// Copyright 2020 The TCell Authors // // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use file except in compliance with the License. // You may obtain a copy of the license at // // http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS, // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. // See the License for the specific language governing permissions and // limitations under the License. package tcell import ( ic "image/color" "strconv" ) // Color represents a color. The low numeric values are the same as used // by ECMA-48, and beyond that XTerm. A 24-bit RGB value may be used by // adding in the ColorIsRGB flag. For Color names we use the W3C approved // color names. // // We use a 64-bit integer to allow future expansion if we want to add an // 8-bit alpha, while still leaving us some room for extra options. // // Note that on various terminals colors may be approximated however, or // not supported at all. If no suitable representation for a color is known, // the library will simply not set any color, deferring to whatever default // attributes the terminal uses. type Color uint64 const ( // ColorDefault is used to leave the Color unchanged from whatever // system or terminal default may exist. It's also the zero value. ColorDefault Color = 0 // ColorIsValid is used to indicate the color value is actually // valid (initialized). This is useful to permit the zero value // to be treated as the default. ColorValid Color = 1 << 32 // ColorIsRGB is used to indicate that the numeric value is not // a known color constant, but rather an RGB value. The lower // order 3 bytes are RGB. ColorIsRGB Color = 1 << 33 // ColorSpecial is a flag used to indicate that the values have // special meaning, and live outside of the color space(s). ColorSpecial Color = 1 << 34 ) // Note that the order of these options is important -- it follows the // definitions used by ECMA and XTerm. Hence any further named colors // must begin at a value not less than 256. const ( ColorBlack = ColorValid + iota ColorMaroon ColorGreen ColorOlive ColorNavy ColorPurple ColorTeal ColorSilver ColorGray ColorRed ColorLime ColorYellow ColorBlue ColorFuchsia ColorAqua ColorWhite Color16 Color17 Color18 Color19 Color20 Color21 Color22 Color23 Color24 Color25 Color26 Color27 Color28 Color29 Color30 Color31 Color32 Color33 Color34 Color35 Color36 Color37 Color38 Color39 Color40 Color41 Color42 Color43 Color44 Color45 Color46 Color47 Color48 Color49 Color50 Color51 Color52 Color53 Color54 Color55 Color56 Color57 Color58 Color59 Color60 Color61 Color62 Color63 Color64 Color65 Color66 Color67 Color68 Color69 Color70 Color71 Color72 Color73 Color74 Color75 Color76 Color77 Color78 Color79 Color80 Color81 Color82 Color83 Color84 Color85 Color86 Color87 Color88 Color89 Color90 Color91 Color92 Color93 Color94 Color95 Color96 Color97 Color98 Color99 Color100 Color101 Color102 Color103 Color104 Color105 Color106 Color107 Color108 Color109 Color110 Color111 Color112 Color113 Color114 Color115 Color116 Color117 Color118 Color119 Color120 Color121 Color122 Color123 Color124 Color125 Color126 Color127 Color128 Color129 Color130 Color131 Color132 Color133 Color134 Color135 Color136 Color137 Color138 Color139 Color140 Color141 Color142 Color143 Color144 Color145 Color146 Color147 Color148 Color149 Color150 Color151 Color152 Color153 Color154 Color155 Color156 Color157 Color158 Color159 Color160 Color161 Color162 Color163 Color164 Color165 Color166 Color167 Color168 Color169 Color170 Color171 Color172 Color173 Color174 Color175 Color176 Color177 Color178 Color179 Color180 Color181 Color182 Color183 Color184 Color185 Color186 Color187 Color188 Color189 Color190 Color191 Color192 Color193 Color194 Color195 Color196 Color197 Color198 Color199 Color200 Color201 Color202 Color203 Color204 Color205 Color206 Color207 Color208 Color209 Color210 Color211 Color212 Color213 Color214 Color215 Color216 Color217 Color218 Color219 Color220 Color221 Color222 Color223 Color224 Color225 Color226 Color227 Color228 Color229 Color230 Color231 Color232 Color233 Color234 Color235 Color236 Color237 Color238 Color239 Color240 Color241 Color242 Color243 Color244 Color245 Color246 Color247 Color248 Color249 Color250 Color251 Color252 Color253 Color254 Color255 ColorAliceBlue ColorAntiqueWhite ColorAquaMarine ColorAzure ColorBeige ColorBisque ColorBlanchedAlmond ColorBlueViolet ColorBrown ColorBurlyWood ColorCadetBlue ColorChartreuse ColorChocolate ColorCoral ColorCornflowerBlue ColorCornsilk ColorCrimson ColorDarkBlue ColorDarkCyan ColorDarkGoldenrod ColorDarkGray ColorDarkGreen ColorDarkKhaki ColorDarkMagenta ColorDarkOliveGreen ColorDarkOrange ColorDarkOrchid ColorDarkRed ColorDarkSalmon ColorDarkSeaGreen ColorDarkSlateBlue ColorDarkSlateGray ColorDarkTurquoise ColorDarkViolet ColorDeepPink ColorDeepSkyBlue ColorDimGray ColorDodgerBlue ColorFireBrick ColorFloralWhite ColorForestGreen ColorGainsboro ColorGhostWhite ColorGold ColorGoldenrod ColorGreenYellow ColorHoneydew ColorHotPink ColorIndianRed ColorIndigo ColorIvory ColorKhaki ColorLavender ColorLavenderBlush ColorLawnGreen ColorLemonChiffon ColorLightBlue ColorLightCoral ColorLightCyan ColorLightGoldenrodYellow ColorLightGray ColorLightGreen ColorLightPink ColorLightSalmon ColorLightSeaGreen ColorLightSkyBlue ColorLightSlateGray ColorLightSteelBlue ColorLightYellow ColorLimeGreen ColorLinen ColorMediumAquamarine ColorMediumBlue ColorMediumOrchid ColorMediumPurple ColorMediumSeaGreen ColorMediumSlateBlue ColorMediumSpringGreen ColorMediumTurquoise ColorMediumVioletRed ColorMidnightBlue ColorMintCream ColorMistyRose ColorMoccasin ColorNavajoWhite ColorOldLace ColorOliveDrab ColorOrange ColorOrangeRed ColorOrchid ColorPaleGoldenrod ColorPaleGreen ColorPaleTurquoise ColorPaleVioletRed ColorPapayaWhip ColorPeachPuff ColorPeru ColorPink ColorPlum ColorPowderBlue ColorRebeccaPurple ColorRosyBrown ColorRoyalBlue ColorSaddleBrown ColorSalmon ColorSandyBrown ColorSeaGreen ColorSeashell ColorSienna ColorSkyblue ColorSlateBlue ColorSlateGray ColorSnow ColorSpringGreen ColorSteelBlue ColorTan ColorThistle ColorTomato ColorTurquoise ColorViolet ColorWheat ColorWhiteSmoke ColorYellowGreen ) // These are aliases for the color gray, because some of us spell // it as grey. const ( ColorGrey = ColorGray ColorDimGrey = ColorDimGray ColorDarkGrey = ColorDarkGray ColorDarkSlateGrey = ColorDarkSlateGray ColorLightGrey = ColorLightGray ColorLightSlateGrey = ColorLightSlateGray ColorSlateGrey = ColorSlateGray ) // ColorValues maps color constants to their RGB values. var ColorValues = map[Color]int32{ ColorBlack: 0x000000, ColorMaroon: 0x800000, ColorGreen: 0x008000, ColorOlive: 0x808000, ColorNavy: 0x000080, ColorPurple: 0x800080, ColorTeal: 0x008080, ColorSilver: 0xC0C0C0, ColorGray: 0x808080, ColorRed: 0xFF0000, ColorLime: 0x00FF00, ColorYellow: 0xFFFF00, ColorBlue: 0x0000FF, ColorFuchsia: 0xFF00FF, ColorAqua: 0x00FFFF, ColorWhite: 0xFFFFFF, Color16: 0x000000, // black Color17: 0x00005F, Color18: 0x000087, Color19: 0x0000AF, Color20: 0x0000D7, Color21: 0x0000FF, // blue Color22: 0x005F00, Color23: 0x005F5F, Color24: 0x005F87, Color25: 0x005FAF, Color26: 0x005FD7, Color27: 0x005FFF, Color28: 0x008700, Color29: 0x00875F, Color30: 0x008787, Color31: 0x0087Af, Color32: 0x0087D7, Color33: 0x0087FF, Color34: 0x00AF00, Color35: 0x00AF5F, Color36: 0x00AF87, Color37: 0x00AFAF, Color38: 0x00AFD7, Color39: 0x00AFFF, Color40: 0x00D700, Color41: 0x00D75F, Color42: 0x00D787, Color43: 0x00D7AF, Color44: 0x00D7D7, Color45: 0x00D7FF, Color46: 0x00FF00, // lime Color47: 0x00FF5F, Color48: 0x00FF87, Color49: 0x00FFAF, Color50: 0x00FFd7, Color51: 0x00FFFF, // aqua Color52: 0x5F0000, Color53: 0x5F005F, Color54: 0x5F0087, Color55: 0x5F00AF, Color56: 0x5F00D7, Color57: 0x5F00FF, Color58: 0x5F5F00, Color59: 0x5F5F5F, Color60: 0x5F5F87, Color61: 0x5F5FAF, Color62: 0x5F5FD7, Color63: 0x5F5FFF, Color64: 0x5F8700, Color65: 0x5F875F, Color66: 0x5F8787, Color67: 0x5F87AF, Color68: 0x5F87D7, Color69: 0x5F87FF, Color70: 0x5FAF00, Color71: 0x5FAF5F, Color72: 0x5FAF87, Color73: 0x5FAFAF, Color74: 0x5FAFD7, Color75: 0x5FAFFF, Color76: 0x5FD700, Color77: 0x5FD75F, Color78: 0x5FD787, Color79: 0x5FD7AF, Color80: 0x5FD7D7, Color81: 0x5FD7FF, Color82: 0x5FFF00, Color83: 0x5FFF5F, Color84: 0x5FFF87, Color85: 0x5FFFAF, Color86: 0x5FFFD7, Color87: 0x5FFFFF, Color88: 0x870000, Color89: 0x87005F, Color90: 0x870087, Color91: 0x8700AF, Color92: 0x8700D7, Color93: 0x8700FF, Color94: 0x875F00, Color95: 0x875F5F, Color96: 0x875F87, Color97: 0x875FAF, Color98: 0x875FD7, Color99: 0x875FFF, Color100: 0x878700, Color101: 0x87875F, Color102: 0x878787, Color103: 0x8787AF, Color104: 0x8787D7, Color105: 0x8787FF, Color106: 0x87AF00, Color107: 0x87AF5F, Color108: 0x87AF87, Color109: 0x87AFAF, Color110: 0x87AFD7, Color111: 0x87AFFF, Color112: 0x87D700, Color113: 0x87D75F, Color114: 0x87D787, Color115: 0x87D7AF, Color116: 0x87D7D7, Color117: 0x87D7FF, Color118: 0x87FF00, Color119: 0x87FF5F, Color120: 0x87FF87, Color121: 0x87FFAF, Color122: 0x87FFD7, Color123: 0x87FFFF, Color124: 0xAF0000, Color125: 0xAF005F, Color126: 0xAF0087, Color127: 0xAF00AF, Color128: 0xAF00D7, Color129: 0xAF00FF, Color130: 0xAF5F00, Color131: 0xAF5F5F, Color132: 0xAF5F87, Color133: 0xAF5FAF, Color134: 0xAF5FD7, Color135: 0xAF5FFF, Color136: 0xAF8700, Color137: 0xAF875F, Color138: 0xAF8787, Color139: 0xAF87AF, Color140: 0xAF87D7, Color141: 0xAF87FF, Color142: 0xAFAF00, Color143: 0xAFAF5F, Color144: 0xAFAF87, Color145: 0xAFAFAF, Color146: 0xAFAFD7, Color147: 0xAFAFFF, Color148: 0xAFD700, Color149: 0xAFD75F, Color150: 0xAFD787, Color151: 0xAFD7AF, Color152: 0xAFD7D7, Color153: 0xAFD7FF, Color154: 0xAFFF00, Color155: 0xAFFF5F, Color156: 0xAFFF87, Color157: 0xAFFFAF, Color158: 0xAFFFD7, Color159: 0xAFFFFF, Color160: 0xD70000, Color161: 0xD7005F, Color162: 0xD70087, Color163: 0xD700AF, Color164: 0xD700D7, Color165: 0xD700FF, Color166: 0xD75F00, Color167: 0xD75F5F, Color168: 0xD75F87, Color169: 0xD75FAF, Color170: 0xD75FD7, Color171: 0xD75FFF, Color172: 0xD78700, Color173: 0xD7875F, Color174: 0xD78787, Color175: 0xD787AF, Color176: 0xD787D7, Color177: 0xD787FF, Color178: 0xD7AF00, Color179: 0xD7AF5F, Color180: 0xD7AF87, Color181: 0xD7AFAF, Color182: 0xD7AFD7, Color183: 0xD7AFFF, Color184: 0xD7D700, Color185: 0xD7D75F, Color186: 0xD7D787, Color187: 0xD7D7AF, Color188: 0xD7D7D7, Color189: 0xD7D7FF, Color190: 0xD7FF00, Color191: 0xD7FF5F, Color192: 0xD7FF87, Color193: 0xD7FFAF, Color194: 0xD7FFD7, Color195: 0xD7FFFF, Color196: 0xFF0000, // red Color197: 0xFF005F, Color198: 0xFF0087, Color199: 0xFF00AF, Color200: 0xFF00D7, Color201: 0xFF00FF, // fuchsia Color202: 0xFF5F00, Color203: 0xFF5F5F, Color204: 0xFF5F87, Color205: 0xFF5FAF, Color206: 0xFF5FD7, Color207: 0xFF5FFF, Color208: 0xFF8700, Color209: 0xFF875F, Color210: 0xFF8787, Color211: 0xFF87AF, Color212: 0xFF87D7, Color213: 0xFF87FF, Color214: 0xFFAF00, Color215: 0xFFAF5F, Color216: 0xFFAF87, Color217: 0xFFAFAF, Color218: 0xFFAFD7, Color219: 0xFFAFFF, Color220: 0xFFD700, Color221: 0xFFD75F, Color222: 0xFFD787, Color223: 0xFFD7AF, Color224: 0xFFD7D7, Color225: 0xFFD7FF, Color226: 0xFFFF00, // yellow Color227: 0xFFFF5F, Color228: 0xFFFF87, Color229: 0xFFFFAF, Color230: 0xFFFFD7, Color231: 0xFFFFFF, // white Color232: 0x080808, Color233: 0x121212, Color234: 0x1C1C1C, Color235: 0x262626, Color236: 0x303030, Color237: 0x3A3A3A, Color238: 0x444444, Color239: 0x4E4E4E, Color240: 0x585858, Color241: 0x626262, Color242: 0x6C6C6C, Color243: 0x767676, Color244: 0x808080, // grey Color245: 0x8A8A8A, Color246: 0x949494, Color247: 0x9E9E9E, Color248: 0xA8A8A8, Color249: 0xB2B2B2, Color250: 0xBCBCBC, Color251: 0xC6C6C6, Color252: 0xD0D0D0, Color253: 0xDADADA, Color254: 0xE4E4E4, Color255: 0xEEEEEE, ColorAliceBlue: 0xF0F8FF, ColorAntiqueWhite: 0xFAEBD7, ColorAquaMarine: 0x7FFFD4, ColorAzure: 0xF0FFFF, ColorBeige: 0xF5F5DC, ColorBisque: 0xFFE4C4, ColorBlanchedAlmond: 0xFFEBCD, ColorBlueViolet: 0x8A2BE2, ColorBrown: 0xA52A2A, ColorBurlyWood: 0xDEB887, ColorCadetBlue: 0x5F9EA0, ColorChartreuse: 0x7FFF00, ColorChocolate: 0xD2691E, ColorCoral: 0xFF7F50, ColorCornflowerBlue: 0x6495ED, ColorCornsilk: 0xFFF8DC, ColorCrimson: 0xDC143C, ColorDarkBlue: 0x00008B, ColorDarkCyan: 0x008B8B, ColorDarkGoldenrod: 0xB8860B, ColorDarkGray: 0xA9A9A9, ColorDarkGreen: 0x006400, ColorDarkKhaki: 0xBDB76B, ColorDarkMagenta: 0x8B008B, ColorDarkOliveGreen: 0x556B2F, ColorDarkOrange: 0xFF8C00, ColorDarkOrchid: 0x9932CC, ColorDarkRed: 0x8B0000, ColorDarkSalmon: 0xE9967A, ColorDarkSeaGreen: 0x8FBC8F, ColorDarkSlateBlue: 0x483D8B, ColorDarkSlateGray: 0x2F4F4F, ColorDarkTurquoise: 0x00CED1, ColorDarkViolet: 0x9400D3, ColorDeepPink: 0xFF1493, ColorDeepSkyBlue: 0x00BFFF, ColorDimGray: 0x696969, ColorDodgerBlue: 0x1E90FF, ColorFireBrick: 0xB22222, ColorFloralWhite: 0xFFFAF0, ColorForestGreen: 0x228B22, ColorGainsboro: 0xDCDCDC, ColorGhostWhite: 0xF8F8FF, ColorGold: 0xFFD700, ColorGoldenrod: 0xDAA520, ColorGreenYellow: 0xADFF2F, ColorHoneydew: 0xF0FFF0, ColorHotPink: 0xFF69B4, ColorIndianRed: 0xCD5C5C, ColorIndigo: 0x4B0082, ColorIvory: 0xFFFFF0, ColorKhaki: 0xF0E68C, ColorLavender: 0xE6E6FA, ColorLavenderBlush: 0xFFF0F5, ColorLawnGreen: 0x7CFC00, ColorLemonChiffon: 0xFFFACD, ColorLightBlue: 0xADD8E6, ColorLightCoral: 0xF08080, ColorLightCyan: 0xE0FFFF, ColorLightGoldenrodYellow: 0xFAFAD2, ColorLightGray: 0xD3D3D3, ColorLightGreen: 0x90EE90, ColorLightPink: 0xFFB6C1, ColorLightSalmon: 0xFFA07A, ColorLightSeaGreen: 0x20B2AA, ColorLightSkyBlue: 0x87CEFA, ColorLightSlateGray: 0x778899, ColorLightSteelBlue: 0xB0C4DE, ColorLightYellow: 0xFFFFE0, ColorLimeGreen: 0x32CD32, ColorLinen: 0xFAF0E6, ColorMediumAquamarine: 0x66CDAA, ColorMediumBlue: 0x0000CD, ColorMediumOrchid: 0xBA55D3, ColorMediumPurple: 0x9370DB, ColorMediumSeaGreen: 0x3CB371, ColorMediumSlateBlue: 0x7B68EE, ColorMediumSpringGreen: 0x00FA9A, ColorMediumTurquoise: 0x48D1CC, ColorMediumVioletRed: 0xC71585, ColorMidnightBlue: 0x191970, ColorMintCream: 0xF5FFFA, ColorMistyRose: 0xFFE4E1, ColorMoccasin: 0xFFE4B5, ColorNavajoWhite: 0xFFDEAD, ColorOldLace: 0xFDF5E6, ColorOliveDrab: 0x6B8E23, ColorOrange: 0xFFA500, ColorOrangeRed: 0xFF4500, ColorOrchid: 0xDA70D6, ColorPaleGoldenrod: 0xEEE8AA, ColorPaleGreen: 0x98FB98, ColorPaleTurquoise: 0xAFEEEE, ColorPaleVioletRed: 0xDB7093, ColorPapayaWhip: 0xFFEFD5, ColorPeachPuff: 0xFFDAB9, ColorPeru: 0xCD853F, ColorPink: 0xFFC0CB, ColorPlum: 0xDDA0DD, ColorPowderBlue: 0xB0E0E6, ColorRebeccaPurple: 0x663399, ColorRosyBrown: 0xBC8F8F, ColorRoyalBlue: 0x4169E1, ColorSaddleBrown: 0x8B4513, ColorSalmon: 0xFA8072, ColorSandyBrown: 0xF4A460, ColorSeaGreen: 0x2E8B57, ColorSeashell: 0xFFF5EE, ColorSienna: 0xA0522D, ColorSkyblue: 0x87CEEB, ColorSlateBlue: 0x6A5ACD, ColorSlateGray: 0x708090, ColorSnow: 0xFFFAFA, ColorSpringGreen: 0x00FF7F, ColorSteelBlue: 0x4682B4, ColorTan: 0xD2B48C, ColorThistle: 0xD8BFD8, ColorTomato: 0xFF6347, ColorTurquoise: 0x40E0D0, ColorViolet: 0xEE82EE, ColorWheat: 0xF5DEB3, ColorWhiteSmoke: 0xF5F5F5, ColorYellowGreen: 0x9ACD32, } // Special colors. const ( // ColorReset is used to indicate that the color should use the // vanilla terminal colors. (Basically go back to the defaults.) ColorReset = ColorSpecial | iota ) // ColorNames holds the written names of colors. Useful to present a list of // recognized named colors. var ColorNames = map[string]Color{ "black": ColorBlack, "maroon": ColorMaroon, "green": ColorGreen, "olive": ColorOlive, "navy": ColorNavy, "purple": ColorPurple, "teal": ColorTeal, "silver": ColorSilver, "gray": ColorGray, "red": ColorRed, "lime": ColorLime, "yellow": ColorYellow, "blue": ColorBlue, "fuchsia": ColorFuchsia, "aqua": ColorAqua, "white": ColorWhite, "aliceblue": ColorAliceBlue, "antiquewhite": ColorAntiqueWhite, "aquamarine": ColorAquaMarine, "azure": ColorAzure, "beige": ColorBeige, "bisque": ColorBisque, "blanchedalmond": ColorBlanchedAlmond, "blueviolet": ColorBlueViolet, "brown": ColorBrown, "burlywood": ColorBurlyWood, "cadetblue": ColorCadetBlue, "chartreuse": ColorChartreuse, "chocolate": ColorChocolate, "coral": ColorCoral, "cornflowerblue": ColorCornflowerBlue, "cornsilk": ColorCornsilk, "crimson": ColorCrimson, "darkblue": ColorDarkBlue, "darkcyan": ColorDarkCyan, "darkgoldenrod": ColorDarkGoldenrod, "darkgray": ColorDarkGray, "darkgreen": ColorDarkGreen, "darkkhaki": ColorDarkKhaki, "darkmagenta": ColorDarkMagenta, "darkolivegreen": ColorDarkOliveGreen, "darkorange": ColorDarkOrange, "darkorchid": ColorDarkOrchid, "darkred": ColorDarkRed, "darksalmon": ColorDarkSalmon, "darkseagreen": ColorDarkSeaGreen, "darkslateblue": ColorDarkSlateBlue, "darkslategray": ColorDarkSlateGray, "darkturquoise": ColorDarkTurquoise, "darkviolet": ColorDarkViolet, "deeppink": ColorDeepPink, "deepskyblue": ColorDeepSkyBlue, "dimgray": ColorDimGray, "dodgerblue": ColorDodgerBlue, "firebrick": ColorFireBrick, "floralwhite": ColorFloralWhite, "forestgreen": ColorForestGreen, "gainsboro": ColorGainsboro, "ghostwhite": ColorGhostWhite, "gold": ColorGold, "goldenrod": ColorGoldenrod, "greenyellow": ColorGreenYellow, "honeydew": ColorHoneydew, "hotpink": ColorHotPink, "indianred": ColorIndianRed, "indigo": ColorIndigo, "ivory": ColorIvory, "khaki": ColorKhaki, "lavender": ColorLavender, "lavenderblush": ColorLavenderBlush, "lawngreen": ColorLawnGreen, "lemonchiffon": ColorLemonChiffon, "lightblue": ColorLightBlue, "lightcoral": ColorLightCoral, "lightcyan": ColorLightCyan, "lightgoldenrodyellow": ColorLightGoldenrodYellow, "lightgray": ColorLightGray, "lightgreen": ColorLightGreen, "lightpink": ColorLightPink, "lightsalmon": ColorLightSalmon, "lightseagreen": ColorLightSeaGreen, "lightskyblue": ColorLightSkyBlue, "lightslategray": ColorLightSlateGray, "lightsteelblue": ColorLightSteelBlue, "lightyellow": ColorLightYellow, "limegreen": ColorLimeGreen, "linen": ColorLinen, "mediumaquamarine": ColorMediumAquamarine, "mediumblue": ColorMediumBlue, "mediumorchid": ColorMediumOrchid, "mediumpurple": ColorMediumPurple, "mediumseagreen": ColorMediumSeaGreen, "mediumslateblue": ColorMediumSlateBlue, "mediumspringgreen": ColorMediumSpringGreen, "mediumturquoise": ColorMediumTurquoise, "mediumvioletred": ColorMediumVioletRed, "midnightblue": ColorMidnightBlue, "mintcream": ColorMintCream, "mistyrose": ColorMistyRose, "moccasin": ColorMoccasin, "navajowhite": ColorNavajoWhite, "oldlace": ColorOldLace, "olivedrab": ColorOliveDrab, "orange": ColorOrange, "orangered": ColorOrangeRed, "orchid": ColorOrchid, "palegoldenrod": ColorPaleGoldenrod, "palegreen": ColorPaleGreen, "paleturquoise": ColorPaleTurquoise, "palevioletred": ColorPaleVioletRed, "papayawhip": ColorPapayaWhip, "peachpuff": ColorPeachPuff, "peru": ColorPeru, "pink": ColorPink, "plum": ColorPlum, "powderblue": ColorPowderBlue, "rebeccapurple": ColorRebeccaPurple, "rosybrown": ColorRosyBrown, "royalblue": ColorRoyalBlue, "saddlebrown": ColorSaddleBrown, "salmon": ColorSalmon, "sandybrown": ColorSandyBrown, "seagreen": ColorSeaGreen, "seashell": ColorSeashell, "sienna": ColorSienna, "skyblue": ColorSkyblue, "slateblue": ColorSlateBlue, "slategray": ColorSlateGray, "snow": ColorSnow, "springgreen": ColorSpringGreen, "steelblue": ColorSteelBlue, "tan": ColorTan, "thistle": ColorThistle, "tomato": ColorTomato, "turquoise": ColorTurquoise, "violet": ColorViolet, "wheat": ColorWheat, "whitesmoke": ColorWhiteSmoke, "yellowgreen": ColorYellowGreen, "grey": ColorGray, "dimgrey": ColorDimGray, "darkgrey": ColorDarkGray, "darkslategrey": ColorDarkSlateGray, "lightgrey": ColorLightGray, "lightslategrey": ColorLightSlateGray, "slategrey": ColorSlateGray, } // Valid indicates the color is a valid value (has been set). func (c Color) Valid() bool { return c&ColorValid != 0 } // IsRGB is true if the color is an RGB specific value. func (c Color) IsRGB() bool { return c&(ColorValid|ColorIsRGB) == (ColorValid | ColorIsRGB) } // Hex returns the color's hexadecimal RGB 24-bit value with each component // consisting of a single byte, ala R << 16 | G << 8 | B. If the color // is unknown or unset, -1 is returned. func (c Color) Hex() int32 { if !c.Valid() { return -1 } if c&ColorIsRGB != 0 { return int32(c) & 0xffffff } if v, ok := ColorValues[c]; ok { return v } return -1 } // RGB returns the red, green, and blue components of the color, with // each component represented as a value 0-255. In the event that the // color cannot be broken up (not set usually), -1 is returned for each value. func (c Color) RGB() (int32, int32, int32) { v := c.Hex() if v < 0 { return -1, -1, -1 } return (v >> 16) & 0xff, (v >> 8) & 0xff, v & 0xff } // TrueColor returns the true color (RGB) version of the provided color. // This is useful for ensuring color accuracy when using named colors. // This will override terminal theme colors. func (c Color) TrueColor() Color { if !c.Valid() { return ColorDefault } if c&ColorIsRGB != 0 { return c } return Color(c.Hex()) | ColorIsRGB | ColorValid } // NewRGBColor returns a new color with the given red, green, and blue values. // Each value must be represented in the range 0-255. func NewRGBColor(r, g, b int32) Color { return NewHexColor(((r & 0xff) << 16) | ((g & 0xff) << 8) | (b & 0xff)) } // NewHexColor returns a color using the given 24-bit RGB value. func NewHexColor(v int32) Color { return ColorIsRGB | Color(v) | ColorValid } // GetColor creates a Color from a color name (W3C name). A hex value may // be supplied as a string in the format "#ffffff". func GetColor(name string) Color { if c, ok := ColorNames[name]; ok { return c } if len(name) == 7 && name[0] == '#' { if v, e := strconv.ParseInt(name[1:], 16, 32); e == nil { return NewHexColor(int32(v)) } } return ColorDefault } // PaletteColor creates a color based on the palette index. func PaletteColor(index int) Color { return Color(index) | ColorValid } // FromImageColor converts an image/color.Color into tcell.Color. // The alpha value is dropped, so it should be tracked separately if it is // needed. func FromImageColor(imageColor ic.Color) Color { r, g, b, _ := imageColor.RGBA() // NOTE image/color.Color RGB values range is [0, 0xFFFF] as uint32 return NewRGBColor(int32(r>>8), int32(g>>8), int32(b>>8)) }