Changeset 179:1f436ea3ef4f in glemon-0.x for graph_displayer_canvas-event.cc

Timestamp:

11/06/06 16:40:44 (17 years ago)

Author:

Hegyi Péter

Branch:

default

Phase:

public

Convert:

svn:c9d7d8f5-90d6-0310-b91f-818b3a526b0e/glemon/trunk@3065

Message:

Color handling of maps is a bit better now.

File:

• graph_displayer_canvas-event.cc (modified) (2 diffs)

graph_displayer_canvas-event.cc

@@ -454 +454 @@
         if(active_item)
         {
-          *active_item << Gnome::Canvas::Properties::fill_color("blue");
+          propertyUpdate(active_node,N_COLOR);
           active_item=NULL;
         }
         if(target_item)
         {
-          *target_item << Gnome::Canvas::Properties::fill_color("blue");
+          propertyUpdate((mytab.mapstorage).graph.target(active_edge),N_COLOR);
           target_item=NULL;
         }
@@ -875 +875 @@
     }
 }
+
+Gdk::Color GraphDisplayerCanvas::rainbowColorCounter(double min, double max, double w)
+{
+  Gdk::Color color;
+
+  double pos=(w-min)/(max-min);
+  int phase=0;
+
+  //rainbow transitions contain 6 phase
+  //in each phase only one color is changed
+  //first we determine the phase, in which
+  //the actual value belongs to
+  for (int i=0;i<=5;i++)
+    {
+      if(((double)i/6<pos)&&(pos<=(double(i+1)/6)))
+        {
+          phase=i;
+        }
+    }
+  if(phase<6)
+    {
+      //within its 1/6 long phase the relativ position
+      //determines the power of the color changed in
+      //that phase
+      //we normalize that to one, to be able to give percentage
+      //value for the function
+      double rel_pos=(pos-(phase/6))*6;
+
+      switch(phase)
+        {
+        case 0:
+          color.set_rgb_p (1, 0, 1-rel_pos);
+          break;
+        case 1:
+          color.set_rgb_p (1, rel_pos, 0);
+          break;
+        case 2:
+          color.set_rgb_p (1-rel_pos, 1, 0);
+          break;
+        case 3:
+          color.set_rgb_p (0, 1, rel_pos);
+          break;
+        case 4:
+          color.set_rgb_p (0, 1-rel_pos, 1);
+          break;
+        case 5:
+          color.set_rgb_p ((rel_pos/3), 0, 1);
+          break;
+        default:
+          std::cout << "Wrong phase: " << phase << " " << pos << std::endl;
+        }
+    }
+  else
+    {
+      std::cout << "Wrong phase: " << phase << " " << pos << std::endl;
+    }
+  return color;
+}