On 28.1.2012 10:19, Kyle Huey wrote:
2012/1/28 Bronislav Klučka <[email protected]
<mailto:[email protected]>>
Hello,
would it be possible to have Image.toBlob() function? We are
introducing Canvas.toBlob(), image (and maybe video, audio) would
be nice addition
Brona
Proposing a more detailed spec would be a good place to start. Some
example questions:
1. What does <img>.toBlob() do if the image failed to load?
2. Should <img>.toBlob() respect CORS?
3. Does <img>.toBlob() take a content type argument like the others?
If so, what does <img src="foo.jpg">.toBlob("image/png") do?
4. Is <img>.toBlob() asynchronous like <canvas>.toBlob()?
I think the idea of implementing <img>.toBlob() is fine, but we need
to spec out the behavior first.
- Kyle
Sure, sure just throwing the idea here.
I think whatever can be followed according to existing should be (the
same signature as Canvas.toBlob, respecting crossorigin attribute, CORS)
If there is failure possible in Canvas.toBlob(), this method should
follow it, if not, error should be thrown once called on error image
<img src="foo.jpg">.toBlob("image/png") should return PNG
Basically the idea is, that this should replace for creating canvas,
painting image on such canvas and calling canvas.toBlob().
Brona
