Loads a new gdkpixbuf.pixbuf.Pixbuf from filename and returns it. This pixbuf is scaled
from the size indicated by the file by a factor of x_zoom and y_zoom. If the
resulting pixbuf would be larger than max_width/max_heigh it is uniformly scaled
down to fit in that rectangle. The caller must assume the reference to the
returned pixbuf. If an error occurred, error is set and NULL is returned.
Loads a new gdkpixbuf.pixbuf.Pixbuf from filename and returns it. This pixbuf is scaled from the size indicated by the file by a factor of x_zoom and y_zoom. If the resulting pixbuf would be larger than max_width/max_heigh it is uniformly scaled down to fit in that rectangle. The caller must assume the reference to the returned pixbuf. If an error occurred, error is set and NULL is returned.