[PDFBOX-4636] "There has been a widget with a missing page reference" and non widget annotation gets flattened

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.0.16
• Fix Version/s: 2.0.17, 3.0.0 PDFBox
• Component/s: AcroForm
• External issue URL: https://github.com/TomRoush/PdfBox-Android/issues/197
• Assignee: Tilman Hausherr
• Reporter: Tilman Hausherr
• Created: 26/Aug/19 16:44
• Updated: 30/Jun/20 06:13
• Resolved: 29/Aug/19 16:50

Description

I get this when attempting to flatten the attached file (which is an "improved" version of the file from the linked issue)

26.08.2019 18:41:00.354 WARN [main] org.apache.pdfbox.pdmodel.interactive.form.PDAcroForm:853 - There has been a widget with a missing page reference. Please report to the PDFBox project

 The intention is to "preserve all non widget annotations". This code reproduces the problem:

PDDocument doc = PDDocument.load(new File("PDFBOX-4636.pdf"));
List<PDAnnotation> annotations = doc.getPage(0).getAnnotations();
PDColor red = new PDColor(new float[] { 1, 0, 0 }, PDDeviceRGB.INSTANCE);
PDColor blue = new PDColor(new float[] { 0, 0, 1 }, PDDeviceRGB.INSTANCE);
PDAnnotationCircle circleAnnotation = new PDAnnotationCircle();
circleAnnotation.setContents("Circle Annotation");
circleAnnotation.setInteriorColor(red);
circleAnnotation.setColor(blue);
circleAnnotation.setRectangle(new PDRectangle(100, 700, 100, 50));
circleAnnotation.setPage(doc.getPage(0));
circleAnnotation.constructAppearances();
annotations.add(circleAnnotation);
doc.save("PDFBOX-4636-annotated.pdf");

doc.getDocumentCatalog().getAcroForm().flatten();
doc.save("PDFBOX-4636-flattened-bad.pdf");
doc.close();

doc = PDDocument.load(new File("PDFBOX-4636-annotatedAP.pdf")); // PDFBOX-4636-annotated.pdf opened with Adobe and saved
doc.getDocumentCatalog().getAcroForm().flatten();
doc.save("PDFBOX-4636-flattened-good.pdf");
doc.close();

what should have happened: result file PDFBOX-4636-flattened-good.pdf has 1 annotation.

what happened instead: result file has PDFBOX-4636-flattened-bad.pdf no annotation, because the circle annotation has been flattened as well.

Issue Links

• relates to: PDFBOX-3301 NPE in PDAcroForm.flatten if a widget doesn't contain a /P entry