[ttml2] Model for binding presentation values to externally defined parameters

• From: Nigel Megitt via GitHub <sysbot+gh@w3.org>
• Date: Thu, 03 Mar 2016 11:52:46 +0000
• To: public-tt@w3.org
• Message-ID: <issues.opened-138157154-1457005965-sysbot+gh@w3.org>

nigelmegitt has just created a new issue for 
https://github.com/w3c/ttml2:

== Model for binding presentation values to externally defined 
parameters ==
As an addition to the condition mechanism it would be helpful to be 
able to bind the 
[`<parameter-function>`](https://rawgit.com/w3c/ttml2/master/spec/ttml2.html#content-value-parameter-function)
 to attribute values directly to permit pass through of customisation 
settings. For example:

```xml
<styling>
   <initial 
      tts:fontSize="parameter('local-font-size-percent')"
      tts:fontFamily="parameter('local-font-choice')"/>
...
</styling>
```

This particular example would break the link between authoring 
expectations and presentation behaviour, but I expect we could define 
functions that would apply some range limits or fallbacks in case 
local values are not available for pass through.

Please view or discuss this issue at 
https://github.com/w3c/ttml2/issues/149 using your GitHub account

Received on Thursday, 3 March 2016 11:52:48 UTC