demonstrate the Java 1.4 printing API : PrintJob « 2D Graphics « Java Tutorial

 * Copyright (c) 2004 David Flanagan.  All rights reserved.
 * This code is from the book Java Examples in a Nutshell, 3nd Edition.
 * It is provided AS-IS, WITHOUT ANY WARRANTY either expressed or implied.
 * You may study, use, and modify it for any non-commercial purpose,
 * including teaching and use in open-source projects.
 * You may distribute it non-commercially as long as you retain this notice.
 * For a commercial use license, or to purchase the book, 
 * please visit
//package je3.print;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.Frame;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.JobAttributes;
import java.awt.PageAttributes;
import java.awt.PrintJob;
import java.awt.Toolkit;
import java.awt.image.BufferedImage;
import java.awt.print.PageFormat;
import java.awt.print.Printable;
import java.awt.print.PrinterException;
import java.awt.print.PrinterJob;

import javax.print.Doc;
import javax.print.DocFlavor;
import javax.print.DocPrintJob;
import javax.print.PrintException;
import javax.print.PrintService;
import javax.print.PrintServiceLookup;
import javax.print.ServiceUI;
import javax.print.SimpleDoc;
import javax.print.StreamPrintService;
import javax.print.StreamPrintServiceFactory;
import javax.print.attribute.HashPrintRequestAttributeSet;
import javax.print.attribute.PrintRequestAttributeSet;
import javax.print.attribute.standard.Chromaticity;
import javax.print.attribute.standard.OrientationRequested;
import javax.print.event.PrintJobAdapter;
import javax.print.event.PrintJobEvent;
import javax.swing.JComponent;
import javax.swing.JDialog;
import javax.swing.JFileChooser;
import javax.swing.JOptionPane;

 * This class extends JuliaSet2 and its print() and save() methods demonstrate
 * the Java 1.4 printing API.
public class JuliaSet3 extends JuliaSet2 {
  public JuliaSet3() {
    super(-.7, -.25);

  // This method overrides JuliaSet2.print() and demonstrates the javax.print
  // printing API.
  public void print() {
    // Get a list of all printers that can handle Printable objects.
    DocFlavor flavor = DocFlavor.SERVICE_FORMATTED.PRINTABLE;
    PrintService[] services = PrintServiceLookup.lookupPrintServices(flavor, null);

    // Set some define printing attributes
    PrintRequestAttributeSet printAttributes = new HashPrintRequestAttributeSet();
    printAttributes.add(OrientationRequested.LANDSCAPE); // landscape mode
    printAttributes.add(Chromaticity.MONOCHROME); // print in mono

    // Display a dialog that allows the user to select one of the
    // available printers and to edit the default attributes
    PrintService service = ServiceUI.printDialog(null, 100, 100, services, null, null,

    // If the user canceled, don't do anything
    if (service == null)

    // Now call a method defined below to finish the printing
    printToService(service, printAttributes);

  // This method is like print() above but prints to a PostScript file
  // instead of printing to a printer.
  public void save() throws IOException {
    // Find a factory object for printing Printable objects to PostScript.
    DocFlavor flavor = DocFlavor.SERVICE_FORMATTED.PRINTABLE;
    String format = "application/postscript";
    StreamPrintServiceFactory factory = StreamPrintServiceFactory
        .lookupStreamPrintServiceFactories(flavor, format)[0];

    // Ask the user to select a file and open the selected file
    JFileChooser chooser = new JFileChooser();
    if (chooser.showSaveDialog(this) != JFileChooser.APPROVE_OPTION)
    File f = chooser.getSelectedFile();
    FileOutputStream out = new FileOutputStream(f);

    // Obtain a PrintService that prints to that file
    StreamPrintService service = factory.getPrintService(out);

    // Do the printing with the method below
    printToService(service, null);

    // And close the output file.

  // Print the Julia set to the sepecifed PrintService using the specified
  // attributes.
  public void printToService(PrintService service, PrintRequestAttributeSet printAttributes) {
    // Wrap ourselves in the PrintableComponent class defined by JuliaSet2.
    String title = "Julia set for c={" + cx + "," + cy + "}";
    Printable printable = new PrintableComponent(this, title);

    // Now create a Doc that encapsulate the Printable object and its type
    DocFlavor flavor = DocFlavor.SERVICE_FORMATTED.PRINTABLE;
    Doc doc = new SimpleDoc(printable, flavor, null);

    // Java 1.1 uses PrintJob.
    // Java 1.2 uses PrinterJob.
    // Java 1.4 uses DocPrintJob. Create one from the service
    DocPrintJob job = service.createPrintJob();

    // Set up a dialog box to monitor printing status
    final JOptionPane pane = new JOptionPane("Printing...", JOptionPane.PLAIN_MESSAGE);
    JDialog dialog = pane.createDialog(this, "Print Status");
    // This listener object updates the dialog as the status changes
    job.addPrintJobListener(new PrintJobAdapter() {
      public void printJobCompleted(PrintJobEvent e) {
        pane.setMessage("Printing complete.");

      public void printDataTransferCompleted(PrintJobEvent e) {
        pane.setMessage("Document transfered to printer.");

      public void printJobRequiresAttention(PrintJobEvent e) {
        pane.setMessage("Check printer: out of paper?");

      public void printJobFailed(PrintJobEvent e) {
        pane.setMessage("Print job failed");

    // Show the dialog, non-modal.

    // Now print the Doc to the DocPrintJob
    try {
      job.print(doc, printAttributes);
    } catch (PrintException e) {
      // Display any errors to the dialog box

class JuliaSet2 extends JuliaSet1 {
  public JuliaSet2() {
    this(.4, .4);
  } // Display a different set by default

  public JuliaSet2(double cx, double cy) {
    super(cx, cy);

  // This method demonstrates the Java 1.2 printing API.
  // Test it using the ShowBean program.
  public void print() {
    // Java 1.1 used java.awt.PrintJob.
    // In Java 1.2 we use java.awt.print.PrinterJob
    PrinterJob job = PrinterJob.getPrinterJob();

    // Alter the default page settings to request landscape mode
    PageFormat page = job.defaultPage();
    page.setOrientation(PageFormat.LANDSCAPE); // landscape by default

    // Tell the PrinterJob what Printable object we want to print.
    // PrintableComponent is defined as an inner class below
    String title = "Julia set for c={" + cx + "," + cy + "}";
    Printable printable = new PrintableComponent(this, title);
    job.setPrintable(printable, page);

    // Call the printDialog() method to give the user a chance to alter
    // the printing attributes or to cancel the printing request.
    if (job.printDialog()) {
      // If we get here, then the user did not cancel the print job
      // So start printing, displaying a dialog for errors.
      try {
      } catch (PrinterException e) {
        JOptionPane.showMessageDialog(this, e.toString(), "PrinterException",

  // This inner class implements the Printable interface for an AWT component
  public static class PrintableComponent implements Printable {
    Component c;

    String title;

    public PrintableComponent(Component c, String title) {
      this.c = c;
      this.title = title;

    // This method should print the specified page number to the specified
    // Graphics object, abiding by the specified page format.
    // The printing system will call this method repeatedly to print all
    // pages of the print job. If pagenum is greater than the last page,
    // it should return NO_SUCH_PAGE to indicate that it is done. The
    // printing system may call this method multiple times per page.
    public int print(Graphics g, PageFormat format, int pagenum) {
      // This implemenation is always a single page
      if (pagenum > 0)
        return Printable.NO_SUCH_PAGE;

      // The Java 1.2 printing API passes us a Graphics object, but we
      // can always cast it to a Graphics2D object
      Graphics2D g2 = (Graphics2D) g;

      // Translate to accomodate the requested top and left margins.
      g2.translate(format.getImageableX(), format.getImageableY());

      // Figure out how big the drawing is, and how big the page
      // (excluding margins) is
      Dimension size = c.getSize(); // component size
      double pageWidth = format.getImageableWidth(); // Page width
      double pageHeight = format.getImageableHeight(); // Page height

      // If the component is too wide or tall for the page, scale it down
      if (size.width > pageWidth) {
        double factor = pageWidth / size.width; // How much to scale
        g2.scale(factor, factor); // Adjust coordinate system
        pageWidth /= factor; // Adjust page size up
        pageHeight /= factor;
      if (size.height > pageHeight) { // Do the same thing for height
        double factor = pageHeight / size.height;
        g2.scale(factor, factor);
        pageWidth /= factor;
        pageHeight /= factor;

      // Now we know the component will fit on the page. Center it by
      // translating as necessary.
      g2.translate((pageWidth - size.width) / 2, (pageHeight - size.height) / 2);

      // Draw a line around the outside of the drawing area and label it
      g2.drawRect(-1, -1, size.width + 2, size.height + 2);
      g2.drawString(title, 0, -15);

      // Set a clipping region so the component can't draw outside of
      // its won bounds.
      g2.setClip(0, 0, size.width, size.height);

      // Finally, print the component by calling its paint() method.
      // This prints the background, border, and children as well.
      // For swing components, if you don't want the background, border,
      // and children, then call printComponent() instead.

      // Tell the PrinterJob that the page number was valid
      return Printable.PAGE_EXISTS;

class JuliaSet1 extends JComponent {
  // These constants are hard-coded for simplicity
  double x1 = -1.5, y1 = -1.5, x2 = 1.5, y2 = 1.5; // Region of complex plane

  int width = 400, height = 400; // Mapped to these pixels

  double cx, cy; // This complex constant defines the set we display

  BufferedImage image; // The image we compute

  // We compute values between 0 and 63 for each point in the complex plane.
  // This array holds the color values for each of those values.
  static int[] colors;
  static { // Static initializer for the colors[] array.
    colors = new int[64];
    for (int i = 0; i < colors.length; i++) {
      colors[63 - i] = (i * 4 << 16) + (i * 4 << 8) + i * 4; // grayscale
      // (i*4) ^ ((i * 3)<<6) ^ ((i * 7)<<13); // crazy technicolor

  // No-arg constructor with default values for cx, cy.
  public JuliaSet1() {
    this(-1, 0);

  // This constructor specifies the {cx,cy} constant.
  // For simplicity, the other constants remain hardcoded.
  public JuliaSet1(double cx, double cy) { = cx; = cy;
    setPreferredSize(new Dimension(width, height));

  // This method computes a color value for each pixel of the image
  void computeImage() {
    // Create the image
    image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);

    // Now loop through the pixels
    int i, j;
    double x, y;
    double dx = (x2 - x1) / width;
    double dy = (y2 - y1) / height;
    for (j = 0, y = y1; j < height; j++, y += dy) {
      for (i = 0, x = x1; i < width; i++, x += dx) {
        // For each pixel, call testPoint() to determine a value.
        // Then map that value to a color and set it in the image.
        // If testPoint() returns 0, the point is part of the Julia set
        // and is displayed in black. If it returns 63, the point is
        // displayed in white. Values in-between are displayed in
        // varying shades of gray.
        image.setRGB(i, j, colors[testPoint(x, y)]);

  // This is the key method for computing Julia sets. For each point z
  // in the complex plane, we repeatedly compute z = z*z + c using complex
  // arithmetic. We stop iterating when the magnitude of z exceeds 2 or
  // after 64 iterations. We return the number of iterations-1.
  public int testPoint(double zx, double zy) {
    for (int i = 0; i < colors.length; i++) {
      // Compute z = z*z + c;
      double newx = zx * zx - zy * zy + cx;
      double newy = 2 * zx * zy + cy;
      zx = newx;
      zy = newy;
      // Check magnitude of z and return iteration number
      if (zx * zx + zy * zy > 4)
        return i;
    return colors.length - 1;

  // This method overrides JComponent to display the julia set.
  // Just scale the image to fit and draw it.
  public void paintComponent(Graphics g) {
    g.drawImage(image, 0, 0, getWidth(), getHeight(), this);

  // This method demonstrates the Java 1.1 java.awt.PrintJob printing API.
  // It also demonstrates the JobAttributes and PageAttributes classes
  // added in Java 1.3. Display the Julia set with ShowBean and use
  // the Command menu to invoke this print command.
  public void print() {
    // Create some attributes objects. This is Java 1.3 stuff.
    // In Java 1.1, we'd use a java.util.Preferences object instead.
    JobAttributes jattrs = new JobAttributes();
    PageAttributes pattrs = new PageAttributes();

    // Set some example attributes: monochrome, landscape mode
    // Print to file by default

    // Look up the Frame that holds this component
    Component frame = this;
    while (!(frame instanceof Frame))
      frame = frame.getParent();

    // Get a PrintJob object to print the Julia set with.
    // The getPrintJob() method displays a print dialog and allows the user
    // to override and modify the default JobAttributes and PageAttributes
    Toolkit toolkit = this.getToolkit();
    PrintJob job = toolkit.getPrintJob((Frame) frame, "JuliaSet1", jattrs, pattrs);

    // We get a null PrintJob if the user clicked cancel
    if (job == null)

    // Get a Graphics object from the PrintJob.
    // We print simply by drawing to this Graphics object.
    Graphics g = job.getGraphics();

    // Center the image on the page
    Dimension pagesize = job.getPageDimension(); // how big is page?
    Dimension panesize = this.getSize(); // how big is image?
    g.translate((pagesize.width - panesize.width) / 2, // center it
        (pagesize.height - panesize.height) / 2);

    // Draw a box around the Julia Set and label it
    g.drawRect(-1, -1, panesize.width + 2, panesize.height + 2);
    g.drawString("Julia Set for c={" + cx + "," + cy + "}", 0, -15);

    // Set a clipping region
    g.setClip(0, 0, panesize.width, panesize.height);

    // Now print the component by calling its paint method

    // Finally tell the printer we're done with the page.
    // No output will be generated if we don't call dispose() here.

16.49.1.Print with java.awt.PrintJob
16.49.2.Print Sample with java.awt.GraphicsPrint Sample with java.awt.Graphics
16.49.3.Print configuration
16.49.4.Listening for Print Job Attribute Changes
16.49.5.Determining When a Print Job Has Finished
16.49.6.Cancelling a Print Job
16.49.7.Getting the Default Value of a Print Job Capability
16.49.8.Getting the Possible Values for a Print Job Capability
16.49.9.Setting the Orientation of a Print Job -- Portrait or Landscape
16.49.10.demonstrate the Java 1.4 printing API
16.49.11.Setting the Number of Copies of a Print Job
16.49.12.Displaying the Page Format Dialog: changes the default page format such as orientation and paper size.
16.49.13.Print Dialog: change the default printer settings(default printer, number of copies, range of pages)
16.49.14.Setting the Orientation of a Printed Page