81 lines
2.9 KiB
XML
81 lines
2.9 KiB
XML
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<refentry xmlns="http://docbook.org/ns/docbook"
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xmlns:xlink="http://www.w3.org/1999/xlink"
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xmlns:xi="http://www.w3.org/2001/XInclude"
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xmlns:src="http://nwalsh.com/xmlns/litprog/fragment"
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xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
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version="5.0" xml:id="footer.column.widths">
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<refmeta>
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<refentrytitle>footer.column.widths</refentrytitle>
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<refmiscinfo class="other" otherclass="datatype">string</refmiscinfo>
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</refmeta>
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<refnamediv>
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<refname>footer.column.widths</refname>
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<refpurpose>Specify relative widths of footer areas</refpurpose>
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</refnamediv>
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<refsynopsisdiv><src:fragment xml:id="footer.column.widths.frag">
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<xsl:param name="footer.column.widths">1 1 1</xsl:param>
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</src:fragment></refsynopsisdiv>
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<refsection><info><title>Description</title></info>
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<para>Page footers in print output use a three column table
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to position text at the left, center, and right side of
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the footer on the page.
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This parameter lets you specify the relative sizes of the
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three columns. The default value is
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"1 1 1".</para>
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<para>The parameter value must be three numbers, separated
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by white space. The first number represents the relative
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width of the inside footer for
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double-sided output. The second number is the relative
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width of the center footer. The third number is the
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relative width of the outside footer for
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double-sided output.
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</para>
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<para>For single-sided output, the first number is the
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relative width of left footer for left-to-right
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text direction, or the right footer for right-to-left
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text direction.
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The third number is the
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relative width of right footer for left-to-right
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text direction, or the left footer for right-to-left
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text direction.</para>
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<para>The numbers are used to specify the column widths
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for the table that makes up the footer area.
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In the FO output, this looks like:
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</para>
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<programlisting>
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<fo:table-column column-number="1"
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column-width="proportional-column-width(1)"/>
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</programlisting>
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<para>
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The <literal>proportional-column-width()</literal>
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function computes a column width by dividing its
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argument by the total of the arguments for all the columns, and
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then multiplying the result by the width of the whole table
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(assuming all the column specs use the function).
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Its argument can be any positive integer or floating point number.
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Zero is an acceptable value, although some FO processors
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may warn about it, in which case using a very small number might
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be more satisfactory.
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</para>
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<para>For example, the value "1 2 1" means the center
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footer should have twice the width of the other areas.
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A value of "0 0 1" means the entire footer area
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is reserved for the right (or outside) footer text.
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Note that to keep the center area centered on
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the page, the left and right values must be
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the same. A specification like "1 2 3" means the
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center area is no longer centered on the page
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since the right area is three times the width of the left area.
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</para>
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</refsection>
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</refentry>
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