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Re: canvas text: ctx.font='inherit'

From: Ian Hickson <ian@hixie.ch>
Date: Sat, 1 Aug 2009 08:16:07 +0000 (UTC)
To: Simon Pieters <simonp@opera.com>
Cc: Boris Zbarsky <bzbarsky@mit.edu>, "public-html@w3.org" <public-html@w3.org>
Message-ID: <Pine.LNX.4.62.0908010807510.28566@hixie.dreamhostps.com>
On Sat, 1 Aug 2009, Simon Pieters wrote:
> On Sat, 01 Aug 2009 03:13:09 +0200, Boris Zbarsky <bzbarsky@mit.edu> wrote:
> > Ian Hickson wrote:
> > 
> > So basically the behavior should be as Firefox now except:
> > 
> > 1)  Treat inherit and initial as CSS syntax errors.
> > 2)  Always use "font: 10px sans serif" as the parent's font, not
> >      just when the <canvase> is outside of a DOM tree.
> > 
> > Right?
> ...except when using a relative unit (em, ex, %) or using a relative 
> keyword (smaller, larger, bolder, lighter), in which case you inherit 
> from the canvas element.
> I think it's weird to sometimes inherit from the canvas element and 
> sometimes use 10px sans-serif. If we're going to use 10px sans-serif, 
> could we make the relative units relative to 10px sans-serif instead of 
> the canvas element?

The spec never uses 10px sans-serif except as the default, unless I'm 

> <canvas dir> (or rather the canvas element's 'direction') affects canvas 
> text rendering. Maybe direction should be an attribute on the 2d context 
> instead for consistency with .font?

I considered that, but what would you make the default? The only logical 
answer seems to be "use the direction property on the <canvas>", at which 
point all you've really done is introduced a new attribute that adds yet 
another layer to something that already has far too many.

Ian Hickson               U+1047E                )\._.,--....,'``.    fL
http://ln.hixie.ch/       U+263A                /,   _.. \   _\  ;`._ ,.
Things that are impossible just take longer.   `._.-(,_..'--(,_..'`-.;.'
Received on Saturday, 1 August 2009 08:16:43 UTC

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