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https://issues.apache.org/jira/browse/PDFBOX-2423?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14234520#comment-14234520
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Tilman Hausherr commented on PDFBOX-2423:
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As I said, many regressions are now solved, but not all. Here some that had a
better rendering in the past:
PDFBOX-994.pdf
PDFBOX-1058.pdf (the xerox ball on p1 and 4)
PDFBOX-1442.pdf, see there at the end for the problems that existed in the past
re: getting the correct matrix
gs-bugzilla694585.pdf, stuff at wrong position, e.g. at lower left
gs-bugzilla692503.ai, neck pattern has wrong orientation
gs-bugzilla691715.pdf, red lines have wrong orientation
gs-bugzilla690467.pdf, only the green rectangle is displayed
PDFBOX-994.pdf
files with a step of 32767
PDFBOX-1451.pdf shadow missing
PDFBOX-1466.pdf
PDFBOX-1577.pdf shadow missing
PDFBOX-2098-asyTUG.pdf shading missing p6
PDFBOX-2103.pdf shadow missing
This isn't the full list but others are probably duplicates of these.
> Page tree handling needs rewriting
> ----------------------------------
>
> Key: PDFBOX-2423
> URL: https://issues.apache.org/jira/browse/PDFBOX-2423
> Project: PDFBox
> Issue Type: Improvement
> Components: PDModel
> Affects Versions: 1.8.7, 2.0.0
> Reporter: John Hewson
> Assignee: John Hewson
> Priority: Blocker
> Fix For: 2.0.0
>
> Attachments: 025957.pdf, 26101_Colors.ai-1.png,
> 26101_Colors.ai-1.png-diff.png, Basiswissen-Vorschriften.pdf-3.png,
> Basiswissen-Vorschriften.pdf-3.png-diff.png,
> Basiswissen-Vorschriften.pdf-4.png,
> Basiswissen-Vorschriften.pdf-4.png-diff.png, PDFBOX-1058.pdf-1.png,
> PDFBOX-1058.pdf-1.png-diff.png, PDFBOX-1058.pdf-4.png,
> PDFBOX-1058.pdf-4.png-diff.png, PDFBOX-1094-tiling_pattern.pdf,
> PDFBOX-1711-cmyk.pdf-1.png, PDFBOX-1711-cmyk.pdf-1.png-diff.png,
> PDFBOX-1794-vattenfall.pdf-1.png, PDFBOX-1794-vattenfall.pdf-1.png-diff.png,
> PDFBOX-1917.pdf-1.png, PDFBOX-1917.pdf-1.png-diff.png,
> asy-functionshading.pdf-1.png, asy-functionshading.pdf-1.png-diff.png,
> bugzilla869140.pdf, example_026.pdf-1.png, gs-bugzilla694385.pdf,
> jagpdf_doc_patterns.pdf
>
>
> The way in which PDFBox handles the Page tree needs to be rewritten,
> preferably from scratch. Currently the document catalog returns the raw
> objects from the page tree, wrapped in either a PDPage or PDPageNode.
> We need to abstract over the page tree and get rid of PDPageNode, we should
> provide methods which can add/remove PDPage objects *only*. The existing
> low-level access to the page tree is not needed at the PD-level.
> Inheritance of page properties such as crop box, resources, and rotation
> should be reimplemented to use whatever new page tree abstraction we invent.
> We can finally remove the old broken methods which didn't look up the
> inheritance tree when retrieving these values.
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