Re: GtkDrawingArea & Zoom

[Jim Edwards <jimedwards altavista com>]

You might consider using GtlGLArea which inherits from GtkDrawingArea and
gives you all of the functionality of OpenGL.
GtkGLArea is distributed seperatly from:

 http://www.student.oulu.fi/~jlof/gtkglarea/

and is also available vis cvs pserver at gnome.org

Jim



Jean-Christophe Berthon wrote:

> Hello,
>
> I want to use a GtkDrawingArea (I'll have lots of data represent by
> rectangles, lines and points all spread over) and I'm thinking of
> implementing a zoom feature.
>
> I would like to know if there is no particular technics to do such a job?
> Like if it is rather good to multiply the size of the Drawing Area by the
> zoom factor and doing the same to the coordinates of the darwn objects?
>
> If you encountered the same task, what solution did you choose and why?
>
> Best regards,
> ---
> Jean-Christophe Berthon
>
> Cap Gemini -- Ernst & Young
> France
> Skill Integration System -- Image Quality
> Email: Jean-Christophe Berthon cgey com
> Tel: (+33) 561 31 6639
>
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