    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     * PaintSample.java
    029     * ----------------
    030     * (C) Copyright 2000-2004, by Object Refinery Limited.
    031     *
    032     * Original Author:  David Gilbert (for Object Refinery Limited);
    033     * Contributor(s):   -;
    034     *
    035     * $Id: PaintSample.java,v 1.3 2005/10/18 13:18:34 mungady Exp $
    036     *
    037     * Changes (from 26-Oct-2001)
    038     * --------------------------
    039     * 26-Oct-2001 : Changed package to com.jrefinery.ui.*;
    040     * 14-Oct-2002 : Fixed errors reported by Checkstyle (DG);
    041     *
    042     */
    043
    044    package org.jfree.ui;
    045
    046    import java.awt.Color;
    047    import java.awt.Dimension;
    048    import java.awt.Graphics;
    049    import java.awt.Graphics2D;
    050    import java.awt.Insets;
    051    import java.awt.Paint;
    052    import java.awt.geom.Rectangle2D;
    053
    054    import javax.swing.JComponent;
    055
    056    /**
    057     * A panel that displays a paint sample.
    058     *
    059     * @author David Gilbert
    060     */
    061    public class PaintSample extends JComponent {
    062
    063        /** The paint. */
    064        private Paint paint;
    065
    066        /** The preferred size of the component. */
    067        private Dimension preferredSize;
    068
    069        /**
    070         * Standard constructor - builds a paint sample.
    071         *
    072         * @param paint   the paint to display.
    073         */
    074        public PaintSample(final Paint paint) {
    075            this.paint = paint;
    076            this.preferredSize = new Dimension(80, 12);
    077        }
    078
    079        /**
    080         * Returns the current Paint object being displayed in the panel.
    081         *
    082         * @return the paint.
    083         */
    084        public Paint getPaint() {
    085            return this.paint;
    086        }
    087
    088        /**
    089         * Sets the Paint object being displayed in the panel.
    090         *
    091         * @param paint  the paint.
    092         */
    093        public void setPaint(final Paint paint) {
    094            this.paint = paint;
    095            repaint();
    096        }
    097
    098        /**
    099         * Returns the preferred size of the component.
    100         *
    101         * @return the preferred size.
    102         */
    103        public Dimension getPreferredSize() {
    104            return this.preferredSize;
    105        }
    106
    107        /**
    108         * Fills the component with the current Paint.
    109         *
    110         * @param g  the graphics device.
    111         */
    112        public void paintComponent(final Graphics g) {
    113
    114            final Graphics2D g2 = (Graphics2D) g;
    115            final Dimension size = getSize();
    116            final Insets insets = getInsets();
    117            final double xx = insets.left;
    118            final double yy = insets.top;
    119            final double ww = size.getWidth() - insets.left - insets.right - 1;
    120            final double hh = size.getHeight() - insets.top - insets.bottom - 1;
    121            final Rectangle2D area = new Rectangle2D.Double(xx, yy, ww, hh);
    122            g2.setPaint(this.paint);
    123            g2.fill(area);
    124            g2.setPaint(Color.black);
    125            g2.draw(area);
    126
    127        }
    128
    129    }