1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/graph_displayer_canvas.h	Wed May 11 16:55:18 2005 +0000
     1.3 @@ -0,0 +1,65 @@
     1.4 +// -*- C++ -*- //
     1.5 +
     1.6 +#ifndef GRAPH_DISPLAYER_CANVAS_H
     1.7 +#define GRAPH_DISPLAYER_CANVAS_H
     1.8 +
     1.9 +#include <all_include.h>
    1.10 +#include <mapstorage.h>
    1.11 +#include <libgnomecanvasmm.h>
    1.12 +#include <libgnomecanvasmm/polygon.h>
    1.13 +
    1.14 +class GraphDisplayerCanvas : public Gnome::Canvas::CanvasAA
    1.15 +{
    1.16 +  typedef Gnome::Canvas::CanvasAA Parent;
    1.17 +
    1.18 +public:
    1.19 +  GraphDisplayerCanvas(Graph &, CoordinatesMap &, MapStorage &);
    1.20 +  virtual ~GraphDisplayerCanvas();
    1.21 +
    1.22 +  int changeLineWidth (std::string mapname);
    1.23 +  int changeColor (std::string mapname);
    1.24 +  int changeText (std::string mapname);
    1.25 +  int rezoom();
    1.26 +
    1.27 +protected:
    1.28 +
    1.29 +  virtual bool on_expose_event(GdkEventExpose *);
    1.30 +
    1.31 +private:
    1.32 +
    1.33 +  ///Event handler function that handles dragging nodes of displayed_graph
    1.34 +  bool event_handler(GdkEvent* e, Node n);
    1.35 +
    1.36 +  ///The graph, on which we work
    1.37 +  Graph g;
    1.38 +  ///Map of nodes of planefigure
    1.39 +  Graph::NodeMap<Gnome::Canvas::Ellipse *> nodesmap;
    1.40 +  ///Map of edges of planefigure
    1.41 +  Graph::EdgeMap<Gnome::Canvas::Line *> edgesmap;
    1.42 +
    1.43 +  ///Map of texts to write on edges
    1.44 +  Graph::EdgeMap<Gnome::Canvas::Text *> edgetextmap;
    1.45 +
    1.46 +  ///Group of graphical elements of displayed_graph
    1.47 +  Gnome::Canvas::Group displayed_graph;
    1.48 +
    1.49 +  ///Here we store the maps that can be displayed through properties.
    1.50 +  MapStorage mapstorage;
    1.51 +
    1.52 +  ///Indicates whether the button of mouse is pressed or not
    1.53 +  bool isbutton;
    1.54 +
    1.55 +  ///At this location was the mousebutton pressed.
    1.56 +  ///It helps to calculate the distance of dragging.
    1.57 +  double clicked_x, clicked_y;
    1.58 +
    1.59 +  ///Remembers which Gnome::Canvas::Item was pressed.
    1.60 +  ///this variable is needed, because
    1.61 +  ///1. we cannot query the item at he cursor as fast as it could not cause a Segmentation Fault
    1.62 +  ///2. we would like to handle only ony item per movement, therefore quering it is not a working solution
    1.63 +  Gnome::Canvas::Item * active_item;
    1.64 +
    1.65 +
    1.66 +};
    1.67 +
    1.68 +#endif //GRAPH_DISPLAYER_CANVAS_H