Hi all,
for some time I try to generate small PDF documents that have no
embedded fonts and do not reencoding fonts. In the meantime I was quite
successful and I wanted to share my insights with others. Comments are
welcome!
I generated new ec-encoded virtual fonts for the standard Adobe fonts
that are based on 8a-encoded raw fonts. In other words, I used afm2tfm
with the TeX encoding set to ec and the postscript encoding set to 8a.
(See below for a batch file that does this job). Then I wrote a small
type script (smallpdf.tex) that defines the necessary font synonymes
(see below). Finally I wrote a map file (smallpdf.map) that prevents the
8a-encoded raw fonts from being embedded or reencoded (see below).
After all these preparations I can now generate PDF documents that use
the builtin fonts. The following example generates a PDF document that
is only 3389 bytes long whereas the corresponding document with
embedding and reencoding is 112966 bytes long! Of course these numbers
are not representative because the document contains only a few lines of
text but uses 12 different fonts.
Finally two issues remain:
1. In which situations is the call of \usetypescript[adobekb][ec]
necessary. I had the impression that it is only needed if the document
contains characters that are not containted in the builtin fonts.
2. I would also like to use the builtin symbol character sets Zapf
Dingbats and Zapf Chancery. Adam Lindsay already showed how Zapf
Dingbats can be used without embedding (cf.
http://homepage.mac.com/atl/tex/). But is there also a possibility to
use it without reencoding?
Thanks for your attention,
--Stefan
Test document
===
\enableregime[il1]
\setupencoding[default=ec]
\setupoutput[pdftex]
\pdfoptionpdfminorversion 4
\usetypescriptfile[smallpdf.tex]
\usetypescript[adobekb][ec] % Seems to be necessary to access characters
that are not contained in the builtin fonts.
\usetypescript[postscript][ec]
\setupbodyfont[postscript,sans,20pt]
\mainlanguage[de]
\setupheadertexts[]
\def\Show{This is a test. \quotedblbase äöüßÄÖÜ\quotedblleft}
\def\ShowVariants{\Show\par{\bf\Show}\par{\it\Show}\par{\bi\Show}\par}
\starttext\pdfmapfile{+smallpdf.map}
{\ss Helvetica\par\ShowVariants}
{\rm Times-Roman\par\ShowVariants}
{\tt Courier\par\ShowVariants}
\stoptext
Batch file for generating the fonts
# 1: directory that contains the afm-files.
# 2: font vendor (eg. adobe)
# 3: font collection (eg. times, helvetic, or courier)
if [ $# -ne 3 ] ; then
echo Usage: $0 afm-dir vendor collection 12
exit 1
fi
vfDir=fonts/vf/$2/$3/
tfmDir=fonts/tfm/$2/$3/
mapDir=fonts/map/pdftex/context/
mapFile=8a-$2-$3.map
rm $mapFile
for datei in `find $1/$2/$3 -name *.afm` ; do
name=`basename $datei .afm`
echo processing $name
afm2tfm $name -v ec-$name -t ec.enc -p 8a.enc 8a-raw-$name $mapFile
vptovf ec-$name.vpl ec-$name.vf ec-$name.tfm
done
mkdir -p $vfDir $tfmDir $mapDir
mv *.vf $vfDir
mv *.tfm $tfmDir
rm *.vpl
mv *.map $mapDir
smallpdf.tex
=
% Use of virtual fonts that are based on 8a encoded fonts.
\starttypescript [sans] [helvetica] [texnansi,ec,8r]
\definefontsynonym [Helvetica] [\typefaceencoding-phvr8a]
[encoding=\typefaceencoding]
\definefontsynonym [Helvetica-Bold][\typefaceencoding-phvb8a]
[encoding=\typefaceencoding]
\definefontsynonym [Helvetica-BoldOblique]
[\typefaceencoding-phvbo8a][encoding=\typefaceencoding]
\definefontsynonym [Helvetica-Oblique]
[\typefaceencoding-phvro8a][encoding=\typefaceencoding]
\stoptypescript
\starttypescript [serif] [times] [texnansi,ec,8r]
\definefontsynonym [Times-Roman] [\typefaceencoding-ptmr8a]
[encoding=\typefaceencoding]
\definefontsynonym [Times-Bold] [\typefaceencoding-ptmb8a]
[encoding=\typefaceencoding]
\definefontsynonym [Times-BoldItalic]
[\typefaceencoding-ptmbi8a][encoding=\typefaceencoding]
\definefontsynonym [Times-Italic]
[\typefaceencoding-ptmri8a][encoding=\typefaceencoding]
\stoptypescript
\starttypescript [mono] [courier] [texnansi,ec,8r]
\definefontsynonym [Courier] [\typefaceencoding-pcrr8a]
[encoding=\typefaceencoding]
\definefontsynonym [Courier-Bold][\typefaceencoding-pcrb8a]
[encoding=\typefaceencoding]
\definefontsynonym [Courier-BoldOblique]
[\typefaceencoding-pcrbo8a][encoding=\typefaceencoding]
\definefontsynonym [Courier-Oblique]
[\typefaceencoding-pcrro8a][encoding=\typefaceencoding]
\stoptypescript
smallpdf.map
=
8a-raw-phvr8a Helvetica
8a-raw-phvb8a Helvetica-Bold
8a-raw-phvbo8a Helvetica-BoldOblique
8a-raw-phvro8a Helvetica-Oblique
8a-raw-ptmr8a Times-Roman
8a-raw-ptmb8a Times-Bold
8a-raw-ptmbi8a Times-BoldItalic
8a-raw-ptmri8a Times-Italic
8a-raw-pcrr8a Courier
8a-raw-pcrb8a Courier-Bold
8a-raw-pcrbo8a Courier-BoldOblique
8a-raw-pcrro8a Courier-Oblique
___
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