diff -r e2c86ae158cf -r fa28f1071bd6 graph_displayer_canvas-edge.cc
--- a/graph_displayer_canvas-edge.cc	Fri Jun 24 07:58:18 2005 +0000
+++ b/graph_displayer_canvas-edge.cc	Fri Jun 24 18:16:12 2005 +0000
@@ -3,49 +3,82 @@
 #include <math.h>
 
 
-int GraphDisplayerCanvas::changeLineWidth (std::string mapname)
+int GraphDisplayerCanvas::changeEdgeWidth (std::string mapname, Graph::Edge edge)
 {
-  for (EdgeIt i(g); i!=INVALID; ++i)
+  if(edge==INVALID)
     {
-      int w=(int)(*(mapstorage.edgemap_storage)[mapname])[i];
+      for (EdgeIt i(g); i!=INVALID; ++i)
+	{
+	  int w=(int)(*(mapstorage.edgemap_storage)[mapname])[i];
+	  if(w>=0)
+	    {
+	      edgesmap[i]->property_width_pixels().set_value(w);
+	    }
+	}
+    }
+  else
+    {
+      int w=(int)(*(mapstorage.edgemap_storage)[mapname])[edge];
       if(w>=0)
 	{
-	  edgesmap[i]->property_width_pixels().set_value(w);
+	  edgesmap[edge]->property_width_pixels().set_value(w);
 	}
     }
   return 0;
 };
 
-int GraphDisplayerCanvas::changeColor (std::string mapname)
+int GraphDisplayerCanvas::changeEdgeColor (std::string mapname, Graph::Edge edge)
 {  
 
   //function maps the range of the maximum and
   //the minimum of the nodemap to the range of
   //green in RGB
+  if(edge==INVALID)
+    {
 
-  for (EdgeIt i(g); i!=INVALID; ++i)
-  {
-    double w=(*(mapstorage.edgemap_storage)[mapname])[i];
-    double max=mapstorage.maxOfEdgeMap(mapname);
-    double min=mapstorage.minOfEdgeMap(mapname);
+      for (EdgeIt i(g); i!=INVALID; ++i)
+	{
+	  double w=(*(mapstorage.edgemap_storage)[mapname])[i];
+	  double max=mapstorage.maxOfEdgeMap(mapname);
+	  double min=mapstorage.minOfEdgeMap(mapname);
       
-    //std::cout<<w<<" "<<max<<" "<<min<<" "<<100*(w-min)/(max-min)<<std::endl;
-    Gdk::Color color;
-    if(max!=min)
+	  //std::cout<<w<<" "<<max<<" "<<min<<" "<<100*(w-min)/(max-min)<<std::endl;
+	  Gdk::Color color;
+	  if(max!=min)
+	    {
+	      color.set_rgb_p (0, 100*(w-min)/(max-min), 0);
+	    }
+	  else
+	    {
+	      color.set_rgb_p (0, 100, 0);
+	    }
+
+	  edgesmap[i]->property_fill_color_gdk().set_value(color);
+	}
+    }
+  else
     {
-      color.set_rgb_p (0, 100*(w-min)/(max-min), 0);
+      double w=(*(mapstorage.edgemap_storage)[mapname])[edge];
+      double max=mapstorage.maxOfEdgeMap(mapname);
+      double min=mapstorage.minOfEdgeMap(mapname);
+      
+      //std::cout<<w<<" "<<max<<" "<<min<<" "<<100*(w-min)/(max-min)<<std::endl;
+      Gdk::Color color;
+      if(max!=min)
+	{
+	  color.set_rgb_p (0, 100*(w-min)/(max-min), 0);
+	}
+      else
+	{
+	  color.set_rgb_p (0, 100, 0);
+	}
+
+      edgesmap[edge]->property_fill_color_gdk().set_value(color);
     }
-    else
-    {
-      color.set_rgb_p (0, 100, 0);
-    }
-
-    edgesmap[i]->property_fill_color_gdk().set_value(color);
-  }
   return 0;
 };
 
-int GraphDisplayerCanvas::changeText (std::string mapname)
+int GraphDisplayerCanvas::changeEdgeText (std::string mapname, Graph::Edge edge)
 {
 
   //the number in the map will be written on the edge
@@ -54,11 +87,50 @@
   //that is the deleter map
   //\todo isn't it a bit woodcutter?
 
-  for (EdgeIt i(g); i!=INVALID; ++i)
+  if(edge==INVALID)
     {
-      if(mapname!="Text")
+      for (EdgeIt i(g); i!=INVALID; ++i)
 	{
-	  double number=(*(mapstorage.edgemap_storage)[mapname])[i];
+	  if(mapname!=edge_property_strings[E_TEXT])
+	    {
+	      double number=(*(mapstorage.edgemap_storage)[mapname])[i];
+	      int length=1;
+	      //if number is smaller than one, length would be negative, or invalid
+	      if(number>=1)
+		{
+		  length=(int)(floor(log(number)/log(10)))+1;
+		}
+	      int maxpos=(int)(pow(10,length-1));
+	      int strl=length+1+RANGE;
+	      char * str=new char[strl];
+	      str[length]='.';
+	      str[strl]='\0';
+      
+	      for(int j=0;j<strl;j++)
+		{
+		  if(j!=length)
+		    {
+		      int digit=(int)(number/maxpos);
+		      str[j]=(digit+'0');
+		      number-=digit*maxpos;
+		      number*=10;
+		    }
+		}
+      
+	      edgetextmap[i]->property_text().set_value(str);
+	    }
+	  else
+	    {
+	      edgetextmap[i]->property_text().set_value("");
+	    }
+	}
+
+    }
+  else
+    {
+      if(mapname!=edge_property_strings[E_TEXT])
+	{
+	  double number=(*(mapstorage.edgemap_storage)[mapname])[edge];
 	  int length=1;
 	  //if number is smaller than one, length would be negative, or invalid
 	  if(number>=1)
@@ -82,12 +154,15 @@
 		}
 	    }
       
-	  edgetextmap[i]->property_text().set_value(str);
+	  edgetextmap[edge]->property_text().set_value(str);
 	}
       else
 	{
-	  edgetextmap[i]->property_text().set_value("");
+	  edgetextmap[edge]->property_text().set_value("");
 	}
+	  
     }
+
   return 0;
+
 };