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From "Tilman Hausherr (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (PDFBOX-2423) Page tree handling needs rewriting
Date Sat, 01 Nov 2014 13:57:34 GMT

    [ https://issues.apache.org/jira/browse/PDFBOX-2423?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14193170#comment-14193170

Tilman Hausherr commented on PDFBOX-2423:

[~jahewson] I'm reverting [  http://svn.apache.org/r1635728 ]. I suspect this was done by
mistake. I looked at SetStrokingDeviceRGBColor and it makes no sense to set the NON Stroking
color there, and it wasn't set a month ago. I did already make a test with PDFBOX-2385-146515.pdf
and it renders fine now. I'll run a few more tests first.

> 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: 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,
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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