Re: GDK: fast image scaling - how?

[Tristan Van Berkom <vantr touchtunes com>]

there's a bunch of gtk+ packages that 
go together:

-glib/gobject
-pango
-atk
-gdk
-gtk
-gdk-pixbuf
(all of which ofcourse
depend on pkg-config)

theese functions are found in
`gdk-pixbuf'.

documentation is at:
http://developer.gnome.org/doc/API/2.0/gdk-pixbuf/index.html
        and
http://developer.gnome.org/doc/API/2.0/gdk/gdk-Pixbufs.html

And I believe theese functions are available 
in 1.2 also (I'm currently useing 1.3.5 dev
release for some projects).


Cheers,
                -Tristan

RevX gmx at wrote:
> Hi Tristan,
>
> the function header you've sent me looks like the one I need,
> BUT I haven't found it in the GDK files that came with gtk+ 1.2.10!
> I also haven't found gdk-pixbuf.h. Maybe this is for gtk+ 2 only?
> I've tried to look up the API reference for gtk+ 2 but couldn't
> find that scaling function, too. Undocumented?
>
> Is there a way to install the "new" GDK (2.0?) in an 1.2 installation?
> Or: can you supply the source code for that function?
>
> Anyways, thanks for helping!
>
> Michael.
>
> >       This is the most basic methid I know.
> > (You probably want GDK_INTERP_NEAREST
> > but GDK_INTERP_HYPER is working good
> > for me with downscaling).
> >
> > ****** extract from gdk-pixbuf.h *********
> >
> > /* Interpolation modes */
> > typedef enum {
> >       GDK_INTERP_NEAREST,
> >       GDK_INTERP_TILES,
> >       GDK_INTERP_BILINEAR,
> >       GDK_INTERP_HYPER
> > } GdkInterpType;
> >
> >
> > GdkPixbuf *gdk_pixbuf_scale_simple           (const GdkPixbuf *src,
>                               int              dest_width,
> >
>                               int              dest_height,
> >
>                               GdkInterpType    interp_type);
> > ******* end extract *********
>
>
> --
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