HTML Canvas performance in the Browse activity

Mihai Sucan mihai.sucan at
Sun May 31 15:12:36 EDT 2009

Hello Tomeu!

Le Sun, 31 May 2009 20:10:49 +0300, Tomeu Vizoso <tomeu at> a  

> On Sun, May 31, 2009 at 18:48, Mihai Sucan <mihai.sucan at> wrote:
>> Hello everyone!
>> I am Mihai Sucan, and I am working over the summer to develop and
>> integrate a paint tool [1] into Moodle. [2] I am also involved in doing
>> performance testing on the XO laptop.
> Thanks a lot for your nice work untangling this mess. I'm forwarding
> this email to sugar-devel because I guess you want the Sugar
> developers be aware of this.

You're all welcome. ;)

> Let me ask you a couple of questions:
> - which version(s) of Sugar targets your project?

I am not intimate with the development cycle and work-flow of the OLPC XO.  
I learned sufficiently to see it's Fedora Core-based, and that Sugar is  
becoming distro agnostic.

Thus, my answer is simply limited to my current usage of the XO. I want  
PaintWeb to work well on the OLPC XO-1 laptop, with the latest stable OS  
release (that's 8.2.1).

> - already have an idea about how are going to be deployed any
> modifications that result from this?

The modifications resulting from this work are already deployed into  
PaintWeb. You can try the last working SVN trunk snapshot at:

The paintweb.js file contains the updateCanvasScaling() function which  
does the Canvas scaling.

The application is working fine on the XO.

Best regards,

Mihai Sucan

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