Previous Next

                                         462
CHAPTER 5                                                                         Text



The following is an example of a Style entry in the font descriptor:

   /Style << /Panose < 01 05 02 02 03 00 00 00 00 00 00 00 > >>


FD

A CIDFont may be made up of different classes of glyphs, each class requiring
different sets of the font-wide attributes that appear in font descriptors. Latin
glyphs, for example, may require different attributes than kanji glyphs. The font
descriptor defines a set of default attributes that apply to all glyphs in the
CIDFont. The FD entry in the font descriptor contains exceptions to these de-
faults.

The key for each entry in an FD dictionary is the name of a class of glyphs—that
is, a particular subset of the CIDFont’s character collection. The entry’s value is a
font descriptor whose contents are to override the font-wide attributes for that
class only. This font descriptor should contain entries for metric information
only; it should not include FontFile, FontFile2, FontFile3, or any of the entries list-
ed in Table 5.21.

It is strongly recommended that the FD dictionary contain at least the metrics for
the proportional Latin glyphs. With the information for these glyphs, a more ac-
curate substitution font can be created.

The names of the glyph classes depend on the character collection, as identified
by the Registry, Ordering, and Supplement entries in the CIDSystemInfo
dictionary. Table 5.22 lists the valid keys for the Adobe-GB1, Adobe-CNS1, Ado-
be-Japan1, Adobe-Japan2, and Adobe-Korea1 character collections.

Previous Next