[aXSL-user] new FontUse interface

[Victor M. <vi...@ou...>]

I just completed the addition of the FontUse interface, which is actually
Font being split into two pieces. IOW the methods in FontUse were all
formerly in Font, with the exception of the getFont() method, which ties the
two together. There is intended to be a one-to-many relationship between
Font and FontUse. FontUse is a Font used in a specific way. It corresponds
to the font-description element in the font-configuration. The most
important aspect of this is that the Font is separated from its encoding, so
that it can be configured to be encoded in more than way. However, it also
allows a font to be configured in more than one font-family for other
reasons as well, and provides greater flexibility with regard to simulating
font characteristics like small-caps, oblique, and the font-stretch
characteristics.

Implementations should in most cases use the FontUse in places where the
Font interface was used before. The Font implementation can be obtained from
FontUse through the getFont() method.

Future changes will probably have the FontServer returning Collections of
both Font instances used and FontUse instances used.

Victor Mote