ladanyi@6: // -*- C++ -*- // ladanyi@6: ladanyi@6: #ifndef GRAPH_DISPLAYER_CANVAS_H ladanyi@6: #define GRAPH_DISPLAYER_CANVAS_H ladanyi@6: hegyi@21: class GraphDisplayerCanvas; hegyi@21: ladanyi@6: #include hegyi@28: #include ladanyi@6: #include hegyi@19: #include ladanyi@6: #include ladanyi@6: #include ladanyi@6: ladanyi@6: ///This class is the canvas, on which the graph can be drawn. ladanyi@6: class GraphDisplayerCanvas : public Gnome::Canvas::CanvasAA ladanyi@6: { ladanyi@6: typedef Gnome::Canvas::CanvasAA Parent; ladanyi@6: ladanyi@6: public: hegyi@28: GraphDisplayerCanvas(Graph &, CoordinatesMap &, MapStorage &, MapWin *); ladanyi@6: virtual ~GraphDisplayerCanvas(); ladanyi@6: ladanyi@6: ///Changes the linewidth attribute according to the given map. ladanyi@6: ///\param mapname is the name of the map which contains the new values hegyi@28: int changeEdgeWidth (std::string mapname, Graph::Edge new_item=INVALID); ladanyi@6: ladanyi@6: ///Changes the linecolor attribute according to the given map. ladanyi@6: ///\param mapname is the name of the map which contains the new values hegyi@28: int changeEdgeColor (std::string mapname, Graph::Edge new_item=INVALID); ladanyi@6: ladanyi@6: ///Changes the text of line attribute according to the given map. ladanyi@6: ///\param mapname is the name of the map which contains the new values hegyi@28: int changeEdgeText (std::string mapname, Graph::Edge new_item=INVALID); hegyi@28: hegyi@28: ///Changes the linewidth attribute according to the given map. hegyi@28: ///\param mapname is the name of the map which contains the new values hegyi@28: int changeNodeRadius (std::string mapname, Graph::Node new_item=INVALID); hegyi@28: hegyi@28: ///Changes the linecolor attribute according to the given map. hegyi@28: ///\param mapname is the name of the map which contains the new values hegyi@28: int changeNodeColor (std::string mapname, Graph::Node new_item=INVALID); hegyi@28: hegyi@28: ///Changes the text of line attribute according to the given map. hegyi@28: ///\param mapname is the name of the map which contains the new values hegyi@28: int changeNodeText (std::string mapname, Graph::Node new_item=INVALID); ladanyi@6: ladanyi@6: ///Callback for 'ViewZoomIn' action. ladanyi@6: virtual void zoomIn(); ladanyi@6: ///Callback for 'ViewZoomOut' action. ladanyi@6: virtual void zoomOut(); ladanyi@6: ///Callback for 'ViewZoomFit' action. ladanyi@6: virtual void zoomFit(); ladanyi@6: ///Callback for 'ViewZoom100' action. ladanyi@6: virtual void zoom100(); ladanyi@6: ///Sets the scroll region of the convas to the bounding box of the graph. ladanyi@6: void updateScrollRegion(); ladanyi@6: hegyi@9: ///This function changes the tool in the graph-editor's hand hegyi@9: void changeEditorialTool(int); hegyi@9: ladanyi@6: protected: ladanyi@6: ladanyi@6: //maximizing, minimizing, restoring window, etc. ladanyi@6: virtual bool on_expose_event(GdkEventExpose *); ladanyi@6: ladanyi@6: private: ladanyi@6: ladanyi@6: ///This function is responsible for the correct ladanyi@6: ///reaction of any action happened in the territory ladanyi@6: ///of the canvas hegyi@25: ///DEPRECATED!!!! hegyi@30: bool eventHandler(GdkEvent* e, Node n); ladanyi@6: hegyi@9: ///actual event handler hegyi@9: /// hegyi@9: ///Actual event handler should be stored, to be able to disconnect it and later reconnect it. hegyi@9: sigc::connection actual_handler; hegyi@9: hegyi@9: ///event handler for the case when move-tool is active hegyi@30: bool moveEventHandler(GdkEvent*); hegyi@9: ///event handler for the case when create_node-tool is active hegyi@30: bool createNodeEventHandler(GdkEvent*); hegyi@9: ///event handler for the case when create_edge-tool is active hegyi@30: bool createEdgeEventHandler(GdkEvent*); hegyi@13: ///event handler for the case when eraser-tool is active hegyi@30: bool eraserEventHandler(GdkEvent*); hegyi@32: ///event handler for the case when edge map editor tool is active hegyi@30: bool edgeMapEditEventHandler(GdkEvent*); hegyi@32: ///event handler for the case when node map editor tool is active hegyi@32: bool nodeMapEditEventHandler(GdkEvent*); hegyi@13: hegyi@34: ///event handler for the case when the entry widget is changed hegyi@34: bool entryWidgetChangeHandler(GdkEvent*); hegyi@34: hegyi@21: public: hegyi@25: ///Moves the text to new place hegyi@30: void textReposition(xy); hegyi@25: ///Activates an edge belonging to a BrokenEdge hegyi@35: /// hegyi@35: ///After we have activated an edge this way, hegyi@35: ///the GDC object will know, which edge is under forming hegyi@35: ///therefore it can redraw the necessarz elementy on the canvas, hegyi@35: ///for example the text belonging to the \ref BrokenEdge can be hegyi@35: ///redrawn (\ref textReposition). hegyi@30: void toggleEdgeActivity(BrokenEdge*, bool); hegyi@25: hegyi@25: public: hegyi@21: ///\return the actual tool in hand hegyi@30: int getActualTool(); hegyi@21: hegyi@37: ///creates a new Nodemap hegyi@46: int addNewNodeMap(double,std::string); hegyi@37: ///creates a new Edgemap hegyi@46: int addNewEdgeMap(double,std::string); hegyi@37: hegyi@21: private: hegyi@14: ///Deletes the given element. hegyi@30: void deleteItem(NodeIt); hegyi@14: ///Deletes the given element. hegyi@30: void deleteItem(EdgeIt); hegyi@16: ///Deletes the given element. hegyi@30: void deleteItem(Graph::Edge); hegyi@9: hegyi@21: private: hegyi@21: ladanyi@6: ///The graph, on which we work hegyi@30: Graph & g; ladanyi@6: ladanyi@6: ///Map of nodes of graph ladanyi@6: Graph::NodeMap nodesmap; ladanyi@6: ladanyi@6: ///Map of edges of graph hegyi@19: Graph::EdgeMap edgesmap; ladanyi@6: ladanyi@6: ///Map of texts to write on edges ladanyi@6: Graph::EdgeMap edgetextmap; ladanyi@6: hegyi@28: ///Map of texts to write on nodes hegyi@28: Graph::NodeMap nodetextmap; hegyi@28: ladanyi@6: ///Group of graphical elements of displayed_graph ladanyi@6: Gnome::Canvas::Group displayed_graph; ladanyi@6: hegyi@32: ///Map editor entry hegyi@32: Gtk::Entry entrywidget; hegyi@32: hegyi@32: ///GnomeCanvas holder for entry hegyi@32: Gnome::Canvas::Widget * canvasentrywidget; hegyi@32: ladanyi@6: ///Here we store the maps that can be displayed through properties. hegyi@40: MapStorage & mapstorage; ladanyi@6: ladanyi@6: ///Indicates whether the button of mouse is pressed or not hegyi@20: int isbutton; ladanyi@6: hegyi@21: ///Stores the actual tool in hand hegyi@21: int actual_tool; hegyi@21: ladanyi@6: ///At this location was the mousebutton pressed. ladanyi@6: ///It helps to calculate the distance of dragging. ladanyi@6: double clicked_x, clicked_y; ladanyi@6: ladanyi@6: ///Remembers which Gnome::Canvas::Item was pressed. ladanyi@6: ///this variable is needed, because ladanyi@6: ///1. we cannot query the item at he cursor as fast as it could not cause a Segmentation Fault ladanyi@6: ///2. we would like to handle only ony item per movement, therefore quering it is not a working solution hegyi@11: Gnome::Canvas::Item * active_item, * target_item; hegyi@9: Graph::NodeIt active_node; hegyi@11: Graph::EdgeIt active_edge; hegyi@35: Graph::EdgeIt forming_edge; hegyi@35: hegyi@35: std::string nodemap_to_edit, edgemap_to_edit; ladanyi@6: ladanyi@6: static const int zoom_step = 5; hegyi@19: hegyi@28: ///We need to store mapwin, to be able to ask the appropriate values for properties of new items. hegyi@28: MapWin * mapwin; hegyi@28: ladanyi@6: }; ladanyi@6: ladanyi@6: #endif //GRAPH_DISPLAYER_CANVAS_H