W3C home > Mailing lists > Public > www-style@w3.org > June 2009

Re: [CSSWG] Minutes F2F 2009-06-05 Part I: SVG Properties, Fonts

From: Thomas Phinney <tphinney@cal.berkeley.edu>
Date: Wed, 17 Jun 2009 16:50:27 -0700
Message-ID: <f49ae6ac0906171650x76c89a51rca488c6250d8ea34@mail.gmail.com>
To: www-style@w3.org
On Wed, Jun 17, 2009 at 12:55 PM, Zack Weinberg<zweinberg@mozilla.com> wrote:
> Thomas Phinney <tphinney@cal.berkeley.edu> wrote:
>
>> Just one comment:
>>
>> ...
>> >  Steve: Original spec implied that values like 250 could not be
>> > mapped into CSS model.
>> >  John: It is a 9-point scale, forget about the actual values. Just
>> > need to map the font onto nine points, whatever their names.
>>
>> No, it is NOT a 9-point scale. It is a numeric system of ~1000 units.
>> Treating it as a 9-point scale (or as arbitrary labels) will get you
>> into trouble.
>
> The font-weight property *as currently specified in CSS* is a 9-point
> scale with arbitrary, ordered labels, that happen to have the form of
> numbers. Quoting http://www.w3.org/TR/CSS2/fonts.html#font-boldness --
>
> 'font-weight'
>  value: normal | bold | bolder | lighter | 100 | 200 | 300 | 400
>  | 500 | 600 | 700 | 800 | 900 | inherit
>
> If it were a numeric system it would be
>
>  value: normal | bold | bolder | lighter | inherit | <integer>
>
> Now if what you are saying is that in order to handle all currently-
> existing fonts, the spec needs to be changed to allow any integer in
> the 0 ... 999 range, then OK, make that proposal.  But that is not the
> way it is now, and I for one would want to see an example of a font
> with more than nine weights in order to be convinced that a simple
> mapping from this 9-point scale to whatever the values are in the
> actual font would not suffice.  I'm skeptical about this because the
> text at http://www.microsoft.com/typography/otspec/os2.htm#wtc leads me
> to believe that there are exactly nine possible values for
> usWeightClass in a valid OpenType font.  (Would you be happier if the
> spec were changed to use the names 'thin', 'extra-light', ... 'black'
> from that list, instead?)

Yes, that's what I'm saying, and I have made that proposal previously,
and hereby make it again.

There are a number of typefaces with more than nine weights, even if
they aren't common. I'm asking around to get a list of some good
examples.
Received on Wednesday, 17 June 2009 23:51:07 GMT

This archive was generated by hypermail 2.3.1 : Tuesday, 26 March 2013 17:20:18 GMT