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gvc

NAME

libgvc - Graphviz context library

SYNOPSIS

 
 #include <graphviz/gvc.h>
 
 /* set up a graphviz context */
 extern GVC_t *gvNEWcontext(char **info, char *user);
 extern char *gvUsername(void);
 
 /*  set up a graphviz context - alternative */
 /*     (wraps the above two functions using info built into libgvc) */
 extern GVC_t *gvContext(void);
 
 /* parse command line args - minimally argv[0] sets layout engine */
 extern int gvParseArgs(GVC_t *gvc, int argc, char **argv);
 extern graph_t *gvNextInputGraph(GVC_t *gvc);
 
 /* Compute a layout using a specified engine */
 extern int gvLayout(GVC_t *gvc, graph_t *g, char *engine);
 
 /* Compute a layout using layout engine from command line args */
 extern int gvLayoutJobs(GVC_t *gvc, graph_t *g);
 
 /* Render layout into string attributes of the graph */
 extern void attach_attrs(graph_t *g);
 
 /* Parse an html string */
 extern char *agstrdup_html(char *s);
 extern int aghtmlstr(char *s);
 
 /* Render layout in a specified format to an open FILE */
 extern int gvRender(GVC_t *gvc, graph_t *g, char *format, FILE *out);
 
 /* Render layout in a specified format to an open FILE */
 extern int gvRenderFilename(GVC_t *gvc, graph_t *g, char *format, char *filename);
 
 /* Render layout according to -T and -o options found by gvParseArgs */
 extern int gvRenderJobs(GVC_t *gvc, graph_t *g);
 
 /* Clean up layout data structures - layouts are not nestable (yet) */
 extern int gvFreeLayout(GVC_t *gvc, graph_t *g);
 
 /* Clean up graphviz context */
 extern int gvFreeContext(GVC_t *gvc);
 
 
 

DESCRIPTION

libgvc provides a context for applications wishing to manipulate and render graphs. It provides a command line parsing, common rendering code, and a plugin mechanism for renderers.

SEE ALSO

dot(1), neato(1), libcdt(3) libgraph(3)

AUTHOR

John Ellson (ellson@research.att.com), AT&T