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Re: Yet Another Scroll-Up Idea (YASUI) in VTT

From: David Singer <singer@apple.com>
Date: Thu, 06 Sep 2012 16:47:11 -0700
Cc: public-texttracks <public-texttracks@w3.org>
Message-id: <891A7646-118E-4CE7-A917-6C70474F0E40@apple.com>
To: Simon Pieters <simonp@opera.com>

On Sep 6, 2012, at 16:40 , Simon Pieters <simonp@opera.com> wrote:

> On Fri, 07 Sep 2012 01:11:08 +0200, David Singer <singer@apple.com> wrote:
> 
>>> This assumes that you can only position cues vertically with integers, not with %?
>> 
>> oh, right.  % needs thought.  I will re-read the existing collision rules (maybe others can pitch in here).  But perhaps we can say that roll-up regions must be addressed by line (which is only sort-of a cop-out).
> 
> Not supporting % would certainly simplify things a great deal. I take it that 708 does not require vertical positioning within a region with %?

Correct, 708 addresses a 'character buffer' which is indexed by line and character position, and the buffer is then rendered.  roll-up happens when a carriage-return is written into a region that has roll-up behavior.


> 
> -- 
> Simon Pieters
> Opera Software

David Singer
Multimedia and Software Standards, Apple Inc.
Received on Thursday, 6 September 2012 23:47:38 UTC

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