Issue 116231

Summary: Drawing elements with radial transparency gradients not exporting to PDF correctly.
Product: Draw Reporter: davidjprokopetz <dave>
Component: save-exportAssignee: AOO issues mailing list <issues>
Status: CONFIRMED --- QA Contact:
Severity: Trivial    
Priority: P3 CC: gptognola, issues, rb.henschel
Version: OOO330m18   
Target Milestone: ---   
Hardware: PC   
OS: Windows XP   
Issue Type: DEFECT Latest Confirmation in: ---
Developer Difficulty: ---
Attachments:
Description Flags
ODG file illustrating radial transparency issue.
none
PDF export from previously attached ODG file (using OOO320m18)
none
PDF export from previous attached ODG file, just for reference (using DEV300m95)
none
source file
none
resulting pdf with compression in 100% quality
none
export with loosless compression. Resolution is OK now, but edges are still wrong. Look with 800% zoom. none

Description davidjprokopetz 2010-12-27 07:11:54 UTC 
When exporting PDFs from ODG files containing drawing elements with radial
transparency gradients, intermittent issues with the transparency in the
resulting PDF were observed: the affected elements fade to solid black, totally
obscuring whatever lies behind them, rather than fading to the desired
transparency level.

I'm not 100% certain what's triggering the problem; it seems to affect some, but
not all, elements with radial transparency in any given file.  However, I've
managed to construct a sample file that illustrates both the issue and the
inconsistent nature of it (only three out of four transparent elements are
affected).  Both the sample file and the resulting PDF output are attached.

This issue was observed in both the current stable release (OOO320m18).  When I
tried it with the current dev snapshot (DEV300m95) instead, the "fade to black"
issue was absent, but the output was difficult to evaluate because the
transparent regions of the drawing elements didn't align correctly with their
outlines.

For reference, I'm running Windows XPSP3 (Build 2600.xpsp_sp3_gdr.100427-1636)
and viewing with Adobe Reader 9.3.0.
Comment 1 davidjprokopetz 2010-12-27 07:12:38 UTC 
Created attachment 75419 [details]
ODG file illustrating radial transparency issue.
Comment 2 davidjprokopetz 2010-12-27 07:14:05 UTC 
Created attachment 75420 [details]
PDF export from previously attached ODG file (using OOO320m18)
Comment 3 davidjprokopetz 2010-12-27 07:15:14 UTC 
Created attachment 75421 [details]
PDF export from previous attached ODG file, just for reference (using DEV300m95)
Comment 4 Regina Henschel 2010-12-27 12:57:54 UTC 
The export of gradient transparency is wrong, if a JPEG compression with a
percent quality is used, even it is 100%. There is no error, if looseless
compression is used and there is no error, if a uniform transparency is used.
I'll attach a test file and its export to pdf with 100% compression.

The error is not in the transparency but in the edges and the resolution.

I have used DEV300m95 on WinXP.
Comment 5 Regina Henschel 2010-12-27 12:58:55 UTC 
Created attachment 75422 [details]
source file
Comment 6 Regina Henschel 2010-12-27 13:00:07 UTC 
Created attachment 75423 [details]
resulting pdf with compression in 100% quality
Comment 7 Regina Henschel 2010-12-27 13:03:51 UTC 
Created attachment 75424 [details]
export with loosless compression. Resolution is OK now, but edges are still wrong. Look with 800% zoom.
Comment 8 wolframgarten 2011-01-03 08:48:53 UTC 
Problem of black export is fixed in OOO330_m18 but non-fitting filling still
remains. Reassigned.
Comment 9 oooforum (fr) 2015-07-24 15:15:47 UTC 
*** Issue 126419 has been marked as a duplicate of this issue. ***