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Re: Proposal: font-size: auto

From: Windy Road <tom@windyroad.org>
Date: Wed, 6 Jun 2007 17:29:35 +1000
Message-ID: <746049190706060029p661be020ha495494fdfd91ad6@mail.gmail.com>
To: www-style@w3.org

On 06/06/07, David Woolley <forums@david-woolley.me.uk> wrote:
> > Yes.  That's the point. It wouldn't make sense to have width 400px and
> > font-size:auto ad it leaves no way for a browser to calculate a correct
> > font-size.
> I had assumed that you were doing a 2D fit.

Ah, now I understand you're concerns.  No, the proposal is just for
the font-size to be based on the width of the element (rather than the
other way around).

> >     This is likely to result in very small fonts
> > How so? Just say you have a browser window, which is 1024px across.  If
> > the properties above were applied to the body, the width of the body
> > (including the margins) would be 54em, resulting in a font size of  ~
> > 19px.  At a width of 800px, the font-size would be ~ 15px and at 640px
>  > it would be ~12px.  In the example I provided, the text is actually
>  > more
> And with typical PDAs, at 150px, it would be of the order of 3px.  More
> realistically, given the font sizes that seem to be preferred by
> designers, one would start at 7px and reduce to about 1px, i.e. font
> sizes tend to start at the smallest size that is renderable as
> recognizable characters (and assumes good vision on the part of the user!).

Let's run with that though.  Imagine you have no minimum font-size,
then you're right on a 150px PDA, you won't be able to read a thing.
However you will get a very good overview of the page.  Now say the
PDA has a zoom facility (hmm.. kind of like the effect demoed on the
iPhone), then user can zoom in to the bit they are interested in and
start reading.


Tom Howard
Received on Wednesday, 6 June 2007 07:29:40 UTC

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