** JPEG bytes of a canvas via the browser's encoder. */
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export function encodeCanvasJpeg(canvas: CanvasLike, quality: number): Promise<Uint8Array> {
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return new Promise((resolve, reject) => {
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(canvas as unknown as HTMLCanvasElement).toBlob(
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(blob) => {
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if (!blob) return reject(new Error("the browser could not encode the page image (out of memory?)"));
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blob.arrayBuffer().then((buf) => resolve(new Uint8Array(buf)), reject);
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},
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"image/jpeg",
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quality,
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);
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});
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}
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export interface BrowserFlattenOptions {
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signal?: AbortSignal;
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onProgress?: (page: number, pages: number) => void;
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}
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/** Flattens PDF bytes at 300 DPI with pdf.js and a DOM canvas; opens and closes the document itself. */
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export async function flattenInBrowser(bytes: Uint8Array, opts: BrowserFlattenOptions = {}): Promise<FlattenResult> {
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const { openPdf, closePdf } = await import("./pdfjs");
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const doc = await openPdf(bytes);
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try {
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return await flattenPages({
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pdf: doc as unknown as PdfDocLike,
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createCanvas: (width, height) => {
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const canvas = document.createElement("canvas");
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canvas.width = width;
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canvas.height = height;
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return canvas as unknown as CanvasLike;
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},
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encodeJpeg: encodeCanvasJpeg,
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yieldToUi: yieldToBrowser,
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signal: opts.signal,
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onProgress: opts.onProgress,
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});
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} finally {
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await closePdf(doc).catch(() => {});
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}
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}
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