| Summary: | FILESAVE: Gradients corrupted on export to PDF | ||
|---|---|---|---|
| Product: | LibreOffice | Reporter: | Richard Corner <rac9876> |
| Component: | Drawing | Assignee: | Not Assigned <libreoffice-bugs> |
| Status: | RESOLVED WORKSFORME | QA Contact: | |
| Severity: | normal | ||
| Priority: | medium | CC: | barta, pierre-eric |
| Version: | 3.4.5 release | ||
| Hardware: | Other | ||
| OS: | All | ||
| Whiteboard: | BSA | ||
| i915 platform: | i915 features: | ||
| Attachments: |
LibreOffice Draw file that can be used to reproduce the problem
PDF file resulting from export, with gradient showing horizontal lines ODG PDF comparison |
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Created attachment 56459 [details]
PDF file resulting from export, with gradient showing horizontal lines
Reproduced with LibreOffice 3.5.0rc3 7e68ba2-a744ebf-1f241b7-c506db1-7d53735 Ubuntu 10.04.3 x86 Linux 2.6.32-38-generic Russian UI I load this gradient in acroread and I see a reasonably linear gradient. Are you sure you're not just seeing rendering artifacts in the viewer ? :-) It is possible of course that we do some subsetting of gradients inside the VCL rendering rather than writing them out to PDF as gradients, worth digging into: vcl/source/gdi/pdfwriter.cxx to see what is going on there. The issue seems to be on the side of the pdf viewer. I tested a bunch of document, and Adobe Reader displays gradients just fine when Evince, ImageMagick and pdftocairo fail (visible horizontal lines). On a side note the function handling gradients in pdfwriter_impl2.cxx (PDFWriterImpl::playMetafile) has 2 ways to draw them and use USE_PDFGRADIENTS constant to decide which implementation to use. As USE_PDFGRADIENTS is always unset (AFAIK), maybe some cleanup here is necessary ? @Richard Corner: this problem should be fixed in the next LibreOffice version (at least for linear and axial gradients). You can also help by testing daily versions (http://dev-builds.libreoffice.org/daily/master/) to make sure your problem is properly fixed. Thanks! Created attachment 91911 [details]
ODG PDF comparison
tested your ODG file with LibO 4.1.4.2 under Win7 64bit and exported it to PDF. output file has smooth gradient like the original.
see my screenshot.
I mark this as RESOLVED WORKSFORME
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Created attachment 56458 [details] LibreOffice Draw file that can be used to reproduce the problem Problem description: Steps to reproduce: 1. Create a document with a callout containing a gradient going from dark at the top to light at the bottom. 2. Use File > Export to export to one of the above formats. 3. Open the resulting file in GIMP or another program. Current behavior: The gradient when opened in the other program looks messed up, with lots of horizontal lines across it. Expected behavior: The gradient when opened in the other program should be smooth, looking like it did in LibreOffice Draw. Platform (if different from the browser): Windows 7 Home 64-bit. Browser: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/535.7 (KHTML, like Gecko) Chrome/16.0.912.77 Safari/535.7