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Diffstat (limited to 'src/utils/hpftodit/hpftodit.man')
| -rw-r--r-- | src/utils/hpftodit/hpftodit.man | 202 |
1 files changed, 167 insertions, 35 deletions
diff --git a/src/utils/hpftodit/hpftodit.man b/src/utils/hpftodit/hpftodit.man index c069752b..b914db9e 100644 --- a/src/utils/hpftodit/hpftodit.man +++ b/src/utils/hpftodit/hpftodit.man @@ -1,3 +1,4 @@ +.tr ~ .ig Copyright (C) 1994-2000, 2001, 2003 Free Software Foundation, Inc. @@ -23,12 +24,16 @@ the original English. .el .TP "\\$1" .. .TH HPFTODIT @MAN1EXT@ "@MDATE@" "Groff Version @VERSION@" +.\" -------------------------------------------------------------------------- .SH NAME +.\" -------------------------------------------------------------------------- hpftodit \- create font description files for use with groff \-Tlj4 +.\" -------------------------------------------------------------------------- .SH SYNOPSIS +.\" -------------------------------------------------------------------------- .B hpftodit [ -.B \-sv +.B \-adqsv ] [ .BI \-i n @@ -39,33 +44,53 @@ hpftodit \- create font description files for use with groff \-Tlj4 .PP It is possible to have whitespace between the .B \-i -command line option and its parameter. +option and its parameter. +.\" -------------------------------------------------------------------------- .SH DESCRIPTION +.\" -------------------------------------------------------------------------- .B hpftodit -creates a font file for use with -.B -groff \-Tlj4\fR -from an HP tagged font metric file. +creates a font file for use with an HP LaserJet printer with +.BR "groff \-Tlj4" , +using data from an HP tagged font metric (TFM) file. .I tfm_file -is the name of the tagged font metric file for the font. +is the name of the tagged font metric file for the font; Intellifont and +TrueType TFM files are supported, but symbol set TFM files are not. .I map_file -is a file giving the groff names for characters in the font; -this file should consist of a sequence of lines of the form: +is a file giving the groff names for characters in the font; this file +should consist of a sequence of lines of the form: .IP .I -n c1 c2 \fR.\|.\|. +m u c1 c2 \fR.\|.\|. .LP where -.I n +.I m is a decimal integer giving the MSL number of the character, +.I u +is a hexadecimal integer giving the Unicode value of the character, and .IR c1 , .IR c2 ,.\|.\|. are the groff names of the character. +The values can be separated by any whitespace; the Unicode value must +use uppercase digits A\^\(en\^F, and must be without a leading `0x', `u', or +\&`U+'. +The name for a glyph without a groff name may be given as +.RI u XXXX +if the glyph corresponds to a Unicode value, or as an unnamed glyph +`\-\^\-\^\-'. +If the given Unicode value is in the Private Use Area +(0xE000\^\(en\^0xF8FF), the glyph is included as an unnamed glyph. +Refer to +.BR groff_diff (@MAN1EXT@) +for additional information about unnamed glyphs and how to access them. +.LP .I font is the name of the groff font file. The groff font file is written to -.IR font . +.IR font ; +if +.I font +is specified as `\-', the output is written to the standard output. .LP The .B \-s @@ -75,7 +100,7 @@ option should be given if the font is special if .B troff should search it whenever -a character is not found in the current font.) +a character is not found in the current font). If the font is special, it should be listed in the .B fonts @@ -93,28 +118,97 @@ a left italic correction and a subscript correction for each character (the significance of these parameters is explained in .BR groff_font (@MAN5EXT@)). +.LP +The metrics generated by +.B hpftodit +assume that the DESC file contains values of 1200 for res and 6350 for +unitwidth (or any combination (e.g., 2400 and 3175) for which +res~\(mu~unitwidth~=~7\|620\|000). +Although HP PCL 5 LaserJet printers support an internal resolution of +7200 units per inch, they use a 16-bit signed integer for cursor +positioning; if +.B devlj4 +is to support U.S. ledger paper (11\(sd~\(mu~17\(sd), the maximum usable +resolution is 32\|767~/~17, or 1927, units per inch, which rounds down to +1200 units per inch. +If the largest required paper size is less (e.g., 8.5\(sd~\(mu~11\(sd or +A5), a greater resolution (and lesser unitwidth) can be specified. +.\" -------------------------------------------------------------------------- .SH OPTIONS +.\" -------------------------------------------------------------------------- +.TP +.B \-a +Include characters in the TFM file that do not have groff names and are +not included in the map file. +A glyph with corresponding Unicode value is given the name +.RI u XXXX ; +a glyph without a Unicode value is included as an unnamed glyph +`\-\^\-\^\-'. +A glyph with a Unicode value in the Private Use Area (0xE000\^\(en\^0xF8FF) +also is included as an unnamed glyph. +This option has no effect on Unicode-named or unnamed glyphs that are +specified in the map file. +.IP +This option provides a simple means of adding Unicode-named and unnamed +glyphs to a font without including them in the map file, but it affords +little control over which glyphs are placed in a regular font and which +are placed in a special font. +Although the presence or absence of the +.B \-s +option has some effect on which glyphs are included, it isn't very +selective\(emmany glyphs are placed in both regular and special fonts. +.\" -------------------------------------------------------------------------- +.TP +.B \-d +Dump information about the TFM file to the standard output; this option +can be useful for ensuring that a TFM file is a proper match for a font, +and that the contents of the TFM file are suitable. +The information includes the values of important TFM tags, and a listing +(by MSL number for Intellifont TFM files or by Unicode value for +TrueType TFM files) of the glyphs included in the TFM file. +The unit of measure `DU' for some tags indicates design units; there are +8782 design units per em for Intellifont fonts, and 2048 design units +per em for TrueType fonts. +Note that the accessibility of a glyph depends on its inclusion in a +symbol set; some TFM files list many glyphs but only a few symbol sets. +.IP +With this option, +.I map_file +and +.I font +are not required, and are ignored if given. +.\" -------------------------------------------------------------------------- +.TP +.B \-q +Suppress warnings about characters in the map file that were not found +in the TFM file. +Warnings never are given for unnamed glyphs or by glyphs named by their +Unicode values. +This option is useful when sending the output of +.B hpftodit +to the standard output. +.\" -------------------------------------------------------------------------- .TP .B \-v Print the version number. +.\" -------------------------------------------------------------------------- .TP .B \-s The font is special. -The effect of this option is to add the +This option adds the .B special -command to the font file. +command to the font file, and affects the HP symbol sets that are +searched for each glyph. +.\" -------------------------------------------------------------------------- .TP .BI \-i n -Generate an italic correction for each character so that -the character's width plus the character's italic correction -is equal to +Generate an italic correction for each character so that the character's +width plus the character's italic correction is equal to .I n -design units -plus the amount by which the right edge of the character's bounding -is to the right of the character's origin. -If this would result in a negative italic correction, use a zero -italic correction instead. -There are 8782 design units per em for Intellifont fonts. +thousandths of an em plus the amount by which the right edge of the character's +bounding is to the right of the character's origin. +If this would result in a negative italic correction, use a zero italic +correction instead. .IP Also generate a subscript correction equal to the product of the tangent of the slant of the font and @@ -126,13 +220,15 @@ instead. Also generate a left italic correction for each character equal to .I n -design units -plus the amount by which the left edge of the character's bounding box -is to the left of the character's origin. +thousandths of an em plus the amount by which the left edge of the +character's bounding box is to the left of the character's origin. The left italic correction may be negative. .IP -This option is normally needed only with italic (or oblique) fonts. +This option normally is needed only with italic or oblique fonts; +a value of 50 (0.05 em) usually is a reasonable choice. +.\" -------------------------------------------------------------------------- .SH FILES +.\" -------------------------------------------------------------------------- .Tp \w'\fB@FONTDIR@/devlj4/DESC'u+2n .B @FONTDIR@/devlj4/DESC Device description file. @@ -140,17 +236,53 @@ Device description file. .BI @FONTDIR@/devlj4/ F Font description file for font .IR F . -.SH BUGS +.\" -------------------------------------------------------------------------- +.SH LIMITATIONS +.\" -------------------------------------------------------------------------- +Although +.B hpftodit +can read TrueType TFM files, most of the HP-supplied TFM files for +TrueType fonts support relatively few glyphs and include little, if any, +kerning information. +When the HP LaserJet 4 printer was first introduced, most of the +internal scalable fonts were Agfa Intellifont. +The TFM files provided for these fonts supported 600+ glyphs and +contained extensive lists of kern pairs. +.LP +All scalable internal fonts on LaserJet printers introduced since +approximately 1996 have been TrueType. +With most developers using other means of obtaining font metrics by that +time, support for new TFM files was very limited. +The TFM files provided for the TrueType fonts support only the Latin 2 +(ISO 8859-2) symbol set, and include no kerning information; +consequently, they are of little value for any but the most rudimentary +documents. .LP -This program was written without the benefit of complete, official -documentation on the tagged font metric format. -It is therefore likely that it will fail to work on tfm files that are -dissimilar to those for the internal fonts on the Laserjet 4, -with which it was tested. +Because the Intellifont TFM files contain considerably more information, +they generally are preferable to the TrueType TFM files even for the +TrueType fonts in the newer printers. +The metrics for the TrueType fonts are very close, though not identical, +to those for the earlier Intellifont fonts of the same names. +Although most output using the Intellifont metrics with the newer +printers is quite acceptable, a few glyphs may fail to print as expected. .LP -TrueType tfm files are not supported. +At the time HP last supported TFM files, only Version 1 of the Unicode +standard was available. +Consequently, many glyphs lacking assigned code points were assigned by +HP to the Private Use Area (PUA). +Later versions of the Unicode standard included code points outside the +PUA for many of these glyphs. +The HP-supplied TrueType TFM files use the PUA assignments; +TFM files generated from more recent TrueType font files require the +later Unicode values to access the same glyphs. +Consequently, two different mapping files may be required: one for the +HP-supplied TFM files, and one for more recent TFM files. +.\" -------------------------------------------------------------------------- .SH "SEE ALSO" +.\" -------------------------------------------------------------------------- +.ad 0 .BR groff (@MAN1EXT@), +.BR groff_diff (@MAN1EXT@), .BR grolj4 (@MAN1EXT@), .BR groff_font (@MAN5EXT@) . |