diff -r d8475431bbbb -r 8e85e6bbefdf gui/graph_displayer_canvas.cc
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gui/graph_displayer_canvas.cc	Mon May 23 04:48:14 2005 +0000
@@ -0,0 +1,259 @@
+#include <graph_displayer_canvas.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)
+{
+
+  for (EdgeIt i(g); i!=INVALID; ++i)
+  {
+    Gnome::Canvas::Points coos;
+    coos.push_back(Gnome::Art::Point(cm[g.source(i)].x,cm[g.source(i)].y));
+    coos.push_back(Gnome::Art::Point(cm[g.target(i)].x,cm[g.target(i)].y));
+    
+    edgesmap[i]=new Gnome::Canvas::Line(displayed_graph, coos);
+    *(edgesmap[i]) << Gnome::Canvas::Properties::fill_color("green");
+    edgesmap[i]->property_width_pixels().set_value(10);
+    
+    
+    double x1, x2, y1, y2;
+    edgesmap[i]->get_bounds(x1, y1, x2, y2);
+    
+    edgetextmap[i]=new Gnome::Canvas::Text(displayed_graph,(x1+x2)/2, (y1+y2)/2, "");
+    edgetextmap[i]->property_fill_color().set_value("black");
+  }
+
+  NodeIt i(g);
+  int maxx=0, maxy=0, minx=(int)cm[i].x, miny=(int)cm[i].y;
+
+  for (; i!=INVALID; ++i)
+  {
+    if(cm[i].x>maxx)maxx=(int)cm[i].x;
+    if(cm[i].y>maxy)maxy=(int)cm[i].y;
+    if(cm[i].x<minx)minx=(int)cm[i].x;
+    if(cm[i].y<miny)miny=(int)cm[i].y;
+
+    nodesmap[i]=new Gnome::Canvas::Ellipse(displayed_graph, cm[i].x-20, cm[i].y-20, cm[i].x+20, cm[i].y+20);
+    *(nodesmap[i]) << Gnome::Canvas::Properties::fill_color("blue");
+    *(nodesmap[i]) << Gnome::Canvas::Properties::outline_color("black");
+    (nodesmap[i])->signal_event().connect(sigc::bind(sigc::mem_fun(*this, &GraphDisplayerCanvas::event_handler),i));
+  }
+
+  double biggest_x=(abs(maxx)>abs(minx))?(abs(maxx)+80):(abs(minx)+80);
+  double biggest_y=(abs(maxy)>abs(miny))?(abs(maxy)+80):(abs(miny)+80);
+
+  set_pixels_per_unit((biggest_x>biggest_y)?(WIN_WIDTH/biggest_x/2):(WIN_HEIGHT/biggest_y/2));
+  std::cout<<abs(maxx)<<" "<<abs(minx)<<" big x "<<biggest_x<<" "<<abs(maxy)<<" "<<abs(miny)<<" big y "<<biggest_y<<std::endl;
+  std::cout<<maxx<<" "<<minx<<" big x "<<biggest_x<<" "<<maxy<<" "<<miny<<" big y "<<biggest_y<<std::endl;
+  std::cout<<"dx "<<(maxx-minx)<<" dy "<<(maxy-miny)<<" xrate "<<((maxx-minx)/WIN_WIDTH)<<" yrate "<<((maxy-miny)/WIN_HEIGHT)<<std::endl;
+
+}
+
+GraphDisplayerCanvas::~GraphDisplayerCanvas()
+{
+    Graph::NodeMap <int> id(g);
+    Graph::NodeMap <double> xc(g);
+    Graph::NodeMap <double> yc(g);
+
+    int j=1;
+
+    for (NodeIt i(g); i!=INVALID; ++i)
+    {
+        double x1,y1,x2,y2;
+        nodesmap[i]->get_bounds(x1, y1, x2, y2);
+
+        id[i]=j++;
+        xc[i]=(x1+x2)/2;
+        yc[i]=(y1+y2)/2;
+    }
+
+    GraphWriter<Graph> writer(std::cout,g);
+
+    writer.writeNodeMap("id", id);
+    writer.writeNodeMap("coordinates_x", xc);
+    writer.writeNodeMap("coordinates_y", yc);
+    writer.run();
+}
+
+int GraphDisplayerCanvas::changeLineWidth (std::string mapname)
+{
+  for (EdgeIt i(g); i!=INVALID; ++i)
+  {
+    int w=(int)(*(mapstorage.edgemap_storage)[mapname])[i];
+    edgesmap[i]->property_width_pixels().set_value(w);
+  }
+  return 0;
+};
+
+int GraphDisplayerCanvas::changeColor (std::string 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)
+    {
+      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);
+  }
+  return 0;
+};
+
+int GraphDisplayerCanvas::changeText (std::string mapname)
+{
+  for (EdgeIt i(g); i!=INVALID; ++i)
+  {
+    if(mapname!="Text")
+    {
+      double number=(*(mapstorage.edgemap_storage)[mapname])[i];
+      int 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("");
+    }
+  }
+  return 0;
+};
+
+
+int GraphDisplayerCanvas::rezoom ()
+{
+  double x1, x2, y1, y2;
+  int x,y;
+
+  NodeIt i(g);
+  nodesmap[i]->get_bounds(x1, y1, x2, y2);
+
+  x=(int)((x1+x2)/2);
+  y=(int)((y1+y2)/2);
+  
+  int maxx=0, maxy=0, minx=(int)x, miny=(int)y;
+
+  for (; i!=INVALID; ++i)
+  {
+    nodesmap[i]->get_bounds(x1, y1, x2, y2);
+
+    x=(int)((x1+x2)/2);
+    y=(int)((y1+y2)/2);
+
+    if(x>maxx)maxx=x;
+    if(y>maxy)maxy=y;
+    if(x<minx)minx=x;
+    if(y<miny)miny=y;
+  }
+
+  double biggest_x=(abs(maxx)>abs(minx))?(abs(maxx)+80):(abs(minx)+80);
+  double biggest_y=(abs(maxy)>abs(miny))?(abs(maxy)+80):(abs(miny)+80);
+
+  set_pixels_per_unit((biggest_x-WIN_WIDTH>biggest_y-WIN_HEIGHT)?(WIN_WIDTH/biggest_x/2):(WIN_HEIGHT/biggest_y/2));
+  return 0;
+};
+
+
+///This function moves only one node of displayed_graph,
+///but recalculate the location of weight point,
+///and also redraw the sides of the planefigure.
+bool GraphDisplayerCanvas::event_handler(GdkEvent* e, Node n)
+{
+  switch(e->type)
+  {
+    case GDK_BUTTON_PRESS:
+      clicked_x=e->button.x;
+      clicked_y=e->button.y;
+      active_item=(get_item_at(e->button.x, e->button.y));
+      isbutton=true;
+      break;
+    case GDK_BUTTON_RELEASE:
+      isbutton=false;
+      active_item=NULL;
+      break;
+    case GDK_MOTION_NOTIFY:
+      if(isbutton)
+      {
+        double dx=e->motion.x-clicked_x;
+        double dy=e->motion.y-clicked_y;
+        active_item->move(dx, dy);
+        clicked_x=e->motion.x;
+        clicked_y=e->motion.y;
+
+        EdgeIt e;
+
+        g.firstOut(e,n);
+        for(;e!=INVALID;g.nextOut(e))
+        {
+            Gnome::Canvas::Points coos;
+            double x1, x2, y1, y2;
+
+            nodesmap[g.source(e)]->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);
+            coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2));
+
+            edgesmap[e]->property_points().set_value(coos);
+
+	    edgesmap[e]->get_bounds(x1, y1, x2, y2);
+
+	    edgetextmap[e]->property_x().set_value((x1+x2)/2);
+	    edgetextmap[e]->property_y().set_value((y1+y2)/2);
+        }
+
+        g.firstIn(e,n);
+        for(;e!=INVALID;g.nextIn(e))
+        {
+            Gnome::Canvas::Points coos;
+            double x1, x2, y1, y2;
+
+            nodesmap[g.source(e)]->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);
+            coos.push_back(Gnome::Art::Point((x1+x2)/2,(y1+y2)/2));
+
+            edgesmap[e]->property_points().set_value(coos);
+
+	    edgesmap[e]->get_bounds(x1, y1, x2, y2);
+
+	    edgetextmap[e]->property_x().set_value((x1+x2)/2);
+	    edgetextmap[e]->property_y().set_value((y1+y2)/2);
+        }
+      }
+    default: break;
+  }
+  return true;
+}
+
+bool GraphDisplayerCanvas::on_expose_event(GdkEventExpose *event)
+{
+  Gnome::Canvas::CanvasAA::on_expose_event(event);
+  //usleep(10000);
+  //rezoom();
+  return true;
+}