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[css3-box] New WD for the CSS Basic Box Module

From: Bert Bos <bert@w3.org>
Date: Fri, 10 Aug 2007 00:35:15 +0200
Message-ID: <46BB96A3.6010704@w3.org>
To: Www-style <www-style@w3.org>

After many years finally an update of the working draft for the box 
model. The module has been renamed to "Basic Box Module" and some 
lower-priority items have been removed. They will be published in an 
Extended Box Module.


New features compared to the box model in level 2 include:

   - The box model is generalized to allow vertical text and mixed
     horizontal/vertical text. (The properties to switch text to vertical
     are the subject of the Text Layout module.)

     The new definitions are quite complex, because of all the ways
     vertical and horizontal can be combined, and there are without
     doubt errors. For documents with only horizontal text, the model
     should be exactly the same as the one in CSS 2.1.

     It would help me tremendously if people could read the new model
     carefully and check if it is indeed compatible with the text in
     CSS 2.1.

   - Marquee properties allow to set the speed and direction of an
     overflow mechanism that is often used on the small screen of
     handheld devices. These properties will be used in the CSS Mobile
     Profile, which the CSS WG is writing in cooperation with OMA.

   - 'Overflow-x', 'overflow-y' and 'rotation' are early attempts to
     describe two proposed new features: separate control over the
     overflow in the horizontal and vertical directions and the ability
     to rotate boxes over arbitrary angles.

     There is an idea to skip 'rotation' and instead introduce a
     generalized 'transformation' property with the same set of
     translations, rotations, etc. as in SVG. Modern computers should be
     powerful enough for operations such as these. Feedback welcome.

Comments are welcome on this mailing list, <www-style@w3.org>. If you 
send comments, please prefix the Subject line with [css3-box] as I did 
on this message.

For the CSS WG,
   Bert Bos                                ( W 3 C ) http://www.w3.org/
   http://www.w3.org/people/bos                               W3C/ERCIM
   bert@w3.org                             2004 Rt des Lucioles / BP 93
   +33 (0)4 92 38 76 92            06902 Sophia Antipolis Cedex, France
Received on Thursday, 9 August 2007 22:35:52 UTC

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