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Subject: Re: [docbook] DB-HTML how to scale down too wide imgages (without attr in imagedata)
On Wed, Jul 16, 2003 at 11:10:17AM +0200, Sebastian Fey wrote: > hi, > > im just customizing the docbook-xsl style sheets for HTML output. > > i got some images that are too wide for to be displayed in the browser. > > is there a way like set a param to "800px" and each image surpassing this > width will be scaled down? There is no 'maximum.image.width' parameter, but it might make a nice feature request. 8^) > or, if not, is a template possible / existing in the sheets that returns the > width of an image? Yes, if you are using Saxon or Xalan, Norm has written some XSL extension functions that attempt to extract the width information from an image file. In html/graphics.xsl, you will see something like this: <xsl:variable name="intrinsicwidth"> <!-- This funny compound test works around a bug in XSLTC --> <xsl:choose> <xsl:when test="$use.extensions != 0 and $graphicsize.extension != 0"> <xsl:choose> <xsl:when test="function-available('simg:getWidth')"> <xsl:value-of select="simg:getWidth(simg:new($filename), $nominal.image.width)"/> </xsl:when> <xsl:when test="function-available('ximg:getWidth')"> <xsl:value-of select="ximg:getWidth(ximg:new($filename), $nominal.image.width)"/> </xsl:when> <xsl:otherwise> <xsl:value-of select="$nominal.image.width"/> </xsl:otherwise> </xsl:choose> </xsl:when> ... The simg:getWidth is the Saxon extension, and the ximg:getWidth is the Xalan extension. You could use those in a customization to adjust the width. Unfortunately, there is no such extension for xsltproc yet. -- Bob Stayton 400 Encinal Street Publications Architect Santa Cruz, CA 95060 Technical Publications voice: (831) 427-7796 The SCO Group fax: (831) 429-1887 email: bobs@sco.com
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