graph_wrapper.h

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#ifndef _GRAPH_WRAPPER_H_
#define _GRAPH_WRAPPER_H_

#include <iostream>
#include <graphviz/gvc.h>
#include <graphviz/graph.h>
#include <boost/lexical_cast.hpp>
#include <algorithm>
#include <vector>
#include <map>

using namespace std;
using namespace boost;
                  
class GVGraph
{
        public:
                static const double DotDefaultDPI;

                GVGraph(string name,double node_size=50);
                
                ~GVGraph();
                
                
                void addNode(const string& name);
                
                void addNodes(vector<string>& names);
                
                void removeNode(const string& name);
                
                void clearNodes();

                Agnode_t*selectNode(string&name);
                
                Agedge_t*selectEdge(string&source,string&target);
                
                int setNodeAttribute(string name,string attribute,string value);
                
                int setEdgeAttribute(string source,string target,string attribute,string value);
                
                void addEdge(const string& source, const string& target);
                
                void removeEdge(const string& source, const string& target);
                
                void removeEdge(const pair<string, string>& key);
                
                void setRootNode(const string& name);
                
                void applyLayout();
                
                void freeLayout();
                
                void startRender();
                
                GVC_t*getGVCcontext(void);
                
        private:
                Agraph_t* _agopen(string name,int kind);
                
                Agsym_t* _agnodeattr(string name,string value);
                
                Agsym_t* _agedgeattr(string name,string value);
                
                string _agget(void*object,string attr,string alt=string());

                int _agset(void*object,string attr,string value);
                
                Agnode_t* _agnode(string name);
                
                int _gvLayout(GVC_t*gvc,graph_t*graph,string engine);           
                
                GVC_t*_context;
                
                Agraph_t*_graph;
                
                map<string, Agnode_t*> _nodes;
                
                map<pair<string,string>, Agedge_t*> _edges;
};

#endif