ISSUE-74: Which properties determine the # of layers?

nr-of-layers

Which properties determine the # of layers?

State:
CLOSED
Product:
CSS3 Backgrounds and Borders
Raised by:
Bert Bos
Opened on:
2008-12-08
Description:
David Baron remarked[1] that 'background-image', 'background-repeat', 'background-size', and 'background-position' contribute to the number of background layers, but 'background-clip' and 'background-origin' do not, which seems inconsistent. More intuitive would be (1) all six properties are taken into account, or (2) only 'background-image' is.

David Hyatt prefers[2] the former.

[1] http://www.w3.org/mid/20080916201208.GA4365@pickering.dbaron.org
[2] http://www.w3.org/mid/251384DE-0FBB-4F41-A2D4-FB26B167231F@apple.com
Related Actions Items:
No related actions
Related emails:
  1. [css4-background] Change the way the # of background layers is calculated (from leaverou@gmail.com on 2011-02-21)
  2. [CSSWG] Minutes and Resolutions 2009-01-07 (from fantasai.lists@inkedblade.net on 2009-01-07)
  3. Re: [css3-background] number of layers should consemailIder background-origin and background-clip (from bert@w3.org on 2008-12-08)
  4. Re: [css3-background] number of layers should consemailIder background-origin and background-clip (from bert@w3.org on 2008-12-08)
  5. ISSUE-74 (nr-of-layers): Which properties determine the # of layers? [CSS3 Backgrounds and Borders] (from sysbot+tracker@w3.org on 2008-12-08)

Related notes:

At 7 Jan 2008 telcon, people were slightly in favor of option 2 (only bg-image counts) or had no opinion, but we will wait for Apple to give an opinion, based on their implementation experience. See
http://www.w3.org/2009/01/07-css-irc#T17-34-24

Bert Bos, 7 Jan 2009, 17:37:13

Resolved background-image only based on tentative resolution and Hyatt's ok.

Elika Etemad, 12 Jan 2009, 23:52:46

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Peter Linss <peter.linss@hp.com>, Daniel Glazman <daniel.glazman@disruptive-innovations.com>, Chairs, Chris Lilley <chris@w3.org>, Bert Bos <bert@w3.org>, Staff Contacts
Tracker: documentation, (configuration for this group), originally developed by Dean Jackson, is developed and maintained by the Systems Team <w3t-sys@w3.org>.
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