[whatwg] Why does CanvasRenderingContext2D.drawImage not draw a video's poster?

Mark Callow callow_mark at hicorp.co.jp
Wed Jul 18 21:14:26 PDT 2012

On 18/07/2012 13:57, Charles Pritchard wrote:

> We don't have events based on poster, so we don't know whether or not it's been loaded.

On 19/07/2012 09:46, Charles Pritchard wrote:
> I'm not opposed to the idea, but I'm failing to see the benefit.
> Still, if there's going to be one, we're going to need an
> onposterloaded event.

I don't understand these concerns. Step 4 of the algorithm to be run
when the video element is created or the @poster attribute is set,
changed or removed says:

    the resulting absolute URL
    from the element's |Document
    This must delay the load event
    of the element's document.

So once the documented is loaded, the poster, if there is one, will be



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