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Create A Program to Create a Music Preview System in Java Assignment Solution.


Write a program to create a music preview system in java language.

Requirements and Specifications

Description: I need help with a java assignment to create a method for JavaFX project I am working on. It is a project that prints a document displayed on a javafx pane. The pane can be long or short depending on input of user. The problem I am having is when the pane height is too long to fit in one page, the printer does not print the rest of it on a second page. Instead it cuts off after 1 page. I need a method that can print the pane on as many pages as needed depending on its height instead of just fitting to one page and cutting off. I have attached the code I have so far. Please scroll to the printHandle() method I made. That is where I need help with.
Source Code
package GUI;
import java.io.IOException;
import instruments.Guitar;
import instruments.Drumset;
import javafx.application.Application;
import javafx.beans.property.BooleanProperty;
import javafx.beans.property.SimpleBooleanProperty;
import javafx.fxml.FXML;
import javafx.print.PageLayout;
import javafx.print.PageOrientation;
import javafx.print.Paper;
import javafx.print.Printer;
import javafx.print.PrinterJob;
import javafx.scene.control.Button;
import javafx.scene.image.ImageView;
import javafx.scene.image.WritableImage;
import javafx.scene.layout.AnchorPane;
import javafx.scene.layout.Pane;
import javafx.scene.transform.Scale;
import javafx.scene.transform.Translate;
import javafx.stage.Window;
import javafx.stage.Stage;
import models.ScorePartwise;
public class PreviewMusic extends Application{
 private MainViewController mvc;
 @FXML private Pane pane;
 public Window convertWindow;
    private Button printButton;
    final BooleanProperty printButtonPressed = new SimpleBooleanProperty(false);
    private ScorePartwise scorePartwise;
    @FXML private AnchorPane anchorPane;
 public PreviewMusic() {}
 public void initialize() {}
    public void setMainViewController(MainViewController mvcInput) {
     mvc = mvcInput;
    // We can use this method to update the music sheet
    public void update() throws IOException
     // Get the ScorePartwise object directly
     scorePartwise = mvc.converter.getScorePartwise();
     /* Get the list of measures from the ScorePartwise object.
      * We get the list of Parts, there should be only one Part in this list,
      * so we get the first item, which is the Part, then we get the measures from that Part.
     String instrument = scorePartwise.getPartList().getScoreParts().get(0).getPartName();
     if(instrument == "Guitar") {
      Guitar g = new Guitar(scorePartwise, pane);
     else if (instrument == "Drumset") {
   Drumset d = new Drumset(scorePartwise, pane);
 public void printHandle() {
  printButton.setOnAction( aEvent -> {
  WritableImage screenshot = pane.snapshot(null, null);
  Printer printer = Printer.getDefaultPrinter();
  PageLayout layout = printer.createPageLayout(Paper.A4, PageOrientation.PORTRAIT, Printer.MarginType.DEFAULT);
  double pagePrintableWidth = layout.getPrintableWidth();
  double pagePrintableHeight = layout.getPrintableHeight();
  final double scaleX = pagePrintableWidth / screenshot.getWidth();
        final double scaleY = pagePrintableHeight / screenshot.getHeight();
        final ImageView print_node = new ImageView(screenshot);
        print_node.getTransforms().add(new Scale(scaleX, scaleX));
  PrinterJob printSheet = PrinterJob.createPrinterJob();
  if (printSheet != null && printSheet.showPrintDialog(pane.getScene().getWindow())) {
   double numberOfPages = Math.ceil( scaleX / scaleY);
   Translate gridTransform = new Translate(0, 0);
   for(int i = 0; i < numberOfPages; i++)
    gridTransform.setY(-i * (pagePrintableHeight / scaleX));
    printSheet.printPage(layout, print_node);
 public void playHandle() {
  ScorePartwise scorePartwise = mvc.converter.getScorePartwise();
  String instrument = scorePartwise.getPartList().getScoreParts().get(0).getPartName();
  if(instrument == "Guitar") {
   Guitar g = new Guitar(scorePartwise, pane);
 // private Window openNewWindow(Parent root, String windowName) {
 // Stage stage = new Stage();
 // stage.setTitle(windowName);
 // stage.initModality(Modality.APPLICATION_MODAL);
 // stage.initOwner(MainApp.STAGE);
 // stage.setResizable(false);
 // Scene scene = new Scene(root);
 // stage.setScene(scene);
 // stage.show();
 // return scene.getWindow();
 // }
 public void handleGotoMeasure() {}
 public void start(Stage primaryStage) throws Exception {
  // TODO Auto-generated method stub