Re: Is it possible to implement Zoom/Shrink of a backing bitmap using only GTK+/GDK/GLIB ?

[Carlos Eduardo Rodrigues Diógenes <cerdiogenes yahoo com br>]

Hi,

GdkPixbuf was made for you ;-)

Take a look in it's API at
http://developer.gnome.org/doc/API/2.0/gdk-pixbuf/index.html

For creating the pixbuf, read
http://developer.gnome.org/doc/API/2.0/gdk-pixbuf/gdk-pixbuf-creating.html#gdk-pixbuf-new

Best regards,
Carlos.

Em Qui, 2006-05-04 Ãs 14:32 -0400, James Scott Jr escreveu:
> Folks,
>
> I am writing a simple GTK+ line graph codeset to use in my GTK
> applications; It's done but not a widget yet.
>
> After reading several books and googling I still have this question.
>
> Question: Is it possible using only GTK+/GDK/GLIB to create a 2000x2000
> pixbuf for drawing and have the expose-event scale it to the current
> window size?
>
> It seems a gnome-canvas has the notion of world coordinates and
> transforms; but I don't see this in regular GTK/GDK/GLIB.  I have
> already done this using OpenGL and would like to simply use GTK without
> all the fluff.
>
> If its possible/practical - can someone point me to the right source to
> learn how to do this zooming thing? or even suggest a few api as a
> starting point.  I looked at "void gdk_region_shrink(GdkRegion *region,
> gint dx, gint dy);", but I'm not sure it will do what I'm after.
>
>
> James,
>
> ________________________________________________________________________
>
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>
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-- 
Carlos Eduardo Rodrigues DiÃgenes