Journal / Cache issue

[xeladotbe]

Hi,

I'm trying to render a page twice once I've added and undoing and added again a stamp annotation.

Steps to reproduce:

• Create stamp annotation with custom image
• Render page as image (page.toPixmap)
• Undo all operations in journal
• Create stamp annotation with custom image
• Render page as image (page.toPixmap)
  The console shows some warnings/errors

I've written a simple test to reproduce the issue:

    const createAnnotation = (page: mupdf.PDFPage) => {
        const annotation = page.createAnnotation("Stamp");
        const stampImage = new mupdf.Image(
            fs.readFileSync(
                path.resolve(
                    __dirname,
                    "./resources/unterschrift-max-mustermann.png",
                ),
            ).buffer as any,
        );
        annotation.setIcon("signature");
        annotation.setStampImage(stampImage);
    };


    it("should create image from pixmap", () => {
        createAnnotation(document.loadPage(0));

        const firstCall = document
            .loadPage(0)
            .toPixmap(mupdf.Matrix.identity, mupdf.ColorSpace.DeviceBGR);

        fs.writeFileSync("./first-call.png", firstCall.asPNG());

        // remove the next two lines and the test will pass
        while (document.canUndo()) document.undo();
        createAnnotation(document.loadPage(0));

        const secondCall = document
            .loadPage(0)
            .toPixmap(mupdf.Matrix.identity, mupdf.ColorSpace.DeviceBGR);

        fs.writeFileSync("./second-call.png", secondCall.asPNG());

       // remove the expect to see the warnings/errors in the console
        expect(
            Buffer.from(
                toArrayBuffer(firstCall.asPNG().slice(0, 100)),
            ).toString("base64"),
        ).toStrictEqual(
            Buffer.from(
                toArrayBuffer(secondCall.asPNG().slice(0, 100)),
            ).toString("base64"),
        );
    });

[artifex-tor]

I cannot reproduce with that limited example: the "createAnnotation" function is not defined, and the file you used to test with is not attached, and the code you use to set up the document and enable journalling is not shown.

[xeladotbe]

Sorry @artifex-tor, I've added the missing function and the image. I used the existing journal.tests.ts file to setup the document and the journal.

[artifex-tor]

Thanks, I can reproduce the bug now.