Bob,
According to the specs, I believe that width and height *may* be
permitted on . These should actually be the default, or at least a
parameterized option, for DocBook.
I'm testing my HTML pages in the latest Firefox - if images don't appear
sized correctly (i.e. as they are coded in the xml with 'width' or
'contentwidth') then it means a lot of post-processing of the HTML. I'd
rather have images turn out the size that I specify (funnily enough),
and 'width' inside 'style' doesn't work.
On 19-01-13 4:54 AM, Bob Stayton wrote:
> Hi Dave,
> The status of the width and many other attributes changed in HTML5,
> which is what Epub3 is based on. For most HTML5 elements, the width
> attribute is deprecated, and should be replaced with the CSS style.
> In an earlier draft of HTML5, that was true for img as well. However,
> the latest draft shows that width and height attributes are permitted
> on img.
> The xhtml5 stylesheet is a customization of the DocBook xhtml
> stylesheet. To handle these deprecated attributes, there is a
> template with match="*" in mode="convert.to.style" that rewrites the
> deprecated attributes as parts of a style attribute for an HTML
> element. That template is in xhtml5/html5-element-mods.xsl. You
> will see that it includes width.
> Since this is a mode, we should be able to add a template with
> match="x:img" (the x: namespace is the XHTML namespace) and change
> that behavior so width is output for img. However, I'm not sure it is
> that easy, since width is also involved with creating a viewport for
> an image. I'll look into it.
> Bob Stayton
> Sagehill Enterprises
>
bobs@sagehill.net <mailto:
bobs@sagehill.net>
>
> *From:* Xmplar <mailto:
info@xmplar.biz>
> *Sent:* Friday, January 18, 2013 6:33 AM
> *To:* DocBook Apps <mailto:
docbook-apps@lists.oasis-open.org>
> *Subject:* [docbook-apps] Setting width for mediaobject in EPUB
>
> I'm specifying the width of an image using the <imagedata> attribute
> 'width' (and I've also tried 'contentwidth'). When I transform to an
> EPUB 3, I get the width coded as a style attribute:
>
>

>
> The image doesn't render to a width of 150px. But removing the style
> setting and replacing it with the img attribute 'width' does work.
> Where do I find the stylesheet coding that sets style="width: ; ".
> I've looked in XHTML1-1/graphics.xsl and there's nothing obvious that
> sets the style attribute with a value of 'width' (all instance of
> 'style' refer to text-align).
> --
> *Dave Gardiner*
>
--
*Dave Gardiner*