[Sugar-devel] Preview field in web activities

[Manuel Quiñones]

2013/9/9 Suraj K S <suraj.gillespie at gmail.com>:
> I'm able to capture the screen shot of the activity using
> http://html2canvas.hertzen.com/
>
> It captures the screenshot and returns a canvas.
>
> Now to convert it to a png image I'm using:
>
> var previewImage = canvas.toDataURL("image/png;base64");

I'm using canvas.toDataURL() in Paint Web:

https://github.com/manuq/paint-web

Can you check if you have the problem there?

>
> The problem with this is that it throws a
>
> SECURITY_ERR: DOM Exception 18
>
> After reading a bit on this error, got to know that when the canvas has an
> element whose origin-clean flag is set to false, it would generate this
> error.
> Not able to understand why exactly this is happening in Sugar though.
>
> Is there a way around this?



-- 
.. manuq ..