1 /* CSSColor.java -- Converts CSS color values 2 Copyright (C) 2006 Free Software Foundation, Inc. 3 4 This file is part of GNU Classpath. 5 6 GNU Classpath is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 2, or (at your option) 9 any later version. 10 11 GNU Classpath is distributed in the hope that it will be useful, but 12 WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with GNU Classpath; see the file COPYING. If not, write to the 18 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 19 02110-1301 USA. 20 21 Linking this library statically or dynamically with other modules is 22 making a combined work based on this library. Thus, the terms and 23 conditions of the GNU General Public License cover the whole 24 combination. 25 26 As a special exception, the copyright holders of this library give you 27 permission to link this library with independent modules to produce an 28 executable, regardless of the license terms of these independent 29 modules, and to copy and distribute the resulting executable under 30 terms of your choice, provided that you also meet, for each linked 31 independent module, the terms and conditions of the license of that 32 module. An independent module is a module which is not derived from 33 or based on this library. If you modify this library, you may extend 34 this exception to your version of the library, but you are not 35 obligated to do so. If you do not wish to do so, delete this 36 exception statement from your version. */ 37 38 39 package gnu.javax.swing.text.html.css; 40 41 import java.awt.Color; 42 import java.util.HashMap; 43 import java.util.Iterator; 44 import java.util.Set; 45 46 /** 47 * Converts CSS color values into AWT Color values. 48 * 49 * @author Roman Kennke (kennke@aicas.com) 50 */ 51 public class CSSColor 52 { 53 54 private static final HashMap COLOR_MAP; 55 static 56 { 57 COLOR_MAP = new HashMap(); 58 COLOR_MAP.put("maroon", "#800000"); 59 COLOR_MAP.put("red", "#ff0000"); 60 COLOR_MAP.put("orange", "#ffa500"); 61 COLOR_MAP.put("yellow", "#ffff00"); 62 COLOR_MAP.put("olive", "#808000"); 63 COLOR_MAP.put("purple", "#800080"); 64 COLOR_MAP.put("fuchsia", "#ff00ff"); 65 COLOR_MAP.put("white", "#ffffff"); 66 COLOR_MAP.put("lime", "#00ff00"); 67 COLOR_MAP.put("green", "#008000"); 68 COLOR_MAP.put("navy", "#000080"); 69 COLOR_MAP.put("blue", "#0000ff"); 70 COLOR_MAP.put("aqua", "#00ffff"); 71 COLOR_MAP.put("teal", "#008080"); 72 COLOR_MAP.put("black", "#000000"); 73 COLOR_MAP.put("silver", "#c0c0c0"); 74 COLOR_MAP.put("gray", "#808080"); 75 } 76 77 /** 78 * The CSS value. 79 */ 80 private String value; 81 82 /** 83 * The converted color. 84 */ 85 private Color color; 86 87 /** 88 * Creates a new instance. 89 * 90 * @param val the CSS value 91 */ CSSColor(String val)92 public CSSColor(String val) 93 { 94 value = val; 95 color = convertValue(value); 96 } 97 98 /** 99 * Converts a CSS color value to an AWT color. 100 * 101 * @param value the CSS color value 102 * 103 * @return the converted color value 104 */ convertValue(String value)105 public static Color convertValue(String value) 106 { 107 Color color; 108 String val1 = value.toLowerCase(); 109 if (val1.charAt(0) != '#') 110 val1 = (String) COLOR_MAP.get(val1); 111 if (val1 != null) 112 { 113 String hexVal = val1.substring(1).trim(); 114 try 115 { 116 int rgb = Integer.parseInt(hexVal, 16); 117 color = new Color(rgb); 118 } 119 catch (NumberFormatException ex) 120 { 121 color = Color.BLACK; 122 } 123 } 124 else 125 color = null; 126 return color; 127 } 128 129 /** 130 * Returns the converted color. 131 * 132 * @return the converted color 133 */ getValue()134 public Color getValue() 135 { 136 return color; 137 } 138 toString()139 public String toString() 140 { 141 return value; 142 } 143 144 /** 145 * Returns <code>true</code> if the specified value is a valid color value, 146 * <code>false</code> otherwise. 147 * 148 * @param val the value to check 149 * 150 * @return <code>true</code> if the specified value is a valid color value, 151 * <code>false</code> otherwise 152 */ isValidColor(String val)153 public static boolean isValidColor(String val) 154 { 155 boolean ret = false; 156 if (val.charAt(0) == '#') 157 ret = true; 158 else 159 { 160 Set colors = COLOR_MAP.keySet(); 161 for (Iterator i = colors.iterator(); i.hasNext() && ret == false;) 162 { 163 String color = (String) i.next(); 164 if (color.equalsIgnoreCase(val)) 165 ret = true; 166 } 167 } 168 return ret; 169 } 170 } 171