RE: [css-ruby] ruby-position: inter-character

Last time when we discussed on the exact positioning of tone marks, we were not very sure whether this should be handled in layout or in font with support from GPOS and other OpenType features built into the fonts. I think most leaned towards to the font approach, but nobody actually looked into it and existing OpenType features provides all the necessary layout for the tone mark positioning.

The benefits of using OpenType features is that then you'll get all the features free in TextEdit and other applications. The downside is probably a layer issue, we'd need some fonts expert.

/koji

-----Original Message-----
From: Bobby Tung [mailto:bobbytung@wanderer.tw] 
Sent: Thursday, September 18, 2014 5:56 PM
To: Richard Ishida
Cc: David Hyatt; www-style list; Xiaoqian Wu; ÞȾû ³Â
Subject: Re: [css-ruby] ruby-position: inter-character

That¡¯s so great, I¡¯ve done some testing for that.

Here¡¯s the quick sample for testing : 
https://www.dropbox.com/s/s22wxba3iotjers/bopomofo_hori.xhtml


1. alignment to Hanzi looks nice so far, and https://www.dropbox.com/s/9rcb97do3lnza51/alignment.png


2, Bopomofo is grouped.
https://www.dropbox.com/s/35428g4zvp6h7x7/rubyposition.mov


That fulfilled the basic requirement for horizontal writing rule, and yes, need some extra work on tone marks.

1. In the xhtml sample, I need add blank nested ruby for every characters to make sure letter space consistent.

2. dot above (U+02D9) ¡¯s glyph is still another issue to solve.

And more information. Links provided by Richard is from Ministry of Education Taiwan for print text-books.

I think jb99.htm is generally used in text-books:
http://www.edu.tw/files/site_content/M0001/juyin/jb99.htm


Bobby Tung
bobbytung@wanderer.tw

Richard Ishida <ishida@w3.org> ì¶ 2014/9/18 ÉÏÎç11:35 Œ‘µÀ£º

> [cc to Bobby Tung, Chen Yijun and Wu Xiaoqian]
> 
> This is great news!
> 
> Bobby, Yijun, Xiaoqian, Dave is looking for rules for positioning of tone marks in bopomofo ruby. I have the following links, but I wonder whether there is something more authoritative:
> 
> http://www.edu.tw/files/site_content/M0001/juyin/jb99.htm?open

> http://www.edu.tw/files/site_content/M0001/juyin/jb89.htm?open

> http://www.edu.tw/files/site_content/M0001/juyin/jb98.htm?open

> 
> http://www.edu.tw/files/site_content/M0001/juyin/hb99.htm?open

> http://www.edu.tw/files/site_content/M0001/juyin/hb89.htm?open

> http://www.edu.tw/files/site_content/M0001/juyin/hb98.htm?open

> 
> It's also not clear to me when to use each of the three alternatives, which have very slightly different dimensions.
> 
> (To see the text you may need to manually set the character encoding 
> of the page to the Big5 Traditional Chinese encoding.)
> 
> Chinese experts, could you please advise?
> 
> Thanks,
> ri
> 
> 
> On 17/09/2014 21:15, David Hyatt wrote:
>> WebKit now supports Bopomofo using the inter-character ruby-position value. This is a very basic implementation. I concentrated mainly on getting support for ruby to the right of glyphs in horizontal text working properly.
>> 
>> For the tone marks, though, I don't do anything special yet. You can control the position of the tone marks with a nested ruby, but this is obviously not ideal. I am looking for guidance regarding how to position the tone marks automatically, but I am unclear on what the rules for positioning them are. I see different positioning rules in various examples...
>> 
>> dave
>> (hyatt@apple.com)
>> 
>> 
>> 
>

Received on Friday, 19 September 2014 03:46:46 UTC