SophiaPretty

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Category > Computer Science Posted 04 Nov 2017 My Price 10.00

Confused on what changes to make on GraphPanelFX.

Have to follow tasks on rubric. Confused on what changes to make on GraphPanelFX.

  • import javax.swing.JOptionPane;

    import javafx.geometry.Insets;
    import javafx.geometry.Pos;
    import javafx.scene.Group;
    import javafx.scene.Parent;
    import javafx.scene.canvas.Canvas;
    import javafx.scene.canvas.GraphicsContext;
    import javafx.scene.control.Button;
    import javafx.scene.layout.BorderPane;
    import javafx.scene.layout.HBox;
    import javafx.scene.layout.StackPane;


    /**
     * This panel is the basic pane, inside which other panes are placed. 
     * @author ralexander
     */
    public class MainPaneFX {

        private BorderPane mainPane;
        private HBox buttonPanel;
        private GraphPanelFX graphPanel;
        private Canvas graphCanvas;
        private Button graphFunctionButton, exitButton;
       
        //The manager is the way the GUI communicates with the worker code
        private GraphManager graphManager;
       
        /**
         * The MainPanel constructor sets up the GUI with two buttons and a display area. 
         */
        MainPaneFX(double CANVAS_WIDTH, double CANVAS_HEIGHT) {

            mainPane = new BorderPane();

            //create the dataManager instance
            graphManager = new GraphManager();
           
            //create the exitButton
            exitButton = new Button("Exit");
            //exitButton.setToolTipText("Exit the program");
            exitButton.setOnAction(event ->
                 System.exit(0) );
                 
            //create the button to start graphing
            graphFunctionButton = new Button("Graph a Function");
            //graphFunctionButton.setToolTipText("Select a function and graph it");

            /*
             * When the button pushed was the graph function button, user is prompted to select one of the functions,
             * and is asked for the left and right limits (extents) to plot the function.
             */
            graphFunctionButton.setOnAction(event -> {
                graphCanvas.setVisible(false);
                 int choice = 0;
                 double left=0, right=0;
                 choice = askForFunction("Select one of the following functions to graph (by number):\n"+graphManager.toString());
                 if(choice != 0) {
                     graphManager.setFunctionChoice(choice);
                     try {
                         left = askForExtent("Enter the left extent of the function domain");
                         right = askForExtent("Enter the right extent of the function domain");
                         graphManager.setExtents(left, right, graphCanvas.getWidth());
                         graphPanel.drawGraph();
                     } catch (NullPointerException e) {
                         JOptionPane.showMessageDialog(null, "No entry: exiting");
                     }
                     graphCanvas.setVisible(true);
                 }
            });
            //create the buttonPanel
            buttonPanel = new HBox();
            //buttonPanel.setPreferredSize(new Dimension(600,50));
            buttonPanel.setVisible(true);
            buttonPanel.setAlignment(Pos.CENTER);
            HBox.setMargin(exitButton, new Insets(10,10,10,10));
            HBox.setMargin(graphFunctionButton, new Insets(10,10,10,10));
            buttonPanel.getChildren().addAll(exitButton, graphFunctionButton);
            //buttonPanel.add(graphFunctionButton);
            //add the panel to the bottom section of the main panel
            mainPane.setBottom(buttonPanel);
                 
            //panel to hold the graph
            graphPanel = new GraphPanelFX(graphManager, CANVAS_WIDTH, CANVAS_HEIGHT);
            graphCanvas = graphPanel.getGraphCanvas(graphPanel);       
       
            graphCanvas.setVisible(true);
            mainPane.setCenter(graphCanvas);

        }

        public GraphManager getGraphManager() {
            return graphManager;
        }

        private int askForFunction(String str) {
            boolean error=false;
            int returnVal=0;
            do {
                try {
                    returnVal = Integer.parseInt(JOptionPane.showInputDialog
                            (null, str));
                    if (returnVal<1 || returnVal>5) {
                        error = true;
                        JOptionPane.showMessageDialog(null, "Choice of function must be an integer between 1 and 5");
                        }
                    else error = false;
                }
                catch (NumberFormatException e) {
                    JOptionPane.showMessageDialog(null, "Input Error: "+e);
                    error = true;
                }
            } while(error);
            return returnVal;
        }
       
        private double askForExtent(String str) throws NullPointerException {
            boolean error=false;
            double returnVal=0;
            do {
                 try {
                     returnVal = Double.parseDouble(JOptionPane.showInputDialog(null, str));
                     error = false;
                  }
                 
                  catch (NumberFormatException e) {
                     JOptionPane.showMessageDialog(null, "Input Error - "+e);
                      error = true;
                 }
             } while(error);
            return returnVal;
        }
       
        public BorderPane getMainPane() {
            // TODO Auto-generated method stub
            return mainPane;
        }

    }

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SophiaPretty
(5)
Status NEW Posted 04 Nov 2017 06:11 AM My Price 10.00

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