[news.eclipse.platform.swt] Re: FontMetrics missing some usefull functio

[Stefan Matthias Aust <sma@xxxxxxxxx>]

Hans Deragon wrote:

>   Using FontMetric.getAverageCharWidth() is not good enough.  I do not 
> want the average, I want the size of the largest (usually 'm').

Why don't you simply enumerate all chars using GC#getAdvanceWidth() and 
calculate the maximum yourself?

However, please note that the advance width of two characters as 
measured by GC#stringExtent might not be the sum of the widths of both 
characters.  If you want to measure strings, use the latter method 
because that known about kerning and stuff.

Furthermore, the advance width isn't the real width of the character 
glyph. This can be determined with GC#getCharWidth.  This value however 
can't be used to calcuate the extent of a bounding box that contains a 
drawn character because - AFAIK - there's no way to determine the 
initial indent or the overhang of the character glyph.


bye
--
Stefan Matthias Aust   //
www.3plus4software.de // Inter Deum Et Diabolum Semper Musica Est