Re: gtkmm website source link

[Lebon Sylvain <lebon efrei Fr>]

Forget my question i've figured it out.
the rowstride value was the rox stride ou the old image so ... ( i'm 
french so the time to figure out what does mean rowstride )

so sorry to keep you busy for nothing

Lebon Sylvain



Lebon Sylvain a écrit :

> Hi,
>
> I use a gdk pixbuff to work on jpeg. It works perfectlly. I can get a 
> guint8 * table, and put the pixels in matrix to work with the 
> red,green,blue pixels. And then do the oposite create a gtk pixbuff 
> with my matrices.
>
> All is ok if i don't change the size of the image: i want to rotate my 
> matrice and then to use pixbuf=create_from_data(..); with a table of 
> guint. And that do not work.
>
> Could someone help me ? (see a part of my code just below )
>
>
> Thank you very much.
> LEBON Sylvain
> ____
>
> int val=r.get_hauteur()*r.get_largeur()*3;
>
>    guint8 suite[val];
>    int i=0,x,y;
>    for( y=0;y<r.get_hauteur();y++)
>    {
>        for( x=0;x<r.get_largeur();x++)
>        {
>                      
> if(r.get_pixel(x,y)!=-1)suite[i]=r.get_pixel(x,y);i++;
>            if(v.get_pixel(x,y)!=-1)suite[i]=g.get_pixel(x,y);i++;
>            if(b.get_pixel(x,y)!=-1)suite[i]=b.get_pixel(x,y);i++;
>        }
>    }
>      Glib::RefPtr<Gdk::Pixbuf>      
> new_pix=Gdk::Pixbuf::create_from_data(suite,pixbuf->get_colorspace(),false,8,r.get_largeur(),r.get_hauteur(),pixbuf->get_rowstride()); 
>
>    new_pix->save(nom,"jpeg");
>
> _______________________________________________
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> http://mail.gnome.org/mailman/listinfo/gtkmm-list
>  

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