ladanyi@1442: // -*- C++ -*- // ladanyi@1442: ladanyi@1442: #ifndef GRAPH_DISPLAYER_CANVAS_H ladanyi@1442: #define GRAPH_DISPLAYER_CANVAS_H ladanyi@1442: hegyi@1501: class GraphDisplayerCanvas; hegyi@1501: ladanyi@1442: #include hegyi@1512: #include ladanyi@1442: #include hegyi@1499: #include ladanyi@1442: #include ladanyi@1442: #include ladanyi@1442: ladanyi@1442: ///This class is the canvas, on which the graph can be drawn. ladanyi@1442: class GraphDisplayerCanvas : public Gnome::Canvas::CanvasAA ladanyi@1442: { ladanyi@1442: typedef Gnome::Canvas::CanvasAA Parent; ladanyi@1442: ladanyi@1442: public: hegyi@1512: GraphDisplayerCanvas(Graph &, CoordinatesMap &, MapStorage &, MapWin *); ladanyi@1442: virtual ~GraphDisplayerCanvas(); ladanyi@1442: ladanyi@1442: ///Changes the linewidth attribute according to the given map. ladanyi@1442: ///\param mapname is the name of the map which contains the new values hegyi@1512: int changeEdgeWidth (std::string mapname, Graph::Edge new_item=INVALID); ladanyi@1442: ladanyi@1442: ///Changes the linecolor attribute according to the given map. ladanyi@1442: ///\param mapname is the name of the map which contains the new values hegyi@1512: int changeEdgeColor (std::string mapname, Graph::Edge new_item=INVALID); ladanyi@1442: ladanyi@1442: ///Changes the text of line attribute according to the given map. ladanyi@1442: ///\param mapname is the name of the map which contains the new values hegyi@1512: int changeEdgeText (std::string mapname, Graph::Edge new_item=INVALID); hegyi@1512: hegyi@1512: ///Changes the linewidth attribute according to the given map. hegyi@1512: ///\param mapname is the name of the map which contains the new values hegyi@1512: int changeNodeRadius (std::string mapname, Graph::Node new_item=INVALID); hegyi@1512: hegyi@1512: ///Changes the linecolor attribute according to the given map. hegyi@1512: ///\param mapname is the name of the map which contains the new values hegyi@1512: int changeNodeColor (std::string mapname, Graph::Node new_item=INVALID); hegyi@1512: hegyi@1512: ///Changes the text of line attribute according to the given map. hegyi@1512: ///\param mapname is the name of the map which contains the new values hegyi@1512: int changeNodeText (std::string mapname, Graph::Node new_item=INVALID); ladanyi@1442: ladanyi@1442: ///Callback for 'ViewZoomIn' action. ladanyi@1442: virtual void zoomIn(); ladanyi@1442: ///Callback for 'ViewZoomOut' action. ladanyi@1442: virtual void zoomOut(); ladanyi@1442: ///Callback for 'ViewZoomFit' action. ladanyi@1442: virtual void zoomFit(); ladanyi@1442: ///Callback for 'ViewZoom100' action. ladanyi@1442: virtual void zoom100(); ladanyi@1442: ///Sets the scroll region of the convas to the bounding box of the graph. ladanyi@1442: void updateScrollRegion(); ladanyi@1442: hegyi@1468: ///This function changes the tool in the graph-editor's hand hegyi@1468: void changeEditorialTool(int); hegyi@1468: ladanyi@1442: protected: ladanyi@1442: ladanyi@1442: //maximizing, minimizing, restoring window, etc. ladanyi@1442: virtual bool on_expose_event(GdkEventExpose *); ladanyi@1442: ladanyi@1442: private: ladanyi@1442: ladanyi@1442: ///This function is responsible for the correct ladanyi@1442: ///reaction of any action happened in the territory ladanyi@1442: ///of the canvas hegyi@1505: ///DEPRECATED!!!! hegyi@1524: bool eventHandler(GdkEvent* e, Node n); ladanyi@1442: hegyi@1468: ///actual event handler hegyi@1468: /// hegyi@1468: ///Actual event handler should be stored, to be able to disconnect it and later reconnect it. hegyi@1468: sigc::connection actual_handler; hegyi@1468: hegyi@1468: ///event handler for the case when move-tool is active hegyi@1524: bool moveEventHandler(GdkEvent*); hegyi@1468: ///event handler for the case when create_node-tool is active hegyi@1524: bool createNodeEventHandler(GdkEvent*); hegyi@1468: ///event handler for the case when create_edge-tool is active hegyi@1524: bool createEdgeEventHandler(GdkEvent*); hegyi@1485: ///event handler for the case when eraser-tool is active hegyi@1524: bool eraserEventHandler(GdkEvent*); hegyi@1550: ///event handler for the case when edge map editor tool is active hegyi@1524: bool edgeMapEditEventHandler(GdkEvent*); hegyi@1550: ///event handler for the case when node map editor tool is active hegyi@1550: bool nodeMapEditEventHandler(GdkEvent*); hegyi@1485: hegyi@1562: ///event handler for the case when the entry widget is changed hegyi@1562: bool entryWidgetChangeHandler(GdkEvent*); hegyi@1562: hegyi@1501: public: hegyi@1505: ///Moves the text to new place hegyi@1524: void textReposition(xy); hegyi@1505: ///Activates an edge belonging to a BrokenEdge hegyi@1579: /// hegyi@1579: ///After we have activated an edge this way, hegyi@1579: ///the GDC object will know, which edge is under forming hegyi@1579: ///therefore it can redraw the necessarz elementy on the canvas, hegyi@1579: ///for example the text belonging to the \ref BrokenEdge can be hegyi@1579: ///redrawn (\ref textReposition). hegyi@1524: void toggleEdgeActivity(BrokenEdge*, bool); hegyi@1505: hegyi@1505: public: hegyi@1501: ///\return the actual tool in hand hegyi@1524: int getActualTool(); hegyi@1501: hegyi@1585: ///creates a new Nodemap hegyi@1597: int addNewNodeMap(double,std::string); hegyi@1585: ///creates a new Edgemap hegyi@1597: int addNewEdgeMap(double,std::string); hegyi@1585: hegyi@1501: private: hegyi@1486: ///Deletes the given element. hegyi@1524: void deleteItem(NodeIt); hegyi@1486: ///Deletes the given element. hegyi@1524: void deleteItem(EdgeIt); hegyi@1496: ///Deletes the given element. hegyi@1524: void deleteItem(Graph::Edge); hegyi@1468: hegyi@1501: private: hegyi@1501: ladanyi@1442: ///The graph, on which we work hegyi@1524: Graph & g; ladanyi@1442: ladanyi@1442: ///Map of nodes of graph ladanyi@1442: Graph::NodeMap nodesmap; ladanyi@1442: ladanyi@1442: ///Map of edges of graph hegyi@1499: Graph::EdgeMap edgesmap; ladanyi@1442: ladanyi@1442: ///Map of texts to write on edges ladanyi@1442: Graph::EdgeMap edgetextmap; ladanyi@1442: hegyi@1512: ///Map of texts to write on nodes hegyi@1512: Graph::NodeMap nodetextmap; hegyi@1512: ladanyi@1442: ///Group of graphical elements of displayed_graph ladanyi@1442: Gnome::Canvas::Group displayed_graph; ladanyi@1442: hegyi@1550: ///Map editor entry hegyi@1550: Gtk::Entry entrywidget; hegyi@1550: hegyi@1550: ///GnomeCanvas holder for entry hegyi@1550: Gnome::Canvas::Widget * canvasentrywidget; hegyi@1550: ladanyi@1442: ///Here we store the maps that can be displayed through properties. hegyi@1589: MapStorage & mapstorage; ladanyi@1442: ladanyi@1442: ///Indicates whether the button of mouse is pressed or not hegyi@1500: int isbutton; ladanyi@1442: hegyi@1501: ///Stores the actual tool in hand hegyi@1501: int actual_tool; hegyi@1501: ladanyi@1442: ///At this location was the mousebutton pressed. ladanyi@1442: ///It helps to calculate the distance of dragging. ladanyi@1442: double clicked_x, clicked_y; ladanyi@1442: ladanyi@1442: ///Remembers which Gnome::Canvas::Item was pressed. ladanyi@1442: ///this variable is needed, because ladanyi@1442: ///1. we cannot query the item at he cursor as fast as it could not cause a Segmentation Fault ladanyi@1442: ///2. we would like to handle only ony item per movement, therefore quering it is not a working solution hegyi@1474: Gnome::Canvas::Item * active_item, * target_item; hegyi@1468: Graph::NodeIt active_node; hegyi@1474: Graph::EdgeIt active_edge; hegyi@1579: Graph::EdgeIt forming_edge; hegyi@1579: hegyi@1579: std::string nodemap_to_edit, edgemap_to_edit; ladanyi@1442: ladanyi@1442: static const int zoom_step = 5; hegyi@1499: hegyi@1512: ///We need to store mapwin, to be able to ask the appropriate values for properties of new items. hegyi@1512: MapWin * mapwin; hegyi@1512: ladanyi@1442: }; ladanyi@1442: ladanyi@1442: #endif //GRAPH_DISPLAYER_CANVAS_H