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38 ///Callback for 'ViewZoom100' action. |
38 ///Callback for 'ViewZoom100' action. |
39 virtual void zoom100(); |
39 virtual void zoom100(); |
40 ///Sets the scroll region of the convas to the bounding box of the graph. |
40 ///Sets the scroll region of the convas to the bounding box of the graph. |
41 void updateScrollRegion(); |
41 void updateScrollRegion(); |
42 |
42 |
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43 ///This function changes the tool in the graph-editor's hand |
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44 void changeEditorialTool(int); |
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45 |
43 protected: |
46 protected: |
44 |
47 |
45 //maximizing, minimizing, restoring window, etc. |
48 //maximizing, minimizing, restoring window, etc. |
46 virtual bool on_expose_event(GdkEventExpose *); |
49 virtual bool on_expose_event(GdkEventExpose *); |
47 |
50 |
49 |
52 |
50 ///This function is responsible for the correct |
53 ///This function is responsible for the correct |
51 ///reaction of any action happened in the territory |
54 ///reaction of any action happened in the territory |
52 ///of the canvas |
55 ///of the canvas |
53 bool event_handler(GdkEvent* e, Node n); |
56 bool event_handler(GdkEvent* e, Node n); |
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57 |
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58 ///actual event handler |
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59 /// |
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60 ///Actual event handler should be stored, to be able to disconnect it and later reconnect it. |
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61 sigc::connection actual_handler; |
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62 |
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63 ///event handler for the case when move-tool is active |
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64 bool move_event_handler(GdkEvent*); |
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65 ///event handler for the case when create_node-tool is active |
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66 bool create_node_event_handler(GdkEvent*); |
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67 ///event handler for the case when create_edge-tool is active |
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68 bool create_edge_event_handler(GdkEvent*); |
54 |
69 |
55 ///The graph, on which we work |
70 ///The graph, on which we work |
56 Graph g; |
71 Graph g; |
57 |
72 |
58 ///Map of nodes of graph |
73 ///Map of nodes of graph |
80 ///Remembers which Gnome::Canvas::Item was pressed. |
95 ///Remembers which Gnome::Canvas::Item was pressed. |
81 ///this variable is needed, because |
96 ///this variable is needed, because |
82 ///1. we cannot query the item at he cursor as fast as it could not cause a Segmentation Fault |
97 ///1. we cannot query the item at he cursor as fast as it could not cause a Segmentation Fault |
83 ///2. we would like to handle only ony item per movement, therefore quering it is not a working solution |
98 ///2. we would like to handle only ony item per movement, therefore quering it is not a working solution |
84 Gnome::Canvas::Item * active_item; |
99 Gnome::Canvas::Item * active_item; |
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100 Graph::NodeIt active_node; |
85 |
101 |
86 static const int zoom_step = 5; |
102 static const int zoom_step = 5; |
87 }; |
103 }; |
88 |
104 |
89 #endif //GRAPH_DISPLAYER_CANVAS_H |
105 #endif //GRAPH_DISPLAYER_CANVAS_H |