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Re: [whatwg] canvas context "alpha" attribute

From: Rik Cabanier <cabanier@gmail.com>
Date: Wed, 12 Mar 2014 11:07:56 -0700
Message-ID: <CAGN7qDB0tC+v3CmwZYJ=MgwdQ2-o00N9aTRUKiar+4gDpj8aZw@mail.gmail.com>
To: Ian Hickson <ian@hixie.ch>
Cc: "whatwg@whatwg.org" <whatwg@whatwg.org>
On Wed, Mar 12, 2014 at 10:49 AM, Ian Hickson <ian@hixie.ch> wrote:

> On Wed, 12 Mar 2014, Rik Cabanier wrote:
> >
> > About a year ago, Google and mozilla proposed the "alpha" attribute as an
> > option when you create the canvas context. The wiki explains the feature
> > very well. [1]
> > Since then, Google has implemented and shipped this [2][3]. There is a
> > proposal to implement [4] and a patch [5] for firefox.
> >
> > An author can "feature test" by setting alpha to false and reading a
> pixel
> > in the context. If the pixel comes back with an alpha of 0, it means that
> > it is not supported.
> >
> > Could this be added to the HTML specification? [6]
>
> It's being tracked here:
>
>    https://www.w3.org/Bugs/Public/show_bug.cgi?id=23515
>
> It's awaiting interest from a second vendor. It's not clear to me from the
> Mozilla bug whether Mozilla engineers actually support this.
>

Sorry.
I copied the wrong link. This is the correct one:
https://groups.google.com/forum/#!topic/mozilla.dev.platform/5i8H-xKGtEg
Received on Wednesday, 12 March 2014 18:08:21 UTC

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