ISSUE-374: Generalize tts:fontVariantPosition
Generalize tts:fontVariantPosition
- State:
- OPEN
- Product:
- TTML2
- Raised by:
- Glenn Adams
- Opened on:
- 2015-02-23
- Description:
- In order to support Japanese (and other CJK) usage, it is useful to support selection of other axes of glyph variation besides position (super/sub). In particular, selection of full width and half width variants, as supported by the OpenType 'fwid' and 'hwid' features, as well as ruby variants, is useful. To this end, the tts:fontVariantPosition property should be renamed to tts:fontVariant, and its values enhanced to specify, at a minimum:
* super vs sub (script) forms
* full vs half width forms
* ruby forms
Specifically, propose the value of the generalized property to adhere to the following:
tts:fontVariant
: normal
| [ super | sub ] || [ full | half ] || ruby
When super or sub is specified, then the 'sups' or 'subs' OpenType feature is enabled. When full or half is specified, then the 'fwid' or 'hwid' OpenType feature is enabled. When ruby is specified, then the 'ruby' OpenType feature is enabled.
- Related Actions Items:
- No related actions
- Related emails:
- {minutes} TTWG Meeting 2015-02-26 (from nigel.megitt@bbc.co.uk on 2015-02-26)
- {agenda} TTWG Meeting 2015-02-26 (from nigel.megitt@bbc.co.uk on 2015-02-25)
- Re: ISSUE-374: Generalize tts:fontVariantPosition [TTML2] (from glenn@skynav.com on 2015-02-23)
- Re: ISSUE-374: Generalize tts:fontVariantPosition [TTML2] (from nigel.megitt@bbc.co.uk on 2015-02-23)
- ISSUE-374: Generalize tts:fontVariantPosition [TTML2] (from sysbot+tracker@w3.org on 2015-02-23)
Related notes:
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