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Re: [whatwg] A question about the drawimage() canvas function

From: Rik Cabanier <cabanier@gmail.com>
Date: Fri, 1 Mar 2013 20:35:17 -0800
Message-ID: <CAGN7qDC4Fz8-RuH5joM948yakZy-GwANz4P6ohc8ny62A4urTg@mail.gmail.com>
To: Glenn Maynard <glenn@zewt.org>
Cc: (wrong string) Ž‹“— <wang.tietao@outlook.com>, WHAT Working Group <whatwg@whatwg.org>
On Fri, Mar 1, 2013 at 5:41 PM, Glenn Maynard <glenn@zewt.org> wrote:

> On Fri, Mar 1, 2013 at 4:45 PM, Rik Cabanier <cabanier@gmail.com> wrote:
>
>> Sorry about being unclear. Yes, I meant in addition of.
>> So:
>> - add your suggested step 1
>> - change HTMLImageElement from original step 2 to CanvasImageSource
>>
>
> "image" is always a CanvasImageSource, so if this is what was intended it
> would just omit the type check entirely.
>

Agreed


>
> But why does it throw this exception in the first place?  It's a weird
> special case.  Blitting a zero-size image should do nothing, just like
> drawImage(src, 0, 0, 0, 0).


I agree. It seems odd...
Maybe it's just because that was the way it was implemented in WK.
Received on Saturday, 2 March 2013 04:35:41 GMT

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