001 /* ===========================================================
002 * JFreeChart : a free chart library for the Java(tm) platform
003 * ===========================================================
004 *
005 * (C) Copyright 2000-2007, 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 * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
025 * in the United States and other countries.]
026 *
027 * ------------------
028 * PaletteSample.java
029 * ------------------
030 * (C) Copyright 2002-2007, by David M. O'Donnell.
031 *
032 * Original Author: David M. O'Donnell;
033 * Contributor(s): David Gilbert (for Object Refinery Limited);
034 *
035 * $Id: PaletteSample.java,v 1.1.2.2 2007/01/31 15:56:18 mungady Exp $
036 *
037 * Changes
038 * -------
039 * 21-Jan-2003 : Added standard header (DG);
040 * ------------- JFREECHART 1.0.x ---------------------------------------------
041 * 31-Jan-2007 : Deprecated (DG);
042 *
043 */
044
045 package org.jfree.chart.editor;
046
047 import java.awt.BasicStroke;
048 import java.awt.Component;
049 import java.awt.Dimension;
050 import java.awt.Graphics;
051 import java.awt.Graphics2D;
052 import java.awt.Insets;
053 import java.awt.RenderingHints;
054 import java.awt.geom.Line2D;
055
056 import javax.swing.JComponent;
057 import javax.swing.JList;
058 import javax.swing.ListCellRenderer;
059
060 import org.jfree.chart.plot.ColorPalette;
061 import org.jfree.chart.plot.XYPlot;
062 import org.jfree.chart.renderer.xy.XYBlockRenderer;
063
064
065 /**
066 * A panel that displays a palette sample.
067 *
068 * @deprecated This class is no longer supported. If you are creating
069 * contour plots, please try to use {@link XYPlot} and
070 * {@link XYBlockRenderer}.
071 */
072 public class PaletteSample extends JComponent implements ListCellRenderer {
073
074 /** The palette being displayed. */
075 private ColorPalette palette;
076
077 /** The preferred size of the component; */
078 private Dimension preferredSize;
079
080 /**
081 * Creates a new sample.
082 *
083 * @param palette the palette.
084 */
085 public PaletteSample(ColorPalette palette) {
086 this.palette = palette;
087 this.preferredSize = new Dimension(80, 18);
088 }
089
090 /**
091 * Returns a list cell renderer for the stroke, so the sample can be
092 * displayed in a list or combo.
093 *
094 * @param list the list component.
095 * @param value the value.
096 * @param index the index.
097 * @param isSelected a flag that indicates whether or not the item is
098 * selected.
099 * @param cellHasFocus a flag that indicates whether or not the cell has
100 * the focus.
101 *
102 * @return The renderer.
103 */
104 public Component getListCellRendererComponent(JList list, Object value,
105 int index,
106 boolean isSelected,
107 boolean cellHasFocus) {
108 if (value instanceof PaletteSample) {
109 PaletteSample in = (PaletteSample) value;
110 setPalette(in.getPalette());
111 }
112 return this;
113 }
114
115 /**
116 * Returns the current palette object being displayed.
117 *
118 * @return The palette.
119 */
120 public ColorPalette getPalette() {
121 return this.palette;
122 }
123
124 /**
125 * Returns the preferred size of the component.
126 *
127 * @return The preferred size.
128 */
129 public Dimension getPreferredSize() {
130 return this.preferredSize;
131 }
132
133 /**
134 * Draws the sample.
135 *
136 * @param g the graphics device.
137 */
138 public void paintComponent(Graphics g) {
139
140 Graphics2D g2 = (Graphics2D) g;
141 g2.setRenderingHint(
142 RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_OFF
143 );
144 Dimension size = getSize();
145 Insets insets = getInsets();
146 double ww = size.getWidth() - insets.left - insets.right;
147 double hh = size.getHeight() - insets.top - insets.bottom;
148
149 g2.setStroke(new BasicStroke(1.0f));
150
151 double y1 = insets.top;
152 double y2 = y1 + hh;
153 double xx = insets.left;
154 Line2D line = new Line2D.Double();
155 int count = 0;
156 while (xx <= insets.left + ww) {
157 count++;
158 line.setLine(xx, y1, xx, y2);
159 g2.setPaint(this.palette.getColor(count));
160 g2.draw(line);
161 xx += 1;
162 }
163 }
164
165 /**
166 * Sets the palette object being displayed.
167 *
168 * @param palette the palette.
169 */
170 public void setPalette(ColorPalette palette) {
171 this.palette = palette;
172 this.repaint();
173 }
174
175 }