W3C home > Mailing lists > Public > www-style@w3.org > August 2014

Re: [css3-background] Margin-radius edge case

From: fantasai <fantasai.lists@inkedblade.net>
Date: Wed, 13 Aug 2014 14:23:28 -0700
Message-ID: <53EBD750.5080508@inkedblade.net>
To: Bear Travis <betravis@adobe.com>, "www-style@w3.org" <www-style@w3.org>
On 04/28/2014 04:33 PM, Bear Travis wrote:
> Hi there,
> I just wanted to mention an edge case that might need clarification
> for corner-shaping the margin corner radii [1]. My interpretation of
> the rule would cause a negative margin to yield a ratio less than one,
> and therefore trigger the smoothing case [2], leading to odd results.

Sorry for the late response! We've updated the text following Bert's
suggestion in

It now reads:

  # The margin edge, being outside the border edge, calculates its radius
  # by adding the corresponding margin thickness to each border radius.
  # However, in order to create a sharper corner when the border radius
  # is small, when the border radius is less than the margin, the margin
  # is multiplied by the proportion 1 + (r-1)3, where r is the ratio of
  # the border radius to the margin, in calculating the corner radii of
  # the margin box shape.

Let us know if that seems clear enough, or if you have any other
suggestions to make it easier to read/understand!


Received on Wednesday, 13 August 2014 21:24:01 UTC

This archive was generated by hypermail 2.3.1 : Monday, 2 May 2016 14:39:24 UTC