Using external fonts with Fontmap

To use external fonts, the font must be in TTF, PFB or PFA font format. Below are the step-by-step instructions.
First, create the directory, in this case foo

shell# mkdir /tmp/foo

Copy the fonts to /tmp/foo dir. Inside foo dir create the file Fontmap(it must be this name); in body of file make the following font map to Trebuchet.ttf and Verdana.ttf.

/Trebuchet (Trebuchet.ttf); 
/Verdana   (Verdana.ttf); 

thus

shairon@hashcode:/tmp/foo$ ls -lh  
-rw-r--r-- 1 shairon shairon   57 2008-06-12 17:25 Fontmap 
-rw-r--r-- 1 shairon shairon 124K 2008-06-12 17:23 Trebuchet.ttf 
-rw-r--r-- 1 shairon shairon 137K 2008-06-12 17:24 Verdana.ttf 

Loading the fonts

RGhost::Config::GS[:extensions] << '/tmp/foo'

Now you have to define tags using the method define_tags

d.define_tags do
  tag :myfont, :name => 'Verdana', :size => 12, :color => '#ADAD66'
end

Using the tag

doc.show 'Hello using the Verdana font', :tag => :myfont

with method/class Text

doc.text 'Hello using the <myfont>Verdana</myfont>'