package com.genedavissoftware.printing;

import java.awt.*;
import java.awt.print.*;
import javax.swing.*;


/**
 * HelloPrint
 * Copyright 2005 Gene Davis Software, support@genedavissoftware.com
 *
 * This code is free software; you can use it, redistribute it and/or
 * modify it under the terms of version 2 of the Apache License
 * found here:
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 *
 * 
 * Very basic "Hello World" for printing in Java. This code
 * is from:
 * 
 * http://www.genedavis.com/library/java_printing/
 * 
 * Some information used to create this library are based off 
 * information found here:
 * 
 * http://www.developerdotstar.com/community/node/124
 * 
 * 
 */
public class HelloPrint extends JPanel implements Printable {

	public static void main(String[] args) {
        final JFrame jf = new JFrame("Hello Frame");
    	
        final HelloPrint gds = new HelloPrint();
        gds.setPreferredSize(new Dimension(200,200));
        gds.setMinimumSize(new Dimension(200,200));
        
        jf.getContentPane().add(gds);
        
        jf.setSize(400,400);
        
        //invokeLater() is used as a workaround for a java
        //gui bug.
        SwingUtilities.invokeLater(new Runnable() {
        		public void run() {
        			try {
           			jf.setVisible(true);
           			
           			//get a PrintJob
      				PrinterJob pjob = PrinterJob.getPrinterJob();
        				//set a HelloPrint as the target to print
      				pjob.setPrintable(gds, pjob.defaultPage());
      				//get the print dialog, continue if canel
      				//is not clicked
        				if (pjob.printDialog()) {
        					//print the target (HelloPrint)
        					pjob.print();
        				}
        			} catch (Exception e) {
    	        			e.printStackTrace();
        			}
        		}
        });
	        		
	        
    }
	
	/**
	 * We happen to implement a paint method, but this could be
	 * ignored for components that already to something interesting
	 * on their own.
	 */
	public void paint(Graphics g) {
        super.paint(g);
        g.drawString("Hello world!", 35, 100);
	}

	
	/**
	 * Printable's implementation
	 */
	public int print(Graphics g, PageFormat pf, int pageIndex) {
		//assume the page exists until proven otherwise
		int retval = Printable.PAGE_EXISTS;
		
		//We only want to deal with the first page.
		//The first page is numbered '0'
		if (pageIndex > 0){
			retval = Printable.NO_SUCH_PAGE;
		} else {
			//setting up the Graphics object for printing
			g.translate((int)(pf.getImageableX()), (int)(pf.getImageableY()));
	    		//populate the Graphics object from HelloPrint's paint() method
			paint(g);
		}
		
	    return retval;
    }
}