Re: gtkmm website source link

[Lebon Sylvain <lebon efrei Fr>]

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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