Java example source code file (PSStreamPrintJob.java)
The PSStreamPrintJob.java Java example source code
/*
* Copyright (c) 2000, 2005, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code 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
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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*/
package sun.print;
import java.net.URL;
import java.io.InputStream;
import java.io.IOException;
import java.io.Reader;
import java.util.Vector;
import javax.print.CancelablePrintJob;
import javax.print.Doc;
import javax.print.DocFlavor;
import javax.print.DocPrintJob;
import javax.print.PrintService;
import javax.print.PrintException;
import javax.print.event.PrintJobEvent;
import javax.print.event.PrintJobListener;
import javax.print.event.PrintJobAttributeListener;
import javax.print.attribute.Attribute;
import javax.print.attribute.AttributeSet;
import javax.print.attribute.AttributeSetUtilities;
import javax.print.attribute.DocAttributeSet;
import javax.print.attribute.HashPrintJobAttributeSet;
import javax.print.attribute.HashPrintRequestAttributeSet;
import javax.print.attribute.PrintJobAttribute;
import javax.print.attribute.PrintJobAttributeSet;
import javax.print.attribute.PrintRequestAttribute;
import javax.print.attribute.PrintRequestAttributeSet;
import javax.print.attribute.standard.Copies;
import javax.print.attribute.standard.DocumentName;
import javax.print.attribute.standard.Fidelity;
import javax.print.attribute.standard.JobName;
import javax.print.attribute.standard.JobOriginatingUserName;
import javax.print.attribute.standard.Media;
import javax.print.attribute.standard.MediaSize;
import javax.print.attribute.standard.MediaSizeName;
import javax.print.attribute.standard.OrientationRequested;
import javax.print.attribute.standard.RequestingUserName;
import java.awt.print.*;
public class PSStreamPrintJob implements CancelablePrintJob {
transient private Vector jobListeners;
transient private Vector attrListeners;
transient private Vector listenedAttributeSets;
private PSStreamPrintService service;
private boolean fidelity;
private boolean printing = false;
private boolean printReturned = false;
private PrintRequestAttributeSet reqAttrSet = null;
private PrintJobAttributeSet jobAttrSet = null;
private PrinterJob job;
private Doc doc;
/* these variables used globally to store reference to the print
* data retrieved as a stream. On completion these are always closed
* if non-null.
*/
private InputStream instream = null;
private Reader reader = null;
/* default values overridden by those extracted from the attributes */
private String jobName = "Java Printing";
private int copies = 1;
private MediaSize mediaSize = MediaSize.NA.LETTER;
private OrientationRequested orient = OrientationRequested.PORTRAIT;
PSStreamPrintJob(PSStreamPrintService service) {
this.service = service;
}
public PrintService getPrintService() {
return service;
}
public PrintJobAttributeSet getAttributes() {
synchronized (this) {
if (jobAttrSet == null) {
/* just return an empty set until the job is submitted */
PrintJobAttributeSet jobSet = new HashPrintJobAttributeSet();
return AttributeSetUtilities.unmodifiableView(jobSet);
} else {
return jobAttrSet;
}
}
}
public void addPrintJobListener(PrintJobListener listener) {
synchronized (this) {
if (listener == null) {
return;
}
if (jobListeners == null) {
jobListeners = new Vector();
}
jobListeners.add(listener);
}
}
public void removePrintJobListener(PrintJobListener listener) {
synchronized (this) {
if (listener == null || jobListeners == null ) {
return;
}
jobListeners.remove(listener);
if (jobListeners.isEmpty()) {
jobListeners = null;
}
}
}
/* Closes any stream already retrieved for the data.
* We want to avoid unnecessarily asking the Doc to create a stream only
* to get a reference in order to close it because the job failed.
* If the representation class is itself a "stream", this
* closes that stream too.
*/
private void closeDataStreams() {
if (doc == null) {
return;
}
Object data = null;
try {
data = doc.getPrintData();
} catch (IOException e) {
return;
}
if (instream != null) {
try {
instream.close();
} catch (IOException e) {
} finally {
instream = null;
}
}
else if (reader != null) {
try {
reader.close();
} catch (IOException e) {
} finally {
reader = null;
}
}
else if (data instanceof InputStream) {
try {
((InputStream)data).close();
} catch (IOException e) {
}
}
else if (data instanceof Reader) {
try {
((Reader)data).close();
} catch (IOException e) {
}
}
}
private void notifyEvent(int reason) {
synchronized (this) {
if (jobListeners != null) {
PrintJobListener listener;
PrintJobEvent event = new PrintJobEvent(this, reason);
for (int i = 0; i < jobListeners.size(); i++) {
listener = (PrintJobListener)(jobListeners.elementAt(i));
switch (reason) {
case PrintJobEvent.JOB_CANCELED :
listener.printJobCanceled(event);
break;
case PrintJobEvent.JOB_FAILED :
listener.printJobFailed(event);
break;
case PrintJobEvent.DATA_TRANSFER_COMPLETE :
listener.printDataTransferCompleted(event);
break;
case PrintJobEvent.NO_MORE_EVENTS :
listener.printJobNoMoreEvents(event);
break;
case PrintJobEvent.JOB_COMPLETE :
listener.printJobCompleted(event);
break;
default:
break;
}
}
}
}
}
public void addPrintJobAttributeListener(
PrintJobAttributeListener listener,
PrintJobAttributeSet attributes) {
synchronized (this) {
if (listener == null) {
return;
}
if (attrListeners == null) {
attrListeners = new Vector();
listenedAttributeSets = new Vector();
}
attrListeners.add(listener);
if (attributes == null) {
attributes = new HashPrintJobAttributeSet();
}
listenedAttributeSets.add(attributes);
}
}
public void removePrintJobAttributeListener(
PrintJobAttributeListener listener) {
synchronized (this) {
if (listener == null || attrListeners == null ) {
return;
}
int index = attrListeners.indexOf(listener);
if (index == -1) {
return;
} else {
attrListeners.remove(index);
listenedAttributeSets.remove(index);
if (attrListeners.isEmpty()) {
attrListeners = null;
listenedAttributeSets = null;
}
}
}
}
public void print(Doc doc, PrintRequestAttributeSet attributes)
throws PrintException {
synchronized (this) {
if (printing) {
throw new PrintException("already printing");
} else {
printing = true;
}
}
this.doc = doc;
/* check if the parameters are valid before doing much processing */
DocFlavor flavor = doc.getDocFlavor();
Object data;
try {
data = doc.getPrintData();
} catch (IOException e) {
notifyEvent(PrintJobEvent.JOB_FAILED);
throw new PrintException("can't get print data: " + e.toString());
}
if (flavor == null || (!service.isDocFlavorSupported(flavor))) {
notifyEvent(PrintJobEvent.JOB_FAILED);
throw new PrintJobFlavorException("invalid flavor", flavor);
}
initializeAttributeSets(doc, attributes);
getAttributeValues(flavor);
String repClassName = flavor.getRepresentationClassName();
if (flavor.equals(DocFlavor.INPUT_STREAM.GIF) ||
flavor.equals(DocFlavor.INPUT_STREAM.JPEG) ||
flavor.equals(DocFlavor.INPUT_STREAM.PNG) ||
flavor.equals(DocFlavor.BYTE_ARRAY.GIF) ||
flavor.equals(DocFlavor.BYTE_ARRAY.JPEG) ||
flavor.equals(DocFlavor.BYTE_ARRAY.PNG)) {
try {
instream = doc.getStreamForBytes();
printableJob(new ImagePrinter(instream), reqAttrSet);
return;
} catch (ClassCastException cce) {
notifyEvent(PrintJobEvent.JOB_FAILED);
throw new PrintException(cce);
} catch (IOException ioe) {
notifyEvent(PrintJobEvent.JOB_FAILED);
throw new PrintException(ioe);
}
} else if (flavor.equals(DocFlavor.URL.GIF) ||
flavor.equals(DocFlavor.URL.JPEG) ||
flavor.equals(DocFlavor.URL.PNG)) {
try {
printableJob(new ImagePrinter((URL)data), reqAttrSet);
return;
} catch (ClassCastException cce) {
notifyEvent(PrintJobEvent.JOB_FAILED);
throw new PrintException(cce);
}
} else if (repClassName.equals("java.awt.print.Pageable")) {
try {
pageableJob((Pageable)doc.getPrintData(), reqAttrSet);
return;
} catch (ClassCastException cce) {
notifyEvent(PrintJobEvent.JOB_FAILED);
throw new PrintException(cce);
} catch (IOException ioe) {
notifyEvent(PrintJobEvent.JOB_FAILED);
throw new PrintException(ioe);
}
} else if (repClassName.equals("java.awt.print.Printable")) {
try {
printableJob((Printable)doc.getPrintData(), reqAttrSet);
return;
} catch (ClassCastException cce) {
notifyEvent(PrintJobEvent.JOB_FAILED);
throw new PrintException(cce);
} catch (IOException ioe) {
notifyEvent(PrintJobEvent.JOB_FAILED);
throw new PrintException(ioe);
}
} else {
notifyEvent(PrintJobEvent.JOB_FAILED);
throw new PrintException("unrecognized class: "+repClassName);
}
}
public void printableJob(Printable printable,
PrintRequestAttributeSet attributes)
throws PrintException {
try {
synchronized(this) {
if (job != null) { // shouldn't happen
throw new PrintException("already printing");
} else {
job = new PSPrinterJob();
}
}
job.setPrintService(getPrintService());
PageFormat pf = new PageFormat();
if (mediaSize != null) {
Paper p = new Paper();
p.setSize(mediaSize.getX(MediaSize.INCH)*72.0,
mediaSize.getY(MediaSize.INCH)*72.0);
p.setImageableArea(72.0, 72.0, p.getWidth()-144.0,
p.getHeight()-144.0);
pf.setPaper(p);
}
if (orient == OrientationRequested.REVERSE_LANDSCAPE) {
pf.setOrientation(PageFormat.REVERSE_LANDSCAPE);
} else if (orient == OrientationRequested.LANDSCAPE) {
pf.setOrientation(PageFormat.LANDSCAPE);
}
job.setPrintable(printable, pf);
job.print(attributes);
notifyEvent(PrintJobEvent.JOB_COMPLETE);
return;
} catch (PrinterException pe) {
notifyEvent(PrintJobEvent.JOB_FAILED);
throw new PrintException(pe);
} finally {
printReturned = true;
}
}
public void pageableJob(Pageable pageable,
PrintRequestAttributeSet attributes)
throws PrintException {
try {
synchronized(this) {
if (job != null) { // shouldn't happen
throw new PrintException("already printing");
} else {
job = new PSPrinterJob();
}
}
job.setPrintService(getPrintService());
job.setPageable(pageable);
job.print(attributes);
notifyEvent(PrintJobEvent.JOB_COMPLETE);
return;
} catch (PrinterException pe) {
notifyEvent(PrintJobEvent.JOB_FAILED);
throw new PrintException(pe);
} finally {
printReturned = true;
}
}
/* There's some inefficiency here as the job set is created even though
* it may never be requested.
*/
private synchronized void
initializeAttributeSets(Doc doc, PrintRequestAttributeSet reqSet) {
reqAttrSet = new HashPrintRequestAttributeSet();
jobAttrSet = new HashPrintJobAttributeSet();
Attribute[] attrs;
if (reqSet != null) {
reqAttrSet.addAll(reqSet);
attrs = reqSet.toArray();
for (int i=0; i<attrs.length; i++) {
if (attrs[i] instanceof PrintJobAttribute) {
jobAttrSet.add(attrs[i]);
}
}
}
DocAttributeSet docSet = doc.getAttributes();
if (docSet != null) {
attrs = docSet.toArray();
for (int i=0; i<attrs.length; i++) {
if (attrs[i] instanceof PrintRequestAttribute) {
reqAttrSet.add(attrs[i]);
}
if (attrs[i] instanceof PrintJobAttribute) {
jobAttrSet.add(attrs[i]);
}
}
}
/* add the user name to the job */
String userName = "";
try {
userName = System.getProperty("user.name");
} catch (SecurityException se) {
}
if (userName == null || userName.equals("")) {
RequestingUserName ruName =
(RequestingUserName)reqSet.get(RequestingUserName.class);
if (ruName != null) {
jobAttrSet.add(
new JobOriginatingUserName(ruName.getValue(),
ruName.getLocale()));
} else {
jobAttrSet.add(new JobOriginatingUserName("", null));
}
} else {
jobAttrSet.add(new JobOriginatingUserName(userName, null));
}
/* if no job name supplied use doc name (if supplied), if none and
* its a URL use that, else finally anything .. */
if (jobAttrSet.get(JobName.class) == null) {
JobName jobName;
if (docSet != null && docSet.get(DocumentName.class) != null) {
DocumentName docName =
(DocumentName)docSet.get(DocumentName.class);
jobName = new JobName(docName.getValue(), docName.getLocale());
jobAttrSet.add(jobName);
} else {
String str = "JPS Job:" + doc;
try {
Object printData = doc.getPrintData();
if (printData instanceof URL) {
str = ((URL)(doc.getPrintData())).toString();
}
} catch (IOException e) {
}
jobName = new JobName(str, null);
jobAttrSet.add(jobName);
}
}
jobAttrSet = AttributeSetUtilities.unmodifiableView(jobAttrSet);
}
private void getAttributeValues(DocFlavor flavor) throws PrintException {
Attribute attr;
Class category;
if (reqAttrSet.get(Fidelity.class) == Fidelity.FIDELITY_TRUE) {
fidelity = true;
} else {
fidelity = false;
}
Attribute []attrs = reqAttrSet.toArray();
for (int i=0; i<attrs.length; i++) {
attr = attrs[i];
category = attr.getCategory();
if (fidelity == true) {
if (!service.isAttributeCategorySupported(category)) {
notifyEvent(PrintJobEvent.JOB_FAILED);
throw new PrintJobAttributeException(
"unsupported category: " + category, category, null);
} else if
(!service.isAttributeValueSupported(attr, flavor, null)) {
notifyEvent(PrintJobEvent.JOB_FAILED);
throw new PrintJobAttributeException(
"unsupported attribute: " + attr, null, attr);
}
}
if (category == JobName.class) {
jobName = ((JobName)attr).getValue();
} else if (category == Copies.class) {
copies = ((Copies)attr).getValue();
} else if (category == Media.class) {
if (attr instanceof MediaSizeName &&
service.isAttributeValueSupported(attr, null, null)) {
mediaSize =
MediaSize.getMediaSizeForName((MediaSizeName)attr);
}
} else if (category == OrientationRequested.class) {
orient = (OrientationRequested)attr;
}
}
}
/* Cancel PrinterJob jobs that haven't yet completed. */
public void cancel() throws PrintException {
synchronized (this) {
if (!printing) {
throw new PrintException("Job is not yet submitted.");
} else if (job != null && !printReturned) {
job.cancel();
notifyEvent(PrintJobEvent.JOB_CANCELED);
return;
} else {
throw new PrintException("Job could not be cancelled.");
}
}
}
}
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