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Add the possibility to compress/decompress the signature data in order to store them in the logins storage in Firefox (bug 1946171)

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This commit is contained in:
Calixte Denizet 2025-02-05 19:34:11 +01:00
parent b4a6b1ba0b
commit 6b95095e14
15 changed files with 459 additions and 17 deletions
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48
test/unit/editor_spec.js
View file

@ -14,6 +14,7 @@
*/
import { CommandManager } from "../../src/display/editor/tools.js";
import { SignatureExtractor } from "../../src/display/editor/drawers/signaturedraw.js";
describe("editor", function () {
describe("Command Manager", function () {
@ -90,4 +91,51 @@ describe("editor", function () {
manager.add({ ...makeDoUndo(5), mustExec: true });
expect(x).toEqual(11);
});
it("should check signature compression/decompression", async () => {
let gen = n => new Float32Array(crypto.getRandomValues(new Uint16Array(n)));
let outlines = [102, 28, 254, 4536, 10, 14532, 512].map(gen);
const signature = {
outlines,
areContours: false,
thickness: 1,
width: 123,
height: 456,
};
let compressed = await SignatureExtractor.compressSignature(signature);
let decompressed = await SignatureExtractor.decompressSignature(compressed);
expect(decompressed).toEqual(signature);
signature.thickness = 2;
compressed = await SignatureExtractor.compressSignature(signature);
decompressed = await SignatureExtractor.decompressSignature(compressed);
expect(decompressed).toEqual(signature);
signature.areContours = true;
compressed = await SignatureExtractor.compressSignature(signature);
decompressed = await SignatureExtractor.decompressSignature(compressed);
expect(decompressed).toEqual(signature);
// Numbers are small enough to be compressed with Uint8Array.
gen = n =>
new Float32Array(
crypto.getRandomValues(new Uint8Array(n)).map(x => x / 10)
);
outlines = [100, 200, 300, 10, 80].map(gen);
signature.outlines = outlines;
compressed = await SignatureExtractor.compressSignature(signature);
decompressed = await SignatureExtractor.decompressSignature(compressed);
expect(decompressed).toEqual(signature);
// Numbers are large enough to be compressed with Uint16Array.
gen = n =>
new Float32Array(
crypto.getRandomValues(new Uint16Array(n)).map(x => x / 10)
);
outlines = [100, 200, 300, 10, 80].map(gen);
signature.outlines = outlines;
compressed = await SignatureExtractor.compressSignature(signature);
decompressed = await SignatureExtractor.decompressSignature(compressed);
expect(decompressed).toEqual(signature);
});
});

4
test/unit/pdf_spec.js
View file

@ -22,6 +22,7 @@ import {
AnnotationType,
createValidAbsoluteUrl,
FeatureTest,
getUuid,
ImageKind,
InvalidPDFException,
normalizeUnicode,
@ -63,6 +64,7 @@ import { ColorPicker } from "../../src/display/editor/color_picker.js";
import { DOMSVGFactory } from "../../src/display/svg_factory.js";
import { DrawLayer } from "../../src/display/draw_layer.js";
import { GlobalWorkerOptions } from "../../src/display/worker_options.js";
import { SignatureExtractor } from "../../src/display/editor/drawers/signaturedraw.js";
import { TextLayer } from "../../src/display/text_layer.js";
import { TouchManager } from "../../src/display/touch_manager.js";
import { XfaLayer } from "../../src/display/xfa_layer.js";
@ -87,6 +89,7 @@ const expectedAPI = Object.freeze({
getDocument,
getFilenameFromUrl,
getPdfFilenameFromUrl,
getUuid,
getXfaPageViewport,
GlobalWorkerOptions,
ImageKind,
@ -107,6 +110,7 @@ const expectedAPI = Object.freeze({
ResponseException,
setLayerDimensions,
shadow,
SignatureExtractor,
stopEvent,
SupportedImageMimeTypes,
TextLayer,