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

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2019-08-07 15:40:42 +08:00
"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;