epub:type for SVG elements?

[GoogleCodeExporter]

EPUB3 introduces @epub:type for HTML elements but did not introduce this 
attribute for SVG elements.  Should we allow this for EPUB 3.0.1?

Original issue reported on code.google.com by eb2m...@gmail.com on 20 Feb 2013 at 4:13

[GoogleCodeExporter]

[deleted comment]

[GoogleCodeExporter]

[deleted comment]

[GoogleCodeExporter]

[deleted comment]

[GoogleCodeExporter]

[deleted comment]

[GoogleCodeExporter]

Original comment by markus.g...@gmail.com on 27 Mar 2013 at 9:39

• Changed state: NeedDiscussion

[GoogleCodeExporter]

Original comment by mgarrish on 28 Mar 2013 at 8:57

• Changed state: NeedsDiscussion

[GoogleCodeExporter]

We should also allow SVG elements to have the prefix attribute  in the 
namespace 
http://www.idpf.org/2007/ops for vocabulary association.

Original comment by eb2m...@gmail.com on 6 May 2013 at 12:25

[GoogleCodeExporter]

Makoto, the WG discussed this on the 0718 call. The question to you, since SVG 
already allowed attributes in foreign namespaces, is whether you agree that it 
would be enough to add prose to the SVG section of the ContentDocs specs that 
say something along the lines of "If the attributes epub:type and epub:prefix 
occur on SVG elements, they must be interpreted as defined in this 
specification".

Original comment by markus.g...@gmail.com on 31 Jul 2013 at 11:12

[GoogleCodeExporter]

I read "2.1.3.1 Semantic Inflection" in the ContentDocs
spec.  Do we allow the epub:prefix attribute in some
HTML element to define prefixes in epub:type attributes
of in-line SVG elements?

To clarify such edge cases, I think that we need three
changes

1) slightly change 2.1.3.1 for SVG elements in HTML content docs;
2) create a new subsection in "2.1.4.2. Embedded SVG" for epub:type; and
3) copy 2.1.3.1. Semantic Inflection to "2.3 SVG Content Documents"

Original comment by eb2m...@gmail.com on 10 Aug 2013 at 7:35

[GoogleCodeExporter]

I believe the intent was that @epub:prefix was only valid on the root html
element, the same way it is only valid on the root package element, for
processing simplicity. We could make that more explicit, but that's how the
schema defines its use.

Adding a 2.1.4.2.2 for semantic markup that indicates that both epub:type
and RDFa attributes are allowed on embedded SVG could be done for clarity,
but as Markus notes these are allowed whether we say so or not. It might be
worth clarifying whether @prefix is also allowed on the root svg element
when embedded, though. I'm thinking it should be allowed, but not required,
for consistency with standalone svg.

For 2.3 I'd recommend just pointing to the section in xhtml, noting that
the mechanisms and default vocabulary are the same, rather than redefine
everything again, since all we're doing is allowing the attributes
(technically semantic inflection should be standalone and referenced by
both xhtml and svg, but that would be a bigger change). Maybe this
requirement could even be done as a content conformance bullet rather than
a full new section?

Original comment by mgarrish on 10 Aug 2013 at 1:13

[GoogleCodeExporter]

Matt, thanks for your observations about permissible locations of the prefix 
attribute.  It makes sense to allow it for the html and svg elements and 
nowhere else.

We might want to create a new section (before "2. EPUB Content Documents") 
for semantic inflection rather than in SVG or HTML, especially because we 
might want to allow epub:type for MathML.

Original comment by eb2m...@gmail.com on 10 Aug 2013 at 1:38

[GoogleCodeExporter]

And scratch RDFa from my comment in #10. I don't believe those can be used in 
SVG 1.1 since they aren't in a separate namespace (SVG 1.2 introduces them as 
core attributes).

Original comment by mgarrish on 29 Aug 2013 at 3:00

[GoogleCodeExporter]

Specification has been updated as resolved on the 2013-08-29 telecon:

https://code.google.com/p/epub-revision/source/detail?r=4720

For review:

Restricting epub:prefix to the root html element in the existing semantic 
inflection section:

https://epub-revision.googlecode.com/svn-history/r4720/trunk/build/301/spec/epub
30-contentdocs.html#sec-contentdocs-prefix-attr

New semantic inflection section for SVG:

https://epub-revision.googlecode.com/svn-history/r4720/trunk/build/301/spec/epub
30-contentdocs.html#sec-svg-semantic-inflection

Original comment by mgarrish on 30 Aug 2013 at 9:03

• Changed state: FinalReview

[GoogleCodeExporter]

Original comment by markus.g...@gmail.com on 4 Sep 2013 at 9:49

• Changed state: Done