    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 1.5 2007/11/02 17:50:36 taqua 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    import javax.swing.JComponent;
    054
    055    /**
    056     * A panel that displays a paint sample.
    057     *
    058     * @author David Gilbert
    059     */
    060    public class PaintSample extends JComponent {
    061
    062        /** The paint. */
    063        private Paint paint;
    064
    065        /** The preferred size of the component. */
    066        private Dimension preferredSize;
    067
    068        /**
    069         * Standard constructor - builds a paint sample.
    070         *
    071         * @param paint   the paint to display.
    072         */
    073        public PaintSample(final Paint paint) {
    074            this.paint = paint;
    075            this.preferredSize = new Dimension(80, 12);
    076        }
    077
    078        /**
    079         * Returns the current Paint object being displayed in the panel.
    080         *
    081         * @return the paint.
    082         */
    083        public Paint getPaint() {
    084            return this.paint;
    085        }
    086
    087        /**
    088         * Sets the Paint object being displayed in the panel.
    089         *
    090         * @param paint  the paint.
    091         */
    092        public void setPaint(final Paint paint) {
    093            this.paint = paint;
    094            repaint();
    095        }
    096
    097        /**
    098         * Returns the preferred size of the component.
    099         *
    100         * @return the preferred size.
    101         */
    102        public Dimension getPreferredSize() {
    103            return this.preferredSize;
    104        }
    105
    106        /**
    107         * Fills the component with the current Paint.
    108         *
    109         * @param g  the graphics device.
    110         */
    111        public void paintComponent(final Graphics g) {
    112
    113            final Graphics2D g2 = (Graphics2D) g;
    114            final Dimension size = getSize();
    115            final Insets insets = getInsets();
    116            final double xx = insets.left;
    117            final double yy = insets.top;
    118            final double ww = size.getWidth() - insets.left - insets.right - 1;
    119            final double hh = size.getHeight() - insets.top - insets.bottom - 1;
    120            final Rectangle2D area = new Rectangle2D.Double(xx, yy, ww, hh);
    121            g2.setPaint(this.paint);
    122            g2.fill(area);
    123            g2.setPaint(Color.black);
    124            g2.draw(area);
    125
    126        }
    127
    128    }