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Re: [SMIL3.0] i18n comment 3: Define direction of start and end textAlign based on text direction

From: Martin Duerst <duerst@it.aoyama.ac.jp>
Date: Thu, 25 Oct 2007 12:53:23 +0900
Message-Id: <>
To: "Richard Ishida" <ishida@w3.org>, <public-i18n-core@w3.org>
Cc: <www-smil@w3.org>

The answer from the SMIL WG seems okay, except that the
fact that text like this

"text is left-aligned in the region if the effective value of the
textDirection attribute is ltr, or right-aligned otherwise"

doesn't mention rtl at all. This means that with arbitrary values
(e.g. textDirection='abc'), following the spec strictly will
mean that the text is right-aligned.

I propose that the semantics of every legal value be spelled
out explicitly.

In the text quoted below, there are two instances of this issue,
there may be more in the spec.

Regards,   Martin.

At 22:02 07/10/24, Richard Ishida wrote:
>-----Original Message-----
>From: tmichel@w3.org [mailto:tmichel@w3.org] 
>Sent: 23 October 2007 10:08
>To: Richard Ishida
>Cc: www-smil@w3.org
>Subject: Re: [SMIL3.0] i18n comment 3: Define direction of start and end
>textAlign based on text direction
> Dear Richard Ishida ,
>The SYMM Working Group has reviewed the comments you sent [1] on the Last
>Call Working Draft [2] of the Synchronized Multimedia Integration Language
>(SMIL 3.0) published on 13 Jul 2007. Thank you for having taken the time to
>review the document and to send us comments!
>The Working Group's response to your comment is included below.
>Please review it carefully and let us know by email at www-smil@w3.org if
>you agree with it or not before 02 nov 2007. In case of disagreement, you
>are requested to provide a specific solution for or a path to a consensus
>with the Working Group. If such a consensus cannot be achieved, you will be
>given the opportunity to raise a formal objection which will then be
>reviewed by the Director during the transition of this document to the next
>stage in the W3C Recommendation Track.
>For the SYMM Working Group,
>Thierry Michel
>W3C Staff Contact
> 1. http://www.w3.org/mid/20070830201228.108FE4F018@homer.w3.org
> 2. http://www.w3.org/TR/2007/WD-SMIL3-20070713/
>Your comment on 8. SMIL 3.0 smilText:
>> Comment from the i18n review of:
>> http://www.w3.org/TR/2007/WD-SMIL3-20070713/
>> Comment 3
>> At http://www.w3.org/International/reviews/0708-smil30/
>> Editorial/substantive: S
>> Owner: AP
>> Location in reviewed document:
>> 8 [http://www.w3.org/TR/2007/WD-SMIL3-20070713/smil-text.html]
>> Comment: The textAlign attribute defines a number of values (start, 
>> end, left, right, center) that assume left-to-right text progression.
>> While 'left' and 'right' seem obvious, start and end should depend on 
>> text direction (which can be set by textDirection).
>Working Group Resolution:
>We feel that this comment is based on a miss-reading of the existing
>specification. For start-aligned text, the LCWD spec explicitly states that
>"text is left-aligned in the region if the effective value of the
>textDirection attribute is ltr, or right-aligned otherwise", and the
>definition for end-aligned text states that "text is right-aligned in the
>region if the effective value of the  textDirection attribute is ltr, or
>left-aligned otherwise".
>Note that in the CR version of smilText, the textDirection attribute will be
>replaced by the textWriteMode attribute (which expands the options available
>for layout), but the essence of the support remains unchanged.

#-#-#  Martin J. Du"rst, Assoc. Professor, Aoyama Gakuin University
#-#-#  http://www.sw.it.aoyama.ac.jp       mailto:duerst@it.aoyama.ac.jp     
Received on Thursday, 25 October 2007 05:03:40 UTC

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