RE: Shadows vs. layout from David Perrell on 2009-08-05 (www-style@w3.org from August 2009)

From: David Perrell <davidp@hpaa.com>
Date: Tue, 4 Aug 2009 19:30:13 -0700
To: "Brad Kemper" <brad.kemper@gmail.com>
Cc: "W3C style mailing list" <www-style@w3.org>
Message-ID: <HIEDLECHAFDEPLGKECDDGEFNAMAB.davidp@hpaa.com>

Re: outlines should not affect scroll dimensions.

I added a test case to http://hpaa.com/firefox/shadow.htm. Opera and
Safari/Chrome render outlines per spec, with no effect on scrollWidth. With
Firefox, however, the outline affects scrollWidth. I don't have IE8
installed.

Maybe it would be helpful to imagine 'effects layers' above and below each
element. Overflow has no meaning on effects layers. Like the canvas, they
extend infinitely in 2 dimensions and clip only to the viewport.

David Perrell

Received on Wednesday, 5 August 2009 02:38:09 UTC