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Re: Canvas gradients should not be optional

From: Ian Hickson <ian@hixie.ch>
Date: Fri, 1 Feb 2008 05:48:56 +0000 (UTC)
To: Philip Taylor <pjt47@cam.ac.uk>
Cc: HTML WG <public-html@w3.org>
Message-ID: <Pine.LNX.4.62.0802010548410.3212@hixie.dreamhostps.com>

On Fri, 14 Dec 2007, Philip Taylor wrote:
> The spec says:
>   "Support for actually painting gradients is optional. Instead of 
> painting the gradients, user agents may instead just paint the first 
> stop's color."
> Firefox, Opera and Safari support gradients. Rhino Canvas does too. The 
> recent (unreleased) Konqueror with <canvas> also does gradients. 
> ExplorerCanvas attempts to support gradients, despite getting them 
> utterly wrong - presumably it was decided that buggy gradient support 
> was better than conformingly following the spec's option of no 
> gradients. I can't remember any other implementations now.
> Optional features are harder to test, and a worse implementation (which 
> lacks the feature entirely) could claim better conformance than a better 
> implementation (which has the feature, and maybe fails in a few obscure 
> edge cases). Since every implementer has decided to implement gradients, 
> it seems there is no compelling reason to not implement it. So, the 
> "Support for actually painting gradients is optional" paragraph should 
> be removed.


Ian Hickson               U+1047E                )\._.,--....,'``.    fL
http://ln.hixie.ch/       U+263A                /,   _.. \   _\  ;`._ ,.
Things that are impossible just take longer.   `._.-(,_..'--(,_..'`-.;.'
Received on Friday, 1 February 2008 05:49:06 UTC

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