ladanyi@1412
|
1 |
// -*- C++ -*- //
|
ladanyi@1412
|
2 |
|
ladanyi@1412
|
3 |
#ifndef GRAPH_DISPLAYER_CANVAS_H
|
ladanyi@1412
|
4 |
#define GRAPH_DISPLAYER_CANVAS_H
|
ladanyi@1412
|
5 |
|
ladanyi@1412
|
6 |
#include <all_include.h>
|
ladanyi@1412
|
7 |
#include <mapstorage.h>
|
ladanyi@1412
|
8 |
#include <libgnomecanvasmm.h>
|
ladanyi@1412
|
9 |
#include <libgnomecanvasmm/polygon.h>
|
ladanyi@1412
|
10 |
|
hegyi@1440
|
11 |
///This class is the canvas, on which the graph can be drawn.
|
ladanyi@1412
|
12 |
class GraphDisplayerCanvas : public Gnome::Canvas::CanvasAA
|
ladanyi@1412
|
13 |
{
|
ladanyi@1412
|
14 |
typedef Gnome::Canvas::CanvasAA Parent;
|
ladanyi@1412
|
15 |
|
ladanyi@1412
|
16 |
public:
|
ladanyi@1412
|
17 |
GraphDisplayerCanvas(Graph &, CoordinatesMap &, MapStorage &);
|
ladanyi@1412
|
18 |
virtual ~GraphDisplayerCanvas();
|
ladanyi@1412
|
19 |
|
hegyi@1440
|
20 |
///Changes the linewidth attribute according to the given map.
|
hegyi@1440
|
21 |
///\param mapname is the name of the map which contains the new values
|
ladanyi@1412
|
22 |
int changeLineWidth (std::string mapname);
|
hegyi@1440
|
23 |
|
hegyi@1440
|
24 |
///Changes the linecolor attribute according to the given map.
|
hegyi@1440
|
25 |
///\param mapname is the name of the map which contains the new values
|
ladanyi@1412
|
26 |
int changeColor (std::string mapname);
|
hegyi@1440
|
27 |
|
hegyi@1440
|
28 |
///Changes the text of line attribute according to the given map.
|
hegyi@1440
|
29 |
///\param mapname is the name of the map which contains the new values
|
ladanyi@1412
|
30 |
int changeText (std::string mapname);
|
hegyi@1440
|
31 |
|
ladanyi@1441
|
32 |
///Callback for 'ViewZoomIn' action.
|
ladanyi@1441
|
33 |
virtual void zoomIn();
|
ladanyi@1441
|
34 |
///Callback for 'ViewZoomOut' action.
|
ladanyi@1441
|
35 |
virtual void zoomOut();
|
ladanyi@1441
|
36 |
///Callback for 'ViewZoomFit' action.
|
ladanyi@1441
|
37 |
virtual void zoomFit();
|
ladanyi@1441
|
38 |
///Callback for 'ViewZoom100' action.
|
ladanyi@1441
|
39 |
virtual void zoom100();
|
ladanyi@1441
|
40 |
///Sets the scroll region of the convas to the bounding box of the graph.
|
ladanyi@1441
|
41 |
void updateScrollRegion();
|
ladanyi@1412
|
42 |
|
ladanyi@1412
|
43 |
protected:
|
ladanyi@1412
|
44 |
|
hegyi@1440
|
45 |
//maximizing, minimizing, restoring window, etc.
|
ladanyi@1412
|
46 |
virtual bool on_expose_event(GdkEventExpose *);
|
ladanyi@1412
|
47 |
|
ladanyi@1412
|
48 |
private:
|
ladanyi@1412
|
49 |
|
hegyi@1440
|
50 |
///This function is responsible for the correct
|
hegyi@1440
|
51 |
///reaction of any action happened in the territory
|
hegyi@1440
|
52 |
///of the canvas
|
ladanyi@1412
|
53 |
bool event_handler(GdkEvent* e, Node n);
|
ladanyi@1412
|
54 |
|
ladanyi@1412
|
55 |
///The graph, on which we work
|
ladanyi@1412
|
56 |
Graph g;
|
hegyi@1440
|
57 |
|
hegyi@1440
|
58 |
///Map of nodes of graph
|
ladanyi@1412
|
59 |
Graph::NodeMap<Gnome::Canvas::Ellipse *> nodesmap;
|
hegyi@1440
|
60 |
|
hegyi@1440
|
61 |
///Map of edges of graph
|
ladanyi@1412
|
62 |
Graph::EdgeMap<Gnome::Canvas::Line *> edgesmap;
|
ladanyi@1412
|
63 |
|
ladanyi@1412
|
64 |
///Map of texts to write on edges
|
ladanyi@1412
|
65 |
Graph::EdgeMap<Gnome::Canvas::Text *> edgetextmap;
|
ladanyi@1412
|
66 |
|
ladanyi@1412
|
67 |
///Group of graphical elements of displayed_graph
|
ladanyi@1412
|
68 |
Gnome::Canvas::Group displayed_graph;
|
ladanyi@1412
|
69 |
|
ladanyi@1412
|
70 |
///Here we store the maps that can be displayed through properties.
|
ladanyi@1412
|
71 |
MapStorage mapstorage;
|
ladanyi@1412
|
72 |
|
ladanyi@1412
|
73 |
///Indicates whether the button of mouse is pressed or not
|
ladanyi@1412
|
74 |
bool isbutton;
|
ladanyi@1412
|
75 |
|
ladanyi@1412
|
76 |
///At this location was the mousebutton pressed.
|
ladanyi@1412
|
77 |
///It helps to calculate the distance of dragging.
|
ladanyi@1412
|
78 |
double clicked_x, clicked_y;
|
ladanyi@1412
|
79 |
|
ladanyi@1412
|
80 |
///Remembers which Gnome::Canvas::Item was pressed.
|
ladanyi@1412
|
81 |
///this variable is needed, because
|
ladanyi@1412
|
82 |
///1. we cannot query the item at he cursor as fast as it could not cause a Segmentation Fault
|
ladanyi@1412
|
83 |
///2. we would like to handle only ony item per movement, therefore quering it is not a working solution
|
ladanyi@1412
|
84 |
Gnome::Canvas::Item * active_item;
|
ladanyi@1412
|
85 |
|
ladanyi@1441
|
86 |
static const int zoom_step = 5;
|
ladanyi@1412
|
87 |
};
|
ladanyi@1412
|
88 |
|
ladanyi@1412
|
89 |
#endif //GRAPH_DISPLAYER_CANVAS_H
|