I've got a bunch of screenshots containing hand-drawn arrows and annotations
that I think would be better done as callouts, but I don't seem to be able to
get callouts rendering properly to PDF.
Do they actually work?
If they do, does anyone have a working example they could share? Here's my
non-working XML:
<mediaobjectco>
<imageobjectco>
<areaspec units="calspair">
<area coords="5000,5000 5100,5100" id="p1" linkends="c1"/>
</areaspec>
<imageobject>
<imagedata fileref="/path/to/screenshot.png" scale="50"/>
</imageobject>
<calloutlist>
<callout arearefs="p1">
<para>Here I am in the middle.</para>
</callout>
</calloutlist>
</imageobjectco>
</mediaobjectco>
[I'm not sure what purpose the linkends="c1" serves, if any.]
With the default docbook.xsl stylesheet and XEP this renders as a completely
plain screenshot without any overlaid numbers. The callout underneath is
rendered OK as a white 1 in a black circle.
Chris
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