🚀 go-pugleaf

In article <1987Oct27.134058.23182@gpu.utcs.toronto.edu> tomwest@gpu.utcs.toronto.edu (Tom West) writes:
>  I am adapting our word processor to a postscript engine.  However, I
>am not sure how to handle underlines.  Is there any easy way to know where
>or how to underline?  We use a mono-spaced font (for the most part).  Can
>one just draw a horizontal line of the appropriate length with the same
>vertical position as the characters?
>

No.  But you can get the from the AFM files provided by Adobe for you
driver or in Adobe's font dictionary for a postscript procedure.

In Adobe's font dictionaries, there is a dictionary called 'FontInfo'.
FontInfo contains about eight items, including 'UnderlinePosition' and
'UnderlineThickness'.  These are integer containing the number of
units from the baseline to draw a line (the number is negative) and
its width.  These numbers are in the character system coordinates
(1000 units to a point).  So divide the number by 1000 and multiply by
the current point size.  See the Red book, page 93 for more info.

>  As well, if we decide to get sophisticated, we would want to use non-mono
>fonts.  Is there anywhere that we can get the length of characters in the
>standard fonts (Times, Helvetica and Symbols)?

Again, you can use the AFM files available from Abobe or the
'stringwidth' operator.

Ted Ede -- ted@mitre-bedford.arpa -- The MITRE Corporation -- Burlington Road  
|       -- DDD: (617) 271-2545 -- Bedford MA, 10730 -- Mail Stop B015 --    |
|                   - this line intentionally left blank -                  |
+---------------------------------------------------------------------------+