antv-l7/lib/attr/color-util.js

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports["default"] = void 0;

var _util = _interopRequireDefault(require("../util"));

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

/**
 * @fileOverview 颜色计算的辅助方法
 * @author dxq613@gmail.com
 */
var RGB_REG = /rgba?\(([\s.,0-9]+)\)/;
var ColorKeywords = {
  aliceblue: '#F0F8FF',
  antiquewhite: '#FAEBD7',
  aqua: '#00FFFF',
  aquamarine: '#7FFFD4',
  azure: '#F0FFFF',
  beige: '#F5F5DC',
  bisque: '#FFE4C4',
  black: '#000000',
  blanchedalmond: '#FFEBCD',
  blue: '#0000FF',
  blueviolet: '#8A2BE2',
  brown: '#A52A2A',
  burlywood: '#DEB887',
  cadetblue: '#5F9EA0',
  chartreuse: '#7FFF00',
  chocolate: '#D2691E',
  coral: '#FF7F50',
  cornflowerblue: '#6495ED',
  cornsilk: '#FFF8DC',
  crimson: '#DC143C',
  cyan: '#00FFFF',
  darkblue: '#00008B',
  darkcyan: '#008B8B',
  darkgoldenrod: '#B8860B',
  darkgray: '#A9A9A9',
  darkgreen: '#006400',
  darkgrey: '#A9A9A9',
  darkkhaki: '#BDB76B',
  darkmagenta: '#8B008B',
  darkolivegreen: '#556B2F',
  darkorange: '#FF8C00',
  darkorchid: '#9932CC',
  darkred: '#8B0000',
  darksalmon: '#E9967A',
  darkseagreen: '#8FBC8F',
  darkslateblue: '#483D8B',
  darkslategray: '#2F4F4F',
  darkslategrey: '#2F4F4F',
  darkturquoise: '#00CED1',
  darkviolet: '#9400D3',
  deeppink: '#FF1493',
  deepskyblue: '#00BFFF',
  dimgray: '#696969',
  dimgrey: '#696969',
  dodgerblue: '#1E90FF',
  firebrick: '#B22222',
  floralwhite: '#FFFAF0',
  forestgreen: '#228B22',
  fuchsia: '#FF00FF',
  gainsboro: '#DCDCDC',
  ghostwhite: '#F8F8FF',
  gold: '#FFD700',
  goldenrod: '#DAA520',
  gray: '#808080',
  green: '#008000',
  greenyellow: '#ADFF2F',
  grey: '#808080',
  honeydew: '#F0FFF0',
  hotpink: '#FF69B4',
  indianred: '#CD5C5C',
  indigo: '#4B0082',
  ivory: '#FFFFF0',
  khaki: '#F0E68C',
  lavender: '#E6E6FA',
  lavenderblush: '#FFF0F5',
  lawngreen: '#7CFC00',
  lemonchiffon: '#FFFACD',
  lightblue: '#ADD8E6',
  lightcoral: '#F08080',
  lightcyan: '#E0FFFF',
  lightgoldenrodyellow: '#FAFAD2',
  lightgray: '#D3D3D3',
  lightgreen: '#90EE90',
  lightgrey: '#D3D3D3',
  lightpink: '#FFB6C1',
  lightsalmon: '#FFA07A',
  lightseagreen: '#20B2AA',
  lightskyblue: '#87CEFA',
  lightslategray: '#778899',
  lightslategrey: '#778899',
  lightsteelblue: '#B0C4DE',
  lightyellow: '#FFFFE0',
  lime: '#00FF00',
  limegreen: '#32CD32',
  linen: '#FAF0E6',
  magenta: '#FF00FF',
  maroon: '#800000',
  mediumaquamarine: '#66CDAA',
  mediumblue: '#0000CD',
  mediumorchid: '#BA55D3',
  mediumpurple: '#9370DB',
  mediumseagreen: '#3CB371',
  mediumslateblue: '#7B68EE',
  mediumspringgreen: '#00FA9A',
  mediumturquoise: '#48D1CC',
  mediumvioletred: '#C71585',
  midnightblue: '#191970',
  mintcream: '#F5FFFA',
  mistyrose: '#FFE4E1',
  moccasin: '#FFE4B5',
  navajowhite: '#FFDEAD',
  navy: '#000080',
  oldlace: '#FDF5E6',
  olive: '#808000',
  olivedrab: '#6B8E23',
  orange: '#FFA500',
  orangered: '#FF4500',
  orchid: '#DA70D6',
  palegoldenrod: '#EEE8AA',
  palegreen: '#98FB98',
  paleturquoise: '#AFEEEE',
  palevioletred: '#DB7093',
  papayawhip: '#FFEFD5',
  peachpuff: '#FFDAB9',
  peru: '#CD853F',
  pink: '#FFC0CB',
  plum: '#DDA0DD',
  powderblue: '#B0E0E6',
  purple: '#800080',
  rebeccapurple: '#663399',
  red: '#FF0000',
  rosybrown: '#BC8F8F',
  royalblue: '#4169E1',
  saddlebrown: '#8B4513',
  salmon: '#FA8072',
  sandybrown: '#F4A460',
  seagreen: '#2E8B57',
  seashell: '#FFF5EE',
  sienna: '#A0522D',
  silver: '#C0C0C0',
  skyblue: '#87CEEB',
  slateblue: '#6A5ACD',
  slategray: '#708090',
  slategrey: '#708090',
  snow: '#FFFAFA',
  springgreen: '#00FF7F',
  steelblue: '#4682B4',
  tan: '#D2B48C',
  teal: '#008080',
  thistle: '#D8BFD8',
  tomato: '#FF6347',
  turquoise: '#40E0D0',
  violet: '#EE82EE',
  wheat: '#F5DEB3',
  white: '#FFFFFF',
  whitesmoke: '#F5F5F5',
  yellow: '#FFFF00',
  yellowgreen: '#9ACD32'
}; // 获取颜色之间的插值

function getValue(start, end, percent, index) {
  var value = start[index] + (end[index] - start[index]) * percent;
  return value;
}

function calColor(colors, percent) {
  if (_util["default"].isNaN(percent) || !_util["default"].isNumber(percent)) {
    percent = 0;
  }

  var steps = colors.length - 1;
  var step = Math.floor(steps * percent);
  var left = steps * percent - step;
  var start = colors[step];
  var end = step === steps ? start : colors[step + 1];
  return [getValue(start, end, left, 0), getValue(start, end, left, 1), getValue(start, end, left, 2), getValue(start, end, left, 3)];
} // rgb 颜色转换成数组


function rgb2arr(str) {
  var arr = [];

  if (str.length === 4) {
    str = "#".concat(str[1]).concat(str[1]).concat(str[2]).concat(str[2]).concat(str[3]).concat(str[3]);
  }

  arr.push(parseInt(str.substr(1, 2), 16));
  arr.push(parseInt(str.substr(3, 2), 16));
  arr.push(parseInt(str.substr(5, 2), 16));
  return arr;
}

var colorCache = {};
var ColorUtil = {
  /**
   * 将颜色转换到 rgb 的格式
   * @param  {String} color 颜色
   * @return {String} 将颜色转换到 '#ffffff' 的格式
   */
  toRGB: function toRGB(color) {
    // 如果已经是 rgb的格式
    var colorArray = [255, 255, 255, 255];

    if (ColorKeywords[color]) {
      // color name 2  hex
      var hexColor = ColorKeywords[color];
      colorArray = rgb2arr(hexColor);
      colorArray.push(255.0);
    }

    if (color[0] === '#' && (color.length === 7 || color.length === 4)) {
      // hex2array
      colorArray = rgb2arr(color);
      colorArray.push(255.0);
      return colorArray;
    }

    if (RGB_REG.test(color)) {
      var matchs = RGB_REG.exec(color);
      colorArray = matchs[1].split(/\s*,\s*/);

      if (colorArray.length === 4) {
        colorArray[3] *= 255;
      }

      if (colorArray.length === 3) {
        colorArray.push(255.0);
      }
    }

    colorCache[color] = colorArray;
    return colorArray;
  },
  // 转成 WebGl color buffer
  color2Arr: function color2Arr(str) {
    var rgba = this.toRGB(str);
    return rgba.map(function (v) {
      return v / 255;
    });
  },
  colorArray2RGBA: function colorArray2RGBA(arr) {
    return "rgba(".concat(arr[0] * 255, ",").concat(arr[1] * 255, ",").concat(arr[2] * 255, ",").concat(arr[3], ")");
  },
  color2RGBA: function color2RGBA(str) {
    return this.color2Arr(str);
  },
  rgb2arr: rgb2arr,

  /**
   * 获取渐变函数
   * @param  {Array} colors 多个颜色
   * @return {String} 颜色值
   */
  gradient: function gradient(colors) {
    var points = [];

    if (_util["default"].isString(colors)) {
      colors = colors.split('-');
    }

    _util["default"].each(colors, function (color) {
      var colorArray = ColorUtil.toRGB(color).map(function (e) {
        return e / 255;
      }); // colorArray[3] = colorArray[3] * 255;

      points.push(colorArray);
    });

    return function (percent) {
      return calColor(points, percent);
    };
  }
};
var _default = ColorUtil;
exports["default"] = _default;