How to print 2D graphics : Print Job « 2D Graphics GUI « Java

1. Java
2. 2D Graphics GUI
3. Print Job

How to print 2D graphics

 

/*
   This program is a part of the companion code for Core Java 8th ed.
   (http://horstmann.com/corejava)

   This program is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation, either version 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

import java.awt.BorderLayout;
import java.awt.EventQueue;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Shape;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.font.FontRenderContext;
import java.awt.font.TextLayout;
import java.awt.geom.AffineTransform;
import java.awt.geom.GeneralPath;
import java.awt.geom.Line2D;
import java.awt.geom.Point2D;
import java.awt.geom.Rectangle2D;
import java.awt.print.PageFormat;
import java.awt.print.Printable;
import java.awt.print.PrinterException;
import java.awt.print.PrinterJob;

import javax.print.attribute.HashPrintRequestAttributeSet;
import javax.print.attribute.PrintRequestAttributeSet;
import javax.swing.JButton;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JPanel;

/**
 * This program demonstrates how to print 2D graphics
 * @version 1.12 2007-08-16
 * @author Cay Horstmann
 */
public class PrintTest
{
   public static void main(String[] args)
   {
      EventQueue.invokeLater(new Runnable()
         {
            public void run()
            {
               JFrame frame = new PrintTestFrame();
               frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
               frame.setVisible(true);
            }
         });
   }
}

/**
 * This frame shows a panel with 2D graphics and buttons to print the graphics and to set up the
 * page format.
 */
class PrintTestFrame extends JFrame
{
   public PrintTestFrame()
   {
      setTitle("PrintTest");
      setSize(DEFAULT_WIDTH, DEFAULT_HEIGHT);

      canvas = new PrintComponent();
      add(canvas, BorderLayout.CENTER);

      attributes = new HashPrintRequestAttributeSet();

      JPanel buttonPanel = new JPanel();
      JButton printButton = new JButton("Print");
      buttonPanel.add(printButton);
      printButton.addActionListener(new ActionListener()
         {
            public void actionPerformed(ActionEvent event)
            {
               try
               {
                  PrinterJob job = PrinterJob.getPrinterJob();
                  job.setPrintable(canvas);
                  if (job.printDialog(attributes)) job.print(attributes);
               }
               catch (PrinterException e)
               {
                  JOptionPane.showMessageDialog(PrintTestFrame.this, e);
               }
            }
         });

      JButton pageSetupButton = new JButton("Page setup");
      buttonPanel.add(pageSetupButton);
      pageSetupButton.addActionListener(new ActionListener()
         {
            public void actionPerformed(ActionEvent event)
            {
               PrinterJob job = PrinterJob.getPrinterJob();
               job.pageDialog(attributes);
            }
         });

      add(buttonPanel, BorderLayout.NORTH);
   }

   private PrintComponent canvas;
   private PrintRequestAttributeSet attributes;

   private static final int DEFAULT_WIDTH = 300;
   private static final int DEFAULT_HEIGHT = 300;
}

/**
 * This component generates a 2D graphics image for screen display and printing.
 */
class PrintComponent extends JComponent implements Printable
{
   public void paintComponent(Graphics g)
   {
      Graphics2D g2 = (Graphics2D) g;
      drawPage(g2);
   }

   public int print(Graphics g, PageFormat pf, int page) throws PrinterException
   {
      if (page >= 1) return Printable.NO_SUCH_PAGE;
      Graphics2D g2 = (Graphics2D) g;
      g2.translate(pf.getImageableX(), pf.getImageableY());
      g2.draw(new Rectangle2D.Double(0, 0, pf.getImageableWidth(), pf.getImageableHeight()));

      drawPage(g2);
      return Printable.PAGE_EXISTS;
   }

   /**
    * This method draws the page both on the screen and the printer graphics context.
    * @param g2 the graphics context
    */
   public void drawPage(Graphics2D g2)
   {
      FontRenderContext context = g2.getFontRenderContext();
      Font f = new Font("Serif", Font.PLAIN, 72);
      GeneralPath clipShape = new GeneralPath();

      TextLayout layout = new TextLayout("Hello", f, context);
      AffineTransform transform = AffineTransform.getTranslateInstance(0, 72);
      Shape outline = layout.getOutline(transform);
      clipShape.append(outline, false);

      layout = new TextLayout("World", f, context);
      transform = AffineTransform.getTranslateInstance(0, 144);
      outline = layout.getOutline(transform);
      clipShape.append(outline, false);

      g2.draw(clipShape);
      g2.clip(clipShape);

      final int NLINES = 50;
      Point2D p = new Point2D.Double(0, 0);
      for (int i = 0; i < NLINES; i++)
      {
         double x = (2 * getWidth() * i) / NLINES;
         double y = (2 * getHeight() * (NLINES - 1 - i)) / NLINES;
         Point2D q = new Point2D.Double(x, y);
         g2.draw(new Line2D.Double(p, q));
      }
   }
}

   
  

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