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SVG Tiny 1.2 CR2006-08-10: 7.9 preserveAspectRatio animatable or not?

From: Dr. Olaf Hoffmann <Dr.O.Hoffmann@gmx.de>
Date: Sat, 19 Aug 2006 13:38:23 +0200
To: www-svg@w3.org
Message-Id: <200608191338.23709.Dr.O.Hoffmann@gmx.de>

in the attribute description of preserveAspectRatio
it is mentioned, that the attribute is not animatable.
But in three of four possible elements, the attribute 
can be used, it is specified to be animatable and at 
it is as well mentioned to look at the attribute 
description (5.1.2 The 'svg' element; 12.4 The 
'animation' element; 12.3 The 'video' element).
I think there is a minor clarification desirable to assure 
this to be implemented in the same way in different viewers 
or to be able to test the behaviour of viewers.

Does the information directly given at the element
supersede the information given at the attribute description
or is it the over way round? If it is in the last way,
what is the purpose to mention that the attribute is
animatable at the element description? 
Or does it mean, that only for image (5.7) the attribute 
is not animatable?
This is a little bit surprising, because it is maybe
much easier to animate it for an image as for a 
video or a complete SVG document.

The solution of the problem of course depends on the
intention, maybe one of these suggestions:
1: if it is animatable in general as in SVG tiny 1.1
it would be enough to change 'Animatable: no' in 7.9 to
'Animatable: yes'
2. if it is not animatable in general the information
about this in 5.1.2, 12.3 and 12.4 should be changed
to 'Animatable: no'
3. if it is really intended, that it is only animatable for
svg, animation and video and not for image, 7.9 should be
changed to 'Animatable: see element description' and in
5.7 some information should be added, that preserveAspectRatio
for image is not animatable.

Best wishes
Received on Saturday, 19 August 2006 11:34:37 UTC

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