mirror of https://github.com/texmacs/doc.git
314 lines
12 KiB
Plaintext
314 lines
12 KiB
Plaintext
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<TeXmacs|1.0.3.11>
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<style|tmdoc>
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<\body>
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<tmdoc-title|Table layout>
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The environment variables for tables can be subdivided in variables
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(prefixed by <src-var|table->) which apply to the whole table and those
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(prefixed by <src-var|cell->) which apply to individual cells. Whereas
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usual environment variables are set with <markup|assign> and <markup|with>,
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the tabular environment variables are rather set with the
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<hyper-link|<markup|tformat> primitive|../regular/prim-table.en.tm>. This
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makes it possible to apply certain settings to any rectangular subtable of
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the entire table and in particular to rows or columns. For more details,
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see the <hyper-link|documentation|../regular/prim-table.en.tm#table-twith>
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of the <markup|twith> and <markup|cwith> primitives.
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<paragraph*|Layout of the table as a whole>
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<\explain>
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<var-val|table-width|>
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<var-val|table-height|><explain-synopsis|hint for table dimensions>
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<|explain>
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These parameters indicate a hint for the dimensions of the table. The
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<src-var|table-hmode> and <src-var|table-vmode> variables determine how
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to take into account these settings.
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</explain>
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<\explain>
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<var-val|table-hmode|>
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<var-val|table-vmode|><explain-synopsis|determination of table
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dimensions>
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<|explain>
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These parameters specify how to determine the dimensions of the table. At
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the moment, the values of <src-var|table-hmode> and <src-var|table-vmode>
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are actually ignored and <src-var|table-width> and <src-var|table-height>
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are interpreted as the minimal width and height of the table.
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</explain>
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<\explain>
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<var-val|table-halign|l>
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<var-val|table-valign|f><explain-synopsis|alignment inside text>
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<|explain>
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These parameters determine how the table should be aligned in the
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surrounding text. Possible values for <src-var|table-halign> are
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<verbatim|l> (left), <verbatim|c> (center) and <verbatim|r> (right), and
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possible values for <src-var|table-valign> are <verbatim|t> (top),
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<verbatim|f> (centered at fraction bar height), <verbatim|c> (center) and
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<verbatim|b> (bottom).
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In addition to the above values, the alignment can take place with
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respect to the baselines of particular cells. Such values for
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<src-var|table-halign> are <verbatim|L> (align <abbr|w.r.t.> the left
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column), <verbatim|C> (align <abbr|w.r.t.> the middle column),
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<verbatim|R> (align <abbr|w.r.t.> the right column) and <verbatim|O>
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(align <abbr|w.r.t.> the priviledged origin column
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<src-var|table-col-origin>). Similarly, <src-var|table-halign> may take
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the additional values <verbatim|T> (align <abbr|w.r.t.> the top row),
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<verbatim|C> (align <abbr|w.r.t.> the middle row), <verbatim|B> (align
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<abbr|w.r.t.> the bottom row) and <verbatim|O> (align <abbr|w.r.t.> the
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priviledged origin row <src-var|table-row-origin>).
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</explain>
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<\explain>
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<var-val|table-row-origin|0>
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<var-val|table-col-origin|0><explain-synopsis|priviledged cell>
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<|explain>
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Table coordinates of an priviledged ``origin cell'' which may be used for
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aligning the table in the surrounding text (see above).
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</explain>
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<\explain>
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<var-val|table-lsep|0fn>
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<var-val|table-rsep|0fn>
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<var-val|table-bsep|0fn>
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<var-val|table-tsep|0fn><explain-synopsis|padding around table>
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<|explain>
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Padding around the table (in addition to the padding of individual
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cells).
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</explain>
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<\explain>
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<var-val|table-lborder|0ln>
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<var-val|table-rborder|0ln>
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<var-val|table-bborder|0ln>
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<var-val|table-tborder|0ln><explain-synopsis|border around table>
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<|explain>
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Border width for the table (in addition to borders of the individual
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cells).
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</explain>
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<\explain>
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<var-val|table-hyphen|n><explain-synopsis|allow for hyphenation?>
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<|explain>
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A flag which specifies whether page breaks may occur at the middle of
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rows in the table. When <src-var|table-hyphen> is set to <verbatim|y>,
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then such page breaks may only occur when
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<\enumerate>
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<item> The table is not surrounded by other markup in the same
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paragraph.
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<item>The rows whether the page break occurs has no borders.
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</enumerate>
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An example of a tabular environment which allows for page breaks is
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<markup|eqnarray*>.
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</explain>
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<\explain>
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<var-val|table-min-rows|>
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<var-val|table-min-cols|>
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<var-val|table-max-rows|>
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<var-val|table-max-cols|><explain-synopsis|constraints on the table's
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size>
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<|explain>
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It is possible to specify a minimal and maximal numbers of rows or
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columns for the table. Such settings constraint the behaviour of the
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editor for operations which may modify the size of the table (like the
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insertion and deletion of rows and columns). This is particularly useful
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for tabular macros. For instance, <src-var|table-min-columns> and
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<src-var|table-max-columns> are both set to <with|mode|math|3> for the
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<markup|eqnarray*> environment.
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</explain>
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<paragraph*|Layout of the individual cells>
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<\explain>
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<var-val|cell-background|><explain-synopsis|background color>
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<|explain>
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A background color for the cell.
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</explain>
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<\explain>
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<var-val|cell-width|>
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<var-val|cell-height|><explain-synopsis|hint for cell dimensions>
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<|explain>
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Hints for the width and the height of the cell. The real width and height
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also depend on the modes <src-var|cell-hmode> and <src-var|cell-vmode>,
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possible filling (see <src-var|cell-hpart> and <src-var|cell-vpart>
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below), and, of course, on the dimensions of other cells in the same row
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or column.
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</explain>
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<\explain>
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<var-val|cell-hpart|>
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<var-val|cell-vpart|><explain-synopsis|fill part of unused space>
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<|explain>
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When the sum <with|mode|math|s> of the widths of all columns in a table
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is smaller than the width <with|mode|math|w> of the table itself, then it
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should be specified what should be done with the unused space. The
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<src-var|cell-hpart> parameter specifies a part in the unusued space
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which will be taken by a particular cell. The horizontal part taken by a
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column is the maximum of the horizontal parts of its composing cells. Now
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let <with|mode|math|p<rsub|i>> the so determined part for each column
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(<with|mode|math|i\<in\>{1,\<ldots\>,n}>). Then the extra horizontal
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space which will be distributed to this column is
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<with|mode|math|p<rsub|i>*(w-s)/(p<rsub|1>+\<cdots\>+p<rsub|n>)>. A
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similar computation determines the extra vertical space which is
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distributed to each row.
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</explain>
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<\explain>
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<var-val|cell-hmode|exact>
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<var-val|cell-vmode|exact><explain-synopsis|determination of cell
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dimensions>
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<|explain>
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These parameters specify how to determine the width and the height of the
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cell. If <src-var|cell-hmode> is <verbatim|exact>, then the width is
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given by <src-var|cell-width>. If <src-var|cell-hmode> is <verbatim|min>
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or <verbatim|max>, then the width is the minimul <abbr|resp.> maximum of
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<src-var|cell-width> and the width of the content. The height is
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determined similarly.
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</explain>
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<\explain>
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<var-val|cell-halign|l>
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<var-val|cell-valign|B><explain-synopsis|cell alignment>
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<|explain>
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These parameters determine the horizontal and vertical alignment of the
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cell. Possible values of <src-var|cell-halign> are <verbatim|l> (left),
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<verbatim|c> (center), <verbatim|r> (right), <verbatim|.> (decimal dot),
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<verbatim|,> (decimal comma) and <verbatim|R> (vertical baseline).
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Possible values of <src-var|cell-valign> are <verbatim|t> (top),
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<verbatim|c> (center), <verbatim|b> (bottom) and <verbatim|B> (baseline).
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</explain>
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<\explain>
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<var-val|cell-lsep|0fn>
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<var-val|cell-rsep|0fn>
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<var-val|cell-bsep|0fn>
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<var-val|cell-tsep|0fn><explain-synopsis|cell padding>
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<|explain>
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The amount of padding around the cell (at the left, right, bottom and
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top).
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</explain>
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<\explain>
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<var-val|cell-lborder|0ln>
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<var-val|cell-rborder|0ln>
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<var-val|cell-bborder|0ln>
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<var-val|cell-tborder|0ln><explain-synopsis|cell borders>
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<|explain>
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The borders of the cell (at the left, right, bottom and top). The
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displayed border between cells <with|mode|math|T<rsub|i,j>> and
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<with|mode|math|T<rsub|i,j+1>> at positions <with|mode|math|(i,j)> and
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<with|mode|math|(i,j+1)> is the maximum of the borders between the right
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border of <with|mode|math|T<rsub|i,j>> and the left border of
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<with|mode|math|T<rsub|i,j+1>>. Similarly, the displayed border between
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cells <with|mode|math|T<rsub|i,j>> and <with|mode|math|T<rsub|i+1,j>> is
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the maximum of the bottom border of <with|mode|math|T<rsub|i,j>> and the
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top border of <with|mode|math|T<rsub|i+1,j>>.
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</explain>
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<\explain>
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<var-val|cell-vcorrect|a><explain-synopsis|vertical correction of text>
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<|explain>
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As described above, the dimensions and the alignment of a cell may depend
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on the dimensions of its content. When cells contain text boxes, the
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vertical bounding boxes of such text may vary as a function of the text
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(the letter ``k'' <abbr|resp.> ``y'' ascends <abbr|resp.> descends
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further than ``x''). Such differences sometimes leads to unwanted,
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non-uniform results. The vertical cell correction allows for a more
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uniform treatment of text of the same font, by descending and/or
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ascending the bounding boxes to a level which only depends on the font.
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Possible values for <src-var|cell-vcorrect> are <verbatim|n> (no vertical
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correction), <verbatim|b> (vertical correction of the bottom),
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<verbatim|t> (vertical correction of the top), <verbatim|a> (vertical
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correction of bottom and the top).
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</explain>
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<\explain>
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<var-val|cell-hyphen|n><explain-synopsis|allow for hyphenation inside
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cells>
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<|explain>
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By default, the cells contain inline content which is not hyphenated. By
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selecting <menu|Table|Special cell properties|Hyphenation|Multi-paragraph>,
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the cell contents becomes multi-paragraph. In that case,
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<src-var|cell-hyphen> determines how this content is hyphenated. Possible
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values are <verbatim|n> (disable line breaking) and <verbatim|b>,
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<verbatim|c> and <verbatim|t> (enable line breaking and align at the
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bottom, center <abbr|resp.> top line).
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</explain>
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<\explain>
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<var-val|cell-row-span|1>
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<var-val|cell-col-span|1><explain-synopsis|span of a cell>
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<|explain>
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Certain cells in a table are allowed to span over other cells at their
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right or below them. The <src-var|cell-row-span> and
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<src-var|cell-col-span> specify the row span and column span of the cell.
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</explain>
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<\explain>
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<var-val|cell-decoration|><explain-synopsis|decorating table for cell>
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<|explain>
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This environment variable may contain a decorating table for the cell.
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Such a decoration enlarges the table with extra columns and cells. The
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<markup|tmarker> primitive determines the location of the original
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decorated cell and its surroundings in the enlarged table are filled up
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with the decorations. Cell decorations are not really used at present and
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may disappear in future versions of <TeXmacs>.
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</explain>
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<\explain>
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<var-val|cell-orientation|portrait><explain-synopsis|orientation of cell>
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<|explain>
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Other orientations for cells than <verbatim|portrait> have not yet been
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implemented.
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</explain>
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<\explain>
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<var-val|cell-row-nr|1>
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<var-val|cell-col-nr|1><explain-synopsis|current cell position>
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<|explain>
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In the future, these environment variables should contain the current
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cell position during the typesetting process.
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</explain>
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<tmdoc-copyright|2004|Joris van der Hoeven>
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<tmdoc-license|Permission is granted to copy, distribute and/or modify this
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document under the terms of the GNU Free Documentation License, Version 1.1
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or any later version published by the Free Software Foundation; with no
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Invariant Sections, with no Front-Cover Texts, and with no Back-Cover
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Texts. A copy of the license is included in the section entitled "GNU Free
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Documentation License".>
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</body>
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