[xep-support] Role attribute not becoming alt text for images in PDF

Greetings All,

We're using the ENABLE_ACCESSIBILITY=true core option to try and make
our PDFs Section 508 compliant. When I initially enabled this option,
the XEP output messages include the following warning:

WARNING: Some images lack alternate desription; 'No alternate
description specified' will be used for these images.

I read in the XEP User Guide about using the role attribute on the
fo:external-graphic elements to pass alt text to the PDF. I adjusted our
xsl:fo to include appropriate role attributes, for example:

<fo:external-graphic content-height="100%"
                     content-width="scale-to-fit"
                     role="Product architecture diagram"
                     scaling="uniform"
                     src="url(product_architecture.png) "
                     width="100%"/>

Now when I generate a PDF, I no longer see the warning about the lack of
alternate descriptions. However, when I open the PDF in Acrobat Pro and
run the Accessibility Checker, it reports that none of the images have
alternate text. If I open the properties on the image objects, the alt
text field contains no data.

Is this broken or am I missing some detail?

FYI, I'm using XEP 4.16 and Acrobat 9 Pro version 9.1.2. My
configuration options are as follows:

    <options>
        <option name="LICENSE" value="license.xml" />
        <option name="TMPDIR" value="none" />
        <option name="BROKENIMAGE" value="images/404.gif" />
        <option name="LOGO" value="images/logo-renderx.svg" />
        <option name="ENABLE_ACCESSIBILITY" value="true" />
        <option name="VALIDATE" value="true"/>
        <option name="FOOTNOTE_REORDERING" value="true"/>

        <!-- Backend options -->
        <generator-options format="PDF">
            <option name="COMPRESS" value="true" />
            <option name="OWNERPASSWORD" value="zzzzzzzz" />
            <option name="USERPASSWORD" value="" />
            <option name="USERPRIVILEGES" value="print,copy" />
            <option name="PDF_VERSION" value="1.4" />
            <option name="LINEARIZE" value="true"/>
              <option name="DROP_UNUSED_DESTINATIONS" value="false"/>
        </generator-options>
    </options>

Thank you for your help.

Best regards,

Paul Anderson
Information Developer - Codex Administrator
Compuware Corporation
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Received on Wed Jul 22 15:32:44 2009