FOP (building PDF files) normally supports only the base 14 font package defined in the Adobe PDF specification.
That includes the following fonts: Helvetica, Times, Courier, Symbol and ZapfDingbats.
Font support in FOP can be extended by the addition of font metric files (written in XML) created from Adobe
Type 1 fonts and Truetype fonts. No other font types (Type 3, etc.) are supported at this time.
The Font is simply embedded into the PDF file, it is not converted.
Adding additional Type 1 fonts
As mentioned above you need an XML file containing font metrics to be able to use an additional font. FOP
contains a tool that can generate such a font metrics file from a PFM file, which normally comes with the font file.
Generating a font metrics file
Run the class org.apache.fop.fonts.apps.PFMReader to generate the XML file.
Windows:
Unix:
The tool will construct some values (FontBBox, StemV and ItalicAngle) based on assumptions and
calculations which are only an approximation to the real values. FontBBox and Italic Angle can be found in
the human-readable part of the PFB file. The PFMReader tool does not yet interpret PFB files, so if you want
to be correct, you may have to adjust the values in the XML file manually. The constructed values however
appear to have no visible influence.
If you do not want the font embedded in the PDF then remove the
"embed-file" attribute. The PDF will then contain text using
the font with the font metrics and to view it properly the
font will need to be installed where it is being viewed.
Cocoon users will need to setup the config, see FOPSerializer
for more information.
Adding additional TrueType
Adding Truetype fonts is almost identical to the process of
adding type 1 fonts. The main difference is in the first
step.
Generating a font metrics file
As mentioned above you need an XML file containing font
metrics to be able to use an additional font. FOP contains
a tool that can generate such a font metrics file from
your truetype font file.
Create metrics for the fontfile (we assume the file has
the name cmr10.ttf and exists in c:\myfonts\):
TrueType collections
TrueType collections (.ttc files) contains more than one
font. To create metrics for a ttc file you must specify
the font in the collection with the -ttcname option to
TTFReader.
To get a list of the fonts in a collection, just start the
TTFReader as if it were a normal truetype file (without
the -ttcname option). It will then display all the font
names and exit with an Exception...
