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	GdkPixbuf *screenshot, *image;	GError *error = NULL;	GThread *thread;	GeglNode *root, *load, *border, *shadow, *save;	GeglProcessor *processor;	gchar *filename;	GeglRectangle roi;	gdouble progress;		filename = g_strconcat (G_OBJECT_TYPE_NAME (widget),							".png", NULL);				screenshot = get_pixbuf (widget);		root = gegl_node_new ();	load = gegl_node_new_child (root,								 "operation", "pixbuf",								 "pixbuf", screenshot,								 NULL);		shadow = gegl_node_new_child (root,								  "operation", "dropshadow",								  "opacity", .5,								  "radius", 6.,								  NULL);		save = gegl_node_new_child (root,								"operation", "png-save",								"path", filename,								NULL);		gegl_node_link_many (load, shadow,  save, NULL);		processor = gegl_node_new_processor (save, NULL);		while (gegl_processor_work (processor, &progress))		g_debug ("%3.2f%% complete.", progress * 100);		gegl_processor_destroy (processor);	g_object_unref (screenshot);	g_free (filename);	g_debug ("Saved.");