Hi,
I am having difficulty getting an example working from the book 'XSLT
cookbook' by Sal Mangano, recipe 12.3 (page 542).
I receive the following error for the SVG bounding box example on running
"c:\my path...\saxon textWidthTest.xml textWidthTest.xslt > output.svg" at
the CMD line:
Error at xsl:value-of on line 17 of file:/c:/my path/textwidthtest.xslt:
The URI xalan://com.ora.xsltckbk.util.SVGFontMetrics does not identify an
external Java class
Transformation failed: Run-time errors were reported
Here is the XLST and java file used:
XSLT file
------------------------------
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:xalan="http://xml.apache.org/xslt"
xmlns:font="xalan://com.ora.xsltckbk.util.SVGFontMetrics"
exclude-result-prefixes="font xalan">
<xsl:output method="xml"/>
<xsl:template match="/">
<svg width="100%" height="100%">
<xsl:apply-templates/>
</svg>
</xsl:template>
<xsl:template match="text">
<xsl:variable name="fontMetrics" select="font:new(@font, @size,
boolean(@weight), boolean(@stytle))"/>
<xsl:variable name="text" select="."/>
<xsl:variable name="width" select="font:stringWidth($fontMetrics,
$text)"/>
<xsl:variable name="height" select="font:stringHeight($fontMetrics,
$text)"/>
<xsl:variable name="style">
<xsl:if test="@style">
<xsl:value-of select="concat('font-style:',@style)"/>
</xsl:if>
</xsl:variable>
<xsl:variable name="weight">
<xsl:if test="@weight">
<xsl:value-of select="concat('font-weight:',@weight)"/>
</xsl:if>
</xsl:variable>
<g style="font-family:{(_at_)font};font-size:{(_at_)size};{$style};{$weight}">
<!-- Use the SVGFontMetrics info render a rectangle that is -->
<!-- slightly bigger than the expected size of the text -->
<!-- Adjust the y position based on the previous text size. -->
<rect x="10"
y="{sum(preceding-sibling::text/@size) * 2}pt"
width="{$width + 2}"
height="{$height + 2}"
style="fill:none;stroke: black;stroke-width:0.5;"/>
<!-- Render the text so it is cenetered in the rectangle -->
<text x="11" y="{sum(preceding-sibling::text/@size) * 2 + @size div 2 +
2}pt">
<xsl:value-of select="."/>
</text>
</g>
</xsl:template>
</xsl:stylesheet>
Java class in package (xsltckbk.jar)
-----------------------------------------------
package com.ora.xsltckbk.util ;
import java.awt.* ;
import java.awt.geom.* ;
import java.awt.font.* ;
import java.awt.image.*;
public class SVGFontMetrics
{
public SVGFontMetrics(String fontName, int size)
{
m_font = new Font(fontName, Font.PLAIN, size) ;
BufferedImage bi
= new BufferedImage(1, 1, BufferedImage.TYPE_INT_ARGB);
m_graphics2D = bi.createGraphics() ;
}
public SVGFontMetrics(String fontName, int size, boolean bold, boolean
italic)
{
m_font = new Font(fontName, style(bold,italic) , size) ;
BufferedImage bi
= new BufferedImage(1, 1, BufferedImage.TYPE_INT_ARGB);
m_graphics2D = bi.createGraphics() ;
}
public double stringWidth(String str)
{
FontRenderContext frc = m_graphics2D.getFontRenderContext();
TextLayout layout = new TextLayout(str, m_font, frc);
Rectangle2D rect = layout.getBounds() ;
return rect.getWidth() ;
}
public double stringHeight(String str)
{
FontRenderContext frc = m_graphics2D.getFontRenderContext();
TextLayout layout = new TextLayout(str, m_font, frc);
Rectangle2D rect = layout.getBounds() ;
return rect.getHeight() ;
}
static private int style(boolean bold, boolean italic)
{
int style = Font.PLAIN ;
if (bold) { style |= Font.BOLD;}
if (italic) { style |= Font.ITALIC;}
return style ;
}
private Font m_font = null ;
private Graphics2D m_graphics2D = null;
}
I have searched the http://www.mulberrytech.com/xsl/xsl-list archives, and
numerous other sites for the answer, edited the classpath to include
"xsltckbk.jar" but to no avail.
Any help appreciated.
Linc
XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list