[PDFBOX-3408] Correct validation of Widget Annotations for PDF/A-1

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 1.8.12, 2.0.2, 2.0.3, 3.0.0 PDFBox
• Fix Version/s: 2.0.3, 3.0.0 PDFBox
• Component/s: Preflight
• Assignee: Tilman Hausherr
• Reporter: Maruan Sahyoun
• Created: 01/Jul/16 15:28
• Updated: 25/Mar/17 18:13
• Resolved: 04/Jul/16 21:22

Description

The TECHNICAL CORRIGENDUM 2 for ISO 19005-1:2005 (PDF/A-1) added a clause for Widget Annotations:

For all annotation dictionaries containing an AP key, the appearance dictionary that it defines as its value shall contain only the N key. If an annotation dictionary’s Subtype key has a value of Widget and its FT key has a value of Btn, the value of the N key shall be an appearance subdictionary; otherwise the value of the N key shall be an appearance stream.

We currently (only) validate with the original clause of ISO 19005-1:2005 (PDF/A-1) which has

If an annotation dictionary contains the AP key, the appearance dictionary that it defines as its value shall contain only the N key, whose value shall be a stream defining the appearance of the annotation.

Previous versions of PDFBox report an error for such a widget

5.3.1 : Invalid field value in an annotation definition, The N Appearance must be a Stream

Issue Links

• links to: Create test case for Btn widgets appearance subdictionary