Java Print Service API User Guide: - Example: Print2DtoStream.java - JDK 5 Documentation v1.4.1, Java 2 SDK 英文文档

Java^TM Print Service API User Guide
APPENDIX E

Example: Print2DtoStream.java

/*
 * Copyright 2001 Sun Microsystems, Inc. All Rights Reserved.
 *
 * This software is the proprietary information of Sun Microsystems, Inc.
 * Use is subject to license terms.
 *
 */

import java.io.*;
import java.awt.*;
import java.awt.print.*;
import javax.print.*;
import javax.print.attribute.*;
import javax.print.attribute.standard.*;

/*
 * Use the Java(TM) Print Service API to locate a service which can export
 * 2D graphics to a stream as Postscript. This may be spooled to a
 * Postscript printer, or used in a postscript viewer.
 */
public class Print2DtoStream implements Printable{

	public Print2DtoStream() {
 
		/* Use the pre-defined flavor for a Printable from an InputStream */
		DocFlavor flavor = DocFlavor.SERVICE_FORMATTED.PRINTABLE;

 		/* Specify the type of the output stream */
		String psMimeType = DocFlavor.BYTE_ARRAY.POSTSCRIPT.getMimeType();

		/* Locate factory which can export a GIF image stream as Postscript */
		StreamPrintServiceFactory[] factories =
		StreamPrintServiceFactory.lookupStreamPrintServiceFactories(
					flavor, psMimeType);
		if (factories.length == 0) {
			System.err.println("No suitable factories");
			System.exit(0);
		}

		try {
			/* Create a file for the exported postscript */
			FileOutputStream fos = new FileOutputStream("out.ps");

			/* Create a Stream printer for Postscript */
			StreamPrintService sps = factories[0].getPrintService(fos);

			/* Create and call a Print Job */
			DocPrintJob pj = sps.createPrintJob();
			PrintRequestAttributeSet aset = new HashPrintRequestAttributeSet();

			Doc doc = new SimpleDoc(this, flavor, null);

			pj.print(doc, aset);
			fos.close();

		} catch (PrintException pe) { 
			System.err.println(pe);
		} catch (IOException ie) { 
			System.err.println(ie);
		}
	}
	
	public int print(Graphics g,PageFormat pf,int pageIndex) {

		if (pageIndex == 0) {
			Graphics2D g2d= (Graphics2D)g;
			g2d.translate(pf.getImageableX(), pf.getImageableY()); 
			g2d.setColor(Color.black);
			g2d.drawString("example string", 250, 250);
			g2d.fillRect(0, 0, 200, 200);
			return Printable.PAGE_EXISTS;			
		} else {
			return Printable.NO_SUCH_PAGE;
		}
	}

	public static void main(String args[]) {
   		Print2DtoStream sp = new Print2DtoStream();
	}
}
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