areaspec feature in docbook
Hello, I'm using Oxygen 7.2 and want to use the areaspec feature to define linkable areas in a graphics object. I tried the example from http://www.docbook.org/tdg/en/html/mediaobjectco.html but don't get the desired result. I did read and follow the readme file in: ...\Oxygen XML Editor 7.2\frameworks\docbook\xsl\extensions I tried the Docbook transformation scenario as delivered with oxygen first, than I also added the DocBook extension to the scenario, than I switched to Xalan (I also switched the extension) but the result is always the same as shown below. Thanks, Achim Input: ------ <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE mediaobjectco PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd"> <mediaobjectco> <imageobjectco> <areaspec units="calspair"> <areaset id="oneway" coords=""> <area id="oneway1" coords="300 400"/> <area id="oneway2" coords="325 340"/> </areaset> <area id="myhouse" coords="425 590"/> </areaspec> <imageobject> <imagedata fileref="http://maps.example.com/EARTH?USA?MA?01007"/> </imageobject> </imageobjectco> </mediaobjectco> Output: ------- <html> <head> <META http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title></title> <meta content="DocBook XSL Stylesheets V1.70.1" name="generator"> </head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> <div class="mediaobjectco"> <img border="0" usemap="N10003" src="http://maps.example.com/EARTH?USA?MA?01007"> <map name="N10003"><area shape="rect" coords="NaN,NaN,NaN,NaN"> <area shape="rect" coords="NaN,NaN,NaN,NaN"> <area shape="rect" coords="NaN,NaN,NaN,NaN"> </map> </div> </body> </html>
Hello Achim, You don't need the DocBook extensions for graphic callouts because you have to compute yourself the coordinates of the callout areas and to add the callout markers to the image. You specified units="calspair" but you did not specify the area coordinates in the CALS system. The result is the NaN coordinates in the HTML map area. A correct example is: <areaspec units="calspair"> <areaset id="oneway-area" linkends="oneway"> <area id="id1" coords="0,2500 2500,0"/> <area id="id2" coords="2500,5000 5000,2500"/> </areaset> <area id="myhouse-area" coords="5000,10000 10000,5000" linkends="myhouse"/> </areaspec> For each area you have to specify two pairs, for the upper left corner and the lower right corner of the callout area. You can read about CALS coordinates in "DocBook: The Definitive Guide": http://www.docbook.org/tdg5/en/html/area.html Also you need a pointer to the target of the link which is represented by the clickable area. You specify that with the linkends attribute of area/areaset which must be the ID of the target callout, for example: <calloutlist> <callout id="oneway" arearefs="oneway-area"> <para>Oneway callout</para> </callout> <callout id="myhouse" arearefs="myhouse-area"> <para>Myhouse callout</para> </callout> </calloutlist> Norman Walsh created two Perl scripts for speeding up the computation of the CALS coordinates of callout areas and the addition of the callout markers to the image: http://norman.walsh.name/2006/06/10/imageobjectco.html Best regards, Sorin Achim Oehlenschlaeger wrote:
Hello, I'm using Oxygen 7.2 and want to use the areaspec feature to define linkable areas in a graphics object. I tried the example from http://www.docbook.org/tdg/en/html/mediaobjectco.html but don't get the desired result.
I did read and follow the readme file in: ...\Oxygen XML Editor 7.2\frameworks\docbook\xsl\extensions
I tried the Docbook transformation scenario as delivered with oxygen first, than I also added the DocBook extension to the scenario, than I switched to Xalan (I also switched the extension) but the result is always the same as shown below. Thanks, Achim
Input: ------ <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE mediaobjectco PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd"> <mediaobjectco> <imageobjectco> <areaspec units="calspair"> <areaset id="oneway" coords=""> <area id="oneway1" coords="300 400"/> <area id="oneway2" coords="325 340"/> </areaset> <area id="myhouse" coords="425 590"/> </areaspec> <imageobject> <imagedata fileref="http://maps.example.com/EARTH?USA?MA?01007"/> </imageobject> </imageobjectco> </mediaobjectco>
Output: ------- <html> <head> <META http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title></title> <meta content="DocBook XSL Stylesheets V1.70.1" name="generator"> </head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> <div class="mediaobjectco"> <img border="0" usemap="N10003" src="http://maps.example.com/EARTH?USA?MA?01007"> <map name="N10003"><area shape="rect" coords="NaN,NaN,NaN,NaN"> <area shape="rect" coords="NaN,NaN,NaN,NaN"> <area shape="rect" coords="NaN,NaN,NaN,NaN"> </map> </div> </body> </html>
participants (2)
-
Achim Oehlenschlaeger -
Sorin Ristache