umbrello / autolayout
graphvizgraph.cpp

00001 /***************************************************************************
00002  *  copyright (C) 2005
00003  *  Umbrello UML Modeller Authors <uml-devel @uml.sf.net>
00004  *                                                                         *
00005  *   This program is free software; you can redistribute it and/or modify  *
00006  *   it under the terms of the GNU General Public License as published by  *
00007  *   the Free Software Foundation; either version 2 of the License, or     *
00008  *   (at your option) any later version.                                   *
00009  *                                                                         *
00010  ***************************************************************************/
00011 #include "graphvizgraph.h"
00012 
00013 #include <graphviz/graph.h>
00014 #include <kdebug.h>
00015 
00016 #define DPI 96
00017 
00018 char* _strcpy(const char* name)
00019 {
00020     char *a;
00021     strlen(name);
00022     a=new char[strlen(name)+1];
00023     a=strcpy(a,name);
00024     return a;
00025 }
00026 namespace Autolayout
00027 {
00028 
00033 GraphvizGraph::GraphvizGraph()
00034         : Autolayout::Graph()
00035 {
00036     aginit();
00037     empty_flag=true;
00038     _agraph = agopen("graph",AGDIGRAPH);
00039     a_width= agnodeattr(_agraph, "width", "");;
00040     a_height= agnodeattr(_agraph, "height", "");
00041     a_label = agnodeattr(_agraph, "label", "");
00042     a_weight= agedgeattr(_agraph,"weight","");
00043     agnodeattr(_agraph, "fixedsize", "true");
00044     agnodeattr(_agraph, "margin", "0.01,0.01");
00045     agnodeattr(_agraph, "shape", "box");
00046     agraphattr(_agraph, "dpi", "DPI/0");
00047 
00048 
00049 }
00050 
00051 
00052 GraphvizGraph::~GraphvizGraph()
00053 {
00054     nodelist.clear();
00055     agclose(_agraph);
00056     /* Free graph structures */
00057     //#ifndef internal_renderizer
00058 
00059     /* Clean up output file and errors */
00060     // dotneato_terminate(gvc);
00061     //dotneato_eof(gvc);
00062 
00063 }
00064 
00065 
00066 
00067 
00068 void GraphvizGraph::addEdge(const char* nodea, const char* nodeb, int weight)
00069 {
00070     char *a=_strcpy(nodea);
00071     char *b=_strcpy(nodeb);
00072     char *weight_str;
00073     asprintf(&weight_str,"%d",weight);
00074     Agedge_t* e= agedge(_agraph,agnode(_agraph,a),agnode(_agraph,b));
00075     delete[](a);
00076     delete[](b);
00077     agxset(e,a_weight->index,weight_str);
00078 
00079 
00080 }
00081 
00082 void GraphvizGraph::addNode(const char* name, int width, int height)
00083 {
00084     char *a =_strcpy(name);
00085     char *w_str,*h_str;
00086     Agnode_t* node =agnode(_agraph,a);
00087     delete[](a);
00088     agxset(node, a_label->index, "a");
00089     asprintf(&h_str,"%f",((float)height)/DPI);
00090     asprintf(&w_str,"%f",((float)width)/DPI);
00091     agxset(node, a_height->index,h_str);// sprintf("%d",height));
00092     free (h_str);
00093     agxset(node, a_width->index, w_str);
00094     free (w_str);
00095     empty_flag = false;
00096 }
00097 
00098 
00099 void Autolayout::GraphvizGraph::setCompressShapes( bool b )
00100 {
00101     if (empty())
00102     {
00103         if (b) agraphattr(_agraph,"ratio","compress");
00104         else agraphattr(_agraph,"ratio","");
00105     }
00106 }
00107 
00108 void Autolayout::GraphvizGraph::setCenterDiagram( bool b )
00109 {
00110     if (empty())
00111     {
00112         if (b)  agraphattr(_agraph,"center","true");
00113         else  agraphattr(_agraph,"center","false");
00114     }
00115 }
00116 
00117 void Autolayout::GraphvizGraph::setShapeSeparation( int i )
00118 {
00119     char* a;
00120     asprintf(&a,"%f",((float) i)/10.0);
00121     agraphattr(_agraph,"nodesep",a);
00122     free (a);
00123 }
00124 
00125 bool Autolayout::GraphvizGraph::empty( )
00126 {
00127     return empty_flag;
00128 }
00129 
00130 Autolayout::Node* Autolayout::GraphvizGraph::getNode( const char * arg1 )
00131 {
00132     char *a = _strcpy(arg1);
00133     Autolayout::GraphvizNode* b=
00134         new Autolayout::GraphvizNode(agnode(_agraph,a));
00135     delete[](a);
00136     nodelist.push_back(b);
00137     return b;
00138 }
00139 
00140 void GraphvizGraph::setCanvas( Autolayout::Canvas * canvas)
00141 {
00142     char buf[100];
00143     sprintf(buf,"%f,%f",((float)canvas->getMaxX()/DPI),((float)canvas->getMaxY()/DPI));
00144     kDebug() << "size: " << buf << endl;
00145     agraphattr(_agraph, "size", buf);
00146     agraphattr(_agraph, "page", buf);
00147 }
00148 
00149 }  // end namespace Autolayout
00150
umbrello API Documentation

graphvizgraph.cpp
