[whatwg] Feature proposal - add method to CanvasRenderingContext2D

[František Řezáč]

Yes, it works. I failed to spot that it's possible to put data url to
Image.src, sorry.

On Wed, Mar 3, 2010 at 3:33 PM, Philip Taylor <excors+whatwg at gmail.com> wrote:
> On Wed, Mar 3, 2010 at 1:08 PM, František Řezáč
> <frantisek.rezac at calavera.info> wrote:
>> Description
>> add overload of (or add similarly called) method "createImageData" to
>> interface CanvasRenderingContext2D which would take two arguments:
>> - encodedImageBinaryData
>> - dataMimeType
>> which are rather self explanatory.
>>
>> Reason
>> The reason is to be able to supply output of the future File API
>> standard (http://www.w3.org/TR/FileAPI/) into canvas.
>
> The canvas API already lets you do:
>
>  var img = new Image();
>  img.onload = function() {
>    ctx.drawImage(img, 0, 0);
>    // do processing on the canvas
>  };
>  img.src = 'data:image/png;base64,...'; // get this string from
> readAsDataURL etc
>
> Is that sufficient for your use case?
>
> --
> Philip Taylor
> excors at gmail.com
>



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