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Re: Need to clarify the effects of bidi paragraph breaks

From: Aharon (Vladimir) Lanin <aharon@google.com>
Date: Wed, 23 Feb 2011 11:50:30 -0800
Message-ID: <AANLkTi=nYDfGgCVLHKokPVYc9GZ9mZFKVxP+XLE1weWh@mail.gmail.com>
Cc: W3C style mailing list <www-style@w3.org>, fantasai <fantasai.lists@inkedblade.net>, public-i18n-bidi@w3.org
I think that this thread needs the input of the Writing Modes editor.
Fantasai, could you please respond?

On Mon, Dec 20, 2010 at 10:17 AM, CE Whitehead <cewcathar@hotmail.com>wrote:

>
>
> > Date: Thu, 16 Dec 2010 16:43:21 +1100
> > From: alan@css-class.com
> > To: aharon@google.com
> > CC: www-style@w3.org; fantasai.lists@inkedblade.net;
> public-i18n-bidi@w3.org
>
> > Subject: Re: Need to clarify the effects of bidi paragraph breaks
> >
> > On 16/12/2010 4:01 PM, Alan Gresley wrote:
> > > On 16/12/2010 9:11 AM, Aharon (Vladimir) Lanin wrote:
> > [snip]
> > >> Further down in the same major section, the definition of
> > >> unicode-bidi:plaintext<
> http://dev.w3.org/csswg/css3-writing-modes/#unicode-bidi>
> > >>
> > >> states:
> > >>
> > >> "For the purposes of the Unicode bidirectional algorithm, the base
> > >> directionality of each "paragraph" for which the element is the
> > >> containing
> > >> block element is determined not by the element's computed ‘direction’
> as
> > >> usual, but by following rules P1, P2, and P3 of the Unicode
> bidirectional
> > >> algorithm."
> > >
> > >
> > > Above I see "which the element." I have know idea what element is being
> > > referred to here.
> Any element that contains the current and that thus effects its computed
> direction -- or is this confusing?
>
> > > This paragraph also seems to suggest an added meaning
> > > of a containing block. What is a containing block element?
>
> See the definition below of a containing block -- but I am guessing you
> already have this.
>
> >
> >
> > Should this read *containing block-level element*? I was thinking that
> > it was referring to the CSS term, *containing block*.
> >
>
> Hmm yes but in this case it's definitely an element that's been defined as
> the containing block
>
> A containing block also can be a "viewport"; see:
>
> http://reference.sitepoint.com/css/containingblock
> "the value of the position property for that element.
> If the value of the position property is static (the default) or relative,
> the containing block is formed by the edge of the content box of the nearest
> ancestor element whose display property value is one of:
> * block *inline-block *list-item *run-in (only in a block formatting
> context; see Formatting Concepts *table *table-cell
> If the value of the position property is absolute, the containing block is
> the nearest positioned ancestor—in other words, the nearest ancestor whose
> position property has one of the values absolute, fixed, or relative. The
> containing block is formed by the padding edge of that ancestor.
> If the value of the position property is fixed, the containing block is the
> viewport (for continuous media) or the page box (for paged media)."
>
> Hope this helps.
>
> Best,
>
> --C. E. Whitehead
> cewcathar@hotmail.com
> >
> > --
> > Alan http://css-class.com/
> >
> > Armies Cannot Stop An Idea Whose Time Has Come. - Victor Hugo
> >
>
>
>
>
Received on Wednesday, 23 February 2011 19:53:49 GMT

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