Changeset 147:10ef59f6633c in glemon-0.x for graph_displayer_canvas.h

Timestamp:

09/13/06 11:16:29 (18 years ago)

Author:

Akos Ladanyi

Branch:

default

Phase:

public

Convert:

svn:c9d7d8f5-90d6-0310-b91f-818b3a526b0e/glemon/trunk@2943

Message:

Loop edges.

File:

• graph_displayer_canvas.h (modified) (4 diffs)

graph_displayer_canvas.h

@@ -16 +16 @@
 {
   friend class BrokenEdge;
+  friend class LoopEdge;
+
+  class EdgeBase : public Gnome::Canvas::Group
+  {
+    protected:
+      ///Reference to the canvas, on which the graph is drawn.
+
+      ///It is needed, because some datas needed from
+      ///graph can be accessed by this or should be sent
+      ///as parameter, but it would be complicated
+      GraphDisplayerCanvas& canvas;
+
+      ///The edge that the class displays.
+
+      ///It is needed, because some datas needed from
+      ///graph can be accessed by this or should be sent
+      ///as parameter, but it would be complicated
+      Edge edge;
+
+      Gnome::Canvas::Polygon arrow;
+
+      void drawArrow(XY);
+    public:
+      EdgeBase(Gnome::Canvas::Group&, Edge, GraphDisplayerCanvas&);
+      virtual ~EdgeBase();
+      virtual void draw() = 0;
+      virtual void setLineWidth(int) = 0;
+      virtual void setFillColor(Gdk::Color) = 0;
+  };
 
   ///Edge displayer class
@@ -24 +53 @@
   ///and to be able to display more then one edges between the
   ///same source and target
-  class BrokenEdge : public Gnome::Canvas::Line
+  class BrokenEdge : public EdgeBase
   {
-    ///The edge that the class displays.
-
-    ///It is needed, because some datas needed from
-    ///graph can be accessed by this or should be sent
-    ///as parameter, but it would be complicated
-    Edge edge;
-
-    ///Reference to the canvas, on which the graph is drawn.
-
-    ///It is needed, because some datas needed from
-    ///graph can be accessed by this or should be sent
-    ///as parameter, but it would be complicated
-    GraphDisplayerCanvas & gdc;
-
-    ///An arrow that indicates the direction of the edges
-
-    ///in case of directional graph direction can be indicated
-    ///by this polygon. The polygon formulates a red arrow.
-    Gnome::Canvas::Polygon * arrow;
-
-    ///Indicates whether the button of mouse is pressed or not at the moment.
-    bool isbutton;
-
-    ///At this location was the mousebutton pressed. Horizontal component.
-
-    ///It helps to calculate the
-    ///distance of dragging.
-    double clicked_x;
-
-    ///At this location was the mousebutton pressed. Vertical component.
-
-    ///It helps to calculate the
-    ///distance of dragging.
-    double clicked_y;
-
-    ///event handler for forming broken edges
-
-    ///\param event the
-    ///event to handle
-    bool edgeFormerEventHandler(GdkEvent* event);
-  public:
-
-    ///Constructor of broken edge class.
-
-    ///\param g the group to which the edge belongs
-    ///\param _edge the represented edge
-    ///\param gc the canvas
-    BrokenEdge(Gnome::Canvas::Group & g, Edge _edge, GraphDisplayerCanvas & gc);
-
-    ///Destructor of broken edge class
-
-    ///Frees up
-    ///reserved memory
-    ~BrokenEdge();
-
-    ///The function that draws the edge based on collected data
-    void draw();
+    private:
+      Gnome::Canvas::Line line;
+
+      ///Indicates whether the button of mouse is pressed or not at the moment.
+      bool isbutton;
+
+      ///At this location was the mousebutton pressed. Horizontal component.
+
+      ///It helps to calculate the
+      ///distance of dragging.
+      double clicked_x;
+
+      ///At this location was the mousebutton pressed. Vertical component.
+
+      ///It helps to calculate the
+      ///distance of dragging.
+      double clicked_y;
+
+      ///event handler for forming broken edges
+
+      ///\param event the
+      ///event to handle
+      bool edgeFormerEventHandler(GdkEvent* event);
+
+    public:
+      ///Constructor of broken edge class.
+
+      ///\param g the group to which the edge belongs
+      ///\param _edge the represented edge
+      ///\param gc the canvas
+      BrokenEdge(Gnome::Canvas::Group&, Edge, GraphDisplayerCanvas&);
+
+      ///Destructor of broken edge class
+
+      ///Frees up
+      ///reserved memory
+      ~BrokenEdge();
+
+      ///The function that draws the edge based on collected data
+      void draw();
+
+      void setLineWidth(int);
+      void setFillColor(Gdk::Color);
+  };
+
+  class LoopEdge : public EdgeBase
+  {
+    private:
+      Gnome::Canvas::Ellipse line;
+    public:
+      LoopEdge(Gnome::Canvas::Group&, Edge, GraphDisplayerCanvas&);
+      ~LoopEdge();
+      void draw();
+      void setLineWidth(int);
+      void setFillColor(Gdk::Color);
   };
 
@@ -242 +269 @@
   void textReposition(xy<double>);
 
-  ///Activates an edge belonging to a BrokenEdge
+  ///Activates an edge belonging to an EdgeBase
 
   ///After we have activated an edge this way,
   ///the GDC object will know, which edge is under forming
   ///therefore it can redraw the necessary elements on the canvas,
-  ///for example the text belonging to the \ref BrokenEdge can be
+  ///for example the text belonging to the \ref EdgeBase can be
   ///redrawn (\ref textReposition).
-  void toggleEdgeActivity(BrokenEdge*, bool);
+  void toggleEdgeActivity(EdgeBase*, bool);
 
 public:
@@ -290 +317 @@
 
   ///Map of edges of graph
-  Graph::EdgeMap<BrokenEdge *> edgesmap;
+  Graph::EdgeMap<EdgeBase*> edgesmap;
 
   ///Map of texts to write on edges