1 | // -*- C++ -*- //
|
---|
2 |
|
---|
3 | #ifndef GRAPH_DISPLAYER_CANVAS_H
|
---|
4 | #define GRAPH_DISPLAYER_CANVAS_H
|
---|
5 |
|
---|
6 | #include <all_include.h>
|
---|
7 | #include <mapstorage.h>
|
---|
8 | #include <libgnomecanvasmm.h>
|
---|
9 | #include <libgnomecanvasmm/polygon.h>
|
---|
10 |
|
---|
11 | ///This class is the canvas, on which the graph can be drawn.
|
---|
12 | class GraphDisplayerCanvas : public Gnome::Canvas::CanvasAA
|
---|
13 | {
|
---|
14 | typedef Gnome::Canvas::CanvasAA Parent;
|
---|
15 |
|
---|
16 | public:
|
---|
17 | GraphDisplayerCanvas(Graph &, CoordinatesMap &, MapStorage &);
|
---|
18 | virtual ~GraphDisplayerCanvas();
|
---|
19 |
|
---|
20 | ///Changes the linewidth attribute according to the given map.
|
---|
21 | ///\param mapname is the name of the map which contains the new values
|
---|
22 | int changeLineWidth (std::string mapname);
|
---|
23 |
|
---|
24 | ///Changes the linecolor attribute according to the given map.
|
---|
25 | ///\param mapname is the name of the map which contains the new values
|
---|
26 | int changeColor (std::string mapname);
|
---|
27 |
|
---|
28 | ///Changes the text of line attribute according to the given map.
|
---|
29 | ///\param mapname is the name of the map which contains the new values
|
---|
30 | int changeText (std::string mapname);
|
---|
31 |
|
---|
32 | ///Changes the dot-pro-pixel to be able to show the whole graph.
|
---|
33 | int rezoom();
|
---|
34 |
|
---|
35 | protected:
|
---|
36 |
|
---|
37 | //maximizing, minimizing, restoring window, etc.
|
---|
38 | virtual bool on_expose_event(GdkEventExpose *);
|
---|
39 |
|
---|
40 | private:
|
---|
41 |
|
---|
42 | ///This function is responsible for the correct
|
---|
43 | ///reaction of any action happened in the territory
|
---|
44 | ///of the canvas
|
---|
45 | bool event_handler(GdkEvent* e, Node n);
|
---|
46 |
|
---|
47 | ///The graph, on which we work
|
---|
48 | Graph g;
|
---|
49 |
|
---|
50 | ///Map of nodes of graph
|
---|
51 | Graph::NodeMap<Gnome::Canvas::Ellipse *> nodesmap;
|
---|
52 |
|
---|
53 | ///Map of edges of graph
|
---|
54 | Graph::EdgeMap<Gnome::Canvas::Line *> edgesmap;
|
---|
55 |
|
---|
56 | ///Map of texts to write on edges
|
---|
57 | Graph::EdgeMap<Gnome::Canvas::Text *> edgetextmap;
|
---|
58 |
|
---|
59 | ///Group of graphical elements of displayed_graph
|
---|
60 | Gnome::Canvas::Group displayed_graph;
|
---|
61 |
|
---|
62 | ///Here we store the maps that can be displayed through properties.
|
---|
63 | MapStorage mapstorage;
|
---|
64 |
|
---|
65 | ///Indicates whether the button of mouse is pressed or not
|
---|
66 | bool isbutton;
|
---|
67 |
|
---|
68 | ///At this location was the mousebutton pressed.
|
---|
69 | ///It helps to calculate the distance of dragging.
|
---|
70 | double clicked_x, clicked_y;
|
---|
71 |
|
---|
72 | ///Remembers which Gnome::Canvas::Item was pressed.
|
---|
73 | ///this variable is needed, because
|
---|
74 | ///1. we cannot query the item at he cursor as fast as it could not cause a Segmentation Fault
|
---|
75 | ///2. we would like to handle only ony item per movement, therefore quering it is not a working solution
|
---|
76 | Gnome::Canvas::Item * active_item;
|
---|
77 |
|
---|
78 |
|
---|
79 | };
|
---|
80 |
|
---|
81 | #endif //GRAPH_DISPLAYER_CANVAS_H
|
---|