[whatwg] Font metrics
Greg Brown
gkbrown at mac.com
Sat Apr 3 07:23:39 PDT 2010
OK, that makes sense. Thanks for the info.
On Apr 2, 2010, at 5:39 PM, Ian Hickson wrote:
> On Fri, 2 Apr 2010, Greg Brown wrote:
>>
>> In reviewing the current draft API for the <canvas> element
>> (http://www.whatwg.org/specs/web-apps/current-work/multipage/the-canvas-element.html),
>> I noticed that there is no support for obtaining font metrics such as
>> ascent, descent, leading, and bounding box. It seems like the most
>> recent discussion regarding font metrics took place a couple of years
>> ago:
>>
>> http://lists.whatwg.org/htdig.cgi/whatwg-whatwg.org/2008-May/014706.html
>>
>> But even that thread refers to discussions from 2006.
>>
>> I would personally like to see support for these values added to the
>> API. Is this something that could be considered for the final spec? What
>> are the major obstacles to providing such support? I would think that
>> this information could be easily obtained using the underlying graphics
>> API, but maybe I am missing something.
>
> It's something we'll probably add in due course, but for now we're waiting
> for the existing canvas API stuff to be implemented properly. We can't add
> too much stuff at once, because if we do the browser vendors get so far
> behind that they end up either rushing to catch up (leading to more bugs),
> or skipping parts in order to get the rest done right (leading to parts of
> the spec being ignored).
>
> --
> Ian Hickson U+1047E )\._.,--....,'``. fL
> http://ln.hixie.ch/ U+263A /, _.. \ _\ ;`._ ,.
> Things that are impossible just take longer. `._.-(,_..'--(,_..'`-.;.'
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