#include "graph_displayer_canvas.h"

 #include <cmath>

 GraphDisplayerCanvas::GraphDisplayerCanvas(NoteBookTab & mainw) :

   nodesmap(mainw.mapstorage.graph), edgesmap(mainw.mapstorage.graph), edgetextmap(mainw.mapstorage.graph),

   nodetextmap(mainw.mapstorage.graph), displayed_graph(*(root()), 0, 0),

   isbutton(0), active_item(NULL), target_item(NULL), nodemap_to_edit(""),

   edgemap_to_edit(""), autoscale(true), zoomtrack(false), radius_size(20), edge_width(10), mytab(mainw)

 {

   //base event handler is move tool

   actual_handler=signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::moveEventHandler), false);

   actual_tool=MOVE;

   active_node=INVALID;

   active_edge=INVALID;

   forming_edge=INVALID;

 }

 GraphDisplayerCanvas::~GraphDisplayerCanvas()

 {

   for (NodeIt n((mytab.mapstorage).graph); n != INVALID; ++n)

     {

       delete nodesmap[n];

       delete nodetextmap[n];

     }

   for (EdgeIt e((mytab.mapstorage).graph); e != INVALID; ++e)

     {

       delete edgesmap[e];

       delete edgetextmap[e];

     }

 }

 void GraphDisplayerCanvas::propertyChange(bool itisedge, int prop)

 {

   if(itisedge)

     {

       propertyUpdate(Edge(INVALID), prop);

     }

   else

     {

       propertyUpdate(Node(INVALID), prop);

     }

 }

 void GraphDisplayerCanvas::propertyUpdate(Edge edge)

 {

   for(int i=0;i<EDGE_PROPERTY_NUM;i++)

     {

       propertyUpdate(edge, i);

     }

 }

 void GraphDisplayerCanvas::propertyUpdate(Node node)

 {

   for(int i=0;i<NODE_PROPERTY_NUM;i++)

     {

       propertyUpdate(node, i);

     }

 }

 void GraphDisplayerCanvas::propertyUpdate(Node node, int prop)

 {

   //dummy=dummy;

   std::string mapname=mytab.getActiveNodeMap(prop);

   if(mapname!="")

     {

       if( ( ((mytab.mapstorage).nodemap_storage).find(mapname) != ((mytab.mapstorage).nodemap_storage).end() ) )

 	{

 	  switch(prop)

 	    {

 	    case N_RADIUS:

 	      changeNodeRadius(mapname, node);

 	      break;

 	    case N_COLOR:

 	      changeNodeColor(mapname, node);

 	      break;

 	    case N_TEXT:

 	      changeNodeText(mapname, node);

 	      break;

 	    default:

 	      std::cerr<<"Error\n";

 	    }

 	}

     }

   else //mapname==""

     {

       Node node=INVALID;	

       switch(prop)

 	{

 	case N_RADIUS:

 	  resetNodeRadius(node);

 	  break;

 	case N_COLOR:

 	  resetNodeColor(node);

 	  break;

 	case N_TEXT:

 	  resetNodeText(node);

 	  break;

 	default:

 	  std::cerr<<"Error\n";

 	}

     }

 }

 void GraphDisplayerCanvas::propertyUpdate(Edge edge, int prop)

 {

   //dummy=dummy;

   std::string mapname=mytab.getActiveEdgeMap(prop);

   if(mapname!="")

     {

       if( ( ((mytab.mapstorage).edgemap_storage).find(mapname) != ((mytab.mapstorage).edgemap_storage).end() ) )

 	{

 	  switch(prop)

 	    {

 	    case E_WIDTH:

 	      changeEdgeWidth(mapname, edge);

 	      break;

 	    case E_COLOR:

 	      changeEdgeColor(mapname, edge);

 	      break;

 	    case E_TEXT:

 	      changeEdgeText(mapname, edge);

 	      break;

 	    default:

 	      std::cerr<<"Error\n";

 	    }

 	}

     }

   else //mapname==""

     {

       switch(prop)

 	{

 	case E_WIDTH:

 	  resetEdgeWidth(edge);

 	  break;

 	case E_COLOR:

 	  resetEdgeColor(edge);

 	  break;

 	case E_TEXT:

 	  resetEdgeText(edge);

 	  break;

 	default:

 	  std::cerr<<"Error\n";

 	}

     }

 }

 void GraphDisplayerCanvas::drawGraph()

 {

   //first edges are drawn, to hide joining with nodes later

   for (EdgeIt i((mytab.mapstorage).graph); i!=INVALID; ++i)

   {

     if (mytab.mapstorage.graph.source(i) == mytab.mapstorage.graph.target(i))

     {

       edgesmap[i]=new LoopEdge(displayed_graph, i, *this);

     }

     else

     {

       edgesmap[i]=new BrokenEdge(displayed_graph, i, *this);

     }

     //initializing edge-text as well, to empty string

     XY text_pos=mytab.mapstorage.arrow_pos[i];

     text_pos+=(XY(10,10));

     edgetextmap[i]=new Gnome::Canvas::Text(displayed_graph, text_pos.x, text_pos.y, "");

     edgetextmap[i]->property_fill_color().set_value("darkgreen");

     edgetextmap[i]->signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::mapEditEventHandler), false);

     edgetextmap[i]->raise_to_top();

   }

   //afterwards nodes come to be drawn

   for (NodeIt i((mytab.mapstorage).graph); i!=INVALID; ++i)

   {

     //drawing bule nodes, with black line around them

     nodesmap[i]=new Gnome::Canvas::Ellipse(

         displayed_graph,

         (mytab.mapstorage).coords[i].x-20,

         (mytab.mapstorage).coords[i].y-20,

         (mytab.mapstorage).coords[i].x+20,

         (mytab.mapstorage).coords[i].y+20);

     *(nodesmap[i]) << Gnome::Canvas::Properties::fill_color("blue");

     *(nodesmap[i]) << Gnome::Canvas::Properties::outline_color("black");

     nodesmap[i]->raise_to_top();

     //initializing edge-text as well, to empty string

     XY text_pos(

         ((mytab.mapstorage).coords[i].x+node_property_defaults[N_RADIUS]+5),

         ((mytab.mapstorage).coords[i].y+node_property_defaults[N_RADIUS]+5));

     nodetextmap[i]=new Gnome::Canvas::Text(displayed_graph,

         text_pos.x, text_pos.y, "");

     nodetextmap[i]->property_fill_color().set_value("darkblue");

     nodetextmap[i]->signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::mapEditEventHandler), false);

     nodetextmap[i]->raise_to_top();

   }

   updateScrollRegion();

 }

 void GraphDisplayerCanvas::clear()

 {

   active_node=INVALID;

   active_edge=INVALID;

   forming_edge=INVALID;

   for (NodeIt n((mytab.mapstorage).graph); n != INVALID; ++n)

   {

     delete nodesmap[n];

     delete nodetextmap[n];

   }

   for (EdgeIt e((mytab.mapstorage).graph); e != INVALID; ++e)

   {

     delete edgesmap[e];

     delete edgetextmap[e];

   }

 }

 void GraphDisplayerCanvas::setView(bool autoscale_p, bool zoomtrack_p, double width_p, double radius_p)

 {

   autoscale=autoscale_p;

   edge_width=width_p;

   radius_size=radius_p;

   if((!zoomtrack) && zoomtrack_p)

     {

       fixed_zoom_factor=get_pixels_per_unit();

     }

   zoomtrack=zoomtrack_p;

   propertyChange(false, N_RADIUS);

   propertyChange(true, E_WIDTH);

 }

 void GraphDisplayerCanvas::getView(bool & autoscale_p, bool & zoomtrack_p, double& width_p, double& radius_p)

 {

   autoscale_p=autoscale;

   zoomtrack_p=zoomtrack;

   width_p=edge_width;

   radius_p=radius_size;

 }