ISSUE-2321: Consider removing/replacing filter margin attributes
Consider removing/replacing filter margin attributes
- State:
- RAISED
- Product:
- Module: Filters
- Raised by:
- Erik Dahlström
- Opened on:
- 2010-04-21
- Description:
- [[ For a blur (as well as some other filters) it is useful to make the
filter effects region larger than the bounding box of the object.
However, this requires the region to larger by a fixed number of pixels
(in user space coordinates), instead of being a multiple of the bounding
box. (This was in fact the root cause of a bug reported for Inkscape,
where a blur would disappear for a completely horizontal/vertical line.) ]]
There is a proposal to replace the mx,my,mw,mh attributes with something that lets the UA calculate an appropriate margin automatically. It needs to be considered that this might break backwards compatibility (depending on how it's solved).
There seems to be agreement on having the filter primitive subregion define a clipping area that affects the filter primitive output image: http://lists.w3.org/Archives/Public/www-svg/2010Apr/0099.html
Thread:
http://lists.w3.org/Archives/Public/www-svg/2010Apr/0070.html
Bugreports:
https://bugs.launchpad.net/inkscape/+bug/168943
https://bugzilla.mozilla.org/show_bug.cgi?id=467930
https://bugzilla.mozilla.org/show_bug.cgi?id=470542 - Related Actions Items:
ACTION-2774 on Erik Dahlström to Remove the filter margin attributes - due 2010-05-03, closed- ACTION-2775 on Erik Dahlström to Investigate alternative ways of handling subregions for filters - due 2010-05-03, open
- Related emails:
- Minutes, Mon 26 April 2010 SVG WG meeting (from jwatt@jwatt.org on 2010-04-26)
- Agenda SVG WG telcon April 26, 2010 (from ed@opera.com on 2010-04-26)
- Re: Margins for filters? (from robert@ocallahan.org on 2010-04-22)
- Regrets: SVG WG telcon April 22, 2010 (from anthony.grasso@cisra.canon.com.au on 2010-04-22)
- Agenda SVG WG telcon April 22, 2010 (from ed@opera.com on 2010-04-21)
- Re: Margins for filters? (from ed@opera.com on 2010-04-21)
- ISSUE-2321: Consider removing/replacing filter margin attributes [SVG Filters 1.2] (from sysbot+tracker@w3.org on 2010-04-21)
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