Spec-Zone .ru
спецификации, руководства, описания, API
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/* * Copyright (c) 2001, Oracle and/or its affiliates. All rights reserved. * * This software is the proprietary information of Oracle. * Use is subject to license terms. * */ import java.io.*; import javax.print.*; import javax.print.attribute.*; import javax.print.attribute.standard.*; /* * Use the Java(TM) Print Service API to locate a print service which * can print a GIF-encoded image. A GIF image is printed according to * a job template specified as a set of printing attributes. */ public class PrintGIF { public static void main(String args[]) { /* Use the pre-defined flavor for a GIF from an InputStream */ DocFlavor flavor = DocFlavor.INPUT_STREAM.GIF; /* Create a set which specifies how the job is to be printed */ PrintRequestAttributeSet aset = new HashPrintRequestAttributeSet(); aset.add(MediaSizeName.NA_LETTER); aset.add(new Copies(1)); /* Locate print services which can print a GIF in the manner specified */ PrintService[] pservices = PrintServiceLookup.lookupPrintServices(flavor, aset); if (pservices.length > 0) { /* Create a Print Job */ DocPrintJob printJob = pservices[0].createPrintJob(); /* Create a Doc implementation to pass the print data */ Doc doc = new InputStreamDoc("java2dlogo.gif", flavor); /* Print the doc as specified */ try { printJob.print(doc, aset); } catch (PrintException e) { System.err.println(e); } } else { System.err.println("No suitable printers"); } } } class InputStreamDoc implements Doc { private String filename; private DocFlavor docFlavor; private InputStream stream; public InputStreamDoc(String name, DocFlavor flavor) { filename = name; docFlavor = flavor; } public DocFlavor getDocFlavor() { return docFlavor; } /* No attributes attached to this Doc - mainly useful for MultiDoc */ public DocAttributeSet getAttributes() { return null; } /* Since the data is to be supplied as an InputStream delegate to * getStreamForBytes(). */ public Object getPrintData() throws IOException { return getStreamForBytes(); } /* Not possible to return a GIF as text */ public Reader getReaderForText() throws UnsupportedEncodingException, IOException { return null; } /* Return the print data as an InputStream. * Always return the same instance. */ public InputStream getStreamForBytes() throws IOException { synchronized(this) { if (stream == null) { stream = new FileInputStream(filename); } return stream; } } }