gboolean image_get_desaturate(ImageWindow *imd);
void image_set_overunderexposed(ImageWindow *imd, gboolean overunderexposed);
gboolean image_get_overunderexposed(ImageWindow *imd);
+void image_set_ignore_alpha(ImageWindow *imd, gboolean ignore_alpha);
/* zoom */
void image_zoom_adjust(ImageWindow *imd, gdouble increment);