src/javajs/util/CU.java

   1 package javajs.util;
   2
   3 import java.util.Hashtable;
   4 import java.util.Map;
   5
   6 import javajs.api.GenericColor;
   7
   8 /**
   9  * ColorUtility
  10  *
  11  */
  12
  13 public class CU {
  14
  15   public static String toRGBHexString(GenericColor c) {
  16     int rgb = c.getRGB();
  17     if (rgb == 0)
  18       return "000000";
  19     String r  = "00" + Integer.toHexString((rgb >> 16) & 0xFF);
  20     r = r.substring(r.length() - 2);
  21     String g  = "00" + Integer.toHexString((rgb >> 8) & 0xFF);
  22     g = g.substring(g.length() - 2);
  23     String b  = "00" + Integer.toHexString(rgb & 0xFF);
  24     b = b.substring(b.length() - 2);
  25     return r + g + b;
  26   }
  27
  28   public static String toCSSString(GenericColor c) {
  29     int opacity = c.getOpacity255();
  30     if (opacity == 255)
  31       return "#" + toRGBHexString(c);
  32     int rgb = c.getRGB();
  33     return "rgba(" + ((rgb>>16)&0xFF) + "," + ((rgb>>8)&0xff) + "," + (rgb&0xff) + "," + opacity/255f  + ")";
  34   }
  35
  36   private final static String[] colorNames = {
  37     "black",                // 000000
  38     "pewhite",              // ffffff
  39     "pecyan",               // 00ffff
  40     "pepurple",             // d020ff
  41     "pegreen",              // 00ff00
  42     "peblue",               // 6060ff
  43     "peviolet",             // ff80c0
  44     "pebrown",              // a42028
  45     "pepink",               // ffd8d8
  46     "peyellow",             // ffff00
  47     "pedarkgreen",          // 00c000
  48     "peorange",             // ffb000
  49     "pelightblue",          // b0b0ff
  50     "pedarkcyan",           // 00a0a0
  51     "pedarkgray",           // 606060
  52
  53     "aliceblue",            // F0F8FF
  54     "antiquewhite",         // FAEBD7
  55     "aqua",                 // 00FFFF
  56     "aquamarine",           // 7FFFD4
  57     "azure",                // F0FFFF
  58     "beige",                // F5F5DC
  59     "bisque",               // FFE4C4
  60     "blanchedalmond",       // FFEBCD
  61     "blue",                 // 0000FF
  62     "blueviolet",           // 8A2BE2
  63     "brown",                // A52A2A
  64     "burlywood",            // DEB887
  65     "cadetblue",            // 5F9EA0
  66     "chartreuse",           // 7FFF00
  67     "chocolate",            // D2691E
  68     "coral",                // FF7F50
  69     "cornflowerblue",       // 6495ED
  70     "cornsilk",             // FFF8DC
  71     "crimson",              // DC143C
  72     "cyan",                 // 00FFFF
  73     "darkblue",             // 00008B
  74     "darkcyan",             // 008B8B
  75     "darkgoldenrod",        // B8860B
  76     "darkgray",             // A9A9A9
  77     "darkgreen",            // 006400
  78     "darkkhaki",            // BDB76B
  79     "darkmagenta",          // 8B008B
  80     "darkolivegreen",       // 556B2F
  81     "darkorange",           // FF8C00
  82     "darkorchid",           // 9932CC
  83     "darkred",              // 8B0000
  84     "darksalmon",           // E9967A
  85     "darkseagreen",         // 8FBC8F
  86     "darkslateblue",        // 483D8B
  87     "darkslategray",        // 2F4F4F
  88     "darkturquoise",        // 00CED1
  89     "darkviolet",           // 9400D3
  90     "deeppink",             // FF1493
  91     "deepskyblue",          // 00BFFF
  92     "dimgray",              // 696969
  93     "dodgerblue",           // 1E90FF
  94     "firebrick",            // B22222
  95     "floralwhite",          // FFFAF0 16775920
  96     "forestgreen",          // 228B22
  97     "fuchsia",              // FF00FF
  98     "gainsboro",            // DCDCDC
  99     "ghostwhite",           // F8F8FF
 100     "gold",                 // FFD700
 101     "goldenrod",            // DAA520
 102     "gray",                 // 808080
 103     "green",                // 008000
 104     "greenyellow",          // ADFF2F
 105     "honeydew",             // F0FFF0
 106     "hotpink",              // FF69B4
 107     "indianred",            // CD5C5C
 108     "indigo",               // 4B0082
 109     "ivory",                // FFFFF0
 110     "khaki",                // F0E68C
 111     "lavender",             // E6E6FA
 112     "lavenderblush",        // FFF0F5
 113     "lawngreen",            // 7CFC00
 114     "lemonchiffon",         // FFFACD
 115     "lightblue",            // ADD8E6
 116     "lightcoral",           // F08080
 117     "lightcyan",            // E0FFFF
 118     "lightgoldenrodyellow", // FAFAD2
 119     "lightgreen",           // 90EE90
 120     "lightgrey",            // D3D3D3
 121     "lightpink",            // FFB6C1
 122     "lightsalmon",          // FFA07A
 123     "lightseagreen",        // 20B2AA
 124     "lightskyblue",         // 87CEFA
 125     "lightslategray",       // 778899
 126     "lightsteelblue",       // B0C4DE
 127     "lightyellow",          // FFFFE0
 128     "lime",                 // 00FF00
 129     "limegreen",            // 32CD32
 130     "linen",                // FAF0E6
 131     "magenta",              // FF00FF
 132     "maroon",               // 800000
 133     "mediumaquamarine",     // 66CDAA
 134     "mediumblue",           // 0000CD
 135     "mediumorchid",         // BA55D3
 136     "mediumpurple",         // 9370DB
 137     "mediumseagreen",       // 3CB371
 138     "mediumslateblue",      // 7B68EE
 139     "mediumspringgreen",    // 00FA9A
 140     "mediumturquoise",      // 48D1CC
 141     "mediumvioletred",      // C71585
 142     "midnightblue",         // 191970
 143     "mintcream",            // F5FFFA
 144     "mistyrose",            // FFE4E1
 145     "moccasin",             // FFE4B5
 146     "navajowhite",          // FFDEAD
 147     "navy",                 // 000080
 148     "oldlace",              // FDF5E6
 149     "olive",                // 808000
 150     "olivedrab",            // 6B8E23
 151     "orange",               // FFA500
 152     "orangered",            // FF4500
 153     "orchid",               // DA70D6
 154     "palegoldenrod",        // EEE8AA
 155     "palegreen",            // 98FB98
 156     "paleturquoise",        // AFEEEE
 157     "palevioletred",        // DB7093
 158     "papayawhip",           // FFEFD5
 159     "peachpuff",            // FFDAB9
 160     "peru",                 // CD853F
 161     "pink",                 // FFC0CB
 162     "plum",                 // DDA0DD
 163     "powderblue",           // B0E0E6
 164     "purple",               // 800080
 165     "red",                  // FF0000
 166     "rosybrown",            // BC8F8F
 167     "royalblue",            // 4169E1
 168     "saddlebrown",          // 8B4513
 169     "salmon",               // FA8072
 170     "sandybrown",           // F4A460
 171     "seagreen",             // 2E8B57
 172     "seashell",             // FFF5EE
 173     "sienna",               // A0522D
 174     "silver",               // C0C0C0
 175     "skyblue",              // 87CEEB
 176     "slateblue",            // 6A5ACD
 177     "slategray",            // 708090
 178     "snow",                 // FFFAFA 16775930
 179     "springgreen",          // 00FF7F
 180     "steelblue",            // 4682B4
 181     "tan",                  // D2B48C
 182     "teal",                 // 008080
 183     "thistle",              // D8BFD8
 184     "tomato",               // FF6347
 185     "turquoise",            // 40E0D0
 186     "violet",               // EE82EE
 187     "wheat",                // F5DEB3
 188     "white",                // FFFFFF 16777215
 189     "whitesmoke",           // F5F5F5
 190     "yellow",               // FFFF00
 191     "yellowgreen",          // 9ACD32
 192     // plus a few rasmol names/values
 193     "bluetint",             // AFD7FF
 194     "greenblue",            // 2E8B57
 195     "greentint",            // 98FFB3
 196     "grey",                 // 808080
 197     "pinktint",             // FFABBB
 198     "redorange",            // FF4500
 199     "yellowtint",           // F6F675
 200   };
 201
 202   private final static int[] colorArgbs = {
 203   //#FFFFC3 hover
 204     0xFF000000, // black
 205     // plus the PE chain colors
 206     0xFFffffff, // pewhite
 207     0xFF00ffff, // pecyan
 208     0xFFd020ff, // pepurple
 209     0xFF00ff00, // pegreen
 210     0xFF6060ff, // peblue
 211     0xFFff80c0, // peviolet
 212     0xFFa42028, // pebrown
 213     0xFFffd8d8, // pepink
 214     0xFFffff00, // peyellow
 215     0xFF00c000, // pedarkgreen
 216     0xFFffb000, // peorange
 217     0xFFb0b0ff, // pelightblue
 218     0xFF00a0a0, // pedarkcyan
 219     0xFF606060, // pedarkgray
 220     // standard JavaScript
 221     0xFFF0F8FF, // aliceblue
 222     0xFFFAEBD7, // antiquewhite
 223     0xFF00FFFF, // aqua
 224     0xFF7FFFD4, // aquamarine
 225     0xFFF0FFFF, // azure
 226     0xFFF5F5DC, // beige
 227     0xFFFFE4C4, // bisque
 228     0xFFFFEBCD, // blanchedalmond
 229     0xFF0000FF, // blue
 230     0xFF8A2BE2, // blueviolet
 231     0xFFA52A2A, // brown
 232     0xFFDEB887, // burlywood
 233     0xFF5F9EA0, // cadetblue
 234     0xFF7FFF00, // chartreuse
 235     0xFFD2691E, // chocolate
 236     0xFFFF7F50, // coral
 237     0xFF6495ED, // cornflowerblue
 238     0xFFFFF8DC, // cornsilk
 239     0xFFDC143C, // crimson
 240     0xFF00FFFF, // cyan
 241     0xFF00008B, // darkblue
 242     0xFF008B8B, // darkcyan
 243     0xFFB8860B, // darkgoldenrod
 244     0xFFA9A9A9, // darkgray
 245     0xFF006400, // darkgreen
 246
 247     0xFFBDB76B, // darkkhaki
 248     0xFF8B008B, // darkmagenta
 249     0xFF556B2F, // darkolivegreen
 250     0xFFFF8C00, // darkorange
 251     0xFF9932CC, // darkorchid
 252     0xFF8B0000, // darkred
 253     0xFFE9967A, // darksalmon
 254     0xFF8FBC8F, // darkseagreen
 255     0xFF483D8B, // darkslateblue
 256     0xFF2F4F4F, // darkslategray
 257     0xFF00CED1, // darkturquoise
 258     0xFF9400D3, // darkviolet
 259     0xFFFF1493, // deeppink
 260     0xFF00BFFF, // deepskyblue
 261     0xFF696969, // dimgray
 262     0xFF1E90FF, // dodgerblue
 263     0xFFB22222, // firebrick
 264     0xFFFFFAF0, // floralwhite
 265     0xFF228B22, // forestgreen
 266     0xFFFF00FF, // fuchsia
 267     0xFFDCDCDC, // gainsboro
 268     0xFFF8F8FF, // ghostwhite
 269     0xFFFFD700, // gold
 270     0xFFDAA520, // goldenrod
 271     0xFF808080, // gray
 272     0xFF008000, // green
 273     0xFFADFF2F, // greenyellow
 274     0xFFF0FFF0, // honeydew
 275     0xFFFF69B4, // hotpink
 276     0xFFCD5C5C, // indianred
 277     0xFF4B0082, // indigo
 278     0xFFFFFFF0, // ivory
 279     0xFFF0E68C, // khaki
 280     0xFFE6E6FA, // lavender
 281     0xFFFFF0F5, // lavenderblush
 282     0xFF7CFC00, // lawngreen
 283     0xFFFFFACD, // lemonchiffon
 284     0xFFADD8E6, // lightblue
 285     0xFFF08080, // lightcoral
 286     0xFFE0FFFF, // lightcyan
 287     0xFFFAFAD2, // lightgoldenrodyellow
 288     0xFF90EE90, // lightgreen
 289     0xFFD3D3D3, // lightgrey
 290     0xFFFFB6C1, // lightpink
 291     0xFFFFA07A, // lightsalmon
 292     0xFF20B2AA, // lightseagreen
 293     0xFF87CEFA, // lightskyblue
 294     0xFF778899, // lightslategray
 295     0xFFB0C4DE, // lightsteelblue
 296     0xFFFFFFE0, // lightyellow
 297     0xFF00FF00, // lime
 298     0xFF32CD32, // limegreen
 299     0xFFFAF0E6, // linen
 300     0xFFFF00FF, // magenta
 301     0xFF800000, // maroon
 302     0xFF66CDAA, // mediumaquamarine
 303     0xFF0000CD, // mediumblue
 304     0xFFBA55D3, // mediumorchid
 305     0xFF9370DB, // mediumpurple
 306     0xFF3CB371, // mediumseagreen
 307     0xFF7B68EE, // mediumslateblue
 308     0xFF00FA9A, // mediumspringgreen
 309     0xFF48D1CC, // mediumturquoise
 310     0xFFC71585, // mediumvioletred
 311     0xFF191970, // midnightblue
 312     0xFFF5FFFA, // mintcream
 313     0xFFFFE4E1, // mistyrose
 314     0xFFFFE4B5, // moccasin
 315     0xFFFFDEAD, // navajowhite
 316     0xFF000080, // navy
 317     0xFFFDF5E6, // oldlace
 318     0xFF808000, // olive
 319     0xFF6B8E23, // olivedrab
 320     0xFFFFA500, // orange
 321     0xFFFF4500, // orangered
 322     0xFFDA70D6, // orchid
 323     0xFFEEE8AA, // palegoldenrod
 324     0xFF98FB98, // palegreen
 325     0xFFAFEEEE, // paleturquoise
 326     0xFFDB7093, // palevioletred
 327     0xFFFFEFD5, // papayawhip
 328     0xFFFFDAB9, // peachpuff
 329     0xFFCD853F, // peru
 330     0xFFFFC0CB, // pink
 331     0xFFDDA0DD, // plum
 332     0xFFB0E0E6, // powderblue
 333     0xFF800080, // purple
 334     0xFFFF0000, // red
 335     0xFFBC8F8F, // rosybrown
 336     0xFF4169E1, // royalblue
 337     0xFF8B4513, // saddlebrown
 338     0xFFFA8072, // salmon
 339     0xFFF4A460, // sandybrown
 340     0xFF2E8B57, // seagreen
 341     0xFFFFF5EE, // seashell
 342     0xFFA0522D, // sienna
 343     0xFFC0C0C0, // silver
 344     0xFF87CEEB, // skyblue
 345     0xFF6A5ACD, // slateblue
 346     0xFF708090, // slategray
 347     0xFFFFFAFA, // snow
 348     0xFF00FF7F, // springgreen
 349     0xFF4682B4, // steelblue
 350     0xFFD2B48C, // tan
 351     0xFF008080, // teal
 352     0xFFD8BFD8, // thistle
 353     0xFFFF6347, // tomato
 354     0xFF40E0D0, // turquoise
 355     0xFFEE82EE, // violet
 356     0xFFF5DEB3, // wheat
 357     0xFFFFFFFF, // white
 358     0xFFF5F5F5, // whitesmoke
 359     0xFFFFFF00, // yellow
 360     0xFF9ACD32, // yellowgreen
 361     // plus a few rasmol names/values
 362     0xFFAFD7FF, // bluetint
 363     0xFF2E8B57, // greenblue
 364     0xFF98FFB3, // greentint
 365     0xFF808080, // grey
 366     0xFFFFABBB, // pinktint
 367     0xFFFF4500, // redorange
 368     0xFFF6F675, // yellowtint
 369   };
 370
 371   private static final Map<String, Integer> mapJavaScriptColors = new Hashtable<String, Integer>();
 372
 373   static {
 374     for (int i = colorNames.length; --i >= 0; )
 375       mapJavaScriptColors.put(colorNames[i], Integer.valueOf(colorArgbs[i]));
 376   }
 377
 378   /**
 379    * accepts [xRRGGBB] or [0xRRGGBB] or [0xFFRRGGBB] or #RRGGBB or
 380    * [red,green,blue] or a valid JavaScript color
 381    *
 382    * @param strColor
 383    * @return 0 if invalid or integer color
 384    */
 385   public static int getArgbFromString(String strColor) {
 386     int len = 0;
 387     if (strColor == null || (len = strColor.length()) == 0)
 388       return 0;
 389     if (strColor.charAt(0) == '[' && strColor.charAt(len - 1) == ']') {
 390       String check;
 391       if (strColor.indexOf(",") >= 0) {
 392         String[] tokens = PT.split(strColor.substring(1, strColor
 393             .length() - 1), ",");
 394         if (tokens.length != 3)
 395           return 0;
 396         float red = PT.parseFloat(tokens[0]);
 397         float grn = PT.parseFloat(tokens[1]);
 398         float blu = PT.parseFloat(tokens[2]);
 399         return colorTriadToFFRGB(red, grn, blu);
 400       }
 401       switch (len) {
 402       case 9:
 403         check = "x";
 404         break;
 405       case 10:
 406         check = "0x";
 407         break;
 408       default:
 409         return 0;
 410       }
 411       if (strColor.indexOf(check) != 1)
 412         return 0;
 413       strColor = "#" + strColor.substring(len - 7, len - 1);
 414       len = 7;
 415     }
 416     if (len == 7 && strColor.charAt(0) == '#') {
 417       try {
 418         return PT.parseIntRadix(strColor.substring(1, 7), 16) | 0xFF000000;
 419       } catch (Exception e) {
 420         return 0;
 421       }
 422     }
 423     Integer boxedArgb = mapJavaScriptColors.get(strColor.toLowerCase());
 424     return (boxedArgb == null ? 0 : boxedArgb.intValue());
 425   }
 426
 427   public static int colorTriadToFFRGB(float x, float y, float z) {
 428     if (x <= 1 && y <= 1 && z <= 1) {
 429       if (x > 0)
 430         x = x * 256 - 1;
 431       if (y > 0)
 432         y = y * 256 - 1;
 433       if (z > 0)
 434         z = z * 256 - 1;
 435     }
 436     return rgb((int) x, (int) y, (int) z);
 437   }
 438
 439   public static int rgb(int red, int grn, int blu) {
 440     return 0xFF000000 | (red << 16) | (grn << 8) | blu;
 441   }
 442
 443   public final static P3 colorPtFromString(String colorName) {
 444     return colorPtFromInt(getArgbFromString(colorName), null);
 445   }
 446
 447   public final static P3 colorPtFromInt(int color, P3 pt) {
 448     if (pt == null)
 449       pt = new P3();
 450     pt.set((color >> 16) & 0xFF, (color >> 8) & 0xFF, color & 0xFF);
 451     return pt;
 452   }
 453
 454   public static int colorPtToFFRGB(T3 pt) {
 455     return colorTriadToFFRGB(pt.x, pt.y, pt.z);
 456   }
 457
 458   public static void toRGB3f(int c, float[] f) {
 459     f[0] = ((c >> 16) & 0xFF) / 255f; // red
 460     f[1] = ((c >> 8) & 0xFF) / 255f;
 461     f[2] = (c & 0xFF) / 255f;
 462   }
 463
 464   /**
 465    * Return a greyscale rgb value 0-FF using NTSC color lightness algorithm
 466    *<p>
 467    * the alpha component is set to 0xFF. If you want a value in the
 468    * range 0-255 then & the result with 0xFF;
 469    *
 470    * @param rgb the rgb value
 471    * @return a grayscale value in the range 0 - 255 decimal
 472    */
 473   public static int toFFGGGfromRGB(int rgb) {
 474     int grey = (((2989 * ((rgb >> 16) & 0xFF)) +
 475                 (5870 * ((rgb >> 8) & 0xFF)) +
 476                 (1140 * (rgb & 0xFF)) + 5000) / 10000) & 0xFFFFFF;
 477     return rgb(grey, grey, grey);
 478   }
 479
 480
 481   /**
 482    * Convert RGB values to HSL (hue/saturation/lightness)
 483    *
 484    * @param rgb
 485    *        range 255 255 255
 486    * @param doRound
 487    *        set to false when just using this for
 488    *        for RGB -- HSL -- HSL' -- RGB' conversion
 489    *
 490    * @return the HSL as P3 range 360 100 100
 491    * @author hansonr
 492    */
 493
 494   public static P3 rgbToHSL(P3 rgb, boolean doRound) {
 495     // adapted from http://tips4java.wordpress.com/2009/07/05/hsl-color/
 496     // see http://en.wikipedia.org/wiki/HSL_color_space
 497     float r = rgb.x / 255;
 498     float g = rgb.y / 255;
 499     float b = rgb.z / 255;
 500     float min = Math.min(r, Math.min(g, b));
 501     float max = Math.max(r, Math.max(g, b));
 502
 503     //  lightness is just p * 50
 504
 505     float p = (max + min);
 506     float q = (max - min);
 507
 508     float h = (60 * ((q == 0 ? 0 : max == r ? ((g - b) / q + 6)
 509         : max == g ? (b - r) / q + 2 : (r - g) / q + 4))) % 360;
 510
 511     float s = q / (q == 0 ? 1 : p <= 1 ? p : 2 - p);
 512
 513     // we round to tenths for HSL so that we can  return enough
 514     // precision to get back 1-255 in RGB
 515     return (doRound ? P3.new3(Math.round(h*10)/10f, Math.round(s * 1000)/10f,
 516         Math.round(p * 500)/10f) : P3.new3(h, s * 100, p * 50));
 517   }
 518
 519   /**
 520    * Convert HSL (hue/saturation/luninance) values to RGB
 521    *
 522    * @param hsl in the range 360, 100, 100
 523    * @return the RGB as P3 range 0 to 255
 524    * @author hansonr
 525    */
 526   public static P3 hslToRGB(P3 hsl) {
 527     // adapted from http://tips4java.wordpress.com/2009/07/05/hsl-color/
 528     // see http://en.wikipedia.org/wiki/HSL_color_space
 529
 530     // highly condensed
 531
 532     float h = Math.max(0,  Math.min(360, hsl.x)) / 60;
 533     float s = Math.max(0,  Math.min(100, hsl.y)) / 100;
 534     float l = Math.max(0,  Math.min(100, hsl.z)) / 100;
 535
 536     float p = l - (l < 0.5 ? l : 1 - l) * s;
 537     float q = 2 * (l - p);
 538
 539     float r = toRGB(p, q, h + 2);
 540     float g = toRGB(p, q, h);
 541     float b = toRGB(p, q, h - 2);
 542     return P3.new3(Math.round(r * 255), Math.round(g * 255), Math.round(b * 255));
 543   }
 544
 545   private static float toRGB(float p, float q, float h) {
 546     return ((h = (h + (h < 0 ? 6 : h > 6 ? -6 : 0))) < 1 ? p + q * h
 547         : h < 3 ? p + q : h < 4 ? p + q * (4 - h) : p);
 548   }
 549
 550 }