    001/* ===================================================
    002 * JFreeSVG : an SVG library for the Java(tm) platform
    003 * ===================================================
    004 *
    005 * (C)opyright 2013-2015, by Object Refinery Limited.  All rights reserved.
    006 *
    007 * Project Info:  http://www.jfree.org/jfreesvg/index.html
    008 *
    009 * This program is free software: you can redistribute it and/or modify
    010 * it under the terms of the GNU General Public License as published by
    011 * the Free Software Foundation, either version 3 of the License, or
    012 * (at your option) any later version.
    013 *
    014 * This program is distributed in the hope that it will be useful,
    015 * but WITHOUT ANY WARRANTY; without even the implied warranty of
    016 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    017 * GNU General Public License for more details.
    018 *
    019 * You should have received a copy of the GNU General Public License
    020 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
    021 *
    022 * [Oracle and Java are registered trademarks of Oracle and/or its affiliates.
    023 * Other names may be trademarks of their respective owners.]
    024 *
    025 * If you do not wish to be bound by the terms of the GPL, an alternative
    026 * commercial license can be purchased.  For details, please see visit the
    027 * JFreeSVG home page:
    028 *
    029 * http://www.jfree.org/jfreesvg
    030 *
    031 */
    032
    033package org.jfree.graphics2d.svg;
    034
    035import java.awt.Font;
    036import java.util.HashMap;
    037import java.util.Map;
    038import org.jfree.graphics2d.Args;
    039
    040/**
    041 * A default implementation of the {@link FontMapper} interface.  This
    042 * implementation will map the Java logical fonts to equivalent SVG generic
    043 * fonts.  You can add your own mappings if you need to.
    044 *
    045 * @since 1.5
    046 */
    047public class StandardFontMapper implements FontMapper {
    048
    049    /** Storage for the alternates. */
    050    private Map<String, String> alternates;
    051
    052    /**
    053     * Creates a new instance with mappings for the Java logical fonts.
    054     */
    055    public StandardFontMapper() {
    056        this.alternates = new HashMap<String, String>();
    057        this.alternates.put(Font.DIALOG, "sans-serif");
    058        this.alternates.put(Font.DIALOG_INPUT, "monospace");
    059        this.alternates.put(Font.SANS_SERIF, "sans-serif");
    060        this.alternates.put(Font.SERIF, "serif");
    061        this.alternates.put(Font.MONOSPACED, "monospace");
    062    }
    063
    064    /**
    065     * Returns the mapped (alternate) font family name.
    066     *
    067     * @param family  the font family ({@code null} not permitted).
    068     *
    069     * @return The alternate font family name (possibly {@code null}).
    070     */
    071    public String get(String family) {
    072        Args.nullNotPermitted(family, "family");
    073        return this.alternates.get(family);
    074    }
    075
    076    /**
    077     * Adds a font family mapping (if the specified alternate is
    078     * {@code null} it has the effect of clearing any existing mapping).
    079     *
    080     * @param family  the font family name ({@code null} not permitted).
    081     * @param alternate  the alternate ({@code null} permitted).
    082     */
    083    public void put(String family, String alternate) {
    084        Args.nullNotPermitted(family, "family");
    085        this.alternates.put(family, alternate);
    086    }
    087
    088    /**
    089     * Maps the specified font family name to an alternative, or else returns
    090     * the same family name.
    091     *
    092     * @param family  the font family name ({@code null} not permitted).
    093     *
    094     * @return The same font family name or an alternative (never {@code null}).
    095     */
    096    @Override
    097    public String mapFont(String family) {
    098        Args.nullNotPermitted(family, "family");
    099        String alternate = this.alternates.get(family);
    100        if (alternate != null) {
    101            return alternate;
    102        }
    103        return family;
    104    }
    105
    106}