On Jun 5, 2007, at 9:29 PM, Windy Road wrote:
On 06/06/07, David Hyatt <[EMAIL PROTECTED]> wrote:
I don't quite understand the proposal. width can be defined in terms
of font-size.... therefore it's impossible to define font-size in
terms of width. For example, width:50em, font-size:auto would be
undefined, since each would depend on the other.
Take a block element who's width is auto, generally speaking it's
width will be determined by the parent, the parent's padding and the
element's margins. A block element with a font relative width and a
font-size of auto would have it's width calculated in the same way as
the block element with a width of auto. Once the width is calculated,
the font-size (in px) is determined by the following formula:
font-size = calculated_width_in_px / font_relative_width
Except that the width of an element can depend on the font size. If
you say "width:50em" that means 50ems using *your* calculated font
size. In other words, CSS has already created the restriction that
font-size must be calculated before width can be calculated.
Your idea is interesting, but it can't really be defined using font-
size. It's more of an "after-the-fact" adjiustment based off the
calculated width of a block.
dave
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