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<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:fo="http://www.w3.org/1999/XSL/Format"
xmlns:sverb="http://nwalsh.com/xslt/ext/com.nwalsh.saxon.Verbatim"
xmlns:xverb="com.nwalsh.xalan.Verbatim"
xmlns:lxslt="http://xml.apache.org/xslt"
xmlns:exsl="http://exslt.org/common"
exclude-result-prefixes="sverb xverb lxslt exsl"
version='1.0'>
<!-- Copyright (c) 2005 CrystalClear Software, Inc.
Subject to the Boost Software License, Version 1.0.
(See accompanying file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt)
-->
<xsl:import href="../../../tools/boostbook/xsl/fo.xsl" />
<!-- reset the default margin parameters -->
<xsl:param name="page.margin.bottom" select="'0.25in'"/>
<xsl:param name="page.margin.inner">
<xsl:choose>
<xsl:when test="$double.sided != 0">1.25in</xsl:when>
<xsl:otherwise>0.65in</xsl:otherwise>
</xsl:choose>
</xsl:param>
<xsl:param name="page.margin.outer">
<xsl:choose>
<xsl:when test="$double.sided != 0">0.75in</xsl:when>
<xsl:otherwise>0.65in</xsl:otherwise>
</xsl:choose>
</xsl:param>
<!-- with the above margins, we can fit 38 monospace characters per table cell.
If the margins are changed, set min-reduction to 100 and generate a new pdf. Then
count the number of characters that fit in a cell. Not the slickest method but it works.-->
<xsl:variable name="char-per-cell" select="38"/>
<!-- prevent reducing the font size too much. An 80% reduction
gives us a width of 48 characters per cell -->
<xsl:variable name="min-reduction" select="80"/>
<!-- recursive font-size reduction template -->
<!-- the string may span multiple lines.
break it up and check the length of each line.
adjust font size according to longest line -->
<xsl:template name="font-size-reduction">
<xsl:param name="inp" />
<xsl:param name="max">1</xsl:param>
<xsl:variable name="result">
<xsl:choose>
<!-- 
 is unicode line-feed character -->
<xsl:when test="contains($inp, '
')">
<xsl:variable name="str" select="substring-before($inp, '
')" />
<xsl:variable name="next" select="substring-after($inp, '
')" />
<xsl:variable name="n_max">
<xsl:choose>
<xsl:when test="string-length($str) > $char-per-cell and string-length($str) > $max">
<xsl:value-of select="string-length($str)" />
</xsl:when>
<xsl:otherwise>
<xsl:value-of select="$max" />
</xsl:otherwise>
</xsl:choose>
</xsl:variable>
<xsl:choose>
<xsl:when test="contains($next, '
')">
<xsl:call-template name="font-size-reduction">
<xsl:with-param name="inp" select="$next" />
<xsl:with-param name="max" select="$n_max" />
</xsl:call-template>
</xsl:when>
<xsl:otherwise>
<xsl:choose>
<xsl:when test="$n_max > $char-per-cell and $n_max > string-length($next)">
<!-- set size with next.len -->
<xsl:value-of select="round($char-per-cell div $n_max * 100)"/>
</xsl:when>
<xsl:when test="string-length($next) > $char-per-cell and string-length($next) > $n_max">
<!-- set size with n_max -->
<xsl:value-of select="round($char-per-cell div string-length($next) * 100)"/>
</xsl:when>
<xsl:otherwise>100</xsl:otherwise>
</xsl:choose>
</xsl:otherwise>
</xsl:choose>
</xsl:when>
<xsl:otherwise>
<xsl:choose>
<xsl:when test="string-length($inp) > $char-per-cell">
<!-- set size with inp.len -->
<xsl:value-of select="round($char-per-cell div string-length($inp) * 100)"/>
</xsl:when>
<xsl:otherwise>100</xsl:otherwise>
</xsl:choose>
</xsl:otherwise>
</xsl:choose>
</xsl:variable>
<!-- return either "result" or "min-reduction" -->
<xsl:choose>
<xsl:when test="$min-reduction > $result">
<xsl:value-of select="$min-reduction" />
</xsl:when>
<xsl:otherwise>
<xsl:value-of select="$result" />
</xsl:otherwise>
</xsl:choose>
</xsl:template>
<!-- this template was copied directly from docbook/boostbook xsl and modified
to calculate and resize monospace font to fit cells based on length of string -->
<xsl:template match="entry/screen">
<xsl:param name="suppress-numbers" select="'0'"/>
<xsl:variable name="id"><xsl:call-template name="object.id"/></xsl:variable>
<xsl:variable name="content">
<xsl:choose>
<xsl:when test="$suppress-numbers = '0'
and @linenumbering = 'numbered'
and $use.extensions != '0'
and $linenumbering.extension != '0'">
<xsl:call-template name="number.rtf.lines">
<xsl:with-param name="rtf">
<xsl:apply-templates/>
</xsl:with-param>
</xsl:call-template>
</xsl:when>
<xsl:otherwise>
<xsl:apply-templates/>
</xsl:otherwise>
</xsl:choose>
</xsl:variable>
<xsl:variable name="font_size">
<xsl:call-template name="font-size-reduction">
<xsl:with-param name="inp" select="." />
</xsl:call-template>
</xsl:variable>
<!-- write out the tag now that font size has been calculated -->
<xsl:choose>
<xsl:when test="$shade.verbatim != 0">
<fo:block id="{$id}"
white-space-collapse='false'
white-space-treatment='preserve'
linefeed-treatment='preserve'
xsl:use-attribute-sets="monospace.verbatim.properties shade.verbatim.style" font-size="{$font_size}%">
<xsl:choose>
<xsl:when test="$hyphenate.verbatim != 0 and function-available('exsl:node-set')">
<xsl:apply-templates select="exsl:node-set($content)" mode="hyphenate.verbatim"/>
</xsl:when>
<xsl:otherwise>
<xsl:copy-of select="$content"/>
</xsl:otherwise>
</xsl:choose>
</fo:block>
</xsl:when>
<xsl:otherwise>
<fo:block id="{$id}"
white-space-collapse='false'
white-space-treatment='preserve'
linefeed-treatment="preserve"
xsl:use-attribute-sets="monospace.verbatim.properties" font-size="{$font_size}%">
<xsl:choose>
<xsl:when test="$hyphenate.verbatim != 0 and function-available('exsl:node-set')">
<xsl:apply-templates select="exsl:node-set($content)" mode="hyphenate.verbatim"/>
</xsl:when>
<xsl:otherwise>
<xsl:copy-of select="$content"/>
</xsl:otherwise>
</xsl:choose>
</fo:block>
</xsl:otherwise>
</xsl:choose>
</xsl:template>
</xsl:stylesheet>
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