Christopher Thumberger created FOP-3145:
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Summary: [PATCH] Fix creating empty GAD fields when embedding GOCA
objects greater than 8192 bytes in size in AFP
Key: FOP-3145
URL: https://issues.apache.org/jira/browse/FOP-3145
Project: FOP
Issue Type: Bug
Reporter: Christopher Thumberger
Attachments: EmptyGADFields.patch, image-2023-08-23-16-51-11-519.png,
image-2023-08-23-16-53-06-714.png
When a GraphicsData object would exceed 8200 bytes in size, instead of moving
the last area of GOCA data to a new GraphicsData and continuing from there, FOP
currently moves the data into a new GraphicsData object, leaving the old one
empty. This is technically not a violation of MODCA spec, but has caused
crashes in AFP viewer software. My patch prevents GAD fields ever exceedining
8200 bytes and prevents GOCA instructions being cut up between segments.
Below is an example of the current behaviour as of FOP 2.8 visualized with
AFPExplorer and my fixed version with the same input data.
!image-2023-08-23-16-51-11-519.png!
!image-2023-08-23-16-53-06-714.png!
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