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 }