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[Editor] Add support for printing/saving newly added Stamp annotations

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In order to minimize the size the of a saved pdf, we generate only one
image and use a reference in each annotation using it.
When printing, it's slightly different since we have to render each page
independantly but we use the same image within a page.
This commit is contained in:
Calixte Denizet 2023-06-22 19:48:40 +02:00
parent ccb72073b0
commit 599b9498f2
9 changed files with 519 additions and 19 deletions
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15
src/core/worker.js
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@ -36,6 +36,7 @@ import {
} from "./core_utils.js";
import { Dict, Ref } from "./primitives.js";
import { LocalPdfManager, NetworkPdfManager } from "./pdf_manager.js";
import { AnnotationFactory } from "./annotation.js";
import { clearGlobalCaches } from "./cleanup_helper.js";
import { incrementalUpdate } from "./writer.js";
import { isNodeJS } from "../shared/is_node.js";
@ -537,12 +538,11 @@ class WorkerMessageHandler {
handler.on(
"SaveDocument",
function ({ isPureXfa, numPages, annotationStorage, filename }) {
async function ({ isPureXfa, numPages, annotationStorage, filename }) {
const promises = [
pdfManager.requestLoadedStream(),
pdfManager.ensureCatalog("acroForm"),
pdfManager.ensureCatalog("acroFormRef"),
pdfManager.ensureDoc("xref"),
pdfManager.ensureDoc("startXRef"),
];
@ -550,13 +550,21 @@ class WorkerMessageHandler {
? getNewAnnotationsMap(annotationStorage)
: null;
const xref = await pdfManager.ensureDoc("xref");
if (newAnnotationsByPage) {
const imagePromises = AnnotationFactory.generateImages(
annotationStorage.values(),
xref,
pdfManager.evaluatorOptions.isOffscreenCanvasSupported
);
for (const [pageIndex, annotations] of newAnnotationsByPage) {
promises.push(
pdfManager.getPage(pageIndex).then(page => {
const task = new WorkerTask(`Save (editor): page ${pageIndex}`);
return page
.saveNewAnnotations(handler, task, annotations)
.saveNewAnnotations(handler, task, annotations, imagePromises)
.finally(function () {
finishWorkerTask(task);
});
@ -586,7 +594,6 @@ class WorkerMessageHandler {
stream,
acroForm,
acroFormRef,
xref,
startXRef,
...refs
]) {