Color Factory : Color « 2D Graphics GUI « Java

Color Factory

    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
    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:
 * 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);
      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;


Related examples in the same category

1.Color class is used to work with colors in Java 2D
2.Color Utilities: common color operations
3.Color Difference
4.Rainbow ColorRainbow Color
5.XOR colorXOR color
6.Color Gradient
7.Common color utilities
8.Drawing with Color
9.Color fading animation
10.140 colors - defined for X Window System listed in O'Reilly html pocket reference 87pp
11.Color Util
12.An efficient color quantization algorithm
13.Utility for checking colors given either hexa or natural language string descriptions.
14.Derives a color by adding the specified offsets to the base color's hue, saturation, and brightness values
15.Map colors into names and vice versa.
16.Converts a given string into a color.
17.If the color is equal to one of the defined constant colors, that name is returned instead.
18.Converts the String representation of a color to an actual Color object.
19.Returns blue-yellow-red color scale
20.Returns green-yellow-red-black color scale
21.Returns black-red-yellow-green color scale
22.Returns color based on 0-9 scale ranging from green to yellow
23.Returns color based on 0-9 scale ranging from yellow to red
24.Returns color based on 0-9 scale ranging from black to green
25.Returns n-dimensional array of colors for given nx3 integer array of RGB values
26.Web color enum
27.Utility class for managing resources such as colors, fonts, images, etc.
28.Make a color transparent
29.Return a Color object given a string representation of it
30.Return a string representation of a color
31.Serializes a color to its HTML markup (e.g. "#ff0000" for red)
32.Parses a java.awt.Color from an HTML color string in the form '#RRGGBB' where RR, GG, and BB are the red, green, and blue bytes in hexadecimal form
33.Performs a somewhat subjective analysis of a color to determine how dark it looks to a user
34.Lightens a color by a given amount
35.Darkens a color by a given amount
36.Blend two colors
37.Utility for working with natively-ordered integer-packed RGBA-format colours.
38.HSV to RGB
39.A widget to manipulate an RGBA colour.