Bob,
According to the specs, I believe that width and height *may* be
permitted on <img>. 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
[email protected] <mailto:[email protected]>
*From:* Xmplar <mailto:[email protected]>
*Sent:* Friday, January 18, 2013 6:33 AM
*To:* DocBook Apps <mailto:[email protected]>
*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:
<img style="width: 150; " src="images/by-nc.gif" alt="alt text for
Creative Commons licence logo" />
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*
