001/*
002 * SVG Salamander
003 * Copyright (c) 2004, Mark McKay
004 * All rights reserved.
005 *
006 * Redistribution and use in source and binary forms, with or 
007 * without modification, are permitted provided that the following
008 * conditions are met:
009 *
010 *   - Redistributions of source code must retain the above 
011 *     copyright notice, this list of conditions and the following
012 *     disclaimer.
013 *   - Redistributions in binary form must reproduce the above
014 *     copyright notice, this list of conditions and the following
015 *     disclaimer in the documentation and/or other materials 
016 *     provided with the distribution.
017 *
018 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
019 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
020 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
021 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
022 * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
023 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
024 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
025 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
026 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
027 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
028 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
029 * OF THE POSSIBILITY OF SUCH DAMAGE. 
030 * 
031 * Mark McKay can be contacted at mark@kitfox.com.  Salamander and other
032 * projects can be found at http://www.kitfox.com
033 *
034 * Created on January 26, 2004, 4:34 AM
035 */
036
037package com.kitfox.svg.xml;
038
039import java.awt.*;
040import java.util.*;
041import java.util.regex.Matcher;
042import java.util.regex.Pattern;
043
044/**
045 * @author Mark McKay
046 * @author <a href="mailto:mark@kitfox.com">Mark McKay</a>
047 */
048public class ColorTable 
049{
050
051    static final Map colorTable;
052    static {
053        HashMap table = new HashMap();
054
055        //We really should be interpreting the currentColor keyword as 
056        // a reference to the referring node's color, but this quick hack 
057        // will stop the program from crashing.
058        table.put("currentcolor", new Color(0x0));
059
060        table.put("aliceblue", new Color(0xf0f8ff));
061        table.put("antiquewhite", new Color(0xfaebd7));
062        table.put("aqua", new Color(0x00ffff));
063        table.put("aquamarine", new Color(0x7fffd4));
064        table.put("azure", new Color(0xf0ffff));
065        table.put("beige", new Color(0xf5f5dc));
066        table.put("bisque", new Color(0xffe4c4));
067        table.put("black", new Color(0x000000));
068        table.put("blanchedalmond", new Color(0xffebcd));
069        table.put("blue", new Color(0x0000ff));
070        table.put("blueviolet", new Color(0x8a2be2));
071        table.put("brown", new Color(0xa52a2a));
072        table.put("burlywood", new Color(0xdeb887));
073        table.put("cadetblue", new Color(0x5f9ea0));
074        table.put("chartreuse", new Color(0x7fff00));
075        table.put("chocolate", new Color(0xd2691e));
076        table.put("coral", new Color(0xff7f50));
077        table.put("cornflowerblue", new Color(0x6495ed));
078        table.put("cornsilk", new Color(0xfff8dc));
079        table.put("crimson", new Color(0xdc143c));
080        table.put("cyan", new Color(0x00ffff));
081        table.put("darkblue", new Color(0x00008b));
082        table.put("darkcyan", new Color(0x008b8b));
083        table.put("darkgoldenrod", new Color(0xb8860b));
084        table.put("darkgray", new Color(0xa9a9a9));
085        table.put("darkgreen", new Color(0x006400));
086        table.put("darkkhaki", new Color(0xbdb76b));
087        table.put("darkmagenta", new Color(0x8b008b));
088        table.put("darkolivegreen", new Color(0x556b2f));
089        table.put("darkorange", new Color(0xff8c00));
090        table.put("darkorchid", new Color(0x9932cc));
091        table.put("darkred", new Color(0x8b0000));
092        table.put("darksalmon", new Color(0xe9967a));
093        table.put("darkseagreen", new Color(0x8fbc8f));
094        table.put("darkslateblue", new Color(0x483d8b));
095        table.put("darkslategray", new Color(0x2f4f4f));
096        table.put("darkturquoise", new Color(0x00ced1));
097        table.put("darkviolet", new Color(0x9400d3));
098        table.put("deeppink", new Color(0xff1493));
099        table.put("deepskyblue", new Color(0x00bfff));
100        table.put("dimgray", new Color(0x696969));
101        table.put("dodgerblue", new Color(0x1e90ff));
102        table.put("feldspar", new Color(0xd19275));
103        table.put("firebrick", new Color(0xb22222));
104        table.put("floralwhite", new Color(0xfffaf0));
105        table.put("forestgreen", new Color(0x228b22));
106        table.put("fuchsia", new Color(0xff00ff));
107        table.put("gainsboro", new Color(0xdcdcdc));
108        table.put("ghostwhite", new Color(0xf8f8ff));
109        table.put("gold", new Color(0xffd700));
110        table.put("goldenrod", new Color(0xdaa520));
111        table.put("gray", new Color(0x808080));
112        table.put("green", new Color(0x008000));
113        table.put("greenyellow", new Color(0xadff2f));
114        table.put("honeydew", new Color(0xf0fff0));
115        table.put("hotpink", new Color(0xff69b4));
116        table.put("indianred", new Color(0xcd5c5c));
117        table.put("indigo", new Color(0x4b0082));
118        table.put("ivory", new Color(0xfffff0));
119        table.put("khaki", new Color(0xf0e68c));
120        table.put("lavender", new Color(0xe6e6fa));
121        table.put("lavenderblush", new Color(0xfff0f5));
122        table.put("lawngreen", new Color(0x7cfc00));
123        table.put("lemonchiffon", new Color(0xfffacd));
124        table.put("lightblue", new Color(0xadd8e6));
125        table.put("lightcoral", new Color(0xf08080));
126        table.put("lightcyan", new Color(0xe0ffff));
127        table.put("lightgoldenrodyellow", new Color(0xfafad2));
128        table.put("lightgrey", new Color(0xd3d3d3));
129        table.put("lightgreen", new Color(0x90ee90));
130        table.put("lightpink", new Color(0xffb6c1));
131        table.put("lightsalmon", new Color(0xffa07a));
132        table.put("lightseagreen", new Color(0x20b2aa));
133        table.put("lightskyblue", new Color(0x87cefa));
134        table.put("lightslateblue", new Color(0x8470ff));
135        table.put("lightslategray", new Color(0x778899));
136        table.put("lightsteelblue", new Color(0xb0c4de));
137        table.put("lightyellow", new Color(0xffffe0));
138        table.put("lime", new Color(0x00ff00));
139        table.put("limegreen", new Color(0x32cd32));
140        table.put("linen", new Color(0xfaf0e6));
141        table.put("magenta", new Color(0xff00ff));
142        table.put("maroon", new Color(0x800000));
143        table.put("mediumaquamarine", new Color(0x66cdaa));
144        table.put("mediumblue", new Color(0x0000cd));
145        table.put("mediumorchid", new Color(0xba55d3));
146        table.put("mediumpurple", new Color(0x9370d8));
147        table.put("mediumseagreen", new Color(0x3cb371));
148        table.put("mediumslateblue", new Color(0x7b68ee));
149        table.put("mediumspringgreen", new Color(0x00fa9a));
150        table.put("mediumturquoise", new Color(0x48d1cc));
151        table.put("mediumvioletred", new Color(0xc71585));
152        table.put("midnightblue", new Color(0x191970));
153        table.put("mintcream", new Color(0xf5fffa));
154        table.put("mistyrose", new Color(0xffe4e1));
155        table.put("moccasin", new Color(0xffe4b5));
156        table.put("navajowhite", new Color(0xffdead));
157        table.put("navy", new Color(0x000080));
158        table.put("oldlace", new Color(0xfdf5e6));
159        table.put("olive", new Color(0x808000));
160        table.put("olivedrab", new Color(0x6b8e23));
161        table.put("orange", new Color(0xffa500));
162        table.put("orangered", new Color(0xff4500));
163        table.put("orchid", new Color(0xda70d6));
164        table.put("palegoldenrod", new Color(0xeee8aa));
165        table.put("palegreen", new Color(0x98fb98));
166        table.put("paleturquoise", new Color(0xafeeee));
167        table.put("palevioletred", new Color(0xd87093));
168        table.put("papayawhip", new Color(0xffefd5));
169        table.put("peachpuff", new Color(0xffdab9));
170        table.put("peru", new Color(0xcd853f));
171        table.put("pink", new Color(0xffc0cb));
172        table.put("plum", new Color(0xdda0dd));
173        table.put("powderblue", new Color(0xb0e0e6));
174        table.put("purple", new Color(0x800080));
175        table.put("red", new Color(0xff0000));
176        table.put("rosybrown", new Color(0xbc8f8f));
177        table.put("royalblue", new Color(0x4169e1));
178        table.put("saddlebrown", new Color(0x8b4513));
179        table.put("salmon", new Color(0xfa8072));
180        table.put("sandybrown", new Color(0xf4a460));
181        table.put("seagreen", new Color(0x2e8b57));
182        table.put("seashell", new Color(0xfff5ee));
183        table.put("sienna", new Color(0xa0522d));
184        table.put("silver", new Color(0xc0c0c0));
185        table.put("skyblue", new Color(0x87ceeb));
186        table.put("slateblue", new Color(0x6a5acd));
187        table.put("slategray", new Color(0x708090));
188        table.put("snow", new Color(0xfffafa));
189        table.put("springgreen", new Color(0x00ff7f));
190        table.put("steelblue", new Color(0x4682b4));
191        table.put("tan", new Color(0xd2b48c));
192        table.put("teal", new Color(0x008080));
193        table.put("thistle", new Color(0xd8bfd8));
194        table.put("tomato", new Color(0xff6347));
195        table.put("turquoise", new Color(0x40e0d0));
196        table.put("violet", new Color(0xee82ee));
197        table.put("violetred", new Color(0xd02090));
198        table.put("wheat", new Color(0xf5deb3));
199        table.put("white", new Color(0xffffff));
200        table.put("whitesmoke", new Color(0xf5f5f5));
201        table.put("yellow", new Color(0xffff00));
202        table.put("yellowgreen", new Color(0x9acd32));
203        
204        colorTable = Collections.unmodifiableMap(table);
205    }
206
207    static ColorTable singleton = new ColorTable();
208
209    /** Creates a new instance of ColorTable */
210    protected ColorTable() {
211//        buildColorList();
212    }
213
214    static public ColorTable instance() { return singleton; }
215
216    public Color lookupColor(String name) {
217        Object obj = colorTable.get(name.toLowerCase());
218        if (obj == null) return null;
219
220        return (Color)obj;
221    }
222
223    public static Color parseColor(String val)
224    {
225        Color retVal = null;
226
227        if (val.charAt(0) == '#')
228        {
229            String hexStrn = val.substring(1);
230            
231            if (hexStrn.length() == 3)
232            {
233                hexStrn = "" + hexStrn.charAt(0) + hexStrn.charAt(0) + hexStrn.charAt(1) + hexStrn.charAt(1) + hexStrn.charAt(2) + hexStrn.charAt(2);
234            }
235            int hexVal = parseHex(hexStrn);
236
237            retVal = new Color(hexVal);
238        }
239        else
240        {
241            final String number = "\\s*(((\\d+)(\\.\\d*)?)|(\\.\\d+))(%)?\\s*";
242            final Matcher rgbMatch = Pattern.compile("rgb\\(" + number + "," + number + "," + number + "\\)", Pattern.CASE_INSENSITIVE).matcher("");
243
244            rgbMatch.reset(val);
245            if (rgbMatch.matches())
246            {
247                float rr = Float.parseFloat(rgbMatch.group(1));
248                float gg = Float.parseFloat(rgbMatch.group(7));
249                float bb = Float.parseFloat(rgbMatch.group(13));
250                rr /= "%".equals(rgbMatch.group(6)) ? 100 : 255;
251                gg /= "%".equals(rgbMatch.group(12)) ? 100 : 255;
252                bb /= "%".equals(rgbMatch.group(18)) ? 100 : 255;
253                retVal = new Color(rr, gg, bb);
254            }
255            else
256            {
257                Color lookupCol = ColorTable.instance().lookupColor(val);
258                if (lookupCol != null) retVal = lookupCol;
259            }
260        }
261
262        return retVal;
263    }
264
265    public static int parseHex(String val)
266    {
267        int retVal = 0;
268        
269        for (int i = 0; i < val.length(); i++)
270        {
271            retVal <<= 4;
272            
273            char ch = val.charAt(i);
274            if (ch >= '0' && ch <= '9')
275            {
276                retVal |= ch - '0';
277            }
278            else if (ch >= 'a' && ch <= 'z')
279            {
280                retVal |= ch - 'a' + 10;
281            }
282            else if (ch >= 'A' && ch <= 'Z')
283            {
284                retVal |= ch - 'A' + 10;
285            }
286            else throw new RuntimeException();
287        }
288        
289        return retVal;
290    }
291
292}