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Re: [PROPOSAL] Checkpoint 4.1Configure text size.

From: Ian B. Jacobs <ij@w3.org>
Date: Wed, 11 Jul 2001 13:54:47 -0400
Message-ID: <3B4C92E7.E220685D@w3.org>
To: Tantek Celik <tantek@cs.stanford.edu>
CC: Jon Gunderson <jongund@uiuc.edu>, w3c-wai-ua@w3.org
Tantek Celik wrote:
> Just a minor point - when talking about font sizes on the screen, please use
> the units relevant to the screen which are pixels, not points.

Sorry about that.
> I agree with your concerns and think they are valid.
> > I think more granularity is required, and in the past we have
> > not been able to establish with certainty any granularity other
> > than "everything".
> >
> > Is there a way to get
> >  a) Biggest font.
> >  b) A few other big fonts.
> How about:
> <NEW3>
> 2. Allow the user to choose from the range of font sizes from the smallest
> font size presented by the font size selection mechanism provided by the
> user interface of the operating system environment (lacking such a
> mechanism, use the smallest font size supported by the operating system
> environment) up through and including the largest font size supported by the
> operating system environment.
> </NEW3>

This is interesting because it points at a difference that I think is
relevant but that I don't believe we've explored previously:

 - The operating system (or environment) API might allow one range of

 - Conventions for choosing font sizes might allow another. If I've
   the operating environment's font selection mechanism may be adopted
   by software (and in fact, we are presuming that it will be adopted
   by software running in that environment). 

One question to ask might be: what does the checkpoint mean by
"supported by the operating environment", and perhaps we need to
be more precise. 

I would not object to a clarification that we are not talking
about text drawing capabilities of the operating environment but font
size (and family) selection services that are conventional in the
operating enviornment.

So, tell me if this makes sense:
Allow the user to choose from among the full range of font sizes offered
the conventional font selection mechanism of the operating environment. 
If the operating environment does not offer such a mechanism, allow
the user to choose from among the full range enabled by conventional
text drawing APIs of the operating environment.

I like the idea of a cascade, but I am not familiar enough with the
operating enviornment mechanisms in play here to say whether this
specific one makes sense.

 - Ian

Ian Jacobs (ij@w3.org)   http://www.w3.org/People/Jacobs
Cell:                    +1 917 450-8783
Received on Wednesday, 11 July 2001 13:54:51 UTC

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