001/* ===========================================================
002 * JFreeChart : a free chart library for the Java(tm) platform
003 * ===========================================================
004 *
005 * (C) Copyright 2000-2013, by Object Refinery Limited and Contributors.
006 *
007 * Project Info:  http://www.jfree.org/jfreechart/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 * [Oracle and Java are registered trademarks of Oracle and/or its affiliates. 
025 * Other names may be trademarks of their respective owners.]
026 *
027 * ------------------
028 * PaletteSample.java
029 * ------------------
030 * (C) Copyright 2002-2008, by David M. O'Donnell.
031 *
032 * Original Author:  David M. O'Donnell;
033 * Contributor(s):   David Gilbert (for Object Refinery Limited);
034 *
035 * Changes
036 * -------
037 * 21-Jan-2003 : Added standard header (DG);
038 * ------------- JFREECHART 1.0.x ---------------------------------------------
039 * 31-Jan-2007 : Deprecated (DG);
040 *
041 */
042
043package org.jfree.chart.editor;
044
045import java.awt.BasicStroke;
046import java.awt.Component;
047import java.awt.Dimension;
048import java.awt.Graphics;
049import java.awt.Graphics2D;
050import java.awt.Insets;
051import java.awt.RenderingHints;
052import java.awt.geom.Line2D;
053
054import javax.swing.JComponent;
055import javax.swing.JList;
056import javax.swing.ListCellRenderer;
057
058import org.jfree.chart.plot.ColorPalette;
059import org.jfree.chart.plot.XYPlot;
060import org.jfree.chart.renderer.xy.XYBlockRenderer;
061
062
063/**
064 * A panel that displays a palette sample.
065 *
066 * @deprecated This class is no longer supported (as of version 1.0.4).  If
067 *     you are creating contour plots, please try to use {@link XYPlot} and
068 *     {@link XYBlockRenderer}.
069 */
070public class PaletteSample extends JComponent implements ListCellRenderer {
071
072    /** The palette being displayed. */
073    private ColorPalette palette;
074
075    /** The preferred size of the component; */
076    private Dimension preferredSize;
077
078    /**
079     * Creates a new sample.
080     *
081     * @param palette  the palette.
082     */
083    public PaletteSample(ColorPalette palette) {
084        this.palette = palette;
085        this.preferredSize = new Dimension(80, 18);
086    }
087
088    /**
089     * Returns a list cell renderer for the stroke, so the sample can be
090     * displayed in a list or combo.
091     *
092     * @param list  the list component.
093     * @param value  the value.
094     * @param index  the index.
095     * @param isSelected  a flag that indicates whether or not the item is
096     *                    selected.
097     * @param cellHasFocus  a flag that indicates whether or not the cell has
098     *                      the focus.
099     *
100     * @return The renderer.
101     */
102    @Override
103    public Component getListCellRendererComponent(JList list, Object value,
104            int index, boolean isSelected, boolean cellHasFocus) {
105        if (value instanceof PaletteSample) {
106            PaletteSample in = (PaletteSample) value;
107            setPalette(in.getPalette());
108        }
109        return this;
110    }
111
112    /**
113     * Returns the current palette object being displayed.
114     *
115     * @return The palette.
116     */
117    public ColorPalette getPalette() {
118        return this.palette;
119    }
120
121    /**
122     * Returns the preferred size of the component.
123     *
124     * @return The preferred size.
125     */
126    @Override
127    public Dimension getPreferredSize() {
128        return this.preferredSize;
129    }
130
131    /**
132     * Draws the sample.
133     *
134     * @param g  the graphics device.
135     */
136    @Override
137    public void paintComponent(Graphics g) {
138
139        Graphics2D g2 = (Graphics2D) g;
140        g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, 
141                RenderingHints.VALUE_ANTIALIAS_OFF);
142        Dimension size = getSize();
143        Insets insets = getInsets();
144        double ww = size.getWidth() - insets.left - insets.right;
145        double hh = size.getHeight() - insets.top - insets.bottom;
146
147        g2.setStroke(new BasicStroke(1.0f));
148
149        double y1 = insets.top;
150        double y2 = y1 + hh;
151        double xx = insets.left;
152        Line2D line = new Line2D.Double();
153        int count = 0;
154        while (xx <= insets.left + ww) {
155            count++;
156            line.setLine(xx, y1, xx, y2);
157            g2.setPaint(this.palette.getColor(count));
158            g2.draw(line);
159            xx += 1;
160        }
161    }
162
163    /**
164     * Sets the palette object being displayed.
165     *
166     * @param palette  the palette.
167     */
168    public void setPalette(ColorPalette palette) {
169        this.palette = palette;
170        this.repaint();
171    }
172
173}