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Java example source code file (CustomMediaSizeName.java)

This example Java source code file (CustomMediaSizeName.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.

Learn more about this Java project at its project page.

Java - Java tags/keywords

arraylist, custommediasizename, enumsyntax, illegalargumentexception, mediasizename, string, util

The CustomMediaSizeName.java Java example source code

/*
 * Copyright (c) 2003, 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 javax.print.attribute.EnumSyntax;
import javax.print.attribute.standard.Media;
import javax.print.attribute.standard.MediaSize;
import javax.print.attribute.standard.MediaSizeName;
import java.util.ArrayList;

class CustomMediaSizeName extends MediaSizeName {
    private static ArrayList customStringTable = new ArrayList();
    private static ArrayList customEnumTable = new ArrayList();
    private String choiceName;
    private MediaSizeName mediaName;

    private CustomMediaSizeName(int x) {
        super(x);

    }

    private synchronized static int nextValue(String name) {
      customStringTable.add(name);

      return (customStringTable.size()-1);
    }

    public CustomMediaSizeName(String name) {
        super(nextValue(name));
        customEnumTable.add(this);
        choiceName = null;
        mediaName = null;
    }

    public CustomMediaSizeName(String name, String choice,
                               float width, float length) {
        super(nextValue(name));
        choiceName = choice;
        customEnumTable.add(this);
        mediaName = null;
        try {
            mediaName = MediaSize.findMedia(width, length,
                                            MediaSize.INCH);
        } catch (IllegalArgumentException iae) {
        }
    }

    /**
     * Version ID for serialized form.
     */
    private static final long serialVersionUID = 7412807582228043717L;

    /**
     * Returns the command string for this media.
     */
    public String getChoiceName() {
        return choiceName;
    }


    /**
     * Returns matching standard MediaSizeName.
     */
    public MediaSizeName getStandardMedia() {
        return mediaName;
    }


    // moved from RasterPrinterJob
    /**
     * Returns closest matching MediaSizeName among given array of Media
     */
    public static MediaSizeName findMedia(Media[] media, float x, float y,
                                          int units) {


        if (x <= 0.0f || y <= 0.0f || units < 1) {
            throw new IllegalArgumentException("args must be +ve values");
        }

        if (media == null || media.length == 0) {
            throw new IllegalArgumentException("args must have valid array of media");
        }

        int size =0;
        MediaSizeName[] msn = new MediaSizeName[media.length];
        for (int i=0; i<media.length; i++) {
            if (media[i] instanceof MediaSizeName) {
                msn[size++] = (MediaSizeName)media[i];
            }
        }

        if (size == 0) {
            return null;
        }

        int match = 0;

        double ls = x * x + y * y;
        double tmp_ls;
        float []dim;
        float diffx = x;
        float diffy = y;

        for (int i=0; i < size ; i++) {
            MediaSize mediaSize = MediaSize.getMediaSizeForName(msn[i]);
            if (mediaSize == null) {
                continue;
            }
            dim = mediaSize.getSize(units);
            if (x == dim[0] && y == dim[1]) {
                match = i;
                break;
            } else {
                diffx = x - dim[0];
                diffy = y - dim[1];
                tmp_ls = diffx * diffx + diffy * diffy;
                if (tmp_ls < ls) {
                    ls = tmp_ls;
                    match = i;
                }
            }
        }

        return msn[match];
    }

    /**
     * Returns the string table for super class MediaSizeName.
     */
    public  Media[] getSuperEnumTable() {
        return (Media[])super.getEnumValueTable();
    }


    /**
     * Returns the string table for class CustomMediaSizeName.
     */
    protected String[] getStringTable() {
      String[] nameTable = new String[customStringTable.size()];
      return (String[])customStringTable.toArray(nameTable);
    }

    /**
     * Returns the enumeration value table for class CustomMediaSizeName.
     */
    protected EnumSyntax[] getEnumValueTable() {
      MediaSizeName[] enumTable = new MediaSizeName[customEnumTable.size()];
      return (MediaSizeName[])customEnumTable.toArray(enumTable);
    }

}

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