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Posted to dev@pdfbox.apache.org by "Tilman Hausherr (JIRA)" <ji...@apache.org> on 2016/12/02 18:07:58 UTC
[jira] [Comment Edited] (PDFBOX-3000) Transparency Group issues
[ https://issues.apache.org/jira/browse/PDFBOX-3000?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15715714#comment-15715714 ]
Tilman Hausherr edited comment on PDFBOX-3000 at 12/2/16 6:07 PM:
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The last commit was developed by debugging the rendering of PDFJS-5811-2-p3_reduced4.pdf which has two nested transparency groups, none of which start at (0,0). After doing the upper change ({{new PDRectangle(...}}), many files were improved but some black rectangles started to appear in some files, and a mysterious vertical line appeared in the middle of a less reduced version, PDFJS-5811-2-p3_reduced.pdf, which has a softmask. Zooming in on that one showed some grey that was at about 1/2 of the square. That one gave it away that the softmask was also wrong by an offset, and this resulted in the second change, in getBounds(). This fixed quite a lot of files.
And I'm also learned something: colors at wrong position => transparency problem. Black squares, shadows at wrong position => softmask problem.
Improved files:
- bugzilla-852992.pdf: color change is back, but not perfect
- ds-firewall-enterprise-p1.pdf: perfect, cables visible
- gs-bugzilla686747.ai: probably perfect, gradient masking of lower happy birthday now there
- gs-bugzilla688601.pdf: perfect
- gs-bugzilla689095.pdf: mostly perfect, inside of "verso" visible
- gs-bugzilla689918-veryslow.pdf: probably perfect, star is shining
- gs-bugzilla690351-p10.pdf: probably perfect, shadows correct
- gs-bugzilla690535.pdf: euro visible, although not in gold
- gs-bugzilla691182.pdf: perfect, car and shadow correct
- gs-bugzilla691218.pdf: improved, shadow below SONATA
- gs-bugzilla694556-3.pdf: perfect, shadows correct
- gs-bugzilla694585.pdf: probably perfect, blue ball is back
- gs-bugzilla695354.pdf: perfect, shadows correct
- gs-bugzilla697350.pdf: perfect
- PDFBOX-1058.pdf: probably perfect, fine lines are back
- PDFBOX-3494.pdf: perfect, shadow correct
- PDFBOX-3501.pdf: perfect, background colors now visible
- PDFJS-1324-2012_visitorsguide_web.pdf p4: perfect, "under construction" watermark visible; p3: footprints visible
-
...
Changed files:
- gs-bugzilla688870.pdf
Worsened files:
- bugzilla869140.pdf: girls room no longer pink
- gs-bugzilla692217.pdf: shadows at wrong position
was (Author: tilman):
The last commit was developed by debugging the rendering of PDFJS-5811-2-p3_reduced4.pdf which has two nested transparency groups, none of which start at (0,0). After doing the upper change ({{new PDRectangle(...}}), many files were improved but some black rectangles started to appear in some files, and a mysterious vertical line appeared in the middle of a less reduced version, PDFJS-5811-2-p3_reduced.pdf, which has a softmask. Zooming in on that one showed some grey that was at about 1/2 of the square. That one gave it away that the softmask was also wrong by an offset, and this resulted in the second change, in getBounds(). This fixed quite a lot of files.
And I'm also learned something: colors at wrong position => transparency problem. Black squares, shadows at wrong position => softmask problem.
Improved files:
...
Changed files:
...
Worsened files:
...
> Transparency Group issues
> -------------------------
>
> Key: PDFBOX-3000
> URL: https://issues.apache.org/jira/browse/PDFBOX-3000
> Project: PDFBox
> Issue Type: Bug
> Components: Rendering
> Affects Versions: 2.0.0
> Reporter: John Hewson
> Fix For: 2.1.0
>
> Attachments: 007087-payment-due-p58_reduced2.pdf, PDFBOX-1697-reduced-rotations.pdf, PDFBOX-2182_mod.pdf, PDFBOX-3400-RGB.pdf, PDFBOX-3494_reduced.pdf, PDFBOX-3494_reduced_cropX.pdf, PDFBOX-3564-Mask.pdf, PDFBox3359PanelTestEnhanced.java, PDFJS-2845-p1.pdf, PDFJS-5811-2-p3_reduced.pdf, PDFJS-5811-2-p3_reduced4.pdf, PDFJS-5811-2-p4_reduced-rotations.pdf, PDFJS-5811-2.pdf, PDFJS-5853_reduced.pdf, ds-firewall-enterprise-p1_reduced.pdf, gs-bugzilla691157.pdf, gs-bugzilla691157_mod_unc.pdf, gs-bugzilla691157_mod_unc.png, gs-bugzilla691348.pdf, gs-bugzilla693322_reduced.pdf, gs-bugzilla694556-3.pdf, gs-bugzilla695354.pdf, gs-bugzilla695582-transparency-fill-stroke.pdf, gs-bugzilla695582-transparency-fill-stroke.pdf-1.png, samsung_galaxy_s_4_um-p1_reduced.pdf, softmask-rewrite-alt1.patch, softmask-rewrite.patch
>
>
> This is a follow-up issue for transparency group issues from PDFBOX-2423. More details to come.
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