    001    /* ========================================================================
    002     * JCommon : a free general purpose class library for the Java(tm) platform
    003     * ========================================================================
    004     *
    005     * (C) Copyright 2000-2005, by Object Refinery Limited and Contributors.
    006     *
    007     * Project Info:  http://www.jfree.org/jcommon/index.html
    008     *
    009     * This library is free software; you can redistribute it and/or modify it
    010     * under the terms of the GNU Lesser General Public License as published by
    011     * the Free Software Foundation; either version 2.1 of the License, or
    012     * (at your option) any later version.
    013     *
    014     * This library is distributed in the hope that it will be useful, but
    015     * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
    016     * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
    017     * License for more details.
    018     *
    019     * You should have received a copy of the GNU Lesser General Public
    020     * License along with this library; if not, write to the Free Software
    021     * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
    022     * USA.
    023     *
    024     * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
    025     * in the United States and other countries.]
    026     *
    027     * ----------------------------
    028     * BasicStrokeWriteHandler.java
    029     * ----------------------------
    030     * (C)opyright 2003-2005, by Thomas Morgner and Contributors.
    031     *
    032     * Original Author:  Thomas Morgner;
    033     * Contributor(s):   David Gilbert (for Object Refinery Limited);
    034     *
    035     * $Id: BasicStrokeWriteHandler.java,v 1.3 2005/10/18 13:35:21 mungady Exp $
    036     *
    037     * Changes
    038     * -------
    039     * 12-Nov-2003 : Initial version (TM);
    040     * 25-Nov-2003 : Updated header (DG);
    041     *
    042     */
    043
    044    package org.jfree.xml.writer.coretypes;
    045
    046    import java.awt.BasicStroke;
    047    import java.io.IOException;
    048
    049    import org.jfree.xml.writer.AbstractXmlWriteHandler;
    050    import org.jfree.xml.writer.AttributeList;
    051    import org.jfree.xml.writer.XMLWriter;
    052    import org.jfree.xml.writer.XMLWriterException;
    053
    054    /**
    055     * A handler that can write the XML description for a {@link BasicStroke} object.
    056     */
    057    public class BasicStrokeWriteHandler extends AbstractXmlWriteHandler  {
    058
    059        /**
    060         * Creates a new handler.
    061         */
    062        public BasicStrokeWriteHandler() {
    063            super();
    064        }
    065
    066        /**
    067         * Performs the writing of a single object.
    068         *
    069         * @param tagName  the tag name.
    070         * @param object  the object ({@link BasicStroke} expected).
    071         * @param writer  the writer.
    072         * @param mPlexAttribute  ??
    073         * @param mPlexValue  ??
    074         *
    075         * @throws IOException if there is an I/O problem.
    076         * @throws XMLWriterException if there is a problem with the writer.
    077         */
    078        public void write(final String tagName, final Object object, final XMLWriter writer,
    079                          final String mPlexAttribute, final String mPlexValue)
    080            throws IOException, XMLWriterException {
    081            final BasicStroke stroke = (BasicStroke) object;
    082            final float[] dashArray = stroke.getDashArray();
    083            final float dashPhase = stroke.getDashPhase();
    084            final int endCap = stroke.getEndCap();
    085            final int lineJoin = stroke.getLineJoin();
    086            final float lineWidth = stroke.getLineWidth();
    087            final float miterLimit = stroke.getMiterLimit();
    088            final AttributeList attribs = new AttributeList();
    089            if (mPlexAttribute != null) {
    090                attribs.setAttribute(mPlexAttribute, mPlexValue);
    091            }
    092            attribs.setAttribute("type", "basic");
    093            attribs.setAttribute("endCap", String.valueOf(endCap));
    094            attribs.setAttribute("lineJoin", String.valueOf(lineJoin));
    095            attribs.setAttribute("lineWidth", String.valueOf(lineWidth));
    096            attribs.setAttribute("miterLimit", String.valueOf(miterLimit));
    097            if (dashArray != null) {
    098                attribs.setAttribute("dashArray", toString(dashArray));
    099                attribs.setAttribute("dashPhase", String.valueOf(dashPhase));
    100            }
    101            writer.writeTag(tagName, attribs, true);
    102        }
    103
    104        /**
    105         * A utility method that converts a dash array (from a {@link BasicStroke} object) to
    106         * a {@link String}.
    107         *
    108         * @param dashArray  the dash array.
    109         *
    110         * @return a {@link String} representing the dash array.
    111         */
    112        private String toString(final float[] dashArray) {
    113            final StringBuffer buffer = new StringBuffer();
    114            for (int i = 0; i < dashArray.length; i++) {
    115                final float f = dashArray[i];
    116                if (i != 0) {
    117                    buffer.append(',');
    118                }
    119                buffer.append(f);
    120            }
    121            return buffer.toString();
    122        }
    123
    124    }