    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     * BasicStrokeReadHandler
    029     * ----------------------
    030     * (C) Copyright 2003, by Thomas Morgner and Contributors.
    031     *
    032     * Original Author:  Thomas Morgner;
    033     * Contributor(s):   David Gilbert (for Object Refinery Limited);
    034     *
    035     * $Id: BasicStrokeReadHandler.java,v 1.2 2005/10/18 13:33:32 mungady Exp $
    036     *
    037     * Changes (from 25-Nov-2003)
    038     * --------------------------
    039     * 25-Nov-2003 : Added standard header and Javadocs (DG);
    040     *
    041     */
    042
    043    package org.jfree.xml.parser.coretypes;
    044
    045    import java.awt.BasicStroke;
    046    import java.util.StringTokenizer;
    047
    048    import org.jfree.xml.parser.AbstractXmlReadHandler;
    049    import org.xml.sax.Attributes;
    050    import org.xml.sax.SAXException;
    051
    052    /**
    053     * A SAX handler for reading a {@link BasicStroke} object from XML.
    054     * <p>
    055     * To do: this should have a multiplexer in front like the PaintReadHandler
    056     */
    057    public class BasicStrokeReadHandler extends AbstractXmlReadHandler  {
    058
    059        /** The stroke under construction. */
    060        private BasicStroke stroke;
    061
    062        /**
    063         * Creates a new handler.
    064         */
    065        public BasicStrokeReadHandler() {
    066            super();
    067        }
    068
    069        /**
    070         * Called at the start of parsing a {@link BasicStroke} element, this method reads the
    071         * attributes and constructs the stroke.
    072         *
    073         * @param attrs  the attributes.
    074         *
    075         * @throws SAXException to indicate a parsing error.
    076         */
    077        protected void startParsing(final Attributes attrs) throws SAXException {
    078            final int endCap = Integer.parseInt(attrs.getValue("endCap"));
    079            final int lineJoin = Integer.parseInt(attrs.getValue("lineJoin"));
    080            final float lineWidth = Float.parseFloat(attrs.getValue("lineWidth"));
    081            final float miterLimit = Float.parseFloat(attrs.getValue("miterLimit"));
    082            final String dashArrayAttrib = attrs.getValue("dashArray");
    083            if (dashArrayAttrib != null) {
    084                final float[] dashArray = parseDashArray(dashArrayAttrib);
    085                final float dashPhase = Float.parseFloat(attrs.getValue("dashPhase"));
    086                this.stroke = new BasicStroke(
    087                    lineWidth, endCap, lineJoin, miterLimit, dashArray, dashPhase
    088                );
    089            }
    090            else {
    091                this.stroke = new BasicStroke(lineWidth, endCap, lineJoin, miterLimit);
    092            }
    093        }
    094
    095        /**
    096         * Parses the dash array.
    097         *
    098         * @param string  the dash array string representation.
    099         *
    100         * @return a dash array.
    101         */
    102        private float[] parseDashArray(final String string) {
    103            final StringTokenizer tokenizer = new StringTokenizer(string, ",");
    104            final float[] retVal = new float[tokenizer.countTokens()];
    105            for (int i = 0; i < retVal.length; i++) {
    106                retVal[i] = Float.parseFloat(tokenizer.nextToken());
    107            }
    108            return retVal;
    109        }
    110
    111        /**
    112         * Returns the stroke under construction.
    113         *
    114         * @return the stroke.
    115         */
    116        public Object getObject() {
    117            return this.stroke;
    118        }
    119
    120    }