[ABU] 16-Jul-2017

'''extrafont''' is a package providing a way for loading "private fonts" in a Tk apps.

"Private fonts" are fonts usually delivered with an app.<<br>>
They don't need to be installed in some 'standard' system-wide directories;
once these fonsts are loaded, they can be used in the same way of pre-installed fonts.<<br>>
These loaded fonts are only visible by the process (app) who loaded'em, and then
disappear when the app terminates.

***Download ***
 
   * [https://sourceforge.net/projects/irrational-numbers/files/extrafont-1.0.zip/download]  '''extrafont-1.0''' Multi-platform package

The '''extrafont''' package provide one core command
 extrafont::load
and two convenience commands
 extrafont::isAvailable
 extrafont::availbaleFamilies


   '''extrafont::load''' ''filename'':    After loading ''filename'', a new font-family will be available to the current Tk app. 


   '''extrafont::isAvailable''' ''fontFamily'':    Return true is ''fontFamily'' is avaiable.

   '''extrafont::availableFamilies''' ''fontFamilyPattern'':    Return the list of font-families matching the glob-style ''fontFamilyPattern''.
 
e.g.
 extrafont::availableFamilies co*
 returns
  Courier {Comic Sans MS}  .....

 
One important distinction to keep in mind is among
   * font-filename
   * font-family
   * fontname
  
Font-filename is used just for loading an external font:
  extrafont::load "c:/tmp/Monoton-regular.ttf"

This font will be then available as "Monoton" font-family (note that the family-name may be very different from the font-filename).
 extrafont::isAvailable "Monoton"   ;# true
 
Finally, when you want to use this new font, you should create or configure 
a fontname (using the standard 'font' command)

 set myfontname "tk_monoton"  ;#  ... choose the name you want ..
 font create $myfontname -family "monoton" -size 20
  # or, let tk choose a fontname for you ...
 set myfontname [font create -family "monoton" -size 20]
  # then use $myfontname for a new widget ...
 label .mylabel -font $myfontname .......  


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