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>" 1>&2 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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