[tex-eplain] [texhax] XeTeX : images as links

[Khaled Hosny]

Known xdvipdfmx issue http://sourceforge.net/p/xetex/bugs/25/

Regards,
Khaled

On Fri, Sep 20, 2013 at 06:23:58PM +0100, Philip Taylor wrote:
> In a forthcoming PDF catalogue of Greek MSS, a number of "thumbnail"
> images of folia, bindings, etc., will appear, many if not all of
> which will be expected to function as hyperlinks to full-sized
> (or perhaps pannable/zoomable) versions of the same.  However,
> endeavouring to achieve this functionality using either Eplain's
> \hyperref or Eplain's \hlstart/\hlend fails to produce the desired
> effect -- whilst text can act as a clickable region for a hyperlink,
> an image included using \XeTeXpicfile seemingly cannot.	
> 
> The following, a verbatim copy from the test file, demonstrates
> the problem --
> 
> 
> 	\catcode `\< = \catcode `\@
> 		\input eplain
> 	\catcode `\< = \active
> 	
> 	\enablehyperlinks
> 	
> 	\uselanguage {UKenglish}
> 	
> 	\hlstart {url}{}{http://example.org/fullsize}
> 	\hbox
> 	\bgroup
> 	\XeTeXpicfile Images/LPL-MS-1214/JPG/f1r.jpg height 0,25\vsize
> 	\egroup
> 	\hlend
> 	
> 	\vskip \baselineskip
> 	
> 	\hbox
> 	\bgroup
> 	\hlstart {url}{}{http://example.org/fullsize}
> 	\XeTeXpicfile Images/LPL-MS-1214/JPG/f1r.jpg height 0,25\vsize
> 	\hlend
> 	\egroup
> 	
> 	\vskip \baselineskip
> 	
> 	\href{http://example.org/fullsize}{\hbox {\XeTeXpicfile
> Images/LPL-MS-1214/JPG/f1r.jpg height 0,25\vsize}}
> 	
> 	\end
> 
> Needless to say, if any of the \XeTeXpicfiles are replaced by text,
> all works as expected.
> 
> Can anyone please explain why this does not work, and how the
> problem can best be transcended ?  (NB.  UNIV = Plain XeTeX, not XeLaTeX)
> 
> Philip Taylor
> 
> P.S. The catcode stuff at the top is because the real project goes on
> to load an XML file.
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