ISSUE-1

px units

State:

CLOSED

Product:

CSS2.1

Raised by:

Elika Etemad

Opened on:

2008-03-22

Description:

It seems to be an unwritten assumption, that CSS 'px' units should map to
a whole number of device pixels. E.g. the examples in the spec all assume
rounding to a whole number of device pixels. But there is no normative
text that suggests this interpretation.

Proposed change:

Replace
  "the user agent should rescale pixel values"
with
  "the user agent should rescale pixel units to a different whole number
  of device pixels"

OR

Insert before
  "It is recommended that the reference pixel be..."
the sentence
  "It is recommended that the pixel unit refer to the whole number of
  device pixels that best approximates the reference pixel."

Related Actions Items:

• ACTION-54 on Bert Bos to Make CSS2.1 edits for ISSUE-1 - due 2008-04-16, pending review

Related emails:

1. [CSSWG] Minutes and Resolutions 2008-04-09 (from fantasai.lists@inkedblade.net on 2008-04-10)
2. RE: [CSS21] [css3-values] px and device pixels (from alexmog@exchange.microsoft.com on 2008-03-25)
3. ISSUE-1: [CSS2.1] (from sysbot+tracker@w3.org on 2008-03-22)
4. Re: [CSS21] [css3-values] px and device pixels (from fantasai.lists@inkedblade.net on 2008-03-21)

Related notes:

Display change log.