[xep-support] 4.1 rx:background-content-height/width complaining about "scale-to-fit"

When I create a block container like this:

<fo:block-container
     background-image="url(graphics/mybackgroundgraphic.svg)"
     rx:background-scaling="non-uniform"
     rx:background-content-height="scale-to-fit"
     inline-progression-dimension="9pc">

XEP issues messages of the form:

   [warning] Bad attribute value backround-content-height: Attribute
type mismatch: background-content-height cannot have value
"scale-to-fit" of type Word.

"scale-to-fit" is one of the allowed values of content-height= so I
would expect it to be allowed here.

The desired behavior in this case is that the background image would be
scaled to fit the final size of the block container based on the size of
its child formatting objects.

The actual requirement in this case is to produce a box with rounded
corners, which I'm doing using an SVG background image. The problem is
that the block-progression-dimension of the block container cannot be
known at FO generation time.

Another way to satisfy this requirement would be to add an extension for
creating boxes with rounded corners (which is trivially easy to do in
PDF but obviously a bit beyond the current scope of FO, and could get a
bit complex if you starting thinking it would be nice to do more than
just specify a radius for the corner curve....). Just a thought :-)

Cheers,

Eliot

-- 
W. Eliot Kimber
Professional Services
Innodata Isogen
9390 Research Blvd, #410
Austin, TX 78759
(512) 372-8122
ekimber@innodata-isogen.com
www.innodata-isogen.com
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