static void
gegl_introspect_load_cache (GeglProperties *op_introspect)
{
GeglBuffer *new_buffer = NULL;
GeglNode *png_load = NULL;
GeglNode *buffer_sink = NULL;
gchar *dot_string = NULL;
gchar *png_filename = NULL;
gchar *dot_filename = NULL;
gchar *dot_cmd = NULL;
if (op_introspect->user_data || op_introspect->node == NULL)
return;
/* Construct temp filenames */
dot_filename = g_build_filename (g_get_tmp_dir (), "gegl-introspect.dot", NULL);
png_filename = g_build_filename (g_get_tmp_dir (), "gegl-introspect.png", NULL);
/* Construct the .dot source */
dot_string = gegl_to_dot (GEGL_NODE (op_introspect->node));
g_file_set_contents (dot_filename, dot_string, -1, NULL);
/* Process the .dot to a .png */
dot_cmd = g_strdup_printf ("dot -o %s -Tpng %s", png_filename, dot_filename);
if (system (dot_cmd) == -1)
g_warning ("Error executing GraphViz dot program");
/* Create a graph that loads the png into a GeglBuffer and process
* it
*/
png_load = gegl_node_new_child (NULL,
"operation", "gegl:png-load",
"path", png_filename,
NULL);
buffer_sink = gegl_node_new_child (NULL,
"operation", "gegl:buffer-sink",
"buffer", &new_buffer,
NULL);
gegl_node_link_many (png_load, buffer_sink, NULL);
gegl_node_process (buffer_sink);
op_introspect->user_data= new_buffer;
/* Cleanup */
g_object_unref (buffer_sink);
g_object_unref (png_load);
g_free (dot_string);
g_free (dot_cmd);
g_free (dot_filename);
g_free (png_filename);
}
/**
* gegl_dot_node_to_png:
* @node: Node to depict graph for.
* @png_path: Path of the png to write.
*
* This is for debug purposes, meant to be invoked directly from a
* debugger.
**/
void
gegl_dot_node_to_png (GeglNode *node,
const gchar *png_path)
{
gchar *dot_string = NULL;
gchar *dot_filename = NULL;
gchar *dot_cmd = NULL;
/* Get dot string */
dot_string = gegl_to_dot (node);
/* Write it to a file */
dot_filename = g_build_filename (g_get_tmp_dir (), "gegl-dot.dot", NULL);
g_file_set_contents (dot_filename, dot_string, -1, NULL);
/* Create a png from it */
dot_cmd = g_strdup_printf ("dot -o %s -Tpng %s", png_path, dot_filename);
if (system (dot_cmd) == -1)
g_warning ("Error executing GraphViz dot program");
}