Java example source code file (PSStreamPrintService.java)

This example Java source code file (PSStreamPrintService.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

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Java - Java tags/keywords

attribute, attributeset, chromaticity, class, docflavor, illegalargumentexception, maxcopies, mediaprintablearea, mediasizename, nullpointerexception, pageranges, print, printing, psstreamprintservice, sheetcollate, string, util

The PSStreamPrintService.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
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

package sun.print;

import java.io.OutputStream;
import java.util.Iterator;
import java.util.Locale;

import javax.print.DocFlavor;
import javax.print.DocPrintJob;
import javax.print.StreamPrintService;
import javax.print.StreamPrintServiceFactory;
import javax.print.ServiceUIFactory;
import javax.print.attribute.Attribute;
import javax.print.attribute.AttributeSet;
import javax.print.attribute.AttributeSetUtilities;
import javax.print.attribute.HashAttributeSet;
import javax.print.attribute.HashPrintServiceAttributeSet;
import javax.print.attribute.PrintServiceAttribute;
import javax.print.attribute.PrintServiceAttributeSet;
import javax.print.attribute.Size2DSyntax;
import javax.print.event.PrintServiceAttributeListener;
import javax.print.attribute.standard.JobName;
import javax.print.attribute.standard.RequestingUserName;
import javax.print.attribute.standard.Chromaticity;
import javax.print.attribute.standard.ColorSupported;
import javax.print.attribute.standard.Copies;
import javax.print.attribute.standard.CopiesSupported;
import javax.print.attribute.standard.Fidelity;
import javax.print.attribute.standard.Media;
import javax.print.attribute.standard.MediaPrintableArea;
import javax.print.attribute.standard.MediaSize;
import javax.print.attribute.standard.MediaSizeName;
import javax.print.attribute.standard.OrientationRequested;
import javax.print.attribute.standard.PageRanges;
import javax.print.attribute.standard.SheetCollate;
import javax.print.attribute.standard.Sides;

public class PSStreamPrintService extends StreamPrintService
    implements SunPrinterJobService {

    private static final Class[] suppAttrCats = {
        Chromaticity.class,
        Copies.class,
        Fidelity.class,
        JobName.class,
        Media.class,
        MediaPrintableArea.class,
        OrientationRequested.class,
        PageRanges.class,
        RequestingUserName.class,
        SheetCollate.class,
        Sides.class,
    };

    private static int MAXCOPIES = 1000;

    private static final MediaSizeName mediaSizes[] = {
        MediaSizeName.NA_LETTER,
        MediaSizeName.TABLOID,
        MediaSizeName.LEDGER,
        MediaSizeName.NA_LEGAL,
        MediaSizeName.EXECUTIVE,
        MediaSizeName.ISO_A3,
        MediaSizeName.ISO_A4,
        MediaSizeName.ISO_A5,
        MediaSizeName.ISO_B4,
        MediaSizeName.ISO_B5,
    };

    public PSStreamPrintService(OutputStream out) {
        super(out);
    }

    public String getOutputFormat() {
        return PSStreamPrinterFactory.psMimeType;
    }


    public DocFlavor[] getSupportedDocFlavors() {
        return PSStreamPrinterFactory.getFlavors();
    }

    public DocPrintJob createPrintJob() {
        return new PSStreamPrintJob(this);
    }

    public boolean usesClass(Class c) {
        return (c == sun.print.PSPrinterJob.class);
    }

    public String getName() {
        return "Postscript output";
    }

    public void addPrintServiceAttributeListener(
                         PrintServiceAttributeListener listener) {
        return;
    }

    public void removePrintServiceAttributeListener(
                            PrintServiceAttributeListener listener) {
        return;
    }


    public <T extends PrintServiceAttribute>
        T getAttribute(Class<T> category)
    {
        if (category == null) {
            throw new NullPointerException("category");
        }
        if (!(PrintServiceAttribute.class.isAssignableFrom(category))) {
            throw new IllegalArgumentException("Not a PrintServiceAttribute");
        }
        if (category == ColorSupported.class) {
            return (T)ColorSupported.SUPPORTED;
        } else {
            return null;
        }
    }
    public PrintServiceAttributeSet getAttributes() {
        PrintServiceAttributeSet attrs = new HashPrintServiceAttributeSet();
        attrs.add(ColorSupported.SUPPORTED);

        return AttributeSetUtilities.unmodifiableView(attrs);
    }

    public boolean isDocFlavorSupported(DocFlavor flavor) {
        DocFlavor [] flavors = getSupportedDocFlavors();
        for (int f=0; f<flavors.length; f++) {
            if (flavor.equals(flavors[f])) {
                return true;
            }
        }
        return false;
    }


    public Class<?>[] getSupportedAttributeCategories() {
        Class []cats = new Class[suppAttrCats.length];
        System.arraycopy(suppAttrCats, 0, cats, 0, cats.length);
        return cats;
    }

    public boolean
        isAttributeCategorySupported(Class<? extends Attribute> category)
    {
        if (category == null) {
            throw new NullPointerException("null category");
        }
        if (!(Attribute.class.isAssignableFrom(category))) {
            throw new IllegalArgumentException(category +
                                             " is not an Attribute");
        }

        for (int i=0;i<suppAttrCats.length;i++) {
            if (category == suppAttrCats[i]) {
                return true;
            }
        }
        return false;
    }


    public Object
        getDefaultAttributeValue(Class<? extends Attribute> category)
    {
        if (category == null) {
            throw new NullPointerException("null category");
        }
        if (!Attribute.class.isAssignableFrom(category)) {
            throw new IllegalArgumentException(category +
                                             " is not an Attribute");
        }

        if (!isAttributeCategorySupported(category)) {
            return null;
        }

        if (category == Copies.class) {
            return new Copies(1);
        } else if (category == Chromaticity.class) {
            return Chromaticity.COLOR;
        } else if (category == Fidelity.class) {
            return Fidelity.FIDELITY_FALSE;
        } else if (category == Media.class) {
            String defaultCountry = Locale.getDefault().getCountry();
            if (defaultCountry != null &&
                (defaultCountry.equals("") ||
                 defaultCountry.equals(Locale.US.getCountry()) ||
                 defaultCountry.equals(Locale.CANADA.getCountry()))) {
                return MediaSizeName.NA_LETTER;
            } else {
                 return MediaSizeName.ISO_A4;
            }
        } else if (category == MediaPrintableArea.class) {
            String defaultCountry = Locale.getDefault().getCountry();
            float iw, ih;
            float margin = 0.5f; // both these papers > 5" in all dimensions
            if (defaultCountry != null &&
                (defaultCountry.equals("") ||
                 defaultCountry.equals(Locale.US.getCountry()) ||
                 defaultCountry.equals(Locale.CANADA.getCountry()))) {
                iw = MediaSize.NA.LETTER.getX(Size2DSyntax.INCH) - 2*margin;
                ih = MediaSize.NA.LETTER.getY(Size2DSyntax.INCH) - 2*margin;
            } else {
                iw = MediaSize.ISO.A4.getX(Size2DSyntax.INCH) - 2*margin;
                ih = MediaSize.ISO.A4.getY(Size2DSyntax.INCH) - 2*margin;
            }
            return new MediaPrintableArea(margin, margin, iw, ih,
                                          MediaPrintableArea.INCH);
        } else if (category == OrientationRequested.class) {
            return OrientationRequested.PORTRAIT;
        } else if (category == PageRanges.class) {
            return new PageRanges(1, Integer.MAX_VALUE);
        } else if (category == SheetCollate.class) {
            return SheetCollate.UNCOLLATED;
        } else if (category == Sides.class) {
            return Sides.ONE_SIDED;

        } else
            return null;
    }


    public Object
        getSupportedAttributeValues(Class<? extends Attribute> category,
                                    DocFlavor flavor,
                                    AttributeSet attributes)
    {

        if (category == null) {
            throw new NullPointerException("null category");
        }
        if (!Attribute.class.isAssignableFrom(category)) {
            throw new IllegalArgumentException(category +
                                             " does not implement Attribute");
        }
        if (flavor != null && !isDocFlavorSupported(flavor)) {
            throw new IllegalArgumentException(flavor +
                                               " is an unsupported flavor");
        }

        if (!isAttributeCategorySupported(category)) {
            return null;
        }

        if (category == Chromaticity.class) {
            Chromaticity[]arr = new Chromaticity[1];
            arr[0] = Chromaticity.COLOR;
            //arr[1] = Chromaticity.MONOCHROME;
            return (arr);
        } else if (category == JobName.class) {
            return new JobName("", null);
        } else if (category == RequestingUserName.class) {
            return new RequestingUserName("", null);
        } else if (category == OrientationRequested.class) {
            if (flavor == null ||
                flavor.equals(DocFlavor.SERVICE_FORMATTED.PAGEABLE) ||
                flavor.equals(DocFlavor.SERVICE_FORMATTED.PRINTABLE)) {
                OrientationRequested []arr = new OrientationRequested[3];
                arr[0] = OrientationRequested.PORTRAIT;
                arr[1] = OrientationRequested.LANDSCAPE;
                arr[2] = OrientationRequested.REVERSE_LANDSCAPE;
                return arr;
            } else {
                return null;
            }
        } else if ((category == Copies.class) ||
                   (category == CopiesSupported.class)) {
            return new CopiesSupported(1, MAXCOPIES);
        } else if (category == Media.class) {
            Media []arr = new Media[mediaSizes.length];
            System.arraycopy(mediaSizes, 0, arr, 0, mediaSizes.length);
            return arr;
        } else if (category == Fidelity.class) {
            Fidelity []arr = new Fidelity[2];
            arr[0] = Fidelity.FIDELITY_FALSE;
            arr[1] = Fidelity.FIDELITY_TRUE;
            return arr;
        } else if (category == MediaPrintableArea.class) {
            if (attributes == null) {
                return null;
            }
            MediaSize mediaSize = (MediaSize)attributes.get(MediaSize.class);
            if (mediaSize == null) {
                Media media = (Media)attributes.get(Media.class);
                if (media != null && media instanceof MediaSizeName) {
                    MediaSizeName msn = (MediaSizeName)media;
                    mediaSize = MediaSize.getMediaSizeForName(msn);
                }
            }
            if (mediaSize == null) {
                return null;
            } else {
                MediaPrintableArea []arr = new MediaPrintableArea[1];
                float w = mediaSize.getX(MediaSize.INCH);
                float h = mediaSize.getY(MediaSize.INCH);
                /* For dimensions >= 5 inches use 0.5 inch margins.
                 * For smaller dimensions, use 10% margins.
                 */
                float xmargin = 0.5f;
                float ymargin = 0.5f;
                if (w < 5f) {
                    xmargin = w/10;
                }
                if (h < 5f) {
                    ymargin = h/10;
                }
                arr[0] = new MediaPrintableArea(xmargin, ymargin,
                                                w - 2*xmargin,
                                                h - 2*ymargin,
                                                MediaSize.INCH);
                return arr;
            }
        } else if (category == PageRanges.class) {
            if (flavor == null ||
                flavor.equals(DocFlavor.SERVICE_FORMATTED.PAGEABLE) ||
                flavor.equals(DocFlavor.SERVICE_FORMATTED.PRINTABLE)) {
                PageRanges []arr = new PageRanges[1];
                arr[0] = new PageRanges(1, Integer.MAX_VALUE);
                return arr;
            } else {
                return null;
            }
        } else if (category == SheetCollate.class) {
            if (flavor == null ||
                flavor.equals(DocFlavor.SERVICE_FORMATTED.PAGEABLE) ||
                flavor.equals(DocFlavor.SERVICE_FORMATTED.PRINTABLE)) {
                SheetCollate []arr = new SheetCollate[2];
                arr[0] = SheetCollate.UNCOLLATED;
                arr[1] = SheetCollate.COLLATED;
                return arr;
            } else {
                SheetCollate []arr = new SheetCollate[1];
                arr[0] = SheetCollate.UNCOLLATED;
                return arr;
            }
        } else if (category == Sides.class) {
            if (flavor == null ||
                flavor.equals(DocFlavor.SERVICE_FORMATTED.PAGEABLE) ||
                flavor.equals(DocFlavor.SERVICE_FORMATTED.PRINTABLE)) {
                Sides []arr = new Sides[3];
                arr[0] = Sides.ONE_SIDED;
                arr[1] = Sides.TWO_SIDED_LONG_EDGE;
                arr[2] = Sides.TWO_SIDED_SHORT_EDGE;
                return arr;
            } else {
                return null;
            }
        } else {
            return null;
        }
    }

    private boolean isSupportedCopies(Copies copies) {
        int numCopies = copies.getValue();
        return (numCopies > 0 && numCopies < MAXCOPIES);
    }

    private boolean isSupportedMedia(MediaSizeName msn) {
        for (int i=0; i<mediaSizes.length; i++) {
            if (msn.equals(mediaSizes[i])) {
                return true;
            }
        }
        return false;
    }

    public boolean isAttributeValueSupported(Attribute attr,
                                             DocFlavor flavor,
                                             AttributeSet attributes) {
        if (attr == null) {
            throw new NullPointerException("null attribute");
        }
        if (flavor != null && !isDocFlavorSupported(flavor)) {
            throw new IllegalArgumentException(flavor +
                                               " is an unsupported flavor");
        }
        Class category = attr.getCategory();
        if (!isAttributeCategorySupported(category)) {
            return false;
        }
        else if (attr.getCategory() == Chromaticity.class) {
            return attr == Chromaticity.COLOR;
        }
        else if (attr.getCategory() == Copies.class) {
            return isSupportedCopies((Copies)attr);
        } else if (attr.getCategory() == Media.class &&
                   attr instanceof MediaSizeName) {
            return isSupportedMedia((MediaSizeName)attr);
        } else if (attr.getCategory() == OrientationRequested.class) {
            if (attr == OrientationRequested.REVERSE_PORTRAIT ||
                (flavor != null) &&
                !(flavor.equals(DocFlavor.SERVICE_FORMATTED.PAGEABLE) ||
                flavor.equals(DocFlavor.SERVICE_FORMATTED.PRINTABLE))) {
                return false;
            }
        } else if (attr.getCategory() == PageRanges.class) {
            if (flavor != null &&
                !(flavor.equals(DocFlavor.SERVICE_FORMATTED.PAGEABLE) ||
                flavor.equals(DocFlavor.SERVICE_FORMATTED.PRINTABLE))) {
                return false;
            }
        } else if (attr.getCategory() == SheetCollate.class) {
            if (flavor != null &&
                !(flavor.equals(DocFlavor.SERVICE_FORMATTED.PAGEABLE) ||
                flavor.equals(DocFlavor.SERVICE_FORMATTED.PRINTABLE))) {
                return false;
            }
        } else if (attr.getCategory() == Sides.class) {
            if (flavor != null &&
                !(flavor.equals(DocFlavor.SERVICE_FORMATTED.PAGEABLE) ||
                flavor.equals(DocFlavor.SERVICE_FORMATTED.PRINTABLE))) {
                return false;
            }
        }
        return true;
    }

    public AttributeSet getUnsupportedAttributes(DocFlavor flavor,
                                                 AttributeSet attributes) {

        if (flavor != null && !isDocFlavorSupported(flavor)) {
            throw new IllegalArgumentException("flavor " + flavor +
                                               "is not supported");
        }

        if (attributes == null) {
            return null;
        }

        Attribute attr;
        AttributeSet unsupp = new HashAttributeSet();
        Attribute[] attrs = attributes.toArray();
        for (int i=0; i<attrs.length; i++) {
            try {
                attr = attrs[i];
                if (!isAttributeCategorySupported(attr.getCategory())) {
                    unsupp.add(attr);
                } else if (!isAttributeValueSupported(attr, flavor,
                                                      attributes)) {
                    unsupp.add(attr);
                }
            } catch (ClassCastException e) {
            }
        }
        if (unsupp.isEmpty()) {
            return null;
        } else {
            return unsupp;
        }
    }

    public ServiceUIFactory getServiceUIFactory() {
        return null;
    }

    public String toString() {
        return "PSStreamPrintService: " + getName();
    }

    /* Stream services have an output stream which cannot be shared,
     * so two services are equal only if they are the same object.
     */
    public boolean equals(Object obj) {
        return (obj == this ||
                 (obj instanceof PSStreamPrintService &&
                 ((PSStreamPrintService)obj).getName().equals(getName())));
    }

   public int hashCode() {
        return this.getClass().hashCode()+getName().hashCode();
    }

}