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Add note for wide ruby annotations (#250). #605

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Merged
merged 6 commits into from
Feb 15, 2018
Merged

Add note for wide ruby annotations (#250). #605

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76f50c1
add note for wide ruby annotations
cconcolato Jan 30, 2018
158ad80
change wording to timed text instead of subtitle
cconcolato Feb 5, 2018
3c7f2f8
Merge branch 'master' into issue-0250-rubyAlign-wide
nigelmegitt Feb 8, 2018
6bc0eaf
Merge branch 'master' into issue-0250-rubyAlign-wide
cconcolato Feb 14, 2018
64e437d
Avoid impression that space distribution in base text is the only opt…
skynavga Feb 15, 2018
e4d2b97
Merge branch 'master' into issue-0250-rubyAlign-wide
cconcolato Feb 15, 2018
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7 changes: 7 additions & 0 deletions spec/ttml2.xml
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Expand Up @@ -11488,6 +11488,13 @@ have no impact on ruby alignment.</p>
</note>
<p>If a computed value of the property associated with this attribute is not supported,
then a <loc href="#terms-presentation-processor">presentation processor</loc> must use the value <code>center</code>.</p>
<note role="elaboration">
<p>In this specification, ruby annotations in timed text applications are assumed to be narrow, since presentation space and available time are
often constrained. As a consequence, this version of TTML does not enable authors to control how spacing is distributed when the
ruby annotation is wider than its base text. This might be problematic for wide ruby annotations at the start or end edge of the line. In order
to avoid issues, authors are encouraged to use an appropriate value of <att>tts:rubyAlign</att> and/or to split events containing wide
ruby annotations into multiple lines or even multiple events.</p>
</note>
<p>The <att>tts:rubyAlign</att> style is illustrated by the following example.</p>
<table id="ruby-align-example-1" role="example">
<caption>Example Fragment &ndash; Ruby Align</caption>
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