[Fontconfig] Font weights?

[Felix Miata]

On 2011/09/17 13:00 (GMT+0100) Dave Pawson composed:

> W3c css has
> http://www.w3.org/TR/css3-fonts/#font-weight-prop

> 100 - Thin
> 200 - Extra Light (Ultra Light)
> 300 - Light
> 400 - Normal
> 500 - Medium
> 600 - Semi Bold (Demi Bold)
> 700 - Bold
> 800 - Extra Bold (Ultra Bold)
> 900 - Black (Heavy)

Note that just because W3 & CSS provide for them doesn't mean they exist. 
Very few web fonts have more than two weights. Most have only medium & bold. 
Some have only bold or only light. Most of the few common fonts that have 
more than two are Mac only, or at least were last I checked. Some Vista & W7 
fonts might have more.

http://fm.no-ip.com/Auth/Font/fonts-comps-commonweight.html & 
http://fm.no-ip.com/Auth/Font/fonts-weightier.html show what's available 
among the most common web fonts.

> fontconfig has

> #define FC_WEIGHT_THIN		    0
> #define FC_WEIGHT_EXTRALIGHT	    40
> #define FC_WEIGHT_ULTRALIGHT	    FC_WEIGHT_EXTRALIGHT
> #define FC_WEIGHT_LIGHT		    50
> #define FC_WEIGHT_BOOK		    75
> #define FC_WEIGHT_REGULAR	    80
> #define FC_WEIGHT_NORMAL	    FC_WEIGHT_REGULAR
> #define FC_WEIGHT_MEDIUM	    100
> #define FC_WEIGHT_DEMIBOLD	    180
> #define FC_WEIGHT_SEMIBOLD	    FC_WEIGHT_DEMIBOLD
> #define FC_WEIGHT_BOLD		    200
> #define FC_WEIGHT_EXTRABOLD	    205
> #define FC_WEIGHT_ULTRABOLD	    FC_WEIGHT_EXTRABOLD
> #define FC_WEIGHT_BLACK		    210
> #define FC_WEIGHT_HEAVY		    FC_WEIGHT_BLACK
> #define FC_WEIGHT_EXTRABLACK	    215
> #define FC_WEIGHT_ULTRABLACK	    FC_WEIGHT_EXTRABLACK

> Is there any clear relationship between them please?
-- 
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words are persuasive." Proverbs 16:21 (New Living Translation)

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Felix Miata  ***  http://fm.no-ip.com/