Re: [docbook-apps] Weird callout issue

[Alexander Karnstedt <alexander_berlin@gmx.de>]

>At 12:01 19.06.2004, DaveP wrote:
>Anyone have the tools to get a full suite of images
>of the right size?
>   I used an image grabber, then manually sized them
>which is the source of the problem.

I've just played a bit with Ant + XSL/SVG/Rasterizer and got a script wich 
does the following tasks:

- loop over a list of numbers 1..15

- applying a XSL transformation to a SVG-template (circle with empty text 
element in the middle) that puts a value into the text element

- rasterize the SVG to PNG

(n.b. this needs the rasterize task from Apache Batik and the foreach task 
from http://ant-contrib.sourceforge.net/ )


Alex



build.xml
--------------------------------------------------------
<?xml version="1.0"?>
<project default="main"  basedir=".">

   <property name="number.list" value="1,2,3,4,5,6,7,8,9,10,11,12,13,14,15"/>

   <target name="init">
     <taskdef name="rasterize" 
classname="org.apache.tools.ant.taskdefs.optional.RasterizerTask"/>
     <taskdef resource="net/sf/antcontrib/antcontrib.properties"/>
   </target>

   <target name="main" depends="init">
     <foreach list="${number.list}" delimiter="," param="number" 
target="createSVGCallout" inheritall="true"/>
   </target>

   <target name="createSVGCallout">
     <xslt in="number.xml"
           out="number-${number}.svg"
           style="callout-svg.xsl">
       <param name="vext" expression="${number}"/>
     </xslt>
   <antcall target="doRasterize"/>
   <!--<delete file="number-${number}.svg"/>-->
   </target>

   <target name="doRasterize">
     <rasterize
       result="image/png"
       dest="number-${number}.png"
       src="number-${number}.svg">
     </rasterize>
   </target>

</project>


number.xml  (the text element is empty - it'll be filled by callout-svg.xsl)
--------------------------------------------------------
<?xml version="1.0"?>
<svg width="15" height="15" viewBox="0 0 15 15">
   <g transform="translate(0,0)" 
style="font-family:serif;font-size:13;font-weight:bold">
     <circle cx="7.5" cy="7.5" r="7" 
style="stroke:rgb(0,0,0);fill:black;stroke-width:1"/>
     <g style="stroke:none;fill:white">
       <text id="number" text-anchor="middle" x="7.5" y="11.5"></text>
     </g>
   </g>
</svg>


callout-svg.xsl   (to convert number.xml to number-x.svg - variable $vext 
is passed as parameter to the XSL processor)
--------------------------------------------------------
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform";>
   <xsl:output method="xml"/>
   <xsl:param name="vext" select="'0'"/>
   <xsl:template match="@*|node()">
     <xsl:copy>
       <xsl:apply-templates select="@*|node()"/>
     </xsl:copy>
   </xsl:template>
   <xsl:template match="text[@id='number']">
     <xsl:copy>
       <xsl:apply-templates select="@*"/>
       <xsl:value-of select="$vext"/>
     </xsl:copy>
   </xsl:template>
</xsl:stylesheet>