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Re: text-align-07-t pass criteria

From: Alex Danilo <alex@abbra.com>
Date: Tue, 14 Dec 2010 20:42:33 +1100
Message-Id: <XAWEDL.TFOU9HHV3H6M@abbra.com>
To: Cameron McCormack <cam@mcc.id.au>
Cc: Chris Lilley <chris@w3.org>, public-svg-wg@w3.org
Hi Cam,

--Original Message--:
>Cameron McCormack:
>> > So that means the reference image is incorrect, yes?
>
>Chris Lilley:
>> Yes.
>
>So I’ve come back to looking at this test, and I am not sure that the
>pass criteria are valid or that the reference image is incorrect after
>all.  Here is a passage from text.html#FontsTablesBaselines:
>
>  For example, Western glyphs are aligned on the bottoms of the capital
>  letters, northern indic glyphs are aligned at the top of a horizontal
>  stroke near the top of the glyphs and far-eastern glyphs are aligned
>  either at the bottom or center of the glyph. Within a script and
>  within a line of text having a single font-size, the sequence of
>  alignment-points defines, in the inline-progression-direction, a
>  geometric line called a baseline. Western and most other alphabetic
>  and syllabic glyphs are aligned to an "alphabetic" baseline, the
>  northern indic glyphs are aligned to a "hanging" baseline and the
>  far-eastern glyphs are aligned to an "ideographic" baseline.
>
>The key here is "within a line of text having a single font-size".  The
>need to have a single font size for baseline alignment is mentioned in
>the text.html#FontsTablesBaselines section too.
>
>So I would suggest either dropping text-align-07-t and text-align-08-b
>back to unapproved for now, or editing them to use the correct baselines
>(if people are amenable to the test being changed at this late stage).

I don't understand what you're trying to say here? What correct baselines?

Also, mixing font sizes and baseline sets for the different font sizes is
covered pretty well in XSL-FO IIRC.

Alex

>-- 
>Cameron McCormack ≝ http://mcc.id.au/
>
>
>
Received on Tuesday, 14 December 2010 09:43:33 GMT

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