001 /* ===========================================================
002 * JFreeChart : a free chart library for the Java(tm) platform
003 * ===========================================================
004 *
005 * (C) Copyright 2000-2008, 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 2002-2008, 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
043 package org.jfree.chart.editor;
044
045 import java.awt.BasicStroke;
046 import java.awt.Component;
047 import java.awt.Dimension;
048 import java.awt.Graphics;
049 import java.awt.Graphics2D;
050 import java.awt.Insets;
051 import java.awt.RenderingHints;
052 import java.awt.geom.Line2D;
053
054 import javax.swing.JComponent;
055 import javax.swing.JList;
056 import javax.swing.ListCellRenderer;
057
058 import org.jfree.chart.plot.ColorPalette;
059 import org.jfree.chart.plot.XYPlot;
060 import 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 */
070 public 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 public Component getListCellRendererComponent(JList list, Object value,
103 int index,
104 boolean isSelected,
105 boolean cellHasFocus) {
106 if (value instanceof PaletteSample) {
107 PaletteSample in = (PaletteSample) value;
108 setPalette(in.getPalette());
109 }
110 return this;
111 }
112
113 /**
114 * Returns the current palette object being displayed.
115 *
116 * @return The palette.
117 */
118 public ColorPalette getPalette() {
119 return this.palette;
120 }
121
122 /**
123 * Returns the preferred size of the component.
124 *
125 * @return The preferred size.
126 */
127 public Dimension getPreferredSize() {
128 return this.preferredSize;
129 }
130
131 /**
132 * Draws the sample.
133 *
134 * @param g the graphics device.
135 */
136 public void paintComponent(Graphics g) {
137
138 Graphics2D g2 = (Graphics2D) g;
139 g2.setRenderingHint(
140 RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_OFF
141 );
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 }