Color Factory
/*
GNU LESSER GENERAL PUBLIC LICENSE
Copyright (C) 2006 The Lobo Project
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Contact info: lobochief@users.sourceforge.net
*/
/*
* Created on Apr 17, 2005
*/
import java.util.*;
import java.util.logging.*;
import java.awt.*;
/**
* @author J. H. S.
*/
public class ColorFactory {
private static final Logger logger = Logger.getLogger(ColorFactory.class.getName());
public static final Color TRANSPARENT = new Color(0, 0, 0, 0);
private static ColorFactory instance;
private final Map colorMap = new HashMap(256);
private ColorFactory() {
Map colorMap = this.colorMap;
synchronized(this) {
colorMap.put("transparent", TRANSPARENT);
//http://www.w3schools.com/css/css_colornames.asp
colorMap.put("aliceblue", new Color(0xf0f8ff));
colorMap.put("antiquewhite", new Color(0xfaebd7));
colorMap.put("aqua", new Color(0x00ffff));
colorMap.put("aquamarine", new Color(0x7fffd4));
colorMap.put("azure", new Color(0xf0ffff));
colorMap.put("beige", new Color(0xf5f5dc));
colorMap.put("bisque", new Color(0xffe4c4));
colorMap.put("black", new Color(0x000000));
colorMap.put("blanchedalmond", new Color(0xffebcd));
colorMap.put("blue", new Color(0x0000ff));
colorMap.put("blueviolet", new Color(0x8a2be2));
colorMap.put("brown", new Color(0xa52a2a));
colorMap.put("burlywood", new Color(0xdeb887));
colorMap.put("cadetblue", new Color(0x5f9ea0));
colorMap.put("chartreuse", new Color(0x7fff00));
colorMap.put("chocolate", new Color(0xd2691e));
colorMap.put("coral", new Color(0xff7f50));
colorMap.put("cornflowerblue", new Color(0x6495ed));
colorMap.put("cornsilk", new Color(0xfff8dc));
colorMap.put("crimson", new Color(0xdc143c));
colorMap.put("cyan", new Color(0x00ffff));
colorMap.put("darkblue", new Color(0x00008b));
colorMap.put("darkcyan", new Color(0x008b8b));
colorMap.put("darkgoldenrod", new Color(0xb8860b));
colorMap.put("darkgray", new Color(0xa9a9a9));
colorMap.put("darkgrey", new Color(0xa9a9a9));
colorMap.put("darkgreen", new Color(0x006400));
colorMap.put("darkkhaki", new Color(0xbdb76b));
colorMap.put("darkmagenta", new Color(0x8b008b));
colorMap.put("darkolivegreen", new Color(0x556b2f));
colorMap.put("darkorange", new Color(0xff8c00));
colorMap.put("darkorchid", new Color(0x9932cc));
colorMap.put("darkred", new Color(0x8b0000));
colorMap.put("darksalmon", new Color(0xe9967a));
colorMap.put("darkseagreen", new Color(0x8fbc8f));
colorMap.put("darkslateblue", new Color(0x483d8b));
colorMap.put("darkslategray", new Color(0x2f4f4f));
colorMap.put("darkslategrey", new Color(0x2f4f4f));
colorMap.put("darkturquoise", new Color(0x00ced1));
colorMap.put("darkviolet", new Color(0x9400d3));
colorMap.put("deeppink", new Color(0xff1493));
colorMap.put("deepskyblue", new Color(0x00bfff));
colorMap.put("dimgray", new Color(0x696969));
colorMap.put("dimgrey", new Color(0x696969));
colorMap.put("dodgerblue", new Color(0x1e90ff));
colorMap.put("firebrick", new Color(0xb22222));
colorMap.put("floralwhite", new Color(0xfffaf0));
colorMap.put("forestgreen", new Color(0x228b22));
colorMap.put("fuchsia", new Color(0xff00ff));
colorMap.put("gainsboro", new Color(0xdcdcdc));
colorMap.put("ghostwhite", new Color(0xf8f8ff));
colorMap.put("gold", new Color(0xffd700));
colorMap.put("goldenrod", new Color(0xdaa520));
colorMap.put("gray", new Color(0x808080));
colorMap.put("grey", new Color(0x808080));
colorMap.put("green", new Color(0x008000));
colorMap.put("greenyellow", new Color(0xadff2f));
colorMap.put("honeydew", new Color(0xf0fff0));
colorMap.put("hotpink", new Color(0xff69b4));
colorMap.put("indianred", new Color(0xcd5c5c));
colorMap.put("indigo", new Color(0x4b0082));
colorMap.put("ivory", new Color(0xfffff0));
colorMap.put("khaki", new Color(0xf0e68c));
colorMap.put("lavender", new Color(0xe6e6fa));
colorMap.put("lavenderblush", new Color(0xfff0f5));
colorMap.put("lawngreen", new Color(0x7cfc00));
colorMap.put("lemonchiffon", new Color(0xfffacd));
colorMap.put("lightblue", new Color(0xadd8e6));
colorMap.put("lightcoral", new Color(0xf08080));
colorMap.put("lightcyan", new Color(0xe0ffff));
colorMap.put("lightgoldenrodyellow", new Color(0xfafad2));
colorMap.put("lightgray", new Color(0xd3d3d3));
colorMap.put("lightgrey", new Color(0xd3d3d3));
colorMap.put("lightgreen", new Color(0x90ee90));
colorMap.put("lightpink", new Color(0xffb6c1));
colorMap.put("lightsalmon", new Color(0xffa07a));
colorMap.put("lightseagreen", new Color(0x20b2aa));
colorMap.put("lightskyblue", new Color(0x87cefa));
colorMap.put("lightslategray", new Color(0x778899));
colorMap.put("lightslategrey", new Color(0x778899));
colorMap.put("lightsteelblue", new Color(0xb0c4de));
colorMap.put("lightyellow", new Color(0xffffe0));
colorMap.put("lime", new Color(0x00ff00));
colorMap.put("limegreen", new Color(0x32cd32));
colorMap.put("linen", new Color(0xfaf0e6));
colorMap.put("magenta", new Color(0xff00ff));
colorMap.put("maroon", new Color(0x800000));
colorMap.put("mediumaquamarine", new Color(0x66cdaa));
colorMap.put("mediumblue", new Color(0x0000cd));
colorMap.put("mediumorchid", new Color(0xba55d3));
colorMap.put("mediumpurple", new Color(0x9370d8));
colorMap.put("mediumseagreen", new Color(0x3cb371));
colorMap.put("mediumslateblue", new Color(0x7b68ee));
colorMap.put("mediumspringgreen", new Color(0x00fa9a));
colorMap.put("mediumturquoise", new Color(0x48d1cc));
colorMap.put("mediumvioletred", new Color(0xc71585));
colorMap.put("midnightblue", new Color(0x191970));
colorMap.put("mintcream", new Color(0xf5fffa));
colorMap.put("mistyrose", new Color(0xffe4e1));
colorMap.put("moccasin", new Color(0xffe4b5));
colorMap.put("navajowhite", new Color(0xffdead));
colorMap.put("navy", new Color(0x000080));
colorMap.put("oldlace", new Color(0xfdf5e6));
colorMap.put("olive", new Color(0x808000));
colorMap.put("olivedrab", new Color(0x6b8e23));
colorMap.put("orange", new Color(0xffa500));
colorMap.put("orangered", new Color(0xff4500));
colorMap.put("orchid", new Color(0xda70d6));
colorMap.put("palegoldenrod", new Color(0xeee8aa));
colorMap.put("palegreen", new Color(0x98fb98));
colorMap.put("paleturquoise", new Color(0xafeeee));
colorMap.put("palevioletred", new Color(0xd87093));
colorMap.put("papayawhip", new Color(0xffefd5));
colorMap.put("peachpuff", new Color(0xffdab9));
colorMap.put("peru", new Color(0xcd853f));
colorMap.put("pink", new Color(0xffc0cb));
colorMap.put("plum", new Color(0xdda0dd));
colorMap.put("powderblue", new Color(0xb0e0e6));
colorMap.put("purple", new Color(0x800080));
colorMap.put("red", new Color(0xff0000));
colorMap.put("rosybrown", new Color(0xbc8f8f));
colorMap.put("royalblue", new Color(0x4169e1));
colorMap.put("saddlebrown", new Color(0x8b4513));
colorMap.put("salmon", new Color(0xfa8072));
colorMap.put("sandybrown", new Color(0xf4a460));
colorMap.put("seagreen", new Color(0x2e8b57));
colorMap.put("seashell", new Color(0xfff5ee));
colorMap.put("sienna", new Color(0xa0522d));
colorMap.put("silver", new Color(0xc0c0c0));
colorMap.put("skyblue", new Color(0x87ceeb));
colorMap.put("slateblue", new Color(0x6a5acd));
colorMap.put("slategray", new Color(0x708090));
colorMap.put("slategrey", new Color(0x708090));
colorMap.put("snow", new Color(0xfffafa));
colorMap.put("springgreen", new Color(0x00ff7f));
colorMap.put("steelblue", new Color(0x4682b4));
colorMap.put("tan", new Color(0xd2b48c));
colorMap.put("teal", new Color(0x008080));
colorMap.put("thistle", new Color(0xd8bfd8));
colorMap.put("tomato", new Color(0xff6347));
colorMap.put("turquoise", new Color(0x40e0d0));
colorMap.put("violet", new Color(0xee82ee));
colorMap.put("wheat", new Color(0xf5deb3));
colorMap.put("white", new Color(0xffffff));
colorMap.put("whitesmoke", new Color(0xf5f5f5));
colorMap.put("yellow", new Color(0xffff00));
colorMap.put("yellowgreen", new Color(0x9acd32));
}
}
public static final ColorFactory getInstance() {
if(instance == null) {
synchronized(ColorFactory.class) {
if(instance == null) {
instance = new ColorFactory();
}
}
}
return instance;
}
private static final String RGB_START = "rgb(";
public boolean isColor(String colorSpec) {
if(colorSpec.startsWith("#")) {
return true;
}
String normalSpec = colorSpec.toLowerCase();
if(normalSpec.startsWith(RGB_START)) {
return true;
}
synchronized(this) {
return colorMap.containsKey(normalSpec);
}
}
public Color getColor(String colorSpec) {
String normalSpec = colorSpec.toLowerCase();
synchronized(this) {
Color color = (Color) colorMap.get(normalSpec);
if(color == null) {
if(normalSpec.startsWith(RGB_START)) {
// CssParser produces this format.
int endIdx = normalSpec.lastIndexOf(')');
String commaValues = endIdx == -1 ? normalSpec.substring(RGB_START.length()) : normalSpec.substring(RGB_START.length(), endIdx);
StringTokenizer tok = new StringTokenizer(commaValues, ",");
int r = 0, g = 0, b = 0;
if(tok.hasMoreTokens()) {
String rstr = tok.nextToken().trim();
try {
r = Integer.parseInt(rstr);
} catch(NumberFormatException nfe) {
// ignore
}
if(tok.hasMoreTokens()) {
String gstr = tok.nextToken().trim();
try {
g = Integer.parseInt(gstr);
} catch(NumberFormatException nfe) {
// ignore
}
if(tok.hasMoreTokens()) {
String bstr = tok.nextToken().trim();
try {
b = Integer.parseInt(bstr);
} catch(NumberFormatException nfe) {
// ignore
}
}
}
}
color = new Color(r, g, b);
}
else if(normalSpec.startsWith("#")) {
//TODO: OPTIMIZE: It would be more efficient to
//create new Color(hex), but CssParser doesn't
//give us values formatted with "#" either way.
int len = normalSpec.length();
int[] rgba = new int[4];
rgba[3] = 255;
for(int i = 0; i < rgba.length; i++)
{
int idx = 2 * i + 1;
if(idx < len)
{
String hexText = normalSpec.substring(idx, idx + Math.min(2, len - idx));
try {
rgba[i] = Integer.parseInt(hexText, 16);
} catch(NumberFormatException nfe) {
// Ignore
}
}
}
color = new Color(rgba[0], rgba[1], rgba[2], rgba[3]);
}
else {
if(logger.isLoggable(Level.INFO)) {
logger.warning("getColor(): Color spec [" + normalSpec + "] unknown.");
}
return Color.RED;
}
colorMap.put(normalSpec, color);
}
return color;
}
}
}
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