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155 lines
3.5 KiB
Groff
155 lines
3.5 KiB
Groff
.\" -*- nroff -*-
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.ie t .ds tx T\h'-.1667m'\v'.224m'E\v'-.224m'\h'-.125m'X
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.el .ds tx TeX
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.\" Like TP, but if specified indent is more than half
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.\" the current line-length - indent, use the default indent.
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.de Tp
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.ie \\n(.$=0:((0\\$1)*2u>(\\n(.lu-\\n(.iu)) .TP
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.el .TP "\\$1"
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..
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.TH GRODVI @MAN1EXT@ "@MDATE@" "Groff Version @VERSION@"
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.SH NAME
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grodvi \- convert groff output to TeX dvi format
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.SH SYNOPSIS
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.B grodvi
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[
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.B \-dv
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] [
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.BI \-w n
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] [
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.BI \-F dir
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] [
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.IR files \|.\|.\|.
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]
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.SH DESCRIPTION
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.B grodvi
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is a driver for
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.B groff
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that produces \*(tx dvi format.
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Normally it should be run by
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.BR groff\ \-Tdvi .
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This will run
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.BR @g@troff\ \-Tdvi ;
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it will also input the macros
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.BR @MACRODIR@/tmac.dvi ;
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if the input is being preprocessed with
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.B @g@eqn
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it will also input
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.BR @FONTDIR@/devdvi/eqnchar .
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.LP
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The dvi file generated by
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.B grodvi
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can be printed by any correctly-written dvi driver.
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The troff drawing primitives are implemented
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using the tpic version 2 specials.
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If the driver does not support these, the
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.B \eD
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commands will not produce any output.
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.LP
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There is an additional drawing command available:
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.TP
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.BI \eD'R\ dh\ dv '
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Draw a rule (solid black rectangle), with one corner
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at the current position, and the diagonally opposite corner
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at the current position
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.RI +( dh , dv ).
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Afterwards the current position will be at the opposite corner. This
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produces a rule in the dvi file and so can be printed even with a
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driver that does not support the tpic specials unlike the other
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.B \eD
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commands.
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.LP
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The groff command
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.BI \eX' anything '
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is translated into the same command in the dvi file as would be
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produced by
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.BI \especial{ anything }
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in \*(tx;
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.I anything may not contain a newline.
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.LP
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Font files for
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.B grodvi
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can be created from tfm files using
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.BR tfmtodit (@MAN1EXT@).
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The font description file should contain the following
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additional commands:
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.Tp \w'\fBinternalname'u+2n
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.BI internalname\ name
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The name of the tfm file (without the
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.B .tfm
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extension) is
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.IR name .
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.TP
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.BI checksum\ n
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The checksum in the tfm file is
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.IR n .
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.TP
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.BI designsize\ n
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The designsize in the tfm file is
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.IR n .
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.LP
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These are automatically generated by
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.B tfmtodit.
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.LP
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In
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.B troff
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the
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.B \eN
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escape sequence can be used to access characters by their position
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in the corresponding tfm file;
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all characters in the tfm file can be accessed this way.
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.SH OPTIONS
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.TP
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.B \-d
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Do not use tpic specials to implement drawing commands.
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Horizontal and vertical lines will be implemented by rules.
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Other drawing commands will be ignored.
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.TP
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.B \-v
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Print the version number.
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.TP
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.BI \-w n
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Set the default line thickness to
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.I n
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thousandths of an em.
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.TP
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.BI \-F dir
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Search directory
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.IB dir /devdvi
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for font and device description files.
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.SH FILES
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.TP
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.B @FONTDIR@/devdvi/DESC
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Device description file.
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.TP
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.B @FONTDIR@/devdvi/ F
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Font description file for font
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.IR F .
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.TP
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.B @MACRODIR@/tmac.dvi
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Macros for use with
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.BR grodvi .
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.SH BUGS
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Dvi files produced by
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.B grodvi
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use a different resolution (57816 units per inch) to those produced by
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\*(tx.
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Incorrectly written drivers which assume the resolution used by \*(tx,
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rather than using the resolution specified in the dvi file will not
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work with grodvi.
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.LP
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When using the
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.B \-d
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option with boxed tables,
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vertical and horizontal lines can sometimes protrude by one pixel.
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This is a consequence of the way \*(tx requires that the heights
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and widths of rules be rounded.
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.SH "SEE ALSO"
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.BR tfmtodit (@MAN1EXT@),
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.BR groff (@MAN1EXT@),
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.BR @g@troff (@MAN1EXT@),
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.BR @g@eqn (@MAN1EXT@),
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.BR groff_out (@MAN5EXT@),
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.BR groff_font (@MAN5EXT@),
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.BR groff_char (@MAN7EXT@)
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