    001/* ===================================================
    002 * JFreeSVG : an SVG library for the Java(tm) platform
    003 * ===================================================
    004 *
    005 * (C)opyright 2013, 2014, 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.Image;
    036import org.jfree.graphics2d.Args;
    037
    038/**
    039 * A <code>(String, Image)</code> pair that links together a reference ID and
    040 * the source image.  This is used internally by {@link SVGGraphics2D} to track
    041 * images as they are rendered.  This is important when images are not embedded
    042 * in the SVG output, in which case you may need to generate corresponding
    043 * image files for the images (see also {@link SVGGraphics2D#getSVGImages()}).
    044 */
    045public final class ImageElement {
    046
    047    /** The filename specified in the href. */
    048    private String href;
    049
    050    /** The image. */
    051    private Image image;
    052
    053    /**
    054     * Creates a new instance.
    055     *
    056     * @param href  the href (<code>null</code> not permitted).
    057     * @param image  the image (<code>null</code> not permitted).
    058     */
    059    public ImageElement(String href, Image image) {
    060        Args.nullNotPermitted(href, "href");
    061        Args.nullNotPermitted(image, "image");
    062        this.href = href;
    063        this.image = image;
    064    }
    065
    066    /**
    067     * Returns the reference ID that was specified in the constructor.
    068     *
    069     * @return The href (never <code>null</code>).
    070     */
    071    public String getHref() {
    072        return href;
    073    }
    074
    075    /**
    076     * Returns the image that was specified in the constructor.
    077     *
    078     * @return The image (never <code>null</code>).
    079     */
    080    public Image getImage() {
    081        return image;
    082    }
    083
    084    /**
    085     * Returns a string representation of this object, primarily for debugging
    086     * purposes.
    087     *
    088     * @return A string.
    089     */
    090    @Override
    091    public String toString() {
    092        StringBuilder sb = new StringBuilder();
    093        sb.append("ImageElement[");
    094        sb.append(this.href).append(", ").append(this.image);
    095        sb.append("]");
    096        return sb.toString();
    097    }
    098
    099}