- From: Dr. Olaf Hoffmann <Dr.O.Hoffmann@gmx.de>
- Date: Fri, 17 Jan 2014 15:17:22 +0100
- To: www-svg@w3.org, mcelam@google.com
Hello, if you put your script element into a g element, you do not have to worry about validation and the g does not change the switching behaviour and if required you can put more elements into the g. Concerning the lack of animation capabilities in MSIE or maybe some other browsers you have several options. However you should always have a good text alternative in title and desc of the root svg element. Reading this, the audience can always understand, what is intended. And if animation matters and there is no graphical alternative without, you can add some text to the file, explaining that animation support is required for understanding, due to a bug or gaps this seems not to be available in the used viewer, but one can read title and desc to get a text alternative. With a set or animate element you can remove this, in case animation works. This is a more advanced feature selection than switch, because you use the same feature to remove the hint or warning as is required for your content. Or you can put all your animation related content into one g element and a hint about no animation into another and both into the switch with the required feature. With tref you can reuse text from title and desc to display this directly with graphical text elements as an alternative for the animated content (but you have to ensure, that related viewers not interpreting animation interprete tref for this approach). Doing this, the audience does not have to switch to the alternative text view manually in case of bugs and gaps of the viewer. Obviously, if you embed the SVG or reference it from other files, you can provide a hint as well, that interpretation of animation is required for the file - and if you like, you can add a collection of viewers, that do the job properly, to facilitate the audience to find and install better software than they currently use. But your test file only contains a static red square, no animation at all, therefore it is not obvious, what you want to do with it and if there is a way without animation - respectively I can see the red rectangle with and without animation capabilities, it simply does nothing else - why to require the animation feature for this? Olaf
Received on Friday, 17 January 2014 14:17:51 UTC