Nico Kutscherauer created FOP-3165:
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Summary: FOP tags Tables in PDF 1.4 style if PDF/UA-1 mode active
Key: FOP-3165
URL: https://issues.apache.org/jira/browse/FOP-3165
Project: FOP
Issue Type: Bug
Environment: Windows 10, PAC 2021 for tagging analyzes.
Reporter: Nico Kutscherauer
Attachments: table-14.jpg, table-ua.jpg, table.jpg
Hi,
this small GitHub project shows the problem:
[https://github.com/nkutsche/fop-pdf-ua-table-tagging-issue]
A
[table|https://github.com/nkutsche/fop-pdf-ua-table-tagging-issue/blob/main/table.fo]
is rendered to PDF using FOP 2.9 with three different configs. The differences
are:
[Config 1: PDF 1.5 is
requested|https://github.com/nkutsche/fop-pdf-ua-table-tagging-issue/blob/main/config/fop-config.xml].
[Config 2: PDF 1.5 is requested and PDF/UA-1 mode is
active.|https://github.com/nkutsche/fop-pdf-ua-table-tagging-issue/blob/main/config/fop-config-ua.xml]
[Config 3: PDF 1.4 is
requested.|https://github.com/nkutsche/fop-pdf-ua-table-tagging-issue/blob/main/config/fop-config14.xml]
I analyzed the result PDFs with PAC 2021 - this are the screenshots focosing
the table footer:
||Config 1: PDF 1.5||Config 2: PDF/UA-1||Config 3: PDF 1.4||
|!table.jpg|width=481,height=200!|!table-ua.jpg|width=386,height=200!|!table-14.jpg|width=468,height=200!|
You see that if the {{PDF/UA-1}} mode is *active* the tagging of {{{}TBody{}}},
{{THead}} and {{TFoot}} are lost and the {{TFoot}} row is missplaced (at least
on my point of view).
The reason for adding the PDF 1.4 version was, that PDF 1.4 knows only the tags
{{{}Table{}}}, {{{}TR{}}}, {{TH}} and {{TD}} (See [PDF 1.4
specification|https://opensource.adobe.com/dc-acrobat-sdk-docs/pdfstandards/pdfreference1.4.pdf]
Table 9.22). With PDF 1.5 {{{}TBody{}}}, {{THead}} and {{TFoot}} was
introduced (see [PDF 1.5
specification|https://opensource.adobe.com/dc-acrobat-sdk-docs/pdfstandards/pdfreference1.5_v6.pdf]
Table 10.22).
*Conclusion:* FOP tags tables in PDF 1.4 style if PDF/UA-1 mode is *active*
even if PDF 1.5 is generated. If PDF/UA-1 mode is *inactive* it tags tables in
PDF 1.5 style even if PDF 1.4 is generated.
Am I correct that this is not the desired behavior? I think we could live with
the PDF 1.4 style if the table footer wouldn't be on top of the body. On my
point of view this is also in the PDF 1.4 style wrong.
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