Last modified: 2014-04-09 10:53:40 UTC

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Bug 63703 - Incorrect text positioning in SVG rasterization (any extreme down scale)
Incorrect text positioning in SVG rasterization (any extreme down scale)
Status: NEW
Product: Wikimedia
Classification: Unclassified
SVG rendering (Other open bugs)
wmf-deployment
All All
: Low normal (vote)
: ---
Assigned To: Nobody - You can work on this!
https://commons.wikimedia.org/wiki/Fi...
:
Depends on:
Blocks:
  Show dependency treegraph
 
Reported: 2014-04-08 21:30 UTC by PRO
Modified: 2014-04-09 10:53 UTC (History)
1 user (show)

See Also:
Web browser: ---
Mobile Platform: ---
Assignee Huggle Beta Tester: ---


Attachments
text with only 1 down scaled <rect> element 1:100 (1.68 KB, image/svg+xml)
2014-04-08 21:30 UTC, PRO
Details

Description PRO 2014-04-08 21:30:36 UTC
Created attachment 15057 [details]
text with only 1 down scaled <rect> element 1:100

Problem version: [[File:Ikaros_solar_sail_key_plain.svg]] - with scale(.06) (= matrix(.06 0 ...)

Fixed version: [[File:Ikaros_solar_sail_key.svg]] - down scale removed

The bug 34947 looks at first glance exactly, but these has other effects and  very different cause. I've also analyzed some text problems from bug 17845, which was already fixed but someone has it reopened with other/this examples (DejaVu font) with other different issue, so I open this new general bug, because I found the concrete cause and can differentiate it clear.

I guess every font family is affected, the font-size is also irrelevant (all font related seems irrelevant, thats the main difference to bug 34947)

Every SVG element(regardless of whether text or not) that got a down scale 1 : >5 and lays under the text (in the code only) has a negative effect on the font rendering. The larger the down scaling the greater the effect.

Another example:
[[File:Glaubensartikel des Islam.svg]] (19:14, 6. Apr. 2014, that is fixed now) has rendered as 
https://upload.wikimedia.org/wikipedia/commons/thumb/archive/b/b4/20140406212617!Glaubensartikel_des_Islam.svg/300px-Glaubensartikel_des_Islam.svg.png

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