mapcanvas.java

A part public bus simulation system, mainly about map design, java file, groupwork, helpful to the b

	 	pointClicked = convertScreenToGrid(arg0.getPoint());

	 	//check which mode it is
	 	switch (mode) {
	 	case Depot:
	 		//attempt to add Depot
	 		addDepot();
	 		break;
	 	case ROAD1:
	 		//attempt to add road
	 		addRoad1();
	 		break;
	 	case ROAD2:
	 		//attempt to add road
	 		addRoad2();
	 		break;
 	 	case ROAD3:
	 		//attempt to add road
	 		addRoad3();
	 		break;
 	 	case ROAD4:
	 		//attempt to add road
	 		addRoad4();
	 		break;   
	 	case ROAD5:
	 		//attempt to add road
	 		addRoad5();
	 		break;
	 	case ROAD6:
	 		//attempt to add road
	 		addRoad6();
	 		break;                        
	 	case ROADJUNCTION:
	 		//attempt to add road junction
	 		addRoadJunction();
	 		break;
	 	case BUSSTOP1:
	 		//attempt to add bus stop
	 		addBusStop1();
	 		break;
 	 	case BUSSTOP2:
	 		//attempt to add bus stop
	 		addBusStop2();                       
	 	case MOVE:
	 		//attempt to move selected object to new location
	 		moveSelectedObject();
	 		break;
	 	case SELECT:
	 		//attempt to select object
	 		selectPoint(arg0.getPoint());
	 		break;
	 	case BUSROUTE:
	 		//attempt to create bus route
	 		createBusRoute();
	 		break;
	 	}	 	
	 }
	 
	 /*
	  * function automatically called when mouse is dragged
	  * functionality not used
	  */
	 public void mouseDragged(MouseEvent arg0) {
	 }
	 
	 /*
	  * function automatically called when mouse enters the mapCanvas
	  * functionality not used
	  */
	 public void mouseEntered(MouseEvent arg0) {
	 }
	 
	 /*
	  * function automatically called when mouse is exit the mapCanvas
	  * functionality not used
	  */
	 public void mouseExited(MouseEvent arg0) {
	 }

	 /*
	  * function automatically called when mouse is moved
	  * sets mouseOverPoint to be the coordinate which the mouse is
	  * over (grid coordinates)
	  */
	 public void mouseMoved(MouseEvent arg0) {
	 	//check if current point mouse is over is the same as previous point
	 	if (!mouseOverPoint.equals(convertScreenToGrid(arg0.getPoint()))) {
	 		//point is different, set current mouseOverPoint as new coordinate
	 		mouseOverPoint.setLocation(convertScreenToGrid(arg0.getPoint()));
	 		//update status
	 		frame.setCoordinates(mouseOverPoint);
	 		//call repaint() to draw temp line
	 		repaint();
	 	}
	 }
	 
	 /*
	  * function automatically called when mouse is pressed
	  * functionality not used
	  */
	 public void mousePressed(MouseEvent arg0) {
	 }
	 
	 /*
	  * function automatically called when mouse is released
	  * functionality not used
	  */
	 public void mouseReleased(MouseEvent arg0) {
	 }
	 
	 /*
	  * function is called to move selected object to new point 
	  */
	 private void moveSelectedObject() {
	 	if (mapData.move(pointClicked)) {
	 		//object successfully moved
	 		frame.setStatus("Object moved");
	 	} else {
	 		//fail to move object
	 		frame.setStatus("Object could not be moved");
	 	}
	 }
	 
	 /*
	  * function automatically called when there is a need to paintComponent
	  * calls functions to draw: grid and respective objects
	  */
	 protected void paintComponent(Graphics g) {
	 	//call super function
	 	super.paintComponent(g);
	 	//create new graphics so as not to mess up with original graphics
	 	Graphics g2 = g.create();
	 	//draw the grid of the map
	 	drawGrid(g2);
	 	
	 	//check each point in the map for objects
	 	for (int x=0;x<20;x++) {
	 		for (int y=0;y<20;y++) {
	 			//for each point in map from 0,0 to 19,19
	 			Point tmpPt = new Point(x,y);
                                //tmpPt is a road
                                if (mapData.isRoad1(tmpPt)) {
                                        //tmpPt is a  road 1,draw it
                                        drawRoad1(g,tmpPt);
                                } 
                                else if (mapData.isRoad2(tmpPt)) {
                                        //tmpPt is a  road 2,draw it
                                        drawRoad2(g,tmpPt);
                                }    
                                else if (mapData.isRoad3(tmpPt)) {
                                        //tmpPt is a  road 3,draw it
                                        drawRoad3(g,tmpPt);
                                }    
                                 else if (mapData.isRoad4(tmpPt)) {
                                        //tmpPt is a  road 4,draw it
                                        drawRoad4(g,tmpPt);
                                }    
                                 else if (mapData.isRoad5(tmpPt)) {
                                        //tmpPt is a  road 5,draw it
                                        drawRoad5(g,tmpPt);
                                }    
                                 else if (mapData.isRoad6(tmpPt)) {
                                        //tmpPt is a  road 6,draw it
                                        drawRoad6(g,tmpPt);
                                }     
                                else if (mapData.isRoadJunction(tmpPt)) {
                                        //tmpPt is a  road 6,draw it
                                        drawRoadJunction(g,tmpPt);
                                }      
                                //check if there's anything on top of the road
                                if (mapData.isTrafficLight(tmpPt)) {
                                        //traffic light is on top, draw it
                                        drawTrafficLight(g,tmpPt);
                                }
                                if (mapData.isBusStop1(tmpPt)) {
                                        //bus stop is on top, draw it
                                        drawBusStop1(g,tmpPt);
                                } else if (mapData.isBusStop2(tmpPt)) {
                                        //bus interchange it on top, draw it
                                        drawBusStop2(g,tmpPt);
                                }
	 			//not a road then
	 			if (mapData.isDepot(tmpPt)) {
	 				//is a Depot, draw it
	 				drawDepot(g,tmpPt);
	 			} 
	 		}		
	 	}
                if (mode==BUSROUTE) {
                    //is in bus route mode, draw bus route
                    drawBusRoute(g);
	 	}
	 	//draws selection box
	 	drawSelected(g);
	 }
	 
	 /*
	  * function is called to select the object on point pt
	  * it checks which area is clicked to determine if any overlay
	  * object is selected instead(busstop,trafficlight)
	  * also,if there is no object, it sets a point as selected instead
	  * when no object is selected, selectedPoint is set, else, it is null
	  */
	 private void selectPoint(Point pt) {
	 	Point pt1 = convertScreenToGrid(pt);
                //some object will be selected, set selectedPoint as null
                selectedPoint=null;

                //area clicked is road region
                //select the underlying road
                if (mapData.setSelected(pt1,ID_ROAD1)) {
                        frame.setStatus("Road 1 selected");
                } else if(mapData.setSelected(pt1,ID_ROAD2)){
                        frame.setStatus("Road 2 selected");
                } else if(mapData.setSelected(pt1,ID_ROAD3)){
                        frame.setStatus("Road 3 selected");
                } else if(mapData.setSelected(pt1,ID_ROAD4)){
                        frame.setStatus("Road 4 selected");
                } else if(mapData.setSelected(pt1,ID_ROAD5)){
                        frame.setStatus("Road 5 selected");
                } else if(mapData.setSelected(pt1,ID_ROAD6)){
                        frame.setStatus("Road 6 selected");
                } else if(mapData.setSelected(pt1,ID_ROADJUNCTION)){
                        frame.setStatus("Road Junction selected");
                }else if (mapData.setSelected(pt1,ID_BUSSTOP1)) {
                        frame.setStatus("Bus stop 1 selected");
                }else if (mapData.setSelected(pt1,ID_BUSSTOP2)) {
                        frame.setStatus("Bus stop 2 selected");
                } 
                //point is not on road, check is there any tool on point
                else if (mapData.setSelected(pt1,ID_Depot)) {
                        //Depot exist,set selectedPoint as null
                        selectedPoint = null;
                        frame.setStatus("Depot selected");
                } else {
                        //nothing on the road, selected the point
                        selectedPoint = pt1;
                }
                repaint();
	 }
	 
	 /*
	  * function set canvasHeight
	  */
	 public void setCanvasHeight(int canvasHeight) {
	 	this.mapSizeY = canvasHeight;
	 }

	 /*
	  * function set canvasWidth
	  */
	 public void setCanvasWidth(int canvasWidth) {
	 	this.mapSizeX = canvasWidth;
	 }
	 
	 /*
	  * functions attempts to cut selected object from mapData
	  * and output results in status
	  */
	 public void cut() {
	 	//check if an object was selected
	 	if (selectedPoint!=null) {
	 		frame.setStatus("No object was selected");
	 		return;
	 	} 
	 	//object was selected, proceed to cut
	 	if (mapData.cut()) {
	 		//cut success
	 		frame.setStatus("Selected object cut");
	 	} else {
	 		//cut fail
	 		frame.setStatus("Selected object could not be cut");
	 	}
	 }
	 
	 /*
	  * functions attempts to copy selected object from mapData
	  * and output results in status
	  */
	 public void copy() {
	 	//check if an object was selected
	 	if (selectedPoint!=null) {
	 		frame.setStatus("No object was selected");
	 		return;
	 	} 
	 	//object was selected, proceed to cut
	 	if (mapData.copy()) {
	 		//copy success
	 		frame.setStatus("Selected object copied");
	 	} else {
	 		//copy fail
	 		frame.setStatus("Selected object could not be copied");
	 	}
	 }
	 
	 /*
	  * functions attempts to paste selected object to mapData
	  * and output results in status
	  */
	 public void paste() {
	 	
	 	if (mapData.paste(pointClicked)) {
	 		frame.setStatus("Selected object pasted");
	 	} else {
	 		frame.setStatus("Selected object could not be pasted");
	 	}
	 }
	 
	 /*
	  * functions attempts to delete selected object from mapData
	  * and output results in status
	  */
	 public void delete() {
	 	//check if an object was selected
	 	if (selectedPoint!=null) {
	 		frame.setStatus("No object was selected");
	 		return;
	 	} 
	 	//object was selected
	 	if (mapData.removeSelected()) {
	 		//delete sucess
	 		frame.setStatus("Selected object deleted");
	 	} else {
	 		//delete fails
	 		frame.setStatus("Selected object could not be deleted");
	 	}		
	 }
	 
	 /*
	  * function sets mode of the mapCanvas which determine operation of
	  * mapCanvas
	  * also, it clears temp data used to display info to user(storepoint
	  * and tempBusRoute 
	  */	 
	 public void setMode(int mode) {
	 	//clear storePoint as mode changes
	 	storePoint = null;
	 	//clear busRoute as mode changes
	 	tempBusRoute = null;
	 	displayedBusRoute=null;
	 	//set the mode
	 	this.mode=mode;
	 }
	 
	 /*
	  * functions sets the main frame as reference to mapCanvas
	  * this is so that mapCanvas can call function in main frame to
	  * interact with other component in main frame 
	  */
	 public void setFrame(CmeGUI frame) {
	 	this.frame = frame;
	 }

	 /*
	  * function called whenever data in mapData changes, this is
	  * mainly so that mapCanvas can repaint itself only when necessary
	  * instead of repaint itself every fixed interval
	  */
	 public void update(Observable arg0, Object arg1) { 	
	 	//update selected property in case selectedTool changes
	 	int selectedToolID=0;
	 	//check if selected tool is of class AreaTools
	 	if (mapData.getSelected() instanceof AreaTools && mode!=BUSROUTE) {
	 		//procees to check whether it is a road
	 		AreaTools a = (AreaTools) mapData.getSelected();
	 		if (a.getID()==ID_ROAD1) {
	 			selectedToolID = ROAD1;
	 		} else if (a.getID()==ID_ROAD2) {
	 			selectedToolID = ROAD2;
	 		} else if (a.getID()==ID_ROAD3) {
	 			selectedToolID = ROAD3;
	 		} else if (a.getID()==ID_ROAD4) {
	 			selectedToolID = ROAD4; 
	 		} else if (a.getID()==ID_ROAD5) {
	 			selectedToolID = ROAD5;      
	 		} else if (a.getID()==ID_ROAD6) {
	 			selectedToolID = ROAD6;  
	 		} else if (a.getID()==ID_ROADJUNCTION) {
	 			selectedToolID = ROADJUNCTION;                                
	 		} else if (a.getID()==ID_BUSROUTE) {
	 			selectedToolID = BUSROUTE;
	 		}
	 		//set the propertyValue of propertyPane to be
	 		//name or bus no of selected tool
	 		frame.setPropertyValue(a.getName());
		 	//set property selected of propertyPane to ID of selected tool
		 	frame.setPropertySelected(selectedToolID);
	 	}
	 	//repaint the whole mapCanvas to reflect changes in data
	 	repaint();
	 }
	 
	 /*
	  * function sets the name of selected tool if it has a name property
	  * this function is to be called by main frame for interactivity between
	  * mapCanvas and propertyPane
	  */
	 public void setSelectedValue(String text) {
	 	Tools a = mapData.getSelected();
	 	//check if value is for busRoute
	 	if (mode==BUSROUTE) {
	 		print("busroute");
	 		//value is for bus route
	 		//set bus number to text
	 		int busNo = Integer.parseInt(text);
	 		displayedBusRoute.setBusNum(busNo);	 		
		 	//call busRouteDialog to update the bus route dialog
		 	frame.updateBusRouteDialog();
	 	} else if (a instanceof AreaTools) {
	 		print("areatools");
		 	//value is for AreaTools
	 		//set name to text
	 		AreaTools a2 = (AreaTools) a;
	 		a2.setName(text);
	 	}
	 }

	/*
	  * functions sets the displayedBusRoute.
	  * this function should be called by main frame for interactivity between
	  * mapCanvas and busRouteDialog
	  */
	 public void setDisplayedBusRoute(BusRoute busRoute) {
	 	displayedBusRoute = busRoute;
	 	//sets property page to display bus number of displayedBusRoute
	 	frame.setPropertyValue(String.valueOf(displayedBusRoute.getBusNum()));
	 	//repaints mapCanvas to reflect the change in displayedBusRoute
	 	repaint();
	 }
	 
	 /*
	  * function sets mapData to be used
	  */
	 public void setMapData(MapData mapData) {
	 	//set mapData
	 	this.mapData=mapData;
	 	//adds itself as observer of mapData
	 	this.mapData.addObserver(this);
	 	
	 	//clear selectedPoint
	 	selectedPoint=null;
	 	//clear pointClicked
	 	pointClicked=null;
	 	//clear displayedBusRoute
	 	displayedBusRoute=null;
	 	//repaint canvas
	 	repaint();
	 }
	private void print(String string) {
		// TODO Auto-generated method stub
		System.out.println(string);
	}
}