[whatwg] Proposal to remove a paragraph from canvas spec

Jonas Sicking jonas at sicking.cc
Thu May 12 21:45:01 PDT 2011

On Thu, May 12, 2011 at 9:32 PM, Robert O'Callahan <robert at ocallahan.org> wrote:
> On Fri, May 13, 2011 at 3:19 PM, Ian Hickson <ian at hixie.ch> wrote:
>> On Wed, 4 May 2011, Robert O'Callahan wrote:
>> > 4) remove the no-shadow special case, but add a special case to not draw
>> > shadows for operators other than source-over
>> >
>> > I think I prefer #4. I have yet to hear of any use-case that needs
>> > shadows with an operator other than source-over, and it would probably
>> > simplify the spec and implementations a little bit.
>> #4 seems fine to me. Does anyone object to #4? I propose waiting until
>> browser vendors implement this (to test that it is not a compatibility
>> problem), and then updating the spec accordingly.
> Can you put a note in the spec that we're thinking of changing this
> behavior, so developers are less likely to start depending on it, and we've
> got some cover in case it breaks some esoteric stuff that doesn't matter for
> compat?


This is in general something we need to do more of. Migrating to
better APIs is made much harder by having the spec say something

(For what it's worth, I really wish we would do this for W3C bug 11960)

/ Jonas

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