diff -r 164783ceb9be -r a3bd39d50930 graph_displayer_canvas.cc
--- a/graph_displayer_canvas.cc	Thu Jun 16 18:08:04 2005 +0000
+++ b/graph_displayer_canvas.cc	Thu Jun 16 18:58:15 2005 +0000
@@ -2,7 +2,7 @@
 #include <broken_edge.h>
 #include <math.h>
 
-GraphDisplayerCanvas::GraphDisplayerCanvas(Graph & gr, CoordinatesMap & cm, MapStorage & ms):g(gr),nodesmap(g),edgesmap(g),edgetextmap(g),displayed_graph(*(root()), 0, 0),mapstorage(ms),isbutton(false),active_item(NULL),target_item(NULL)
+GraphDisplayerCanvas::GraphDisplayerCanvas(Graph & gr, CoordinatesMap & cm, MapStorage & ms):g(gr),nodesmap(g),edgesmap(g),edgetextmap(g),displayed_graph(*(root()), 0, 0),mapstorage(ms),isbutton(0),active_item(NULL),target_item(NULL)
 {
   
   actual_handler=displayed_graph.signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::create_edge_event_handler), false);
@@ -181,10 +181,10 @@
       clicked_x=e->button.x;
       clicked_y=e->button.y;
       active_item=(get_item_at(e->button.x, e->button.y));
-      isbutton=true;
+      isbutton=1;
       break;
     case GDK_BUTTON_RELEASE:
-      isbutton=false;
+      isbutton=0;
       active_item=NULL;
       updateScrollRegion();
       break;
@@ -350,10 +350,18 @@
 	      active_node=i;
 	    }
 	}
-      isbutton=true;
+      switch(e->button.button)
+	{
+	case 3:      
+	  isbutton=3;
+	  break;
+	default:
+	  isbutton=1;
+	  break;
+	}
       break;
     case GDK_BUTTON_RELEASE:
-      isbutton=false;
+      isbutton=0;
       active_item=NULL;
       active_node=INVALID;
       updateScrollRegion();
@@ -376,47 +384,61 @@
         clicked_y=e->motion.y;
 
 	//all the edges connected to the moved point has to be redrawn
-        EdgeIt e;
+        EdgeIt ei;
 
-        g.firstOut(e,active_node);
+        g.firstOut(ei,active_node);
 
-        for(;e!=INVALID;g.nextOut(e))
+        for(;ei!=INVALID;g.nextOut(ei))
         {
             Gnome::Canvas::Points coos;
             double x1, x2, y1, y2;
 
-            nodesmap[g.source(e)]->get_bounds(x1, y1, x2, y2);
+            nodesmap[g.source(ei)]->get_bounds(x1, y1, x2, y2);
             coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2));
 
-            nodesmap[g.target(e)]->get_bounds(x1, y1, x2, y2);
+            nodesmap[g.target(ei)]->get_bounds(x1, y1, x2, y2);
             coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2));
 
-            edgesmap[e]->set_points(coos);
+	    if(isbutton==3)
+	      {
+		edgesmap[ei]->set_points(coos);
+	      }
+	    else
+	      {
+		edgesmap[ei]->set_points(coos,true);
+	      }
 
-	    edgesmap[e]->get_bounds(x1, y1, x2, y2);
+	    edgesmap[ei]->get_bounds(x1, y1, x2, y2);
 
-	    edgetextmap[e]->property_x().set_value((x1+x2)/2);
-	    edgetextmap[e]->property_y().set_value((y1+y2)/2);
+	    edgetextmap[ei]->property_x().set_value((x1+x2)/2);
+	    edgetextmap[ei]->property_y().set_value((y1+y2)/2);
         }
 
-        g.firstIn(e,active_node);
-        for(;e!=INVALID;g.nextIn(e))
+        g.firstIn(ei,active_node);
+        for(;ei!=INVALID;g.nextIn(ei))
         {
             Gnome::Canvas::Points coos;
             double x1, x2, y1, y2;
 
-            nodesmap[g.source(e)]->get_bounds(x1, y1, x2, y2);
+            nodesmap[g.source(ei)]->get_bounds(x1, y1, x2, y2);
             coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2));
 
-            nodesmap[g.target(e)]->get_bounds(x1, y1, x2, y2);
+            nodesmap[g.target(ei)]->get_bounds(x1, y1, x2, y2);
             coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2));
 
-            edgesmap[e]->set_points(coos);
+	    if(isbutton==3)
+	      {
+		edgesmap[ei]->set_points(coos);
+	      }
+	    else
+	      {
+		edgesmap[ei]->set_points(coos,true);
+	      }
 
-	    edgesmap[e]->get_bounds(x1, y1, x2, y2);
+	    edgesmap[ei]->get_bounds(x1, y1, x2, y2);
 
-	    edgetextmap[e]->property_x().set_value((x1+x2)/2);
-	    edgetextmap[e]->property_y().set_value((y1+y2)/2);
+	    edgetextmap[ei]->property_x().set_value((x1+x2)/2);
+	    edgetextmap[ei]->property_y().set_value((y1+y2)/2);
         }
       }
     default: break;
@@ -432,7 +454,7 @@
 
       //draw the new node in red at the clicked place
     case GDK_BUTTON_PRESS:
-      isbutton=true;
+      isbutton=1;
 
       active_node=NodeIt(g,g.addNode());
 
@@ -460,7 +482,7 @@
 
       //finalize the new node
     case GDK_BUTTON_RELEASE:
-      isbutton=false;
+      isbutton=0;
       *active_item << Gnome::Canvas::Properties::fill_color("blue");
       active_item=NULL;
       active_node=INVALID;
@@ -499,7 +521,7 @@
 	      if(active_node!=INVALID)
 		{
 		  *(nodesmap[active_node]) << Gnome::Canvas::Properties::fill_color("red");
-		  isbutton=true;
+		  isbutton=1;
 		}
 	      //clicked item was not a node. It could be e.g. edge.
 	      else
@@ -564,7 +586,7 @@
 	}
       break;
     case GDK_BUTTON_RELEASE:
-      isbutton=false;
+      isbutton=0;
       //we clear settings in two cases
       //1: the edge is ready (target_item has valid value)
       //2: the edge creation is cancelled with right button