SVG's with a mask for outside stroke don't render properly when converted to PDF
Reported by
alecazam...@gmail.com,
Aug 14 2016
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Issue descriptionUserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.11; rv:46.0) Gecko/20100101 Firefox/46.0 Example URL: Steps to reproduce the problem: 1. Generate an svg using a mask to handle outside stroke. This is a 2x width stroke with inverted mask of the fill. 2. Print... PDF -> save as PDF (or print) 3. See that the mask is gone, and so are the fills in the PDF. What is the expected behavior? Honor inside/outside stroke in the SVG correctly. This causes signficant rendering artifacts from the visible SVG to the PDF. What went wrong? The browser don't seem to be converting the mask properly in this case. This is one of the few methods of exporting inside/outside stroke in a SVG 1.1 file. It renders properly, so it should print as well. I'm surprised that none of the browser PDF converters get a lot of the vector conversions correct. This isn't the only print conversion mismatch (f.e. blend modes in SVG). Chrome is using Skia, Firefox is Cairo, and Safari is using WebKit. I would think at least one of these would get PDF conversion correct. Does it occur on multiple sites: Yes Is it a problem with a plugin? No Did this work before? No Does this work in other browsers? No Firefox, Safari Chrome version: 51.0.2704.103 (Official Build) (64-bit) Channel: stable OS Version: OS X 10.11.2 Flash Version: This file was generate in Figma, which exports inside/outside stroke.
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Aug 14 2016
Here are inside/center/outside stroke examples from the Group.svg, and PDF exports from Chrome, Firefox, and Safari. None of them capture the original SVG content properly, even though each browser renders the SVG correctly. There are obvious gaps and rasterization bleeding on the inside/outside stroke objects (which use an alpha mask to simplify grouping the masks). Chrome is by far the worst of the bunch, but none of them are useable PDF.
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Aug 15 2016
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Aug 15 2016
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Aug 19 2016
thestig: Who would be a good owner for this?
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Aug 19 2016
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Aug 20 2016
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Aug 22 2016
Removing SVG component. We'll be happy to take it back again if it turns out that SVG is sending something non-usable by the pdf canvas.
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Sep 12 2016
simplified test case attached.
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Jun 20 2017
It seems blink is using SkBlendmode::kDstIn. This is not supported by SkPDF.
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Jun 21 2018
This issue has been Available for over a year. If it's no longer important or seems unlikely to be fixed, please consider closing it out. If it is important, please re-triage the issue. Sorry for the inconvenience if the bug really should have been left as Available. For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot |
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Comment 1 by alecazam...@gmail.com
, Aug 14 2016