1 | <refentry xmlns="http://docbook.org/ns/docbook"
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2 | xmlns:xlink="http://www.w3.org/1999/xlink"
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3 | xmlns:xi="http://www.w3.org/2001/XInclude"
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4 | xmlns:src="http://nwalsh.com/xmlns/litprog/fragment"
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5 | xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
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6 | version="5.0" xml:id="footer.column.widths">
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7 | <refmeta>
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8 | <refentrytitle>footer.column.widths</refentrytitle>
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9 | <refmiscinfo class="other" otherclass="datatype">string</refmiscinfo>
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10 | </refmeta>
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11 | <refnamediv>
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12 | <refname>footer.column.widths</refname>
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13 | <refpurpose>Specify relative widths of footer areas</refpurpose>
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14 | </refnamediv>
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15 |
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16 | <refsynopsisdiv><src:fragment xml:id="footer.column.widths.frag">
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17 | <xsl:param name="footer.column.widths">1 1 1</xsl:param>
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18 | </src:fragment></refsynopsisdiv>
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19 |
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20 | <refsection><info><title>Description</title></info>
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21 |
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22 | <para>Page footers in print output use a three column table
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23 | to position text at the left, center, and right side of
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24 | the footer on the page.
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25 | This parameter lets you specify the relative sizes of the
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26 | three columns. The default value is
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27 | "1 1 1".</para>
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28 |
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29 | <para>The parameter value must be three numbers, separated
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30 | by white space. The first number represents the relative
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31 | width of the inside footer for
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32 | double-sided output. The second number is the relative
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33 | width of the center footer. The third number is the
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34 | relative width of the outside footer for
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35 | double-sided output.
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36 | </para>
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37 | <para>For single-sided output, the first number is the
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38 | relative width of left footer for left-to-right
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39 | text direction, or the right footer for right-to-left
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40 | text direction.
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41 | The third number is the
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42 | relative width of right footer for left-to-right
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43 | text direction, or the left footer for right-to-left
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44 | text direction.</para>
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45 |
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46 | <para>The numbers are used to specify the column widths
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47 | for the table that makes up the footer area.
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48 | In the FO output, this looks like:
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49 | </para>
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50 |
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51 | <programlisting>
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52 | <fo:table-column column-number="1"
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53 | column-width="proportional-column-width(1)"/>
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54 | </programlisting>
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55 |
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56 | <para>
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57 | The <literal>proportional-column-width()</literal>
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58 | function computes a column width by dividing its
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59 | argument by the total of the arguments for all the columns, and
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60 | then multiplying the result by the width of the whole table
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61 | (assuming all the column specs use the function).
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62 | Its argument can be any positive integer or floating point number.
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63 | Zero is an acceptable value, although some FO processors
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64 | may warn about it, in which case using a very small number might
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65 | be more satisfactory.
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66 | </para>
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67 |
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68 | <para>For example, the value "1 2 1" means the center
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69 | footer should have twice the width of the other areas.
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70 | A value of "0 0 1" means the entire footer area
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71 | is reserved for the right (or outside) footer text.
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72 | Note that to keep the center area centered on
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73 | the page, the left and right values must be
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74 | the same. A specification like "1 2 3" means the
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75 | center area is no longer centered on the page
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76 | since the right area is three times the width of the left area.
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77 | </para>
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78 |
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79 | </refsection>
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80 | </refentry>
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