RE: [docbook-apps] Image maps in PDF output

["Dominik Psenner" <dpsenner@gmail.com>]

Hi Tyson,

In general docbook documents are transformed to an intermediate
representation before they are processed to pdf. The intermediate
representation is FO (formatting objects).

Have you tried to write down a couple of formatting objects (FO) that FOP is
capable of processing them to pdf as you want?

If you were able to do that, it shouldn't be much work to put that stuff
into the right place within a docbook document and adapt the respective
stylesheets to process that data so that it will work in the future.

Cheers,
Dominik

>-----Original Message-----
>From: Tyson Marchuk [mailto:tmarchuk@cdlsystems.com]
>Sent: Monday, May 07, 2012 4:29 PM
>To: docbook-apps@lists.oasis-open.org
>Subject: Re: [docbook-apps] Image maps in PDF output
>
>Hi Bob,
>
>Thank you. I guess I'll have to do something else then if hotspots on
>graphics are not supported in PDFs. I did some more searching and
>apparently PDFs do support this
>(http://www.authorst.com/hot_graphics_in_pdf_file.php) so I guess it is
>a limitation of the DocBook XSL to PDF conversion (which I guess is what
>you're saying below although I don't quite understand the concept of
>extensions in this context.)
>
>Thank you for your time,
>-Tyson
>
>On 2012/05/06 1:00 AM, Bob Stayton wrote:
>> Hi Tyson,
>> That message you referred to did not cover imagemaps.  It was
>> referring to using callout icons in a programlisting.  In that case,
>> an extension function is needed to preprocess the text in the
>> programlisting to place the callout images in with the text, and that
>> mix is then processed by DocBook XSL into PDF output.  There is no
>> equivalent extension for mixing callouts or other hot spots with
>> images, as far as I know.  I hope someone proves me wrong.
>>
>> Bob Stayton
>> Sagehill Enterprises
>> bobs@sagehill.net
>>
>>
>> ----- Original Message ----- From: "Tyson Marchuk"
>> <tmarchuk@cdlsystems.com>
>> To: <docbook-apps@lists.oasis-open.org>
>> Sent: Friday, May 04, 2012 4:09 PM
>> Subject: [docbook-apps] Image maps in PDF output
>>
>>
>>> Hello,
>>>
>>> I'm new to Docbook and I'm trying to create an image map (click-able
>>> image where clicking different sections of the image results in going
>>> to different locations in the document) in a PDF document. I've run
>>> across this reference
>>> (http://www.sagehill.net/docbookxsl/Imagemaps.html) which seems to
>>> suggest this can't be done in PDFs with Docbook but it was published
>>> in 2007 and I saw a post on this mailing list from 2012
>>> (http://lists.oasis-open.org/archives/docbook-apps/201202/msg00010.html)
>>> which seems to suggest it should work in PDFs. I've used the example
>>> code from the first link with slight modifications (copied below) on
>>> one of my graphics and changed the stylesheet to only use numbers and
>>> while the output does have the numbers and text below the graphic
>>> there does not appear to be any linking going on in the document
>>> between the graphic and callouts.
>>>
>>> Is this a limitation of PDFs or Docbook or am I doing something wrong?
>>>
>>> Thank you for your time and help,
>>> Tyson Marchuk
>>>
>>> <mediaobjectco>
>>> <imageobjectco>
>>> <areaspec id="map1" units="calspair">
>>> <area linkends="callout1" coords="0,0 5000,10000" id="area1"/>
>>> <area linkends="callout2" coords="5000,0 10000,10000" id="area2"/>
>>> </areaspec>
>>> <imageobject>
>>> <imagedata fileref="images/myImage.png" />
>>> </imageobject>
>>> <calloutlist>
>>> <callout arearefs="area1" id="callout1">
>>> <para>My only callout1</para>
>>> </callout>
>>> <callout arearefs="area2" id="callout2">
>>> <para>My only callout2</para>
>>> </callout>
>>> </calloutlist>
>>> </imageobjectco>
>>> </mediaobjectco>
>>>
>>>
>>>
>>>
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>>
>>
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